1 ----------------------------------------
3 24 July 2014. Summary of changes for version 20140724:
5 This release is available at https://acpica.org/downloads
7 The ACPI 5.1 specification has been released and is available at:
8 http://uefi.org/specs/access
11 0) ACPI 5.1 support in ACPICA:
13 ACPI 5.1 is fully supported in ACPICA as of this release.
15 New predefined names. Support includes iASL and runtime ACPICA
17 _CCA (Cache Coherency Attribute).
18 _DSD (Device-Specific Data). David Box.
20 Modifications to existing ACPI tables. Support includes headers, iASL
21 Data Table compiler, disassembler, and the template generator.
22 FADT - New fields and flags. Graeme Gregory.
23 GTDT - One new subtable and new fields. Tomasz Nowicki.
24 MADT - Two new subtables. Tomasz Nowicki.
25 PCCT - One new subtable.
28 New notification type for System Resource Affinity change events.
31 1) ACPICA kernel-resident subsystem:
33 Fixed a regression introduced in 20140627 where a fault can happen during
34 the deletion of Alias AML namespace objects. The problem affected both
35 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
37 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
38 simple mechanism to enable wake GPEs that have no associated handler or
39 control method. Rafael Wysocki.
41 Updated the AcpiEnableGpe interface to disallow the enable if there is no
42 handler or control method associated with the particular GPE. This will
43 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
45 Updated GPE handling and dispatch by disabling the GPE before clearing
46 the status bit for edge-triggered GPEs. Lv Zheng.
48 Added Timer() support to the AML Debug object. The current timer value is
49 now displayed with each invocation of (Store to) the debug object to
50 enable simple generation of execution times for AML code (method
51 execution for example.) ACPICA BZ 1093.
53 Example Code and Data Size: These are the sizes for the OS-independent
54 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
55 debug version of the code includes the debug output trace mechanism and
56 has a much larger code and data size.
59 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
60 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
62 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
63 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
66 2) iASL Compiler/Disassembler and Tools:
68 Fixed an issue with the recently added local printf implementation,
69 concerning width/precision specifiers that could cause incorrect output.
70 Lv Zheng. ACPICA BZ 1094.
72 Disassembler: Added support to detect buffers that contain UUIDs and
73 disassemble them to an invocation of the ToUUID operator. Also emit
74 commented descriptions of known ACPI-related UUIDs.
76 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
77 -u. Adds three new files.
79 iASL: Update table compiler and disassembler for DMAR table changes that
80 were introduced in September 2013. With assistance by David Woodhouse.
82 ----------------------------------------
83 27 June 2014. Summary of changes for version 20140627:
85 1) ACPICA kernel-resident subsystem:
87 Formatted Output: Implemented local versions of standard formatted output
88 utilities such as printf, etc. Over time, it has been discovered that
89 there are in fact many portability issues with printf, and the addition
90 of this feature will fix/prevent these issues once and for all. Some
91 known issues are summarized below:
93 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
94 for the Linux kernel and is %uI64 for some MSVC versions.
95 2) Invoking printf consistently in a manner that is portable across both
96 32-bit and 64-bit platforms is difficult at best in many situations.
97 3) The output format for pointers varies from system to system (leading
98 zeros especially), and leads to inconsistent output from ACPICA across
100 4) Certain platform-specific printf formats may conflict with ACPICA use.
101 5) If there is no local C library available, ACPICA now has local support
104 -- To address these printf issues in a complete manner, ACPICA now
105 directly implements a small subset of printf format specifiers, only
106 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
108 Implemented support for ACPICA generation within the EFI environment.
109 Initially, the AcpiDump utility is supported in the UEFI shell
110 environment. Lv Zheng.
112 Added a new external interface, AcpiLogError, to improve ACPICA
113 portability. This allows the host to redirect error messages from the
114 ACPICA utilities. Lv Zheng.
116 Added and deployed new OSL file I/O interfaces to improve ACPICA
124 There are C library implementations of these functions in the new file
125 service_layers/oslibcfs.c -- however, the functions can be implemented by
126 the local host in any way necessary. Lv Zheng.
128 Implemented a mechanism to disable/enable ACPI table checksum validation
129 at runtime. This can be useful when loading tables very early during OS
130 initialization when it may not be possible to map the entire table in
131 order to compute the checksum. Lv Zheng.
133 Fixed a buffer allocation issue for the Generic Serial Bus support.
134 Originally, a fixed buffer length was used. This change allows for
135 variable-length buffers based upon the protocol indicated by the field
136 access attributes. Reported by Lan Tianyu. Lv Zheng.
138 Fixed a problem where an object detached from a namespace node was not
139 properly terminated/cleared and could cause a circular list problem if
140 reattached. ACPICA BZ 1063. David Box.
142 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
144 Fixed a possible memory leak in an error return path within the function
145 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
147 Example Code and Data Size: These are the sizes for the OS-independent
148 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
149 debug version of the code includes the debug output trace mechanism and
150 has a much larger code and data size.
153 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
154 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
156 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
157 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
160 2) iASL Compiler/Disassembler and Tools:
162 Disassembler: Add dump of ASCII equivalent text within a comment at the
163 end of each line of the output for the Buffer() ASL operator.
165 AcpiDump: Miscellaneous changes:
166 Fixed repetitive table dump in -n mode.
167 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
168 the ACPI 2.0 GUID fails.
170 iASL: Fixed a problem where the compiler could fault if incorrectly given
171 an acpidump output file as input. ACPICA BZ 1088. David Box.
173 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
174 they are invoked without any arguments.
176 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
177 1086. Colin Ian King.
179 Disassembler: Cleaned up a block of code that extracts a parent Op
180 object. Added a comment that explains that the parent is guaranteed to be
181 valid in this case. ACPICA BZ 1069.
183 ----------------------------------------
184 24 April 2014. Summary of changes for version 20140424:
186 1) ACPICA kernel-resident subsystem:
188 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
189 Some of these tables are known to contain a trailing NULL entry. Lv
192 Removed an extraneous error message for the case where there are a large
193 number of system GPEs (> 124). This was the "32-bit FADT register is too
194 long to convert to GAS struct" message, which is irrelevant for GPEs
195 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
196 (limited capacity) GAS bit length. Also, several changes to ensure proper
197 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
200 Implemented and deployed additional configuration support for the public
201 ACPICA external interfaces. Entire classes of interfaces can now be
202 easily modified or configured out, replaced by stubbed inline functions
203 by default. Lv Zheng.
205 Moved all public ACPICA runtime configuration globals to the public
206 ACPICA external interface file for convenience. Also, removed some
207 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
209 Documentation: Added a new section to the ACPICA reference describing the
210 maximum number of GPEs that can be supported by the FADT-defined GPEs in
211 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
214 Example Code and Data Size: These are the sizes for the OS-independent
215 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
216 debug version of the code includes the debug output trace mechanism and
217 has a much larger code and data size.
220 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
221 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
223 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
224 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
227 2) iASL Compiler/Disassembler and Tools:
229 iASL and disassembler: Add full support for the LPIT table (Low Power
230 Idle Table). Includes support in the disassembler, data table compiler,
231 and template generator.
234 1) Add option to force the use of the RSDT (over the XSDT).
235 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
237 iASL: Add check for predefined packages that are too large. For
238 predefined names that contain subpackages, check if each subpackage is
239 too large. (Check for too small already exists.)
241 Debugger: Updated the GPE command (which simulates a GPE by executing the
242 GPE code paths in ACPICA). The GPE device is now optional, and defaults
243 to the GPE 0/1 FADT-defined blocks.
245 Unix application OSL: Update line-editing support. Add additional error
246 checking and take care not to reset terminal attributes on exit if they
247 were never set. This should help guarantee that the terminal is always
248 left in the previous state on program exit.
250 ----------------------------------------
251 25 March 2014. Summary of changes for version 20140325:
253 1) ACPICA kernel-resident subsystem:
255 Updated the auto-serialize feature for control methods. This feature
256 automatically serializes all methods that create named objects in order
257 to prevent runtime errors. The update adds support to ignore the
258 currently executing AML SyncLevel when invoking such a method, in order
259 to prevent disruption of any existing SyncLevel priorities that may exist
260 in the AML code. Although the use of SyncLevels is relatively rare, this
261 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
262 appear on some machines starting with the 20140214 release.
264 Added a new external interface to allow the host to install ACPI tables
265 very early, before the namespace is even created. AcpiInstallTable gives
266 the host additional flexibility for ACPI table management. Tables can be
267 installed directly by the host as if they had originally appeared in the
268 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
269 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
270 with additional internal restructuring and cleanup. See the ACPICA
271 Reference for interface details. Lv Zheng.
273 Added validation of the checksum for all incoming dynamically loaded
274 tables (via external interfaces or via AML Load/LoadTable operators). Lv
277 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
278 and GPE handler removal. Restructured calls to eliminate possible race
279 conditions. Lv Zheng.
281 Added a warning for the use/execution of the ASL/AML Unload (table)
282 operator. This will help detect and identify machines that use this
283 operator if and when it is ever used. This operator has never been seen
284 in the field and the usage model and possible side-effects of the drastic
285 runtime action of a full table removal are unknown.
287 Reverted the use of #pragma push/pop which was introduced in the 20140214
288 release. It appears that push and pop are not implemented by enough
289 compilers to make the use of this feature feasible for ACPICA at this
290 time. However, these operators may be deployed in a future ACPICA
293 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
296 Source code generation:
297 1) Disabled the use of the "strchr" macro for the gcc-specific
298 generation. For some versions of gcc, this macro can periodically expose
299 a compiler bug which in turn causes compile-time error(s).
300 2) Added support for PPC64 compilation. Colin Ian King.
302 Example Code and Data Size: These are the sizes for the OS-independent
303 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
304 debug version of the code includes the debug output trace mechanism and
305 has a much larger code and data size.
308 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
309 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
311 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
312 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
315 2) iASL Compiler/Disassembler and Tools:
317 Disassembler: Added several new features to improve the readability of
318 the resulting ASL code. Extra information is emitted within comment
319 fields in the ASL code:
320 1) Known _HID/_CID values are decoded to descriptive text.
321 2) Standard values for the Notify() operator are decoded to descriptive
323 3) Target operands are expanded to full pathnames (in a comment) when
326 Disassembler: Miscellaneous updates for extern() handling:
327 1) Abort compiler if file specified by -fe option does not exist.
328 2) Silence unnecessary warnings about argument count mismatches.
329 3) Update warning messages concerning unresolved method externals.
330 4) Emit "UnknownObj" keyword for externals whose type cannot be
334 1) Added the -a option to display both the ASL syntax and the AML
335 encoding for an input ASL operator. This effectively displays all known
336 information about an ASL operator with one AcpiHelp invocation.
337 2) Added substring match support (similar to a wildcard) for the -i
338 (_HID/PNP IDs) option.
340 iASL/Disassembler: Since this tool does not yet support execution on big-
341 endian machines, added detection of endianness and an error message if
342 execution is attempted on big-endian. Support for big-endian within iASL
343 is a feature that is on the ACPICA to-be-done list.
346 1) Remove option to extract binary files from an acpidump; this function
347 is made obsolete by the AcpiXtract utility.
348 2) General cleanup of open files and allocated buffers.
350 ----------------------------------------
351 14 February 2014. Summary of changes for version 20140214:
353 1) ACPICA kernel-resident subsystem:
355 Implemented a new mechanism to proactively prevent problems with ill-
356 behaved reentrant control methods that create named ACPI objects. This
357 behavior is illegal as per the ACPI specification, but is nonetheless
358 frequently seen in the field. Previously, this could lead to an
359 AE_ALREADY_EXISTS exception if the method was actually entered by more
360 than one thread. This new mechanism detects such methods at table load
361 time and marks them "serialized" to prevent reentrancy. A new global
362 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
363 feature if desired. This mechanism and global option obsoletes and
364 supersedes the previous AcpiGbl_SerializeAllMethods option.
366 Added the "Windows 2013" string to the _OSI support. ACPICA will now
367 respond TRUE to _OSI queries with this string. It is the stated policy of
368 ACPICA to add new strings to the _OSI support as soon as possible after
369 they are defined. See the full ACPICA _OSI policy which has been added to
370 the utilities/utosi.c file.
372 Hardened/updated the _PRT return value auto-repair code:
373 1) Do not abort the repair on a single subpackage failure, continue to
374 check all subpackages.
375 2) Add check for the minimum subpackage length (4).
376 3) Properly handle extraneous NULL package elements.
378 Added support to avoid the possibility of infinite loops when traversing
379 object linked lists. Never allow an infinite loop, even in the face of
380 corrupted object lists.
382 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
383 pack(pop) directives to ensure that the ACPICA headers are independent of
384 compiler settings or other host headers.
386 Example Code and Data Size: These are the sizes for the OS-independent
387 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
388 debug version of the code includes the debug output trace mechanism and
389 has a much larger code and data size.
392 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
393 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
395 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
396 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
399 2) iASL Compiler/Disassembler and Tools:
401 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
402 first reserved field was incorrectly forced to have a value of zero. This
403 change correctly forces the field to have a value of one. ACPICA BZ 1081.
405 Debugger: Added missing support for the "Extra" and "Data" subobjects
406 when displaying object data.
408 Debugger: Added support to display entire object linked lists when
409 displaying object data.
411 iASL: Removed the obsolete -g option to obtain ACPI tables from the
412 Windows registry. This feature has been superseded by the acpidump
415 ----------------------------------------
416 14 January 2014. Summary of changes for version 20140114:
418 1) ACPICA kernel-resident subsystem:
420 Updated all ACPICA copyrights and signons to 2014. Added the 2014
421 copyright to all module headers and signons, including the standard Linux
422 header. This affects virtually every file in the ACPICA core subsystem,
423 iASL compiler, all ACPICA utilities, and the test suites.
425 Improved parameter validation for AcpiInstallGpeBlock. Added the
427 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
428 2) There is not already a GPE block attached to the device.
429 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
432 Correctly support "references" in the ACPI_OBJECT. This change fixes the
433 support to allow references (namespace nodes) to be passed as arguments
434 to control methods via the evaluate object interface. This is probably
435 most useful for testing purposes, however.
437 Improved support for 32/64 bit physical addresses in printf()-like
438 output. This change improves the support for physical addresses in printf
439 debug statements and other output on both 32-bit and 64-bit hosts. It
440 consistently outputs the appropriate number of bytes for each host. The
441 %p specifier is unsatisfactory since it does not emit uniform output on
442 all hosts/clib implementations (on some, leading zeros are not supported,
443 leading to difficult-to-read output).
445 Example Code and Data Size: These are the sizes for the OS-independent
446 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
447 debug version of the code includes the debug output trace mechanism and
448 has a much larger code and data size.
451 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
452 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
454 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
455 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
458 2) iASL Compiler/Disassembler and Tools:
460 iASL: Fix a possible fault when using the Connection() operator. Fixes a
461 problem if the parent Field definition for the Connection operator refers
462 to an operation region that does not exist. ACPICA BZ 1064.
464 AcpiExec: Load of local test tables is now optional. The utility has the
465 capability to load some various tables to test features of ACPICA.
466 However, there are enough of them that the output of the utility became
467 confusing. With this change, only the required local tables are displayed
468 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
469 line specification. This makes the default output simler and easier to
470 understand. The -el command line option restores the original behavior
471 for testing purposes.
473 AcpiExec: Added support for overlapping operation regions. This change
474 expands the simulation of operation regions by supporting regions that
475 overlap within the given address space. Supports SystemMemory and
476 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
478 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
479 allows AcpiExec to simulate these address spaces, similar to the current
480 support for SystemMemory and SystemIO.
482 Debugger: Added new command to read/write/compare all namespace objects.
483 The command "test objects" will exercise the entire namespace by writing
484 new values to each data object, and ensuring that the write was
485 successful. The original value is then restored and verified.
487 Debugger: Added the "test predefined" command. This change makes this
488 test public and puts it under the new "test" command. The test executes
489 each and every predefined name within the current namespace.
491 ----------------------------------------
492 18 December 2013. Summary of changes for version 20131218:
494 Global note: The ACPI 5.0A specification was released this month. There
495 are no changes needed for ACPICA since this release of ACPI is an
496 errata/clarification release. The specification is available at
500 1) ACPICA kernel-resident subsystem:
502 Added validation of the XSDT root table if it is present. Some older
503 platforms contain an XSDT that is ill-formed or otherwise invalid (such
504 as containing some or all entries that are NULL pointers). This change
505 adds a new function to validate the XSDT before actually using it. If the
506 XSDT is found to be invalid, ACPICA will now automatically fall back to
507 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
508 ACPICA and enhanced by Lv Zheng and Bob Moore.
510 Added a runtime option to ignore the XSDT and force the use of the RSDT.
511 This change adds a runtime option that will force ACPICA to use the RSDT
512 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
513 requires that an XSDT be used instead of the RSDT, the XSDT has been
514 found to be corrupt or ill-formed on some machines. Lv Zheng.
516 Added a runtime option to favor 32-bit FADT register addresses over the
517 64-bit addresses. This change adds an option to favor 32-bit FADT
518 addresses when there is a conflict between the 32-bit and 64-bit versions
519 of the same register. The default behavior is to use the 64-bit version
520 in accordance with the ACPI specification. This can now be overridden via
521 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
523 During the change above, the internal "Convert FADT" and "Verify FADT"
524 functions have been merged to simplify the code, making it easier to
525 understand and maintain. ACPICA BZ 933.
527 Improve exception reporting and handling for GPE block installation.
528 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
529 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
531 Added helper macros to extract bus/segment numbers from the HEST table.
532 This change adds two macros to extract the encoded bus and segment
533 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
534 Betty Dall <betty.dall@hp.com>
536 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
537 by ACPICA. It is not a public macro, so it should have no effect on
538 existing OSV code. Lv Zheng.
540 Example Code and Data Size: These are the sizes for the OS-independent
541 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
542 debug version of the code includes the debug output trace mechanism and
543 has a much larger code and data size.
546 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
547 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
549 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
550 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
553 2) iASL Compiler/Disassembler and Tools:
555 Disassembler: Improved pathname support for emitted External()
556 statements. This change adds full pathname support for external names
557 that have been resolved internally by the inclusion of additional ACPI
558 tables (via the iASL -e option). Without this change, the disassembler
559 can emit multiple externals for the same object, or it become confused
560 when the Scope() operator is used on an external object. Overall, greatly
561 improves the ability to actually recompile the emitted ASL code when
562 objects a referenced across multiple ACPI tables. Reported by Michael
563 Tsirkin (mst@redhat.com).
565 Tests/ASLTS: Updated functional control suite to execute with no errors.
566 David Box. Fixed several errors related to the testing of the interpreter
567 slack mode. Lv Zheng.
569 iASL: Added support to detect names that are declared within a control
570 method, but are unused (these are temporary names that are only valid
571 during the time the method is executing). A remark is issued for these
572 cases. ACPICA BZ 1022.
574 iASL: Added full support for the DBG2 table. Adds full disassembler,
575 table compiler, and template generator support for the DBG2 table (Debug
578 iASL: Added full support for the PCCT table, update the table definition.
579 Updates the PCCT table definition in the actbl3.h header and adds table
580 compiler and template generator support.
582 iASL: Added an option to emit only error messages (no warnings/remarks).
583 The -ve option will enable only error messages, warnings and remarks are
584 suppressed. This can simplify debugging when only the errors are
585 important, such as when an ACPI table is disassembled and there are many
586 warnings and remarks -- but only the actual errors are of real interest.
588 Example ACPICA code (source/tools/examples): Updated the example code so
589 that it builds to an actual working program, not just example code. Added
590 ACPI tables and execution of an example control method in the DSDT. Added
591 makefile support for Unix generation.
593 ----------------------------------------
594 15 November 2013. Summary of changes for version 20131115:
596 This release is available at https://acpica.org/downloads
599 1) ACPICA kernel-resident subsystem:
601 Resource Manager: Fixed loop termination for the "get AML length"
602 function. The loop previously had an error termination on a NULL resource
603 pointer, which can never happen since the loop simply increments a valid
604 resource pointer. This fix changes the loop to terminate with an error on
605 an invalid end-of-buffer condition. The problem can be seen as an
606 infinite loop by callers to AcpiSetCurrentResources with an invalid or
607 corrupted resource descriptor, or a resource descriptor that is missing
608 an END_TAG descriptor. Reported by Dan Carpenter
609 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
611 Table unload and ACPICA termination: Delete all attached data objects
612 during namespace node deletion. This fix updates namespace node deletion
613 to delete the entire list of attached objects (attached via
614 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
615 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
617 ACPICA termination: Added support to delete all objects attached to the
618 root namespace node. This fix deletes any and all objects that have been
619 attached to the root node via AcpiAttachData. Previously, none of these
620 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
622 Debug output: Do not emit the function nesting level for the in-kernel
623 build. The nesting level is really only useful during a single-thread
624 execution. Therefore, only enable this output for the AcpiExec utility.
625 Also, only emit the thread ID when executing under AcpiExec (Context
626 switches are still always detected and a message is emitted). ACPICA BZ
629 Example Code and Data Size: These are the sizes for the OS-independent
630 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
631 debug version of the code includes the debug output trace mechanism and
632 has a much larger code and data size.
635 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
636 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
638 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
639 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
642 2) iASL Compiler/Disassembler and Tools:
644 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
645 correct portable POSIX header for terminal control functions.
647 Disassembler: Fixed control method invocation issues related to the use
648 of the CondRefOf() operator. The problem is seen in the disassembly where
649 control method invocations may not be disassembled properly if the
650 control method name has been used previously as an argument to CondRefOf.
651 The solution is to not attempt to emit an external declaration for the
652 CondRefOf target (it is not necessary in the first place). This prevents
653 disassembler object type confusion. ACPICA BZ 988.
655 Unix Makefiles: Added an option to disable compiler optimizations and the
656 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
657 with optimizations (reportedly, gcc 4.4 for example). This change adds a
658 command line option for make (NOOPT) that disables all compiler
659 optimizations and the _FORTIFY_SOURCE compiler flag. The default
660 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
661 1034. Lv Zheng, Bob Moore.
663 Tests/ASLTS: Added options to specify individual test cases and modes.
664 This allows testers running aslts.sh to optionally specify individual
665 test modes and test cases. Also added an option to disable the forced
666 generation of the ACPICA tools from source if desired. Lv Zheng.
668 ----------------------------------------
669 27 September 2013. Summary of changes for version 20130927:
671 This release is available at https://acpica.org/downloads
674 1) ACPICA kernel-resident subsystem:
676 Fixed a problem with store operations to reference objects. This change
677 fixes a problem where a Store operation to an ArgX object that contained
679 reference to a field object did not complete the automatic dereference
681 then write to the actual field object. Instead, the object type of the
682 field object was inadvertently changed to match the type of the source
683 operand. The new behavior will actually write to the field object (buffer
684 field or field unit), thus matching the correct ACPI-defined behavior.
686 Implemented support to allow the host to redefine individual OSL
687 prototypes. This change enables the host to redefine OSL prototypes found
688 in the acpiosxf.h file. This allows the host to implement OSL interfaces
689 with a macro or inlined function. Further, it allows the host to add any
690 additional required modifiers such as __iomem, __init, __exit, etc., as
691 necessary on a per-interface basis. Enables maximum flexibility for the
692 OSL interfaces. Lv Zheng.
694 Hardcoded the access width for the FADT-defined reset register. The ACPI
695 specification requires the reset register width to be 8 bits. ACPICA now
696 hardcodes the width to 8 and ignores the FADT width value. This provides
697 compatibility with other ACPI implementations that have allowed BIOS code
698 with bad register width values to go unnoticed. Matthew Garett, Bob
702 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
704 in the OSL header (acpiosxf). The change modifies the position of this
705 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
706 build issues if the OSL defines the implementation of the interface to be
707 an inline stub function. Lv Zheng.
709 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
710 initialization interfaces. This change adds a new macro for the main init
711 and terminate external interfaces in order to support hosts that require
712 additional or different processing for these functions. Changed from
713 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
716 Cleaned up the memory allocation macros for configurability. In the
718 case, the ACPI_ALLOCATE and related macros now resolve directly to their
719 respective AcpiOs* OSL interfaces. Two options:
720 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
721 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
722 2) For AcpiExec (and for debugging), the macros can optionally be
724 to the local ACPICA interfaces that track each allocation (local tracking
725 is used to immediately detect memory leaks).
728 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
729 to predefine this macro to either TRUE or FALSE during the system build.
731 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
733 Example Code and Data Size: These are the sizes for the OS-independent
734 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
735 debug version of the code includes the debug output trace mechanism and
736 has a much larger code and data size.
739 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
740 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
742 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
743 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
746 2) iASL Compiler/Disassembler and Tools:
748 iASL: Implemented wildcard support for the -e option. This simplifies use
749 when there are many SSDTs that must be included to resolve external
751 declarations. ACPICA BZ 1041. Example:
752 iasl -e ssdt*.dat -d dsdt.dat
754 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
755 adds a portable module that implements full history and limited line
756 editing for Unix and Linux systems. It does not use readline() due to
757 portability issues. Instead it uses the POSIX termio interface to put the
758 terminal in raw input mode so that the various special keys can be
760 (such as up/down-arrow for history support and left/right-arrow for line
761 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
763 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
764 one or more spaces. This provides compatible with early or different
765 versions of the AcpiDump utility. ACPICA BZ 1044.
767 AcpiDump: Do not ignore tables that contain only an ACPI table header.
768 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
769 no other data. This change adds support to dump these tables. Any tables
770 shorter than the length of an ACPI table header remain in error (an error
771 message is emitted). Reported by Yi Li.
773 Debugger: Echo actual command along with the "unknown command" message.
775 ----------------------------------------
776 23 August 2013. Summary of changes for version 20130823:
778 1) ACPICA kernel-resident subsystem:
780 Implemented support for host-installed System Control Interrupt (SCI)
781 handlers. Certain ACPI functionality requires the host to handle raw
782 SCIs. For example, the "SCI Doorbell" that is defined for memory power
783 state support requires the host device driver to handle SCIs to examine
784 if the doorbell has been activated. Multiple SCI handlers can be
785 installed to allow for future expansion. New external interfaces are
786 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
787 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
789 Operation region support: Never locally free the handler "context"
790 pointer. This change removes some dangerous code that attempts to free
791 the handler context pointer in some (rare) circumstances. The owner of
792 the handler owns this pointer and the ACPICA code should never touch it.
793 Although not seen to be an issue in any kernel, it did show up as a
794 problem (fault) under AcpiExec. Also, set the internal storage field for
795 the context pointer to zero when the region is deactivated, simply for
796 sanity. David Box. ACPICA BZ 1039.
798 AcpiRead: On error, do not modify the return value target location. If an
799 error happens in the middle of a split 32/32 64-bit I/O operation, do not
800 modify the target of the return value pointer. Makes the code consistent
801 with the rest of ACPICA. Bjorn Helgaas.
803 Example Code and Data Size: These are the sizes for the OS-independent
804 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
805 debug version of the code includes the debug output trace mechanism and
806 has a much larger code and data size.
809 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
810 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
812 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
813 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
816 2) iASL Compiler/Disassembler and Tools:
818 AcpiDump: Implemented several new features and fixed some problems:
819 1) Added support to dump the RSDP, RSDT, and XSDT tables.
820 2) Added support for multiple table instances (SSDT, UEFI).
821 3) Added option to dump "customized" (overridden) tables (-c).
822 4) Fixed a problem where some table filenames were improperly
824 5) Improved some error messages, removed some unnecessary messages.
826 iASL: Implemented additional support for disassembly of ACPI tables that
827 contain invocations of external control methods. The -fe<file> option
828 allows the import of a file that specifies the external methods along
829 with the required number of arguments for each -- allowing for the
830 correct disassembly of the table. This is a workaround for a limitation
831 of AML code where the disassembler often cannot determine the number of
832 arguments required for an external control method and generates incorrect
833 ASL code. See the iASL reference for details. ACPICA BZ 1030.
835 Debugger: Implemented a new command (paths) that displays the full
836 pathnames (namepaths) and object types of all objects in the namespace.
837 This is an alternative to the namespace command.
839 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
840 mechanism and any installed handlers.
842 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
843 This can occur if there are too many parent prefixes in a namepath (for
844 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
846 Application OSLs: Set the return value for the PCI read functions. These
847 functions simply return AE_OK, but should set the return value to zero
848 also. This change implements this. ACPICA BZ 1038.
850 Debugger: Prevent possible command line buffer overflow. Increase the
851 size of a couple of the debugger line buffers, and ensure that overflow
852 cannot happen. ACPICA BZ 1037.
854 iASL: Changed to abort immediately on serious errors during the parsing
855 phase. Due to the nature of ASL, there is no point in attempting to
856 compile these types of errors, and they typically end up causing a
857 cascade of hundreds of errors which obscure the original problem.
859 ----------------------------------------
860 25 July 2013. Summary of changes for version 20130725:
862 1) ACPICA kernel-resident subsystem:
864 Fixed a problem with the DerefOf operator where references to FieldUnits
865 and BufferFields incorrectly returned the parent object, not the actual
866 value of the object. After this change, a dereference of a FieldUnit
867 reference results in a read operation on the field to get the value, and
868 likewise, the appropriate BufferField value is extracted from the target
871 Fixed a problem where the _WAK method could cause a fault under these
872 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
873 method returned no value. The problem is rarely seen because most kernels
874 run ACPICA in slack mode.
