1 ----------------------------------------
2 10 April 2015. Summary of changes for version 20150410:
4 Reverted a change introduced in version 20150408 that caused
5 a regression in the disassembler where incorrect operator
6 symbols could be emitted.
8 ----------------------------------------
9 08 April 2015. Summary of changes for version 20150408:
12 1) ACPICA kernel-resident subsystem:
14 Permanently set the return value for the _REV predefined name. It now
15 returns 2 (was 5). This matches other ACPI implementations. _REV will be
16 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
17 for ACPI 2.0 and later. It should never be used to differentiate or
18 identify operating systems.
20 Added the "Windows 2015" string to the _OSI support. ACPICA will now
21 return TRUE to a query with this string.
23 Fixed several issues with the local version of the printf function.
25 Added the C99 compiler option (-std=c99) to the Unix makefiles.
28 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
29 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
31 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
32 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
35 2) iASL Compiler/Disassembler and Tools:
37 iASL: Implemented an enhancement to the constant folding feature to
38 transform the parse tree to a simple Store operation whenever possible:
39 Add (2, 3, X) ==> is converted to: Store (5, X)
40 X = 2 + 3 ==> is converted to: Store (5, X)
42 Updated support for the SLIC table (Software Licensing Description Table)
43 in both the Data Table compiler and the disassembler. The SLIC table
44 support now conforms to "Microsoft Software Licensing Tables (SLIC and
45 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
46 following the ACPI header is now defined to be "Proprietary Data", and as
47 such, can only be entered or displayed as a hex data block.
49 Implemented full support for the MSDM table as described in the document
50 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
51 following the ACPI header is defined to be "Proprietary Data", and can
52 only be entered or displayed as a hex data block.
54 Implemented the -Pn option for the iASL Table Compiler (was only
55 implemented for the ASL compiler). This option disables the iASL
58 Disassembler: For disassembly of Data Tables, added a comment field
59 around the Ascii equivalent data that is emitted as part of the "Raw
60 Table Data" block. This prevents the iASL Preprocessor from possible
61 confusion if/when the table is compiled.
63 Disassembler: Added an option (-df) to force the disassembler to assume
64 that the table being disassembled contains valid AML. This feature is
65 useful for disassembling AML files that contain ACPI signatures other
66 than DSDT or SSDT (such as OEMx or other signatures).
68 Changes for the EFI version of the tools:
69 1) Fixed a build error/issue
70 2) Fixed a cast warning
72 iASL: Fixed a path issue with the __FILE__ operator by making the
73 directory prefix optional within the internal SplitInputFilename
76 Debugger: Removed some unused global variables.
78 Tests: Updated the makefile for proper generation of the AAPITS suite.
80 ----------------------------------------
81 04 February 2015. Summary of changes for version 20150204:
83 ACPICA kernel-resident subsystem:
85 Updated all ACPICA copyrights and signons to 2014. Added the 2014
86 copyright to all module headers and signons, including the standard Linux
87 header. This affects virtually every file in the ACPICA core subsystem,
88 iASL compiler, all ACPICA utilities, and the test suites.
90 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
91 A raw gpe handling mechanism was created to allow better handling of GPE
92 storms that aren't easily managed by the normal handler. The raw handler
93 allows disabling/renabling of the the GPE so that interrupt storms can be
94 avoided in cases where events cannot be timely serviced. In this
95 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
96 GPE. This API will leave the reference counts undisturbed, thereby
97 preventing unintentional clearing of the GPE when the intent in only to
98 temporarily disable it. Raw handlers allow enabling and disabling of a
99 GPE by removing GPE register locking. As such, raw handlers much provide
100 their own locks while using GPE API's to protect access to GPE data
104 Events: Always modify GPE registers under the GPE lock.
105 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
106 values. Reported as bug by joe.liu@apple.com.
108 Unix makefiles: Separate option to disable optimizations and
109 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
110 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
111 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
112 errors when building ACPICA. This allows disabling the option without
113 also having to disable optimazations.
117 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
118 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
120 ----------------------------------------
121 07 November 2014. Summary of changes for version 20141107:
123 This release is available at https://acpica.org/downloads
125 This release introduces and implements language extensions to ASL that
126 provide support for symbolic ("C-style") operators and expressions. These
127 language extensions are known collectively as ASL+.
130 1) iASL Compiler/Disassembler and Tools:
132 Disassembler: Fixed a problem with disassembly of the UartSerialBus
133 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
136 Disassembler: Fixed the Unicode macro support to add escape sequences.
137 All non-printable ASCII values are emitted as escape sequences, as well
138 as the standard escapes for quote and backslash. Ensures that the
139 disassembled macro can be correctly recompiled.
141 iASL: Added Printf/Fprintf macros for formatted output. These macros are
142 translated to existing AML Concatenate and Store operations. Printf
143 writes to the ASL Debug object. Fprintf allows the specification of an
144 ASL name as the target. Only a single format specifier is required, %o,
145 since the AML interpreter dynamically converts objects to the required
148 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
149 (Concatenate (Concatenate (Concatenate ("", Arg0),
150 ": Unexpected value for "), Arg1), ", "), Arg2),
151 " at line "), Arg3), Debug)
153 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
154 Arg0, Arg1, Arg2, Arg3)
156 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
157 ("", Arg1), ": "), Arg0), " Successful"), STR1)
159 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
161 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
162 ASL parse tree before the AML code is generated. This allows blocks of
163 ASL code to be removed in order to help locate and identify problem
164 devices and/or code. David E. Box.
166 AcpiExec: Added support (-fi) for an optional namespace object
167 initialization file. This file specifies initial values for namespace
168 objects as necessary for debugging and testing different ASL code paths
169 that may be taken as a result of BIOS options.
172 2) Overview of symbolic operator support for ASL (ASL+)
173 -------------------------------------------------------
175 As an extension to the ASL language, iASL implements support for symbolic
176 (C-style) operators for math and logical expressions. This can greatly
177 simplify ASL code as well as improve both readability and
178 maintainability. These language extensions can exist concurrently with
179 all legacy ASL code and expressions.
181 The symbolic extensions are 100% compatible with existing AML
182 interpreters, since no new AML opcodes are created. To implement the
183 extensions, the iASL compiler transforms the symbolic expressions into
184 the legacy ASL/AML equivalents at compile time.
186 Full symbolic expressions are supported, along with the standard C
187 precedence and associativity rules.
189 Full disassembler support for the symbolic expressions is provided, and
190 creates an automatic migration path for existing ASL code to ASL+ code
191 via the disassembly process. By default, the disassembler now emits ASL+
192 code with symbolic expressions. An option (-dl) is provided to force the
193 disassembler to emit legacy ASL code if desired.
195 Below is the complete list of the currently supported symbolic operators
196 with examples. See the iASL User Guide for additional information.
199 ASL+ Syntax Legacy ASL Equivalent
200 ----------- ---------------------
204 Z = X + Y Add (X, Y, Z)
205 Z = X - Y Subtract (X, Y, Z)
206 Z = X * Y Multiply (X, Y, Z)
207 Z = X / Y Divide (X, Y, , Z)
208 Z = X % Y Mod (X, Y, Z)
209 Z = X << Y ShiftLeft (X, Y, Z)
210 Z = X >> Y ShiftRight (X, Y, Z)
211 Z = X & Y And (X, Y, Z)
212 Z = X | Y Or (X, Y, Z)
213 Z = X ^ Y Xor (X, Y, Z)
220 (X == Y) LEqual (X, Y)
221 (X != Y) LNotEqual (X, Y)
223 (X > Y) LGreater (X, Y)
224 (X <= Y) LLessEqual (X, Y)
225 (X >= Y) LGreaterEqual (X, Y)
230 // Assignment and compound assignment operations
234 X -= Y Subtract (X, Y, X)
235 X *= Y Multiply (X, Y, X)
236 X /= Y Divide (X, Y, , X)
238 X <<= Y ShiftLeft (X, Y, X)
239 X >>= Y ShiftRight (X, Y, X)
249 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
250 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
252 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
254 And (MEMB, 0xFFFFFFF0, SRMB)
257 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
259 Or (PDBM, 0x02, PDBM)
263 If (((R510 & 0x03FB) == 0x02E0) ||
264 ((R520 & 0x03FB) == 0x02E0) ||
265 ((R530 & 0x03FB) == 0x02E0) ||
266 ((R540 & 0x03FB) == 0x02E0))
268 SRMB = (MEMB & 0xFFFFFFF0)
271 PDBM &= 0xFFFFFFFFFFFFFFF9
277 Store (0x1234, Local1)
278 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
279 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
280 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
281 Store (Index (PKG1, 0x03), Local6)
282 Store (Add (Local3, Local2), Debug)
283 Add (Local1, 0x0F, Local2)
284 Add (Local1, Multiply (Local2, Local3), Local2)
285 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
289 Local3 = (((Local1 + TEST) + 0x20) * Local2)
290 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
291 Local3 = (Local1 + (TEST + (0x20 * Local2)))
292 Local6 = Index (PKG1, 0x03)
293 Debug = (Local3 + Local2)
294 Local2 = (Local1 + 0x0F)
295 Local2 = (Local1 + (Local2 * Local3))
296 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
299 ----------------------------------------
300 26 September 2014. Summary of changes for version 20140926:
302 1) ACPICA kernel-resident subsystem:
304 Updated the GPIO operation region handler interface (GeneralPurposeIo).
305 In order to support GPIO Connection objects with multiple pins, along
306 with the related Field objects, the following changes to the interface
307 have been made: The Address is now defined to be the offset in bits of
308 the field unit from the previous invocation of a Connection. It can be
309 viewed as a "Pin Number Index" into the connection resource descriptor.
310 The BitWidth is the exact bit width of the field. It is usually one bit,
311 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
312 additional information and examples.
314 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
315 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
316 by the firmware), so that they cannot fire until they are enabled via
317 AcpiUpdateAllGpes. Rafael J. Wysocki.
319 Added a new return flag for the Event/GPE status interfaces --
320 AcpiGetEventStatus and AcpiGetGpeStatus. The new
321 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
322 GPE currently has a handler associated with it, and can thus actually
323 affect the system. Lv Zheng.
325 Example Code and Data Size: These are the sizes for the OS-independent
326 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
327 debug version of the code includes the debug output trace mechanism and
328 has a much larger code and data size.
331 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
332 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
334 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
335 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
337 2) iASL Compiler/Disassembler and Tools:
339 iASL: Fixed a memory allocation/free regression introduced in 20140828
340 that could cause the compiler to crash. This was introduced inadvertently
341 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
344 iASL: Removed two error messages that have been found to create false
345 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
346 1) Illegal forward reference within a method
347 2) Illegal reference across two methods
349 iASL: Implemented a new option (-lm) to create a hardware mapping file
350 that summarizes all GPIO, I2C, SPI, and UART connections. This option
351 works for both the compiler and disassembler. See the iASL compiler user
352 guide for additional information and examples (section 6.4.6).
354 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
355 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
356 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
358 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
359 unless STDIN is actually a terminal. Assists with batch-mode processing.
362 Disassembler/AcpiHelp: Added another large group of recognized _HID
366 ----------------------------------------
367 28 August 2014. Summary of changes for version 20140828:
369 1) ACPICA kernel-resident subsystem:
371 Fixed a problem related to the internal use of the Timer() operator where
372 a 64-bit divide could cause an attempted link to a double-precision math
373 library. This divide is not actually necessary, so the code was
374 restructured to eliminate it. Lv Zheng.
376 ACPI 5.1: Added support for the runtime validation of the _DSD package
377 (similar to the iASL support).
379 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
380 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
382 Example Code and Data Size: These are the sizes for the OS-independent
383 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
384 debug version of the code includes the debug output trace mechanism and
385 has a much larger code and data size.
388 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
389 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
391 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
392 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
394 2) iASL Compiler/Disassembler and Tools:
396 AcpiExec: Fixed a problem on unix systems where the original terminal
397 state was not always properly restored upon exit. Seen when using the -v
398 option. ACPICA BZ 1104.
400 iASL: Fixed a problem with the validation of the ranges/length within the
401 Memory24 resource descriptor. There was a boundary condition when the
402 range was equal to the (length -1) caused by the fact that these values
403 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
405 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
407 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
409 now supported properly.
411 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
412 in the disassembler, data table compiler, and table template generator.
414 iASL: Added a requirement for Device() objects that one of either a _HID
415 or _ADR must exist within the scope of a Device, as per the ACPI
416 specification. Remove a similar requirement that was incorrectly in place
419 iASL: Added error detection for illegal named references within control
420 methods that would cause runtime failures. Now trapped as errors are: 1)
421 References to objects within a non-parent control method. 2) Forward
422 references (within a method) -- for control methods, AML interpreters use
423 a one-pass parse of control methods. ACPICA BZ 1008.
425 iASL: Added error checking for dependencies related to the _PSx power
426 methods. ACPICA BZ 1029.
427 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
429 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
432 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
433 deploying the existing object and string caches and adding new caches for
436 iASL: Split the huge parser source file into multiple subfiles to improve
437 manageability. Generation now requires the M4 macro preprocessor, which
438 is part of the Bison distribution on both unix and windows platforms.
440 AcpiSrc: Fixed and removed all extraneous warnings generated during
441 entire ACPICA source code scan and/or conversion.
444 ----------------------------------------
446 24 July 2014. Summary of changes for version 20140724:
448 The ACPI 5.1 specification has been released and is available at:
449 http://uefi.org/specs/access
452 0) ACPI 5.1 support in ACPICA:
454 ACPI 5.1 is fully supported in ACPICA as of this release.
456 New predefined names. Support includes iASL and runtime ACPICA
458 _CCA (Cache Coherency Attribute).
459 _DSD (Device-Specific Data). David Box.
461 Modifications to existing ACPI tables. Support includes headers, iASL
462 Data Table compiler, disassembler, and the template generator.
463 FADT - New fields and flags. Graeme Gregory.
464 GTDT - One new subtable and new fields. Tomasz Nowicki.
465 MADT - Two new subtables. Tomasz Nowicki.
466 PCCT - One new subtable.
469 New notification type for System Resource Affinity change events.
472 1) ACPICA kernel-resident subsystem:
474 Fixed a regression introduced in 20140627 where a fault can happen during
475 the deletion of Alias AML namespace objects. The problem affected both
476 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
478 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
479 simple mechanism to enable wake GPEs that have no associated handler or
480 control method. Rafael Wysocki.
482 Updated the AcpiEnableGpe interface to disallow the enable if there is no
483 handler or control method associated with the particular GPE. This will
484 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
486 Updated GPE handling and dispatch by disabling the GPE before clearing
487 the status bit for edge-triggered GPEs. Lv Zheng.
489 Added Timer() support to the AML Debug object. The current timer value is
490 now displayed with each invocation of (Store to) the debug object to
491 enable simple generation of execution times for AML code (method
492 execution for example.) ACPICA BZ 1093.
494 Example Code and Data Size: These are the sizes for the OS-independent
495 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
496 debug version of the code includes the debug output trace mechanism and
497 has a much larger code and data size.
500 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
501 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
503 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
504 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
507 2) iASL Compiler/Disassembler and Tools:
509 Fixed an issue with the recently added local printf implementation,
510 concerning width/precision specifiers that could cause incorrect output.
511 Lv Zheng. ACPICA BZ 1094.
513 Disassembler: Added support to detect buffers that contain UUIDs and
514 disassemble them to an invocation of the ToUUID operator. Also emit
515 commented descriptions of known ACPI-related UUIDs.
517 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
518 -u. Adds three new files.
520 iASL: Update table compiler and disassembler for DMAR table changes that
521 were introduced in September 2013. With assistance by David Woodhouse.
523 ----------------------------------------
524 27 June 2014. Summary of changes for version 20140627:
526 1) ACPICA kernel-resident subsystem:
528 Formatted Output: Implemented local versions of standard formatted output
529 utilities such as printf, etc. Over time, it has been discovered that
530 there are in fact many portability issues with printf, and the addition
531 of this feature will fix/prevent these issues once and for all. Some
532 known issues are summarized below:
534 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
535 for the Linux kernel and is %uI64 for some MSVC versions.
536 2) Invoking printf consistently in a manner that is portable across both
537 32-bit and 64-bit platforms is difficult at best in many situations.
538 3) The output format for pointers varies from system to system (leading
539 zeros especially), and leads to inconsistent output from ACPICA across
541 4) Certain platform-specific printf formats may conflict with ACPICA use.
542 5) If there is no local C library available, ACPICA now has local support
545 -- To address these printf issues in a complete manner, ACPICA now
546 directly implements a small subset of printf format specifiers, only
547 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
549 Implemented support for ACPICA generation within the EFI environment.
550 Initially, the AcpiDump utility is supported in the UEFI shell
551 environment. Lv Zheng.
553 Added a new external interface, AcpiLogError, to improve ACPICA
554 portability. This allows the host to redirect error messages from the
555 ACPICA utilities. Lv Zheng.
557 Added and deployed new OSL file I/O interfaces to improve ACPICA
565 There are C library implementations of these functions in the new file
566 service_layers/oslibcfs.c -- however, the functions can be implemented by
567 the local host in any way necessary. Lv Zheng.
569 Implemented a mechanism to disable/enable ACPI table checksum validation
570 at runtime. This can be useful when loading tables very early during OS
571 initialization when it may not be possible to map the entire table in
572 order to compute the checksum. Lv Zheng.
574 Fixed a buffer allocation issue for the Generic Serial Bus support.
575 Originally, a fixed buffer length was used. This change allows for
576 variable-length buffers based upon the protocol indicated by the field
577 access attributes. Reported by Lan Tianyu. Lv Zheng.
579 Fixed a problem where an object detached from a namespace node was not
580 properly terminated/cleared and could cause a circular list problem if
581 reattached. ACPICA BZ 1063. David Box.
583 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
585 Fixed a possible memory leak in an error return path within the function
586 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
588 Example Code and Data Size: These are the sizes for the OS-independent
589 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
590 debug version of the code includes the debug output trace mechanism and
591 has a much larger code and data size.
594 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
595 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
597 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
598 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
601 2) iASL Compiler/Disassembler and Tools:
603 Disassembler: Add dump of ASCII equivalent text within a comment at the
604 end of each line of the output for the Buffer() ASL operator.
606 AcpiDump: Miscellaneous changes:
607 Fixed repetitive table dump in -n mode.
608 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
609 the ACPI 2.0 GUID fails.
611 iASL: Fixed a problem where the compiler could fault if incorrectly given
612 an acpidump output file as input. ACPICA BZ 1088. David Box.
614 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
615 they are invoked without any arguments.
617 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
618 1086. Colin Ian King.
620 Disassembler: Cleaned up a block of code that extracts a parent Op
621 object. Added a comment that explains that the parent is guaranteed to be
622 valid in this case. ACPICA BZ 1069.
624 ----------------------------------------
625 24 April 2014. Summary of changes for version 20140424:
627 1) ACPICA kernel-resident subsystem:
629 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
630 Some of these tables are known to contain a trailing NULL entry. Lv
633 Removed an extraneous error message for the case where there are a large
634 number of system GPEs (> 124). This was the "32-bit FADT register is too
635 long to convert to GAS struct" message, which is irrelevant for GPEs
636 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
637 (limited capacity) GAS bit length. Also, several changes to ensure proper
638 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
641 Implemented and deployed additional configuration support for the public
642 ACPICA external interfaces. Entire classes of interfaces can now be
643 easily modified or configured out, replaced by stubbed inline functions
644 by default. Lv Zheng.
646 Moved all public ACPICA runtime configuration globals to the public
647 ACPICA external interface file for convenience. Also, removed some
648 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
650 Documentation: Added a new section to the ACPICA reference describing the
651 maximum number of GPEs that can be supported by the FADT-defined GPEs in
652 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
655 Example Code and Data Size: These are the sizes for the OS-independent
656 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
657 debug version of the code includes the debug output trace mechanism and
658 has a much larger code and data size.
661 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
662 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
664 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
665 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
668 2) iASL Compiler/Disassembler and Tools:
670 iASL and disassembler: Add full support for the LPIT table (Low Power
671 Idle Table). Includes support in the disassembler, data table compiler,
672 and template generator.
675 1) Add option to force the use of the RSDT (over the XSDT).
676 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
678 iASL: Add check for predefined packages that are too large. For
679 predefined names that contain subpackages, check if each subpackage is
680 too large. (Check for too small already exists.)
682 Debugger: Updated the GPE command (which simulates a GPE by executing the
683 GPE code paths in ACPICA). The GPE device is now optional, and defaults
684 to the GPE 0/1 FADT-defined blocks.
686 Unix application OSL: Update line-editing support. Add additional error
687 checking and take care not to reset terminal attributes on exit if they
688 were never set. This should help guarantee that the terminal is always
689 left in the previous state on program exit.
691 ----------------------------------------
692 25 March 2014. Summary of changes for version 20140325:
694 1) ACPICA kernel-resident subsystem:
696 Updated the auto-serialize feature for control methods. This feature
697 automatically serializes all methods that create named objects in order
698 to prevent runtime errors. The update adds support to ignore the
699 currently executing AML SyncLevel when invoking such a method, in order
700 to prevent disruption of any existing SyncLevel priorities that may exist
701 in the AML code. Although the use of SyncLevels is relatively rare, this
702 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
703 appear on some machines starting with the 20140214 release.
705 Added a new external interface to allow the host to install ACPI tables
706 very early, before the namespace is even created. AcpiInstallTable gives
707 the host additional flexibility for ACPI table management. Tables can be
708 installed directly by the host as if they had originally appeared in the
709 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
710 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
711 with additional internal restructuring and cleanup. See the ACPICA
712 Reference for interface details. Lv Zheng.
714 Added validation of the checksum for all incoming dynamically loaded
715 tables (via external interfaces or via AML Load/LoadTable operators). Lv
718 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
719 and GPE handler removal. Restructured calls to eliminate possible race
720 conditions. Lv Zheng.
722 Added a warning for the use/execution of the ASL/AML Unload (table)
723 operator. This will help detect and identify machines that use this
724 operator if and when it is ever used. This operator has never been seen
725 in the field and the usage model and possible side-effects of the drastic
726 runtime action of a full table removal are unknown.
728 Reverted the use of #pragma push/pop which was introduced in the 20140214
729 release. It appears that push and pop are not implemented by enough
730 compilers to make the use of this feature feasible for ACPICA at this
731 time. However, these operators may be deployed in a future ACPICA
734 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
737 Source code generation:
738 1) Disabled the use of the "strchr" macro for the gcc-specific
739 generation. For some versions of gcc, this macro can periodically expose
740 a compiler bug which in turn causes compile-time error(s).
741 2) Added support for PPC64 compilation. Colin Ian King.
743 Example Code and Data Size: These are the sizes for the OS-independent
744 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
745 debug version of the code includes the debug output trace mechanism and
746 has a much larger code and data size.
749 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
750 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
752 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
753 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
756 2) iASL Compiler/Disassembler and Tools:
758 Disassembler: Added several new features to improve the readability of
759 the resulting ASL code. Extra information is emitted within comment
760 fields in the ASL code:
761 1) Known _HID/_CID values are decoded to descriptive text.
762 2) Standard values for the Notify() operator are decoded to descriptive
764 3) Target operands are expanded to full pathnames (in a comment) when
767 Disassembler: Miscellaneous updates for extern() handling:
768 1) Abort compiler if file specified by -fe option does not exist.
769 2) Silence unnecessary warnings about argument count mismatches.
770 3) Update warning messages concerning unresolved method externals.
771 4) Emit "UnknownObj" keyword for externals whose type cannot be
775 1) Added the -a option to display both the ASL syntax and the AML
776 encoding for an input ASL operator. This effectively displays all known
777 information about an ASL operator with one AcpiHelp invocation.
778 2) Added substring match support (similar to a wildcard) for the -i
779 (_HID/PNP IDs) option.
781 iASL/Disassembler: Since this tool does not yet support execution on big-
782 endian machines, added detection of endianness and an error message if
783 execution is attempted on big-endian. Support for big-endian within iASL
784 is a feature that is on the ACPICA to-be-done list.
787 1) Remove option to extract binary files from an acpidump; this function
788 is made obsolete by the AcpiXtract utility.
789 2) General cleanup of open files and allocated buffers.
791 ----------------------------------------
792 14 February 2014. Summary of changes for version 20140214:
794 1) ACPICA kernel-resident subsystem:
796 Implemented a new mechanism to proactively prevent problems with ill-
797 behaved reentrant control methods that create named ACPI objects. This
798 behavior is illegal as per the ACPI specification, but is nonetheless
799 frequently seen in the field. Previously, this could lead to an
800 AE_ALREADY_EXISTS exception if the method was actually entered by more
801 than one thread. This new mechanism detects such methods at table load
802 time and marks them "serialized" to prevent reentrancy. A new global
803 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
804 feature if desired. This mechanism and global option obsoletes and
805 supersedes the previous AcpiGbl_SerializeAllMethods option.
807 Added the "Windows 2013" string to the _OSI support. ACPICA will now
808 respond TRUE to _OSI queries with this string. It is the stated policy of
809 ACPICA to add new strings to the _OSI support as soon as possible after
810 they are defined. See the full ACPICA _OSI policy which has been added to
811 the utilities/utosi.c file.
813 Hardened/updated the _PRT return value auto-repair code:
814 1) Do not abort the repair on a single subpackage failure, continue to
815 check all subpackages.
816 2) Add check for the minimum subpackage length (4).
817 3) Properly handle extraneous NULL package elements.
819 Added support to avoid the possibility of infinite loops when traversing
820 object linked lists. Never allow an infinite loop, even in the face of
821 corrupted object lists.
823 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
824 pack(pop) directives to ensure that the ACPICA headers are independent of
825 compiler settings or other host headers.
827 Example Code and Data Size: These are the sizes for the OS-independent
828 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
829 debug version of the code includes the debug output trace mechanism and
830 has a much larger code and data size.
833 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
834 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
836 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
837 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
840 2) iASL Compiler/Disassembler and Tools:
842 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
843 first reserved field was incorrectly forced to have a value of zero. This
844 change correctly forces the field to have a value of one. ACPICA BZ 1081.
846 Debugger: Added missing support for the "Extra" and "Data" subobjects
847 when displaying object data.
849 Debugger: Added support to display entire object linked lists when
850 displaying object data.
852 iASL: Removed the obsolete -g option to obtain ACPI tables from the
853 Windows registry. This feature has been superseded by the acpidump
856 ----------------------------------------
857 14 January 2014. Summary of changes for version 20140114:
859 1) ACPICA kernel-resident subsystem:
861 Updated all ACPICA copyrights and signons to 2014. Added the 2014
862 copyright to all module headers and signons, including the standard Linux
863 header. This affects virtually every file in the ACPICA core subsystem,
864 iASL compiler, all ACPICA utilities, and the test suites.
866 Improved parameter validation for AcpiInstallGpeBlock. Added the
868 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
869 2) There is not already a GPE block attached to the device.
870 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
873 Correctly support "references" in the ACPI_OBJECT. This change fixes the
874 support to allow references (namespace nodes) to be passed as arguments
875 to control methods via the evaluate object interface. This is probably
876 most useful for testing purposes, however.
878 Improved support for 32/64 bit physical addresses in printf()-like
879 output. This change improves the support for physical addresses in printf
880 debug statements and other output on both 32-bit and 64-bit hosts. It
881 consistently outputs the appropriate number of bytes for each host. The
882 %p specifier is unsatisfactory since it does not emit uniform output on
883 all hosts/clib implementations (on some, leading zeros are not supported,
884 leading to difficult-to-read output).
886 Example Code and Data Size: These are the sizes for the OS-independent
887 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
888 debug version of the code includes the debug output trace mechanism and
889 has a much larger code and data size.
892 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
893 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
895 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
896 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
899 2) iASL Compiler/Disassembler and Tools:
901 iASL: Fix a possible fault when using the Connection() operator. Fixes a
902 problem if the parent Field definition for the Connection operator refers
903 to an operation region that does not exist. ACPICA BZ 1064.
905 AcpiExec: Load of local test tables is now optional. The utility has the
906 capability to load some various tables to test features of ACPICA.
907 However, there are enough of them that the output of the utility became
908 confusing. With this change, only the required local tables are displayed
909 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
910 line specification. This makes the default output simler and easier to
911 understand. The -el command line option restores the original behavior
912 for testing purposes.
914 AcpiExec: Added support for overlapping operation regions. This change
915 expands the simulation of operation regions by supporting regions that
916 overlap within the given address space. Supports SystemMemory and
917 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
919 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
920 allows AcpiExec to simulate these address spaces, similar to the current
921 support for SystemMemory and SystemIO.
923 Debugger: Added new command to read/write/compare all namespace objects.
924 The command "test objects" will exercise the entire namespace by writing
925 new values to each data object, and ensuring that the write was
926 successful. The original value is then restored and verified.
928 Debugger: Added the "test predefined" command. This change makes this
929 test public and puts it under the new "test" command. The test executes
930 each and every predefined name within the current namespace.
932 ----------------------------------------
933 18 December 2013. Summary of changes for version 20131218:
935 Global note: The ACPI 5.0A specification was released this month. There
936 are no changes needed for ACPICA since this release of ACPI is an
937 errata/clarification release. The specification is available at
941 1) ACPICA kernel-resident subsystem:
943 Added validation of the XSDT root table if it is present. Some older
944 platforms contain an XSDT that is ill-formed or otherwise invalid (such
945 as containing some or all entries that are NULL pointers). This change
946 adds a new function to validate the XSDT before actually using it. If the
947 XSDT is found to be invalid, ACPICA will now automatically fall back to
948 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
949 ACPICA and enhanced by Lv Zheng and Bob Moore.
951 Added a runtime option to ignore the XSDT and force the use of the RSDT.
952 This change adds a runtime option that will force ACPICA to use the RSDT
953 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
954 requires that an XSDT be used instead of the RSDT, the XSDT has been
955 found to be corrupt or ill-formed on some machines. Lv Zheng.
957 Added a runtime option to favor 32-bit FADT register addresses over the
958 64-bit addresses. This change adds an option to favor 32-bit FADT
959 addresses when there is a conflict between the 32-bit and 64-bit versions
960 of the same register. The default behavior is to use the 64-bit version
961 in accordance with the ACPI specification. This can now be overridden via
962 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
964 During the change above, the internal "Convert FADT" and "Verify FADT"
965 functions have been merged to simplify the code, making it easier to
966 understand and maintain. ACPICA BZ 933.
968 Improve exception reporting and handling for GPE block installation.
969 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
970 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
972 Added helper macros to extract bus/segment numbers from the HEST table.
973 This change adds two macros to extract the encoded bus and segment
974 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
975 Betty Dall <betty.dall@hp.com>
977 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
978 by ACPICA. It is not a public macro, so it should have no effect on
979 existing OSV code. Lv Zheng.
981 Example Code and Data Size: These are the sizes for the OS-independent
982 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
983 debug version of the code includes the debug output trace mechanism and
984 has a much larger code and data size.
987 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
988 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
990 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
991 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
994 2) iASL Compiler/Disassembler and Tools:
996 Disassembler: Improved pathname support for emitted External()
997 statements. This change adds full pathname support for external names
998 that have been resolved internally by the inclusion of additional ACPI
999 tables (via the iASL -e option). Without this change, the disassembler
1000 can emit multiple externals for the same object, or it become confused
1001 when the Scope() operator is used on an external object. Overall, greatly
1002 improves the ability to actually recompile the emitted ASL code when
1003 objects a referenced across multiple ACPI tables. Reported by Michael
1004 Tsirkin (mst@redhat.com).
1006 Tests/ASLTS: Updated functional control suite to execute with no errors.
1007 David Box. Fixed several errors related to the testing of the interpreter
1008 slack mode. Lv Zheng.
1010 iASL: Added support to detect names that are declared within a control
1011 method, but are unused (these are temporary names that are only valid
1012 during the time the method is executing). A remark is issued for these
1013 cases. ACPICA BZ 1022.
1015 iASL: Added full support for the DBG2 table. Adds full disassembler,
1016 table compiler, and template generator support for the DBG2 table (Debug
1019 iASL: Added full support for the PCCT table, update the table definition.
1020 Updates the PCCT table definition in the actbl3.h header and adds table
1021 compiler and template generator support.
1023 iASL: Added an option to emit only error messages (no warnings/remarks).
1024 The -ve option will enable only error messages, warnings and remarks are
1025 suppressed. This can simplify debugging when only the errors are
1026 important, such as when an ACPI table is disassembled and there are many
1027 warnings and remarks -- but only the actual errors are of real interest.
1029 Example ACPICA code (source/tools/examples): Updated the example code so
1030 that it builds to an actual working program, not just example code. Added
1031 ACPI tables and execution of an example control method in the DSDT. Added
1032 makefile support for Unix generation.
1034 ----------------------------------------
1035 15 November 2013. Summary of changes for version 20131115:
1037 This release is available at https://acpica.org/downloads
1040 1) ACPICA kernel-resident subsystem:
1042 Resource Manager: Fixed loop termination for the "get AML length"
1043 function. The loop previously had an error termination on a NULL resource
1044 pointer, which can never happen since the loop simply increments a valid
1045 resource pointer. This fix changes the loop to terminate with an error on
1046 an invalid end-of-buffer condition. The problem can be seen as an
1047 infinite loop by callers to AcpiSetCurrentResources with an invalid or
1048 corrupted resource descriptor, or a resource descriptor that is missing
1049 an END_TAG descriptor. Reported by Dan Carpenter
1050 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
1052 Table unload and ACPICA termination: Delete all attached data objects
1053 during namespace node deletion. This fix updates namespace node deletion
1054 to delete the entire list of attached objects (attached via
1055 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
1056 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
1058 ACPICA termination: Added support to delete all objects attached to the
1059 root namespace node. This fix deletes any and all objects that have been
1060 attached to the root node via AcpiAttachData. Previously, none of these
1061 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
1063 Debug output: Do not emit the function nesting level for the in-kernel
1064 build. The nesting level is really only useful during a single-thread
1065 execution. Therefore, only enable this output for the AcpiExec utility.
1066 Also, only emit the thread ID when executing under AcpiExec (Context
1067 switches are still always detected and a message is emitted). ACPICA BZ
1070 Example Code and Data Size: These are the sizes for the OS-independent
1071 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1072 debug version of the code includes the debug output trace mechanism and
1073 has a much larger code and data size.
1076 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1077 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1079 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1080 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1083 2) iASL Compiler/Disassembler and Tools:
1085 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
1086 correct portable POSIX header for terminal control functions.
1088 Disassembler: Fixed control method invocation issues related to the use
1089 of the CondRefOf() operator. The problem is seen in the disassembly where
1090 control method invocations may not be disassembled properly if the
1091 control method name has been used previously as an argument to CondRefOf.
1092 The solution is to not attempt to emit an external declaration for the
1093 CondRefOf target (it is not necessary in the first place). This prevents
1094 disassembler object type confusion. ACPICA BZ 988.
1096 Unix Makefiles: Added an option to disable compiler optimizations and the
1097 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
1098 with optimizations (reportedly, gcc 4.4 for example). This change adds a
1099 command line option for make (NOOPT) that disables all compiler
1100 optimizations and the _FORTIFY_SOURCE compiler flag. The default
1101 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
1102 1034. Lv Zheng, Bob Moore.
1104 Tests/ASLTS: Added options to specify individual test cases and modes.
1105 This allows testers running aslts.sh to optionally specify individual
1106 test modes and test cases. Also added an option to disable the forced
1107 generation of the ACPICA tools from source if desired. Lv Zheng.
1109 ----------------------------------------
1110 27 September 2013. Summary of changes for version 20130927:
1112 This release is available at https://acpica.org/downloads
1115 1) ACPICA kernel-resident subsystem:
1117 Fixed a problem with store operations to reference objects. This change
1118 fixes a problem where a Store operation to an ArgX object that contained
1120 reference to a field object did not complete the automatic dereference
1122 then write to the actual field object. Instead, the object type of the
1123 field object was inadvertently changed to match the type of the source
1124 operand. The new behavior will actually write to the field object (buffer
1125 field or field unit), thus matching the correct ACPI-defined behavior.
1127 Implemented support to allow the host to redefine individual OSL
1128 prototypes. This change enables the host to redefine OSL prototypes found
1129 in the acpiosxf.h file. This allows the host to implement OSL interfaces
1130 with a macro or inlined function. Further, it allows the host to add any
1131 additional required modifiers such as __iomem, __init, __exit, etc., as
1132 necessary on a per-interface basis. Enables maximum flexibility for the
1133 OSL interfaces. Lv Zheng.
1135 Hardcoded the access width for the FADT-defined reset register. The ACPI
1136 specification requires the reset register width to be 8 bits. ACPICA now
1137 hardcodes the width to 8 and ignores the FADT width value. This provides
1138 compatibility with other ACPI implementations that have allowed BIOS code
1139 with bad register width values to go unnoticed. Matthew Garett, Bob
1143 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
1145 in the OSL header (acpiosxf). The change modifies the position of this
1146 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
1147 build issues if the OSL defines the implementation of the interface to be
1148 an inline stub function. Lv Zheng.
1150 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
1151 initialization interfaces. This change adds a new macro for the main init
1152 and terminate external interfaces in order to support hosts that require
1153 additional or different processing for these functions. Changed from
1154 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
1157 Cleaned up the memory allocation macros for configurability. In the
1159 case, the ACPI_ALLOCATE and related macros now resolve directly to their
1160 respective AcpiOs* OSL interfaces. Two options:
1161 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
1162 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
1163 2) For AcpiExec (and for debugging), the macros can optionally be
1165 to the local ACPICA interfaces that track each allocation (local tracking
1166 is used to immediately detect memory leaks).
1169 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
1170 to predefine this macro to either TRUE or FALSE during the system build.
1172 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
1174 Example Code and Data Size: These are the sizes for the OS-independent
1175 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1176 debug version of the code includes the debug output trace mechanism and
1177 has a much larger code and data size.
1180 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1181 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1183 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1184 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1187 2) iASL Compiler/Disassembler and Tools:
1189 iASL: Implemented wildcard support for the -e option. This simplifies use
1190 when there are many SSDTs that must be included to resolve external
1192 declarations. ACPICA BZ 1041. Example:
1193 iasl -e ssdt*.dat -d dsdt.dat
1195 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
1196 adds a portable module that implements full history and limited line
1197 editing for Unix and Linux systems. It does not use readline() due to
1198 portability issues. Instead it uses the POSIX termio interface to put the
1199 terminal in raw input mode so that the various special keys can be
1201 (such as up/down-arrow for history support and left/right-arrow for line
1202 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
1204 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
1205 one or more spaces. This provides compatible with early or different
1206 versions of the AcpiDump utility. ACPICA BZ 1044.
1208 AcpiDump: Do not ignore tables that contain only an ACPI table header.
1209 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
1210 no other data. This change adds support to dump these tables. Any tables
1211 shorter than the length of an ACPI table header remain in error (an error
1212 message is emitted). Reported by Yi Li.
1214 Debugger: Echo actual command along with the "unknown command" message.
1216 ----------------------------------------
1217 23 August 2013. Summary of changes for version 20130823:
1219 1) ACPICA kernel-resident subsystem:
1221 Implemented support for host-installed System Control Interrupt (SCI)
1222 handlers. Certain ACPI functionality requires the host to handle raw
1223 SCIs. For example, the "SCI Doorbell" that is defined for memory power
1224 state support requires the host device driver to handle SCIs to examine
1225 if the doorbell has been activated. Multiple SCI handlers can be
1226 installed to allow for future expansion. New external interfaces are
1227 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
1228 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
1230 Operation region support: Never locally free the handler "context"
1231 pointer. This change removes some dangerous code that attempts to free
1232 the handler context pointer in some (rare) circumstances. The owner of
1233 the handler owns this pointer and the ACPICA code should never touch it.
1234 Although not seen to be an issue in any kernel, it did show up as a
1235 problem (fault) under AcpiExec. Also, set the internal storage field for
1236 the context pointer to zero when the region is deactivated, simply for
1237 sanity. David Box. ACPICA BZ 1039.
1239 AcpiRead: On error, do not modify the return value target location. If an
1240 error happens in the middle of a split 32/32 64-bit I/O operation, do not
1241 modify the target of the return value pointer. Makes the code consistent
1242 with the rest of ACPICA. Bjorn Helgaas.
1244 Example Code and Data Size: These are the sizes for the OS-independent
1245 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1246 debug version of the code includes the debug output trace mechanism and
1247 has a much larger code and data size.
1250 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1251 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1253 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1254 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
1257 2) iASL Compiler/Disassembler and Tools:
1259 AcpiDump: Implemented several new features and fixed some problems:
1260 1) Added support to dump the RSDP, RSDT, and XSDT tables.
1261 2) Added support for multiple table instances (SSDT, UEFI).
1262 3) Added option to dump "customized" (overridden) tables (-c).
1263 4) Fixed a problem where some table filenames were improperly
1265 5) Improved some error messages, removed some unnecessary messages.
1267 iASL: Implemented additional support for disassembly of ACPI tables that
1268 contain invocations of external control methods. The -fe<file> option
1269 allows the import of a file that specifies the external methods along
1270 with the required number of arguments for each -- allowing for the
1271 correct disassembly of the table. This is a workaround for a limitation
1272 of AML code where the disassembler often cannot determine the number of
1273 arguments required for an external control method and generates incorrect
1274 ASL code. See the iASL reference for details. ACPICA BZ 1030.
1276 Debugger: Implemented a new command (paths) that displays the full
1277 pathnames (namepaths) and object types of all objects in the namespace.
1278 This is an alternative to the namespace command.
1280 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
1281 mechanism and any installed handlers.
1283 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
1284 This can occur if there are too many parent prefixes in a namepath (for
1285 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
1287 Application OSLs: Set the return value for the PCI read functions. These
1288 functions simply return AE_OK, but should set the return value to zero
1289 also. This change implements this. ACPICA BZ 1038.
1291 Debugger: Prevent possible command line buffer overflow. Increase the
1292 size of a couple of the debugger line buffers, and ensure that overflow
1293 cannot happen. ACPICA BZ 1037.
1295 iASL: Changed to abort immediately on serious errors during the parsing
1296 phase. Due to the nature of ASL, there is no point in attempting to
1297 compile these types of errors, and they typically end up causing a
1298 cascade of hundreds of errors which obscure the original problem.
1300 ----------------------------------------
1301 25 July 2013. Summary of changes for version 20130725:
1303 1) ACPICA kernel-resident subsystem:
1305 Fixed a problem with the DerefOf operator where references to FieldUnits
1306 and BufferFields incorrectly returned the parent object, not the actual
1307 value of the object. After this change, a dereference of a FieldUnit
1308 reference results in a read operation on the field to get the value, and
1309 likewise, the appropriate BufferField value is extracted from the target
1312 Fixed a problem where the _WAK method could cause a fault under these
1313 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
1314 method returned no value. The problem is rarely seen because most kernels
1315 run ACPICA in slack mode.
1317 For the DerefOf operator, a fatal error now results if an attempt is made
1318 to dereference a reference (created by the Index operator) to a NULL
1319 package element. Provides compatibility with other ACPI implementations,
1320 and this behavior will be added to a future version of the ACPI
1323 The ACPI Power Management Timer (defined in the FADT) is now optional.
1324 This provides compatibility with other ACPI implementations and will
1325 appear in the next version of the ACPI specification. If there is no PM
1326 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
1327 zero in the FADT indicates no PM timer.
1329 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
1330 allows the host to globally enable/disable all vendor strings, all
1331 feature strings, or both. Intended to be primarily used for debugging
1332 purposes only. Lv Zheng.
1334 Expose the collected _OSI data to the host via a global variable. This
1335 data tracks the highest level vendor ID that has been invoked by the BIOS
1336 so that the host (and potentially ACPICA itself) can change behaviors
1337 based upon the age of the BIOS.
1339 Example Code and Data Size: These are the sizes for the OS-independent
1340 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1341 debug version of the code includes the debug output trace mechanism and
1342 has a much larger code and data size.
1345 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1346 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1348 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1349 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1352 2) iASL Compiler/Disassembler and Tools:
1354 iASL: Created the following enhancements for the -so option (create
1356 1)Add offsets for the last nameseg in each namepath for every supported
1358 2)Add support for Processor, Device, Thermal Zone, and Scope objects
1359 3)Add the actual AML opcode for the parent object of every supported
1361 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
1363 Disassembler: Emit all unresolved external symbols in a single block.
1364 These are external references to control methods that could not be
1365 resolved, and thus, the disassembler had to make a guess at the number of
1368 iASL: The argument to the -T option (create table template) is now
1369 optional. If not specified, the default table is a DSDT, typically the
1372 ----------------------------------------
1373 26 June 2013. Summary of changes for version 20130626:
1375 1) ACPICA kernel-resident subsystem:
1377 Fixed an issue with runtime repair of the _CST object. Null or invalid
1378 elements were not always removed properly. Lv Zheng.
1380 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
1381 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
1382 the maximum number of GPEs is 1016. Use of multiple GPE block devices
1383 makes the system-wide number of GPEs essentially unlimited.
1385 Example Code and Data Size: These are the sizes for the OS-independent
1386 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1387 debug version of the code includes the debug output trace mechanism and
1388 has a much larger code and data size.
1391 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1392 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1394 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1395 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1398 2) iASL Compiler/Disassembler and Tools:
1400 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
1401 hosts. Now supports Linux, FreeBSD, and Windows.
1403 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
1404 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
1406 iASL/Preprocessor: Implemented full support for nested
1407 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
1409 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
1410 max. The original purpose of this constraint was to limit the amount of
1411 debug output. However, the string function in question (UtPrintString) is
1412 now used for the disassembler also, where 256 bytes is insufficient.
1413 Reported by RehabMan@GitHub.
1415 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
1416 tables. ACPICA BZ 999. Lv Zheng.
1418 iASL: Fixed a couple of error exit issues that could result in a "Could
1419 not delete <file>" message during ASL compilation.
1421 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
1422 the actual signatures for these tables are "FACP" and "APIC",
1425 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
1426 tables are allowed to have multiple instances.
1428 ----------------------------------------
1429 17 May 2013. Summary of changes for version 20130517:
1431 1) ACPICA kernel-resident subsystem:
1433 Fixed a regression introduced in version 20130328 for _INI methods. This
1434 change fixes a problem introduced in 20130328 where _INI methods are no
1435 longer executed properly because of a memory block that was not
1436 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
1437 <tomasz.nowicki@linaro.org>.
1439 Fixed a possible problem with the new extended sleep registers in the
1441 5.0 FADT. Do not use these registers (even if populated) unless the HW-
1442 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
1445 Implemented return value repair code for _CST predefined objects: Sort
1447 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
1449 Implemented a debug-only option to disable loading of SSDTs from the
1450 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
1451 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
1452 acglobal.h - ACPICA BZ 1005. Lv Zheng.
1454 Fixed some issues in the ACPICA initialization and termination code:
1455 Tomasz Nowicki <tomasz.nowicki@linaro.org>
1456 1) Clear events initialized flag upon event component termination. ACPICA
1458 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
1459 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
1460 4) Clear debug buffer global on termination to prevent possible multiple
1461 delete. ACPICA BZ 1010.
1463 Standardized all switch() blocks across the entire source base. After
1465 years, different formatting for switch() had crept in. This change makes
1466 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
1468 Split some files to enhance ACPICA modularity and configurability:
1469 1) Split buffer dump routines into utilities/utbuffer.c
1470 2) Split internal error message routines into utilities/uterror.c
1471 3) Split table print utilities into tables/tbprint.c
1472 4) Split iASL command-line option processing into asloptions.c
1474 Makefile enhancements:
1475 1) Support for all new files above.
1476 2) Abort make on errors from any subcomponent. Chao Guan.
1477 3) Add build support for Apple Mac OS X. Liang Qi.
1479 Example Code and Data Size: These are the sizes for the OS-independent
1480 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1481 debug version of the code includes the debug output trace mechanism and
1482 has a much larger code and data size.
1485 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1486 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1488 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1489 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1492 2) iASL Compiler/Disassembler and Tools:
1494 New utility: Implemented an easily portable version of the acpidump
1495 utility to extract ACPI tables from the system (or a file) in an ASCII
1497 dump format. The top-level code implements the various command line
1498 options, file I/O, and table dump routines. To port to a new host, only
1499 three functions need to be implemented to get tables -- since this
1500 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
1501 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
1502 1) The Windows version obtains the ACPI tables from the Registry.
1503 2) The Linux version is under development.
1504 3) Other hosts - If an OS-dependent module is submitted, it will be
1505 distributed with ACPICA.
1507 iASL: Fixed a regression for -D preprocessor option (define symbol). A
1508 restructuring/change to the initialization sequence caused this option to
1509 no longer work properly.
1511 iASL: Implemented a mechanism to disable specific warnings and remarks.
1512 Adds a new command line option, "-vw <messageid> as well as "#pragma
1513 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
1515 iASL: Fix for too-strict package object validation. The package object
1516 validation for return values from the predefined names is a bit too
1517 strict, it does not allow names references within the package (which will
1518 be resolved at runtime.) These types of references cannot be validated at
1519 compile time. This change ignores named references within package objects
1520 for names that return or define static packages.
1522 Debugger: Fixed the 80-character command line limitation for the History
1523 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
1525 iASL: Added control method and package support for the -so option
1526 (generates AML offset table for BIOS support.)
1528 iASL: issue a remark if a non-serialized method creates named objects. If
1529 a thread blocks within the method for any reason, and another thread
1530 enters the method, the method will fail because an attempt will be made
1532 create the same (named) object twice. In this case, issue a remark that
1533 the method should be marked serialized. NOTE: may become a warning later.
1536 ----------------------------------------
1537 18 April 2013. Summary of changes for version 20130418:
1539 1) ACPICA kernel-resident subsystem:
1541 Fixed a possible buffer overrun during some rare but specific field unit
1542 read operations. This overrun can only happen if the DSDT version is 1 --
1543 meaning that all AML integers are 32 bits -- and the field length is
1544 between 33 and 55 bits long. During the read, an internal buffer object
1546 created for the field unit because the field is larger than an integer
1548 bits). However, in this case, the buffer will be incorrectly written
1549 beyond the end because the buffer length is less than the internal
1551 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
1552 long, but a full 8 bytes will be written.
1554 Updated the Embedded Controller "orphan" _REG method support. This refers
1555 to _REG methods under the EC device that have no corresponding operation
1556 region. This is allowed by the ACPI specification. This update removes a
1557 dependency on the existence an ECDT table. It will execute an orphan _REG
1558 method as long as the operation region handler for the EC is installed at
1559 the EC device node and not the namespace root. Rui Zhang (original
1560 update), Bob Moore (update/integrate).
1562 Implemented run-time argument typechecking for all predefined ACPI names
1563 (_STA, _BIF, etc.) This change performs object typechecking on all
1564 incoming arguments for all predefined names executed via
1565 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
1566 passing correct object types as well as the correct number of arguments
1567 (therefore identifying any issues immediately). Also, the ASL/namespace
1568 definition of the predefined name is checked against the ACPI
1569 specification for the proper argument count. Adds one new file,
1572 Changed an exception code for the ASL UnLoad() operator. Changed the
1573 exception code for the case where the input DdbHandle is invalid, from
1574 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
1576 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
1577 global makefile. The use of this flag causes compiler errors on earlier
1578 versions of GCC, so it has been removed for compatibility.
1580 Miscellaneous cleanup:
1581 1) Removed some unused/obsolete macros
1582 2) Fixed a possible memory leak in the _OSI support
1583 3) Removed an unused variable in the predefined name support
1584 4) Windows OSL: remove obsolete reference to a memory list field
1586 Example Code and Data Size: These are the sizes for the OS-independent
1587 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1588 debug version of the code includes the debug output trace mechanism and
1589 has a much larger code and data size.
1592 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1593 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1595 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1596 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1599 2) iASL Compiler/Disassembler and Tools:
1601 AcpiExec: Added installation of a handler for the SystemCMOS address
1602 space. This prevents control method abort if a method accesses this
1605 AcpiExec: Added support for multiple EC devices, and now install EC
1606 operation region handler(s) at the actual EC device instead of the
1607 namespace root. This reflects the typical behavior of host operating
1610 AcpiExec: Updated to ensure that all operation region handlers are
1611 installed before the _REG methods are executed. This prevents a _REG
1612 method from aborting if it accesses an address space has no handler.
1613 AcpiExec installs a handler for every possible address space.
1615 Debugger: Enhanced the "handlers" command to display non-root handlers.
1616 This change enhances the handlers command to display handlers associated
1617 with individual devices throughout the namespace, in addition to the
1618 currently supported display of handlers associated with the root
1622 ASL Test Suite: Several test suite errors have been identified and
1623 resolved, reducing the total error count during execution. Chao Guan.
1625 ----------------------------------------
1626 28 March 2013. Summary of changes for version 20130328:
1628 1) ACPICA kernel-resident subsystem:
1630 Fixed several possible race conditions with the internal object reference
1631 counting mechanism. Some of the external ACPICA interfaces update object
1632 reference counts without holding the interpreter or namespace lock. This
1633 change adds a spinlock to protect reference count updates on the internal
1634 ACPICA objects. Reported by and with assistance from Andriy Gapon
1637 FADT support: Removed an extraneous warning for very large GPE register
1638 sets. This change removes a size mismatch warning if the legacy length
1639 field for a GPE register set is larger than the 64-bit GAS structure can
1640 accommodate. GPE register sets can be larger than the 255-bit width
1641 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1643 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1644 return from this interface. Handles a possible timeout case if
1645 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1646 "forever". Jung-uk Kim.
1648 Predefined name support: Add allowed/required argument type information
1650 the master predefined info table. This change adds the infrastructure to
1651 enable typechecking on incoming arguments for all predefined
1652 methods/objects. It does not actually contain the code that will fully
1653 utilize this information, this is still under development. Also condenses
1654 some duplicate code for the predefined names into a new module,
1655 utilities/utpredef.c
1657 Example Code and Data Size: These are the sizes for the OS-independent
1658 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1659 debug version of the code includes the debug output trace mechanism and
1660 has a much larger code and data size.
1663 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1664 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1666 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1667 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1670 2) iASL Compiler/Disassembler and Tools:
1672 iASL: Implemented a new option to simplify the development of ACPI-
1674 BIOS code. Adds support for a new "offset table" output file. The -so
1675 option will create a C table containing the AML table offsets of various
1676 named objects in the namespace so that BIOS code can modify them easily
1678 boot time. This can simplify BIOS runtime code by eliminating expensive
1679 searches for "magic values", enhancing boot times and adding greater
1680 reliability. With assistance from Lee Hamel.
1682 iASL: Allow additional predefined names to return zero-length packages.
