1 ----------------------------------------
2 28 August 2014. Summary of changes for version 20140828:
4 1) ACPICA kernel-resident subsystem:
6 Fixed a problem related to the internal use of the Timer() operator where
7 a 64-bit divide could cause an attempted link to a double-precision math
8 library. This divide is not actually necessary, so the code was
9 restructured to eliminate it. Lv Zheng.
11 ACPI 5.1: Added support for the runtime validation of the _DSD package
12 (similar to the iASL support).
14 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
15 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
17 Example Code and Data Size: These are the sizes for the OS-independent
18 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
19 debug version of the code includes the debug output trace mechanism and
20 has a much larger code and data size.
23 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
24 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
26 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
27 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
29 2) iASL Compiler/Disassembler and Tools:
31 AcpiExec: Fixed a problem on unix systems where the original terminal
32 state was not always properly restored upon exit. Seen when using the -v
33 option. ACPICA BZ 1104.
35 iASL: Fixed a problem with the validation of the ranges/length within the
36 Memory24 resource descriptor. There was a boundary condition when the
37 range was equal to the (length -1) caused by the fact that these values
38 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
40 Disassembler: Fixed a problem with the GpioInt descriptor interrupt polarity
41 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword is
42 now supported properly.
44 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
45 in the disassembler, data table compiler, and table template generator.
47 iASL: Added a requirement for Device() objects that one of either a _HID
48 or _ADR must exist within the scope of a Device, as per the ACPI
49 specification. Remove a similar requirement that was incorrectly in place
52 iASL: Added error detection for illegal named references within control
53 methods that would cause runtime failures. Now trapped as errors are: 1)
54 References to objects within a non-parent control method. 2) Forward
55 references (within a method) -- for control methods, AML interpreters use
56 a one-pass parse of control methods. ACPICA BZ 1008.
58 iASL: Added error checking for dependencies related to the _PSx power
59 methods. ACPICA BZ 1029.
60 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
62 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
65 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
66 deploying the existing object and string caches and adding new caches for
69 iASL: Split the huge parser source file into multiple subfiles to improve
70 manageability. Generation now requires the M4 macro preprocessor, which
71 is part of the Bison distribution on both unix and windows platforms.
73 AcpiSrc: Fixed and removed all extraneous warnings generated during
74 entire ACPICA source code scan and/or conversion.
77 ----------------------------------------
79 24 July 2014. Summary of changes for version 20140724:
81 The ACPI 5.1 specification has been released and is available at:
82 http://uefi.org/specs/access
85 0) ACPI 5.1 support in ACPICA:
87 ACPI 5.1 is fully supported in ACPICA as of this release.
89 New predefined names. Support includes iASL and runtime ACPICA
91 _CCA (Cache Coherency Attribute).
92 _DSD (Device-Specific Data). David Box.
94 Modifications to existing ACPI tables. Support includes headers, iASL
95 Data Table compiler, disassembler, and the template generator.
96 FADT - New fields and flags. Graeme Gregory.
97 GTDT - One new subtable and new fields. Tomasz Nowicki.
98 MADT - Two new subtables. Tomasz Nowicki.
99 PCCT - One new subtable.
102 New notification type for System Resource Affinity change events.
105 1) ACPICA kernel-resident subsystem:
107 Fixed a regression introduced in 20140627 where a fault can happen during
108 the deletion of Alias AML namespace objects. The problem affected both
109 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
111 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
112 simple mechanism to enable wake GPEs that have no associated handler or
113 control method. Rafael Wysocki.
115 Updated the AcpiEnableGpe interface to disallow the enable if there is no
116 handler or control method associated with the particular GPE. This will
117 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
119 Updated GPE handling and dispatch by disabling the GPE before clearing
120 the status bit for edge-triggered GPEs. Lv Zheng.
122 Added Timer() support to the AML Debug object. The current timer value is
123 now displayed with each invocation of (Store to) the debug object to
124 enable simple generation of execution times for AML code (method
125 execution for example.) ACPICA BZ 1093.
127 Example Code and Data Size: These are the sizes for the OS-independent
128 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
129 debug version of the code includes the debug output trace mechanism and
130 has a much larger code and data size.
133 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
134 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
136 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
137 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
140 2) iASL Compiler/Disassembler and Tools:
142 Fixed an issue with the recently added local printf implementation,
143 concerning width/precision specifiers that could cause incorrect output.
144 Lv Zheng. ACPICA BZ 1094.
146 Disassembler: Added support to detect buffers that contain UUIDs and
147 disassemble them to an invocation of the ToUUID operator. Also emit
148 commented descriptions of known ACPI-related UUIDs.
150 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
151 -u. Adds three new files.
153 iASL: Update table compiler and disassembler for DMAR table changes that
154 were introduced in September 2013. With assistance by David Woodhouse.
156 ----------------------------------------
157 27 June 2014. Summary of changes for version 20140627:
159 1) ACPICA kernel-resident subsystem:
161 Formatted Output: Implemented local versions of standard formatted output
162 utilities such as printf, etc. Over time, it has been discovered that
163 there are in fact many portability issues with printf, and the addition
164 of this feature will fix/prevent these issues once and for all. Some
165 known issues are summarized below:
167 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
168 for the Linux kernel and is %uI64 for some MSVC versions.
169 2) Invoking printf consistently in a manner that is portable across both
170 32-bit and 64-bit platforms is difficult at best in many situations.
171 3) The output format for pointers varies from system to system (leading
172 zeros especially), and leads to inconsistent output from ACPICA across
174 4) Certain platform-specific printf formats may conflict with ACPICA use.
175 5) If there is no local C library available, ACPICA now has local support
178 -- To address these printf issues in a complete manner, ACPICA now
179 directly implements a small subset of printf format specifiers, only
180 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
182 Implemented support for ACPICA generation within the EFI environment.
183 Initially, the AcpiDump utility is supported in the UEFI shell
184 environment. Lv Zheng.
186 Added a new external interface, AcpiLogError, to improve ACPICA
187 portability. This allows the host to redirect error messages from the
188 ACPICA utilities. Lv Zheng.
190 Added and deployed new OSL file I/O interfaces to improve ACPICA
198 There are C library implementations of these functions in the new file
199 service_layers/oslibcfs.c -- however, the functions can be implemented by
200 the local host in any way necessary. Lv Zheng.
202 Implemented a mechanism to disable/enable ACPI table checksum validation
203 at runtime. This can be useful when loading tables very early during OS
204 initialization when it may not be possible to map the entire table in
205 order to compute the checksum. Lv Zheng.
207 Fixed a buffer allocation issue for the Generic Serial Bus support.
208 Originally, a fixed buffer length was used. This change allows for
209 variable-length buffers based upon the protocol indicated by the field
210 access attributes. Reported by Lan Tianyu. Lv Zheng.
212 Fixed a problem where an object detached from a namespace node was not
213 properly terminated/cleared and could cause a circular list problem if
214 reattached. ACPICA BZ 1063. David Box.
216 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
218 Fixed a possible memory leak in an error return path within the function
219 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
221 Example Code and Data Size: These are the sizes for the OS-independent
222 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
223 debug version of the code includes the debug output trace mechanism and
224 has a much larger code and data size.
227 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
228 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
230 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
231 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
234 2) iASL Compiler/Disassembler and Tools:
236 Disassembler: Add dump of ASCII equivalent text within a comment at the
237 end of each line of the output for the Buffer() ASL operator.
239 AcpiDump: Miscellaneous changes:
240 Fixed repetitive table dump in -n mode.
241 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
242 the ACPI 2.0 GUID fails.
244 iASL: Fixed a problem where the compiler could fault if incorrectly given
245 an acpidump output file as input. ACPICA BZ 1088. David Box.
247 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
248 they are invoked without any arguments.
250 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
251 1086. Colin Ian King.
253 Disassembler: Cleaned up a block of code that extracts a parent Op
254 object. Added a comment that explains that the parent is guaranteed to be
255 valid in this case. ACPICA BZ 1069.
257 ----------------------------------------
258 24 April 2014. Summary of changes for version 20140424:
260 1) ACPICA kernel-resident subsystem:
262 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
263 Some of these tables are known to contain a trailing NULL entry. Lv
266 Removed an extraneous error message for the case where there are a large
267 number of system GPEs (> 124). This was the "32-bit FADT register is too
268 long to convert to GAS struct" message, which is irrelevant for GPEs
269 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
270 (limited capacity) GAS bit length. Also, several changes to ensure proper
271 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
274 Implemented and deployed additional configuration support for the public
275 ACPICA external interfaces. Entire classes of interfaces can now be
276 easily modified or configured out, replaced by stubbed inline functions
277 by default. Lv Zheng.
279 Moved all public ACPICA runtime configuration globals to the public
280 ACPICA external interface file for convenience. Also, removed some
281 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
283 Documentation: Added a new section to the ACPICA reference describing the
284 maximum number of GPEs that can be supported by the FADT-defined GPEs in
285 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
288 Example Code and Data Size: These are the sizes for the OS-independent
289 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
290 debug version of the code includes the debug output trace mechanism and
291 has a much larger code and data size.
294 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
295 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
297 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
298 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
301 2) iASL Compiler/Disassembler and Tools:
303 iASL and disassembler: Add full support for the LPIT table (Low Power
304 Idle Table). Includes support in the disassembler, data table compiler,
305 and template generator.
308 1) Add option to force the use of the RSDT (over the XSDT).
309 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
311 iASL: Add check for predefined packages that are too large. For
312 predefined names that contain subpackages, check if each subpackage is
313 too large. (Check for too small already exists.)
315 Debugger: Updated the GPE command (which simulates a GPE by executing the
316 GPE code paths in ACPICA). The GPE device is now optional, and defaults
317 to the GPE 0/1 FADT-defined blocks.
319 Unix application OSL: Update line-editing support. Add additional error
320 checking and take care not to reset terminal attributes on exit if they
321 were never set. This should help guarantee that the terminal is always
322 left in the previous state on program exit.
324 ----------------------------------------
325 25 March 2014. Summary of changes for version 20140325:
327 1) ACPICA kernel-resident subsystem:
329 Updated the auto-serialize feature for control methods. This feature
330 automatically serializes all methods that create named objects in order
331 to prevent runtime errors. The update adds support to ignore the
332 currently executing AML SyncLevel when invoking such a method, in order
333 to prevent disruption of any existing SyncLevel priorities that may exist
334 in the AML code. Although the use of SyncLevels is relatively rare, this
335 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
336 appear on some machines starting with the 20140214 release.
338 Added a new external interface to allow the host to install ACPI tables
339 very early, before the namespace is even created. AcpiInstallTable gives
340 the host additional flexibility for ACPI table management. Tables can be
341 installed directly by the host as if they had originally appeared in the
342 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
343 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
344 with additional internal restructuring and cleanup. See the ACPICA
345 Reference for interface details. Lv Zheng.
347 Added validation of the checksum for all incoming dynamically loaded
348 tables (via external interfaces or via AML Load/LoadTable operators). Lv
351 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
352 and GPE handler removal. Restructured calls to eliminate possible race
353 conditions. Lv Zheng.
355 Added a warning for the use/execution of the ASL/AML Unload (table)
356 operator. This will help detect and identify machines that use this
357 operator if and when it is ever used. This operator has never been seen
358 in the field and the usage model and possible side-effects of the drastic
359 runtime action of a full table removal are unknown.
361 Reverted the use of #pragma push/pop which was introduced in the 20140214
362 release. It appears that push and pop are not implemented by enough
363 compilers to make the use of this feature feasible for ACPICA at this
364 time. However, these operators may be deployed in a future ACPICA
367 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
370 Source code generation:
371 1) Disabled the use of the "strchr" macro for the gcc-specific
372 generation. For some versions of gcc, this macro can periodically expose
373 a compiler bug which in turn causes compile-time error(s).
374 2) Added support for PPC64 compilation. Colin Ian King.
376 Example Code and Data Size: These are the sizes for the OS-independent
377 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
378 debug version of the code includes the debug output trace mechanism and
379 has a much larger code and data size.
382 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
383 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
385 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
386 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
389 2) iASL Compiler/Disassembler and Tools:
391 Disassembler: Added several new features to improve the readability of
392 the resulting ASL code. Extra information is emitted within comment
393 fields in the ASL code:
394 1) Known _HID/_CID values are decoded to descriptive text.
395 2) Standard values for the Notify() operator are decoded to descriptive
397 3) Target operands are expanded to full pathnames (in a comment) when
400 Disassembler: Miscellaneous updates for extern() handling:
401 1) Abort compiler if file specified by -fe option does not exist.
402 2) Silence unnecessary warnings about argument count mismatches.
403 3) Update warning messages concerning unresolved method externals.
404 4) Emit "UnknownObj" keyword for externals whose type cannot be
408 1) Added the -a option to display both the ASL syntax and the AML
409 encoding for an input ASL operator. This effectively displays all known
410 information about an ASL operator with one AcpiHelp invocation.
411 2) Added substring match support (similar to a wildcard) for the -i
412 (_HID/PNP IDs) option.
414 iASL/Disassembler: Since this tool does not yet support execution on big-
415 endian machines, added detection of endianness and an error message if
416 execution is attempted on big-endian. Support for big-endian within iASL
417 is a feature that is on the ACPICA to-be-done list.
420 1) Remove option to extract binary files from an acpidump; this function
421 is made obsolete by the AcpiXtract utility.
422 2) General cleanup of open files and allocated buffers.
424 ----------------------------------------
425 14 February 2014. Summary of changes for version 20140214:
427 1) ACPICA kernel-resident subsystem:
429 Implemented a new mechanism to proactively prevent problems with ill-
430 behaved reentrant control methods that create named ACPI objects. This
431 behavior is illegal as per the ACPI specification, but is nonetheless
432 frequently seen in the field. Previously, this could lead to an
433 AE_ALREADY_EXISTS exception if the method was actually entered by more
434 than one thread. This new mechanism detects such methods at table load
435 time and marks them "serialized" to prevent reentrancy. A new global
436 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
437 feature if desired. This mechanism and global option obsoletes and
438 supersedes the previous AcpiGbl_SerializeAllMethods option.
440 Added the "Windows 2013" string to the _OSI support. ACPICA will now
441 respond TRUE to _OSI queries with this string. It is the stated policy of
442 ACPICA to add new strings to the _OSI support as soon as possible after
443 they are defined. See the full ACPICA _OSI policy which has been added to
444 the utilities/utosi.c file.
446 Hardened/updated the _PRT return value auto-repair code:
447 1) Do not abort the repair on a single subpackage failure, continue to
448 check all subpackages.
449 2) Add check for the minimum subpackage length (4).
450 3) Properly handle extraneous NULL package elements.
452 Added support to avoid the possibility of infinite loops when traversing
453 object linked lists. Never allow an infinite loop, even in the face of
454 corrupted object lists.
456 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
457 pack(pop) directives to ensure that the ACPICA headers are independent of
458 compiler settings or other host headers.
460 Example Code and Data Size: These are the sizes for the OS-independent
461 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
462 debug version of the code includes the debug output trace mechanism and
463 has a much larger code and data size.
466 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
467 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
469 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
470 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
473 2) iASL Compiler/Disassembler and Tools:
475 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
476 first reserved field was incorrectly forced to have a value of zero. This
477 change correctly forces the field to have a value of one. ACPICA BZ 1081.
479 Debugger: Added missing support for the "Extra" and "Data" subobjects
480 when displaying object data.
482 Debugger: Added support to display entire object linked lists when
483 displaying object data.
485 iASL: Removed the obsolete -g option to obtain ACPI tables from the
486 Windows registry. This feature has been superseded by the acpidump
489 ----------------------------------------
490 14 January 2014. Summary of changes for version 20140114:
492 1) ACPICA kernel-resident subsystem:
494 Updated all ACPICA copyrights and signons to 2014. Added the 2014
495 copyright to all module headers and signons, including the standard Linux
496 header. This affects virtually every file in the ACPICA core subsystem,
497 iASL compiler, all ACPICA utilities, and the test suites.
499 Improved parameter validation for AcpiInstallGpeBlock. Added the
501 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
502 2) There is not already a GPE block attached to the device.
503 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
506 Correctly support "references" in the ACPI_OBJECT. This change fixes the
507 support to allow references (namespace nodes) to be passed as arguments
508 to control methods via the evaluate object interface. This is probably
509 most useful for testing purposes, however.
511 Improved support for 32/64 bit physical addresses in printf()-like
512 output. This change improves the support for physical addresses in printf
513 debug statements and other output on both 32-bit and 64-bit hosts. It
514 consistently outputs the appropriate number of bytes for each host. The
515 %p specifier is unsatisfactory since it does not emit uniform output on
516 all hosts/clib implementations (on some, leading zeros are not supported,
517 leading to difficult-to-read output).
519 Example Code and Data Size: These are the sizes for the OS-independent
520 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
521 debug version of the code includes the debug output trace mechanism and
522 has a much larger code and data size.
525 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
526 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
528 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
529 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
532 2) iASL Compiler/Disassembler and Tools:
534 iASL: Fix a possible fault when using the Connection() operator. Fixes a
535 problem if the parent Field definition for the Connection operator refers
536 to an operation region that does not exist. ACPICA BZ 1064.
538 AcpiExec: Load of local test tables is now optional. The utility has the
539 capability to load some various tables to test features of ACPICA.
540 However, there are enough of them that the output of the utility became
541 confusing. With this change, only the required local tables are displayed
542 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
543 line specification. This makes the default output simler and easier to
544 understand. The -el command line option restores the original behavior
545 for testing purposes.
547 AcpiExec: Added support for overlapping operation regions. This change
548 expands the simulation of operation regions by supporting regions that
549 overlap within the given address space. Supports SystemMemory and
550 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
552 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
553 allows AcpiExec to simulate these address spaces, similar to the current
554 support for SystemMemory and SystemIO.
556 Debugger: Added new command to read/write/compare all namespace objects.
557 The command "test objects" will exercise the entire namespace by writing
558 new values to each data object, and ensuring that the write was
559 successful. The original value is then restored and verified.
561 Debugger: Added the "test predefined" command. This change makes this
562 test public and puts it under the new "test" command. The test executes
563 each and every predefined name within the current namespace.
565 ----------------------------------------
566 18 December 2013. Summary of changes for version 20131218:
568 Global note: The ACPI 5.0A specification was released this month. There
569 are no changes needed for ACPICA since this release of ACPI is an
570 errata/clarification release. The specification is available at
574 1) ACPICA kernel-resident subsystem:
576 Added validation of the XSDT root table if it is present. Some older
577 platforms contain an XSDT that is ill-formed or otherwise invalid (such
578 as containing some or all entries that are NULL pointers). This change
579 adds a new function to validate the XSDT before actually using it. If the
580 XSDT is found to be invalid, ACPICA will now automatically fall back to
581 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
582 ACPICA and enhanced by Lv Zheng and Bob Moore.
584 Added a runtime option to ignore the XSDT and force the use of the RSDT.
585 This change adds a runtime option that will force ACPICA to use the RSDT
586 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
587 requires that an XSDT be used instead of the RSDT, the XSDT has been
588 found to be corrupt or ill-formed on some machines. Lv Zheng.
590 Added a runtime option to favor 32-bit FADT register addresses over the
591 64-bit addresses. This change adds an option to favor 32-bit FADT
592 addresses when there is a conflict between the 32-bit and 64-bit versions
593 of the same register. The default behavior is to use the 64-bit version
594 in accordance with the ACPI specification. This can now be overridden via
595 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
597 During the change above, the internal "Convert FADT" and "Verify FADT"
598 functions have been merged to simplify the code, making it easier to
599 understand and maintain. ACPICA BZ 933.
601 Improve exception reporting and handling for GPE block installation.
602 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
603 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
605 Added helper macros to extract bus/segment numbers from the HEST table.
606 This change adds two macros to extract the encoded bus and segment
607 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
608 Betty Dall <betty.dall@hp.com>
610 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
611 by ACPICA. It is not a public macro, so it should have no effect on
612 existing OSV code. Lv Zheng.
614 Example Code and Data Size: These are the sizes for the OS-independent
615 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
616 debug version of the code includes the debug output trace mechanism and
617 has a much larger code and data size.
620 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
621 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
623 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
624 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
627 2) iASL Compiler/Disassembler and Tools:
629 Disassembler: Improved pathname support for emitted External()
630 statements. This change adds full pathname support for external names
631 that have been resolved internally by the inclusion of additional ACPI
632 tables (via the iASL -e option). Without this change, the disassembler
633 can emit multiple externals for the same object, or it become confused
634 when the Scope() operator is used on an external object. Overall, greatly
635 improves the ability to actually recompile the emitted ASL code when
636 objects a referenced across multiple ACPI tables. Reported by Michael
637 Tsirkin (mst@redhat.com).
639 Tests/ASLTS: Updated functional control suite to execute with no errors.
640 David Box. Fixed several errors related to the testing of the interpreter
641 slack mode. Lv Zheng.
643 iASL: Added support to detect names that are declared within a control
644 method, but are unused (these are temporary names that are only valid
645 during the time the method is executing). A remark is issued for these
646 cases. ACPICA BZ 1022.
648 iASL: Added full support for the DBG2 table. Adds full disassembler,
649 table compiler, and template generator support for the DBG2 table (Debug
652 iASL: Added full support for the PCCT table, update the table definition.
653 Updates the PCCT table definition in the actbl3.h header and adds table
654 compiler and template generator support.
656 iASL: Added an option to emit only error messages (no warnings/remarks).
657 The -ve option will enable only error messages, warnings and remarks are
658 suppressed. This can simplify debugging when only the errors are
659 important, such as when an ACPI table is disassembled and there are many
660 warnings and remarks -- but only the actual errors are of real interest.
662 Example ACPICA code (source/tools/examples): Updated the example code so
663 that it builds to an actual working program, not just example code. Added
664 ACPI tables and execution of an example control method in the DSDT. Added
665 makefile support for Unix generation.
667 ----------------------------------------
668 15 November 2013. Summary of changes for version 20131115:
670 This release is available at https://acpica.org/downloads
673 1) ACPICA kernel-resident subsystem:
675 Resource Manager: Fixed loop termination for the "get AML length"
676 function. The loop previously had an error termination on a NULL resource
677 pointer, which can never happen since the loop simply increments a valid
678 resource pointer. This fix changes the loop to terminate with an error on
679 an invalid end-of-buffer condition. The problem can be seen as an
680 infinite loop by callers to AcpiSetCurrentResources with an invalid or
681 corrupted resource descriptor, or a resource descriptor that is missing
682 an END_TAG descriptor. Reported by Dan Carpenter
683 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
685 Table unload and ACPICA termination: Delete all attached data objects
686 during namespace node deletion. This fix updates namespace node deletion
687 to delete the entire list of attached objects (attached via
688 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
689 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
691 ACPICA termination: Added support to delete all objects attached to the
692 root namespace node. This fix deletes any and all objects that have been
693 attached to the root node via AcpiAttachData. Previously, none of these
694 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
696 Debug output: Do not emit the function nesting level for the in-kernel
697 build. The nesting level is really only useful during a single-thread
698 execution. Therefore, only enable this output for the AcpiExec utility.
699 Also, only emit the thread ID when executing under AcpiExec (Context
700 switches are still always detected and a message is emitted). ACPICA BZ
703 Example Code and Data Size: These are the sizes for the OS-independent
704 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
705 debug version of the code includes the debug output trace mechanism and
706 has a much larger code and data size.
709 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
710 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
712 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
713 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
716 2) iASL Compiler/Disassembler and Tools:
718 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
719 correct portable POSIX header for terminal control functions.
721 Disassembler: Fixed control method invocation issues related to the use
722 of the CondRefOf() operator. The problem is seen in the disassembly where
723 control method invocations may not be disassembled properly if the
724 control method name has been used previously as an argument to CondRefOf.
725 The solution is to not attempt to emit an external declaration for the
726 CondRefOf target (it is not necessary in the first place). This prevents
727 disassembler object type confusion. ACPICA BZ 988.
729 Unix Makefiles: Added an option to disable compiler optimizations and the
730 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
731 with optimizations (reportedly, gcc 4.4 for example). This change adds a
732 command line option for make (NOOPT) that disables all compiler
733 optimizations and the _FORTIFY_SOURCE compiler flag. The default
734 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
735 1034. Lv Zheng, Bob Moore.
737 Tests/ASLTS: Added options to specify individual test cases and modes.
738 This allows testers running aslts.sh to optionally specify individual
739 test modes and test cases. Also added an option to disable the forced
740 generation of the ACPICA tools from source if desired. Lv Zheng.
742 ----------------------------------------
743 27 September 2013. Summary of changes for version 20130927:
745 This release is available at https://acpica.org/downloads
748 1) ACPICA kernel-resident subsystem:
750 Fixed a problem with store operations to reference objects. This change
751 fixes a problem where a Store operation to an ArgX object that contained
753 reference to a field object did not complete the automatic dereference
755 then write to the actual field object. Instead, the object type of the
756 field object was inadvertently changed to match the type of the source
757 operand. The new behavior will actually write to the field object (buffer
758 field or field unit), thus matching the correct ACPI-defined behavior.
760 Implemented support to allow the host to redefine individual OSL
761 prototypes. This change enables the host to redefine OSL prototypes found
762 in the acpiosxf.h file. This allows the host to implement OSL interfaces
763 with a macro or inlined function. Further, it allows the host to add any
764 additional required modifiers such as __iomem, __init, __exit, etc., as
765 necessary on a per-interface basis. Enables maximum flexibility for the
766 OSL interfaces. Lv Zheng.
768 Hardcoded the access width for the FADT-defined reset register. The ACPI
769 specification requires the reset register width to be 8 bits. ACPICA now
770 hardcodes the width to 8 and ignores the FADT width value. This provides
771 compatibility with other ACPI implementations that have allowed BIOS code
772 with bad register width values to go unnoticed. Matthew Garett, Bob
776 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
778 in the OSL header (acpiosxf). The change modifies the position of this
779 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
780 build issues if the OSL defines the implementation of the interface to be
781 an inline stub function. Lv Zheng.
783 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
784 initialization interfaces. This change adds a new macro for the main init
785 and terminate external interfaces in order to support hosts that require
786 additional or different processing for these functions. Changed from
787 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
790 Cleaned up the memory allocation macros for configurability. In the
792 case, the ACPI_ALLOCATE and related macros now resolve directly to their
793 respective AcpiOs* OSL interfaces. Two options:
794 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
795 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
796 2) For AcpiExec (and for debugging), the macros can optionally be
798 to the local ACPICA interfaces that track each allocation (local tracking
799 is used to immediately detect memory leaks).
802 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
803 to predefine this macro to either TRUE or FALSE during the system build.
805 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
807 Example Code and Data Size: These are the sizes for the OS-independent
808 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
809 debug version of the code includes the debug output trace mechanism and
810 has a much larger code and data size.
813 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
814 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
816 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
817 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
820 2) iASL Compiler/Disassembler and Tools:
822 iASL: Implemented wildcard support for the -e option. This simplifies use
823 when there are many SSDTs that must be included to resolve external
825 declarations. ACPICA BZ 1041. Example:
826 iasl -e ssdt*.dat -d dsdt.dat
828 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
829 adds a portable module that implements full history and limited line
830 editing for Unix and Linux systems. It does not use readline() due to
831 portability issues. Instead it uses the POSIX termio interface to put the
832 terminal in raw input mode so that the various special keys can be
834 (such as up/down-arrow for history support and left/right-arrow for line
835 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
837 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
838 one or more spaces. This provides compatible with early or different
839 versions of the AcpiDump utility. ACPICA BZ 1044.
841 AcpiDump: Do not ignore tables that contain only an ACPI table header.
842 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
843 no other data. This change adds support to dump these tables. Any tables
844 shorter than the length of an ACPI table header remain in error (an error
845 message is emitted). Reported by Yi Li.
847 Debugger: Echo actual command along with the "unknown command" message.
849 ----------------------------------------
850 23 August 2013. Summary of changes for version 20130823:
852 1) ACPICA kernel-resident subsystem:
854 Implemented support for host-installed System Control Interrupt (SCI)
855 handlers. Certain ACPI functionality requires the host to handle raw
856 SCIs. For example, the "SCI Doorbell" that is defined for memory power
857 state support requires the host device driver to handle SCIs to examine
858 if the doorbell has been activated. Multiple SCI handlers can be
859 installed to allow for future expansion. New external interfaces are
860 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
861 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
863 Operation region support: Never locally free the handler "context"
864 pointer. This change removes some dangerous code that attempts to free
865 the handler context pointer in some (rare) circumstances. The owner of
866 the handler owns this pointer and the ACPICA code should never touch it.
867 Although not seen to be an issue in any kernel, it did show up as a
868 problem (fault) under AcpiExec. Also, set the internal storage field for
869 the context pointer to zero when the region is deactivated, simply for
870 sanity. David Box. ACPICA BZ 1039.
872 AcpiRead: On error, do not modify the return value target location. If an
873 error happens in the middle of a split 32/32 64-bit I/O operation, do not
874 modify the target of the return value pointer. Makes the code consistent
875 with the rest of ACPICA. Bjorn Helgaas.
877 Example Code and Data Size: These are the sizes for the OS-independent
878 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
879 debug version of the code includes the debug output trace mechanism and
880 has a much larger code and data size.
883 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
884 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
886 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
887 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
890 2) iASL Compiler/Disassembler and Tools:
892 AcpiDump: Implemented several new features and fixed some problems:
893 1) Added support to dump the RSDP, RSDT, and XSDT tables.
894 2) Added support for multiple table instances (SSDT, UEFI).
895 3) Added option to dump "customized" (overridden) tables (-c).
896 4) Fixed a problem where some table filenames were improperly
898 5) Improved some error messages, removed some unnecessary messages.
900 iASL: Implemented additional support for disassembly of ACPI tables that
901 contain invocations of external control methods. The -fe<file> option
902 allows the import of a file that specifies the external methods along
903 with the required number of arguments for each -- allowing for the
904 correct disassembly of the table. This is a workaround for a limitation
905 of AML code where the disassembler often cannot determine the number of
906 arguments required for an external control method and generates incorrect
907 ASL code. See the iASL reference for details. ACPICA BZ 1030.
909 Debugger: Implemented a new command (paths) that displays the full
910 pathnames (namepaths) and object types of all objects in the namespace.
911 This is an alternative to the namespace command.
913 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
914 mechanism and any installed handlers.
916 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
917 This can occur if there are too many parent prefixes in a namepath (for
918 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
920 Application OSLs: Set the return value for the PCI read functions. These
921 functions simply return AE_OK, but should set the return value to zero
922 also. This change implements this. ACPICA BZ 1038.
924 Debugger: Prevent possible command line buffer overflow. Increase the
925 size of a couple of the debugger line buffers, and ensure that overflow
926 cannot happen. ACPICA BZ 1037.
928 iASL: Changed to abort immediately on serious errors during the parsing
929 phase. Due to the nature of ASL, there is no point in attempting to
930 compile these types of errors, and they typically end up causing a
931 cascade of hundreds of errors which obscure the original problem.
933 ----------------------------------------
934 25 July 2013. Summary of changes for version 20130725:
936 1) ACPICA kernel-resident subsystem:
938 Fixed a problem with the DerefOf operator where references to FieldUnits
939 and BufferFields incorrectly returned the parent object, not the actual
940 value of the object. After this change, a dereference of a FieldUnit
941 reference results in a read operation on the field to get the value, and
942 likewise, the appropriate BufferField value is extracted from the target
945 Fixed a problem where the _WAK method could cause a fault under these
946 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
947 method returned no value. The problem is rarely seen because most kernels
948 run ACPICA in slack mode.
950 For the DerefOf operator, a fatal error now results if an attempt is made
951 to dereference a reference (created by the Index operator) to a NULL
952 package element. Provides compatibility with other ACPI implementations,
953 and this behavior will be added to a future version of the ACPI
956 The ACPI Power Management Timer (defined in the FADT) is now optional.
957 This provides compatibility with other ACPI implementations and will
958 appear in the next version of the ACPI specification. If there is no PM
959 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
960 zero in the FADT indicates no PM timer.
962 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
963 allows the host to globally enable/disable all vendor strings, all
964 feature strings, or both. Intended to be primarily used for debugging
965 purposes only. Lv Zheng.
967 Expose the collected _OSI data to the host via a global variable. This
968 data tracks the highest level vendor ID that has been invoked by the BIOS
969 so that the host (and potentially ACPICA itself) can change behaviors
970 based upon the age of the BIOS.
972 Example Code and Data Size: These are the sizes for the OS-independent
973 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
974 debug version of the code includes the debug output trace mechanism and
975 has a much larger code and data size.
978 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
979 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
981 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
982 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
985 2) iASL Compiler/Disassembler and Tools:
987 iASL: Created the following enhancements for the -so option (create
989 1)Add offsets for the last nameseg in each namepath for every supported
991 2)Add support for Processor, Device, Thermal Zone, and Scope objects
992 3)Add the actual AML opcode for the parent object of every supported
994 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
996 Disassembler: Emit all unresolved external symbols in a single block.
997 These are external references to control methods that could not be
998 resolved, and thus, the disassembler had to make a guess at the number of
1001 iASL: The argument to the -T option (create table template) is now
1002 optional. If not specified, the default table is a DSDT, typically the
1005 ----------------------------------------
1006 26 June 2013. Summary of changes for version 20130626:
1008 1) ACPICA kernel-resident subsystem:
1010 Fixed an issue with runtime repair of the _CST object. Null or invalid
1011 elements were not always removed properly. Lv Zheng.
1013 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
1014 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
1015 the maximum number of GPEs is 1016. Use of multiple GPE block devices
1016 makes the system-wide number of GPEs essentially unlimited.
1018 Example Code and Data Size: These are the sizes for the OS-independent
1019 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1020 debug version of the code includes the debug output trace mechanism and
1021 has a much larger code and data size.
1024 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1025 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1027 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1028 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1031 2) iASL Compiler/Disassembler and Tools:
1033 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
1034 hosts. Now supports Linux, FreeBSD, and Windows.
1036 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
1037 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
1039 iASL/Preprocessor: Implemented full support for nested
1040 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
1042 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
1043 max. The original purpose of this constraint was to limit the amount of
1044 debug output. However, the string function in question (UtPrintString) is
1045 now used for the disassembler also, where 256 bytes is insufficient.
1046 Reported by RehabMan@GitHub.
1048 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
1049 tables. ACPICA BZ 999. Lv Zheng.
1051 iASL: Fixed a couple of error exit issues that could result in a "Could
1052 not delete <file>" message during ASL compilation.
1054 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
1055 the actual signatures for these tables are "FACP" and "APIC",
1058 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
1059 tables are allowed to have multiple instances.
1061 ----------------------------------------
1062 17 May 2013. Summary of changes for version 20130517:
1064 1) ACPICA kernel-resident subsystem:
1066 Fixed a regression introduced in version 20130328 for _INI methods. This
1067 change fixes a problem introduced in 20130328 where _INI methods are no
1068 longer executed properly because of a memory block that was not
1069 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
1070 <tomasz.nowicki@linaro.org>.
1072 Fixed a possible problem with the new extended sleep registers in the
1074 5.0 FADT. Do not use these registers (even if populated) unless the HW-
1075 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
1078 Implemented return value repair code for _CST predefined objects: Sort
1080 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
1082 Implemented a debug-only option to disable loading of SSDTs from the
1083 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
1084 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
1085 acglobal.h - ACPICA BZ 1005. Lv Zheng.
1087 Fixed some issues in the ACPICA initialization and termination code:
1088 Tomasz Nowicki <tomasz.nowicki@linaro.org>
1089 1) Clear events initialized flag upon event component termination. ACPICA
1091 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
1092 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
1093 4) Clear debug buffer global on termination to prevent possible multiple
1094 delete. ACPICA BZ 1010.
1096 Standardized all switch() blocks across the entire source base. After
1098 years, different formatting for switch() had crept in. This change makes
1099 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
1101 Split some files to enhance ACPICA modularity and configurability:
1102 1) Split buffer dump routines into utilities/utbuffer.c
1103 2) Split internal error message routines into utilities/uterror.c
1104 3) Split table print utilities into tables/tbprint.c
1105 4) Split iASL command-line option processing into asloptions.c
1107 Makefile enhancements:
1108 1) Support for all new files above.
1109 2) Abort make on errors from any subcomponent. Chao Guan.
1110 3) Add build support for Apple Mac OS X. Liang Qi.
1112 Example Code and Data Size: These are the sizes for the OS-independent
1113 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1114 debug version of the code includes the debug output trace mechanism and
1115 has a much larger code and data size.
1118 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1119 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1121 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1122 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1125 2) iASL Compiler/Disassembler and Tools:
1127 New utility: Implemented an easily portable version of the acpidump
1128 utility to extract ACPI tables from the system (or a file) in an ASCII
1130 dump format. The top-level code implements the various command line
1131 options, file I/O, and table dump routines. To port to a new host, only
1132 three functions need to be implemented to get tables -- since this
1133 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
1134 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
1135 1) The Windows version obtains the ACPI tables from the Registry.
1136 2) The Linux version is under development.
1137 3) Other hosts - If an OS-dependent module is submitted, it will be
1138 distributed with ACPICA.
1140 iASL: Fixed a regression for -D preprocessor option (define symbol). A
1141 restructuring/change to the initialization sequence caused this option to
1142 no longer work properly.
1144 iASL: Implemented a mechanism to disable specific warnings and remarks.
1145 Adds a new command line option, "-vw <messageid> as well as "#pragma
1146 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
1148 iASL: Fix for too-strict package object validation. The package object
1149 validation for return values from the predefined names is a bit too
1150 strict, it does not allow names references within the package (which will
1151 be resolved at runtime.) These types of references cannot be validated at
1152 compile time. This change ignores named references within package objects
1153 for names that return or define static packages.
1155 Debugger: Fixed the 80-character command line limitation for the History
1156 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
1158 iASL: Added control method and package support for the -so option
1159 (generates AML offset table for BIOS support.)
1161 iASL: issue a remark if a non-serialized method creates named objects. If
1162 a thread blocks within the method for any reason, and another thread
1163 enters the method, the method will fail because an attempt will be made
1165 create the same (named) object twice. In this case, issue a remark that
1166 the method should be marked serialized. NOTE: may become a warning later.
1169 ----------------------------------------
1170 18 April 2013. Summary of changes for version 20130418:
1172 1) ACPICA kernel-resident subsystem:
1174 Fixed a possible buffer overrun during some rare but specific field unit
1175 read operations. This overrun can only happen if the DSDT version is 1 --
1176 meaning that all AML integers are 32 bits -- and the field length is
1177 between 33 and 55 bits long. During the read, an internal buffer object
1179 created for the field unit because the field is larger than an integer
1181 bits). However, in this case, the buffer will be incorrectly written
1182 beyond the end because the buffer length is less than the internal
1184 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
1185 long, but a full 8 bytes will be written.
1187 Updated the Embedded Controller "orphan" _REG method support. This refers
1188 to _REG methods under the EC device that have no corresponding operation
1189 region. This is allowed by the ACPI specification. This update removes a
1190 dependency on the existence an ECDT table. It will execute an orphan _REG
1191 method as long as the operation region handler for the EC is installed at
1192 the EC device node and not the namespace root. Rui Zhang (original
1193 update), Bob Moore (update/integrate).
1195 Implemented run-time argument typechecking for all predefined ACPI names
1196 (_STA, _BIF, etc.) This change performs object typechecking on all
1197 incoming arguments for all predefined names executed via
1198 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
1199 passing correct object types as well as the correct number of arguments
1200 (therefore identifying any issues immediately). Also, the ASL/namespace
1201 definition of the predefined name is checked against the ACPI
1202 specification for the proper argument count. Adds one new file,
1205 Changed an exception code for the ASL UnLoad() operator. Changed the
1206 exception code for the case where the input DdbHandle is invalid, from
1207 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
1209 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
1210 global makefile. The use of this flag causes compiler errors on earlier
1211 versions of GCC, so it has been removed for compatibility.
1213 Miscellaneous cleanup:
1214 1) Removed some unused/obsolete macros
1215 2) Fixed a possible memory leak in the _OSI support
1216 3) Removed an unused variable in the predefined name support
1217 4) Windows OSL: remove obsolete reference to a memory list field
1219 Example Code and Data Size: These are the sizes for the OS-independent
1220 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1221 debug version of the code includes the debug output trace mechanism and
1222 has a much larger code and data size.
1225 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1226 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1228 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1229 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1232 2) iASL Compiler/Disassembler and Tools:
1234 AcpiExec: Added installation of a handler for the SystemCMOS address
1235 space. This prevents control method abort if a method accesses this
1238 AcpiExec: Added support for multiple EC devices, and now install EC
1239 operation region handler(s) at the actual EC device instead of the
1240 namespace root. This reflects the typical behavior of host operating
1243 AcpiExec: Updated to ensure that all operation region handlers are
1244 installed before the _REG methods are executed. This prevents a _REG
1245 method from aborting if it accesses an address space has no handler.
1246 AcpiExec installs a handler for every possible address space.
1248 Debugger: Enhanced the "handlers" command to display non-root handlers.
1249 This change enhances the handlers command to display handlers associated
1250 with individual devices throughout the namespace, in addition to the
1251 currently supported display of handlers associated with the root
1255 ASL Test Suite: Several test suite errors have been identified and
1256 resolved, reducing the total error count during execution. Chao Guan.
1258 ----------------------------------------
1259 28 March 2013. Summary of changes for version 20130328:
1261 1) ACPICA kernel-resident subsystem:
1263 Fixed several possible race conditions with the internal object reference
1264 counting mechanism. Some of the external ACPICA interfaces update object
1265 reference counts without holding the interpreter or namespace lock. This
1266 change adds a spinlock to protect reference count updates on the internal
1267 ACPICA objects. Reported by and with assistance from Andriy Gapon
1270 FADT support: Removed an extraneous warning for very large GPE register
1271 sets. This change removes a size mismatch warning if the legacy length
1272 field for a GPE register set is larger than the 64-bit GAS structure can
1273 accommodate. GPE register sets can be larger than the 255-bit width
1274 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1276 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1277 return from this interface. Handles a possible timeout case if
1278 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1279 "forever". Jung-uk Kim.
1281 Predefined name support: Add allowed/required argument type information
1283 the master predefined info table. This change adds the infrastructure to
1284 enable typechecking on incoming arguments for all predefined
1285 methods/objects. It does not actually contain the code that will fully
1286 utilize this information, this is still under development. Also condenses
1287 some duplicate code for the predefined names into a new module,
1288 utilities/utpredef.c
1290 Example Code and Data Size: These are the sizes for the OS-independent
1291 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1292 debug version of the code includes the debug output trace mechanism and
1293 has a much larger code and data size.
1296 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1297 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1299 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1300 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1303 2) iASL Compiler/Disassembler and Tools:
1305 iASL: Implemented a new option to simplify the development of ACPI-
1307 BIOS code. Adds support for a new "offset table" output file. The -so
1308 option will create a C table containing the AML table offsets of various
1309 named objects in the namespace so that BIOS code can modify them easily
1311 boot time. This can simplify BIOS runtime code by eliminating expensive
1312 searches for "magic values", enhancing boot times and adding greater
1313 reliability. With assistance from Lee Hamel.
1315 iASL: Allow additional predefined names to return zero-length packages.
1316 Now, all predefined names that are defined by the ACPI specification to
1317 return a "variable-length package of packages" are allowed to return a
1318 zero length top-level package. This allows the BIOS to tell the host that
1319 the requested feature is not supported, and supports existing BIOS/ASL
1322 iASL: Changed the "result not used" warning to an error. This is the case
1323 where an ASL operator is effectively a NOOP because the result of the
1324 operation is not stored anywhere. For example:
1326 There is no target (missing 3rd argument), nor is the function return
1327 value used. This is potentially a very serious problem -- since the code
1328 was probably intended to do something, but for whatever reason, the value
1329 was not stored. Therefore, this issue has been upgraded from a warning to
1332 AcpiHelp: Added allowable/required argument types to the predefined names
1333 info display. This feature utilizes the recent update to the predefined
1334 names table (above).
1336 ----------------------------------------
1337 14 February 2013. Summary of changes for version 20130214:
1339 1) ACPICA Kernel-resident Subsystem:
1341 Fixed a possible regression on some hosts: Reinstated the safe return
1342 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1343 evaluated only once. Although these macros are not needed for the ACPICA
1344 code itself, they are often used by ACPI-related host device drivers
1346 the safe feature may be necessary.
1348 Fixed several issues related to the ACPI 5.0 reduced hardware support
1349 (SOC): Now ensure that if the platform declares itself as hardware-
1351 via the FADT, the following functions become NOOPs (and always return
1352 AE_OK) because ACPI is always enabled by definition on these machines:
1358 Dynamic Object Repair: Implemented additional runtime repairs for
1359 predefined name return values. Both of these repairs can simplify code in
1360 the related device drivers that invoke these methods:
1361 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1362 string to a Unicode buffer.
1363 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1365 lone end tag descriptor in the following cases: A Return(0) was executed,
1366 a null buffer was returned, or no object at all was returned (non-slack
1367 mode only). Adds a new file, nsconvert.c
1368 ACPICA BZ 998. Bob Moore, Lv Zheng.
1370 Resource Manager: Added additional code to prevent possible infinite
1372 while traversing corrupted or ill-formed resource template buffers. Check
1373 for zero-length resource descriptors in all code that loops through
1374 resource templates (the length field is used to index through the
1375 template). This change also hardens the external AcpiWalkResources and
1376 AcpiWalkResourceBuffer interfaces.
1378 Local Cache Manager: Enhanced the main data structure to eliminate an
1379 unnecessary mechanism to access the next object in the list. Actually
1380 provides a small performance enhancement for hosts that use the local
1381 ACPICA cache manager. Jung-uk Kim.
1383 Example Code and Data Size: These are the sizes for the OS-independent
1384 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1385 debug version of the code includes the debug output trace mechanism and
1386 has a much larger code and data size.
1389 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1390 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1392 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1393 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1396 2) iASL Compiler/Disassembler and Tools:
1398 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1399 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1400 that were made to the ACPI 5.0 specification.
1402 iASL/Disassembler: Added full support for the following new ACPI tables:
1403 1) The MTMR table (MID Timer Table)
1404 2) The VRTC table (Virtual Real Time Clock Table).
1405 Includes header file, disassembler, table compiler, and template support
1408 iASL: Implemented compile-time validation of package objects returned by
1409 predefined names. This new feature validates static package objects
1410 returned by the various predefined names defined to return packages. Both
1411 object types and package lengths are validated, for both parent packages
1412 and sub-packages, if any. The code is similar in structure and behavior
1414 the runtime repair mechanism within the AML interpreter and uses the
1415 existing predefined name information table. Adds a new file, aslprepkg.c.
1418 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1419 This feature detects a binary file with a valid ACPI table header and
1420 invokes the disassembler automatically. Eliminates the need to
1421 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1423 iASL/Disassembler: Added several warnings for the case where there are
1424 unresolved control methods during the disassembly. This can potentially
1425 cause errors when the output file is compiled, because the disassembler
1426 assumes zero method arguments in these cases (it cannot determine the
1427 actual number of arguments without resolution/definition of the method).
1429 Debugger: Added support to display all resources with a single command.
1430 Invocation of the resources command with no arguments will now display
1432 resources within the current namespace.
1434 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1437 ----------------------------------------
1438 17 January 2013. Summary of changes for version 20130117:
1440 1) ACPICA Kernel-resident Subsystem:
1442 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1443 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1444 objects to return a package containing one integer, most BIOS code
1446 two integers and the previous code reflects that. However, we also need
1448 support BIOS code that actually implements to the ACPI spec, and this
1449 change reflects this.
1451 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1452 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1453 C compilers that require this support.
1454 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1455 ACPI_DEBUG is already used by many of the various hosts.
1457 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1458 copyright to all module headers and signons, including the standard Linux
1459 header. This affects virtually every file in the ACPICA core subsystem,
1460 iASL compiler, all ACPICA utilities, and the test suites.
1462 Example Code and Data Size: These are the sizes for the OS-independent
1463 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1464 debug version of the code includes the debug output trace mechanism and
1465 has a much larger code and data size.
1468 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1469 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1471 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1472 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1475 2) iASL Compiler/Disassembler and Tools:
1477 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1478 prevent a possible fault on some hosts. Some C libraries modify the arg
1479 pointer parameter to vfprintf making it difficult to call it twice in the
1480 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1481 does not affect the Windows OSL since the Win C library does not modify
1482 the arg pointer. Chao Guan, Bob Moore.
1484 iASL: Fixed a possible infinite loop when the maximum error count is
1485 reached. If an output file other than the .AML file is specified (such as
1486 a listing file), and the maximum number of errors is reached, do not
1487 attempt to flush data to the output file(s) as the compiler is aborting.
1488 This can cause an infinite loop as the max error count code essentially
1489 keeps calling itself.
1491 iASL/Disassembler: Added an option (-in) to ignore NOOP
1493 Implemented for both the compiler and the disassembler. Often, the NOOP
1494 opcode is used as padding for packages that are changed dynamically by
1496 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1497 errors. This option causes the disassembler to ignore all NOOP opcodes
1498 (0xA3), and it also causes the compiler to ignore all ASL source code
1502 Debugger: Enhanced the Sleep command to execute all sleep states. This
1503 change allows Sleep to be invoked with no arguments and causes the
1504 debugger to execute all of the sleep states, 0-5, automatically.
1506 ----------------------------------------
1507 20 December 2012. Summary of changes for version 20121220:
1509 1) ACPICA Kernel-resident Subsystem:
1511 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1512 alternate entry point for AcpiWalkResources and improves the usability of
1513 the resource manager by accepting as input a buffer containing the output
1514 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1515 input buffer is not deleted by this interface so that it can be used by
1516 the host later. See the ACPICA reference for details.
1518 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1519 (DSDT version < 2). The constant will be truncated and this warning
1520 reflects that behavior.
1522 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1523 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1524 both get and set the new wake bit in these descriptors, separately from
1525 the existing share bit. Reported by Aaron Lu.
1527 Interpreter: Fix Store() when an implicit conversion is not possible. For
1528 example, in the cases such as a store of a string to an existing package
1529 object, implement the store as a CopyObject(). This is a small departure
1530 from the ACPI specification which states that the control method should
1532 aborted in this case. However, the ASLTS suite depends on this behavior.
1534 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1535 macros: check if debug output is currently enabled as soon as possible to
1536 minimize performance impact if debug is in fact not enabled.
1538 Source code restructuring: Cleanup to improve modularity. The following
1539 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1540 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1541 Associated makefiles and project files have been updated.
1543 Changed an exception code for LoadTable operator. For the case where one
1544 of the input strings is too long, change the returned exception code from
1545 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1547 Fixed a possible memory leak in dispatcher error path. On error, delete
1548 the mutex object created during method mutex creation. Reported by
1549 tim.gardner@canonical.com.
1551 Example Code and Data Size: These are the sizes for the OS-independent
1552 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1553 debug version of the code includes the debug output trace mechanism and
1554 has a much larger code and data size.
1557 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1558 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1560 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1561 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1564 2) iASL Compiler/Disassembler and Tools:
1566 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1567 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1568 will not allow the interpreter to differentiate between a method and a
1569 method invocation when these are used as an argument to the ObjectType
1570 operator. The ACPI specification change is to disallow a method
1572 (UserTerm) for the ObjectType operator.
1574 Finish support for the TPM2 and CSRT tables in the headers, table
1575 compiler, and disassembler.
1577 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1578 always expires immediately if the semaphore is not available. The
1580 code was using a relative-time timeout, but sem_timedwait requires the
1582 of an absolute time.
1584 iASL: Added a remark if the Timer() operator is used within a 32-bit
1585 table. This operator returns a 64-bit time value that will be truncated
1586 within a 32-bit table.
1588 iASL Source code restructuring: Cleanup to improve modularity. The
1589 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1590 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1594 ----------------------------------------
1595 14 November 2012. Summary of changes for version 20121114:
1597 1) ACPICA Kernel-resident Subsystem:
1599 Implemented a performance enhancement for ACPI/AML Package objects. This
1600 change greatly increases the performance of Package objects within the
1601 interpreter. It changes the processing of reference counts for packages
1603 optimizing for the most common case where the package sub-objects are
1604 either Integers, Strings, or Buffers. Increases the overall performance
1606 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1608 Chao Guan. ACPICA BZ 943.
1610 Implemented and deployed common macros to extract flag bits from resource
1611 descriptors. Improves readability and maintainability of the code. Fixes
1613 problem with the UART serial bus descriptor for the number of data bits
1614 flags (was incorrectly 2 bits, should be 3).
1616 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1617 of the macros and changed the SETx macros to the style of (destination,
1618 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1620 Example Code and Data Size: These are the sizes for the OS-independent
1621 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1622 debug version of the code includes the debug output trace mechanism and
1623 has a much larger code and data size.
1626 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1627 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1629 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1630 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1633 2) iASL Compiler/Disassembler and Tools:
1635 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1636 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1637 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1639 Disassembler: Fixed a problem with external declaration generation. Fixes
1640 a problem where an incorrect pathname could be generated for an external
1641 declaration if the original reference to the object includes leading
1642 carats (^). ACPICA BZ 984.