876 For the DerefOf operator, a fatal error now results if an attempt is made
877 to dereference a reference (created by the Index operator) to a NULL
878 package element. Provides compatibility with other ACPI implementations,
879 and this behavior will be added to a future version of the ACPI
882 The ACPI Power Management Timer (defined in the FADT) is now optional.
883 This provides compatibility with other ACPI implementations and will
884 appear in the next version of the ACPI specification. If there is no PM
885 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
886 zero in the FADT indicates no PM timer.
888 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
889 allows the host to globally enable/disable all vendor strings, all
890 feature strings, or both. Intended to be primarily used for debugging
891 purposes only. Lv Zheng.
893 Expose the collected _OSI data to the host via a global variable. This
894 data tracks the highest level vendor ID that has been invoked by the BIOS
895 so that the host (and potentially ACPICA itself) can change behaviors
896 based upon the age of the BIOS.
898 Example Code and Data Size: These are the sizes for the OS-independent
899 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
900 debug version of the code includes the debug output trace mechanism and
901 has a much larger code and data size.
904 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
905 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
907 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
908 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
911 2) iASL Compiler/Disassembler and Tools:
913 iASL: Created the following enhancements for the -so option (create
915 1)Add offsets for the last nameseg in each namepath for every supported
917 2)Add support for Processor, Device, Thermal Zone, and Scope objects
918 3)Add the actual AML opcode for the parent object of every supported
920 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
922 Disassembler: Emit all unresolved external symbols in a single block.
923 These are external references to control methods that could not be
924 resolved, and thus, the disassembler had to make a guess at the number of
927 iASL: The argument to the -T option (create table template) is now
928 optional. If not specified, the default table is a DSDT, typically the
931 ----------------------------------------
932 26 June 2013. Summary of changes for version 20130626:
934 1) ACPICA kernel-resident subsystem:
936 Fixed an issue with runtime repair of the _CST object. Null or invalid
937 elements were not always removed properly. Lv Zheng.
939 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
940 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
941 the maximum number of GPEs is 1016. Use of multiple GPE block devices
942 makes the system-wide number of GPEs essentially unlimited.
944 Example Code and Data Size: These are the sizes for the OS-independent
945 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
946 debug version of the code includes the debug output trace mechanism and
947 has a much larger code and data size.
950 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
951 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
953 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
954 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
957 2) iASL Compiler/Disassembler and Tools:
959 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
960 hosts. Now supports Linux, FreeBSD, and Windows.
962 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
963 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
965 iASL/Preprocessor: Implemented full support for nested
966 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
968 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
969 max. The original purpose of this constraint was to limit the amount of
970 debug output. However, the string function in question (UtPrintString) is
971 now used for the disassembler also, where 256 bytes is insufficient.
972 Reported by RehabMan@GitHub.
974 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
975 tables. ACPICA BZ 999. Lv Zheng.
977 iASL: Fixed a couple of error exit issues that could result in a "Could
978 not delete <file>" message during ASL compilation.
980 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
981 the actual signatures for these tables are "FACP" and "APIC",
984 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
985 tables are allowed to have multiple instances.
987 ----------------------------------------
988 17 May 2013. Summary of changes for version 20130517:
990 1) ACPICA kernel-resident subsystem:
992 Fixed a regression introduced in version 20130328 for _INI methods. This
993 change fixes a problem introduced in 20130328 where _INI methods are no
994 longer executed properly because of a memory block that was not
995 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
996 <tomasz.nowicki@linaro.org>.
998 Fixed a possible problem with the new extended sleep registers in the
1000 5.0 FADT. Do not use these registers (even if populated) unless the HW-
1001 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
1004 Implemented return value repair code for _CST predefined objects: Sort
1006 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
1008 Implemented a debug-only option to disable loading of SSDTs from the
1009 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
1010 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
1011 acglobal.h - ACPICA BZ 1005. Lv Zheng.
1013 Fixed some issues in the ACPICA initialization and termination code:
1014 Tomasz Nowicki <tomasz.nowicki@linaro.org>
1015 1) Clear events initialized flag upon event component termination. ACPICA
1017 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
1018 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
1019 4) Clear debug buffer global on termination to prevent possible multiple
1020 delete. ACPICA BZ 1010.
1022 Standardized all switch() blocks across the entire source base. After
1024 years, different formatting for switch() had crept in. This change makes
1025 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
1027 Split some files to enhance ACPICA modularity and configurability:
1028 1) Split buffer dump routines into utilities/utbuffer.c
1029 2) Split internal error message routines into utilities/uterror.c
1030 3) Split table print utilities into tables/tbprint.c
1031 4) Split iASL command-line option processing into asloptions.c
1033 Makefile enhancements:
1034 1) Support for all new files above.
1035 2) Abort make on errors from any subcomponent. Chao Guan.
1036 3) Add build support for Apple Mac OS X. Liang Qi.
1038 Example Code and Data Size: These are the sizes for the OS-independent
1039 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1040 debug version of the code includes the debug output trace mechanism and
1041 has a much larger code and data size.
1044 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1045 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1047 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1048 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1051 2) iASL Compiler/Disassembler and Tools:
1053 New utility: Implemented an easily portable version of the acpidump
1054 utility to extract ACPI tables from the system (or a file) in an ASCII
1056 dump format. The top-level code implements the various command line
1057 options, file I/O, and table dump routines. To port to a new host, only
1058 three functions need to be implemented to get tables -- since this
1059 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
1060 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
1061 1) The Windows version obtains the ACPI tables from the Registry.
1062 2) The Linux version is under development.
1063 3) Other hosts - If an OS-dependent module is submitted, it will be
1064 distributed with ACPICA.
1066 iASL: Fixed a regression for -D preprocessor option (define symbol). A
1067 restructuring/change to the initialization sequence caused this option to
1068 no longer work properly.
1070 iASL: Implemented a mechanism to disable specific warnings and remarks.
1071 Adds a new command line option, "-vw <messageid> as well as "#pragma
1072 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
1074 iASL: Fix for too-strict package object validation. The package object
1075 validation for return values from the predefined names is a bit too
1076 strict, it does not allow names references within the package (which will
1077 be resolved at runtime.) These types of references cannot be validated at
1078 compile time. This change ignores named references within package objects
1079 for names that return or define static packages.
1081 Debugger: Fixed the 80-character command line limitation for the History
1082 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
1084 iASL: Added control method and package support for the -so option
1085 (generates AML offset table for BIOS support.)
1087 iASL: issue a remark if a non-serialized method creates named objects. If
1088 a thread blocks within the method for any reason, and another thread
1089 enters the method, the method will fail because an attempt will be made
1091 create the same (named) object twice. In this case, issue a remark that
1092 the method should be marked serialized. NOTE: may become a warning later.
1095 ----------------------------------------
1096 18 April 2013. Summary of changes for version 20130418:
1098 1) ACPICA kernel-resident subsystem:
1100 Fixed a possible buffer overrun during some rare but specific field unit
1101 read operations. This overrun can only happen if the DSDT version is 1 --
1102 meaning that all AML integers are 32 bits -- and the field length is
1103 between 33 and 55 bits long. During the read, an internal buffer object
1105 created for the field unit because the field is larger than an integer
1107 bits). However, in this case, the buffer will be incorrectly written
1108 beyond the end because the buffer length is less than the internal
1110 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
1111 long, but a full 8 bytes will be written.
1113 Updated the Embedded Controller "orphan" _REG method support. This refers
1114 to _REG methods under the EC device that have no corresponding operation
1115 region. This is allowed by the ACPI specification. This update removes a
1116 dependency on the existence an ECDT table. It will execute an orphan _REG
1117 method as long as the operation region handler for the EC is installed at
1118 the EC device node and not the namespace root. Rui Zhang (original
1119 update), Bob Moore (update/integrate).
1121 Implemented run-time argument typechecking for all predefined ACPI names
1122 (_STA, _BIF, etc.) This change performs object typechecking on all
1123 incoming arguments for all predefined names executed via
1124 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
1125 passing correct object types as well as the correct number of arguments
1126 (therefore identifying any issues immediately). Also, the ASL/namespace
1127 definition of the predefined name is checked against the ACPI
1128 specification for the proper argument count. Adds one new file,
1131 Changed an exception code for the ASL UnLoad() operator. Changed the
1132 exception code for the case where the input DdbHandle is invalid, from
1133 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
1135 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
1136 global makefile. The use of this flag causes compiler errors on earlier
1137 versions of GCC, so it has been removed for compatibility.
1139 Miscellaneous cleanup:
1140 1) Removed some unused/obsolete macros
1141 2) Fixed a possible memory leak in the _OSI support
1142 3) Removed an unused variable in the predefined name support
1143 4) Windows OSL: remove obsolete reference to a memory list field
1145 Example Code and Data Size: These are the sizes for the OS-independent
1146 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1147 debug version of the code includes the debug output trace mechanism and
1148 has a much larger code and data size.
1151 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1152 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1154 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1155 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1158 2) iASL Compiler/Disassembler and Tools:
1160 AcpiExec: Added installation of a handler for the SystemCMOS address
1161 space. This prevents control method abort if a method accesses this
1164 AcpiExec: Added support for multiple EC devices, and now install EC
1165 operation region handler(s) at the actual EC device instead of the
1166 namespace root. This reflects the typical behavior of host operating
1169 AcpiExec: Updated to ensure that all operation region handlers are
1170 installed before the _REG methods are executed. This prevents a _REG
1171 method from aborting if it accesses an address space has no handler.
1172 AcpiExec installs a handler for every possible address space.
1174 Debugger: Enhanced the "handlers" command to display non-root handlers.
1175 This change enhances the handlers command to display handlers associated
1176 with individual devices throughout the namespace, in addition to the
1177 currently supported display of handlers associated with the root
1181 ASL Test Suite: Several test suite errors have been identified and
1182 resolved, reducing the total error count during execution. Chao Guan.
1184 ----------------------------------------
1185 28 March 2013. Summary of changes for version 20130328:
1187 1) ACPICA kernel-resident subsystem:
1189 Fixed several possible race conditions with the internal object reference
1190 counting mechanism. Some of the external ACPICA interfaces update object
1191 reference counts without holding the interpreter or namespace lock. This
1192 change adds a spinlock to protect reference count updates on the internal
1193 ACPICA objects. Reported by and with assistance from Andriy Gapon
1196 FADT support: Removed an extraneous warning for very large GPE register
1197 sets. This change removes a size mismatch warning if the legacy length
1198 field for a GPE register set is larger than the 64-bit GAS structure can
1199 accommodate. GPE register sets can be larger than the 255-bit width
1200 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1202 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1203 return from this interface. Handles a possible timeout case if
1204 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1205 "forever". Jung-uk Kim.
1207 Predefined name support: Add allowed/required argument type information
1209 the master predefined info table. This change adds the infrastructure to
1210 enable typechecking on incoming arguments for all predefined
1211 methods/objects. It does not actually contain the code that will fully
1212 utilize this information, this is still under development. Also condenses
1213 some duplicate code for the predefined names into a new module,
1214 utilities/utpredef.c
1216 Example Code and Data Size: These are the sizes for the OS-independent
1217 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1218 debug version of the code includes the debug output trace mechanism and
1219 has a much larger code and data size.
1222 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1223 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
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
1229 2) iASL Compiler/Disassembler and Tools:
1231 iASL: Implemented a new option to simplify the development of ACPI-
1233 BIOS code. Adds support for a new "offset table" output file. The -so
1234 option will create a C table containing the AML table offsets of various
1235 named objects in the namespace so that BIOS code can modify them easily
1237 boot time. This can simplify BIOS runtime code by eliminating expensive
1238 searches for "magic values", enhancing boot times and adding greater
1239 reliability. With assistance from Lee Hamel.
1241 iASL: Allow additional predefined names to return zero-length packages.
1242 Now, all predefined names that are defined by the ACPI specification to
1243 return a "variable-length package of packages" are allowed to return a
1244 zero length top-level package. This allows the BIOS to tell the host that
1245 the requested feature is not supported, and supports existing BIOS/ASL
1248 iASL: Changed the "result not used" warning to an error. This is the case
1249 where an ASL operator is effectively a NOOP because the result of the
1250 operation is not stored anywhere. For example:
1252 There is no target (missing 3rd argument), nor is the function return
1253 value used. This is potentially a very serious problem -- since the code
1254 was probably intended to do something, but for whatever reason, the value
1255 was not stored. Therefore, this issue has been upgraded from a warning to
1258 AcpiHelp: Added allowable/required argument types to the predefined names
1259 info display. This feature utilizes the recent update to the predefined
1260 names table (above).
1262 ----------------------------------------
1263 14 February 2013. Summary of changes for version 20130214:
1265 1) ACPICA Kernel-resident Subsystem:
1267 Fixed a possible regression on some hosts: Reinstated the safe return
1268 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1269 evaluated only once. Although these macros are not needed for the ACPICA
1270 code itself, they are often used by ACPI-related host device drivers
1272 the safe feature may be necessary.
1274 Fixed several issues related to the ACPI 5.0 reduced hardware support
1275 (SOC): Now ensure that if the platform declares itself as hardware-
1277 via the FADT, the following functions become NOOPs (and always return
1278 AE_OK) because ACPI is always enabled by definition on these machines:
1284 Dynamic Object Repair: Implemented additional runtime repairs for
1285 predefined name return values. Both of these repairs can simplify code in
1286 the related device drivers that invoke these methods:
1287 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1288 string to a Unicode buffer.
1289 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1291 lone end tag descriptor in the following cases: A Return(0) was executed,
1292 a null buffer was returned, or no object at all was returned (non-slack
1293 mode only). Adds a new file, nsconvert.c
1294 ACPICA BZ 998. Bob Moore, Lv Zheng.
1296 Resource Manager: Added additional code to prevent possible infinite
1298 while traversing corrupted or ill-formed resource template buffers. Check
1299 for zero-length resource descriptors in all code that loops through
1300 resource templates (the length field is used to index through the
1301 template). This change also hardens the external AcpiWalkResources and
1302 AcpiWalkResourceBuffer interfaces.
1304 Local Cache Manager: Enhanced the main data structure to eliminate an
1305 unnecessary mechanism to access the next object in the list. Actually
1306 provides a small performance enhancement for hosts that use the local
1307 ACPICA cache manager. Jung-uk Kim.
1309 Example Code and Data Size: These are the sizes for the OS-independent
1310 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1311 debug version of the code includes the debug output trace mechanism and
1312 has a much larger code and data size.
1315 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1316 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1318 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1319 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1322 2) iASL Compiler/Disassembler and Tools:
1324 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1325 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1326 that were made to the ACPI 5.0 specification.
1328 iASL/Disassembler: Added full support for the following new ACPI tables:
1329 1) The MTMR table (MID Timer Table)
1330 2) The VRTC table (Virtual Real Time Clock Table).
1331 Includes header file, disassembler, table compiler, and template support
1334 iASL: Implemented compile-time validation of package objects returned by
1335 predefined names. This new feature validates static package objects
1336 returned by the various predefined names defined to return packages. Both
1337 object types and package lengths are validated, for both parent packages
1338 and sub-packages, if any. The code is similar in structure and behavior
1340 the runtime repair mechanism within the AML interpreter and uses the
1341 existing predefined name information table. Adds a new file, aslprepkg.c.
1344 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1345 This feature detects a binary file with a valid ACPI table header and
1346 invokes the disassembler automatically. Eliminates the need to
1347 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1349 iASL/Disassembler: Added several warnings for the case where there are
1350 unresolved control methods during the disassembly. This can potentially
1351 cause errors when the output file is compiled, because the disassembler
1352 assumes zero method arguments in these cases (it cannot determine the
1353 actual number of arguments without resolution/definition of the method).
1355 Debugger: Added support to display all resources with a single command.
1356 Invocation of the resources command with no arguments will now display
1358 resources within the current namespace.
1360 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1363 ----------------------------------------
1364 17 January 2013. Summary of changes for version 20130117:
1366 1) ACPICA Kernel-resident Subsystem:
1368 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1369 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1370 objects to return a package containing one integer, most BIOS code
1372 two integers and the previous code reflects that. However, we also need
1374 support BIOS code that actually implements to the ACPI spec, and this
1375 change reflects this.
1377 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1378 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1379 C compilers that require this support.
1380 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1381 ACPI_DEBUG is already used by many of the various hosts.
1383 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1384 copyright to all module headers and signons, including the standard Linux
1385 header. This affects virtually every file in the ACPICA core subsystem,
1386 iASL compiler, all ACPICA utilities, and the test suites.
1388 Example Code and Data Size: These are the sizes for the OS-independent
1389 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1390 debug version of the code includes the debug output trace mechanism and
1391 has a much larger code and data size.
1394 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1395 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1397 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1398 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1401 2) iASL Compiler/Disassembler and Tools:
1403 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1404 prevent a possible fault on some hosts. Some C libraries modify the arg
1405 pointer parameter to vfprintf making it difficult to call it twice in the
1406 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1407 does not affect the Windows OSL since the Win C library does not modify
1408 the arg pointer. Chao Guan, Bob Moore.
1410 iASL: Fixed a possible infinite loop when the maximum error count is
1411 reached. If an output file other than the .AML file is specified (such as
1412 a listing file), and the maximum number of errors is reached, do not
1413 attempt to flush data to the output file(s) as the compiler is aborting.
1414 This can cause an infinite loop as the max error count code essentially
1415 keeps calling itself.
1417 iASL/Disassembler: Added an option (-in) to ignore NOOP
1419 Implemented for both the compiler and the disassembler. Often, the NOOP
1420 opcode is used as padding for packages that are changed dynamically by
1422 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1423 errors. This option causes the disassembler to ignore all NOOP opcodes
1424 (0xA3), and it also causes the compiler to ignore all ASL source code
1428 Debugger: Enhanced the Sleep command to execute all sleep states. This
1429 change allows Sleep to be invoked with no arguments and causes the
1430 debugger to execute all of the sleep states, 0-5, automatically.
1432 ----------------------------------------
1433 20 December 2012. Summary of changes for version 20121220:
1435 1) ACPICA Kernel-resident Subsystem:
1437 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1438 alternate entry point for AcpiWalkResources and improves the usability of
1439 the resource manager by accepting as input a buffer containing the output
1440 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1441 input buffer is not deleted by this interface so that it can be used by
1442 the host later. See the ACPICA reference for details.
1444 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1445 (DSDT version < 2). The constant will be truncated and this warning
1446 reflects that behavior.
1448 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1449 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1450 both get and set the new wake bit in these descriptors, separately from
1451 the existing share bit. Reported by Aaron Lu.
1453 Interpreter: Fix Store() when an implicit conversion is not possible. For
1454 example, in the cases such as a store of a string to an existing package
1455 object, implement the store as a CopyObject(). This is a small departure
1456 from the ACPI specification which states that the control method should
1458 aborted in this case. However, the ASLTS suite depends on this behavior.
1460 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1461 macros: check if debug output is currently enabled as soon as possible to
1462 minimize performance impact if debug is in fact not enabled.
1464 Source code restructuring: Cleanup to improve modularity. The following
1465 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1466 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1467 Associated makefiles and project files have been updated.
1469 Changed an exception code for LoadTable operator. For the case where one
1470 of the input strings is too long, change the returned exception code from
1471 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1473 Fixed a possible memory leak in dispatcher error path. On error, delete
1474 the mutex object created during method mutex creation. Reported by
1475 tim.gardner@canonical.com.
1477 Example Code and Data Size: These are the sizes for the OS-independent
1478 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1479 debug version of the code includes the debug output trace mechanism and
1480 has a much larger code and data size.
1483 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1484 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1486 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1487 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1490 2) iASL Compiler/Disassembler and Tools:
1492 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1493 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1494 will not allow the interpreter to differentiate between a method and a
1495 method invocation when these are used as an argument to the ObjectType
1496 operator. The ACPI specification change is to disallow a method
1498 (UserTerm) for the ObjectType operator.
1500 Finish support for the TPM2 and CSRT tables in the headers, table
1501 compiler, and disassembler.
1503 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1504 always expires immediately if the semaphore is not available. The
1506 code was using a relative-time timeout, but sem_timedwait requires the
1508 of an absolute time.
1510 iASL: Added a remark if the Timer() operator is used within a 32-bit
1511 table. This operator returns a 64-bit time value that will be truncated
1512 within a 32-bit table.
1514 iASL Source code restructuring: Cleanup to improve modularity. The
1515 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1516 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1520 ----------------------------------------
1521 14 November 2012. Summary of changes for version 20121114:
1523 1) ACPICA Kernel-resident Subsystem:
1525 Implemented a performance enhancement for ACPI/AML Package objects. This
1526 change greatly increases the performance of Package objects within the
1527 interpreter. It changes the processing of reference counts for packages
1529 optimizing for the most common case where the package sub-objects are
1530 either Integers, Strings, or Buffers. Increases the overall performance
1532 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1534 Chao Guan. ACPICA BZ 943.
1536 Implemented and deployed common macros to extract flag bits from resource
1537 descriptors. Improves readability and maintainability of the code. Fixes
1539 problem with the UART serial bus descriptor for the number of data bits
1540 flags (was incorrectly 2 bits, should be 3).
1542 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1543 of the macros and changed the SETx macros to the style of (destination,
1544 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1546 Example Code and Data Size: These are the sizes for the OS-independent
1547 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1548 debug version of the code includes the debug output trace mechanism and
1549 has a much larger code and data size.
1552 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1553 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1555 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1556 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1559 2) iASL Compiler/Disassembler and Tools:
1561 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1562 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1563 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1565 Disassembler: Fixed a problem with external declaration generation. Fixes
1566 a problem where an incorrect pathname could be generated for an external
1567 declaration if the original reference to the object includes leading
1568 carats (^). ACPICA BZ 984.
1570 Debugger: Completed a major update for the Disassemble<method> command.
1571 This command was out-of-date and did not properly disassemble control
1572 methods that had any reasonable complexity. This fix brings the command
1574 to the same level as the rest of the disassembler. Adds one new file,
1575 dmdeferred.c, which is existing code that is now common with the main
1576 disassembler and the debugger disassemble command. ACPICA MZ 978.
1578 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1579 Newer versions of Bison emit this prototype, so moved the prototype out
1581 the iASL header to where it is actually used in order to avoid a
1585 iASL/Tools: Standardized use of the stream I/O functions:
1586 1) Ensure check for I/O error after every fopen/fread/fwrite
1587 2) Ensure proper order of size/count arguments for fread/fwrite
1588 3) Use test of (Actual != Requested) after all fwrite, and most fread
1589 4) Standardize I/O error messages
1590 Improves reliability and maintainability of the code. Bob Moore, Lv
1594 Disassembler: Prevent duplicate External() statements. During generation
1595 of external statements, detect similar pathnames that are actually
1596 duplicates such as these:
1599 Remove all leading '\' characters from pathnames during the external
1600 statement generation so that duplicates will be detected and tossed.
1603 Tools: Replace low-level I/O with stream I/O functions. Replace
1604 open/read/write/close with the stream I/O equivalents
1605 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1608 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1609 name header so that AcpiXtract recognizes the output file/table.
1611 iASL: Remove obsolete -2 option flag. Originally intended to force the
1612 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1613 and the entire concept is now obsolete.
1615 ----------------------------------------
1616 18 October 2012. Summary of changes for version 20121018:
1619 1) ACPICA Kernel-resident Subsystem:
1621 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1622 introduced by late changes to the table as it was added to the ACPI 5.0
1623 specification. Includes header, disassembler, and data table compiler
1624 support as well as a new version of the MPST template.
1626 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1627 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1628 methods: _HID, _CID, and _UID.
1630 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1631 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1632 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1633 names for their various drivers. Affects the AcpiGetObjectInfo external
1634 interface, and other internal interfaces as well.
1636 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1637 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
1638 on machines that support non-aligned transfers. Optimizes for this case
1639 rather than using a strncpy. With assistance from Zheng Lv.
1641 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
1642 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
1644 Added a new debug print message for AML mutex objects that are force-
1645 released. At control method termination, any currently acquired mutex
1646 objects are force-released. Adds a new debug-only message for each one
1649 Audited/updated all ACPICA return macros and the function debug depth
1650 counter: 1) Ensure that all functions that use the various TRACE macros
1651 also use the appropriate ACPICA return macros. 2) Ensure that all normal
1652 return statements surround the return expression (value) with parens to
1653 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
1654 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
1656 Global source code changes/maintenance: All extra lines at the start and
1657 end of each source file have been removed for consistency. Also, within
1658 comments, all new sentences start with a single space instead of a double
1659 space, again for consistency across the code base.
1661 Example Code and Data Size: These are the sizes for the OS-independent
1662 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1663 debug version of the code includes the debug output trace mechanism and
1664 has a much larger code and data size.
1667 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1668 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1670 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1671 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1674 2) iASL Compiler/Disassembler and Tools:
1676 AcpiExec: Improved the algorithm used for memory leak/corruption
1677 detection. Added some intelligence to the code that maintains the global
1678 list of allocated memory. The list is now ordered by allocated memory
1679 address, significantly improving performance. When running AcpiExec on
1680 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
1681 on the platform and/or the environment. Note, this performance
1682 enhancement affects the AcpiExec utility only, not the kernel-resident
1685 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
1686 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
1687 incorrect table offset reported for invalid opcodes. Report the original
1688 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
1690 Disassembler: Enhanced the -vt option to emit the binary table data in
1691 hex format to assist with debugging.
1693 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
1694 size of file structure. Colin Ian King.
1696 ----------------------------------------
1697 13 September 2012. Summary of changes for version 20120913:
1700 1) ACPICA Kernel-resident Subsystem:
1702 ACPI 5.0: Added two new notify types for the Hardware Error Notification
1703 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
1707 Table Manager: Merged/removed duplicate code in the root table resize
1708 functions. One function is external, the other is internal. Lv Zheng,
1712 Makefiles: Completely removed the obsolete "Linux" makefiles under
1713 acpica/generate/linux. These makefiles are obsolete and have been
1716 the generic unix makefiles under acpica/generate/unix.
1718 Makefiles: Ensure that binary files always copied properly. Minor rule
1720 to ensure that the final binary output files are always copied up to the
1721 appropriate binary directory (bin32 or bin64.)
1723 Example Code and Data Size: These are the sizes for the OS-independent
1724 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1726 version of the code includes the debug output trace mechanism and has a
1728 larger code and data size.
1731 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1732 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1734 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1735 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1738 2) iASL Compiler/Disassembler and Tools:
1740 Disassembler: Fixed a possible fault during the disassembly of resource
1741 descriptors when a second parse is required because of the invocation of
1742 external control methods within the table. With assistance from
1743 adq@lidskialf.net. ACPICA BZ 976.
1745 iASL: Fixed a namepath optimization problem. An error can occur if the
1747 node that contains the namepath to be optimized does not have a parent
1749 that is a named object. This change fixes the problem.
1751 iASL: Fixed a regression where the AML file is not deleted on errors. The
1753 output file should be deleted if there are any errors during the
1756 only exception is if the -f (force output) option is used. ACPICA BZ 974.
1758 iASL: Added a feature to automatically increase internal line buffer
1760 Via realloc(), automatically increase the internal line buffer sizes as
1761 necessary to support very long source code lines. The current version of
1763 preprocessor requires a buffer long enough to contain full source code
1765 This change increases the line buffer(s) if the input lines go beyond the
1766 current buffer size. This eliminates errors that occurred when a source
1768 line was longer than the buffer.
1770 iASL: Fixed a problem with constant folding in method declarations. The
1771 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
1773 Type3 opcode was used.
1775 Debugger: Improved command help support. For incorrect argument count,
1777 full help for the command. For help command itself, allow an argument to
1780 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
1781 errors during execution of the suite. Guan Chao.
1783 ----------------------------------------
1784 16 August 2012. Summary of changes for version 20120816:
1787 1) ACPICA Kernel-resident Subsystem:
1789 Removed all use of the deprecated _GTS and _BFS predefined methods. The
1791 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
1792 deprecated and will probably be removed from the ACPI specification.
1794 does not invoke them, and reportedly never will. The final nail in the
1796 is that the ACPI specification states that these methods must be run with
1797 interrupts off, which is not going to happen in a kernel interpreter.
1799 Linux has removed all use of the methods also. It was discovered that
1800 invoking these functions caused failures on some machines, probably
1802 they were never tested since Windows does not call them. Affects two
1804 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
1807 Implemented support for complex bit-packed buffers returned from the _PLD
1808 (Physical Location of Device) predefined method. Adds a new external
1809 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
1811 structure. Note: C Bitfields cannot be used for this type of predefined
1812 structure since the memory layout of individual bitfields is not defined
1814 the C language. In addition, there are endian concerns where a compiler
1816 change the bitfield ordering based on the machine type. The new ACPICA
1817 interface eliminates these issues, and should be called after _PLD is
1818 executed. ACPICA BZ 954.
1820 Implemented a change to allow a scope change to root (via "Scope (\)")
1822 execution of module-level ASL code (code that is executed at table load
1825 Added the Windows8/Server2012 string for the _OSI method. This change
1828 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
1831 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
1833 and CSRT (Core System Resource Table).
1835 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
1836 names. This simplifies access to the buffers returned by these predefined
1837 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
1839 GPE support: Removed an extraneous parameter from the various low-level
1840 internal GPE functions. Tang Feng.
1842 Removed the linux makefiles from the unix packages. The generate/linux
1843 makefiles are obsolete and have been removed from the unix tarball
1845 packages. The replacement makefiles are under generate/unix, and there is
1847 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
1849 Updates for Unix makefiles:
1850 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
1851 2) Update linker flags (move to end of command line) for AcpiExec
1855 Split ACPICA initialization functions to new file, utxfinit.c. Split from
1856 utxface.c to improve modularity and reduce file size.