1683 Now, all predefined names that are defined by the ACPI specification to
1684 return a "variable-length package of packages" are allowed to return a
1685 zero length top-level package. This allows the BIOS to tell the host that
1686 the requested feature is not supported, and supports existing BIOS/ASL
1689 iASL: Changed the "result not used" warning to an error. This is the case
1690 where an ASL operator is effectively a NOOP because the result of the
1691 operation is not stored anywhere. For example:
1693 There is no target (missing 3rd argument), nor is the function return
1694 value used. This is potentially a very serious problem -- since the code
1695 was probably intended to do something, but for whatever reason, the value
1696 was not stored. Therefore, this issue has been upgraded from a warning to
1699 AcpiHelp: Added allowable/required argument types to the predefined names
1700 info display. This feature utilizes the recent update to the predefined
1701 names table (above).
1703 ----------------------------------------
1704 14 February 2013. Summary of changes for version 20130214:
1706 1) ACPICA Kernel-resident Subsystem:
1708 Fixed a possible regression on some hosts: Reinstated the safe return
1709 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1710 evaluated only once. Although these macros are not needed for the ACPICA
1711 code itself, they are often used by ACPI-related host device drivers
1713 the safe feature may be necessary.
1715 Fixed several issues related to the ACPI 5.0 reduced hardware support
1716 (SOC): Now ensure that if the platform declares itself as hardware-
1718 via the FADT, the following functions become NOOPs (and always return
1719 AE_OK) because ACPI is always enabled by definition on these machines:
1725 Dynamic Object Repair: Implemented additional runtime repairs for
1726 predefined name return values. Both of these repairs can simplify code in
1727 the related device drivers that invoke these methods:
1728 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1729 string to a Unicode buffer.
1730 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1732 lone end tag descriptor in the following cases: A Return(0) was executed,
1733 a null buffer was returned, or no object at all was returned (non-slack
1734 mode only). Adds a new file, nsconvert.c
1735 ACPICA BZ 998. Bob Moore, Lv Zheng.
1737 Resource Manager: Added additional code to prevent possible infinite
1739 while traversing corrupted or ill-formed resource template buffers. Check
1740 for zero-length resource descriptors in all code that loops through
1741 resource templates (the length field is used to index through the
1742 template). This change also hardens the external AcpiWalkResources and
1743 AcpiWalkResourceBuffer interfaces.
1745 Local Cache Manager: Enhanced the main data structure to eliminate an
1746 unnecessary mechanism to access the next object in the list. Actually
1747 provides a small performance enhancement for hosts that use the local
1748 ACPICA cache manager. Jung-uk Kim.
1750 Example Code and Data Size: These are the sizes for the OS-independent
1751 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1752 debug version of the code includes the debug output trace mechanism and
1753 has a much larger code and data size.
1756 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1757 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1759 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1760 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1763 2) iASL Compiler/Disassembler and Tools:
1765 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1766 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1767 that were made to the ACPI 5.0 specification.
1769 iASL/Disassembler: Added full support for the following new ACPI tables:
1770 1) The MTMR table (MID Timer Table)
1771 2) The VRTC table (Virtual Real Time Clock Table).
1772 Includes header file, disassembler, table compiler, and template support
1775 iASL: Implemented compile-time validation of package objects returned by
1776 predefined names. This new feature validates static package objects
1777 returned by the various predefined names defined to return packages. Both
1778 object types and package lengths are validated, for both parent packages
1779 and sub-packages, if any. The code is similar in structure and behavior
1781 the runtime repair mechanism within the AML interpreter and uses the
1782 existing predefined name information table. Adds a new file, aslprepkg.c.
1785 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1786 This feature detects a binary file with a valid ACPI table header and
1787 invokes the disassembler automatically. Eliminates the need to
1788 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1790 iASL/Disassembler: Added several warnings for the case where there are
1791 unresolved control methods during the disassembly. This can potentially
1792 cause errors when the output file is compiled, because the disassembler
1793 assumes zero method arguments in these cases (it cannot determine the
1794 actual number of arguments without resolution/definition of the method).
1796 Debugger: Added support to display all resources with a single command.
1797 Invocation of the resources command with no arguments will now display
1799 resources within the current namespace.
1801 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1804 ----------------------------------------
1805 17 January 2013. Summary of changes for version 20130117:
1807 1) ACPICA Kernel-resident Subsystem:
1809 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1810 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1811 objects to return a package containing one integer, most BIOS code
1813 two integers and the previous code reflects that. However, we also need
1815 support BIOS code that actually implements to the ACPI spec, and this
1816 change reflects this.
1818 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1819 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1820 C compilers that require this support.
1821 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1822 ACPI_DEBUG is already used by many of the various hosts.
1824 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1825 copyright to all module headers and signons, including the standard Linux
1826 header. This affects virtually every file in the ACPICA core subsystem,
1827 iASL compiler, all ACPICA utilities, and the test suites.
1829 Example Code and Data Size: These are the sizes for the OS-independent
1830 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1831 debug version of the code includes the debug output trace mechanism and
1832 has a much larger code and data size.
1835 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1836 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1838 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1839 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1842 2) iASL Compiler/Disassembler and Tools:
1844 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1845 prevent a possible fault on some hosts. Some C libraries modify the arg
1846 pointer parameter to vfprintf making it difficult to call it twice in the
1847 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1848 does not affect the Windows OSL since the Win C library does not modify
1849 the arg pointer. Chao Guan, Bob Moore.
1851 iASL: Fixed a possible infinite loop when the maximum error count is
1852 reached. If an output file other than the .AML file is specified (such as
1853 a listing file), and the maximum number of errors is reached, do not
1854 attempt to flush data to the output file(s) as the compiler is aborting.
1855 This can cause an infinite loop as the max error count code essentially
1856 keeps calling itself.
1858 iASL/Disassembler: Added an option (-in) to ignore NOOP
1860 Implemented for both the compiler and the disassembler. Often, the NOOP
1861 opcode is used as padding for packages that are changed dynamically by
1863 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1864 errors. This option causes the disassembler to ignore all NOOP opcodes
1865 (0xA3), and it also causes the compiler to ignore all ASL source code
1869 Debugger: Enhanced the Sleep command to execute all sleep states. This
1870 change allows Sleep to be invoked with no arguments and causes the
1871 debugger to execute all of the sleep states, 0-5, automatically.
1873 ----------------------------------------
1874 20 December 2012. Summary of changes for version 20121220:
1876 1) ACPICA Kernel-resident Subsystem:
1878 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1879 alternate entry point for AcpiWalkResources and improves the usability of
1880 the resource manager by accepting as input a buffer containing the output
1881 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1882 input buffer is not deleted by this interface so that it can be used by
1883 the host later. See the ACPICA reference for details.
1885 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1886 (DSDT version < 2). The constant will be truncated and this warning
1887 reflects that behavior.
1889 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1890 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1891 both get and set the new wake bit in these descriptors, separately from
1892 the existing share bit. Reported by Aaron Lu.
1894 Interpreter: Fix Store() when an implicit conversion is not possible. For
1895 example, in the cases such as a store of a string to an existing package
1896 object, implement the store as a CopyObject(). This is a small departure
1897 from the ACPI specification which states that the control method should
1899 aborted in this case. However, the ASLTS suite depends on this behavior.
1901 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1902 macros: check if debug output is currently enabled as soon as possible to
1903 minimize performance impact if debug is in fact not enabled.
1905 Source code restructuring: Cleanup to improve modularity. The following
1906 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1907 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1908 Associated makefiles and project files have been updated.
1910 Changed an exception code for LoadTable operator. For the case where one
1911 of the input strings is too long, change the returned exception code from
1912 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1914 Fixed a possible memory leak in dispatcher error path. On error, delete
1915 the mutex object created during method mutex creation. Reported by
1916 tim.gardner@canonical.com.
1918 Example Code and Data Size: These are the sizes for the OS-independent
1919 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1920 debug version of the code includes the debug output trace mechanism and
1921 has a much larger code and data size.
1924 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1925 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1927 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1928 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1931 2) iASL Compiler/Disassembler and Tools:
1933 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1934 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1935 will not allow the interpreter to differentiate between a method and a
1936 method invocation when these are used as an argument to the ObjectType
1937 operator. The ACPI specification change is to disallow a method
1939 (UserTerm) for the ObjectType operator.
1941 Finish support for the TPM2 and CSRT tables in the headers, table
1942 compiler, and disassembler.
1944 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1945 always expires immediately if the semaphore is not available. The
1947 code was using a relative-time timeout, but sem_timedwait requires the
1949 of an absolute time.
1951 iASL: Added a remark if the Timer() operator is used within a 32-bit
1952 table. This operator returns a 64-bit time value that will be truncated
1953 within a 32-bit table.
1955 iASL Source code restructuring: Cleanup to improve modularity. The
1956 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1957 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1961 ----------------------------------------
1962 14 November 2012. Summary of changes for version 20121114:
1964 1) ACPICA Kernel-resident Subsystem:
1966 Implemented a performance enhancement for ACPI/AML Package objects. This
1967 change greatly increases the performance of Package objects within the
1968 interpreter. It changes the processing of reference counts for packages
1970 optimizing for the most common case where the package sub-objects are
1971 either Integers, Strings, or Buffers. Increases the overall performance
1973 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1975 Chao Guan. ACPICA BZ 943.
1977 Implemented and deployed common macros to extract flag bits from resource
1978 descriptors. Improves readability and maintainability of the code. Fixes
1980 problem with the UART serial bus descriptor for the number of data bits
1981 flags (was incorrectly 2 bits, should be 3).
1983 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1984 of the macros and changed the SETx macros to the style of (destination,
1985 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1987 Example Code and Data Size: These are the sizes for the OS-independent
1988 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1989 debug version of the code includes the debug output trace mechanism and
1990 has a much larger code and data size.
1993 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1994 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1996 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1997 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2000 2) iASL Compiler/Disassembler and Tools:
2002 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
2003 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
2004 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
2006 Disassembler: Fixed a problem with external declaration generation. Fixes
2007 a problem where an incorrect pathname could be generated for an external
2008 declaration if the original reference to the object includes leading
2009 carats (^). ACPICA BZ 984.
2011 Debugger: Completed a major update for the Disassemble<method> command.
2012 This command was out-of-date and did not properly disassemble control
2013 methods that had any reasonable complexity. This fix brings the command
2015 to the same level as the rest of the disassembler. Adds one new file,
2016 dmdeferred.c, which is existing code that is now common with the main
2017 disassembler and the debugger disassemble command. ACPICA MZ 978.
2019 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
2020 Newer versions of Bison emit this prototype, so moved the prototype out
2022 the iASL header to where it is actually used in order to avoid a
2026 iASL/Tools: Standardized use of the stream I/O functions:
2027 1) Ensure check for I/O error after every fopen/fread/fwrite
2028 2) Ensure proper order of size/count arguments for fread/fwrite
2029 3) Use test of (Actual != Requested) after all fwrite, and most fread
2030 4) Standardize I/O error messages
2031 Improves reliability and maintainability of the code. Bob Moore, Lv
2035 Disassembler: Prevent duplicate External() statements. During generation
2036 of external statements, detect similar pathnames that are actually
2037 duplicates such as these:
2040 Remove all leading '\' characters from pathnames during the external
2041 statement generation so that duplicates will be detected and tossed.
2044 Tools: Replace low-level I/O with stream I/O functions. Replace
2045 open/read/write/close with the stream I/O equivalents
2046 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
2049 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
2050 name header so that AcpiXtract recognizes the output file/table.
2052 iASL: Remove obsolete -2 option flag. Originally intended to force the
2053 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
2054 and the entire concept is now obsolete.
2056 ----------------------------------------
2057 18 October 2012. Summary of changes for version 20121018:
2060 1) ACPICA Kernel-resident Subsystem:
2062 Updated support for the ACPI 5.0 MPST table. Fixes some problems
2063 introduced by late changes to the table as it was added to the ACPI 5.0
2064 specification. Includes header, disassembler, and data table compiler
2065 support as well as a new version of the MPST template.
2067 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
2068 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
2069 methods: _HID, _CID, and _UID.
2071 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
2072 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
2073 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
2074 names for their various drivers. Affects the AcpiGetObjectInfo external
2075 interface, and other internal interfaces as well.
2077 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
2078 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
2079 on machines that support non-aligned transfers. Optimizes for this case
2080 rather than using a strncpy. With assistance from Zheng Lv.
2082 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
2083 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
2085 Added a new debug print message for AML mutex objects that are force-
2086 released. At control method termination, any currently acquired mutex
2087 objects are force-released. Adds a new debug-only message for each one
2090 Audited/updated all ACPICA return macros and the function debug depth
2091 counter: 1) Ensure that all functions that use the various TRACE macros
2092 also use the appropriate ACPICA return macros. 2) Ensure that all normal
2093 return statements surround the return expression (value) with parens to
2094 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
2095 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
2097 Global source code changes/maintenance: All extra lines at the start and
2098 end of each source file have been removed for consistency. Also, within
2099 comments, all new sentences start with a single space instead of a double
2100 space, again for consistency across the code base.
2102 Example Code and Data Size: These are the sizes for the OS-independent
2103 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2104 debug version of the code includes the debug output trace mechanism and
2105 has a much larger code and data size.
2108 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2109 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2111 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2112 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2115 2) iASL Compiler/Disassembler and Tools:
2117 AcpiExec: Improved the algorithm used for memory leak/corruption
2118 detection. Added some intelligence to the code that maintains the global
2119 list of allocated memory. The list is now ordered by allocated memory
2120 address, significantly improving performance. When running AcpiExec on
2121 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
2122 on the platform and/or the environment. Note, this performance
2123 enhancement affects the AcpiExec utility only, not the kernel-resident
2126 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
2127 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
2128 incorrect table offset reported for invalid opcodes. Report the original
2129 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
2131 Disassembler: Enhanced the -vt option to emit the binary table data in
2132 hex format to assist with debugging.
2134 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
2135 size of file structure. Colin Ian King.
2137 ----------------------------------------
2138 13 September 2012. Summary of changes for version 20120913:
2141 1) ACPICA Kernel-resident Subsystem:
2143 ACPI 5.0: Added two new notify types for the Hardware Error Notification
2144 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
2148 Table Manager: Merged/removed duplicate code in the root table resize
2149 functions. One function is external, the other is internal. Lv Zheng,
2153 Makefiles: Completely removed the obsolete "Linux" makefiles under
2154 acpica/generate/linux. These makefiles are obsolete and have been
2157 the generic unix makefiles under acpica/generate/unix.
2159 Makefiles: Ensure that binary files always copied properly. Minor rule
2161 to ensure that the final binary output files are always copied up to the
2162 appropriate binary directory (bin32 or bin64.)
2164 Example Code and Data Size: These are the sizes for the OS-independent
2165 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2167 version of the code includes the debug output trace mechanism and has a
2169 larger code and data size.
2172 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2173 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2175 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2176 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2179 2) iASL Compiler/Disassembler and Tools:
2181 Disassembler: Fixed a possible fault during the disassembly of resource
2182 descriptors when a second parse is required because of the invocation of
2183 external control methods within the table. With assistance from
2184 adq@lidskialf.net. ACPICA BZ 976.
2186 iASL: Fixed a namepath optimization problem. An error can occur if the
2188 node that contains the namepath to be optimized does not have a parent
2190 that is a named object. This change fixes the problem.
2192 iASL: Fixed a regression where the AML file is not deleted on errors. The
2194 output file should be deleted if there are any errors during the
2197 only exception is if the -f (force output) option is used. ACPICA BZ 974.
2199 iASL: Added a feature to automatically increase internal line buffer
2201 Via realloc(), automatically increase the internal line buffer sizes as
2202 necessary to support very long source code lines. The current version of
2204 preprocessor requires a buffer long enough to contain full source code
2206 This change increases the line buffer(s) if the input lines go beyond the
2207 current buffer size. This eliminates errors that occurred when a source
2209 line was longer than the buffer.
2211 iASL: Fixed a problem with constant folding in method declarations. The
2212 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
2214 Type3 opcode was used.
2216 Debugger: Improved command help support. For incorrect argument count,
2218 full help for the command. For help command itself, allow an argument to
2221 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
2222 errors during execution of the suite. Guan Chao.
2224 ----------------------------------------
2225 16 August 2012. Summary of changes for version 20120816:
2228 1) ACPICA Kernel-resident Subsystem:
2230 Removed all use of the deprecated _GTS and _BFS predefined methods. The
2232 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
2233 deprecated and will probably be removed from the ACPI specification.
2235 does not invoke them, and reportedly never will. The final nail in the
2237 is that the ACPI specification states that these methods must be run with
2238 interrupts off, which is not going to happen in a kernel interpreter.
2240 Linux has removed all use of the methods also. It was discovered that
2241 invoking these functions caused failures on some machines, probably
2243 they were never tested since Windows does not call them. Affects two
2245 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
2248 Implemented support for complex bit-packed buffers returned from the _PLD
2249 (Physical Location of Device) predefined method. Adds a new external
2250 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
2252 structure. Note: C Bitfields cannot be used for this type of predefined
2253 structure since the memory layout of individual bitfields is not defined
2255 the C language. In addition, there are endian concerns where a compiler
2257 change the bitfield ordering based on the machine type. The new ACPICA
2258 interface eliminates these issues, and should be called after _PLD is
2259 executed. ACPICA BZ 954.
2261 Implemented a change to allow a scope change to root (via "Scope (\)")
2263 execution of module-level ASL code (code that is executed at table load
2266 Added the Windows8/Server2012 string for the _OSI method. This change
2269 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
2272 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
2274 and CSRT (Core System Resource Table).
2276 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
2277 names. This simplifies access to the buffers returned by these predefined
2278 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
2280 GPE support: Removed an extraneous parameter from the various low-level
2281 internal GPE functions. Tang Feng.
2283 Removed the linux makefiles from the unix packages. The generate/linux
2284 makefiles are obsolete and have been removed from the unix tarball
2286 packages. The replacement makefiles are under generate/unix, and there is
2288 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
2290 Updates for Unix makefiles:
2291 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
2292 2) Update linker flags (move to end of command line) for AcpiExec
2296 Split ACPICA initialization functions to new file, utxfinit.c. Split from
2297 utxface.c to improve modularity and reduce file size.
2299 Example Code and Data Size: These are the sizes for the OS-independent
2300 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2301 debug version of the code includes the debug output trace mechanism and
2303 much larger code and data size.
2306 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2307 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2309 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2310 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2313 2) iASL Compiler/Disassembler and Tools:
2315 iASL: Fixed a problem with constant folding for fixed-length constant
2316 expressions. The constant-folding code was not being invoked for constant
2317 expressions that allow the use of type 3/4/5 opcodes to generate
2319 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
2321 in the generation of invalid AML bytecode. ACPICA BZ 970.
2323 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
2324 apparently automatically emit some of the necessary externals. This
2326 handles these versions in order to eliminate generation warnings.
2328 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
2330 Disassembler: Add support to decode _PLD buffers. The decoded buffer
2332 within comments in the output file.
2334 Debugger: Fixed a regression with the "Threads" command where
2335 AE_BAD_PARAMETER was always returned.
2337 ----------------------------------------
2338 11 July 2012. Summary of changes for version 20120711:
2340 1) ACPICA Kernel-resident Subsystem:
2342 Fixed a possible fault in the return package object repair code. Fixes a
2343 problem that can occur when a lone package object is wrapped with an
2345 package object in order to force conformance to the ACPI specification.
2347 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
2351 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
2352 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
2353 ARB_DIS bit must be implemented in the host-dependent C3 processor power
2355 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
2357 Intel and other vendors. (for Intel: ICH4-M and earlier)
2359 This change removes the code to disable/enable bus master arbitration
2361 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
2363 resume problems on some machines. The change has been in use for over
2367 Implemented two new external interfaces to support host-directed dynamic
2369 table load and unload. They are intended to simplify the host
2371 of hot-plug support:
2372 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
2373 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
2375 See the ACPICA reference for additional details. Adds one new file,
2376 components/tables/tbxfload.c
2378 Implemented and deployed two new interfaces for errors and warnings that
2380 known to be caused by BIOS/firmware issues:
2381 AcpiBiosError: Prints "ACPI Firmware Error" message.
2382 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
2383 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
2385 and FADT errors. Additional deployment to be completed as appropriate in
2387 future. The associated conditional macros are ACPI_BIOS_ERROR and
2388 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
2393 Implicit notify support: ensure that no memory allocation occurs within a
2394 critical region. This fix moves a memory allocation outside of the time
2396 spinlock is held. Fixes issues on systems that do not allow this
2400 Split exception code utilities and tables into a new file,
2403 Example Code and Data Size: These are the sizes for the OS-independent
2404 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2406 version of the code includes the debug output trace mechanism and has a
2408 larger code and data size.
2411 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2412 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2414 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2415 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2418 2) iASL Compiler/Disassembler and Tools:
2420 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
2424 Debugger: Enhanced the "tables" command to emit additional information
2426 the current set of ACPI tables, including the owner ID and flags decode.
2428 Debugger: Reimplemented the "unload" command to use the new
2429 AcpiUnloadParentTable external interface. This command was disable
2431 due to need for an unload interface.
2433 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
2435 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
2437 ----------------------------------------
2438 20 June 2012. Summary of changes for version 20120620:
2441 1) ACPICA Kernel-resident Subsystem:
2443 Implemented support to expand the "implicit notify" feature to allow
2445 devices to be notified by a single GPE. This feature automatically
2447 runtime device notification in the absence of a BIOS-provided GPE control
2448 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
2450 provided by ACPICA for Windows compatibility, and is a workaround for
2453 code errors. See the description of the AcpiSetupGpeForWake interface in
2455 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
2457 Changed some comments and internal function names to simplify and ensure
2458 correctness of the Linux code translation. No functional changes.
2460 Example Code and Data Size: These are the sizes for the OS-independent
2461 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2463 version of the code includes the debug output trace mechanism and has a
2465 larger code and data size.
2468 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2469 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2471 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2472 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2475 2) iASL Compiler/Disassembler and Tools:
2477 Disassembler: Added support to emit short, commented descriptions for the
2479 predefined names in order to improve the readability of the disassembled
2480 output. ACPICA BZ 959. Changes include:
2481 1) Emit descriptions for all standard predefined names (_INI, _STA,
2484 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
2485 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
2488 AcpiSrc: Fixed several long-standing Linux code translation issues.
2490 descriptions in function headers are now translated properly to lower
2493 underscores. ACPICA BZ 961. Also fixes translation problems such as
2499 local_fADT -> local_FADT
2500 execute_oSI -> execute_OSI
2502 iASL: Fixed a problem where null bytes were inadvertently emitted into
2506 iASL: Added the existing debug options to the standard help screen. There
2508 no longer two different help screens. ACPICA BZ 957.
2510 AcpiHelp: Fixed some typos in the various predefined name descriptions.
2512 expand some of the descriptions where appropriate.
2514 iASL: Fixed the -ot option (display compile times/statistics). Was not
2516 properly for standard output; only worked for the debug file case.
2518 ----------------------------------------
2519 18 May 2012. Summary of changes for version 20120518:
2522 1) ACPICA Core Subsystem:
2524 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
2526 to block until asynchronous events such as notifies and GPEs have
2528 Within ACPICA, it is only called before a notify or GPE handler is
2529 removed/uninstalled. It also may be useful for the host OS within related
2530 drivers such as the Embedded Controller driver. See the ACPICA reference
2532 additional information. ACPICA BZ 868.
2534 ACPI Tables: Added a new error message for a possible overflow failure
2536 the conversion of FADT 32-bit legacy register addresses to internal
2539 bit GAS structure representation. The GAS has a one-byte "bit length"
2541 thus limiting the register length to 255 bits. ACPICA BZ 953.
2543 Example Code and Data Size: These are the sizes for the OS-independent
2544 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2546 version of the code includes the debug output trace mechanism and has a
2548 larger code and data size.
2551 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2552 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2554 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2555 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2558 2) iASL Compiler/Disassembler and Tools:
2560 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
2562 This keyword was added late in the ACPI 5.0 release cycle and was not
2563 implemented until now.
2565 Disassembler: Added support for Operation Region externals. Adds missing
2566 support for operation regions that are defined in another table, and
2567 referenced locally via a Field or BankField ASL operator. Now generates
2569 correct External statement.
2571 Disassembler: Several additional fixes for the External() statement
2573 related to some ASL operators. Also, order the External() statements
2574 alphabetically in the disassembler output. Fixes the External()
2577 the Create* field, Alias, and Scope operators:
2578 1) Create* buffer field operators - fix type mismatch warning on
2580 2) Alias - implement missing External support
2581 3) Scope - fix to make sure all necessary externals are emitted.
2583 iASL: Improved pathname support. For include files, merge the prefix
2585 with the file pathname and eliminate unnecessary components. Convert
2586 backslashes in all pathnames to forward slashes, for readability. Include
2588 pathname changes affect both #include and Include() type operators.
2590 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
2592 of a valid line by inserting a newline and then returning the EOF during
2594 next call to GetNextLine. Prevents the line from being ignored due to EOF
2597 iASL: Implemented some changes to enhance the IDE support (-vi option.)
2599 and Warning messages are now correctly recognized for both the source
2601 browser and the global error and warning counts.
2603 ----------------------------------------
2604 20 April 2012. Summary of changes for version 20120420:
2607 1) ACPICA Core Subsystem:
2609 Implemented support for multiple notify handlers. This change adds
2612 allow multiple system and device notify handlers on Device, Thermal Zone,
2614 Processor objects. This can simplify the host OS notification
2616 Also re-worked and restructured the entire notify support code to
2618 handler installation, handler removal, notify event queuing, and notify
2619 dispatch to handler(s). Note: there can still only be two global notify
2620 handlers - one for system notifies and one for device notifies. There are
2622 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2623 Moore, Rafael Wysocki.
2625 Fixed a regression in the package repair code where the object reference
2626 count was calculated incorrectly. Regression was introduced in the commit
2627 "Support to add Package wrappers".
2629 Fixed a couple possible memory leaks in the AML parser, in the error
2631 path. Jesper Juhl, Lin Ming.
2633 Example Code and Data Size: These are the sizes for the OS-independent
2634 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2635 debug version of the code includes the debug output trace mechanism and
2637 much larger code and data size.
2640 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2641 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2643 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2644 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2647 2) iASL Compiler/Disassembler and Tools:
2649 iASL: Fixed a problem with the resource descriptor support where the
2651 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2652 included in cumulative descriptor offset, resulting in incorrect values
2654 resource tags within resource descriptors appearing after a
2656 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2658 iASL and Preprocessor: Implemented full support for the #line directive
2660 correctly track original source file line numbers through the .i
2662 output file - for error and warning messages.
2664 iASL: Expand the allowable byte constants for address space IDs.
2666 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2667 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2669 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2671 iASL: Add option to completely disable the preprocessor (-Pn).
2673 iASL: Now emit all error/warning messages to standard error (stderr) by
2674 default (instead of the previous stdout).
2676 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2678 for resource descriptor offset fix above. Update/cleanup error output
2679 routines. Enable and send iASL errors/warnings to an error logfile
2680 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2682 several extraneous "unrecognized operator" messages.
2684 ----------------------------------------
2685 20 March 2012. Summary of changes for version 20120320:
2688 1) ACPICA Core Subsystem:
2690 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2691 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2693 does not execute these methods, and therefore these methods are often
2694 untested. It has been seen on some systems where the execution of these
2695 methods causes errors and also prevents the machine from entering S5. It
2697 therefore suggested that host operating systems do not execute these
2699 by default. In the future, perhaps these methods can be optionally
2701 based on the age of the system and/or what is the newest version of
2703 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2705 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2708 Fixed a problem where the length of the local/common FADT was set too
2710 The local FADT table length cannot be set to the common length until the
2711 original length has been examined. There is code that checks the table
2713 and sets various fields appropriately. This can affect older machines
2715 early FADT versions. For example, this can cause inadvertent writes to
2717 CST_CNT register. Julian Anastasov.
2719 Fixed a mapping issue related to a physical table override. Use the
2721 mapping mechanism for tables loaded via the physical override OSL
2723 This allows for early mapping before the virtual memory manager is
2725 Thomas Renninger, Bob Moore.
2727 Enhanced the automatic return-object repair code: Repair a common problem
2729 predefined methods that are defined to return a variable-length Package
2731 sub-objects. If there is only one sub-object, some BIOS ASL code
2733 simply returns the single object instead of a Package with one sub-
2735 This new support will repair this error by wrapping a Package object
2737 the original object, creating the correct and expected Package with one
2739 object. Names that can be repaired in this manner include: _ALR, _CSD,
2741 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2744 Changed the exception code returned for invalid ACPI paths passed as
2745 parameters to external interfaces such as AcpiEvaluateObject. Was
2746 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2748 Example Code and Data Size: These are the sizes for the OS-independent
2749 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2751 version of the code includes the debug output trace mechanism and has a
2753 larger code and data size.
2756 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2757 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2759 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2760 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2763 2) iASL Compiler/Disassembler and Tools:
2765 iASL: Added the infrastructure and initial implementation of a integrated
2767 like preprocessor. This will simplify BIOS development process by
2769 the need for a separate preprocessing step during builds. On Windows, it
2771 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2772 features including full #define() macro support are still under
2774 These preprocessor directives are supported:
2787 In addition, these new command line options are supported:
2788 -D <symbol> Define symbol for preprocessor use
2789 -li Create preprocessed output file (*.i)
2790 -P Preprocess only and create preprocessor output file (*.i)
2792 Table Compiler: Fixed a problem where the equals operator within an
2794 did not work properly.
2796 Updated iASL to use the current versions of Bison/Flex. Updated the
2798 project file to invoke these tools from the standard location. ACPICA BZ
2801 Flex for Windows: V2.5.4
2802 Bison for Windows: V2.4.1
2804 ----------------------------------------
2805 15 February 2012. Summary of changes for version 20120215:
2808 1) ACPICA Core Subsystem:
2810 There have been some major changes to the sleep/wake support code, as
2811 described below (a - e).
2813 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2814 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2815 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2817 time the _BFS method is called and the _WAK method is called. NOTE: all
2819 must update their wake/resume code or else sleep/wake will not work
2823 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2825 method. Some machines require that the GPEs are enabled before the _WAK
2827 is executed. Thomas Renninger.
2829 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2831 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2833 determine whether the system is rebooting or resuming. Matthew Garrett.
2835 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2837 match the ACPI specification requirement. Rafael Wysocki.
2839 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2840 registers within the V5 FADT. This support adds two new files:
2841 hardware/hwesleep.c implements the support for the new registers. Moved
2843 sleep/wake external interfaces to hardware/hwxfsleep.c.
2846 Added a new OSL interface for ACPI table overrides,
2847 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2848 table via a physical address, instead of the logical address required by
2849 AcpiOsTableOverride. This simplifies the host implementation. Initial
2850 implementation by Thomas Renninger. The ACPICA implementation creates a
2852 shared function for table overrides that attempts both a logical and a
2855 Expanded the OSL memory read/write interfaces to 64-bit data
2856 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2857 transfer support for GAS register structures passed to AcpiRead and
2860 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2862 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2864 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2866 10% of the code and 5% of the static data, and the following hardware
2868 features become unavailable:
2869 PM Event and Control registers
2870 SCI interrupt (and handler)
2872 General Purpose Events (GPEs)
2875 FACS table (Waking vectors and Global Lock)
2877 Updated the unix tarball directory structure to match the ACPICA git
2879 tree. This ensures that the generic unix makefiles work properly (in
2880 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2883 Updated the return value of the _REV predefined method to integer value 5
2885 reflect ACPI 5.0 support.
2887 Moved the external ACPI PM timer interface prototypes to the public
2889 file where they belong.
2891 Example Code and Data Size: These are the sizes for the OS-independent
2892 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2894 version of the code includes the debug output trace mechanism and has a
2896 larger code and data size.
2899 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2900 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2902 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2903 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2906 2) iASL Compiler/Disassembler and Tools:
2908 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2909 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2910 incorrectly displayed.
2912 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2915 ----------------------------------------
2916 11 January 2012. Summary of changes for version 20120111:
2919 1) ACPICA Core Subsystem:
2921 Implemented a new mechanism to allow host device drivers to check for
2923 range conflicts with ACPI Operation Regions. Both SystemMemory and
2925 address spaces are supported. A new external interface,
2926 AcpiCheckAddressRange,
2927 allows drivers to check an address range against the ACPI namespace. See
2929 ACPICA reference for additional details. Adds one new file,
2930 utilities/utaddress.c. Lin Ming, Bob Moore.
2932 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2935 Status registers, update the ACPI 5.0 flags, and update internal data
2936 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2940 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2942 all module headers and signons, including the standard Linux header. This
2943 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2945 all ACPICA utilities.
2947 Example Code and Data Size: These are the sizes for the OS-independent
2948 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2950 version of the code includes the debug output trace mechanism and has a
2952 larger code and data size.
2955 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2956 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2958 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2959 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2962 2) iASL Compiler/Disassembler and Tools:
2964 Disassembler: fixed a problem with the automatic resource tag generation
2965 support. Fixes a problem where the resource tags are inadvertently not
2966 constructed if the table being disassembled contains external references
2968 control methods. Moved the actual construction of the tags to after the
2970 namespace is constructed (after 2nd parse is invoked due to external
2972 method references.) ACPICA BZ 941.
2974 Table Compiler: Make all "generic" operators caseless. These are the
2976 like UINT8, String, etc. Making these caseless improves ease-of-use.
2980 ----------------------------------------
2981 23 November 2011. Summary of changes for version 20111123:
2983 0) ACPI 5.0 Support:
2985 This release contains full support for the ACPI 5.0 specification, as
2988 Reduced Hardware Support:
2989 -------------------------
2991 This support allows for ACPI systems without the usual ACPI hardware.
2993 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2995 not attempt to initialize or use any of the usual ACPI hardware. Note,
2997 this flag is set, all of the following ACPI hardware is assumed to be not
2998 present and is not initialized or accessed:
3000 General Purpose Events (GPEs)
3001 Fixed Events (PM1a/PM1b and PM Control)
3002 Power Management Timer and Console Buttons (power/sleep)
3003 Real-time Clock Alarm
3005 System Control Interrupt (SCI)
3006 The FACS is assumed to be non-existent
3011 All new tables and updates to existing tables are fully supported in the
3012 ACPICA headers (for use by device drivers), the disassembler, and the
3014 Data Table Compiler. ACPI 5.0 defines these new tables:
3016 BGRT /* Boot Graphics Resource Table */
3017 DRTM /* Dynamic Root of Trust for Measurement table */
3018 FPDT /* Firmware Performance Data Table */
3019 GTDT /* Generic Timer Description Table */
3020 MPST /* Memory Power State Table */
3021 PCCT /* Platform Communications Channel Table */
3022 PMTT /* Platform Memory Topology Table */
3023 RASF /* RAS Feature table */
3025 Operation Regions/SpaceIDs:
3026 ---------------------------
3028 All new operation regions are fully supported by the iASL compiler, the
3029 disassembler, and the ACPICA runtime code (for dispatch to region
3031 The new operation region Space IDs are:
3036 Resource Descriptors:
3037 ---------------------
3039 All new ASL resource descriptors are fully supported by the iASL
3042 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
3044 all new predefined resource tags). New descriptors are:
3053 ASL/AML Operators, New and Modified:
3054 ------------------------------------
3056 One new operator is added, the Connection operator, which is used to
3058 a GeneralPurposeIo or GenericSerialBus resource descriptor with
3060 field objects within an operation region. Several new protocols are
3062 with the AccessAs operator. All are fully supported by the iASL compiler,
3063 disassembler, and runtime ACPICA AML interpreter:
3065 Connection // Declare Field Connection
3067 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
3068 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
3070 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
3071 RawDataBuffer // Data type for Vendor Data
3074 Predefined ASL/AML Objects:
3075 ---------------------------
3077 All new predefined objects/control-methods are supported by the iASL
3079 and the ACPICA runtime validation/repair (arguments and return values.)
3081 predefined names include the following:
3083 Standard Predefined Names (Objects or Control Methods):
3084 _AEI, _CLS, _CPC, _CWS, _DEP,
3085 _DLM, _EVT, _GCP, _CRT, _GWS,
3086 _HRV, _PRE, _PSE, _SRT, _SUB.
3088 Resource Tags (Names used to access individual fields within resource
3090 _DBT, _DPL, _DRS, _END, _FLC,
3091 _IOR, _LIN, _MOD, _PAR, _PHA,
3092 _PIN, _PPI, _POL, _RXL, _SLV,
3093 _SPE, _STB, _TXL, _VEN.
3095 ACPICA External Interfaces:
3096 ---------------------------
3098 Several new interfaces have been defined for use by ACPI-related device
3099 drivers and other host OS services:
3101 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
3103 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
3104 provided by the BIOS. They are intended to be used in conjunction with
3106 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
3107 mutual exclusion with the AML code/interpreter.
3109 AcpiGetEventResources: Returns the (formatted) resource descriptors as
3111 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
3113 resource descriptors associated with hardware-reduced platform events,
3115 to the AcpiGetCurrentResources interface.
3117 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
3118 operation regions, information about the Connection() object and any
3120 length information is passed to the region handler within the Context
3123 AcpiBufferToResource: This interface converts a raw AML buffer containing
3125 resource template or resource descriptor to the ACPI_RESOURCE internal
3127 suitable for use by device drivers. Can be used by an operation region
3129 to convert the Connection() buffer object into a ACPI_RESOURCE.
3131 Miscellaneous/Tools/TestSuites:
3132 -------------------------------
3134 Support for extended _HID names (Four alpha characters instead of three).
3135 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
3136 Support for ACPI 5.0 features in the ASLTS test suite.
3137 Fully updated documentation (ACPICA and iASL reference documents.)
3139 ACPI Table Definition Language:
3140 -------------------------------
3142 Support for this language was implemented and released as a subsystem of
3144 iASL compiler in 2010. (See the iASL compiler User Guide.)
3147 Non-ACPI 5.0 changes for this release:
3148 --------------------------------------
3150 1) ACPICA Core Subsystem:
3152 Fix a problem with operation region declarations where a failure can
3155 the region name and an argument that evaluates to an object (such as the
3156 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
3159 Do not abort an ACPI table load if an invalid space ID is found within.
3161 will be caught later if the offending method is executed. ACPICA BZ 925.
3163 Fixed an issue with the FFixedHW space ID where the ID was not always
3164 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
3166 Fixed a problem with the 32-bit generation of the unix-specific OSL
3167 (osunixxf.c). Lin Ming, ACPICA BZ 936.
3169 Several changes made to enable generation with the GCC 4.6 compiler.
3173 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
3175 field registers out-of-range.
3177 2) iASL Compiler/Disassembler and Tools:
3179 iASL: Implemented the __PATH__ operator, which returns the full pathname
3181 the current source file.
3183 AcpiHelp: Automatically display expanded keyword information for all ASL
3186 Debugger: Add "Template" command to disassemble/dump resource template
3189 Added a new master script to generate and execute the ASLTS test suite.
3190 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
3192 iASL: Fix problem with listing generation during processing of the
3194 operator where AML listing was disabled until the entire Switch block was
3197 iASL: Improve support for semicolon statement terminators. Fix "invalid
3198 character" message for some cases when the semicolon is used. Semicolons
3200 now allowed after every <Term> grammar element. ACPICA BZ 927.
3202 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
3205 Disassembler: Fix problem with disassembly of the DataTableRegion
3207 where an inadvertent "Unhandled deferred opcode" message could be
3210 3) Example Code and Data Size
3212 These are the sizes for the OS-independent acpica.lib produced by the
3213 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3214 includes the debug output trace mechanism and has a much larger code and
3219 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3220 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3222 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3223 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3225 ----------------------------------------
3226 22 September 2011. Summary of changes for version 20110922:
3230 Support for ACPI 5.0 in ACPICA has been underway for several months and
3232 be released at the same time that ACPI 5.0 is officially released.
3234 The ACPI 5.0 specification is on track for release in the next few
3237 1) ACPICA Core Subsystem:
3239 Fixed a problem where the maximum sleep time for the Sleep() operator was
3240 intended to be limited to two seconds, but was inadvertently limited to
3244 Linux and Unix makefiles: Added header file dependencies to ensure
3246 generation of ACPICA core code and utilities. Also simplified the
3248 considerably through the use of the vpath variable to specify search
3252 2) iASL Compiler/Disassembler and Tools:
3254 iASL: Implemented support to check the access length for all fields
3256 access named Resource Descriptor fields. For example, if a resource field
3258 defined to be two bits, a warning is issued if a CreateXxxxField() is
3260 with an incorrect bit length. This is implemented for all current
3262 descriptor names. ACPICA BZ 930.
3264 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
3268 iASL: Fixed a couple of issues associated with variable-length package
3269 objects. 1) properly handle constants like One, Ones, Zero -- do not make
3271 VAR_PACKAGE when these are used as a package length. 2) Allow the
3273 opcode (in addition to PACKAGE) when validating object types for
3277 iASL: Emit statistics for all output files (instead of just the ASL input
3279 AML output). Includes listings, hex files, etc.
3281 iASL: Added -G option to the table compiler to allow the compilation of
3283 ACPI tables. The only part of a table that is required is the standard
3288 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
3290 which also adds correct 64-bit support. Also, now all output filenames
3292 completely lower case.
3294 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
3295 loading table files. A warning is issued for any such tables. The only
3296 exception is an FADT. This also fixes a possible fault when attempting to
3298 non-AML tables. ACPICA BZ 932.
3300 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
3302 missing table terminator could cause a fault when using the -p option.
3304 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
3307 3) Example Code and Data Size
3309 These are the sizes for the OS-independent acpica.lib produced by the
3310 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3311 includes the debug output trace mechanism and has a much larger code and
3315 Previous Release (VC 9.0):
3316 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3317 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3318 Current Release (VC 9.0):
3319 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3320 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3323 ----------------------------------------
3324 23 June 2011. Summary of changes for version 20110623:
3326 1) ACPI CA Core Subsystem:
3328 Updated the predefined name repair mechanism to not attempt repair of a
3330 return object if a _PSS object is present. We can only sort the _TSS
3332 package if there is no _PSS within the same scope. This is because if
3335 present, the ACPI specification dictates that the _TSS Power Dissipation
3337 is to be ignored, and therefore some BIOSs leave garbage values in the
3339 Power field(s). In this case, it is best to just return the _TSS package
3341 is. Reported by, and fixed with assistance from Fenghua Yu.
3343 Added an option to globally disable the control method return value
3345 and repair. This runtime option can be used to disable return value
3348 this is causing a problem on a particular machine. Also added an option
3350 AcpiExec (-dr) to set this disable flag.
3352 All makefiles and project files: Major changes to improve generation of
3354 tools. ACPICA BZ 912:
3355 Reduce default optimization levels to improve compatibility
3356 For Linux, add strict-aliasing=0 for gcc 4
3357 Cleanup and simplify use of command line defines
3358 Cleanup multithread library support
3359 Improve usage messages
3361 Linux-specific header: update handling of THREAD_ID and pthread. For the
3363 bit case, improve casting to eliminate possible warnings, especially with
3367 Example Code and Data Size: These are the sizes for the OS-independent
3368 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3370 version of the code includes the debug output trace mechanism and has a
3372 larger code and data size.
3374 Previous Release (VC 9.0):
3375 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3376 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3377 Current Release (VC 9.0):
3378 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3379 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3381 2) iASL Compiler/Disassembler and Tools:
3383 With this release, a new utility named "acpihelp" has been added to the
3385 package. This utility summarizes the ACPI specification chapters for the
3387 and AML languages. It generates under Linux/Unix as well as Windows, and
3388 provides the following functionality:
3389 Find/display ASL operator(s) -- with description and syntax.
3390 Find/display ASL keyword(s) -- with exact spelling and descriptions.
3391 Find/display ACPI predefined name(s) -- with description, number
3392 of arguments, and the return value data type.
3393 Find/display AML opcode name(s) -- with opcode, arguments, and
3395 Decode/display AML opcode -- with opcode name, arguments, and
3398 Service Layers: Make multi-thread support configurable. Conditionally
3400 the multi-thread support so that threading libraries will not be linked
3403 necessary. The only tool that requires multi-thread support is AcpiExec.
3405 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
3407 Bison appear to want the interface to yyerror to be a const char * (or at
3408 least this is a problem when generating iASL on some systems.) ACPICA BZ
3412 Tools: Fix for systems where O_BINARY is not defined. Only used for
3414 versions of the tools.
3416 ----------------------------------------
3417 27 May 2011. Summary of changes for version 20110527:
3419 1) ACPI CA Core Subsystem:
3421 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
3423 signature. Now, only allow SSDT, OEMx, and a null signature. History:
3424 1) Originally, we checked the table signature for "SSDT" or "PSDT".
3425 (PSDT is now obsolete.)
3426 2) We added support for OEMx tables, signature "OEM" plus a fourth
3427 "don't care" character.
3428 3) Valid tables were encountered with a null signature, so we just
3429 gave up on validating the signature, (05/2008).
3430 4) We encountered non-AML tables such as the MADT, which caused
3431 interpreter errors and kernel faults. So now, we once again allow
3432 only SSDT, OEMx, and now, also a null signature. (05/2011).
3434 Added the missing _TDL predefined name to the global name list in order
3436 enable validation. Affects both the core ACPICA code and the iASL
3439 Example Code and Data Size: These are the sizes for the OS-independent
3440 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3442 version of the code includes the debug output trace mechanism and has a
3444 larger code and data size.
3446 Previous Release (VC 9.0):
3447 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3448 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3449 Current Release (VC 9.0):
3450 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3451 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3453 2) iASL Compiler/Disassembler and Tools:
3455 Debugger/AcpiExec: Implemented support for "complex" method arguments on
3457 debugger command line. This adds support beyond simple integers --
3459 Strings, Buffers, and Packages. Includes support for nested packages.
3460 Increased the default command line buffer size to accommodate these
3462 See the ACPICA reference for details and syntax. ACPICA BZ 917.
3464 Debugger/AcpiExec: Implemented support for "default" method arguments for
3466 Execute/Debug command. Now, the debugger will always invoke a control
3468 with the required number of arguments -- even if the command line
3470 none or insufficient arguments. It uses default integer values for any
3472 arguments. Also fixes a bug where only six method arguments maximum were
3473 supported instead of the required seven.
3475 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
3477 also return status in order to prevent buffer overruns. See the ACPICA
3478 reference for details and syntax. ACPICA BZ 921
3480 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
3481 makefiles to simplify support for the two different but similar parser
3482 generators, bison and yacc.
3484 Updated the generic unix makefile for gcc 4. The default gcc version is
3486 expected to be 4 or greater, since options specific to gcc 4 are used.
3488 ----------------------------------------
3489 13 April 2011. Summary of changes for version 20110413:
3491 1) ACPI CA Core Subsystem:
3493 Implemented support to execute a so-called "orphan" _REG method under the
3495 device. This change will force the execution of a _REG method underneath
3498 device even if there is no corresponding operation region of type
3499 EmbeddedControl. Fixes a problem seen on some machines and apparently is
3500 compatible with Windows behavior. ACPICA BZ 875.
3502 Added more predefined methods that are eligible for automatic NULL
3504 element removal. This change adds another group of predefined names to
3507 of names that can be repaired by having NULL package elements dynamically
3508 removed. This group are those methods that return a single variable-
3510 package containing simple data types such as integers, buffers, strings.
3512 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
3515 and _TZD. ACPICA BZ 914.
3517 Split and segregated all internal global lock functions to a new file,
3520 Updated internal address SpaceID for DataTable regions. Moved this
3523 id in preparation for ACPI 5.0 changes that will include some new space
3526 change should not affect user/host code.
3528 Example Code and Data Size: These are the sizes for the OS-independent
3530 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3532 the code includes the debug output trace mechanism and has a much larger
3537 Previous Release (VC 9.0):
3538 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3539 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3540 Current Release (VC 9.0):
3541 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3542 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3544 2) iASL Compiler/Disassembler and Tools:
3546 iASL/DTC: Major update for new grammar features. Allow generic data types
3548 custom ACPI tables. Field names are now optional. Any line can be split
3550 multiple lines using the continuation char (\). Large buffers now use
3552 continuation character(s) and no colon on the continuation lines. See the
3554 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
3557 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
3559 Since the parser stuffs a "zero" as the return value for these statements
3562 the underlying AML grammar), they were seen as "return with value" by the
3564 semantic checking. They are now seen correctly as "null" return
3567 iASL: Check if a_REG declaration has a corresponding Operation Region.
3569 check for each _REG to ensure that there is in fact a corresponding
3571 region declaration in the same scope. If not, the _REG method is not very
3573 since it probably won't be executed. ACPICA BZ 915.
3575 iASL/DTC: Finish support for expression evaluation. Added a new
3578 that implements c-style operator precedence and parenthesization. ACPICA
3582 Disassembler/DTC: Remove support for () and <> style comments in data
3585 that DTC has full expression support, we don't want to have comment
3588 start with a parentheses or a less-than symbol. Now, only the standard /*
3591 comments are supported, as well as the bracket [] comments.
3593 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
3595 headers in the acpidump file. Update the header validation to support
3597 tables. Problem introduced in previous AcpiXtract version in the change
3599 support "wrong checksum" error messages emitted by acpidump utility.
3601 iASL: Add a * option to generate all template files (as a synonym for
3605 "iasl -T *" or "iasl -T ALL".
3607 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
3609 abort the compiler on "fatal" errors, simply should abort the current
3611 This allows multiple compiles with a single (possibly wildcard) compiler
3614 ----------------------------------------
3615 16 March 2011. Summary of changes for version 20110316:
3617 1) ACPI CA Core Subsystem:
3619 Fixed a problem caused by a _PRW method appearing at the namespace root
3621 during the setup of wake GPEs. A fault could occur if a _PRW directly
3624 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3626 Implemented support for "spurious" Global Lock interrupts. On some
3628 global lock interrupt can occur without the pending flag being set. Upon
3631 interrupt, we now ensure that a thread is actually waiting for the lock
3633 signaling GL availability. Rafael Wysocki, Bob Moore.
3635 Example Code and Data Size: These are the sizes for the OS-independent
3637 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3639 the code includes the debug output trace mechanism and has a much larger
3644 Previous Release (VC 9.0):
3645 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3646 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3647 Current Release (VC 9.0):
3648 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3649 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3651 2) iASL Compiler/Disassembler and Tools:
3653 Implemented full support for the "SLIC" ACPI table. Includes support in
3655 header files, disassembler, table compiler, and template generator. Bob
3659 AcpiXtract: Correctly handle embedded comments and messages from
3661 Apparently some or all versions of acpidump will occasionally emit a
3664 "Wrong checksum", etc., into the dump file. This was causing problems for
3665 AcpiXtract. ACPICA BZ 905.
3667 iASL: Fix the Linux makefile by removing an inadvertent double file
3671 AcpiExec: Update installation of operation region handlers. Install one
3673 for a user-defined address space. This is used by the ASL test suite
3676 ----------------------------------------
3677 11 February 2011. Summary of changes for version 20110211:
3679 1) ACPI CA Core Subsystem:
3681 Added a mechanism to defer _REG methods for some early-installed
3683 Most user handlers should be installed before call to
3684 AcpiEnableSubsystem.
3685 However, Event handlers and region handlers should be installed after
3686 AcpiInitializeObjects. Override handlers for the "default" regions should
3688 installed early, however. This change executes all _REG methods for the
3689 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3690 chicken/egg issues between them. ACPICA BZ 848.
3692 Implemented an optimization for GPE detection. This optimization will
3694 ignore GPE registers that contain no enabled GPEs -- there is no need to
3695 read the register since this information is available internally. This
3696 becomes more important on machines with a large GPE space. ACPICA
3698 884. Lin Ming. Suggestion from Joe Liu.
3700 Removed all use of the highly unreliable FADT revision field. The
3702 number in the FADT has been found to be completely unreliable and cannot
3704 trusted. Only the actual table length can be used to infer the version.
3706 change updates the ACPICA core and the disassembler so that both no
3708 even look at the FADT version and instead depend solely upon the FADT
3711 Fix an unresolved name issue for the no-debug and no-error-message source
3712 generation cases. The _AcpiModuleName was left undefined in these cases,
3714 it is actually needed as a parameter to some interfaces. Define
3715 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3717 Split several large files (makefiles and project files updated)
3718 utglobal.c -> utdecode.c
3719 dbcomds.c -> dbmethod.c dbnames.c
3720 dsopcode.c -> dsargs.c dscontrol.c
3721 dsload.c -> dsload2.c
3722 aslanalyze.c -> aslbtypes.c aslwalks.c
3724 Example Code and Data Size: These are the sizes for the OS-independent
3725 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3726 debug version of the code includes the debug output trace mechanism and
3728 a much larger code and data size.
3730 Previous Release (VC 9.0):
3731 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3732 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3733 Current Release (VC 9.0):
3734 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3735 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3737 2) iASL Compiler/Disassembler and Tools:
3739 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3740 These are useful C-style macros with the standard definitions. ACPICA
3743 iASL/DTC: Added support for integer expressions and labels. Support for
3745 expressions for all integer fields in all ACPI tables. Support for labels
3747 "generic" portions of tables such as UEFI. See the iASL reference manual.
3749 Debugger: Added a command to display the status of global handlers. The
3750 "handlers" command will display op region, fixed event, and miscellaneous
3751 global handlers. installation status -- and for op regions, whether
3753 or user-installed handler will be used.
3755 iASL: Warn if reserved method incorrectly returns a value. Many
3757 names are defined such that they do not return a value. If implemented as
3759 method, issue a warning if such a name explicitly returns a value. ACPICA
3762 iASL: Added detection of GPE method name conflicts. Detects a conflict
3764 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3766 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3768 iASL/DTC: Fixed a couple input scanner issues with comments and line
3769 numbers. Comment remover could get confused and miss a comment ending.
3771 a problem with line counter maintenance.
3773 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3775 no need to abort on simple errors within a field definition.
3777 Debugger: Simplified the output of the help command. All help output now
3779 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3781 ----------------------------------------
3782 12 January 2011. Summary of changes for version 20110112:
3784 1) ACPI CA Core Subsystem:
3786 Fixed a race condition between method execution and namespace walks that
3788 possibly cause a fault. The problem was apparently introduced in version
3789 20100528 as a result of a performance optimization that reduces the
3792 namespace walks upon method exit by using the delete_namespace_subtree
3793 function instead of the delete_namespace_by_owner function used
3795 Bug is a missing namespace lock in the delete_namespace_subtree function.
3796 dana.myers@oracle.com
3798 Fixed several issues and a possible fault with the automatic "serialized"
3799 method support. History: This support changes a method to "serialized" on
3801 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3802 possibility that it cannot handle reentrancy. This fix repairs a couple
3804 issues seen in the field, especially on machines with many cores:
3806 1) Delete method children only upon the exit of the last thread,
3807 so as to not delete objects out from under other running threads
3808 (and possibly causing a fault.)
3809 2) Set the "serialized" bit for the method only upon the exit of the
3810 Last thread, so as to not cause deadlock when running threads
3812 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3813 so that there is no longer any confusion between the two.