1644 Debugger: Completed a major update for the Disassemble<method> command.
1645 This command was out-of-date and did not properly disassemble control
1646 methods that had any reasonable complexity. This fix brings the command
1648 to the same level as the rest of the disassembler. Adds one new file,
1649 dmdeferred.c, which is existing code that is now common with the main
1650 disassembler and the debugger disassemble command. ACPICA MZ 978.
1652 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1653 Newer versions of Bison emit this prototype, so moved the prototype out
1655 the iASL header to where it is actually used in order to avoid a
1659 iASL/Tools: Standardized use of the stream I/O functions:
1660 1) Ensure check for I/O error after every fopen/fread/fwrite
1661 2) Ensure proper order of size/count arguments for fread/fwrite
1662 3) Use test of (Actual != Requested) after all fwrite, and most fread
1663 4) Standardize I/O error messages
1664 Improves reliability and maintainability of the code. Bob Moore, Lv
1668 Disassembler: Prevent duplicate External() statements. During generation
1669 of external statements, detect similar pathnames that are actually
1670 duplicates such as these:
1673 Remove all leading '\' characters from pathnames during the external
1674 statement generation so that duplicates will be detected and tossed.
1677 Tools: Replace low-level I/O with stream I/O functions. Replace
1678 open/read/write/close with the stream I/O equivalents
1679 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1682 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1683 name header so that AcpiXtract recognizes the output file/table.
1685 iASL: Remove obsolete -2 option flag. Originally intended to force the
1686 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1687 and the entire concept is now obsolete.
1689 ----------------------------------------
1690 18 October 2012. Summary of changes for version 20121018:
1693 1) ACPICA Kernel-resident Subsystem:
1695 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1696 introduced by late changes to the table as it was added to the ACPI 5.0
1697 specification. Includes header, disassembler, and data table compiler
1698 support as well as a new version of the MPST template.
1700 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1701 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1702 methods: _HID, _CID, and _UID.
1704 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1705 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1706 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1707 names for their various drivers. Affects the AcpiGetObjectInfo external
1708 interface, and other internal interfaces as well.
1710 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1711 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
1712 on machines that support non-aligned transfers. Optimizes for this case
1713 rather than using a strncpy. With assistance from Zheng Lv.
1715 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
1716 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
1718 Added a new debug print message for AML mutex objects that are force-
1719 released. At control method termination, any currently acquired mutex
1720 objects are force-released. Adds a new debug-only message for each one
1723 Audited/updated all ACPICA return macros and the function debug depth
1724 counter: 1) Ensure that all functions that use the various TRACE macros
1725 also use the appropriate ACPICA return macros. 2) Ensure that all normal
1726 return statements surround the return expression (value) with parens to
1727 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
1728 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
1730 Global source code changes/maintenance: All extra lines at the start and
1731 end of each source file have been removed for consistency. Also, within
1732 comments, all new sentences start with a single space instead of a double
1733 space, again for consistency across the code base.
1735 Example Code and Data Size: These are the sizes for the OS-independent
1736 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1737 debug version of the code includes the debug output trace mechanism and
1738 has a much larger code and data size.
1741 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1742 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1744 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1745 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1748 2) iASL Compiler/Disassembler and Tools:
1750 AcpiExec: Improved the algorithm used for memory leak/corruption
1751 detection. Added some intelligence to the code that maintains the global
1752 list of allocated memory. The list is now ordered by allocated memory
1753 address, significantly improving performance. When running AcpiExec on
1754 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
1755 on the platform and/or the environment. Note, this performance
1756 enhancement affects the AcpiExec utility only, not the kernel-resident
1759 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
1760 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
1761 incorrect table offset reported for invalid opcodes. Report the original
1762 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
1764 Disassembler: Enhanced the -vt option to emit the binary table data in
1765 hex format to assist with debugging.
1767 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
1768 size of file structure. Colin Ian King.
1770 ----------------------------------------
1771 13 September 2012. Summary of changes for version 20120913:
1774 1) ACPICA Kernel-resident Subsystem:
1776 ACPI 5.0: Added two new notify types for the Hardware Error Notification
1777 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
1781 Table Manager: Merged/removed duplicate code in the root table resize
1782 functions. One function is external, the other is internal. Lv Zheng,
1786 Makefiles: Completely removed the obsolete "Linux" makefiles under
1787 acpica/generate/linux. These makefiles are obsolete and have been
1790 the generic unix makefiles under acpica/generate/unix.
1792 Makefiles: Ensure that binary files always copied properly. Minor rule
1794 to ensure that the final binary output files are always copied up to the
1795 appropriate binary directory (bin32 or bin64.)
1797 Example Code and Data Size: These are the sizes for the OS-independent
1798 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1800 version of the code includes the debug output trace mechanism and has a
1802 larger code and data size.
1805 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1806 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1808 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1809 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1812 2) iASL Compiler/Disassembler and Tools:
1814 Disassembler: Fixed a possible fault during the disassembly of resource
1815 descriptors when a second parse is required because of the invocation of
1816 external control methods within the table. With assistance from
1817 adq@lidskialf.net. ACPICA BZ 976.
1819 iASL: Fixed a namepath optimization problem. An error can occur if the
1821 node that contains the namepath to be optimized does not have a parent
1823 that is a named object. This change fixes the problem.
1825 iASL: Fixed a regression where the AML file is not deleted on errors. The
1827 output file should be deleted if there are any errors during the
1830 only exception is if the -f (force output) option is used. ACPICA BZ 974.
1832 iASL: Added a feature to automatically increase internal line buffer
1834 Via realloc(), automatically increase the internal line buffer sizes as
1835 necessary to support very long source code lines. The current version of
1837 preprocessor requires a buffer long enough to contain full source code
1839 This change increases the line buffer(s) if the input lines go beyond the
1840 current buffer size. This eliminates errors that occurred when a source
1842 line was longer than the buffer.
1844 iASL: Fixed a problem with constant folding in method declarations. The
1845 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
1847 Type3 opcode was used.
1849 Debugger: Improved command help support. For incorrect argument count,
1851 full help for the command. For help command itself, allow an argument to
1854 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
1855 errors during execution of the suite. Guan Chao.
1857 ----------------------------------------
1858 16 August 2012. Summary of changes for version 20120816:
1861 1) ACPICA Kernel-resident Subsystem:
1863 Removed all use of the deprecated _GTS and _BFS predefined methods. The
1865 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
1866 deprecated and will probably be removed from the ACPI specification.
1868 does not invoke them, and reportedly never will. The final nail in the
1870 is that the ACPI specification states that these methods must be run with
1871 interrupts off, which is not going to happen in a kernel interpreter.
1873 Linux has removed all use of the methods also. It was discovered that
1874 invoking these functions caused failures on some machines, probably
1876 they were never tested since Windows does not call them. Affects two
1878 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
1881 Implemented support for complex bit-packed buffers returned from the _PLD
1882 (Physical Location of Device) predefined method. Adds a new external
1883 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
1885 structure. Note: C Bitfields cannot be used for this type of predefined
1886 structure since the memory layout of individual bitfields is not defined
1888 the C language. In addition, there are endian concerns where a compiler
1890 change the bitfield ordering based on the machine type. The new ACPICA
1891 interface eliminates these issues, and should be called after _PLD is
1892 executed. ACPICA BZ 954.
1894 Implemented a change to allow a scope change to root (via "Scope (\)")
1896 execution of module-level ASL code (code that is executed at table load
1899 Added the Windows8/Server2012 string for the _OSI method. This change
1902 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
1905 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
1907 and CSRT (Core System Resource Table).
1909 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
1910 names. This simplifies access to the buffers returned by these predefined
1911 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
1913 GPE support: Removed an extraneous parameter from the various low-level
1914 internal GPE functions. Tang Feng.
1916 Removed the linux makefiles from the unix packages. The generate/linux
1917 makefiles are obsolete and have been removed from the unix tarball
1919 packages. The replacement makefiles are under generate/unix, and there is
1921 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
1923 Updates for Unix makefiles:
1924 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
1925 2) Update linker flags (move to end of command line) for AcpiExec
1929 Split ACPICA initialization functions to new file, utxfinit.c. Split from
1930 utxface.c to improve modularity and reduce file size.
1932 Example Code and Data Size: These are the sizes for the OS-independent
1933 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1934 debug version of the code includes the debug output trace mechanism and
1936 much larger code and data size.
1939 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1940 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1942 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1943 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1946 2) iASL Compiler/Disassembler and Tools:
1948 iASL: Fixed a problem with constant folding for fixed-length constant
1949 expressions. The constant-folding code was not being invoked for constant
1950 expressions that allow the use of type 3/4/5 opcodes to generate
1952 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
1954 in the generation of invalid AML bytecode. ACPICA BZ 970.
1956 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
1957 apparently automatically emit some of the necessary externals. This
1959 handles these versions in order to eliminate generation warnings.
1961 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
1963 Disassembler: Add support to decode _PLD buffers. The decoded buffer
1965 within comments in the output file.
1967 Debugger: Fixed a regression with the "Threads" command where
1968 AE_BAD_PARAMETER was always returned.
1970 ----------------------------------------
1971 11 July 2012. Summary of changes for version 20120711:
1973 1) ACPICA Kernel-resident Subsystem:
1975 Fixed a possible fault in the return package object repair code. Fixes a
1976 problem that can occur when a lone package object is wrapped with an
1978 package object in order to force conformance to the ACPI specification.
1980 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
1984 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
1985 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
1986 ARB_DIS bit must be implemented in the host-dependent C3 processor power
1988 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
1990 Intel and other vendors. (for Intel: ICH4-M and earlier)
1992 This change removes the code to disable/enable bus master arbitration
1994 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
1996 resume problems on some machines. The change has been in use for over
2000 Implemented two new external interfaces to support host-directed dynamic
2002 table load and unload. They are intended to simplify the host
2004 of hot-plug support:
2005 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
2006 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
2008 See the ACPICA reference for additional details. Adds one new file,
2009 components/tables/tbxfload.c
2011 Implemented and deployed two new interfaces for errors and warnings that
2013 known to be caused by BIOS/firmware issues:
2014 AcpiBiosError: Prints "ACPI Firmware Error" message.
2015 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
2016 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
2018 and FADT errors. Additional deployment to be completed as appropriate in
2020 future. The associated conditional macros are ACPI_BIOS_ERROR and
2021 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
2026 Implicit notify support: ensure that no memory allocation occurs within a
2027 critical region. This fix moves a memory allocation outside of the time
2029 spinlock is held. Fixes issues on systems that do not allow this
2033 Split exception code utilities and tables into a new file,
2036 Example Code and Data Size: These are the sizes for the OS-independent
2037 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2039 version of the code includes the debug output trace mechanism and has a
2041 larger code and data size.
2044 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2045 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2047 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2048 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2051 2) iASL Compiler/Disassembler and Tools:
2053 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
2057 Debugger: Enhanced the "tables" command to emit additional information
2059 the current set of ACPI tables, including the owner ID and flags decode.
2061 Debugger: Reimplemented the "unload" command to use the new
2062 AcpiUnloadParentTable external interface. This command was disable
2064 due to need for an unload interface.
2066 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
2068 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
2070 ----------------------------------------
2071 20 June 2012. Summary of changes for version 20120620:
2074 1) ACPICA Kernel-resident Subsystem:
2076 Implemented support to expand the "implicit notify" feature to allow
2078 devices to be notified by a single GPE. This feature automatically
2080 runtime device notification in the absence of a BIOS-provided GPE control
2081 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
2083 provided by ACPICA for Windows compatibility, and is a workaround for
2086 code errors. See the description of the AcpiSetupGpeForWake interface in
2088 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
2090 Changed some comments and internal function names to simplify and ensure
2091 correctness of the Linux code translation. No functional changes.
2093 Example Code and Data Size: These are the sizes for the OS-independent
2094 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2096 version of the code includes the debug output trace mechanism and has a
2098 larger code and data size.
2101 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2102 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2104 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2105 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2108 2) iASL Compiler/Disassembler and Tools:
2110 Disassembler: Added support to emit short, commented descriptions for the
2112 predefined names in order to improve the readability of the disassembled
2113 output. ACPICA BZ 959. Changes include:
2114 1) Emit descriptions for all standard predefined names (_INI, _STA,
2117 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
2118 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
2121 AcpiSrc: Fixed several long-standing Linux code translation issues.
2123 descriptions in function headers are now translated properly to lower
2126 underscores. ACPICA BZ 961. Also fixes translation problems such as
2132 local_fADT -> local_FADT
2133 execute_oSI -> execute_OSI
2135 iASL: Fixed a problem where null bytes were inadvertently emitted into
2139 iASL: Added the existing debug options to the standard help screen. There
2141 no longer two different help screens. ACPICA BZ 957.
2143 AcpiHelp: Fixed some typos in the various predefined name descriptions.
2145 expand some of the descriptions where appropriate.
2147 iASL: Fixed the -ot option (display compile times/statistics). Was not
2149 properly for standard output; only worked for the debug file case.
2151 ----------------------------------------
2152 18 May 2012. Summary of changes for version 20120518:
2155 1) ACPICA Core Subsystem:
2157 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
2159 to block until asynchronous events such as notifies and GPEs have
2161 Within ACPICA, it is only called before a notify or GPE handler is
2162 removed/uninstalled. It also may be useful for the host OS within related
2163 drivers such as the Embedded Controller driver. See the ACPICA reference
2165 additional information. ACPICA BZ 868.
2167 ACPI Tables: Added a new error message for a possible overflow failure
2169 the conversion of FADT 32-bit legacy register addresses to internal
2172 bit GAS structure representation. The GAS has a one-byte "bit length"
2174 thus limiting the register length to 255 bits. ACPICA BZ 953.
2176 Example Code and Data Size: These are the sizes for the OS-independent
2177 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2179 version of the code includes the debug output trace mechanism and has a
2181 larger code and data size.
2184 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2185 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2187 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2188 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2191 2) iASL Compiler/Disassembler and Tools:
2193 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
2195 This keyword was added late in the ACPI 5.0 release cycle and was not
2196 implemented until now.
2198 Disassembler: Added support for Operation Region externals. Adds missing
2199 support for operation regions that are defined in another table, and
2200 referenced locally via a Field or BankField ASL operator. Now generates
2202 correct External statement.
2204 Disassembler: Several additional fixes for the External() statement
2206 related to some ASL operators. Also, order the External() statements
2207 alphabetically in the disassembler output. Fixes the External()
2210 the Create* field, Alias, and Scope operators:
2211 1) Create* buffer field operators - fix type mismatch warning on
2213 2) Alias - implement missing External support
2214 3) Scope - fix to make sure all necessary externals are emitted.
2216 iASL: Improved pathname support. For include files, merge the prefix
2218 with the file pathname and eliminate unnecessary components. Convert
2219 backslashes in all pathnames to forward slashes, for readability. Include
2221 pathname changes affect both #include and Include() type operators.
2223 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
2225 of a valid line by inserting a newline and then returning the EOF during
2227 next call to GetNextLine. Prevents the line from being ignored due to EOF
2230 iASL: Implemented some changes to enhance the IDE support (-vi option.)
2232 and Warning messages are now correctly recognized for both the source
2234 browser and the global error and warning counts.
2236 ----------------------------------------
2237 20 April 2012. Summary of changes for version 20120420:
2240 1) ACPICA Core Subsystem:
2242 Implemented support for multiple notify handlers. This change adds
2245 allow multiple system and device notify handlers on Device, Thermal Zone,
2247 Processor objects. This can simplify the host OS notification
2249 Also re-worked and restructured the entire notify support code to
2251 handler installation, handler removal, notify event queuing, and notify
2252 dispatch to handler(s). Note: there can still only be two global notify
2253 handlers - one for system notifies and one for device notifies. There are
2255 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2256 Moore, Rafael Wysocki.
2258 Fixed a regression in the package repair code where the object reference
2259 count was calculated incorrectly. Regression was introduced in the commit
2260 "Support to add Package wrappers".
2262 Fixed a couple possible memory leaks in the AML parser, in the error
2264 path. Jesper Juhl, Lin Ming.
2266 Example Code and Data Size: These are the sizes for the OS-independent
2267 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2268 debug version of the code includes the debug output trace mechanism and
2270 much larger code and data size.
2273 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2274 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2276 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2277 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2280 2) iASL Compiler/Disassembler and Tools:
2282 iASL: Fixed a problem with the resource descriptor support where the
2284 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2285 included in cumulative descriptor offset, resulting in incorrect values
2287 resource tags within resource descriptors appearing after a
2289 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2291 iASL and Preprocessor: Implemented full support for the #line directive
2293 correctly track original source file line numbers through the .i
2295 output file - for error and warning messages.
2297 iASL: Expand the allowable byte constants for address space IDs.
2299 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2300 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2302 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2304 iASL: Add option to completely disable the preprocessor (-Pn).
2306 iASL: Now emit all error/warning messages to standard error (stderr) by
2307 default (instead of the previous stdout).
2309 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2311 for resource descriptor offset fix above. Update/cleanup error output
2312 routines. Enable and send iASL errors/warnings to an error logfile
2313 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2315 several extraneous "unrecognized operator" messages.
2317 ----------------------------------------
2318 20 March 2012. Summary of changes for version 20120320:
2321 1) ACPICA Core Subsystem:
2323 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2324 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2326 does not execute these methods, and therefore these methods are often
2327 untested. It has been seen on some systems where the execution of these
2328 methods causes errors and also prevents the machine from entering S5. It
2330 therefore suggested that host operating systems do not execute these
2332 by default. In the future, perhaps these methods can be optionally
2334 based on the age of the system and/or what is the newest version of
2336 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2338 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2341 Fixed a problem where the length of the local/common FADT was set too
2343 The local FADT table length cannot be set to the common length until the
2344 original length has been examined. There is code that checks the table
2346 and sets various fields appropriately. This can affect older machines
2348 early FADT versions. For example, this can cause inadvertent writes to
2350 CST_CNT register. Julian Anastasov.
2352 Fixed a mapping issue related to a physical table override. Use the
2354 mapping mechanism for tables loaded via the physical override OSL
2356 This allows for early mapping before the virtual memory manager is
2358 Thomas Renninger, Bob Moore.
2360 Enhanced the automatic return-object repair code: Repair a common problem
2362 predefined methods that are defined to return a variable-length Package
2364 sub-objects. If there is only one sub-object, some BIOS ASL code
2366 simply returns the single object instead of a Package with one sub-
2368 This new support will repair this error by wrapping a Package object
2370 the original object, creating the correct and expected Package with one
2372 object. Names that can be repaired in this manner include: _ALR, _CSD,
2374 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2377 Changed the exception code returned for invalid ACPI paths passed as
2378 parameters to external interfaces such as AcpiEvaluateObject. Was
2379 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2381 Example Code and Data Size: These are the sizes for the OS-independent
2382 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2384 version of the code includes the debug output trace mechanism and has a
2386 larger code and data size.
2389 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2390 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2392 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2393 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2396 2) iASL Compiler/Disassembler and Tools:
2398 iASL: Added the infrastructure and initial implementation of a integrated
2400 like preprocessor. This will simplify BIOS development process by
2402 the need for a separate preprocessing step during builds. On Windows, it
2404 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2405 features including full #define() macro support are still under
2407 These preprocessor directives are supported:
2420 In addition, these new command line options are supported:
2421 -D <symbol> Define symbol for preprocessor use
2422 -li Create preprocessed output file (*.i)
2423 -P Preprocess only and create preprocessor output file (*.i)
2425 Table Compiler: Fixed a problem where the equals operator within an
2427 did not work properly.
2429 Updated iASL to use the current versions of Bison/Flex. Updated the
2431 project file to invoke these tools from the standard location. ACPICA BZ
2434 Flex for Windows: V2.5.4
2435 Bison for Windows: V2.4.1
2437 ----------------------------------------
2438 15 February 2012. Summary of changes for version 20120215:
2441 1) ACPICA Core Subsystem:
2443 There have been some major changes to the sleep/wake support code, as
2444 described below (a - e).
2446 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2447 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2448 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2450 time the _BFS method is called and the _WAK method is called. NOTE: all
2452 must update their wake/resume code or else sleep/wake will not work
2456 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2458 method. Some machines require that the GPEs are enabled before the _WAK
2460 is executed. Thomas Renninger.
2462 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2464 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2466 determine whether the system is rebooting or resuming. Matthew Garrett.
2468 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2470 match the ACPI specification requirement. Rafael Wysocki.
2472 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2473 registers within the V5 FADT. This support adds two new files:
2474 hardware/hwesleep.c implements the support for the new registers. Moved
2476 sleep/wake external interfaces to hardware/hwxfsleep.c.
2479 Added a new OSL interface for ACPI table overrides,
2480 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2481 table via a physical address, instead of the logical address required by
2482 AcpiOsTableOverride. This simplifies the host implementation. Initial
2483 implementation by Thomas Renninger. The ACPICA implementation creates a
2485 shared function for table overrides that attempts both a logical and a
2488 Expanded the OSL memory read/write interfaces to 64-bit data
2489 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2490 transfer support for GAS register structures passed to AcpiRead and
2493 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2495 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2497 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2499 10% of the code and 5% of the static data, and the following hardware
2501 features become unavailable:
2502 PM Event and Control registers
2503 SCI interrupt (and handler)
2505 General Purpose Events (GPEs)
2508 FACS table (Waking vectors and Global Lock)
2510 Updated the unix tarball directory structure to match the ACPICA git
2512 tree. This ensures that the generic unix makefiles work properly (in
2513 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2516 Updated the return value of the _REV predefined method to integer value 5
2518 reflect ACPI 5.0 support.
2520 Moved the external ACPI PM timer interface prototypes to the public
2522 file where they belong.
2524 Example Code and Data Size: These are the sizes for the OS-independent
2525 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2527 version of the code includes the debug output trace mechanism and has a
2529 larger code and data size.
2532 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2533 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2535 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2536 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2539 2) iASL Compiler/Disassembler and Tools:
2541 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2542 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2543 incorrectly displayed.
2545 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2548 ----------------------------------------
2549 11 January 2012. Summary of changes for version 20120111:
2552 1) ACPICA Core Subsystem:
2554 Implemented a new mechanism to allow host device drivers to check for
2556 range conflicts with ACPI Operation Regions. Both SystemMemory and
2558 address spaces are supported. A new external interface,
2559 AcpiCheckAddressRange,
2560 allows drivers to check an address range against the ACPI namespace. See
2562 ACPICA reference for additional details. Adds one new file,
2563 utilities/utaddress.c. Lin Ming, Bob Moore.
2565 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2568 Status registers, update the ACPI 5.0 flags, and update internal data
2569 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2573 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2575 all module headers and signons, including the standard Linux header. This
2576 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2578 all ACPICA utilities.
2580 Example Code and Data Size: These are the sizes for the OS-independent
2581 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2583 version of the code includes the debug output trace mechanism and has a
2585 larger code and data size.
2588 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2589 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2591 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2592 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2595 2) iASL Compiler/Disassembler and Tools:
2597 Disassembler: fixed a problem with the automatic resource tag generation
2598 support. Fixes a problem where the resource tags are inadvertently not
2599 constructed if the table being disassembled contains external references
2601 control methods. Moved the actual construction of the tags to after the
2603 namespace is constructed (after 2nd parse is invoked due to external
2605 method references.) ACPICA BZ 941.
2607 Table Compiler: Make all "generic" operators caseless. These are the
2609 like UINT8, String, etc. Making these caseless improves ease-of-use.
2613 ----------------------------------------
2614 23 November 2011. Summary of changes for version 20111123:
2616 0) ACPI 5.0 Support:
2618 This release contains full support for the ACPI 5.0 specification, as
2621 Reduced Hardware Support:
2622 -------------------------
2624 This support allows for ACPI systems without the usual ACPI hardware.
2626 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2628 not attempt to initialize or use any of the usual ACPI hardware. Note,
2630 this flag is set, all of the following ACPI hardware is assumed to be not
2631 present and is not initialized or accessed:
2633 General Purpose Events (GPEs)
2634 Fixed Events (PM1a/PM1b and PM Control)
2635 Power Management Timer and Console Buttons (power/sleep)
2636 Real-time Clock Alarm
2638 System Control Interrupt (SCI)
2639 The FACS is assumed to be non-existent
2644 All new tables and updates to existing tables are fully supported in the
2645 ACPICA headers (for use by device drivers), the disassembler, and the
2647 Data Table Compiler. ACPI 5.0 defines these new tables:
2649 BGRT /* Boot Graphics Resource Table */
2650 DRTM /* Dynamic Root of Trust for Measurement table */
2651 FPDT /* Firmware Performance Data Table */
2652 GTDT /* Generic Timer Description Table */
2653 MPST /* Memory Power State Table */
2654 PCCT /* Platform Communications Channel Table */
2655 PMTT /* Platform Memory Topology Table */
2656 RASF /* RAS Feature table */
2658 Operation Regions/SpaceIDs:
2659 ---------------------------
2661 All new operation regions are fully supported by the iASL compiler, the
2662 disassembler, and the ACPICA runtime code (for dispatch to region
2664 The new operation region Space IDs are:
2669 Resource Descriptors:
2670 ---------------------
2672 All new ASL resource descriptors are fully supported by the iASL
2675 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2677 all new predefined resource tags). New descriptors are:
2686 ASL/AML Operators, New and Modified:
2687 ------------------------------------
2689 One new operator is added, the Connection operator, which is used to
2691 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2693 field objects within an operation region. Several new protocols are
2695 with the AccessAs operator. All are fully supported by the iASL compiler,
2696 disassembler, and runtime ACPICA AML interpreter:
2698 Connection // Declare Field Connection
2700 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2701 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2703 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2704 RawDataBuffer // Data type for Vendor Data
2707 Predefined ASL/AML Objects:
2708 ---------------------------
2710 All new predefined objects/control-methods are supported by the iASL
2712 and the ACPICA runtime validation/repair (arguments and return values.)
2714 predefined names include the following:
2716 Standard Predefined Names (Objects or Control Methods):
2717 _AEI, _CLS, _CPC, _CWS, _DEP,
2718 _DLM, _EVT, _GCP, _CRT, _GWS,
2719 _HRV, _PRE, _PSE, _SRT, _SUB.
2721 Resource Tags (Names used to access individual fields within resource
2723 _DBT, _DPL, _DRS, _END, _FLC,
2724 _IOR, _LIN, _MOD, _PAR, _PHA,
2725 _PIN, _PPI, _POL, _RXL, _SLV,
2726 _SPE, _STB, _TXL, _VEN.
2728 ACPICA External Interfaces:
2729 ---------------------------
2731 Several new interfaces have been defined for use by ACPI-related device
2732 drivers and other host OS services:
2734 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
2736 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
2737 provided by the BIOS. They are intended to be used in conjunction with
2739 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
2740 mutual exclusion with the AML code/interpreter.
2742 AcpiGetEventResources: Returns the (formatted) resource descriptors as
2744 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
2746 resource descriptors associated with hardware-reduced platform events,
2748 to the AcpiGetCurrentResources interface.
2750 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
2751 operation regions, information about the Connection() object and any
2753 length information is passed to the region handler within the Context
2756 AcpiBufferToResource: This interface converts a raw AML buffer containing
2758 resource template or resource descriptor to the ACPI_RESOURCE internal
2760 suitable for use by device drivers. Can be used by an operation region
2762 to convert the Connection() buffer object into a ACPI_RESOURCE.
2764 Miscellaneous/Tools/TestSuites:
2765 -------------------------------
2767 Support for extended _HID names (Four alpha characters instead of three).
2768 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
2769 Support for ACPI 5.0 features in the ASLTS test suite.
2770 Fully updated documentation (ACPICA and iASL reference documents.)
2772 ACPI Table Definition Language:
2773 -------------------------------
2775 Support for this language was implemented and released as a subsystem of
2777 iASL compiler in 2010. (See the iASL compiler User Guide.)
2780 Non-ACPI 5.0 changes for this release:
2781 --------------------------------------
2783 1) ACPICA Core Subsystem:
2785 Fix a problem with operation region declarations where a failure can
2788 the region name and an argument that evaluates to an object (such as the
2789 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
2792 Do not abort an ACPI table load if an invalid space ID is found within.
2794 will be caught later if the offending method is executed. ACPICA BZ 925.
2796 Fixed an issue with the FFixedHW space ID where the ID was not always
2797 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
2799 Fixed a problem with the 32-bit generation of the unix-specific OSL
2800 (osunixxf.c). Lin Ming, ACPICA BZ 936.
2802 Several changes made to enable generation with the GCC 4.6 compiler.
2806 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
2808 field registers out-of-range.
2810 2) iASL Compiler/Disassembler and Tools:
2812 iASL: Implemented the __PATH__ operator, which returns the full pathname
2814 the current source file.
2816 AcpiHelp: Automatically display expanded keyword information for all ASL
2819 Debugger: Add "Template" command to disassemble/dump resource template
2822 Added a new master script to generate and execute the ASLTS test suite.
2823 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
2825 iASL: Fix problem with listing generation during processing of the
2827 operator where AML listing was disabled until the entire Switch block was
2830 iASL: Improve support for semicolon statement terminators. Fix "invalid
2831 character" message for some cases when the semicolon is used. Semicolons
2833 now allowed after every <Term> grammar element. ACPICA BZ 927.
2835 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
2838 Disassembler: Fix problem with disassembly of the DataTableRegion
2840 where an inadvertent "Unhandled deferred opcode" message could be
2843 3) Example Code and Data Size
2845 These are the sizes for the OS-independent acpica.lib produced by the
2846 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2847 includes the debug output trace mechanism and has a much larger code and
2852 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2853 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2855 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2856 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2858 ----------------------------------------
2859 22 September 2011. Summary of changes for version 20110922:
2863 Support for ACPI 5.0 in ACPICA has been underway for several months and
2865 be released at the same time that ACPI 5.0 is officially released.
2867 The ACPI 5.0 specification is on track for release in the next few
2870 1) ACPICA Core Subsystem:
2872 Fixed a problem where the maximum sleep time for the Sleep() operator was
2873 intended to be limited to two seconds, but was inadvertently limited to
2877 Linux and Unix makefiles: Added header file dependencies to ensure
2879 generation of ACPICA core code and utilities. Also simplified the
2881 considerably through the use of the vpath variable to specify search
2885 2) iASL Compiler/Disassembler and Tools:
2887 iASL: Implemented support to check the access length for all fields
2889 access named Resource Descriptor fields. For example, if a resource field
2891 defined to be two bits, a warning is issued if a CreateXxxxField() is
2893 with an incorrect bit length. This is implemented for all current
2895 descriptor names. ACPICA BZ 930.
2897 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
2901 iASL: Fixed a couple of issues associated with variable-length package
2902 objects. 1) properly handle constants like One, Ones, Zero -- do not make
2904 VAR_PACKAGE when these are used as a package length. 2) Allow the
2906 opcode (in addition to PACKAGE) when validating object types for
2910 iASL: Emit statistics for all output files (instead of just the ASL input
2912 AML output). Includes listings, hex files, etc.
2914 iASL: Added -G option to the table compiler to allow the compilation of
2916 ACPI tables. The only part of a table that is required is the standard
2921 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
2923 which also adds correct 64-bit support. Also, now all output filenames
2925 completely lower case.
2927 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
2928 loading table files. A warning is issued for any such tables. The only
2929 exception is an FADT. This also fixes a possible fault when attempting to
2931 non-AML tables. ACPICA BZ 932.
2933 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
2935 missing table terminator could cause a fault when using the -p option.
2937 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
2940 3) Example Code and Data Size
2942 These are the sizes for the OS-independent acpica.lib produced by the
2943 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2944 includes the debug output trace mechanism and has a much larger code and
2948 Previous Release (VC 9.0):
2949 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2950 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2951 Current Release (VC 9.0):
2952 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2953 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2956 ----------------------------------------
2957 23 June 2011. Summary of changes for version 20110623:
2959 1) ACPI CA Core Subsystem:
2961 Updated the predefined name repair mechanism to not attempt repair of a
2963 return object if a _PSS object is present. We can only sort the _TSS
2965 package if there is no _PSS within the same scope. This is because if
2968 present, the ACPI specification dictates that the _TSS Power Dissipation
2970 is to be ignored, and therefore some BIOSs leave garbage values in the
2972 Power field(s). In this case, it is best to just return the _TSS package
2974 is. Reported by, and fixed with assistance from Fenghua Yu.
2976 Added an option to globally disable the control method return value
2978 and repair. This runtime option can be used to disable return value
2981 this is causing a problem on a particular machine. Also added an option
2983 AcpiExec (-dr) to set this disable flag.
2985 All makefiles and project files: Major changes to improve generation of
2987 tools. ACPICA BZ 912:
2988 Reduce default optimization levels to improve compatibility
2989 For Linux, add strict-aliasing=0 for gcc 4
2990 Cleanup and simplify use of command line defines
2991 Cleanup multithread library support
2992 Improve usage messages
2994 Linux-specific header: update handling of THREAD_ID and pthread. For the
2996 bit case, improve casting to eliminate possible warnings, especially with
3000 Example Code and Data Size: These are the sizes for the OS-independent
3001 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3003 version of the code includes the debug output trace mechanism and has a
3005 larger code and data size.
3007 Previous Release (VC 9.0):
3008 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3009 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3010 Current Release (VC 9.0):
3011 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3012 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3014 2) iASL Compiler/Disassembler and Tools:
3016 With this release, a new utility named "acpihelp" has been added to the
3018 package. This utility summarizes the ACPI specification chapters for the
3020 and AML languages. It generates under Linux/Unix as well as Windows, and
3021 provides the following functionality:
3022 Find/display ASL operator(s) -- with description and syntax.
3023 Find/display ASL keyword(s) -- with exact spelling and descriptions.
3024 Find/display ACPI predefined name(s) -- with description, number
3025 of arguments, and the return value data type.
3026 Find/display AML opcode name(s) -- with opcode, arguments, and
3028 Decode/display AML opcode -- with opcode name, arguments, and
3031 Service Layers: Make multi-thread support configurable. Conditionally
3033 the multi-thread support so that threading libraries will not be linked
3036 necessary. The only tool that requires multi-thread support is AcpiExec.
3038 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
3040 Bison appear to want the interface to yyerror to be a const char * (or at
3041 least this is a problem when generating iASL on some systems.) ACPICA BZ
3045 Tools: Fix for systems where O_BINARY is not defined. Only used for
3047 versions of the tools.
3049 ----------------------------------------
3050 27 May 2011. Summary of changes for version 20110527:
3052 1) ACPI CA Core Subsystem:
3054 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
3056 signature. Now, only allow SSDT, OEMx, and a null signature. History:
3057 1) Originally, we checked the table signature for "SSDT" or "PSDT".
3058 (PSDT is now obsolete.)
3059 2) We added support for OEMx tables, signature "OEM" plus a fourth
3060 "don't care" character.
3061 3) Valid tables were encountered with a null signature, so we just
3062 gave up on validating the signature, (05/2008).
3063 4) We encountered non-AML tables such as the MADT, which caused
3064 interpreter errors and kernel faults. So now, we once again allow
3065 only SSDT, OEMx, and now, also a null signature. (05/2011).
3067 Added the missing _TDL predefined name to the global name list in order
3069 enable validation. Affects both the core ACPICA code and the iASL
3072 Example Code and Data Size: These are the sizes for the OS-independent
3073 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3075 version of the code includes the debug output trace mechanism and has a
3077 larger code and data size.
3079 Previous Release (VC 9.0):
3080 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3081 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3082 Current Release (VC 9.0):
3083 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3084 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3086 2) iASL Compiler/Disassembler and Tools:
3088 Debugger/AcpiExec: Implemented support for "complex" method arguments on
3090 debugger command line. This adds support beyond simple integers --
3092 Strings, Buffers, and Packages. Includes support for nested packages.
3093 Increased the default command line buffer size to accommodate these
3095 See the ACPICA reference for details and syntax. ACPICA BZ 917.
3097 Debugger/AcpiExec: Implemented support for "default" method arguments for
3099 Execute/Debug command. Now, the debugger will always invoke a control
3101 with the required number of arguments -- even if the command line
3103 none or insufficient arguments. It uses default integer values for any
3105 arguments. Also fixes a bug where only six method arguments maximum were
3106 supported instead of the required seven.
3108 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
3110 also return status in order to prevent buffer overruns. See the ACPICA
3111 reference for details and syntax. ACPICA BZ 921
3113 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
3114 makefiles to simplify support for the two different but similar parser
3115 generators, bison and yacc.
3117 Updated the generic unix makefile for gcc 4. The default gcc version is
3119 expected to be 4 or greater, since options specific to gcc 4 are used.
3121 ----------------------------------------
3122 13 April 2011. Summary of changes for version 20110413:
3124 1) ACPI CA Core Subsystem:
3126 Implemented support to execute a so-called "orphan" _REG method under the
3128 device. This change will force the execution of a _REG method underneath
3131 device even if there is no corresponding operation region of type
3132 EmbeddedControl. Fixes a problem seen on some machines and apparently is
3133 compatible with Windows behavior. ACPICA BZ 875.
3135 Added more predefined methods that are eligible for automatic NULL
3137 element removal. This change adds another group of predefined names to
3140 of names that can be repaired by having NULL package elements dynamically
3141 removed. This group are those methods that return a single variable-
3143 package containing simple data types such as integers, buffers, strings.
3145 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
3148 and _TZD. ACPICA BZ 914.
3150 Split and segregated all internal global lock functions to a new file,
3153 Updated internal address SpaceID for DataTable regions. Moved this
3156 id in preparation for ACPI 5.0 changes that will include some new space
3159 change should not affect user/host code.
3161 Example Code and Data Size: These are the sizes for the OS-independent
3163 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3165 the code includes the debug output trace mechanism and has a much larger
3170 Previous Release (VC 9.0):
3171 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3172 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3173 Current Release (VC 9.0):
3174 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3175 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3177 2) iASL Compiler/Disassembler and Tools:
3179 iASL/DTC: Major update for new grammar features. Allow generic data types
3181 custom ACPI tables. Field names are now optional. Any line can be split
3183 multiple lines using the continuation char (\). Large buffers now use
3185 continuation character(s) and no colon on the continuation lines. See the
3187 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
3190 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
3192 Since the parser stuffs a "zero" as the return value for these statements
3195 the underlying AML grammar), they were seen as "return with value" by the
3197 semantic checking. They are now seen correctly as "null" return
3200 iASL: Check if a_REG declaration has a corresponding Operation Region.
3202 check for each _REG to ensure that there is in fact a corresponding
3204 region declaration in the same scope. If not, the _REG method is not very
3206 since it probably won't be executed. ACPICA BZ 915.
3208 iASL/DTC: Finish support for expression evaluation. Added a new
3211 that implements c-style operator precedence and parenthesization. ACPICA
3215 Disassembler/DTC: Remove support for () and <> style comments in data
3218 that DTC has full expression support, we don't want to have comment
3221 start with a parentheses or a less-than symbol. Now, only the standard /*
3224 comments are supported, as well as the bracket [] comments.
3226 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
3228 headers in the acpidump file. Update the header validation to support
3230 tables. Problem introduced in previous AcpiXtract version in the change
3232 support "wrong checksum" error messages emitted by acpidump utility.
3234 iASL: Add a * option to generate all template files (as a synonym for
3238 "iasl -T *" or "iasl -T ALL".
3240 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
3242 abort the compiler on "fatal" errors, simply should abort the current
3244 This allows multiple compiles with a single (possibly wildcard) compiler
3247 ----------------------------------------
3248 16 March 2011. Summary of changes for version 20110316:
3250 1) ACPI CA Core Subsystem:
3252 Fixed a problem caused by a _PRW method appearing at the namespace root
3254 during the setup of wake GPEs. A fault could occur if a _PRW directly
3257 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3259 Implemented support for "spurious" Global Lock interrupts. On some
3261 global lock interrupt can occur without the pending flag being set. Upon
3264 interrupt, we now ensure that a thread is actually waiting for the lock
3266 signaling GL availability. Rafael Wysocki, Bob Moore.
3268 Example Code and Data Size: These are the sizes for the OS-independent
3270 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3272 the code includes the debug output trace mechanism and has a much larger
3277 Previous Release (VC 9.0):
3278 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3279 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3280 Current Release (VC 9.0):
3281 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3282 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3284 2) iASL Compiler/Disassembler and Tools:
3286 Implemented full support for the "SLIC" ACPI table. Includes support in
3288 header files, disassembler, table compiler, and template generator. Bob
3292 AcpiXtract: Correctly handle embedded comments and messages from
3294 Apparently some or all versions of acpidump will occasionally emit a
3297 "Wrong checksum", etc., into the dump file. This was causing problems for
3298 AcpiXtract. ACPICA BZ 905.
3300 iASL: Fix the Linux makefile by removing an inadvertent double file
3304 AcpiExec: Update installation of operation region handlers. Install one
3306 for a user-defined address space. This is used by the ASL test suite
3309 ----------------------------------------
3310 11 February 2011. Summary of changes for version 20110211:
3312 1) ACPI CA Core Subsystem:
3314 Added a mechanism to defer _REG methods for some early-installed
3316 Most user handlers should be installed before call to
3317 AcpiEnableSubsystem.
3318 However, Event handlers and region handlers should be installed after
3319 AcpiInitializeObjects. Override handlers for the "default" regions should
3321 installed early, however. This change executes all _REG methods for the
3322 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3323 chicken/egg issues between them. ACPICA BZ 848.
3325 Implemented an optimization for GPE detection. This optimization will
3327 ignore GPE registers that contain no enabled GPEs -- there is no need to
3328 read the register since this information is available internally. This
3329 becomes more important on machines with a large GPE space. ACPICA
3331 884. Lin Ming. Suggestion from Joe Liu.
3333 Removed all use of the highly unreliable FADT revision field. The
3335 number in the FADT has been found to be completely unreliable and cannot
3337 trusted. Only the actual table length can be used to infer the version.
3339 change updates the ACPICA core and the disassembler so that both no
3341 even look at the FADT version and instead depend solely upon the FADT
3344 Fix an unresolved name issue for the no-debug and no-error-message source
3345 generation cases. The _AcpiModuleName was left undefined in these cases,
3347 it is actually needed as a parameter to some interfaces. Define
3348 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3350 Split several large files (makefiles and project files updated)
3351 utglobal.c -> utdecode.c
3352 dbcomds.c -> dbmethod.c dbnames.c
3353 dsopcode.c -> dsargs.c dscontrol.c
3354 dsload.c -> dsload2.c
3355 aslanalyze.c -> aslbtypes.c aslwalks.c
3357 Example Code and Data Size: These are the sizes for the OS-independent
3358 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3359 debug version of the code includes the debug output trace mechanism and
3361 a much larger code and data size.
3363 Previous Release (VC 9.0):
3364 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3365 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3366 Current Release (VC 9.0):
3367 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3368 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3370 2) iASL Compiler/Disassembler and Tools:
3372 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3373 These are useful C-style macros with the standard definitions. ACPICA
3376 iASL/DTC: Added support for integer expressions and labels. Support for
3378 expressions for all integer fields in all ACPI tables. Support for labels
3380 "generic" portions of tables such as UEFI. See the iASL reference manual.
3382 Debugger: Added a command to display the status of global handlers. The
3383 "handlers" command will display op region, fixed event, and miscellaneous
3384 global handlers. installation status -- and for op regions, whether
3386 or user-installed handler will be used.
3388 iASL: Warn if reserved method incorrectly returns a value. Many
3390 names are defined such that they do not return a value. If implemented as
3392 method, issue a warning if such a name explicitly returns a value. ACPICA
3395 iASL: Added detection of GPE method name conflicts. Detects a conflict
3397 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3399 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3401 iASL/DTC: Fixed a couple input scanner issues with comments and line
3402 numbers. Comment remover could get confused and miss a comment ending.
3404 a problem with line counter maintenance.
3406 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3408 no need to abort on simple errors within a field definition.
3410 Debugger: Simplified the output of the help command. All help output now
3412 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3414 ----------------------------------------
3415 12 January 2011. Summary of changes for version 20110112:
3417 1) ACPI CA Core Subsystem:
3419 Fixed a race condition between method execution and namespace walks that
3421 possibly cause a fault. The problem was apparently introduced in version
3422 20100528 as a result of a performance optimization that reduces the
3425 namespace walks upon method exit by using the delete_namespace_subtree
3426 function instead of the delete_namespace_by_owner function used
3428 Bug is a missing namespace lock in the delete_namespace_subtree function.
3429 dana.myers@oracle.com
3431 Fixed several issues and a possible fault with the automatic "serialized"
3432 method support. History: This support changes a method to "serialized" on
3434 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3435 possibility that it cannot handle reentrancy. This fix repairs a couple
3437 issues seen in the field, especially on machines with many cores:
3439 1) Delete method children only upon the exit of the last thread,
3440 so as to not delete objects out from under other running threads
3441 (and possibly causing a fault.)
3442 2) Set the "serialized" bit for the method only upon the exit of the
3443 Last thread, so as to not cause deadlock when running threads
3445 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3446 so that there is no longer any confusion between the two.
3448 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3450 Debugger: Now lock the namespace for duration of a namespace dump.
3452 issues if the namespace is changing dynamically underneath the debugger.
3453 Especially affects temporary namespace nodes, since the debugger displays
3456 Updated the ordering of include files. The ACPICA headers should appear
3457 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3459 any necessary compiler-specific defines, etc. Affects the ACPI-related
3463 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3465 to all module headers and signons, including the Linux header. This
3467 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3470 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3471 project files for VC++ 6.0 are now obsolete. New project files can be
3473 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3476 Example Code and Data Size: These are the sizes for the OS-independent
3477 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3478 debug version of the code includes the debug output trace mechanism and
3480 much larger code and data size.
3482 Previous Release (VC 6.0):
3483 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3484 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3485 Current Release (VC 9.0):
3486 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3487 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3489 2) iASL Compiler/Disassembler and Tools:
3491 iASL: Added generic data types to the Data Table compiler. Add "generic"
3493 types such as UINT32, String, Unicode, etc., to simplify the generation
3495 platform-defined tables such as UEFI. Lin Ming.
3497 iASL: Added listing support for the Data Table Compiler. Adds listing
3499 (-l) to display actual binary output for each line of input code.
3501 ----------------------------------------
3502 09 December 2010. Summary of changes for version 20101209:
3504 1) ACPI CA Core Subsystem:
3506 Completed the major overhaul of the GPE support code that was begun in
3508 2010. Major features include: removal of _PRW execution in ACPICA (host
3509 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3510 changes to existing interfaces, simplification of GPE handler operation,
3512 a handful of new interfaces:
3518 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3520 See the ACPICA Programmer Reference for full details and programming
3521 information. See the new section 4.4 "General Purpose Event (GPE)
3523 for a full overview, and section 8.7 "ACPI General Purpose Event
3525 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3527 Bob Moore, Rafael Wysocki.
3529 Implemented a new GPE feature for Windows compatibility, the "Implicit
3531 GPE Notify". This feature will automatically issue a Notify(2) on a
3533 when a Wake GPE is received if there is no corresponding GPE method or
3534 handler. ACPICA BZ 870.
3536 Fixed a problem with the Scope() operator during table parse and load
3538 During load phase (table load or method execution), the scope operator
3540 not enter the target into the namespace. Instead, it should open a new
3542 at the target location. Linux BZ 19462, ACPICA BZ 882.
3544 Example Code and Data Size: These are the sizes for the OS-independent
3545 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3546 debug version of the code includes the debug output trace mechanism and
3548 much larger code and data size.
3551 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3552 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3554 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3555 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3557 2) iASL Compiler/Disassembler and Tools:
3559 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3561 "bus-specific" per the ACPI specification, and therefore any characters
3563 acceptable. The only checks that can be performed are for a null string
3565 perhaps for a leading asterisk. ACPICA BZ 886.
3567 iASL: Fixed a problem where a syntax error that caused a premature EOF
3568 condition on the source file emitted a very confusing error message. The
3569 premature EOF is now detected correctly. ACPICA BZ 891.
3571 Disassembler: Decode the AccessSize within a Generic Address Structure
3573 access, word access, etc.) Note, this field does not allow arbitrary bit
3574 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3576 New: AcpiNames utility - Example namespace dump utility. Shows an example
3578 ACPICA configuration for a minimal namespace dump utility. Uses table and
3579 namespace managers, but no AML interpreter. Does not add any
3581 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3582 partition and configure ACPICA. ACPICA BZ 883.
3584 AML Debugger: Increased the debugger buffer size for method return
3586 Was 4K, increased to 16K. Also enhanced error messages for debugger
3588 execution, including the buffer overflow case.
3590 ----------------------------------------
3591 13 October 2010. Summary of changes for version 20101013:
3593 1) ACPI CA Core Subsystem:
3595 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3597 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3598 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3600 Changed the type of the predefined namespace object _TZ from ThermalZone
3602 Device. This was found to be confusing to the host software that
3604 the various thermal zones, since _TZ is not really a ThermalZone.
3607 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3610 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3611 string is "Windows 2006 SP2".
3613 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3615 code automatically repairs _HID-related strings, this type of code is no
3616 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3619 Example Code and Data Size: These are the sizes for the OS-independent
3620 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3621 debug version of the code includes the debug output trace mechanism and
3623 much larger code and data size.
3626 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3627 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3629 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3630 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3632 2) iASL Compiler/Disassembler and Tools:
3634 iASL: Implemented additional compile-time validation for _HID strings.
3636 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3639 the string must be exactly seven or eight characters. For both _HID and
3641 strings, all characters must be alphanumeric. ACPICA BZ 874.
3643 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3644 descriptors that are mostly or all zeros, with the expectation that they
3646 be filled in at runtime. iASL now allows this as long as there is a
3648 tag" (name) associated with the descriptor, which gives the ASL a handle
3649 needed to modify the descriptor. ACPICA BZ 873.
3651 Added single-thread support to the generic Unix application OSL.
3653 for iASL support, this change removes the use of semaphores in the
3655 threaded ACPICA tools/applications - increasing performance. The
3656 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3657 option. ACPICA BZ 879.
3659 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3661 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3663 iASL: Moved all compiler messages to a new file, aslmessages.h.
3665 ----------------------------------------
3666 15 September 2010. Summary of changes for version 20100915:
3668 1) ACPI CA Core Subsystem:
3670 Removed the AcpiOsDerivePciId OSL interface. The various host
3672 of this function were not OS-dependent and are now obsolete and can be
3673 removed from all host OSLs. This function has been replaced by
3674 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3675 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3676 module, hwpci.c. ACPICA BZ 857.
3678 Implemented a dynamic repair for _HID and _CID strings. The following
3679 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3680 string, and 2) the entire string is uppercased. Both repairs are in
3681 accordance with the ACPI specification and will simplify host driver
3685 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3686 always UINT64. This simplifies the ACPICA code, especially any printf
3688 UINT64 is the only common data type for all thread_id types across all
3689 operating systems. It is now up to the host OSL to cast the native
3691 type to UINT64 before returning the value to ACPICA (via
3693 Lin Ming, Bob Moore.
3695 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3697 keyword is not standard across compilers, and this type allows inline to
3699 configured on a per-compiler basis. Lin Ming.
3701 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3703 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3705 during suspend/restore operations. ACPICA BZ 869.
3707 All code that implements error/warning messages with the "ACPI:" prefix
3709 been moved to a new module, utxferror.c.
3711 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
3713 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
3715 Example Code and Data Size: These are the sizes for the OS-independent
3716 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3717 debug version of the code includes the debug output trace mechanism and
3719 much larger code and data size.
3722 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3723 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3725 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3726 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3728 2) iASL Compiler/Disassembler and Tools:
3730 iASL/Disassembler: Write ACPI errors to stderr instead of the output
3732 This keeps the output files free of random error messages that may
3734 from within the namespace/interpreter code. Used this opportunity to
3736 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
3737 866. Lin Ming, Bob Moore.
3739 Tools: update some printfs for ansi warnings on size_t. Handle width
3741 of size_t on 32-bit versus 64-bit generations. Lin Ming.
3743 ----------------------------------------
3744 06 August 2010. Summary of changes for version 20100806:
3746 1) ACPI CA Core Subsystem:
3748 Designed and implemented a new host interface to the _OSI support code.
3750 will allow the host to dynamically add or remove multiple _OSI strings,
3752 well as install an optional handler that is called for each _OSI
3754 Also added a new AML debugger command, 'osi' to display and modify the
3756 _OSI string table, and test support in the AcpiExec utility. See the
3758 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
3760 AcpiInstallInterface - Add an _OSI string.
3761 AcpiRemoveInterface - Delete an _OSI string.
3762 AcpiInstallInterfaceHandler - Install optional _OSI handler.
3764 AcpiOsValidateInterface - no longer used.
3766 source/components/utilities/utosi.c
3768 Re-introduced the support to enable multi-byte transfers for Embedded
3769 Controller (EC) operation regions. A reported problem was found to be a
3771 in the host OS, not in the multi-byte support. Previously, the maximum
3773 size passed to the EC operation region handler was a single byte. There
3775 often EC Fields larger than one byte that need to be transferred, and it
3777 useful for the EC driver to lock these as a single transaction. This
3779 enables single transfers larger than 8 bits. This effectively changes the
3780 access to the EC space from ByteAcc to AnyAcc, and will probably require
3781 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
3783 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
3785 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
3786 prototype in acpiosxf.h had the output value pointer as a (void *).