1858 Example Code and Data Size: These are the sizes for the OS-independent
1859 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1860 debug version of the code includes the debug output trace mechanism and
1862 much larger code and data size.
1865 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1866 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1868 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1869 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1872 2) iASL Compiler/Disassembler and Tools:
1874 iASL: Fixed a problem with constant folding for fixed-length constant
1875 expressions. The constant-folding code was not being invoked for constant
1876 expressions that allow the use of type 3/4/5 opcodes to generate
1878 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
1880 in the generation of invalid AML bytecode. ACPICA BZ 970.
1882 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
1883 apparently automatically emit some of the necessary externals. This
1885 handles these versions in order to eliminate generation warnings.
1887 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
1889 Disassembler: Add support to decode _PLD buffers. The decoded buffer
1891 within comments in the output file.
1893 Debugger: Fixed a regression with the "Threads" command where
1894 AE_BAD_PARAMETER was always returned.
1896 ----------------------------------------
1897 11 July 2012. Summary of changes for version 20120711:
1899 1) ACPICA Kernel-resident Subsystem:
1901 Fixed a possible fault in the return package object repair code. Fixes a
1902 problem that can occur when a lone package object is wrapped with an
1904 package object in order to force conformance to the ACPI specification.
1906 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
1910 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
1911 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
1912 ARB_DIS bit must be implemented in the host-dependent C3 processor power
1914 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
1916 Intel and other vendors. (for Intel: ICH4-M and earlier)
1918 This change removes the code to disable/enable bus master arbitration
1920 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
1922 resume problems on some machines. The change has been in use for over
1926 Implemented two new external interfaces to support host-directed dynamic
1928 table load and unload. They are intended to simplify the host
1930 of hot-plug support:
1931 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
1932 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
1934 See the ACPICA reference for additional details. Adds one new file,
1935 components/tables/tbxfload.c
1937 Implemented and deployed two new interfaces for errors and warnings that
1939 known to be caused by BIOS/firmware issues:
1940 AcpiBiosError: Prints "ACPI Firmware Error" message.
1941 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
1942 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
1944 and FADT errors. Additional deployment to be completed as appropriate in
1946 future. The associated conditional macros are ACPI_BIOS_ERROR and
1947 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
1952 Implicit notify support: ensure that no memory allocation occurs within a
1953 critical region. This fix moves a memory allocation outside of the time
1955 spinlock is held. Fixes issues on systems that do not allow this
1959 Split exception code utilities and tables into a new file,
1962 Example Code and Data Size: These are the sizes for the OS-independent
1963 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1965 version of the code includes the debug output trace mechanism and has a
1967 larger code and data size.
1970 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1971 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1973 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1974 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1977 2) iASL Compiler/Disassembler and Tools:
1979 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
1983 Debugger: Enhanced the "tables" command to emit additional information
1985 the current set of ACPI tables, including the owner ID and flags decode.
1987 Debugger: Reimplemented the "unload" command to use the new
1988 AcpiUnloadParentTable external interface. This command was disable
1990 due to need for an unload interface.
1992 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
1994 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
1996 ----------------------------------------
1997 20 June 2012. Summary of changes for version 20120620:
2000 1) ACPICA Kernel-resident Subsystem:
2002 Implemented support to expand the "implicit notify" feature to allow
2004 devices to be notified by a single GPE. This feature automatically
2006 runtime device notification in the absence of a BIOS-provided GPE control
2007 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
2009 provided by ACPICA for Windows compatibility, and is a workaround for
2012 code errors. See the description of the AcpiSetupGpeForWake interface in
2014 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
2016 Changed some comments and internal function names to simplify and ensure
2017 correctness of the Linux code translation. No functional changes.
2019 Example Code and Data Size: These are the sizes for the OS-independent
2020 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2022 version of the code includes the debug output trace mechanism and has a
2024 larger code and data size.
2027 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2028 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2030 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2031 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2034 2) iASL Compiler/Disassembler and Tools:
2036 Disassembler: Added support to emit short, commented descriptions for the
2038 predefined names in order to improve the readability of the disassembled
2039 output. ACPICA BZ 959. Changes include:
2040 1) Emit descriptions for all standard predefined names (_INI, _STA,
2043 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
2044 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
2047 AcpiSrc: Fixed several long-standing Linux code translation issues.
2049 descriptions in function headers are now translated properly to lower
2052 underscores. ACPICA BZ 961. Also fixes translation problems such as
2058 local_fADT -> local_FADT
2059 execute_oSI -> execute_OSI
2061 iASL: Fixed a problem where null bytes were inadvertently emitted into
2065 iASL: Added the existing debug options to the standard help screen. There
2067 no longer two different help screens. ACPICA BZ 957.
2069 AcpiHelp: Fixed some typos in the various predefined name descriptions.
2071 expand some of the descriptions where appropriate.
2073 iASL: Fixed the -ot option (display compile times/statistics). Was not
2075 properly for standard output; only worked for the debug file case.
2077 ----------------------------------------
2078 18 May 2012. Summary of changes for version 20120518:
2081 1) ACPICA Core Subsystem:
2083 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
2085 to block until asynchronous events such as notifies and GPEs have
2087 Within ACPICA, it is only called before a notify or GPE handler is
2088 removed/uninstalled. It also may be useful for the host OS within related
2089 drivers such as the Embedded Controller driver. See the ACPICA reference
2091 additional information. ACPICA BZ 868.
2093 ACPI Tables: Added a new error message for a possible overflow failure
2095 the conversion of FADT 32-bit legacy register addresses to internal
2098 bit GAS structure representation. The GAS has a one-byte "bit length"
2100 thus limiting the register length to 255 bits. ACPICA BZ 953.
2102 Example Code and Data Size: These are the sizes for the OS-independent
2103 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2105 version of the code includes the debug output trace mechanism and has a
2107 larger code and data size.
2110 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2111 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2113 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2114 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2117 2) iASL Compiler/Disassembler and Tools:
2119 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
2121 This keyword was added late in the ACPI 5.0 release cycle and was not
2122 implemented until now.
2124 Disassembler: Added support for Operation Region externals. Adds missing
2125 support for operation regions that are defined in another table, and
2126 referenced locally via a Field or BankField ASL operator. Now generates
2128 correct External statement.
2130 Disassembler: Several additional fixes for the External() statement
2132 related to some ASL operators. Also, order the External() statements
2133 alphabetically in the disassembler output. Fixes the External()
2136 the Create* field, Alias, and Scope operators:
2137 1) Create* buffer field operators - fix type mismatch warning on
2139 2) Alias - implement missing External support
2140 3) Scope - fix to make sure all necessary externals are emitted.
2142 iASL: Improved pathname support. For include files, merge the prefix
2144 with the file pathname and eliminate unnecessary components. Convert
2145 backslashes in all pathnames to forward slashes, for readability. Include
2147 pathname changes affect both #include and Include() type operators.
2149 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
2151 of a valid line by inserting a newline and then returning the EOF during
2153 next call to GetNextLine. Prevents the line from being ignored due to EOF
2156 iASL: Implemented some changes to enhance the IDE support (-vi option.)
2158 and Warning messages are now correctly recognized for both the source
2160 browser and the global error and warning counts.
2162 ----------------------------------------
2163 20 April 2012. Summary of changes for version 20120420:
2166 1) ACPICA Core Subsystem:
2168 Implemented support for multiple notify handlers. This change adds
2171 allow multiple system and device notify handlers on Device, Thermal Zone,
2173 Processor objects. This can simplify the host OS notification
2175 Also re-worked and restructured the entire notify support code to
2177 handler installation, handler removal, notify event queuing, and notify
2178 dispatch to handler(s). Note: there can still only be two global notify
2179 handlers - one for system notifies and one for device notifies. There are
2181 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2182 Moore, Rafael Wysocki.
2184 Fixed a regression in the package repair code where the object reference
2185 count was calculated incorrectly. Regression was introduced in the commit
2186 "Support to add Package wrappers".
2188 Fixed a couple possible memory leaks in the AML parser, in the error
2190 path. Jesper Juhl, Lin Ming.
2192 Example Code and Data Size: These are the sizes for the OS-independent
2193 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2194 debug version of the code includes the debug output trace mechanism and
2196 much larger code and data size.
2199 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2200 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2202 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2203 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2206 2) iASL Compiler/Disassembler and Tools:
2208 iASL: Fixed a problem with the resource descriptor support where the
2210 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2211 included in cumulative descriptor offset, resulting in incorrect values
2213 resource tags within resource descriptors appearing after a
2215 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2217 iASL and Preprocessor: Implemented full support for the #line directive
2219 correctly track original source file line numbers through the .i
2221 output file - for error and warning messages.
2223 iASL: Expand the allowable byte constants for address space IDs.
2225 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2226 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2228 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2230 iASL: Add option to completely disable the preprocessor (-Pn).
2232 iASL: Now emit all error/warning messages to standard error (stderr) by
2233 default (instead of the previous stdout).
2235 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2237 for resource descriptor offset fix above. Update/cleanup error output
2238 routines. Enable and send iASL errors/warnings to an error logfile
2239 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2241 several extraneous "unrecognized operator" messages.
2243 ----------------------------------------
2244 20 March 2012. Summary of changes for version 20120320:
2247 1) ACPICA Core Subsystem:
2249 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2250 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2252 does not execute these methods, and therefore these methods are often
2253 untested. It has been seen on some systems where the execution of these
2254 methods causes errors and also prevents the machine from entering S5. It
2256 therefore suggested that host operating systems do not execute these
2258 by default. In the future, perhaps these methods can be optionally
2260 based on the age of the system and/or what is the newest version of
2262 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2264 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2267 Fixed a problem where the length of the local/common FADT was set too
2269 The local FADT table length cannot be set to the common length until the
2270 original length has been examined. There is code that checks the table
2272 and sets various fields appropriately. This can affect older machines
2274 early FADT versions. For example, this can cause inadvertent writes to
2276 CST_CNT register. Julian Anastasov.
2278 Fixed a mapping issue related to a physical table override. Use the
2280 mapping mechanism for tables loaded via the physical override OSL
2282 This allows for early mapping before the virtual memory manager is
2284 Thomas Renninger, Bob Moore.
2286 Enhanced the automatic return-object repair code: Repair a common problem
2288 predefined methods that are defined to return a variable-length Package
2290 sub-objects. If there is only one sub-object, some BIOS ASL code
2292 simply returns the single object instead of a Package with one sub-
2294 This new support will repair this error by wrapping a Package object
2296 the original object, creating the correct and expected Package with one
2298 object. Names that can be repaired in this manner include: _ALR, _CSD,
2300 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2303 Changed the exception code returned for invalid ACPI paths passed as
2304 parameters to external interfaces such as AcpiEvaluateObject. Was
2305 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2307 Example Code and Data Size: These are the sizes for the OS-independent
2308 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2310 version of the code includes the debug output trace mechanism and has a
2312 larger code and data size.
2315 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2316 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2318 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2319 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2322 2) iASL Compiler/Disassembler and Tools:
2324 iASL: Added the infrastructure and initial implementation of a integrated
2326 like preprocessor. This will simplify BIOS development process by
2328 the need for a separate preprocessing step during builds. On Windows, it
2330 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2331 features including full #define() macro support are still under
2333 These preprocessor directives are supported:
2346 In addition, these new command line options are supported:
2347 -D <symbol> Define symbol for preprocessor use
2348 -li Create preprocessed output file (*.i)
2349 -P Preprocess only and create preprocessor output file (*.i)
2351 Table Compiler: Fixed a problem where the equals operator within an
2353 did not work properly.
2355 Updated iASL to use the current versions of Bison/Flex. Updated the
2357 project file to invoke these tools from the standard location. ACPICA BZ
2360 Flex for Windows: V2.5.4
2361 Bison for Windows: V2.4.1
2363 ----------------------------------------
2364 15 February 2012. Summary of changes for version 20120215:
2367 1) ACPICA Core Subsystem:
2369 There have been some major changes to the sleep/wake support code, as
2370 described below (a - e).
2372 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2373 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2374 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2376 time the _BFS method is called and the _WAK method is called. NOTE: all
2378 must update their wake/resume code or else sleep/wake will not work
2382 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2384 method. Some machines require that the GPEs are enabled before the _WAK
2386 is executed. Thomas Renninger.
2388 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2390 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2392 determine whether the system is rebooting or resuming. Matthew Garrett.
2394 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2396 match the ACPI specification requirement. Rafael Wysocki.
2398 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2399 registers within the V5 FADT. This support adds two new files:
2400 hardware/hwesleep.c implements the support for the new registers. Moved
2402 sleep/wake external interfaces to hardware/hwxfsleep.c.
2405 Added a new OSL interface for ACPI table overrides,
2406 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2407 table via a physical address, instead of the logical address required by
2408 AcpiOsTableOverride. This simplifies the host implementation. Initial
2409 implementation by Thomas Renninger. The ACPICA implementation creates a
2411 shared function for table overrides that attempts both a logical and a
2414 Expanded the OSL memory read/write interfaces to 64-bit data
2415 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2416 transfer support for GAS register structures passed to AcpiRead and
2419 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2421 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2423 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2425 10% of the code and 5% of the static data, and the following hardware
2427 features become unavailable:
2428 PM Event and Control registers
2429 SCI interrupt (and handler)
2431 General Purpose Events (GPEs)
2434 FACS table (Waking vectors and Global Lock)
2436 Updated the unix tarball directory structure to match the ACPICA git
2438 tree. This ensures that the generic unix makefiles work properly (in
2439 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2442 Updated the return value of the _REV predefined method to integer value 5
2444 reflect ACPI 5.0 support.
2446 Moved the external ACPI PM timer interface prototypes to the public
2448 file where they belong.
2450 Example Code and Data Size: These are the sizes for the OS-independent
2451 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2453 version of the code includes the debug output trace mechanism and has a
2455 larger code and data size.
2458 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2459 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2461 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2462 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2465 2) iASL Compiler/Disassembler and Tools:
2467 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2468 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2469 incorrectly displayed.
2471 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2474 ----------------------------------------
2475 11 January 2012. Summary of changes for version 20120111:
2478 1) ACPICA Core Subsystem:
2480 Implemented a new mechanism to allow host device drivers to check for
2482 range conflicts with ACPI Operation Regions. Both SystemMemory and
2484 address spaces are supported. A new external interface,
2485 AcpiCheckAddressRange,
2486 allows drivers to check an address range against the ACPI namespace. See
2488 ACPICA reference for additional details. Adds one new file,
2489 utilities/utaddress.c. Lin Ming, Bob Moore.
2491 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2494 Status registers, update the ACPI 5.0 flags, and update internal data
2495 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2499 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2501 all module headers and signons, including the standard Linux header. This
2502 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2504 all ACPICA utilities.
2506 Example Code and Data Size: These are the sizes for the OS-independent
2507 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2509 version of the code includes the debug output trace mechanism and has a
2511 larger code and data size.
2514 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2515 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2517 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2518 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2521 2) iASL Compiler/Disassembler and Tools:
2523 Disassembler: fixed a problem with the automatic resource tag generation
2524 support. Fixes a problem where the resource tags are inadvertently not
2525 constructed if the table being disassembled contains external references
2527 control methods. Moved the actual construction of the tags to after the
2529 namespace is constructed (after 2nd parse is invoked due to external
2531 method references.) ACPICA BZ 941.
2533 Table Compiler: Make all "generic" operators caseless. These are the
2535 like UINT8, String, etc. Making these caseless improves ease-of-use.
2539 ----------------------------------------
2540 23 November 2011. Summary of changes for version 20111123:
2542 0) ACPI 5.0 Support:
2544 This release contains full support for the ACPI 5.0 specification, as
2547 Reduced Hardware Support:
2548 -------------------------
2550 This support allows for ACPI systems without the usual ACPI hardware.
2552 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2554 not attempt to initialize or use any of the usual ACPI hardware. Note,
2556 this flag is set, all of the following ACPI hardware is assumed to be not
2557 present and is not initialized or accessed:
2559 General Purpose Events (GPEs)
2560 Fixed Events (PM1a/PM1b and PM Control)
2561 Power Management Timer and Console Buttons (power/sleep)
2562 Real-time Clock Alarm
2564 System Control Interrupt (SCI)
2565 The FACS is assumed to be non-existent
2570 All new tables and updates to existing tables are fully supported in the
2571 ACPICA headers (for use by device drivers), the disassembler, and the
2573 Data Table Compiler. ACPI 5.0 defines these new tables:
2575 BGRT /* Boot Graphics Resource Table */
2576 DRTM /* Dynamic Root of Trust for Measurement table */
2577 FPDT /* Firmware Performance Data Table */
2578 GTDT /* Generic Timer Description Table */
2579 MPST /* Memory Power State Table */
2580 PCCT /* Platform Communications Channel Table */
2581 PMTT /* Platform Memory Topology Table */
2582 RASF /* RAS Feature table */
2584 Operation Regions/SpaceIDs:
2585 ---------------------------
2587 All new operation regions are fully supported by the iASL compiler, the
2588 disassembler, and the ACPICA runtime code (for dispatch to region
2590 The new operation region Space IDs are:
2595 Resource Descriptors:
2596 ---------------------
2598 All new ASL resource descriptors are fully supported by the iASL
2601 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2603 all new predefined resource tags). New descriptors are:
2612 ASL/AML Operators, New and Modified:
2613 ------------------------------------
2615 One new operator is added, the Connection operator, which is used to
2617 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2619 field objects within an operation region. Several new protocols are
2621 with the AccessAs operator. All are fully supported by the iASL compiler,
2622 disassembler, and runtime ACPICA AML interpreter:
2624 Connection // Declare Field Connection
2626 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2627 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2629 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2630 RawDataBuffer // Data type for Vendor Data
2633 Predefined ASL/AML Objects:
2634 ---------------------------
2636 All new predefined objects/control-methods are supported by the iASL
2638 and the ACPICA runtime validation/repair (arguments and return values.)
2640 predefined names include the following:
2642 Standard Predefined Names (Objects or Control Methods):
2643 _AEI, _CLS, _CPC, _CWS, _DEP,
2644 _DLM, _EVT, _GCP, _CRT, _GWS,
2645 _HRV, _PRE, _PSE, _SRT, _SUB.
2647 Resource Tags (Names used to access individual fields within resource
2649 _DBT, _DPL, _DRS, _END, _FLC,
2650 _IOR, _LIN, _MOD, _PAR, _PHA,
2651 _PIN, _PPI, _POL, _RXL, _SLV,
2652 _SPE, _STB, _TXL, _VEN.
2654 ACPICA External Interfaces:
2655 ---------------------------
2657 Several new interfaces have been defined for use by ACPI-related device
2658 drivers and other host OS services:
2660 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
2662 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
2663 provided by the BIOS. They are intended to be used in conjunction with
2665 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
2666 mutual exclusion with the AML code/interpreter.
2668 AcpiGetEventResources: Returns the (formatted) resource descriptors as
2670 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
2672 resource descriptors associated with hardware-reduced platform events,
2674 to the AcpiGetCurrentResources interface.
2676 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
2677 operation regions, information about the Connection() object and any
2679 length information is passed to the region handler within the Context
2682 AcpiBufferToResource: This interface converts a raw AML buffer containing
2684 resource template or resource descriptor to the ACPI_RESOURCE internal
2686 suitable for use by device drivers. Can be used by an operation region
2688 to convert the Connection() buffer object into a ACPI_RESOURCE.
2690 Miscellaneous/Tools/TestSuites:
2691 -------------------------------
2693 Support for extended _HID names (Four alpha characters instead of three).
2694 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
2695 Support for ACPI 5.0 features in the ASLTS test suite.
2696 Fully updated documentation (ACPICA and iASL reference documents.)
2698 ACPI Table Definition Language:
2699 -------------------------------
2701 Support for this language was implemented and released as a subsystem of
2703 iASL compiler in 2010. (See the iASL compiler User Guide.)
2706 Non-ACPI 5.0 changes for this release:
2707 --------------------------------------
2709 1) ACPICA Core Subsystem:
2711 Fix a problem with operation region declarations where a failure can
2714 the region name and an argument that evaluates to an object (such as the
2715 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
2718 Do not abort an ACPI table load if an invalid space ID is found within.
2720 will be caught later if the offending method is executed. ACPICA BZ 925.
2722 Fixed an issue with the FFixedHW space ID where the ID was not always
2723 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
2725 Fixed a problem with the 32-bit generation of the unix-specific OSL
2726 (osunixxf.c). Lin Ming, ACPICA BZ 936.
2728 Several changes made to enable generation with the GCC 4.6 compiler.
2732 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
2734 field registers out-of-range.
2736 2) iASL Compiler/Disassembler and Tools:
2738 iASL: Implemented the __PATH__ operator, which returns the full pathname
2740 the current source file.
2742 AcpiHelp: Automatically display expanded keyword information for all ASL
2745 Debugger: Add "Template" command to disassemble/dump resource template
2748 Added a new master script to generate and execute the ASLTS test suite.
2749 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
2751 iASL: Fix problem with listing generation during processing of the
2753 operator where AML listing was disabled until the entire Switch block was
2756 iASL: Improve support for semicolon statement terminators. Fix "invalid
2757 character" message for some cases when the semicolon is used. Semicolons
2759 now allowed after every <Term> grammar element. ACPICA BZ 927.
2761 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
2764 Disassembler: Fix problem with disassembly of the DataTableRegion
2766 where an inadvertent "Unhandled deferred opcode" message could be
2769 3) Example Code and Data Size
2771 These are the sizes for the OS-independent acpica.lib produced by the
2772 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2773 includes the debug output trace mechanism and has a much larger code and
2778 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2779 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2781 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2782 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2784 ----------------------------------------
2785 22 September 2011. Summary of changes for version 20110922:
2789 Support for ACPI 5.0 in ACPICA has been underway for several months and
2791 be released at the same time that ACPI 5.0 is officially released.
2793 The ACPI 5.0 specification is on track for release in the next few
2796 1) ACPICA Core Subsystem:
2798 Fixed a problem where the maximum sleep time for the Sleep() operator was
2799 intended to be limited to two seconds, but was inadvertently limited to
2803 Linux and Unix makefiles: Added header file dependencies to ensure
2805 generation of ACPICA core code and utilities. Also simplified the
2807 considerably through the use of the vpath variable to specify search
2811 2) iASL Compiler/Disassembler and Tools:
2813 iASL: Implemented support to check the access length for all fields
2815 access named Resource Descriptor fields. For example, if a resource field
2817 defined to be two bits, a warning is issued if a CreateXxxxField() is
2819 with an incorrect bit length. This is implemented for all current
2821 descriptor names. ACPICA BZ 930.
2823 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
2827 iASL: Fixed a couple of issues associated with variable-length package
2828 objects. 1) properly handle constants like One, Ones, Zero -- do not make
2830 VAR_PACKAGE when these are used as a package length. 2) Allow the
2832 opcode (in addition to PACKAGE) when validating object types for
2836 iASL: Emit statistics for all output files (instead of just the ASL input
2838 AML output). Includes listings, hex files, etc.
2840 iASL: Added -G option to the table compiler to allow the compilation of
2842 ACPI tables. The only part of a table that is required is the standard
2847 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
2849 which also adds correct 64-bit support. Also, now all output filenames
2851 completely lower case.
2853 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
2854 loading table files. A warning is issued for any such tables. The only
2855 exception is an FADT. This also fixes a possible fault when attempting to
2857 non-AML tables. ACPICA BZ 932.
2859 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
2861 missing table terminator could cause a fault when using the -p option.
2863 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
2866 3) Example Code and Data Size
2868 These are the sizes for the OS-independent acpica.lib produced by the
2869 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2870 includes the debug output trace mechanism and has a much larger code and
2874 Previous Release (VC 9.0):
2875 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2876 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2877 Current Release (VC 9.0):
2878 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2879 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2882 ----------------------------------------
2883 23 June 2011. Summary of changes for version 20110623:
2885 1) ACPI CA Core Subsystem:
2887 Updated the predefined name repair mechanism to not attempt repair of a
2889 return object if a _PSS object is present. We can only sort the _TSS
2891 package if there is no _PSS within the same scope. This is because if
2894 present, the ACPI specification dictates that the _TSS Power Dissipation
2896 is to be ignored, and therefore some BIOSs leave garbage values in the
2898 Power field(s). In this case, it is best to just return the _TSS package
2900 is. Reported by, and fixed with assistance from Fenghua Yu.
2902 Added an option to globally disable the control method return value
2904 and repair. This runtime option can be used to disable return value
2907 this is causing a problem on a particular machine. Also added an option
2909 AcpiExec (-dr) to set this disable flag.
2911 All makefiles and project files: Major changes to improve generation of
2913 tools. ACPICA BZ 912:
2914 Reduce default optimization levels to improve compatibility
2915 For Linux, add strict-aliasing=0 for gcc 4
2916 Cleanup and simplify use of command line defines
2917 Cleanup multithread library support
2918 Improve usage messages
2920 Linux-specific header: update handling of THREAD_ID and pthread. For the
2922 bit case, improve casting to eliminate possible warnings, especially with
2926 Example Code and Data Size: These are the sizes for the OS-independent
2927 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2929 version of the code includes the debug output trace mechanism and has a
2931 larger code and data size.
2933 Previous Release (VC 9.0):
2934 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2935 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2936 Current Release (VC 9.0):
2937 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2938 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2940 2) iASL Compiler/Disassembler and Tools:
2942 With this release, a new utility named "acpihelp" has been added to the
2944 package. This utility summarizes the ACPI specification chapters for the
2946 and AML languages. It generates under Linux/Unix as well as Windows, and
2947 provides the following functionality:
2948 Find/display ASL operator(s) -- with description and syntax.
2949 Find/display ASL keyword(s) -- with exact spelling and descriptions.
2950 Find/display ACPI predefined name(s) -- with description, number
2951 of arguments, and the return value data type.
2952 Find/display AML opcode name(s) -- with opcode, arguments, and
2954 Decode/display AML opcode -- with opcode name, arguments, and
2957 Service Layers: Make multi-thread support configurable. Conditionally
2959 the multi-thread support so that threading libraries will not be linked
2962 necessary. The only tool that requires multi-thread support is AcpiExec.
2964 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
2966 Bison appear to want the interface to yyerror to be a const char * (or at
2967 least this is a problem when generating iASL on some systems.) ACPICA BZ
2971 Tools: Fix for systems where O_BINARY is not defined. Only used for
2973 versions of the tools.
2975 ----------------------------------------
2976 27 May 2011. Summary of changes for version 20110527:
2978 1) ACPI CA Core Subsystem:
2980 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
2982 signature. Now, only allow SSDT, OEMx, and a null signature. History:
2983 1) Originally, we checked the table signature for "SSDT" or "PSDT".
2984 (PSDT is now obsolete.)
2985 2) We added support for OEMx tables, signature "OEM" plus a fourth
2986 "don't care" character.
2987 3) Valid tables were encountered with a null signature, so we just
2988 gave up on validating the signature, (05/2008).
2989 4) We encountered non-AML tables such as the MADT, which caused
2990 interpreter errors and kernel faults. So now, we once again allow
2991 only SSDT, OEMx, and now, also a null signature. (05/2011).
2993 Added the missing _TDL predefined name to the global name list in order
2995 enable validation. Affects both the core ACPICA code and the iASL
2998 Example Code and Data Size: These are the sizes for the OS-independent
2999 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3001 version of the code includes the debug output trace mechanism and has a
3003 larger code and data size.
3005 Previous Release (VC 9.0):
3006 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3007 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3008 Current Release (VC 9.0):
3009 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3010 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3012 2) iASL Compiler/Disassembler and Tools:
3014 Debugger/AcpiExec: Implemented support for "complex" method arguments on
3016 debugger command line. This adds support beyond simple integers --
3018 Strings, Buffers, and Packages. Includes support for nested packages.
3019 Increased the default command line buffer size to accommodate these
3021 See the ACPICA reference for details and syntax. ACPICA BZ 917.
3023 Debugger/AcpiExec: Implemented support for "default" method arguments for
3025 Execute/Debug command. Now, the debugger will always invoke a control
3027 with the required number of arguments -- even if the command line
3029 none or insufficient arguments. It uses default integer values for any
3031 arguments. Also fixes a bug where only six method arguments maximum were
3032 supported instead of the required seven.
3034 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
3036 also return status in order to prevent buffer overruns. See the ACPICA
3037 reference for details and syntax. ACPICA BZ 921
3039 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
3040 makefiles to simplify support for the two different but similar parser
3041 generators, bison and yacc.
3043 Updated the generic unix makefile for gcc 4. The default gcc version is
3045 expected to be 4 or greater, since options specific to gcc 4 are used.
3047 ----------------------------------------
3048 13 April 2011. Summary of changes for version 20110413:
3050 1) ACPI CA Core Subsystem:
3052 Implemented support to execute a so-called "orphan" _REG method under the
3054 device. This change will force the execution of a _REG method underneath
3057 device even if there is no corresponding operation region of type
3058 EmbeddedControl. Fixes a problem seen on some machines and apparently is
3059 compatible with Windows behavior. ACPICA BZ 875.
3061 Added more predefined methods that are eligible for automatic NULL
3063 element removal. This change adds another group of predefined names to
3066 of names that can be repaired by having NULL package elements dynamically
3067 removed. This group are those methods that return a single variable-
3069 package containing simple data types such as integers, buffers, strings.