3815 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3817 Debugger: Now lock the namespace for duration of a namespace dump.
3819 issues if the namespace is changing dynamically underneath the debugger.
3820 Especially affects temporary namespace nodes, since the debugger displays
3823 Updated the ordering of include files. The ACPICA headers should appear
3824 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3826 any necessary compiler-specific defines, etc. Affects the ACPI-related
3830 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3832 to all module headers and signons, including the Linux header. This
3834 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3837 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3838 project files for VC++ 6.0 are now obsolete. New project files can be
3840 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3843 Example Code and Data Size: These are the sizes for the OS-independent
3844 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3845 debug version of the code includes the debug output trace mechanism and
3847 much larger code and data size.
3849 Previous Release (VC 6.0):
3850 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3851 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3852 Current Release (VC 9.0):
3853 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3854 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3856 2) iASL Compiler/Disassembler and Tools:
3858 iASL: Added generic data types to the Data Table compiler. Add "generic"
3860 types such as UINT32, String, Unicode, etc., to simplify the generation
3862 platform-defined tables such as UEFI. Lin Ming.
3864 iASL: Added listing support for the Data Table Compiler. Adds listing
3866 (-l) to display actual binary output for each line of input code.
3868 ----------------------------------------
3869 09 December 2010. Summary of changes for version 20101209:
3871 1) ACPI CA Core Subsystem:
3873 Completed the major overhaul of the GPE support code that was begun in
3875 2010. Major features include: removal of _PRW execution in ACPICA (host
3876 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3877 changes to existing interfaces, simplification of GPE handler operation,
3879 a handful of new interfaces:
3885 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3887 See the ACPICA Programmer Reference for full details and programming
3888 information. See the new section 4.4 "General Purpose Event (GPE)
3890 for a full overview, and section 8.7 "ACPI General Purpose Event
3892 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3894 Bob Moore, Rafael Wysocki.
3896 Implemented a new GPE feature for Windows compatibility, the "Implicit
3898 GPE Notify". This feature will automatically issue a Notify(2) on a
3900 when a Wake GPE is received if there is no corresponding GPE method or
3901 handler. ACPICA BZ 870.
3903 Fixed a problem with the Scope() operator during table parse and load
3905 During load phase (table load or method execution), the scope operator
3907 not enter the target into the namespace. Instead, it should open a new
3909 at the target location. Linux BZ 19462, ACPICA BZ 882.
3911 Example Code and Data Size: These are the sizes for the OS-independent
3912 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3913 debug version of the code includes the debug output trace mechanism and
3915 much larger code and data size.
3918 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3919 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3921 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3922 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3924 2) iASL Compiler/Disassembler and Tools:
3926 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3928 "bus-specific" per the ACPI specification, and therefore any characters
3930 acceptable. The only checks that can be performed are for a null string
3932 perhaps for a leading asterisk. ACPICA BZ 886.
3934 iASL: Fixed a problem where a syntax error that caused a premature EOF
3935 condition on the source file emitted a very confusing error message. The
3936 premature EOF is now detected correctly. ACPICA BZ 891.
3938 Disassembler: Decode the AccessSize within a Generic Address Structure
3940 access, word access, etc.) Note, this field does not allow arbitrary bit
3941 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3943 New: AcpiNames utility - Example namespace dump utility. Shows an example
3945 ACPICA configuration for a minimal namespace dump utility. Uses table and
3946 namespace managers, but no AML interpreter. Does not add any
3948 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3949 partition and configure ACPICA. ACPICA BZ 883.
3951 AML Debugger: Increased the debugger buffer size for method return
3953 Was 4K, increased to 16K. Also enhanced error messages for debugger
3955 execution, including the buffer overflow case.
3957 ----------------------------------------
3958 13 October 2010. Summary of changes for version 20101013:
3960 1) ACPI CA Core Subsystem:
3962 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3964 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3965 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3967 Changed the type of the predefined namespace object _TZ from ThermalZone
3969 Device. This was found to be confusing to the host software that
3971 the various thermal zones, since _TZ is not really a ThermalZone.
3974 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3977 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3978 string is "Windows 2006 SP2".
3980 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3982 code automatically repairs _HID-related strings, this type of code is no
3983 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3986 Example Code and Data Size: These are the sizes for the OS-independent
3987 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3988 debug version of the code includes the debug output trace mechanism and
3990 much larger code and data size.
3993 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3994 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3996 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3997 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3999 2) iASL Compiler/Disassembler and Tools:
4001 iASL: Implemented additional compile-time validation for _HID strings.
4003 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
4006 the string must be exactly seven or eight characters. For both _HID and
4008 strings, all characters must be alphanumeric. ACPICA BZ 874.
4010 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
4011 descriptors that are mostly or all zeros, with the expectation that they
4013 be filled in at runtime. iASL now allows this as long as there is a
4015 tag" (name) associated with the descriptor, which gives the ASL a handle
4016 needed to modify the descriptor. ACPICA BZ 873.
4018 Added single-thread support to the generic Unix application OSL.
4020 for iASL support, this change removes the use of semaphores in the
4022 threaded ACPICA tools/applications - increasing performance. The
4023 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
4024 option. ACPICA BZ 879.
4026 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
4028 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
4030 iASL: Moved all compiler messages to a new file, aslmessages.h.
4032 ----------------------------------------
4033 15 September 2010. Summary of changes for version 20100915:
4035 1) ACPI CA Core Subsystem:
4037 Removed the AcpiOsDerivePciId OSL interface. The various host
4039 of this function were not OS-dependent and are now obsolete and can be
4040 removed from all host OSLs. This function has been replaced by
4041 AcpiHwDerivePciId, which is now part of the ACPICA core code.
4042 AcpiHwDerivePciId has been implemented without recursion. Adds one new
4043 module, hwpci.c. ACPICA BZ 857.
4045 Implemented a dynamic repair for _HID and _CID strings. The following
4046 problems are now repaired at runtime: 1) Remove a leading asterisk in the
4047 string, and 2) the entire string is uppercased. Both repairs are in
4048 accordance with the ACPI specification and will simplify host driver
4052 The ACPI_THREAD_ID type is no longer configurable, internally it is now
4053 always UINT64. This simplifies the ACPICA code, especially any printf
4055 UINT64 is the only common data type for all thread_id types across all
4056 operating systems. It is now up to the host OSL to cast the native
4058 type to UINT64 before returning the value to ACPICA (via
4060 Lin Ming, Bob Moore.
4062 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
4064 keyword is not standard across compilers, and this type allows inline to
4066 configured on a per-compiler basis. Lin Ming.
4068 Made the system global AcpiGbl_SystemAwakeAndRunning publically
4070 Added an extern for this boolean in acpixf.h. Some hosts utilize this
4072 during suspend/restore operations. ACPICA BZ 869.
4074 All code that implements error/warning messages with the "ACPI:" prefix
4076 been moved to a new module, utxferror.c.
4078 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
4080 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
4082 Example Code and Data Size: These are the sizes for the OS-independent
4083 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4084 debug version of the code includes the debug output trace mechanism and
4086 much larger code and data size.
4089 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4090 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4092 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4093 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4095 2) iASL Compiler/Disassembler and Tools:
4097 iASL/Disassembler: Write ACPI errors to stderr instead of the output
4099 This keeps the output files free of random error messages that may
4101 from within the namespace/interpreter code. Used this opportunity to
4103 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
4104 866. Lin Ming, Bob Moore.
4106 Tools: update some printfs for ansi warnings on size_t. Handle width
4108 of size_t on 32-bit versus 64-bit generations. Lin Ming.
4110 ----------------------------------------
4111 06 August 2010. Summary of changes for version 20100806:
4113 1) ACPI CA Core Subsystem:
4115 Designed and implemented a new host interface to the _OSI support code.
4117 will allow the host to dynamically add or remove multiple _OSI strings,
4119 well as install an optional handler that is called for each _OSI
4121 Also added a new AML debugger command, 'osi' to display and modify the
4123 _OSI string table, and test support in the AcpiExec utility. See the
4125 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
4127 AcpiInstallInterface - Add an _OSI string.
4128 AcpiRemoveInterface - Delete an _OSI string.
4129 AcpiInstallInterfaceHandler - Install optional _OSI handler.
4131 AcpiOsValidateInterface - no longer used.
4133 source/components/utilities/utosi.c
4135 Re-introduced the support to enable multi-byte transfers for Embedded
4136 Controller (EC) operation regions. A reported problem was found to be a
4138 in the host OS, not in the multi-byte support. Previously, the maximum
4140 size passed to the EC operation region handler was a single byte. There
4142 often EC Fields larger than one byte that need to be transferred, and it
4144 useful for the EC driver to lock these as a single transaction. This
4146 enables single transfers larger than 8 bits. This effectively changes the
4147 access to the EC space from ByteAcc to AnyAcc, and will probably require
4148 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
4150 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
4152 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
4153 prototype in acpiosxf.h had the output value pointer as a (void *).
4154 It should be a (UINT64 *). This may affect some host OSL code.
4156 Fixed a couple problems with the recently modified Linux makefiles for
4158 and AcpiExec. These new makefiles place the generated object files in the
4159 local directory so that there can be no collisions between the files that
4161 shared between them that are compiled with different options.
4163 Example Code and Data Size: These are the sizes for the OS-independent
4164 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4165 debug version of the code includes the debug output trace mechanism and
4167 much larger code and data size.
4170 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4171 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4173 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4174 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4176 2) iASL Compiler/Disassembler and Tools:
4178 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
4180 namespace from and disassemble an entire group of AML files. Useful for
4181 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
4183 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
4185 iASL: Allow multiple invocations of -e option. This change allows
4187 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
4191 ----------------------------------------
4192 02 July 2010. Summary of changes for version 20100702:
4194 1) ACPI CA Core Subsystem:
4196 Implemented several updates to the recently added GPE reference count
4197 support. The model for "wake" GPEs is changing to give the host OS
4199 control of these GPEs. Eventually, the ACPICA core will not execute any
4201 methods, since the host already must execute them. Also, additional
4203 were made to help ensure that the reference counts are kept in proper
4204 synchronization with reality. Rafael J. Wysocki.
4206 1) Ensure that GPEs are not enabled twice during initialization.
4207 2) Ensure that GPE enable masks stay in sync with the reference count.
4208 3) Do not inadvertently enable GPEs when writing GPE registers.
4209 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
4210 interface. This interface will set or clear individual GPEs for wakeup.
4211 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
4213 are now used for "runtime" GPEs only.
4215 Changed the behavior of the GPE install/remove handler interfaces. The
4218 no longer disabled during this process, as it was found to cause problems
4220 some machines. Rafael J. Wysocki.
4222 Reverted a change introduced in version 20100528 to enable Embedded
4223 Controller multi-byte transfers. This change was found to cause problems
4225 Index Fields and possibly Bank Fields. It will be reintroduced when these
4226 problems have been resolved.
4228 Fixed a problem with references to Alias objects within Package Objects.
4230 reference to an Alias within the definition of a Package was not always
4231 resolved properly. Aliases to objects like Processors, Thermal zones,
4233 were resolved to the actual object instead of a reference to the object
4236 should be. Package objects are only allowed to contain integer, string,
4237 buffer, package, and reference objects. Redhat bugzilla 608648.
4239 Example Code and Data Size: These are the sizes for the OS-independent
4240 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4241 debug version of the code includes the debug output trace mechanism and
4243 much larger code and data size.
4246 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4247 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4249 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4250 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4252 2) iASL Compiler/Disassembler and Tools:
4254 iASL: Implemented a new compiler subsystem to allow definition and
4255 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
4257 are called "ACPI Data Tables", and the new compiler is the "Data Table
4258 Compiler". This compiler is intended to simplify the existing error-prone
4259 process of creating these tables for the BIOS, as well as allowing the
4260 disassembly, modification, recompilation, and override of existing ACPI
4262 tables. See the iASL User Guide for detailed information.
4264 iASL: Implemented a new Template Generator option in support of the new
4266 Table Compiler. This option will create examples of all known ACPI tables
4267 that can be used as the basis for table development. See the iASL
4268 documentation and the -T option.
4270 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
4273 Updated the Linux makefiles for iASL and AcpiExec to place the generated
4274 object files in the local directory so that there can be no collisions
4275 between the shared files between them that are generated with different
4278 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
4280 the #define __APPLE__ to enable this support.
4282 ----------------------------------------
4283 28 May 2010. Summary of changes for version 20100528:
4285 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
4286 available at www.acpi.info. This is primarily an errata release.
4288 1) ACPI CA Core Subsystem:
4290 Undefined ACPI tables: We are looking for the definitions for the
4292 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
4294 Implemented support to enable multi-byte transfers for Embedded
4296 (EC) operation regions. Previously, the maximum data size passed to the
4298 operation region handler was a single byte. There are often EC Fields
4300 than one byte that need to be transferred, and it is useful for the EC
4302 to lock these as a single transaction. This change enables single
4304 larger than 8 bits. This effectively changes the access to the EC space
4306 ByteAcc to AnyAcc, and will probably require changes to the host OS
4308 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
4310 transfers. Alexey Starikovskiy, Lin Ming
4312 Implemented a performance enhancement for namespace search and access.
4314 change enhances the performance of namespace searches and walks by adding
4316 backpointer to the parent in each namespace node. On large namespaces,
4318 change can improve overall ACPI performance by up to 9X. Adding a pointer
4320 each namespace node increases the overall size of the internal namespace
4322 about 5%, since each namespace entry usually consists of both a namespace
4323 node and an ACPI operand object. However, this is the first growth of the
4324 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
4326 Implemented a performance optimization that reduces the number of
4328 walks. On control method exit, only walk the namespace if the method is
4330 to have created namespace objects outside of its local scope. Previously,
4332 entire namespace was traversed on each control method exit. This change
4334 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
4337 Added support to truncate I/O addresses to 16 bits for Windows
4339 Some ASL code has been seen in the field that inadvertently has bits set
4340 above bit 15. This feature is optional and is enabled if the BIOS
4342 any Windows OSI strings. It can also be enabled by the host OS. Matthew
4345 Added support to limit the maximum time for the ASL Sleep() operator. To
4346 prevent accidental deep sleeps, limit the maximum time that Sleep() will
4347 actually sleep. Configurable, the default maximum is two seconds. ACPICA
4350 Added run-time validation support for the _WDG and_WED Microsoft
4352 methods. These objects are defined by "Windows Instrumentation", and are
4354 part of the ACPI spec. ACPICA BZ 860.
4356 Expanded all statistic counters used during namespace and device
4357 initialization from 16 to 32 bits in order to support very large
4360 Replaced all instances of %d in printf format specifiers with %u since
4362 all integers in ACPICA are unsigned.
4364 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
4368 Example Code and Data Size: These are the sizes for the OS-independent
4369 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4370 debug version of the code includes the debug output trace mechanism and
4372 much larger code and data size.
4375 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4376 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4378 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4379 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4381 2) iASL Compiler/Disassembler and Tools:
4383 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
4384 methods. These objects are defined by "Windows Instrumentation", and are
4386 part of the ACPI spec. ACPICA BZ 860.
4388 AcpiExec: added option to disable the memory tracking mechanism. The -dt
4389 option will disable the tracking mechanism, which improves performance
4392 AcpiExec: Restructured the command line options into -d (disable) and -e
4395 ----------------------------------------
4396 28 April 2010. Summary of changes for version 20100428:
4398 1) ACPI CA Core Subsystem:
4400 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
4401 including FADT-based and GPE Block Devices, execute any _PRW methods in
4403 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
4404 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
4405 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
4406 Devices. Provides compatibility with other ACPI implementations. Two new
4407 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
4410 Fixed a regression introduced in version 20100331 within the table
4412 where initial table loading could fail. This was introduced in the fix
4414 AcpiReallocateRootTable. Also, renamed some of fields in the table
4416 data structures to clarify their meaning and use.
4418 Fixed a possible allocation overrun during internal object copy in
4419 AcpiUtCopySimpleObject. The original code did not correctly handle the
4421 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
4424 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
4425 possible access beyond end-of-allocation. Also, now fully validate
4427 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
4429 Example Code and Data Size: These are the sizes for the OS-independent
4430 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4431 debug version of the code includes the debug output trace mechanism and
4433 much larger code and data size.
4436 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4437 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4439 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4440 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4442 2) iASL Compiler/Disassembler and Tools:
4444 iASL: Implemented Min/Max/Len/Gran validation for address resource
4445 descriptors. This change implements validation for the address fields
4447 are common to all address-type resource descriptors. These checks are
4448 implemented: Checks for valid Min/Max, length within the Min/Max window,
4449 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
4451 table 6-40 in the ACPI 4.0a specification. Also split the large
4453 and aslrestype2.c files into five new files. ACPICA BZ 840.
4455 iASL: Added support for the _Wxx predefined names. This support was
4457 and these names were not recognized by the compiler as valid predefined
4458 names. ACPICA BZ 851.
4460 iASL: Added an error for all predefined names that are defined to return
4462 value and thus must be implemented as Control Methods. These include all
4464 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
4465 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
4467 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
4469 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
4471 dynamically loaded via the Load() operator. Also cleaned up output for
4474 ta and -tc options. ACPICA BZ 853.
4476 Tests: Added a new file with examples of extended iASL error checking.
4477 Demonstrates the advanced error checking ability of the iASL compiler.
4478 Available at tests/misc/badcode.asl.
4480 ----------------------------------------
4481 31 March 2010. Summary of changes for version 20100331:
4483 1) ACPI CA Core Subsystem:
4485 Completed a major update for the GPE support in order to improve support
4487 shared GPEs and to simplify both host OS and ACPICA code. Added a
4489 count mechanism to support shared GPEs that require multiple device
4491 Several external interfaces have changed. One external interface has been
4492 removed. One new external interface was added. Most of the GPE external
4493 interfaces now use the GPE spinlock instead of the events mutex (and the
4494 Flags parameter for many GPE interfaces has been removed.) See the
4496 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
4498 Wysocki. ACPICA BZ 831.
4501 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
4507 Implemented write support for DataTable operation regions. These regions
4509 defined via the DataTableRegion() operator. Previously, only read support
4511 implemented. The ACPI specification allows DataTableRegions to be
4515 Implemented a new subsystem option to force a copy of the DSDT to local
4516 memory. Optionally copy the entire DSDT to local memory (instead of
4518 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
4520 the original DSDT, creating the need for this option. Default is FALSE,
4524 Implemented detection of a corrupted or replaced DSDT. This change adds
4525 support to detect a DSDT that has been corrupted and/or replaced from
4527 the OS (by firmware). This is typically catastrophic for the system, but
4529 been seen on some machines. Once this problem has been detected, the DSDT
4530 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
4532 Fixed two problems with AcpiReallocateRootTable during the root table
4534 When copying the root table to the new allocation, the length used was
4535 incorrect. The new size was used instead of the current table size,
4537 too much data was copied. Also, the count of available slots for ACPI
4539 was not set correctly. Alexey Starikovskiy, Bob Moore.
4541 Example Code and Data Size: These are the sizes for the OS-independent
4542 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4543 debug version of the code includes the debug output trace mechanism and
4545 much larger code and data size.
4548 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4549 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4551 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4552 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4554 2) iASL Compiler/Disassembler and Tools:
4556 iASL: Implement limited typechecking for values returned from predefined
4557 control methods. The type of any returned static (unnamed) object is now
4558 validated. For example, Return(1). ACPICA BZ 786.
4560 iASL: Fixed a predefined name object verification regression. Fixes a
4562 introduced in version 20100304. An error is incorrectly generated if a
4563 predefined name is declared as a static named object with a value defined
4564 using the keywords "Zero", "One", or "Ones". Lin Ming.
4566 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
4568 reducing the requested registry access rights. ACPICA BZ 842.
4570 Disassembler: fixed a possible fault when generating External()
4572 Introduced in commit ae7d6fd: Properly handle externals with parent-
4574 (carat). Fixes a string length allocation calculation. Lin Ming.
4576 ----------------------------------------
4577 04 March 2010. Summary of changes for version 20100304:
4579 1) ACPI CA Core Subsystem:
4581 Fixed a possible problem with the AML Mutex handling function
4582 AcpiExReleaseMutex where the function could fault under the very rare
4583 condition when the interpreter has blocked, the interpreter lock is
4585 the interpreter is then reentered via the same thread, and attempts to
4586 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
4590 Implemented additional configuration support for the AML "Debug Object".
4591 Output from the debug object can now be enabled via a global variable,
4592 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
4594 This debug output is now available in the release version of ACPICA
4596 of just the debug version. Also, the entire debug output module can now
4598 configured out of the ACPICA build if desired. One new file added,
4599 executer/exdebug.c. Lin Ming, Bob Moore.
4601 Added header support for the ACPI MCHI table (Management Controller Host
4602 Interface Table). This table was added in ACPI 4.0, but the defining
4604 has only recently become available.
4606 Standardized output of integer values for ACPICA warnings/errors. Always
4608 0x prefix for hex output, always use %u for unsigned integer decimal
4610 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
4612 invocations.) These invocations were converted from the original
4613 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
4615 Example Code and Data Size: These are the sizes for the OS-independent
4616 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4617 debug version of the code includes the debug output trace mechanism and
4619 much larger code and data size.
4622 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4623 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4625 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4626 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4628 2) iASL Compiler/Disassembler and Tools:
4630 iASL: Implemented typechecking support for static (non-control method)
4631 predefined named objects that are declared with the Name() operator. For
4632 example, the type of this object is now validated to be of type Integer:
4633 Name(_BBN, 1). This change migrates the compiler to using the core
4635 name table instead of maintaining a local version. Added a new file,
4636 aslpredef.c. ACPICA BZ 832.
4638 Disassembler: Added support for the ACPI 4.0 MCHI table.
4640 ----------------------------------------
4641 21 January 2010. Summary of changes for version 20100121:
4643 1) ACPI CA Core Subsystem:
4645 Added the 2010 copyright to all module headers and signons. This affects
4646 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4647 tools/utilities, and the test suites.
4649 Implemented a change to the AcpiGetDevices interface to eliminate
4651 invocations of the _STA method. In the case where a specific _HID is
4652 requested, do not run _STA until a _HID match is found. This eliminates
4653 potentially dozens of _STA calls during a search for a particular
4655 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4657 Implemented an additional repair for predefined method return values.
4659 to repair unexpected NULL elements within returned Package objects.
4662 Integer of value zero, a NULL String, or a zero-length Buffer as
4664 ACPICA BZ 818. Lin Ming, Bob Moore.
4666 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4668 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4670 64-bit AML integers). It is now obsolete and this change removes it from
4672 ACPICA code base, replaced by UINT64. The original typedef has been
4674 for now for compatibility with existing device driver code. ACPICA BZ
4677 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4679 the parse tree object.
4681 Added additional warning options for the gcc-4 generation. Updated the
4683 accordingly. This includes some code restructuring to eliminate
4685 code, elimination of some gotos, elimination of unused return values,
4687 additional casting, and removal of redundant declarations.
4689 Example Code and Data Size: These are the sizes for the OS-independent
4690 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4691 debug version of the code includes the debug output trace mechanism and
4693 much larger code and data size.
4696 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4697 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4699 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4700 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4702 2) iASL Compiler/Disassembler and Tools:
4704 No functional changes for this release.
4706 ----------------------------------------
4707 14 December 2009. Summary of changes for version 20091214:
4709 1) ACPI CA Core Subsystem:
4711 Enhanced automatic data type conversions for predefined name repairs.
4713 change expands the automatic repairs/conversions for predefined name
4715 values to make Integers, Strings, and Buffers fully interchangeable.
4718 Buffer can be converted to a Package of Integers if necessary. The
4720 module was completely restructured. Lin Ming, Bob Moore.
4722 Implemented automatic removal of null package elements during predefined
4724 repairs. This change will automatically remove embedded and trailing NULL
4725 package elements from returned package objects that are defined to
4728 variable number of sub-packages. The driver is then presented with a
4730 with no null elements to deal with. ACPICA BZ 819.
4732 Implemented a repair for the predefined _FDE and _GTM names. The expected
4733 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4735 possible problems (both seen in the field), where a package of integers
4737 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4740 Implemented additional module-level code support. This change will
4742 execute module-level code that is not at the root of the namespace (under
4744 Device object, etc.). Now executes the code within the current scope
4746 of the root. ACPICA BZ 762. Lin Ming.
4748 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4750 problem where mutex errors can occur when running a _REG method that is
4752 the same scope as a method-defined operation region or an operation
4754 under a module-level IF block. This type of code is rare, so the problem
4756 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4758 Fixed a possible memory leak during module-level code execution. An
4760 could be leaked for each block of executed module-level code if the
4761 interpreter slack mode is enabled This change deletes any implicitly
4763 object from the module-level code block. Lin Ming.
4765 Removed messages for successful predefined repair(s). The repair
4767 was considered too wordy. Now, messages are only unconditionally emitted
4769 the return object cannot be repaired. Existing messages for successful
4770 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4773 Example Code and Data Size: These are the sizes for the OS-independent
4774 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4775 debug version of the code includes the debug output trace mechanism and
4777 much larger code and data size.
4780 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4781 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4783 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4784 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4786 2) iASL Compiler/Disassembler and Tools:
4788 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4790 were no longer automatically removed at the termination of the compile.
4792 acpiexec: Implemented the -f option to specify default region fill value.
4793 This option specifies the value used to initialize buffers that simulate
4794 operation regions. Default value is zero. Useful for debugging problems
4796 depend on a specific initial value for a region or field.
4798 ----------------------------------------
4799 12 November 2009. Summary of changes for version 20091112:
4801 1) ACPI CA Core Subsystem:
4803 Implemented a post-order callback to AcpiWalkNamespace. The existing
4804 interface only has a pre-order callback. This change adds an additional
4805 parameter for a post-order callback which will be more useful for bus
4807 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4809 Modified the behavior of the operation region memory mapping cache for
4810 SystemMemory. Ensure that the memory mappings created for operation
4812 do not cross 4K page boundaries. Crossing a page boundary while mapping
4813 regions can cause kernel warnings on some hosts if the pages have
4815 attributes. Such regions are probably BIOS bugs, and this is the
4817 Linux BZ 14445. Lin Ming.
4819 Implemented an automatic repair for predefined methods that must return
4820 sorted lists. This change will repair (by sorting) packages returned by
4822 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4824 and do not contain NULL package elements. Adds one new file,
4825 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4827 Fixed a possible fault during predefined name validation if a return
4829 object contains NULL elements. Also adds a warning if a NULL element is
4830 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4832 include repair or removal of all such NULL elements where possible.
4834 Implemented additional module-level executable AML code support. This
4836 will execute module-level code that is not at the root of the namespace
4837 (under a Device object, etc.) at table load time. Module-level executable
4839 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4841 Implemented a new internal function to create Integer objects. This
4843 simplifies miscellaneous object creation code. ACPICA BZ 823.
4845 Reduced the severity of predefined repair messages, Warning to Info.
4847 the object was successfully repaired, a warning is too severe. Reduced to
4849 info message for now. These messages may eventually be changed to debug-
4853 Example Code and Data Size: These are the sizes for the OS-independent
4854 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4855 debug version of the code includes the debug output trace mechanism and
4857 much larger code and data size.
4860 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4861 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4863 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4864 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4866 2) iASL Compiler/Disassembler and Tools:
4868 iASL: Implemented Switch() with While(1) so that Break works correctly.
4870 change correctly implements the Switch operator with a surrounding
4872 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4874 iASL: Added a message if a package initializer list is shorter than
4876 length. Adds a new remark for a Package() declaration if an initializer
4878 exists, but is shorter than the declared length of the package. Although
4879 technically legal, this is probably a coding error and it is seen in the
4880 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4882 iASL: Fixed a problem where the compiler could fault after the maximum
4884 of errors was reached (200).
4886 acpixtract: Fixed a possible warning for pointer cast if the compiler
4888 level set very high.
4890 ----------------------------------------
4891 13 October 2009. Summary of changes for version 20091013:
4893 1) ACPI CA Core Subsystem:
4895 Fixed a problem where an Operation Region _REG method could be executed
4897 than once. If a custom address space handler is installed by the host
4899 the "initialize operation regions" phase of the ACPICA initialization,
4901 _REG methods for that address space could be executed twice. This change
4902 fixes the problem. ACPICA BZ 427. Lin Ming.
4904 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4905 invocation of "Scope(\)" is executed (change scope to root), one internal
4906 operand object was leaked. Lin Ming.
4908 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4909 return value is defined as a Field object in the AML, and the field
4910 size is less than or equal to the default width of an integer (32 or
4912 can incorrectly return an Integer instead of a Buffer. ACPICA now
4913 automatically repairs this problem. ACPICA BZ 810.
4915 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4917 "OEM Information" field is often incorrectly returned as an Integer with
4918 value zero if the field is not supported by the platform. This is due to
4920 ambiguity in the ACPI specification. The field should always be a string.
4921 ACPICA now automatically repairs this problem by returning a NULL string
4922 within the returned Package. ACPICA BZ 807.
4924 Example Code and Data Size: These are the sizes for the OS-independent
4925 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4926 debug version of the code includes the debug output trace mechanism and
4928 much larger code and data size.
4931 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4932 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4934 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4935 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4937 2) iASL Compiler/Disassembler and Tools:
4939 Disassembler: Fixed a problem where references to external symbols that
4940 contained one or more parent-prefixes (carats) were not handled
4942 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4944 Disassembler: Restructured the code so that all functions that handle
4945 external symbols are in a single module. One new file is added,
4948 AML Debugger: Added a max count argument for the Batch command (which
4949 executes multiple predefined methods within the namespace.)
4951 iASL: Updated the compiler documentation (User Reference.) Available at
4952 http://www.acpica.org/documentation/. ACPICA BZ 750.
4954 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4957 ----------------------------------------
4958 03 September 2009. Summary of changes for version 20090903:
4960 1) ACPI CA Core Subsystem:
4962 For Windows Vista compatibility, added the automatic execution of an _INI
4963 method located at the namespace root (\_INI). This method is executed at
4964 table load time. This support is in addition to the automatic execution
4966 \_SB._INI. Lin Ming.
4968 Fixed a possible memory leak in the interpreter for AML package objects
4970 the package initializer list is longer than the defined size of the
4972 This apparently can only happen if the BIOS changes the package size on
4974 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4975 interpreter will truncate the package to the defined size (and issue an
4977 message), but previously could leave the extra objects undeleted if they
4979 pre-created during the argument processing (such is the case if the
4981 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4983 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4984 This has been reported in the field. Previously, ACPICA would zero out
4986 buffer/string. Now, the operation is treated as a noop. Provides Windows
4987 compatibility. ACPICA BZ 803. Lin Ming.
4989 Removed an extraneous error message for ASL constructs of the form
4990 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4992 are seen in many BIOSs and are once again treated as NOOPs and no error
4994 emitted when they are encountered. ACPICA BZ 785.
4996 Fixed an extraneous warning message if a _DSM reserved method returns a
4997 Package object. _DSM can return any type of object, so validation on the
4998 return type cannot be performed. ACPICA BZ 802.
5000 Example Code and Data Size: These are the sizes for the OS-independent
5001 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5002 debug version of the code includes the debug output trace mechanism and
5004 much larger code and data size.
5007 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5008 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5010 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5011 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5013 2) iASL Compiler/Disassembler and Tools:
5015 iASL: Fixed a problem with the use of the Alias operator and Resource
5016 Templates. The correct alias is now constructed and no error is emitted.
5019 iASL: Implemented the -I option to specify additional search directories
5021 include files. Allows multiple additional search paths for include files.
5022 Directories are searched in the order specified on the command line
5024 the local directory is searched.) ACPICA BZ 800.
5026 iASL: Fixed a problem where the full pathname for include files was not
5027 emitted for warnings/errors. This caused the IDE support to not work
5028 properly. ACPICA BZ 765.
5030 iASL: Implemented the -@ option to specify a Windows-style response file
5031 containing additional command line options. ACPICA BZ 801.
5033 AcpiExec: Added support to load multiple AML files simultaneously (such
5036 DSDT and multiple SSDTs). Also added support for wildcards within the AML
5037 pathname. These features allow all machine tables to be easily loaded and
5038 debugged together. ACPICA BZ 804.
5040 Disassembler: Added missing support for disassembly of HEST table Error
5044 ----------------------------------------
5045 30 July 2009. Summary of changes for version 20090730:
5047 The ACPI 4.0 implementation for ACPICA is complete with this release.
5049 1) ACPI CA Core Subsystem:
5051 ACPI 4.0: Added header file support for all new and changed ACPI tables.
5052 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
5054 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
5056 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
5058 have been some ACPI 4.0 changes to other existing tables. Split the large
5059 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
5061 ACPI 4.0: Implemented predefined name validation for all new names. There
5063 31 new names in ACPI 4.0. The predefined validation module was split into
5065 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
5067 Implemented support for so-called "module-level executable code". This is
5068 executable AML code that exists outside of any control method and is
5070 to be executed at table load time. Although illegal since ACPI 2.0, this
5072 of code still exists and is apparently still being created. Blocks of
5074 code are now detected and executed as intended. Currently, the code
5076 must exist under either an If, Else, or While construct; these are the
5077 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
5079 Implemented an automatic dynamic repair for predefined names that return
5080 nested Package objects. This applies to predefined names that are defined
5082 return a variable-length Package of sub-packages. If the number of sub-
5083 packages is one, BIOS code is occasionally seen that creates a simple
5085 package with no sub-packages. This code attempts to fix the problem by
5086 wrapping a new package object around the existing package. These methods
5088 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
5092 Fixed a regression introduced in 20090625 for the AcpiGetDevices
5094 The _HID/_CID matching was broken and no longer matched IDs correctly.
5098 Fixed a problem with AcpiReset where the reset would silently fail if the
5099 register was one of the protected I/O ports. AcpiReset now bypasses the
5101 validation mechanism. This may eventually be driven into the
5105 Fixed a regression related to the recent update of the AcpiRead/Write
5106 interfaces. A sleep/suspend could fail if the optional PM2 Control
5108 does not exist during an attempt to write the Bus Master Arbitration bit.
5109 (However, some hosts already delete the code that writes this bit, and
5111 code may in fact be obsolete at this date.) ACPICA BZ 799.
5113 Fixed a problem where AcpiTerminate could fault if inadvertently called
5115 in succession. ACPICA BZ 795.
5117 Example Code and Data Size: These are the sizes for the OS-independent
5118 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5119 debug version of the code includes the debug output trace mechanism and
5121 much larger code and data size.
5124 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5125 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5127 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5128 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5130 2) iASL Compiler/Disassembler and Tools:
5132 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
5133 changes to existing tables. ACPICA BZ 775.
5135 ----------------------------------------
5136 25 June 2009. Summary of changes for version 20090625:
5138 The ACPI 4.0 Specification was released on June 16 and is available at
5139 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
5140 continue for the next few releases.
5142 1) ACPI CA Core Subsystem:
5144 ACPI 4.0: Implemented interpreter support for the IPMI operation region
5145 address space. Includes support for bi-directional data buffers and an
5147 address space handler (to be installed by an IPMI device driver.) ACPICA
5151 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
5153 support in both the header files and the disassembler.
5155 Completed a major update for the AcpiGetObjectInfo external interface.
5157 - Support for variable, unlimited length HID, UID, and CID strings.
5158 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
5160 - Call the _SxW power methods on behalf of a device object.
5161 - Determine if a device is a PCI root bridge.
5162 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
5163 These changes will require an update to all callers of this interface.
5165 the updated ACPICA Programmer Reference for details. One new source file
5167 been added - utilities/utids.c. ACPICA BZ 368, 780.
5169 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
5170 transfers. The Value parameter has been extended from 32 bits to 64 bits
5172 order to support new ACPI 4.0 tables. These changes will require an
5175 all callers of these interfaces. See the ACPICA Programmer Reference for
5176 details. ACPICA BZ 768.
5178 Fixed several problems with AcpiAttachData. The handler was not invoked
5180 the host node was deleted. The data sub-object was not automatically
5182 when the host node was deleted. The interface to the handler had an
5184 parameter, this was removed. ACPICA BZ 778.
5186 Enhanced the function that dumps ACPI table headers. All non-printable
5187 characters in the string fields are now replaced with '?' (Signature,
5189 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
5190 these fields are occasionally seen in the field. ACPICA BZ 788.
5192 Fixed a problem with predefined method repair code where the code that
5193 attempts to repair/convert an object of incorrect type is only executed
5195 the first time the predefined method is called. The mechanism that
5197 warnings on subsequent calls was interfering with the repair mechanism.
5200 Fixed a possible memory leak in the predefined validation/repair code
5203 buffer is automatically converted to an expected string object.
5205 Removed obsolete 16-bit files from the distribution and from the current
5207 tree head. ACPICA BZ 776.
5209 Example Code and Data Size: These are the sizes for the OS-independent
5210 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5211 debug version of the code includes the debug output trace mechanism and
5213 much larger code and data size.
5216 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5217 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5219 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5220 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5222 2) iASL Compiler/Disassembler and Tools:
5224 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
5225 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
5227 ACPI 4.0: iASL - implemented compile-time validation support for all new
5228 predefined names and control methods (31 total). ACPICA BZ 769.
5230 ----------------------------------------
5231 21 May 2009. Summary of changes for version 20090521:
5233 1) ACPI CA Core Subsystem:
5235 Disabled the preservation of the SCI enable bit in the PM1 control
5237 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
5240 a "preserved" bit - "OSPM always preserves this bit position", section
5241 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
5242 because the bit needs to be explicitly set by the OS as a workaround. No
5243 machines fail if the bit is not preserved. Therefore, ACPICA no longer
5244 attempts to preserve this bit.
5246 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
5247 incorrectly formed _PRT package could cause a fault. Added validation to
5248 ensure that each package element is actually a sub-package.
5250 Implemented a new interface to install or override a single control
5252 AcpiInstallMethod. This interface is useful when debugging in order to
5254 an existing method or to install a missing method without having to
5256 the entire ACPI table. See the ACPICA Programmer Reference for use and
5257 examples. Lin Ming, Bob Moore.
5259 Fixed several reference count issues with the DdbHandle object that is
5260 created from a Load or LoadTable operator. Prevent premature deletion of
5262 object. Also, mark the object as invalid once the table has been
5264 This is needed because the handle itself may not be deleted after the
5266 unload, depending on whether it has been stored in a named object by the
5269 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
5270 mutexes of the same sync level are acquired but then not released in
5272 opposite order, the internally maintained Current Sync Level becomes
5274 and can cause subsequent execution errors. ACPICA BZ 471.
5276 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
5277 specification has been changed to make the SyncLevel for mutex objects
5279 useful. When releasing a mutex, the SyncLevel of the mutex must now be
5281 same as the current sync level. This makes more sense than the previous
5283 (SyncLevel less than or equal). This change updates the code to match the
5286 Fixed a problem with the local version of the AcpiOsPurgeCache function.
5288 (local) cache must be locked during all cache object deletions. Andrew
5291 Updated the Load operator to use operation region interfaces. This
5293 direct memory mapping with region access calls. Now, all region accesses
5295 through the installed region handler as they should.
5297 Simplified and optimized the NsGetNextNode function. Reduced parameter
5299 and reduced code for this frequently used function.
5301 Example Code and Data Size: These are the sizes for the OS-independent
5302 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5303 debug version of the code includes the debug output trace mechanism and
5305 much larger code and data size.
5308 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5309 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5311 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5312 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5314 2) iASL Compiler/Disassembler and Tools:
5316 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
5318 with sub-table disassembly and handling invalid sub-tables. Attempt
5320 after an invalid sub-table ID.
5322 ----------------------------------------
5323 22 April 2009. Summary of changes for version 20090422:
5325 1) ACPI CA Core Subsystem:
5327 Fixed a compatibility issue with the recently released I/O port
5329 mechanism. For windows compatibility, 1) On a port protection violation,
5330 simply ignore the request and do not return an exception (allow the
5332 method to continue execution.) 2) If only part of the request overlaps a
5333 protected port, read/write the individual ports that are not protected.
5337 Enhanced the execution of the ASL/AML BreakPoint operator so that it
5339 breaks into the AML debugger if the debugger is present. This matches the
5340 ACPI-defined behavior.
5342 Fixed several possible warnings related to the use of the configurable
5343 ACPI_THREAD_ID. This type can now be configured as either an integer or a
5344 pointer with no warnings. Also fixes several warnings in printf-like
5345 statements for the 64-bit build when the type is configured as a pointer.
5348 Fixed a number of possible warnings when compiling with gcc 4+ (depending
5350 warning options.) Examples include printf formats, aliasing, unused
5352 missing prototypes, missing switch default statements, use of non-ANSI
5353 library functions, use of non-ANSI constructs. See generate/unix/Makefile
5355 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
5357 Example Code and Data Size: These are the sizes for the OS-independent
5358 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5359 debug version of the code includes the debug output trace mechanism and
5361 much larger code and data size.
5364 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5365 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5367 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5368 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5370 2) iASL Compiler/Disassembler and Tools:
5372 iASL: Fixed a generation warning from Bison 2.3 and fixed several
5377 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
5379 correctly digest Windows/DOS formatted files (with CR/LF).
5381 iASL: Added a new option for "quiet mode" (-va) that produces only the
5382 compilation summary, not individual errors and warnings. Useful for large
5385 AcpiExec: Implemented a new option (-z) to enable a forced
5387 timeout that can be used to detect hang conditions during execution of
5389 code (includes both internal semaphores and AML-defined mutexes and
5392 Added new makefiles for the generation of acpica in a generic unix-like
5393 environment. These makefiles are intended to generate the acpica tools
5395 utilities from the original acpica git source tree structure.
5397 Test Suites: Updated and cleaned up the documentation files. Updated the
5398 copyrights to 2009, affecting all source files. Use the new version of
5400 with quiet mode. Increased the number of available semaphores in the
5402 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
5404 an alternate implementation of the semaphore timeout to allow aslts to
5405 execute fully on Cygwin.
5407 ----------------------------------------
5408 20 March 2009. Summary of changes for version 20090320:
5410 1) ACPI CA Core Subsystem:
5412 Fixed a possible race condition between AcpiWalkNamespace and dynamic
5414 unloads. Added a reader/writer locking mechanism to allow multiple
5416 namespace walks (readers), but block a dynamic table unload until it can
5418 exclusive write access to the namespace. This fixes a problem where a
5420 unload could (possibly catastrophically) delete the portion of the
5422 that is currently being examined by a walk. Adds a new file, utlock.c,
5424 implements the reader/writer lock mechanism. ACPICA BZ 749.
5426 Fixed a regression introduced in version 20090220 where a change to the
5428 handling could cause the ACPICA subsystem to access non-existent I/O
5431 Modified the handling of FADT register and table (FACS/DSDT) addresses.
5433 FADT can contain both 32-bit and 64-bit versions of these addresses.
5434 Previously, the 64-bit versions were favored, meaning that if both 32 and
5436 versions were valid, but not equal, the 64-bit version was used. This was
5437 found to cause some machines to fail. Now, in this case, the 32-bit
5439 is used instead. This now matches the Windows behavior.
5441 Implemented a new mechanism to protect certain I/O ports. Provides
5443 compatibility and protects the standard PC I/O ports from access via AML
5444 code. Adds a new file, hwvalid.c
5446 Fixed a possible extraneous warning message from the FADT support. The
5447 message warns of a 32/64 length mismatch between the legacy and GAS
5448 definitions for a register.
5450 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
5452 made obsolete by the port protection mechanism above. It was previously
5454 to validate the entire address range of an operation region, which could
5456 incorrect if the range included illegal ports, but fields within the
5457 operation region did not actually access those ports. Validation is now
5458 performed on a per-field basis instead of the entire region.
5460 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
5461 Ignored bits must be "preserved" according to the ACPI spec. Usually,
5463 means a read/modify/write when writing to the register. However, for
5465 registers, writing a one means clear the event. Writing a zero means
5467 the event (do not clear.) This behavior is clarified in the ACPI 4.0
5469 and the ACPICA code now simply always writes a zero to the ignored bit.
5471 Modified the handling of ignored bits for the PM1 A/B Control Registers.
5473 per the ACPI specification, for the control registers, preserve
5474 (read/modify/write) all bits that are defined as either reserved or
5477 Updated the handling of write-only bits in the PM1 A/B Control Registers.
5478 When reading the register, zero the write-only bits as per the ACPI spec.
5479 ACPICA BZ 443. Lin Ming.
5481 Removed "Linux" from the list of supported _OSI strings. Linux no longer
5482 wants to reply true to this request. The Windows strings are the only
5484 through the AML that are tested and known to work properly.
5487 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5488 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5490 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5491 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5493 2) iASL Compiler/Disassembler and Tools:
5495 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
5499 ----------------------------------------
5500 20 February 2009. Summary of changes for version 20090220:
5502 1) ACPI CA Core Subsystem:
5504 Optimized the ACPI register locking. Removed locking for reads from the
5506 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
5508 not required when reading the single-bit registers. The
5509 AcpiGetRegisterUnlocked function is no longer needed and has been
5511 This will improve performance for reads on these registers. ACPICA BZ
5514 Fixed the parameter validation for AcpiRead/Write. Now return
5515 AE_BAD_PARAMETER if the input register pointer is null, and
5518 the register has an address of zero. Previously, these cases simply
5520 AE_OK. For optional registers such as PM1B status/enable/control, the
5522 should check for a valid register address before calling. ACPICA BZ 748.
5524 Renamed the external ACPI bit register access functions. Renamed
5525 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
5526 functions. The new names are AcpiReadBitRegister and
5527 AcpiWriteBitRegister.
5528 Also, restructured the code for these functions by simplifying the code
5530 and condensing duplicate code to reduce code size.
5532 Added new functions to transparently handle the possibly split PM1 A/B
5533 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
5535 now handle the split registers for PM1 Status, Enable, and Control.
5540 Added a function to handle the PM1 control registers,
5541 AcpiHwWritePm1Control.
5542 This function writes both of the PM1 control registers (A/B). These
5544 are different than the PM1 A/B status and enable registers in that
5546 values can be written to the A/B registers. Most notably, the SLP_TYP
5548 can be different, as per the values returned from the _Sx predefined
5551 Removed an extra register write within AcpiHwClearAcpiStatus. This
5553 was writing an optional PM1B status register twice. The existing call to
5555 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
5557 register. ACPICA BZ 751.
5559 Split out the PM1 Status registers from the FADT. Added new globals for
5561 registers (A/B), similar to the way the PM1 Enable registers are handled.
5562 Instead of overloading the FADT Event Register blocks. This makes the
5564 clearer and less prone to error.
5566 Fixed the warning message for when the platform contains too many ACPI
5568 for the default size of the global root table data structure. The
5570 for the truncation value was incorrect.
5572 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
5573 obsolete macro, since it is now a simple reference to ->common.type.
5575 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
5577 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
5578 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
5579 simply SLEEP_TYPE. ACPICA BZ 754.
5581 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
5582 function is only needed on 64-bit host operating systems and is thus not
5583 included for 32-bit hosts.
5585 Debug output: print the input and result for invocations of the _OSI
5587 control method via the ACPI_LV_INFO debug level. Also, reduced some of
5589 verbosity of this debug level. Len Brown.
5591 Example Code and Data Size: These are the sizes for the OS-independent
5592 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5593 debug version of the code includes the debug output trace mechanism and
5595 much larger code and data size.
5598 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5599 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5601 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5602 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5604 2) iASL Compiler/Disassembler and Tools:
5606 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
5607 various legal performance profiles.
5609 ----------------------------------------
5610 23 January 2009. Summary of changes for version 20090123:
5612 1) ACPI CA Core Subsystem:
5614 Added the 2009 copyright to all module headers and signons. This affects
5615 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5616 the tools/utilities.
5618 Implemented a change to allow the host to override any ACPI table,
5620 dynamically loaded tables. Previously, only the DSDT could be replaced by
5622 host. With this change, the AcpiOsTableOverride interface is called for
5624 table found in the RSDT/XSDT during ACPICA initialization, and also
5626 a table is dynamically loaded via the AML Load operator.
5628 Updated FADT flag definitions, especially the Boot Architecture flags.
5630 Debugger: For the Find command, automatically pad the input ACPI name
5632 underscores if the name is shorter than 4 characters. This enables a
5634 with the actual namespace entry which is itself padded with underscores.
5636 Example Code and Data Size: These are the sizes for the OS-independent
5637 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5638 debug version of the code includes the debug output trace mechanism and
5640 much larger code and data size.
5643 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5644 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
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 2) iASL Compiler/Disassembler and Tools:
5651 Fix build error under Bison-2.4.
5653 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5655 flags. Now decode all flags, regardless of the FADT version. Flag output
5656 includes the FADT version which first defined each flag.
5658 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5660 DSDT). Windows only.
5662 ----------------------------------------
5663 04 December 2008. Summary of changes for version 20081204:
5665 1) ACPI CA Core Subsystem:
5667 The ACPICA Programmer Reference has been completely updated and revamped
5669 this release. This includes updates to the external interfaces, OSL
5670 interfaces, the overview sections, and the debugger reference.
5672 Several new ACPICA interfaces have been implemented and documented in the
5673 programmer reference:
5674 AcpiReset - Writes the reset value to the FADT-defined reset register.
5675 AcpiDisableAllGpes - Disable all available GPEs.
5676 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5677 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5678 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5679 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5680 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5682 Most of the public ACPI hardware-related interfaces have been moved to a
5684 file, components/hardware/hwxface.c
5686 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5687 register lengths within the FADT are now used, and the low level ACPI
5688 register access no longer hardcodes the ACPI register lengths. Given that
5689 there may be some risk in actually trusting the FADT register lengths, a
5691 time option was added to fall back to the default hardcoded lengths if
5693 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5694 option is set to true for now, and a warning is issued if a suspicious
5696 register length is overridden with the default value.
5698 Fixed a reference count issue in NsRepairObject. This problem was
5700 in version 20081031 as part of a fix to repair Buffer objects within
5703 Added semaphore support to the Linux/Unix application OS-services layer
5704 (OSL). ACPICA BZ 448. Lin Ming.
5706 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5708 be implemented in the OSL, or will binary semaphores be used instead.
5710 Example Code and Data Size: These are the sizes for the OS-independent
5711 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5712 debug version of the code includes the debug output trace mechanism and
5714 much larger code and data size.
5717 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5718 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5720 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5721 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5723 2) iASL Compiler/Disassembler and Tools:
5725 iASL: Completed the '-e' option to include additional ACPI tables in
5728 aid with disassembly and External statement generation. ACPICA BZ 742.
5732 iASL: Removed the "named object in while loop" error. The compiler cannot
5733 determine how many times a loop will execute. ACPICA BZ 730.
5735 Disassembler: Implemented support for FADT revision 2 (MS extension).
5739 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5742 ----------------------------------------
5743 31 October 2008. Summary of changes for version 20081031:
5745 1) ACPI CA Core Subsystem:
5747 Restructured the ACPICA header files into public/private. acpi.h now
5749 only the "public" acpica headers. All other acpica headers are "private"
5751 should not be included by acpica users. One new file, accommon.h is used
5753 include the commonly used private headers for acpica code generation.
5755 plans include moving all private headers to a new subdirectory.
5757 Implemented an automatic Buffer->String return value conversion for
5758 predefined ACPI methods. For these methods (such as _BIF), added
5760 conversion for return objects that are required to be a String, but a
5762 was found instead. This can happen when reading string battery data from
5764 operation region, because it used to be difficult to convert the data
5766 buffer to string from within the ASL. Ensures that the host OS is
5768 with a valid null-terminated string. Linux BZ 11822.
5770 Updated the FACS waking vector interfaces. Split
5771 AcpiSetFirmwareWakingVector
5772 into two: one for the 32-bit vector, another for the 64-bit vector. This
5774 required because the host OS must setup the wake much differently for
5776 vector (real vs. protected mode, etc.) and the interface itself should
5779 deciding which vector to use. Also, eliminated the
5780 GetFirmwareWakingVector
5781 interface, as it served no purpose (only the firmware reads the vector,
5783 only writes the vector.) ACPICA BZ 731.
5785 Implemented a mechanism to escape infinite AML While() loops. Added a
5787 counter to force exit from AML While loops if the count becomes too
5789 This can occur in poorly written AML when the hardware does not respond
5790 within a while loop and the loop does not implement a timeout. The
5792 loop count is configurable. A new exception code is returned when a loop
5794 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5796 Optimized the execution of AML While loops. Previously, a control state
5797 object was allocated and freed for each execution of the loop. The
5798 optimization is to simply reuse the control state for each iteration.
5800 speeds up the raw loop execution time by about 5%.
5802 Enhanced the implicit return mechanism. For Windows compatibility, return
5804 implicit integer of value zero for methods that contain no executable
5806 Such methods are seen in the field as stubs (presumably), and can cause
5807 drivers to fail if they expect a return value. Lin Ming.
5809 Allow multiple backslashes as root prefixes in namepaths. In a fully
5810 qualified namepath, allow multiple backslash prefixes. This can happen
5812 is seen in the field) because of the use of a double-backslash in strings
5813 (since backslash is the escape character) causing confusion. ACPICA BZ
5817 Emit a warning if two different FACS or DSDT tables are discovered in the
5818 FADT. Checks if there are two valid but different addresses for the FACS
5820 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5822 Consolidated the method argument count validation code. Merged the code
5824 validates control method argument counts into the predefined validation
5825 module. Eliminates possible multiple warnings for incorrect argument
5828 Implemented ACPICA example code. Includes code for ACPICA initialization,
5829 handler installation, and calling a control method. Available at
5830 source/tools/examples.
5832 Added a global pointer for FACS table to simplify internal FACS access.
5834 the global pointer instead of using AcpiGetTableByIndex for each FACS
5836 This simplifies the code for the Global Lock and the Firmware Waking
5839 Example Code and Data Size: These are the sizes for the OS-independent
5840 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5841 debug version of the code includes the debug output trace mechanism and
5843 much larger code and data size.
5846 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5847 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5849 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5850 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5852 2) iASL Compiler/Disassembler and Tools:
5854 iASL: Improved disassembly of external method calls. Added the -e option
5856 allow the inclusion of additional ACPI tables to help with the
5859 method invocations and the generation of external declarations during the
5860 disassembly. Certain external method invocations cannot be disassembled
5861 properly without the actual declaration of the method. Use the -e option
5863 include the table where the external method(s) are actually declared.
5865 useful for disassembling SSDTs that make method calls back to the master
5866 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5868 -e dsdt.aml ssdt1.aml
5870 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5871 problem where the use of an alias within a namepath would result in a not
5872 found error or cause the compiler to fault. Also now allows forward
5873 references from the Alias operator itself. ACPICA BZ 738.