3787 It should be a (UINT64 *). This may affect some host OSL code.
3789 Fixed a couple problems with the recently modified Linux makefiles for
3791 and AcpiExec. These new makefiles place the generated object files in the
3792 local directory so that there can be no collisions between the files that
3794 shared between them that are compiled with different options.
3796 Example Code and Data Size: These are the sizes for the OS-independent
3797 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3798 debug version of the code includes the debug output trace mechanism and
3800 much larger code and data size.
3803 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3804 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3806 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3807 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3809 2) iASL Compiler/Disassembler and Tools:
3811 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
3813 namespace from and disassemble an entire group of AML files. Useful for
3814 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
3816 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
3818 iASL: Allow multiple invocations of -e option. This change allows
3820 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
3824 ----------------------------------------
3825 02 July 2010. Summary of changes for version 20100702:
3827 1) ACPI CA Core Subsystem:
3829 Implemented several updates to the recently added GPE reference count
3830 support. The model for "wake" GPEs is changing to give the host OS
3832 control of these GPEs. Eventually, the ACPICA core will not execute any
3834 methods, since the host already must execute them. Also, additional
3836 were made to help ensure that the reference counts are kept in proper
3837 synchronization with reality. Rafael J. Wysocki.
3839 1) Ensure that GPEs are not enabled twice during initialization.
3840 2) Ensure that GPE enable masks stay in sync with the reference count.
3841 3) Do not inadvertently enable GPEs when writing GPE registers.
3842 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
3843 interface. This interface will set or clear individual GPEs for wakeup.
3844 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
3846 are now used for "runtime" GPEs only.
3848 Changed the behavior of the GPE install/remove handler interfaces. The
3851 no longer disabled during this process, as it was found to cause problems
3853 some machines. Rafael J. Wysocki.
3855 Reverted a change introduced in version 20100528 to enable Embedded
3856 Controller multi-byte transfers. This change was found to cause problems
3858 Index Fields and possibly Bank Fields. It will be reintroduced when these
3859 problems have been resolved.
3861 Fixed a problem with references to Alias objects within Package Objects.
3863 reference to an Alias within the definition of a Package was not always
3864 resolved properly. Aliases to objects like Processors, Thermal zones,
3866 were resolved to the actual object instead of a reference to the object
3869 should be. Package objects are only allowed to contain integer, string,
3870 buffer, package, and reference objects. Redhat bugzilla 608648.
3872 Example Code and Data Size: These are the sizes for the OS-independent
3873 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3874 debug version of the code includes the debug output trace mechanism and
3876 much larger code and data size.
3879 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3880 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3882 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3883 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3885 2) iASL Compiler/Disassembler and Tools:
3887 iASL: Implemented a new compiler subsystem to allow definition and
3888 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
3890 are called "ACPI Data Tables", and the new compiler is the "Data Table
3891 Compiler". This compiler is intended to simplify the existing error-prone
3892 process of creating these tables for the BIOS, as well as allowing the
3893 disassembly, modification, recompilation, and override of existing ACPI
3895 tables. See the iASL User Guide for detailed information.
3897 iASL: Implemented a new Template Generator option in support of the new
3899 Table Compiler. This option will create examples of all known ACPI tables
3900 that can be used as the basis for table development. See the iASL
3901 documentation and the -T option.
3903 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
3906 Updated the Linux makefiles for iASL and AcpiExec to place the generated
3907 object files in the local directory so that there can be no collisions
3908 between the shared files between them that are generated with different
3911 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
3913 the #define __APPLE__ to enable this support.
3915 ----------------------------------------
3916 28 May 2010. Summary of changes for version 20100528:
3918 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
3919 available at www.acpi.info. This is primarily an errata release.
3921 1) ACPI CA Core Subsystem:
3923 Undefined ACPI tables: We are looking for the definitions for the
3925 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
3927 Implemented support to enable multi-byte transfers for Embedded
3929 (EC) operation regions. Previously, the maximum data size passed to the
3931 operation region handler was a single byte. There are often EC Fields
3933 than one byte that need to be transferred, and it is useful for the EC
3935 to lock these as a single transaction. This change enables single
3937 larger than 8 bits. This effectively changes the access to the EC space
3939 ByteAcc to AnyAcc, and will probably require changes to the host OS
3941 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
3943 transfers. Alexey Starikovskiy, Lin Ming
3945 Implemented a performance enhancement for namespace search and access.
3947 change enhances the performance of namespace searches and walks by adding
3949 backpointer to the parent in each namespace node. On large namespaces,
3951 change can improve overall ACPI performance by up to 9X. Adding a pointer
3953 each namespace node increases the overall size of the internal namespace
3955 about 5%, since each namespace entry usually consists of both a namespace
3956 node and an ACPI operand object. However, this is the first growth of the
3957 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
3959 Implemented a performance optimization that reduces the number of
3961 walks. On control method exit, only walk the namespace if the method is
3963 to have created namespace objects outside of its local scope. Previously,
3965 entire namespace was traversed on each control method exit. This change
3967 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
3970 Added support to truncate I/O addresses to 16 bits for Windows
3972 Some ASL code has been seen in the field that inadvertently has bits set
3973 above bit 15. This feature is optional and is enabled if the BIOS
3975 any Windows OSI strings. It can also be enabled by the host OS. Matthew
3978 Added support to limit the maximum time for the ASL Sleep() operator. To
3979 prevent accidental deep sleeps, limit the maximum time that Sleep() will
3980 actually sleep. Configurable, the default maximum is two seconds. ACPICA
3983 Added run-time validation support for the _WDG and_WED Microsoft
3985 methods. These objects are defined by "Windows Instrumentation", and are
3987 part of the ACPI spec. ACPICA BZ 860.
3989 Expanded all statistic counters used during namespace and device
3990 initialization from 16 to 32 bits in order to support very large
3993 Replaced all instances of %d in printf format specifiers with %u since
3995 all integers in ACPICA are unsigned.
3997 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
4001 Example Code and Data Size: These are the sizes for the OS-independent
4002 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4003 debug version of the code includes the debug output trace mechanism and
4005 much larger code and data size.
4008 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4009 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4011 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4012 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4014 2) iASL Compiler/Disassembler and Tools:
4016 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
4017 methods. These objects are defined by "Windows Instrumentation", and are
4019 part of the ACPI spec. ACPICA BZ 860.
4021 AcpiExec: added option to disable the memory tracking mechanism. The -dt
4022 option will disable the tracking mechanism, which improves performance
4025 AcpiExec: Restructured the command line options into -d (disable) and -e
4028 ----------------------------------------
4029 28 April 2010. Summary of changes for version 20100428:
4031 1) ACPI CA Core Subsystem:
4033 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
4034 including FADT-based and GPE Block Devices, execute any _PRW methods in
4036 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
4037 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
4038 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
4039 Devices. Provides compatibility with other ACPI implementations. Two new
4040 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
4043 Fixed a regression introduced in version 20100331 within the table
4045 where initial table loading could fail. This was introduced in the fix
4047 AcpiReallocateRootTable. Also, renamed some of fields in the table
4049 data structures to clarify their meaning and use.
4051 Fixed a possible allocation overrun during internal object copy in
4052 AcpiUtCopySimpleObject. The original code did not correctly handle the
4054 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
4057 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
4058 possible access beyond end-of-allocation. Also, now fully validate
4060 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
4062 Example Code and Data Size: These are the sizes for the OS-independent
4063 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4064 debug version of the code includes the debug output trace mechanism and
4066 much larger code and data size.
4069 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4070 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4072 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4073 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4075 2) iASL Compiler/Disassembler and Tools:
4077 iASL: Implemented Min/Max/Len/Gran validation for address resource
4078 descriptors. This change implements validation for the address fields
4080 are common to all address-type resource descriptors. These checks are
4081 implemented: Checks for valid Min/Max, length within the Min/Max window,
4082 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
4084 table 6-40 in the ACPI 4.0a specification. Also split the large
4086 and aslrestype2.c files into five new files. ACPICA BZ 840.
4088 iASL: Added support for the _Wxx predefined names. This support was
4090 and these names were not recognized by the compiler as valid predefined
4091 names. ACPICA BZ 851.
4093 iASL: Added an error for all predefined names that are defined to return
4095 value and thus must be implemented as Control Methods. These include all
4097 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
4098 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
4100 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
4102 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
4104 dynamically loaded via the Load() operator. Also cleaned up output for
4107 ta and -tc options. ACPICA BZ 853.
4109 Tests: Added a new file with examples of extended iASL error checking.
4110 Demonstrates the advanced error checking ability of the iASL compiler.
4111 Available at tests/misc/badcode.asl.
4113 ----------------------------------------
4114 31 March 2010. Summary of changes for version 20100331:
4116 1) ACPI CA Core Subsystem:
4118 Completed a major update for the GPE support in order to improve support
4120 shared GPEs and to simplify both host OS and ACPICA code. Added a
4122 count mechanism to support shared GPEs that require multiple device
4124 Several external interfaces have changed. One external interface has been
4125 removed. One new external interface was added. Most of the GPE external
4126 interfaces now use the GPE spinlock instead of the events mutex (and the
4127 Flags parameter for many GPE interfaces has been removed.) See the
4129 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
4131 Wysocki. ACPICA BZ 831.
4134 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
4140 Implemented write support for DataTable operation regions. These regions
4142 defined via the DataTableRegion() operator. Previously, only read support
4144 implemented. The ACPI specification allows DataTableRegions to be
4148 Implemented a new subsystem option to force a copy of the DSDT to local
4149 memory. Optionally copy the entire DSDT to local memory (instead of
4151 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
4153 the original DSDT, creating the need for this option. Default is FALSE,
4157 Implemented detection of a corrupted or replaced DSDT. This change adds
4158 support to detect a DSDT that has been corrupted and/or replaced from
4160 the OS (by firmware). This is typically catastrophic for the system, but
4162 been seen on some machines. Once this problem has been detected, the DSDT
4163 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
4165 Fixed two problems with AcpiReallocateRootTable during the root table
4167 When copying the root table to the new allocation, the length used was
4168 incorrect. The new size was used instead of the current table size,
4170 too much data was copied. Also, the count of available slots for ACPI
4172 was not set correctly. Alexey Starikovskiy, Bob Moore.
4174 Example Code and Data Size: These are the sizes for the OS-independent
4175 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4176 debug version of the code includes the debug output trace mechanism and
4178 much larger code and data size.
4181 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4182 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4184 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4185 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4187 2) iASL Compiler/Disassembler and Tools:
4189 iASL: Implement limited typechecking for values returned from predefined
4190 control methods. The type of any returned static (unnamed) object is now
4191 validated. For example, Return(1). ACPICA BZ 786.
4193 iASL: Fixed a predefined name object verification regression. Fixes a
4195 introduced in version 20100304. An error is incorrectly generated if a
4196 predefined name is declared as a static named object with a value defined
4197 using the keywords "Zero", "One", or "Ones". Lin Ming.
4199 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
4201 reducing the requested registry access rights. ACPICA BZ 842.
4203 Disassembler: fixed a possible fault when generating External()
4205 Introduced in commit ae7d6fd: Properly handle externals with parent-
4207 (carat). Fixes a string length allocation calculation. Lin Ming.
4209 ----------------------------------------
4210 04 March 2010. Summary of changes for version 20100304:
4212 1) ACPI CA Core Subsystem:
4214 Fixed a possible problem with the AML Mutex handling function
4215 AcpiExReleaseMutex where the function could fault under the very rare
4216 condition when the interpreter has blocked, the interpreter lock is
4218 the interpreter is then reentered via the same thread, and attempts to
4219 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
4223 Implemented additional configuration support for the AML "Debug Object".
4224 Output from the debug object can now be enabled via a global variable,
4225 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
4227 This debug output is now available in the release version of ACPICA
4229 of just the debug version. Also, the entire debug output module can now
4231 configured out of the ACPICA build if desired. One new file added,
4232 executer/exdebug.c. Lin Ming, Bob Moore.
4234 Added header support for the ACPI MCHI table (Management Controller Host
4235 Interface Table). This table was added in ACPI 4.0, but the defining
4237 has only recently become available.
4239 Standardized output of integer values for ACPICA warnings/errors. Always
4241 0x prefix for hex output, always use %u for unsigned integer decimal
4243 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
4245 invocations.) These invocations were converted from the original
4246 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
4248 Example Code and Data Size: These are the sizes for the OS-independent
4249 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4250 debug version of the code includes the debug output trace mechanism and
4252 much larger code and data size.
4255 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4256 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4258 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4259 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4261 2) iASL Compiler/Disassembler and Tools:
4263 iASL: Implemented typechecking support for static (non-control method)
4264 predefined named objects that are declared with the Name() operator. For
4265 example, the type of this object is now validated to be of type Integer:
4266 Name(_BBN, 1). This change migrates the compiler to using the core
4268 name table instead of maintaining a local version. Added a new file,
4269 aslpredef.c. ACPICA BZ 832.
4271 Disassembler: Added support for the ACPI 4.0 MCHI table.
4273 ----------------------------------------
4274 21 January 2010. Summary of changes for version 20100121:
4276 1) ACPI CA Core Subsystem:
4278 Added the 2010 copyright to all module headers and signons. This affects
4279 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4280 tools/utilities, and the test suites.
4282 Implemented a change to the AcpiGetDevices interface to eliminate
4284 invocations of the _STA method. In the case where a specific _HID is
4285 requested, do not run _STA until a _HID match is found. This eliminates
4286 potentially dozens of _STA calls during a search for a particular
4288 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4290 Implemented an additional repair for predefined method return values.
4292 to repair unexpected NULL elements within returned Package objects.
4295 Integer of value zero, a NULL String, or a zero-length Buffer as
4297 ACPICA BZ 818. Lin Ming, Bob Moore.
4299 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4301 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4303 64-bit AML integers). It is now obsolete and this change removes it from
4305 ACPICA code base, replaced by UINT64. The original typedef has been
4307 for now for compatibility with existing device driver code. ACPICA BZ
4310 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4312 the parse tree object.
4314 Added additional warning options for the gcc-4 generation. Updated the
4316 accordingly. This includes some code restructuring to eliminate
4318 code, elimination of some gotos, elimination of unused return values,
4320 additional casting, and removal of redundant declarations.
4322 Example Code and Data Size: These are the sizes for the OS-independent
4323 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4324 debug version of the code includes the debug output trace mechanism and
4326 much larger code and data size.
4329 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4330 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4332 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4333 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4335 2) iASL Compiler/Disassembler and Tools:
4337 No functional changes for this release.
4339 ----------------------------------------
4340 14 December 2009. Summary of changes for version 20091214:
4342 1) ACPI CA Core Subsystem:
4344 Enhanced automatic data type conversions for predefined name repairs.
4346 change expands the automatic repairs/conversions for predefined name
4348 values to make Integers, Strings, and Buffers fully interchangeable.
4351 Buffer can be converted to a Package of Integers if necessary. The
4353 module was completely restructured. Lin Ming, Bob Moore.
4355 Implemented automatic removal of null package elements during predefined
4357 repairs. This change will automatically remove embedded and trailing NULL
4358 package elements from returned package objects that are defined to
4361 variable number of sub-packages. The driver is then presented with a
4363 with no null elements to deal with. ACPICA BZ 819.
4365 Implemented a repair for the predefined _FDE and _GTM names. The expected
4366 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4368 possible problems (both seen in the field), where a package of integers
4370 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4373 Implemented additional module-level code support. This change will
4375 execute module-level code that is not at the root of the namespace (under
4377 Device object, etc.). Now executes the code within the current scope
4379 of the root. ACPICA BZ 762. Lin Ming.
4381 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4383 problem where mutex errors can occur when running a _REG method that is
4385 the same scope as a method-defined operation region or an operation
4387 under a module-level IF block. This type of code is rare, so the problem
4389 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4391 Fixed a possible memory leak during module-level code execution. An
4393 could be leaked for each block of executed module-level code if the
4394 interpreter slack mode is enabled This change deletes any implicitly
4396 object from the module-level code block. Lin Ming.
4398 Removed messages for successful predefined repair(s). The repair
4400 was considered too wordy. Now, messages are only unconditionally emitted
4402 the return object cannot be repaired. Existing messages for successful
4403 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4406 Example Code and Data Size: These are the sizes for the OS-independent
4407 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4408 debug version of the code includes the debug output trace mechanism and
4410 much larger code and data size.
4413 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4414 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4416 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4417 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4419 2) iASL Compiler/Disassembler and Tools:
4421 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4423 were no longer automatically removed at the termination of the compile.
4425 acpiexec: Implemented the -f option to specify default region fill value.
4426 This option specifies the value used to initialize buffers that simulate
4427 operation regions. Default value is zero. Useful for debugging problems
4429 depend on a specific initial value for a region or field.
4431 ----------------------------------------
4432 12 November 2009. Summary of changes for version 20091112:
4434 1) ACPI CA Core Subsystem:
4436 Implemented a post-order callback to AcpiWalkNamespace. The existing
4437 interface only has a pre-order callback. This change adds an additional
4438 parameter for a post-order callback which will be more useful for bus
4440 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4442 Modified the behavior of the operation region memory mapping cache for
4443 SystemMemory. Ensure that the memory mappings created for operation
4445 do not cross 4K page boundaries. Crossing a page boundary while mapping
4446 regions can cause kernel warnings on some hosts if the pages have
4448 attributes. Such regions are probably BIOS bugs, and this is the
4450 Linux BZ 14445. Lin Ming.
4452 Implemented an automatic repair for predefined methods that must return
4453 sorted lists. This change will repair (by sorting) packages returned by
4455 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4457 and do not contain NULL package elements. Adds one new file,
4458 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4460 Fixed a possible fault during predefined name validation if a return
4462 object contains NULL elements. Also adds a warning if a NULL element is
4463 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4465 include repair or removal of all such NULL elements where possible.
4467 Implemented additional module-level executable AML code support. This
4469 will execute module-level code that is not at the root of the namespace
4470 (under a Device object, etc.) at table load time. Module-level executable
4472 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4474 Implemented a new internal function to create Integer objects. This
4476 simplifies miscellaneous object creation code. ACPICA BZ 823.
4478 Reduced the severity of predefined repair messages, Warning to Info.
4480 the object was successfully repaired, a warning is too severe. Reduced to
4482 info message for now. These messages may eventually be changed to debug-
4486 Example Code and Data Size: These are the sizes for the OS-independent
4487 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4488 debug version of the code includes the debug output trace mechanism and
4490 much larger code and data size.
4493 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4494 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4496 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4497 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4499 2) iASL Compiler/Disassembler and Tools:
4501 iASL: Implemented Switch() with While(1) so that Break works correctly.
4503 change correctly implements the Switch operator with a surrounding
4505 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4507 iASL: Added a message if a package initializer list is shorter than
4509 length. Adds a new remark for a Package() declaration if an initializer
4511 exists, but is shorter than the declared length of the package. Although
4512 technically legal, this is probably a coding error and it is seen in the
4513 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4515 iASL: Fixed a problem where the compiler could fault after the maximum
4517 of errors was reached (200).
4519 acpixtract: Fixed a possible warning for pointer cast if the compiler
4521 level set very high.
4523 ----------------------------------------
4524 13 October 2009. Summary of changes for version 20091013:
4526 1) ACPI CA Core Subsystem:
4528 Fixed a problem where an Operation Region _REG method could be executed
4530 than once. If a custom address space handler is installed by the host
4532 the "initialize operation regions" phase of the ACPICA initialization,
4534 _REG methods for that address space could be executed twice. This change
4535 fixes the problem. ACPICA BZ 427. Lin Ming.
4537 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4538 invocation of "Scope(\)" is executed (change scope to root), one internal
4539 operand object was leaked. Lin Ming.
4541 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4542 return value is defined as a Field object in the AML, and the field
4543 size is less than or equal to the default width of an integer (32 or
4545 can incorrectly return an Integer instead of a Buffer. ACPICA now
4546 automatically repairs this problem. ACPICA BZ 810.
4548 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4550 "OEM Information" field is often incorrectly returned as an Integer with
4551 value zero if the field is not supported by the platform. This is due to
4553 ambiguity in the ACPI specification. The field should always be a string.
4554 ACPICA now automatically repairs this problem by returning a NULL string
4555 within the returned Package. ACPICA BZ 807.
4557 Example Code and Data Size: These are the sizes for the OS-independent
4558 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4559 debug version of the code includes the debug output trace mechanism and
4561 much larger code and data size.
4564 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4565 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4567 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4568 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4570 2) iASL Compiler/Disassembler and Tools:
4572 Disassembler: Fixed a problem where references to external symbols that
4573 contained one or more parent-prefixes (carats) were not handled
4575 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4577 Disassembler: Restructured the code so that all functions that handle
4578 external symbols are in a single module. One new file is added,
4581 AML Debugger: Added a max count argument for the Batch command (which
4582 executes multiple predefined methods within the namespace.)
4584 iASL: Updated the compiler documentation (User Reference.) Available at
4585 http://www.acpica.org/documentation/. ACPICA BZ 750.
4587 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4590 ----------------------------------------
4591 03 September 2009. Summary of changes for version 20090903:
4593 1) ACPI CA Core Subsystem:
4595 For Windows Vista compatibility, added the automatic execution of an _INI
4596 method located at the namespace root (\_INI). This method is executed at
4597 table load time. This support is in addition to the automatic execution
4599 \_SB._INI. Lin Ming.
4601 Fixed a possible memory leak in the interpreter for AML package objects
4603 the package initializer list is longer than the defined size of the
4605 This apparently can only happen if the BIOS changes the package size on
4607 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4608 interpreter will truncate the package to the defined size (and issue an
4610 message), but previously could leave the extra objects undeleted if they
4612 pre-created during the argument processing (such is the case if the
4614 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4616 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4617 This has been reported in the field. Previously, ACPICA would zero out
4619 buffer/string. Now, the operation is treated as a noop. Provides Windows
4620 compatibility. ACPICA BZ 803. Lin Ming.
4622 Removed an extraneous error message for ASL constructs of the form
4623 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4625 are seen in many BIOSs and are once again treated as NOOPs and no error
4627 emitted when they are encountered. ACPICA BZ 785.
4629 Fixed an extraneous warning message if a _DSM reserved method returns a
4630 Package object. _DSM can return any type of object, so validation on the
4631 return type cannot be performed. ACPICA BZ 802.
4633 Example Code and Data Size: These are the sizes for the OS-independent
4634 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4635 debug version of the code includes the debug output trace mechanism and
4637 much larger code and data size.
4640 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4641 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4643 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4644 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4646 2) iASL Compiler/Disassembler and Tools:
4648 iASL: Fixed a problem with the use of the Alias operator and Resource
4649 Templates. The correct alias is now constructed and no error is emitted.
4652 iASL: Implemented the -I option to specify additional search directories
4654 include files. Allows multiple additional search paths for include files.
4655 Directories are searched in the order specified on the command line
4657 the local directory is searched.) ACPICA BZ 800.
4659 iASL: Fixed a problem where the full pathname for include files was not
4660 emitted for warnings/errors. This caused the IDE support to not work
4661 properly. ACPICA BZ 765.
4663 iASL: Implemented the -@ option to specify a Windows-style response file
4664 containing additional command line options. ACPICA BZ 801.
4666 AcpiExec: Added support to load multiple AML files simultaneously (such
4669 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4670 pathname. These features allow all machine tables to be easily loaded and
4671 debugged together. ACPICA BZ 804.
4673 Disassembler: Added missing support for disassembly of HEST table Error
4677 ----------------------------------------
4678 30 July 2009. Summary of changes for version 20090730:
4680 The ACPI 4.0 implementation for ACPICA is complete with this release.
4682 1) ACPI CA Core Subsystem:
4684 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4685 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4687 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4689 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4691 have been some ACPI 4.0 changes to other existing tables. Split the large
4692 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4694 ACPI 4.0: Implemented predefined name validation for all new names. There
4696 31 new names in ACPI 4.0. The predefined validation module was split into
4698 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4700 Implemented support for so-called "module-level executable code". This is
4701 executable AML code that exists outside of any control method and is
4703 to be executed at table load time. Although illegal since ACPI 2.0, this
4705 of code still exists and is apparently still being created. Blocks of
4707 code are now detected and executed as intended. Currently, the code
4709 must exist under either an If, Else, or While construct; these are the
4710 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
4712 Implemented an automatic dynamic repair for predefined names that return
4713 nested Package objects. This applies to predefined names that are defined
4715 return a variable-length Package of sub-packages. If the number of sub-
4716 packages is one, BIOS code is occasionally seen that creates a simple
4718 package with no sub-packages. This code attempts to fix the problem by
4719 wrapping a new package object around the existing package. These methods
4721 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
4725 Fixed a regression introduced in 20090625 for the AcpiGetDevices
4727 The _HID/_CID matching was broken and no longer matched IDs correctly.
4731 Fixed a problem with AcpiReset where the reset would silently fail if the
4732 register was one of the protected I/O ports. AcpiReset now bypasses the
4734 validation mechanism. This may eventually be driven into the
4738 Fixed a regression related to the recent update of the AcpiRead/Write
4739 interfaces. A sleep/suspend could fail if the optional PM2 Control
4741 does not exist during an attempt to write the Bus Master Arbitration bit.
4742 (However, some hosts already delete the code that writes this bit, and
4744 code may in fact be obsolete at this date.) ACPICA BZ 799.
4746 Fixed a problem where AcpiTerminate could fault if inadvertently called
4748 in succession. ACPICA BZ 795.
4750 Example Code and Data Size: These are the sizes for the OS-independent
4751 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4752 debug version of the code includes the debug output trace mechanism and
4754 much larger code and data size.
4757 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4758 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4760 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4761 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4763 2) iASL Compiler/Disassembler and Tools:
4765 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
4766 changes to existing tables. ACPICA BZ 775.
4768 ----------------------------------------
4769 25 June 2009. Summary of changes for version 20090625:
4771 The ACPI 4.0 Specification was released on June 16 and is available at
4772 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
4773 continue for the next few releases.
4775 1) ACPI CA Core Subsystem:
4777 ACPI 4.0: Implemented interpreter support for the IPMI operation region
4778 address space. Includes support for bi-directional data buffers and an
4780 address space handler (to be installed by an IPMI device driver.) ACPICA
4784 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
4786 support in both the header files and the disassembler.
4788 Completed a major update for the AcpiGetObjectInfo external interface.
4790 - Support for variable, unlimited length HID, UID, and CID strings.
4791 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
4793 - Call the _SxW power methods on behalf of a device object.
4794 - Determine if a device is a PCI root bridge.
4795 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
4796 These changes will require an update to all callers of this interface.
4798 the updated ACPICA Programmer Reference for details. One new source file
4800 been added - utilities/utids.c. ACPICA BZ 368, 780.
4802 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
4803 transfers. The Value parameter has been extended from 32 bits to 64 bits
4805 order to support new ACPI 4.0 tables. These changes will require an
4808 all callers of these interfaces. See the ACPICA Programmer Reference for
4809 details. ACPICA BZ 768.
4811 Fixed several problems with AcpiAttachData. The handler was not invoked
4813 the host node was deleted. The data sub-object was not automatically
4815 when the host node was deleted. The interface to the handler had an
4817 parameter, this was removed. ACPICA BZ 778.
4819 Enhanced the function that dumps ACPI table headers. All non-printable
4820 characters in the string fields are now replaced with '?' (Signature,
4822 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
4823 these fields are occasionally seen in the field. ACPICA BZ 788.
4825 Fixed a problem with predefined method repair code where the code that
4826 attempts to repair/convert an object of incorrect type is only executed
4828 the first time the predefined method is called. The mechanism that
4830 warnings on subsequent calls was interfering with the repair mechanism.
4833 Fixed a possible memory leak in the predefined validation/repair code
4836 buffer is automatically converted to an expected string object.
4838 Removed obsolete 16-bit files from the distribution and from the current
4840 tree head. ACPICA BZ 776.
4842 Example Code and Data Size: These are the sizes for the OS-independent
4843 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4844 debug version of the code includes the debug output trace mechanism and
4846 much larger code and data size.
4849 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4850 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4852 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4853 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4855 2) iASL Compiler/Disassembler and Tools:
4857 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
4858 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
4860 ACPI 4.0: iASL - implemented compile-time validation support for all new
4861 predefined names and control methods (31 total). ACPICA BZ 769.
4863 ----------------------------------------
4864 21 May 2009. Summary of changes for version 20090521:
4866 1) ACPI CA Core Subsystem:
4868 Disabled the preservation of the SCI enable bit in the PM1 control
4870 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
4873 a "preserved" bit - "OSPM always preserves this bit position", section
4874 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
4875 because the bit needs to be explicitly set by the OS as a workaround. No
4876 machines fail if the bit is not preserved. Therefore, ACPICA no longer
4877 attempts to preserve this bit.
4879 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
4880 incorrectly formed _PRT package could cause a fault. Added validation to
4881 ensure that each package element is actually a sub-package.
4883 Implemented a new interface to install or override a single control
4885 AcpiInstallMethod. This interface is useful when debugging in order to
4887 an existing method or to install a missing method without having to
4889 the entire ACPI table. See the ACPICA Programmer Reference for use and
4890 examples. Lin Ming, Bob Moore.
4892 Fixed several reference count issues with the DdbHandle object that is
4893 created from a Load or LoadTable operator. Prevent premature deletion of
4895 object. Also, mark the object as invalid once the table has been
4897 This is needed because the handle itself may not be deleted after the
4899 unload, depending on whether it has been stored in a named object by the
4902 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
4903 mutexes of the same sync level are acquired but then not released in
4905 opposite order, the internally maintained Current Sync Level becomes
4907 and can cause subsequent execution errors. ACPICA BZ 471.
4909 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
4910 specification has been changed to make the SyncLevel for mutex objects
4912 useful. When releasing a mutex, the SyncLevel of the mutex must now be
4914 same as the current sync level. This makes more sense than the previous
4916 (SyncLevel less than or equal). This change updates the code to match the
4919 Fixed a problem with the local version of the AcpiOsPurgeCache function.
4921 (local) cache must be locked during all cache object deletions. Andrew
4924 Updated the Load operator to use operation region interfaces. This
4926 direct memory mapping with region access calls. Now, all region accesses
4928 through the installed region handler as they should.
4930 Simplified and optimized the NsGetNextNode function. Reduced parameter
4932 and reduced code for this frequently used function.
4934 Example Code and Data Size: These are the sizes for the OS-independent
4935 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4936 debug version of the code includes the debug output trace mechanism and
4938 much larger code and data size.
4941 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4942 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4944 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4945 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4947 2) iASL Compiler/Disassembler and Tools:
4949 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
4951 with sub-table disassembly and handling invalid sub-tables. Attempt
4953 after an invalid sub-table ID.
4955 ----------------------------------------
4956 22 April 2009. Summary of changes for version 20090422:
4958 1) ACPI CA Core Subsystem:
4960 Fixed a compatibility issue with the recently released I/O port
4962 mechanism. For windows compatibility, 1) On a port protection violation,
4963 simply ignore the request and do not return an exception (allow the
4965 method to continue execution.) 2) If only part of the request overlaps a
4966 protected port, read/write the individual ports that are not protected.
4970 Enhanced the execution of the ASL/AML BreakPoint operator so that it
4972 breaks into the AML debugger if the debugger is present. This matches the
4973 ACPI-defined behavior.
4975 Fixed several possible warnings related to the use of the configurable
4976 ACPI_THREAD_ID. This type can now be configured as either an integer or a
4977 pointer with no warnings. Also fixes several warnings in printf-like
4978 statements for the 64-bit build when the type is configured as a pointer.
4981 Fixed a number of possible warnings when compiling with gcc 4+ (depending
4983 warning options.) Examples include printf formats, aliasing, unused
4985 missing prototypes, missing switch default statements, use of non-ANSI
4986 library functions, use of non-ANSI constructs. See generate/unix/Makefile
4988 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
4990 Example Code and Data Size: These are the sizes for the OS-independent
4991 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4992 debug version of the code includes the debug output trace mechanism and
4994 much larger code and data size.
4997 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4998 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5000 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5001 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5003 2) iASL Compiler/Disassembler and Tools:
5005 iASL: Fixed a generation warning from Bison 2.3 and fixed several
5010 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
5012 correctly digest Windows/DOS formatted files (with CR/LF).
5014 iASL: Added a new option for "quiet mode" (-va) that produces only the
5015 compilation summary, not individual errors and warnings. Useful for large
5018 AcpiExec: Implemented a new option (-z) to enable a forced
5020 timeout that can be used to detect hang conditions during execution of
5022 code (includes both internal semaphores and AML-defined mutexes and
5025 Added new makefiles for the generation of acpica in a generic unix-like
5026 environment. These makefiles are intended to generate the acpica tools
5028 utilities from the original acpica git source tree structure.
5030 Test Suites: Updated and cleaned up the documentation files. Updated the
5031 copyrights to 2009, affecting all source files. Use the new version of
5033 with quiet mode. Increased the number of available semaphores in the
5035 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
5037 an alternate implementation of the semaphore timeout to allow aslts to
5038 execute fully on Cygwin.
5040 ----------------------------------------
5041 20 March 2009. Summary of changes for version 20090320:
5043 1) ACPI CA Core Subsystem:
5045 Fixed a possible race condition between AcpiWalkNamespace and dynamic
5047 unloads. Added a reader/writer locking mechanism to allow multiple
5049 namespace walks (readers), but block a dynamic table unload until it can
5051 exclusive write access to the namespace. This fixes a problem where a
5053 unload could (possibly catastrophically) delete the portion of the
5055 that is currently being examined by a walk. Adds a new file, utlock.c,
5057 implements the reader/writer lock mechanism. ACPICA BZ 749.
5059 Fixed a regression introduced in version 20090220 where a change to the
5061 handling could cause the ACPICA subsystem to access non-existent I/O
5064 Modified the handling of FADT register and table (FACS/DSDT) addresses.
5066 FADT can contain both 32-bit and 64-bit versions of these addresses.
5067 Previously, the 64-bit versions were favored, meaning that if both 32 and
5069 versions were valid, but not equal, the 64-bit version was used. This was
5070 found to cause some machines to fail. Now, in this case, the 32-bit
5072 is used instead. This now matches the Windows behavior.
5074 Implemented a new mechanism to protect certain I/O ports. Provides
5076 compatibility and protects the standard PC I/O ports from access via AML
5077 code. Adds a new file, hwvalid.c
5079 Fixed a possible extraneous warning message from the FADT support. The
5080 message warns of a 32/64 length mismatch between the legacy and GAS
5081 definitions for a register.
5083 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
5085 made obsolete by the port protection mechanism above. It was previously
5087 to validate the entire address range of an operation region, which could
5089 incorrect if the range included illegal ports, but fields within the
5090 operation region did not actually access those ports. Validation is now
5091 performed on a per-field basis instead of the entire region.
5093 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
5094 Ignored bits must be "preserved" according to the ACPI spec. Usually,
5096 means a read/modify/write when writing to the register. However, for
5098 registers, writing a one means clear the event. Writing a zero means
5100 the event (do not clear.) This behavior is clarified in the ACPI 4.0
5102 and the ACPICA code now simply always writes a zero to the ignored bit.
5104 Modified the handling of ignored bits for the PM1 A/B Control Registers.
5106 per the ACPI specification, for the control registers, preserve
5107 (read/modify/write) all bits that are defined as either reserved or
5110 Updated the handling of write-only bits in the PM1 A/B Control Registers.
5111 When reading the register, zero the write-only bits as per the ACPI spec.
5112 ACPICA BZ 443. Lin Ming.
5114 Removed "Linux" from the list of supported _OSI strings. Linux no longer
5115 wants to reply true to this request. The Windows strings are the only
5117 through the AML that are tested and known to work properly.
5120 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5121 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5123 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5124 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5126 2) iASL Compiler/Disassembler and Tools:
5128 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
5132 ----------------------------------------
5133 20 February 2009. Summary of changes for version 20090220:
5135 1) ACPI CA Core Subsystem:
5137 Optimized the ACPI register locking. Removed locking for reads from the
5139 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
5141 not required when reading the single-bit registers. The
5142 AcpiGetRegisterUnlocked function is no longer needed and has been
5144 This will improve performance for reads on these registers. ACPICA BZ
5147 Fixed the parameter validation for AcpiRead/Write. Now return
5148 AE_BAD_PARAMETER if the input register pointer is null, and
5151 the register has an address of zero. Previously, these cases simply
5153 AE_OK. For optional registers such as PM1B status/enable/control, the
5155 should check for a valid register address before calling. ACPICA BZ 748.
5157 Renamed the external ACPI bit register access functions. Renamed
5158 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
5159 functions. The new names are AcpiReadBitRegister and
5160 AcpiWriteBitRegister.
5161 Also, restructured the code for these functions by simplifying the code
5163 and condensing duplicate code to reduce code size.
5165 Added new functions to transparently handle the possibly split PM1 A/B
5166 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
5168 now handle the split registers for PM1 Status, Enable, and Control.
5173 Added a function to handle the PM1 control registers,
5174 AcpiHwWritePm1Control.
5175 This function writes both of the PM1 control registers (A/B). These
5177 are different than the PM1 A/B status and enable registers in that
5179 values can be written to the A/B registers. Most notably, the SLP_TYP
5181 can be different, as per the values returned from the _Sx predefined
5184 Removed an extra register write within AcpiHwClearAcpiStatus. This
5186 was writing an optional PM1B status register twice. The existing call to
5188 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
5190 register. ACPICA BZ 751.
5192 Split out the PM1 Status registers from the FADT. Added new globals for
5194 registers (A/B), similar to the way the PM1 Enable registers are handled.
5195 Instead of overloading the FADT Event Register blocks. This makes the
5197 clearer and less prone to error.
5199 Fixed the warning message for when the platform contains too many ACPI
5201 for the default size of the global root table data structure. The
5203 for the truncation value was incorrect.
5205 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
5206 obsolete macro, since it is now a simple reference to ->common.type.
5208 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
5210 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
5211 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
5212 simply SLEEP_TYPE. ACPICA BZ 754.
5214 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
5215 function is only needed on 64-bit host operating systems and is thus not
5216 included for 32-bit hosts.
5218 Debug output: print the input and result for invocations of the _OSI
5220 control method via the ACPI_LV_INFO debug level. Also, reduced some of
5222 verbosity of this debug level. Len Brown.
5224 Example Code and Data Size: These are the sizes for the OS-independent
5225 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5226 debug version of the code includes the debug output trace mechanism and
5228 much larger code and data size.
5231 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5232 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5234 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5235 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5237 2) iASL Compiler/Disassembler and Tools:
5239 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
5240 various legal performance profiles.
5242 ----------------------------------------
5243 23 January 2009. Summary of changes for version 20090123:
5245 1) ACPI CA Core Subsystem:
5247 Added the 2009 copyright to all module headers and signons. This affects
5248 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5249 the tools/utilities.
5251 Implemented a change to allow the host to override any ACPI table,
5253 dynamically loaded tables. Previously, only the DSDT could be replaced by
5255 host. With this change, the AcpiOsTableOverride interface is called for
5257 table found in the RSDT/XSDT during ACPICA initialization, and also
5259 a table is dynamically loaded via the AML Load operator.
5261 Updated FADT flag definitions, especially the Boot Architecture flags.
5263 Debugger: For the Find command, automatically pad the input ACPI name
5265 underscores if the name is shorter than 4 characters. This enables a
5267 with the actual namespace entry which is itself padded with underscores.
5269 Example Code and Data Size: These are the sizes for the OS-independent
5270 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5271 debug version of the code includes the debug output trace mechanism and
5273 much larger code and data size.
5276 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5277 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5279 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5280 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5282 2) iASL Compiler/Disassembler and Tools:
5284 Fix build error under Bison-2.4.
5286 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5288 flags. Now decode all flags, regardless of the FADT version. Flag output
5289 includes the FADT version which first defined each flag.
5291 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5293 DSDT). Windows only.
5295 ----------------------------------------
5296 04 December 2008. Summary of changes for version 20081204:
5298 1) ACPI CA Core Subsystem:
5300 The ACPICA Programmer Reference has been completely updated and revamped
5302 this release. This includes updates to the external interfaces, OSL
5303 interfaces, the overview sections, and the debugger reference.
5305 Several new ACPICA interfaces have been implemented and documented in the
5306 programmer reference:
5307 AcpiReset - Writes the reset value to the FADT-defined reset register.
5308 AcpiDisableAllGpes - Disable all available GPEs.
5309 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5310 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5311 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5312 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5313 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5315 Most of the public ACPI hardware-related interfaces have been moved to a
5317 file, components/hardware/hwxface.c
5319 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5320 register lengths within the FADT are now used, and the low level ACPI
5321 register access no longer hardcodes the ACPI register lengths. Given that
5322 there may be some risk in actually trusting the FADT register lengths, a
5324 time option was added to fall back to the default hardcoded lengths if
5326 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5327 option is set to true for now, and a warning is issued if a suspicious
5329 register length is overridden with the default value.
5331 Fixed a reference count issue in NsRepairObject. This problem was
5333 in version 20081031 as part of a fix to repair Buffer objects within
5336 Added semaphore support to the Linux/Unix application OS-services layer
5337 (OSL). ACPICA BZ 448. Lin Ming.
5339 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5341 be implemented in the OSL, or will binary semaphores be used instead.
5343 Example Code and Data Size: These are the sizes for the OS-independent
5344 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5345 debug version of the code includes the debug output trace mechanism and
5347 much larger code and data size.
5350 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5351 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5353 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5354 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5356 2) iASL Compiler/Disassembler and Tools:
5358 iASL: Completed the '-e' option to include additional ACPI tables in
5361 aid with disassembly and External statement generation. ACPICA BZ 742.
5365 iASL: Removed the "named object in while loop" error. The compiler cannot
5366 determine how many times a loop will execute. ACPICA BZ 730.
5368 Disassembler: Implemented support for FADT revision 2 (MS extension).
5372 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5375 ----------------------------------------
5376 31 October 2008. Summary of changes for version 20081031:
5378 1) ACPI CA Core Subsystem:
5380 Restructured the ACPICA header files into public/private. acpi.h now
5382 only the "public" acpica headers. All other acpica headers are "private"
5384 should not be included by acpica users. One new file, accommon.h is used
5386 include the commonly used private headers for acpica code generation.
5388 plans include moving all private headers to a new subdirectory.
5390 Implemented an automatic Buffer->String return value conversion for
5391 predefined ACPI methods. For these methods (such as _BIF), added
5393 conversion for return objects that are required to be a String, but a
5395 was found instead. This can happen when reading string battery data from
5397 operation region, because it used to be difficult to convert the data
5399 buffer to string from within the ASL. Ensures that the host OS is
5401 with a valid null-terminated string. Linux BZ 11822.
5403 Updated the FACS waking vector interfaces. Split
5404 AcpiSetFirmwareWakingVector
5405 into two: one for the 32-bit vector, another for the 64-bit vector. This
5407 required because the host OS must setup the wake much differently for
5409 vector (real vs. protected mode, etc.) and the interface itself should
5412 deciding which vector to use. Also, eliminated the
5413 GetFirmwareWakingVector
5414 interface, as it served no purpose (only the firmware reads the vector,
5416 only writes the vector.) ACPICA BZ 731.
5418 Implemented a mechanism to escape infinite AML While() loops. Added a
5420 counter to force exit from AML While loops if the count becomes too
5422 This can occur in poorly written AML when the hardware does not respond
5423 within a while loop and the loop does not implement a timeout. The
5425 loop count is configurable. A new exception code is returned when a loop
5427 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5429 Optimized the execution of AML While loops. Previously, a control state
5430 object was allocated and freed for each execution of the loop. The
5431 optimization is to simply reuse the control state for each iteration.
5433 speeds up the raw loop execution time by about 5%.
5435 Enhanced the implicit return mechanism. For Windows compatibility, return
5437 implicit integer of value zero for methods that contain no executable
5439 Such methods are seen in the field as stubs (presumably), and can cause
5440 drivers to fail if they expect a return value. Lin Ming.
5442 Allow multiple backslashes as root prefixes in namepaths. In a fully
5443 qualified namepath, allow multiple backslash prefixes. This can happen
5445 is seen in the field) because of the use of a double-backslash in strings
5446 (since backslash is the escape character) causing confusion. ACPICA BZ
5450 Emit a warning if two different FACS or DSDT tables are discovered in the
5451 FADT. Checks if there are two valid but different addresses for the FACS
5453 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5455 Consolidated the method argument count validation code. Merged the code
5457 validates control method argument counts into the predefined validation
5458 module. Eliminates possible multiple warnings for incorrect argument
5461 Implemented ACPICA example code. Includes code for ACPICA initialization,
5462 handler installation, and calling a control method. Available at
5463 source/tools/examples.
5465 Added a global pointer for FACS table to simplify internal FACS access.
5467 the global pointer instead of using AcpiGetTableByIndex for each FACS
5469 This simplifies the code for the Global Lock and the Firmware Waking
5472 Example Code and Data Size: These are the sizes for the OS-independent
5473 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5474 debug version of the code includes the debug output trace mechanism and
5476 much larger code and data size.
5479 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5480 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5482 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5483 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5485 2) iASL Compiler/Disassembler and Tools:
5487 iASL: Improved disassembly of external method calls. Added the -e option
5489 allow the inclusion of additional ACPI tables to help with the
5492 method invocations and the generation of external declarations during the
5493 disassembly. Certain external method invocations cannot be disassembled
5494 properly without the actual declaration of the method. Use the -e option
5496 include the table where the external method(s) are actually declared.
5498 useful for disassembling SSDTs that make method calls back to the master
5499 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5501 -e dsdt.aml ssdt1.aml
5503 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5504 problem where the use of an alias within a namepath would result in a not
5505 found error or cause the compiler to fault. Also now allows forward
5506 references from the Alias operator itself. ACPICA BZ 738.
5508 ----------------------------------------
5509 26 September 2008. Summary of changes for version 20080926:
5511 1) ACPI CA Core Subsystem:
5513 Designed and implemented a mechanism to validate predefined ACPI methods
5515 objects. This code validates the predefined ACPI objects (objects whose
5517 start with underscore) that appear in the namespace, at the time they are
5518 evaluated. The argument count and the type of the returned object are
5519 validated against the ACPI specification. The purpose of this validation
5521 to detect problems with the BIOS-implemented predefined ACPI objects
5523 the results are returned to the ACPI-related drivers. Future enhancements
5525 include actual repair of incorrect return objects where possible. Two new
5526 files are nspredef.c and acpredef.h.
5528 Fixed a fault in the AML parser if a memory allocation fails during the
5530 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5532 Fixed an issue with implicit return compatibility. This change improves
5534 implicit return mechanism to be more compatible with the MS interpreter.
5536 Ming, ACPICA BZ 349.
5538 Implemented support for zero-length buffer-to-string conversions. Allow
5540 length strings during interpreter buffer-to-string conversions. For
5542 during the ToDecimalString and ToHexString operators, as well as implicit
5543 conversions. Fiodor Suietov, ACPICA BZ 585.
5545 Fixed two possible memory leaks in the error exit paths of
5546 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5548 similar in that they use a stack of state objects in order to eliminate
5549 recursion. The stack must be fully unwound and deallocated if an error
5550 occurs. Lin Ming. ACPICA BZ 383.
5552 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5554 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5555 Moore ACPICA BZ 442.
5557 Removed the obsolete version number in module headers. Removed the
5558 "$Revision" number that appeared in each module header. This version
5560 was useful under SourceSafe and CVS, but has no meaning under git. It is
5562 only incorrect, it could also be misleading.
5564 Example Code and Data Size: These are the sizes for the OS-independent
5565 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5566 debug version of the code includes the debug output trace mechanism and
5568 much larger code and data size.
5571 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5572 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5574 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5575 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5577 ----------------------------------------
5578 29 August 2008. Summary of changes for version 20080829:
5580 1) ACPI CA Core Subsystem:
5582 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5583 Reference. Changes include the elimination of cheating on the Object
5585 for the DdbHandle subtype, addition of a reference class field to
5586 differentiate the various reference types (instead of an AML opcode), and
5588 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5590 Reduce an error to a warning for an incorrect method argument count.
5591 Previously aborted with an error if too few arguments were passed to a
5592 control method via the external ACPICA interface. Now issue a warning
5594 and continue. Handles the case where the method inadvertently declares
5596 many arguments, but does not actually use the extra ones. Applies mainly
5598 the predefined methods. Lin Ming. Linux BZ 11032.
5600 Disallow the evaluation of named object types with no intrinsic value.
5602 AE_TYPE for objects that have no value and therefore evaluation is
5604 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5606 these types were allowed, but an exception would be generated at some
5608 during the evaluation. Now, the error is generated up front.
5610 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5611 (nsnames.c). Fixes a leak in the error exit path.
5613 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5615 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5617 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5620 Removed obsolete and/or unused exception codes from the acexcep.h header.
5621 There is the possibility that certain device drivers may be affected if
5623 use any of these exceptions.
5625 The ACPICA documentation has been added to the public git source tree,
5627 acpica/documents. Included are the ACPICA programmer reference, the iASL
5628 compiler reference, and the changes.txt release logfile.
5630 Example Code and Data Size: These are the sizes for the OS-independent
5631 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5632 debug version of the code includes the debug output trace mechanism and
5634 much larger code and data size.
5637 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5638 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5640 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5641 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5643 2) iASL Compiler/Disassembler and Tools:
5645 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5646 defines _SCP with 3 arguments. Previous versions defined it with only 1
5647 argument. iASL now allows both definitions.
5649 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5651 length subtables when disassembling ACPI tables. Also fixed a couple of
5652 errors where a full 16-bit table type field was not extracted from the
5656 acpisrc: Improve comment counting mechanism for generating source code
5657 statistics. Count first and last lines of multi-line comments as
5659 not comment lines. Handle Linux legal header in addition to standard
5663 ----------------------------------------
5665 29 July 2008. Summary of changes for version 20080729:
5667 1) ACPI CA Core Subsystem:
5669 Fix a possible deadlock in the GPE dispatch. Remove call to
5670 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5672 to acquire the GPE lock but can deadlock since the GPE lock is already
5674 at dispatch time. This code was introduced in version 20060831 as a
5676 to Linux BZ 6881 and has since been removed from Linux.
5678 Add a function to dereference returned reference objects. Examines the
5680 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5682 automatically dereferenced in an attempt to return something useful
5684 reference types cannot be converted into an external ACPI_OBJECT.)
5686 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5688 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5689 subtables for the MADT and one new subtable for the SRAT. Includes
5690 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5692 Specification, June 2008.
5694 Additional error checking for pathname utilities. Add error check after
5696 calls to AcpiNsGetPathnameLength. Add status return from
5697 AcpiNsBuildExternalPath and check after all calls. Add parameter
5699 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5701 Return status from the global init function AcpiUtGlobalInitialize. This
5703 used by both the kernel subsystem and the utilities such as iASL
5705 The function could possibly fail when the caches are initialized. Yang
5708 Add a function to decode reference object types to strings. Created for
5709 improved error messages.
5711 Improve object conversion error messages. Better error messages during
5713 conversion from internal to the external ACPI_OBJECT. Used for external
5715 to AcpiEvaluateObject.
5717 Example Code and Data Size: These are the sizes for the OS-independent
5718 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5719 debug version of the code includes the debug output trace mechanism and
5721 much larger code and data size.
5724 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5725 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5727 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5728 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5730 2) iASL Compiler/Disassembler and Tools:
5732 Debugger: fix a possible hang when evaluating non-methods. Fixes a
5734 introduced in version 20080701. If the object being evaluated (via
5736 command) is not a method, the debugger can hang while trying to obtain
5738 existent parameters.
5740 iASL: relax error for using reserved "_T_x" identifiers. These names can
5741 appear in a disassembled ASL file if they were emitted by the original
5742 compiler. Instead of issuing an error or warning and forcing the user to
5743 manually change these names, issue a remark instead.
5745 iASL: error if named object created in while loop. Emit an error if any
5747 object is created within a While loop. If allowed, this code will
5750 run-time error on the second iteration of the loop when an attempt is
5753 create the same named object twice. ACPICA bugzilla 730.
5755 iASL: Support absolute pathnames for include files. Add support for
5757 pathnames within the Include operator. previously, only relative
5761 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
5763 The ACPI spec requires one interrupt minimum. BZ 423
5765 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
5766 Handles the case for the Interrupt Resource Descriptor where
5767 the ResourceSource argument is omitted but ResourceSourceIndex
5768 is present. Now leave room for the Index. BZ 426
5770 iASL: Prevent error message if CondRefOf target does not exist. Fixes
5772 where an error message is emitted if the target does not exist. BZ 516
5774 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
5775 (get ACPI tables on Windows). This was apparently broken in version
5778 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
5780 the EOF happens immediately after the last table in the input file. Print
5781 completion message. Previously, no message was displayed in this case.
5783 ----------------------------------------
5784 01 July 2008. Summary of changes for version 20080701:
5786 0) Git source tree / acpica.org
5788 Fixed a problem where a git-clone from http would not transfer the entire
5791 1) ACPI CA Core Subsystem:
5793 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
5794 enable bit. Now performs a read-change-write of the enable register
5796 of simply writing out the cached enable mask. This will prevent
5798 enabling of GPEs if a rogue GPE is received during initialization (before
5800 handlers are installed.)