3071 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
3074 and _TZD. ACPICA BZ 914.
3076 Split and segregated all internal global lock functions to a new file,
3079 Updated internal address SpaceID for DataTable regions. Moved this
3082 id in preparation for ACPI 5.0 changes that will include some new space
3085 change should not affect user/host code.
3087 Example Code and Data Size: These are the sizes for the OS-independent
3089 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3091 the code includes the debug output trace mechanism and has a much larger
3096 Previous Release (VC 9.0):
3097 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3098 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3099 Current Release (VC 9.0):
3100 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3101 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3103 2) iASL Compiler/Disassembler and Tools:
3105 iASL/DTC: Major update for new grammar features. Allow generic data types
3107 custom ACPI tables. Field names are now optional. Any line can be split
3109 multiple lines using the continuation char (\). Large buffers now use
3111 continuation character(s) and no colon on the continuation lines. See the
3113 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
3116 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
3118 Since the parser stuffs a "zero" as the return value for these statements
3121 the underlying AML grammar), they were seen as "return with value" by the
3123 semantic checking. They are now seen correctly as "null" return
3126 iASL: Check if a_REG declaration has a corresponding Operation Region.
3128 check for each _REG to ensure that there is in fact a corresponding
3130 region declaration in the same scope. If not, the _REG method is not very
3132 since it probably won't be executed. ACPICA BZ 915.
3134 iASL/DTC: Finish support for expression evaluation. Added a new
3137 that implements c-style operator precedence and parenthesization. ACPICA
3141 Disassembler/DTC: Remove support for () and <> style comments in data
3144 that DTC has full expression support, we don't want to have comment
3147 start with a parentheses or a less-than symbol. Now, only the standard /*
3150 comments are supported, as well as the bracket [] comments.
3152 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
3154 headers in the acpidump file. Update the header validation to support
3156 tables. Problem introduced in previous AcpiXtract version in the change
3158 support "wrong checksum" error messages emitted by acpidump utility.
3160 iASL: Add a * option to generate all template files (as a synonym for
3164 "iasl -T *" or "iasl -T ALL".
3166 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
3168 abort the compiler on "fatal" errors, simply should abort the current
3170 This allows multiple compiles with a single (possibly wildcard) compiler
3173 ----------------------------------------
3174 16 March 2011. Summary of changes for version 20110316:
3176 1) ACPI CA Core Subsystem:
3178 Fixed a problem caused by a _PRW method appearing at the namespace root
3180 during the setup of wake GPEs. A fault could occur if a _PRW directly
3183 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3185 Implemented support for "spurious" Global Lock interrupts. On some
3187 global lock interrupt can occur without the pending flag being set. Upon
3190 interrupt, we now ensure that a thread is actually waiting for the lock
3192 signaling GL availability. Rafael Wysocki, Bob Moore.
3194 Example Code and Data Size: These are the sizes for the OS-independent
3196 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3198 the code includes the debug output trace mechanism and has a much larger
3203 Previous Release (VC 9.0):
3204 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3205 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3206 Current Release (VC 9.0):
3207 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3208 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3210 2) iASL Compiler/Disassembler and Tools:
3212 Implemented full support for the "SLIC" ACPI table. Includes support in
3214 header files, disassembler, table compiler, and template generator. Bob
3218 AcpiXtract: Correctly handle embedded comments and messages from
3220 Apparently some or all versions of acpidump will occasionally emit a
3223 "Wrong checksum", etc., into the dump file. This was causing problems for
3224 AcpiXtract. ACPICA BZ 905.
3226 iASL: Fix the Linux makefile by removing an inadvertent double file
3230 AcpiExec: Update installation of operation region handlers. Install one
3232 for a user-defined address space. This is used by the ASL test suite
3235 ----------------------------------------
3236 11 February 2011. Summary of changes for version 20110211:
3238 1) ACPI CA Core Subsystem:
3240 Added a mechanism to defer _REG methods for some early-installed
3242 Most user handlers should be installed before call to
3243 AcpiEnableSubsystem.
3244 However, Event handlers and region handlers should be installed after
3245 AcpiInitializeObjects. Override handlers for the "default" regions should
3247 installed early, however. This change executes all _REG methods for the
3248 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3249 chicken/egg issues between them. ACPICA BZ 848.
3251 Implemented an optimization for GPE detection. This optimization will
3253 ignore GPE registers that contain no enabled GPEs -- there is no need to
3254 read the register since this information is available internally. This
3255 becomes more important on machines with a large GPE space. ACPICA
3257 884. Lin Ming. Suggestion from Joe Liu.
3259 Removed all use of the highly unreliable FADT revision field. The
3261 number in the FADT has been found to be completely unreliable and cannot
3263 trusted. Only the actual table length can be used to infer the version.
3265 change updates the ACPICA core and the disassembler so that both no
3267 even look at the FADT version and instead depend solely upon the FADT
3270 Fix an unresolved name issue for the no-debug and no-error-message source
3271 generation cases. The _AcpiModuleName was left undefined in these cases,
3273 it is actually needed as a parameter to some interfaces. Define
3274 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3276 Split several large files (makefiles and project files updated)
3277 utglobal.c -> utdecode.c
3278 dbcomds.c -> dbmethod.c dbnames.c
3279 dsopcode.c -> dsargs.c dscontrol.c
3280 dsload.c -> dsload2.c
3281 aslanalyze.c -> aslbtypes.c aslwalks.c
3283 Example Code and Data Size: These are the sizes for the OS-independent
3284 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3285 debug version of the code includes the debug output trace mechanism and
3287 a much larger code and data size.
3289 Previous Release (VC 9.0):
3290 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3291 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3292 Current Release (VC 9.0):
3293 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3294 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3296 2) iASL Compiler/Disassembler and Tools:
3298 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3299 These are useful C-style macros with the standard definitions. ACPICA
3302 iASL/DTC: Added support for integer expressions and labels. Support for
3304 expressions for all integer fields in all ACPI tables. Support for labels
3306 "generic" portions of tables such as UEFI. See the iASL reference manual.
3308 Debugger: Added a command to display the status of global handlers. The
3309 "handlers" command will display op region, fixed event, and miscellaneous
3310 global handlers. installation status -- and for op regions, whether
3312 or user-installed handler will be used.
3314 iASL: Warn if reserved method incorrectly returns a value. Many
3316 names are defined such that they do not return a value. If implemented as
3318 method, issue a warning if such a name explicitly returns a value. ACPICA
3321 iASL: Added detection of GPE method name conflicts. Detects a conflict
3323 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3325 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3327 iASL/DTC: Fixed a couple input scanner issues with comments and line
3328 numbers. Comment remover could get confused and miss a comment ending.
3330 a problem with line counter maintenance.
3332 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3334 no need to abort on simple errors within a field definition.
3336 Debugger: Simplified the output of the help command. All help output now
3338 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3340 ----------------------------------------
3341 12 January 2011. Summary of changes for version 20110112:
3343 1) ACPI CA Core Subsystem:
3345 Fixed a race condition between method execution and namespace walks that
3347 possibly cause a fault. The problem was apparently introduced in version
3348 20100528 as a result of a performance optimization that reduces the
3351 namespace walks upon method exit by using the delete_namespace_subtree
3352 function instead of the delete_namespace_by_owner function used
3354 Bug is a missing namespace lock in the delete_namespace_subtree function.
3355 dana.myers@oracle.com
3357 Fixed several issues and a possible fault with the automatic "serialized"
3358 method support. History: This support changes a method to "serialized" on
3360 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3361 possibility that it cannot handle reentrancy. This fix repairs a couple
3363 issues seen in the field, especially on machines with many cores:
3365 1) Delete method children only upon the exit of the last thread,
3366 so as to not delete objects out from under other running threads
3367 (and possibly causing a fault.)
3368 2) Set the "serialized" bit for the method only upon the exit of the
3369 Last thread, so as to not cause deadlock when running threads
3371 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3372 so that there is no longer any confusion between the two.
3374 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3376 Debugger: Now lock the namespace for duration of a namespace dump.
3378 issues if the namespace is changing dynamically underneath the debugger.
3379 Especially affects temporary namespace nodes, since the debugger displays
3382 Updated the ordering of include files. The ACPICA headers should appear
3383 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3385 any necessary compiler-specific defines, etc. Affects the ACPI-related
3389 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3391 to all module headers and signons, including the Linux header. This
3393 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3396 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3397 project files for VC++ 6.0 are now obsolete. New project files can be
3399 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3402 Example Code and Data Size: These are the sizes for the OS-independent
3403 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3404 debug version of the code includes the debug output trace mechanism and
3406 much larger code and data size.
3408 Previous Release (VC 6.0):
3409 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3410 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3411 Current Release (VC 9.0):
3412 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3413 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3415 2) iASL Compiler/Disassembler and Tools:
3417 iASL: Added generic data types to the Data Table compiler. Add "generic"
3419 types such as UINT32, String, Unicode, etc., to simplify the generation
3421 platform-defined tables such as UEFI. Lin Ming.
3423 iASL: Added listing support for the Data Table Compiler. Adds listing
3425 (-l) to display actual binary output for each line of input code.
3427 ----------------------------------------
3428 09 December 2010. Summary of changes for version 20101209:
3430 1) ACPI CA Core Subsystem:
3432 Completed the major overhaul of the GPE support code that was begun in
3434 2010. Major features include: removal of _PRW execution in ACPICA (host
3435 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3436 changes to existing interfaces, simplification of GPE handler operation,
3438 a handful of new interfaces:
3444 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3446 See the ACPICA Programmer Reference for full details and programming
3447 information. See the new section 4.4 "General Purpose Event (GPE)
3449 for a full overview, and section 8.7 "ACPI General Purpose Event
3451 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3453 Bob Moore, Rafael Wysocki.
3455 Implemented a new GPE feature for Windows compatibility, the "Implicit
3457 GPE Notify". This feature will automatically issue a Notify(2) on a
3459 when a Wake GPE is received if there is no corresponding GPE method or
3460 handler. ACPICA BZ 870.
3462 Fixed a problem with the Scope() operator during table parse and load
3464 During load phase (table load or method execution), the scope operator
3466 not enter the target into the namespace. Instead, it should open a new
3468 at the target location. Linux BZ 19462, ACPICA BZ 882.
3470 Example Code and Data Size: These are the sizes for the OS-independent
3471 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3472 debug version of the code includes the debug output trace mechanism and
3474 much larger code and data size.
3477 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3478 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3480 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3481 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3483 2) iASL Compiler/Disassembler and Tools:
3485 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3487 "bus-specific" per the ACPI specification, and therefore any characters
3489 acceptable. The only checks that can be performed are for a null string
3491 perhaps for a leading asterisk. ACPICA BZ 886.
3493 iASL: Fixed a problem where a syntax error that caused a premature EOF
3494 condition on the source file emitted a very confusing error message. The
3495 premature EOF is now detected correctly. ACPICA BZ 891.
3497 Disassembler: Decode the AccessSize within a Generic Address Structure
3499 access, word access, etc.) Note, this field does not allow arbitrary bit
3500 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3502 New: AcpiNames utility - Example namespace dump utility. Shows an example
3504 ACPICA configuration for a minimal namespace dump utility. Uses table and
3505 namespace managers, but no AML interpreter. Does not add any
3507 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3508 partition and configure ACPICA. ACPICA BZ 883.
3510 AML Debugger: Increased the debugger buffer size for method return
3512 Was 4K, increased to 16K. Also enhanced error messages for debugger
3514 execution, including the buffer overflow case.
3516 ----------------------------------------
3517 13 October 2010. Summary of changes for version 20101013:
3519 1) ACPI CA Core Subsystem:
3521 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3523 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3524 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3526 Changed the type of the predefined namespace object _TZ from ThermalZone
3528 Device. This was found to be confusing to the host software that
3530 the various thermal zones, since _TZ is not really a ThermalZone.
3533 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3536 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3537 string is "Windows 2006 SP2".
3539 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3541 code automatically repairs _HID-related strings, this type of code is no
3542 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3545 Example Code and Data Size: These are the sizes for the OS-independent
3546 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3547 debug version of the code includes the debug output trace mechanism and
3549 much larger code and data size.
3552 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3553 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3555 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3556 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3558 2) iASL Compiler/Disassembler and Tools:
3560 iASL: Implemented additional compile-time validation for _HID strings.
3562 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3565 the string must be exactly seven or eight characters. For both _HID and
3567 strings, all characters must be alphanumeric. ACPICA BZ 874.
3569 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3570 descriptors that are mostly or all zeros, with the expectation that they
3572 be filled in at runtime. iASL now allows this as long as there is a
3574 tag" (name) associated with the descriptor, which gives the ASL a handle
3575 needed to modify the descriptor. ACPICA BZ 873.
3577 Added single-thread support to the generic Unix application OSL.
3579 for iASL support, this change removes the use of semaphores in the
3581 threaded ACPICA tools/applications - increasing performance. The
3582 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3583 option. ACPICA BZ 879.
3585 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3587 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3589 iASL: Moved all compiler messages to a new file, aslmessages.h.
3591 ----------------------------------------
3592 15 September 2010. Summary of changes for version 20100915:
3594 1) ACPI CA Core Subsystem:
3596 Removed the AcpiOsDerivePciId OSL interface. The various host
3598 of this function were not OS-dependent and are now obsolete and can be
3599 removed from all host OSLs. This function has been replaced by
3600 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3601 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3602 module, hwpci.c. ACPICA BZ 857.
3604 Implemented a dynamic repair for _HID and _CID strings. The following
3605 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3606 string, and 2) the entire string is uppercased. Both repairs are in
3607 accordance with the ACPI specification and will simplify host driver
3611 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3612 always UINT64. This simplifies the ACPICA code, especially any printf
3614 UINT64 is the only common data type for all thread_id types across all
3615 operating systems. It is now up to the host OSL to cast the native
3617 type to UINT64 before returning the value to ACPICA (via
3619 Lin Ming, Bob Moore.
3621 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3623 keyword is not standard across compilers, and this type allows inline to
3625 configured on a per-compiler basis. Lin Ming.
3627 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3629 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3631 during suspend/restore operations. ACPICA BZ 869.
3633 All code that implements error/warning messages with the "ACPI:" prefix
3635 been moved to a new module, utxferror.c.
3637 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
3639 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
3641 Example Code and Data Size: These are the sizes for the OS-independent
3642 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3643 debug version of the code includes the debug output trace mechanism and
3645 much larger code and data size.
3648 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3649 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3651 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3652 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3654 2) iASL Compiler/Disassembler and Tools:
3656 iASL/Disassembler: Write ACPI errors to stderr instead of the output
3658 This keeps the output files free of random error messages that may
3660 from within the namespace/interpreter code. Used this opportunity to
3662 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
3663 866. Lin Ming, Bob Moore.
3665 Tools: update some printfs for ansi warnings on size_t. Handle width
3667 of size_t on 32-bit versus 64-bit generations. Lin Ming.
3669 ----------------------------------------
3670 06 August 2010. Summary of changes for version 20100806:
3672 1) ACPI CA Core Subsystem:
3674 Designed and implemented a new host interface to the _OSI support code.
3676 will allow the host to dynamically add or remove multiple _OSI strings,
3678 well as install an optional handler that is called for each _OSI
3680 Also added a new AML debugger command, 'osi' to display and modify the
3682 _OSI string table, and test support in the AcpiExec utility. See the
3684 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
3686 AcpiInstallInterface - Add an _OSI string.
3687 AcpiRemoveInterface - Delete an _OSI string.
3688 AcpiInstallInterfaceHandler - Install optional _OSI handler.
3690 AcpiOsValidateInterface - no longer used.
3692 source/components/utilities/utosi.c
3694 Re-introduced the support to enable multi-byte transfers for Embedded
3695 Controller (EC) operation regions. A reported problem was found to be a
3697 in the host OS, not in the multi-byte support. Previously, the maximum
3699 size passed to the EC operation region handler was a single byte. There
3701 often EC Fields larger than one byte that need to be transferred, and it
3703 useful for the EC driver to lock these as a single transaction. This
3705 enables single transfers larger than 8 bits. This effectively changes the
3706 access to the EC space from ByteAcc to AnyAcc, and will probably require
3707 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
3709 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
3711 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
3712 prototype in acpiosxf.h had the output value pointer as a (void *).
3713 It should be a (UINT64 *). This may affect some host OSL code.
3715 Fixed a couple problems with the recently modified Linux makefiles for
3717 and AcpiExec. These new makefiles place the generated object files in the
3718 local directory so that there can be no collisions between the files that
3720 shared between them that are compiled with different options.
3722 Example Code and Data Size: These are the sizes for the OS-independent
3723 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3724 debug version of the code includes the debug output trace mechanism and
3726 much larger code and data size.
3729 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3730 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3732 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3733 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3735 2) iASL Compiler/Disassembler and Tools:
3737 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
3739 namespace from and disassemble an entire group of AML files. Useful for
3740 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
3742 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
3744 iASL: Allow multiple invocations of -e option. This change allows
3746 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
3750 ----------------------------------------
3751 02 July 2010. Summary of changes for version 20100702:
3753 1) ACPI CA Core Subsystem:
3755 Implemented several updates to the recently added GPE reference count
3756 support. The model for "wake" GPEs is changing to give the host OS
3758 control of these GPEs. Eventually, the ACPICA core will not execute any
3760 methods, since the host already must execute them. Also, additional
3762 were made to help ensure that the reference counts are kept in proper
3763 synchronization with reality. Rafael J. Wysocki.
3765 1) Ensure that GPEs are not enabled twice during initialization.
3766 2) Ensure that GPE enable masks stay in sync with the reference count.
3767 3) Do not inadvertently enable GPEs when writing GPE registers.
3768 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
3769 interface. This interface will set or clear individual GPEs for wakeup.
3770 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
3772 are now used for "runtime" GPEs only.
3774 Changed the behavior of the GPE install/remove handler interfaces. The
3777 no longer disabled during this process, as it was found to cause problems
3779 some machines. Rafael J. Wysocki.
3781 Reverted a change introduced in version 20100528 to enable Embedded
3782 Controller multi-byte transfers. This change was found to cause problems
3784 Index Fields and possibly Bank Fields. It will be reintroduced when these
3785 problems have been resolved.
3787 Fixed a problem with references to Alias objects within Package Objects.
3789 reference to an Alias within the definition of a Package was not always
3790 resolved properly. Aliases to objects like Processors, Thermal zones,
3792 were resolved to the actual object instead of a reference to the object
3795 should be. Package objects are only allowed to contain integer, string,
3796 buffer, package, and reference objects. Redhat bugzilla 608648.
3798 Example Code and Data Size: These are the sizes for the OS-independent
3799 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3800 debug version of the code includes the debug output trace mechanism and
3802 much larger code and data size.
3805 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3806 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3808 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3809 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3811 2) iASL Compiler/Disassembler and Tools:
3813 iASL: Implemented a new compiler subsystem to allow definition and
3814 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
3816 are called "ACPI Data Tables", and the new compiler is the "Data Table
3817 Compiler". This compiler is intended to simplify the existing error-prone
3818 process of creating these tables for the BIOS, as well as allowing the
3819 disassembly, modification, recompilation, and override of existing ACPI
3821 tables. See the iASL User Guide for detailed information.
3823 iASL: Implemented a new Template Generator option in support of the new
3825 Table Compiler. This option will create examples of all known ACPI tables
3826 that can be used as the basis for table development. See the iASL
3827 documentation and the -T option.
3829 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
3832 Updated the Linux makefiles for iASL and AcpiExec to place the generated
3833 object files in the local directory so that there can be no collisions
3834 between the shared files between them that are generated with different
3837 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
3839 the #define __APPLE__ to enable this support.
3841 ----------------------------------------
3842 28 May 2010. Summary of changes for version 20100528:
3844 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
3845 available at www.acpi.info. This is primarily an errata release.
3847 1) ACPI CA Core Subsystem:
3849 Undefined ACPI tables: We are looking for the definitions for the
3851 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
3853 Implemented support to enable multi-byte transfers for Embedded
3855 (EC) operation regions. Previously, the maximum data size passed to the
3857 operation region handler was a single byte. There are often EC Fields
3859 than one byte that need to be transferred, and it is useful for the EC
3861 to lock these as a single transaction. This change enables single
3863 larger than 8 bits. This effectively changes the access to the EC space
3865 ByteAcc to AnyAcc, and will probably require changes to the host OS
3867 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
3869 transfers. Alexey Starikovskiy, Lin Ming
3871 Implemented a performance enhancement for namespace search and access.
3873 change enhances the performance of namespace searches and walks by adding
3875 backpointer to the parent in each namespace node. On large namespaces,
3877 change can improve overall ACPI performance by up to 9X. Adding a pointer
3879 each namespace node increases the overall size of the internal namespace
3881 about 5%, since each namespace entry usually consists of both a namespace
3882 node and an ACPI operand object. However, this is the first growth of the
3883 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
3885 Implemented a performance optimization that reduces the number of
3887 walks. On control method exit, only walk the namespace if the method is
3889 to have created namespace objects outside of its local scope. Previously,
3891 entire namespace was traversed on each control method exit. This change
3893 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
3896 Added support to truncate I/O addresses to 16 bits for Windows
3898 Some ASL code has been seen in the field that inadvertently has bits set
3899 above bit 15. This feature is optional and is enabled if the BIOS
3901 any Windows OSI strings. It can also be enabled by the host OS. Matthew
3904 Added support to limit the maximum time for the ASL Sleep() operator. To
3905 prevent accidental deep sleeps, limit the maximum time that Sleep() will
3906 actually sleep. Configurable, the default maximum is two seconds. ACPICA
3909 Added run-time validation support for the _WDG and_WED Microsoft
3911 methods. These objects are defined by "Windows Instrumentation", and are
3913 part of the ACPI spec. ACPICA BZ 860.
3915 Expanded all statistic counters used during namespace and device
3916 initialization from 16 to 32 bits in order to support very large
3919 Replaced all instances of %d in printf format specifiers with %u since
3921 all integers in ACPICA are unsigned.
3923 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
3927 Example Code and Data Size: These are the sizes for the OS-independent
3928 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3929 debug version of the code includes the debug output trace mechanism and
3931 much larger code and data size.
3934 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3935 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3937 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3938 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3940 2) iASL Compiler/Disassembler and Tools:
3942 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
3943 methods. These objects are defined by "Windows Instrumentation", and are
3945 part of the ACPI spec. ACPICA BZ 860.
3947 AcpiExec: added option to disable the memory tracking mechanism. The -dt
3948 option will disable the tracking mechanism, which improves performance
3951 AcpiExec: Restructured the command line options into -d (disable) and -e
3954 ----------------------------------------
3955 28 April 2010. Summary of changes for version 20100428:
3957 1) ACPI CA Core Subsystem:
3959 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
3960 including FADT-based and GPE Block Devices, execute any _PRW methods in
3962 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
3963 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
3964 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
3965 Devices. Provides compatibility with other ACPI implementations. Two new
3966 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
3969 Fixed a regression introduced in version 20100331 within the table
3971 where initial table loading could fail. This was introduced in the fix
3973 AcpiReallocateRootTable. Also, renamed some of fields in the table
3975 data structures to clarify their meaning and use.
3977 Fixed a possible allocation overrun during internal object copy in
3978 AcpiUtCopySimpleObject. The original code did not correctly handle the
3980 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
3983 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
3984 possible access beyond end-of-allocation. Also, now fully validate
3986 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
3988 Example Code and Data Size: These are the sizes for the OS-independent
3989 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3990 debug version of the code includes the debug output trace mechanism and
3992 much larger code and data size.
3995 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3996 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3998 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3999 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4001 2) iASL Compiler/Disassembler and Tools:
4003 iASL: Implemented Min/Max/Len/Gran validation for address resource
4004 descriptors. This change implements validation for the address fields
4006 are common to all address-type resource descriptors. These checks are
4007 implemented: Checks for valid Min/Max, length within the Min/Max window,
4008 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
4010 table 6-40 in the ACPI 4.0a specification. Also split the large
4012 and aslrestype2.c files into five new files. ACPICA BZ 840.
4014 iASL: Added support for the _Wxx predefined names. This support was
4016 and these names were not recognized by the compiler as valid predefined
4017 names. ACPICA BZ 851.
4019 iASL: Added an error for all predefined names that are defined to return
4021 value and thus must be implemented as Control Methods. These include all
4023 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
4024 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
4026 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
4028 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
4030 dynamically loaded via the Load() operator. Also cleaned up output for
4033 ta and -tc options. ACPICA BZ 853.
4035 Tests: Added a new file with examples of extended iASL error checking.
4036 Demonstrates the advanced error checking ability of the iASL compiler.
4037 Available at tests/misc/badcode.asl.
4039 ----------------------------------------
4040 31 March 2010. Summary of changes for version 20100331:
4042 1) ACPI CA Core Subsystem:
4044 Completed a major update for the GPE support in order to improve support
4046 shared GPEs and to simplify both host OS and ACPICA code. Added a
4048 count mechanism to support shared GPEs that require multiple device
4050 Several external interfaces have changed. One external interface has been
4051 removed. One new external interface was added. Most of the GPE external
4052 interfaces now use the GPE spinlock instead of the events mutex (and the
4053 Flags parameter for many GPE interfaces has been removed.) See the
4055 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
4057 Wysocki. ACPICA BZ 831.
4060 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
4066 Implemented write support for DataTable operation regions. These regions
4068 defined via the DataTableRegion() operator. Previously, only read support
4070 implemented. The ACPI specification allows DataTableRegions to be
4074 Implemented a new subsystem option to force a copy of the DSDT to local
4075 memory. Optionally copy the entire DSDT to local memory (instead of
4077 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
4079 the original DSDT, creating the need for this option. Default is FALSE,
4083 Implemented detection of a corrupted or replaced DSDT. This change adds
4084 support to detect a DSDT that has been corrupted and/or replaced from
4086 the OS (by firmware). This is typically catastrophic for the system, but
4088 been seen on some machines. Once this problem has been detected, the DSDT
4089 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
4091 Fixed two problems with AcpiReallocateRootTable during the root table
4093 When copying the root table to the new allocation, the length used was
4094 incorrect. The new size was used instead of the current table size,
4096 too much data was copied. Also, the count of available slots for ACPI
4098 was not set correctly. Alexey Starikovskiy, Bob Moore.
4100 Example Code and Data Size: These are the sizes for the OS-independent
4101 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4102 debug version of the code includes the debug output trace mechanism and
4104 much larger code and data size.
4107 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4108 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4110 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4111 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4113 2) iASL Compiler/Disassembler and Tools:
4115 iASL: Implement limited typechecking for values returned from predefined
4116 control methods. The type of any returned static (unnamed) object is now
4117 validated. For example, Return(1). ACPICA BZ 786.
4119 iASL: Fixed a predefined name object verification regression. Fixes a
4121 introduced in version 20100304. An error is incorrectly generated if a
4122 predefined name is declared as a static named object with a value defined
4123 using the keywords "Zero", "One", or "Ones". Lin Ming.
4125 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
4127 reducing the requested registry access rights. ACPICA BZ 842.
4129 Disassembler: fixed a possible fault when generating External()
4131 Introduced in commit ae7d6fd: Properly handle externals with parent-
4133 (carat). Fixes a string length allocation calculation. Lin Ming.
4135 ----------------------------------------
4136 04 March 2010. Summary of changes for version 20100304:
4138 1) ACPI CA Core Subsystem:
4140 Fixed a possible problem with the AML Mutex handling function
4141 AcpiExReleaseMutex where the function could fault under the very rare
4142 condition when the interpreter has blocked, the interpreter lock is
4144 the interpreter is then reentered via the same thread, and attempts to
4145 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
4149 Implemented additional configuration support for the AML "Debug Object".
4150 Output from the debug object can now be enabled via a global variable,
4151 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
4153 This debug output is now available in the release version of ACPICA
4155 of just the debug version. Also, the entire debug output module can now
4157 configured out of the ACPICA build if desired. One new file added,
4158 executer/exdebug.c. Lin Ming, Bob Moore.
4160 Added header support for the ACPI MCHI table (Management Controller Host
4161 Interface Table). This table was added in ACPI 4.0, but the defining
4163 has only recently become available.
4165 Standardized output of integer values for ACPICA warnings/errors. Always
4167 0x prefix for hex output, always use %u for unsigned integer decimal
4169 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
4171 invocations.) These invocations were converted from the original
4172 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
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: 87.1K Code, 18.0K Data, 105.1K Total
4182 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4184 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4185 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4187 2) iASL Compiler/Disassembler and Tools:
4189 iASL: Implemented typechecking support for static (non-control method)
4190 predefined named objects that are declared with the Name() operator. For
4191 example, the type of this object is now validated to be of type Integer:
4192 Name(_BBN, 1). This change migrates the compiler to using the core
4194 name table instead of maintaining a local version. Added a new file,
4195 aslpredef.c. ACPICA BZ 832.
4197 Disassembler: Added support for the ACPI 4.0 MCHI table.
4199 ----------------------------------------
4200 21 January 2010. Summary of changes for version 20100121:
4202 1) ACPI CA Core Subsystem:
4204 Added the 2010 copyright to all module headers and signons. This affects
4205 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4206 tools/utilities, and the test suites.
4208 Implemented a change to the AcpiGetDevices interface to eliminate
4210 invocations of the _STA method. In the case where a specific _HID is
4211 requested, do not run _STA until a _HID match is found. This eliminates
4212 potentially dozens of _STA calls during a search for a particular
4214 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4216 Implemented an additional repair for predefined method return values.