5875 ----------------------------------------
5876 26 September 2008. Summary of changes for version 20080926:
5878 1) ACPI CA Core Subsystem:
5880 Designed and implemented a mechanism to validate predefined ACPI methods
5882 objects. This code validates the predefined ACPI objects (objects whose
5884 start with underscore) that appear in the namespace, at the time they are
5885 evaluated. The argument count and the type of the returned object are
5886 validated against the ACPI specification. The purpose of this validation
5888 to detect problems with the BIOS-implemented predefined ACPI objects
5890 the results are returned to the ACPI-related drivers. Future enhancements
5892 include actual repair of incorrect return objects where possible. Two new
5893 files are nspredef.c and acpredef.h.
5895 Fixed a fault in the AML parser if a memory allocation fails during the
5897 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5899 Fixed an issue with implicit return compatibility. This change improves
5901 implicit return mechanism to be more compatible with the MS interpreter.
5903 Ming, ACPICA BZ 349.
5905 Implemented support for zero-length buffer-to-string conversions. Allow
5907 length strings during interpreter buffer-to-string conversions. For
5909 during the ToDecimalString and ToHexString operators, as well as implicit
5910 conversions. Fiodor Suietov, ACPICA BZ 585.
5912 Fixed two possible memory leaks in the error exit paths of
5913 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5915 similar in that they use a stack of state objects in order to eliminate
5916 recursion. The stack must be fully unwound and deallocated if an error
5917 occurs. Lin Ming. ACPICA BZ 383.
5919 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5921 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5922 Moore ACPICA BZ 442.
5924 Removed the obsolete version number in module headers. Removed the
5925 "$Revision" number that appeared in each module header. This version
5927 was useful under SourceSafe and CVS, but has no meaning under git. It is
5929 only incorrect, it could also be misleading.
5931 Example Code and Data Size: These are the sizes for the OS-independent
5932 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5933 debug version of the code includes the debug output trace mechanism and
5935 much larger code and data size.
5938 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5939 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5941 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5942 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5944 ----------------------------------------
5945 29 August 2008. Summary of changes for version 20080829:
5947 1) ACPI CA Core Subsystem:
5949 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5950 Reference. Changes include the elimination of cheating on the Object
5952 for the DdbHandle subtype, addition of a reference class field to
5953 differentiate the various reference types (instead of an AML opcode), and
5955 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5957 Reduce an error to a warning for an incorrect method argument count.
5958 Previously aborted with an error if too few arguments were passed to a
5959 control method via the external ACPICA interface. Now issue a warning
5961 and continue. Handles the case where the method inadvertently declares
5963 many arguments, but does not actually use the extra ones. Applies mainly
5965 the predefined methods. Lin Ming. Linux BZ 11032.
5967 Disallow the evaluation of named object types with no intrinsic value.
5969 AE_TYPE for objects that have no value and therefore evaluation is
5971 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5973 these types were allowed, but an exception would be generated at some
5975 during the evaluation. Now, the error is generated up front.
5977 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5978 (nsnames.c). Fixes a leak in the error exit path.
5980 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5982 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5984 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5987 Removed obsolete and/or unused exception codes from the acexcep.h header.
5988 There is the possibility that certain device drivers may be affected if
5990 use any of these exceptions.
5992 The ACPICA documentation has been added to the public git source tree,
5994 acpica/documents. Included are the ACPICA programmer reference, the iASL
5995 compiler reference, and the changes.txt release logfile.
5997 Example Code and Data Size: These are the sizes for the OS-independent
5998 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5999 debug version of the code includes the debug output trace mechanism and
6001 much larger code and data size.
6004 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6005 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6007 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6008 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6010 2) iASL Compiler/Disassembler and Tools:
6012 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
6013 defines _SCP with 3 arguments. Previous versions defined it with only 1
6014 argument. iASL now allows both definitions.
6016 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
6018 length subtables when disassembling ACPI tables. Also fixed a couple of
6019 errors where a full 16-bit table type field was not extracted from the
6023 acpisrc: Improve comment counting mechanism for generating source code
6024 statistics. Count first and last lines of multi-line comments as
6026 not comment lines. Handle Linux legal header in addition to standard
6030 ----------------------------------------
6032 29 July 2008. Summary of changes for version 20080729:
6034 1) ACPI CA Core Subsystem:
6036 Fix a possible deadlock in the GPE dispatch. Remove call to
6037 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
6039 to acquire the GPE lock but can deadlock since the GPE lock is already
6041 at dispatch time. This code was introduced in version 20060831 as a
6043 to Linux BZ 6881 and has since been removed from Linux.
6045 Add a function to dereference returned reference objects. Examines the
6047 object from a call to AcpiEvaluateObject. Any Index or RefOf references
6049 automatically dereferenced in an attempt to return something useful
6051 reference types cannot be converted into an external ACPI_OBJECT.)
6053 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
6055 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
6056 subtables for the MADT and one new subtable for the SRAT. Includes
6057 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
6059 Specification, June 2008.
6061 Additional error checking for pathname utilities. Add error check after
6063 calls to AcpiNsGetPathnameLength. Add status return from
6064 AcpiNsBuildExternalPath and check after all calls. Add parameter
6066 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
6068 Return status from the global init function AcpiUtGlobalInitialize. This
6070 used by both the kernel subsystem and the utilities such as iASL
6072 The function could possibly fail when the caches are initialized. Yang
6075 Add a function to decode reference object types to strings. Created for
6076 improved error messages.
6078 Improve object conversion error messages. Better error messages during
6080 conversion from internal to the external ACPI_OBJECT. Used for external
6082 to AcpiEvaluateObject.
6084 Example Code and Data Size: These are the sizes for the OS-independent
6085 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6086 debug version of the code includes the debug output trace mechanism and
6088 much larger code and data size.
6091 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6092 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6094 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6095 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6097 2) iASL Compiler/Disassembler and Tools:
6099 Debugger: fix a possible hang when evaluating non-methods. Fixes a
6101 introduced in version 20080701. If the object being evaluated (via
6103 command) is not a method, the debugger can hang while trying to obtain
6105 existent parameters.
6107 iASL: relax error for using reserved "_T_x" identifiers. These names can
6108 appear in a disassembled ASL file if they were emitted by the original
6109 compiler. Instead of issuing an error or warning and forcing the user to
6110 manually change these names, issue a remark instead.
6112 iASL: error if named object created in while loop. Emit an error if any
6114 object is created within a While loop. If allowed, this code will
6117 run-time error on the second iteration of the loop when an attempt is
6120 create the same named object twice. ACPICA bugzilla 730.
6122 iASL: Support absolute pathnames for include files. Add support for
6124 pathnames within the Include operator. previously, only relative
6128 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
6130 The ACPI spec requires one interrupt minimum. BZ 423
6132 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
6133 Handles the case for the Interrupt Resource Descriptor where
6134 the ResourceSource argument is omitted but ResourceSourceIndex
6135 is present. Now leave room for the Index. BZ 426
6137 iASL: Prevent error message if CondRefOf target does not exist. Fixes
6139 where an error message is emitted if the target does not exist. BZ 516
6141 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
6142 (get ACPI tables on Windows). This was apparently broken in version
6145 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
6147 the EOF happens immediately after the last table in the input file. Print
6148 completion message. Previously, no message was displayed in this case.
6150 ----------------------------------------
6151 01 July 2008. Summary of changes for version 20080701:
6153 0) Git source tree / acpica.org
6155 Fixed a problem where a git-clone from http would not transfer the entire
6158 1) ACPI CA Core Subsystem:
6160 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
6161 enable bit. Now performs a read-change-write of the enable register
6163 of simply writing out the cached enable mask. This will prevent
6165 enabling of GPEs if a rogue GPE is received during initialization (before
6167 handlers are installed.)
6169 Implemented a copy for dynamically loaded tables. Previously, dynamically
6170 loaded tables were simply mapped - but on some machines this memory is
6171 corrupted after suspend. Now copy the table to a local buffer. For the
6172 OpRegion case, added checksum verify. Use the table length from the table
6173 header, not the region length. For the Buffer case, use the table length
6174 also. Dennis Noordsij, Bob Moore. BZ 10734
6176 Fixed a problem where the same ACPI table could not be dynamically loaded
6178 unloaded more than once. Without this change, a table cannot be loaded
6180 once it has been loaded/unloaded one time. The current mechanism does not
6181 unregister a table upon an unload. During a load, if the same table is
6183 this no longer returns an exception. BZ 722
6185 Fixed a problem where the wrong descriptor length was calculated for the
6186 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
6188 are calculated as 12 bytes long, but the actual length in the internal
6189 descriptor is 16 because of the round-up to 8 on the 64-bit build.
6191 by Linn Crosetto. BZ 728
6193 Fixed a possible memory leak in the Unload operator. The DdbHandle
6195 by Load() did not have its reference count decremented during unload,
6197 to a memory leak. Lin Ming. BZ 727
6199 Fixed a possible memory leak when deleting thermal/processor objects. Any
6200 associated notify handlers (and objects) were not being deleted. Fiodor
6203 Fixed the ordering of the ASCII names in the global mutex table to match
6205 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
6207 Vegard Nossum. BZ 726
6209 Enhanced the AcpiGetObjectInfo interface to return the number of required
6210 arguments if the object is a control method. Added this call to the
6212 so the proper number of default arguments are passed to a method. This
6213 prevents a warning when executing methods from AcpiExec.
6215 Added a check for an invalid handle in AcpiGetObjectInfo. Return
6216 AE_BAD_PARAMETER if input handle is invalid. BZ 474
6218 Fixed an extraneous warning from exconfig.c on the 64-bit build.
6220 Example Code and Data Size: These are the sizes for the OS-independent
6221 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6222 debug version of the code includes the debug output trace mechanism and
6224 much larger code and data size.
6227 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6228 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6230 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6231 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6233 2) iASL Compiler/Disassembler and Tools:
6235 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
6236 resource descriptor names.
6238 iASL: Detect invalid ASCII characters in input (windows version). Removed
6240 "-CF" flag from the flex compile, enables correct detection of non-ASCII
6241 characters in the input. BZ 441
6243 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
6245 "result of operation not used" warning when the DDB handle returned from
6246 LoadTable is not used. The warning is not needed. BZ 590
6248 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
6251 pass address of table to the AML. Added option to disable OpRegion
6253 to allow creation of an OpRegion with a real address that was passed to
6255 All of this allows testing of the Load and Unload operators from
6258 Debugger: update tables command for unloaded tables. Handle unloaded
6260 and use the standard table header output routine.
6262 ----------------------------------------
6263 09 June 2008. Summary of changes for version 20080609:
6265 1) ACPI CA Core Subsystem:
6267 Implemented a workaround for reversed _PRT entries. A significant number
6269 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
6270 change dynamically detects and repairs this problem. Provides
6272 with MS ACPI. BZ 6859
6274 Simplified the internal ACPI hardware interfaces to eliminate the locking
6275 flag parameter from Register Read/Write. Added a new external interface,
6276 AcpiGetRegisterUnlocked.
6278 Fixed a problem where the invocation of a GPE control method could hang.
6280 was a regression introduced in 20080514. The new method argument count
6281 validation mechanism can enter an infinite loop when a GPE method is
6282 dispatched. Problem fixed by removing the obsolete code that passed GPE
6284 information to the notify handler via the control method parameter
6287 Fixed a problem where the _SST execution status was incorrectly returned
6289 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
6291 20080514. _SST is optional and a NOT_FOUND exception should never be
6294 Fixed a problem where a deleted object could be accessed from within the
6296 parser. This was a regression introduced in version 20080123 as a fix for
6298 Unload operator. Lin Ming. BZ 10669
6300 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
6302 and eliminated the use of a negative index in a loop. Operands are now
6303 displayed in the correct order, not backwards. This also fixes a
6305 introduced in 20080514 on 64-bit systems where the elimination of
6306 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
6309 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
6311 path did not delete a locally allocated structure.
6313 Updated definitions for the DMAR and SRAT tables to synchronize with the
6314 current specifications. Includes disassembler support.
6316 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
6317 loop termination value was used. Loop terminated on iteration early,
6319 one mutex. Linn Crosetto
6321 Example Code and Data Size: These are the sizes for the OS-independent
6322 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6323 debug version of the code includes the debug output trace mechanism and
6325 much larger code and data size.
6328 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6329 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6331 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6332 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6334 2) iASL Compiler/Disassembler and Tools:
6336 Disassembler: Implemented support for EisaId() within _CID objects. Now
6337 disassemble integer _CID objects back to EisaId invocations, including
6338 multiple integers within _CID packages. Includes single-step support for
6341 Disassembler: Added support for DMAR and SRAT table definition changes.
6343 ----------------------------------------
6344 14 May 2008. Summary of changes for version 20080514:
6346 1) ACPI CA Core Subsystem:
6348 Fixed a problem where GPEs were enabled too early during the ACPICA
6349 initialization. This could lead to "handler not installed" errors on some
6350 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
6352 ensures that all operation regions and devices throughout the namespace
6354 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
6356 Implemented a change to the enter sleep code. Moved execution of the _GTS
6357 method to just before setting sleep enable bit. The execution was moved
6359 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
6360 immediately before the SLP_EN bit is set, as per the ACPI specification.
6363 Implemented a fix to disable unknown GPEs (2nd version). Now always
6365 the GPE, even if ACPICA thinks that that it is already disabled. It is
6366 possible that the AML or some other code has enabled the GPE unbeknownst
6370 Fixed a problem with the Field operator where zero-length fields would
6372 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
6374 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
6376 Implemented a fix for the Load operator, now load the table at the
6378 root. This reverts a change introduced in version 20071019. The table is
6380 loaded at the namespace root even though this goes against the ACPI
6381 specification. This provides compatibility with other ACPI
6383 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
6386 Fixed a problem where ACPICA would not Load() tables with unusual
6388 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
6389 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
6390 Therefore, signature validation is worthless. Apparently MS ACPI accepts
6392 signatures, ACPICA must be compatible. BZ 10454.
6394 Fixed a possible negative array index in AcpiUtValidateException. Added
6396 fields to the exception string arrays to eliminate a -1 subtraction on
6400 Updated the debug tracking macros to reduce overall code and data size.
6401 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
6402 instead of pointers to static strings. Jan Beulich and Bob Moore.
6404 Implemented argument count checking in control method invocation via
6405 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
6407 many. This applies only to extern programmatic control method execution,
6409 method-to-method calls within the AML. Lin Ming.
6411 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
6413 longer needed, especially with the removal of 16-bit support. It was
6415 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
6418 32/64-bit platforms is required.
6420 Added the C const qualifier for appropriate string constants -- mostly
6421 MODULE_NAME and printf format strings. Jan Beulich.
6423 Example Code and Data Size: These are the sizes for the OS-independent
6424 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6425 debug version of the code includes the debug output trace mechanism and
6427 much larger code and data size.
6430 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6431 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6433 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6434 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6436 2) iASL Compiler/Disassembler and Tools:
6438 Implemented ACPI table revision ID validation in the disassembler. Zero
6440 always invalid. For DSDTs, the ID controls the interpreter integer width.
6442 means 32-bit and this is unusual. 2 or greater is 64-bit.
6444 ----------------------------------------
6445 21 March 2008. Summary of changes for version 20080321:
6447 1) ACPI CA Core Subsystem:
6449 Implemented an additional change to the GPE support in order to suppress
6450 spurious or stray GPEs. The AcpiEvDisableGpe function will now
6452 disable incoming GPEs that are neither enabled nor disabled -- meaning
6454 the GPE is unknown to the system. This should prevent future interrupt
6456 from that GPE. BZ 6217 (Zhang Rui)
6458 Fixed a problem where NULL package elements were not returned to the
6459 AcpiEvaluateObject interface correctly. The element was simply ignored
6460 instead of returning a NULL ACPI_OBJECT package element, potentially
6462 a buffer overflow and/or confusing the caller who expected a fixed number
6464 elements. BZ 10132 (Lin Ming, Bob Moore)
6466 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
6468 Qword), Field, BankField, and IndexField operators when invoked from
6470 an executing control method. In this case, these operators created
6472 nodes that were incorrectly left marked as permanent nodes instead of
6473 temporary nodes. This could cause a problem if there is race condition
6474 between an exiting control method and a running namespace walk. (Reported
6478 Fixed a problem where the CreateField and CreateXXXField operators would
6479 incorrectly allow duplicate names (the name of the field) with no
6483 Implemented several changes for Notify handling. Added support for new
6485 values (ACPI 2.0+) and improved the Notify debug output. Notify on
6486 PowerResource objects is no longer allowed, as per the ACPI
6488 (Bob Moore, Zhang Rui)
6490 All Reference Objects returned via the AcpiEvaluateObject interface are
6492 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
6494 NULL objects - either NULL package elements or unresolved named
6497 Fixed a problem where an extraneous debug message was produced for
6499 objects (when debugging enabled). The message "Package List length larger
6500 than NumElements count" is now produced in the correct case, and is now
6502 error message rather than a debug message. Added a debug message for the
6503 opposite case, where NumElements is larger than the Package List (the
6505 will be padded out with NULL elements as per the ACPI spec.)
6507 Implemented several improvements for the output of the ASL "Debug" object
6509 clarify and keep all data for a given object on one output line.
6511 Fixed two size calculation issues with the variable-length Start
6513 resource descriptor.
6515 Example Code and Data Size: These are the sizes for the OS-independent
6516 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6517 debug version of the code includes the debug output trace mechanism and
6519 a much larger code and data size.
6522 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6523 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6525 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6526 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6528 2) iASL Compiler/Disassembler and Tools:
6530 Fixed a problem with the use of the Switch operator where execution of
6532 containing method by multiple concurrent threads could cause an
6533 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
6534 actual Switch opcode, it must be simulated with local named temporary
6535 variables and if/else pairs. The solution chosen was to mark any method
6537 uses Switch as Serialized, thus preventing multiple thread entries. BZ
6540 ----------------------------------------
6541 13 February 2008. Summary of changes for version 20080213:
6543 1) ACPI CA Core Subsystem:
6545 Implemented another MS compatibility design change for GPE/Notify
6547 GPEs are now cleared/enabled asynchronously to allow all pending notifies
6549 complete first. It is expected that the OSL will queue the enable request
6550 behind all pending notify requests (may require changes to the local host
6552 in AcpiOsExecute). Alexey Starikovskiy.
6554 Fixed a problem where buffer and package objects passed as arguments to a
6555 control method via the external AcpiEvaluateObject interface could cause
6557 AE_AML_INTERNAL exception depending on the order and type of operators
6558 executed by the target control method.
6560 Fixed a problem where resource descriptor size optimization could cause a
6561 problem when a _CRS resource template is passed to a _SRS method. The
6563 resource template must use the same descriptors (with the same size) as
6564 returned from _CRS. This change affects the following resource
6566 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
6569 Fixed a problem where a CopyObject to RegionField, BankField, and
6571 objects did not perform an implicit conversion as it should. These types
6573 retain their initial type permanently as per the ACPI specification.
6575 a CopyObject to all other object types should not perform an implicit
6576 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
6578 Fixed a problem with the AcpiGetDevices interface where the mechanism to
6579 match device CIDs did not examine the entire list of available CIDs, but
6580 instead aborted on the first non-matching CID. Andrew Patterson.
6582 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
6584 inadvertently changed to return a 16-bit value instead of a 32-bit value,
6585 truncating the upper dword of a 64-bit value. This macro is only used to
6586 display debug output, so no incorrect calculations were made. Also,
6587 reimplemented the macro so that a 64-bit shift is not performed by
6588 inefficient compilers.
6590 Added missing va_end statements that should correspond with each va_start
6593 Example Code and Data Size: These are the sizes for the OS-independent
6594 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6595 debug version of the code includes the debug output trace mechanism and
6597 a much larger code and data size.
6600 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6601 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6603 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6604 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6606 2) iASL Compiler/Disassembler and Tools:
6608 Implemented full disassembler support for the following new ACPI tables:
6609 BERT, EINJ, and ERST. Implemented partial disassembler support for the
6610 complicated HEST table. These tables support the Windows Hardware Error
6611 Architecture (WHEA).
6613 ----------------------------------------
6614 23 January 2008. Summary of changes for version 20080123:
6616 1) ACPI CA Core Subsystem:
6618 Added the 2008 copyright to all module headers and signons. This affects
6619 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6620 the tools/utilities.
6622 Fixed a problem with the SizeOf operator when used with Package and
6624 objects. These objects have deferred execution for some arguments, and
6626 execution is now completed before the SizeOf is executed. This problem
6628 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6632 Implemented an enhancement to the interpreter "slack mode". In the
6635 an explicit return or an implicitly returned object from the last
6637 opcode, a control method will now implicitly return an integer of value 0
6639 Microsoft compatibility. (Lin Ming) BZ 392
6641 Fixed a problem with the Load operator where an exception was not
6644 the case where the table is already loaded. (Lin Ming) BZ 463
6646 Implemented support for the use of DDBHandles as an Indexed Reference, as
6648 the ACPI spec. (Lin Ming) BZ 486
6650 Implemented support for UserTerm (Method invocation) for the Unload
6652 as per the ACPI spec. (Lin Ming) BZ 580
6654 Fixed a problem with the LoadTable operator where the OemId and
6656 input strings could cause unexpected failures if they were shorter than
6658 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6660 Implemented support for UserTerm (Method invocation) for the Unload
6662 as per the ACPI spec. (Lin Ming) BZ 580
6664 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6666 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6668 Example Code and Data Size: These are the sizes for the OS-independent
6669 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6670 debug version of the code includes the debug output trace mechanism and
6672 a much larger code and data size.
6675 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6676 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6678 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6679 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6681 2) iASL Compiler/Disassembler and Tools:
6683 Implemented support in the disassembler for checksum validation on
6685 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6687 header dump at the start of the disassembly.
6689 Implemented additional debugging information in the namespace listing
6691 created during compilation. In addition to the namespace hierarchy, the
6693 pathname to each namespace object is displayed.
6695 Fixed a problem with the disassembler where invalid ACPI tables could
6697 faults or infinite loops.
6699 Fixed an unexpected parse error when using the optional "parameter types"
6700 list in a control method declaration. (Lin Ming) BZ 397
6702 Fixed a problem where two External declarations with the same name did
6704 cause an error (Lin Ming) BZ 509
6706 Implemented support for full TermArgs (adding Argx, Localx and method
6707 invocation) for the ParameterData parameter to the LoadTable operator.
6711 ----------------------------------------
6712 19 December 2007. Summary of changes for version 20071219:
6714 1) ACPI CA Core Subsystem:
6716 Implemented full support for deferred execution for the TermArg string
6717 arguments for DataTableRegion. This enables forward references and full
6718 operand resolution for the three string arguments. Similar to
6720 deferred argument execution.) Lin Ming. BZ 430
6722 Implemented full argument resolution support for the BankValue argument
6724 BankField. Previously, only constants were supported, now any TermArg may
6726 used. Lin Ming BZ 387, 393
6728 Fixed a problem with AcpiGetDevices where the search of a branch of the
6729 device tree could be terminated prematurely. In accordance with the ACPI
6730 specification, the search down the current branch is terminated if a
6732 is both not present and not functional (instead of just not present.)
6736 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6738 the underlying AML code changed the GPE enable registers. Now, any
6740 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6742 instead of simply ignored. Rui Zhang.
6744 Fixed a problem with Index Fields where the Index register was
6746 limited to a maximum of 32 bits. Now any size may be used.
6748 Fixed a couple memory leaks associated with "implicit return" objects
6750 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6752 Example Code and Data Size: These are the sizes for the OS-independent
6753 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6754 debug version of the code includes the debug output trace mechanism and
6756 a much larger code and data size.
6759 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6760 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6762 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6763 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6765 ----------------------------------------
6766 14 November 2007. Summary of changes for version 20071114:
6768 1) ACPI CA Core Subsystem:
6770 Implemented event counters for each of the Fixed Events, the ACPI SCI
6771 (interrupt) itself, and control methods executed. Named
6772 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6774 should be useful for debugging and statistics.
6776 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6777 contents of the various event counters. Returns the current values for
6778 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6779 AcpiMethodCount. The interface can be expanded in the future if new
6781 are added. Device drivers should use this interface rather than access
6785 Fixed a problem with the FromBCD and ToBCD operators. With some
6787 the ShortDivide function worked incorrectly, causing problems with the
6789 functions with large input values. A truncation from 64-bit to 32-bit
6790 inadvertently occurred. Internal BZ 435. Lin Ming
6792 Fixed a problem with Index references passed as method arguments.
6794 passed as arguments to control methods were dereferenced immediately
6796 control was passed to the called method). The references are now
6798 passed directly to the called method. BZ 5389. Lin Ming
6800 Fixed a problem with CopyObject used in conjunction with the Index
6802 The reference was incorrectly dereferenced before the copy. The reference
6804 now correctly copied. BZ 5391. Lin Ming
6806 Fixed a problem with Control Method references within Package objects.
6808 references are now correctly generated. This completes the package
6809 construction overhaul that began in version 20071019.
6811 Example Code and Data Size: These are the sizes for the OS-independent
6812 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6813 debug version of the code includes the debug output trace mechanism and
6815 a much larger code and data size.
6818 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6819 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6821 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6822 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6825 2) iASL Compiler/Disassembler and Tools:
6827 The AcpiExec utility now installs handlers for all of the predefined
6828 Operation Region types. New types supported are: PCI_Config, CMOS, and
6831 Fixed a problem with the 64-bit version of AcpiExec where the extended
6833 bit) address fields for the DSDT and FACS within the FADT were not being
6834 used, causing truncation of the upper 32-bits of these addresses. Lin
6838 ----------------------------------------
6839 19 October 2007. Summary of changes for version 20071019:
6841 1) ACPI CA Core Subsystem:
6843 Fixed a problem with the Alias operator when the target of the alias is a
6844 named ASL operator that opens a new scope -- Scope, Device,
6846 Processor, and ThermalZone. In these cases, any children of the original
6847 operator could not be accessed via the alias, potentially causing
6849 AE_NOT_FOUND exceptions. (BZ 9067)
6851 Fixed a problem with the Package operator where all named references were
6852 created as object references and left otherwise unresolved. According to
6854 ACPI specification, a Package can only contain Data Objects or references
6856 control methods. The implication is that named references to Data Objects
6857 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6858 immediately upon package creation. This is the approach taken with this
6859 change. References to all other named objects (Methods, Devices, Scopes,
6860 etc.) are all now properly created as reference objects. (BZ 5328)
6862 Reverted a change to Notify handling that was introduced in version
6863 20070508. This version changed the Notify handling from asynchronous to
6864 fully synchronous (Device driver Notify handling with respect to the
6866 ASL operator). It was found that this change caused more problems than it
6867 solved and was removed by most users.
6869 Fixed a problem with the Increment and Decrement operators where the type
6871 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6874 Fixed a problem with the Load and LoadTable operators where the table
6875 location within the namespace was ignored. Instead, the table was always
6876 loaded into the root or current scope. Lin Ming.
6878 Fixed a problem with the Load operator when loading a table from a buffer
6879 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6881 Fixed a problem with the Debug object where a store of a DdbHandle
6883 object to the Debug object could cause a fault.
6885 Added a table checksum verification for the Load operator, in the case
6887 the load is from a buffer. (BZ 578).
6889 Implemented additional parameter validation for the LoadTable operator.
6891 length of the input strings SignatureString, OemIdString, and OemTableId
6893 now checked for maximum lengths. (BZ 582) Lin Ming.
6895 Example Code and Data Size: These are the sizes for the OS-independent
6896 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6897 debug version of the code includes the debug output trace mechanism and
6899 a much larger code and data size.
6902 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6903 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6905 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6906 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6909 2) iASL Compiler/Disassembler:
6911 Fixed a problem where if a single file was specified and the file did not
6912 exist, no error message was emitted. (Introduced with wildcard support in
6915 ----------------------------------------
6916 19 September 2007. Summary of changes for version 20070919:
6918 1) ACPI CA Core Subsystem:
6920 Designed and implemented new external interfaces to install and remove
6921 handlers for ACPI table-related events. Current events that are defined
6923 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6924 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6925 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6927 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6928 (acpi_serialized option on Linux) could cause some systems to hang during
6929 initialization. (Bob Moore) BZ 8171
6931 Fixed a problem where objects of certain types (Device, ThermalZone,
6932 Processor, PowerResource) can be not found if they are declared and
6933 referenced from within the same control method (Lin Ming) BZ 341
6935 Example Code and Data Size: These are the sizes for the OS-independent
6936 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6937 debug version of the code includes the debug output trace mechanism and
6939 a much larger code and data size.
6942 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6943 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6945 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6946 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6949 2) iASL Compiler/Disassembler:
6951 Implemented support to allow multiple files to be compiled/disassembled
6954 single invocation. This includes command line wildcard support for both
6956 Windows and Unix versions of the compiler. This feature simplifies the
6957 disassembly and compilation of multiple ACPI tables in a single
6960 ----------------------------------------
6961 08 May 2007. Summary of changes for version 20070508:
6963 1) ACPI CA Core Subsystem:
6965 Implemented a Microsoft compatibility design change for the handling of
6967 Notify AML operator. Previously, notify handlers were dispatched and
6968 executed completely asynchronously in a deferred thread. The new design
6969 still executes the notify handlers in a different thread, but the
6971 thread that executed the Notify() now waits at a synchronization point
6973 the notify handler to complete. Some machines depend on a synchronous
6975 operator in order to operate correctly.
6977 Implemented support to allow Package objects to be passed as method
6978 arguments to the external AcpiEvaluateObject interface. Previously, this
6979 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6980 implemented since there were no reserved control methods that required it
6983 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6985 contained invalid non-zero values in reserved fields could cause later
6986 failures because these fields have meaning in later revisions of the
6988 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6990 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6992 Fixed a problem where the Global Lock handle was not properly updated if
6994 thread that acquired the Global Lock via executing AML code then
6996 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
7000 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
7001 could be corrupted if the interrupt being removed was at the head of the
7002 list. Reported by Linn Crosetto.
7004 Example Code and Data Size: These are the sizes for the OS-independent
7005 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7006 debug version of the code includes the debug output trace mechanism and
7008 a much larger code and data size.
7011 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7012 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7014 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7015 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7017 ----------------------------------------
7018 20 March 2007. Summary of changes for version 20070320:
7020 1) ACPI CA Core Subsystem:
7022 Implemented a change to the order of interpretation and evaluation of AML
7023 operand objects within the AML interpreter. The interpreter now evaluates
7024 operands in the order that they appear in the AML stream (and the
7025 corresponding ASL code), instead of in the reverse order (after the
7027 operand list has been parsed). The previous behavior caused several
7029 incompatibilities with the Microsoft AML interpreter as well as being
7030 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
7032 Implemented a change to the ACPI Global Lock support. All interfaces to
7034 global lock now allow the same thread to acquire the lock multiple times.
7035 This affects the AcpiAcquireGlobalLock external interface to the global
7037 as well as the internal use of the global lock to support AML fields -- a
7038 control method that is holding the global lock can now simultaneously
7040 AML fields that require global lock protection. Previously, in both
7042 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
7044 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
7045 Controller. There is no change to the behavior of the AML Acquire
7047 as this can already be used to acquire a mutex multiple times by the same
7048 thread. BZ 8066. With assistance from Alexey Starikovskiy.
7050 Fixed a problem where invalid objects could be referenced in the AML
7051 Interpreter after error conditions. During operand evaluation, ensure
7053 the internal "Return Object" field is cleared on error and only valid
7054 pointers are stored there. Caused occasional access to deleted objects
7056 resulted in "large reference count" warning messages. Valery Podrezov.
7058 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
7060 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
7063 Fixed an internal problem with the handling of result objects on the
7064 interpreter result stack. BZ 7872. Valery Podrezov.
7066 Removed obsolete code that handled the case where AML_NAME_OP is the
7068 of a reference (Reference.Opcode). This code was no longer necessary. BZ
7069 7874. Valery Podrezov.
7071 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
7074 remnant from the previously discontinued 16-bit support.
7076 Example Code and Data Size: These are the sizes for the OS-independent
7077 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7078 debug version of the code includes the debug output trace mechanism and
7080 a much larger code and data size.
7083 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7084 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7086 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7087 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7089 ----------------------------------------
7090 26 January 2007. Summary of changes for version 20070126:
7092 1) ACPI CA Core Subsystem:
7094 Added the 2007 copyright to all module headers and signons. This affects
7095 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7098 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
7099 during a table load. A bad pointer was passed in the case where the DSDT
7101 overridden, causing a fault in this case.
7103 Example Code and Data Size: These are the sizes for the OS-independent
7104 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7105 debug version of the code includes the debug output trace mechanism and
7107 a much larger code and data size.
7110 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7111 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7113 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7114 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7116 ----------------------------------------
7117 15 December 2006. Summary of changes for version 20061215:
7119 1) ACPI CA Core Subsystem:
7121 Support for 16-bit ACPICA has been completely removed since it is no
7123 necessary and it clutters the code. All 16-bit macros, types, and
7124 conditional compiles have been removed, cleaning up and simplifying the
7126 across the entire subsystem. DOS support is no longer needed since the
7127 bootable Linux firmware kit is now available.
7129 The handler for the Global Lock is now removed during AcpiTerminate to
7130 enable a clean subsystem restart, via the implementation of the
7131 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
7134 Implemented enhancements to the multithreading support within the
7136 to enable improved multithreading debugging and evaluation of the
7140 Debugger: Enhanced the Statistics/Memory command to emit the total
7142 memory used during the execution, as well as the maximum memory consumed
7144 each of the various object types. (Valery Podrezov)
7146 Example Code and Data Size: These are the sizes for the OS-independent
7147 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7148 debug version of the code includes the debug output trace mechanism and
7150 a much larger code and data size.
7153 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7154 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7156 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7157 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7160 2) iASL Compiler/Disassembler and Tools:
7162 AcpiExec: Implemented a new option (-m) to display full memory use
7163 statistics upon subsystem/program termination. (Valery Podrezov)
7165 ----------------------------------------
7166 09 November 2006. Summary of changes for version 20061109:
7168 1) ACPI CA Core Subsystem:
7170 Optimized the Load ASL operator in the case where the source operand is
7172 operation region. Simply map the operation region memory, instead of
7173 performing a bytewise read. (Region must be of type SystemMemory, see
7176 Fixed the Load ASL operator for the case where the source operand is a
7177 region field. A buffer object is also allowed as the source operand. BZ
7180 Fixed a problem where the Load ASL operator allowed the source operand to
7182 an operation region of any type. It is now restricted to regions of type
7183 SystemMemory, as per the ACPI specification. BZ 481
7185 Additional cleanup and optimizations for the new Table Manager code.
7187 AcpiEnable will now fail if all of the required ACPI tables are not
7189 (FADT, FACS, DSDT). BZ 477
7191 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
7193 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
7194 manually optimized to be aligned and will not work if it is byte-packed.
7196 Example Code and Data Size: These are the sizes for the OS-independent
7197 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7198 debug version of the code includes the debug output trace mechanism and
7200 a much larger code and data size.
7203 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7204 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7206 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7207 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7210 2) iASL Compiler/Disassembler and Tools:
7212 Fixed a problem where the presence of the _OSI predefined control method
7213 within complex expressions could cause an internal compiler error.
7215 AcpiExec: Implemented full region support for multiple address spaces.
7216 SpaceId is now part of the REGION object. BZ 429
7218 ----------------------------------------
7219 11 October 2006. Summary of changes for version 20061011:
7221 1) ACPI CA Core Subsystem:
7223 Completed an AML interpreter performance enhancement for control method
7224 execution. Previously a 2-pass parse/execution, control methods are now
7225 completely parsed and executed in a single pass. This improves overall
7226 interpreter performance by ~25%, reduces code size, and reduces CPU stack
7227 use. (Valery Podrezov + interpreter changes in version 20051202 that
7228 eliminated namespace loading during the pass one parse.)
7230 Implemented _CID support for PCI Root Bridge detection. If the _HID does
7232 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
7234 obtained and also checked for an ID match.
7236 Implemented additional support for the PCI _ADR execution: upsearch until
7238 device scope is found before executing _ADR. This allows PCI_Config
7239 operation regions to be declared locally within control methods
7243 Fixed a problem with a possible race condition between threads executing
7244 AcpiWalkNamespace and the AML interpreter. This condition was removed by
7245 modifying AcpiWalkNamespace to (by default) ignore all temporary
7247 entries created during any concurrent control method execution. An
7248 additional namespace race condition is known to exist between
7249 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
7252 Restructured the AML ParseLoop function, breaking it into several
7253 subfunctions in order to reduce CPU stack use and improve
7257 AcpiGetHandle: Fix for parameter validation to detect invalid
7259 of prefix handle and pathname. BZ 478
7261 Example Code and Data Size: These are the sizes for the OS-independent
7262 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7263 debug version of the code includes the debug output trace mechanism and
7265 a much larger code and data size.
7268 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7269 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7271 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7272 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7274 2) iASL Compiler/Disassembler and Tools:
7276 Ported the -g option (get local ACPI tables) to the new ACPICA Table
7278 to restore original behavior.
7280 ----------------------------------------
7281 27 September 2006. Summary of changes for version 20060927:
7283 1) ACPI CA Core Subsystem:
7285 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
7286 These functions now use a spinlock for mutual exclusion and the interrupt
7287 level indication flag is not needed.
7289 Fixed a problem with the Global Lock where the lock could appear to be
7290 obtained before it is actually obtained. The global lock semaphore was
7291 inadvertently created with one unit instead of zero units. (BZ 464)
7295 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
7297 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
7299 Example Code and Data Size: These are the sizes for the OS-independent
7300 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7301 debug version of the code includes the debug output trace mechanism and
7303 a much larger code and data size.
7306 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7307 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7309 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7310 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7313 2) iASL Compiler/Disassembler and Tools:
7315 Fixed a compilation problem with the pre-defined Resource Descriptor
7317 names where an "object does not exist" error could be incorrectly
7319 if the parent ResourceTemplate pathname places the template within a
7320 different namespace scope than the current scope. (BZ 7212)
7322 Fixed a problem where the compiler could hang after syntax errors
7324 in an ElseIf construct. (BZ 453)
7326 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
7327 operator. An incorrect output filename was produced when this parameter
7329 a null string (""). Now, the original input filename is used as the AML
7330 output filename, with an ".aml" extension.
7332 Implemented a generic batch command mode for the AcpiExec utility
7334 any AML debugger command) (Valery Podrezov).
7336 ----------------------------------------
7337 12 September 2006. Summary of changes for version 20060912:
7339 1) ACPI CA Core Subsystem:
7341 Enhanced the implementation of the "serialized mode" of the interpreter
7342 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
7343 specified, instead of creating a serialization semaphore per control
7345 the interpreter lock is simply no longer released before a blocking
7346 operation during control method execution. This effectively makes the AML
7347 Interpreter single-threaded. The overhead of a semaphore per-method is
7350 Fixed a regression where an error was no longer emitted if a control
7352 attempts to create 2 objects of the same name. This once again returns
7353 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
7355 will dynamically serialize the control method to possible prevent future
7358 Integrated a fix for a problem with PCI Express HID detection in the PCI
7359 Config Space setup procedure. (BZ 7145)
7361 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
7362 AcpiHwInitialize function - the FADT registers are now validated when the
7365 Added two new warnings during FADT verification - 1) if the FADT is
7367 than the largest known FADT version, and 2) if there is a mismatch
7370 32-bit block address and the 64-bit X counterpart (when both are non-
7373 Example Code and Data Size: These are the sizes for the OS-independent
7374 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7375 debug version of the code includes the debug output trace mechanism and
7377 a much larger code and data size.
7380 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7381 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7383 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7384 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7387 2) iASL Compiler/Disassembler and Tools:
7389 Fixed a problem with the implementation of the Switch() operator where
7391 temporary variable was declared too close to the actual Switch, instead
7393 at method level. This could cause a problem if the Switch() operator is
7394 within a while loop, causing an error on the second iteration. (BZ 460)
7396 Disassembler - fix for error emitted for unknown type for target of scope
7397 operator. Now, ignore it and continue.
7399 Disassembly of an FADT now verifies the input FADT and reports any errors
7400 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
7402 Disassembly of raw data buffers with byte initialization data now
7404 each output line with the current buffer offset.
7406 Disassembly of ASF! table now includes all variable-length data fields at
7407 the end of some of the subtables.
7409 The disassembler now emits a comment if a buffer appears to be a
7410 ResourceTemplate, but cannot be disassembled as such because the EndTag
7412 not appear at the very end of the buffer.
7414 AcpiExec - Added the "-t" command line option to enable the serialized
7416 of the AML interpreter.
7418 ----------------------------------------
7419 31 August 2006. Summary of changes for version 20060831:
7421 1) ACPI CA Core Subsystem:
7423 Miscellaneous fixes for the Table Manager:
7424 - Correctly initialize internal common FADT for all 64-bit "X" fields
7425 - Fixed a couple table mapping issues during table load
7426 - Fixed a couple alignment issues for IA64
7427 - Initialize input array to zero in AcpiInitializeTables
7428 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
7431 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
7433 immediately disabled to prevent the waking GPE from firing again and to
7434 prevent other wake GPEs from interrupting the wake process.
7436 Added the AcpiGpeCount global that tracks the number of processed GPEs,
7438 be used for debugging systems with a large number of ACPI interrupts.
7440 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
7441 both the ACPICA headers and the disassembler.
7443 Example Code and Data Size: These are the sizes for the OS-independent
7444 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7445 debug version of the code includes the debug output trace mechanism and
7447 a much larger code and data size.
7450 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7451 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7453 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7454 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7457 2) iASL Compiler/Disassembler and Tools:
7459 Disassembler support for the DMAR ACPI table.
7461 ----------------------------------------
7462 23 August 2006. Summary of changes for version 20060823:
7464 1) ACPI CA Core Subsystem:
7466 The Table Manager component has been completely redesigned and
7467 reimplemented. The new design is much simpler, and reduces the overall
7469 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
7471 now possible to obtain the ACPI tables very early during kernel
7472 initialization, even before dynamic memory management is initialized.
7473 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
7475 Obsolete ACPICA interfaces:
7477 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
7480 - AcpiLoadTable: Not needed.
7481 - AcpiUnloadTable: Not needed.
7483 New ACPICA interfaces:
7485 - AcpiInitializeTables: Must be called before the table manager can be
7487 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
7488 allocated memory after it becomes available.
7489 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
7493 Other ACPICA changes:
7495 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
7497 AcpiOsUnmapMemory to free this mapping.
7498 - AcpiGetTable returns the actual mapped table. The mapping is managed
7499 internally and must not be deleted by the caller. Use of this interface
7500 causes no additional dynamic memory allocation.
7501 - AcpiFindRootPointer: Support for physical addressing has been
7503 it appeared to be unused.
7504 - The interface to AcpiOsMapMemory has changed to be consistent with the
7505 other allocation interfaces.
7506 - The interface to AcpiOsGetRootPointer has changed to eliminate
7509 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
7511 bit platforms. Was previously 64 bits on all platforms.
7512 - The interface to the ACPI Global Lock acquire/release macros have
7514 slightly since ACPICA no longer keeps a local copy of the FACS with a
7515 constructed pointer to the actual global lock.
7517 Porting to the new table manager:
7519 - AcpiInitializeTables: Must be called once, and can be called anytime
7520 during the OS initialization process. It allows the host to specify an
7522 of memory to be used to store the internal version of the RSDT/XSDT (root
7523 table). This allows the host to access ACPI tables before memory
7525 is initialized and running.
7526 - AcpiReallocateRootTable: Can be called after memory management is
7528 to copy the root table to a dynamically allocated array, freeing up the
7529 scratch memory specified in the call to AcpiInitializeTables.
7530 - AcpiSubsystemInitialize: This existing interface is independent of the
7531 Table Manager, and does not have to be called before the Table Manager
7533 be used, it only must be called before the rest of ACPICA can be used.
7534 - ACPI Tables: Some changes have been made to the names and structure of
7536 actbl.h and actbl1.h header files and may require changes to existing
7538 For example, bitfields have been completely removed because of their lack
7540 portability across C compilers.
7541 - Update interfaces to the Global Lock acquire/release macros if local
7542 versions are used. (see acwin.h)
7544 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
7548 Example Code and Data Size: These are the sizes for the OS-independent
7549 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7550 debug version of the code includes the debug output trace mechanism and
7552 a much larger code and data size.
7555 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7556 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7558 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7559 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7562 2) iASL Compiler/Disassembler and Tools:
7564 No changes for this release.
7566 ----------------------------------------
7567 21 July 2006. Summary of changes for version 20060721:
7569 1) ACPI CA Core Subsystem:
7571 The full source code for the ASL test suite used to validate the iASL
7572 compiler and the ACPICA core subsystem is being released with the ACPICA
7573 source for the first time. The source is contained in a separate package
7575 consists of over 1100 files that exercise all ASL/AML operators. The
7577 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
7581 Completed a new design and implementation for support of the ACPI Global
7582 Lock. On the OS side, the global lock is now treated as a standard AML
7583 mutex. Previously, multiple OS threads could "acquire" the global lock
7584 simultaneously. However, this could cause the BIOS to be starved out of
7586 lock - especially in cases such as the Embedded Controller driver where
7587 there is a tight coupling between the OS and the BIOS.
7589 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
7590 The Global Lock interrupt handler no longer queues the execution of a
7591 separate thread to signal the global lock semaphore. Instead, the
7593 is signaled directly from the interrupt handler.
7595 Implemented support within the AML interpreter for package objects that
7596 contain a larger AML length (package list length) than the package
7598 count. In this case, the length of the package is truncated to match the
7599 package element count. Some BIOS code apparently modifies the package
7601 on the fly, and this change supports this behavior. Provides
7603 with the MS AML interpreter. (With assistance from Fiodor Suietov)
7605 Implemented a temporary fix for the BankValue parameter of a Bank Field
7607 support all constant values, now including the Zero and One opcodes.
7608 Evaluation of this parameter must eventually be converted to a full
7610 evaluation. A not-implemented error is now returned (temporarily) for
7612 constant values for this parameter.
7614 Fixed problem reports (Fiodor Suietov) integrated:
7615 - Fix for premature object deletion after CopyObject on Operation Region
7619 Example Code and Data Size: These are the sizes for the OS-independent
7620 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7621 debug version of the code includes the debug output trace mechanism and
7623 a much larger code and data size.
7626 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7627 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
7629 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7630 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7633 2) iASL Compiler/Disassembler and Tools:
7635 No changes for this release.
7637 ----------------------------------------
7638 07 July 2006. Summary of changes for version 20060707:
7640 1) ACPI CA Core Subsystem:
7642 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7643 that do not allow the initialization of address pointers within packed
7644 structures - even though the hardware itself may support misaligned
7645 transfers. Some of the debug data structures are packed by default to
7648 Added an error message for the case where AcpiOsGetThreadId() returns
7650 A non-zero value is required by the core ACPICA code to ensure the proper
7651 operation of AML mutexes and recursive control methods.
7653 The DSDT is now the only ACPI table that determines whether the AML
7654 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7656 the hooks for per-table 32/64 switching have been removed from the code.
7658 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7660 Fixed a possible leak of an OwnerID in the error path of
7661 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7662 deletion to a single place in AcpiTbUninstallTable to correct possible
7664 when using the AcpiTbDeleteTablesByType interface (with assistance from
7667 Fixed a problem with Serialized control methods where the semaphore
7668 associated with the method could be over-signaled after multiple method
7671 Fixed two issues with the locking of the internal namespace data
7673 Both the Unload() operator and AcpiUnloadTable interface now lock the
7674 namespace during the namespace deletion associated with the table unload
7675 (with assistance from Linn Crosetto.)
7677 Fixed problem reports (Valery Podrezov) integrated:
7678 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7680 Fixed problem reports (Fiodor Suietov) integrated:
7681 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7682 - On Address Space handler deletion, needless deactivation call (BZ 374)
7683 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7685 - Possible memory leak, Notify sub-objects of Processor, Power,
7688 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7689 - Minimum Length of RSDT should be validated (BZ 379)
7690 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7692 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7696 Example Code and Data Size: These are the sizes for the OS-independent
7697 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7698 debug version of the code includes the debug output trace mechanism and
7700 a much larger code and data size.
7703 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7704 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7706 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7707 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7710 2) iASL Compiler/Disassembler and Tools:
7712 Fixed problem reports:
7713 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7716 ----------------------------------------
7717 23 June 2006. Summary of changes for version 20060623:
7719 1) ACPI CA Core Subsystem:
7721 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7722 allows the type to be customized to the host OS for improved efficiency
7723 (since a spinlock is usually a very small object.)
7725 Implemented support for "ignored" bits in the ACPI registers. According
7727 the ACPI specification, these bits should be preserved when writing the
7728 registers via a read/modify/write cycle. There are 3 bits preserved in
7730 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7732 Implemented the initial deployment of new OSL mutex interfaces. Since
7734 host operating systems have separate mutex and semaphore objects, this
7735 feature was requested. The base code now uses mutexes (and the new mutex
7736 interfaces) wherever a binary semaphore was used previously. However, for
7737 the current release, the mutex interfaces are defined as macros to map
7739 to the existing semaphore interfaces. Therefore, no OSL changes are
7741 at this time. (See acpiosxf.h)
7743 Fixed several problems with the support for the control method SyncLevel
7744 parameter. The SyncLevel now works according to the ACPI specification
7746 in concert with the Mutex SyncLevel parameter, since the current
7748 is a property of the executing thread. Mutual exclusion for control
7750 is now implemented with a mutex instead of a semaphore.
7752 Fixed three instances of the use of the C shift operator in the bitfield
7753 support code (exfldio.c) to avoid the use of a shift value larger than
7755 target data width. The behavior of C compilers is undefined in this case
7757 can cause unpredictable results, and therefore the case must be detected
7759 avoided. (Fiodor Suietov)
7761 Added an info message whenever an SSDT or OEM table is loaded dynamically
7762 via the Load() or LoadTable() ASL operators. This should improve
7764 capability since it will show exactly what tables have been loaded
7766 the tables present in the RSDT/XSDT.)
7768 Example Code and Data Size: These are the sizes for the OS-independent
7769 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7770 debug version of the code includes the debug output trace mechanism and
7772 a much larger code and data size.
7775 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7776 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7778 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7779 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7782 2) iASL Compiler/Disassembler and Tools:
7784 No changes for this release.
7786 ----------------------------------------
7787 08 June 2006. Summary of changes for version 20060608:
7789 1) ACPI CA Core Subsystem:
7791 Converted the locking mutex used for the ACPI hardware to a spinlock.
7793 change should eliminate all problems caused by attempting to acquire a
7794 semaphore at interrupt level, and it means that all ACPICA external
7795 interfaces that directly access the ACPI hardware can be safely called
7797 interrupt level. OSL code that implements the semaphore interfaces should
7799 able to eliminate any workarounds for being called at interrupt level.
7801 Fixed a regression introduced in 20060526 where the ACPI device
7802 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7804 did not have an optional _INI method.
7806 Fixed an IndexField issue where a write to the Data Register should be
7807 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7811 Fixed problem reports (Valery Podrezov) integrated:
7812 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7814 Fixed problem reports (Fiodor Suietov) integrated:
7815 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7817 Removed four global mutexes that were obsolete and were no longer being
7820 Example Code and Data Size: These are the sizes for the OS-independent
7821 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7822 debug version of the code includes the debug output trace mechanism and
7824 a much larger code and data size.
7827 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7828 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7830 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7831 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7834 2) iASL Compiler/Disassembler and Tools:
7836 Fixed a fault when using -g option (get tables from registry) on Windows
7839 Fixed problem reports integrated:
7840 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7841 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7843 - Global table revision override (-r) is ignored (BZ 413)
7845 ----------------------------------------
7846 26 May 2006. Summary of changes for version 20060526:
7848 1) ACPI CA Core Subsystem:
7850 Restructured, flattened, and simplified the internal interfaces for
7851 namespace object evaluation - resulting in smaller code, less CPU stack
7853 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7855 Fixed a problem with the CopyObject operator where the first parameter
7857 not typed correctly for the parser, interpreter, compiler, and
7859 Caused various errors and unexpected behavior.
7861 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7862 produced incorrect results with some C compilers. Since the behavior of C
7863 compilers when the shift value is larger than the datatype width is
7864 apparently not well defined, the interpreter now detects this condition
7866 simply returns zero as expected in all such cases. (BZ 395)
7868 Fixed problem reports (Valery Podrezov) integrated:
7869 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7870 - Allow interpreter to handle nested method declarations (BZ 5361)
7872 Fixed problem reports (Fiodor Suietov) integrated:
7873 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7875 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7877 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7878 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7879 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7880 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7881 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7882 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7883 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7885 - Status of the Global Initialization Handler call not used (BZ 366)
7886 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7888 Example Code and Data Size: These are the sizes for the OS-independent
7889 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7890 debug version of the code includes the debug output trace mechanism and
7892 a much larger code and data size.
7895 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7896 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7898 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7899 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7902 2) iASL Compiler/Disassembler and Tools:
7904 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7905 namespace identifiers with no collision with existing resource descriptor
7906 macro names. This provides compatibility with other ASL compilers and is
7907 most useful for disassembly/recompilation of existing tables without
7909 errors. (With assistance from Thomas Renninger)
7911 Disassembler: fixed an incorrect disassembly problem with the
7912 DataTableRegion and CopyObject operators. Fixed a possible fault during
7913 disassembly of some Alias operators.
7915 ----------------------------------------
7916 12 May 2006. Summary of changes for version 20060512:
7918 1) ACPI CA Core Subsystem:
7920 Replaced the AcpiOsQueueForExecution interface with a new interface named
7921 AcpiOsExecute. The major difference is that the new interface does not
7923 a Priority parameter, this appeared to be useless and has been replaced
7926 Type parameter. The Type tells the host what type of execution is being
7927 requested, such as global lock handler, notify handler, GPE handler, etc.
7928 This allows the host to queue and execute the request as appropriate for
7930 request type, possibly using different work queues and different
7932 for the various request types. This enables fixes for multithreading
7933 deadlock problems such as BZ #5534, and will require changes to all
7935 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7937 Fixed a possible memory leak associated with the support for the so-
7939 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7942 Fixed a problem with the Load() operator where a table load from an
7943 operation region could overwrite an internal table buffer by up to 7
7945 and cause alignment faults on IPF systems. (With assistance from Luming
7948 Example Code and Data Size: These are the sizes for the OS-independent
7949 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7950 debug version of the code includes the debug output trace mechanism and
7952 a much larger code and data size.
7955 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7956 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7958 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7959 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7963 2) iASL Compiler/Disassembler and Tools:
7965 Disassembler: Implemented support to cross reference the internal
7967 and automatically generate ASL External() statements for symbols not
7969 within the current table being disassembled. This will simplify the
7970 disassembly and recompilation of interdependent tables such as SSDTs
7972 these statements will no longer have to be added manually.
7974 Disassembler: Implemented experimental support to automatically detect
7975 invocations of external control methods and generate appropriate
7977 statements. This is problematic because the AML cannot be correctly
7979 until the number of arguments for each control method is known.