5802 Implemented a copy for dynamically loaded tables. Previously, dynamically
5803 loaded tables were simply mapped - but on some machines this memory is
5804 corrupted after suspend. Now copy the table to a local buffer. For the
5805 OpRegion case, added checksum verify. Use the table length from the table
5806 header, not the region length. For the Buffer case, use the table length
5807 also. Dennis Noordsij, Bob Moore. BZ 10734
5809 Fixed a problem where the same ACPI table could not be dynamically loaded
5811 unloaded more than once. Without this change, a table cannot be loaded
5813 once it has been loaded/unloaded one time. The current mechanism does not
5814 unregister a table upon an unload. During a load, if the same table is
5816 this no longer returns an exception. BZ 722
5818 Fixed a problem where the wrong descriptor length was calculated for the
5819 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
5821 are calculated as 12 bytes long, but the actual length in the internal
5822 descriptor is 16 because of the round-up to 8 on the 64-bit build.
5824 by Linn Crosetto. BZ 728
5826 Fixed a possible memory leak in the Unload operator. The DdbHandle
5828 by Load() did not have its reference count decremented during unload,
5830 to a memory leak. Lin Ming. BZ 727
5832 Fixed a possible memory leak when deleting thermal/processor objects. Any
5833 associated notify handlers (and objects) were not being deleted. Fiodor
5836 Fixed the ordering of the ASCII names in the global mutex table to match
5838 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
5840 Vegard Nossum. BZ 726
5842 Enhanced the AcpiGetObjectInfo interface to return the number of required
5843 arguments if the object is a control method. Added this call to the
5845 so the proper number of default arguments are passed to a method. This
5846 prevents a warning when executing methods from AcpiExec.
5848 Added a check for an invalid handle in AcpiGetObjectInfo. Return
5849 AE_BAD_PARAMETER if input handle is invalid. BZ 474
5851 Fixed an extraneous warning from exconfig.c on the 64-bit build.
5853 Example Code and Data Size: These are the sizes for the OS-independent
5854 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5855 debug version of the code includes the debug output trace mechanism and
5857 much larger code and data size.
5860 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5861 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5863 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5864 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5866 2) iASL Compiler/Disassembler and Tools:
5868 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
5869 resource descriptor names.
5871 iASL: Detect invalid ASCII characters in input (windows version). Removed
5873 "-CF" flag from the flex compile, enables correct detection of non-ASCII
5874 characters in the input. BZ 441
5876 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
5878 "result of operation not used" warning when the DDB handle returned from
5879 LoadTable is not used. The warning is not needed. BZ 590
5881 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
5884 pass address of table to the AML. Added option to disable OpRegion
5886 to allow creation of an OpRegion with a real address that was passed to
5888 All of this allows testing of the Load and Unload operators from
5891 Debugger: update tables command for unloaded tables. Handle unloaded
5893 and use the standard table header output routine.
5895 ----------------------------------------
5896 09 June 2008. Summary of changes for version 20080609:
5898 1) ACPI CA Core Subsystem:
5900 Implemented a workaround for reversed _PRT entries. A significant number
5902 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
5903 change dynamically detects and repairs this problem. Provides
5905 with MS ACPI. BZ 6859
5907 Simplified the internal ACPI hardware interfaces to eliminate the locking
5908 flag parameter from Register Read/Write. Added a new external interface,
5909 AcpiGetRegisterUnlocked.
5911 Fixed a problem where the invocation of a GPE control method could hang.
5913 was a regression introduced in 20080514. The new method argument count
5914 validation mechanism can enter an infinite loop when a GPE method is
5915 dispatched. Problem fixed by removing the obsolete code that passed GPE
5917 information to the notify handler via the control method parameter
5920 Fixed a problem where the _SST execution status was incorrectly returned
5922 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
5924 20080514. _SST is optional and a NOT_FOUND exception should never be
5927 Fixed a problem where a deleted object could be accessed from within the
5929 parser. This was a regression introduced in version 20080123 as a fix for
5931 Unload operator. Lin Ming. BZ 10669
5933 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
5935 and eliminated the use of a negative index in a loop. Operands are now
5936 displayed in the correct order, not backwards. This also fixes a
5938 introduced in 20080514 on 64-bit systems where the elimination of
5939 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
5942 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
5944 path did not delete a locally allocated structure.
5946 Updated definitions for the DMAR and SRAT tables to synchronize with the
5947 current specifications. Includes disassembler support.
5949 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
5950 loop termination value was used. Loop terminated on iteration early,
5952 one mutex. Linn Crosetto
5954 Example Code and Data Size: These are the sizes for the OS-independent
5955 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5956 debug version of the code includes the debug output trace mechanism and
5958 much larger code and data size.
5961 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5962 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5964 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5965 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5967 2) iASL Compiler/Disassembler and Tools:
5969 Disassembler: Implemented support for EisaId() within _CID objects. Now
5970 disassemble integer _CID objects back to EisaId invocations, including
5971 multiple integers within _CID packages. Includes single-step support for
5974 Disassembler: Added support for DMAR and SRAT table definition changes.
5976 ----------------------------------------
5977 14 May 2008. Summary of changes for version 20080514:
5979 1) ACPI CA Core Subsystem:
5981 Fixed a problem where GPEs were enabled too early during the ACPICA
5982 initialization. This could lead to "handler not installed" errors on some
5983 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
5985 ensures that all operation regions and devices throughout the namespace
5987 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
5989 Implemented a change to the enter sleep code. Moved execution of the _GTS
5990 method to just before setting sleep enable bit. The execution was moved
5992 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
5993 immediately before the SLP_EN bit is set, as per the ACPI specification.
5996 Implemented a fix to disable unknown GPEs (2nd version). Now always
5998 the GPE, even if ACPICA thinks that that it is already disabled. It is
5999 possible that the AML or some other code has enabled the GPE unbeknownst
6003 Fixed a problem with the Field operator where zero-length fields would
6005 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
6007 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
6009 Implemented a fix for the Load operator, now load the table at the
6011 root. This reverts a change introduced in version 20071019. The table is
6013 loaded at the namespace root even though this goes against the ACPI
6014 specification. This provides compatibility with other ACPI
6016 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
6019 Fixed a problem where ACPICA would not Load() tables with unusual
6021 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
6022 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
6023 Therefore, signature validation is worthless. Apparently MS ACPI accepts
6025 signatures, ACPICA must be compatible. BZ 10454.
6027 Fixed a possible negative array index in AcpiUtValidateException. Added
6029 fields to the exception string arrays to eliminate a -1 subtraction on
6033 Updated the debug tracking macros to reduce overall code and data size.
6034 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
6035 instead of pointers to static strings. Jan Beulich and Bob Moore.
6037 Implemented argument count checking in control method invocation via
6038 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
6040 many. This applies only to extern programmatic control method execution,
6042 method-to-method calls within the AML. Lin Ming.
6044 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
6046 longer needed, especially with the removal of 16-bit support. It was
6048 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
6051 32/64-bit platforms is required.
6053 Added the C const qualifier for appropriate string constants -- mostly
6054 MODULE_NAME and printf format strings. Jan Beulich.
6056 Example Code and Data Size: These are the sizes for the OS-independent
6057 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6058 debug version of the code includes the debug output trace mechanism and
6060 much larger code and data size.
6063 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6064 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6066 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6067 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6069 2) iASL Compiler/Disassembler and Tools:
6071 Implemented ACPI table revision ID validation in the disassembler. Zero
6073 always invalid. For DSDTs, the ID controls the interpreter integer width.
6075 means 32-bit and this is unusual. 2 or greater is 64-bit.
6077 ----------------------------------------
6078 21 March 2008. Summary of changes for version 20080321:
6080 1) ACPI CA Core Subsystem:
6082 Implemented an additional change to the GPE support in order to suppress
6083 spurious or stray GPEs. The AcpiEvDisableGpe function will now
6085 disable incoming GPEs that are neither enabled nor disabled -- meaning
6087 the GPE is unknown to the system. This should prevent future interrupt
6089 from that GPE. BZ 6217 (Zhang Rui)
6091 Fixed a problem where NULL package elements were not returned to the
6092 AcpiEvaluateObject interface correctly. The element was simply ignored
6093 instead of returning a NULL ACPI_OBJECT package element, potentially
6095 a buffer overflow and/or confusing the caller who expected a fixed number
6097 elements. BZ 10132 (Lin Ming, Bob Moore)
6099 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
6101 Qword), Field, BankField, and IndexField operators when invoked from
6103 an executing control method. In this case, these operators created
6105 nodes that were incorrectly left marked as permanent nodes instead of
6106 temporary nodes. This could cause a problem if there is race condition
6107 between an exiting control method and a running namespace walk. (Reported
6111 Fixed a problem where the CreateField and CreateXXXField operators would
6112 incorrectly allow duplicate names (the name of the field) with no
6116 Implemented several changes for Notify handling. Added support for new
6118 values (ACPI 2.0+) and improved the Notify debug output. Notify on
6119 PowerResource objects is no longer allowed, as per the ACPI
6121 (Bob Moore, Zhang Rui)
6123 All Reference Objects returned via the AcpiEvaluateObject interface are
6125 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
6127 NULL objects - either NULL package elements or unresolved named
6130 Fixed a problem where an extraneous debug message was produced for
6132 objects (when debugging enabled). The message "Package List length larger
6133 than NumElements count" is now produced in the correct case, and is now
6135 error message rather than a debug message. Added a debug message for the
6136 opposite case, where NumElements is larger than the Package List (the
6138 will be padded out with NULL elements as per the ACPI spec.)
6140 Implemented several improvements for the output of the ASL "Debug" object
6142 clarify and keep all data for a given object on one output line.
6144 Fixed two size calculation issues with the variable-length Start
6146 resource descriptor.
6148 Example Code and Data Size: These are the sizes for the OS-independent
6149 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6150 debug version of the code includes the debug output trace mechanism and
6152 a much larger code and data size.
6155 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6156 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6158 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6159 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6161 2) iASL Compiler/Disassembler and Tools:
6163 Fixed a problem with the use of the Switch operator where execution of
6165 containing method by multiple concurrent threads could cause an
6166 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
6167 actual Switch opcode, it must be simulated with local named temporary
6168 variables and if/else pairs. The solution chosen was to mark any method
6170 uses Switch as Serialized, thus preventing multiple thread entries. BZ
6173 ----------------------------------------
6174 13 February 2008. Summary of changes for version 20080213:
6176 1) ACPI CA Core Subsystem:
6178 Implemented another MS compatibility design change for GPE/Notify
6180 GPEs are now cleared/enabled asynchronously to allow all pending notifies
6182 complete first. It is expected that the OSL will queue the enable request
6183 behind all pending notify requests (may require changes to the local host
6185 in AcpiOsExecute). Alexey Starikovskiy.
6187 Fixed a problem where buffer and package objects passed as arguments to a
6188 control method via the external AcpiEvaluateObject interface could cause
6190 AE_AML_INTERNAL exception depending on the order and type of operators
6191 executed by the target control method.
6193 Fixed a problem where resource descriptor size optimization could cause a
6194 problem when a _CRS resource template is passed to a _SRS method. The
6196 resource template must use the same descriptors (with the same size) as
6197 returned from _CRS. This change affects the following resource
6199 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
6202 Fixed a problem where a CopyObject to RegionField, BankField, and
6204 objects did not perform an implicit conversion as it should. These types
6206 retain their initial type permanently as per the ACPI specification.
6208 a CopyObject to all other object types should not perform an implicit
6209 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
6211 Fixed a problem with the AcpiGetDevices interface where the mechanism to
6212 match device CIDs did not examine the entire list of available CIDs, but
6213 instead aborted on the first non-matching CID. Andrew Patterson.
6215 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
6217 inadvertently changed to return a 16-bit value instead of a 32-bit value,
6218 truncating the upper dword of a 64-bit value. This macro is only used to
6219 display debug output, so no incorrect calculations were made. Also,
6220 reimplemented the macro so that a 64-bit shift is not performed by
6221 inefficient compilers.
6223 Added missing va_end statements that should correspond with each va_start
6226 Example Code and Data Size: These are the sizes for the OS-independent
6227 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6228 debug version of the code includes the debug output trace mechanism and
6230 a much larger code and data size.
6233 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6234 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6236 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6237 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6239 2) iASL Compiler/Disassembler and Tools:
6241 Implemented full disassembler support for the following new ACPI tables:
6242 BERT, EINJ, and ERST. Implemented partial disassembler support for the
6243 complicated HEST table. These tables support the Windows Hardware Error
6244 Architecture (WHEA).
6246 ----------------------------------------
6247 23 January 2008. Summary of changes for version 20080123:
6249 1) ACPI CA Core Subsystem:
6251 Added the 2008 copyright to all module headers and signons. This affects
6252 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6253 the tools/utilities.
6255 Fixed a problem with the SizeOf operator when used with Package and
6257 objects. These objects have deferred execution for some arguments, and
6259 execution is now completed before the SizeOf is executed. This problem
6261 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6265 Implemented an enhancement to the interpreter "slack mode". In the
6268 an explicit return or an implicitly returned object from the last
6270 opcode, a control method will now implicitly return an integer of value 0
6272 Microsoft compatibility. (Lin Ming) BZ 392
6274 Fixed a problem with the Load operator where an exception was not
6277 the case where the table is already loaded. (Lin Ming) BZ 463
6279 Implemented support for the use of DDBHandles as an Indexed Reference, as
6281 the ACPI spec. (Lin Ming) BZ 486
6283 Implemented support for UserTerm (Method invocation) for the Unload
6285 as per the ACPI spec. (Lin Ming) BZ 580
6287 Fixed a problem with the LoadTable operator where the OemId and
6289 input strings could cause unexpected failures if they were shorter than
6291 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6293 Implemented support for UserTerm (Method invocation) for the Unload
6295 as per the ACPI spec. (Lin Ming) BZ 580
6297 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6299 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6301 Example Code and Data Size: These are the sizes for the OS-independent
6302 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6303 debug version of the code includes the debug output trace mechanism and
6305 a much larger code and data size.
6308 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6309 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6311 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6312 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6314 2) iASL Compiler/Disassembler and Tools:
6316 Implemented support in the disassembler for checksum validation on
6318 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6320 header dump at the start of the disassembly.
6322 Implemented additional debugging information in the namespace listing
6324 created during compilation. In addition to the namespace hierarchy, the
6326 pathname to each namespace object is displayed.
6328 Fixed a problem with the disassembler where invalid ACPI tables could
6330 faults or infinite loops.
6332 Fixed an unexpected parse error when using the optional "parameter types"
6333 list in a control method declaration. (Lin Ming) BZ 397
6335 Fixed a problem where two External declarations with the same name did
6337 cause an error (Lin Ming) BZ 509
6339 Implemented support for full TermArgs (adding Argx, Localx and method
6340 invocation) for the ParameterData parameter to the LoadTable operator.
6344 ----------------------------------------
6345 19 December 2007. Summary of changes for version 20071219:
6347 1) ACPI CA Core Subsystem:
6349 Implemented full support for deferred execution for the TermArg string
6350 arguments for DataTableRegion. This enables forward references and full
6351 operand resolution for the three string arguments. Similar to
6353 deferred argument execution.) Lin Ming. BZ 430
6355 Implemented full argument resolution support for the BankValue argument
6357 BankField. Previously, only constants were supported, now any TermArg may
6359 used. Lin Ming BZ 387, 393
6361 Fixed a problem with AcpiGetDevices where the search of a branch of the
6362 device tree could be terminated prematurely. In accordance with the ACPI
6363 specification, the search down the current branch is terminated if a
6365 is both not present and not functional (instead of just not present.)
6369 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6371 the underlying AML code changed the GPE enable registers. Now, any
6373 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6375 instead of simply ignored. Rui Zhang.
6377 Fixed a problem with Index Fields where the Index register was
6379 limited to a maximum of 32 bits. Now any size may be used.
6381 Fixed a couple memory leaks associated with "implicit return" objects
6383 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6385 Example Code and Data Size: These are the sizes for the OS-independent
6386 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6387 debug version of the code includes the debug output trace mechanism and
6389 a much larger code and data size.
6392 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6393 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6395 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6396 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6398 ----------------------------------------
6399 14 November 2007. Summary of changes for version 20071114:
6401 1) ACPI CA Core Subsystem:
6403 Implemented event counters for each of the Fixed Events, the ACPI SCI
6404 (interrupt) itself, and control methods executed. Named
6405 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6407 should be useful for debugging and statistics.
6409 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6410 contents of the various event counters. Returns the current values for
6411 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6412 AcpiMethodCount. The interface can be expanded in the future if new
6414 are added. Device drivers should use this interface rather than access
6418 Fixed a problem with the FromBCD and ToBCD operators. With some
6420 the ShortDivide function worked incorrectly, causing problems with the
6422 functions with large input values. A truncation from 64-bit to 32-bit
6423 inadvertently occurred. Internal BZ 435. Lin Ming
6425 Fixed a problem with Index references passed as method arguments.
6427 passed as arguments to control methods were dereferenced immediately
6429 control was passed to the called method). The references are now
6431 passed directly to the called method. BZ 5389. Lin Ming
6433 Fixed a problem with CopyObject used in conjunction with the Index
6435 The reference was incorrectly dereferenced before the copy. The reference
6437 now correctly copied. BZ 5391. Lin Ming
6439 Fixed a problem with Control Method references within Package objects.
6441 references are now correctly generated. This completes the package
6442 construction overhaul that began in version 20071019.
6444 Example Code and Data Size: These are the sizes for the OS-independent
6445 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6446 debug version of the code includes the debug output trace mechanism and
6448 a much larger code and data size.
6451 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6452 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6454 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6455 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6458 2) iASL Compiler/Disassembler and Tools:
6460 The AcpiExec utility now installs handlers for all of the predefined
6461 Operation Region types. New types supported are: PCI_Config, CMOS, and
6464 Fixed a problem with the 64-bit version of AcpiExec where the extended
6466 bit) address fields for the DSDT and FACS within the FADT were not being
6467 used, causing truncation of the upper 32-bits of these addresses. Lin
6471 ----------------------------------------
6472 19 October 2007. Summary of changes for version 20071019:
6474 1) ACPI CA Core Subsystem:
6476 Fixed a problem with the Alias operator when the target of the alias is a
6477 named ASL operator that opens a new scope -- Scope, Device,
6479 Processor, and ThermalZone. In these cases, any children of the original
6480 operator could not be accessed via the alias, potentially causing
6482 AE_NOT_FOUND exceptions. (BZ 9067)
6484 Fixed a problem with the Package operator where all named references were
6485 created as object references and left otherwise unresolved. According to
6487 ACPI specification, a Package can only contain Data Objects or references
6489 control methods. The implication is that named references to Data Objects
6490 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6491 immediately upon package creation. This is the approach taken with this
6492 change. References to all other named objects (Methods, Devices, Scopes,
6493 etc.) are all now properly created as reference objects. (BZ 5328)
6495 Reverted a change to Notify handling that was introduced in version
6496 20070508. This version changed the Notify handling from asynchronous to
6497 fully synchronous (Device driver Notify handling with respect to the
6499 ASL operator). It was found that this change caused more problems than it
6500 solved and was removed by most users.
6502 Fixed a problem with the Increment and Decrement operators where the type
6504 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6507 Fixed a problem with the Load and LoadTable operators where the table
6508 location within the namespace was ignored. Instead, the table was always
6509 loaded into the root or current scope. Lin Ming.
6511 Fixed a problem with the Load operator when loading a table from a buffer
6512 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6514 Fixed a problem with the Debug object where a store of a DdbHandle
6516 object to the Debug object could cause a fault.
6518 Added a table checksum verification for the Load operator, in the case
6520 the load is from a buffer. (BZ 578).
6522 Implemented additional parameter validation for the LoadTable operator.
6524 length of the input strings SignatureString, OemIdString, and OemTableId
6526 now checked for maximum lengths. (BZ 582) Lin Ming.
6528 Example Code and Data Size: These are the sizes for the OS-independent
6529 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6530 debug version of the code includes the debug output trace mechanism and
6532 a much larger code and data size.
6535 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6536 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6538 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6539 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6542 2) iASL Compiler/Disassembler:
6544 Fixed a problem where if a single file was specified and the file did not
6545 exist, no error message was emitted. (Introduced with wildcard support in
6548 ----------------------------------------
6549 19 September 2007. Summary of changes for version 20070919:
6551 1) ACPI CA Core Subsystem:
6553 Designed and implemented new external interfaces to install and remove
6554 handlers for ACPI table-related events. Current events that are defined
6556 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6557 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6558 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6560 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6561 (acpi_serialized option on Linux) could cause some systems to hang during
6562 initialization. (Bob Moore) BZ 8171
6564 Fixed a problem where objects of certain types (Device, ThermalZone,
6565 Processor, PowerResource) can be not found if they are declared and
6566 referenced from within the same control method (Lin Ming) BZ 341
6568 Example Code and Data Size: These are the sizes for the OS-independent
6569 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6570 debug version of the code includes the debug output trace mechanism and
6572 a much larger code and data size.
6575 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6576 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6578 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6579 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6582 2) iASL Compiler/Disassembler:
6584 Implemented support to allow multiple files to be compiled/disassembled
6587 single invocation. This includes command line wildcard support for both
6589 Windows and Unix versions of the compiler. This feature simplifies the
6590 disassembly and compilation of multiple ACPI tables in a single
6593 ----------------------------------------
6594 08 May 2007. Summary of changes for version 20070508:
6596 1) ACPI CA Core Subsystem:
6598 Implemented a Microsoft compatibility design change for the handling of
6600 Notify AML operator. Previously, notify handlers were dispatched and
6601 executed completely asynchronously in a deferred thread. The new design
6602 still executes the notify handlers in a different thread, but the
6604 thread that executed the Notify() now waits at a synchronization point
6606 the notify handler to complete. Some machines depend on a synchronous
6608 operator in order to operate correctly.
6610 Implemented support to allow Package objects to be passed as method
6611 arguments to the external AcpiEvaluateObject interface. Previously, this
6612 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6613 implemented since there were no reserved control methods that required it
6616 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6618 contained invalid non-zero values in reserved fields could cause later
6619 failures because these fields have meaning in later revisions of the
6621 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6623 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6625 Fixed a problem where the Global Lock handle was not properly updated if
6627 thread that acquired the Global Lock via executing AML code then
6629 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6633 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6634 could be corrupted if the interrupt being removed was at the head of the
6635 list. Reported by Linn Crosetto.
6637 Example Code and Data Size: These are the sizes for the OS-independent
6638 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6639 debug version of the code includes the debug output trace mechanism and
6641 a much larger code and data size.
6644 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6645 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6647 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6648 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6650 ----------------------------------------
6651 20 March 2007. Summary of changes for version 20070320:
6653 1) ACPI CA Core Subsystem:
6655 Implemented a change to the order of interpretation and evaluation of AML
6656 operand objects within the AML interpreter. The interpreter now evaluates
6657 operands in the order that they appear in the AML stream (and the
6658 corresponding ASL code), instead of in the reverse order (after the
6660 operand list has been parsed). The previous behavior caused several
6662 incompatibilities with the Microsoft AML interpreter as well as being
6663 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6665 Implemented a change to the ACPI Global Lock support. All interfaces to
6667 global lock now allow the same thread to acquire the lock multiple times.
6668 This affects the AcpiAcquireGlobalLock external interface to the global
6670 as well as the internal use of the global lock to support AML fields -- a
6671 control method that is holding the global lock can now simultaneously
6673 AML fields that require global lock protection. Previously, in both
6675 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6677 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6678 Controller. There is no change to the behavior of the AML Acquire
6680 as this can already be used to acquire a mutex multiple times by the same
6681 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6683 Fixed a problem where invalid objects could be referenced in the AML
6684 Interpreter after error conditions. During operand evaluation, ensure
6686 the internal "Return Object" field is cleared on error and only valid
6687 pointers are stored there. Caused occasional access to deleted objects
6689 resulted in "large reference count" warning messages. Valery Podrezov.
6691 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6693 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6696 Fixed an internal problem with the handling of result objects on the
6697 interpreter result stack. BZ 7872. Valery Podrezov.
6699 Removed obsolete code that handled the case where AML_NAME_OP is the
6701 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6702 7874. Valery Podrezov.
6704 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6707 remnant from the previously discontinued 16-bit support.
6709 Example Code and Data Size: These are the sizes for the OS-independent
6710 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6711 debug version of the code includes the debug output trace mechanism and
6713 a much larger code and data size.
6716 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6717 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6719 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6720 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6722 ----------------------------------------
6723 26 January 2007. Summary of changes for version 20070126:
6725 1) ACPI CA Core Subsystem:
6727 Added the 2007 copyright to all module headers and signons. This affects
6728 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6731 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
6732 during a table load. A bad pointer was passed in the case where the DSDT
6734 overridden, causing a fault in this case.
6736 Example Code and Data Size: These are the sizes for the OS-independent
6737 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6738 debug version of the code includes the debug output trace mechanism and
6740 a much larger code and data size.
6743 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6744 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6746 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6747 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6749 ----------------------------------------
6750 15 December 2006. Summary of changes for version 20061215:
6752 1) ACPI CA Core Subsystem:
6754 Support for 16-bit ACPICA has been completely removed since it is no
6756 necessary and it clutters the code. All 16-bit macros, types, and
6757 conditional compiles have been removed, cleaning up and simplifying the
6759 across the entire subsystem. DOS support is no longer needed since the
6760 bootable Linux firmware kit is now available.
6762 The handler for the Global Lock is now removed during AcpiTerminate to
6763 enable a clean subsystem restart, via the implementation of the
6764 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
6767 Implemented enhancements to the multithreading support within the
6769 to enable improved multithreading debugging and evaluation of the
6773 Debugger: Enhanced the Statistics/Memory command to emit the total
6775 memory used during the execution, as well as the maximum memory consumed
6777 each of the various object types. (Valery Podrezov)
6779 Example Code and Data Size: These are the sizes for the OS-independent
6780 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6781 debug version of the code includes the debug output trace mechanism and
6783 a much larger code and data size.
6786 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6787 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6789 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6790 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6793 2) iASL Compiler/Disassembler and Tools:
6795 AcpiExec: Implemented a new option (-m) to display full memory use
6796 statistics upon subsystem/program termination. (Valery Podrezov)
6798 ----------------------------------------
6799 09 November 2006. Summary of changes for version 20061109:
6801 1) ACPI CA Core Subsystem:
6803 Optimized the Load ASL operator in the case where the source operand is
6805 operation region. Simply map the operation region memory, instead of
6806 performing a bytewise read. (Region must be of type SystemMemory, see
6809 Fixed the Load ASL operator for the case where the source operand is a
6810 region field. A buffer object is also allowed as the source operand. BZ
6813 Fixed a problem where the Load ASL operator allowed the source operand to
6815 an operation region of any type. It is now restricted to regions of type
6816 SystemMemory, as per the ACPI specification. BZ 481
6818 Additional cleanup and optimizations for the new Table Manager code.
6820 AcpiEnable will now fail if all of the required ACPI tables are not
6822 (FADT, FACS, DSDT). BZ 477
6824 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
6826 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
6827 manually optimized to be aligned and will not work if it is byte-packed.
6829 Example Code and Data Size: These are the sizes for the OS-independent
6830 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6831 debug version of the code includes the debug output trace mechanism and
6833 a much larger code and data size.
6836 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6837 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6839 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6840 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6843 2) iASL Compiler/Disassembler and Tools:
6845 Fixed a problem where the presence of the _OSI predefined control method
6846 within complex expressions could cause an internal compiler error.
6848 AcpiExec: Implemented full region support for multiple address spaces.
6849 SpaceId is now part of the REGION object. BZ 429
6851 ----------------------------------------
6852 11 October 2006. Summary of changes for version 20061011:
6854 1) ACPI CA Core Subsystem:
6856 Completed an AML interpreter performance enhancement for control method
6857 execution. Previously a 2-pass parse/execution, control methods are now
6858 completely parsed and executed in a single pass. This improves overall
6859 interpreter performance by ~25%, reduces code size, and reduces CPU stack
6860 use. (Valery Podrezov + interpreter changes in version 20051202 that
6861 eliminated namespace loading during the pass one parse.)
6863 Implemented _CID support for PCI Root Bridge detection. If the _HID does
6865 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
6867 obtained and also checked for an ID match.
6869 Implemented additional support for the PCI _ADR execution: upsearch until
6871 device scope is found before executing _ADR. This allows PCI_Config
6872 operation regions to be declared locally within control methods
6876 Fixed a problem with a possible race condition between threads executing
6877 AcpiWalkNamespace and the AML interpreter. This condition was removed by
6878 modifying AcpiWalkNamespace to (by default) ignore all temporary
6880 entries created during any concurrent control method execution. An
6881 additional namespace race condition is known to exist between
6882 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
6885 Restructured the AML ParseLoop function, breaking it into several
6886 subfunctions in order to reduce CPU stack use and improve
6890 AcpiGetHandle: Fix for parameter validation to detect invalid
6892 of prefix handle and pathname. BZ 478
6894 Example Code and Data Size: These are the sizes for the OS-independent
6895 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6896 debug version of the code includes the debug output trace mechanism and
6898 a much larger code and data size.
6901 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6902 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6904 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6905 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6907 2) iASL Compiler/Disassembler and Tools:
6909 Ported the -g option (get local ACPI tables) to the new ACPICA Table
6911 to restore original behavior.
6913 ----------------------------------------
6914 27 September 2006. Summary of changes for version 20060927:
6916 1) ACPI CA Core Subsystem:
6918 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
6919 These functions now use a spinlock for mutual exclusion and the interrupt
6920 level indication flag is not needed.
6922 Fixed a problem with the Global Lock where the lock could appear to be
6923 obtained before it is actually obtained. The global lock semaphore was
6924 inadvertently created with one unit instead of zero units. (BZ 464)
6928 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
6930 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
6932 Example Code and Data Size: These are the sizes for the OS-independent
6933 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6934 debug version of the code includes the debug output trace mechanism and
6936 a much larger code and data size.
6939 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6940 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6942 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6943 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6946 2) iASL Compiler/Disassembler and Tools:
6948 Fixed a compilation problem with the pre-defined Resource Descriptor
6950 names where an "object does not exist" error could be incorrectly
6952 if the parent ResourceTemplate pathname places the template within a
6953 different namespace scope than the current scope. (BZ 7212)
6955 Fixed a problem where the compiler could hang after syntax errors
6957 in an ElseIf construct. (BZ 453)
6959 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
6960 operator. An incorrect output filename was produced when this parameter
6962 a null string (""). Now, the original input filename is used as the AML
6963 output filename, with an ".aml" extension.
6965 Implemented a generic batch command mode for the AcpiExec utility
6967 any AML debugger command) (Valery Podrezov).
6969 ----------------------------------------
6970 12 September 2006. Summary of changes for version 20060912:
6972 1) ACPI CA Core Subsystem:
6974 Enhanced the implementation of the "serialized mode" of the interpreter
6975 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
6976 specified, instead of creating a serialization semaphore per control
6978 the interpreter lock is simply no longer released before a blocking
6979 operation during control method execution. This effectively makes the AML
6980 Interpreter single-threaded. The overhead of a semaphore per-method is
6983 Fixed a regression where an error was no longer emitted if a control
6985 attempts to create 2 objects of the same name. This once again returns
6986 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
6988 will dynamically serialize the control method to possible prevent future
6991 Integrated a fix for a problem with PCI Express HID detection in the PCI
6992 Config Space setup procedure. (BZ 7145)
6994 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
6995 AcpiHwInitialize function - the FADT registers are now validated when the
6998 Added two new warnings during FADT verification - 1) if the FADT is
7000 than the largest known FADT version, and 2) if there is a mismatch
7003 32-bit block address and the 64-bit X counterpart (when both are non-
7006 Example Code and Data Size: These are the sizes for the OS-independent
7007 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7008 debug version of the code includes the debug output trace mechanism and
7010 a much larger code and data size.
7013 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7014 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7016 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7017 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7020 2) iASL Compiler/Disassembler and Tools:
7022 Fixed a problem with the implementation of the Switch() operator where
7024 temporary variable was declared too close to the actual Switch, instead
7026 at method level. This could cause a problem if the Switch() operator is
7027 within a while loop, causing an error on the second iteration. (BZ 460)
7029 Disassembler - fix for error emitted for unknown type for target of scope
7030 operator. Now, ignore it and continue.
7032 Disassembly of an FADT now verifies the input FADT and reports any errors
7033 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
7035 Disassembly of raw data buffers with byte initialization data now
7037 each output line with the current buffer offset.
7039 Disassembly of ASF! table now includes all variable-length data fields at
7040 the end of some of the subtables.
7042 The disassembler now emits a comment if a buffer appears to be a
7043 ResourceTemplate, but cannot be disassembled as such because the EndTag
7045 not appear at the very end of the buffer.
7047 AcpiExec - Added the "-t" command line option to enable the serialized
7049 of the AML interpreter.
7051 ----------------------------------------
7052 31 August 2006. Summary of changes for version 20060831:
7054 1) ACPI CA Core Subsystem:
7056 Miscellaneous fixes for the Table Manager:
7057 - Correctly initialize internal common FADT for all 64-bit "X" fields
7058 - Fixed a couple table mapping issues during table load
7059 - Fixed a couple alignment issues for IA64
7060 - Initialize input array to zero in AcpiInitializeTables
7061 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
7064 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
7066 immediately disabled to prevent the waking GPE from firing again and to
7067 prevent other wake GPEs from interrupting the wake process.
7069 Added the AcpiGpeCount global that tracks the number of processed GPEs,
7071 be used for debugging systems with a large number of ACPI interrupts.
7073 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
7074 both the ACPICA headers and the disassembler.
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: 77.8K Code, 16.5K Data, 94.3K Total
7084 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7086 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7087 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7090 2) iASL Compiler/Disassembler and Tools:
7092 Disassembler support for the DMAR ACPI table.
7094 ----------------------------------------
7095 23 August 2006. Summary of changes for version 20060823:
7097 1) ACPI CA Core Subsystem:
7099 The Table Manager component has been completely redesigned and
7100 reimplemented. The new design is much simpler, and reduces the overall
7102 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
7104 now possible to obtain the ACPI tables very early during kernel
7105 initialization, even before dynamic memory management is initialized.
7106 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
7108 Obsolete ACPICA interfaces:
7110 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
7113 - AcpiLoadTable: Not needed.
7114 - AcpiUnloadTable: Not needed.
7116 New ACPICA interfaces:
7118 - AcpiInitializeTables: Must be called before the table manager can be
7120 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
7121 allocated memory after it becomes available.
7122 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
7126 Other ACPICA changes:
7128 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
7130 AcpiOsUnmapMemory to free this mapping.
7131 - AcpiGetTable returns the actual mapped table. The mapping is managed
7132 internally and must not be deleted by the caller. Use of this interface
7133 causes no additional dynamic memory allocation.
7134 - AcpiFindRootPointer: Support for physical addressing has been
7136 it appeared to be unused.
7137 - The interface to AcpiOsMapMemory has changed to be consistent with the
7138 other allocation interfaces.
7139 - The interface to AcpiOsGetRootPointer has changed to eliminate
7142 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
7144 bit platforms. Was previously 64 bits on all platforms.
7145 - The interface to the ACPI Global Lock acquire/release macros have
7147 slightly since ACPICA no longer keeps a local copy of the FACS with a
7148 constructed pointer to the actual global lock.
7150 Porting to the new table manager:
7152 - AcpiInitializeTables: Must be called once, and can be called anytime
7153 during the OS initialization process. It allows the host to specify an
7155 of memory to be used to store the internal version of the RSDT/XSDT (root
7156 table). This allows the host to access ACPI tables before memory
7158 is initialized and running.
7159 - AcpiReallocateRootTable: Can be called after memory management is
7161 to copy the root table to a dynamically allocated array, freeing up the
7162 scratch memory specified in the call to AcpiInitializeTables.
7163 - AcpiSubsystemInitialize: This existing interface is independent of the
7164 Table Manager, and does not have to be called before the Table Manager
7166 be used, it only must be called before the rest of ACPICA can be used.
7167 - ACPI Tables: Some changes have been made to the names and structure of
7169 actbl.h and actbl1.h header files and may require changes to existing
7171 For example, bitfields have been completely removed because of their lack
7173 portability across C compilers.
7174 - Update interfaces to the Global Lock acquire/release macros if local
7175 versions are used. (see acwin.h)
7177 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
7181 Example Code and Data Size: These are the sizes for the OS-independent
7182 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7183 debug version of the code includes the debug output trace mechanism and
7185 a much larger code and data size.
7188 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7189 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7191 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7192 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7195 2) iASL Compiler/Disassembler and Tools:
7197 No changes for this release.
7199 ----------------------------------------
7200 21 July 2006. Summary of changes for version 20060721:
7202 1) ACPI CA Core Subsystem:
7204 The full source code for the ASL test suite used to validate the iASL
7205 compiler and the ACPICA core subsystem is being released with the ACPICA
7206 source for the first time. The source is contained in a separate package
7208 consists of over 1100 files that exercise all ASL/AML operators. The
7210 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
7214 Completed a new design and implementation for support of the ACPI Global
7215 Lock. On the OS side, the global lock is now treated as a standard AML
7216 mutex. Previously, multiple OS threads could "acquire" the global lock
7217 simultaneously. However, this could cause the BIOS to be starved out of
7219 lock - especially in cases such as the Embedded Controller driver where
7220 there is a tight coupling between the OS and the BIOS.
7222 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
7223 The Global Lock interrupt handler no longer queues the execution of a
7224 separate thread to signal the global lock semaphore. Instead, the
7226 is signaled directly from the interrupt handler.
7228 Implemented support within the AML interpreter for package objects that
7229 contain a larger AML length (package list length) than the package
7231 count. In this case, the length of the package is truncated to match the
7232 package element count. Some BIOS code apparently modifies the package
7234 on the fly, and this change supports this behavior. Provides
7236 with the MS AML interpreter. (With assistance from Fiodor Suietov)
7238 Implemented a temporary fix for the BankValue parameter of a Bank Field
7240 support all constant values, now including the Zero and One opcodes.
7241 Evaluation of this parameter must eventually be converted to a full
7243 evaluation. A not-implemented error is now returned (temporarily) for
7245 constant values for this parameter.
7247 Fixed problem reports (Fiodor Suietov) integrated:
7248 - Fix for premature object deletion after CopyObject on Operation Region
7252 Example Code and Data Size: These are the sizes for the OS-independent
7253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7254 debug version of the code includes the debug output trace mechanism and
7256 a much larger code and data size.
7259 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7260 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
7262 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7263 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7266 2) iASL Compiler/Disassembler and Tools:
7268 No changes for this release.
7270 ----------------------------------------
7271 07 July 2006. Summary of changes for version 20060707:
7273 1) ACPI CA Core Subsystem:
7275 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7276 that do not allow the initialization of address pointers within packed
7277 structures - even though the hardware itself may support misaligned
7278 transfers. Some of the debug data structures are packed by default to
7281 Added an error message for the case where AcpiOsGetThreadId() returns
7283 A non-zero value is required by the core ACPICA code to ensure the proper
7284 operation of AML mutexes and recursive control methods.
7286 The DSDT is now the only ACPI table that determines whether the AML
7287 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7289 the hooks for per-table 32/64 switching have been removed from the code.
7291 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7293 Fixed a possible leak of an OwnerID in the error path of
7294 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7295 deletion to a single place in AcpiTbUninstallTable to correct possible
7297 when using the AcpiTbDeleteTablesByType interface (with assistance from
7300 Fixed a problem with Serialized control methods where the semaphore
7301 associated with the method could be over-signaled after multiple method
7304 Fixed two issues with the locking of the internal namespace data
7306 Both the Unload() operator and AcpiUnloadTable interface now lock the
7307 namespace during the namespace deletion associated with the table unload
7308 (with assistance from Linn Crosetto.)
7310 Fixed problem reports (Valery Podrezov) integrated:
7311 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7313 Fixed problem reports (Fiodor Suietov) integrated:
7314 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7315 - On Address Space handler deletion, needless deactivation call (BZ 374)
7316 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7318 - Possible memory leak, Notify sub-objects of Processor, Power,
7321 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7322 - Minimum Length of RSDT should be validated (BZ 379)
7323 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7325 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7329 Example Code and Data Size: These are the sizes for the OS-independent
7330 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7331 debug version of the code includes the debug output trace mechanism and
7333 a much larger code and data size.
7336 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7337 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7339 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7340 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7343 2) iASL Compiler/Disassembler and Tools:
7345 Fixed problem reports:
7346 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7349 ----------------------------------------
7350 23 June 2006. Summary of changes for version 20060623:
7352 1) ACPI CA Core Subsystem:
7354 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7355 allows the type to be customized to the host OS for improved efficiency
7356 (since a spinlock is usually a very small object.)
7358 Implemented support for "ignored" bits in the ACPI registers. According
7360 the ACPI specification, these bits should be preserved when writing the
7361 registers via a read/modify/write cycle. There are 3 bits preserved in
7363 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7365 Implemented the initial deployment of new OSL mutex interfaces. Since
7367 host operating systems have separate mutex and semaphore objects, this
7368 feature was requested. The base code now uses mutexes (and the new mutex
7369 interfaces) wherever a binary semaphore was used previously. However, for
7370 the current release, the mutex interfaces are defined as macros to map
7372 to the existing semaphore interfaces. Therefore, no OSL changes are
7374 at this time. (See acpiosxf.h)
7376 Fixed several problems with the support for the control method SyncLevel
7377 parameter. The SyncLevel now works according to the ACPI specification
7379 in concert with the Mutex SyncLevel parameter, since the current
7381 is a property of the executing thread. Mutual exclusion for control
7383 is now implemented with a mutex instead of a semaphore.
7385 Fixed three instances of the use of the C shift operator in the bitfield
7386 support code (exfldio.c) to avoid the use of a shift value larger than
7388 target data width. The behavior of C compilers is undefined in this case
7390 can cause unpredictable results, and therefore the case must be detected
7392 avoided. (Fiodor Suietov)
7394 Added an info message whenever an SSDT or OEM table is loaded dynamically
7395 via the Load() or LoadTable() ASL operators. This should improve
7397 capability since it will show exactly what tables have been loaded
7399 the tables present in the RSDT/XSDT.)
7401 Example Code and Data Size: These are the sizes for the OS-independent
7402 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7403 debug version of the code includes the debug output trace mechanism and
7405 a much larger code and data size.
7408 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7409 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7411 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7412 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7415 2) iASL Compiler/Disassembler and Tools:
7417 No changes for this release.
7419 ----------------------------------------
7420 08 June 2006. Summary of changes for version 20060608:
7422 1) ACPI CA Core Subsystem:
7424 Converted the locking mutex used for the ACPI hardware to a spinlock.
7426 change should eliminate all problems caused by attempting to acquire a
7427 semaphore at interrupt level, and it means that all ACPICA external
7428 interfaces that directly access the ACPI hardware can be safely called
7430 interrupt level. OSL code that implements the semaphore interfaces should
7432 able to eliminate any workarounds for being called at interrupt level.
7434 Fixed a regression introduced in 20060526 where the ACPI device
7435 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7437 did not have an optional _INI method.
7439 Fixed an IndexField issue where a write to the Data Register should be
7440 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7444 Fixed problem reports (Valery Podrezov) integrated:
7445 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7447 Fixed problem reports (Fiodor Suietov) integrated:
7448 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7450 Removed four global mutexes that were obsolete and were no longer being
7453 Example Code and Data Size: These are the sizes for the OS-independent
7454 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7455 debug version of the code includes the debug output trace mechanism and
7457 a much larger code and data size.
7460 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7461 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7463 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7464 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7467 2) iASL Compiler/Disassembler and Tools:
7469 Fixed a fault when using -g option (get tables from registry) on Windows
7472 Fixed problem reports integrated:
7473 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7474 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7476 - Global table revision override (-r) is ignored (BZ 413)
7478 ----------------------------------------
7479 26 May 2006. Summary of changes for version 20060526:
7481 1) ACPI CA Core Subsystem:
7483 Restructured, flattened, and simplified the internal interfaces for
7484 namespace object evaluation - resulting in smaller code, less CPU stack
7486 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7488 Fixed a problem with the CopyObject operator where the first parameter
7490 not typed correctly for the parser, interpreter, compiler, and
7492 Caused various errors and unexpected behavior.
7494 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7495 produced incorrect results with some C compilers. Since the behavior of C
7496 compilers when the shift value is larger than the datatype width is
7497 apparently not well defined, the interpreter now detects this condition
7499 simply returns zero as expected in all such cases. (BZ 395)
7501 Fixed problem reports (Valery Podrezov) integrated:
7502 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7503 - Allow interpreter to handle nested method declarations (BZ 5361)
7505 Fixed problem reports (Fiodor Suietov) integrated:
7506 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7508 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7510 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7511 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7512 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7513 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7514 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7515 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7516 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7518 - Status of the Global Initialization Handler call not used (BZ 366)
7519 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7521 Example Code and Data Size: These are the sizes for the OS-independent
7522 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7523 debug version of the code includes the debug output trace mechanism and
7525 a much larger code and data size.
7528 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7529 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7531 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7532 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7535 2) iASL Compiler/Disassembler and Tools:
7537 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7538 namespace identifiers with no collision with existing resource descriptor
7539 macro names. This provides compatibility with other ASL compilers and is
7540 most useful for disassembly/recompilation of existing tables without
7542 errors. (With assistance from Thomas Renninger)
7544 Disassembler: fixed an incorrect disassembly problem with the
7545 DataTableRegion and CopyObject operators. Fixed a possible fault during
7546 disassembly of some Alias operators.
7548 ----------------------------------------
7549 12 May 2006. Summary of changes for version 20060512:
7551 1) ACPI CA Core Subsystem:
7553 Replaced the AcpiOsQueueForExecution interface with a new interface named
7554 AcpiOsExecute. The major difference is that the new interface does not
7556 a Priority parameter, this appeared to be useless and has been replaced
7559 Type parameter. The Type tells the host what type of execution is being
7560 requested, such as global lock handler, notify handler, GPE handler, etc.
7561 This allows the host to queue and execute the request as appropriate for
7563 request type, possibly using different work queues and different
7565 for the various request types. This enables fixes for multithreading
7566 deadlock problems such as BZ #5534, and will require changes to all
7568 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7570 Fixed a possible memory leak associated with the support for the so-
7572 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7575 Fixed a problem with the Load() operator where a table load from an
7576 operation region could overwrite an internal table buffer by up to 7
7578 and cause alignment faults on IPF systems. (With assistance from Luming
7581 Example Code and Data Size: These are the sizes for the OS-independent
7582 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7583 debug version of the code includes the debug output trace mechanism and
7585 a much larger code and data size.
7588 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7589 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7591 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7592 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7596 2) iASL Compiler/Disassembler and Tools:
7598 Disassembler: Implemented support to cross reference the internal
7600 and automatically generate ASL External() statements for symbols not
7602 within the current table being disassembled. This will simplify the
7603 disassembly and recompilation of interdependent tables such as SSDTs
7605 these statements will no longer have to be added manually.
7607 Disassembler: Implemented experimental support to automatically detect
7608 invocations of external control methods and generate appropriate
7610 statements. This is problematic because the AML cannot be correctly
7612 until the number of arguments for each control method is known.
7614 standalone method invocations and invocations as the source operand of a
7615 Store() statement are supported.
7617 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7618 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7619 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7620 more readable and likely closer to the original ASL source.
7622 ----------------------------------------
7623 21 April 2006. Summary of changes for version 20060421:
7625 1) ACPI CA Core Subsystem:
7627 Removed a device initialization optimization introduced in 20051216 where
7628 the _STA method was not run unless an _INI was also present for the same
7629 device. This optimization could cause problems because it could allow
7631 methods to be run within a not-present device subtree. (If a not-present
7632 device had no _INI, _STA would not be run, the not-present status would
7634 be discovered, and the children of the device would be incorrectly
7637 Implemented a new _STA optimization where namespace subtrees that do not
7638 contain _INI are identified and ignored during device initialization.
7639 Selectively running _STA can significantly improve boot time on large
7640 machines (with assistance from Len Brown.)
7642 Implemented support for the device initialization case where the returned
7643 _STA flags indicate a device not-present but functioning. In this case,
7645 is not run, but the device children are examined for presence, as per the
7648 Implemented an additional change to the IndexField support in order to
7649 conform to MS behavior. The value written to the Index Register is not
7650 simply a byte offset, it is a byte offset in units of the access width of
7651 the parent Index Field. (Fiodor Suietov)
7653 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7654 interface is called during the creation of all AML operation regions, and
7655 allows the host OS to exert control over what addresses it will allow the
7656 AML code to access. Operation Regions whose addresses are disallowed will
7657 cause a runtime exception when they are actually accessed (will not
7659 or abort table loading.) See oswinxf or osunixxf for an example
7662 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7663 interface allows the host OS to match the various "optional"
7664 interface/behavior strings for the _OSI predefined control method as
7665 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7666 for an example implementation.
7668 Restructured and corrected various problems in the exception handling
7670 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7671 (with assistance from Takayoshi Kochi.)
7673 Modified the Linux source converter to ignore quoted string literals
7675 converting identifiers from mixed to lower case. This will correct
7677 with the disassembler and other areas where such strings must not be
7680 The ACPI_FUNCTION_* macros no longer require quotes around the function
7681 name. This allows the Linux source converter to convert the names, now
7683 the converter ignores quoted strings.
7685 Example Code and Data Size: These are the sizes for the OS-independent
7686 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7687 debug version of the code includes the debug output trace mechanism and
7689 a much larger code and data size.
7693 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7694 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7696 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7697 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7700 2) iASL Compiler/Disassembler and Tools:
7702 Implemented 3 new warnings for iASL, and implemented multiple warning
7706 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7708 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7709 check for the possible timeout, a warning is issued.
7711 2) Useless operators: If an ASL operator does not specify an optional
7713 operand and it also does not use the function return value from the
7714 operator, a warning is issued since the operator effectively does
7717 3) Unreferenced objects: If a namespace object is created, but never
7718 referenced, a warning is issued. This is a warning level 2 since there
7720 cases where this is ok, such as when a secondary table is loaded that
7722 the unreferenced objects. Even so, care is taken to only flag objects
7724 don't look like they will ever be used. For example, the reserved methods
7725 (starting with an underscore) are usually not referenced because it is
7726 expected that the OS will invoke them.
7728 ----------------------------------------
7729 31 March 2006. Summary of changes for version 20060331:
7731 1) ACPI CA Core Subsystem:
7733 Implemented header file support for the following additional ACPI tables:
7734 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
7736 all current and known ACPI tables are now defined in the ACPICA headers
7738 are available for use by device drivers and other software.
7740 Implemented support to allow tables that contain ACPI names with invalid
7741 characters to be loaded. Previously, this would cause the table load to
7742 fail, but since there are several known cases of such tables on existing
7743 machines, this change was made to enable ACPI support for them. Also,
7745 matches the behavior of the Microsoft ACPI implementation.
7747 Fixed a couple regressions introduced during the memory optimization in
7749 20060317 release. The namespace node definition required additional
7750 reorganization and an internal datatype that had been changed to 8-bit
7752 restored to 32-bit. (Valery Podrezov)
7754 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
7755 could be passed through to AcpiOsReleaseObject which is unexpected. Such
7756 null pointers are now trapped and ignored, matching the behavior of the
7757 previous implementation before the deployment of AcpiOsReleaseObject.
7758 (Valery Podrezov, Fiodor Suietov)
7760 Fixed a memory mapping leak during the deletion of a SystemMemory
7762 region where a cached memory mapping was not deleted. This became a
7763 noticeable problem for operation regions that are defined within
7765 used control methods. (Dana Meyers)
7767 Reorganized the ACPI table header files into two main files: one for the
7768 ACPI tables consumed by the ACPICA core, and another for the
7770 ACPI tables that are consumed by the drivers and other software. The
7772 FADT definitions were merged into one common section and three different
7773 tables (ACPI 1.0, 1.0+, and 2.0)
7775 Example Code and Data Size: These are the sizes for the OS-independent
7776 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7777 debug version of the code includes the debug output trace mechanism and
7779 a much larger code and data size.
7782 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7783 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7785 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7786 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7789 2) iASL Compiler/Disassembler and Tools:
7791 Disassembler: Implemented support to decode and format all non-AML ACPI
7792 tables (tables other than DSDTs and SSDTs.) This includes the new tables
7793 added to the ACPICA headers, therefore all current and known ACPI tables
7797 Disassembler: The change to allow ACPI names with invalid characters also
7798 enables the disassembly of such tables. Invalid characters within names
7800 changed to '*' to make the name printable; the iASL compiler will still
7801 generate an error for such names, however, since this is an invalid ACPI
7804 Implemented an option for AcpiXtract (-a) to extract all tables found in
7806 input file. The default invocation extracts only the DSDTs and SSDTs.
7808 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
7809 makefile for the AcpiXtract utility.
7811 ----------------------------------------
7812 17 March 2006. Summary of changes for version 20060317:
7814 1) ACPI CA Core Subsystem:
7816 Implemented the use of a cache object for all internal namespace nodes.
7817 Since there are about 1000 static nodes in a typical system, this will
7818 decrease memory use for cache implementations that minimize per-
7820 overhead (such as a slab allocator.)