4218 to repair unexpected NULL elements within returned Package objects.
4221 Integer of value zero, a NULL String, or a zero-length Buffer as
4223 ACPICA BZ 818. Lin Ming, Bob Moore.
4225 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4227 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4229 64-bit AML integers). It is now obsolete and this change removes it from
4231 ACPICA code base, replaced by UINT64. The original typedef has been
4233 for now for compatibility with existing device driver code. ACPICA BZ
4236 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4238 the parse tree object.
4240 Added additional warning options for the gcc-4 generation. Updated the
4242 accordingly. This includes some code restructuring to eliminate
4244 code, elimination of some gotos, elimination of unused return values,
4246 additional casting, and removal of redundant declarations.
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: 87.0K Code, 18.0K Data, 105.0K Total
4256 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4258 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4259 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4261 2) iASL Compiler/Disassembler and Tools:
4263 No functional changes for this release.
4265 ----------------------------------------
4266 14 December 2009. Summary of changes for version 20091214:
4268 1) ACPI CA Core Subsystem:
4270 Enhanced automatic data type conversions for predefined name repairs.
4272 change expands the automatic repairs/conversions for predefined name
4274 values to make Integers, Strings, and Buffers fully interchangeable.
4277 Buffer can be converted to a Package of Integers if necessary. The
4279 module was completely restructured. Lin Ming, Bob Moore.
4281 Implemented automatic removal of null package elements during predefined
4283 repairs. This change will automatically remove embedded and trailing NULL
4284 package elements from returned package objects that are defined to
4287 variable number of sub-packages. The driver is then presented with a
4289 with no null elements to deal with. ACPICA BZ 819.
4291 Implemented a repair for the predefined _FDE and _GTM names. The expected
4292 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4294 possible problems (both seen in the field), where a package of integers
4296 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4299 Implemented additional module-level code support. This change will
4301 execute module-level code that is not at the root of the namespace (under
4303 Device object, etc.). Now executes the code within the current scope
4305 of the root. ACPICA BZ 762. Lin Ming.
4307 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4309 problem where mutex errors can occur when running a _REG method that is
4311 the same scope as a method-defined operation region or an operation
4313 under a module-level IF block. This type of code is rare, so the problem
4315 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4317 Fixed a possible memory leak during module-level code execution. An
4319 could be leaked for each block of executed module-level code if the
4320 interpreter slack mode is enabled This change deletes any implicitly
4322 object from the module-level code block. Lin Ming.
4324 Removed messages for successful predefined repair(s). The repair
4326 was considered too wordy. Now, messages are only unconditionally emitted
4328 the return object cannot be repaired. Existing messages for successful
4329 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4332 Example Code and Data Size: These are the sizes for the OS-independent
4333 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4334 debug version of the code includes the debug output trace mechanism and
4336 much larger code and data size.
4339 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4340 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4342 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4343 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4345 2) iASL Compiler/Disassembler and Tools:
4347 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4349 were no longer automatically removed at the termination of the compile.
4351 acpiexec: Implemented the -f option to specify default region fill value.
4352 This option specifies the value used to initialize buffers that simulate
4353 operation regions. Default value is zero. Useful for debugging problems
4355 depend on a specific initial value for a region or field.
4357 ----------------------------------------
4358 12 November 2009. Summary of changes for version 20091112:
4360 1) ACPI CA Core Subsystem:
4362 Implemented a post-order callback to AcpiWalkNamespace. The existing
4363 interface only has a pre-order callback. This change adds an additional
4364 parameter for a post-order callback which will be more useful for bus
4366 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4368 Modified the behavior of the operation region memory mapping cache for
4369 SystemMemory. Ensure that the memory mappings created for operation
4371 do not cross 4K page boundaries. Crossing a page boundary while mapping
4372 regions can cause kernel warnings on some hosts if the pages have
4374 attributes. Such regions are probably BIOS bugs, and this is the
4376 Linux BZ 14445. Lin Ming.
4378 Implemented an automatic repair for predefined methods that must return
4379 sorted lists. This change will repair (by sorting) packages returned by
4381 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4383 and do not contain NULL package elements. Adds one new file,
4384 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4386 Fixed a possible fault during predefined name validation if a return
4388 object contains NULL elements. Also adds a warning if a NULL element is
4389 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4391 include repair or removal of all such NULL elements where possible.
4393 Implemented additional module-level executable AML code support. This
4395 will execute module-level code that is not at the root of the namespace
4396 (under a Device object, etc.) at table load time. Module-level executable
4398 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4400 Implemented a new internal function to create Integer objects. This
4402 simplifies miscellaneous object creation code. ACPICA BZ 823.
4404 Reduced the severity of predefined repair messages, Warning to Info.
4406 the object was successfully repaired, a warning is too severe. Reduced to
4408 info message for now. These messages may eventually be changed to debug-
4412 Example Code and Data Size: These are the sizes for the OS-independent
4413 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4414 debug version of the code includes the debug output trace mechanism and
4416 much larger code and data size.
4419 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4420 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4422 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4423 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4425 2) iASL Compiler/Disassembler and Tools:
4427 iASL: Implemented Switch() with While(1) so that Break works correctly.
4429 change correctly implements the Switch operator with a surrounding
4431 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4433 iASL: Added a message if a package initializer list is shorter than
4435 length. Adds a new remark for a Package() declaration if an initializer
4437 exists, but is shorter than the declared length of the package. Although
4438 technically legal, this is probably a coding error and it is seen in the
4439 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4441 iASL: Fixed a problem where the compiler could fault after the maximum
4443 of errors was reached (200).
4445 acpixtract: Fixed a possible warning for pointer cast if the compiler
4447 level set very high.
4449 ----------------------------------------
4450 13 October 2009. Summary of changes for version 20091013:
4452 1) ACPI CA Core Subsystem:
4454 Fixed a problem where an Operation Region _REG method could be executed
4456 than once. If a custom address space handler is installed by the host
4458 the "initialize operation regions" phase of the ACPICA initialization,
4460 _REG methods for that address space could be executed twice. This change
4461 fixes the problem. ACPICA BZ 427. Lin Ming.
4463 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4464 invocation of "Scope(\)" is executed (change scope to root), one internal
4465 operand object was leaked. Lin Ming.
4467 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4468 return value is defined as a Field object in the AML, and the field
4469 size is less than or equal to the default width of an integer (32 or
4471 can incorrectly return an Integer instead of a Buffer. ACPICA now
4472 automatically repairs this problem. ACPICA BZ 810.
4474 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4476 "OEM Information" field is often incorrectly returned as an Integer with
4477 value zero if the field is not supported by the platform. This is due to
4479 ambiguity in the ACPI specification. The field should always be a string.
4480 ACPICA now automatically repairs this problem by returning a NULL string
4481 within the returned Package. ACPICA BZ 807.
4483 Example Code and Data Size: These are the sizes for the OS-independent
4484 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4485 debug version of the code includes the debug output trace mechanism and
4487 much larger code and data size.
4490 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4491 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
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 2) iASL Compiler/Disassembler and Tools:
4498 Disassembler: Fixed a problem where references to external symbols that
4499 contained one or more parent-prefixes (carats) were not handled
4501 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4503 Disassembler: Restructured the code so that all functions that handle
4504 external symbols are in a single module. One new file is added,
4507 AML Debugger: Added a max count argument for the Batch command (which
4508 executes multiple predefined methods within the namespace.)
4510 iASL: Updated the compiler documentation (User Reference.) Available at
4511 http://www.acpica.org/documentation/. ACPICA BZ 750.
4513 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4516 ----------------------------------------
4517 03 September 2009. Summary of changes for version 20090903:
4519 1) ACPI CA Core Subsystem:
4521 For Windows Vista compatibility, added the automatic execution of an _INI
4522 method located at the namespace root (\_INI). This method is executed at
4523 table load time. This support is in addition to the automatic execution
4525 \_SB._INI. Lin Ming.
4527 Fixed a possible memory leak in the interpreter for AML package objects
4529 the package initializer list is longer than the defined size of the
4531 This apparently can only happen if the BIOS changes the package size on
4533 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4534 interpreter will truncate the package to the defined size (and issue an
4536 message), but previously could leave the extra objects undeleted if they
4538 pre-created during the argument processing (such is the case if the
4540 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4542 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4543 This has been reported in the field. Previously, ACPICA would zero out
4545 buffer/string. Now, the operation is treated as a noop. Provides Windows
4546 compatibility. ACPICA BZ 803. Lin Ming.
4548 Removed an extraneous error message for ASL constructs of the form
4549 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4551 are seen in many BIOSs and are once again treated as NOOPs and no error
4553 emitted when they are encountered. ACPICA BZ 785.
4555 Fixed an extraneous warning message if a _DSM reserved method returns a
4556 Package object. _DSM can return any type of object, so validation on the
4557 return type cannot be performed. ACPICA BZ 802.
4559 Example Code and Data Size: These are the sizes for the OS-independent
4560 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4561 debug version of the code includes the debug output trace mechanism and
4563 much larger code and data size.
4566 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4567 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4569 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4570 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4572 2) iASL Compiler/Disassembler and Tools:
4574 iASL: Fixed a problem with the use of the Alias operator and Resource
4575 Templates. The correct alias is now constructed and no error is emitted.
4578 iASL: Implemented the -I option to specify additional search directories
4580 include files. Allows multiple additional search paths for include files.
4581 Directories are searched in the order specified on the command line
4583 the local directory is searched.) ACPICA BZ 800.
4585 iASL: Fixed a problem where the full pathname for include files was not
4586 emitted for warnings/errors. This caused the IDE support to not work
4587 properly. ACPICA BZ 765.
4589 iASL: Implemented the -@ option to specify a Windows-style response file
4590 containing additional command line options. ACPICA BZ 801.
4592 AcpiExec: Added support to load multiple AML files simultaneously (such
4595 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4596 pathname. These features allow all machine tables to be easily loaded and
4597 debugged together. ACPICA BZ 804.
4599 Disassembler: Added missing support for disassembly of HEST table Error
4603 ----------------------------------------
4604 30 July 2009. Summary of changes for version 20090730:
4606 The ACPI 4.0 implementation for ACPICA is complete with this release.
4608 1) ACPI CA Core Subsystem:
4610 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4611 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4613 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4615 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4617 have been some ACPI 4.0 changes to other existing tables. Split the large
4618 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4620 ACPI 4.0: Implemented predefined name validation for all new names. There
4622 31 new names in ACPI 4.0. The predefined validation module was split into
4624 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4626 Implemented support for so-called "module-level executable code". This is
4627 executable AML code that exists outside of any control method and is
4629 to be executed at table load time. Although illegal since ACPI 2.0, this
4631 of code still exists and is apparently still being created. Blocks of
4633 code are now detected and executed as intended. Currently, the code
4635 must exist under either an If, Else, or While construct; these are the
4636 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
4638 Implemented an automatic dynamic repair for predefined names that return
4639 nested Package objects. This applies to predefined names that are defined
4641 return a variable-length Package of sub-packages. If the number of sub-
4642 packages is one, BIOS code is occasionally seen that creates a simple
4644 package with no sub-packages. This code attempts to fix the problem by
4645 wrapping a new package object around the existing package. These methods
4647 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
4651 Fixed a regression introduced in 20090625 for the AcpiGetDevices
4653 The _HID/_CID matching was broken and no longer matched IDs correctly.
4657 Fixed a problem with AcpiReset where the reset would silently fail if the
4658 register was one of the protected I/O ports. AcpiReset now bypasses the
4660 validation mechanism. This may eventually be driven into the
4664 Fixed a regression related to the recent update of the AcpiRead/Write
4665 interfaces. A sleep/suspend could fail if the optional PM2 Control
4667 does not exist during an attempt to write the Bus Master Arbitration bit.
4668 (However, some hosts already delete the code that writes this bit, and
4670 code may in fact be obsolete at this date.) ACPICA BZ 799.
4672 Fixed a problem where AcpiTerminate could fault if inadvertently called
4674 in succession. ACPICA BZ 795.
4676 Example Code and Data Size: These are the sizes for the OS-independent
4677 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4678 debug version of the code includes the debug output trace mechanism and
4680 much larger code and data size.
4683 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4684 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4686 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4687 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4689 2) iASL Compiler/Disassembler and Tools:
4691 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
4692 changes to existing tables. ACPICA BZ 775.
4694 ----------------------------------------
4695 25 June 2009. Summary of changes for version 20090625:
4697 The ACPI 4.0 Specification was released on June 16 and is available at
4698 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
4699 continue for the next few releases.
4701 1) ACPI CA Core Subsystem:
4703 ACPI 4.0: Implemented interpreter support for the IPMI operation region
4704 address space. Includes support for bi-directional data buffers and an
4706 address space handler (to be installed by an IPMI device driver.) ACPICA
4710 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
4712 support in both the header files and the disassembler.
4714 Completed a major update for the AcpiGetObjectInfo external interface.
4716 - Support for variable, unlimited length HID, UID, and CID strings.
4717 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
4719 - Call the _SxW power methods on behalf of a device object.
4720 - Determine if a device is a PCI root bridge.
4721 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
4722 These changes will require an update to all callers of this interface.
4724 the updated ACPICA Programmer Reference for details. One new source file
4726 been added - utilities/utids.c. ACPICA BZ 368, 780.
4728 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
4729 transfers. The Value parameter has been extended from 32 bits to 64 bits
4731 order to support new ACPI 4.0 tables. These changes will require an
4734 all callers of these interfaces. See the ACPICA Programmer Reference for
4735 details. ACPICA BZ 768.
4737 Fixed several problems with AcpiAttachData. The handler was not invoked
4739 the host node was deleted. The data sub-object was not automatically
4741 when the host node was deleted. The interface to the handler had an
4743 parameter, this was removed. ACPICA BZ 778.
4745 Enhanced the function that dumps ACPI table headers. All non-printable
4746 characters in the string fields are now replaced with '?' (Signature,
4748 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
4749 these fields are occasionally seen in the field. ACPICA BZ 788.
4751 Fixed a problem with predefined method repair code where the code that
4752 attempts to repair/convert an object of incorrect type is only executed
4754 the first time the predefined method is called. The mechanism that
4756 warnings on subsequent calls was interfering with the repair mechanism.
4759 Fixed a possible memory leak in the predefined validation/repair code
4762 buffer is automatically converted to an expected string object.
4764 Removed obsolete 16-bit files from the distribution and from the current
4766 tree head. ACPICA BZ 776.
4768 Example Code and Data Size: These are the sizes for the OS-independent
4769 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4770 debug version of the code includes the debug output trace mechanism and
4772 much larger code and data size.
4775 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4776 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4778 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4779 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4781 2) iASL Compiler/Disassembler and Tools:
4783 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
4784 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
4786 ACPI 4.0: iASL - implemented compile-time validation support for all new
4787 predefined names and control methods (31 total). ACPICA BZ 769.
4789 ----------------------------------------
4790 21 May 2009. Summary of changes for version 20090521:
4792 1) ACPI CA Core Subsystem:
4794 Disabled the preservation of the SCI enable bit in the PM1 control
4796 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
4799 a "preserved" bit - "OSPM always preserves this bit position", section
4800 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
4801 because the bit needs to be explicitly set by the OS as a workaround. No
4802 machines fail if the bit is not preserved. Therefore, ACPICA no longer
4803 attempts to preserve this bit.
4805 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
4806 incorrectly formed _PRT package could cause a fault. Added validation to
4807 ensure that each package element is actually a sub-package.
4809 Implemented a new interface to install or override a single control
4811 AcpiInstallMethod. This interface is useful when debugging in order to
4813 an existing method or to install a missing method without having to
4815 the entire ACPI table. See the ACPICA Programmer Reference for use and
4816 examples. Lin Ming, Bob Moore.
4818 Fixed several reference count issues with the DdbHandle object that is
4819 created from a Load or LoadTable operator. Prevent premature deletion of
4821 object. Also, mark the object as invalid once the table has been
4823 This is needed because the handle itself may not be deleted after the
4825 unload, depending on whether it has been stored in a named object by the
4828 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
4829 mutexes of the same sync level are acquired but then not released in
4831 opposite order, the internally maintained Current Sync Level becomes
4833 and can cause subsequent execution errors. ACPICA BZ 471.
4835 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
4836 specification has been changed to make the SyncLevel for mutex objects
4838 useful. When releasing a mutex, the SyncLevel of the mutex must now be
4840 same as the current sync level. This makes more sense than the previous
4842 (SyncLevel less than or equal). This change updates the code to match the
4845 Fixed a problem with the local version of the AcpiOsPurgeCache function.
4847 (local) cache must be locked during all cache object deletions. Andrew
4850 Updated the Load operator to use operation region interfaces. This
4852 direct memory mapping with region access calls. Now, all region accesses
4854 through the installed region handler as they should.
4856 Simplified and optimized the NsGetNextNode function. Reduced parameter
4858 and reduced code for this frequently used function.
4860 Example Code and Data Size: These are the sizes for the OS-independent
4861 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4862 debug version of the code includes the debug output trace mechanism and
4864 much larger code and data size.
4867 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4868 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4870 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4871 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4873 2) iASL Compiler/Disassembler and Tools:
4875 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
4877 with sub-table disassembly and handling invalid sub-tables. Attempt
4879 after an invalid sub-table ID.
4881 ----------------------------------------
4882 22 April 2009. Summary of changes for version 20090422:
4884 1) ACPI CA Core Subsystem:
4886 Fixed a compatibility issue with the recently released I/O port
4888 mechanism. For windows compatibility, 1) On a port protection violation,
4889 simply ignore the request and do not return an exception (allow the
4891 method to continue execution.) 2) If only part of the request overlaps a
4892 protected port, read/write the individual ports that are not protected.
4896 Enhanced the execution of the ASL/AML BreakPoint operator so that it
4898 breaks into the AML debugger if the debugger is present. This matches the
4899 ACPI-defined behavior.
4901 Fixed several possible warnings related to the use of the configurable
4902 ACPI_THREAD_ID. This type can now be configured as either an integer or a
4903 pointer with no warnings. Also fixes several warnings in printf-like
4904 statements for the 64-bit build when the type is configured as a pointer.
4907 Fixed a number of possible warnings when compiling with gcc 4+ (depending
4909 warning options.) Examples include printf formats, aliasing, unused
4911 missing prototypes, missing switch default statements, use of non-ANSI
4912 library functions, use of non-ANSI constructs. See generate/unix/Makefile
4914 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
4916 Example Code and Data Size: These are the sizes for the OS-independent
4917 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4918 debug version of the code includes the debug output trace mechanism and
4920 much larger code and data size.
4923 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4924 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4926 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4927 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4929 2) iASL Compiler/Disassembler and Tools:
4931 iASL: Fixed a generation warning from Bison 2.3 and fixed several
4936 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
4938 correctly digest Windows/DOS formatted files (with CR/LF).
4940 iASL: Added a new option for "quiet mode" (-va) that produces only the
4941 compilation summary, not individual errors and warnings. Useful for large
4944 AcpiExec: Implemented a new option (-z) to enable a forced
4946 timeout that can be used to detect hang conditions during execution of
4948 code (includes both internal semaphores and AML-defined mutexes and
4951 Added new makefiles for the generation of acpica in a generic unix-like
4952 environment. These makefiles are intended to generate the acpica tools
4954 utilities from the original acpica git source tree structure.
4956 Test Suites: Updated and cleaned up the documentation files. Updated the
4957 copyrights to 2009, affecting all source files. Use the new version of
4959 with quiet mode. Increased the number of available semaphores in the
4961 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
4963 an alternate implementation of the semaphore timeout to allow aslts to
4964 execute fully on Cygwin.
4966 ----------------------------------------
4967 20 March 2009. Summary of changes for version 20090320:
4969 1) ACPI CA Core Subsystem:
4971 Fixed a possible race condition between AcpiWalkNamespace and dynamic
4973 unloads. Added a reader/writer locking mechanism to allow multiple
4975 namespace walks (readers), but block a dynamic table unload until it can
4977 exclusive write access to the namespace. This fixes a problem where a
4979 unload could (possibly catastrophically) delete the portion of the
4981 that is currently being examined by a walk. Adds a new file, utlock.c,
4983 implements the reader/writer lock mechanism. ACPICA BZ 749.
4985 Fixed a regression introduced in version 20090220 where a change to the
4987 handling could cause the ACPICA subsystem to access non-existent I/O
4990 Modified the handling of FADT register and table (FACS/DSDT) addresses.
4992 FADT can contain both 32-bit and 64-bit versions of these addresses.
4993 Previously, the 64-bit versions were favored, meaning that if both 32 and
4995 versions were valid, but not equal, the 64-bit version was used. This was
4996 found to cause some machines to fail. Now, in this case, the 32-bit
4998 is used instead. This now matches the Windows behavior.
5000 Implemented a new mechanism to protect certain I/O ports. Provides
5002 compatibility and protects the standard PC I/O ports from access via AML
5003 code. Adds a new file, hwvalid.c
5005 Fixed a possible extraneous warning message from the FADT support. The
5006 message warns of a 32/64 length mismatch between the legacy and GAS
5007 definitions for a register.
5009 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
5011 made obsolete by the port protection mechanism above. It was previously
5013 to validate the entire address range of an operation region, which could
5015 incorrect if the range included illegal ports, but fields within the
5016 operation region did not actually access those ports. Validation is now
5017 performed on a per-field basis instead of the entire region.
5019 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
5020 Ignored bits must be "preserved" according to the ACPI spec. Usually,
5022 means a read/modify/write when writing to the register. However, for
5024 registers, writing a one means clear the event. Writing a zero means
5026 the event (do not clear.) This behavior is clarified in the ACPI 4.0
5028 and the ACPICA code now simply always writes a zero to the ignored bit.
5030 Modified the handling of ignored bits for the PM1 A/B Control Registers.
5032 per the ACPI specification, for the control registers, preserve
5033 (read/modify/write) all bits that are defined as either reserved or
5036 Updated the handling of write-only bits in the PM1 A/B Control Registers.
5037 When reading the register, zero the write-only bits as per the ACPI spec.
5038 ACPICA BZ 443. Lin Ming.
5040 Removed "Linux" from the list of supported _OSI strings. Linux no longer
5041 wants to reply true to this request. The Windows strings are the only
5043 through the AML that are tested and known to work properly.
5046 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5047 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5049 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5050 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5052 2) iASL Compiler/Disassembler and Tools:
5054 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
5058 ----------------------------------------
5059 20 February 2009. Summary of changes for version 20090220:
5061 1) ACPI CA Core Subsystem:
5063 Optimized the ACPI register locking. Removed locking for reads from the
5065 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
5067 not required when reading the single-bit registers. The
5068 AcpiGetRegisterUnlocked function is no longer needed and has been
5070 This will improve performance for reads on these registers. ACPICA BZ
5073 Fixed the parameter validation for AcpiRead/Write. Now return
5074 AE_BAD_PARAMETER if the input register pointer is null, and
5077 the register has an address of zero. Previously, these cases simply
5079 AE_OK. For optional registers such as PM1B status/enable/control, the
5081 should check for a valid register address before calling. ACPICA BZ 748.
5083 Renamed the external ACPI bit register access functions. Renamed
5084 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
5085 functions. The new names are AcpiReadBitRegister and
5086 AcpiWriteBitRegister.
5087 Also, restructured the code for these functions by simplifying the code
5089 and condensing duplicate code to reduce code size.
5091 Added new functions to transparently handle the possibly split PM1 A/B
5092 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
5094 now handle the split registers for PM1 Status, Enable, and Control.
5099 Added a function to handle the PM1 control registers,
5100 AcpiHwWritePm1Control.
5101 This function writes both of the PM1 control registers (A/B). These
5103 are different than the PM1 A/B status and enable registers in that
5105 values can be written to the A/B registers. Most notably, the SLP_TYP
5107 can be different, as per the values returned from the _Sx predefined
5110 Removed an extra register write within AcpiHwClearAcpiStatus. This
5112 was writing an optional PM1B status register twice. The existing call to
5114 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
5116 register. ACPICA BZ 751.
5118 Split out the PM1 Status registers from the FADT. Added new globals for
5120 registers (A/B), similar to the way the PM1 Enable registers are handled.
5121 Instead of overloading the FADT Event Register blocks. This makes the
5123 clearer and less prone to error.
5125 Fixed the warning message for when the platform contains too many ACPI
5127 for the default size of the global root table data structure. The
5129 for the truncation value was incorrect.
5131 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
5132 obsolete macro, since it is now a simple reference to ->common.type.
5134 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
5136 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
5137 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
5138 simply SLEEP_TYPE. ACPICA BZ 754.
5140 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
5141 function is only needed on 64-bit host operating systems and is thus not
5142 included for 32-bit hosts.
5144 Debug output: print the input and result for invocations of the _OSI
5146 control method via the ACPI_LV_INFO debug level. Also, reduced some of
5148 verbosity of this debug level. Len Brown.
5150 Example Code and Data Size: These are the sizes for the OS-independent
5151 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5152 debug version of the code includes the debug output trace mechanism and
5154 much larger code and data size.
5157 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5158 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5160 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5161 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5163 2) iASL Compiler/Disassembler and Tools:
5165 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
5166 various legal performance profiles.
5168 ----------------------------------------
5169 23 January 2009. Summary of changes for version 20090123:
5171 1) ACPI CA Core Subsystem:
5173 Added the 2009 copyright to all module headers and signons. This affects
5174 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5175 the tools/utilities.
5177 Implemented a change to allow the host to override any ACPI table,
5179 dynamically loaded tables. Previously, only the DSDT could be replaced by
5181 host. With this change, the AcpiOsTableOverride interface is called for
5183 table found in the RSDT/XSDT during ACPICA initialization, and also
5185 a table is dynamically loaded via the AML Load operator.
5187 Updated FADT flag definitions, especially the Boot Architecture flags.
5189 Debugger: For the Find command, automatically pad the input ACPI name
5191 underscores if the name is shorter than 4 characters. This enables a
5193 with the actual namespace entry which is itself padded with underscores.
5195 Example Code and Data Size: These are the sizes for the OS-independent
5196 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5197 debug version of the code includes the debug output trace mechanism and
5199 much larger code and data size.
5202 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5203 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5205 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5206 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5208 2) iASL Compiler/Disassembler and Tools:
5210 Fix build error under Bison-2.4.
5212 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5214 flags. Now decode all flags, regardless of the FADT version. Flag output
5215 includes the FADT version which first defined each flag.
5217 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5219 DSDT). Windows only.
5221 ----------------------------------------
5222 04 December 2008. Summary of changes for version 20081204:
5224 1) ACPI CA Core Subsystem:
5226 The ACPICA Programmer Reference has been completely updated and revamped
5228 this release. This includes updates to the external interfaces, OSL
5229 interfaces, the overview sections, and the debugger reference.
5231 Several new ACPICA interfaces have been implemented and documented in the
5232 programmer reference:
5233 AcpiReset - Writes the reset value to the FADT-defined reset register.
5234 AcpiDisableAllGpes - Disable all available GPEs.
5235 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5236 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5237 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5238 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5239 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5241 Most of the public ACPI hardware-related interfaces have been moved to a
5243 file, components/hardware/hwxface.c
5245 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5246 register lengths within the FADT are now used, and the low level ACPI
5247 register access no longer hardcodes the ACPI register lengths. Given that
5248 there may be some risk in actually trusting the FADT register lengths, a
5250 time option was added to fall back to the default hardcoded lengths if
5252 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5253 option is set to true for now, and a warning is issued if a suspicious
5255 register length is overridden with the default value.
5257 Fixed a reference count issue in NsRepairObject. This problem was
5259 in version 20081031 as part of a fix to repair Buffer objects within
5262 Added semaphore support to the Linux/Unix application OS-services layer
5263 (OSL). ACPICA BZ 448. Lin Ming.
5265 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5267 be implemented in the OSL, or will binary semaphores be used instead.
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: 81.7K Code, 17.3K Data, 99.0K Total
5277 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5279 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5280 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5282 2) iASL Compiler/Disassembler and Tools:
5284 iASL: Completed the '-e' option to include additional ACPI tables in
5287 aid with disassembly and External statement generation. ACPICA BZ 742.
5291 iASL: Removed the "named object in while loop" error. The compiler cannot
5292 determine how many times a loop will execute. ACPICA BZ 730.
5294 Disassembler: Implemented support for FADT revision 2 (MS extension).
5298 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5301 ----------------------------------------
5302 31 October 2008. Summary of changes for version 20081031:
5304 1) ACPI CA Core Subsystem:
5306 Restructured the ACPICA header files into public/private. acpi.h now
5308 only the "public" acpica headers. All other acpica headers are "private"
5310 should not be included by acpica users. One new file, accommon.h is used
5312 include the commonly used private headers for acpica code generation.
5314 plans include moving all private headers to a new subdirectory.
5316 Implemented an automatic Buffer->String return value conversion for
5317 predefined ACPI methods. For these methods (such as _BIF), added
5319 conversion for return objects that are required to be a String, but a
5321 was found instead. This can happen when reading string battery data from
5323 operation region, because it used to be difficult to convert the data
5325 buffer to string from within the ASL. Ensures that the host OS is
5327 with a valid null-terminated string. Linux BZ 11822.