7981 standalone method invocations and invocations as the source operand of a
7982 Store() statement are supported.
7984 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7985 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7986 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7987 more readable and likely closer to the original ASL source.
7989 ----------------------------------------
7990 21 April 2006. Summary of changes for version 20060421:
7992 1) ACPI CA Core Subsystem:
7994 Removed a device initialization optimization introduced in 20051216 where
7995 the _STA method was not run unless an _INI was also present for the same
7996 device. This optimization could cause problems because it could allow
7998 methods to be run within a not-present device subtree. (If a not-present
7999 device had no _INI, _STA would not be run, the not-present status would
8001 be discovered, and the children of the device would be incorrectly
8004 Implemented a new _STA optimization where namespace subtrees that do not
8005 contain _INI are identified and ignored during device initialization.
8006 Selectively running _STA can significantly improve boot time on large
8007 machines (with assistance from Len Brown.)
8009 Implemented support for the device initialization case where the returned
8010 _STA flags indicate a device not-present but functioning. In this case,
8012 is not run, but the device children are examined for presence, as per the
8015 Implemented an additional change to the IndexField support in order to
8016 conform to MS behavior. The value written to the Index Register is not
8017 simply a byte offset, it is a byte offset in units of the access width of
8018 the parent Index Field. (Fiodor Suietov)
8020 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
8021 interface is called during the creation of all AML operation regions, and
8022 allows the host OS to exert control over what addresses it will allow the
8023 AML code to access. Operation Regions whose addresses are disallowed will
8024 cause a runtime exception when they are actually accessed (will not
8026 or abort table loading.) See oswinxf or osunixxf for an example
8029 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
8030 interface allows the host OS to match the various "optional"
8031 interface/behavior strings for the _OSI predefined control method as
8032 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
8033 for an example implementation.
8035 Restructured and corrected various problems in the exception handling
8037 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
8038 (with assistance from Takayoshi Kochi.)
8040 Modified the Linux source converter to ignore quoted string literals
8042 converting identifiers from mixed to lower case. This will correct
8044 with the disassembler and other areas where such strings must not be
8047 The ACPI_FUNCTION_* macros no longer require quotes around the function
8048 name. This allows the Linux source converter to convert the names, now
8050 the converter ignores quoted strings.
8052 Example Code and Data Size: These are the sizes for the OS-independent
8053 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8054 debug version of the code includes the debug output trace mechanism and
8056 a much larger code and data size.
8060 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8061 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8063 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8064 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8067 2) iASL Compiler/Disassembler and Tools:
8069 Implemented 3 new warnings for iASL, and implemented multiple warning
8073 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
8075 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
8076 check for the possible timeout, a warning is issued.
8078 2) Useless operators: If an ASL operator does not specify an optional
8080 operand and it also does not use the function return value from the
8081 operator, a warning is issued since the operator effectively does
8084 3) Unreferenced objects: If a namespace object is created, but never
8085 referenced, a warning is issued. This is a warning level 2 since there
8087 cases where this is ok, such as when a secondary table is loaded that
8089 the unreferenced objects. Even so, care is taken to only flag objects
8091 don't look like they will ever be used. For example, the reserved methods
8092 (starting with an underscore) are usually not referenced because it is
8093 expected that the OS will invoke them.
8095 ----------------------------------------
8096 31 March 2006. Summary of changes for version 20060331:
8098 1) ACPI CA Core Subsystem:
8100 Implemented header file support for the following additional ACPI tables:
8101 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
8103 all current and known ACPI tables are now defined in the ACPICA headers
8105 are available for use by device drivers and other software.
8107 Implemented support to allow tables that contain ACPI names with invalid
8108 characters to be loaded. Previously, this would cause the table load to
8109 fail, but since there are several known cases of such tables on existing
8110 machines, this change was made to enable ACPI support for them. Also,
8112 matches the behavior of the Microsoft ACPI implementation.
8114 Fixed a couple regressions introduced during the memory optimization in
8116 20060317 release. The namespace node definition required additional
8117 reorganization and an internal datatype that had been changed to 8-bit
8119 restored to 32-bit. (Valery Podrezov)
8121 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
8122 could be passed through to AcpiOsReleaseObject which is unexpected. Such
8123 null pointers are now trapped and ignored, matching the behavior of the
8124 previous implementation before the deployment of AcpiOsReleaseObject.
8125 (Valery Podrezov, Fiodor Suietov)
8127 Fixed a memory mapping leak during the deletion of a SystemMemory
8129 region where a cached memory mapping was not deleted. This became a
8130 noticeable problem for operation regions that are defined within
8132 used control methods. (Dana Meyers)
8134 Reorganized the ACPI table header files into two main files: one for the
8135 ACPI tables consumed by the ACPICA core, and another for the
8137 ACPI tables that are consumed by the drivers and other software. The
8139 FADT definitions were merged into one common section and three different
8140 tables (ACPI 1.0, 1.0+, and 2.0)
8142 Example Code and Data Size: These are the sizes for the OS-independent
8143 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8144 debug version of the code includes the debug output trace mechanism and
8146 a much larger code and data size.
8149 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8150 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8152 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8153 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8156 2) iASL Compiler/Disassembler and Tools:
8158 Disassembler: Implemented support to decode and format all non-AML ACPI
8159 tables (tables other than DSDTs and SSDTs.) This includes the new tables
8160 added to the ACPICA headers, therefore all current and known ACPI tables
8164 Disassembler: The change to allow ACPI names with invalid characters also
8165 enables the disassembly of such tables. Invalid characters within names
8167 changed to '*' to make the name printable; the iASL compiler will still
8168 generate an error for such names, however, since this is an invalid ACPI
8171 Implemented an option for AcpiXtract (-a) to extract all tables found in
8173 input file. The default invocation extracts only the DSDTs and SSDTs.
8175 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
8176 makefile for the AcpiXtract utility.
8178 ----------------------------------------
8179 17 March 2006. Summary of changes for version 20060317:
8181 1) ACPI CA Core Subsystem:
8183 Implemented the use of a cache object for all internal namespace nodes.
8184 Since there are about 1000 static nodes in a typical system, this will
8185 decrease memory use for cache implementations that minimize per-
8187 overhead (such as a slab allocator.)
8189 Removed the reference count mechanism for internal namespace nodes, since
8191 was deemed unnecessary. This reduces the size of each namespace node by
8192 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
8194 and 32 bytes for the 64-bit case.
8196 Optimized several internal data structures to reduce object size on 64-
8198 platforms by packing data within the 64-bit alignment. This includes the
8199 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
8200 instances corresponding to the namespace objects.
8202 Added two new strings for the predefined _OSI method: "Windows 2001.1
8206 Split the allocation tracking mechanism out to a separate file, from
8207 utalloc.c to uttrack.c. This mechanism appears to be only useful for
8208 application-level code. Kernels may wish to not include uttrack.c in
8211 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
8213 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
8216 Code and Data Size: These are the sizes for the acpica.lib produced by
8218 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8220 driver or OSPM code. The debug version of the code includes the debug
8222 trace mechanism and has a much larger code and data size. Note that these
8223 values will vary depending on the efficiency of the compiler and the
8224 compiler options used during generation.
8227 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8228 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8230 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8231 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8234 2) iASL Compiler/Disassembler and Tools:
8236 Implemented an ANSI C version of the acpixtract utility. This version
8238 automatically extract the DSDT and all SSDTs from the input acpidump text
8239 file and dump the binary output to separate files. It can also display a
8240 summary of the input file including the headers for each table found and
8241 will extract any single ACPI table, with any signature. (See
8242 source/tools/acpixtract)
8244 ----------------------------------------
8245 10 March 2006. Summary of changes for version 20060310:
8247 1) ACPI CA Core Subsystem:
8249 Tagged all external interfaces to the subsystem with the new
8250 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
8252 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
8253 macro. The default definition is NULL.
8255 Added the ACPI_THREAD_ID type for the return value from
8257 This allows the host to define this as necessary to simplify kernel
8258 integration. The default definition is ACPI_NATIVE_UINT.
8260 Fixed two interpreter problems related to error processing, the deletion
8262 objects, and placing invalid pointers onto the internal operator result
8263 stack. BZ 6028, 6151 (Valery Podrezov)
8265 Increased the reference count threshold where a warning is emitted for
8267 reference counts in order to eliminate unnecessary warnings on systems
8269 large namespaces (especially 64-bit.) Increased the value from 0x400 to
8272 Due to universal disagreement as to the meaning of the 'c' in the
8274 function, the ACPI_MEM_CALLOCATE macro has been renamed to
8275 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
8276 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
8279 Code and Data Size: These are the sizes for the acpica.lib produced by
8281 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8283 driver or OSPM code. The debug version of the code includes the debug
8285 trace mechanism and has a much larger code and data size. Note that these
8286 values will vary depending on the efficiency of the compiler and the
8287 compiler options used during generation.
8290 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8291 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8293 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8294 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8297 2) iASL Compiler/Disassembler:
8299 Disassembler: implemented support for symbolic resource descriptor
8300 references. If a CreateXxxxField operator references a fixed offset
8303 resource descriptor, a name is assigned to the descriptor and the offset
8305 translated to the appropriate resource tag and pathname. The addition of
8306 this support brings the disassembled code very close to the original ASL
8307 source code and helps eliminate run-time errors when the disassembled
8309 is modified (and recompiled) in such a way as to invalidate the original
8312 Implemented support for a Descriptor Name as the last parameter to the
8314 Register() macro. This parameter was inadvertently left out of the ACPI
8315 specification, and will be added for ACPI 3.0b.
8317 Fixed a problem where the use of the "_OSI" string (versus the full path
8318 "\_OSI") caused an internal compiler error. ("No back ptr to op")
8320 Fixed a problem with the error message that occurs when an invalid string
8322 used for a _HID object (such as one with an embedded asterisk:
8324 The correct message is now displayed.
8326 ----------------------------------------
8327 17 February 2006. Summary of changes for version 20060217:
8329 1) ACPI CA Core Subsystem:
8331 Implemented a change to the IndexField support to match the behavior of
8333 Microsoft AML interpreter. The value written to the Index register is now
8335 byte offset, no longer an index based upon the width of the Data
8337 This should fix IndexField problems seen on some machines where the Data
8338 register is not exactly one byte wide. The ACPI specification will be
8339 clarified on this point.
8341 Fixed a problem where several resource descriptor types could overrun the
8342 internal descriptor buffer due to size miscalculation: VendorShort,
8343 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
8344 affect all platforms.
8346 Fixed a problem where individual resource descriptors were misaligned
8348 the internal buffer, causing alignment faults on IA64 platforms.
8350 Code and Data Size: These are the sizes for the acpica.lib produced by
8352 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8354 driver or OSPM code. The debug version of the code includes the debug
8356 trace mechanism and has a much larger code and data size. Note that these
8357 values will vary depending on the efficiency of the compiler and the
8358 compiler options used during generation.
8361 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8362 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8364 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8365 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8368 2) iASL Compiler/Disassembler:
8370 Implemented support for new reserved names: _WDG and _WED are Microsoft
8371 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
8372 defined method (Throttling Depth Limit.)
8374 Fixed a problem where a zero-length VendorShort or VendorLong resource
8375 descriptor was incorrectly emitted as a descriptor of length one.
8377 ----------------------------------------
8378 10 February 2006. Summary of changes for version 20060210:
8380 1) ACPI CA Core Subsystem:
8382 Removed a couple of extraneous ACPI_ERROR messages that appeared during
8383 normal execution. These became apparent after the conversion from
8386 Fixed a problem where the CreateField operator could hang if the BitIndex
8388 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
8390 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
8391 failed with an exception. This also fixes a couple of related RefOf and
8392 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
8394 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
8396 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
8400 Implemented a memory cleanup at the end of the execution of each
8402 of an AML While() loop, preventing the accumulation of outstanding
8404 (Valery Podrezov, BZ 5427)
8406 Eliminated a chunk of duplicate code in the object resolution code.
8410 Fixed several warnings during the 64-bit code generation.
8412 The AcpiSrc source code conversion tool now inserts one line of
8414 after an if() statement that is followed immediately by a comment,
8416 readability of the Linux code.
8418 Code and Data Size: The current and previous library sizes for the core
8419 subsystem are shown below. These are the code and data sizes for the
8420 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8422 values do not include any ACPI driver or OSPM code. The debug version of
8424 code includes the debug output trace mechanism and has a much larger code
8425 and data size. Note that these values will vary depending on the
8427 of the compiler and the compiler options used during generation.
8430 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8431 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8433 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8434 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8437 2) iASL Compiler/Disassembler:
8439 Fixed a problem with the disassembly of a BankField operator with a
8441 expression for the BankValue parameter.
8443 ----------------------------------------
8444 27 January 2006. Summary of changes for version 20060127:
8446 1) ACPI CA Core Subsystem:
8448 Implemented support in the Resource Manager to allow unresolved
8450 references within resource package objects for the _PRT method. This
8452 is in addition to the previously implemented unresolved reference support
8453 within the AML parser. If the interpreter slack mode is enabled, these
8454 unresolved references will be passed through to the caller as a NULL
8458 Implemented and deployed new macros and functions for error and warning
8459 messages across the subsystem. These macros are simpler and generate less
8460 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
8461 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
8462 macros remain defined to allow ACPI drivers time to migrate to the new
8465 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
8467 Acquire/Release Lock OSL interfaces.
8469 Fixed a problem where Alias ASL operators are sometimes not correctly
8470 resolved, in both the interpreter and the iASL compiler.
8472 Fixed several problems with the implementation of the
8473 ConcatenateResTemplate
8474 ASL operator. As per the ACPI specification, zero length buffers are now
8475 treated as a single EndTag. One-length buffers always cause a fatal
8476 exception. Non-zero length buffers that do not end with a full 2-byte
8478 cause a fatal exception.
8480 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
8481 interface. (With assistance from Thomas Renninger)
8483 Code and Data Size: The current and previous library sizes for the core
8484 subsystem are shown below. These are the code and data sizes for the
8485 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8487 values do not include any ACPI driver or OSPM code. The debug version of
8489 code includes the debug output trace mechanism and has a much larger code
8490 and data size. Note that these values will vary depending on the
8492 of the compiler and the compiler options used during generation.
8495 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8496 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8498 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8499 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8502 2) iASL Compiler/Disassembler:
8504 Fixed an internal error that was generated for any forward references to
8508 ----------------------------------------
8509 13 January 2006. Summary of changes for version 20060113:
8511 1) ACPI CA Core Subsystem:
8513 Added 2006 copyright to all module headers and signons. This affects
8514 virtually every file in the ACPICA core subsystem, iASL compiler, and the
8517 Enhanced the ACPICA error reporting in order to simplify user migration
8519 the non-debug version of ACPICA. Replaced all instances of the
8520 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
8522 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
8523 respectively. This preserves all error and warning messages in the non-
8525 version of the ACPICA code (this has been referred to as the "debug lite"
8526 option.) Over 200 cases were converted to create a total of over 380
8527 error/warning messages across the ACPICA code. This increases the code
8529 data size of the default non-debug version of the code somewhat (about
8531 but all error/warning reporting may be disabled if desired (and code
8532 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
8533 configuration option. The size of the debug version of ACPICA remains
8537 Fixed a memory leak within the AML Debugger "Set" command. One object was
8538 not properly deleted for every successful invocation of the command.
8540 Code and Data Size: The current and previous library sizes for the core
8541 subsystem are shown below. These are the code and data sizes for the
8542 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8544 values do not include any ACPI driver or OSPM code. The debug version of
8546 code includes the debug output trace mechanism and has a much larger code
8547 and data size. Note that these values will vary depending on the
8549 of the compiler and the compiler options used during generation.
8552 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8553 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8555 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8556 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8559 2) iASL Compiler/Disassembler:
8561 The compiler now officially supports the ACPI 3.0a specification that was
8562 released on December 30, 2005. (Specification is available at
8565 ----------------------------------------
8566 16 December 2005. Summary of changes for version 20051216:
8568 1) ACPI CA Core Subsystem:
8570 Implemented optional support to allow unresolved names within ASL Package
8571 objects. A null object is inserted in the package when a named reference
8572 cannot be located in the current namespace. Enabled via the interpreter
8573 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
8575 that contain such code.
8577 Implemented an optimization to the initialization sequence that can
8579 boot time. During ACPI device initialization, the _STA method is now run
8581 and only if the _INI method exists. The _STA method is used to determine
8583 the device is present; An _INI can only be run if _STA returns present,
8585 it is a waste of time to run the _STA method if the _INI does not exist.
8586 (Prototype and assistance from Dong Wei)
8588 Implemented use of the C99 uintptr_t for the pointer casting macros if it
8590 available in the current compiler. Otherwise, the default (void *) cast
8594 Fixed some possible memory leaks found within the execution path of the
8595 Break, Continue, If, and CreateField operators. (Valery Podrezov)
8597 Fixed a problem introduced in the 20051202 release where an exception is
8598 generated during method execution if a control method attempts to declare
8601 Moved resource descriptor string constants that are used by both the AML
8602 disassembler and AML debugger to the common utilities directory so that
8603 these components are independent.
8605 Implemented support in the AcpiExec utility (-e switch) to globally
8607 exceptions during control method execution (method is not aborted.)
8609 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
8612 Code and Data Size: The current and previous library sizes for the core
8613 subsystem are shown below. These are the code and data sizes for the
8614 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8616 values do not include any ACPI driver or OSPM code. The debug version of
8618 code includes the debug output trace mechanism and has a much larger code
8619 and data size. Note that these values will vary depending on the
8621 of the compiler and the compiler options used during generation.
8624 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8625 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8627 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8628 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8631 2) iASL Compiler/Disassembler:
8633 Fixed a problem where a CPU stack overflow fault could occur if a
8635 method call was made from within a Return statement.
8637 ----------------------------------------
8638 02 December 2005. Summary of changes for version 20051202:
8640 1) ACPI CA Core Subsystem:
8642 Modified the parsing of control methods to no longer create namespace
8643 objects during the first pass of the parse. Objects are now created only
8644 during the execute phase, at the moment the namespace creation operator
8646 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8648 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8649 reentrant control methods are protected by an AML mutex. The mutex will
8651 correctly block multiple threads from attempting to create the same
8655 Increased the number of available Owner Ids for namespace object tracking
8656 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8658 some machines with a large number of ACPI tables (either static or
8661 Fixed a problem with the AcpiExec utility where a fault could occur when
8663 -b switch (batch mode) is used.
8665 Enhanced the namespace dump routine to output the owner ID for each
8668 Code and Data Size: The current and previous library sizes for the core
8669 subsystem are shown below. These are the code and data sizes for the
8670 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8672 values do not include any ACPI driver or OSPM code. The debug version of
8674 code includes the debug output trace mechanism and has a much larger code
8675 and data size. Note that these values will vary depending on the
8677 of the compiler and the compiler options used during generation.
8680 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8681 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8683 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8684 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8687 2) iASL Compiler/Disassembler:
8689 Fixed a parse error during compilation of certain Switch/Case constructs.
8691 simplify the parse, the grammar now allows for multiple Default
8693 and this error is now detected and flagged during the analysis phase.
8695 Disassembler: The disassembly now includes the contents of the original
8696 table header within a comment at the start of the file. This includes the
8697 name and version of the original ASL compiler.
8699 ----------------------------------------
8700 17 November 2005. Summary of changes for version 20051117:
8702 1) ACPI CA Core Subsystem:
8704 Fixed a problem in the AML parser where the method thread count could be
8705 decremented below zero if any errors occurred during the method parse
8707 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8709 This also fixed a related regression with the mechanism that detects and
8710 corrects methods that cannot properly handle reentrancy (related to the
8711 deployment of the new OwnerId mechanism.)
8713 Eliminated the pre-parsing of control methods (to detect errors) during
8714 table load. Related to the problem above, this was causing unwind issues
8716 any errors occurred during the parse, and it seemed to be overkill. A
8718 load should not be aborted if there are problems with any single control
8719 method, thus rendering this feature rather pointless.
8721 Fixed a problem with the new table-driven resource manager where an
8723 buffer overflow could occur for small resource templates.
8725 Implemented a new external interface, AcpiGetVendorResource. This
8727 will find and return a vendor-defined resource descriptor within a _CRS
8729 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8732 Removed the length limit (200) on string objects as per the upcoming ACPI
8733 3.0A specification. This affects the following areas of the interpreter:
8735 any implicit conversion of a Buffer to a String, 2) a String object
8737 of the ASL Concatentate operator, 3) the String object result of the ASL
8740 Fixed a problem in the Windows OS interface layer (OSL) where a
8742 on a semaphore object would incorrectly timeout. This allows the
8743 multithreading features of the AcpiExec utility to work properly under
8746 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8747 the recently added file named "utresrc.c".
8749 Code and Data Size: The current and previous library sizes for the core
8750 subsystem are shown below. These are the code and data sizes for the
8751 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8753 values do not include any ACPI driver or OSPM code. The debug version of
8755 code includes the debug output trace mechanism and has a much larger code
8756 and data size. Note that these values will vary depending on the
8758 of the compiler and the compiler options used during generation.
8761 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8762 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8764 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8765 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8768 2) iASL Compiler/Disassembler:
8770 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8771 specification. For the iASL compiler, this means that string literals
8773 the source ASL can be of any length.
8775 Enhanced the listing output to dump the AML code for resource descriptors
8776 immediately after the ASL code for each descriptor, instead of in a block
8778 the end of the entire resource template.
8780 Enhanced the compiler debug output to dump the entire original parse tree
8781 constructed during the parse phase, before any transforms are applied to
8783 tree. The transformed tree is dumped also.
8785 ----------------------------------------
8786 02 November 2005. Summary of changes for version 20051102:
8788 1) ACPI CA Core Subsystem:
8790 Modified the subsystem initialization sequence to improve GPE support.
8792 GPE initialization has been split into two parts in order to defer
8794 of the _PRW methods (Power Resources for Wake) until after the hardware
8796 fully initialized and the SCI handler is installed. This allows the _PRW
8797 methods to access fields protected by the Global Lock. This will fix
8799 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8801 Converted the ACPI internal object disassemble and display code within
8803 AML debugger to fully table-driven operation, reducing code size and
8804 increasing maintainability.
8806 Fixed a regression with the ConcatenateResTemplate() ASL operator
8808 in the 20051021 release.
8810 Implemented support for "local" internal ACPI object types within the
8811 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8812 These local types include RegionFields, BankFields, IndexFields, Alias,
8816 Moved common AML resource handling code into a new file, "utresrc.c".
8818 code is shared by both the Resource Manager and the AML Debugger.
8820 Code and Data Size: The current and previous library sizes for the core
8821 subsystem are shown below. These are the code and data sizes for the
8822 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8824 values do not include any ACPI driver or OSPM code. The debug version of
8826 code includes the debug output trace mechanism and has a much larger code
8827 and data size. Note that these values will vary depending on the
8829 of the compiler and the compiler options used during generation.
8832 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8833 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8835 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8836 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8839 2) iASL Compiler/Disassembler:
8841 Fixed a problem with very large initializer lists (more than 4000
8843 for both Buffer and Package objects where the parse stack could overflow.
8845 Enhanced the pre-compile source code scan for non-ASCII characters to
8847 characters within comment fields. The scan is now always performed and is
8849 longer optional, detecting invalid characters within a source file
8850 immediately rather than during the parse phase or later.
8852 Enhanced the ASL grammar definition to force early reductions on all
8854 style grammar elements so that the overall parse stack usage is greatly
8855 reduced. This should improve performance and reduce the possibility of
8859 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8861 with the addition of a %expected statement, the compiler generates from
8862 source with no warnings.
8864 Fixed a possible segment fault in the disassembler if the input filename
8865 does not contain a "dot" extension (Thomas Renninger).
8867 ----------------------------------------
8868 21 October 2005. Summary of changes for version 20051021:
8870 1) ACPI CA Core Subsystem:
8872 Implemented support for the EM64T and other x86-64 processors. This
8873 essentially entails recognizing that these processors support non-aligned
8874 memory transfers. Previously, all 64-bit processors were assumed to lack
8875 hardware support for non-aligned transfers.
8877 Completed conversion of the Resource Manager to nearly full table-driven
8878 operation. Specifically, the resource conversion code (convert AML to
8879 internal format and the reverse) and the debug code to dump internal
8880 resource descriptors are fully table-driven, reducing code and data size
8882 improving maintainability.
8884 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8886 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8888 Alexey Starikovskiy)
8890 Implemented support within the resource conversion code for the Type-
8891 Specific byte within the various ACPI 3.0 *WordSpace macros.
8893 Fixed some issues within the resource conversion code for the type-
8895 flags for both Memory and I/O address resource descriptors. For Memory,
8896 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8897 TTP flags into two separate fields.
8899 Code and Data Size: The current and previous library sizes for the core
8900 subsystem are shown below. These are the code and data sizes for the
8901 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8903 values do not include any ACPI driver or OSPM code. The debug version of
8905 code includes the debug output trace mechanism and has a much larger code
8906 and data size. Note that these values will vary depending on the
8908 of the compiler and the compiler options used during generation.
8911 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8912 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8914 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8915 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8919 2) iASL Compiler/Disassembler:
8921 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8923 corresponding ResourceSource string was not also present in a resource
8924 descriptor declaration. This restriction caused problems with existing
8925 AML/ASL code that includes the Index byte without the string. When such
8927 was disassembled, it could not be compiled without modification. Further,
8928 the modified code created a resource template with a different size than
8930 original, breaking code that used fixed offsets into the resource
8934 Removed a recent feature of the disassembler to ignore a lone
8936 byte. This byte is now emitted if present so that the exact AML can be
8937 reproduced when the disassembled code is recompiled.
8939 Improved comments and text alignment for the resource descriptor code
8940 emitted by the disassembler.
8942 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8944 Register() resource descriptor.
8946 ----------------------------------------
8947 30 September 2005. Summary of changes for version 20050930:
8949 1) ACPI CA Core Subsystem:
8951 Completed a major overhaul of the Resource Manager code - specifically,
8952 optimizations in the area of the AML/internal resource conversion code.
8954 code has been optimized to simplify and eliminate duplicated code, CPU
8956 use has been decreased by optimizing function parameters and local
8957 variables, and naming conventions across the manager have been
8959 for clarity and ease of maintenance (this includes function, parameter,
8960 variable, and struct/typedef names.) The update may force changes in some
8961 driver code, depending on how resources are handled by the host OS.
8963 All Resource Manager dispatch and information tables have been moved to a
8964 single location for clarity and ease of maintenance. One new file was
8965 created, named "rsinfo.c".
8967 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8968 guarantee that the argument is not evaluated twice, making them less
8970 to macro side-effects. However, since there exists the possibility of
8971 additional stack use if a particular compiler cannot optimize them (such
8973 in the debug generation case), the original macros are optionally
8975 Note that some invocations of the return_VALUE macro may now cause size
8976 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8978 eliminate these. (From Randy Dunlap)
8980 Implemented a new mechanism to enable debug tracing for individual
8982 methods. A new external interface, AcpiDebugTrace, is provided to enable
8983 this mechanism. The intent is to allow the host OS to easily enable and
8984 disable tracing for problematic control methods. This interface can be
8985 easily exposed to a user or debugger interface if desired. See the file
8986 psxface.c for details.
8988 AcpiUtCallocate will now return a valid pointer if a length of zero is
8989 specified - a length of one is used and a warning is issued. This matches
8990 the behavior of AcpiUtAllocate.
8992 Code and Data Size: The current and previous library sizes for the core
8993 subsystem are shown below. These are the code and data sizes for the
8994 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8996 values do not include any ACPI driver or OSPM code. The debug version of
8998 code includes the debug output trace mechanism and has a much larger code
8999 and data size. Note that these values will vary depending on the
9001 of the compiler and the compiler options used during generation.
9004 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9005 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9007 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9008 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9011 2) iASL Compiler/Disassembler:
9013 A remark is issued if the effective compile-time length of a package or
9014 buffer is zero. Previously, this was a warning.
9016 ----------------------------------------
9017 16 September 2005. Summary of changes for version 20050916:
9019 1) ACPI CA Core Subsystem:
9021 Fixed a problem within the Resource Manager where support for the Generic
9022 Register descriptor was not fully implemented. This descriptor is now
9024 recognized, parsed, disassembled, and displayed.
9026 Completely restructured the Resource Manager code to utilize table-driven
9027 dispatch and lookup, eliminating many of the large switch() statements.
9029 reduces overall subsystem code size and code complexity. Affects the
9030 resource parsing and construction, disassembly, and debug dump output.
9032 Cleaned up and restructured the debug dump output for all resource
9033 descriptors. Improved readability of the output and reduced code size.
9035 Fixed a problem where changes to internal data structures caused the
9036 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
9038 Code and Data Size: The current and previous library sizes for the core
9039 subsystem are shown below. These are the code and data sizes for the
9040 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9042 values do not include any ACPI driver or OSPM code. The debug version of
9044 code includes the debug output trace mechanism and has a much larger code
9045 and data size. Note that these values will vary depending on the
9047 of the compiler and the compiler options used during generation.
9050 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9051 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9053 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9054 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9057 2) iASL Compiler/Disassembler:
9059 Updated the disassembler to automatically insert an EndDependentFn()
9061 into the ASL stream if this macro is missing in the original AML code,
9062 simplifying compilation of the resulting ASL module.
9064 Fixed a problem in the disassembler where a disassembled ResourceSource
9065 string (within a large resource descriptor) was not surrounded by quotes
9067 not followed by a comma, causing errors when the resulting ASL module was
9068 compiled. Also, escape sequences within a ResourceSource string are now
9069 handled correctly (especially "\\")
9071 ----------------------------------------
9072 02 September 2005. Summary of changes for version 20050902:
9074 1) ACPI CA Core Subsystem:
9076 Fixed a problem with the internal Owner ID allocation and deallocation
9077 mechanisms for control method execution and recursive method invocation.
9078 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
9079 messages seen on some systems. Recursive method invocation depth is
9080 currently limited to 255. (Alexey Starikovskiy)
9082 Completely eliminated all vestiges of support for the "module-level
9083 executable code" until this support is fully implemented and debugged.
9085 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
9086 some systems that invoke this support.
9088 Fixed a problem within the resource manager code where the transaction
9090 for a 64-bit address descriptor were handled incorrectly in the type-
9093 Consolidated duplicate code within the address descriptor resource
9095 code, reducing overall subsystem code size.
9097 Fixed a fault when using the AML debugger "disassemble" command to
9098 disassemble individual control methods.
9100 Removed references to the "release_current" directory within the Unix
9103 Code and Data Size: The current and previous core subsystem library sizes
9104 are shown below. These are the code and data sizes for the acpica.lib
9105 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
9106 include any ACPI driver or OSPM code. The debug version of the code
9108 the debug output trace mechanism and has a much larger code and data
9110 Note that these values will vary depending on the efficiency of the
9112 and the compiler options used during generation.
9115 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9116 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9118 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9119 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9122 2) iASL Compiler/Disassembler:
9124 Implemented an error check for illegal duplicate values in the interrupt
9126 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
9129 Implemented error checking for the Irq() and IrqNoFlags() macros to
9131 too many values in the interrupt list (16 max) and invalid values in the
9134 The maximum length string literal within an ASL file is now restricted to
9135 200 characters as per the ACPI specification.
9137 Fixed a fault when using the -ln option (generate namespace listing).
9139 Implemented an error check to determine if a DescriptorName within a
9140 resource descriptor has already been used within the current scope.
9142 ----------------------------------------
9143 15 August 2005. Summary of changes for version 20050815:
9145 1) ACPI CA Core Subsystem:
9147 Implemented a full bytewise compare to determine if a table load request
9149 attempting to load a duplicate table. The compare is performed if the
9151 signatures and table lengths match. This will allow different tables with
9152 the same OEM Table ID and revision to be loaded - probably against the
9154 specification, but discovered in the field nonetheless.
9156 Added the changes.txt logfile to each of the zipped release packages.
9158 Code and Data Size: Current and previous core subsystem library sizes are
9159 shown below. These are the code and data sizes for the acpica.lib
9161 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9162 any ACPI driver or OSPM code. The debug version of the code includes the
9163 debug output trace mechanism and has a much larger code and data size.
9165 that these values will vary depending on the efficiency of the compiler
9167 the compiler options used during generation.
9170 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9171 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9173 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9174 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9177 2) iASL Compiler/Disassembler:
9179 Fixed a problem where incorrect AML code could be generated for Package
9180 objects if optimization is disabled (via the -oa switch).
9182 Fixed a problem with where incorrect AML code is generated for variable-
9183 length packages when the package length is not specified and the number
9185 initializer values is greater than 255.
9188 ----------------------------------------
9189 29 July 2005. Summary of changes for version 20050729:
9191 1) ACPI CA Core Subsystem:
9193 Implemented support to ignore an attempt to install/load a particular
9195 table more than once. Apparently there exists BIOS code that repeatedly
9196 attempts to load the same SSDT upon certain events. With assistance from
9197 Venkatesh Pallipadi.
9199 Restructured the main interface to the AML parser in order to correctly
9200 handle all exceptional conditions. This will prevent leakage of the
9202 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
9204 machines. With assistance from Alexey Starikovskiy.
9206 Support for "module level code" has been disabled in this version due to
9208 number of issues that have appeared on various machines. The support can
9210 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
9211 compilation. When the issues are fully resolved, the code will be enabled
9215 Modified the internal functions for debug print support to define the
9216 FunctionName parameter as a (const char *) for compatibility with
9218 built-in macros such as __FUNCTION__, etc.
9220 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
9222 Implemented support to display an object count summary for the AML
9224 commands Object and Methods.
9226 Code and Data Size: Current and previous core subsystem library sizes are
9227 shown below. These are the code and data sizes for the acpica.lib
9229 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9230 any ACPI driver or OSPM code. The debug version of the code includes the
9231 debug output trace mechanism and has a much larger code and data size.
9233 that these values will vary depending on the efficiency of the compiler
9235 the compiler options used during generation.
9238 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9239 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9241 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9242 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9245 2) iASL Compiler/Disassembler:
9247 Fixed a regression that appeared in the 20050708 version of the compiler
9248 where an error message was inadvertently emitted for invocations of the
9250 reserved control method.
9252 ----------------------------------------
9253 08 July 2005. Summary of changes for version 20050708:
9255 1) ACPI CA Core Subsystem:
9257 The use of the CPU stack in the debug version of the subsystem has been
9258 considerably reduced. Previously, a debug structure was declared in every
9259 function that used the debug macros. This structure has been removed in
9260 favor of declaring the individual elements as parameters to the debug
9261 functions. This reduces the cumulative stack use during nested execution
9263 ACPI function calls at the cost of a small increase in the code size of
9265 debug version of the subsystem. With assistance from Alexey Starikovskiy
9269 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
9270 headers to define a macro that will return the current function name at
9271 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
9273 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
9274 compiler-dependent header, the function name is saved on the CPU stack
9276 pointer per function.) This mechanism is used because apparently there
9277 exists no standard ANSI-C defined macro that that returns the function
9280 Redesigned and reimplemented the "Owner ID" mechanism used to track
9281 namespace objects created/deleted by ACPI tables and control method
9282 execution. A bitmap is now used to allocate and free the IDs, thus
9284 the wraparound problem present in the previous implementation. The size
9286 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
9289 Removed the UINT32_BIT and UINT16_BIT types that were used for the
9291 flag definitions within the headers for the predefined ACPI tables. These
9292 have been replaced by UINT8_BIT in order to increase the code portability
9294 the subsystem. If the use of UINT8 remains a problem, we may be forced to
9295 eliminate bitfields entirely because of a lack of portability.
9297 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
9299 is a frequently used function and this improvement increases the
9301 of the entire subsystem (Alexey Starikovskiy).
9303 Fixed several possible memory leaks and the inverse - premature object
9304 deletion (Alexey Starikovskiy).
9306 Code and Data Size: Current and previous core subsystem library sizes are
9307 shown below. These are the code and data sizes for the acpica.lib
9309 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9310 any ACPI driver or OSPM code. The debug version of the code includes the
9311 debug output trace mechanism and has a much larger code and data size.
9313 that these values will vary depending on the efficiency of the compiler
9315 the compiler options used during generation.
9318 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9319 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9321 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9322 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9324 ----------------------------------------
9325 24 June 2005. Summary of changes for version 20050624:
9327 1) ACPI CA Core Subsystem:
9329 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
9330 the host-defined cache object. This allows the OSL implementation to
9332 and type this object in any manner desired, simplifying the OSL
9333 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
9334 Linux, and should be defined in the OS-specific header file for other
9335 operating systems as required.
9337 Changed the interface to AcpiOsAcquireObject to directly return the
9338 requested object as the function return (instead of ACPI_STATUS.) This
9339 change was made for performance reasons, since this is the purpose of the
9340 interface in the first place. AcpiOsAcquireObject is now similar to the
9341 AcpiOsAllocate interface.
9343 Implemented a new AML debugger command named Businfo. This command
9345 information about all devices that have an associate _PRT object. The
9347 _HID, _UID, and _CID are displayed for these devices.
9349 Modified the initialization sequence in AcpiInitializeSubsystem to call
9351 OSL interface AcpiOslInitialize first, before any local initialization.
9353 change was required because the global initialization now calls OSL
9356 Enhanced the Dump command to display the entire contents of Package
9358 (including all sub-objects and their values.)
9360 Restructured the code base to split some files because of size and/or
9361 because the code logically belonged in a separate file. New files are
9363 below. All makefiles and project files included in the ACPI CA release
9366 utilities/utcache.c /* Local cache interfaces */
9367 utilities/utmutex.c /* Local mutex support */
9368 utilities/utstate.c /* State object support */
9369 interpreter/parser/psloop.c /* Main AML parse loop */
9371 Code and Data Size: Current and previous core subsystem library sizes are
9372 shown below. These are the code and data sizes for the acpica.lib
9374 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9375 any ACPI driver or OSPM code. The debug version of the code includes the
9376 debug output trace mechanism and has a much larger code and data size.
9378 that these values will vary depending on the efficiency of the compiler
9380 the compiler options used during generation.
9383 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9384 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9386 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9387 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9390 2) iASL Compiler/Disassembler:
9392 Fixed a regression introduced in version 20050513 where the use of a
9394 object within a Case() statement caused a compile time exception. The
9395 original behavior has been restored (a Match() operator is emitted.)
9397 ----------------------------------------
9398 17 June 2005. Summary of changes for version 20050617:
9400 1) ACPI CA Core Subsystem:
9402 Moved the object cache operations into the OS interface layer (OSL) to
9404 the host OS to handle these operations if desired (for example, the Linux
9405 OSL will invoke the slab allocator). This support is optional; the
9407 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
9409 code in the ACPI CA core. The new OSL interfaces are shown below. See
9410 utalloc.c for an example implementation, and acpiosxf.h for the exact
9411 interface definitions. With assistance from Alexey Starikovskiy.
9418 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
9420 and restore a flags parameter. This fits better with many OS lock models.
9421 Note: the current execution state (interrupt handler or not) is no longer
9422 passed to these interfaces. If necessary, the OSL must determine this
9424 by itself, a simple and fast operation. With assistance from Alexey
9427 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
9428 present if the revision of the RSDP was 2 or greater. According to the
9430 specification, the XSDT is optional in all cases, and the table manager
9431 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
9432 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
9436 Fixed an interpreter problem with the Mid() operator in the case of an
9438 string where the resulting output string is of zero length. It now
9440 returns a valid, null terminated string object instead of a string object
9441 with a null pointer.
9443 Fixed a problem with the control method argument handling to allow a
9445 to an Arg object that already contains an object of type Device. The
9447 object is now correctly overwritten. Previously, an error was returned.
9450 Enhanced the debugger Find command to emit object values in addition to
9452 found object pathnames. The output format is the same as the dump
9456 Enhanced the debugger Set command. It now has the ability to set the
9458 of any Named integer object in the namespace (Previously, only method
9460 and args could be set.)
9462 Code and Data Size: Current and previous core subsystem library sizes are
9463 shown below. These are the code and data sizes for the acpica.lib
9465 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9466 any ACPI driver or OSPM code. The debug version of the code includes the
9467 debug output trace mechanism and has a much larger code and data size.
9469 that these values will vary depending on the efficiency of the compiler
9471 the compiler options used during generation.
9474 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9475 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9477 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9478 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9481 2) iASL Compiler/Disassembler:
9483 Fixed a regression in the disassembler where if/else/while constructs
9485 output incorrectly. This problem was introduced in the previous release
9486 (20050526). This problem also affected the single-step disassembly in the
9489 Fixed a problem where compiling the reserved _OSI method would randomly
9491 rarely) produce compile errors.
9493 Enhanced the disassembler to emit compilable code in the face of
9495 AML resource descriptors. If the optional ResourceSourceIndex is present,
9496 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
9497 disassembly. Otherwise, the resulting code cannot be compiled without
9500 ----------------------------------------
9501 26 May 2005. Summary of changes for version 20050526:
9503 1) ACPI CA Core Subsystem:
9505 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
9506 the module level (not within a control method.) These opcodes are
9508 exactly once at the time the table is loaded. This type of code was legal
9510 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
9512 order to provide backwards compatibility with earlier BIOS
9514 This eliminates the "Encountered executable code at module level" warning
9515 that was previously generated upon detection of such code.
9517 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
9518 inadvertently be generated during the lookup of namespace objects in the
9519 second pass parse of ACPI tables and control methods. It appears that
9521 problem could occur during the resolution of forward references to
9525 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
9526 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
9527 allows the deadlock detection debug code to be compiled out in the normal
9528 case, improving mutex performance (and overall subsystem performance)
9531 Implemented a handful of miscellaneous fixes for possible memory leaks on
9532 error conditions and error handling control paths. These fixes were
9533 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
9535 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
9537 to prevent a fault in this error case.
9539 Code and Data Size: Current and previous core subsystem library sizes are
9540 shown below. These are the code and data sizes for the acpica.lib
9542 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9543 any ACPI driver or OSPM code. The debug version of the code includes the
9544 debug output trace mechanism and has a much larger code and data size.
9546 that these values will vary depending on the efficiency of the compiler
9548 the compiler options used during generation.
9551 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9552 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9554 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9555 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9558 2) iASL Compiler/Disassembler:
9560 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
9561 the module level (not within a control method.) These operators will be
9562 executed once at the time the table is loaded. This type of code was
9564 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
9565 compiler in order to provide backwards compatibility with earlier BIOS
9569 The ACPI integer width (specified via the table revision ID or the -r
9570 override, 32 or 64 bits) is now used internally during compile-time
9572 folding to ensure that constants are truncated to 32 bits if necessary.
9573 Previously, the revision ID value was only emitted in the AML table
9576 An error message is now generated for the Mutex and Method operators if
9578 SyncLevel parameter is outside the legal range of 0 through 15.
9580 Fixed a problem with the Method operator ParameterTypes list handling
9582 3.0). Previously, more than 2 types or 2 arguments generated a syntax
9584 The actual underlying implementation of method argument typechecking is
9585 still under development, however.
9587 ----------------------------------------
9588 13 May 2005. Summary of changes for version 20050513:
9590 1) ACPI CA Core Subsystem:
9592 Implemented support for PCI Express root bridges -- added support for
9594 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
9596 The interpreter now automatically truncates incoming 64-bit constants to
9598 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
9600 also affects the iASL compiler constant folding. (Note: as per below, the
9601 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
9603 Fixed a problem where string and buffer objects with "static" pointers
9604 (pointers to initialization data within an ACPI table) were not handled
9605 consistently. The internal object copy operation now always copies the
9607 to a newly allocated buffer, regardless of whether the source object is
9610 Fixed a problem with the FromBCD operator where an implicit result
9611 conversion was improperly performed while storing the result to the
9613 operand. Since this is an "explicit conversion" operator, the implicit
9614 conversion should never be performed on the output.
9616 Fixed a problem with the CopyObject operator where a copy to an existing
9617 named object did not always completely overwrite the existing object
9619 at name. Specifically, a buffer-to-buffer copy did not delete the
9623 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9625 structs for consistency.
9627 Code and Data Size: Current and previous core subsystem library sizes are
9628 shown below. These are the code and data sizes for the acpica.lib
9630 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9631 any ACPI driver or OSPM code. The debug version of the code includes the
9632 debug output trace mechanism and has a much larger code and data size.
9634 that these values will vary depending on the efficiency of the compiler
9636 the compiler options used during generation.
9639 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9640 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9641 Current Release: (Same sizes)
9642 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9643 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9646 2) iASL Compiler/Disassembler:
9648 The compiler now emits a warning if an attempt is made to generate a 64-
9650 integer constant from within a 32-bit ACPI table (Revision < 2). The
9652 is truncated to 32 bits.
9654 Fixed a problem with large package objects: if the static length of the
9655 package is greater than 255, the "variable length package" opcode is
9656 emitted. Previously, this caused an error. This requires an update to the
9657 ACPI spec, since it currently (incorrectly) states that packages larger
9659 255 elements are not allowed.
9661 The disassembler now correctly handles variable length packages and
9663 larger than 255 elements.
9665 ----------------------------------------
9666 08 April 2005. Summary of changes for version 20050408:
9668 1) ACPI CA Core Subsystem:
9670 Fixed three cases in the interpreter where an "index" argument to an ASL
9671 function was still (internally) 32 bits instead of the required 64 bits.
9672 This was the Index argument to the Index, Mid, and Match operators.
9674 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9676 not a POSIX-defined function and not present in most kernel-level C
9677 libraries. All references to the C library strupr function have been
9681 Completed the deployment of static functions/prototypes. All prototypes
9683 the static attribute have been moved from the headers to the owning C
9686 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9687 utility). This option allows the utility to extract individual ACPI
9689 from the output of AcpiDmp. It provides the same functionality of the
9690 acpixtract.pl perl script without the worry of setting the correct perl
9691 options. AcpiBin runs on Windows and has not yet been generated/validated
9693 the Linux/Unix environment (but should be soon).
9695 Updated and fixed the table dump option for AcpiBin (-d). This option
9696 converts a single ACPI table to a hex/ascii file, similar to the output
9700 Code and Data Size: Current and previous core subsystem library sizes are
9701 shown below. These are the code and data sizes for the acpica.lib
9703 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9704 any ACPI driver or OSPM code. The debug version of the code includes the
9705 debug output trace mechanism and has a much larger code and data size.
9707 that these values will vary depending on the efficiency of the compiler
9709 the compiler options used during generation.
9712 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9713 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9715 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9716 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9719 2) iASL Compiler/Disassembler:
9721 Disassembler fix: Added a check to ensure that the table length found in
9723 ACPI table header within the input file is not longer than the actual
9725 file size. This indicates some kind of file or table corruption.
9727 ----------------------------------------
9728 29 March 2005. Summary of changes for version 20050329:
9730 1) ACPI CA Core Subsystem:
9732 An error is now generated if an attempt is made to create a Buffer Field
9734 length zero (A CreateField with a length operand of zero.)
9736 The interpreter now issues a warning whenever executable code at the
9738 level is detected during ACPI table load. This will give some idea of the
9739 prevalence of this type of code.
9741 Implemented support for references to named objects (other than control
9742 methods) within package objects.
9744 Enhanced package object output for the debug object. Package objects are
9746 completely dumped, showing all elements.
9748 Enhanced miscellaneous object output for the debug object. Any object can
9749 now be written to the debug object (for example, a device object can be
9750 written, and the type of the object will be displayed.)
9752 The "static" qualifier has been added to all local functions across both
9754 core subsystem and the iASL compiler.
9756 The number of "long" lines (> 80 chars) within the source has been
9757 significantly reduced, by about 1/3.
9759 Cleaned up all header files to ensure that all CA/iASL functions are
9760 prototyped (even static functions) and the formatting is consistent.
9762 Two new header files have been added, acopcode.h and acnames.h.
9764 Removed several obsolete functions that were no longer used.
9766 Code and Data Size: Current and previous core subsystem library sizes are
9767 shown below. These are the code and data sizes for the acpica.lib
9769 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9770 any ACPI driver or OSPM code. The debug version of the code includes the
9771 debug output trace mechanism and has a much larger code and data size.
9773 that these values will vary depending on the efficiency of the compiler
9775 the compiler options used during generation.
9778 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9779 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9781 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9782 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9786 2) iASL Compiler/Disassembler:
9788 Fixed a problem with the resource descriptor generation/support. For the
9789 ResourceSourceIndex and the ResourceSource fields, both must be present,
9791 both must be not present - can't have one without the other.
9793 The compiler now returns non-zero from the main procedure if any errors
9795 occurred during the compilation.
9798 ----------------------------------------
9799 09 March 2005. Summary of changes for version 20050309:
9801 1) ACPI CA Core Subsystem:
9803 The string-to-buffer implicit conversion code has been modified again
9805 a change to the ACPI specification. In order to match the behavior of
9807 other major ACPI implementation, the target buffer is no longer truncated
9809 the source string is smaller than an existing target buffer. This change
9810 requires an update to the ACPI spec, and should eliminate the recent
9811 AE_AML_BUFFER_LIMIT issues.
9813 The "implicit return" support was rewritten to a new algorithm that
9815 the general case. Rather than attempt to determine when a method is about
9817 exit, the result of every ASL operator is saved momentarily until the
9819 next ASL operator is executed. Therefore, no matter how the method exits,
9820 there will always be a saved implicit return value. This feature is only
9821 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9823 AE_AML_NO_RETURN_VALUE errors when enabled.
9825 Implemented implicit conversion support for the predicate (operand) of
9827 If, Else, and While operators. String and Buffer arguments are
9829 converted to Integers.
9831 Changed the string-to-integer conversion behavior to match the new ACPI
9832 errata: "If no integer object exists, a new integer is created. The ASCII
9833 string is interpreted as a hexadecimal constant. Each string character is
9834 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9835 with the first character as the most significant digit, and ending with
9837 first non-hexadecimal character or end-of-string." This means that the
9839 non-hex character terminates the conversion and this is the code that was
9842 Fixed a problem where the ObjectType operator would fail (fault) when
9844 on an Index of a Package which pointed to a null package element. The
9845 operator now properly returns zero (Uninitialized) in this case.
9847 Fixed a problem where the While operator used excessive memory by not
9848 properly popping the result stack during execution. There was no memory
9850 after execution, however. (Code provided by Valery Podrezov.)
9852 Fixed a problem where references to control methods within Package
9854 caused the method to be invoked, instead of producing a reference object
9855 pointing to the method.
9857 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9859 improve performance and reduce code size. (Code provided by Alexey
9862 Code and Data Size: Current and previous core subsystem library sizes are
9863 shown below. These are the code and data sizes for the acpica.lib
9865 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9866 any ACPI driver or OSPM code. The debug version of the code includes the
9867 debug output trace mechanism and has a much larger code and data size.
9869 that these values will vary depending on the efficiency of the compiler
9871 the compiler options used during generation.
9874 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9875 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9877 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9878 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9881 2) iASL Compiler/Disassembler:
9883 Fixed a problem with the Return operator with no arguments. Since the AML
9884 grammar for the byte encoding requires an operand for the Return opcode,
9886 compiler now emits a Return(Zero) for this case. An ACPI specification
9887 update has been written for this case.
9889 For tables other than the DSDT, namepath optimization is automatically
9890 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9892 compiler has no knowledge of where, and thus cannot optimize namepaths.
9894 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9895 inadvertently omitted from the ACPI specification, and will require an
9898 The source file scan for ASCII characters is now optional (-a). This
9900 was made because some vendors place non-ascii characters within comments.
9901 However, the scan is simply a brute-force byte compare to ensure all
9902 characters in the file are in the range 0x00 to 0x7F.
9904 Fixed a problem with the CondRefOf operator where the compiler was
9905 inappropriately checking for the existence of the target. Since the point
9907 the operator is to check for the existence of the target at run-time, the
9908 compiler no longer checks for the target existence.
9910 Fixed a problem where errors generated from the internal AML interpreter
9911 during constant folding were not handled properly, causing a fault.
9913 Fixed a problem with overly aggressive range checking for the Stall
9914 operator. The valid range (max 255) is now only checked if the operand is
9916 type Integer. All other operand types cannot be statically checked.
9918 Fixed a problem where control method references within the RefOf,
9920 and ObjectType operators were not treated properly. They are now treated
9922 actual references, not method invocations.
9924 Fixed and enhanced the "list namespace" option (-ln). This option was
9926 a number of releases ago.
9928 Improved error handling for the Field, IndexField, and BankField
9930 The compiler now cleanly reports and recovers from errors in the field
9931 component (FieldUnit) list.
9933 Fixed a disassembler problem where the optional ResourceDescriptor fields
9934 TRS and TTP were not always handled correctly.
9936 Disassembler - Comments in output now use "//" instead of "/*"
9938 ----------------------------------------
9939 28 February 2005. Summary of changes for version 20050228:
9941 1) ACPI CA Core Subsystem:
9943 Fixed a problem where the result of an Index() operator (an object
9944 reference) must increment the reference count on the target object for
9946 life of the object reference.
9948 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9949 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9951 resource descriptors.
9953 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9954 Space Descriptor" string, indicating interpreter support for the
9958 Implemented header support for the new ACPI 3.0 FADT flag bits.
9960 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9962 status/enable registers.
9964 Updated header support for the MADT processor local Apic struct and MADT
9965 platform interrupt source struct for new ACPI 3.0 fields.
9967 Implemented header support for the SRAT and SLIT ACPI tables.
9969 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9973 Code and Data Size: Current and previous core subsystem library sizes are
9974 shown below. These are the code and data sizes for the acpica.lib
9976 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9977 any ACPI driver or OSPM code. The debug version of the code includes the
9978 debug output trace mechanism and has a much larger code and data size.
9980 that these values will vary depending on the efficiency of the compiler
9982 the compiler options used during generation.
9985 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9986 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9988 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9989 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9992 2) iASL Compiler/Disassembler:
9994 Fixed a problem with the internal 64-bit String-to-integer conversion
9996 strings less than two characters long.
9998 Fixed a problem with constant folding where the result of the Index()
9999 operator can not be considered a constant. This means that Index() cannot
10001 a type3 opcode and this will require an update to the ACPI specification.
10003 Disassembler: Implemented support for the TTP, MTP, and TRS resource
10004 descriptor fields. These fields were inadvertently ignored and not output
10006 the disassembly of the resource descriptor.
10009 ----------------------------------------
10010 11 February 2005. Summary of changes for version 20050211:
10012 1) ACPI CA Core Subsystem:
10014 Implemented ACPI 3.0 support for implicit conversion within the Match()
10015 operator. MatchObjects can now be of type integer, buffer, or string
10017 of just type integer. Package elements are implicitly converted to the
10019 of the MatchObject. This change aligns the behavior of Match() with the
10020 behavior of the other logical operators (LLess(), etc.) It also requires
10022 errata change to the ACPI specification as this support was intended for
10023 ACPI 3.0, but was inadvertently omitted.
10025 Fixed a problem with the internal implicit "to buffer" conversion.
10027 that are converted to buffers will cause buffer truncation if the string
10029 smaller than the target buffer. Integers that are converted to buffers
10031 not cause buffer truncation, only zero extension (both as per the ACPI
10032 spec.) The problem was introduced when code was added to truncate the
10033 buffer, but this should not be performed in all cases, only the string
10036 Fixed a problem with the Buffer and Package operators where the
10038 would get confused if two such operators were used as operands to an ASL
10039 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
10040 stack was not being popped after the execution of these operators,
10042 in an AE_NO_RETURN_VALUE exception.