7822 Removed the reference count mechanism for internal namespace nodes, since
7824 was deemed unnecessary. This reduces the size of each namespace node by
7825 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
7827 and 32 bytes for the 64-bit case.
7829 Optimized several internal data structures to reduce object size on 64-
7831 platforms by packing data within the 64-bit alignment. This includes the
7832 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
7833 instances corresponding to the namespace objects.
7835 Added two new strings for the predefined _OSI method: "Windows 2001.1
7839 Split the allocation tracking mechanism out to a separate file, from
7840 utalloc.c to uttrack.c. This mechanism appears to be only useful for
7841 application-level code. Kernels may wish to not include uttrack.c in
7844 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
7846 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
7849 Code and Data Size: These are the sizes for the acpica.lib produced by
7851 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7853 driver or OSPM code. The debug version of the code includes the debug
7855 trace mechanism and has a much larger code and data size. Note that these
7856 values will vary depending on the efficiency of the compiler and the
7857 compiler options used during generation.
7860 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7861 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7863 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7864 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7867 2) iASL Compiler/Disassembler and Tools:
7869 Implemented an ANSI C version of the acpixtract utility. This version
7871 automatically extract the DSDT and all SSDTs from the input acpidump text
7872 file and dump the binary output to separate files. It can also display a
7873 summary of the input file including the headers for each table found and
7874 will extract any single ACPI table, with any signature. (See
7875 source/tools/acpixtract)
7877 ----------------------------------------
7878 10 March 2006. Summary of changes for version 20060310:
7880 1) ACPI CA Core Subsystem:
7882 Tagged all external interfaces to the subsystem with the new
7883 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
7885 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
7886 macro. The default definition is NULL.
7888 Added the ACPI_THREAD_ID type for the return value from
7890 This allows the host to define this as necessary to simplify kernel
7891 integration. The default definition is ACPI_NATIVE_UINT.
7893 Fixed two interpreter problems related to error processing, the deletion
7895 objects, and placing invalid pointers onto the internal operator result
7896 stack. BZ 6028, 6151 (Valery Podrezov)
7898 Increased the reference count threshold where a warning is emitted for
7900 reference counts in order to eliminate unnecessary warnings on systems
7902 large namespaces (especially 64-bit.) Increased the value from 0x400 to
7905 Due to universal disagreement as to the meaning of the 'c' in the
7907 function, the ACPI_MEM_CALLOCATE macro has been renamed to
7908 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
7909 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
7912 Code and Data Size: These are the sizes for the acpica.lib produced by
7914 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7916 driver or OSPM code. The debug version of the code includes the debug
7918 trace mechanism and has a much larger code and data size. Note that these
7919 values will vary depending on the efficiency of the compiler and the
7920 compiler options used during generation.
7923 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7924 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7926 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7927 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7930 2) iASL Compiler/Disassembler:
7932 Disassembler: implemented support for symbolic resource descriptor
7933 references. If a CreateXxxxField operator references a fixed offset
7936 resource descriptor, a name is assigned to the descriptor and the offset
7938 translated to the appropriate resource tag and pathname. The addition of
7939 this support brings the disassembled code very close to the original ASL
7940 source code and helps eliminate run-time errors when the disassembled
7942 is modified (and recompiled) in such a way as to invalidate the original
7945 Implemented support for a Descriptor Name as the last parameter to the
7947 Register() macro. This parameter was inadvertently left out of the ACPI
7948 specification, and will be added for ACPI 3.0b.
7950 Fixed a problem where the use of the "_OSI" string (versus the full path
7951 "\_OSI") caused an internal compiler error. ("No back ptr to op")
7953 Fixed a problem with the error message that occurs when an invalid string
7955 used for a _HID object (such as one with an embedded asterisk:
7957 The correct message is now displayed.
7959 ----------------------------------------
7960 17 February 2006. Summary of changes for version 20060217:
7962 1) ACPI CA Core Subsystem:
7964 Implemented a change to the IndexField support to match the behavior of
7966 Microsoft AML interpreter. The value written to the Index register is now
7968 byte offset, no longer an index based upon the width of the Data
7970 This should fix IndexField problems seen on some machines where the Data
7971 register is not exactly one byte wide. The ACPI specification will be
7972 clarified on this point.
7974 Fixed a problem where several resource descriptor types could overrun the
7975 internal descriptor buffer due to size miscalculation: VendorShort,
7976 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
7977 affect all platforms.
7979 Fixed a problem where individual resource descriptors were misaligned
7981 the internal buffer, causing alignment faults on IA64 platforms.
7983 Code and Data Size: These are the sizes for the acpica.lib produced by
7985 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7987 driver or OSPM code. The debug version of the code includes the debug
7989 trace mechanism and has a much larger code and data size. Note that these
7990 values will vary depending on the efficiency of the compiler and the
7991 compiler options used during generation.
7994 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7995 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7997 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7998 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8001 2) iASL Compiler/Disassembler:
8003 Implemented support for new reserved names: _WDG and _WED are Microsoft
8004 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
8005 defined method (Throttling Depth Limit.)
8007 Fixed a problem where a zero-length VendorShort or VendorLong resource
8008 descriptor was incorrectly emitted as a descriptor of length one.
8010 ----------------------------------------
8011 10 February 2006. Summary of changes for version 20060210:
8013 1) ACPI CA Core Subsystem:
8015 Removed a couple of extraneous ACPI_ERROR messages that appeared during
8016 normal execution. These became apparent after the conversion from
8019 Fixed a problem where the CreateField operator could hang if the BitIndex
8021 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
8023 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
8024 failed with an exception. This also fixes a couple of related RefOf and
8025 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
8027 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
8029 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
8033 Implemented a memory cleanup at the end of the execution of each
8035 of an AML While() loop, preventing the accumulation of outstanding
8037 (Valery Podrezov, BZ 5427)
8039 Eliminated a chunk of duplicate code in the object resolution code.
8043 Fixed several warnings during the 64-bit code generation.
8045 The AcpiSrc source code conversion tool now inserts one line of
8047 after an if() statement that is followed immediately by a comment,
8049 readability of the Linux code.
8051 Code and Data Size: The current and previous library sizes for the core
8052 subsystem are shown below. These are the code and data sizes for the
8053 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8055 values do not include any ACPI driver or OSPM code. The debug version of
8057 code includes the debug output trace mechanism and has a much larger code
8058 and data size. Note that these values will vary depending on the
8060 of the compiler and the compiler options used during generation.
8063 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8064 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8066 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8067 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8070 2) iASL Compiler/Disassembler:
8072 Fixed a problem with the disassembly of a BankField operator with a
8074 expression for the BankValue parameter.
8076 ----------------------------------------
8077 27 January 2006. Summary of changes for version 20060127:
8079 1) ACPI CA Core Subsystem:
8081 Implemented support in the Resource Manager to allow unresolved
8083 references within resource package objects for the _PRT method. This
8085 is in addition to the previously implemented unresolved reference support
8086 within the AML parser. If the interpreter slack mode is enabled, these
8087 unresolved references will be passed through to the caller as a NULL
8091 Implemented and deployed new macros and functions for error and warning
8092 messages across the subsystem. These macros are simpler and generate less
8093 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
8094 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
8095 macros remain defined to allow ACPI drivers time to migrate to the new
8098 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
8100 Acquire/Release Lock OSL interfaces.
8102 Fixed a problem where Alias ASL operators are sometimes not correctly
8103 resolved, in both the interpreter and the iASL compiler.
8105 Fixed several problems with the implementation of the
8106 ConcatenateResTemplate
8107 ASL operator. As per the ACPI specification, zero length buffers are now
8108 treated as a single EndTag. One-length buffers always cause a fatal
8109 exception. Non-zero length buffers that do not end with a full 2-byte
8111 cause a fatal exception.
8113 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
8114 interface. (With assistance from Thomas Renninger)
8116 Code and Data Size: The current and previous library sizes for the core
8117 subsystem are shown below. These are the code and data sizes for the
8118 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8120 values do not include any ACPI driver or OSPM code. The debug version of
8122 code includes the debug output trace mechanism and has a much larger code
8123 and data size. Note that these values will vary depending on the
8125 of the compiler and the compiler options used during generation.
8128 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8129 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8131 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8132 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8135 2) iASL Compiler/Disassembler:
8137 Fixed an internal error that was generated for any forward references to
8141 ----------------------------------------
8142 13 January 2006. Summary of changes for version 20060113:
8144 1) ACPI CA Core Subsystem:
8146 Added 2006 copyright to all module headers and signons. This affects
8147 virtually every file in the ACPICA core subsystem, iASL compiler, and the
8150 Enhanced the ACPICA error reporting in order to simplify user migration
8152 the non-debug version of ACPICA. Replaced all instances of the
8153 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
8155 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
8156 respectively. This preserves all error and warning messages in the non-
8158 version of the ACPICA code (this has been referred to as the "debug lite"
8159 option.) Over 200 cases were converted to create a total of over 380
8160 error/warning messages across the ACPICA code. This increases the code
8162 data size of the default non-debug version of the code somewhat (about
8164 but all error/warning reporting may be disabled if desired (and code
8165 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
8166 configuration option. The size of the debug version of ACPICA remains
8170 Fixed a memory leak within the AML Debugger "Set" command. One object was
8171 not properly deleted for every successful invocation of the command.
8173 Code and Data Size: The current and previous library sizes for the core
8174 subsystem are shown below. These are the code and data sizes for the
8175 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8177 values do not include any ACPI driver or OSPM code. The debug version of
8179 code includes the debug output trace mechanism and has a much larger code
8180 and data size. Note that these values will vary depending on the
8182 of the compiler and the compiler options used during generation.
8185 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8186 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8188 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8189 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8192 2) iASL Compiler/Disassembler:
8194 The compiler now officially supports the ACPI 3.0a specification that was
8195 released on December 30, 2005. (Specification is available at
8198 ----------------------------------------
8199 16 December 2005. Summary of changes for version 20051216:
8201 1) ACPI CA Core Subsystem:
8203 Implemented optional support to allow unresolved names within ASL Package
8204 objects. A null object is inserted in the package when a named reference
8205 cannot be located in the current namespace. Enabled via the interpreter
8206 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
8208 that contain such code.
8210 Implemented an optimization to the initialization sequence that can
8212 boot time. During ACPI device initialization, the _STA method is now run
8214 and only if the _INI method exists. The _STA method is used to determine
8216 the device is present; An _INI can only be run if _STA returns present,
8218 it is a waste of time to run the _STA method if the _INI does not exist.
8219 (Prototype and assistance from Dong Wei)
8221 Implemented use of the C99 uintptr_t for the pointer casting macros if it
8223 available in the current compiler. Otherwise, the default (void *) cast
8227 Fixed some possible memory leaks found within the execution path of the
8228 Break, Continue, If, and CreateField operators. (Valery Podrezov)
8230 Fixed a problem introduced in the 20051202 release where an exception is
8231 generated during method execution if a control method attempts to declare
8234 Moved resource descriptor string constants that are used by both the AML
8235 disassembler and AML debugger to the common utilities directory so that
8236 these components are independent.
8238 Implemented support in the AcpiExec utility (-e switch) to globally
8240 exceptions during control method execution (method is not aborted.)
8242 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
8245 Code and Data Size: The current and previous library sizes for the core
8246 subsystem are shown below. These are the code and data sizes for the
8247 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8249 values do not include any ACPI driver or OSPM code. The debug version of
8251 code includes the debug output trace mechanism and has a much larger code
8252 and data size. Note that these values will vary depending on the
8254 of the compiler and the compiler options used during generation.
8257 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8258 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8260 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8261 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8264 2) iASL Compiler/Disassembler:
8266 Fixed a problem where a CPU stack overflow fault could occur if a
8268 method call was made from within a Return statement.
8270 ----------------------------------------
8271 02 December 2005. Summary of changes for version 20051202:
8273 1) ACPI CA Core Subsystem:
8275 Modified the parsing of control methods to no longer create namespace
8276 objects during the first pass of the parse. Objects are now created only
8277 during the execute phase, at the moment the namespace creation operator
8279 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8281 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8282 reentrant control methods are protected by an AML mutex. The mutex will
8284 correctly block multiple threads from attempting to create the same
8288 Increased the number of available Owner Ids for namespace object tracking
8289 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8291 some machines with a large number of ACPI tables (either static or
8294 Fixed a problem with the AcpiExec utility where a fault could occur when
8296 -b switch (batch mode) is used.
8298 Enhanced the namespace dump routine to output the owner ID for each
8301 Code and Data Size: The current and previous library sizes for the core
8302 subsystem are shown below. These are the code and data sizes for the
8303 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8305 values do not include any ACPI driver or OSPM code. The debug version of
8307 code includes the debug output trace mechanism and has a much larger code
8308 and data size. Note that these values will vary depending on the
8310 of the compiler and the compiler options used during generation.
8313 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8314 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8316 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8317 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8320 2) iASL Compiler/Disassembler:
8322 Fixed a parse error during compilation of certain Switch/Case constructs.
8324 simplify the parse, the grammar now allows for multiple Default
8326 and this error is now detected and flagged during the analysis phase.
8328 Disassembler: The disassembly now includes the contents of the original
8329 table header within a comment at the start of the file. This includes the
8330 name and version of the original ASL compiler.
8332 ----------------------------------------
8333 17 November 2005. Summary of changes for version 20051117:
8335 1) ACPI CA Core Subsystem:
8337 Fixed a problem in the AML parser where the method thread count could be
8338 decremented below zero if any errors occurred during the method parse
8340 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8342 This also fixed a related regression with the mechanism that detects and
8343 corrects methods that cannot properly handle reentrancy (related to the
8344 deployment of the new OwnerId mechanism.)
8346 Eliminated the pre-parsing of control methods (to detect errors) during
8347 table load. Related to the problem above, this was causing unwind issues
8349 any errors occurred during the parse, and it seemed to be overkill. A
8351 load should not be aborted if there are problems with any single control
8352 method, thus rendering this feature rather pointless.
8354 Fixed a problem with the new table-driven resource manager where an
8356 buffer overflow could occur for small resource templates.
8358 Implemented a new external interface, AcpiGetVendorResource. This
8360 will find and return a vendor-defined resource descriptor within a _CRS
8362 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8365 Removed the length limit (200) on string objects as per the upcoming ACPI
8366 3.0A specification. This affects the following areas of the interpreter:
8368 any implicit conversion of a Buffer to a String, 2) a String object
8370 of the ASL Concatentate operator, 3) the String object result of the ASL
8373 Fixed a problem in the Windows OS interface layer (OSL) where a
8375 on a semaphore object would incorrectly timeout. This allows the
8376 multithreading features of the AcpiExec utility to work properly under
8379 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8380 the recently added file named "utresrc.c".
8382 Code and Data Size: The current and previous library sizes for the core
8383 subsystem are shown below. These are the code and data sizes for the
8384 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8386 values do not include any ACPI driver or OSPM code. The debug version of
8388 code includes the debug output trace mechanism and has a much larger code
8389 and data size. Note that these values will vary depending on the
8391 of the compiler and the compiler options used during generation.
8394 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8395 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8397 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8398 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8401 2) iASL Compiler/Disassembler:
8403 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8404 specification. For the iASL compiler, this means that string literals
8406 the source ASL can be of any length.
8408 Enhanced the listing output to dump the AML code for resource descriptors
8409 immediately after the ASL code for each descriptor, instead of in a block
8411 the end of the entire resource template.
8413 Enhanced the compiler debug output to dump the entire original parse tree
8414 constructed during the parse phase, before any transforms are applied to
8416 tree. The transformed tree is dumped also.
8418 ----------------------------------------
8419 02 November 2005. Summary of changes for version 20051102:
8421 1) ACPI CA Core Subsystem:
8423 Modified the subsystem initialization sequence to improve GPE support.
8425 GPE initialization has been split into two parts in order to defer
8427 of the _PRW methods (Power Resources for Wake) until after the hardware
8429 fully initialized and the SCI handler is installed. This allows the _PRW
8430 methods to access fields protected by the Global Lock. This will fix
8432 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8434 Converted the ACPI internal object disassemble and display code within
8436 AML debugger to fully table-driven operation, reducing code size and
8437 increasing maintainability.
8439 Fixed a regression with the ConcatenateResTemplate() ASL operator
8441 in the 20051021 release.
8443 Implemented support for "local" internal ACPI object types within the
8444 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8445 These local types include RegionFields, BankFields, IndexFields, Alias,
8449 Moved common AML resource handling code into a new file, "utresrc.c".
8451 code is shared by both the Resource Manager and the AML Debugger.
8453 Code and Data Size: The current and previous library sizes for the core
8454 subsystem are shown below. These are the code and data sizes for the
8455 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8457 values do not include any ACPI driver or OSPM code. The debug version of
8459 code includes the debug output trace mechanism and has a much larger code
8460 and data size. Note that these values will vary depending on the
8462 of the compiler and the compiler options used during generation.
8465 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8466 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8468 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8469 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8472 2) iASL Compiler/Disassembler:
8474 Fixed a problem with very large initializer lists (more than 4000
8476 for both Buffer and Package objects where the parse stack could overflow.
8478 Enhanced the pre-compile source code scan for non-ASCII characters to
8480 characters within comment fields. The scan is now always performed and is
8482 longer optional, detecting invalid characters within a source file
8483 immediately rather than during the parse phase or later.
8485 Enhanced the ASL grammar definition to force early reductions on all
8487 style grammar elements so that the overall parse stack usage is greatly
8488 reduced. This should improve performance and reduce the possibility of
8492 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8494 with the addition of a %expected statement, the compiler generates from
8495 source with no warnings.
8497 Fixed a possible segment fault in the disassembler if the input filename
8498 does not contain a "dot" extension (Thomas Renninger).
8500 ----------------------------------------
8501 21 October 2005. Summary of changes for version 20051021:
8503 1) ACPI CA Core Subsystem:
8505 Implemented support for the EM64T and other x86-64 processors. This
8506 essentially entails recognizing that these processors support non-aligned
8507 memory transfers. Previously, all 64-bit processors were assumed to lack
8508 hardware support for non-aligned transfers.
8510 Completed conversion of the Resource Manager to nearly full table-driven
8511 operation. Specifically, the resource conversion code (convert AML to
8512 internal format and the reverse) and the debug code to dump internal
8513 resource descriptors are fully table-driven, reducing code and data size
8515 improving maintainability.
8517 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8519 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8521 Alexey Starikovskiy)
8523 Implemented support within the resource conversion code for the Type-
8524 Specific byte within the various ACPI 3.0 *WordSpace macros.
8526 Fixed some issues within the resource conversion code for the type-
8528 flags for both Memory and I/O address resource descriptors. For Memory,
8529 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8530 TTP flags into two separate fields.
8532 Code and Data Size: The current and previous library sizes for the core
8533 subsystem are shown below. These are the code and data sizes for the
8534 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8536 values do not include any ACPI driver or OSPM code. The debug version of
8538 code includes the debug output trace mechanism and has a much larger code
8539 and data size. Note that these values will vary depending on the
8541 of the compiler and the compiler options used during generation.
8544 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8545 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8547 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8548 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8552 2) iASL Compiler/Disassembler:
8554 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8556 corresponding ResourceSource string was not also present in a resource
8557 descriptor declaration. This restriction caused problems with existing
8558 AML/ASL code that includes the Index byte without the string. When such
8560 was disassembled, it could not be compiled without modification. Further,
8561 the modified code created a resource template with a different size than
8563 original, breaking code that used fixed offsets into the resource
8567 Removed a recent feature of the disassembler to ignore a lone
8569 byte. This byte is now emitted if present so that the exact AML can be
8570 reproduced when the disassembled code is recompiled.
8572 Improved comments and text alignment for the resource descriptor code
8573 emitted by the disassembler.
8575 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8577 Register() resource descriptor.
8579 ----------------------------------------
8580 30 September 2005. Summary of changes for version 20050930:
8582 1) ACPI CA Core Subsystem:
8584 Completed a major overhaul of the Resource Manager code - specifically,
8585 optimizations in the area of the AML/internal resource conversion code.
8587 code has been optimized to simplify and eliminate duplicated code, CPU
8589 use has been decreased by optimizing function parameters and local
8590 variables, and naming conventions across the manager have been
8592 for clarity and ease of maintenance (this includes function, parameter,
8593 variable, and struct/typedef names.) The update may force changes in some
8594 driver code, depending on how resources are handled by the host OS.
8596 All Resource Manager dispatch and information tables have been moved to a
8597 single location for clarity and ease of maintenance. One new file was
8598 created, named "rsinfo.c".
8600 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8601 guarantee that the argument is not evaluated twice, making them less
8603 to macro side-effects. However, since there exists the possibility of
8604 additional stack use if a particular compiler cannot optimize them (such
8606 in the debug generation case), the original macros are optionally
8608 Note that some invocations of the return_VALUE macro may now cause size
8609 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8611 eliminate these. (From Randy Dunlap)
8613 Implemented a new mechanism to enable debug tracing for individual
8615 methods. A new external interface, AcpiDebugTrace, is provided to enable
8616 this mechanism. The intent is to allow the host OS to easily enable and
8617 disable tracing for problematic control methods. This interface can be
8618 easily exposed to a user or debugger interface if desired. See the file
8619 psxface.c for details.
8621 AcpiUtCallocate will now return a valid pointer if a length of zero is
8622 specified - a length of one is used and a warning is issued. This matches
8623 the behavior of AcpiUtAllocate.
8625 Code and Data Size: The current and previous library sizes for the core
8626 subsystem are shown below. These are the code and data sizes for the
8627 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8629 values do not include any ACPI driver or OSPM code. The debug version of
8631 code includes the debug output trace mechanism and has a much larger code
8632 and data size. Note that these values will vary depending on the
8634 of the compiler and the compiler options used during generation.
8637 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8638 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8640 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8641 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8644 2) iASL Compiler/Disassembler:
8646 A remark is issued if the effective compile-time length of a package or
8647 buffer is zero. Previously, this was a warning.
8649 ----------------------------------------
8650 16 September 2005. Summary of changes for version 20050916:
8652 1) ACPI CA Core Subsystem:
8654 Fixed a problem within the Resource Manager where support for the Generic
8655 Register descriptor was not fully implemented. This descriptor is now
8657 recognized, parsed, disassembled, and displayed.
8659 Completely restructured the Resource Manager code to utilize table-driven
8660 dispatch and lookup, eliminating many of the large switch() statements.
8662 reduces overall subsystem code size and code complexity. Affects the
8663 resource parsing and construction, disassembly, and debug dump output.
8665 Cleaned up and restructured the debug dump output for all resource
8666 descriptors. Improved readability of the output and reduced code size.
8668 Fixed a problem where changes to internal data structures caused the
8669 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8671 Code and Data Size: The current and previous library sizes for the core
8672 subsystem are shown below. These are the code and data sizes for the
8673 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8675 values do not include any ACPI driver or OSPM code. The debug version of
8677 code includes the debug output trace mechanism and has a much larger code
8678 and data size. Note that these values will vary depending on the
8680 of the compiler and the compiler options used during generation.
8683 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8684 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8686 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8687 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8690 2) iASL Compiler/Disassembler:
8692 Updated the disassembler to automatically insert an EndDependentFn()
8694 into the ASL stream if this macro is missing in the original AML code,
8695 simplifying compilation of the resulting ASL module.
8697 Fixed a problem in the disassembler where a disassembled ResourceSource
8698 string (within a large resource descriptor) was not surrounded by quotes
8700 not followed by a comma, causing errors when the resulting ASL module was
8701 compiled. Also, escape sequences within a ResourceSource string are now
8702 handled correctly (especially "\\")
8704 ----------------------------------------
8705 02 September 2005. Summary of changes for version 20050902:
8707 1) ACPI CA Core Subsystem:
8709 Fixed a problem with the internal Owner ID allocation and deallocation
8710 mechanisms for control method execution and recursive method invocation.
8711 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
8712 messages seen on some systems. Recursive method invocation depth is
8713 currently limited to 255. (Alexey Starikovskiy)
8715 Completely eliminated all vestiges of support for the "module-level
8716 executable code" until this support is fully implemented and debugged.
8718 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
8719 some systems that invoke this support.
8721 Fixed a problem within the resource manager code where the transaction
8723 for a 64-bit address descriptor were handled incorrectly in the type-
8726 Consolidated duplicate code within the address descriptor resource
8728 code, reducing overall subsystem code size.
8730 Fixed a fault when using the AML debugger "disassemble" command to
8731 disassemble individual control methods.
8733 Removed references to the "release_current" directory within the Unix
8736 Code and Data Size: The current and previous core subsystem library sizes
8737 are shown below. These are the code and data sizes for the acpica.lib
8738 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
8739 include any ACPI driver or OSPM code. The debug version of the code
8741 the debug output trace mechanism and has a much larger code and data
8743 Note that these values will vary depending on the efficiency of the
8745 and the compiler options used during generation.
8748 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8749 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8751 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8752 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8755 2) iASL Compiler/Disassembler:
8757 Implemented an error check for illegal duplicate values in the interrupt
8759 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
8762 Implemented error checking for the Irq() and IrqNoFlags() macros to
8764 too many values in the interrupt list (16 max) and invalid values in the
8767 The maximum length string literal within an ASL file is now restricted to
8768 200 characters as per the ACPI specification.
8770 Fixed a fault when using the -ln option (generate namespace listing).
8772 Implemented an error check to determine if a DescriptorName within a
8773 resource descriptor has already been used within the current scope.
8775 ----------------------------------------
8776 15 August 2005. Summary of changes for version 20050815:
8778 1) ACPI CA Core Subsystem:
8780 Implemented a full bytewise compare to determine if a table load request
8782 attempting to load a duplicate table. The compare is performed if the
8784 signatures and table lengths match. This will allow different tables with
8785 the same OEM Table ID and revision to be loaded - probably against the
8787 specification, but discovered in the field nonetheless.
8789 Added the changes.txt logfile to each of the zipped release packages.
8791 Code and Data Size: Current and previous core subsystem library sizes are
8792 shown below. These are the code and data sizes for the acpica.lib
8794 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8795 any ACPI driver or OSPM code. The debug version of the code includes the
8796 debug output trace mechanism and has a much larger code and data size.
8798 that these values will vary depending on the efficiency of the compiler
8800 the compiler options used during generation.
8803 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8804 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8806 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8807 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8810 2) iASL Compiler/Disassembler:
8812 Fixed a problem where incorrect AML code could be generated for Package
8813 objects if optimization is disabled (via the -oa switch).
8815 Fixed a problem with where incorrect AML code is generated for variable-
8816 length packages when the package length is not specified and the number
8818 initializer values is greater than 255.
8821 ----------------------------------------
8822 29 July 2005. Summary of changes for version 20050729:
8824 1) ACPI CA Core Subsystem:
8826 Implemented support to ignore an attempt to install/load a particular
8828 table more than once. Apparently there exists BIOS code that repeatedly
8829 attempts to load the same SSDT upon certain events. With assistance from
8830 Venkatesh Pallipadi.
8832 Restructured the main interface to the AML parser in order to correctly
8833 handle all exceptional conditions. This will prevent leakage of the
8835 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
8837 machines. With assistance from Alexey Starikovskiy.
8839 Support for "module level code" has been disabled in this version due to
8841 number of issues that have appeared on various machines. The support can
8843 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
8844 compilation. When the issues are fully resolved, the code will be enabled
8848 Modified the internal functions for debug print support to define the
8849 FunctionName parameter as a (const char *) for compatibility with
8851 built-in macros such as __FUNCTION__, etc.
8853 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
8855 Implemented support to display an object count summary for the AML
8857 commands Object and Methods.
8859 Code and Data Size: Current and previous core subsystem library sizes are
8860 shown below. These are the code and data sizes for the acpica.lib
8862 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8863 any ACPI driver or OSPM code. The debug version of the code includes the
8864 debug output trace mechanism and has a much larger code and data size.
8866 that these values will vary depending on the efficiency of the compiler
8868 the compiler options used during generation.
8871 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8872 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8874 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8875 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8878 2) iASL Compiler/Disassembler:
8880 Fixed a regression that appeared in the 20050708 version of the compiler
8881 where an error message was inadvertently emitted for invocations of the
8883 reserved control method.
8885 ----------------------------------------
8886 08 July 2005. Summary of changes for version 20050708:
8888 1) ACPI CA Core Subsystem:
8890 The use of the CPU stack in the debug version of the subsystem has been
8891 considerably reduced. Previously, a debug structure was declared in every
8892 function that used the debug macros. This structure has been removed in
8893 favor of declaring the individual elements as parameters to the debug
8894 functions. This reduces the cumulative stack use during nested execution
8896 ACPI function calls at the cost of a small increase in the code size of
8898 debug version of the subsystem. With assistance from Alexey Starikovskiy
8902 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
8903 headers to define a macro that will return the current function name at
8904 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
8906 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
8907 compiler-dependent header, the function name is saved on the CPU stack
8909 pointer per function.) This mechanism is used because apparently there
8910 exists no standard ANSI-C defined macro that that returns the function
8913 Redesigned and reimplemented the "Owner ID" mechanism used to track
8914 namespace objects created/deleted by ACPI tables and control method
8915 execution. A bitmap is now used to allocate and free the IDs, thus
8917 the wraparound problem present in the previous implementation. The size
8919 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
8922 Removed the UINT32_BIT and UINT16_BIT types that were used for the
8924 flag definitions within the headers for the predefined ACPI tables. These
8925 have been replaced by UINT8_BIT in order to increase the code portability
8927 the subsystem. If the use of UINT8 remains a problem, we may be forced to
8928 eliminate bitfields entirely because of a lack of portability.
8930 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
8932 is a frequently used function and this improvement increases the
8934 of the entire subsystem (Alexey Starikovskiy).
8936 Fixed several possible memory leaks and the inverse - premature object
8937 deletion (Alexey Starikovskiy).
8939 Code and Data Size: Current and previous core subsystem library sizes are
8940 shown below. These are the code and data sizes for the acpica.lib
8942 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8943 any ACPI driver or OSPM code. The debug version of the code includes the
8944 debug output trace mechanism and has a much larger code and data size.
8946 that these values will vary depending on the efficiency of the compiler
8948 the compiler options used during generation.
8951 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8952 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8954 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8955 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8957 ----------------------------------------
8958 24 June 2005. Summary of changes for version 20050624:
8960 1) ACPI CA Core Subsystem:
8962 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
8963 the host-defined cache object. This allows the OSL implementation to
8965 and type this object in any manner desired, simplifying the OSL
8966 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
8967 Linux, and should be defined in the OS-specific header file for other
8968 operating systems as required.
8970 Changed the interface to AcpiOsAcquireObject to directly return the
8971 requested object as the function return (instead of ACPI_STATUS.) This
8972 change was made for performance reasons, since this is the purpose of the
8973 interface in the first place. AcpiOsAcquireObject is now similar to the
8974 AcpiOsAllocate interface.
8976 Implemented a new AML debugger command named Businfo. This command
8978 information about all devices that have an associate _PRT object. The
8980 _HID, _UID, and _CID are displayed for these devices.
8982 Modified the initialization sequence in AcpiInitializeSubsystem to call
8984 OSL interface AcpiOslInitialize first, before any local initialization.
8986 change was required because the global initialization now calls OSL
8989 Enhanced the Dump command to display the entire contents of Package
8991 (including all sub-objects and their values.)
8993 Restructured the code base to split some files because of size and/or
8994 because the code logically belonged in a separate file. New files are
8996 below. All makefiles and project files included in the ACPI CA release
8999 utilities/utcache.c /* Local cache interfaces */
9000 utilities/utmutex.c /* Local mutex support */
9001 utilities/utstate.c /* State object support */
9002 interpreter/parser/psloop.c /* Main AML parse loop */
9004 Code and Data Size: Current and previous core subsystem library sizes are
9005 shown below. These are the code and data sizes for the acpica.lib
9007 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9008 any ACPI driver or OSPM code. The debug version of the code includes the
9009 debug output trace mechanism and has a much larger code and data size.
9011 that these values will vary depending on the efficiency of the compiler
9013 the compiler options used during generation.
9016 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9017 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9019 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9020 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9023 2) iASL Compiler/Disassembler:
9025 Fixed a regression introduced in version 20050513 where the use of a
9027 object within a Case() statement caused a compile time exception. The
9028 original behavior has been restored (a Match() operator is emitted.)
9030 ----------------------------------------
9031 17 June 2005. Summary of changes for version 20050617:
9033 1) ACPI CA Core Subsystem:
9035 Moved the object cache operations into the OS interface layer (OSL) to
9037 the host OS to handle these operations if desired (for example, the Linux
9038 OSL will invoke the slab allocator). This support is optional; the
9040 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
9042 code in the ACPI CA core. The new OSL interfaces are shown below. See
9043 utalloc.c for an example implementation, and acpiosxf.h for the exact
9044 interface definitions. With assistance from Alexey Starikovskiy.
9051 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
9053 and restore a flags parameter. This fits better with many OS lock models.
9054 Note: the current execution state (interrupt handler or not) is no longer
9055 passed to these interfaces. If necessary, the OSL must determine this
9057 by itself, a simple and fast operation. With assistance from Alexey
9060 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
9061 present if the revision of the RSDP was 2 or greater. According to the
9063 specification, the XSDT is optional in all cases, and the table manager
9064 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
9065 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
9069 Fixed an interpreter problem with the Mid() operator in the case of an
9071 string where the resulting output string is of zero length. It now
9073 returns a valid, null terminated string object instead of a string object
9074 with a null pointer.
9076 Fixed a problem with the control method argument handling to allow a
9078 to an Arg object that already contains an object of type Device. The
9080 object is now correctly overwritten. Previously, an error was returned.
9083 Enhanced the debugger Find command to emit object values in addition to
9085 found object pathnames. The output format is the same as the dump
9089 Enhanced the debugger Set command. It now has the ability to set the
9091 of any Named integer object in the namespace (Previously, only method
9093 and args could be set.)
9095 Code and Data Size: Current and previous core subsystem library sizes are
9096 shown below. These are the code and data sizes for the acpica.lib
9098 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9099 any ACPI driver or OSPM code. The debug version of the code includes the
9100 debug output trace mechanism and has a much larger code and data size.
9102 that these values will vary depending on the efficiency of the compiler
9104 the compiler options used during generation.
9107 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9108 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9110 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9111 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9114 2) iASL Compiler/Disassembler:
9116 Fixed a regression in the disassembler where if/else/while constructs
9118 output incorrectly. This problem was introduced in the previous release
9119 (20050526). This problem also affected the single-step disassembly in the
9122 Fixed a problem where compiling the reserved _OSI method would randomly
9124 rarely) produce compile errors.
9126 Enhanced the disassembler to emit compilable code in the face of
9128 AML resource descriptors. If the optional ResourceSourceIndex is present,
9129 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
9130 disassembly. Otherwise, the resulting code cannot be compiled without
9133 ----------------------------------------
9134 26 May 2005. Summary of changes for version 20050526:
9136 1) ACPI CA Core Subsystem:
9138 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
9139 the module level (not within a control method.) These opcodes are
9141 exactly once at the time the table is loaded. This type of code was legal
9143 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
9145 order to provide backwards compatibility with earlier BIOS
9147 This eliminates the "Encountered executable code at module level" warning
9148 that was previously generated upon detection of such code.
9150 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
9151 inadvertently be generated during the lookup of namespace objects in the
9152 second pass parse of ACPI tables and control methods. It appears that
9154 problem could occur during the resolution of forward references to
9158 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
9159 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
9160 allows the deadlock detection debug code to be compiled out in the normal
9161 case, improving mutex performance (and overall subsystem performance)
9164 Implemented a handful of miscellaneous fixes for possible memory leaks on
9165 error conditions and error handling control paths. These fixes were
9166 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
9168 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
9170 to prevent a fault in this error case.
9172 Code and Data Size: Current and previous core subsystem library sizes are
9173 shown below. These are the code and data sizes for the acpica.lib
9175 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9176 any ACPI driver or OSPM code. The debug version of the code includes the
9177 debug output trace mechanism and has a much larger code and data size.
9179 that these values will vary depending on the efficiency of the compiler
9181 the compiler options used during generation.
9184 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9185 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9187 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9188 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9191 2) iASL Compiler/Disassembler:
9193 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
9194 the module level (not within a control method.) These operators will be
9195 executed once at the time the table is loaded. This type of code was
9197 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
9198 compiler in order to provide backwards compatibility with earlier BIOS
9202 The ACPI integer width (specified via the table revision ID or the -r
9203 override, 32 or 64 bits) is now used internally during compile-time
9205 folding to ensure that constants are truncated to 32 bits if necessary.
9206 Previously, the revision ID value was only emitted in the AML table
9209 An error message is now generated for the Mutex and Method operators if
9211 SyncLevel parameter is outside the legal range of 0 through 15.
9213 Fixed a problem with the Method operator ParameterTypes list handling
9215 3.0). Previously, more than 2 types or 2 arguments generated a syntax
9217 The actual underlying implementation of method argument typechecking is
9218 still under development, however.
9220 ----------------------------------------
9221 13 May 2005. Summary of changes for version 20050513:
9223 1) ACPI CA Core Subsystem:
9225 Implemented support for PCI Express root bridges -- added support for
9227 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
9229 The interpreter now automatically truncates incoming 64-bit constants to
9231 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
9233 also affects the iASL compiler constant folding. (Note: as per below, the
9234 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
9236 Fixed a problem where string and buffer objects with "static" pointers
9237 (pointers to initialization data within an ACPI table) were not handled
9238 consistently. The internal object copy operation now always copies the
9240 to a newly allocated buffer, regardless of whether the source object is
9243 Fixed a problem with the FromBCD operator where an implicit result
9244 conversion was improperly performed while storing the result to the
9246 operand. Since this is an "explicit conversion" operator, the implicit
9247 conversion should never be performed on the output.
9249 Fixed a problem with the CopyObject operator where a copy to an existing
9250 named object did not always completely overwrite the existing object
9252 at name. Specifically, a buffer-to-buffer copy did not delete the
9256 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9258 structs for consistency.
9260 Code and Data Size: Current and previous core subsystem library sizes are
9261 shown below. These are the code and data sizes for the acpica.lib
9263 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9264 any ACPI driver or OSPM code. The debug version of the code includes the
9265 debug output trace mechanism and has a much larger code and data size.
9267 that these values will vary depending on the efficiency of the compiler
9269 the compiler options used during generation.
9272 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9273 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9274 Current Release: (Same sizes)
9275 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9276 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9279 2) iASL Compiler/Disassembler:
9281 The compiler now emits a warning if an attempt is made to generate a 64-
9283 integer constant from within a 32-bit ACPI table (Revision < 2). The
9285 is truncated to 32 bits.
9287 Fixed a problem with large package objects: if the static length of the
9288 package is greater than 255, the "variable length package" opcode is
9289 emitted. Previously, this caused an error. This requires an update to the
9290 ACPI spec, since it currently (incorrectly) states that packages larger
9292 255 elements are not allowed.
9294 The disassembler now correctly handles variable length packages and
9296 larger than 255 elements.
9298 ----------------------------------------
9299 08 April 2005. Summary of changes for version 20050408:
9301 1) ACPI CA Core Subsystem:
9303 Fixed three cases in the interpreter where an "index" argument to an ASL
9304 function was still (internally) 32 bits instead of the required 64 bits.
9305 This was the Index argument to the Index, Mid, and Match operators.
9307 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9309 not a POSIX-defined function and not present in most kernel-level C
9310 libraries. All references to the C library strupr function have been
9314 Completed the deployment of static functions/prototypes. All prototypes
9316 the static attribute have been moved from the headers to the owning C
9319 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9320 utility). This option allows the utility to extract individual ACPI
9322 from the output of AcpiDmp. It provides the same functionality of the
9323 acpixtract.pl perl script without the worry of setting the correct perl
9324 options. AcpiBin runs on Windows and has not yet been generated/validated
9326 the Linux/Unix environment (but should be soon).
9328 Updated and fixed the table dump option for AcpiBin (-d). This option
9329 converts a single ACPI table to a hex/ascii file, similar to the output
9333 Code and Data Size: Current and previous core subsystem library sizes are
9334 shown below. These are the code and data sizes for the acpica.lib
9336 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9337 any ACPI driver or OSPM code. The debug version of the code includes the
9338 debug output trace mechanism and has a much larger code and data size.
9340 that these values will vary depending on the efficiency of the compiler
9342 the compiler options used during generation.
9345 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9346 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9348 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9349 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9352 2) iASL Compiler/Disassembler:
9354 Disassembler fix: Added a check to ensure that the table length found in
9356 ACPI table header within the input file is not longer than the actual
9358 file size. This indicates some kind of file or table corruption.
9360 ----------------------------------------
9361 29 March 2005. Summary of changes for version 20050329:
9363 1) ACPI CA Core Subsystem:
9365 An error is now generated if an attempt is made to create a Buffer Field
9367 length zero (A CreateField with a length operand of zero.)
9369 The interpreter now issues a warning whenever executable code at the
9371 level is detected during ACPI table load. This will give some idea of the
9372 prevalence of this type of code.
9374 Implemented support for references to named objects (other than control
9375 methods) within package objects.
9377 Enhanced package object output for the debug object. Package objects are
9379 completely dumped, showing all elements.
9381 Enhanced miscellaneous object output for the debug object. Any object can
9382 now be written to the debug object (for example, a device object can be
9383 written, and the type of the object will be displayed.)
9385 The "static" qualifier has been added to all local functions across both
9387 core subsystem and the iASL compiler.
9389 The number of "long" lines (> 80 chars) within the source has been
9390 significantly reduced, by about 1/3.
9392 Cleaned up all header files to ensure that all CA/iASL functions are
9393 prototyped (even static functions) and the formatting is consistent.
9395 Two new header files have been added, acopcode.h and acnames.h.
9397 Removed several obsolete functions that were no longer used.
9399 Code and Data Size: Current and previous core subsystem library sizes are
9400 shown below. These are the code and data sizes for the acpica.lib
9402 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9403 any ACPI driver or OSPM code. The debug version of the code includes the
9404 debug output trace mechanism and has a much larger code and data size.
9406 that these values will vary depending on the efficiency of the compiler
9408 the compiler options used during generation.
9411 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9412 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9414 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9415 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9419 2) iASL Compiler/Disassembler:
9421 Fixed a problem with the resource descriptor generation/support. For the
9422 ResourceSourceIndex and the ResourceSource fields, both must be present,
9424 both must be not present - can't have one without the other.
9426 The compiler now returns non-zero from the main procedure if any errors
9428 occurred during the compilation.
9431 ----------------------------------------
9432 09 March 2005. Summary of changes for version 20050309:
9434 1) ACPI CA Core Subsystem:
9436 The string-to-buffer implicit conversion code has been modified again
9438 a change to the ACPI specification. In order to match the behavior of
9440 other major ACPI implementation, the target buffer is no longer truncated
9442 the source string is smaller than an existing target buffer. This change
9443 requires an update to the ACPI spec, and should eliminate the recent
9444 AE_AML_BUFFER_LIMIT issues.
9446 The "implicit return" support was rewritten to a new algorithm that
9448 the general case. Rather than attempt to determine when a method is about
9450 exit, the result of every ASL operator is saved momentarily until the
9452 next ASL operator is executed. Therefore, no matter how the method exits,
9453 there will always be a saved implicit return value. This feature is only
9454 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9456 AE_AML_NO_RETURN_VALUE errors when enabled.
9458 Implemented implicit conversion support for the predicate (operand) of
9460 If, Else, and While operators. String and Buffer arguments are
9462 converted to Integers.
9464 Changed the string-to-integer conversion behavior to match the new ACPI
9465 errata: "If no integer object exists, a new integer is created. The ASCII
9466 string is interpreted as a hexadecimal constant. Each string character is
9467 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9468 with the first character as the most significant digit, and ending with
9470 first non-hexadecimal character or end-of-string." This means that the
9472 non-hex character terminates the conversion and this is the code that was
9475 Fixed a problem where the ObjectType operator would fail (fault) when
9477 on an Index of a Package which pointed to a null package element. The
9478 operator now properly returns zero (Uninitialized) in this case.
9480 Fixed a problem where the While operator used excessive memory by not
9481 properly popping the result stack during execution. There was no memory
9483 after execution, however. (Code provided by Valery Podrezov.)
9485 Fixed a problem where references to control methods within Package
9487 caused the method to be invoked, instead of producing a reference object
9488 pointing to the method.
9490 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9492 improve performance and reduce code size. (Code provided by Alexey
9495 Code and Data Size: Current and previous core subsystem library sizes are
9496 shown below. These are the code and data sizes for the acpica.lib
9498 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9499 any ACPI driver or OSPM code. The debug version of the code includes the
9500 debug output trace mechanism and has a much larger code and data size.
9502 that these values will vary depending on the efficiency of the compiler
9504 the compiler options used during generation.
9507 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9508 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9510 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9511 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9514 2) iASL Compiler/Disassembler:
9516 Fixed a problem with the Return operator with no arguments. Since the AML
9517 grammar for the byte encoding requires an operand for the Return opcode,
9519 compiler now emits a Return(Zero) for this case. An ACPI specification
9520 update has been written for this case.
9522 For tables other than the DSDT, namepath optimization is automatically
9523 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9525 compiler has no knowledge of where, and thus cannot optimize namepaths.
9527 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9528 inadvertently omitted from the ACPI specification, and will require an
9531 The source file scan for ASCII characters is now optional (-a). This
9533 was made because some vendors place non-ascii characters within comments.
9534 However, the scan is simply a brute-force byte compare to ensure all
9535 characters in the file are in the range 0x00 to 0x7F.
9537 Fixed a problem with the CondRefOf operator where the compiler was
9538 inappropriately checking for the existence of the target. Since the point
9540 the operator is to check for the existence of the target at run-time, the
9541 compiler no longer checks for the target existence.
9543 Fixed a problem where errors generated from the internal AML interpreter
9544 during constant folding were not handled properly, causing a fault.
9546 Fixed a problem with overly aggressive range checking for the Stall
9547 operator. The valid range (max 255) is now only checked if the operand is
9549 type Integer. All other operand types cannot be statically checked.
9551 Fixed a problem where control method references within the RefOf,
9553 and ObjectType operators were not treated properly. They are now treated
9555 actual references, not method invocations.
9557 Fixed and enhanced the "list namespace" option (-ln). This option was
9559 a number of releases ago.
9561 Improved error handling for the Field, IndexField, and BankField
9563 The compiler now cleanly reports and recovers from errors in the field
9564 component (FieldUnit) list.
9566 Fixed a disassembler problem where the optional ResourceDescriptor fields
9567 TRS and TTP were not always handled correctly.
9569 Disassembler - Comments in output now use "//" instead of "/*"
9571 ----------------------------------------
9572 28 February 2005. Summary of changes for version 20050228:
9574 1) ACPI CA Core Subsystem:
9576 Fixed a problem where the result of an Index() operator (an object
9577 reference) must increment the reference count on the target object for
9579 life of the object reference.
9581 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9582 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9584 resource descriptors.
9586 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9587 Space Descriptor" string, indicating interpreter support for the
9591 Implemented header support for the new ACPI 3.0 FADT flag bits.
9593 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9595 status/enable registers.
9597 Updated header support for the MADT processor local Apic struct and MADT
9598 platform interrupt source struct for new ACPI 3.0 fields.
9600 Implemented header support for the SRAT and SLIT ACPI tables.
9602 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9606 Code and Data Size: Current and previous core subsystem library sizes are
9607 shown below. These are the code and data sizes for the acpica.lib
9609 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9610 any ACPI driver or OSPM code. The debug version of the code includes the
9611 debug output trace mechanism and has a much larger code and data size.
9613 that these values will vary depending on the efficiency of the compiler
9615 the compiler options used during generation.
9618 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9619 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9621 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9622 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9625 2) iASL Compiler/Disassembler:
9627 Fixed a problem with the internal 64-bit String-to-integer conversion
9629 strings less than two characters long.
9631 Fixed a problem with constant folding where the result of the Index()
9632 operator can not be considered a constant. This means that Index() cannot
9634 a type3 opcode and this will require an update to the ACPI specification.
9636 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9637 descriptor fields. These fields were inadvertently ignored and not output
9639 the disassembly of the resource descriptor.
9642 ----------------------------------------
9643 11 February 2005. Summary of changes for version 20050211:
9645 1) ACPI CA Core Subsystem:
9647 Implemented ACPI 3.0 support for implicit conversion within the Match()
9648 operator. MatchObjects can now be of type integer, buffer, or string
9650 of just type integer. Package elements are implicitly converted to the
9652 of the MatchObject. This change aligns the behavior of Match() with the
9653 behavior of the other logical operators (LLess(), etc.) It also requires
9655 errata change to the ACPI specification as this support was intended for
9656 ACPI 3.0, but was inadvertently omitted.
9658 Fixed a problem with the internal implicit "to buffer" conversion.
9660 that are converted to buffers will cause buffer truncation if the string
9662 smaller than the target buffer. Integers that are converted to buffers
9664 not cause buffer truncation, only zero extension (both as per the ACPI
9665 spec.) The problem was introduced when code was added to truncate the
9666 buffer, but this should not be performed in all cases, only the string
9669 Fixed a problem with the Buffer and Package operators where the
9671 would get confused if two such operators were used as operands to an ASL
9672 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9673 stack was not being popped after the execution of these operators,
9675 in an AE_NO_RETURN_VALUE exception.
9677 Fixed a problem with constructs of the form Store(Index(...),...). The
9678 reference object returned from Index was inadvertently resolved to an
9680 value. This problem was introduced in version 20050114 when the behavior
9682 Store() was modified to restrict the object types that can be used as the
9683 source operand (to match the ACPI specification.)
9685 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9687 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9689 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9691 Code and Data Size: Current and previous core subsystem library sizes are
9692 shown below. These are the code and data sizes for the acpica.lib
9694 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9695 any ACPI driver or OSPM code. The debug version of the code includes the
9696 debug output trace mechanism and has a much larger code and data size.
9698 that these values will vary depending on the efficiency of the compiler
9700 the compiler options used during generation.
9703 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9704 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9706 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9707 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9710 2) iASL Compiler/Disassembler:
9712 Fixed a code generation problem in the constant folding optimization code
9713 where incorrect code was generated if a constant was reduced to a buffer
9714 object (i.e., a reduced type 5 opcode.)
9716 Fixed a typechecking problem for the ToBuffer operator. Caused by an
9717 incorrect return type in the internal opcode information table.
9719 ----------------------------------------
9720 25 January 2005. Summary of changes for version 20050125:
9722 1) ACPI CA Core Subsystem:
9724 Fixed a recently introduced problem with the Global Lock where the
9725 underlying semaphore was not created. This problem was introduced in
9726 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
9727 Acquire() operation on _GL.
9729 The local object cache is now optional, and is disabled by default. Both
9730 AcpiExec and the iASL compiler enable the cache because they run in user
9731 mode and this enhances their performance. #define
9732 ACPI_ENABLE_OBJECT_CACHE
9733 to enable the local cache.
9735 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
9737 optional "implicit return" support where an error was returned if no
9739 object was expected, but one was implicitly returned. AE_OK is now
9741 in this case and the implicitly returned object is deleted.
9742 AcpiUtEvaluateObject is only occasionally used, and only to execute
9744 methods such as _STA and _INI where the return type is known up front.
9746 Fixed a few issues with the internal convert-to-integer code. It now
9748 an error if an attempt is made to convert a null string, a string of only
9749 blanks/tabs, or a zero-length buffer. This affects both implicit
9751 and explicit conversion via the ToInteger() operator.
9753 The internal debug code in AcpiUtAcquireMutex has been commented out. It
9755 not needed for normal operation and should increase the performance of
9757 entire subsystem. The code remains in case it is needed for debug
9761 The AcpiExec source and makefile are included in the Unix/Linux package
9765 Code and Data Size: Current and previous core subsystem library sizes are
9766 shown below. These are the code and data sizes for the acpica.lib
9768 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9769 any ACPI driver or OSPM code. The debug version of the code includes the
9770 debug output trace mechanism and has a much larger code and data size.
9772 that these values will vary depending on the efficiency of the compiler
9774 the compiler options used during generation.
9777 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9778 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9780 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9781 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9783 2) iASL Compiler/Disassembler:
9785 Switch/Case support: A warning is now issued if the type of the Switch
9787 cannot be determined at compile time. For example, Switch(Arg0) will
9788 generate the warning, and the type is assumed to be an integer. As per
9790 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
9794 Switch/Case support: Implemented support for buffer and string objects as
9795 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
9796 buffers and strings.
9798 Switch/Case support: The emitted code for the LEqual() comparisons now
9800 the switch value as the first operand, not the second. The case value is
9802 the second operand, and this allows the case value to be implicitly
9803 converted to the type of the switch value, not the other way around.
9805 Switch/Case support: Temporary variables are now emitted immediately
9807 the control method, not at the global level. This means that there are
9809 36 temps available per-method, not 36 temps per-module as was the case
9811 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
9813 ----------------------------------------
9814 14 January 2005. Summary of changes for version 20050114:
9816 Added 2005 copyright to all module headers. This affects every module in
9817 the core subsystem, iASL compiler, and the utilities.