5329 Updated the FACS waking vector interfaces. Split
5330 AcpiSetFirmwareWakingVector
5331 into two: one for the 32-bit vector, another for the 64-bit vector. This
5333 required because the host OS must setup the wake much differently for
5335 vector (real vs. protected mode, etc.) and the interface itself should
5338 deciding which vector to use. Also, eliminated the
5339 GetFirmwareWakingVector
5340 interface, as it served no purpose (only the firmware reads the vector,
5342 only writes the vector.) ACPICA BZ 731.
5344 Implemented a mechanism to escape infinite AML While() loops. Added a
5346 counter to force exit from AML While loops if the count becomes too
5348 This can occur in poorly written AML when the hardware does not respond
5349 within a while loop and the loop does not implement a timeout. The
5351 loop count is configurable. A new exception code is returned when a loop
5353 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5355 Optimized the execution of AML While loops. Previously, a control state
5356 object was allocated and freed for each execution of the loop. The
5357 optimization is to simply reuse the control state for each iteration.
5359 speeds up the raw loop execution time by about 5%.
5361 Enhanced the implicit return mechanism. For Windows compatibility, return
5363 implicit integer of value zero for methods that contain no executable
5365 Such methods are seen in the field as stubs (presumably), and can cause
5366 drivers to fail if they expect a return value. Lin Ming.
5368 Allow multiple backslashes as root prefixes in namepaths. In a fully
5369 qualified namepath, allow multiple backslash prefixes. This can happen
5371 is seen in the field) because of the use of a double-backslash in strings
5372 (since backslash is the escape character) causing confusion. ACPICA BZ
5376 Emit a warning if two different FACS or DSDT tables are discovered in the
5377 FADT. Checks if there are two valid but different addresses for the FACS
5379 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5381 Consolidated the method argument count validation code. Merged the code
5383 validates control method argument counts into the predefined validation
5384 module. Eliminates possible multiple warnings for incorrect argument
5387 Implemented ACPICA example code. Includes code for ACPICA initialization,
5388 handler installation, and calling a control method. Available at
5389 source/tools/examples.
5391 Added a global pointer for FACS table to simplify internal FACS access.
5393 the global pointer instead of using AcpiGetTableByIndex for each FACS
5395 This simplifies the code for the Global Lock and the Firmware Waking
5398 Example Code and Data Size: These are the sizes for the OS-independent
5399 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5400 debug version of the code includes the debug output trace mechanism and
5402 much larger code and data size.
5405 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5406 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5408 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5409 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5411 2) iASL Compiler/Disassembler and Tools:
5413 iASL: Improved disassembly of external method calls. Added the -e option
5415 allow the inclusion of additional ACPI tables to help with the
5418 method invocations and the generation of external declarations during the
5419 disassembly. Certain external method invocations cannot be disassembled
5420 properly without the actual declaration of the method. Use the -e option
5422 include the table where the external method(s) are actually declared.
5424 useful for disassembling SSDTs that make method calls back to the master
5425 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5427 -e dsdt.aml ssdt1.aml
5429 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5430 problem where the use of an alias within a namepath would result in a not
5431 found error or cause the compiler to fault. Also now allows forward
5432 references from the Alias operator itself. ACPICA BZ 738.
5434 ----------------------------------------
5435 26 September 2008. Summary of changes for version 20080926:
5437 1) ACPI CA Core Subsystem:
5439 Designed and implemented a mechanism to validate predefined ACPI methods
5441 objects. This code validates the predefined ACPI objects (objects whose
5443 start with underscore) that appear in the namespace, at the time they are
5444 evaluated. The argument count and the type of the returned object are
5445 validated against the ACPI specification. The purpose of this validation
5447 to detect problems with the BIOS-implemented predefined ACPI objects
5449 the results are returned to the ACPI-related drivers. Future enhancements
5451 include actual repair of incorrect return objects where possible. Two new
5452 files are nspredef.c and acpredef.h.
5454 Fixed a fault in the AML parser if a memory allocation fails during the
5456 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5458 Fixed an issue with implicit return compatibility. This change improves
5460 implicit return mechanism to be more compatible with the MS interpreter.
5462 Ming, ACPICA BZ 349.
5464 Implemented support for zero-length buffer-to-string conversions. Allow
5466 length strings during interpreter buffer-to-string conversions. For
5468 during the ToDecimalString and ToHexString operators, as well as implicit
5469 conversions. Fiodor Suietov, ACPICA BZ 585.
5471 Fixed two possible memory leaks in the error exit paths of
5472 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5474 similar in that they use a stack of state objects in order to eliminate
5475 recursion. The stack must be fully unwound and deallocated if an error
5476 occurs. Lin Ming. ACPICA BZ 383.
5478 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5480 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5481 Moore ACPICA BZ 442.
5483 Removed the obsolete version number in module headers. Removed the
5484 "$Revision" number that appeared in each module header. This version
5486 was useful under SourceSafe and CVS, but has no meaning under git. It is
5488 only incorrect, it could also be misleading.
5490 Example Code and Data Size: These are the sizes for the OS-independent
5491 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5492 debug version of the code includes the debug output trace mechanism and
5494 much larger code and data size.
5497 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5498 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5500 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5501 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5503 ----------------------------------------
5504 29 August 2008. Summary of changes for version 20080829:
5506 1) ACPI CA Core Subsystem:
5508 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5509 Reference. Changes include the elimination of cheating on the Object
5511 for the DdbHandle subtype, addition of a reference class field to
5512 differentiate the various reference types (instead of an AML opcode), and
5514 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5516 Reduce an error to a warning for an incorrect method argument count.
5517 Previously aborted with an error if too few arguments were passed to a
5518 control method via the external ACPICA interface. Now issue a warning
5520 and continue. Handles the case where the method inadvertently declares
5522 many arguments, but does not actually use the extra ones. Applies mainly
5524 the predefined methods. Lin Ming. Linux BZ 11032.
5526 Disallow the evaluation of named object types with no intrinsic value.
5528 AE_TYPE for objects that have no value and therefore evaluation is
5530 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5532 these types were allowed, but an exception would be generated at some
5534 during the evaluation. Now, the error is generated up front.
5536 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5537 (nsnames.c). Fixes a leak in the error exit path.
5539 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5541 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5543 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5546 Removed obsolete and/or unused exception codes from the acexcep.h header.
5547 There is the possibility that certain device drivers may be affected if
5549 use any of these exceptions.
5551 The ACPICA documentation has been added to the public git source tree,
5553 acpica/documents. Included are the ACPICA programmer reference, the iASL
5554 compiler reference, and the changes.txt release logfile.
5556 Example Code and Data Size: These are the sizes for the OS-independent
5557 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5558 debug version of the code includes the debug output trace mechanism and
5560 much larger code and data size.
5563 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5564 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5566 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5567 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5569 2) iASL Compiler/Disassembler and Tools:
5571 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5572 defines _SCP with 3 arguments. Previous versions defined it with only 1
5573 argument. iASL now allows both definitions.
5575 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5577 length subtables when disassembling ACPI tables. Also fixed a couple of
5578 errors where a full 16-bit table type field was not extracted from the
5582 acpisrc: Improve comment counting mechanism for generating source code
5583 statistics. Count first and last lines of multi-line comments as
5585 not comment lines. Handle Linux legal header in addition to standard
5589 ----------------------------------------
5591 29 July 2008. Summary of changes for version 20080729:
5593 1) ACPI CA Core Subsystem:
5595 Fix a possible deadlock in the GPE dispatch. Remove call to
5596 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5598 to acquire the GPE lock but can deadlock since the GPE lock is already
5600 at dispatch time. This code was introduced in version 20060831 as a
5602 to Linux BZ 6881 and has since been removed from Linux.
5604 Add a function to dereference returned reference objects. Examines the
5606 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5608 automatically dereferenced in an attempt to return something useful
5610 reference types cannot be converted into an external ACPI_OBJECT.)
5612 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5614 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5615 subtables for the MADT and one new subtable for the SRAT. Includes
5616 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5618 Specification, June 2008.
5620 Additional error checking for pathname utilities. Add error check after
5622 calls to AcpiNsGetPathnameLength. Add status return from
5623 AcpiNsBuildExternalPath and check after all calls. Add parameter
5625 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5627 Return status from the global init function AcpiUtGlobalInitialize. This
5629 used by both the kernel subsystem and the utilities such as iASL
5631 The function could possibly fail when the caches are initialized. Yang
5634 Add a function to decode reference object types to strings. Created for
5635 improved error messages.
5637 Improve object conversion error messages. Better error messages during
5639 conversion from internal to the external ACPI_OBJECT. Used for external
5641 to AcpiEvaluateObject.
5643 Example Code and Data Size: These are the sizes for the OS-independent
5644 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5645 debug version of the code includes the debug output trace mechanism and
5647 much larger code and data size.
5650 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5651 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5653 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5654 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5656 2) iASL Compiler/Disassembler and Tools:
5658 Debugger: fix a possible hang when evaluating non-methods. Fixes a
5660 introduced in version 20080701. If the object being evaluated (via
5662 command) is not a method, the debugger can hang while trying to obtain
5664 existent parameters.
5666 iASL: relax error for using reserved "_T_x" identifiers. These names can
5667 appear in a disassembled ASL file if they were emitted by the original
5668 compiler. Instead of issuing an error or warning and forcing the user to
5669 manually change these names, issue a remark instead.
5671 iASL: error if named object created in while loop. Emit an error if any
5673 object is created within a While loop. If allowed, this code will
5676 run-time error on the second iteration of the loop when an attempt is
5679 create the same named object twice. ACPICA bugzilla 730.
5681 iASL: Support absolute pathnames for include files. Add support for
5683 pathnames within the Include operator. previously, only relative
5687 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
5689 The ACPI spec requires one interrupt minimum. BZ 423
5691 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
5692 Handles the case for the Interrupt Resource Descriptor where
5693 the ResourceSource argument is omitted but ResourceSourceIndex
5694 is present. Now leave room for the Index. BZ 426
5696 iASL: Prevent error message if CondRefOf target does not exist. Fixes
5698 where an error message is emitted if the target does not exist. BZ 516
5700 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
5701 (get ACPI tables on Windows). This was apparently broken in version
5704 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
5706 the EOF happens immediately after the last table in the input file. Print
5707 completion message. Previously, no message was displayed in this case.
5709 ----------------------------------------
5710 01 July 2008. Summary of changes for version 20080701:
5712 0) Git source tree / acpica.org
5714 Fixed a problem where a git-clone from http would not transfer the entire
5717 1) ACPI CA Core Subsystem:
5719 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
5720 enable bit. Now performs a read-change-write of the enable register
5722 of simply writing out the cached enable mask. This will prevent
5724 enabling of GPEs if a rogue GPE is received during initialization (before
5726 handlers are installed.)
5728 Implemented a copy for dynamically loaded tables. Previously, dynamically
5729 loaded tables were simply mapped - but on some machines this memory is
5730 corrupted after suspend. Now copy the table to a local buffer. For the
5731 OpRegion case, added checksum verify. Use the table length from the table
5732 header, not the region length. For the Buffer case, use the table length
5733 also. Dennis Noordsij, Bob Moore. BZ 10734
5735 Fixed a problem where the same ACPI table could not be dynamically loaded
5737 unloaded more than once. Without this change, a table cannot be loaded
5739 once it has been loaded/unloaded one time. The current mechanism does not
5740 unregister a table upon an unload. During a load, if the same table is
5742 this no longer returns an exception. BZ 722
5744 Fixed a problem where the wrong descriptor length was calculated for the
5745 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
5747 are calculated as 12 bytes long, but the actual length in the internal
5748 descriptor is 16 because of the round-up to 8 on the 64-bit build.
5750 by Linn Crosetto. BZ 728
5752 Fixed a possible memory leak in the Unload operator. The DdbHandle
5754 by Load() did not have its reference count decremented during unload,
5756 to a memory leak. Lin Ming. BZ 727
5758 Fixed a possible memory leak when deleting thermal/processor objects. Any
5759 associated notify handlers (and objects) were not being deleted. Fiodor
5762 Fixed the ordering of the ASCII names in the global mutex table to match
5764 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
5766 Vegard Nossum. BZ 726
5768 Enhanced the AcpiGetObjectInfo interface to return the number of required
5769 arguments if the object is a control method. Added this call to the
5771 so the proper number of default arguments are passed to a method. This
5772 prevents a warning when executing methods from AcpiExec.
5774 Added a check for an invalid handle in AcpiGetObjectInfo. Return
5775 AE_BAD_PARAMETER if input handle is invalid. BZ 474
5777 Fixed an extraneous warning from exconfig.c on the 64-bit build.
5779 Example Code and Data Size: These are the sizes for the OS-independent
5780 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5781 debug version of the code includes the debug output trace mechanism and
5783 much larger code and data size.
5786 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5787 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5789 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5790 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5792 2) iASL Compiler/Disassembler and Tools:
5794 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
5795 resource descriptor names.
5797 iASL: Detect invalid ASCII characters in input (windows version). Removed
5799 "-CF" flag from the flex compile, enables correct detection of non-ASCII
5800 characters in the input. BZ 441
5802 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
5804 "result of operation not used" warning when the DDB handle returned from
5805 LoadTable is not used. The warning is not needed. BZ 590
5807 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
5810 pass address of table to the AML. Added option to disable OpRegion
5812 to allow creation of an OpRegion with a real address that was passed to
5814 All of this allows testing of the Load and Unload operators from
5817 Debugger: update tables command for unloaded tables. Handle unloaded
5819 and use the standard table header output routine.
5821 ----------------------------------------
5822 09 June 2008. Summary of changes for version 20080609:
5824 1) ACPI CA Core Subsystem:
5826 Implemented a workaround for reversed _PRT entries. A significant number
5828 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
5829 change dynamically detects and repairs this problem. Provides
5831 with MS ACPI. BZ 6859
5833 Simplified the internal ACPI hardware interfaces to eliminate the locking
5834 flag parameter from Register Read/Write. Added a new external interface,
5835 AcpiGetRegisterUnlocked.
5837 Fixed a problem where the invocation of a GPE control method could hang.
5839 was a regression introduced in 20080514. The new method argument count
5840 validation mechanism can enter an infinite loop when a GPE method is
5841 dispatched. Problem fixed by removing the obsolete code that passed GPE
5843 information to the notify handler via the control method parameter
5846 Fixed a problem where the _SST execution status was incorrectly returned
5848 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
5850 20080514. _SST is optional and a NOT_FOUND exception should never be
5853 Fixed a problem where a deleted object could be accessed from within the
5855 parser. This was a regression introduced in version 20080123 as a fix for
5857 Unload operator. Lin Ming. BZ 10669
5859 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
5861 and eliminated the use of a negative index in a loop. Operands are now
5862 displayed in the correct order, not backwards. This also fixes a
5864 introduced in 20080514 on 64-bit systems where the elimination of
5865 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
5868 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
5870 path did not delete a locally allocated structure.
5872 Updated definitions for the DMAR and SRAT tables to synchronize with the
5873 current specifications. Includes disassembler support.
5875 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
5876 loop termination value was used. Loop terminated on iteration early,
5878 one mutex. Linn Crosetto
5880 Example Code and Data Size: These are the sizes for the OS-independent
5881 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5882 debug version of the code includes the debug output trace mechanism and
5884 much larger code and data size.
5887 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5888 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5890 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5891 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5893 2) iASL Compiler/Disassembler and Tools:
5895 Disassembler: Implemented support for EisaId() within _CID objects. Now
5896 disassemble integer _CID objects back to EisaId invocations, including
5897 multiple integers within _CID packages. Includes single-step support for
5900 Disassembler: Added support for DMAR and SRAT table definition changes.
5902 ----------------------------------------
5903 14 May 2008. Summary of changes for version 20080514:
5905 1) ACPI CA Core Subsystem:
5907 Fixed a problem where GPEs were enabled too early during the ACPICA
5908 initialization. This could lead to "handler not installed" errors on some
5909 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
5911 ensures that all operation regions and devices throughout the namespace
5913 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
5915 Implemented a change to the enter sleep code. Moved execution of the _GTS
5916 method to just before setting sleep enable bit. The execution was moved
5918 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
5919 immediately before the SLP_EN bit is set, as per the ACPI specification.
5922 Implemented a fix to disable unknown GPEs (2nd version). Now always
5924 the GPE, even if ACPICA thinks that that it is already disabled. It is
5925 possible that the AML or some other code has enabled the GPE unbeknownst
5929 Fixed a problem with the Field operator where zero-length fields would
5931 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
5933 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
5935 Implemented a fix for the Load operator, now load the table at the
5937 root. This reverts a change introduced in version 20071019. The table is
5939 loaded at the namespace root even though this goes against the ACPI
5940 specification. This provides compatibility with other ACPI
5942 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
5945 Fixed a problem where ACPICA would not Load() tables with unusual
5947 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
5948 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
5949 Therefore, signature validation is worthless. Apparently MS ACPI accepts
5951 signatures, ACPICA must be compatible. BZ 10454.
5953 Fixed a possible negative array index in AcpiUtValidateException. Added
5955 fields to the exception string arrays to eliminate a -1 subtraction on
5959 Updated the debug tracking macros to reduce overall code and data size.
5960 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
5961 instead of pointers to static strings. Jan Beulich and Bob Moore.
5963 Implemented argument count checking in control method invocation via
5964 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
5966 many. This applies only to extern programmatic control method execution,
5968 method-to-method calls within the AML. Lin Ming.
5970 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
5972 longer needed, especially with the removal of 16-bit support. It was
5974 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
5977 32/64-bit platforms is required.
5979 Added the C const qualifier for appropriate string constants -- mostly
5980 MODULE_NAME and printf format strings. Jan Beulich.
5982 Example Code and Data Size: These are the sizes for the OS-independent
5983 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5984 debug version of the code includes the debug output trace mechanism and
5986 much larger code and data size.
5989 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5990 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5992 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5993 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5995 2) iASL Compiler/Disassembler and Tools:
5997 Implemented ACPI table revision ID validation in the disassembler. Zero
5999 always invalid. For DSDTs, the ID controls the interpreter integer width.
6001 means 32-bit and this is unusual. 2 or greater is 64-bit.
6003 ----------------------------------------
6004 21 March 2008. Summary of changes for version 20080321:
6006 1) ACPI CA Core Subsystem:
6008 Implemented an additional change to the GPE support in order to suppress
6009 spurious or stray GPEs. The AcpiEvDisableGpe function will now
6011 disable incoming GPEs that are neither enabled nor disabled -- meaning
6013 the GPE is unknown to the system. This should prevent future interrupt
6015 from that GPE. BZ 6217 (Zhang Rui)
6017 Fixed a problem where NULL package elements were not returned to the
6018 AcpiEvaluateObject interface correctly. The element was simply ignored
6019 instead of returning a NULL ACPI_OBJECT package element, potentially
6021 a buffer overflow and/or confusing the caller who expected a fixed number
6023 elements. BZ 10132 (Lin Ming, Bob Moore)
6025 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
6027 Qword), Field, BankField, and IndexField operators when invoked from
6029 an executing control method. In this case, these operators created
6031 nodes that were incorrectly left marked as permanent nodes instead of
6032 temporary nodes. This could cause a problem if there is race condition
6033 between an exiting control method and a running namespace walk. (Reported
6037 Fixed a problem where the CreateField and CreateXXXField operators would
6038 incorrectly allow duplicate names (the name of the field) with no
6042 Implemented several changes for Notify handling. Added support for new
6044 values (ACPI 2.0+) and improved the Notify debug output. Notify on
6045 PowerResource objects is no longer allowed, as per the ACPI
6047 (Bob Moore, Zhang Rui)
6049 All Reference Objects returned via the AcpiEvaluateObject interface are
6051 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
6053 NULL objects - either NULL package elements or unresolved named
6056 Fixed a problem where an extraneous debug message was produced for
6058 objects (when debugging enabled). The message "Package List length larger
6059 than NumElements count" is now produced in the correct case, and is now
6061 error message rather than a debug message. Added a debug message for the
6062 opposite case, where NumElements is larger than the Package List (the
6064 will be padded out with NULL elements as per the ACPI spec.)
6066 Implemented several improvements for the output of the ASL "Debug" object
6068 clarify and keep all data for a given object on one output line.
6070 Fixed two size calculation issues with the variable-length Start
6072 resource descriptor.
6074 Example Code and Data Size: These are the sizes for the OS-independent
6075 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6076 debug version of the code includes the debug output trace mechanism and
6078 a much larger code and data size.
6081 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6082 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6084 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6085 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6087 2) iASL Compiler/Disassembler and Tools:
6089 Fixed a problem with the use of the Switch operator where execution of
6091 containing method by multiple concurrent threads could cause an
6092 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
6093 actual Switch opcode, it must be simulated with local named temporary
6094 variables and if/else pairs. The solution chosen was to mark any method
6096 uses Switch as Serialized, thus preventing multiple thread entries. BZ
6099 ----------------------------------------
6100 13 February 2008. Summary of changes for version 20080213:
6102 1) ACPI CA Core Subsystem:
6104 Implemented another MS compatibility design change for GPE/Notify
6106 GPEs are now cleared/enabled asynchronously to allow all pending notifies
6108 complete first. It is expected that the OSL will queue the enable request
6109 behind all pending notify requests (may require changes to the local host
6111 in AcpiOsExecute). Alexey Starikovskiy.
6113 Fixed a problem where buffer and package objects passed as arguments to a
6114 control method via the external AcpiEvaluateObject interface could cause
6116 AE_AML_INTERNAL exception depending on the order and type of operators
6117 executed by the target control method.
6119 Fixed a problem where resource descriptor size optimization could cause a
6120 problem when a _CRS resource template is passed to a _SRS method. The
6122 resource template must use the same descriptors (with the same size) as
6123 returned from _CRS. This change affects the following resource
6125 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
6128 Fixed a problem where a CopyObject to RegionField, BankField, and
6130 objects did not perform an implicit conversion as it should. These types
6132 retain their initial type permanently as per the ACPI specification.
6134 a CopyObject to all other object types should not perform an implicit
6135 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
6137 Fixed a problem with the AcpiGetDevices interface where the mechanism to
6138 match device CIDs did not examine the entire list of available CIDs, but
6139 instead aborted on the first non-matching CID. Andrew Patterson.
6141 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
6143 inadvertently changed to return a 16-bit value instead of a 32-bit value,
6144 truncating the upper dword of a 64-bit value. This macro is only used to
6145 display debug output, so no incorrect calculations were made. Also,
6146 reimplemented the macro so that a 64-bit shift is not performed by
6147 inefficient compilers.
6149 Added missing va_end statements that should correspond with each va_start
6152 Example Code and Data Size: These are the sizes for the OS-independent
6153 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6154 debug version of the code includes the debug output trace mechanism and
6156 a much larger code and data size.
6159 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6160 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6162 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6163 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6165 2) iASL Compiler/Disassembler and Tools:
6167 Implemented full disassembler support for the following new ACPI tables:
6168 BERT, EINJ, and ERST. Implemented partial disassembler support for the
6169 complicated HEST table. These tables support the Windows Hardware Error
6170 Architecture (WHEA).
6172 ----------------------------------------
6173 23 January 2008. Summary of changes for version 20080123:
6175 1) ACPI CA Core Subsystem:
6177 Added the 2008 copyright to all module headers and signons. This affects
6178 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6179 the tools/utilities.
6181 Fixed a problem with the SizeOf operator when used with Package and
6183 objects. These objects have deferred execution for some arguments, and
6185 execution is now completed before the SizeOf is executed. This problem
6187 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6191 Implemented an enhancement to the interpreter "slack mode". In the
6194 an explicit return or an implicitly returned object from the last
6196 opcode, a control method will now implicitly return an integer of value 0
6198 Microsoft compatibility. (Lin Ming) BZ 392
6200 Fixed a problem with the Load operator where an exception was not
6203 the case where the table is already loaded. (Lin Ming) BZ 463
6205 Implemented support for the use of DDBHandles as an Indexed Reference, as
6207 the ACPI spec. (Lin Ming) BZ 486
6209 Implemented support for UserTerm (Method invocation) for the Unload
6211 as per the ACPI spec. (Lin Ming) BZ 580
6213 Fixed a problem with the LoadTable operator where the OemId and
6215 input strings could cause unexpected failures if they were shorter than
6217 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6219 Implemented support for UserTerm (Method invocation) for the Unload
6221 as per the ACPI spec. (Lin Ming) BZ 580
6223 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6225 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6227 Example Code and Data Size: These are the sizes for the OS-independent
6228 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6229 debug version of the code includes the debug output trace mechanism and
6231 a much larger code and data size.
6234 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6235 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6237 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6238 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6240 2) iASL Compiler/Disassembler and Tools:
6242 Implemented support in the disassembler for checksum validation on
6244 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6246 header dump at the start of the disassembly.
6248 Implemented additional debugging information in the namespace listing
6250 created during compilation. In addition to the namespace hierarchy, the
6252 pathname to each namespace object is displayed.
6254 Fixed a problem with the disassembler where invalid ACPI tables could
6256 faults or infinite loops.
6258 Fixed an unexpected parse error when using the optional "parameter types"
6259 list in a control method declaration. (Lin Ming) BZ 397
6261 Fixed a problem where two External declarations with the same name did
6263 cause an error (Lin Ming) BZ 509
6265 Implemented support for full TermArgs (adding Argx, Localx and method
6266 invocation) for the ParameterData parameter to the LoadTable operator.
6270 ----------------------------------------
6271 19 December 2007. Summary of changes for version 20071219:
6273 1) ACPI CA Core Subsystem:
6275 Implemented full support for deferred execution for the TermArg string
6276 arguments for DataTableRegion. This enables forward references and full
6277 operand resolution for the three string arguments. Similar to
6279 deferred argument execution.) Lin Ming. BZ 430
6281 Implemented full argument resolution support for the BankValue argument
6283 BankField. Previously, only constants were supported, now any TermArg may
6285 used. Lin Ming BZ 387, 393
6287 Fixed a problem with AcpiGetDevices where the search of a branch of the
6288 device tree could be terminated prematurely. In accordance with the ACPI
6289 specification, the search down the current branch is terminated if a
6291 is both not present and not functional (instead of just not present.)
6295 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6297 the underlying AML code changed the GPE enable registers. Now, any
6299 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6301 instead of simply ignored. Rui Zhang.
6303 Fixed a problem with Index Fields where the Index register was
6305 limited to a maximum of 32 bits. Now any size may be used.
6307 Fixed a couple memory leaks associated with "implicit return" objects
6309 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6311 Example Code and Data Size: These are the sizes for the OS-independent
6312 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6313 debug version of the code includes the debug output trace mechanism and
6315 a much larger code and data size.
6318 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6319 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6321 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6322 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6324 ----------------------------------------
6325 14 November 2007. Summary of changes for version 20071114:
6327 1) ACPI CA Core Subsystem:
6329 Implemented event counters for each of the Fixed Events, the ACPI SCI
6330 (interrupt) itself, and control methods executed. Named
6331 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6333 should be useful for debugging and statistics.
6335 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6336 contents of the various event counters. Returns the current values for
6337 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6338 AcpiMethodCount. The interface can be expanded in the future if new
6340 are added. Device drivers should use this interface rather than access
6344 Fixed a problem with the FromBCD and ToBCD operators. With some
6346 the ShortDivide function worked incorrectly, causing problems with the
6348 functions with large input values. A truncation from 64-bit to 32-bit
6349 inadvertently occurred. Internal BZ 435. Lin Ming
6351 Fixed a problem with Index references passed as method arguments.
6353 passed as arguments to control methods were dereferenced immediately
6355 control was passed to the called method). The references are now
6357 passed directly to the called method. BZ 5389. Lin Ming
6359 Fixed a problem with CopyObject used in conjunction with the Index
6361 The reference was incorrectly dereferenced before the copy. The reference
6363 now correctly copied. BZ 5391. Lin Ming
6365 Fixed a problem with Control Method references within Package objects.
6367 references are now correctly generated. This completes the package
6368 construction overhaul that began in version 20071019.
6370 Example Code and Data Size: These are the sizes for the OS-independent
6371 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6372 debug version of the code includes the debug output trace mechanism and
6374 a much larger code and data size.
6377 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6378 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6380 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6381 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6384 2) iASL Compiler/Disassembler and Tools:
6386 The AcpiExec utility now installs handlers for all of the predefined
6387 Operation Region types. New types supported are: PCI_Config, CMOS, and
6390 Fixed a problem with the 64-bit version of AcpiExec where the extended
6392 bit) address fields for the DSDT and FACS within the FADT were not being
6393 used, causing truncation of the upper 32-bits of these addresses. Lin
6397 ----------------------------------------
6398 19 October 2007. Summary of changes for version 20071019:
6400 1) ACPI CA Core Subsystem:
6402 Fixed a problem with the Alias operator when the target of the alias is a
6403 named ASL operator that opens a new scope -- Scope, Device,
6405 Processor, and ThermalZone. In these cases, any children of the original
6406 operator could not be accessed via the alias, potentially causing
6408 AE_NOT_FOUND exceptions. (BZ 9067)
6410 Fixed a problem with the Package operator where all named references were
6411 created as object references and left otherwise unresolved. According to
6413 ACPI specification, a Package can only contain Data Objects or references
6415 control methods. The implication is that named references to Data Objects
6416 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6417 immediately upon package creation. This is the approach taken with this
6418 change. References to all other named objects (Methods, Devices, Scopes,
6419 etc.) are all now properly created as reference objects. (BZ 5328)
6421 Reverted a change to Notify handling that was introduced in version
6422 20070508. This version changed the Notify handling from asynchronous to
6423 fully synchronous (Device driver Notify handling with respect to the
6425 ASL operator). It was found that this change caused more problems than it
6426 solved and was removed by most users.