10044 Fixed a problem with constructs of the form Store(Index(...),...). The
10045 reference object returned from Index was inadvertently resolved to an
10047 value. This problem was introduced in version 20050114 when the behavior
10049 Store() was modified to restrict the object types that can be used as the
10050 source operand (to match the ACPI specification.)
10052 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
10054 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
10056 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
10058 Code and Data Size: Current and previous core subsystem library sizes are
10059 shown below. These are the code and data sizes for the acpica.lib
10061 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10062 any ACPI driver or OSPM code. The debug version of the code includes the
10063 debug output trace mechanism and has a much larger code and data size.
10065 that these values will vary depending on the efficiency of the compiler
10067 the compiler options used during generation.
10070 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10071 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10073 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10074 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10077 2) iASL Compiler/Disassembler:
10079 Fixed a code generation problem in the constant folding optimization code
10080 where incorrect code was generated if a constant was reduced to a buffer
10081 object (i.e., a reduced type 5 opcode.)
10083 Fixed a typechecking problem for the ToBuffer operator. Caused by an
10084 incorrect return type in the internal opcode information table.
10086 ----------------------------------------
10087 25 January 2005. Summary of changes for version 20050125:
10089 1) ACPI CA Core Subsystem:
10091 Fixed a recently introduced problem with the Global Lock where the
10092 underlying semaphore was not created. This problem was introduced in
10093 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
10094 Acquire() operation on _GL.
10096 The local object cache is now optional, and is disabled by default. Both
10097 AcpiExec and the iASL compiler enable the cache because they run in user
10098 mode and this enhances their performance. #define
10099 ACPI_ENABLE_OBJECT_CACHE
10100 to enable the local cache.
10102 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
10104 optional "implicit return" support where an error was returned if no
10106 object was expected, but one was implicitly returned. AE_OK is now
10108 in this case and the implicitly returned object is deleted.
10109 AcpiUtEvaluateObject is only occasionally used, and only to execute
10111 methods such as _STA and _INI where the return type is known up front.
10113 Fixed a few issues with the internal convert-to-integer code. It now
10115 an error if an attempt is made to convert a null string, a string of only
10116 blanks/tabs, or a zero-length buffer. This affects both implicit
10118 and explicit conversion via the ToInteger() operator.
10120 The internal debug code in AcpiUtAcquireMutex has been commented out. It
10122 not needed for normal operation and should increase the performance of
10124 entire subsystem. The code remains in case it is needed for debug
10128 The AcpiExec source and makefile are included in the Unix/Linux package
10132 Code and Data Size: Current and previous core subsystem library sizes are
10133 shown below. These are the code and data sizes for the acpica.lib
10135 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10136 any ACPI driver or OSPM code. The debug version of the code includes the
10137 debug output trace mechanism and has a much larger code and data size.
10139 that these values will vary depending on the efficiency of the compiler
10141 the compiler options used during generation.
10144 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10145 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10147 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10148 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10150 2) iASL Compiler/Disassembler:
10152 Switch/Case support: A warning is now issued if the type of the Switch
10154 cannot be determined at compile time. For example, Switch(Arg0) will
10155 generate the warning, and the type is assumed to be an integer. As per
10157 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
10161 Switch/Case support: Implemented support for buffer and string objects as
10162 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
10163 buffers and strings.
10165 Switch/Case support: The emitted code for the LEqual() comparisons now
10167 the switch value as the first operand, not the second. The case value is
10169 the second operand, and this allows the case value to be implicitly
10170 converted to the type of the switch value, not the other way around.
10172 Switch/Case support: Temporary variables are now emitted immediately
10174 the control method, not at the global level. This means that there are
10176 36 temps available per-method, not 36 temps per-module as was the case
10178 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
10180 ----------------------------------------
10181 14 January 2005. Summary of changes for version 20050114:
10183 Added 2005 copyright to all module headers. This affects every module in
10184 the core subsystem, iASL compiler, and the utilities.
10186 1) ACPI CA Core Subsystem:
10188 Fixed an issue with the String-to-Buffer conversion code where the string
10189 null terminator was not included in the buffer after conversion, but
10191 is existing ASL that assumes the string null terminator is included. This
10193 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
10194 introduced in the previous version when the code was updated to correctly
10195 set the converted buffer size as per the ACPI specification. The ACPI
10197 is ambiguous and will be updated to specify that the null terminator must
10199 included in the converted buffer. This also affects the ToBuffer() ASL
10202 Fixed a problem with the Mid() ASL/AML operator where it did not work
10203 correctly on Buffer objects. Newly created sub-buffers were not being
10208 Fixed a problem in AcpiTbFindTable where incorrect string compares were
10209 performed on the OemId and OemTableId table header fields. These fields
10211 not null terminated, so strncmp is now used instead of strcmp.
10213 Implemented a restriction on the Store() ASL/AML operator to align the
10214 behavior with the ACPI specification. Previously, any object could be
10216 as the source operand. Now, the only objects that may be used are
10218 Buffers, Strings, Packages, Object References, and DDB Handles. If
10219 necessary, the original behavior can be restored by enabling the
10220 EnableInterpreterSlack flag.
10222 Enhanced the optional "implicit return" support to allow an implicit
10224 value from methods that are invoked externally via the AcpiEvaluateObject
10225 interface. This enables implicit returns from the _STA and _INI methods,
10228 Changed the Revision() ASL/AML operator to return the current version of
10230 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
10232 the supported ACPI version (This is the function of the _REV method).
10234 Updated the _REV predefined method to return the currently supported
10238 Implemented batch mode option for the AcpiExec utility (-b).
10240 Code and Data Size: Current and previous core subsystem library sizes are
10241 shown below. These are the code and data sizes for the acpica.lib
10243 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10244 any ACPI driver or OSPM code. The debug version of the code includes the
10245 debug output trace mechanism and has a much larger code and data size.
10247 that these values will vary depending on the efficiency of the compiler
10249 the compiler options used during generation.
10252 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10253 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10255 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10256 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10258 ----------------------------------------
10259 10 December 2004. Summary of changes for version 20041210:
10261 ACPI 3.0 support is nearing completion in both the iASL compiler and the
10262 ACPI CA core subsystem.
10264 1) ACPI CA Core Subsystem:
10266 Fixed a problem in the ToDecimalString operator where the resulting
10268 length was incorrectly calculated. The length is now calculated exactly,
10269 eliminating incorrect AE_STRING_LIMIT exceptions.
10271 Fixed a problem in the ToHexString operator to allow a maximum 200
10273 string to be produced.
10275 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
10277 routine where the length of the resulting buffer was not truncated to the
10278 new size (if the target buffer already existed).
10280 Code and Data Size: Current and previous core subsystem library sizes are
10281 shown below. These are the code and data sizes for the acpica.lib
10283 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10284 any ACPI driver or OSPM code. The debug version of the code includes the
10285 debug output trace mechanism and has a much larger code and data size.
10287 that these values will vary depending on the efficiency of the compiler
10289 the compiler options used during generation.
10292 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10293 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10295 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10296 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10299 2) iASL Compiler/Disassembler:
10301 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
10302 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
10303 Includes support in the disassembler.
10305 Implemented support for the new (ACPI 3.0) parameter to the Register
10309 Fixed a problem where the _HE resource name for the Interrupt macro was
10310 referencing bit 0 instead of bit 1.
10312 Implemented check for maximum 255 interrupts in the Interrupt macro.
10314 Fixed a problem with the predefined resource descriptor names where
10315 incorrect AML code was generated if the offset within the resource buffer
10316 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
10317 but did not update the surrounding package lengths.
10319 Changes to the Dma macro: All channels within the channel list must be
10321 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
10322 optional (default is BusMaster).
10324 Implemented check for maximum 7 data bytes for the VendorShort macro.
10326 The ReadWrite parameter is now optional for the Memory32 and similar
10329 ----------------------------------------
10330 03 December 2004. Summary of changes for version 20041203:
10332 1) ACPI CA Core Subsystem:
10334 The low-level field insertion/extraction code (exfldio) has been
10336 rewritten to eliminate unnecessary complexity, bugs, and boundary
10339 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
10341 operators where the input operand could be inadvertently deleted if no
10342 conversion was necessary (e.g., if the input to ToInteger was an Integer
10345 Fixed a problem with the ToDecimalString and ToHexString where an
10347 exception code was returned if the resulting string would be > 200 chars.
10348 AE_STRING_LIMIT is now returned.
10350 Fixed a problem with the Concatenate operator where AE_OK was always
10351 returned, even if the operation failed.
10353 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
10354 semaphores to be allocated.
10356 Code and Data Size: Current and previous core subsystem library sizes are
10357 shown below. These are the code and data sizes for the acpica.lib
10359 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10360 any ACPI driver or OSPM code. The debug version of the code includes the
10361 debug output trace mechanism and has a much larger code and data size.
10363 that these values will vary depending on the efficiency of the compiler
10365 the compiler options used during generation.
10368 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10369 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10371 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10372 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10375 2) iASL Compiler/Disassembler:
10377 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
10378 recently introduced in 20041119.
10380 Fixed a problem with the ToUUID macro where the upper nybble of each
10382 byte was inadvertently set to zero.
10384 ----------------------------------------
10385 19 November 2004. Summary of changes for version 20041119:
10387 1) ACPI CA Core Subsystem:
10389 Fixed a problem in the internal ConvertToInteger routine where new
10391 were not truncated to 32 bits for 32-bit ACPI tables. This routine
10393 buffers and strings to integers.
10395 Implemented support to store a value to an Index() on a String object.
10397 is an ACPI 2.0 feature that had not yet been implemented.
10399 Implemented new behavior for storing objects to individual package
10401 (via the Index() operator). The previous behavior was to invoke the
10403 conversion rules if an object was already present at the index. The new
10404 behavior is to simply delete any existing object and directly store the
10406 object. Although the ACPI specification seems unclear on this subject,
10408 ACPI implementations behave in this manner. (This is the root of the
10409 AE_BAD_HEX_CONSTANT issue.)
10411 Modified the RSDP memory scan mechanism to support the extended checksum
10413 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
10414 RSDP signature is found with a valid checksum.
10416 Code and Data Size: Current and previous core subsystem library sizes are
10417 shown below. These are the code and data sizes for the acpica.lib
10419 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10420 any ACPI driver or OSPM code. The debug version of the code includes the
10421 debug output trace mechanism and has a much larger code and data size.
10423 that these values will vary depending on the efficiency of the compiler
10425 the compiler options used during generation.
10428 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10429 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10431 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10432 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10435 2) iASL Compiler/Disassembler:
10437 Fixed a missing semicolon in the aslcompiler.y file.
10439 ----------------------------------------
10440 05 November 2004. Summary of changes for version 20041105:
10442 1) ACPI CA Core Subsystem:
10444 Implemented support for FADT revision 2. This was an interim table
10446 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
10448 Implemented optional support to allow uninitialized LocalX and ArgX
10449 variables in a control method. The variables are initialized to an
10451 object with a value of zero. This support is enabled by setting the
10452 AcpiGbl_EnableInterpreterSlack flag to TRUE.
10454 Implemented support for Integer objects for the SizeOf operator. Either
10456 or 8 is returned, depending on the current integer size (32-bit or 64-
10458 depending on the parent table revision).
10460 Fixed a problem in the implementation of the SizeOf and ObjectType
10462 where the operand was resolved to a value too early, causing incorrect
10463 return values for some objects.
10465 Fixed some possible memory leaks during exceptional conditions.
10467 Code and Data Size: Current and previous core subsystem library sizes are
10468 shown below. These are the code and data sizes for the acpica.lib
10470 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10471 any ACPI driver or OSPM code. The debug version of the code includes the
10472 debug output trace mechanism and has a much larger code and data size.
10474 that these values will vary depending on the efficiency of the compiler
10476 the compiler options used during generation.
10479 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10480 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10482 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10483 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10486 2) iASL Compiler/Disassembler:
10488 Implemented support for all ACPI 3.0 reserved names and methods.
10490 Implemented all ACPI 3.0 grammar elements in the front-end, including
10491 support for semicolons.
10493 Implemented the ACPI 3.0 Function() and ToUUID() macros
10495 Fixed a problem in the disassembler where a Scope() operator would not be
10496 emitted properly if the target of the scope was in another table.
10498 ----------------------------------------
10499 15 October 2004. Summary of changes for version 20041015:
10501 Note: ACPI CA is currently undergoing an in-depth and complete formal
10502 evaluation to test/verify the following areas. Other suggestions are
10503 welcome. This will result in an increase in the frequency of releases and
10504 the number of bug fixes in the next few months.
10505 - Functional tests for all ASL/AML operators
10506 - All implicit/explicit type conversions
10507 - Bit fields and operation regions
10508 - 64-bit math support and 32-bit-only "truncated" math support
10509 - Exceptional conditions, both compiler and interpreter
10510 - Dynamic object deletion and memory leaks
10511 - ACPI 3.0 support when implemented
10512 - External interfaces to the ACPI subsystem
10515 1) ACPI CA Core Subsystem:
10517 Fixed two alignment issues on 64-bit platforms - within debug statements
10519 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
10521 field within the non-aligned ACPI generic address structure.
10523 Fixed a problem in the Increment and Decrement operators where incorrect
10524 operand resolution could result in the inadvertent modification of the
10525 original integer when the integer is passed into another method as an
10526 argument and the arg is then incremented/decremented.
10528 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
10530 BCD number were truncated during conversion.
10532 Fixed a problem in the ToDecimal operator where the length of the
10534 string could be set incorrectly too long if the input operand was a
10538 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
10540 within a buffer would prematurely terminate a compare between buffer
10543 Added a check for string overflow (>200 characters as per the ACPI
10544 specification) during the Concatenate operator with two string operands.
10546 Code and Data Size: Current and previous core subsystem library sizes are
10547 shown below. These are the code and data sizes for the acpica.lib
10549 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10550 any ACPI driver or OSPM code. The debug version of the code includes the
10551 debug output trace mechanism and has a much larger code and data size.
10553 that these values will vary depending on the efficiency of the compiler
10555 the compiler options used during generation.
10558 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10559 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10561 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10562 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10566 2) iASL Compiler/Disassembler:
10568 Allow the use of the ObjectType operator on uninitialized Locals and Args
10569 (returns 0 as per the ACPI specification).
10571 Fixed a problem where the compiler would fault if there was a syntax
10573 in the FieldName of all of the various CreateXXXField operators.
10575 Disallow the use of lower case letters within the EISAID macro, as per
10577 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
10579 U is an uppercase letter and N is a hex digit.
10582 ----------------------------------------
10583 06 October 2004. Summary of changes for version 20041006:
10585 1) ACPI CA Core Subsystem:
10587 Implemented support for the ACPI 3.0 Timer operator. This ASL function
10588 implements a 64-bit timer with 100 nanosecond granularity.
10590 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
10591 implement the ACPI 3.0 Timer operator. This allows the host OS to
10593 the timer with the best clock available. Also, it keeps the core
10595 out of the clock handling business, since the host OS (usually) performs
10598 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
10599 functions use a 64-bit address which is part of the packed ACPI Generic
10600 Address Structure. Since the structure is non-aligned, the alignment
10602 are now used to extract the address to a local variable before use.
10604 Fixed a problem where the ToInteger operator assumed all input strings
10606 hexadecimal. The operator now handles both decimal strings and hex
10608 (prefixed with "0x").
10610 Fixed a problem where the string length in the string object created as a
10611 result of the internal ConvertToString procedure could be incorrect. This
10612 potentially affected all implicit conversions and also the
10614 and ToHexString operators.
10616 Fixed two problems in the ToString operator. If the length parameter was
10617 zero, an incorrect string object was created and the value of the input
10618 length parameter was inadvertently changed from zero to Ones.
10620 Fixed a problem where the optional ResourceSource string in the
10622 resource macro was ignored.
10624 Simplified the interfaces to the internal division functions, reducing
10626 size and complexity.
10628 Code and Data Size: Current and previous core subsystem library sizes are
10629 shown below. These are the code and data sizes for the acpica.lib
10631 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10632 any ACPI driver or OSPM code. The debug version of the code includes the
10633 debug output trace mechanism and has a much larger code and data size.
10635 that these values will vary depending on the efficiency of the compiler
10637 the compiler options used during generation.
10640 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10641 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10643 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10644 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10647 2) iASL Compiler/Disassembler:
10649 Implemented support for the ACPI 3.0 Timer operator.
10651 Fixed a problem where the Default() operator was inadvertently ignored in
10653 Switch/Case block. This was a problem in the translation of the Switch
10654 statement to If...Else pairs.
10656 Added support to allow a standalone Return operator, with no parentheses
10660 Fixed a problem with code generation for the ElseIf operator where the
10661 translated Else...If parse tree was improperly constructed leading to the
10664 ----------------------------------------
10665 22 September 2004. Summary of changes for version 20040922:
10667 1) ACPI CA Core Subsystem:
10669 Fixed a problem with the implementation of the LNot() operator where
10671 was not returned for the TRUE case. Changed the code to return Ones
10673 of (!Arg) which was usually 1. This change affects iASL constant folding
10675 this operator also.
10677 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10679 initialized properly -- Now zero the entire buffer in this case where the
10680 buffer already exists.
10682 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10683 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10684 related code considerably. This will require changes/updates to all OS
10685 interface layers (OSLs.)
10687 Implemented a new external interface, AcpiInstallExceptionHandler, to
10689 a system exception handler to be installed. This handler is invoked upon
10691 run-time exception that occurs during control method execution.
10693 Added support for the DSDT in AcpiTbFindTable. This allows the
10694 DataTableRegion() operator to access the local copy of the DSDT.
10696 Code and Data Size: Current and previous core subsystem library sizes are
10697 shown below. These are the code and data sizes for the acpica.lib
10699 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10700 any ACPI driver or OSPM code. The debug version of the code includes the
10701 debug output trace mechanism and has a much larger code and data size.
10703 that these values will vary depending on the efficiency of the compiler
10705 the compiler options used during generation.
10708 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10709 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10711 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10712 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10715 2) iASL Compiler/Disassembler:
10717 Fixed a problem with constant folding and the LNot operator. LNot was
10718 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10720 could result in the generation of an incorrect folded/reduced constant.
10722 End-Of-File is now allowed within a "//"-style comment. A parse error no
10723 longer occurs if such a comment is at the very end of the input ASL
10727 Implemented the "-r" option to override the Revision in the table header.
10728 The initial use of this option will be to simplify the evaluation of the
10730 interpreter by allowing a single ASL source module to be compiled for
10732 32-bit or 64-bit integers.
10735 ----------------------------------------
10736 27 August 2004. Summary of changes for version 20040827:
10738 1) ACPI CA Core Subsystem:
10740 - Implemented support for implicit object conversion in the non-numeric
10741 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10743 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10744 the second operand is implicitly converted on the fly to match the type
10746 the first operand. For example:
10748 LEqual (Source1, Source2)
10750 Source1 and Source2 must each evaluate to an integer, a string, or a
10752 The data type of Source1 dictates the required type of Source2. Source2
10754 implicitly converted if necessary to match the type of Source1.
10756 - Updated and corrected the behavior of the string conversion support.
10758 rules concerning conversion of buffers to strings (according to the ACPI
10759 specification) are as follows:
10761 ToDecimalString - explicit byte-wise conversion of buffer to string of
10762 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10764 conversion of buffer to string of hex values (0-FF) separated by commas.
10765 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10767 copy with no transform except NULL terminated. Any other implicit buffer-
10769 string conversion - byte-wise conversion of buffer to string of hex
10771 (0-FF) separated by spaces.
10773 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10775 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10777 one byte too short in the case of a node in the root scope. This could
10778 cause a fault during debug output.
10780 - Code and Data Size: Current and previous core subsystem library sizes
10782 shown below. These are the code and data sizes for the acpica.lib
10784 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10785 any ACPI driver or OSPM code. The debug version of the code includes the
10786 debug output trace mechanism and has a much larger code and data size.
10788 that these values will vary depending on the efficiency of the compiler
10790 the compiler options used during generation.
10793 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10794 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10796 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10797 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10800 2) iASL Compiler/Disassembler:
10802 - Fixed a Linux generation error.
10805 ----------------------------------------
10806 16 August 2004. Summary of changes for version 20040816:
10808 1) ACPI CA Core Subsystem:
10810 Designed and implemented support within the AML interpreter for the so-
10811 called "implicit return". This support returns the result of the last
10813 operation within a control method, in the absence of an explicit Return()
10814 operator. A few machines depend on this behavior, even though it is not
10815 explicitly supported by the ASL language. It is optional support that
10817 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10819 Removed support for the PCI_Config address space from the internal low
10821 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10822 support was not used internally, and would not work correctly anyway
10824 the PCI bus number and segment number were not supported. There are
10825 separate interfaces for PCI configuration space access because of the
10829 Code and Data Size: Current and previous core subsystem library sizes are
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: 78.0K Code, 11.5K Data, 89.5K Total
10842 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10844 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10845 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10848 2) iASL Compiler/Disassembler:
10850 Fixed a problem where constants in ASL expressions at the root level (not
10851 within a control method) could be inadvertently truncated during code
10852 generation. This problem was introduced in the 20040715 release.
10855 ----------------------------------------
10856 15 July 2004. Summary of changes for version 20040715:
10858 1) ACPI CA Core Subsystem:
10860 Restructured the internal HW GPE interfaces to pass/track the current
10862 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10863 increase flexibility of the interfaces.
10865 Implemented a "lexicographical compare" for String and Buffer objects
10867 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10869 as per further clarification to the ACPI specification. Behavior is
10871 to C library "strcmp".
10873 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10874 external function. In the 32-bit non-debug case, the stack use has been
10875 reduced from 168 bytes to 32 bytes.
10877 Deployed a new run-time configuration flag,
10878 AcpiGbl_EnableInterpreterSlack,
10879 whose purpose is to allow the AML interpreter to forgive certain bad AML
10880 constructs. Default setting is FALSE.
10882 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10884 support code. If enabled, it allows field access to go beyond the end of
10886 region definition if the field is within the region length rounded up to
10888 next access width boundary (a common coding error.)
10890 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10891 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10893 symbols are lowercased by the latest version of the AcpiSrc tool.
10895 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10896 rename "Register" to simply "Reg" to prevent certain compilers from
10899 Code and Data Size: Current and previous core subsystem library sizes are
10900 shown below. These are the code and data sizes for the acpica.lib
10902 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10903 any ACPI driver or OSPM code. The debug version of the code includes the
10904 debug output trace mechanism and has a much larger code and data size.
10906 that these values will vary depending on the efficiency of the compiler
10908 the compiler options used during generation.
10911 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10912 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10914 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10915 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10918 2) iASL Compiler/Disassembler:
10920 Implemented full support for Package objects within the Case() operator.
10921 Note: The Break() operator is currently not supported within Case blocks
10922 (TermLists) as there is some question about backward compatibility with
10927 Fixed a problem where complex terms were not supported properly within
10931 Eliminated extraneous warning for compiler-emitted reserved names of the
10932 form "_T_x". (Used in Switch/Case operators.)
10934 Eliminated optimization messages for "_T_x" objects and small constants
10935 within the DefinitionBlock operator.
10938 ----------------------------------------
10939 15 June 2004. Summary of changes for version 20040615:
10941 1) ACPI CA Core Subsystem:
10943 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10945 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10948 All directory names in the entire source package are lower case, as they
10949 were in earlier releases.
10951 Implemented "Disassemble" command in the AML debugger that will
10953 a single control method.
10955 Code and Data Size: Current and previous core subsystem library sizes are
10956 shown below. These are the code and data sizes for the acpica.lib
10958 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10959 any ACPI driver or OSPM code. The debug version of the code includes the
10960 debug output trace mechanism and has a much larger code and data size.
10962 that these values will vary depending on the efficiency of the compiler
10964 the compiler options used during generation.
10967 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10968 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10971 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10972 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10975 2) iASL Compiler/Disassembler:
10977 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10979 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10982 All directory names in the entire source package are lower case, as they
10983 were in earlier releases.
10985 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10988 Fixed an issue with the Windows version of the compiler where later
10990 of Windows place the FADT in the registry under the name "FADT" and not
10991 "FACP" as earlier versions did. This applies when using the -g or -
10992 d<nofilename> options. The compiler now looks for both strings as
10995 Fixed a problem with compiler namepath optimization where a namepath
10997 the Scope() operator could not be optimized if the namepath was a subpath
10999 the current scope path.
11001 ----------------------------------------
11002 27 May 2004. Summary of changes for version 20040527:
11004 1) ACPI CA Core Subsystem:
11006 Completed a new design and implementation for EBDA (Extended BIOS Data
11008 support in the RSDP scan code. The original code improperly scanned for
11010 EBDA by simply scanning from memory location 0 to 0x400. The correct
11012 is to first obtain the EBDA pointer from within the BIOS data area, then
11013 scan 1K of memory starting at the EBDA pointer. There appear to be few
11015 any machines that place the RSDP in the EBDA, however.
11017 Integrated a fix for a possible fault during evaluation of BufferField
11018 arguments. Obsolete code that was causing the problem was removed.
11020 Found and fixed a problem in the Field Support Code where data could be
11021 corrupted on a bit field read that starts on an aligned boundary but does
11022 not end on an aligned boundary. Merged the read/write "datum length"
11023 calculation code into a common procedure.
11025 Rolled in a couple of changes to the FreeBSD-specific header.
11028 Code and Data Size: Current and previous core subsystem library sizes are
11029 shown below. These are the code and data sizes for the acpica.lib
11031 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11032 any ACPI driver or OSPM code. The debug version of the code includes the
11033 debug output trace mechanism and has a much larger code and data size.
11035 that these values will vary depending on the efficiency of the compiler
11037 the compiler options used during generation.
11040 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11041 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11043 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11044 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11047 2) iASL Compiler/Disassembler:
11049 Fixed a generation warning produced by some overly-verbose compilers for
11053 ----------------------------------------
11054 14 May 2004. Summary of changes for version 20040514:
11056 1) ACPI CA Core Subsystem:
11058 Fixed a problem where hardware GPE enable bits sometimes not set properly
11059 during and after GPE method execution. Result of 04/27 changes.
11061 Removed extra "clear all GPEs" when sleeping/waking.
11063 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
11064 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
11066 the new AcpiEv* calls as appropriate.
11068 ACPI_OS_NAME was removed from the OS-specific headers. The default name
11070 now "Microsoft Windows NT" for maximum compatibility. However this can
11072 changed by modifying the acconfig.h file.
11074 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
11075 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
11077 Run _INI methods on ThermalZone objects. This is against the ACPI
11078 specification, but there is apparently ASL code in the field that has
11080 _INI methods, and apparently "other" AML interpreters execute them.
11082 Performed a full 16/32/64 bit lint that resulted in some small changes.
11084 Added a sleep simulation command to the AML debugger to test sleep code.
11086 Code and Data Size: Current and previous core subsystem library sizes are
11087 shown below. These are the code and data sizes for the acpica.lib
11089 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11090 any ACPI driver or OSPM code. The debug version of the code includes the
11091 debug output trace mechanism and has a much larger code and data size.
11093 that these values will vary depending on the efficiency of the compiler
11095 the compiler options used during generation.
11098 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11099 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11101 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11102 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11104 ----------------------------------------
11105 27 April 2004. Summary of changes for version 20040427:
11107 1) ACPI CA Core Subsystem:
11109 Completed a major overhaul of the GPE handling within ACPI CA. There are
11110 now three types of GPEs: wake-only, runtime-only, and combination
11112 The only GPEs allowed to be combination wake/run are for button-style
11113 devices such as a control-method power button, control-method sleep
11115 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
11117 referenced by any _PRW methods are marked for "runtime" and hardware
11118 enabled. Any GPE that is referenced by a _PRW method is marked for
11120 (and disabled at runtime). However, at sleep time, only those GPEs that
11121 have been specifically enabled for wake via the AcpiEnableGpe interface
11123 actually be hardware enabled.
11125 A new external interface has been added, AcpiSetGpeType(), that is meant
11127 be used by device drivers to force a GPE to a particular type. It will
11129 especially useful for the drivers for the button devices mentioned above.
11131 Completed restructuring of the ACPI CA initialization sequence so that
11132 default operation region handlers are installed before GPEs are
11134 and the _PRW methods are executed. This will prevent errors when the
11136 methods attempt to access system memory or I/O space.
11138 GPE enable/disable no longer reads the GPE enable register. We now keep
11140 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
11141 thus no longer depend on the hardware to maintain these bits.
11143 Always clear the wake status and fixed/GPE status bits before sleep, even
11146 Improved the AML debugger output for displaying the GPE blocks and their
11149 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
11153 Fixed a problem where the physical address was incorrectly calculated
11155 the Load() operator was used to directly load from an Operation Region
11157 loading from a Field object.) Also added check for minimum table length
11161 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
11164 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
11165 consistency with the other fields returned.
11167 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
11168 structure for each GPE in the system, so the size of this structure is
11171 CPU stack requirement reduction: Cleaned up the method execution and
11173 evaluation paths so that now a parameter structure is passed, instead of
11174 copying the various method parameters over and over again.
11176 In evregion.c: Correctly exit and reenter the interpreter region if and
11177 only if dispatching an operation region request to a user-installed
11179 Do not exit/reenter when dispatching to a default handler (e.g., default
11180 system memory or I/O handlers)
11183 Notes for updating drivers for the new GPE support. The following
11185 must be made to ACPI-related device drivers that are attached to one or
11187 GPEs: (This information will be added to the ACPI CA Programmer
11190 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
11192 explicitly call AcpiEnableGpe.
11193 2) There is a new interface called AcpiSetGpeType. This should be called
11194 before enabling the GPE. Also, this interface will automatically disable
11195 the GPE if it is currently enabled.
11196 3) AcpiEnableGpe no longer supports a GPE type flag.
11198 Specific drivers that must be changed:
11200 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
11201 AeGpeHandler, NULL);
11202 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
11203 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
11205 2) Button Drivers (Power, Lid, Sleep):
11206 Run _PRW method under parent device
11207 If _PRW exists: /* This is a control-method button */
11208 Extract GPE number and possibly GpeDevice
11209 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
11210 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
11212 For all other devices that have _PRWs, we automatically set the GPE type
11214 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
11216 must be done on a selective basis, usually requiring some kind of user
11218 to allow the user to pick the wake devices.
11221 Code and Data Size: Current and previous core subsystem library sizes are
11222 shown below. These are the code and data sizes for the acpica.lib
11224 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11225 any ACPI driver or OSPM code. The debug version of the code includes the
11226 debug output trace mechanism and has a much larger code and data size.
11228 that these values will vary depending on the efficiency of the compiler
11230 the compiler options used during generation.
11233 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11234 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11237 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11238 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11242 ----------------------------------------
11243 02 April 2004. Summary of changes for version 20040402:
11245 1) ACPI CA Core Subsystem:
11247 Fixed an interpreter problem where an indirect store through an ArgX
11248 parameter was incorrectly applying the "implicit conversion rules" during
11249 the store. From the ACPI specification: "If the target is a method local
11251 argument (LocalX or ArgX), no conversion is performed and the result is
11252 stored directly to the target". The new behavior is to disable implicit
11253 conversion during ALL stores to an ArgX.
11255 Changed the behavior of the _PRW method scan to ignore any and all errors
11256 returned by a given _PRW. This prevents the scan from aborting from the
11257 failure of any single _PRW.
11259 Moved the runtime configuration parameters from the global init procedure
11261 static variables in acglobal.h. This will allow the host to override the
11262 default values easily.
11264 Code and Data Size: Current and previous core subsystem library sizes are
11265 shown below. These are the code and data sizes for the acpica.lib
11267 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11268 any ACPI driver or OSPM code. The debug version of the code includes the
11269 debug output trace mechanism and has a much larger code and data size.
11271 that these values will vary depending on the efficiency of the compiler
11273 the compiler options used during generation.
11276 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11277 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11279 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11280 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11283 2) iASL Compiler/Disassembler:
11285 iASL now fully disassembles SSDTs. However, External() statements are
11287 generated automatically for unresolved symbols at this time. This is a
11288 planned feature for future implementation.
11290 Fixed a scoping problem in the disassembler that occurs when the type of
11292 target of a Scope() operator is overridden. This problem caused an
11293 incorrectly nested internal namespace to be constructed.
11295 Any warnings or errors that are emitted during disassembly are now
11297 out automatically so that the resulting file can be recompiled without
11301 ----------------------------------------
11302 26 March 2004. Summary of changes for version 20040326:
11304 1) ACPI CA Core Subsystem:
11306 Implemented support for "wake" GPEs via interaction between GPEs and the
11307 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
11308 identified as a WAKE GPE and by default will no longer be enabled at
11309 runtime. Previously, we were blindly enabling all GPEs with a
11311 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
11313 believe this has been the cause of thousands of "spurious" GPEs on some
11316 This new GPE behavior is can be reverted to the original behavior (enable
11317 ALL GPEs at runtime) via a runtime flag.
11319 Fixed a problem where aliased control methods could not access objects
11320 properly. The proper scope within the namespace was not initialized
11321 (transferred to the target of the aliased method) before executing the
11324 Fixed a potential race condition on internal object deletion on the
11326 object in AcpiEvaluateObject.
11328 Integrated a fix for resource descriptors where both _MEM and _MTP were
11329 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
11330 wide, 0x0F instead of 0x03.)
11332 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
11335 fault in some cases.
11337 Updated Notify() values for debug statements in evmisc.c
11339 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
11341 Code and Data Size: Current and previous core subsystem library sizes are
11342 shown below. These are the code and data sizes for the acpica.lib
11344 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11345 any ACPI driver or OSPM code. The debug version of the code includes the
11346 debug output trace mechanism and has a much larger code and data size.
11348 that these values will vary depending on the efficiency of the compiler
11350 the compiler options used during generation.
11354 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11355 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11357 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11358 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11360 ----------------------------------------
11361 11 March 2004. Summary of changes for version 20040311:
11363 1) ACPI CA Core Subsystem:
11365 Fixed a problem where errors occurring during the parse phase of control
11366 method execution did not abort cleanly. For example, objects created and
11367 installed in the namespace were not deleted. This caused all subsequent
11368 invocations of the method to return the AE_ALREADY_EXISTS exception.
11370 Implemented a mechanism to force a control method to "Serialized"
11372 if the method attempts to create namespace objects. (The root of the
11373 AE_ALREADY_EXISTS problem.)
11375 Implemented support for the predefined _OSI "internal" control method.
11376 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
11378 "Windows 2001.1", and can be easily upgraded for new strings as
11380 This feature will allow "other" operating systems to execute the fully
11381 tested, "Windows" code path through the ASL code
11383 Global Lock Support: Now allows multiple acquires and releases with any
11384 internal thread. Removed concept of "owning thread" for this special
11387 Fixed two functions that were inappropriately declaring large objects on
11389 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
11391 method execution considerably.
11393 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
11394 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
11396 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
11397 defined on the machine.
11399 Implemented two runtime options: One to force all control method
11401 to "Serialized" to mimic Windows behavior, another to disable _OSI
11403 if it causes problems on a given machine.
11405 Code and Data Size: Current and previous core subsystem library sizes are
11406 shown below. These are the code and data sizes for the acpica.lib
11408 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11409 any ACPI driver or OSPM code. The debug version of the code includes the
11410 debug output trace mechanism and has a much larger code and data size.
11412 that these values will vary depending on the efficiency of the compiler
11414 the compiler options used during generation.
11417 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11418 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11420 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11421 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11423 2) iASL Compiler/Disassembler:
11425 Fixed an array size problem for FreeBSD that would cause the compiler to
11428 ----------------------------------------
11429 20 February 2004. Summary of changes for version 20040220:
11432 1) ACPI CA Core Subsystem:
11434 Implemented execution of _SxD methods for Device objects in the
11435 GetObjectInfo interface.
11437 Fixed calls to _SST method to pass the correct arguments.
11439 Added a call to _SST on wake to restore to "working" state.
11441 Check for End-Of-Buffer failure case in the WalkResources interface.
11443 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
11444 structures to the beginning of the file.
11446 After wake, clear GPE status register(s) before enabling GPEs.
11448 After wake, clear/enable power button. (Perhaps we should clear/enable
11450 fixed events upon wake.)
11452 Fixed a couple of possible memory leaks in the Namespace manager.
11454 Integrated latest acnetbsd.h file.
11456 ----------------------------------------
11457 11 February 2004. Summary of changes for version 20040211:
11460 1) ACPI CA Core Subsystem:
11462 Completed investigation and implementation of the call-by-reference
11463 mechanism for control method arguments.
11465 Fixed a problem where a store of an object into an indexed package could
11466 fail if the store occurs within a different method than the method that
11467 created the package.
11469 Fixed a problem where the ToDecimal operator could return incorrect
11472 Fixed a problem where the CopyObject operator could fail on some of the
11474 obscure objects (e.g., Reference objects.)
11476 Improved the output of the Debug object to display buffer, package, and
11479 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
11481 the expected result.
11483 Added permanent ACPI_REPORT_ERROR macros for all instances of the
11484 ACPI_AML_INTERNAL exception.
11486 Integrated latest version of acfreebsd.h
11488 ----------------------------------------
11489 16 January 2004. Summary of changes for version 20040116:
11491 The purpose of this release is primarily to update the copyright years in
11492 each module, thus causing a huge number of diffs. There are a few small
11493 functional changes, however.
11495 1) ACPI CA Core Subsystem:
11497 Improved error messages when there is a problem finding one or more of
11499 required base ACPI tables
11501 Reintroduced the definition of APIC_HEADER in actbl.h
11503 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
11505 Removed extraneous reference to NewObj in dsmthdat.c
11509 Fixed a problem introduced in December that disabled the correct
11511 of Resource Templates
11514 ----------------------------------------
11515 03 December 2003. Summary of changes for version 20031203:
11517 1) ACPI CA Core Subsystem:
11519 Changed the initialization of Operation Regions during subsystem
11520 init to perform two entire walks of the ACPI namespace; The first
11521 to initialize the regions themselves, the second to execute the
11522 _REG methods. This fixed some interdependencies across _REG
11523 methods found on some machines.
11525 Fixed a problem where a Store(Local0, Local1) could simply update
11526 the object reference count, and not create a new copy of the
11527 object if the Local1 is uninitialized.
11529 Implemented support for the _SST reserved method during sleep
11532 Implemented support to clear the SLP_TYP and SLP_EN bits when
11533 waking up, this is apparently required by some machines.
11535 When sleeping, clear the wake status only if SleepState is not S5.
11537 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
11538 pointer arithmetic advanced a string pointer too far.
11540 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
11541 could be returned if the requested table has not been loaded.
11543 Within the support for IRQ resources, restructured the handling of
11544 the active and edge/level bits.
11546 Fixed a few problems in AcpiPsxExecute() where memory could be
11547 leaked under certain error conditions.
11549 Improved error messages for the cases where the ACPI mode could
11552 Code and Data Size: Current and previous core subsystem library
11553 sizes are shown below. These are the code and data sizes for the
11554 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11555 these values do not include any ACPI driver or OSPM code. The
11556 debug version of the code includes the debug output trace
11557 mechanism and has a much larger code and data size. Note that
11558 these values will vary depending on the efficiency of the compiler
11559 and the compiler options used during generation.
11561 Previous Release (20031029):
11562 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11563 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11565 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11566 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11568 2) iASL Compiler/Disassembler:
11570 Implemented a fix for the iASL disassembler where a bad index was
11571 generated. This was most noticeable on 64-bit platforms
11574 ----------------------------------------
11575 29 October 2003. Summary of changes for version 20031029:
11577 1) ACPI CA Core Subsystem:
11580 Fixed a problem where a level-triggered GPE with an associated
11581 _Lxx control method was incorrectly cleared twice.
11583 Fixed a problem with the Field support code where an access can
11584 occur beyond the end-of-region if the field is non-aligned but
11585 extends to the very end of the parent region (resulted in an
11586 AE_AML_REGION_LIMIT exception.)
11588 Fixed a problem with ACPI Fixed Events where an RT Clock handler
11589 would not get invoked on an RTC event. The RTC event bitmasks for
11590 the PM1 registers were not being initialized properly.
11592 Implemented support for executing _STA and _INI methods for
11593 Processor objects. Although this is currently not part of the
11594 ACPI specification, there is existing ASL code that depends on the
11595 init-time execution of these methods.
11597 Implemented and deployed a GetDescriptorName function to decode
11598 the various types of internal descriptors. Guards against null
11599 descriptors during debug output also.
11601 Implemented and deployed a GetNodeName function to extract the 4-
11602 character namespace node name. This function simplifies the debug
11603 and error output, as well as guarding against null pointers during
11606 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
11607 simplify the debug and error output of 64-bit integers. This
11608 macro replaces the HIDWORD and LODWORD macros for dumping these
11611 Updated the implementation of the Stall() operator to only call
11612 AcpiOsStall(), and also return an error if the operand is larger
11613 than 255. This preserves the required behavior of not
11614 relinquishing the processor, as would happen if AcpiOsSleep() was
11615 called for "long stalls".
11617 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
11618 initialized are now treated as NOOPs.
11620 Cleaned up a handful of warnings during 64-bit generation.
11622 Fixed a reported error where and incorrect GPE number was passed
11623 to the GPE dispatch handler. This value is only used for error
11624 output, however. Used this opportunity to clean up and streamline
11625 the GPE dispatch code.
11627 Code and Data Size: Current and previous core subsystem library
11628 sizes are shown below. These are the code and data sizes for the
11629 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11630 these values do not include any ACPI driver or OSPM code. The
11632 debug version of the code includes the debug output trace
11633 mechanism and has a much larger code and data size. Note that
11634 these values will vary depending on the efficiency of the compiler
11635 and the compiler options used during generation.
11637 Previous Release (20031002):
11638 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11639 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11641 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11642 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11645 2) iASL Compiler/Disassembler:
11647 Updated the iASL compiler to return an error if the operand to the
11648 Stall() operator is larger than 255.
11651 ----------------------------------------
11652 02 October 2003. Summary of changes for version 20031002:
11655 1) ACPI CA Core Subsystem:
11657 Fixed a problem with Index Fields where the index was not
11658 incremented for fields that require multiple writes to the
11659 index/data registers (Fields that are wider than the data
11662 Fixed a problem with all Field objects where a write could go
11663 beyond the end-of-field if the field was larger than the access
11664 granularity and therefore required multiple writes to complete the
11665 request. An extra write beyond the end of the field could happen
11668 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11669 would incorrectly be returned if the width of the Data Register
11670 was larger than the specified field access width.
11672 Completed fixes for LoadTable() and Unload() and verified their
11673 operation. Implemented full support for the "DdbHandle" object
11674 throughout the ACPI CA subsystem.
11676 Implemented full support for the MADT and ECDT tables in the ACPI
11677 CA header files. Even though these tables are not directly
11678 consumed by ACPI CA, the header definitions are useful for ACPI
11681 Integrated resource descriptor fixes posted to the Linux ACPI
11682 list. This included checks for minimum descriptor length, and
11683 support for trailing NULL strings within descriptors that have
11684 optional string elements.
11686 Code and Data Size: Current and previous core subsystem library
11687 sizes are shown below. These are the code and data sizes for the
11688 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11689 these values do not include any ACPI driver or OSPM code. The
11690 debug version of the code includes the debug output trace
11691 mechanism and has a much larger code and data size. Note that
11692 these values will vary depending on the efficiency of the compiler
11693 and the compiler options used during generation.
11695 Previous Release (20030918):
11696 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11697 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11699 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11700 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11705 Implemented detection of non-ASCII characters within the input
11706 source ASL file. This catches attempts to compile binary (AML)
11707 files early in the compile, with an informative error message.
11709 Fixed a problem where the disassembler would fault if the output
11710 filename could not be generated or if the output file could not be
11713 ----------------------------------------
11714 18 September 2003. Summary of changes for version 20030918:
11717 1) ACPI CA Core Subsystem:
11719 Found and fixed a longstanding problem with the late execution of
11720 the various deferred AML opcodes (such as Operation Regions,
11721 Buffer Fields, Buffers, and Packages). If the name string
11722 specified for the name of the new object placed the object in a
11723 scope other than the current scope, the initialization/execution
11724 of the opcode failed. The solution to this problem was to
11725 implement a mechanism where the late execution of such opcodes
11726 does not attempt to lookup/create the name a second time in an
11727 incorrect scope. This fixes the "region size computed
11728 incorrectly" problem.
11730 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11731 Global Lock AE_BAD_PARAMETER error.
11733 Fixed several 64-bit issues with prototypes, casting and data
11736 Removed duplicate prototype from acdisasm.h
11738 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11740 Code and Data Size: Current and previous core subsystem library
11741 sizes are shown below. These are the code and data sizes for the
11742 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11743 these values do not include any ACPI driver or OSPM code. The
11744 debug version of the code includes the debug output trace
11745 mechanism and has a much larger code and data size. Note that
11746 these values will vary depending on the efficiency of the compiler
11747 and the compiler options used during generation.
11751 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11752 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11754 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11755 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11760 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11761 correct sleep time in seconds.
11763 ----------------------------------------
11764 14 July 2003. Summary of changes for version 20030619:
11766 1) ACPI CA Core Subsystem:
11768 Parse SSDTs in order discovered, as opposed to reverse order
11771 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11778 Dynamically allocate SDT list (suggested by Andi Kleen)
11780 proc function return value cleanups (Andi Kleen)
11782 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11784 Make it so acpismp=force works (reported by Andrew Morton)
11787 ----------------------------------------
11788 19 June 2003. Summary of changes for version 20030619:
11790 1) ACPI CA Core Subsystem:
11792 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11794 Do not acquire a semaphore in the S5 shutdown path.
11796 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11798 Fix sleep/stall code reversal. (Andi Kleen)
11800 Revert a change having to do with control method calling
11805 acpiphp update (Takayoshi Kochi)
11807 Export acpi_disabled for sonypi (Stelian Pop)
11809 Mention acpismp=force in config help
11811 Re-add acpitable.c and acpismp=force. This improves backwards
11813 compatibility and also cleans up the code to a significant degree.
11815 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11817 ----------------------------------------
11818 22 May 2003. Summary of changes for version 20030522:
11820 1) ACPI CA Core Subsystem:
11822 Found and fixed a reported problem where an AE_NOT_FOUND error
11823 occurred occasionally during _BST evaluation. This turned out to
11824 be an Owner ID allocation issue where a called method did not get
11825 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11826 ID UINT16 would wraparound so that the ID would be the same as the
11827 caller's and the called method would delete the caller's
11830 Implemented extended error reporting for control methods that are
11831 aborted due to a run-time exception. Output includes the exact
11832 AML instruction that caused the method abort, a dump of the method
11833 locals and arguments at the time of the abort, and a trace of all
11834 nested control method calls.
11836 Modified the interpreter to allow the creation of buffers of zero
11837 length from the AML code. Implemented new code to ensure that no
11838 attempt is made to actually allocate a memory buffer (of length
11839 zero) - instead, a simple buffer object with a NULL buffer pointer
11840 and length zero is created. A warning is no longer issued when
11841 the AML attempts to create a zero-length buffer.
11843 Implemented a workaround for the "leading asterisk issue" in
11844 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11845 asterisk is automatically removed if present in any HID, UID, or
11846 CID strings. The iASL compiler will still flag this asterisk as
11849 Implemented full support for _CID methods that return a package of
11850 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11851 now additionally returns a device _CID list if present. This
11852 required a change to the external interface in order to pass an
11853 ACPI_BUFFER object as a parameter since the _CID list is of
11856 Fixed a problem with the new AE_SAME_HANDLER exception where
11857 handler initialization code did not know about this exception.
11859 Code and Data Size: Current and previous core subsystem library
11860 sizes are shown below. These are the code and data sizes for the
11861 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11862 these values do not include any ACPI driver or OSPM code. The
11863 debug version of the code includes the debug output trace
11864 mechanism and has a much larger code and data size. Note that
11865 these values will vary depending on the efficiency of the compiler
11866 and the compiler options used during generation.
11868 Previous Release (20030509):
11869 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11870 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11872 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11873 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11878 Fixed a bug in which we would reinitialize the ACPI interrupt
11879 after it was already working, thus disabling all ACPI and the IRQs
11880 for any other device sharing the interrupt. (Thanks to Stian
11883 Toshiba driver update (John Belmonte)
11885 Return only 0 or 1 for our interrupt handler status (Andrew
11891 Fixed a reported problem where multiple (nested) ElseIf()
11892 statements were not handled correctly by the compiler, resulting
11893 in incorrect warnings and incorrect AML code. This was a problem
11894 in both the ASL parser and the code generator.
11899 Added changes to existing interfaces, new exception codes, and new
11900 text concerning reference count object management versus garbage
11903 ----------------------------------------
11904 09 May 2003. Summary of changes for version 20030509.
11907 1) ACPI CA Core Subsystem:
11909 Changed the subsystem initialization sequence to hold off
11910 installation of address space handlers until the hardware has been
11911 initialized and the system has entered ACPI mode. This is because
11912 the installation of space handlers can cause _REG methods to be
11913 run. Previously, the _REG methods could potentially be run before
11914 ACPI mode was enabled.
11916 Fixed some memory leak issues related to address space handler and
11917 notify handler installation. There were some problems with the
11918 reference count mechanism caused by the fact that the handler
11919 objects are shared across several namespace objects.
11921 Fixed a reported problem where reference counts within the
11922 namespace were not properly updated when named objects created by
11923 method execution were deleted.
11925 Fixed a reported problem where multiple SSDTs caused a deletion
11926 issue during subsystem termination. Restructured the table data
11927 structures to simplify the linked lists and the related code.
11929 Fixed a problem where the table ID associated with secondary
11930 tables (SSDTs) was not being propagated into the namespace objects
11931 created by those tables. This would only present a problem for
11932 tables that are unloaded at run-time, however.
11934 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11935 type as the length parameter (instead of UINT32).
11937 Solved a long-standing problem where an ALREADY_EXISTS error
11938 appears on various systems. This problem could happen when there
11939 are multiple PCI_Config operation regions under a single PCI root
11940 bus. This doesn't happen very frequently, but there are some
11941 systems that do this in the ASL.
11943 Fixed a reported problem where the internal DeleteNode function
11944 was incorrectly handling the case where a namespace node was the
11945 first in the parent's child list, and had additional peers (not
11946 the only child, but first in the list of children.)
11948 Code and Data Size: Current core subsystem library sizes are shown
11949 below. These are the code and data sizes for the acpica.lib
11950 produced by the Microsoft Visual C++ 6.0 compiler, and these
11951 values do not include any ACPI driver or OSPM code. The debug
11952 version of the code includes the debug output trace mechanism and
11953 has a much larger code and data size. Note that these values will
11954 vary depending on the efficiency of the compiler and the compiler
11955 options used during generation.
11958 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11959 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11961 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11962 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11967 Allow ":" in OS override string (Ducrot Bruno)
11969 Kobject fix (Greg KH)
11972 3 iASL Compiler/Disassembler:
11974 Fixed a problem in the generation of the C source code files (AML
11975 is emitted in C source statements for BIOS inclusion) where the
11976 Ascii dump that appears within a C comment at the end of each line
11977 could cause a compile time error if the AML sequence happens to
11978 have an open comment or close comment sequence embedded.
11981 ----------------------------------------
11982 24 April 2003. Summary of changes for version 20030424.
11985 1) ACPI CA Core Subsystem:
11987 Support for big-endian systems has been implemented. Most of the
11988 support has been invisibly added behind big-endian versions of the
11989 ACPI_MOVE_* macros.
11991 Fixed a problem in AcpiHwDisableGpeBlock() and
11992 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11993 low level hardware write routine. The offset parameter was
11994 actually eliminated from the low level read/write routines because
11995 they had become obsolete.
11997 Fixed a problem where a handler object was deleted twice during
11998 the removal of a fixed event handler.
12003 A fix for SMP systems with link devices was contributed by
12007 (2.5) Return whether we handled the interrupt in our IRQ handler.
12008 (Linux ISRs no longer return void, so we can propagate the handler
12009 return value from the ACPI CA core back to the OS.)
12015 The ACPI CA Programmer Reference has been updated to reflect new
12016 interfaces and changes to existing interfaces.
12018 ----------------------------------------
12019 28 March 2003. Summary of changes for version 20030328.
12021 1) ACPI CA Core Subsystem:
12023 The GPE Block Device support has been completed. New interfaces
12024 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
12025 interfaces (enable, disable, clear, getstatus) have been split
12026 into separate interfaces for Fixed Events and General Purpose
12027 Events (GPEs) in order to support GPE Block Devices properly.
12029 Fixed a problem where the error message "Failed to acquire
12030 semaphore" would appear during operations on the embedded
12033 Code and Data Size: Current core subsystem library sizes are shown
12034 below. These are the code and data sizes for the acpica.lib
12035 produced by the Microsoft Visual C++ 6.0 compiler, and these
12036 values do not include any ACPI driver or OSPM code. The debug
12037 version of the code includes the debug output trace mechanism and
12038 has a much larger code and data size. Note that these values will
12039 vary depending on the efficiency of the compiler and the compiler
12040 options used during generation.
12043 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12044 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12046 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12047 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12050 ----------------------------------------
12051 28 February 2003. Summary of changes for version 20030228.
12054 1) ACPI CA Core Subsystem:
12056 The GPE handling and dispatch code has been completely overhauled
12057 in preparation for support of GPE Block Devices (ID ACPI0006).
12058 This affects internal data structures and code only; there should
12059 be no differences visible externally. One new file has been
12062 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
12063 fields that are used to determine the GPE block lengths. The
12064 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
12065 structures are ignored. This is per the ACPI specification but it
12066 isn't very clear. The full 256 Block 0/1 GPEs are now supported
12067 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
12069 In the SCI interrupt handler, removed the read of the PM1_CONTROL
12070 register to look at the SCI_EN bit. On some machines, this read
12071 causes an SMI event and greatly slows down SCI events. (This may
12072 in fact be the cause of slow battery status response on some
12075 Fixed a problem where a store of a NULL string to a package object
12076 could cause the premature deletion of the object. This was seen
12077 during execution of the battery _BIF method on some systems,
12078 resulting in no battery data being returned.