9819 1) ACPI CA Core Subsystem:
9821 Fixed an issue with the String-to-Buffer conversion code where the string
9822 null terminator was not included in the buffer after conversion, but
9824 is existing ASL that assumes the string null terminator is included. This
9826 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
9827 introduced in the previous version when the code was updated to correctly
9828 set the converted buffer size as per the ACPI specification. The ACPI
9830 is ambiguous and will be updated to specify that the null terminator must
9832 included in the converted buffer. This also affects the ToBuffer() ASL
9835 Fixed a problem with the Mid() ASL/AML operator where it did not work
9836 correctly on Buffer objects. Newly created sub-buffers were not being
9841 Fixed a problem in AcpiTbFindTable where incorrect string compares were
9842 performed on the OemId and OemTableId table header fields. These fields
9844 not null terminated, so strncmp is now used instead of strcmp.
9846 Implemented a restriction on the Store() ASL/AML operator to align the
9847 behavior with the ACPI specification. Previously, any object could be
9849 as the source operand. Now, the only objects that may be used are
9851 Buffers, Strings, Packages, Object References, and DDB Handles. If
9852 necessary, the original behavior can be restored by enabling the
9853 EnableInterpreterSlack flag.
9855 Enhanced the optional "implicit return" support to allow an implicit
9857 value from methods that are invoked externally via the AcpiEvaluateObject
9858 interface. This enables implicit returns from the _STA and _INI methods,
9861 Changed the Revision() ASL/AML operator to return the current version of
9863 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
9865 the supported ACPI version (This is the function of the _REV method).
9867 Updated the _REV predefined method to return the currently supported
9871 Implemented batch mode option for the AcpiExec utility (-b).
9873 Code and Data Size: Current and previous core subsystem library sizes are
9874 shown below. These are the code and data sizes for the acpica.lib
9876 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9877 any ACPI driver or OSPM code. The debug version of the code includes the
9878 debug output trace mechanism and has a much larger code and data size.
9880 that these values will vary depending on the efficiency of the compiler
9882 the compiler options used during generation.
9885 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9886 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9888 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9889 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9891 ----------------------------------------
9892 10 December 2004. Summary of changes for version 20041210:
9894 ACPI 3.0 support is nearing completion in both the iASL compiler and the
9895 ACPI CA core subsystem.
9897 1) ACPI CA Core Subsystem:
9899 Fixed a problem in the ToDecimalString operator where the resulting
9901 length was incorrectly calculated. The length is now calculated exactly,
9902 eliminating incorrect AE_STRING_LIMIT exceptions.
9904 Fixed a problem in the ToHexString operator to allow a maximum 200
9906 string to be produced.
9908 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
9910 routine where the length of the resulting buffer was not truncated to the
9911 new size (if the target buffer already existed).
9913 Code and Data Size: Current and previous core subsystem library sizes are
9914 shown below. These are the code and data sizes for the acpica.lib
9916 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9917 any ACPI driver or OSPM code. The debug version of the code includes the
9918 debug output trace mechanism and has a much larger code and data size.
9920 that these values will vary depending on the efficiency of the compiler
9922 the compiler options used during generation.
9925 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9926 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9928 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9929 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9932 2) iASL Compiler/Disassembler:
9934 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
9935 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
9936 Includes support in the disassembler.
9938 Implemented support for the new (ACPI 3.0) parameter to the Register
9942 Fixed a problem where the _HE resource name for the Interrupt macro was
9943 referencing bit 0 instead of bit 1.
9945 Implemented check for maximum 255 interrupts in the Interrupt macro.
9947 Fixed a problem with the predefined resource descriptor names where
9948 incorrect AML code was generated if the offset within the resource buffer
9949 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
9950 but did not update the surrounding package lengths.
9952 Changes to the Dma macro: All channels within the channel list must be
9954 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
9955 optional (default is BusMaster).
9957 Implemented check for maximum 7 data bytes for the VendorShort macro.
9959 The ReadWrite parameter is now optional for the Memory32 and similar
9962 ----------------------------------------
9963 03 December 2004. Summary of changes for version 20041203:
9965 1) ACPI CA Core Subsystem:
9967 The low-level field insertion/extraction code (exfldio) has been
9969 rewritten to eliminate unnecessary complexity, bugs, and boundary
9972 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
9974 operators where the input operand could be inadvertently deleted if no
9975 conversion was necessary (e.g., if the input to ToInteger was an Integer
9978 Fixed a problem with the ToDecimalString and ToHexString where an
9980 exception code was returned if the resulting string would be > 200 chars.
9981 AE_STRING_LIMIT is now returned.
9983 Fixed a problem with the Concatenate operator where AE_OK was always
9984 returned, even if the operation failed.
9986 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
9987 semaphores to be allocated.
9989 Code and Data Size: Current and previous core subsystem library sizes are
9990 shown below. These are the code and data sizes for the acpica.lib
9992 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9993 any ACPI driver or OSPM code. The debug version of the code includes the
9994 debug output trace mechanism and has a much larger code and data size.
9996 that these values will vary depending on the efficiency of the compiler
9998 the compiler options used during generation.
10001 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10002 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10004 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10005 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10008 2) iASL Compiler/Disassembler:
10010 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
10011 recently introduced in 20041119.
10013 Fixed a problem with the ToUUID macro where the upper nybble of each
10015 byte was inadvertently set to zero.
10017 ----------------------------------------
10018 19 November 2004. Summary of changes for version 20041119:
10020 1) ACPI CA Core Subsystem:
10022 Fixed a problem in the internal ConvertToInteger routine where new
10024 were not truncated to 32 bits for 32-bit ACPI tables. This routine
10026 buffers and strings to integers.
10028 Implemented support to store a value to an Index() on a String object.
10030 is an ACPI 2.0 feature that had not yet been implemented.
10032 Implemented new behavior for storing objects to individual package
10034 (via the Index() operator). The previous behavior was to invoke the
10036 conversion rules if an object was already present at the index. The new
10037 behavior is to simply delete any existing object and directly store the
10039 object. Although the ACPI specification seems unclear on this subject,
10041 ACPI implementations behave in this manner. (This is the root of the
10042 AE_BAD_HEX_CONSTANT issue.)
10044 Modified the RSDP memory scan mechanism to support the extended checksum
10046 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
10047 RSDP signature is found with a valid checksum.
10049 Code and Data Size: Current and previous core subsystem library sizes are
10050 shown below. These are the code and data sizes for the acpica.lib
10052 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10053 any ACPI driver or OSPM code. The debug version of the code includes the
10054 debug output trace mechanism and has a much larger code and data size.
10056 that these values will vary depending on the efficiency of the compiler
10058 the compiler options used during generation.
10061 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10062 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10064 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10065 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10068 2) iASL Compiler/Disassembler:
10070 Fixed a missing semicolon in the aslcompiler.y file.
10072 ----------------------------------------
10073 05 November 2004. Summary of changes for version 20041105:
10075 1) ACPI CA Core Subsystem:
10077 Implemented support for FADT revision 2. This was an interim table
10079 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
10081 Implemented optional support to allow uninitialized LocalX and ArgX
10082 variables in a control method. The variables are initialized to an
10084 object with a value of zero. This support is enabled by setting the
10085 AcpiGbl_EnableInterpreterSlack flag to TRUE.
10087 Implemented support for Integer objects for the SizeOf operator. Either
10089 or 8 is returned, depending on the current integer size (32-bit or 64-
10091 depending on the parent table revision).
10093 Fixed a problem in the implementation of the SizeOf and ObjectType
10095 where the operand was resolved to a value too early, causing incorrect
10096 return values for some objects.
10098 Fixed some possible memory leaks during exceptional conditions.
10100 Code and Data Size: Current and previous core subsystem library sizes are
10101 shown below. These are the code and data sizes for the acpica.lib
10103 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10104 any ACPI driver or OSPM code. The debug version of the code includes the
10105 debug output trace mechanism and has a much larger code and data size.
10107 that these values will vary depending on the efficiency of the compiler
10109 the compiler options used during generation.
10112 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10113 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10115 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10116 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10119 2) iASL Compiler/Disassembler:
10121 Implemented support for all ACPI 3.0 reserved names and methods.
10123 Implemented all ACPI 3.0 grammar elements in the front-end, including
10124 support for semicolons.
10126 Implemented the ACPI 3.0 Function() and ToUUID() macros
10128 Fixed a problem in the disassembler where a Scope() operator would not be
10129 emitted properly if the target of the scope was in another table.
10131 ----------------------------------------
10132 15 October 2004. Summary of changes for version 20041015:
10134 Note: ACPI CA is currently undergoing an in-depth and complete formal
10135 evaluation to test/verify the following areas. Other suggestions are
10136 welcome. This will result in an increase in the frequency of releases and
10137 the number of bug fixes in the next few months.
10138 - Functional tests for all ASL/AML operators
10139 - All implicit/explicit type conversions
10140 - Bit fields and operation regions
10141 - 64-bit math support and 32-bit-only "truncated" math support
10142 - Exceptional conditions, both compiler and interpreter
10143 - Dynamic object deletion and memory leaks
10144 - ACPI 3.0 support when implemented
10145 - External interfaces to the ACPI subsystem
10148 1) ACPI CA Core Subsystem:
10150 Fixed two alignment issues on 64-bit platforms - within debug statements
10152 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
10154 field within the non-aligned ACPI generic address structure.
10156 Fixed a problem in the Increment and Decrement operators where incorrect
10157 operand resolution could result in the inadvertent modification of the
10158 original integer when the integer is passed into another method as an
10159 argument and the arg is then incremented/decremented.
10161 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
10163 BCD number were truncated during conversion.
10165 Fixed a problem in the ToDecimal operator where the length of the
10167 string could be set incorrectly too long if the input operand was a
10171 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
10173 within a buffer would prematurely terminate a compare between buffer
10176 Added a check for string overflow (>200 characters as per the ACPI
10177 specification) during the Concatenate operator with two string operands.
10179 Code and Data Size: Current and previous core subsystem library sizes are
10180 shown below. These are the code and data sizes for the acpica.lib
10182 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10183 any ACPI driver or OSPM code. The debug version of the code includes the
10184 debug output trace mechanism and has a much larger code and data size.
10186 that these values will vary depending on the efficiency of the compiler
10188 the compiler options used during generation.
10191 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10192 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10194 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10195 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10199 2) iASL Compiler/Disassembler:
10201 Allow the use of the ObjectType operator on uninitialized Locals and Args
10202 (returns 0 as per the ACPI specification).
10204 Fixed a problem where the compiler would fault if there was a syntax
10206 in the FieldName of all of the various CreateXXXField operators.
10208 Disallow the use of lower case letters within the EISAID macro, as per
10210 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
10212 U is an uppercase letter and N is a hex digit.
10215 ----------------------------------------
10216 06 October 2004. Summary of changes for version 20041006:
10218 1) ACPI CA Core Subsystem:
10220 Implemented support for the ACPI 3.0 Timer operator. This ASL function
10221 implements a 64-bit timer with 100 nanosecond granularity.
10223 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
10224 implement the ACPI 3.0 Timer operator. This allows the host OS to
10226 the timer with the best clock available. Also, it keeps the core
10228 out of the clock handling business, since the host OS (usually) performs
10231 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
10232 functions use a 64-bit address which is part of the packed ACPI Generic
10233 Address Structure. Since the structure is non-aligned, the alignment
10235 are now used to extract the address to a local variable before use.
10237 Fixed a problem where the ToInteger operator assumed all input strings
10239 hexadecimal. The operator now handles both decimal strings and hex
10241 (prefixed with "0x").
10243 Fixed a problem where the string length in the string object created as a
10244 result of the internal ConvertToString procedure could be incorrect. This
10245 potentially affected all implicit conversions and also the
10247 and ToHexString operators.
10249 Fixed two problems in the ToString operator. If the length parameter was
10250 zero, an incorrect string object was created and the value of the input
10251 length parameter was inadvertently changed from zero to Ones.
10253 Fixed a problem where the optional ResourceSource string in the
10255 resource macro was ignored.
10257 Simplified the interfaces to the internal division functions, reducing
10259 size and complexity.
10261 Code and Data Size: Current and previous core subsystem library sizes are
10262 shown below. These are the code and data sizes for the acpica.lib
10264 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10265 any ACPI driver or OSPM code. The debug version of the code includes the
10266 debug output trace mechanism and has a much larger code and data size.
10268 that these values will vary depending on the efficiency of the compiler
10270 the compiler options used during generation.
10273 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10274 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10276 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10277 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10280 2) iASL Compiler/Disassembler:
10282 Implemented support for the ACPI 3.0 Timer operator.
10284 Fixed a problem where the Default() operator was inadvertently ignored in
10286 Switch/Case block. This was a problem in the translation of the Switch
10287 statement to If...Else pairs.
10289 Added support to allow a standalone Return operator, with no parentheses
10293 Fixed a problem with code generation for the ElseIf operator where the
10294 translated Else...If parse tree was improperly constructed leading to the
10297 ----------------------------------------
10298 22 September 2004. Summary of changes for version 20040922:
10300 1) ACPI CA Core Subsystem:
10302 Fixed a problem with the implementation of the LNot() operator where
10304 was not returned for the TRUE case. Changed the code to return Ones
10306 of (!Arg) which was usually 1. This change affects iASL constant folding
10308 this operator also.
10310 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10312 initialized properly -- Now zero the entire buffer in this case where the
10313 buffer already exists.
10315 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10316 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10317 related code considerably. This will require changes/updates to all OS
10318 interface layers (OSLs.)
10320 Implemented a new external interface, AcpiInstallExceptionHandler, to
10322 a system exception handler to be installed. This handler is invoked upon
10324 run-time exception that occurs during control method execution.
10326 Added support for the DSDT in AcpiTbFindTable. This allows the
10327 DataTableRegion() operator to access the local copy of the DSDT.
10329 Code and Data Size: Current and previous core subsystem library sizes are
10330 shown below. These are the code and data sizes for the acpica.lib
10332 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10333 any ACPI driver or OSPM code. The debug version of the code includes the
10334 debug output trace mechanism and has a much larger code and data size.
10336 that these values will vary depending on the efficiency of the compiler
10338 the compiler options used during generation.
10341 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10342 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10344 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10345 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10348 2) iASL Compiler/Disassembler:
10350 Fixed a problem with constant folding and the LNot operator. LNot was
10351 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10353 could result in the generation of an incorrect folded/reduced constant.
10355 End-Of-File is now allowed within a "//"-style comment. A parse error no
10356 longer occurs if such a comment is at the very end of the input ASL
10360 Implemented the "-r" option to override the Revision in the table header.
10361 The initial use of this option will be to simplify the evaluation of the
10363 interpreter by allowing a single ASL source module to be compiled for
10365 32-bit or 64-bit integers.
10368 ----------------------------------------
10369 27 August 2004. Summary of changes for version 20040827:
10371 1) ACPI CA Core Subsystem:
10373 - Implemented support for implicit object conversion in the non-numeric
10374 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10376 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10377 the second operand is implicitly converted on the fly to match the type
10379 the first operand. For example:
10381 LEqual (Source1, Source2)
10383 Source1 and Source2 must each evaluate to an integer, a string, or a
10385 The data type of Source1 dictates the required type of Source2. Source2
10387 implicitly converted if necessary to match the type of Source1.
10389 - Updated and corrected the behavior of the string conversion support.
10391 rules concerning conversion of buffers to strings (according to the ACPI
10392 specification) are as follows:
10394 ToDecimalString - explicit byte-wise conversion of buffer to string of
10395 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10397 conversion of buffer to string of hex values (0-FF) separated by commas.
10398 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10400 copy with no transform except NULL terminated. Any other implicit buffer-
10402 string conversion - byte-wise conversion of buffer to string of hex
10404 (0-FF) separated by spaces.
10406 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10408 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10410 one byte too short in the case of a node in the root scope. This could
10411 cause a fault during debug output.
10413 - Code and Data Size: Current and previous core subsystem library sizes
10415 shown below. These are the code and data sizes for the acpica.lib
10417 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10418 any ACPI driver or OSPM code. The debug version of the code includes the
10419 debug output trace mechanism and has a much larger code and data size.
10421 that these values will vary depending on the efficiency of the compiler
10423 the compiler options used during generation.
10426 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10427 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10429 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10430 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10433 2) iASL Compiler/Disassembler:
10435 - Fixed a Linux generation error.
10438 ----------------------------------------
10439 16 August 2004. Summary of changes for version 20040816:
10441 1) ACPI CA Core Subsystem:
10443 Designed and implemented support within the AML interpreter for the so-
10444 called "implicit return". This support returns the result of the last
10446 operation within a control method, in the absence of an explicit Return()
10447 operator. A few machines depend on this behavior, even though it is not
10448 explicitly supported by the ASL language. It is optional support that
10450 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10452 Removed support for the PCI_Config address space from the internal low
10454 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10455 support was not used internally, and would not work correctly anyway
10457 the PCI bus number and segment number were not supported. There are
10458 separate interfaces for PCI configuration space access because of the
10462 Code and Data Size: Current and previous core subsystem library sizes are
10463 shown below. These are the code and data sizes for the acpica.lib
10465 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10466 any ACPI driver or OSPM code. The debug version of the code includes the
10467 debug output trace mechanism and has a much larger code and data size.
10469 that these values will vary depending on the efficiency of the compiler
10471 the compiler options used during generation.
10474 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10475 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10477 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10478 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10481 2) iASL Compiler/Disassembler:
10483 Fixed a problem where constants in ASL expressions at the root level (not
10484 within a control method) could be inadvertently truncated during code
10485 generation. This problem was introduced in the 20040715 release.
10488 ----------------------------------------
10489 15 July 2004. Summary of changes for version 20040715:
10491 1) ACPI CA Core Subsystem:
10493 Restructured the internal HW GPE interfaces to pass/track the current
10495 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10496 increase flexibility of the interfaces.
10498 Implemented a "lexicographical compare" for String and Buffer objects
10500 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10502 as per further clarification to the ACPI specification. Behavior is
10504 to C library "strcmp".
10506 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10507 external function. In the 32-bit non-debug case, the stack use has been
10508 reduced from 168 bytes to 32 bytes.
10510 Deployed a new run-time configuration flag,
10511 AcpiGbl_EnableInterpreterSlack,
10512 whose purpose is to allow the AML interpreter to forgive certain bad AML
10513 constructs. Default setting is FALSE.
10515 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10517 support code. If enabled, it allows field access to go beyond the end of
10519 region definition if the field is within the region length rounded up to
10521 next access width boundary (a common coding error.)
10523 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10524 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10526 symbols are lowercased by the latest version of the AcpiSrc tool.
10528 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10529 rename "Register" to simply "Reg" to prevent certain compilers from
10532 Code and Data Size: Current and previous core subsystem library sizes are
10533 shown below. These are the code and data sizes for the acpica.lib
10535 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10536 any ACPI driver or OSPM code. The debug version of the code includes the
10537 debug output trace mechanism and has a much larger code and data size.
10539 that these values will vary depending on the efficiency of the compiler
10541 the compiler options used during generation.
10544 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10545 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10547 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10548 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10551 2) iASL Compiler/Disassembler:
10553 Implemented full support for Package objects within the Case() operator.
10554 Note: The Break() operator is currently not supported within Case blocks
10555 (TermLists) as there is some question about backward compatibility with
10560 Fixed a problem where complex terms were not supported properly within
10564 Eliminated extraneous warning for compiler-emitted reserved names of the
10565 form "_T_x". (Used in Switch/Case operators.)
10567 Eliminated optimization messages for "_T_x" objects and small constants
10568 within the DefinitionBlock operator.
10571 ----------------------------------------
10572 15 June 2004. Summary of changes for version 20040615:
10574 1) ACPI CA Core Subsystem:
10576 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10578 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10581 All directory names in the entire source package are lower case, as they
10582 were in earlier releases.
10584 Implemented "Disassemble" command in the AML debugger that will
10586 a single control method.
10588 Code and Data Size: Current and previous core subsystem library sizes are
10589 shown below. These are the code and data sizes for the acpica.lib
10591 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10592 any ACPI driver or OSPM code. The debug version of the code includes the
10593 debug output trace mechanism and has a much larger code and data size.
10595 that these values will vary depending on the efficiency of the compiler
10597 the compiler options used during generation.
10600 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10601 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10604 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10605 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10608 2) iASL Compiler/Disassembler:
10610 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10612 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10615 All directory names in the entire source package are lower case, as they
10616 were in earlier releases.
10618 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10621 Fixed an issue with the Windows version of the compiler where later
10623 of Windows place the FADT in the registry under the name "FADT" and not
10624 "FACP" as earlier versions did. This applies when using the -g or -
10625 d<nofilename> options. The compiler now looks for both strings as
10628 Fixed a problem with compiler namepath optimization where a namepath
10630 the Scope() operator could not be optimized if the namepath was a subpath
10632 the current scope path.
10634 ----------------------------------------
10635 27 May 2004. Summary of changes for version 20040527:
10637 1) ACPI CA Core Subsystem:
10639 Completed a new design and implementation for EBDA (Extended BIOS Data
10641 support in the RSDP scan code. The original code improperly scanned for
10643 EBDA by simply scanning from memory location 0 to 0x400. The correct
10645 is to first obtain the EBDA pointer from within the BIOS data area, then
10646 scan 1K of memory starting at the EBDA pointer. There appear to be few
10648 any machines that place the RSDP in the EBDA, however.
10650 Integrated a fix for a possible fault during evaluation of BufferField
10651 arguments. Obsolete code that was causing the problem was removed.
10653 Found and fixed a problem in the Field Support Code where data could be
10654 corrupted on a bit field read that starts on an aligned boundary but does
10655 not end on an aligned boundary. Merged the read/write "datum length"
10656 calculation code into a common procedure.
10658 Rolled in a couple of changes to the FreeBSD-specific header.
10661 Code and Data Size: Current and previous core subsystem library sizes are
10662 shown below. These are the code and data sizes for the acpica.lib
10664 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10665 any ACPI driver or OSPM code. The debug version of the code includes the
10666 debug output trace mechanism and has a much larger code and data size.
10668 that these values will vary depending on the efficiency of the compiler
10670 the compiler options used during generation.
10673 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10674 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10676 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10677 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10680 2) iASL Compiler/Disassembler:
10682 Fixed a generation warning produced by some overly-verbose compilers for
10686 ----------------------------------------
10687 14 May 2004. Summary of changes for version 20040514:
10689 1) ACPI CA Core Subsystem:
10691 Fixed a problem where hardware GPE enable bits sometimes not set properly
10692 during and after GPE method execution. Result of 04/27 changes.
10694 Removed extra "clear all GPEs" when sleeping/waking.
10696 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10697 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10699 the new AcpiEv* calls as appropriate.
10701 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10703 now "Microsoft Windows NT" for maximum compatibility. However this can
10705 changed by modifying the acconfig.h file.
10707 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10708 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10710 Run _INI methods on ThermalZone objects. This is against the ACPI
10711 specification, but there is apparently ASL code in the field that has
10713 _INI methods, and apparently "other" AML interpreters execute them.
10715 Performed a full 16/32/64 bit lint that resulted in some small changes.
10717 Added a sleep simulation command to the AML debugger to test sleep code.
10719 Code and Data Size: Current and previous core subsystem library sizes are
10720 shown below. These are the code and data sizes for the acpica.lib
10722 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10723 any ACPI driver or OSPM code. The debug version of the code includes the
10724 debug output trace mechanism and has a much larger code and data size.
10726 that these values will vary depending on the efficiency of the compiler
10728 the compiler options used during generation.
10731 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10732 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10734 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10735 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10737 ----------------------------------------
10738 27 April 2004. Summary of changes for version 20040427:
10740 1) ACPI CA Core Subsystem:
10742 Completed a major overhaul of the GPE handling within ACPI CA. There are
10743 now three types of GPEs: wake-only, runtime-only, and combination
10745 The only GPEs allowed to be combination wake/run are for button-style
10746 devices such as a control-method power button, control-method sleep
10748 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
10750 referenced by any _PRW methods are marked for "runtime" and hardware
10751 enabled. Any GPE that is referenced by a _PRW method is marked for
10753 (and disabled at runtime). However, at sleep time, only those GPEs that
10754 have been specifically enabled for wake via the AcpiEnableGpe interface
10756 actually be hardware enabled.
10758 A new external interface has been added, AcpiSetGpeType(), that is meant
10760 be used by device drivers to force a GPE to a particular type. It will
10762 especially useful for the drivers for the button devices mentioned above.
10764 Completed restructuring of the ACPI CA initialization sequence so that
10765 default operation region handlers are installed before GPEs are
10767 and the _PRW methods are executed. This will prevent errors when the
10769 methods attempt to access system memory or I/O space.
10771 GPE enable/disable no longer reads the GPE enable register. We now keep
10773 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
10774 thus no longer depend on the hardware to maintain these bits.
10776 Always clear the wake status and fixed/GPE status bits before sleep, even
10779 Improved the AML debugger output for displaying the GPE blocks and their
10782 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
10786 Fixed a problem where the physical address was incorrectly calculated
10788 the Load() operator was used to directly load from an Operation Region
10790 loading from a Field object.) Also added check for minimum table length
10794 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
10797 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
10798 consistency with the other fields returned.
10800 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
10801 structure for each GPE in the system, so the size of this structure is
10804 CPU stack requirement reduction: Cleaned up the method execution and
10806 evaluation paths so that now a parameter structure is passed, instead of
10807 copying the various method parameters over and over again.
10809 In evregion.c: Correctly exit and reenter the interpreter region if and
10810 only if dispatching an operation region request to a user-installed
10812 Do not exit/reenter when dispatching to a default handler (e.g., default
10813 system memory or I/O handlers)
10816 Notes for updating drivers for the new GPE support. The following
10818 must be made to ACPI-related device drivers that are attached to one or
10820 GPEs: (This information will be added to the ACPI CA Programmer
10823 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
10825 explicitly call AcpiEnableGpe.
10826 2) There is a new interface called AcpiSetGpeType. This should be called
10827 before enabling the GPE. Also, this interface will automatically disable
10828 the GPE if it is currently enabled.
10829 3) AcpiEnableGpe no longer supports a GPE type flag.
10831 Specific drivers that must be changed:
10833 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
10834 AeGpeHandler, NULL);
10835 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
10836 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
10838 2) Button Drivers (Power, Lid, Sleep):
10839 Run _PRW method under parent device
10840 If _PRW exists: /* This is a control-method button */
10841 Extract GPE number and possibly GpeDevice
10842 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
10843 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
10845 For all other devices that have _PRWs, we automatically set the GPE type
10847 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
10849 must be done on a selective basis, usually requiring some kind of user
10851 to allow the user to pick the wake devices.
10854 Code and Data Size: Current and previous core subsystem library sizes are
10855 shown below. These are the code and data sizes for the acpica.lib
10857 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10858 any ACPI driver or OSPM code. The debug version of the code includes the
10859 debug output trace mechanism and has a much larger code and data size.
10861 that these values will vary depending on the efficiency of the compiler
10863 the compiler options used during generation.
10866 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10867 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10870 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10871 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10875 ----------------------------------------
10876 02 April 2004. Summary of changes for version 20040402:
10878 1) ACPI CA Core Subsystem:
10880 Fixed an interpreter problem where an indirect store through an ArgX
10881 parameter was incorrectly applying the "implicit conversion rules" during
10882 the store. From the ACPI specification: "If the target is a method local
10884 argument (LocalX or ArgX), no conversion is performed and the result is
10885 stored directly to the target". The new behavior is to disable implicit
10886 conversion during ALL stores to an ArgX.
10888 Changed the behavior of the _PRW method scan to ignore any and all errors
10889 returned by a given _PRW. This prevents the scan from aborting from the
10890 failure of any single _PRW.
10892 Moved the runtime configuration parameters from the global init procedure
10894 static variables in acglobal.h. This will allow the host to override the
10895 default values easily.
10897 Code and Data Size: Current and previous core subsystem library sizes are
10898 shown below. These are the code and data sizes for the acpica.lib
10900 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10901 any ACPI driver or OSPM code. The debug version of the code includes the
10902 debug output trace mechanism and has a much larger code and data size.
10904 that these values will vary depending on the efficiency of the compiler
10906 the compiler options used during generation.
10909 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10910 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10912 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10913 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10916 2) iASL Compiler/Disassembler:
10918 iASL now fully disassembles SSDTs. However, External() statements are
10920 generated automatically for unresolved symbols at this time. This is a
10921 planned feature for future implementation.
10923 Fixed a scoping problem in the disassembler that occurs when the type of
10925 target of a Scope() operator is overridden. This problem caused an
10926 incorrectly nested internal namespace to be constructed.
10928 Any warnings or errors that are emitted during disassembly are now
10930 out automatically so that the resulting file can be recompiled without
10934 ----------------------------------------
10935 26 March 2004. Summary of changes for version 20040326:
10937 1) ACPI CA Core Subsystem:
10939 Implemented support for "wake" GPEs via interaction between GPEs and the
10940 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
10941 identified as a WAKE GPE and by default will no longer be enabled at
10942 runtime. Previously, we were blindly enabling all GPEs with a
10944 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
10946 believe this has been the cause of thousands of "spurious" GPEs on some
10949 This new GPE behavior is can be reverted to the original behavior (enable
10950 ALL GPEs at runtime) via a runtime flag.
10952 Fixed a problem where aliased control methods could not access objects
10953 properly. The proper scope within the namespace was not initialized
10954 (transferred to the target of the aliased method) before executing the
10957 Fixed a potential race condition on internal object deletion on the
10959 object in AcpiEvaluateObject.
10961 Integrated a fix for resource descriptors where both _MEM and _MTP were
10962 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
10963 wide, 0x0F instead of 0x03.)
10965 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
10968 fault in some cases.
10970 Updated Notify() values for debug statements in evmisc.c
10972 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
10974 Code and Data Size: Current and previous core subsystem library sizes are
10975 shown below. These are the code and data sizes for the acpica.lib
10977 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10978 any ACPI driver or OSPM code. The debug version of the code includes the
10979 debug output trace mechanism and has a much larger code and data size.
10981 that these values will vary depending on the efficiency of the compiler
10983 the compiler options used during generation.
10987 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10988 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10990 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10991 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10993 ----------------------------------------
10994 11 March 2004. Summary of changes for version 20040311:
10996 1) ACPI CA Core Subsystem:
10998 Fixed a problem where errors occurring during the parse phase of control
10999 method execution did not abort cleanly. For example, objects created and
11000 installed in the namespace were not deleted. This caused all subsequent
11001 invocations of the method to return the AE_ALREADY_EXISTS exception.
11003 Implemented a mechanism to force a control method to "Serialized"
11005 if the method attempts to create namespace objects. (The root of the
11006 AE_ALREADY_EXISTS problem.)
11008 Implemented support for the predefined _OSI "internal" control method.
11009 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
11011 "Windows 2001.1", and can be easily upgraded for new strings as
11013 This feature will allow "other" operating systems to execute the fully
11014 tested, "Windows" code path through the ASL code
11016 Global Lock Support: Now allows multiple acquires and releases with any
11017 internal thread. Removed concept of "owning thread" for this special
11020 Fixed two functions that were inappropriately declaring large objects on
11022 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
11024 method execution considerably.
11026 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
11027 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
11029 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
11030 defined on the machine.
11032 Implemented two runtime options: One to force all control method
11034 to "Serialized" to mimic Windows behavior, another to disable _OSI
11036 if it causes problems on a given machine.
11038 Code and Data Size: Current and previous core subsystem library sizes are
11039 shown below. These are the code and data sizes for the acpica.lib
11041 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11042 any ACPI driver or OSPM code. The debug version of the code includes the
11043 debug output trace mechanism and has a much larger code and data size.
11045 that these values will vary depending on the efficiency of the compiler
11047 the compiler options used during generation.
11050 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11051 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11053 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11054 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11056 2) iASL Compiler/Disassembler:
11058 Fixed an array size problem for FreeBSD that would cause the compiler to
11061 ----------------------------------------
11062 20 February 2004. Summary of changes for version 20040220:
11065 1) ACPI CA Core Subsystem:
11067 Implemented execution of _SxD methods for Device objects in the
11068 GetObjectInfo interface.
11070 Fixed calls to _SST method to pass the correct arguments.
11072 Added a call to _SST on wake to restore to "working" state.
11074 Check for End-Of-Buffer failure case in the WalkResources interface.
11076 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
11077 structures to the beginning of the file.
11079 After wake, clear GPE status register(s) before enabling GPEs.
11081 After wake, clear/enable power button. (Perhaps we should clear/enable
11083 fixed events upon wake.)
11085 Fixed a couple of possible memory leaks in the Namespace manager.
11087 Integrated latest acnetbsd.h file.
11089 ----------------------------------------
11090 11 February 2004. Summary of changes for version 20040211:
11093 1) ACPI CA Core Subsystem:
11095 Completed investigation and implementation of the call-by-reference
11096 mechanism for control method arguments.
11098 Fixed a problem where a store of an object into an indexed package could
11099 fail if the store occurs within a different method than the method that
11100 created the package.
11102 Fixed a problem where the ToDecimal operator could return incorrect
11105 Fixed a problem where the CopyObject operator could fail on some of the
11107 obscure objects (e.g., Reference objects.)
11109 Improved the output of the Debug object to display buffer, package, and
11112 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
11114 the expected result.
11116 Added permanent ACPI_REPORT_ERROR macros for all instances of the
11117 ACPI_AML_INTERNAL exception.
11119 Integrated latest version of acfreebsd.h
11121 ----------------------------------------
11122 16 January 2004. Summary of changes for version 20040116:
11124 The purpose of this release is primarily to update the copyright years in
11125 each module, thus causing a huge number of diffs. There are a few small
11126 functional changes, however.
11128 1) ACPI CA Core Subsystem:
11130 Improved error messages when there is a problem finding one or more of
11132 required base ACPI tables
11134 Reintroduced the definition of APIC_HEADER in actbl.h
11136 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
11138 Removed extraneous reference to NewObj in dsmthdat.c
11142 Fixed a problem introduced in December that disabled the correct
11144 of Resource Templates
11147 ----------------------------------------
11148 03 December 2003. Summary of changes for version 20031203:
11150 1) ACPI CA Core Subsystem:
11152 Changed the initialization of Operation Regions during subsystem
11153 init to perform two entire walks of the ACPI namespace; The first
11154 to initialize the regions themselves, the second to execute the
11155 _REG methods. This fixed some interdependencies across _REG
11156 methods found on some machines.
11158 Fixed a problem where a Store(Local0, Local1) could simply update
11159 the object reference count, and not create a new copy of the
11160 object if the Local1 is uninitialized.
11162 Implemented support for the _SST reserved method during sleep
11165 Implemented support to clear the SLP_TYP and SLP_EN bits when
11166 waking up, this is apparently required by some machines.
11168 When sleeping, clear the wake status only if SleepState is not S5.
11170 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
11171 pointer arithmetic advanced a string pointer too far.
11173 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
11174 could be returned if the requested table has not been loaded.
11176 Within the support for IRQ resources, restructured the handling of
11177 the active and edge/level bits.
11179 Fixed a few problems in AcpiPsxExecute() where memory could be
11180 leaked under certain error conditions.
11182 Improved error messages for the cases where the ACPI mode could
11185 Code and Data Size: Current and previous core subsystem library
11186 sizes are shown below. These are the code and data sizes for the
11187 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11188 these values do not include any ACPI driver or OSPM code. The
11189 debug version of the code includes the debug output trace
11190 mechanism and has a much larger code and data size. Note that
11191 these values will vary depending on the efficiency of the compiler
11192 and the compiler options used during generation.
11194 Previous Release (20031029):
11195 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11196 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11198 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11199 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11201 2) iASL Compiler/Disassembler:
11203 Implemented a fix for the iASL disassembler where a bad index was
11204 generated. This was most noticeable on 64-bit platforms
11207 ----------------------------------------
11208 29 October 2003. Summary of changes for version 20031029:
11210 1) ACPI CA Core Subsystem:
11213 Fixed a problem where a level-triggered GPE with an associated
11214 _Lxx control method was incorrectly cleared twice.
11216 Fixed a problem with the Field support code where an access can
11217 occur beyond the end-of-region if the field is non-aligned but
11218 extends to the very end of the parent region (resulted in an
11219 AE_AML_REGION_LIMIT exception.)
11221 Fixed a problem with ACPI Fixed Events where an RT Clock handler
11222 would not get invoked on an RTC event. The RTC event bitmasks for
11223 the PM1 registers were not being initialized properly.
11225 Implemented support for executing _STA and _INI methods for
11226 Processor objects. Although this is currently not part of the
11227 ACPI specification, there is existing ASL code that depends on the
11228 init-time execution of these methods.
11230 Implemented and deployed a GetDescriptorName function to decode
11231 the various types of internal descriptors. Guards against null
11232 descriptors during debug output also.
11234 Implemented and deployed a GetNodeName function to extract the 4-
11235 character namespace node name. This function simplifies the debug
11236 and error output, as well as guarding against null pointers during
11239 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
11240 simplify the debug and error output of 64-bit integers. This
11241 macro replaces the HIDWORD and LODWORD macros for dumping these
11244 Updated the implementation of the Stall() operator to only call
11245 AcpiOsStall(), and also return an error if the operand is larger
11246 than 255. This preserves the required behavior of not
11247 relinquishing the processor, as would happen if AcpiOsSleep() was
11248 called for "long stalls".
11250 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
11251 initialized are now treated as NOOPs.
11253 Cleaned up a handful of warnings during 64-bit generation.
11255 Fixed a reported error where and incorrect GPE number was passed
11256 to the GPE dispatch handler. This value is only used for error
11257 output, however. Used this opportunity to clean up and streamline
11258 the GPE dispatch code.
11260 Code and Data Size: Current and previous core subsystem library
11261 sizes are shown below. These are the code and data sizes for the
11262 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11263 these values do not include any ACPI driver or OSPM code. The
11265 debug version of the code includes the debug output trace
11266 mechanism and has a much larger code and data size. Note that
11267 these values will vary depending on the efficiency of the compiler
11268 and the compiler options used during generation.
11270 Previous Release (20031002):
11271 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11272 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11274 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11275 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11278 2) iASL Compiler/Disassembler:
11280 Updated the iASL compiler to return an error if the operand to the
11281 Stall() operator is larger than 255.
11284 ----------------------------------------
11285 02 October 2003. Summary of changes for version 20031002:
11288 1) ACPI CA Core Subsystem:
11290 Fixed a problem with Index Fields where the index was not
11291 incremented for fields that require multiple writes to the
11292 index/data registers (Fields that are wider than the data
11295 Fixed a problem with all Field objects where a write could go
11296 beyond the end-of-field if the field was larger than the access
11297 granularity and therefore required multiple writes to complete the
11298 request. An extra write beyond the end of the field could happen
11301 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11302 would incorrectly be returned if the width of the Data Register
11303 was larger than the specified field access width.
11305 Completed fixes for LoadTable() and Unload() and verified their
11306 operation. Implemented full support for the "DdbHandle" object
11307 throughout the ACPI CA subsystem.
11309 Implemented full support for the MADT and ECDT tables in the ACPI
11310 CA header files. Even though these tables are not directly
11311 consumed by ACPI CA, the header definitions are useful for ACPI
11314 Integrated resource descriptor fixes posted to the Linux ACPI
11315 list. This included checks for minimum descriptor length, and
11316 support for trailing NULL strings within descriptors that have
11317 optional string elements.
11319 Code and Data Size: Current and previous core subsystem library
11320 sizes are shown below. These are the code and data sizes for the
11321 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11322 these values do not include any ACPI driver or OSPM code. The
11323 debug version of the code includes the debug output trace
11324 mechanism and has a much larger code and data size. Note that
11325 these values will vary depending on the efficiency of the compiler
11326 and the compiler options used during generation.
11328 Previous Release (20030918):
11329 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11330 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11332 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11333 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11338 Implemented detection of non-ASCII characters within the input
11339 source ASL file. This catches attempts to compile binary (AML)
11340 files early in the compile, with an informative error message.
11342 Fixed a problem where the disassembler would fault if the output
11343 filename could not be generated or if the output file could not be
11346 ----------------------------------------
11347 18 September 2003. Summary of changes for version 20030918:
11350 1) ACPI CA Core Subsystem:
11352 Found and fixed a longstanding problem with the late execution of
11353 the various deferred AML opcodes (such as Operation Regions,
11354 Buffer Fields, Buffers, and Packages). If the name string
11355 specified for the name of the new object placed the object in a
11356 scope other than the current scope, the initialization/execution
11357 of the opcode failed. The solution to this problem was to
11358 implement a mechanism where the late execution of such opcodes
11359 does not attempt to lookup/create the name a second time in an
11360 incorrect scope. This fixes the "region size computed
11361 incorrectly" problem.
11363 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11364 Global Lock AE_BAD_PARAMETER error.
11366 Fixed several 64-bit issues with prototypes, casting and data
11369 Removed duplicate prototype from acdisasm.h
11371 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11373 Code and Data Size: Current and previous core subsystem library
11374 sizes are shown below. These are the code and data sizes for the
11375 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11376 these values do not include any ACPI driver or OSPM code. The
11377 debug version of the code includes the debug output trace
11378 mechanism and has a much larger code and data size. Note that
11379 these values will vary depending on the efficiency of the compiler
11380 and the compiler options used during generation.
11384 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11385 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11387 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11388 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11393 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11394 correct sleep time in seconds.
11396 ----------------------------------------
11397 14 July 2003. Summary of changes for version 20030619:
11399 1) ACPI CA Core Subsystem:
11401 Parse SSDTs in order discovered, as opposed to reverse order
11404 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11411 Dynamically allocate SDT list (suggested by Andi Kleen)
11413 proc function return value cleanups (Andi Kleen)
11415 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11417 Make it so acpismp=force works (reported by Andrew Morton)
11420 ----------------------------------------
11421 19 June 2003. Summary of changes for version 20030619:
11423 1) ACPI CA Core Subsystem:
11425 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11427 Do not acquire a semaphore in the S5 shutdown path.
11429 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11431 Fix sleep/stall code reversal. (Andi Kleen)
11433 Revert a change having to do with control method calling
11438 acpiphp update (Takayoshi Kochi)
11440 Export acpi_disabled for sonypi (Stelian Pop)
11442 Mention acpismp=force in config help
11444 Re-add acpitable.c and acpismp=force. This improves backwards
11446 compatibility and also cleans up the code to a significant degree.
11448 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11450 ----------------------------------------
11451 22 May 2003. Summary of changes for version 20030522:
11453 1) ACPI CA Core Subsystem:
11455 Found and fixed a reported problem where an AE_NOT_FOUND error
11456 occurred occasionally during _BST evaluation. This turned out to
11457 be an Owner ID allocation issue where a called method did not get
11458 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11459 ID UINT16 would wraparound so that the ID would be the same as the
11460 caller's and the called method would delete the caller's
11463 Implemented extended error reporting for control methods that are
11464 aborted due to a run-time exception. Output includes the exact
11465 AML instruction that caused the method abort, a dump of the method
11466 locals and arguments at the time of the abort, and a trace of all
11467 nested control method calls.
11469 Modified the interpreter to allow the creation of buffers of zero
11470 length from the AML code. Implemented new code to ensure that no
11471 attempt is made to actually allocate a memory buffer (of length
11472 zero) - instead, a simple buffer object with a NULL buffer pointer
11473 and length zero is created. A warning is no longer issued when
11474 the AML attempts to create a zero-length buffer.
11476 Implemented a workaround for the "leading asterisk issue" in
11477 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11478 asterisk is automatically removed if present in any HID, UID, or
11479 CID strings. The iASL compiler will still flag this asterisk as
11482 Implemented full support for _CID methods that return a package of
11483 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11484 now additionally returns a device _CID list if present. This
11485 required a change to the external interface in order to pass an
11486 ACPI_BUFFER object as a parameter since the _CID list is of
11489 Fixed a problem with the new AE_SAME_HANDLER exception where
11490 handler initialization code did not know about this exception.
11492 Code and Data Size: Current and previous core subsystem library
11493 sizes are shown below. These are the code and data sizes for the
11494 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11495 these values do not include any ACPI driver or OSPM code. The
11496 debug version of the code includes the debug output trace
11497 mechanism and has a much larger code and data size. Note that
11498 these values will vary depending on the efficiency of the compiler
11499 and the compiler options used during generation.
11501 Previous Release (20030509):
11502 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11503 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11505 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11506 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11511 Fixed a bug in which we would reinitialize the ACPI interrupt
11512 after it was already working, thus disabling all ACPI and the IRQs
11513 for any other device sharing the interrupt. (Thanks to Stian
11516 Toshiba driver update (John Belmonte)
11518 Return only 0 or 1 for our interrupt handler status (Andrew
11524 Fixed a reported problem where multiple (nested) ElseIf()
11525 statements were not handled correctly by the compiler, resulting
11526 in incorrect warnings and incorrect AML code. This was a problem
11527 in both the ASL parser and the code generator.
11532 Added changes to existing interfaces, new exception codes, and new
11533 text concerning reference count object management versus garbage
11536 ----------------------------------------
11537 09 May 2003. Summary of changes for version 20030509.
11540 1) ACPI CA Core Subsystem:
11542 Changed the subsystem initialization sequence to hold off
11543 installation of address space handlers until the hardware has been
11544 initialized and the system has entered ACPI mode. This is because
11545 the installation of space handlers can cause _REG methods to be
11546 run. Previously, the _REG methods could potentially be run before
11547 ACPI mode was enabled.
11549 Fixed some memory leak issues related to address space handler and
11550 notify handler installation. There were some problems with the
11551 reference count mechanism caused by the fact that the handler
11552 objects are shared across several namespace objects.
11554 Fixed a reported problem where reference counts within the
11555 namespace were not properly updated when named objects created by
11556 method execution were deleted.
11558 Fixed a reported problem where multiple SSDTs caused a deletion
11559 issue during subsystem termination. Restructured the table data
11560 structures to simplify the linked lists and the related code.
11562 Fixed a problem where the table ID associated with secondary
11563 tables (SSDTs) was not being propagated into the namespace objects
11564 created by those tables. This would only present a problem for
11565 tables that are unloaded at run-time, however.
11567 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11568 type as the length parameter (instead of UINT32).
11570 Solved a long-standing problem where an ALREADY_EXISTS error
11571 appears on various systems. This problem could happen when there
11572 are multiple PCI_Config operation regions under a single PCI root
11573 bus. This doesn't happen very frequently, but there are some
11574 systems that do this in the ASL.
11576 Fixed a reported problem where the internal DeleteNode function
11577 was incorrectly handling the case where a namespace node was the
11578 first in the parent's child list, and had additional peers (not
11579 the only child, but first in the list of children.)
11581 Code and Data Size: Current core subsystem library sizes are shown
11582 below. These are the code and data sizes for the acpica.lib
11583 produced by the Microsoft Visual C++ 6.0 compiler, and these
11584 values do not include any ACPI driver or OSPM code. The debug
11585 version of the code includes the debug output trace mechanism and
11586 has a much larger code and data size. Note that these values will
11587 vary depending on the efficiency of the compiler and the compiler
11588 options used during generation.
11591 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11592 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11594 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11595 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11600 Allow ":" in OS override string (Ducrot Bruno)
11602 Kobject fix (Greg KH)
11605 3 iASL Compiler/Disassembler:
11607 Fixed a problem in the generation of the C source code files (AML
11608 is emitted in C source statements for BIOS inclusion) where the
11609 Ascii dump that appears within a C comment at the end of each line
11610 could cause a compile time error if the AML sequence happens to
11611 have an open comment or close comment sequence embedded.
11614 ----------------------------------------
11615 24 April 2003. Summary of changes for version 20030424.
11618 1) ACPI CA Core Subsystem:
11620 Support for big-endian systems has been implemented. Most of the
11621 support has been invisibly added behind big-endian versions of the
11622 ACPI_MOVE_* macros.
11624 Fixed a problem in AcpiHwDisableGpeBlock() and
11625 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11626 low level hardware write routine. The offset parameter was
11627 actually eliminated from the low level read/write routines because
11628 they had become obsolete.
11630 Fixed a problem where a handler object was deleted twice during
11631 the removal of a fixed event handler.
11636 A fix for SMP systems with link devices was contributed by
11640 (2.5) Return whether we handled the interrupt in our IRQ handler.
11641 (Linux ISRs no longer return void, so we can propagate the handler
11642 return value from the ACPI CA core back to the OS.)
11648 The ACPI CA Programmer Reference has been updated to reflect new
11649 interfaces and changes to existing interfaces.
11651 ----------------------------------------
11652 28 March 2003. Summary of changes for version 20030328.
11654 1) ACPI CA Core Subsystem:
11656 The GPE Block Device support has been completed. New interfaces
11657 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11658 interfaces (enable, disable, clear, getstatus) have been split
11659 into separate interfaces for Fixed Events and General Purpose
11660 Events (GPEs) in order to support GPE Block Devices properly.
11662 Fixed a problem where the error message "Failed to acquire
11663 semaphore" would appear during operations on the embedded
11666 Code and Data Size: Current core subsystem library sizes are shown
11667 below. These are the code and data sizes for the acpica.lib
11668 produced by the Microsoft Visual C++ 6.0 compiler, and these
11669 values do not include any ACPI driver or OSPM code. The debug
11670 version of the code includes the debug output trace mechanism and
11671 has a much larger code and data size. Note that these values will
11672 vary depending on the efficiency of the compiler and the compiler
11673 options used during generation.
11676 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11677 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11679 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11680 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11683 ----------------------------------------
11684 28 February 2003. Summary of changes for version 20030228.
11687 1) ACPI CA Core Subsystem:
11689 The GPE handling and dispatch code has been completely overhauled
11690 in preparation for support of GPE Block Devices (ID ACPI0006).
11691 This affects internal data structures and code only; there should
11692 be no differences visible externally. One new file has been
11695 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11696 fields that are used to determine the GPE block lengths. The
11697 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11698 structures are ignored. This is per the ACPI specification but it
11699 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11700 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11702 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11703 register to look at the SCI_EN bit. On some machines, this read
11704 causes an SMI event and greatly slows down SCI events. (This may
11705 in fact be the cause of slow battery status response on some
11708 Fixed a problem where a store of a NULL string to a package object
11709 could cause the premature deletion of the object. This was seen
11710 during execution of the battery _BIF method on some systems,
11711 resulting in no battery data being returned.
11713 Added AcpiWalkResources interface to simplify parsing of resource
11716 Code and Data Size: Current core subsystem library sizes are shown
11717 below. These are the code and data sizes for the acpica.lib
11718 produced by the Microsoft Visual C++ 6.0 compiler, and these
11719 values do not include any ACPI driver or OSPM code. The debug
11720 version of the code includes the debug output trace mechanism and
11721 has a much larger code and data size. Note that these values will
11722 vary depending on the efficiency of the compiler and the compiler
11723 options used during generation.
11726 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11727 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11729 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11730 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11735 S3 fixes (Ole Rohne)
11737 Update ACPI PHP driver with to use new acpi_walk_resource API
11740 Add S4BIOS support (Pavel Machek)
11742 Map in entire table before performing checksum (John Stultz)
11744 Expand the mem= cmdline to allow the specification of reserved and
11745 ACPI DATA blocks (Pavel Machek)
11747 Never use ACPI on VISWS
11749 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
11751 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
11752 causing us to think that some systems support C2 when they really
11755 Do not count processor objects for non-present CPUs (Thanks to
11761 Fixed a problem where ASL include files could not be found and
11764 Added support for the _PDC reserved name.
11767 ----------------------------------------
11768 22 January 2003. Summary of changes for version 20030122.
11771 1) ACPI CA Core Subsystem:
11773 Added a check for constructs of the form: Store (Local0, Local0)
11774 where Local0 is not initialized. Apparently, some BIOS
11775 programmers believe that this is a NOOP. Since this store doesn't
11776 do anything anyway, the new prototype behavior will ignore this
11777 error. This is a case where we can relax the strict checking in
11778 the interpreter in the name of compatibility.
11783 The AcpiSrc Source Conversion Utility has been released with the
11784 Linux package for the first time. This is the utility that is
11785 used to convert the ACPI CA base source code to the Linux version.
11787 (Both) Handle P_BLK lengths shorter than 6 more gracefully
11789 (Both) Move more headers to include/acpi, and delete an unused
11792 (Both) Move drivers/acpi/include directory to include/acpi
11794 (Both) Boot functions don't use cmdline, so don't pass it around
11796 (Both) Remove include of unused header (Adrian Bunk)
11798 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
11800 former now also includes the latter, acpiphp.h only needs the one,
11803 (2.5) Make it possible to select method of bios restoring after S3
11804 resume. [=> no more ugly ifdefs] (Pavel Machek)
11806 (2.5) Make proc write interfaces work (Pavel Machek)
11808 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
11810 (2.5) Break out ACPI Perf code into its own module, under cpufreq
11811 (Dominik Brodowski)
11813 (2.4) S4BIOS support (Ducrot Bruno)
11815 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
11821 Added support to disassemble SSDT and PSDTs.
11823 Implemented support to obtain SSDTs from the Windows registry if
11827 ----------------------------------------
11828 09 January 2003. Summary of changes for version 20030109.