6428 Fixed a problem with the Increment and Decrement operators where the type
6430 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6433 Fixed a problem with the Load and LoadTable operators where the table
6434 location within the namespace was ignored. Instead, the table was always
6435 loaded into the root or current scope. Lin Ming.
6437 Fixed a problem with the Load operator when loading a table from a buffer
6438 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6440 Fixed a problem with the Debug object where a store of a DdbHandle
6442 object to the Debug object could cause a fault.
6444 Added a table checksum verification for the Load operator, in the case
6446 the load is from a buffer. (BZ 578).
6448 Implemented additional parameter validation for the LoadTable operator.
6450 length of the input strings SignatureString, OemIdString, and OemTableId
6452 now checked for maximum lengths. (BZ 582) Lin Ming.
6454 Example Code and Data Size: These are the sizes for the OS-independent
6455 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6456 debug version of the code includes the debug output trace mechanism and
6458 a much larger code and data size.
6461 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6462 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6464 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6465 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6468 2) iASL Compiler/Disassembler:
6470 Fixed a problem where if a single file was specified and the file did not
6471 exist, no error message was emitted. (Introduced with wildcard support in
6474 ----------------------------------------
6475 19 September 2007. Summary of changes for version 20070919:
6477 1) ACPI CA Core Subsystem:
6479 Designed and implemented new external interfaces to install and remove
6480 handlers for ACPI table-related events. Current events that are defined
6482 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6483 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6484 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6486 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6487 (acpi_serialized option on Linux) could cause some systems to hang during
6488 initialization. (Bob Moore) BZ 8171
6490 Fixed a problem where objects of certain types (Device, ThermalZone,
6491 Processor, PowerResource) can be not found if they are declared and
6492 referenced from within the same control method (Lin Ming) BZ 341
6494 Example Code and Data Size: These are the sizes for the OS-independent
6495 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6496 debug version of the code includes the debug output trace mechanism and
6498 a much larger code and data size.
6501 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6502 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6504 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6505 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6508 2) iASL Compiler/Disassembler:
6510 Implemented support to allow multiple files to be compiled/disassembled
6513 single invocation. This includes command line wildcard support for both
6515 Windows and Unix versions of the compiler. This feature simplifies the
6516 disassembly and compilation of multiple ACPI tables in a single
6519 ----------------------------------------
6520 08 May 2007. Summary of changes for version 20070508:
6522 1) ACPI CA Core Subsystem:
6524 Implemented a Microsoft compatibility design change for the handling of
6526 Notify AML operator. Previously, notify handlers were dispatched and
6527 executed completely asynchronously in a deferred thread. The new design
6528 still executes the notify handlers in a different thread, but the
6530 thread that executed the Notify() now waits at a synchronization point
6532 the notify handler to complete. Some machines depend on a synchronous
6534 operator in order to operate correctly.
6536 Implemented support to allow Package objects to be passed as method
6537 arguments to the external AcpiEvaluateObject interface. Previously, this
6538 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6539 implemented since there were no reserved control methods that required it
6542 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6544 contained invalid non-zero values in reserved fields could cause later
6545 failures because these fields have meaning in later revisions of the
6547 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6549 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6551 Fixed a problem where the Global Lock handle was not properly updated if
6553 thread that acquired the Global Lock via executing AML code then
6555 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6559 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6560 could be corrupted if the interrupt being removed was at the head of the
6561 list. Reported by Linn Crosetto.
6563 Example Code and Data Size: These are the sizes for the OS-independent
6564 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6565 debug version of the code includes the debug output trace mechanism and
6567 a much larger code and data size.
6570 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6571 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6573 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6574 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6576 ----------------------------------------
6577 20 March 2007. Summary of changes for version 20070320:
6579 1) ACPI CA Core Subsystem:
6581 Implemented a change to the order of interpretation and evaluation of AML
6582 operand objects within the AML interpreter. The interpreter now evaluates
6583 operands in the order that they appear in the AML stream (and the
6584 corresponding ASL code), instead of in the reverse order (after the
6586 operand list has been parsed). The previous behavior caused several
6588 incompatibilities with the Microsoft AML interpreter as well as being
6589 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6591 Implemented a change to the ACPI Global Lock support. All interfaces to
6593 global lock now allow the same thread to acquire the lock multiple times.
6594 This affects the AcpiAcquireGlobalLock external interface to the global
6596 as well as the internal use of the global lock to support AML fields -- a
6597 control method that is holding the global lock can now simultaneously
6599 AML fields that require global lock protection. Previously, in both
6601 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6603 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6604 Controller. There is no change to the behavior of the AML Acquire
6606 as this can already be used to acquire a mutex multiple times by the same
6607 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6609 Fixed a problem where invalid objects could be referenced in the AML
6610 Interpreter after error conditions. During operand evaluation, ensure
6612 the internal "Return Object" field is cleared on error and only valid
6613 pointers are stored there. Caused occasional access to deleted objects
6615 resulted in "large reference count" warning messages. Valery Podrezov.
6617 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6619 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6622 Fixed an internal problem with the handling of result objects on the
6623 interpreter result stack. BZ 7872. Valery Podrezov.
6625 Removed obsolete code that handled the case where AML_NAME_OP is the
6627 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6628 7874. Valery Podrezov.
6630 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6633 remnant from the previously discontinued 16-bit support.
6635 Example Code and Data Size: These are the sizes for the OS-independent
6636 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6637 debug version of the code includes the debug output trace mechanism and
6639 a much larger code and data size.
6642 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6643 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6645 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6646 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6648 ----------------------------------------
6649 26 January 2007. Summary of changes for version 20070126:
6651 1) ACPI CA Core Subsystem:
6653 Added the 2007 copyright to all module headers and signons. This affects
6654 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6657 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
6658 during a table load. A bad pointer was passed in the case where the DSDT
6660 overridden, causing a fault in this case.
6662 Example Code and Data Size: These are the sizes for the OS-independent
6663 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6664 debug version of the code includes the debug output trace mechanism and
6666 a much larger code and data size.
6669 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6670 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6672 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6673 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6675 ----------------------------------------
6676 15 December 2006. Summary of changes for version 20061215:
6678 1) ACPI CA Core Subsystem:
6680 Support for 16-bit ACPICA has been completely removed since it is no
6682 necessary and it clutters the code. All 16-bit macros, types, and
6683 conditional compiles have been removed, cleaning up and simplifying the
6685 across the entire subsystem. DOS support is no longer needed since the
6686 bootable Linux firmware kit is now available.
6688 The handler for the Global Lock is now removed during AcpiTerminate to
6689 enable a clean subsystem restart, via the implementation of the
6690 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
6693 Implemented enhancements to the multithreading support within the
6695 to enable improved multithreading debugging and evaluation of the
6699 Debugger: Enhanced the Statistics/Memory command to emit the total
6701 memory used during the execution, as well as the maximum memory consumed
6703 each of the various object types. (Valery Podrezov)
6705 Example Code and Data Size: These are the sizes for the OS-independent
6706 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6707 debug version of the code includes the debug output trace mechanism and
6709 a much larger code and data size.
6712 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6713 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6715 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6716 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6719 2) iASL Compiler/Disassembler and Tools:
6721 AcpiExec: Implemented a new option (-m) to display full memory use
6722 statistics upon subsystem/program termination. (Valery Podrezov)
6724 ----------------------------------------
6725 09 November 2006. Summary of changes for version 20061109:
6727 1) ACPI CA Core Subsystem:
6729 Optimized the Load ASL operator in the case where the source operand is
6731 operation region. Simply map the operation region memory, instead of
6732 performing a bytewise read. (Region must be of type SystemMemory, see
6735 Fixed the Load ASL operator for the case where the source operand is a
6736 region field. A buffer object is also allowed as the source operand. BZ
6739 Fixed a problem where the Load ASL operator allowed the source operand to
6741 an operation region of any type. It is now restricted to regions of type
6742 SystemMemory, as per the ACPI specification. BZ 481
6744 Additional cleanup and optimizations for the new Table Manager code.
6746 AcpiEnable will now fail if all of the required ACPI tables are not
6748 (FADT, FACS, DSDT). BZ 477
6750 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
6752 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
6753 manually optimized to be aligned and will not work if it is byte-packed.
6755 Example Code and Data Size: These are the sizes for the OS-independent
6756 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6757 debug version of the code includes the debug output trace mechanism and
6759 a much larger code and data size.
6762 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6763 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6765 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6766 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6769 2) iASL Compiler/Disassembler and Tools:
6771 Fixed a problem where the presence of the _OSI predefined control method
6772 within complex expressions could cause an internal compiler error.
6774 AcpiExec: Implemented full region support for multiple address spaces.
6775 SpaceId is now part of the REGION object. BZ 429
6777 ----------------------------------------
6778 11 October 2006. Summary of changes for version 20061011:
6780 1) ACPI CA Core Subsystem:
6782 Completed an AML interpreter performance enhancement for control method
6783 execution. Previously a 2-pass parse/execution, control methods are now
6784 completely parsed and executed in a single pass. This improves overall
6785 interpreter performance by ~25%, reduces code size, and reduces CPU stack
6786 use. (Valery Podrezov + interpreter changes in version 20051202 that
6787 eliminated namespace loading during the pass one parse.)
6789 Implemented _CID support for PCI Root Bridge detection. If the _HID does
6791 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
6793 obtained and also checked for an ID match.
6795 Implemented additional support for the PCI _ADR execution: upsearch until
6797 device scope is found before executing _ADR. This allows PCI_Config
6798 operation regions to be declared locally within control methods
6802 Fixed a problem with a possible race condition between threads executing
6803 AcpiWalkNamespace and the AML interpreter. This condition was removed by
6804 modifying AcpiWalkNamespace to (by default) ignore all temporary
6806 entries created during any concurrent control method execution. An
6807 additional namespace race condition is known to exist between
6808 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
6811 Restructured the AML ParseLoop function, breaking it into several
6812 subfunctions in order to reduce CPU stack use and improve
6816 AcpiGetHandle: Fix for parameter validation to detect invalid
6818 of prefix handle and pathname. BZ 478
6820 Example Code and Data Size: These are the sizes for the OS-independent
6821 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6822 debug version of the code includes the debug output trace mechanism and
6824 a much larger code and data size.
6827 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6828 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6830 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6831 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6833 2) iASL Compiler/Disassembler and Tools:
6835 Ported the -g option (get local ACPI tables) to the new ACPICA Table
6837 to restore original behavior.
6839 ----------------------------------------
6840 27 September 2006. Summary of changes for version 20060927:
6842 1) ACPI CA Core Subsystem:
6844 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
6845 These functions now use a spinlock for mutual exclusion and the interrupt
6846 level indication flag is not needed.
6848 Fixed a problem with the Global Lock where the lock could appear to be
6849 obtained before it is actually obtained. The global lock semaphore was
6850 inadvertently created with one unit instead of zero units. (BZ 464)
6854 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
6856 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
6858 Example Code and Data Size: These are the sizes for the OS-independent
6859 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6860 debug version of the code includes the debug output trace mechanism and
6862 a much larger code and data size.
6865 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6866 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6868 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6869 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6872 2) iASL Compiler/Disassembler and Tools:
6874 Fixed a compilation problem with the pre-defined Resource Descriptor
6876 names where an "object does not exist" error could be incorrectly
6878 if the parent ResourceTemplate pathname places the template within a
6879 different namespace scope than the current scope. (BZ 7212)
6881 Fixed a problem where the compiler could hang after syntax errors
6883 in an ElseIf construct. (BZ 453)
6885 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
6886 operator. An incorrect output filename was produced when this parameter
6888 a null string (""). Now, the original input filename is used as the AML
6889 output filename, with an ".aml" extension.
6891 Implemented a generic batch command mode for the AcpiExec utility
6893 any AML debugger command) (Valery Podrezov).
6895 ----------------------------------------
6896 12 September 2006. Summary of changes for version 20060912:
6898 1) ACPI CA Core Subsystem:
6900 Enhanced the implementation of the "serialized mode" of the interpreter
6901 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
6902 specified, instead of creating a serialization semaphore per control
6904 the interpreter lock is simply no longer released before a blocking
6905 operation during control method execution. This effectively makes the AML
6906 Interpreter single-threaded. The overhead of a semaphore per-method is
6909 Fixed a regression where an error was no longer emitted if a control
6911 attempts to create 2 objects of the same name. This once again returns
6912 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
6914 will dynamically serialize the control method to possible prevent future
6917 Integrated a fix for a problem with PCI Express HID detection in the PCI
6918 Config Space setup procedure. (BZ 7145)
6920 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
6921 AcpiHwInitialize function - the FADT registers are now validated when the
6924 Added two new warnings during FADT verification - 1) if the FADT is
6926 than the largest known FADT version, and 2) if there is a mismatch
6929 32-bit block address and the 64-bit X counterpart (when both are non-
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, 16.7K Data, 94.6K Total
6940 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6942 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6943 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6946 2) iASL Compiler/Disassembler and Tools:
6948 Fixed a problem with the implementation of the Switch() operator where
6950 temporary variable was declared too close to the actual Switch, instead
6952 at method level. This could cause a problem if the Switch() operator is
6953 within a while loop, causing an error on the second iteration. (BZ 460)
6955 Disassembler - fix for error emitted for unknown type for target of scope
6956 operator. Now, ignore it and continue.
6958 Disassembly of an FADT now verifies the input FADT and reports any errors
6959 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
6961 Disassembly of raw data buffers with byte initialization data now
6963 each output line with the current buffer offset.
6965 Disassembly of ASF! table now includes all variable-length data fields at
6966 the end of some of the subtables.
6968 The disassembler now emits a comment if a buffer appears to be a
6969 ResourceTemplate, but cannot be disassembled as such because the EndTag
6971 not appear at the very end of the buffer.
6973 AcpiExec - Added the "-t" command line option to enable the serialized
6975 of the AML interpreter.
6977 ----------------------------------------
6978 31 August 2006. Summary of changes for version 20060831:
6980 1) ACPI CA Core Subsystem:
6982 Miscellaneous fixes for the Table Manager:
6983 - Correctly initialize internal common FADT for all 64-bit "X" fields
6984 - Fixed a couple table mapping issues during table load
6985 - Fixed a couple alignment issues for IA64
6986 - Initialize input array to zero in AcpiInitializeTables
6987 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
6990 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
6992 immediately disabled to prevent the waking GPE from firing again and to
6993 prevent other wake GPEs from interrupting the wake process.
6995 Added the AcpiGpeCount global that tracks the number of processed GPEs,
6997 be used for debugging systems with a large number of ACPI interrupts.
6999 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
7000 both the ACPICA headers and the disassembler.
7002 Example Code and Data Size: These are the sizes for the OS-independent
7003 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7004 debug version of the code includes the debug output trace mechanism and
7006 a much larger code and data size.
7009 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7010 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7012 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7013 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7016 2) iASL Compiler/Disassembler and Tools:
7018 Disassembler support for the DMAR ACPI table.
7020 ----------------------------------------
7021 23 August 2006. Summary of changes for version 20060823:
7023 1) ACPI CA Core Subsystem:
7025 The Table Manager component has been completely redesigned and
7026 reimplemented. The new design is much simpler, and reduces the overall
7028 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
7030 now possible to obtain the ACPI tables very early during kernel
7031 initialization, even before dynamic memory management is initialized.
7032 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
7034 Obsolete ACPICA interfaces:
7036 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
7039 - AcpiLoadTable: Not needed.
7040 - AcpiUnloadTable: Not needed.
7042 New ACPICA interfaces:
7044 - AcpiInitializeTables: Must be called before the table manager can be
7046 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
7047 allocated memory after it becomes available.
7048 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
7052 Other ACPICA changes:
7054 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
7056 AcpiOsUnmapMemory to free this mapping.
7057 - AcpiGetTable returns the actual mapped table. The mapping is managed
7058 internally and must not be deleted by the caller. Use of this interface
7059 causes no additional dynamic memory allocation.
7060 - AcpiFindRootPointer: Support for physical addressing has been
7062 it appeared to be unused.
7063 - The interface to AcpiOsMapMemory has changed to be consistent with the
7064 other allocation interfaces.
7065 - The interface to AcpiOsGetRootPointer has changed to eliminate
7068 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
7070 bit platforms. Was previously 64 bits on all platforms.
7071 - The interface to the ACPI Global Lock acquire/release macros have
7073 slightly since ACPICA no longer keeps a local copy of the FACS with a
7074 constructed pointer to the actual global lock.
7076 Porting to the new table manager:
7078 - AcpiInitializeTables: Must be called once, and can be called anytime
7079 during the OS initialization process. It allows the host to specify an
7081 of memory to be used to store the internal version of the RSDT/XSDT (root
7082 table). This allows the host to access ACPI tables before memory
7084 is initialized and running.
7085 - AcpiReallocateRootTable: Can be called after memory management is
7087 to copy the root table to a dynamically allocated array, freeing up the
7088 scratch memory specified in the call to AcpiInitializeTables.
7089 - AcpiSubsystemInitialize: This existing interface is independent of the
7090 Table Manager, and does not have to be called before the Table Manager
7092 be used, it only must be called before the rest of ACPICA can be used.
7093 - ACPI Tables: Some changes have been made to the names and structure of
7095 actbl.h and actbl1.h header files and may require changes to existing
7097 For example, bitfields have been completely removed because of their lack
7099 portability across C compilers.
7100 - Update interfaces to the Global Lock acquire/release macros if local
7101 versions are used. (see acwin.h)
7103 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
7107 Example Code and Data Size: These are the sizes for the OS-independent
7108 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7109 debug version of the code includes the debug output trace mechanism and
7111 a much larger code and data size.
7114 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7115 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7117 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7118 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7121 2) iASL Compiler/Disassembler and Tools:
7123 No changes for this release.
7125 ----------------------------------------
7126 21 July 2006. Summary of changes for version 20060721:
7128 1) ACPI CA Core Subsystem:
7130 The full source code for the ASL test suite used to validate the iASL
7131 compiler and the ACPICA core subsystem is being released with the ACPICA
7132 source for the first time. The source is contained in a separate package
7134 consists of over 1100 files that exercise all ASL/AML operators. The
7136 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
7140 Completed a new design and implementation for support of the ACPI Global
7141 Lock. On the OS side, the global lock is now treated as a standard AML
7142 mutex. Previously, multiple OS threads could "acquire" the global lock
7143 simultaneously. However, this could cause the BIOS to be starved out of
7145 lock - especially in cases such as the Embedded Controller driver where
7146 there is a tight coupling between the OS and the BIOS.
7148 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
7149 The Global Lock interrupt handler no longer queues the execution of a
7150 separate thread to signal the global lock semaphore. Instead, the
7152 is signaled directly from the interrupt handler.
7154 Implemented support within the AML interpreter for package objects that
7155 contain a larger AML length (package list length) than the package
7157 count. In this case, the length of the package is truncated to match the
7158 package element count. Some BIOS code apparently modifies the package
7160 on the fly, and this change supports this behavior. Provides
7162 with the MS AML interpreter. (With assistance from Fiodor Suietov)
7164 Implemented a temporary fix for the BankValue parameter of a Bank Field
7166 support all constant values, now including the Zero and One opcodes.
7167 Evaluation of this parameter must eventually be converted to a full
7169 evaluation. A not-implemented error is now returned (temporarily) for
7171 constant values for this parameter.
7173 Fixed problem reports (Fiodor Suietov) integrated:
7174 - Fix for premature object deletion after CopyObject on Operation Region
7178 Example Code and Data Size: These are the sizes for the OS-independent
7179 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7180 debug version of the code includes the debug output trace mechanism and
7182 a much larger code and data size.
7185 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7186 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
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
7192 2) iASL Compiler/Disassembler and Tools:
7194 No changes for this release.
7196 ----------------------------------------
7197 07 July 2006. Summary of changes for version 20060707:
7199 1) ACPI CA Core Subsystem:
7201 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7202 that do not allow the initialization of address pointers within packed
7203 structures - even though the hardware itself may support misaligned
7204 transfers. Some of the debug data structures are packed by default to
7207 Added an error message for the case where AcpiOsGetThreadId() returns
7209 A non-zero value is required by the core ACPICA code to ensure the proper
7210 operation of AML mutexes and recursive control methods.
7212 The DSDT is now the only ACPI table that determines whether the AML
7213 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7215 the hooks for per-table 32/64 switching have been removed from the code.
7217 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7219 Fixed a possible leak of an OwnerID in the error path of
7220 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7221 deletion to a single place in AcpiTbUninstallTable to correct possible
7223 when using the AcpiTbDeleteTablesByType interface (with assistance from
7226 Fixed a problem with Serialized control methods where the semaphore
7227 associated with the method could be over-signaled after multiple method
7230 Fixed two issues with the locking of the internal namespace data
7232 Both the Unload() operator and AcpiUnloadTable interface now lock the
7233 namespace during the namespace deletion associated with the table unload
7234 (with assistance from Linn Crosetto.)
7236 Fixed problem reports (Valery Podrezov) integrated:
7237 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7239 Fixed problem reports (Fiodor Suietov) integrated:
7240 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7241 - On Address Space handler deletion, needless deactivation call (BZ 374)
7242 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7244 - Possible memory leak, Notify sub-objects of Processor, Power,
7247 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7248 - Minimum Length of RSDT should be validated (BZ 379)
7249 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7251 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7255 Example Code and Data Size: These are the sizes for the OS-independent
7256 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7257 debug version of the code includes the debug output trace mechanism and
7259 a much larger code and data size.
7262 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7263 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7265 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7266 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7269 2) iASL Compiler/Disassembler and Tools:
7271 Fixed problem reports:
7272 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7275 ----------------------------------------
7276 23 June 2006. Summary of changes for version 20060623:
7278 1) ACPI CA Core Subsystem:
7280 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7281 allows the type to be customized to the host OS for improved efficiency
7282 (since a spinlock is usually a very small object.)
7284 Implemented support for "ignored" bits in the ACPI registers. According
7286 the ACPI specification, these bits should be preserved when writing the
7287 registers via a read/modify/write cycle. There are 3 bits preserved in
7289 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7291 Implemented the initial deployment of new OSL mutex interfaces. Since
7293 host operating systems have separate mutex and semaphore objects, this
7294 feature was requested. The base code now uses mutexes (and the new mutex
7295 interfaces) wherever a binary semaphore was used previously. However, for
7296 the current release, the mutex interfaces are defined as macros to map
7298 to the existing semaphore interfaces. Therefore, no OSL changes are
7300 at this time. (See acpiosxf.h)
7302 Fixed several problems with the support for the control method SyncLevel
7303 parameter. The SyncLevel now works according to the ACPI specification
7305 in concert with the Mutex SyncLevel parameter, since the current
7307 is a property of the executing thread. Mutual exclusion for control
7309 is now implemented with a mutex instead of a semaphore.
7311 Fixed three instances of the use of the C shift operator in the bitfield
7312 support code (exfldio.c) to avoid the use of a shift value larger than
7314 target data width. The behavior of C compilers is undefined in this case
7316 can cause unpredictable results, and therefore the case must be detected
7318 avoided. (Fiodor Suietov)
7320 Added an info message whenever an SSDT or OEM table is loaded dynamically
7321 via the Load() or LoadTable() ASL operators. This should improve
7323 capability since it will show exactly what tables have been loaded
7325 the tables present in the RSDT/XSDT.)
7327 Example Code and Data Size: These are the sizes for the OS-independent
7328 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7329 debug version of the code includes the debug output trace mechanism and
7331 a much larger code and data size.
7334 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7335 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7337 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7338 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7341 2) iASL Compiler/Disassembler and Tools:
7343 No changes for this release.
7345 ----------------------------------------
7346 08 June 2006. Summary of changes for version 20060608:
7348 1) ACPI CA Core Subsystem:
7350 Converted the locking mutex used for the ACPI hardware to a spinlock.
7352 change should eliminate all problems caused by attempting to acquire a
7353 semaphore at interrupt level, and it means that all ACPICA external
7354 interfaces that directly access the ACPI hardware can be safely called
7356 interrupt level. OSL code that implements the semaphore interfaces should
7358 able to eliminate any workarounds for being called at interrupt level.
7360 Fixed a regression introduced in 20060526 where the ACPI device
7361 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7363 did not have an optional _INI method.
7365 Fixed an IndexField issue where a write to the Data Register should be
7366 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7370 Fixed problem reports (Valery Podrezov) integrated:
7371 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7373 Fixed problem reports (Fiodor Suietov) integrated:
7374 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7376 Removed four global mutexes that were obsolete and were no longer being
7379 Example Code and Data Size: These are the sizes for the OS-independent
7380 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7381 debug version of the code includes the debug output trace mechanism and
7383 a much larger code and data size.
7386 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7387 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7389 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7390 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7393 2) iASL Compiler/Disassembler and Tools:
7395 Fixed a fault when using -g option (get tables from registry) on Windows
7398 Fixed problem reports integrated:
7399 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7400 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7402 - Global table revision override (-r) is ignored (BZ 413)
7404 ----------------------------------------
7405 26 May 2006. Summary of changes for version 20060526:
7407 1) ACPI CA Core Subsystem:
7409 Restructured, flattened, and simplified the internal interfaces for
7410 namespace object evaluation - resulting in smaller code, less CPU stack
7412 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7414 Fixed a problem with the CopyObject operator where the first parameter
7416 not typed correctly for the parser, interpreter, compiler, and
7418 Caused various errors and unexpected behavior.
7420 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7421 produced incorrect results with some C compilers. Since the behavior of C
7422 compilers when the shift value is larger than the datatype width is
7423 apparently not well defined, the interpreter now detects this condition
7425 simply returns zero as expected in all such cases. (BZ 395)
7427 Fixed problem reports (Valery Podrezov) integrated:
7428 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7429 - Allow interpreter to handle nested method declarations (BZ 5361)
7431 Fixed problem reports (Fiodor Suietov) integrated:
7432 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7434 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7436 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7437 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7438 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7439 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7440 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7441 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7442 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7444 - Status of the Global Initialization Handler call not used (BZ 366)
7445 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7447 Example Code and Data Size: These are the sizes for the OS-independent
7448 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7449 debug version of the code includes the debug output trace mechanism and
7451 a much larger code and data size.
7454 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7455 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7457 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7458 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7461 2) iASL Compiler/Disassembler and Tools:
7463 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7464 namespace identifiers with no collision with existing resource descriptor
7465 macro names. This provides compatibility with other ASL compilers and is
7466 most useful for disassembly/recompilation of existing tables without
7468 errors. (With assistance from Thomas Renninger)
7470 Disassembler: fixed an incorrect disassembly problem with the
7471 DataTableRegion and CopyObject operators. Fixed a possible fault during
7472 disassembly of some Alias operators.
7474 ----------------------------------------
7475 12 May 2006. Summary of changes for version 20060512:
7477 1) ACPI CA Core Subsystem:
7479 Replaced the AcpiOsQueueForExecution interface with a new interface named
7480 AcpiOsExecute. The major difference is that the new interface does not
7482 a Priority parameter, this appeared to be useless and has been replaced
7485 Type parameter. The Type tells the host what type of execution is being
7486 requested, such as global lock handler, notify handler, GPE handler, etc.
7487 This allows the host to queue and execute the request as appropriate for
7489 request type, possibly using different work queues and different
7491 for the various request types. This enables fixes for multithreading
7492 deadlock problems such as BZ #5534, and will require changes to all
7494 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7496 Fixed a possible memory leak associated with the support for the so-
7498 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7501 Fixed a problem with the Load() operator where a table load from an
7502 operation region could overwrite an internal table buffer by up to 7
7504 and cause alignment faults on IPF systems. (With assistance from Luming
7507 Example Code and Data Size: These are the sizes for the OS-independent
7508 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7509 debug version of the code includes the debug output trace mechanism and
7511 a much larger code and data size.
7514 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7515 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7517 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7518 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7522 2) iASL Compiler/Disassembler and Tools:
7524 Disassembler: Implemented support to cross reference the internal
7526 and automatically generate ASL External() statements for symbols not
7528 within the current table being disassembled. This will simplify the
7529 disassembly and recompilation of interdependent tables such as SSDTs
7531 these statements will no longer have to be added manually.
7533 Disassembler: Implemented experimental support to automatically detect
7534 invocations of external control methods and generate appropriate
7536 statements. This is problematic because the AML cannot be correctly
7538 until the number of arguments for each control method is known.
7540 standalone method invocations and invocations as the source operand of a
7541 Store() statement are supported.
7543 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7544 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7545 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7546 more readable and likely closer to the original ASL source.
7548 ----------------------------------------
7549 21 April 2006. Summary of changes for version 20060421:
7551 1) ACPI CA Core Subsystem:
7553 Removed a device initialization optimization introduced in 20051216 where
7554 the _STA method was not run unless an _INI was also present for the same
7555 device. This optimization could cause problems because it could allow
7557 methods to be run within a not-present device subtree. (If a not-present
7558 device had no _INI, _STA would not be run, the not-present status would
7560 be discovered, and the children of the device would be incorrectly
7563 Implemented a new _STA optimization where namespace subtrees that do not
7564 contain _INI are identified and ignored during device initialization.
7565 Selectively running _STA can significantly improve boot time on large
7566 machines (with assistance from Len Brown.)