12080 Added AcpiWalkResources interface to simplify parsing of resource
12083 Code and Data Size: Current core subsystem library sizes are shown
12084 below. These are the code and data sizes for the acpica.lib
12085 produced by the Microsoft Visual C++ 6.0 compiler, and these
12086 values do not include any ACPI driver or OSPM code. The debug
12087 version of the code includes the debug output trace mechanism and
12088 has a much larger code and data size. Note that these values will
12089 vary depending on the efficiency of the compiler and the compiler
12090 options used during generation.
12093 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12094 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12096 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12097 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12102 S3 fixes (Ole Rohne)
12104 Update ACPI PHP driver with to use new acpi_walk_resource API
12107 Add S4BIOS support (Pavel Machek)
12109 Map in entire table before performing checksum (John Stultz)
12111 Expand the mem= cmdline to allow the specification of reserved and
12112 ACPI DATA blocks (Pavel Machek)
12114 Never use ACPI on VISWS
12116 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
12118 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
12119 causing us to think that some systems support C2 when they really
12122 Do not count processor objects for non-present CPUs (Thanks to
12128 Fixed a problem where ASL include files could not be found and
12131 Added support for the _PDC reserved name.
12134 ----------------------------------------
12135 22 January 2003. Summary of changes for version 20030122.
12138 1) ACPI CA Core Subsystem:
12140 Added a check for constructs of the form: Store (Local0, Local0)
12141 where Local0 is not initialized. Apparently, some BIOS
12142 programmers believe that this is a NOOP. Since this store doesn't
12143 do anything anyway, the new prototype behavior will ignore this
12144 error. This is a case where we can relax the strict checking in
12145 the interpreter in the name of compatibility.
12150 The AcpiSrc Source Conversion Utility has been released with the
12151 Linux package for the first time. This is the utility that is
12152 used to convert the ACPI CA base source code to the Linux version.
12154 (Both) Handle P_BLK lengths shorter than 6 more gracefully
12156 (Both) Move more headers to include/acpi, and delete an unused
12159 (Both) Move drivers/acpi/include directory to include/acpi
12161 (Both) Boot functions don't use cmdline, so don't pass it around
12163 (Both) Remove include of unused header (Adrian Bunk)
12165 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
12167 former now also includes the latter, acpiphp.h only needs the one,
12170 (2.5) Make it possible to select method of bios restoring after S3
12171 resume. [=> no more ugly ifdefs] (Pavel Machek)
12173 (2.5) Make proc write interfaces work (Pavel Machek)
12175 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
12177 (2.5) Break out ACPI Perf code into its own module, under cpufreq
12178 (Dominik Brodowski)
12180 (2.4) S4BIOS support (Ducrot Bruno)
12182 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
12188 Added support to disassemble SSDT and PSDTs.
12190 Implemented support to obtain SSDTs from the Windows registry if
12194 ----------------------------------------
12195 09 January 2003. Summary of changes for version 20030109.
12197 1) ACPI CA Core Subsystem:
12199 Changed the behavior of the internal Buffer-to-String conversion
12200 function. The current ACPI specification states that the contents
12201 of the buffer are "converted to a string of two-character
12202 hexadecimal numbers, each separated by a space". Unfortunately,
12203 this definition is not backwards compatible with existing ACPI 1.0
12204 implementations (although the behavior was not defined in the ACPI
12205 1.0 specification). The new behavior simply copies data from the
12206 buffer to the string until a null character is found or the end of
12207 the buffer is reached. The new String object is always null
12208 terminated. This problem was seen during the generation of _BIF
12209 battery data where incorrect strings were returned for battery
12210 type, etc. This will also require an errata to the ACPI
12213 Renamed all instances of NATIVE_UINT and NATIVE_INT to
12214 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
12216 Copyright in all module headers (both Linux and non-Linux) has be
12219 Code and Data Size: Current core subsystem library sizes are shown
12220 below. These are the code and data sizes for the acpica.lib
12221 produced by the Microsoft Visual C++ 6.0 compiler, and these
12222 values do not include any ACPI driver or OSPM code. The debug
12223 version of the code includes the debug output trace mechanism and
12224 has a much larger code and data size. Note that these values will
12225 vary depending on the efficiency of the compiler and the compiler
12226 options used during generation.
12229 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12230 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12232 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12233 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12238 Fixed an oops on module insertion/removal (Matthew Tippett)
12240 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
12242 (2.5) Replace pr_debug (Randy Dunlap)
12244 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
12246 (Both) Eliminate spawning of thread from timer callback, in favor
12249 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
12251 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
12253 (Both) Add missing statics to button.c (Pavel Machek)
12255 Several changes have been made to the source code translation
12256 utility that generates the Linux Code in order to make the code
12259 All typedefs on structs and unions have been removed in keeping
12260 with the Linux coding style.
12262 Removed the non-Linux SourceSafe module revision number from each
12265 Completed major overhaul of symbols to be lowercased for linux.
12266 Doubled the number of symbols that are lowercased.
12268 Fixed a problem where identifiers within procedure headers and
12269 within quotes were not fully lower cased (they were left with a
12272 Some C macros whose only purpose is to allow the generation of 16-
12273 bit code are now completely removed in the Linux code, increasing
12274 readability and maintainability.
12276 ----------------------------------------
12278 12 December 2002. Summary of changes for version 20021212.
12281 1) ACPI CA Core Subsystem:
12283 Fixed a problem where the creation of a zero-length AML Buffer
12284 would cause a fault.
12286 Fixed a problem where a Buffer object that pointed to a static AML
12287 buffer (in an ACPI table) could inadvertently be deleted, causing
12290 Fixed a problem where a user buffer (passed in to the external
12291 ACPI CA interfaces) could be overwritten if the buffer was too
12292 small to complete the operation, causing memory corruption.
12294 Fixed a problem in the Buffer-to-String conversion code where a
12295 string of length one was always returned, regardless of the size
12296 of the input Buffer object.
12298 Removed the NATIVE_CHAR data type across the entire source due to
12299 lack of need and lack of consistent use.
12301 Code and Data Size: Current core subsystem library sizes are shown
12302 below. These are the code and data sizes for the acpica.lib
12303 produced by the Microsoft Visual C++ 6.0 compiler, and these
12304 values do not include any ACPI driver or OSPM code. The debug
12305 version of the code includes the debug output trace mechanism and
12306 has a much larger code and data size. Note that these values will
12307 vary depending on the efficiency of the compiler and the compiler
12308 options used during generation.
12311 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12312 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12314 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12315 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12318 ----------------------------------------
12319 05 December 2002. Summary of changes for version 20021205.
12321 1) ACPI CA Core Subsystem:
12323 Fixed a problem where a store to a String or Buffer object could
12324 cause corruption of the DSDT if the object type being stored was
12325 the same as the target object type and the length of the object
12326 being stored was equal to or smaller than the original (existing)
12327 target object. This was seen to cause corruption of battery _BIF
12328 buffers if the _BIF method modified the buffer on the fly.
12330 Fixed a problem where an internal error was generated if a control
12331 method invocation was used in an OperationRegion, Buffer, or
12332 Package declaration. This was caused by the deferred parsing of
12333 the control method and thus the deferred creation of the internal
12334 method object. The solution to this problem was to create the
12335 internal method object at the moment the method is encountered in
12336 the first pass - so that subsequent references to the method will
12337 able to obtain the required parameter count and thus properly
12338 parse the method invocation. This problem presented itself as an
12339 AE_AML_INTERNAL during the pass 1 parse phase during table load.
12341 Fixed a problem where the internal String object copy routine did
12342 not always allocate sufficient memory for the target String object
12343 and caused memory corruption. This problem was seen to cause
12344 "Allocation already present in list!" errors as memory allocation
12347 Implemented a new function for the evaluation of namespace objects
12348 that allows the specification of the allowable return object
12349 types. This simplifies a lot of code that checks for a return
12350 object of one or more specific objects returned from the
12351 evaluation (such as _STA, etc.) This may become and external
12352 function if it would be useful to ACPI-related drivers.
12354 Completed another round of prefixing #defines with "ACPI_" for
12357 Completed additional code restructuring to allow more modular
12358 linking for iASL compiler and AcpiExec. Several files were split
12359 creating new files. New files: nsparse.c dsinit.c evgpe.c
12361 Implemented an abort mechanism to terminate an executing control
12362 method via the AML debugger. This feature is useful for debugging
12363 control methods that depend (wait) for specific hardware
12366 Code and Data Size: Current core subsystem library sizes are shown
12367 below. These are the code and data sizes for the acpica.lib
12368 produced by the Microsoft Visual C++ 6.0 compiler, and these
12369 values do not include any ACPI driver or OSPM code. The debug
12370 version of the code includes the debug output trace mechanism and
12371 has a much larger code and data size. Note that these values will
12372 vary depending on the efficiency of the compiler and the compiler
12373 options used during generation.
12376 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12377 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12379 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12380 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12383 2) iASL Compiler/Disassembler
12385 Fixed a compiler code generation problem for "Interrupt" Resource
12386 Descriptors. If specified in the ASL, the optional "Resource
12387 Source Index" and "Resource Source" fields were not inserted into
12388 the correct location within the AML resource descriptor, creating
12389 an invalid descriptor.
12391 Fixed a disassembler problem for "Interrupt" resource descriptors.
12392 The optional "Resource Source Index" and "Resource Source" fields
12396 ----------------------------------------
12397 22 November 2002. Summary of changes for version 20021122.
12400 1) ACPI CA Core Subsystem:
12402 Fixed a reported problem where an object stored to a Method Local
12403 or Arg was not copied to a new object during the store - the
12404 object pointer was simply copied to the Local/Arg. This caused
12405 all subsequent operations on the Local/Arg to also affect the
12406 original source of the store operation.
12408 Fixed a problem where a store operation to a Method Local or Arg
12409 was not completed properly if the Local/Arg contained a reference
12410 (from RefOf) to a named field. The general-purpose store-to-
12411 namespace-node code is now used so that this case is handled
12414 Fixed a problem where the internal object copy routine would cause
12415 a protection fault if the object being copied was a Package and
12416 contained either 1) a NULL package element or 2) a nested sub-
12419 Fixed a problem with the GPE initialization that resulted from an
12420 ambiguity in the ACPI specification. One section of the
12421 specification states that both the address and length of the GPE
12422 block must be zero if the block is not supported. Another section
12423 implies that only the address need be zero if the block is not
12424 supported. The code has been changed so that both the address and
12425 the length must be non-zero to indicate a valid GPE block (i.e.,
12426 if either the address or the length is zero, the GPE block is
12429 Code and Data Size: Current core subsystem library sizes are shown
12430 below. These are the code and data sizes for the acpica.lib
12431 produced by the Microsoft Visual C++ 6.0 compiler, and these
12432 values do not include any ACPI driver or OSPM code. The debug
12433 version of the code includes the debug output trace mechanism and
12434 has a much larger code and data size. Note that these values will
12435 vary depending on the efficiency of the compiler and the compiler
12436 options used during generation.
12439 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12440 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12442 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12443 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12448 Cleaned up EC driver. Exported an external EC read/write
12449 interface. By going through this, other drivers (most notably
12450 sonypi) will be able to serialize access to the EC.
12453 3) iASL Compiler/Disassembler
12455 Implemented support to optionally generate include files for both
12456 ASM and C (the -i switch). This simplifies BIOS development by
12457 automatically creating include files that contain external
12458 declarations for the symbols that are created within the
12460 (optionally generated) ASM and C AML source files.
12463 ----------------------------------------
12464 15 November 2002. Summary of changes for version 20021115.
12466 1) ACPI CA Core Subsystem:
12468 Fixed a memory leak problem where an error during resolution of
12470 method arguments during a method invocation from another method
12471 failed to cleanup properly by deleting all successfully resolved
12474 Fixed a problem where the target of the Index() operator was not
12475 correctly constructed if the source object was a package. This
12476 problem has not been detected because the use of a target operand
12477 with Index() is very rare.
12479 Fixed a problem with the Index() operator where an attempt was
12480 made to delete the operand objects twice.
12482 Fixed a problem where an attempt was made to delete an operand
12483 twice during execution of the CondRefOf() operator if the target
12486 Implemented the first of perhaps several internal create object
12487 functions that create and initialize a specific object type. This
12488 consolidates duplicated code wherever the object is created, thus
12489 shrinking the size of the subsystem.
12491 Implemented improved debug/error messages for errors that occur
12492 during nested method invocations. All executing method pathnames
12493 are displayed (with the error) as the call stack is unwound - thus
12496 Fixed a problem introduced in the 10/02 release that caused
12497 premature deletion of a buffer object if a buffer was used as an
12498 ASL operand where an integer operand is required (Thus causing an
12499 implicit object conversion from Buffer to Integer.) The change in
12500 the 10/02 release was attempting to fix a memory leak (albeit
12503 Code and Data Size: Current core subsystem library sizes are shown
12504 below. These are the code and data sizes for the acpica.lib
12505 produced by the Microsoft Visual C++ 6.0 compiler, and these
12506 values do not include any ACPI driver or OSPM code. The debug
12507 version of the code includes the debug output trace mechanism and
12508 has a much larger code and data size. Note that these values will
12509 vary depending on the efficiency of the compiler and the compiler
12510 options used during generation.
12513 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12514 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12516 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12517 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12522 Changed the implementation of the ACPI semaphores to use down()
12523 instead of down_interruptable(). It is important that the
12524 execution of ACPI control methods not be interrupted by signals.
12525 Methods must run to completion, or the system may be left in an
12526 unknown/unstable state.
12528 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
12532 3) iASL Compiler/Disassembler
12535 Changed the default location of output files. All output files
12536 are now placed in the current directory by default instead of in
12537 the directory of the source file. This change may affect some
12538 existing makefiles, but it brings the behavior of the compiler in
12539 line with other similar tools. The location of the output files
12540 can be overridden with the -p command line switch.
12543 ----------------------------------------
12544 11 November 2002. Summary of changes for version 20021111.
12547 0) ACPI Specification 2.0B is released and is now available at:
12548 http://www.acpi.info/index.html
12551 1) ACPI CA Core Subsystem:
12553 Implemented support for the ACPI 2.0 SMBus Operation Regions.
12554 This includes the early detection and handoff of the request to
12555 the SMBus region handler (avoiding all of the complex field
12556 support code), and support for the bidirectional return packet
12557 from an SMBus write operation. This paves the way for the
12558 development of SMBus drivers in each host operating system.
12560 Fixed a problem where the semaphore WAIT_FOREVER constant was
12561 defined as 32 bits, but must be 16 bits according to the ACPI
12562 specification. This had the side effect of causing ASL
12563 Mutex/Event timeouts even though the ASL code requested a wait
12564 forever. Changed all internal references to the ACPI timeout
12565 parameter to 16 bits to prevent future problems. Changed the name
12566 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
12568 Code and Data Size: Current core subsystem library sizes are shown
12569 below. These are the code and data sizes for the acpica.lib
12570 produced by the Microsoft Visual C++ 6.0 compiler, and these
12571 values do not include any ACPI driver or OSPM code. The debug
12572 version of the code includes the debug output trace mechanism and
12573 has a much larger code and data size. Note that these values will
12574 vary depending on the efficiency of the compiler and the compiler
12575 options used during generation.
12578 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12579 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12581 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12582 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12587 Module loading/unloading fixes (John Cagle)
12590 3) iASL Compiler/Disassembler
12592 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
12594 Implemented support for the disassembly of all SMBus protocol
12595 keywords (SMBQuick, SMBWord, etc.)
12597 ----------------------------------------
12598 01 November 2002. Summary of changes for version 20021101.
12601 1) ACPI CA Core Subsystem:
12603 Fixed a problem where platforms that have a GPE1 block but no GPE0
12604 block were not handled correctly. This resulted in a "GPE
12605 overlap" error message. GPE0 is no longer required.
12607 Removed code added in the previous release that inserted nodes
12608 into the namespace in alphabetical order. This caused some side-
12609 effects on various machines. The root cause of the problem is
12610 still under investigation since in theory, the internal ordering
12611 of the namespace nodes should not matter.
12614 Enhanced error reporting for the case where a named object is not
12615 found during control method execution. The full ACPI namepath
12616 (name reference) of the object that was not found is displayed in
12619 Note: as a result of the overhaul of the namespace object types in
12620 the previous release, the namespace nodes for the predefined
12621 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
12622 instead of ACPI_TYPE_ANY. This simplifies the namespace
12623 management code but may affect code that walks the namespace tree
12624 looking for specific object types.
12626 Code and Data Size: Current core subsystem library sizes are shown
12627 below. These are the code and data sizes for the acpica.lib
12628 produced by the Microsoft Visual C++ 6.0 compiler, and these
12629 values do not include any ACPI driver or OSPM code. The debug
12630 version of the code includes the debug output trace mechanism and
12631 has a much larger code and data size. Note that these values will
12632 vary depending on the efficiency of the compiler and the compiler
12633 options used during generation.
12636 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12637 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12639 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12640 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12645 Fixed a problem introduced in the previous release where the
12646 Processor and Thermal objects were not recognized and installed in
12647 /proc. This was related to the scope type change described above.
12650 3) iASL Compiler/Disassembler
12652 Implemented the -g option to get all of the required ACPI tables
12653 from the registry and save them to files (Windows version of the
12654 compiler only.) The required tables are the FADT, FACS, and DSDT.
12656 Added ACPI table checksum validation during table disassembly in
12657 order to catch corrupted tables.
12660 ----------------------------------------
12661 22 October 2002. Summary of changes for version 20021022.
12663 1) ACPI CA Core Subsystem:
12665 Implemented a restriction on the Scope operator that the target
12666 must already exist in the namespace at the time the operator is
12667 encountered (during table load or method execution). In other
12668 words, forward references are not allowed and Scope() cannot
12669 create a new object. This changes the previous behavior where the
12670 interpreter would create the name if not found. This new behavior
12671 correctly enables the search-to-root algorithm during namespace
12672 lookup of the target name. Because of this upsearch, this fixes
12673 the known Compaq _SB_.OKEC problem and makes both the AML
12674 interpreter and iASL compiler compatible with other ACPI
12677 Completed a major overhaul of the internal ACPI object types for
12678 the ACPI Namespace and the associated operand objects. Many of
12679 these types had become obsolete with the introduction of the two-
12680 pass namespace load. This cleanup simplifies the code and makes
12681 the entire namespace load mechanism much clearer and easier to
12684 Improved debug output for tracking scope opening/closing to help
12685 diagnose scoping issues. The old scope name as well as the new
12686 scope name are displayed. Also improved error messages for
12687 problems with ASL Mutex objects and error messages for GPE
12690 Cleaned up the namespace dump code, removed obsolete code.
12692 All string output (for all namespace/object dumps) now uses the
12693 common ACPI string output procedure which handles escapes properly
12694 and does not emit non-printable characters.
12696 Fixed some issues with constants in the 64-bit version of the
12697 local C library (utclib.c)
12702 EC Driver: No longer attempts to acquire the Global Lock at
12706 3) iASL Compiler/Disassembler
12708 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12709 2 opcodes outside of a control method. This means that the
12710 "executable" operators (versus the "namespace" operators) cannot
12711 be used at the table level; they can only be used within a control
12714 Implemented the restriction on the Scope() operator where the
12715 target must already exist in the namespace at the time the
12716 operator is encountered (during ASL compilation). In other words,
12717 forward references are not allowed and Scope() cannot create a new
12718 object. This makes the iASL compiler compatible with other ACPI
12719 implementations and makes the Scope() implementation adhere to the
12720 ACPI specification.
12722 Fixed a problem where namepath optimization for the Alias operator
12723 was optimizing the wrong path (of the two namepaths.) This caused
12724 a "Missing alias link" error message.
12726 Fixed a problem where an "unknown reserved name" warning could be
12727 incorrectly generated for names like "_SB" when the trailing
12728 underscore is not used in the original ASL.
12730 Fixed a problem where the reserved name check did not handle
12731 NamePaths with multiple NameSegs correctly. The first nameseg of
12732 the NamePath was examined instead of the last NameSeg.
12735 ----------------------------------------
12737 02 October 2002. Summary of changes for this release.
12740 1) ACPI CA Core Subsystem version 20021002:
12742 Fixed a problem where a store/copy of a string to an existing
12743 string did not always set the string length properly in the String
12746 Fixed a reported problem with the ToString operator where the
12747 behavior was identical to the ToHexString operator instead of just
12748 simply converting a raw buffer to a string data type.
12750 Fixed a problem where CopyObject and the other "explicit"
12751 conversion operators were not updating the internal namespace node
12752 type as part of the store operation.
12754 Fixed a memory leak during implicit source operand conversion
12755 where the original object was not deleted if it was converted to a
12756 new object of a different type.
12758 Enhanced error messages for all problems associated with namespace
12759 lookups. Common procedure generates and prints the lookup name as
12760 well as the formatted status.
12762 Completed implementation of a new design for the Alias support
12763 within the namespace. The existing design did not handle the case
12764 where a new object was assigned to one of the two names due to the
12765 use of an explicit conversion operator, resulting in the two names
12766 pointing to two different objects. The new design simply points
12767 the Alias name to the original name node - not to the object.
12768 This results in a level of indirection that must be handled in the
12769 name resolution mechanism.
12771 Code and Data Size: Current core subsystem library sizes are shown
12772 below. These are the code and data sizes for the acpica.lib
12773 produced by the Microsoft Visual C++ 6.0 compiler, and these
12774 values do not include any ACPI driver or OSPM code. The debug
12775 version of the code includes the debug output trace mechanism and
12776 has a larger code and data size. Note that these values will vary
12777 depending on the efficiency of the compiler and the compiler
12778 options used during generation.
12781 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12782 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12784 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12785 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12790 Initialize thermal driver's timer before it is used. (Knut
12793 Allow handling negative celsius values. (Kochi Takayoshi)
12795 Fix thermal management and make trip points. R/W (Pavel Machek)
12797 Fix /proc/acpi/sleep. (P. Christeas)
12799 IA64 fixes. (David Mosberger)
12801 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12803 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12807 3) iASL Compiler/Disassembler
12809 Clarified some warning/error messages.
12812 ----------------------------------------
12813 18 September 2002. Summary of changes for this release.
12816 1) ACPI CA Core Subsystem version 20020918:
12818 Fixed a reported problem with reference chaining (via the Index()
12819 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12820 The definition of these operators includes the dereferencing of
12821 all chained references to return information on the base object.
12823 Fixed a problem with stores to indexed package elements - the
12824 existing code would not complete the store if an "implicit
12825 conversion" was not performed. In other words, if the existing
12826 object (package element) was to be replaced completely, the code
12827 didn't handle this case.
12829 Relaxed typechecking on the ASL "Scope" operator to allow the
12830 target name to refer to an object of type Integer, String, or
12831 Buffer, in addition to the scoping object types (Device,
12832 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12833 This allows existing AML code that has workarounds for a bug in
12834 Windows to function properly. A warning is issued, however. This
12835 affects both the AML interpreter and the iASL compiler. Below is
12836 an example of this type of ASL code:
12842 Fixed some reported problems with 64-bit integer support in the
12843 local implementation of C library functions (clib.c)
12848 Use ACPI fix map region instead of IOAPIC region, since it is
12849 undefined in non-SMP.
12851 Ensure that the SCI has the proper polarity and trigger, even on
12852 systems that do not have an interrupt override entry in the MADT.
12854 2.5 big driver reorganization (Pat Mochel)
12856 Use early table mapping code from acpitable.c (Andi Kleen)
12858 New blacklist entries (Andi Kleen)
12860 Blacklist improvements. Split blacklist code out into a separate
12861 file. Move checking the blacklist to very early. Previously, we
12862 would use ACPI tables, and then halfway through init, check the
12863 blacklist -- too late. Now, it's early enough to completely fall-
12867 3) iASL Compiler/Disassembler version 20020918:
12869 Fixed a problem where the typechecking code didn't know that an
12870 alias could point to a method. In other words, aliases were not
12871 being dereferenced during typechecking.
12874 ----------------------------------------
12875 29 August 2002. Summary of changes for this release.
12877 1) ACPI CA Core Subsystem Version 20020829:
12879 If the target of a Scope() operator already exists, it must be an
12880 object type that actually opens a scope -- such as a Device,
12881 Method, Scope, etc. This is a fatal runtime error. Similar error
12882 check has been added to the iASL compiler also.
12884 Tightened up the namespace load to disallow multiple names in the
12885 same scope. This previously was allowed if both objects were of
12886 the same type. (i.e., a lookup was the same as entering a new
12892 Ensure that the ACPI interrupt has the proper trigger and
12895 local_irq_disable is extraneous. (Matthew Wilcox)
12897 Make "acpi=off" actually do what it says, and not use the ACPI
12898 interpreter *or* the tables.
12900 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12904 3) iASL Compiler/Disassembler Version 20020829:
12906 Implemented namepath optimization for name declarations. For
12907 example, a declaration like "Method (\_SB_.ABCD)" would get
12908 optimized to "Method (ABCD)" if the declaration is within the
12909 \_SB_ scope. This optimization is in addition to the named
12910 reference path optimization first released in the previous
12911 version. This would seem to complete all possible optimizations
12912 for namepaths within the ASL/AML.
12914 If the target of a Scope() operator already exists, it must be an
12915 object type that actually opens a scope -- such as a Device,
12916 Method, Scope, etc.
12918 Implemented a check and warning for unreachable code in the same
12919 block below a Return() statement.
12921 Fixed a problem where the listing file was not generated if the
12922 compiler aborted if the maximum error count was exceeded (200).
12924 Fixed a problem where the typechecking of method return values was
12925 broken. This includes the check for a return value when the
12926 method is invoked as a TermArg (a return value is expected.)
12928 Fixed a reported problem where EOF conditions during a quoted
12929 string or comment caused a fault.
12932 ----------------------------------------
12933 15 August 2002. Summary of changes for this release.
12935 1) ACPI CA Core Subsystem Version 20020815:
12937 Fixed a reported problem where a Store to a method argument that
12938 contains a reference did not perform the indirect store correctly.
12939 This problem was created during the conversion to the new
12940 reference object model - the indirect store to a method argument
12941 code was not updated to reflect the new model.
12943 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12944 handle corner cases, and improve code legibility (Kochi Takayoshi)
12946 Fixed a problem with the pathname parsing for the carat (^)
12947 prefix. The heavy use of the carat operator by the new namepath
12948 optimization in the iASL compiler uncovered a problem with the AML
12949 interpreter handling of this prefix. In the case where one or
12950 more carats precede a single nameseg, the nameseg was treated as
12951 standalone and the search rule (to root) was inadvertently
12952 applied. This could cause both the iASL compiler and the
12953 interpreter to find the wrong object or to miss the error that
12954 should occur if the object does not exist at that exact pathname.
12956 Found and fixed the problem where the HP Pavilion DSDT would not
12957 load. This was a relatively minor tweak to the table loading code
12958 (a problem caused by the unexpected encounter with a method
12959 invocation not within a control method), but it does not solve the
12960 overall issue of the execution of AML code at the table level.
12961 This investigation is still ongoing.
12963 Code and Data Size: Current core subsystem library sizes are shown
12964 below. These are the code and data sizes for the acpica.lib
12965 produced by the Microsoft Visual C++ 6.0 compiler, and these
12966 values do not include any ACPI driver or OSPM code. The debug
12967 version of the code includes the debug output trace mechanism and
12968 has a larger code and data size. Note that these values will vary
12969 depending on the efficiency of the compiler and the compiler
12970 options used during generation.
12973 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12974 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12976 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12977 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12982 Remove redundant slab.h include (Brad Hards)
12984 Fix several bugs in thermal.c (Herbert Nachtnebel)
12986 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12988 Change acpi_system_suspend to use updated irq functions (Pavel
12991 Export acpi_get_firmware_table (Matthew Wilcox)
12993 Use proper root proc entry for ACPI (Kochi Takayoshi)
12995 Fix early-boot table parsing (Bjorn Helgaas)
12998 3) iASL Compiler/Disassembler
13000 Reworked the compiler options to make them more consistent and to
13001 use two-letter options where appropriate. We were running out of
13002 sensible letters. This may break some makefiles, so check the
13003 current options list by invoking the compiler with no parameters.
13005 Completed the design and implementation of the ASL namepath
13006 optimization option for the compiler. This option optimizes all
13007 references to named objects to the shortest possible path. The
13008 first attempt tries to utilize a single nameseg (4 characters) and
13009 the "search-to-root" algorithm used by the interpreter. If that
13010 cannot be used (because either the name is not in the search path
13011 or there is a conflict with another object with the same name),
13012 the pathname is optimized using the carat prefix (usually a
13013 shorter string than specifying the entire path from the root.)
13015 Implemented support to obtain the DSDT from the Windows registry
13016 (when the disassembly option is specified with no input file).
13017 Added this code as the implementation for AcpiOsTableOverride in
13018 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
13019 utility) to scan memory for the DSDT to the AcpiOsTableOverride
13020 function in the DOS OSL to make the disassembler truly OS
13023 Implemented a new option to disassemble and compile in one step.
13024 When used without an input filename, this option will grab the
13025 DSDT from the local machine, disassemble it, and compile it in one
13028 Added a warning message for invalid escapes (a backslash followed
13029 by any character other than the allowable escapes). This catches
13030 the quoted string error "\_SB_" (which should be "\\_SB_" ).
13032 Also, there are numerous instances in the ACPI specification where
13035 Added a compiler option to disable all optimizations. This is
13036 basically the "compatibility mode" because by using this option,
13037 the AML code will come out exactly the same as other ASL
13040 Added error messages for incorrectly ordered dependent resource
13041 functions. This includes: missing EndDependentFn macro at end of
13042 dependent resource list, nested dependent function macros (both
13043 start and end), and missing StartDependentFn macro. These are
13044 common errors that should be caught at compile time.
13046 Implemented _OSI support for the disassembler and compiler. _OSI
13047 must be included in the namespace for proper disassembly (because
13048 the disassembler must know the number of arguments.)
13050 Added an "optimization" message type that is optional (off by
13051 default). This message is used for all optimizations - including
13052 constant folding, integer optimization, and namepath optimization.
13054 ----------------------------------------
13055 25 July 2002. Summary of changes for this release.
13058 1) ACPI CA Core Subsystem Version 20020725:
13060 The AML Disassembler has been enhanced to produce compilable ASL
13061 code and has been integrated into the iASL compiler (see below) as
13062 well as the single-step disassembly for the AML debugger and the
13063 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
13064 resource templates and macros are fully supported. The
13065 disassembler has been tested on over 30 different AML files,
13066 producing identical AML when the resulting disassembled ASL file
13067 is recompiled with the same ASL compiler.
13069 Modified the Resource Manager to allow zero interrupts and zero
13070 dma channels during the GetCurrentResources call. This was
13071 causing problems on some platforms.
13073 Added the AcpiOsRedirectOutput interface to the OSL to simplify
13074 output redirection for the AcpiOsPrintf and AcpiOsVprintf
13077 Code and Data Size: Current core subsystem library sizes are shown
13078 below. These are the code and data sizes for the acpica.lib
13079 produced by the Microsoft Visual C++ 6.0 compiler, and these
13080 values do not include any ACPI driver or OSPM code. The debug
13081 version of the code includes the debug output trace mechanism and
13082 has a larger code and data size. Note that these values will vary
13083 depending on the efficiency of the compiler and the compiler
13084 options used during generation.
13087 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13088 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13090 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13091 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13096 Fixed a panic in the EC driver (Dominik Brodowski)
13098 Implemented checksum of the R/XSDT itself during Linux table scan
13104 The AML disassembler is integrated into the compiler. The "-d"
13105 option invokes the disassembler to completely disassemble an
13106 input AML file, producing as output a text ASL file with the
13107 extension ".dsl" (to avoid name collisions with existing .asl
13108 source files.) A future enhancement will allow the disassembler
13109 to obtain the BIOS DSDT from the registry under Windows.
13111 Fixed a problem with the VendorShort and VendorLong resource
13112 descriptors where an invalid AML sequence was created.
13114 Implemented a fix for BufferData term in the ASL parser. It was
13115 inadvertently defined twice, allowing invalid syntax to pass and
13116 causing reduction conflicts.
13118 Fixed a problem where the Ones opcode could get converted to a
13119 value of zero if "Ones" was used where a byte, word or dword value
13120 was expected. The 64-bit value is now truncated to the correct
13121 size with the correct value.
13125 ----------------------------------------
13126 02 July 2002. Summary of changes for this release.
13129 1) ACPI CA Core Subsystem Version 20020702:
13131 The Table Manager code has been restructured to add several new
13132 features. Tables that are not required by the core subsystem
13133 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
13134 validated in any way and are returned from AcpiGetFirmwareTable if
13135 requested. The AcpiOsTableOverride interface is now called for
13136 each table that is loaded by the subsystem in order to allow the
13137 host to override any table it chooses. Previously, only the DSDT
13138 could be overridden. Added one new files, tbrsdt.c and
13141 Fixed a problem with the conversion of internal package objects to
13142 external objects (when a package is returned from a control
13143 method.) The return buffer length was set to zero instead of the
13144 proper length of the package object.
13146 Fixed a reported problem with the use of the RefOf and DeRefOf
13147 operators when passing reference arguments to control methods. A
13148 new type of Reference object is used internally for references
13149 produced by the RefOf operator.
13151 Added additional error messages in the Resource Manager to explain
13152 AE_BAD_DATA errors when they occur during resource parsing.
13154 Split the AcpiEnableSubsystem into two primitives to enable a
13155 finer granularity initialization sequence. These two calls should
13156 be called in this order: AcpiEnableSubsystem (flags),
13157 AcpiInitializeObjects (flags). The flags parameter remains the
13163 Updated the ACPI utilities module to understand the new style of
13164 fully resolved package objects that are now returned from the core
13165 subsystem. This eliminates errors of the form:
13167 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
13168 acpi_utils-0430 [145] acpi_evaluate_reference:
13169 Invalid element in package (not a device reference)
13171 The method evaluation utility uses the new buffer allocation
13172 scheme instead of calling AcpiEvaluate Object twice.
13174 Added support for ECDT. This allows the use of the Embedded
13176 Controller before the namespace has been fully initialized, which
13177 is necessary for ACPI 2.0 support, and for some laptops to
13178 initialize properly. (Laptops using ECDT are still rare, so only
13179 limited testing was performed of the added functionality.)
13181 Fixed memory leaks in the EC driver.
13183 Eliminated a brittle code structure in acpi_bus_init().
13185 Eliminated the acpi_evaluate() helper function in utils.c. It is
13186 no longer needed since acpi_evaluate_object can optionally
13187 allocate memory for the return object.
13189 Implemented fix for keyboard hang when getting battery readings on
13190 some systems (Stephen White)
13192 PCI IRQ routing update (Dominik Brodowski)
13194 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
13197 ----------------------------------------
13198 11 June 2002. Summary of changes for this release.
13201 1) ACPI CA Core Subsystem Version 20020611:
13203 Fixed a reported problem where constants such as Zero and One
13204 appearing within _PRT packages were not handled correctly within
13205 the resource manager code. Originally reported against the ASL
13206 compiler because the code generator now optimizes integers to
13207 their minimal AML representation (i.e. AML constants if possible.)
13208 The _PRT code now handles all AML constant opcodes correctly
13209 (Zero, One, Ones, Revision).
13211 Fixed a problem with the Concatenate operator in the AML
13212 interpreter where a buffer result object was incorrectly marked as
13213 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
13215 All package sub-objects are now fully resolved before they are
13216 returned from the external ACPI interfaces. This means that name
13217 strings are resolved to object handles, and constant operators
13218 (Zero, One, Ones, Revision) are resolved to Integers.
13220 Implemented immediate resolution of the AML Constant opcodes
13221 (Zero, One, Ones, Revision) to Integer objects upon detection
13222 within the AML stream. This has simplified and reduced the
13223 generated code size of the subsystem by eliminating about 10
13224 switch statements for these constants (which previously were
13225 contained in Reference objects.) The complicating issues are that
13226 the Zero opcode is used as a "placeholder" for unspecified
13227 optional target operands and stores to constants are defined to be
13230 Code and Data Size: Current core subsystem library sizes are shown
13231 below. These are the code and data sizes for the acpica.lib
13232 produced by the Microsoft Visual C++ 6.0 compiler, and these
13233 values do not include any ACPI driver or OSPM code. The debug
13234 version of the code includes the debug output trace mechanism and
13235 has a larger code and data size. Note that these values will vary
13236 depending on the efficiency of the compiler and the compiler
13237 options used during generation.
13240 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13241 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13243 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13244 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13250 Added preliminary support for obtaining _TRA data for PCI root
13251 bridges (Bjorn Helgaas).
13254 3) iASL Compiler Version X2046:
13256 Fixed a problem where the "_DDN" reserved name was defined to be a
13257 control method with one argument. There are no arguments, and
13258 _DDN does not have to be a control method.
13260 Fixed a problem with the Linux version of the compiler where the
13261 source lines printed with error messages were the wrong lines.
13262 This turned out to be the "LF versus CR/LF" difference between
13263 Windows and Unix. This appears to be the longstanding issue
13264 concerning listing output and error messages.
13266 Fixed a problem with the Linux version of compiler where opcode
13267 names within error messages were wrong. This was caused by a
13268 slight difference in the output of the Flex tool on Linux versus
13271 Fixed a problem with the Linux compiler where the hex output files
13272 contained some garbage data caused by an internal buffer overrun.
13275 ----------------------------------------
13276 17 May 2002. Summary of changes for this release.
13279 1) ACPI CA Core Subsystem Version 20020517:
13281 Implemented a workaround to an BIOS bug discovered on the HP
13282 OmniBook where the FADT revision number and the table size are
13283 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
13284 behavior is to fallback to using only the ACPI 1.0 fields of the
13285 FADT if the table is too small to be a ACPI 2.0 table as claimed
13286 by the revision number. Although this is a BIOS bug, this is a
13287 case where the workaround is simple enough and with no side
13288 effects, so it seemed prudent to add it. A warning message is
13291 Implemented minimum size checks for the fixed-length ACPI tables -
13292 - the FADT and FACS, as well as consistency checks between the
13293 revision number and the table size.
13295 Fixed a reported problem in the table override support where the
13296 new table pointer was incorrectly treated as a physical address
13297 instead of a logical address.
13299 Eliminated the use of the AE_AML_ERROR exception and replaced it
13300 with more descriptive codes.
13302 Fixed a problem where an exception would occur if an ASL Field was
13303 defined with no named Field Units underneath it (used by some
13306 Code and Data Size: Current core subsystem library sizes are shown
13307 below. These are the code and data sizes for the acpica.lib
13308 produced by the Microsoft Visual C++ 6.0 compiler, and these
13309 values do not include any ACPI driver or OSPM code. The debug
13310 version of the code includes the debug output trace mechanism and
13311 has a larger code and data size. Note that these values will vary
13312 depending on the efficiency of the compiler and the compiler
13313 options used during generation.
13316 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13317 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13319 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13320 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13326 Much work done on ACPI init (MADT and PCI IRQ routing support).
13327 (Paul D. and Dominik Brodowski)
13329 Fix PCI IRQ-related panic on boot (Sam Revitch)
13331 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
13333 Fix "MHz" typo (Dominik Brodowski)
13335 Fix RTC year 2000 issue (Dominik Brodowski)
13337 Preclude multiple button proc entries (Eric Brunet)
13339 Moved arch-specific code out of include/platform/aclinux.h
13341 3) iASL Compiler Version X2044:
13343 Implemented error checking for the string used in the EISAID macro
13344 (Usually used in the definition of the _HID object.) The code now
13345 strictly enforces the PnP format - exactly 7 characters, 3
13346 uppercase letters and 4 hex digits.
13348 If a raw string is used in the definition of the _HID object
13349 (instead of the EISAID macro), the string must contain all
13350 alphanumeric characters (e.g., "*PNP0011" is not allowed because
13353 Implemented checking for invalid use of ACPI reserved names for
13354 most of the name creation operators (Name, Device, Event, Mutex,
13355 OperationRegion, PowerResource, Processor, and ThermalZone.)
13356 Previously, this check was only performed for control methods.
13358 Implemented an additional check on the Name operator to emit an
13359 error if a reserved name that must be implemented in ASL as a
13360 control method is used. We know that a reserved name must be a
13361 method if it is defined with input arguments.
13363 The warning emitted when a namespace object reference is not found
13364 during the cross reference phase has been changed into an error.
13365 The "External" directive should be used for names defined in other
13369 4) Tools and Utilities
13371 The 16-bit tools (adump16 and aexec16) have been regenerated and
13374 Fixed a problem with the output of both acpidump and adump16 where
13375 the indentation of closing parentheses and brackets was not
13377 aligned properly with the parent block.
13380 ----------------------------------------
13381 03 May 2002. Summary of changes for this release.
13384 1) ACPI CA Core Subsystem Version 20020503:
13386 Added support a new OSL interface that allows the host operating
13388 system software to override the DSDT found in the firmware -
13389 AcpiOsTableOverride. With this interface, the OSL can examine the
13390 version of the firmware DSDT and replace it with a different one
13393 Added new external interfaces for accessing ACPI registers from
13394 device drivers and other system software - AcpiGetRegister and
13395 AcpiSetRegister. This was simply an externalization of the
13396 existing AcpiHwBitRegister interfaces.
13398 Fixed a regression introduced in the previous build where the
13399 ASL/AML CreateField operator always returned an error,
13400 "destination must be a NS Node".
13402 Extended the maximum time (before failure) to successfully enable
13403 ACPI mode to 3 seconds.
13405 Code and Data Size: Current core subsystem library sizes are shown
13406 below. These are the code and data sizes for the acpica.lib
13407 produced by the Microsoft Visual C++ 6.0 compiler, and these
13408 values do not include any ACPI driver or OSPM code. The debug
13409 version of the code includes the debug output trace mechanism and
13410 has a larger code and data size. Note that these values will vary
13411 depending on the efficiency of the compiler and the compiler
13412 options used during generation.
13415 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13416 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13418 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13419 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13424 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
13425 free. While 3 out of 4 of our in-house systems work fine, the last
13426 one still hangs when testing the LAPIC timer.
13428 Renamed many files in 2.5 kernel release to omit "acpi_" from the
13431 Added warning on boot for Presario 711FR.
13433 Sleep improvements (Pavel Machek)
13435 ACPI can now be built without CONFIG_PCI enabled.
13437 IA64: Fixed memory map functions (JI Lee)
13440 3) iASL Compiler Version X2043:
13442 Added support to allow the compiler to be integrated into the MS
13443 VC++ development environment for one-button compilation of single
13444 files or entire projects -- with error-to-source-line mapping.
13446 Implemented support for compile-time constant folding for the
13447 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
13448 specification. This allows the ASL writer to use expressions
13449 instead of Integer/Buffer/String constants in terms that must
13450 evaluate to constants at compile time and will also simplify the
13451 emitted AML in any such sub-expressions that can be folded
13452 (evaluated at compile-time.) This increases the size of the
13453 compiler significantly because a portion of the ACPI CA AML
13454 interpreter is included within the compiler in order to pre-
13455 evaluate constant expressions.
13458 Fixed a problem with the "Unicode" ASL macro that caused the
13459 compiler to fault. (This macro is used in conjunction with the
13460 _STR reserved name.)
13462 Implemented an AML opcode optimization to use the Zero, One, and
13463 Ones opcodes where possible to further reduce the size of integer
13464 constants and thus reduce the overall size of the generated AML
13467 Implemented error checking for new reserved terms for ACPI version
13470 Implemented the -qr option to display the current list of ACPI
13471 reserved names known to the compiler.
13473 Implemented the -qc option to display the current list of ASL
13474 operators that are allowed within constant expressions and can
13475 therefore be folded at compile time if the operands are constants.
13480 Updated the Programmer's Reference for new interfaces, data types,
13481 and memory allocation model options.
13483 Updated the iASL Compiler User Reference to apply new format and
13484 add information about new features and options.
13486 ----------------------------------------
13487 19 April 2002. Summary of changes for this release.
13489 1) ACPI CA Core Subsystem Version 20020419:
13491 The source code base for the Core Subsystem has been completely
13492 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
13493 versions. The Lint option files used are included in the
13494 /acpi/generate/lint directory.
13496 Implemented enhanced status/error checking across the entire
13497 Hardware manager subsystem. Any hardware errors (reported from
13498 the OSL) are now bubbled up and will abort a running control
13502 Fixed a problem where the per-ACPI-table integer width (32 or 64)
13503 was stored only with control method nodes, causing a fault when
13504 non-control method code was executed during table loading. The
13505 solution implemented uses a global variable to indicate table
13506 width across the entire ACPI subsystem. Therefore, ACPI CA does
13507 not support mixed integer widths across different ACPI tables
13510 Fixed a problem where NULL extended fields (X fields) in an ACPI
13511 2.0 ACPI FADT caused the table load to fail. Although the
13512 existing ACPI specification is a bit fuzzy on this topic, the new
13513 behavior is to fall back on a ACPI 1.0 field if the corresponding
13514 ACPI 2.0 X field is zero (even though the table revision indicates
13515 a full ACPI 2.0 table.) The ACPI specification will be updated to
13516 clarify this issue.
13518 Fixed a problem with the SystemMemory operation region handler
13519 where memory was always accessed byte-wise even if the AML-
13520 specified access width was larger than a byte. This caused
13521 problems on systems with memory-mapped I/O. Memory is now
13522 accessed with the width specified. On systems that do not support
13523 non-aligned transfers, a check is made to guarantee proper address
13524 alignment before proceeding in order to avoid an AML-caused
13525 alignment fault within the kernel.
13528 Fixed a problem with the ExtendedIrq resource where only one byte
13529 of the 4-byte Irq field was extracted.
13531 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
13532 function was out of date and required a rewrite.
13534 Code and Data Size: Current core subsystem library sizes are shown
13535 below. These are the code and data sizes for the acpica.lib
13536 produced by the Microsoft Visual C++ 6.0 compiler, and these
13537 values do not include any ACPI driver or OSPM code. The debug
13538 version of the code includes the debug output trace mechanism and
13539 has a larger code and data size. Note that these values will vary
13540 depending on the efficiency of the compiler and the compiler
13541 options used during generation.
13544 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13545 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13547 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13548 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13553 PCI IRQ routing fixes (Dominik Brodowski)
13556 3) iASL Compiler Version X2042:
13558 Implemented an additional compile-time error check for a field
13559 unit whose size + minimum access width would cause a run-time
13560 access beyond the end-of-region. Previously, only the field size
13561 itself was checked.
13563 The Core subsystem and iASL compiler now share a common parse
13564 object in preparation for compile-time evaluation of the type
13565 3/4/5 ASL operators.
13568 ----------------------------------------
13569 Summary of changes for this release: 03_29_02
13571 1) ACPI CA Core Subsystem Version 20020329:
13573 Implemented support for late evaluation of TermArg operands to
13574 Buffer and Package objects. This allows complex expressions to be
13575 used in the declarations of these object types.
13577 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
13578 1.0, if the field was larger than 32 bits, it was returned as a
13579 buffer - otherwise it was returned as an integer. In ACPI 2.0,
13580 the field is returned as a buffer only if the field is larger than
13581 64 bits. The TableRevision is now considered when making this
13582 conversion to avoid incompatibility with existing ASL code.
13584 Implemented logical addressing for AcpiOsGetRootPointer. This
13585 allows an RSDP with either a logical or physical address. With
13586 this support, the host OS can now override all ACPI tables with
13587 one logical RSDP. Includes implementation of "typed" pointer
13588 support to allow a common data type for both physical and logical
13589 pointers internally. This required a change to the
13590 AcpiOsGetRootPointer interface.
13592 Implemented the use of ACPI 2.0 Generic Address Structures for all
13593 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
13594 mapped I/O for these ACPI features.
13596 Initialization now ignores not only non-required tables (All
13597 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
13598 not validate the table headers of unrecognized tables.
13600 Fixed a problem where a notify handler could only be
13601 installed/removed on an object of type Device. All "notify"
13603 objects are now supported -- Devices, Processor, Power, and
13606 Removed most verbosity from the ACPI_DB_INFO debug level. Only
13607 critical information is returned when this debug level is enabled.
13609 Code and Data Size: Current core subsystem library sizes are shown
13610 below. These are the code and data sizes for the acpica.lib
13611 produced by the Microsoft Visual C++ 6.0 compiler, and these
13612 values do not include any ACPI driver or OSPM code. The debug
13613 version of the code includes the debug output trace mechanism and
13614 has a larger code and data size. Note that these values will vary
13615 depending on the efficiency of the compiler and the compiler
13616 options used during generation.
13619 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13620 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13622 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13623 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13628 The processor driver (acpi_processor.c) now fully supports ACPI
13629 2.0-based processor performance control (e.g. Intel(R)
13630 SpeedStep(TM) technology) Note that older laptops that only have
13631 the Intel "applet" interface are not supported through this. The
13632 'limit' and 'performance' interface (/proc) are fully functional.
13633 [Note that basic policy for controlling performance state
13634 transitions will be included in the next version of ospmd.] The
13635 idle handler was modified to more aggressively use C2, and PIIX4
13636 errata handling underwent a complete overhaul (big thanks to
13637 Dominik Brodowski).
13639 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13640 based devices in the ACPI namespace are now dynamically bound
13641 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13642 This allows, among other things, ACPI to resolve bus numbers for
13643 subordinate PCI bridges.
13645 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13646 entries defined underneath PCI bridges.
13648 Added IBM 600E to bad bios list due to invalid _ADR value for
13649 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13651 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13652 (acpi.c, mpparse.c) -- stay tuned.
13654 Added back visual differentiation between fixed-feature and
13655 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13656 button/power/PWRF) to simplify button identification.
13658 We no longer use -Wno-unused when compiling debug. Please ignore
13659 any "_THIS_MODULE defined but not used" messages.
13661 Can now shut down the system using "magic sysrq" key.
13664 3) iASL Compiler version 2041:
13666 Fixed a problem where conversion errors for hex/octal/decimal
13667 constants were not reported.
13669 Implemented a fix for the General Register template Address field.
13670 This field was 8 bits when it should be 64.
13672 Fixed a problem where errors/warnings were no longer being emitted
13673 within the listing output file.
13675 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13676 exactly 4 characters, alphanumeric only.
13681 ----------------------------------------
13682 Summary of changes for this release: 03_08_02
13685 1) ACPI CA Core Subsystem Version 20020308:
13687 Fixed a problem with AML Fields where the use of the "AccessAny"
13688 keyword could cause an interpreter error due to attempting to read
13689 or write beyond the end of the parent Operation Region.
13691 Fixed a problem in the SystemMemory Operation Region handler where
13692 an attempt was made to map memory beyond the end of the region.
13693 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13694 errors on some Linux systems.
13696 Fixed a problem where the interpreter/namespace "search to root"
13697 algorithm was not functioning for some object types. Relaxed the
13698 internal restriction on the search to allow upsearches for all
13699 external object types as well as most internal types.
13704 We now use safe_halt() macro versus individual calls to sti | hlt.
13706 Writing to the processor limit interface should now work. "echo 1"
13707 will increase the limit, 2 will decrease, and 0 will reset to the
13714 Fixed segfault on Linux version.
13717 ----------------------------------------
13718 Summary of changes for this release: 02_25_02
13720 1) ACPI CA Core Subsystem:
13723 Fixed a problem where the GPE bit masks were not initialized
13724 properly, causing erratic GPE behavior.
13726 Implemented limited support for multiple calling conventions. The
13727 code can be generated with either the VPL (variable parameter
13728 list, or "C") convention, or the FPL (fixed parameter list, or
13729 "Pascal") convention. The core subsystem is about 3.4% smaller
13730 when generated with FPL.
13735 Re-add some /proc/acpi/event functionality that was lost during
13738 Resolved issue with /proc events for fixed-feature buttons showing
13739 up as the system device.
13741 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13743 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13745 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13747 Fixed limit interface & usage to fix bugs with passive cooling
13750 Restructured PRT support.
13753 ----------------------------------------
13754 Summary of changes for this label: 02_14_02
13757 1) ACPI CA Core Subsystem:
13759 Implemented support in AcpiLoadTable to allow loading of FACS and
13762 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13763 been removed. All 64-bit platforms should be migrated to the ACPI
13764 2.0 tables. The actbl71.h header has been removed from the source
13767 All C macros defined within the subsystem have been prefixed with
13768 "ACPI_" to avoid collision with other system include files.
13770 Removed the return value for the two AcpiOsPrint interfaces, since
13771 it is never used and causes lint warnings for ignoring the return
13774 Added error checking to all internal mutex acquire and release
13775 calls. Although a failure from one of these interfaces is
13776 probably a fatal system error, these checks will cause the
13777 immediate abort of the currently executing method or interface.
13779 Fixed a problem where the AcpiSetCurrentResources interface could
13780 fault. This was a side effect of the deployment of the new memory
13783 Fixed a couple of problems with the Global Lock support introduced
13784 in the last major build. The "common" (1.0/2.0) internal FACS was
13785 being overwritten with the FACS signature and clobbering the
13786 Global Lock pointer. Also, the actual firmware FACS was being
13787 unmapped after construction of the "common" FACS, preventing
13788 access to the actual Global Lock field within it. The "common"
13789 internal FACS is no longer installed as an actual ACPI table; it
13790 is used simply as a global.
13792 Code and Data Size: Current core subsystem library sizes are shown
13793 below. These are the code and data sizes for the acpica.lib
13794 produced by the Microsoft Visual C++ 6.0 compiler, and these
13795 values do not include any ACPI driver or OSPM code. The debug
13796 version of the code includes the debug output trace mechanism and
13797 has a larger code and data size. Note that these values will vary
13798 depending on the efficiency of the compiler and the compiler
13799 options used during generation.
13801 Previous Release (02_07_01)
13802 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13803 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13805 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13806 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13811 Updated Linux-specific code for core macro and OSL interface
13812 changes described above.
13814 Improved /proc/acpi/event. It now can be opened only once and has
13815 proper poll functionality.
13817 Fixed and restructured power management (acpi_bus).
13819 Only create /proc "view by type" when devices of that class exist.
13821 Fixed "charging/discharging" bug (and others) in acpi_battery.
13823 Improved thermal zone code.
13826 3) ASL Compiler, version X2039:
13829 Implemented the new compiler restriction on ASL String hex/octal
13830 escapes to non-null, ASCII values. An error results if an invalid
13831 value is used. (This will require an ACPI 2.0 specification
13834 AML object labels that are output to the optional C and ASM source
13835 are now prefixed with both the ACPI table signature and table ID
13836 to help guarantee uniqueness within a large BIOS project.
13839 ----------------------------------------
13840 Summary of changes for this label: 02_01_02
13842 1) ACPI CA Core Subsystem:
13844 ACPI 2.0 support is complete in the entire Core Subsystem and the
13845 ASL compiler. All new ACPI 2.0 operators are implemented and all
13846 other changes for ACPI 2.0 support are complete. With
13847 simultaneous code and data optimizations throughout the subsystem,
13848 ACPI 2.0 support has been implemented with almost no additional
13849 cost in terms of code and data size.