11830 1) ACPI CA Core Subsystem:
11832 Changed the behavior of the internal Buffer-to-String conversion
11833 function. The current ACPI specification states that the contents
11834 of the buffer are "converted to a string of two-character
11835 hexadecimal numbers, each separated by a space". Unfortunately,
11836 this definition is not backwards compatible with existing ACPI 1.0
11837 implementations (although the behavior was not defined in the ACPI
11838 1.0 specification). The new behavior simply copies data from the
11839 buffer to the string until a null character is found or the end of
11840 the buffer is reached. The new String object is always null
11841 terminated. This problem was seen during the generation of _BIF
11842 battery data where incorrect strings were returned for battery
11843 type, etc. This will also require an errata to the ACPI
11846 Renamed all instances of NATIVE_UINT and NATIVE_INT to
11847 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
11849 Copyright in all module headers (both Linux and non-Linux) has be
11852 Code and Data Size: Current core subsystem library sizes are shown
11853 below. These are the code and data sizes for the acpica.lib
11854 produced by the Microsoft Visual C++ 6.0 compiler, and these
11855 values do not include any ACPI driver or OSPM code. The debug
11856 version of the code includes the debug output trace mechanism and
11857 has a much larger code and data size. Note that these values will
11858 vary depending on the efficiency of the compiler and the compiler
11859 options used during generation.
11862 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11863 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11865 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11866 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11871 Fixed an oops on module insertion/removal (Matthew Tippett)
11873 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
11875 (2.5) Replace pr_debug (Randy Dunlap)
11877 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
11879 (Both) Eliminate spawning of thread from timer callback, in favor
11882 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
11884 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
11886 (Both) Add missing statics to button.c (Pavel Machek)
11888 Several changes have been made to the source code translation
11889 utility that generates the Linux Code in order to make the code
11892 All typedefs on structs and unions have been removed in keeping
11893 with the Linux coding style.
11895 Removed the non-Linux SourceSafe module revision number from each
11898 Completed major overhaul of symbols to be lowercased for linux.
11899 Doubled the number of symbols that are lowercased.
11901 Fixed a problem where identifiers within procedure headers and
11902 within quotes were not fully lower cased (they were left with a
11905 Some C macros whose only purpose is to allow the generation of 16-
11906 bit code are now completely removed in the Linux code, increasing
11907 readability and maintainability.
11909 ----------------------------------------
11911 12 December 2002. Summary of changes for version 20021212.
11914 1) ACPI CA Core Subsystem:
11916 Fixed a problem where the creation of a zero-length AML Buffer
11917 would cause a fault.
11919 Fixed a problem where a Buffer object that pointed to a static AML
11920 buffer (in an ACPI table) could inadvertently be deleted, causing
11923 Fixed a problem where a user buffer (passed in to the external
11924 ACPI CA interfaces) could be overwritten if the buffer was too
11925 small to complete the operation, causing memory corruption.
11927 Fixed a problem in the Buffer-to-String conversion code where a
11928 string of length one was always returned, regardless of the size
11929 of the input Buffer object.
11931 Removed the NATIVE_CHAR data type across the entire source due to
11932 lack of need and lack of consistent use.
11934 Code and Data Size: Current core subsystem library sizes are shown
11935 below. These are the code and data sizes for the acpica.lib
11936 produced by the Microsoft Visual C++ 6.0 compiler, and these
11937 values do not include any ACPI driver or OSPM code. The debug
11938 version of the code includes the debug output trace mechanism and
11939 has a much larger code and data size. Note that these values will
11940 vary depending on the efficiency of the compiler and the compiler
11941 options used during generation.
11944 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11945 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11947 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11948 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11951 ----------------------------------------
11952 05 December 2002. Summary of changes for version 20021205.
11954 1) ACPI CA Core Subsystem:
11956 Fixed a problem where a store to a String or Buffer object could
11957 cause corruption of the DSDT if the object type being stored was
11958 the same as the target object type and the length of the object
11959 being stored was equal to or smaller than the original (existing)
11960 target object. This was seen to cause corruption of battery _BIF
11961 buffers if the _BIF method modified the buffer on the fly.
11963 Fixed a problem where an internal error was generated if a control
11964 method invocation was used in an OperationRegion, Buffer, or
11965 Package declaration. This was caused by the deferred parsing of
11966 the control method and thus the deferred creation of the internal
11967 method object. The solution to this problem was to create the
11968 internal method object at the moment the method is encountered in
11969 the first pass - so that subsequent references to the method will
11970 able to obtain the required parameter count and thus properly
11971 parse the method invocation. This problem presented itself as an
11972 AE_AML_INTERNAL during the pass 1 parse phase during table load.
11974 Fixed a problem where the internal String object copy routine did
11975 not always allocate sufficient memory for the target String object
11976 and caused memory corruption. This problem was seen to cause
11977 "Allocation already present in list!" errors as memory allocation
11980 Implemented a new function for the evaluation of namespace objects
11981 that allows the specification of the allowable return object
11982 types. This simplifies a lot of code that checks for a return
11983 object of one or more specific objects returned from the
11984 evaluation (such as _STA, etc.) This may become and external
11985 function if it would be useful to ACPI-related drivers.
11987 Completed another round of prefixing #defines with "ACPI_" for
11990 Completed additional code restructuring to allow more modular
11991 linking for iASL compiler and AcpiExec. Several files were split
11992 creating new files. New files: nsparse.c dsinit.c evgpe.c
11994 Implemented an abort mechanism to terminate an executing control
11995 method via the AML debugger. This feature is useful for debugging
11996 control methods that depend (wait) for specific hardware
11999 Code and Data Size: Current core subsystem library sizes are shown
12000 below. These are the code and data sizes for the acpica.lib
12001 produced by the Microsoft Visual C++ 6.0 compiler, and these
12002 values do not include any ACPI driver or OSPM code. The debug
12003 version of the code includes the debug output trace mechanism and
12004 has a much larger code and data size. Note that these values will
12005 vary depending on the efficiency of the compiler and the compiler
12006 options used during generation.
12009 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12010 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12012 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12013 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12016 2) iASL Compiler/Disassembler
12018 Fixed a compiler code generation problem for "Interrupt" Resource
12019 Descriptors. If specified in the ASL, the optional "Resource
12020 Source Index" and "Resource Source" fields were not inserted into
12021 the correct location within the AML resource descriptor, creating
12022 an invalid descriptor.
12024 Fixed a disassembler problem for "Interrupt" resource descriptors.
12025 The optional "Resource Source Index" and "Resource Source" fields
12029 ----------------------------------------
12030 22 November 2002. Summary of changes for version 20021122.
12033 1) ACPI CA Core Subsystem:
12035 Fixed a reported problem where an object stored to a Method Local
12036 or Arg was not copied to a new object during the store - the
12037 object pointer was simply copied to the Local/Arg. This caused
12038 all subsequent operations on the Local/Arg to also affect the
12039 original source of the store operation.
12041 Fixed a problem where a store operation to a Method Local or Arg
12042 was not completed properly if the Local/Arg contained a reference
12043 (from RefOf) to a named field. The general-purpose store-to-
12044 namespace-node code is now used so that this case is handled
12047 Fixed a problem where the internal object copy routine would cause
12048 a protection fault if the object being copied was a Package and
12049 contained either 1) a NULL package element or 2) a nested sub-
12052 Fixed a problem with the GPE initialization that resulted from an
12053 ambiguity in the ACPI specification. One section of the
12054 specification states that both the address and length of the GPE
12055 block must be zero if the block is not supported. Another section
12056 implies that only the address need be zero if the block is not
12057 supported. The code has been changed so that both the address and
12058 the length must be non-zero to indicate a valid GPE block (i.e.,
12059 if either the address or the length is zero, the GPE block is
12062 Code and Data Size: Current core subsystem library sizes are shown
12063 below. These are the code and data sizes for the acpica.lib
12064 produced by the Microsoft Visual C++ 6.0 compiler, and these
12065 values do not include any ACPI driver or OSPM code. The debug
12066 version of the code includes the debug output trace mechanism and
12067 has a much larger code and data size. Note that these values will
12068 vary depending on the efficiency of the compiler and the compiler
12069 options used during generation.
12072 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12073 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12075 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12076 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12081 Cleaned up EC driver. Exported an external EC read/write
12082 interface. By going through this, other drivers (most notably
12083 sonypi) will be able to serialize access to the EC.
12086 3) iASL Compiler/Disassembler
12088 Implemented support to optionally generate include files for both
12089 ASM and C (the -i switch). This simplifies BIOS development by
12090 automatically creating include files that contain external
12091 declarations for the symbols that are created within the
12093 (optionally generated) ASM and C AML source files.
12096 ----------------------------------------
12097 15 November 2002. Summary of changes for version 20021115.
12099 1) ACPI CA Core Subsystem:
12101 Fixed a memory leak problem where an error during resolution of
12103 method arguments during a method invocation from another method
12104 failed to cleanup properly by deleting all successfully resolved
12107 Fixed a problem where the target of the Index() operator was not
12108 correctly constructed if the source object was a package. This
12109 problem has not been detected because the use of a target operand
12110 with Index() is very rare.
12112 Fixed a problem with the Index() operator where an attempt was
12113 made to delete the operand objects twice.
12115 Fixed a problem where an attempt was made to delete an operand
12116 twice during execution of the CondRefOf() operator if the target
12119 Implemented the first of perhaps several internal create object
12120 functions that create and initialize a specific object type. This
12121 consolidates duplicated code wherever the object is created, thus
12122 shrinking the size of the subsystem.
12124 Implemented improved debug/error messages for errors that occur
12125 during nested method invocations. All executing method pathnames
12126 are displayed (with the error) as the call stack is unwound - thus
12129 Fixed a problem introduced in the 10/02 release that caused
12130 premature deletion of a buffer object if a buffer was used as an
12131 ASL operand where an integer operand is required (Thus causing an
12132 implicit object conversion from Buffer to Integer.) The change in
12133 the 10/02 release was attempting to fix a memory leak (albeit
12136 Code and Data Size: Current core subsystem library sizes are shown
12137 below. These are the code and data sizes for the acpica.lib
12138 produced by the Microsoft Visual C++ 6.0 compiler, and these
12139 values do not include any ACPI driver or OSPM code. The debug
12140 version of the code includes the debug output trace mechanism and
12141 has a much larger code and data size. Note that these values will
12142 vary depending on the efficiency of the compiler and the compiler
12143 options used during generation.
12146 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12147 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12149 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12150 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12155 Changed the implementation of the ACPI semaphores to use down()
12156 instead of down_interruptable(). It is important that the
12157 execution of ACPI control methods not be interrupted by signals.
12158 Methods must run to completion, or the system may be left in an
12159 unknown/unstable state.
12161 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
12165 3) iASL Compiler/Disassembler
12168 Changed the default location of output files. All output files
12169 are now placed in the current directory by default instead of in
12170 the directory of the source file. This change may affect some
12171 existing makefiles, but it brings the behavior of the compiler in
12172 line with other similar tools. The location of the output files
12173 can be overridden with the -p command line switch.
12176 ----------------------------------------
12177 11 November 2002. Summary of changes for version 20021111.
12180 0) ACPI Specification 2.0B is released and is now available at:
12181 http://www.acpi.info/index.html
12184 1) ACPI CA Core Subsystem:
12186 Implemented support for the ACPI 2.0 SMBus Operation Regions.
12187 This includes the early detection and handoff of the request to
12188 the SMBus region handler (avoiding all of the complex field
12189 support code), and support for the bidirectional return packet
12190 from an SMBus write operation. This paves the way for the
12191 development of SMBus drivers in each host operating system.
12193 Fixed a problem where the semaphore WAIT_FOREVER constant was
12194 defined as 32 bits, but must be 16 bits according to the ACPI
12195 specification. This had the side effect of causing ASL
12196 Mutex/Event timeouts even though the ASL code requested a wait
12197 forever. Changed all internal references to the ACPI timeout
12198 parameter to 16 bits to prevent future problems. Changed the name
12199 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
12201 Code and Data Size: Current core subsystem library sizes are shown
12202 below. These are the code and data sizes for the acpica.lib
12203 produced by the Microsoft Visual C++ 6.0 compiler, and these
12204 values do not include any ACPI driver or OSPM code. The debug
12205 version of the code includes the debug output trace mechanism and
12206 has a much larger code and data size. Note that these values will
12207 vary depending on the efficiency of the compiler and the compiler
12208 options used during generation.
12211 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12212 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12214 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12215 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12220 Module loading/unloading fixes (John Cagle)
12223 3) iASL Compiler/Disassembler
12225 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
12227 Implemented support for the disassembly of all SMBus protocol
12228 keywords (SMBQuick, SMBWord, etc.)
12230 ----------------------------------------
12231 01 November 2002. Summary of changes for version 20021101.
12234 1) ACPI CA Core Subsystem:
12236 Fixed a problem where platforms that have a GPE1 block but no GPE0
12237 block were not handled correctly. This resulted in a "GPE
12238 overlap" error message. GPE0 is no longer required.
12240 Removed code added in the previous release that inserted nodes
12241 into the namespace in alphabetical order. This caused some side-
12242 effects on various machines. The root cause of the problem is
12243 still under investigation since in theory, the internal ordering
12244 of the namespace nodes should not matter.
12247 Enhanced error reporting for the case where a named object is not
12248 found during control method execution. The full ACPI namepath
12249 (name reference) of the object that was not found is displayed in
12252 Note: as a result of the overhaul of the namespace object types in
12253 the previous release, the namespace nodes for the predefined
12254 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
12255 instead of ACPI_TYPE_ANY. This simplifies the namespace
12256 management code but may affect code that walks the namespace tree
12257 looking for specific object types.
12259 Code and Data Size: Current core subsystem library sizes are shown
12260 below. These are the code and data sizes for the acpica.lib
12261 produced by the Microsoft Visual C++ 6.0 compiler, and these
12262 values do not include any ACPI driver or OSPM code. The debug
12263 version of the code includes the debug output trace mechanism and
12264 has a much larger code and data size. Note that these values will
12265 vary depending on the efficiency of the compiler and the compiler
12266 options used during generation.
12269 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12270 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12272 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12273 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12278 Fixed a problem introduced in the previous release where the
12279 Processor and Thermal objects were not recognized and installed in
12280 /proc. This was related to the scope type change described above.
12283 3) iASL Compiler/Disassembler
12285 Implemented the -g option to get all of the required ACPI tables
12286 from the registry and save them to files (Windows version of the
12287 compiler only.) The required tables are the FADT, FACS, and DSDT.
12289 Added ACPI table checksum validation during table disassembly in
12290 order to catch corrupted tables.
12293 ----------------------------------------
12294 22 October 2002. Summary of changes for version 20021022.
12296 1) ACPI CA Core Subsystem:
12298 Implemented a restriction on the Scope operator that the target
12299 must already exist in the namespace at the time the operator is
12300 encountered (during table load or method execution). In other
12301 words, forward references are not allowed and Scope() cannot
12302 create a new object. This changes the previous behavior where the
12303 interpreter would create the name if not found. This new behavior
12304 correctly enables the search-to-root algorithm during namespace
12305 lookup of the target name. Because of this upsearch, this fixes
12306 the known Compaq _SB_.OKEC problem and makes both the AML
12307 interpreter and iASL compiler compatible with other ACPI
12310 Completed a major overhaul of the internal ACPI object types for
12311 the ACPI Namespace and the associated operand objects. Many of
12312 these types had become obsolete with the introduction of the two-
12313 pass namespace load. This cleanup simplifies the code and makes
12314 the entire namespace load mechanism much clearer and easier to
12317 Improved debug output for tracking scope opening/closing to help
12318 diagnose scoping issues. The old scope name as well as the new
12319 scope name are displayed. Also improved error messages for
12320 problems with ASL Mutex objects and error messages for GPE
12323 Cleaned up the namespace dump code, removed obsolete code.
12325 All string output (for all namespace/object dumps) now uses the
12326 common ACPI string output procedure which handles escapes properly
12327 and does not emit non-printable characters.
12329 Fixed some issues with constants in the 64-bit version of the
12330 local C library (utclib.c)
12335 EC Driver: No longer attempts to acquire the Global Lock at
12339 3) iASL Compiler/Disassembler
12341 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12342 2 opcodes outside of a control method. This means that the
12343 "executable" operators (versus the "namespace" operators) cannot
12344 be used at the table level; they can only be used within a control
12347 Implemented the restriction on the Scope() operator where the
12348 target must already exist in the namespace at the time the
12349 operator is encountered (during ASL compilation). In other words,
12350 forward references are not allowed and Scope() cannot create a new
12351 object. This makes the iASL compiler compatible with other ACPI
12352 implementations and makes the Scope() implementation adhere to the
12353 ACPI specification.
12355 Fixed a problem where namepath optimization for the Alias operator
12356 was optimizing the wrong path (of the two namepaths.) This caused
12357 a "Missing alias link" error message.
12359 Fixed a problem where an "unknown reserved name" warning could be
12360 incorrectly generated for names like "_SB" when the trailing
12361 underscore is not used in the original ASL.
12363 Fixed a problem where the reserved name check did not handle
12364 NamePaths with multiple NameSegs correctly. The first nameseg of
12365 the NamePath was examined instead of the last NameSeg.
12368 ----------------------------------------
12370 02 October 2002. Summary of changes for this release.
12373 1) ACPI CA Core Subsystem version 20021002:
12375 Fixed a problem where a store/copy of a string to an existing
12376 string did not always set the string length properly in the String
12379 Fixed a reported problem with the ToString operator where the
12380 behavior was identical to the ToHexString operator instead of just
12381 simply converting a raw buffer to a string data type.
12383 Fixed a problem where CopyObject and the other "explicit"
12384 conversion operators were not updating the internal namespace node
12385 type as part of the store operation.
12387 Fixed a memory leak during implicit source operand conversion
12388 where the original object was not deleted if it was converted to a
12389 new object of a different type.
12391 Enhanced error messages for all problems associated with namespace
12392 lookups. Common procedure generates and prints the lookup name as
12393 well as the formatted status.
12395 Completed implementation of a new design for the Alias support
12396 within the namespace. The existing design did not handle the case
12397 where a new object was assigned to one of the two names due to the
12398 use of an explicit conversion operator, resulting in the two names
12399 pointing to two different objects. The new design simply points
12400 the Alias name to the original name node - not to the object.
12401 This results in a level of indirection that must be handled in the
12402 name resolution mechanism.
12404 Code and Data Size: Current core subsystem library sizes are shown
12405 below. These are the code and data sizes for the acpica.lib
12406 produced by the Microsoft Visual C++ 6.0 compiler, and these
12407 values do not include any ACPI driver or OSPM code. The debug
12408 version of the code includes the debug output trace mechanism and
12409 has a larger code and data size. Note that these values will vary
12410 depending on the efficiency of the compiler and the compiler
12411 options used during generation.
12414 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12415 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12417 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12418 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12423 Initialize thermal driver's timer before it is used. (Knut
12426 Allow handling negative celsius values. (Kochi Takayoshi)
12428 Fix thermal management and make trip points. R/W (Pavel Machek)
12430 Fix /proc/acpi/sleep. (P. Christeas)
12432 IA64 fixes. (David Mosberger)
12434 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12436 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12440 3) iASL Compiler/Disassembler
12442 Clarified some warning/error messages.
12445 ----------------------------------------
12446 18 September 2002. Summary of changes for this release.
12449 1) ACPI CA Core Subsystem version 20020918:
12451 Fixed a reported problem with reference chaining (via the Index()
12452 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12453 The definition of these operators includes the dereferencing of
12454 all chained references to return information on the base object.
12456 Fixed a problem with stores to indexed package elements - the
12457 existing code would not complete the store if an "implicit
12458 conversion" was not performed. In other words, if the existing
12459 object (package element) was to be replaced completely, the code
12460 didn't handle this case.
12462 Relaxed typechecking on the ASL "Scope" operator to allow the
12463 target name to refer to an object of type Integer, String, or
12464 Buffer, in addition to the scoping object types (Device,
12465 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12466 This allows existing AML code that has workarounds for a bug in
12467 Windows to function properly. A warning is issued, however. This
12468 affects both the AML interpreter and the iASL compiler. Below is
12469 an example of this type of ASL code:
12475 Fixed some reported problems with 64-bit integer support in the
12476 local implementation of C library functions (clib.c)
12481 Use ACPI fix map region instead of IOAPIC region, since it is
12482 undefined in non-SMP.
12484 Ensure that the SCI has the proper polarity and trigger, even on
12485 systems that do not have an interrupt override entry in the MADT.
12487 2.5 big driver reorganization (Pat Mochel)
12489 Use early table mapping code from acpitable.c (Andi Kleen)
12491 New blacklist entries (Andi Kleen)
12493 Blacklist improvements. Split blacklist code out into a separate
12494 file. Move checking the blacklist to very early. Previously, we
12495 would use ACPI tables, and then halfway through init, check the
12496 blacklist -- too late. Now, it's early enough to completely fall-
12500 3) iASL Compiler/Disassembler version 20020918:
12502 Fixed a problem where the typechecking code didn't know that an
12503 alias could point to a method. In other words, aliases were not
12504 being dereferenced during typechecking.
12507 ----------------------------------------
12508 29 August 2002. Summary of changes for this release.
12510 1) ACPI CA Core Subsystem Version 20020829:
12512 If the target of a Scope() operator already exists, it must be an
12513 object type that actually opens a scope -- such as a Device,
12514 Method, Scope, etc. This is a fatal runtime error. Similar error
12515 check has been added to the iASL compiler also.
12517 Tightened up the namespace load to disallow multiple names in the
12518 same scope. This previously was allowed if both objects were of
12519 the same type. (i.e., a lookup was the same as entering a new
12525 Ensure that the ACPI interrupt has the proper trigger and
12528 local_irq_disable is extraneous. (Matthew Wilcox)
12530 Make "acpi=off" actually do what it says, and not use the ACPI
12531 interpreter *or* the tables.
12533 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12537 3) iASL Compiler/Disassembler Version 20020829:
12539 Implemented namepath optimization for name declarations. For
12540 example, a declaration like "Method (\_SB_.ABCD)" would get
12541 optimized to "Method (ABCD)" if the declaration is within the
12542 \_SB_ scope. This optimization is in addition to the named
12543 reference path optimization first released in the previous
12544 version. This would seem to complete all possible optimizations
12545 for namepaths within the ASL/AML.
12547 If the target of a Scope() operator already exists, it must be an
12548 object type that actually opens a scope -- such as a Device,
12549 Method, Scope, etc.
12551 Implemented a check and warning for unreachable code in the same
12552 block below a Return() statement.
12554 Fixed a problem where the listing file was not generated if the
12555 compiler aborted if the maximum error count was exceeded (200).
12557 Fixed a problem where the typechecking of method return values was
12558 broken. This includes the check for a return value when the
12559 method is invoked as a TermArg (a return value is expected.)
12561 Fixed a reported problem where EOF conditions during a quoted
12562 string or comment caused a fault.
12565 ----------------------------------------
12566 15 August 2002. Summary of changes for this release.
12568 1) ACPI CA Core Subsystem Version 20020815:
12570 Fixed a reported problem where a Store to a method argument that
12571 contains a reference did not perform the indirect store correctly.
12572 This problem was created during the conversion to the new
12573 reference object model - the indirect store to a method argument
12574 code was not updated to reflect the new model.
12576 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12577 handle corner cases, and improve code legibility (Kochi Takayoshi)
12579 Fixed a problem with the pathname parsing for the carat (^)
12580 prefix. The heavy use of the carat operator by the new namepath
12581 optimization in the iASL compiler uncovered a problem with the AML
12582 interpreter handling of this prefix. In the case where one or
12583 more carats precede a single nameseg, the nameseg was treated as
12584 standalone and the search rule (to root) was inadvertently
12585 applied. This could cause both the iASL compiler and the
12586 interpreter to find the wrong object or to miss the error that
12587 should occur if the object does not exist at that exact pathname.
12589 Found and fixed the problem where the HP Pavilion DSDT would not
12590 load. This was a relatively minor tweak to the table loading code
12591 (a problem caused by the unexpected encounter with a method
12592 invocation not within a control method), but it does not solve the
12593 overall issue of the execution of AML code at the table level.
12594 This investigation is still ongoing.
12596 Code and Data Size: Current core subsystem library sizes are shown
12597 below. These are the code and data sizes for the acpica.lib
12598 produced by the Microsoft Visual C++ 6.0 compiler, and these
12599 values do not include any ACPI driver or OSPM code. The debug
12600 version of the code includes the debug output trace mechanism and
12601 has a larger code and data size. Note that these values will vary
12602 depending on the efficiency of the compiler and the compiler
12603 options used during generation.
12606 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12607 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12609 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12610 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12615 Remove redundant slab.h include (Brad Hards)
12617 Fix several bugs in thermal.c (Herbert Nachtnebel)
12619 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12621 Change acpi_system_suspend to use updated irq functions (Pavel
12624 Export acpi_get_firmware_table (Matthew Wilcox)
12626 Use proper root proc entry for ACPI (Kochi Takayoshi)
12628 Fix early-boot table parsing (Bjorn Helgaas)
12631 3) iASL Compiler/Disassembler
12633 Reworked the compiler options to make them more consistent and to
12634 use two-letter options where appropriate. We were running out of
12635 sensible letters. This may break some makefiles, so check the
12636 current options list by invoking the compiler with no parameters.
12638 Completed the design and implementation of the ASL namepath
12639 optimization option for the compiler. This option optimizes all
12640 references to named objects to the shortest possible path. The
12641 first attempt tries to utilize a single nameseg (4 characters) and
12642 the "search-to-root" algorithm used by the interpreter. If that
12643 cannot be used (because either the name is not in the search path
12644 or there is a conflict with another object with the same name),
12645 the pathname is optimized using the carat prefix (usually a
12646 shorter string than specifying the entire path from the root.)
12648 Implemented support to obtain the DSDT from the Windows registry
12649 (when the disassembly option is specified with no input file).
12650 Added this code as the implementation for AcpiOsTableOverride in
12651 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12652 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12653 function in the DOS OSL to make the disassembler truly OS
12656 Implemented a new option to disassemble and compile in one step.
12657 When used without an input filename, this option will grab the
12658 DSDT from the local machine, disassemble it, and compile it in one
12661 Added a warning message for invalid escapes (a backslash followed
12662 by any character other than the allowable escapes). This catches
12663 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12665 Also, there are numerous instances in the ACPI specification where
12668 Added a compiler option to disable all optimizations. This is
12669 basically the "compatibility mode" because by using this option,
12670 the AML code will come out exactly the same as other ASL
12673 Added error messages for incorrectly ordered dependent resource
12674 functions. This includes: missing EndDependentFn macro at end of
12675 dependent resource list, nested dependent function macros (both
12676 start and end), and missing StartDependentFn macro. These are
12677 common errors that should be caught at compile time.
12679 Implemented _OSI support for the disassembler and compiler. _OSI
12680 must be included in the namespace for proper disassembly (because
12681 the disassembler must know the number of arguments.)
12683 Added an "optimization" message type that is optional (off by
12684 default). This message is used for all optimizations - including
12685 constant folding, integer optimization, and namepath optimization.
12687 ----------------------------------------
12688 25 July 2002. Summary of changes for this release.
12691 1) ACPI CA Core Subsystem Version 20020725:
12693 The AML Disassembler has been enhanced to produce compilable ASL
12694 code and has been integrated into the iASL compiler (see below) as
12695 well as the single-step disassembly for the AML debugger and the
12696 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12697 resource templates and macros are fully supported. The
12698 disassembler has been tested on over 30 different AML files,
12699 producing identical AML when the resulting disassembled ASL file
12700 is recompiled with the same ASL compiler.
12702 Modified the Resource Manager to allow zero interrupts and zero
12703 dma channels during the GetCurrentResources call. This was
12704 causing problems on some platforms.
12706 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12707 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12710 Code and Data Size: Current core subsystem library sizes are shown
12711 below. These are the code and data sizes for the acpica.lib
12712 produced by the Microsoft Visual C++ 6.0 compiler, and these
12713 values do not include any ACPI driver or OSPM code. The debug
12714 version of the code includes the debug output trace mechanism and
12715 has a larger code and data size. Note that these values will vary
12716 depending on the efficiency of the compiler and the compiler
12717 options used during generation.
12720 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12721 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12723 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12724 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12729 Fixed a panic in the EC driver (Dominik Brodowski)
12731 Implemented checksum of the R/XSDT itself during Linux table scan
12737 The AML disassembler is integrated into the compiler. The "-d"
12738 option invokes the disassembler to completely disassemble an
12739 input AML file, producing as output a text ASL file with the
12740 extension ".dsl" (to avoid name collisions with existing .asl
12741 source files.) A future enhancement will allow the disassembler
12742 to obtain the BIOS DSDT from the registry under Windows.
12744 Fixed a problem with the VendorShort and VendorLong resource
12745 descriptors where an invalid AML sequence was created.
12747 Implemented a fix for BufferData term in the ASL parser. It was
12748 inadvertently defined twice, allowing invalid syntax to pass and
12749 causing reduction conflicts.
12751 Fixed a problem where the Ones opcode could get converted to a
12752 value of zero if "Ones" was used where a byte, word or dword value
12753 was expected. The 64-bit value is now truncated to the correct
12754 size with the correct value.
12758 ----------------------------------------
12759 02 July 2002. Summary of changes for this release.
12762 1) ACPI CA Core Subsystem Version 20020702:
12764 The Table Manager code has been restructured to add several new
12765 features. Tables that are not required by the core subsystem
12766 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
12767 validated in any way and are returned from AcpiGetFirmwareTable if
12768 requested. The AcpiOsTableOverride interface is now called for
12769 each table that is loaded by the subsystem in order to allow the
12770 host to override any table it chooses. Previously, only the DSDT
12771 could be overridden. Added one new files, tbrsdt.c and
12774 Fixed a problem with the conversion of internal package objects to
12775 external objects (when a package is returned from a control
12776 method.) The return buffer length was set to zero instead of the
12777 proper length of the package object.
12779 Fixed a reported problem with the use of the RefOf and DeRefOf
12780 operators when passing reference arguments to control methods. A
12781 new type of Reference object is used internally for references
12782 produced by the RefOf operator.
12784 Added additional error messages in the Resource Manager to explain
12785 AE_BAD_DATA errors when they occur during resource parsing.
12787 Split the AcpiEnableSubsystem into two primitives to enable a
12788 finer granularity initialization sequence. These two calls should
12789 be called in this order: AcpiEnableSubsystem (flags),
12790 AcpiInitializeObjects (flags). The flags parameter remains the
12796 Updated the ACPI utilities module to understand the new style of
12797 fully resolved package objects that are now returned from the core
12798 subsystem. This eliminates errors of the form:
12800 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
12801 acpi_utils-0430 [145] acpi_evaluate_reference:
12802 Invalid element in package (not a device reference)
12804 The method evaluation utility uses the new buffer allocation
12805 scheme instead of calling AcpiEvaluate Object twice.
12807 Added support for ECDT. This allows the use of the Embedded
12809 Controller before the namespace has been fully initialized, which
12810 is necessary for ACPI 2.0 support, and for some laptops to
12811 initialize properly. (Laptops using ECDT are still rare, so only
12812 limited testing was performed of the added functionality.)
12814 Fixed memory leaks in the EC driver.
12816 Eliminated a brittle code structure in acpi_bus_init().
12818 Eliminated the acpi_evaluate() helper function in utils.c. It is
12819 no longer needed since acpi_evaluate_object can optionally
12820 allocate memory for the return object.
12822 Implemented fix for keyboard hang when getting battery readings on
12823 some systems (Stephen White)
12825 PCI IRQ routing update (Dominik Brodowski)
12827 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
12830 ----------------------------------------
12831 11 June 2002. Summary of changes for this release.
12834 1) ACPI CA Core Subsystem Version 20020611:
12836 Fixed a reported problem where constants such as Zero and One
12837 appearing within _PRT packages were not handled correctly within
12838 the resource manager code. Originally reported against the ASL
12839 compiler because the code generator now optimizes integers to
12840 their minimal AML representation (i.e. AML constants if possible.)
12841 The _PRT code now handles all AML constant opcodes correctly
12842 (Zero, One, Ones, Revision).
12844 Fixed a problem with the Concatenate operator in the AML
12845 interpreter where a buffer result object was incorrectly marked as
12846 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
12848 All package sub-objects are now fully resolved before they are
12849 returned from the external ACPI interfaces. This means that name
12850 strings are resolved to object handles, and constant operators
12851 (Zero, One, Ones, Revision) are resolved to Integers.
12853 Implemented immediate resolution of the AML Constant opcodes
12854 (Zero, One, Ones, Revision) to Integer objects upon detection
12855 within the AML stream. This has simplified and reduced the
12856 generated code size of the subsystem by eliminating about 10
12857 switch statements for these constants (which previously were
12858 contained in Reference objects.) The complicating issues are that
12859 the Zero opcode is used as a "placeholder" for unspecified
12860 optional target operands and stores to constants are defined to be
12863 Code and Data Size: Current core subsystem library sizes are shown
12864 below. These are the code and data sizes for the acpica.lib
12865 produced by the Microsoft Visual C++ 6.0 compiler, and these
12866 values do not include any ACPI driver or OSPM code. The debug
12867 version of the code includes the debug output trace mechanism and
12868 has a larger code and data size. Note that these values will vary
12869 depending on the efficiency of the compiler and the compiler
12870 options used during generation.
12873 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12874 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12876 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12877 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12883 Added preliminary support for obtaining _TRA data for PCI root
12884 bridges (Bjorn Helgaas).
12887 3) iASL Compiler Version X2046:
12889 Fixed a problem where the "_DDN" reserved name was defined to be a
12890 control method with one argument. There are no arguments, and
12891 _DDN does not have to be a control method.
12893 Fixed a problem with the Linux version of the compiler where the
12894 source lines printed with error messages were the wrong lines.
12895 This turned out to be the "LF versus CR/LF" difference between
12896 Windows and Unix. This appears to be the longstanding issue
12897 concerning listing output and error messages.
12899 Fixed a problem with the Linux version of compiler where opcode
12900 names within error messages were wrong. This was caused by a
12901 slight difference in the output of the Flex tool on Linux versus
12904 Fixed a problem with the Linux compiler where the hex output files
12905 contained some garbage data caused by an internal buffer overrun.
12908 ----------------------------------------
12909 17 May 2002. Summary of changes for this release.
12912 1) ACPI CA Core Subsystem Version 20020517:
12914 Implemented a workaround to an BIOS bug discovered on the HP
12915 OmniBook where the FADT revision number and the table size are
12916 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
12917 behavior is to fallback to using only the ACPI 1.0 fields of the
12918 FADT if the table is too small to be a ACPI 2.0 table as claimed
12919 by the revision number. Although this is a BIOS bug, this is a
12920 case where the workaround is simple enough and with no side
12921 effects, so it seemed prudent to add it. A warning message is
12924 Implemented minimum size checks for the fixed-length ACPI tables -
12925 - the FADT and FACS, as well as consistency checks between the
12926 revision number and the table size.
12928 Fixed a reported problem in the table override support where the
12929 new table pointer was incorrectly treated as a physical address
12930 instead of a logical address.
12932 Eliminated the use of the AE_AML_ERROR exception and replaced it
12933 with more descriptive codes.
12935 Fixed a problem where an exception would occur if an ASL Field was
12936 defined with no named Field Units underneath it (used by some
12939 Code and Data Size: Current core subsystem library sizes are shown
12940 below. These are the code and data sizes for the acpica.lib
12941 produced by the Microsoft Visual C++ 6.0 compiler, and these
12942 values do not include any ACPI driver or OSPM code. The debug
12943 version of the code includes the debug output trace mechanism and
12944 has a larger code and data size. Note that these values will vary
12945 depending on the efficiency of the compiler and the compiler
12946 options used during generation.
12949 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12950 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12952 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12953 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12959 Much work done on ACPI init (MADT and PCI IRQ routing support).
12960 (Paul D. and Dominik Brodowski)
12962 Fix PCI IRQ-related panic on boot (Sam Revitch)
12964 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
12966 Fix "MHz" typo (Dominik Brodowski)
12968 Fix RTC year 2000 issue (Dominik Brodowski)
12970 Preclude multiple button proc entries (Eric Brunet)
12972 Moved arch-specific code out of include/platform/aclinux.h
12974 3) iASL Compiler Version X2044:
12976 Implemented error checking for the string used in the EISAID macro
12977 (Usually used in the definition of the _HID object.) The code now
12978 strictly enforces the PnP format - exactly 7 characters, 3
12979 uppercase letters and 4 hex digits.
12981 If a raw string is used in the definition of the _HID object
12982 (instead of the EISAID macro), the string must contain all
12983 alphanumeric characters (e.g., "*PNP0011" is not allowed because
12986 Implemented checking for invalid use of ACPI reserved names for
12987 most of the name creation operators (Name, Device, Event, Mutex,
12988 OperationRegion, PowerResource, Processor, and ThermalZone.)
12989 Previously, this check was only performed for control methods.
12991 Implemented an additional check on the Name operator to emit an
12992 error if a reserved name that must be implemented in ASL as a
12993 control method is used. We know that a reserved name must be a
12994 method if it is defined with input arguments.
12996 The warning emitted when a namespace object reference is not found
12997 during the cross reference phase has been changed into an error.
12998 The "External" directive should be used for names defined in other
13002 4) Tools and Utilities
13004 The 16-bit tools (adump16 and aexec16) have been regenerated and
13007 Fixed a problem with the output of both acpidump and adump16 where
13008 the indentation of closing parentheses and brackets was not
13010 aligned properly with the parent block.
13013 ----------------------------------------
13014 03 May 2002. Summary of changes for this release.
13017 1) ACPI CA Core Subsystem Version 20020503:
13019 Added support a new OSL interface that allows the host operating
13021 system software to override the DSDT found in the firmware -
13022 AcpiOsTableOverride. With this interface, the OSL can examine the
13023 version of the firmware DSDT and replace it with a different one
13026 Added new external interfaces for accessing ACPI registers from
13027 device drivers and other system software - AcpiGetRegister and
13028 AcpiSetRegister. This was simply an externalization of the
13029 existing AcpiHwBitRegister interfaces.
13031 Fixed a regression introduced in the previous build where the
13032 ASL/AML CreateField operator always returned an error,
13033 "destination must be a NS Node".
13035 Extended the maximum time (before failure) to successfully enable
13036 ACPI mode to 3 seconds.
13038 Code and Data Size: Current core subsystem library sizes are shown
13039 below. These are the code and data sizes for the acpica.lib
13040 produced by the Microsoft Visual C++ 6.0 compiler, and these
13041 values do not include any ACPI driver or OSPM code. The debug
13042 version of the code includes the debug output trace mechanism and
13043 has a larger code and data size. Note that these values will vary
13044 depending on the efficiency of the compiler and the compiler
13045 options used during generation.
13048 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13049 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13051 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13052 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13057 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
13058 free. While 3 out of 4 of our in-house systems work fine, the last
13059 one still hangs when testing the LAPIC timer.
13061 Renamed many files in 2.5 kernel release to omit "acpi_" from the
13064 Added warning on boot for Presario 711FR.
13066 Sleep improvements (Pavel Machek)
13068 ACPI can now be built without CONFIG_PCI enabled.
13070 IA64: Fixed memory map functions (JI Lee)
13073 3) iASL Compiler Version X2043:
13075 Added support to allow the compiler to be integrated into the MS
13076 VC++ development environment for one-button compilation of single
13077 files or entire projects -- with error-to-source-line mapping.
13079 Implemented support for compile-time constant folding for the
13080 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
13081 specification. This allows the ASL writer to use expressions
13082 instead of Integer/Buffer/String constants in terms that must
13083 evaluate to constants at compile time and will also simplify the
13084 emitted AML in any such sub-expressions that can be folded
13085 (evaluated at compile-time.) This increases the size of the
13086 compiler significantly because a portion of the ACPI CA AML
13087 interpreter is included within the compiler in order to pre-
13088 evaluate constant expressions.
13091 Fixed a problem with the "Unicode" ASL macro that caused the
13092 compiler to fault. (This macro is used in conjunction with the
13093 _STR reserved name.)
13095 Implemented an AML opcode optimization to use the Zero, One, and
13096 Ones opcodes where possible to further reduce the size of integer
13097 constants and thus reduce the overall size of the generated AML
13100 Implemented error checking for new reserved terms for ACPI version
13103 Implemented the -qr option to display the current list of ACPI
13104 reserved names known to the compiler.
13106 Implemented the -qc option to display the current list of ASL
13107 operators that are allowed within constant expressions and can
13108 therefore be folded at compile time if the operands are constants.
13113 Updated the Programmer's Reference for new interfaces, data types,
13114 and memory allocation model options.
13116 Updated the iASL Compiler User Reference to apply new format and
13117 add information about new features and options.
13119 ----------------------------------------
13120 19 April 2002. Summary of changes for this release.
13122 1) ACPI CA Core Subsystem Version 20020419:
13124 The source code base for the Core Subsystem has been completely
13125 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
13126 versions. The Lint option files used are included in the
13127 /acpi/generate/lint directory.
13129 Implemented enhanced status/error checking across the entire
13130 Hardware manager subsystem. Any hardware errors (reported from
13131 the OSL) are now bubbled up and will abort a running control
13135 Fixed a problem where the per-ACPI-table integer width (32 or 64)
13136 was stored only with control method nodes, causing a fault when
13137 non-control method code was executed during table loading. The
13138 solution implemented uses a global variable to indicate table
13139 width across the entire ACPI subsystem. Therefore, ACPI CA does
13140 not support mixed integer widths across different ACPI tables
13143 Fixed a problem where NULL extended fields (X fields) in an ACPI
13144 2.0 ACPI FADT caused the table load to fail. Although the
13145 existing ACPI specification is a bit fuzzy on this topic, the new
13146 behavior is to fall back on a ACPI 1.0 field if the corresponding
13147 ACPI 2.0 X field is zero (even though the table revision indicates
13148 a full ACPI 2.0 table.) The ACPI specification will be updated to
13149 clarify this issue.
13151 Fixed a problem with the SystemMemory operation region handler
13152 where memory was always accessed byte-wise even if the AML-
13153 specified access width was larger than a byte. This caused
13154 problems on systems with memory-mapped I/O. Memory is now
13155 accessed with the width specified. On systems that do not support
13156 non-aligned transfers, a check is made to guarantee proper address
13157 alignment before proceeding in order to avoid an AML-caused
13158 alignment fault within the kernel.
13161 Fixed a problem with the ExtendedIrq resource where only one byte
13162 of the 4-byte Irq field was extracted.
13164 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
13165 function was out of date and required a rewrite.
13167 Code and Data Size: Current core subsystem library sizes are shown
13168 below. These are the code and data sizes for the acpica.lib
13169 produced by the Microsoft Visual C++ 6.0 compiler, and these
13170 values do not include any ACPI driver or OSPM code. The debug
13171 version of the code includes the debug output trace mechanism and
13172 has a larger code and data size. Note that these values will vary
13173 depending on the efficiency of the compiler and the compiler
13174 options used during generation.
13177 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13178 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13180 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13181 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13186 PCI IRQ routing fixes (Dominik Brodowski)
13189 3) iASL Compiler Version X2042:
13191 Implemented an additional compile-time error check for a field
13192 unit whose size + minimum access width would cause a run-time
13193 access beyond the end-of-region. Previously, only the field size
13194 itself was checked.
13196 The Core subsystem and iASL compiler now share a common parse
13197 object in preparation for compile-time evaluation of the type
13198 3/4/5 ASL operators.
13201 ----------------------------------------
13202 Summary of changes for this release: 03_29_02
13204 1) ACPI CA Core Subsystem Version 20020329:
13206 Implemented support for late evaluation of TermArg operands to
13207 Buffer and Package objects. This allows complex expressions to be
13208 used in the declarations of these object types.
13210 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
13211 1.0, if the field was larger than 32 bits, it was returned as a
13212 buffer - otherwise it was returned as an integer. In ACPI 2.0,
13213 the field is returned as a buffer only if the field is larger than
13214 64 bits. The TableRevision is now considered when making this
13215 conversion to avoid incompatibility with existing ASL code.
13217 Implemented logical addressing for AcpiOsGetRootPointer. This
13218 allows an RSDP with either a logical or physical address. With
13219 this support, the host OS can now override all ACPI tables with
13220 one logical RSDP. Includes implementation of "typed" pointer
13221 support to allow a common data type for both physical and logical
13222 pointers internally. This required a change to the
13223 AcpiOsGetRootPointer interface.
13225 Implemented the use of ACPI 2.0 Generic Address Structures for all
13226 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
13227 mapped I/O for these ACPI features.
13229 Initialization now ignores not only non-required tables (All
13230 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
13231 not validate the table headers of unrecognized tables.
13233 Fixed a problem where a notify handler could only be
13234 installed/removed on an object of type Device. All "notify"
13236 objects are now supported -- Devices, Processor, Power, and
13239 Removed most verbosity from the ACPI_DB_INFO debug level. Only
13240 critical information is returned when this debug level is enabled.
13242 Code and Data Size: Current core subsystem library sizes are shown
13243 below. These are the code and data sizes for the acpica.lib
13244 produced by the Microsoft Visual C++ 6.0 compiler, and these
13245 values do not include any ACPI driver or OSPM code. The debug
13246 version of the code includes the debug output trace mechanism and
13247 has a larger code and data size. Note that these values will vary
13248 depending on the efficiency of the compiler and the compiler
13249 options used during generation.
13252 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13253 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13255 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13256 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13261 The processor driver (acpi_processor.c) now fully supports ACPI
13262 2.0-based processor performance control (e.g. Intel(R)
13263 SpeedStep(TM) technology) Note that older laptops that only have
13264 the Intel "applet" interface are not supported through this. The
13265 'limit' and 'performance' interface (/proc) are fully functional.
13266 [Note that basic policy for controlling performance state
13267 transitions will be included in the next version of ospmd.] The
13268 idle handler was modified to more aggressively use C2, and PIIX4
13269 errata handling underwent a complete overhaul (big thanks to
13270 Dominik Brodowski).
13272 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13273 based devices in the ACPI namespace are now dynamically bound
13274 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13275 This allows, among other things, ACPI to resolve bus numbers for
13276 subordinate PCI bridges.
13278 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13279 entries defined underneath PCI bridges.
13281 Added IBM 600E to bad bios list due to invalid _ADR value for
13282 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13284 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13285 (acpi.c, mpparse.c) -- stay tuned.
13287 Added back visual differentiation between fixed-feature and
13288 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13289 button/power/PWRF) to simplify button identification.
13291 We no longer use -Wno-unused when compiling debug. Please ignore
13292 any "_THIS_MODULE defined but not used" messages.
13294 Can now shut down the system using "magic sysrq" key.
13297 3) iASL Compiler version 2041:
13299 Fixed a problem where conversion errors for hex/octal/decimal
13300 constants were not reported.
13302 Implemented a fix for the General Register template Address field.
13303 This field was 8 bits when it should be 64.
13305 Fixed a problem where errors/warnings were no longer being emitted
13306 within the listing output file.
13308 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13309 exactly 4 characters, alphanumeric only.
13314 ----------------------------------------
13315 Summary of changes for this release: 03_08_02
13318 1) ACPI CA Core Subsystem Version 20020308:
13320 Fixed a problem with AML Fields where the use of the "AccessAny"
13321 keyword could cause an interpreter error due to attempting to read
13322 or write beyond the end of the parent Operation Region.
13324 Fixed a problem in the SystemMemory Operation Region handler where
13325 an attempt was made to map memory beyond the end of the region.
13326 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13327 errors on some Linux systems.
13329 Fixed a problem where the interpreter/namespace "search to root"
13330 algorithm was not functioning for some object types. Relaxed the
13331 internal restriction on the search to allow upsearches for all
13332 external object types as well as most internal types.
13337 We now use safe_halt() macro versus individual calls to sti | hlt.
13339 Writing to the processor limit interface should now work. "echo 1"
13340 will increase the limit, 2 will decrease, and 0 will reset to the
13347 Fixed segfault on Linux version.
13350 ----------------------------------------
13351 Summary of changes for this release: 02_25_02
13353 1) ACPI CA Core Subsystem:
13356 Fixed a problem where the GPE bit masks were not initialized
13357 properly, causing erratic GPE behavior.
13359 Implemented limited support for multiple calling conventions. The
13360 code can be generated with either the VPL (variable parameter
13361 list, or "C") convention, or the FPL (fixed parameter list, or
13362 "Pascal") convention. The core subsystem is about 3.4% smaller
13363 when generated with FPL.
13368 Re-add some /proc/acpi/event functionality that was lost during
13371 Resolved issue with /proc events for fixed-feature buttons showing
13372 up as the system device.
13374 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13376 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13378 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13380 Fixed limit interface & usage to fix bugs with passive cooling
13383 Restructured PRT support.
13386 ----------------------------------------
13387 Summary of changes for this label: 02_14_02
13390 1) ACPI CA Core Subsystem:
13392 Implemented support in AcpiLoadTable to allow loading of FACS and
13395 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13396 been removed. All 64-bit platforms should be migrated to the ACPI
13397 2.0 tables. The actbl71.h header has been removed from the source
13400 All C macros defined within the subsystem have been prefixed with
13401 "ACPI_" to avoid collision with other system include files.
13403 Removed the return value for the two AcpiOsPrint interfaces, since
13404 it is never used and causes lint warnings for ignoring the return
13407 Added error checking to all internal mutex acquire and release
13408 calls. Although a failure from one of these interfaces is
13409 probably a fatal system error, these checks will cause the
13410 immediate abort of the currently executing method or interface.
13412 Fixed a problem where the AcpiSetCurrentResources interface could
13413 fault. This was a side effect of the deployment of the new memory
13416 Fixed a couple of problems with the Global Lock support introduced
13417 in the last major build. The "common" (1.0/2.0) internal FACS was
13418 being overwritten with the FACS signature and clobbering the
13419 Global Lock pointer. Also, the actual firmware FACS was being
13420 unmapped after construction of the "common" FACS, preventing
13421 access to the actual Global Lock field within it. The "common"
13422 internal FACS is no longer installed as an actual ACPI table; it
13423 is used simply as a global.
13425 Code and Data Size: Current core subsystem library sizes are shown
13426 below. These are the code and data sizes for the acpica.lib
13427 produced by the Microsoft Visual C++ 6.0 compiler, and these
13428 values do not include any ACPI driver or OSPM code. The debug
13429 version of the code includes the debug output trace mechanism and
13430 has a larger code and data size. Note that these values will vary
13431 depending on the efficiency of the compiler and the compiler
13432 options used during generation.
13434 Previous Release (02_07_01)
13435 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13436 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13438 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13439 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13444 Updated Linux-specific code for core macro and OSL interface
13445 changes described above.
13447 Improved /proc/acpi/event. It now can be opened only once and has
13448 proper poll functionality.
13450 Fixed and restructured power management (acpi_bus).
13452 Only create /proc "view by type" when devices of that class exist.
13454 Fixed "charging/discharging" bug (and others) in acpi_battery.
13456 Improved thermal zone code.
13459 3) ASL Compiler, version X2039:
13462 Implemented the new compiler restriction on ASL String hex/octal
13463 escapes to non-null, ASCII values. An error results if an invalid
13464 value is used. (This will require an ACPI 2.0 specification
13467 AML object labels that are output to the optional C and ASM source
13468 are now prefixed with both the ACPI table signature and table ID
13469 to help guarantee uniqueness within a large BIOS project.
13472 ----------------------------------------
13473 Summary of changes for this label: 02_01_02
13475 1) ACPI CA Core Subsystem:
13477 ACPI 2.0 support is complete in the entire Core Subsystem and the
13478 ASL compiler. All new ACPI 2.0 operators are implemented and all
13479 other changes for ACPI 2.0 support are complete. With
13480 simultaneous code and data optimizations throughout the subsystem,
13481 ACPI 2.0 support has been implemented with almost no additional
13482 cost in terms of code and data size.
13484 Implemented a new mechanism for allocation of return buffers. If
13485 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13486 be allocated on behalf of the caller. Consolidated all return
13487 buffer validation and allocation to a common procedure. Return
13488 buffers will be allocated via the primary OSL allocation interface
13489 since it appears that a separate pool is not needed by most users.
13490 If a separate pool is required for these buffers, the caller can
13491 still use the original mechanism and pre-allocate the buffer(s).
13493 Implemented support for string operands within the DerefOf
13496 Restructured the Hardware and Event managers to be table driven,
13497 simplifying the source code and reducing the amount of generated
13500 Split the common read/write low-level ACPI register bitfield
13501 procedure into a separate read and write, simplifying the code
13504 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13505 used only a handful of times and didn't have enough critical mass
13506 for a separate interface. Replaced with a common calloc procedure
13509 Fixed a reported problem with the GPE number mapping mechanism
13510 that allows GPE1 numbers to be non-contiguous with GPE0.
13511 Reorganized the GPE information and shrunk a large array that was
13512 originally large enough to hold info for all possible GPEs (256)
13513 to simply large enough to hold all GPEs up to the largest GPE
13514 number on the machine.
13516 Fixed a reported problem with resource structure alignment on 64-
13519 Changed the AcpiEnableEvent and AcpiDisableEvent external
13520 interfaces to not require any flags for the common case of
13521 enabling/disabling a GPE.