13851 Implemented a new mechanism for allocation of return buffers. If
13852 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13853 be allocated on behalf of the caller. Consolidated all return
13854 buffer validation and allocation to a common procedure. Return
13855 buffers will be allocated via the primary OSL allocation interface
13856 since it appears that a separate pool is not needed by most users.
13857 If a separate pool is required for these buffers, the caller can
13858 still use the original mechanism and pre-allocate the buffer(s).
13860 Implemented support for string operands within the DerefOf
13863 Restructured the Hardware and Event managers to be table driven,
13864 simplifying the source code and reducing the amount of generated
13867 Split the common read/write low-level ACPI register bitfield
13868 procedure into a separate read and write, simplifying the code
13871 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13872 used only a handful of times and didn't have enough critical mass
13873 for a separate interface. Replaced with a common calloc procedure
13876 Fixed a reported problem with the GPE number mapping mechanism
13877 that allows GPE1 numbers to be non-contiguous with GPE0.
13878 Reorganized the GPE information and shrunk a large array that was
13879 originally large enough to hold info for all possible GPEs (256)
13880 to simply large enough to hold all GPEs up to the largest GPE
13881 number on the machine.
13883 Fixed a reported problem with resource structure alignment on 64-
13886 Changed the AcpiEnableEvent and AcpiDisableEvent external
13887 interfaces to not require any flags for the common case of
13888 enabling/disabling a GPE.
13890 Implemented support to allow a "Notify" on a Processor object.
13892 Most TBDs in comments within the source code have been resolved
13896 Fixed a problem in the interpreter where a standalone parent
13897 prefix (^) was not handled correctly in the interpreter and
13900 Removed obsolete and unnecessary GPE save/restore code.
13902 Implemented Field support in the ASL Load operator. This allows a
13903 table to be loaded from a named field, in addition to loading a
13904 table directly from an Operation Region.
13906 Implemented timeout and handle support in the external Global Lock
13909 Fixed a problem in the AcpiDump utility where pathnames were no
13910 longer being generated correctly during the dump of named objects.
13912 Modified the AML debugger to give a full display of if/while
13913 predicates instead of just one AML opcode at a time. (The
13914 predicate can have several nested ASL statements.) The old method
13915 was confusing during single stepping.
13917 Code and Data Size: Current core subsystem library sizes are shown
13918 below. These are the code and data sizes for the acpica.lib
13919 produced by the Microsoft Visual C++ 6.0 compiler, and these
13920 values do not include any ACPI driver or OSPM code. The debug
13921 version of the code includes the debug output trace mechanism and
13922 has a larger code and data size. Note that these values will vary
13923 depending on the efficiency of the compiler and the compiler
13924 options used during generation.
13926 Previous Release (12_18_01)
13927 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13928 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13930 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13931 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13935 Implemented fix for PIIX reverse throttling errata (Processor
13938 Added new Limit interface (Processor and Thermal drivers)
13940 New thermal policy (Thermal driver)
13942 Many updates to /proc
13944 Battery "low" event support (Battery driver)
13946 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13948 IA32 - IA64 initialization unification, no longer experimental
13950 Menuconfig options redesigned
13952 3) ASL Compiler, version X2037:
13954 Implemented several new output features to simplify integration of
13955 AML code into firmware: 1) Output the AML in C source code with
13956 labels for each named ASL object. The original ASL source code
13957 is interleaved as C comments. 2) Output the AML in ASM source code
13958 with labels and interleaved ASL source. 3) Output the AML in
13959 raw hex table form, in either C or ASM.
13961 Implemented support for optional string parameters to the
13962 LoadTable operator.
13964 Completed support for embedded escape sequences within string
13965 literals. The compiler now supports all single character escapes
13966 as well as the Octal and Hex escapes. Note: the insertion of a
13967 null byte into a string literal (via the hex/octal escape) causes
13968 the string to be immediately terminated. A warning is issued.
13970 Fixed a problem where incorrect AML was generated for the case
13971 where an ASL namepath consists of a single parent prefix (
13973 ) with no trailing name segments.
13975 The compiler has been successfully generated with a 64-bit C
13981 ----------------------------------------
13982 Summary of changes for this label: 12_18_01
13986 Enhanced blacklist with reason and severity fields. Any table's
13987 signature may now be used to identify a blacklisted system.
13989 Call _PIC control method to inform the firmware which interrupt
13990 model the OS is using. Turn on any disabled link devices.
13992 Cleaned up busmgr /proc error handling (Andreas Dilger)
13994 2) ACPI CA Core Subsystem:
13996 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13999 Completed implementation of the ACPI 2.0 "Continue",
14000 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
14001 operators. All new ACPI 2.0 operators are now implemented in both
14002 the ASL compiler and the AML interpreter. The only remaining ACPI
14003 2.0 task is support for the String data type in the DerefOf
14004 operator. Fixed a problem with AcquireMutex where the status code
14005 was lost if the caller had to actually wait for the mutex.
14007 Increased the maximum ASL Field size from 64K bits to 4G bits.
14009 Completed implementation of the external Global Lock interfaces --
14010 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
14011 Handler parameters were added.
14013 Completed another pass at removing warnings and issues when
14014 compiling with 64-bit compilers. The code now compiles cleanly
14015 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
14016 add and subtract (diff) macros have changed considerably.
14019 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
14020 64-bit platforms, 32-bits on all others. This type is used
14021 wherever memory allocation and/or the C sizeof() operator is used,
14022 and affects the OSL memory allocation interfaces AcpiOsAllocate
14023 and AcpiOsCallocate.
14025 Implemented sticky user breakpoints in the AML debugger.
14027 Code and Data Size: Current core subsystem library sizes are shown
14028 below. These are the code and data sizes for the acpica.lib
14029 produced by the Microsoft Visual C++ 6.0 compiler, and these
14030 values do not include any ACPI driver or OSPM code. The debug
14031 version of the code includes the debug output trace mechanism and
14032 has a larger code and data size. Note that these values will vary
14033 depending on the efficiency of the compiler and the compiler
14034 options used during generation.
14036 Previous Release (12_05_01)
14037 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14038 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14040 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14041 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14043 3) ASL Compiler, version X2034:
14045 Now checks for (and generates an error if detected) the use of a
14046 Break or Continue statement without an enclosing While statement.
14049 Successfully generated the compiler with the Intel 64-bit C
14052 ----------------------------------------
14053 Summary of changes for this label: 12_05_01
14055 1) ACPI CA Core Subsystem:
14057 The ACPI 2.0 CopyObject operator is fully implemented. This
14058 operator creates a new copy of an object (and is also used to
14059 bypass the "implicit conversion" mechanism of the Store operator.)
14061 The ACPI 2.0 semantics for the SizeOf operator are fully
14062 implemented. The change is that performing a SizeOf on a
14063 reference object causes an automatic dereference of the object to
14064 tha actual value before the size is evaluated. This behavior was
14065 undefined in ACPI 1.0.
14067 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
14068 have been implemented. The interrupt polarity and mode are now
14071 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
14072 appearing in Package objects were not properly converted to
14073 integers when the internal Package was converted to an external
14074 object (via the AcpiEvaluateObject interface.)
14076 Fixed a problem with the namespace object deletion mechanism for
14077 objects created by control methods. There were two parts to this
14078 problem: 1) Objects created during the initialization phase method
14079 parse were not being deleted, and 2) The object owner ID mechanism
14080 to track objects was broken.
14082 Fixed a problem where the use of the ASL Scope operator within a
14083 control method would result in an invalid opcode exception.
14085 Fixed a problem introduced in the previous label where the buffer
14086 length required for the _PRT structure was not being returned
14089 Code and Data Size: Current core subsystem library sizes are shown
14090 below. These are the code and data sizes for the acpica.lib
14091 produced by the Microsoft Visual C++ 6.0 compiler, and these
14092 values do not include any ACPI driver or OSPM code. The debug
14093 version of the code includes the debug output trace mechanism and
14094 has a larger code and data size. Note that these values will vary
14095 depending on the efficiency of the compiler and the compiler
14096 options used during generation.
14098 Previous Release (11_20_01)
14099 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14100 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14103 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14104 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14108 Updated all files to apply cleanly against 2.4.16.
14110 Added basic PCI Interrupt Routing Table (PRT) support for IA32
14111 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
14112 version supports both static and dyanmic PRT entries, but dynamic
14113 entries are treated as if they were static (not yet
14114 reconfigurable). Architecture- specific code to use this data is
14115 absent on IA32 but should be available shortly.
14117 Changed the initialization sequence to start the ACPI interpreter
14118 (acpi_init) prior to initialization of the PCI driver (pci_init)
14119 in init/main.c. This ordering is required to support PRT and
14120 facilitate other (future) enhancement. A side effect is that the
14121 ACPI bus driver and certain device drivers can no longer be loaded
14124 Modified the 'make menuconfig' options to allow PCI Interrupt
14125 Routing support to be included without the ACPI Bus and other
14128 3) ASL Compiler, version X2033:
14130 Fixed some issues with the use of the new CopyObject and
14131 DataTableRegion operators. Both are fully functional.
14133 ----------------------------------------
14134 Summary of changes for this label: 11_20_01
14136 20 November 2001. Summary of changes for this release.
14138 1) ACPI CA Core Subsystem:
14140 Updated Index support to match ACPI 2.0 semantics. Storing a
14141 Integer, String, or Buffer to an Index of a Buffer will store only
14142 the least-significant byte of the source to the Indexed buffer
14143 byte. Multiple writes are not performed.
14145 Fixed a problem where the access type used in an AccessAs ASL
14146 operator was not recorded correctly into the field object.
14148 Fixed a problem where ASL Event objects were created in a
14149 signalled state. Events are now created in an unsignalled state.
14151 The internal object cache is now purged after table loading and
14152 initialization to reduce the use of dynamic kernel memory -- on
14153 the assumption that object use is greatest during the parse phase
14154 of the entire table (versus the run-time use of individual control
14157 ACPI 2.0 variable-length packages are now fully operational.
14159 Code and Data Size: Code and Data optimizations have permitted new
14160 feature development with an actual reduction in the library size.
14161 Current core subsystem library sizes are shown below. These are
14162 the code and data sizes for the acpica.lib produced by the
14163 Microsoft Visual C++ 6.0 compiler, and these values do not include
14164 any ACPI driver or OSPM code. The debug version of the code
14165 includes the debug output trace mechanism and has a larger code
14166 and data size. Note that these values will vary depending on the
14167 efficiency of the compiler and the compiler options used during
14170 Previous Release (11_09_01):
14171 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14172 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14175 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14176 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14180 Enhanced the ACPI boot-time initialization code to allow the use
14181 of Local APIC tables for processor enumeration on IA-32, and to
14182 pave the way for a fully MPS-free boot (on SMP systems) in the
14183 near future. This functionality replaces
14184 arch/i386/kernel/acpitables.c, which was introduced in an earlier
14185 2.4.15-preX release. To enable this feature you must add
14186 "acpi_boot=on" to the kernel command line -- see the help entry
14187 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
14190 Restructured the configuration options to allow boot-time table
14191 parsing support without inclusion of the ACPI Interpreter (and
14194 NOTE: This release does not include fixes for the reported events,
14195 power-down, and thermal passive cooling issues (coming soon).
14199 Added additional typechecking for Fields within restricted access
14200 Operation Regions. All fields within EC and CMOS regions must be
14201 declared with ByteAcc. All fields withing SMBus regions must be
14202 declared with the BufferAcc access type.
14204 Fixed a problem where the listing file output of control methods
14205 no longer interleaved the actual AML code with the ASL source
14211 ----------------------------------------
14212 Summary of changes for this label: 11_09_01
14214 1) ACPI CA Core Subsystem:
14216 Implemented ACPI 2.0-defined support for writes to fields with a
14217 Buffer, String, or Integer source operand that is smaller than the
14218 target field. In these cases, the source operand is zero-extended
14219 to fill the target field.
14221 Fixed a problem where a Field starting bit offset (within the
14222 parent operation region) was calculated incorrectly if the
14224 alignment of the field differed from the access width. This
14225 affected CreateWordField, CreateDwordField, CreateQwordField, and
14226 possibly other fields that use the "AccessAny" keyword.
14228 Fixed a problem introduced in the 11_02_01 release where indirect
14229 stores through method arguments did not operate correctly.
14233 Implemented boot-time ACPI table parsing support
14234 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
14235 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
14236 legacy BIOS interfaces (e.g. MPS) for the configuration of system
14237 processors, memory, and interrupts during setup_arch(). Note that
14238 this patch does not include the required architecture-specific
14239 changes required to apply this information -- subsequent patches
14240 will be posted for both IA32 and IA64 to achieve this.
14242 Added low-level sleep support for IA32 platforms, courtesy of Pat
14243 Mochel. This allows IA32 systems to transition to/from various
14244 sleeping states (e.g. S1, S3), although the lack of a centralized
14245 driver model and power-manageable drivers will prevent its
14246 (successful) use on most systems.
14248 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
14249 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
14250 tables" option, etc.
14252 Increased the default timeout for the EC driver from 1ms to 10ms
14253 (1000 cycles of 10us) to try to address AE_TIME errors during EC
14256 ----------------------------------------
14257 Summary of changes for this label: 11_02_01
14259 1) ACPI CA Core Subsystem:
14261 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
14262 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
14265 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
14266 changes to support ACPI 2.0 Qword field access. Read/Write
14267 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
14268 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
14269 the value parameter for the address space handler interface is now
14270 an ACPI_INTEGER. OSL implementations of these interfaces must now
14271 handle the case where the Width parameter is 64.
14273 Index Fields: Fixed a problem where unaligned bit assembly and
14274 disassembly for IndexFields was not supported correctly.
14276 Index and Bank Fields: Nested Index and Bank Fields are now
14277 supported. During field access, a check is performed to ensure
14278 that the value written to an Index or Bank register is not out of
14279 the range of the register. The Index (or Bank) register is
14280 written before each access to the field data. Future support will
14281 include allowing individual IndexFields to be wider than the
14282 DataRegister width.
14284 Fields: Fixed a problem where the AML interpreter was incorrectly
14285 attempting to write beyond the end of a Field/OpRegion. This was
14286 a boundary case that occurred when a DWORD field was written to a
14287 BYTE access OpRegion, forcing multiple writes and causing the
14288 interpreter to write one datum too many.
14290 Fields: Fixed a problem with Field/OpRegion access where the
14291 starting bit address of a field was incorrectly calculated if the
14292 current access type was wider than a byte (WordAcc, DwordAcc, or
14295 Fields: Fixed a problem where forward references to individual
14296 FieldUnits (individual Field names within a Field definition) were
14297 not resolved during the AML table load.
14299 Fields: Fixed a problem where forward references from a Field
14300 definition to the parent Operation Region definition were not
14301 resolved during the AML table load.
14303 Fields: Duplicate FieldUnit names within a scope are now detected
14304 during AML table load.
14306 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
14307 returned an incorrect name for the root node.
14309 Code and Data Size: Code and Data optimizations have permitted new
14310 feature development with an actual reduction in the library size.
14311 Current core subsystem library sizes are shown below. These are
14312 the code and data sizes for the acpica.lib produced by the
14313 Microsoft Visual C++ 6.0 compiler, and these values do not include
14314 any ACPI driver or OSPM code. The debug version of the code
14315 includes the debug output trace mechanism and has a larger code
14316 and data size. Note that these values will vary depending on the
14317 efficiency of the compiler and the compiler options used during
14320 Previous Release (10_18_01):
14321 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14322 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14325 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14326 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14330 Improved /proc processor output (Pavel Machek) Re-added
14331 MODULE_LICENSE("GPL") to all modules.
14333 3) ASL Compiler version X2030:
14335 Duplicate FieldUnit names within a scope are now detected and
14340 Programmer Reference updated to reflect OSL and address space
14341 handler interface changes described above.
14343 ----------------------------------------
14344 Summary of changes for this label: 10_18_01
14346 ACPI CA Core Subsystem:
14348 Fixed a problem with the internal object reference count mechanism
14349 that occasionally caused premature object deletion. This resolves
14350 all of the outstanding problem reports where an object is deleted
14351 in the middle of an interpreter evaluation. Although this problem
14352 only showed up in rather obscure cases, the solution to the
14353 problem involved an adjustment of all reference counts involving
14354 objects attached to namespace nodes.
14356 Fixed a problem with Field support in the interpreter where
14357 writing to an aligned field whose length is an exact multiple (2
14358 or greater) of the field access granularity would cause an attempt
14359 to write beyond the end of the field.
14361 The top level AML opcode execution functions within the
14362 interpreter have been renamed with a more meaningful and
14363 consistent naming convention. The modules exmonad.c and
14364 exdyadic.c were eliminated. New modules are exoparg1.c,
14365 exoparg2.c, exoparg3.c, and exoparg6.c.
14367 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
14369 Fixed a problem where the AML debugger was causing some internal
14370 objects to not be deleted during subsystem termination.
14372 Fixed a problem with the external AcpiEvaluateObject interface
14373 where the subsystem would fault if the named object to be
14374 evaluated refered to a constant such as Zero, Ones, etc.
14376 Fixed a problem with IndexFields and BankFields where the
14377 subsystem would fault if the index, data, or bank registers were
14378 not defined in the same scope as the field itself.
14380 Added printf format string checking for compilers that support
14381 this feature. Corrected more than 50 instances of issues with
14382 format specifiers within invocations of ACPI_DEBUG_PRINT
14383 throughout the core subsystem code.
14385 The ASL "Revision" operator now returns the ACPI support level
14386 implemented in the core - the value "2" since the ACPI 2.0 support
14387 is more than 50% implemented.
14389 Enhanced the output of the AML debugger "dump namespace" command
14390 to output in a more human-readable form.
14392 Current core subsystem library code sizes are shown below. These
14394 are the code and data sizes for the acpica.lib produced by the
14395 Microsoft Visual C++ 6.0 compiler, and these values do not include
14396 any ACPI driver or OSPM code. The debug version of the code
14397 includes the full debug trace mechanism -- leading to a much
14399 larger code and data size. Note that these values will vary
14400 depending on the efficiency of the compiler and the compiler
14401 options used during generation.
14403 Previous Label (09_20_01):
14404 Non-Debug Version: 65K Code, 5K Data, 70K Total
14405 Debug Version: 138K Code, 58K Data, 196K Total
14409 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14410 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14414 Implemented a "Bad BIOS Blacklist" to track machines that have
14415 known ASL/AML problems.
14417 Enhanced the /proc interface for the thermal zone driver and added
14418 support for _HOT (the critical suspend trip point). The 'info'
14419 file now includes threshold/policy information, and allows setting
14420 of _SCP (cooling preference) and _TZP (polling frequency) values
14421 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
14422 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
14423 preference to the passive/quiet mode (if supported by the ASL).
14425 Implemented a workaround for a gcc bug that resuted in an OOPs
14426 when loading the control method battery driver.
14428 ----------------------------------------
14429 Summary of changes for this label: 09_20_01
14431 ACPI CA Core Subsystem:
14433 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
14434 modified to allow individual GPE levels to be flagged as wake-
14435 enabled (i.e., these GPEs are to remain enabled when the platform
14438 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
14439 support wake-enabled GPEs. This means that upon entering the
14440 sleep state, all GPEs that are not wake-enabled are disabled.
14441 When leaving the sleep state, these GPEs are reenabled.
14443 A local double-precision divide/modulo module has been added to
14444 enhance portability to OS kernels where a 64-bit math library is
14445 not available. The new module is "utmath.c".
14447 Several optimizations have been made to reduce the use of CPU
14448 stack. Originally over 2K, the maximum stack usage is now below
14449 2K at 1860 bytes (1.82k)
14451 Fixed a problem with the AcpiGetFirmwareTable interface where the
14452 root table pointer was not mapped into a logical address properly.
14454 Fixed a problem where a NULL pointer was being dereferenced in the
14455 interpreter code for the ASL Notify operator.
14457 Fixed a problem where the use of the ASL Revision operator
14458 returned an error. This operator now returns the current version
14459 of the ACPI CA core subsystem.
14461 Fixed a problem where objects passed as control method parameters
14462 to AcpiEvaluateObject were always deleted at method termination.
14463 However, these objects may end up being stored into the namespace
14464 by the called method. The object reference count mechanism was
14465 applied to these objects instead of a force delete.
14467 Fixed a problem where static strings or buffers (contained in the
14468 AML code) that are declared as package elements within the ASL
14469 code could cause a fault because the interpreter would attempt to
14470 delete them. These objects are now marked with the "static
14471 object" flag to prevent any attempt to delete them.
14473 Implemented an interpreter optimization to use operands directly
14474 from the state object instead of extracting the operands to local
14475 variables. This reduces stack use and code size, and improves
14478 The module exxface.c was eliminated as it was an unnecessary extra
14481 Current core subsystem library code sizes are shown below. These
14482 are the code and data sizes for the acpica.lib produced by the
14483 Microsoft Visual C++ 6.0 compiler, and these values do not include
14484 any ACPI driver or OSPM code. The debug version of the code
14485 includes the full debug trace mechanism -- leading to a much
14486 larger code and data size. Note that these values will vary
14487 depending on the efficiency of the compiler and the compiler
14488 options used during generation.
14490 Non-Debug Version: 65K Code, 5K Data, 70K Total
14491 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
14492 Total (Previously 195K)
14496 Support for ACPI 2.0 64-bit integers has been added. All ACPI
14497 Integer objects are now 64 bits wide
14499 All Acpi data types and structures are now in lower case. Only
14500 Acpi macros are upper case for differentiation.
14504 Changes to the external interfaces as described above.
14506 ----------------------------------------
14507 Summary of changes for this label: 08_31_01
14509 ACPI CA Core Subsystem:
14511 A bug with interpreter implementation of the ASL Divide operator
14512 was found and fixed. The implicit function return value (not the
14513 explicit store operands) was returning the remainder instead of
14514 the quotient. This was a longstanding bug and it fixes several
14515 known outstanding issues on various platforms.
14517 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
14518 been further optimized for size. There are 700 invocations of the
14519 DEBUG_PRINT macro alone, so each optimization reduces the size of
14520 the debug version of the subsystem significantly.
14522 A stack trace mechanism has been implemented. The maximum stack
14523 usage is about 2K on 32-bit platforms. The debugger command "stat
14524 stack" will display the current maximum stack usage.
14526 All public symbols and global variables within the subsystem are
14527 now prefixed with the string "Acpi". This keeps all of the
14528 symbols grouped together in a kernel map, and avoids conflicts
14529 with other kernel subsystems.
14531 Most of the internal fixed lookup tables have been moved into the
14532 code segment via the const operator.
14534 Several enhancements have been made to the interpreter to both
14535 reduce the code size and improve performance.
14537 Current core subsystem library code sizes are shown below. These
14538 are the code and data sizes for the acpica.lib produced by the
14539 Microsoft Visual C++ 6.0 compiler, and these values do not include
14540 any ACPI driver or OSPM code. The debug version of the code
14541 includes the full debug trace mechanism which contains over 700
14542 invocations of the DEBUG_PRINT macro, 500 function entry macro
14543 invocations, and over 900 function exit macro invocations --
14544 leading to a much larger code and data size. Note that these
14545 values will vary depending on the efficiency of the compiler and
14546 the compiler options used during generation.
14548 Non-Debug Version: 64K Code, 5K Data, 69K Total
14549 Debug Version: 137K Code, 58K Data, 195K Total
14553 Implemented wbinvd() macro, pending a kernel-wide definition.
14555 Fixed /proc/acpi/event to handle poll() and short reads.
14557 ASL Compiler, version X2026:
14559 Fixed a problem introduced in the previous label where the AML
14561 code emitted for package objects produced packages with zero
14564 ----------------------------------------
14565 Summary of changes for this label: 08_16_01
14567 ACPI CA Core Subsystem:
14569 The following ACPI 2.0 ASL operators have been implemented in the
14570 AML interpreter (These are already supported by the Intel ASL
14571 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
14572 ToBuffer. Support for 64-bit AML constants is implemented in the
14573 AML parser, debugger, and disassembler.
14575 The internal memory tracking mechanism (leak detection code) has
14576 been upgraded to reduce the memory overhead (a separate tracking
14577 block is no longer allocated for each memory allocation), and now
14578 supports all of the internal object caches.
14580 The data structures and code for the internal object caches have
14581 been coelesced and optimized so that there is a single cache and
14582 memory list data structure and a single group of functions that
14583 implement generic cache management. This has reduced the code
14584 size in both the debug and release versions of the subsystem.
14586 The DEBUG_PRINT macro(s) have been optimized for size and replaced
14587 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
14588 different, because it generates a single call to an internal
14589 function. This results in a savings of about 90 bytes per
14590 invocation, resulting in an overall code and data savings of about
14591 16% in the debug version of the subsystem.
14595 Fixed C3 disk corruption problems and re-enabled C3 on supporting
14598 Integrated low-level sleep code by Patrick Mochel.
14600 Further tweaked source code Linuxization.
14606 Support for ACPI 2.0 variable length packages is fixed/completed.
14608 Fixed a problem where the optional length parameter for the ACPI
14609 2.0 ToString operator.
14611 Fixed multiple extraneous error messages when a syntax error is
14612 detected within the declaration line of a control method.
14614 ----------------------------------------
14615 Summary of changes for this label: 07_17_01
14617 ACPI CA Core Subsystem:
14619 Added a new interface named AcpiGetFirmwareTable to obtain any
14620 ACPI table via the ACPI signature. The interface can be called at
14621 any time during kernel initialization, even before the kernel
14622 virtual memory manager is initialized and paging is enabled. This
14623 allows kernel subsystems to obtain ACPI tables very early, even
14624 before the ACPI CA subsystem is initialized.
14626 Fixed a problem where Fields defined with the AnyAcc attribute
14627 could be resolved to the incorrect address under the following
14628 conditions: 1) the field width is larger than 8 bits and 2) the
14629 parent operation region is not defined on a DWORD boundary.
14631 Fixed a problem where the interpreter is not being locked during
14632 namespace initialization (during execution of the _INI control
14633 methods), causing an error when an attempt is made to release it
14636 ACPI 2.0 support in the AML Interpreter has begun and will be
14637 ongoing throughout the rest of this year. In this label, The Mod
14638 operator is implemented.
14640 Added a new data type to contain full PCI addresses named
14641 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14642 and Function values.
14646 Enhanced the Linux version of the source code to change most
14647 capitalized ACPI type names to lowercase. For example, all
14648 instances of ACPI_STATUS are changed to acpi_status. This will
14649 result in a large diff, but the change is strictly cosmetic and
14650 aligns the CA code closer to the Linux coding standard.
14654 The interfaces to the PCI configuration space have been changed to
14655 add the PCI Segment number and to split the single 32-bit combined
14656 DeviceFunction field into two 16-bit fields. This was
14657 accomplished by moving the four values that define an address in
14658 PCI configuration space (segment, bus, device, and function) to
14659 the new ACPI_PCI_ID structure.
14661 The changes to the PCI configuration space interfaces led to a
14662 reexamination of the complete set of address space access
14663 interfaces for PCI, I/O, and Memory. The previously existing 18
14664 interfaces have proven difficult to maintain (any small change
14665 must be propagated across at least 6 interfaces) and do not easily
14666 allow for future expansion to 64 bits if necessary. Also, on some
14667 systems, it would not be appropriate to demultiplex the access
14668 width (8, 16, 32,or 64) before calling the OSL if the
14669 corresponding native OS interfaces contain a similar access width
14670 parameter. For these reasons, the 18 address space interfaces
14671 have been replaced by these 6 new ones:
14673 AcpiOsReadPciConfiguration
14674 AcpiOsWritePciConfiguration
14680 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14681 to perform the platform and/or OS-specific actions necessary to
14682 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14683 interface will simply call down to the CA core to perform the low-
14684 memory search for the table. On IA-64, the RSDP is obtained from
14685 EFI. Migrating this interface to the OSL allows the CA core to
14687 remain OS and platform independent.
14689 Added a new interface named AcpiOsSignal to provide a generic
14690 "function code and pointer" interface for various miscellaneous
14691 signals and notifications that must be made to the host OS. The
14692 first such signals are intended to support the ASL Fatal and
14693 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14694 interface has been obsoleted.
14696 The definition of the AcpiFormatException interface has been
14697 changed to simplify its use. The caller no longer must supply a
14698 buffer to the call; A pointer to a const string is now returned
14699 directly. This allows the call to be easily used in printf
14700 statements, etc. since the caller does not have to manage a local
14704 ASL Compiler, Version X2025:
14706 The ACPI 2.0 Switch/Case/Default operators have been implemented
14707 and are fully functional. They will work with all ACPI 1.0
14708 interpreters, since the operators are simply translated to If/Else
14711 The ACPI 2.0 ElseIf operator is implemented and will also work
14712 with 1.0 interpreters, for the same reason.
14714 Implemented support for ACPI 2.0 variable-length packages. These
14715 packages have a separate opcode, and their size is determined by
14716 the interpreter at run-time.
14718 Documentation The ACPI CA Programmer Reference has been updated to
14719 reflect the new interfaces and changes to existing interfaces.
14721 ------------------------------------------
14722 Summary of changes for this label: 06_15_01
14724 ACPI CA Core Subsystem:
14726 Fixed a problem where a DWORD-accessed field within a Buffer
14727 object would get its byte address inadvertently rounded down to
14728 the nearest DWORD. Buffers are always Byte-accessible.
14730 ASL Compiler, version X2024:
14732 Fixed a problem where the Switch() operator would either fault or
14733 hang the compiler. Note however, that the AML code for this ACPI
14734 2.0 operator is not yet implemented.
14736 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14739 Implementation of the CreateField operator automatically converts
14740 a reference to a named field within a resource descriptor from a
14741 byte offset to a bit offset if required.
14743 Added some missing named fields from the resource descriptor
14744 support. These are the names that are automatically created by the
14745 compiler to reference fields within a descriptor. They are only
14746 valid at compile time and are not passed through to the AML
14749 Resource descriptor named fields are now typed as Integers and
14750 subject to compile-time typechecking when used in expressions.
14752 ------------------------------------------
14753 Summary of changes for this label: 05_18_01
14755 ACPI CA Core Subsystem:
14757 Fixed a couple of problems in the Field support code where bits
14758 from adjacent fields could be returned along with the proper field
14759 bits. Restructured the field support code to improve performance,
14760 readability and maintainability.
14762 New DEBUG_PRINTP macro automatically inserts the procedure name
14763 into the output, saving hundreds of copies of procedure name
14764 strings within the source, shrinking the memory footprint of the
14765 debug version of the core subsystem.
14767 Source Code Structure:
14769 The source code directory tree was restructured to reflect the
14770 current organization of the component architecture. Some files
14771 and directories have been moved and/or renamed.
14775 Fixed leaking kacpidpc processes.
14777 Fixed queueing event data even when /proc/acpi/event is not
14780 ASL Compiler, version X2020:
14782 Memory allocation performance enhancement - over 24X compile time
14783 improvement on large ASL files. Parse nodes and namestring
14784 buffers are now allocated from a large internal compiler buffer.
14786 The temporary .SRC file is deleted unless the "-s" option is
14789 The "-d" debug output option now sends all output to the .DBG file
14790 instead of the console.
14792 "External" second parameter is now optional
14794 "ElseIf" syntax now properly allows the predicate
14796 Last operand to "Load" now recognized as a Target operand
14798 Debug object can now be used anywhere as a normal object.
14800 ResourceTemplate now returns an object of type BUFFER
14802 EISAID now returns an object of type INTEGER
14804 "Index" now works with a STRING operand
14806 "LoadTable" now accepts optional parameters
14808 "ToString" length parameter is now optional
14810 "Interrupt (ResourceType," parse error fixed.
14812 "Register" with a user-defined region space parse error fixed
14814 Escaped backslash at the end of a string ("\\") scan/parse error
14817 "Revision" is now an object of type INTEGER.
14821 ------------------------------------------
14822 Summary of changes for this label: 05_02_01
14826 /proc/acpi/event now blocks properly.
14828 Removed /proc/sys/acpi. You can still dump your DSDT from
14831 ACPI CA Core Subsystem:
14833 Fixed a problem introduced in the previous label where some of the
14834 "small" resource descriptor types were not recognized.
14836 Improved error messages for the case where an ASL Field is outside
14837 the range of the parent operation region.
14839 ASL Compiler, version X2018:
14842 Added error detection for ASL Fields that extend beyond the length
14843 of the parent operation region (only if the length of the region
14844 is known at compile time.) This includes fields that have a
14845 minimum access width that is smaller than the parent region, and
14846 individual field units that are partially or entirely beyond the
14847 extent of the parent.
14851 ------------------------------------------
14852 Summary of changes for this label: 04_27_01
14854 ACPI CA Core Subsystem:
14856 Fixed a problem where the namespace mutex could be released at the
14857 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14859 Added optional thread ID output for debug traces, to simplify
14860 debugging of multiple threads. Added context switch notification
14861 when the debug code realizes that a different thread is now
14862 executing ACPI code.
14864 Some additional external data types have been prefixed with the
14865 string "ACPI_" for consistency. This may effect existing code.
14866 The data types affected are the external callback typedefs - e.g.,
14868 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14872 Fixed an issue with the OSL semaphore implementation where a
14873 thread was waking up with an error from receiving a SIGCHLD
14876 Linux version of ACPI CA now uses the system C library for string
14877 manipulation routines instead of a local implementation.
14879 Cleaned up comments and removed TBDs.
14881 ASL Compiler, version X2017:
14883 Enhanced error detection and reporting for all file I/O
14888 Programmer Reference updated to version 1.06.
14892 ------------------------------------------
14893 Summary of changes for this label: 04_13_01
14895 ACPI CA Core Subsystem:
14897 Restructured support for BufferFields and RegionFields.
14898 BankFields support is now fully operational. All known 32-bit
14899 limitations on field sizes have been removed. Both BufferFields
14900 and (Operation) RegionFields are now supported by the same field
14903 Resource support now supports QWORD address and IO resources. The
14904 16/32/64 bit address structures and the Extended IRQ structure
14905 have been changed to properly handle Source Resource strings.
14907 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14908 condition internally and must never be returned by AcpiOsThreadId.
14909 This reserved value was changed from 0 since Unix systems allow a
14914 Driver code reorganized to enhance portability
14916 Added a kernel configuration option to control ACPI_DEBUG
14918 Fixed the EC driver to honor _GLK.
14920 ASL Compiler, version X2016:
14922 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14923 address space was set to 0, not 0x7f as it should be.
14925 ------------------------------------------
14926 Summary of changes for this label: 03_13_01
14928 ACPI CA Core Subsystem:
14930 During ACPI initialization, the _SB_._INI method is now run if
14933 Notify handler fix - notifies are deferred until the parent method
14934 completes execution. This fixes the "mutex already acquired"
14935 issue seen occasionally.
14937 Part of the "implicit conversion" rules in ACPI 2.0 have been
14938 found to cause compatibility problems with existing ASL/AML. The
14939 convert "result-to-target-type" implementation has been removed
14940 for stores to method Args and Locals. Source operand conversion
14941 is still fully implemented. Possible changes to ACPI 2.0
14942 specification pending.
14944 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14947 Fix for compiler warnings for 64-bit compiles.
14951 /proc output aligned for easier parsing.
14953 Release-version compile problem fixed.
14955 New kernel configuration options documented in Configure.help.
14957 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14962 Power resource driver integrated with bus manager.
14964 Fixed kernel fault during active cooling for thermal zones.
14968 The source code tree has been restructured.
14972 ------------------------------------------
14973 Summary of changes for this label: 03_02_01
14975 Linux OS Services Layer (OSL):
14977 Major revision of all Linux-specific code.
14979 Modularized all ACPI-specific drivers.
14981 Added new thermal zone and power resource drivers.
14983 Revamped /proc interface (new functionality is under /proc/acpi).
14985 New kernel configuration options.
14987 Linux known issues:
14989 New kernel configuration options not documented in Configure.help
14993 Module dependencies not currently implemented. If used, they
14994 should be loaded in this order: busmgr, power, ec, system,
14995 processor, battery, ac_adapter, button, thermal.
14997 Modules will not load if CONFIG_MODVERSION is set.
14999 IBM 600E - entering S5 may reboot instead of shutting down.
15001 IBM 600E - Sleep button may generate "Invalid <NULL> context"
15004 Some systems may fail with "execution mutex already acquired"
15007 ACPI CA Core Subsystem:
15009 Added a new OSL Interface, AcpiOsGetThreadId. This was required
15010 for the deadlock detection code. Defined to return a non-zero, 32-
15011 bit thread ID for the currently executing thread. May be a non-
15012 zero constant integer on single-thread systems.
15014 Implemented deadlock detection for internal subsystem mutexes. We
15015 may add conditional compilation for this code (debug only) later.
15017 ASL/AML Mutex object semantics are now fully supported. This
15018 includes multiple acquires/releases by owner and support for the
15020 Mutex SyncLevel parameter.
15022 A new "Force Release" mechanism automatically frees all ASL
15023 Mutexes that have been acquired but not released when a thread
15024 exits the interpreter. This forces conformance to the ACPI spec
15025 ("All mutexes must be released when an invocation exits") and
15026 prevents deadlocked ASL threads. This mechanism can be expanded
15027 (later) to monitor other resource acquisitions if OEM ASL code
15028 continues to misbehave (which it will).
15030 Several new ACPI exception codes have been added for the Mutex
15033 Recursive method calls are now allowed and supported (the ACPI
15034 spec does in fact allow recursive method calls.) The number of
15035 recursive calls is subject to the restrictions imposed by the
15036 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
15039 Implemented support for the SyncLevel parameter for control
15040 methods (ACPI 2.0 feature)
15042 Fixed a deadlock problem when multiple threads attempted to use
15045 Fixed a problem where the string length of a String package
15046 element was not always set in a package returned from
15047 AcpiEvaluateObject.
15049 Fixed a problem where the length of a String package element was
15050 not always included in the length of the overall package returned
15051 from AcpiEvaluateObject.
15053 Added external interfaces (Acpi*) to the ACPI debug memory
15054 manager. This manager keeps a list of all outstanding
15055 allocations, and can therefore detect memory leaks and attempts to
15056 free memory blocks more than once. Useful for code such as the
15057 power manager, etc. May not be appropriate for device drivers.
15058 Performance with the debug code enabled is slow.
15060 The ACPI Global Lock is now an optional hardware element.
15062 ASL Compiler Version X2015:
15064 Integrated changes to allow the compiler to be generated on
15065 multiple platforms.
15067 Linux makefile added to generate the compiler on Linux
15071 All platform-specific headers have been moved to their own
15072 subdirectory, Include/Platform.
15074 New source file added, Interpreter/ammutex.c
15076 New header file, Include/acstruct.h
15080 The programmer reference has been updated for the following new
15081 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
15083 ------------------------------------------
15084 Summary of changes for this label: 02_08_01
15086 Core ACPI CA Subsystem: Fixed a problem where an error was
15087 incorrectly returned if the return resource buffer was larger than
15088 the actual data (in the resource interfaces).
15090 References to named objects within packages are resolved to the
15092 full pathname string before packages are returned directly (via
15093 the AcpiEvaluateObject interface) or indirectly via the resource
15096 Linux OS Services Layer (OSL):
15098 Improved /proc battery interface.
15101 Added C-state debugging output and other miscellaneous fixes.
15103 ASL Compiler Version X2014:
15105 All defined method arguments can now be used as local variables,
15106 including the ones that are not actually passed in as parameters.
15107 The compiler tracks initialization of the arguments and issues an
15108 exception if they are used without prior assignment (just like
15111 The -o option now specifies a filename prefix that is used for all
15112 output files, including the AML output file. Otherwise, the
15113 default behavior is as follows: 1) the AML goes to the file
15114 specified in the DSDT. 2) all other output files use the input
15115 source filename as the base.
15117 ------------------------------------------
15118 Summary of changes for this label: 01_25_01
15120 Core ACPI CA Subsystem: Restructured the implementation of object
15121 store support within the interpreter. This includes support for
15122 the Store operator as well as any ASL operators that include a
15125 Partially implemented support for Implicit Result-to-Target
15126 conversion. This is when a result object is converted on the fly
15127 to the type of an existing target object. Completion of this
15128 support is pending further analysis of the ACPI specification
15129 concerning this matter.
15131 CPU-specific code has been removed from the subsystem (hardware
15134 New Power Management Timer functions added
15136 Linux OS Services Layer (OSL): Moved system state transition code
15137 to the core, fixed it, and modified Linux OSL accordingly.
15139 Fixed C2 and C3 latency calculations.
15142 We no longer use the compilation date for the version message on
15143 initialization, but retrieve the version from AcpiGetSystemInfo().
15145 Incorporated for fix Sony VAIO machines.
15147 Documentation: The Programmer Reference has been updated and
15151 ASL Compiler: Version X2013: Fixed a problem where the line
15152 numbering and error reporting could get out of sync in the
15153 presence of multiple include files.
15155 ------------------------------------------
15156 Summary of changes for this label: 01_15_01
15158 Core ACPI CA Subsystem:
15160 Implemented support for type conversions in the execution of the
15161 ASL Concatenate operator (The second operand is converted to
15162 match the type of the first operand before concatenation.)
15164 Support for implicit source operand conversion is partially
15165 implemented. The ASL source operand types Integer, Buffer, and
15166 String are freely interchangeable for most ASL operators and are
15167 converted by the interpreter on the fly as required. Implicit
15168 Target operand conversion (where the result is converted to the
15169 target type before storing) is not yet implemented.
15171 Support for 32-bit and 64-bit BCD integers is implemented.
15173 Problem fixed where a field read on an aligned field could cause a
15174 read past the end of the field.
15176 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
15177 does not return a value, but the caller expects one. (The ASL
15178 compiler flags this as a warning.)
15183 1. Static typechecking of all operands is implemented. This
15184 prevents the use of invalid objects (such as using a Package where
15185 an Integer is required) at compile time instead of at interpreter
15187 2. The ASL source line is printed with ALL errors and warnings.
15188 3. Bug fix for source EOF without final linefeed.
15189 4. Debug option is split into a parse trace and a namespace trace.
15190 5. Namespace output option (-n) includes initial values for
15191 integers and strings.
15192 6. Parse-only option added for quick syntax checking.
15193 7. Compiler checks for duplicate ACPI name declarations
15196 1. Relaxed typechecking to allow interchangeability between
15197 strings, integers, and buffers. These types are now converted by
15198 the interpreter at runtime.
15199 2. Compiler reports time taken by each internal subsystem in the
15203 ------------------------------------------
15204 Summary of changes for this label: 12_14_00
15208 This is the first official release of the compiler. Since the
15209 compiler requires elements of the Core Subsystem, this label
15210 synchronizes everything.
15212 ------------------------------------------
15213 Summary of changes for this label: 12_08_00
15216 Fixed a problem where named references within the ASL definition
15217 of both OperationRegions and CreateXXXFields did not work
15218 properly. The symptom was an AE_AML_OPERAND_TYPE during
15219 initialization of the region/field. This is similar (but not
15220 related internally) to the problem that was fixed in the last
15223 Implemented both 32-bit and 64-bit support for the BCD ASL
15224 functions ToBCD and FromBCD.
15226 Updated all legal headers to include "2000" in the copyright
15229 ------------------------------------------
15230 Summary of changes for this label: 12_01_00
15232 Fixed a problem where method invocations within the ASL definition
15233 of both OperationRegions and CreateXXXFields did not work
15234 properly. The symptom was an AE_AML_OPERAND_TYPE during
15235 initialization of the region/field:
15237 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
15238 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
15241 Fixed a problem where operators with more than one nested
15242 subexpression would fail. The symptoms were varied, by mostly
15243 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
15244 problem that has gone unnoticed until now.
15246 Subtract (Add (1,2), Multiply (3,4))
15248 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
15249 previous build (The prefix part of a relative path was handled
15252 Fixed a problem where Operation Region initialization failed if
15253 the operation region name was a "namepath" instead of a simple
15254 "nameseg". Symptom was an AE_NO_OPERAND error.
15256 Fixed a problem where an assignment to a local variable via the
15257 indirect RefOf mechanism only worked for the first such
15258 assignment. Subsequent assignments were ignored.
15260 ------------------------------------------
15261 Summary of changes for this label: 11_15_00
15263 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
15264 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
15265 the AML interpreter does NOT have support for the new 2.0 ASL
15266 grammar terms at this time.
15268 All ACPI hardware access is via the GAS structures in the ACPI 2.0
15271 All physical memory addresses across all platforms are now 64 bits
15272 wide. Logical address width remains dependent on the platform
15275 AcpiOsMapMemory interface changed to a 64-bit physical address.
15277 The AML interpreter integer size is now 64 bits, as per the ACPI
15280 For backwards compatibility with ACPI 1.0, ACPI tables with a
15281 revision number less than 2 use 32-bit integers only.
15283 Fixed a problem where the evaluation of OpRegion operands did not
15284 always resolve them to numbers properly.
15286 ------------------------------------------
15287 Summary of changes for this label: 10_20_00
15289 Fix for CBN_._STA issue. This fix will allow correct access to
15290 CBN_ OpRegions when the _STA returns 0x8.
15292 Support to convert ACPI constants (Ones, Zeros, One) to actual
15293 values before a package object is returned
15295 Fix for method call as predicate to if/while construct causing
15296 incorrect if/while behavior
15298 Fix for Else block package lengths sometimes calculated wrong (if
15301 Fix for Processor object length field, was always zero
15303 Table load abort if FACP sanity check fails
15305 Fix for problem with Scope(name) if name already exists
15307 Warning emitted if a named object referenced cannot be found
15308 (resolved) during method execution.
15314 ------------------------------------------
15315 Summary of changes for this label: 9_29_00
15317 New table initialization interfaces: AcpiInitializeSubsystem no
15318 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
15319 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
15320 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
15323 Note: These interface changes require changes to all existing OSDs
15325 The PCI_Config default address space handler is always installed
15326 at the root namespace object.
15328 -------------------------------------------
15329 Summary of changes for this label: 09_15_00
15331 The new initialization architecture is implemented. New
15332 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
15333 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
15335 (Namespace is automatically loaded when a table is loaded)
15337 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
15338 52 bytes to 32 bytes. There is usually one of these for every
15339 namespace object, so the memory savings is significant.
15341 Implemented just-in-time evaluation of the CreateField operators.
15343 Bug fixes for IA-64 support have been integrated.
15345 Additional code review comments have been implemented
15347 The so-called "third pass parse" has been replaced by a final walk
15348 through the namespace to initialize all operation regions (address
15349 spaces) and fields that have not yet been initialized during the
15350 execution of the various _INI and REG methods.
15352 New file - namespace/nsinit.c
15354 -------------------------------------------
15355 Summary of changes for this label: 09_01_00
15357 Namespace manager data structures have been reworked to change the
15358 primary object from a table to a single object. This has
15359 resulted in dynamic memory savings of 3X within the namespace and
15360 2X overall in the ACPI CA subsystem.
15362 Fixed problem where the call to AcpiEvFindPciRootBuses was
15363 inadvertently left commented out.
15365 Reduced the warning count when generating the source with the GCC
15368 Revision numbers added to each module header showing the
15369 SourceSafe version of the file. Please refer to this version
15370 number when giving us feedback or comments on individual modules.
15372 The main object types within the subsystem have been renamed to
15373 clarify their purpose:
15375 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
15376 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
15377 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
15379 NOTE: no changes to the initialization sequence are included in
15382 -------------------------------------------
15383 Summary of changes for this label: 08_23_00
15385 Fixed problem where TerminateControlMethod was being called
15386 multiple times per method
15388 Fixed debugger problem where single stepping caused a semaphore to
15391 Improved performance through additional parse object caching -
15392 added ACPI_EXTENDED_OP type
15394 -------------------------------------------
15395 Summary of changes for this label: 08_10_00
15397 Parser/Interpreter integration: Eliminated the creation of
15398 complete parse trees for ACPI tables and control methods.
15399 Instead, parse subtrees are created and then deleted as soon as
15400 they are processed (Either entered into the namespace or executed
15401 by the interpreter). This reduces the use of dynamic kernel
15402 memory significantly. (about 10X)
15404 Exception codes broken into classes and renumbered. Be sure to
15405 recompile all code that includes acexcep.h. Hopefully we won't
15406 have to renumber the codes again now that they are split into
15407 classes (environment, programmer, AML code, ACPI table, and
15410 Fixed some additional alignment issues in the Resource Manager
15413 Implemented semaphore tracking in the AcpiExec utility, and fixed
15414 several places where mutexes/semaphores were being unlocked
15415 without a corresponding lock operation. There are no known
15416 semaphore or mutex "leaks" at this time.
15418 Fixed the case where an ASL Return operator is used to return an
15421 -------------------------------------------
15422 Summary of changes for this label: 07_28_00
15424 Fixed a problem with the way addresses were calculated in
15425 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
15426 manifested itself when a Field was created with WordAccess or
15427 DwordAccess, but the field unit defined within the Field was less
15429 than a Word or Dword.
15431 Fixed a problem in AmlDumpOperands() module's loop to pull
15432 operands off of the operand stack to display information. The
15433 problem manifested itself as a TLB error on 64-bit systems when
15434 accessing an operand stack with two or more operands.
15436 Fixed a problem with the PCI configuration space handlers where
15437 context was getting confused between accesses. This required a
15438 change to the generic address space handler and address space
15439 setup definitions. Handlers now get both a global handler context
15440 (this is the one passed in by the user when executing
15441 AcpiInstallAddressSpaceHandler() and a specific region context
15442 that is unique to each region (For example, the _ADR, _SEG and
15443 _BBN values associated with a specific region). The generic
15444 function definitions have changed to the following:
15446 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
15447 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
15448 *HandlerContext, // This used to be void *Context void
15449 *RegionContext); // This is an additional parameter
15451 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
15452 RegionHandle, UINT32 Function, void *HandlerContext, void
15453 **RegionContext); // This used to be **ReturnContext
15455 -------------------------------------------
15456 Summary of changes for this label: 07_21_00
15458 Major file consolidation and rename. All files within the
15459 interpreter have been renamed as well as most header files. This
15460 was done to prevent collisions with existing files in the host
15461 OSs -- filenames such as "config.h" and "global.h" seem to be
15462 quite common. The VC project files have been updated. All
15463 makefiles will require modification.
15465 The parser/interpreter integration continues in Phase 5 with the
15466 implementation of a complete 2-pass parse (the AML is parsed
15467 twice) for each table; This avoids the construction of a huge
15468 parse tree and therefore reduces the amount of dynamic memory
15469 required by the subsystem. Greater use of the parse object cache
15470 means that performance is unaffected.
15472 Many comments from the two code reviews have been rolled in.
15474 The 64-bit alignment support is complete.
15476 -------------------------------------------
15477 Summary of changes for this label: 06_30_00
15479 With a nod and a tip of the hat to the technology of yesteryear,
15480 we've added support in the source code for 80 column output
15481 devices. The code is now mostly constrained to 80 columns or
15482 less to support environments and editors that 1) cannot display
15483 or print more than 80 characters on a single line, and 2) cannot
15484 disable line wrapping.
15486 A major restructuring of the namespace data structure has been
15487 completed. The result is 1) cleaner and more
15488 understandable/maintainable code, and 2) a significant reduction
15489 in the dynamic memory requirement for each named ACPI object
15492 -------------------------------------------
15493 Summary of changes for this label: 06_23_00
15495 Linux support has been added. In order to obtain approval to get
15496 the ACPI CA subsystem into the Linux kernel, we've had to make
15497 quite a few changes to the base subsystem that will affect all
15498 users (all the changes are generic and OS- independent). The
15499 effects of these global changes have been somewhat far reaching.
15500 Files have been merged and/or renamed and interfaces have been
15501 renamed. The major changes are described below.
15503 Osd* interfaces renamed to AcpiOs* to eliminate namespace
15504 pollution/confusion within our target kernels. All OSD
15505 interfaces must be modified to match the new naming convention.
15507 Files merged across the subsystem. A number of the smaller source
15508 and header files have been merged to reduce the file count and
15509 increase the density of the existing files. There are too many
15510 to list here. In general, makefiles that call out individual
15511 files will require rebuilding.
15513 Interpreter files renamed. All interpreter files now have the
15514 prefix am* instead of ie* and is*.
15516 Header files renamed: The acapi.h file is now acpixf.h. The
15517 acpiosd.h file is now acpiosxf.h. We are removing references to
15518 the acronym "API" since it is somewhat windowsy. The new name is
15519 "external interface" or xface or xf in the filenames.j
15522 All manifest constants have been forced to upper case (some were
15523 mixed case.) Also, the string "ACPI_" has been prepended to many
15524 (not all) of the constants, typedefs, and structs.
15526 The globals "DebugLevel" and "DebugLayer" have been renamed
15527 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
15529 All other globals within the subsystem are now prefixed with
15530 "AcpiGbl_" Internal procedures within the subsystem are now
15531 prefixed with "Acpi" (with only a few exceptions). The original
15532 two-letter abbreviation for the subcomponent remains after "Acpi"
15533 - for example, CmCallocate became AcpiCmCallocate.
15535 Added a source code translation/conversion utility. Used to
15536 generate the Linux source code, it can be modified to generate
15537 other types of source as well. Can also be used to cleanup
15538 existing source by removing extraneous spaces and blank lines.
15539 Found in tools/acpisrc/*
15541 OsdUnMapMemory was renamed to OsdUnmapMemory and then
15542 AcpiOsUnmapMemory. (UnMap became Unmap).
15544 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
15545 When set to one, this indicates that the caller wants to use the
15547 semaphore as a mutex, not a counting semaphore. ACPI CA uses
15548 both types. However, implementers of this call may want to use
15549 different OS primitives depending on the type of semaphore
15550 requested. For example, some operating systems provide separate
15552 "mutex" and "semaphore" interfaces - where the mutex interface is
15553 much faster because it doesn't have all the overhead of a full
15554 semaphore implementation.
15556 Fixed a deadlock problem where a method that accesses the PCI
15557 address space can block forever if it is the first access to the
15560 -------------------------------------------
15561 Summary of changes for this label: 06_02_00
15563 Support for environments that cannot handle unaligned data
15564 accesses (e.g. firmware and OS environments devoid of alignment
15565 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
15566 been added (via configurable macros) in these three areas: -
15567 Transfer of data from the raw AML byte stream is done via byte
15568 moves instead of word/dword/qword moves. - External objects are
15569 aligned within the user buffer, including package elements (sub-
15570 objects). - Conversion of name strings to UINT32 Acpi Names is now
15573 The Store operator was modified to mimic Microsoft's
15574 implementation when storing to a Buffer Field.
15576 Added a check of the BM_STS bit before entering C3.
15578 The methods subdirectory has been obsoleted and removed. A new
15579 file, cmeval.c subsumes the functionality.
15581 A 16-bit (DOS) version of AcpiExec has been developed. The
15582 makefile is under the acpiexec directory.