13523 Implemented support to allow a "Notify" on a Processor object.
13525 Most TBDs in comments within the source code have been resolved
13529 Fixed a problem in the interpreter where a standalone parent
13530 prefix (^) was not handled correctly in the interpreter and
13533 Removed obsolete and unnecessary GPE save/restore code.
13535 Implemented Field support in the ASL Load operator. This allows a
13536 table to be loaded from a named field, in addition to loading a
13537 table directly from an Operation Region.
13539 Implemented timeout and handle support in the external Global Lock
13542 Fixed a problem in the AcpiDump utility where pathnames were no
13543 longer being generated correctly during the dump of named objects.
13545 Modified the AML debugger to give a full display of if/while
13546 predicates instead of just one AML opcode at a time. (The
13547 predicate can have several nested ASL statements.) The old method
13548 was confusing during single stepping.
13550 Code and Data Size: Current core subsystem library sizes are shown
13551 below. These are the code and data sizes for the acpica.lib
13552 produced by the Microsoft Visual C++ 6.0 compiler, and these
13553 values do not include any ACPI driver or OSPM code. The debug
13554 version of the code includes the debug output trace mechanism and
13555 has a larger code and data size. Note that these values will vary
13556 depending on the efficiency of the compiler and the compiler
13557 options used during generation.
13559 Previous Release (12_18_01)
13560 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13561 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13563 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13564 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13568 Implemented fix for PIIX reverse throttling errata (Processor
13571 Added new Limit interface (Processor and Thermal drivers)
13573 New thermal policy (Thermal driver)
13575 Many updates to /proc
13577 Battery "low" event support (Battery driver)
13579 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13581 IA32 - IA64 initialization unification, no longer experimental
13583 Menuconfig options redesigned
13585 3) ASL Compiler, version X2037:
13587 Implemented several new output features to simplify integration of
13588 AML code into firmware: 1) Output the AML in C source code with
13589 labels for each named ASL object. The original ASL source code
13590 is interleaved as C comments. 2) Output the AML in ASM source code
13591 with labels and interleaved ASL source. 3) Output the AML in
13592 raw hex table form, in either C or ASM.
13594 Implemented support for optional string parameters to the
13595 LoadTable operator.
13597 Completed support for embedded escape sequences within string
13598 literals. The compiler now supports all single character escapes
13599 as well as the Octal and Hex escapes. Note: the insertion of a
13600 null byte into a string literal (via the hex/octal escape) causes
13601 the string to be immediately terminated. A warning is issued.
13603 Fixed a problem where incorrect AML was generated for the case
13604 where an ASL namepath consists of a single parent prefix (
13606 ) with no trailing name segments.
13608 The compiler has been successfully generated with a 64-bit C
13614 ----------------------------------------
13615 Summary of changes for this label: 12_18_01
13619 Enhanced blacklist with reason and severity fields. Any table's
13620 signature may now be used to identify a blacklisted system.
13622 Call _PIC control method to inform the firmware which interrupt
13623 model the OS is using. Turn on any disabled link devices.
13625 Cleaned up busmgr /proc error handling (Andreas Dilger)
13627 2) ACPI CA Core Subsystem:
13629 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13632 Completed implementation of the ACPI 2.0 "Continue",
13633 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13634 operators. All new ACPI 2.0 operators are now implemented in both
13635 the ASL compiler and the AML interpreter. The only remaining ACPI
13636 2.0 task is support for the String data type in the DerefOf
13637 operator. Fixed a problem with AcquireMutex where the status code
13638 was lost if the caller had to actually wait for the mutex.
13640 Increased the maximum ASL Field size from 64K bits to 4G bits.
13642 Completed implementation of the external Global Lock interfaces --
13643 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13644 Handler parameters were added.
13646 Completed another pass at removing warnings and issues when
13647 compiling with 64-bit compilers. The code now compiles cleanly
13648 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13649 add and subtract (diff) macros have changed considerably.
13652 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13653 64-bit platforms, 32-bits on all others. This type is used
13654 wherever memory allocation and/or the C sizeof() operator is used,
13655 and affects the OSL memory allocation interfaces AcpiOsAllocate
13656 and AcpiOsCallocate.
13658 Implemented sticky user breakpoints in the AML debugger.
13660 Code and Data Size: Current core subsystem library sizes are shown
13661 below. These are the code and data sizes for the acpica.lib
13662 produced by the Microsoft Visual C++ 6.0 compiler, and these
13663 values do not include any ACPI driver or OSPM code. The debug
13664 version of the code includes the debug output trace mechanism and
13665 has a larger code and data size. Note that these values will vary
13666 depending on the efficiency of the compiler and the compiler
13667 options used during generation.
13669 Previous Release (12_05_01)
13670 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13671 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13673 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13674 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13676 3) ASL Compiler, version X2034:
13678 Now checks for (and generates an error if detected) the use of a
13679 Break or Continue statement without an enclosing While statement.
13682 Successfully generated the compiler with the Intel 64-bit C
13685 ----------------------------------------
13686 Summary of changes for this label: 12_05_01
13688 1) ACPI CA Core Subsystem:
13690 The ACPI 2.0 CopyObject operator is fully implemented. This
13691 operator creates a new copy of an object (and is also used to
13692 bypass the "implicit conversion" mechanism of the Store operator.)
13694 The ACPI 2.0 semantics for the SizeOf operator are fully
13695 implemented. The change is that performing a SizeOf on a
13696 reference object causes an automatic dereference of the object to
13697 tha actual value before the size is evaluated. This behavior was
13698 undefined in ACPI 1.0.
13700 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13701 have been implemented. The interrupt polarity and mode are now
13704 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13705 appearing in Package objects were not properly converted to
13706 integers when the internal Package was converted to an external
13707 object (via the AcpiEvaluateObject interface.)
13709 Fixed a problem with the namespace object deletion mechanism for
13710 objects created by control methods. There were two parts to this
13711 problem: 1) Objects created during the initialization phase method
13712 parse were not being deleted, and 2) The object owner ID mechanism
13713 to track objects was broken.
13715 Fixed a problem where the use of the ASL Scope operator within a
13716 control method would result in an invalid opcode exception.
13718 Fixed a problem introduced in the previous label where the buffer
13719 length required for the _PRT structure was not being returned
13722 Code and Data Size: Current core subsystem library sizes are shown
13723 below. These are the code and data sizes for the acpica.lib
13724 produced by the Microsoft Visual C++ 6.0 compiler, and these
13725 values do not include any ACPI driver or OSPM code. The debug
13726 version of the code includes the debug output trace mechanism and
13727 has a larger code and data size. Note that these values will vary
13728 depending on the efficiency of the compiler and the compiler
13729 options used during generation.
13731 Previous Release (11_20_01)
13732 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13733 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13736 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13737 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13741 Updated all files to apply cleanly against 2.4.16.
13743 Added basic PCI Interrupt Routing Table (PRT) support for IA32
13744 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
13745 version supports both static and dyanmic PRT entries, but dynamic
13746 entries are treated as if they were static (not yet
13747 reconfigurable). Architecture- specific code to use this data is
13748 absent on IA32 but should be available shortly.
13750 Changed the initialization sequence to start the ACPI interpreter
13751 (acpi_init) prior to initialization of the PCI driver (pci_init)
13752 in init/main.c. This ordering is required to support PRT and
13753 facilitate other (future) enhancement. A side effect is that the
13754 ACPI bus driver and certain device drivers can no longer be loaded
13757 Modified the 'make menuconfig' options to allow PCI Interrupt
13758 Routing support to be included without the ACPI Bus and other
13761 3) ASL Compiler, version X2033:
13763 Fixed some issues with the use of the new CopyObject and
13764 DataTableRegion operators. Both are fully functional.
13766 ----------------------------------------
13767 Summary of changes for this label: 11_20_01
13769 20 November 2001. Summary of changes for this release.
13771 1) ACPI CA Core Subsystem:
13773 Updated Index support to match ACPI 2.0 semantics. Storing a
13774 Integer, String, or Buffer to an Index of a Buffer will store only
13775 the least-significant byte of the source to the Indexed buffer
13776 byte. Multiple writes are not performed.
13778 Fixed a problem where the access type used in an AccessAs ASL
13779 operator was not recorded correctly into the field object.
13781 Fixed a problem where ASL Event objects were created in a
13782 signalled state. Events are now created in an unsignalled state.
13784 The internal object cache is now purged after table loading and
13785 initialization to reduce the use of dynamic kernel memory -- on
13786 the assumption that object use is greatest during the parse phase
13787 of the entire table (versus the run-time use of individual control
13790 ACPI 2.0 variable-length packages are now fully operational.
13792 Code and Data Size: Code and Data optimizations have permitted new
13793 feature development with an actual reduction in the library size.
13794 Current core subsystem library sizes are shown below. These are
13795 the code and data sizes for the acpica.lib produced by the
13796 Microsoft Visual C++ 6.0 compiler, and these values do not include
13797 any ACPI driver or OSPM code. The debug version of the code
13798 includes the debug output trace mechanism and has a larger code
13799 and data size. Note that these values will vary depending on the
13800 efficiency of the compiler and the compiler options used during
13803 Previous Release (11_09_01):
13804 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13805 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13808 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13809 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13813 Enhanced the ACPI boot-time initialization code to allow the use
13814 of Local APIC tables for processor enumeration on IA-32, and to
13815 pave the way for a fully MPS-free boot (on SMP systems) in the
13816 near future. This functionality replaces
13817 arch/i386/kernel/acpitables.c, which was introduced in an earlier
13818 2.4.15-preX release. To enable this feature you must add
13819 "acpi_boot=on" to the kernel command line -- see the help entry
13820 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
13823 Restructured the configuration options to allow boot-time table
13824 parsing support without inclusion of the ACPI Interpreter (and
13827 NOTE: This release does not include fixes for the reported events,
13828 power-down, and thermal passive cooling issues (coming soon).
13832 Added additional typechecking for Fields within restricted access
13833 Operation Regions. All fields within EC and CMOS regions must be
13834 declared with ByteAcc. All fields withing SMBus regions must be
13835 declared with the BufferAcc access type.
13837 Fixed a problem where the listing file output of control methods
13838 no longer interleaved the actual AML code with the ASL source
13844 ----------------------------------------
13845 Summary of changes for this label: 11_09_01
13847 1) ACPI CA Core Subsystem:
13849 Implemented ACPI 2.0-defined support for writes to fields with a
13850 Buffer, String, or Integer source operand that is smaller than the
13851 target field. In these cases, the source operand is zero-extended
13852 to fill the target field.
13854 Fixed a problem where a Field starting bit offset (within the
13855 parent operation region) was calculated incorrectly if the
13857 alignment of the field differed from the access width. This
13858 affected CreateWordField, CreateDwordField, CreateQwordField, and
13859 possibly other fields that use the "AccessAny" keyword.
13861 Fixed a problem introduced in the 11_02_01 release where indirect
13862 stores through method arguments did not operate correctly.
13866 Implemented boot-time ACPI table parsing support
13867 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
13868 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
13869 legacy BIOS interfaces (e.g. MPS) for the configuration of system
13870 processors, memory, and interrupts during setup_arch(). Note that
13871 this patch does not include the required architecture-specific
13872 changes required to apply this information -- subsequent patches
13873 will be posted for both IA32 and IA64 to achieve this.
13875 Added low-level sleep support for IA32 platforms, courtesy of Pat
13876 Mochel. This allows IA32 systems to transition to/from various
13877 sleeping states (e.g. S1, S3), although the lack of a centralized
13878 driver model and power-manageable drivers will prevent its
13879 (successful) use on most systems.
13881 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
13882 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
13883 tables" option, etc.
13885 Increased the default timeout for the EC driver from 1ms to 10ms
13886 (1000 cycles of 10us) to try to address AE_TIME errors during EC
13889 ----------------------------------------
13890 Summary of changes for this label: 11_02_01
13892 1) ACPI CA Core Subsystem:
13894 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
13895 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
13898 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
13899 changes to support ACPI 2.0 Qword field access. Read/Write
13900 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
13901 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
13902 the value parameter for the address space handler interface is now
13903 an ACPI_INTEGER. OSL implementations of these interfaces must now
13904 handle the case where the Width parameter is 64.
13906 Index Fields: Fixed a problem where unaligned bit assembly and
13907 disassembly for IndexFields was not supported correctly.
13909 Index and Bank Fields: Nested Index and Bank Fields are now
13910 supported. During field access, a check is performed to ensure
13911 that the value written to an Index or Bank register is not out of
13912 the range of the register. The Index (or Bank) register is
13913 written before each access to the field data. Future support will
13914 include allowing individual IndexFields to be wider than the
13915 DataRegister width.
13917 Fields: Fixed a problem where the AML interpreter was incorrectly
13918 attempting to write beyond the end of a Field/OpRegion. This was
13919 a boundary case that occurred when a DWORD field was written to a
13920 BYTE access OpRegion, forcing multiple writes and causing the
13921 interpreter to write one datum too many.
13923 Fields: Fixed a problem with Field/OpRegion access where the
13924 starting bit address of a field was incorrectly calculated if the
13925 current access type was wider than a byte (WordAcc, DwordAcc, or
13928 Fields: Fixed a problem where forward references to individual
13929 FieldUnits (individual Field names within a Field definition) were
13930 not resolved during the AML table load.
13932 Fields: Fixed a problem where forward references from a Field
13933 definition to the parent Operation Region definition were not
13934 resolved during the AML table load.
13936 Fields: Duplicate FieldUnit names within a scope are now detected
13937 during AML table load.
13939 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
13940 returned an incorrect name for the root node.
13942 Code and Data Size: Code and Data optimizations have permitted new
13943 feature development with an actual reduction in the library size.
13944 Current core subsystem library sizes are shown below. These are
13945 the code and data sizes for the acpica.lib produced by the
13946 Microsoft Visual C++ 6.0 compiler, and these values do not include
13947 any ACPI driver or OSPM code. The debug version of the code
13948 includes the debug output trace mechanism and has a larger code
13949 and data size. Note that these values will vary depending on the
13950 efficiency of the compiler and the compiler options used during
13953 Previous Release (10_18_01):
13954 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13955 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13958 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13959 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13963 Improved /proc processor output (Pavel Machek) Re-added
13964 MODULE_LICENSE("GPL") to all modules.
13966 3) ASL Compiler version X2030:
13968 Duplicate FieldUnit names within a scope are now detected and
13973 Programmer Reference updated to reflect OSL and address space
13974 handler interface changes described above.
13976 ----------------------------------------
13977 Summary of changes for this label: 10_18_01
13979 ACPI CA Core Subsystem:
13981 Fixed a problem with the internal object reference count mechanism
13982 that occasionally caused premature object deletion. This resolves
13983 all of the outstanding problem reports where an object is deleted
13984 in the middle of an interpreter evaluation. Although this problem
13985 only showed up in rather obscure cases, the solution to the
13986 problem involved an adjustment of all reference counts involving
13987 objects attached to namespace nodes.
13989 Fixed a problem with Field support in the interpreter where
13990 writing to an aligned field whose length is an exact multiple (2
13991 or greater) of the field access granularity would cause an attempt
13992 to write beyond the end of the field.
13994 The top level AML opcode execution functions within the
13995 interpreter have been renamed with a more meaningful and
13996 consistent naming convention. The modules exmonad.c and
13997 exdyadic.c were eliminated. New modules are exoparg1.c,
13998 exoparg2.c, exoparg3.c, and exoparg6.c.
14000 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
14002 Fixed a problem where the AML debugger was causing some internal
14003 objects to not be deleted during subsystem termination.
14005 Fixed a problem with the external AcpiEvaluateObject interface
14006 where the subsystem would fault if the named object to be
14007 evaluated refered to a constant such as Zero, Ones, etc.
14009 Fixed a problem with IndexFields and BankFields where the
14010 subsystem would fault if the index, data, or bank registers were
14011 not defined in the same scope as the field itself.
14013 Added printf format string checking for compilers that support
14014 this feature. Corrected more than 50 instances of issues with
14015 format specifiers within invocations of ACPI_DEBUG_PRINT
14016 throughout the core subsystem code.
14018 The ASL "Revision" operator now returns the ACPI support level
14019 implemented in the core - the value "2" since the ACPI 2.0 support
14020 is more than 50% implemented.
14022 Enhanced the output of the AML debugger "dump namespace" command
14023 to output in a more human-readable form.
14025 Current core subsystem library code sizes are shown below. These
14027 are the code and data sizes for the acpica.lib produced by the
14028 Microsoft Visual C++ 6.0 compiler, and these values do not include
14029 any ACPI driver or OSPM code. The debug version of the code
14030 includes the full debug trace mechanism -- leading to a much
14032 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 Label (09_20_01):
14037 Non-Debug Version: 65K Code, 5K Data, 70K Total
14038 Debug Version: 138K Code, 58K Data, 196K Total
14042 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14043 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14047 Implemented a "Bad BIOS Blacklist" to track machines that have
14048 known ASL/AML problems.
14050 Enhanced the /proc interface for the thermal zone driver and added
14051 support for _HOT (the critical suspend trip point). The 'info'
14052 file now includes threshold/policy information, and allows setting
14053 of _SCP (cooling preference) and _TZP (polling frequency) values
14054 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
14055 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
14056 preference to the passive/quiet mode (if supported by the ASL).
14058 Implemented a workaround for a gcc bug that resuted in an OOPs
14059 when loading the control method battery driver.
14061 ----------------------------------------
14062 Summary of changes for this label: 09_20_01
14064 ACPI CA Core Subsystem:
14066 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
14067 modified to allow individual GPE levels to be flagged as wake-
14068 enabled (i.e., these GPEs are to remain enabled when the platform
14071 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
14072 support wake-enabled GPEs. This means that upon entering the
14073 sleep state, all GPEs that are not wake-enabled are disabled.
14074 When leaving the sleep state, these GPEs are reenabled.
14076 A local double-precision divide/modulo module has been added to
14077 enhance portability to OS kernels where a 64-bit math library is
14078 not available. The new module is "utmath.c".
14080 Several optimizations have been made to reduce the use of CPU
14081 stack. Originally over 2K, the maximum stack usage is now below
14082 2K at 1860 bytes (1.82k)
14084 Fixed a problem with the AcpiGetFirmwareTable interface where the
14085 root table pointer was not mapped into a logical address properly.
14087 Fixed a problem where a NULL pointer was being dereferenced in the
14088 interpreter code for the ASL Notify operator.
14090 Fixed a problem where the use of the ASL Revision operator
14091 returned an error. This operator now returns the current version
14092 of the ACPI CA core subsystem.
14094 Fixed a problem where objects passed as control method parameters
14095 to AcpiEvaluateObject were always deleted at method termination.
14096 However, these objects may end up being stored into the namespace
14097 by the called method. The object reference count mechanism was
14098 applied to these objects instead of a force delete.
14100 Fixed a problem where static strings or buffers (contained in the
14101 AML code) that are declared as package elements within the ASL
14102 code could cause a fault because the interpreter would attempt to
14103 delete them. These objects are now marked with the "static
14104 object" flag to prevent any attempt to delete them.
14106 Implemented an interpreter optimization to use operands directly
14107 from the state object instead of extracting the operands to local
14108 variables. This reduces stack use and code size, and improves
14111 The module exxface.c was eliminated as it was an unnecessary extra
14114 Current core subsystem library code sizes are shown below. These
14115 are the code and data sizes for the acpica.lib produced by the
14116 Microsoft Visual C++ 6.0 compiler, and these values do not include
14117 any ACPI driver or OSPM code. The debug version of the code
14118 includes the full debug trace mechanism -- leading to a much
14119 larger code and data size. Note that these values will vary
14120 depending on the efficiency of the compiler and the compiler
14121 options used during generation.
14123 Non-Debug Version: 65K Code, 5K Data, 70K Total
14124 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
14125 Total (Previously 195K)
14129 Support for ACPI 2.0 64-bit integers has been added. All ACPI
14130 Integer objects are now 64 bits wide
14132 All Acpi data types and structures are now in lower case. Only
14133 Acpi macros are upper case for differentiation.
14137 Changes to the external interfaces as described above.
14139 ----------------------------------------
14140 Summary of changes for this label: 08_31_01
14142 ACPI CA Core Subsystem:
14144 A bug with interpreter implementation of the ASL Divide operator
14145 was found and fixed. The implicit function return value (not the
14146 explicit store operands) was returning the remainder instead of
14147 the quotient. This was a longstanding bug and it fixes several
14148 known outstanding issues on various platforms.
14150 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
14151 been further optimized for size. There are 700 invocations of the
14152 DEBUG_PRINT macro alone, so each optimization reduces the size of
14153 the debug version of the subsystem significantly.
14155 A stack trace mechanism has been implemented. The maximum stack
14156 usage is about 2K on 32-bit platforms. The debugger command "stat
14157 stack" will display the current maximum stack usage.
14159 All public symbols and global variables within the subsystem are
14160 now prefixed with the string "Acpi". This keeps all of the
14161 symbols grouped together in a kernel map, and avoids conflicts
14162 with other kernel subsystems.
14164 Most of the internal fixed lookup tables have been moved into the
14165 code segment via the const operator.
14167 Several enhancements have been made to the interpreter to both
14168 reduce the code size and improve performance.
14170 Current core subsystem library code sizes are shown below. These
14171 are the code and data sizes for the acpica.lib produced by the
14172 Microsoft Visual C++ 6.0 compiler, and these values do not include
14173 any ACPI driver or OSPM code. The debug version of the code
14174 includes the full debug trace mechanism which contains over 700
14175 invocations of the DEBUG_PRINT macro, 500 function entry macro
14176 invocations, and over 900 function exit macro invocations --
14177 leading to a much larger code and data size. Note that these
14178 values will vary depending on the efficiency of the compiler and
14179 the compiler options used during generation.
14181 Non-Debug Version: 64K Code, 5K Data, 69K Total
14182 Debug Version: 137K Code, 58K Data, 195K Total
14186 Implemented wbinvd() macro, pending a kernel-wide definition.
14188 Fixed /proc/acpi/event to handle poll() and short reads.
14190 ASL Compiler, version X2026:
14192 Fixed a problem introduced in the previous label where the AML
14194 code emitted for package objects produced packages with zero
14197 ----------------------------------------
14198 Summary of changes for this label: 08_16_01
14200 ACPI CA Core Subsystem:
14202 The following ACPI 2.0 ASL operators have been implemented in the
14203 AML interpreter (These are already supported by the Intel ASL
14204 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
14205 ToBuffer. Support for 64-bit AML constants is implemented in the
14206 AML parser, debugger, and disassembler.
14208 The internal memory tracking mechanism (leak detection code) has
14209 been upgraded to reduce the memory overhead (a separate tracking
14210 block is no longer allocated for each memory allocation), and now
14211 supports all of the internal object caches.
14213 The data structures and code for the internal object caches have
14214 been coelesced and optimized so that there is a single cache and
14215 memory list data structure and a single group of functions that
14216 implement generic cache management. This has reduced the code
14217 size in both the debug and release versions of the subsystem.
14219 The DEBUG_PRINT macro(s) have been optimized for size and replaced
14220 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
14221 different, because it generates a single call to an internal
14222 function. This results in a savings of about 90 bytes per
14223 invocation, resulting in an overall code and data savings of about
14224 16% in the debug version of the subsystem.
14228 Fixed C3 disk corruption problems and re-enabled C3 on supporting
14231 Integrated low-level sleep code by Patrick Mochel.
14233 Further tweaked source code Linuxization.
14239 Support for ACPI 2.0 variable length packages is fixed/completed.
14241 Fixed a problem where the optional length parameter for the ACPI
14242 2.0 ToString operator.
14244 Fixed multiple extraneous error messages when a syntax error is
14245 detected within the declaration line of a control method.
14247 ----------------------------------------
14248 Summary of changes for this label: 07_17_01
14250 ACPI CA Core Subsystem:
14252 Added a new interface named AcpiGetFirmwareTable to obtain any
14253 ACPI table via the ACPI signature. The interface can be called at
14254 any time during kernel initialization, even before the kernel
14255 virtual memory manager is initialized and paging is enabled. This
14256 allows kernel subsystems to obtain ACPI tables very early, even
14257 before the ACPI CA subsystem is initialized.
14259 Fixed a problem where Fields defined with the AnyAcc attribute
14260 could be resolved to the incorrect address under the following
14261 conditions: 1) the field width is larger than 8 bits and 2) the
14262 parent operation region is not defined on a DWORD boundary.
14264 Fixed a problem where the interpreter is not being locked during
14265 namespace initialization (during execution of the _INI control
14266 methods), causing an error when an attempt is made to release it
14269 ACPI 2.0 support in the AML Interpreter has begun and will be
14270 ongoing throughout the rest of this year. In this label, The Mod
14271 operator is implemented.
14273 Added a new data type to contain full PCI addresses named
14274 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14275 and Function values.
14279 Enhanced the Linux version of the source code to change most
14280 capitalized ACPI type names to lowercase. For example, all
14281 instances of ACPI_STATUS are changed to acpi_status. This will
14282 result in a large diff, but the change is strictly cosmetic and
14283 aligns the CA code closer to the Linux coding standard.
14287 The interfaces to the PCI configuration space have been changed to
14288 add the PCI Segment number and to split the single 32-bit combined
14289 DeviceFunction field into two 16-bit fields. This was
14290 accomplished by moving the four values that define an address in
14291 PCI configuration space (segment, bus, device, and function) to
14292 the new ACPI_PCI_ID structure.
14294 The changes to the PCI configuration space interfaces led to a
14295 reexamination of the complete set of address space access
14296 interfaces for PCI, I/O, and Memory. The previously existing 18
14297 interfaces have proven difficult to maintain (any small change
14298 must be propagated across at least 6 interfaces) and do not easily
14299 allow for future expansion to 64 bits if necessary. Also, on some
14300 systems, it would not be appropriate to demultiplex the access
14301 width (8, 16, 32,or 64) before calling the OSL if the
14302 corresponding native OS interfaces contain a similar access width
14303 parameter. For these reasons, the 18 address space interfaces
14304 have been replaced by these 6 new ones:
14306 AcpiOsReadPciConfiguration
14307 AcpiOsWritePciConfiguration
14313 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14314 to perform the platform and/or OS-specific actions necessary to
14315 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14316 interface will simply call down to the CA core to perform the low-
14317 memory search for the table. On IA-64, the RSDP is obtained from
14318 EFI. Migrating this interface to the OSL allows the CA core to
14320 remain OS and platform independent.
14322 Added a new interface named AcpiOsSignal to provide a generic
14323 "function code and pointer" interface for various miscellaneous
14324 signals and notifications that must be made to the host OS. The
14325 first such signals are intended to support the ASL Fatal and
14326 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14327 interface has been obsoleted.
14329 The definition of the AcpiFormatException interface has been
14330 changed to simplify its use. The caller no longer must supply a
14331 buffer to the call; A pointer to a const string is now returned
14332 directly. This allows the call to be easily used in printf
14333 statements, etc. since the caller does not have to manage a local
14337 ASL Compiler, Version X2025:
14339 The ACPI 2.0 Switch/Case/Default operators have been implemented
14340 and are fully functional. They will work with all ACPI 1.0
14341 interpreters, since the operators are simply translated to If/Else
14344 The ACPI 2.0 ElseIf operator is implemented and will also work
14345 with 1.0 interpreters, for the same reason.
14347 Implemented support for ACPI 2.0 variable-length packages. These
14348 packages have a separate opcode, and their size is determined by
14349 the interpreter at run-time.
14351 Documentation The ACPI CA Programmer Reference has been updated to
14352 reflect the new interfaces and changes to existing interfaces.
14354 ------------------------------------------
14355 Summary of changes for this label: 06_15_01
14357 ACPI CA Core Subsystem:
14359 Fixed a problem where a DWORD-accessed field within a Buffer
14360 object would get its byte address inadvertently rounded down to
14361 the nearest DWORD. Buffers are always Byte-accessible.
14363 ASL Compiler, version X2024:
14365 Fixed a problem where the Switch() operator would either fault or
14366 hang the compiler. Note however, that the AML code for this ACPI
14367 2.0 operator is not yet implemented.
14369 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14372 Implementation of the CreateField operator automatically converts
14373 a reference to a named field within a resource descriptor from a
14374 byte offset to a bit offset if required.
14376 Added some missing named fields from the resource descriptor
14377 support. These are the names that are automatically created by the
14378 compiler to reference fields within a descriptor. They are only
14379 valid at compile time and are not passed through to the AML
14382 Resource descriptor named fields are now typed as Integers and
14383 subject to compile-time typechecking when used in expressions.
14385 ------------------------------------------
14386 Summary of changes for this label: 05_18_01
14388 ACPI CA Core Subsystem:
14390 Fixed a couple of problems in the Field support code where bits
14391 from adjacent fields could be returned along with the proper field
14392 bits. Restructured the field support code to improve performance,
14393 readability and maintainability.
14395 New DEBUG_PRINTP macro automatically inserts the procedure name
14396 into the output, saving hundreds of copies of procedure name
14397 strings within the source, shrinking the memory footprint of the
14398 debug version of the core subsystem.
14400 Source Code Structure:
14402 The source code directory tree was restructured to reflect the
14403 current organization of the component architecture. Some files
14404 and directories have been moved and/or renamed.
14408 Fixed leaking kacpidpc processes.
14410 Fixed queueing event data even when /proc/acpi/event is not
14413 ASL Compiler, version X2020:
14415 Memory allocation performance enhancement - over 24X compile time
14416 improvement on large ASL files. Parse nodes and namestring
14417 buffers are now allocated from a large internal compiler buffer.
14419 The temporary .SRC file is deleted unless the "-s" option is
14422 The "-d" debug output option now sends all output to the .DBG file
14423 instead of the console.
14425 "External" second parameter is now optional
14427 "ElseIf" syntax now properly allows the predicate
14429 Last operand to "Load" now recognized as a Target operand
14431 Debug object can now be used anywhere as a normal object.
14433 ResourceTemplate now returns an object of type BUFFER
14435 EISAID now returns an object of type INTEGER
14437 "Index" now works with a STRING operand
14439 "LoadTable" now accepts optional parameters
14441 "ToString" length parameter is now optional
14443 "Interrupt (ResourceType," parse error fixed.
14445 "Register" with a user-defined region space parse error fixed
14447 Escaped backslash at the end of a string ("\\") scan/parse error
14450 "Revision" is now an object of type INTEGER.
14454 ------------------------------------------
14455 Summary of changes for this label: 05_02_01
14459 /proc/acpi/event now blocks properly.
14461 Removed /proc/sys/acpi. You can still dump your DSDT from
14464 ACPI CA Core Subsystem:
14466 Fixed a problem introduced in the previous label where some of the
14467 "small" resource descriptor types were not recognized.
14469 Improved error messages for the case where an ASL Field is outside
14470 the range of the parent operation region.
14472 ASL Compiler, version X2018:
14475 Added error detection for ASL Fields that extend beyond the length
14476 of the parent operation region (only if the length of the region
14477 is known at compile time.) This includes fields that have a
14478 minimum access width that is smaller than the parent region, and
14479 individual field units that are partially or entirely beyond the
14480 extent of the parent.
14484 ------------------------------------------
14485 Summary of changes for this label: 04_27_01
14487 ACPI CA Core Subsystem:
14489 Fixed a problem where the namespace mutex could be released at the
14490 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14492 Added optional thread ID output for debug traces, to simplify
14493 debugging of multiple threads. Added context switch notification
14494 when the debug code realizes that a different thread is now
14495 executing ACPI code.
14497 Some additional external data types have been prefixed with the
14498 string "ACPI_" for consistency. This may effect existing code.
14499 The data types affected are the external callback typedefs - e.g.,
14501 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14505 Fixed an issue with the OSL semaphore implementation where a
14506 thread was waking up with an error from receiving a SIGCHLD
14509 Linux version of ACPI CA now uses the system C library for string
14510 manipulation routines instead of a local implementation.
14512 Cleaned up comments and removed TBDs.
14514 ASL Compiler, version X2017:
14516 Enhanced error detection and reporting for all file I/O
14521 Programmer Reference updated to version 1.06.
14525 ------------------------------------------
14526 Summary of changes for this label: 04_13_01
14528 ACPI CA Core Subsystem:
14530 Restructured support for BufferFields and RegionFields.
14531 BankFields support is now fully operational. All known 32-bit
14532 limitations on field sizes have been removed. Both BufferFields
14533 and (Operation) RegionFields are now supported by the same field
14536 Resource support now supports QWORD address and IO resources. The
14537 16/32/64 bit address structures and the Extended IRQ structure
14538 have been changed to properly handle Source Resource strings.
14540 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14541 condition internally and must never be returned by AcpiOsThreadId.
14542 This reserved value was changed from 0 since Unix systems allow a
14547 Driver code reorganized to enhance portability
14549 Added a kernel configuration option to control ACPI_DEBUG
14551 Fixed the EC driver to honor _GLK.
14553 ASL Compiler, version X2016:
14555 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14556 address space was set to 0, not 0x7f as it should be.
14558 ------------------------------------------
14559 Summary of changes for this label: 03_13_01
14561 ACPI CA Core Subsystem:
14563 During ACPI initialization, the _SB_._INI method is now run if
14566 Notify handler fix - notifies are deferred until the parent method
14567 completes execution. This fixes the "mutex already acquired"
14568 issue seen occasionally.
14570 Part of the "implicit conversion" rules in ACPI 2.0 have been
14571 found to cause compatibility problems with existing ASL/AML. The
14572 convert "result-to-target-type" implementation has been removed
14573 for stores to method Args and Locals. Source operand conversion
14574 is still fully implemented. Possible changes to ACPI 2.0
14575 specification pending.
14577 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14580 Fix for compiler warnings for 64-bit compiles.
14584 /proc output aligned for easier parsing.
14586 Release-version compile problem fixed.
14588 New kernel configuration options documented in Configure.help.
14590 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14595 Power resource driver integrated with bus manager.
14597 Fixed kernel fault during active cooling for thermal zones.
14601 The source code tree has been restructured.
14605 ------------------------------------------
14606 Summary of changes for this label: 03_02_01
14608 Linux OS Services Layer (OSL):
14610 Major revision of all Linux-specific code.
14612 Modularized all ACPI-specific drivers.
14614 Added new thermal zone and power resource drivers.
14616 Revamped /proc interface (new functionality is under /proc/acpi).
14618 New kernel configuration options.
14620 Linux known issues:
14622 New kernel configuration options not documented in Configure.help
14626 Module dependencies not currently implemented. If used, they
14627 should be loaded in this order: busmgr, power, ec, system,
14628 processor, battery, ac_adapter, button, thermal.
14630 Modules will not load if CONFIG_MODVERSION is set.
14632 IBM 600E - entering S5 may reboot instead of shutting down.
14634 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14637 Some systems may fail with "execution mutex already acquired"
14640 ACPI CA Core Subsystem:
14642 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14643 for the deadlock detection code. Defined to return a non-zero, 32-
14644 bit thread ID for the currently executing thread. May be a non-
14645 zero constant integer on single-thread systems.
14647 Implemented deadlock detection for internal subsystem mutexes. We
14648 may add conditional compilation for this code (debug only) later.
14650 ASL/AML Mutex object semantics are now fully supported. This
14651 includes multiple acquires/releases by owner and support for the
14653 Mutex SyncLevel parameter.
14655 A new "Force Release" mechanism automatically frees all ASL
14656 Mutexes that have been acquired but not released when a thread
14657 exits the interpreter. This forces conformance to the ACPI spec
14658 ("All mutexes must be released when an invocation exits") and
14659 prevents deadlocked ASL threads. This mechanism can be expanded
14660 (later) to monitor other resource acquisitions if OEM ASL code
14661 continues to misbehave (which it will).
14663 Several new ACPI exception codes have been added for the Mutex
14666 Recursive method calls are now allowed and supported (the ACPI
14667 spec does in fact allow recursive method calls.) The number of
14668 recursive calls is subject to the restrictions imposed by the
14669 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14672 Implemented support for the SyncLevel parameter for control
14673 methods (ACPI 2.0 feature)
14675 Fixed a deadlock problem when multiple threads attempted to use
14678 Fixed a problem where the string length of a String package
14679 element was not always set in a package returned from
14680 AcpiEvaluateObject.
14682 Fixed a problem where the length of a String package element was
14683 not always included in the length of the overall package returned
14684 from AcpiEvaluateObject.
14686 Added external interfaces (Acpi*) to the ACPI debug memory
14687 manager. This manager keeps a list of all outstanding
14688 allocations, and can therefore detect memory leaks and attempts to
14689 free memory blocks more than once. Useful for code such as the
14690 power manager, etc. May not be appropriate for device drivers.
14691 Performance with the debug code enabled is slow.
14693 The ACPI Global Lock is now an optional hardware element.
14695 ASL Compiler Version X2015:
14697 Integrated changes to allow the compiler to be generated on
14698 multiple platforms.
14700 Linux makefile added to generate the compiler on Linux
14704 All platform-specific headers have been moved to their own
14705 subdirectory, Include/Platform.
14707 New source file added, Interpreter/ammutex.c
14709 New header file, Include/acstruct.h
14713 The programmer reference has been updated for the following new
14714 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
14716 ------------------------------------------
14717 Summary of changes for this label: 02_08_01
14719 Core ACPI CA Subsystem: Fixed a problem where an error was
14720 incorrectly returned if the return resource buffer was larger than
14721 the actual data (in the resource interfaces).
14723 References to named objects within packages are resolved to the
14725 full pathname string before packages are returned directly (via
14726 the AcpiEvaluateObject interface) or indirectly via the resource
14729 Linux OS Services Layer (OSL):
14731 Improved /proc battery interface.
14734 Added C-state debugging output and other miscellaneous fixes.
14736 ASL Compiler Version X2014:
14738 All defined method arguments can now be used as local variables,
14739 including the ones that are not actually passed in as parameters.
14740 The compiler tracks initialization of the arguments and issues an
14741 exception if they are used without prior assignment (just like
14744 The -o option now specifies a filename prefix that is used for all
14745 output files, including the AML output file. Otherwise, the
14746 default behavior is as follows: 1) the AML goes to the file
14747 specified in the DSDT. 2) all other output files use the input
14748 source filename as the base.
14750 ------------------------------------------
14751 Summary of changes for this label: 01_25_01
14753 Core ACPI CA Subsystem: Restructured the implementation of object
14754 store support within the interpreter. This includes support for
14755 the Store operator as well as any ASL operators that include a
14758 Partially implemented support for Implicit Result-to-Target
14759 conversion. This is when a result object is converted on the fly
14760 to the type of an existing target object. Completion of this
14761 support is pending further analysis of the ACPI specification
14762 concerning this matter.
14764 CPU-specific code has been removed from the subsystem (hardware
14767 New Power Management Timer functions added
14769 Linux OS Services Layer (OSL): Moved system state transition code
14770 to the core, fixed it, and modified Linux OSL accordingly.
14772 Fixed C2 and C3 latency calculations.
14775 We no longer use the compilation date for the version message on
14776 initialization, but retrieve the version from AcpiGetSystemInfo().
14778 Incorporated for fix Sony VAIO machines.
14780 Documentation: The Programmer Reference has been updated and
14784 ASL Compiler: Version X2013: Fixed a problem where the line
14785 numbering and error reporting could get out of sync in the
14786 presence of multiple include files.
14788 ------------------------------------------
14789 Summary of changes for this label: 01_15_01
14791 Core ACPI CA Subsystem:
14793 Implemented support for type conversions in the execution of the
14794 ASL Concatenate operator (The second operand is converted to
14795 match the type of the first operand before concatenation.)
14797 Support for implicit source operand conversion is partially
14798 implemented. The ASL source operand types Integer, Buffer, and
14799 String are freely interchangeable for most ASL operators and are
14800 converted by the interpreter on the fly as required. Implicit
14801 Target operand conversion (where the result is converted to the
14802 target type before storing) is not yet implemented.
14804 Support for 32-bit and 64-bit BCD integers is implemented.
14806 Problem fixed where a field read on an aligned field could cause a
14807 read past the end of the field.
14809 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
14810 does not return a value, but the caller expects one. (The ASL
14811 compiler flags this as a warning.)
14816 1. Static typechecking of all operands is implemented. This
14817 prevents the use of invalid objects (such as using a Package where
14818 an Integer is required) at compile time instead of at interpreter
14820 2. The ASL source line is printed with ALL errors and warnings.
14821 3. Bug fix for source EOF without final linefeed.
14822 4. Debug option is split into a parse trace and a namespace trace.
14823 5. Namespace output option (-n) includes initial values for
14824 integers and strings.
14825 6. Parse-only option added for quick syntax checking.
14826 7. Compiler checks for duplicate ACPI name declarations
14829 1. Relaxed typechecking to allow interchangeability between
14830 strings, integers, and buffers. These types are now converted by
14831 the interpreter at runtime.
14832 2. Compiler reports time taken by each internal subsystem in the
14836 ------------------------------------------
14837 Summary of changes for this label: 12_14_00
14841 This is the first official release of the compiler. Since the
14842 compiler requires elements of the Core Subsystem, this label
14843 synchronizes everything.
14845 ------------------------------------------
14846 Summary of changes for this label: 12_08_00
14849 Fixed a problem where named references within the ASL definition
14850 of both OperationRegions and CreateXXXFields did not work
14851 properly. The symptom was an AE_AML_OPERAND_TYPE during
14852 initialization of the region/field. This is similar (but not
14853 related internally) to the problem that was fixed in the last
14856 Implemented both 32-bit and 64-bit support for the BCD ASL
14857 functions ToBCD and FromBCD.
14859 Updated all legal headers to include "2000" in the copyright
14862 ------------------------------------------
14863 Summary of changes for this label: 12_01_00
14865 Fixed a problem where method invocations within the ASL definition
14866 of both OperationRegions and CreateXXXFields did not work
14867 properly. The symptom was an AE_AML_OPERAND_TYPE during
14868 initialization of the region/field:
14870 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
14871 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
14874 Fixed a problem where operators with more than one nested
14875 subexpression would fail. The symptoms were varied, by mostly
14876 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
14877 problem that has gone unnoticed until now.
14879 Subtract (Add (1,2), Multiply (3,4))
14881 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
14882 previous build (The prefix part of a relative path was handled
14885 Fixed a problem where Operation Region initialization failed if
14886 the operation region name was a "namepath" instead of a simple
14887 "nameseg". Symptom was an AE_NO_OPERAND error.
14889 Fixed a problem where an assignment to a local variable via the
14890 indirect RefOf mechanism only worked for the first such
14891 assignment. Subsequent assignments were ignored.
14893 ------------------------------------------
14894 Summary of changes for this label: 11_15_00
14896 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
14897 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
14898 the AML interpreter does NOT have support for the new 2.0 ASL
14899 grammar terms at this time.
14901 All ACPI hardware access is via the GAS structures in the ACPI 2.0
14904 All physical memory addresses across all platforms are now 64 bits
14905 wide. Logical address width remains dependent on the platform
14908 AcpiOsMapMemory interface changed to a 64-bit physical address.
14910 The AML interpreter integer size is now 64 bits, as per the ACPI
14913 For backwards compatibility with ACPI 1.0, ACPI tables with a
14914 revision number less than 2 use 32-bit integers only.
14916 Fixed a problem where the evaluation of OpRegion operands did not
14917 always resolve them to numbers properly.
14919 ------------------------------------------
14920 Summary of changes for this label: 10_20_00
14922 Fix for CBN_._STA issue. This fix will allow correct access to
14923 CBN_ OpRegions when the _STA returns 0x8.
14925 Support to convert ACPI constants (Ones, Zeros, One) to actual
14926 values before a package object is returned
14928 Fix for method call as predicate to if/while construct causing
14929 incorrect if/while behavior
14931 Fix for Else block package lengths sometimes calculated wrong (if
14934 Fix for Processor object length field, was always zero
14936 Table load abort if FACP sanity check fails
14938 Fix for problem with Scope(name) if name already exists
14940 Warning emitted if a named object referenced cannot be found
14941 (resolved) during method execution.
14947 ------------------------------------------
14948 Summary of changes for this label: 9_29_00
14950 New table initialization interfaces: AcpiInitializeSubsystem no
14951 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
14952 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
14953 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
14956 Note: These interface changes require changes to all existing OSDs
14958 The PCI_Config default address space handler is always installed
14959 at the root namespace object.
14961 -------------------------------------------
14962 Summary of changes for this label: 09_15_00
14964 The new initialization architecture is implemented. New
14965 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
14966 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
14968 (Namespace is automatically loaded when a table is loaded)
14970 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
14971 52 bytes to 32 bytes. There is usually one of these for every
14972 namespace object, so the memory savings is significant.
14974 Implemented just-in-time evaluation of the CreateField operators.
14976 Bug fixes for IA-64 support have been integrated.
14978 Additional code review comments have been implemented
14980 The so-called "third pass parse" has been replaced by a final walk
14981 through the namespace to initialize all operation regions (address
14982 spaces) and fields that have not yet been initialized during the
14983 execution of the various _INI and REG methods.
14985 New file - namespace/nsinit.c
14987 -------------------------------------------
14988 Summary of changes for this label: 09_01_00
14990 Namespace manager data structures have been reworked to change the
14991 primary object from a table to a single object. This has
14992 resulted in dynamic memory savings of 3X within the namespace and
14993 2X overall in the ACPI CA subsystem.
14995 Fixed problem where the call to AcpiEvFindPciRootBuses was
14996 inadvertently left commented out.
14998 Reduced the warning count when generating the source with the GCC
15001 Revision numbers added to each module header showing the
15002 SourceSafe version of the file. Please refer to this version
15003 number when giving us feedback or comments on individual modules.
15005 The main object types within the subsystem have been renamed to
15006 clarify their purpose:
15008 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
15009 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
15010 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
15012 NOTE: no changes to the initialization sequence are included in
15015 -------------------------------------------
15016 Summary of changes for this label: 08_23_00
15018 Fixed problem where TerminateControlMethod was being called
15019 multiple times per method
15021 Fixed debugger problem where single stepping caused a semaphore to
15024 Improved performance through additional parse object caching -
15025 added ACPI_EXTENDED_OP type
15027 -------------------------------------------
15028 Summary of changes for this label: 08_10_00
15030 Parser/Interpreter integration: Eliminated the creation of
15031 complete parse trees for ACPI tables and control methods.
15032 Instead, parse subtrees are created and then deleted as soon as
15033 they are processed (Either entered into the namespace or executed
15034 by the interpreter). This reduces the use of dynamic kernel
15035 memory significantly. (about 10X)
15037 Exception codes broken into classes and renumbered. Be sure to
15038 recompile all code that includes acexcep.h. Hopefully we won't
15039 have to renumber the codes again now that they are split into
15040 classes (environment, programmer, AML code, ACPI table, and
15043 Fixed some additional alignment issues in the Resource Manager
15046 Implemented semaphore tracking in the AcpiExec utility, and fixed
15047 several places where mutexes/semaphores were being unlocked
15048 without a corresponding lock operation. There are no known
15049 semaphore or mutex "leaks" at this time.
15051 Fixed the case where an ASL Return operator is used to return an
15054 -------------------------------------------
15055 Summary of changes for this label: 07_28_00
15057 Fixed a problem with the way addresses were calculated in
15058 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
15059 manifested itself when a Field was created with WordAccess or
15060 DwordAccess, but the field unit defined within the Field was less
15062 than a Word or Dword.
15064 Fixed a problem in AmlDumpOperands() module's loop to pull
15065 operands off of the operand stack to display information. The
15066 problem manifested itself as a TLB error on 64-bit systems when
15067 accessing an operand stack with two or more operands.
15069 Fixed a problem with the PCI configuration space handlers where
15070 context was getting confused between accesses. This required a
15071 change to the generic address space handler and address space
15072 setup definitions. Handlers now get both a global handler context
15073 (this is the one passed in by the user when executing
15074 AcpiInstallAddressSpaceHandler() and a specific region context
15075 that is unique to each region (For example, the _ADR, _SEG and
15076 _BBN values associated with a specific region). The generic
15077 function definitions have changed to the following:
15079 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
15080 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
15081 *HandlerContext, // This used to be void *Context void
15082 *RegionContext); // This is an additional parameter
15084 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
15085 RegionHandle, UINT32 Function, void *HandlerContext, void
15086 **RegionContext); // This used to be **ReturnContext
15088 -------------------------------------------
15089 Summary of changes for this label: 07_21_00
15091 Major file consolidation and rename. All files within the
15092 interpreter have been renamed as well as most header files. This
15093 was done to prevent collisions with existing files in the host
15094 OSs -- filenames such as "config.h" and "global.h" seem to be
15095 quite common. The VC project files have been updated. All
15096 makefiles will require modification.
15098 The parser/interpreter integration continues in Phase 5 with the
15099 implementation of a complete 2-pass parse (the AML is parsed
15100 twice) for each table; This avoids the construction of a huge
15101 parse tree and therefore reduces the amount of dynamic memory
15102 required by the subsystem. Greater use of the parse object cache
15103 means that performance is unaffected.
15105 Many comments from the two code reviews have been rolled in.
15107 The 64-bit alignment support is complete.
15109 -------------------------------------------
15110 Summary of changes for this label: 06_30_00
15112 With a nod and a tip of the hat to the technology of yesteryear,
15113 we've added support in the source code for 80 column output
15114 devices. The code is now mostly constrained to 80 columns or
15115 less to support environments and editors that 1) cannot display
15116 or print more than 80 characters on a single line, and 2) cannot
15117 disable line wrapping.
15119 A major restructuring of the namespace data structure has been
15120 completed. The result is 1) cleaner and more
15121 understandable/maintainable code, and 2) a significant reduction
15122 in the dynamic memory requirement for each named ACPI object
15125 -------------------------------------------
15126 Summary of changes for this label: 06_23_00
15128 Linux support has been added. In order to obtain approval to get
15129 the ACPI CA subsystem into the Linux kernel, we've had to make
15130 quite a few changes to the base subsystem that will affect all
15131 users (all the changes are generic and OS- independent). The
15132 effects of these global changes have been somewhat far reaching.
15133 Files have been merged and/or renamed and interfaces have been
15134 renamed. The major changes are described below.
15136 Osd* interfaces renamed to AcpiOs* to eliminate namespace
15137 pollution/confusion within our target kernels. All OSD
15138 interfaces must be modified to match the new naming convention.
15140 Files merged across the subsystem. A number of the smaller source
15141 and header files have been merged to reduce the file count and
15142 increase the density of the existing files. There are too many
15143 to list here. In general, makefiles that call out individual
15144 files will require rebuilding.
15146 Interpreter files renamed. All interpreter files now have the
15147 prefix am* instead of ie* and is*.
15149 Header files renamed: The acapi.h file is now acpixf.h. The
15150 acpiosd.h file is now acpiosxf.h. We are removing references to
15151 the acronym "API" since it is somewhat windowsy. The new name is
15152 "external interface" or xface or xf in the filenames.j
15155 All manifest constants have been forced to upper case (some were
15156 mixed case.) Also, the string "ACPI_" has been prepended to many
15157 (not all) of the constants, typedefs, and structs.
15159 The globals "DebugLevel" and "DebugLayer" have been renamed
15160 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
15162 All other globals within the subsystem are now prefixed with
15163 "AcpiGbl_" Internal procedures within the subsystem are now
15164 prefixed with "Acpi" (with only a few exceptions). The original
15165 two-letter abbreviation for the subcomponent remains after "Acpi"
15166 - for example, CmCallocate became AcpiCmCallocate.
15168 Added a source code translation/conversion utility. Used to
15169 generate the Linux source code, it can be modified to generate
15170 other types of source as well. Can also be used to cleanup
15171 existing source by removing extraneous spaces and blank lines.
15172 Found in tools/acpisrc/*
15174 OsdUnMapMemory was renamed to OsdUnmapMemory and then
15175 AcpiOsUnmapMemory. (UnMap became Unmap).
15177 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
15178 When set to one, this indicates that the caller wants to use the
15180 semaphore as a mutex, not a counting semaphore. ACPI CA uses
15181 both types. However, implementers of this call may want to use
15182 different OS primitives depending on the type of semaphore
15183 requested. For example, some operating systems provide separate
15185 "mutex" and "semaphore" interfaces - where the mutex interface is
15186 much faster because it doesn't have all the overhead of a full
15187 semaphore implementation.
15189 Fixed a deadlock problem where a method that accesses the PCI
15190 address space can block forever if it is the first access to the
15193 -------------------------------------------
15194 Summary of changes for this label: 06_02_00
15196 Support for environments that cannot handle unaligned data
15197 accesses (e.g. firmware and OS environments devoid of alignment
15198 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
15199 been added (via configurable macros) in these three areas: -
15200 Transfer of data from the raw AML byte stream is done via byte
15201 moves instead of word/dword/qword moves. - External objects are
15202 aligned within the user buffer, including package elements (sub-
15203 objects). - Conversion of name strings to UINT32 Acpi Names is now
15206 The Store operator was modified to mimic Microsoft's
15207 implementation when storing to a Buffer Field.
15209 Added a check of the BM_STS bit before entering C3.
15211 The methods subdirectory has been obsoleted and removed. A new
15212 file, cmeval.c subsumes the functionality.
15214 A 16-bit (DOS) version of AcpiExec has been developed. The
15215 makefile is under the acpiexec directory.