7568 Implemented support for the device initialization case where the returned
7569 _STA flags indicate a device not-present but functioning. In this case,
7571 is not run, but the device children are examined for presence, as per the
7574 Implemented an additional change to the IndexField support in order to
7575 conform to MS behavior. The value written to the Index Register is not
7576 simply a byte offset, it is a byte offset in units of the access width of
7577 the parent Index Field. (Fiodor Suietov)
7579 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7580 interface is called during the creation of all AML operation regions, and
7581 allows the host OS to exert control over what addresses it will allow the
7582 AML code to access. Operation Regions whose addresses are disallowed will
7583 cause a runtime exception when they are actually accessed (will not
7585 or abort table loading.) See oswinxf or osunixxf for an example
7588 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7589 interface allows the host OS to match the various "optional"
7590 interface/behavior strings for the _OSI predefined control method as
7591 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7592 for an example implementation.
7594 Restructured and corrected various problems in the exception handling
7596 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7597 (with assistance from Takayoshi Kochi.)
7599 Modified the Linux source converter to ignore quoted string literals
7601 converting identifiers from mixed to lower case. This will correct
7603 with the disassembler and other areas where such strings must not be
7606 The ACPI_FUNCTION_* macros no longer require quotes around the function
7607 name. This allows the Linux source converter to convert the names, now
7609 the converter ignores quoted strings.
7611 Example Code and Data Size: These are the sizes for the OS-independent
7612 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7613 debug version of the code includes the debug output trace mechanism and
7615 a much larger code and data size.
7619 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7620 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7622 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7623 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7626 2) iASL Compiler/Disassembler and Tools:
7628 Implemented 3 new warnings for iASL, and implemented multiple warning
7632 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7634 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7635 check for the possible timeout, a warning is issued.
7637 2) Useless operators: If an ASL operator does not specify an optional
7639 operand and it also does not use the function return value from the
7640 operator, a warning is issued since the operator effectively does
7643 3) Unreferenced objects: If a namespace object is created, but never
7644 referenced, a warning is issued. This is a warning level 2 since there
7646 cases where this is ok, such as when a secondary table is loaded that
7648 the unreferenced objects. Even so, care is taken to only flag objects
7650 don't look like they will ever be used. For example, the reserved methods
7651 (starting with an underscore) are usually not referenced because it is
7652 expected that the OS will invoke them.
7654 ----------------------------------------
7655 31 March 2006. Summary of changes for version 20060331:
7657 1) ACPI CA Core Subsystem:
7659 Implemented header file support for the following additional ACPI tables:
7660 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
7662 all current and known ACPI tables are now defined in the ACPICA headers
7664 are available for use by device drivers and other software.
7666 Implemented support to allow tables that contain ACPI names with invalid
7667 characters to be loaded. Previously, this would cause the table load to
7668 fail, but since there are several known cases of such tables on existing
7669 machines, this change was made to enable ACPI support for them. Also,
7671 matches the behavior of the Microsoft ACPI implementation.
7673 Fixed a couple regressions introduced during the memory optimization in
7675 20060317 release. The namespace node definition required additional
7676 reorganization and an internal datatype that had been changed to 8-bit
7678 restored to 32-bit. (Valery Podrezov)
7680 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
7681 could be passed through to AcpiOsReleaseObject which is unexpected. Such
7682 null pointers are now trapped and ignored, matching the behavior of the
7683 previous implementation before the deployment of AcpiOsReleaseObject.
7684 (Valery Podrezov, Fiodor Suietov)
7686 Fixed a memory mapping leak during the deletion of a SystemMemory
7688 region where a cached memory mapping was not deleted. This became a
7689 noticeable problem for operation regions that are defined within
7691 used control methods. (Dana Meyers)
7693 Reorganized the ACPI table header files into two main files: one for the
7694 ACPI tables consumed by the ACPICA core, and another for the
7696 ACPI tables that are consumed by the drivers and other software. The
7698 FADT definitions were merged into one common section and three different
7699 tables (ACPI 1.0, 1.0+, and 2.0)
7701 Example Code and Data Size: These are the sizes for the OS-independent
7702 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7703 debug version of the code includes the debug output trace mechanism and
7705 a much larger code and data size.
7708 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7709 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7711 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7712 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7715 2) iASL Compiler/Disassembler and Tools:
7717 Disassembler: Implemented support to decode and format all non-AML ACPI
7718 tables (tables other than DSDTs and SSDTs.) This includes the new tables
7719 added to the ACPICA headers, therefore all current and known ACPI tables
7723 Disassembler: The change to allow ACPI names with invalid characters also
7724 enables the disassembly of such tables. Invalid characters within names
7726 changed to '*' to make the name printable; the iASL compiler will still
7727 generate an error for such names, however, since this is an invalid ACPI
7730 Implemented an option for AcpiXtract (-a) to extract all tables found in
7732 input file. The default invocation extracts only the DSDTs and SSDTs.
7734 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
7735 makefile for the AcpiXtract utility.
7737 ----------------------------------------
7738 17 March 2006. Summary of changes for version 20060317:
7740 1) ACPI CA Core Subsystem:
7742 Implemented the use of a cache object for all internal namespace nodes.
7743 Since there are about 1000 static nodes in a typical system, this will
7744 decrease memory use for cache implementations that minimize per-
7746 overhead (such as a slab allocator.)
7748 Removed the reference count mechanism for internal namespace nodes, since
7750 was deemed unnecessary. This reduces the size of each namespace node by
7751 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
7753 and 32 bytes for the 64-bit case.
7755 Optimized several internal data structures to reduce object size on 64-
7757 platforms by packing data within the 64-bit alignment. This includes the
7758 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
7759 instances corresponding to the namespace objects.
7761 Added two new strings for the predefined _OSI method: "Windows 2001.1
7765 Split the allocation tracking mechanism out to a separate file, from
7766 utalloc.c to uttrack.c. This mechanism appears to be only useful for
7767 application-level code. Kernels may wish to not include uttrack.c in
7770 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
7772 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
7775 Code and Data Size: These are the sizes for the acpica.lib produced by
7777 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7779 driver or OSPM code. The debug version of the code includes the debug
7781 trace mechanism and has a much larger code and data size. Note that these
7782 values will vary depending on the efficiency of the compiler and the
7783 compiler options used during generation.
7786 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7787 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7789 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7790 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7793 2) iASL Compiler/Disassembler and Tools:
7795 Implemented an ANSI C version of the acpixtract utility. This version
7797 automatically extract the DSDT and all SSDTs from the input acpidump text
7798 file and dump the binary output to separate files. It can also display a
7799 summary of the input file including the headers for each table found and
7800 will extract any single ACPI table, with any signature. (See
7801 source/tools/acpixtract)
7803 ----------------------------------------
7804 10 March 2006. Summary of changes for version 20060310:
7806 1) ACPI CA Core Subsystem:
7808 Tagged all external interfaces to the subsystem with the new
7809 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
7811 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
7812 macro. The default definition is NULL.
7814 Added the ACPI_THREAD_ID type for the return value from
7816 This allows the host to define this as necessary to simplify kernel
7817 integration. The default definition is ACPI_NATIVE_UINT.
7819 Fixed two interpreter problems related to error processing, the deletion
7821 objects, and placing invalid pointers onto the internal operator result
7822 stack. BZ 6028, 6151 (Valery Podrezov)
7824 Increased the reference count threshold where a warning is emitted for
7826 reference counts in order to eliminate unnecessary warnings on systems
7828 large namespaces (especially 64-bit.) Increased the value from 0x400 to
7831 Due to universal disagreement as to the meaning of the 'c' in the
7833 function, the ACPI_MEM_CALLOCATE macro has been renamed to
7834 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
7835 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
7838 Code and Data Size: These are the sizes for the acpica.lib produced by
7840 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7842 driver or OSPM code. The debug version of the code includes the debug
7844 trace mechanism and has a much larger code and data size. Note that these
7845 values will vary depending on the efficiency of the compiler and the
7846 compiler options used during generation.
7849 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7850 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7852 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7853 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7856 2) iASL Compiler/Disassembler:
7858 Disassembler: implemented support for symbolic resource descriptor
7859 references. If a CreateXxxxField operator references a fixed offset
7862 resource descriptor, a name is assigned to the descriptor and the offset
7864 translated to the appropriate resource tag and pathname. The addition of
7865 this support brings the disassembled code very close to the original ASL
7866 source code and helps eliminate run-time errors when the disassembled
7868 is modified (and recompiled) in such a way as to invalidate the original
7871 Implemented support for a Descriptor Name as the last parameter to the
7873 Register() macro. This parameter was inadvertently left out of the ACPI
7874 specification, and will be added for ACPI 3.0b.
7876 Fixed a problem where the use of the "_OSI" string (versus the full path
7877 "\_OSI") caused an internal compiler error. ("No back ptr to op")
7879 Fixed a problem with the error message that occurs when an invalid string
7881 used for a _HID object (such as one with an embedded asterisk:
7883 The correct message is now displayed.
7885 ----------------------------------------
7886 17 February 2006. Summary of changes for version 20060217:
7888 1) ACPI CA Core Subsystem:
7890 Implemented a change to the IndexField support to match the behavior of
7892 Microsoft AML interpreter. The value written to the Index register is now
7894 byte offset, no longer an index based upon the width of the Data
7896 This should fix IndexField problems seen on some machines where the Data
7897 register is not exactly one byte wide. The ACPI specification will be
7898 clarified on this point.
7900 Fixed a problem where several resource descriptor types could overrun the
7901 internal descriptor buffer due to size miscalculation: VendorShort,
7902 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
7903 affect all platforms.
7905 Fixed a problem where individual resource descriptors were misaligned
7907 the internal buffer, causing alignment faults on IA64 platforms.
7909 Code and Data Size: These are the sizes for the acpica.lib produced by
7911 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7913 driver or OSPM code. The debug version of the code includes the debug
7915 trace mechanism and has a much larger code and data size. Note that these
7916 values will vary depending on the efficiency of the compiler and the
7917 compiler options used during generation.
7920 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7921 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
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
7927 2) iASL Compiler/Disassembler:
7929 Implemented support for new reserved names: _WDG and _WED are Microsoft
7930 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
7931 defined method (Throttling Depth Limit.)
7933 Fixed a problem where a zero-length VendorShort or VendorLong resource
7934 descriptor was incorrectly emitted as a descriptor of length one.
7936 ----------------------------------------
7937 10 February 2006. Summary of changes for version 20060210:
7939 1) ACPI CA Core Subsystem:
7941 Removed a couple of extraneous ACPI_ERROR messages that appeared during
7942 normal execution. These became apparent after the conversion from
7945 Fixed a problem where the CreateField operator could hang if the BitIndex
7947 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
7949 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
7950 failed with an exception. This also fixes a couple of related RefOf and
7951 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
7953 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
7955 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
7959 Implemented a memory cleanup at the end of the execution of each
7961 of an AML While() loop, preventing the accumulation of outstanding
7963 (Valery Podrezov, BZ 5427)
7965 Eliminated a chunk of duplicate code in the object resolution code.
7969 Fixed several warnings during the 64-bit code generation.
7971 The AcpiSrc source code conversion tool now inserts one line of
7973 after an if() statement that is followed immediately by a comment,
7975 readability of the Linux code.
7977 Code and Data Size: The current and previous library sizes for the core
7978 subsystem are shown below. These are the code and data sizes for the
7979 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7981 values do not include any ACPI driver or OSPM code. The debug version of
7983 code includes the debug output trace mechanism and has a much larger code
7984 and data size. Note that these values will vary depending on the
7986 of the compiler and the compiler options used during generation.
7989 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7990 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7992 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7993 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7996 2) iASL Compiler/Disassembler:
7998 Fixed a problem with the disassembly of a BankField operator with a
8000 expression for the BankValue parameter.
8002 ----------------------------------------
8003 27 January 2006. Summary of changes for version 20060127:
8005 1) ACPI CA Core Subsystem:
8007 Implemented support in the Resource Manager to allow unresolved
8009 references within resource package objects for the _PRT method. This
8011 is in addition to the previously implemented unresolved reference support
8012 within the AML parser. If the interpreter slack mode is enabled, these
8013 unresolved references will be passed through to the caller as a NULL
8017 Implemented and deployed new macros and functions for error and warning
8018 messages across the subsystem. These macros are simpler and generate less
8019 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
8020 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
8021 macros remain defined to allow ACPI drivers time to migrate to the new
8024 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
8026 Acquire/Release Lock OSL interfaces.
8028 Fixed a problem where Alias ASL operators are sometimes not correctly
8029 resolved, in both the interpreter and the iASL compiler.
8031 Fixed several problems with the implementation of the
8032 ConcatenateResTemplate
8033 ASL operator. As per the ACPI specification, zero length buffers are now
8034 treated as a single EndTag. One-length buffers always cause a fatal
8035 exception. Non-zero length buffers that do not end with a full 2-byte
8037 cause a fatal exception.
8039 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
8040 interface. (With assistance from Thomas Renninger)
8042 Code and Data Size: The current and previous library sizes for the core
8043 subsystem are shown below. These are the code and data sizes for the
8044 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8046 values do not include any ACPI driver or OSPM code. The debug version of
8048 code includes the debug output trace mechanism and has a much larger code
8049 and data size. Note that these values will vary depending on the
8051 of the compiler and the compiler options used during generation.
8054 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8055 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8057 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8058 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8061 2) iASL Compiler/Disassembler:
8063 Fixed an internal error that was generated for any forward references to
8067 ----------------------------------------
8068 13 January 2006. Summary of changes for version 20060113:
8070 1) ACPI CA Core Subsystem:
8072 Added 2006 copyright to all module headers and signons. This affects
8073 virtually every file in the ACPICA core subsystem, iASL compiler, and the
8076 Enhanced the ACPICA error reporting in order to simplify user migration
8078 the non-debug version of ACPICA. Replaced all instances of the
8079 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
8081 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
8082 respectively. This preserves all error and warning messages in the non-
8084 version of the ACPICA code (this has been referred to as the "debug lite"
8085 option.) Over 200 cases were converted to create a total of over 380
8086 error/warning messages across the ACPICA code. This increases the code
8088 data size of the default non-debug version of the code somewhat (about
8090 but all error/warning reporting may be disabled if desired (and code
8091 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
8092 configuration option. The size of the debug version of ACPICA remains
8096 Fixed a memory leak within the AML Debugger "Set" command. One object was
8097 not properly deleted for every successful invocation of the command.
8099 Code and Data Size: The current and previous library sizes for the core
8100 subsystem are shown below. These are the code and data sizes for the
8101 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8103 values do not include any ACPI driver or OSPM code. The debug version of
8105 code includes the debug output trace mechanism and has a much larger code
8106 and data size. Note that these values will vary depending on the
8108 of the compiler and the compiler options used during generation.
8111 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8112 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8114 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8115 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8118 2) iASL Compiler/Disassembler:
8120 The compiler now officially supports the ACPI 3.0a specification that was
8121 released on December 30, 2005. (Specification is available at
8124 ----------------------------------------
8125 16 December 2005. Summary of changes for version 20051216:
8127 1) ACPI CA Core Subsystem:
8129 Implemented optional support to allow unresolved names within ASL Package
8130 objects. A null object is inserted in the package when a named reference
8131 cannot be located in the current namespace. Enabled via the interpreter
8132 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
8134 that contain such code.
8136 Implemented an optimization to the initialization sequence that can
8138 boot time. During ACPI device initialization, the _STA method is now run
8140 and only if the _INI method exists. The _STA method is used to determine
8142 the device is present; An _INI can only be run if _STA returns present,
8144 it is a waste of time to run the _STA method if the _INI does not exist.
8145 (Prototype and assistance from Dong Wei)
8147 Implemented use of the C99 uintptr_t for the pointer casting macros if it
8149 available in the current compiler. Otherwise, the default (void *) cast
8153 Fixed some possible memory leaks found within the execution path of the
8154 Break, Continue, If, and CreateField operators. (Valery Podrezov)
8156 Fixed a problem introduced in the 20051202 release where an exception is
8157 generated during method execution if a control method attempts to declare
8160 Moved resource descriptor string constants that are used by both the AML
8161 disassembler and AML debugger to the common utilities directory so that
8162 these components are independent.
8164 Implemented support in the AcpiExec utility (-e switch) to globally
8166 exceptions during control method execution (method is not aborted.)
8168 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
8171 Code and Data Size: The current and previous library sizes for the core
8172 subsystem are shown below. These are the code and data sizes for the
8173 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8175 values do not include any ACPI driver or OSPM code. The debug version of
8177 code includes the debug output trace mechanism and has a much larger code
8178 and data size. Note that these values will vary depending on the
8180 of the compiler and the compiler options used during generation.
8183 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8184 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8186 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8187 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8190 2) iASL Compiler/Disassembler:
8192 Fixed a problem where a CPU stack overflow fault could occur if a
8194 method call was made from within a Return statement.
8196 ----------------------------------------
8197 02 December 2005. Summary of changes for version 20051202:
8199 1) ACPI CA Core Subsystem:
8201 Modified the parsing of control methods to no longer create namespace
8202 objects during the first pass of the parse. Objects are now created only
8203 during the execute phase, at the moment the namespace creation operator
8205 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8207 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8208 reentrant control methods are protected by an AML mutex. The mutex will
8210 correctly block multiple threads from attempting to create the same
8214 Increased the number of available Owner Ids for namespace object tracking
8215 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8217 some machines with a large number of ACPI tables (either static or
8220 Fixed a problem with the AcpiExec utility where a fault could occur when
8222 -b switch (batch mode) is used.
8224 Enhanced the namespace dump routine to output the owner ID for each
8227 Code and Data Size: The current and previous library sizes for the core
8228 subsystem are shown below. These are the code and data sizes for the
8229 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8231 values do not include any ACPI driver or OSPM code. The debug version of
8233 code includes the debug output trace mechanism and has a much larger code
8234 and data size. Note that these values will vary depending on the
8236 of the compiler and the compiler options used during generation.
8239 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8240 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8242 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8243 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8246 2) iASL Compiler/Disassembler:
8248 Fixed a parse error during compilation of certain Switch/Case constructs.
8250 simplify the parse, the grammar now allows for multiple Default
8252 and this error is now detected and flagged during the analysis phase.
8254 Disassembler: The disassembly now includes the contents of the original
8255 table header within a comment at the start of the file. This includes the
8256 name and version of the original ASL compiler.
8258 ----------------------------------------
8259 17 November 2005. Summary of changes for version 20051117:
8261 1) ACPI CA Core Subsystem:
8263 Fixed a problem in the AML parser where the method thread count could be
8264 decremented below zero if any errors occurred during the method parse
8266 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8268 This also fixed a related regression with the mechanism that detects and
8269 corrects methods that cannot properly handle reentrancy (related to the
8270 deployment of the new OwnerId mechanism.)
8272 Eliminated the pre-parsing of control methods (to detect errors) during
8273 table load. Related to the problem above, this was causing unwind issues
8275 any errors occurred during the parse, and it seemed to be overkill. A
8277 load should not be aborted if there are problems with any single control
8278 method, thus rendering this feature rather pointless.
8280 Fixed a problem with the new table-driven resource manager where an
8282 buffer overflow could occur for small resource templates.
8284 Implemented a new external interface, AcpiGetVendorResource. This
8286 will find and return a vendor-defined resource descriptor within a _CRS
8288 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8291 Removed the length limit (200) on string objects as per the upcoming ACPI
8292 3.0A specification. This affects the following areas of the interpreter:
8294 any implicit conversion of a Buffer to a String, 2) a String object
8296 of the ASL Concatentate operator, 3) the String object result of the ASL
8299 Fixed a problem in the Windows OS interface layer (OSL) where a
8301 on a semaphore object would incorrectly timeout. This allows the
8302 multithreading features of the AcpiExec utility to work properly under
8305 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8306 the recently added file named "utresrc.c".
8308 Code and Data Size: The current and previous library sizes for the core
8309 subsystem are shown below. These are the code and data sizes for the
8310 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8312 values do not include any ACPI driver or OSPM code. The debug version of
8314 code includes the debug output trace mechanism and has a much larger code
8315 and data size. Note that these values will vary depending on the
8317 of the compiler and the compiler options used during generation.
8320 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8321 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8323 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8324 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8327 2) iASL Compiler/Disassembler:
8329 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8330 specification. For the iASL compiler, this means that string literals
8332 the source ASL can be of any length.
8334 Enhanced the listing output to dump the AML code for resource descriptors
8335 immediately after the ASL code for each descriptor, instead of in a block
8337 the end of the entire resource template.
8339 Enhanced the compiler debug output to dump the entire original parse tree
8340 constructed during the parse phase, before any transforms are applied to
8342 tree. The transformed tree is dumped also.
8344 ----------------------------------------
8345 02 November 2005. Summary of changes for version 20051102:
8347 1) ACPI CA Core Subsystem:
8349 Modified the subsystem initialization sequence to improve GPE support.
8351 GPE initialization has been split into two parts in order to defer
8353 of the _PRW methods (Power Resources for Wake) until after the hardware
8355 fully initialized and the SCI handler is installed. This allows the _PRW
8356 methods to access fields protected by the Global Lock. This will fix
8358 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8360 Converted the ACPI internal object disassemble and display code within
8362 AML debugger to fully table-driven operation, reducing code size and
8363 increasing maintainability.
8365 Fixed a regression with the ConcatenateResTemplate() ASL operator
8367 in the 20051021 release.
8369 Implemented support for "local" internal ACPI object types within the
8370 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8371 These local types include RegionFields, BankFields, IndexFields, Alias,
8375 Moved common AML resource handling code into a new file, "utresrc.c".
8377 code is shared by both the Resource Manager and the AML Debugger.
8379 Code and Data Size: The current and previous library sizes for the core
8380 subsystem are shown below. These are the code and data sizes for the
8381 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8383 values do not include any ACPI driver or OSPM code. The debug version of
8385 code includes the debug output trace mechanism and has a much larger code
8386 and data size. Note that these values will vary depending on the
8388 of the compiler and the compiler options used during generation.
8391 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8392 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
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
8398 2) iASL Compiler/Disassembler:
8400 Fixed a problem with very large initializer lists (more than 4000
8402 for both Buffer and Package objects where the parse stack could overflow.
8404 Enhanced the pre-compile source code scan for non-ASCII characters to
8406 characters within comment fields. The scan is now always performed and is
8408 longer optional, detecting invalid characters within a source file
8409 immediately rather than during the parse phase or later.
8411 Enhanced the ASL grammar definition to force early reductions on all
8413 style grammar elements so that the overall parse stack usage is greatly
8414 reduced. This should improve performance and reduce the possibility of
8418 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8420 with the addition of a %expected statement, the compiler generates from
8421 source with no warnings.
8423 Fixed a possible segment fault in the disassembler if the input filename
8424 does not contain a "dot" extension (Thomas Renninger).
8426 ----------------------------------------
8427 21 October 2005. Summary of changes for version 20051021:
8429 1) ACPI CA Core Subsystem:
8431 Implemented support for the EM64T and other x86-64 processors. This
8432 essentially entails recognizing that these processors support non-aligned
8433 memory transfers. Previously, all 64-bit processors were assumed to lack
8434 hardware support for non-aligned transfers.
8436 Completed conversion of the Resource Manager to nearly full table-driven
8437 operation. Specifically, the resource conversion code (convert AML to
8438 internal format and the reverse) and the debug code to dump internal
8439 resource descriptors are fully table-driven, reducing code and data size
8441 improving maintainability.
8443 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8445 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8447 Alexey Starikovskiy)
8449 Implemented support within the resource conversion code for the Type-
8450 Specific byte within the various ACPI 3.0 *WordSpace macros.
8452 Fixed some issues within the resource conversion code for the type-
8454 flags for both Memory and I/O address resource descriptors. For Memory,
8455 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8456 TTP flags into two separate fields.
8458 Code and Data Size: The current and previous library sizes for the core
8459 subsystem are shown below. These are the code and data sizes for the
8460 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8462 values do not include any ACPI driver or OSPM code. The debug version of
8464 code includes the debug output trace mechanism and has a much larger code
8465 and data size. Note that these values will vary depending on the
8467 of the compiler and the compiler options used during generation.
8470 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8471 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8473 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8474 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8478 2) iASL Compiler/Disassembler:
8480 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8482 corresponding ResourceSource string was not also present in a resource
8483 descriptor declaration. This restriction caused problems with existing
8484 AML/ASL code that includes the Index byte without the string. When such
8486 was disassembled, it could not be compiled without modification. Further,
8487 the modified code created a resource template with a different size than
8489 original, breaking code that used fixed offsets into the resource
8493 Removed a recent feature of the disassembler to ignore a lone
8495 byte. This byte is now emitted if present so that the exact AML can be
8496 reproduced when the disassembled code is recompiled.
8498 Improved comments and text alignment for the resource descriptor code
8499 emitted by the disassembler.
8501 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8503 Register() resource descriptor.
8505 ----------------------------------------
8506 30 September 2005. Summary of changes for version 20050930:
8508 1) ACPI CA Core Subsystem:
8510 Completed a major overhaul of the Resource Manager code - specifically,
8511 optimizations in the area of the AML/internal resource conversion code.
8513 code has been optimized to simplify and eliminate duplicated code, CPU
8515 use has been decreased by optimizing function parameters and local
8516 variables, and naming conventions across the manager have been
8518 for clarity and ease of maintenance (this includes function, parameter,
8519 variable, and struct/typedef names.) The update may force changes in some
8520 driver code, depending on how resources are handled by the host OS.
8522 All Resource Manager dispatch and information tables have been moved to a
8523 single location for clarity and ease of maintenance. One new file was
8524 created, named "rsinfo.c".
8526 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8527 guarantee that the argument is not evaluated twice, making them less
8529 to macro side-effects. However, since there exists the possibility of
8530 additional stack use if a particular compiler cannot optimize them (such
8532 in the debug generation case), the original macros are optionally
8534 Note that some invocations of the return_VALUE macro may now cause size
8535 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8537 eliminate these. (From Randy Dunlap)
8539 Implemented a new mechanism to enable debug tracing for individual
8541 methods. A new external interface, AcpiDebugTrace, is provided to enable
8542 this mechanism. The intent is to allow the host OS to easily enable and
8543 disable tracing for problematic control methods. This interface can be
8544 easily exposed to a user or debugger interface if desired. See the file
8545 psxface.c for details.
8547 AcpiUtCallocate will now return a valid pointer if a length of zero is
8548 specified - a length of one is used and a warning is issued. This matches
8549 the behavior of AcpiUtAllocate.
8551 Code and Data Size: The current and previous library sizes for the core
8552 subsystem are shown below. These are the code and data sizes for the
8553 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8555 values do not include any ACPI driver or OSPM code. The debug version of
8557 code includes the debug output trace mechanism and has a much larger code
8558 and data size. Note that these values will vary depending on the
8560 of the compiler and the compiler options used during generation.
8563 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8564 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8566 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8567 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8570 2) iASL Compiler/Disassembler:
8572 A remark is issued if the effective compile-time length of a package or
8573 buffer is zero. Previously, this was a warning.
8575 ----------------------------------------
8576 16 September 2005. Summary of changes for version 20050916:
8578 1) ACPI CA Core Subsystem:
8580 Fixed a problem within the Resource Manager where support for the Generic
8581 Register descriptor was not fully implemented. This descriptor is now
8583 recognized, parsed, disassembled, and displayed.
8585 Completely restructured the Resource Manager code to utilize table-driven
8586 dispatch and lookup, eliminating many of the large switch() statements.
8588 reduces overall subsystem code size and code complexity. Affects the
8589 resource parsing and construction, disassembly, and debug dump output.
8591 Cleaned up and restructured the debug dump output for all resource
8592 descriptors. Improved readability of the output and reduced code size.
8594 Fixed a problem where changes to internal data structures caused the
8595 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8597 Code and Data Size: The current and previous library sizes for the core
8598 subsystem are shown below. These are the code and data sizes for the
8599 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8601 values do not include any ACPI driver or OSPM code. The debug version of
8603 code includes the debug output trace mechanism and has a much larger code
8604 and data size. Note that these values will vary depending on the
8606 of the compiler and the compiler options used during generation.
8609 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8610 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8612 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8613 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8616 2) iASL Compiler/Disassembler:
8618 Updated the disassembler to automatically insert an EndDependentFn()
8620 into the ASL stream if this macro is missing in the original AML code,
8621 simplifying compilation of the resulting ASL module.
8623 Fixed a problem in the disassembler where a disassembled ResourceSource
8624 string (within a large resource descriptor) was not surrounded by quotes
8626 not followed by a comma, causing errors when the resulting ASL module was
8627 compiled. Also, escape sequences within a ResourceSource string are now
8628 handled correctly (especially "\\")
8630 ----------------------------------------
8631 02 September 2005. Summary of changes for version 20050902:
8633 1) ACPI CA Core Subsystem:
8635 Fixed a problem with the internal Owner ID allocation and deallocation
8636 mechanisms for control method execution and recursive method invocation.
8637 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
8638 messages seen on some systems. Recursive method invocation depth is
8639 currently limited to 255. (Alexey Starikovskiy)
8641 Completely eliminated all vestiges of support for the "module-level
8642 executable code" until this support is fully implemented and debugged.
8644 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
8645 some systems that invoke this support.
8647 Fixed a problem within the resource manager code where the transaction
8649 for a 64-bit address descriptor were handled incorrectly in the type-
8652 Consolidated duplicate code within the address descriptor resource
8654 code, reducing overall subsystem code size.
8656 Fixed a fault when using the AML debugger "disassemble" command to
8657 disassemble individual control methods.
8659 Removed references to the "release_current" directory within the Unix
8662 Code and Data Size: The current and previous core subsystem library sizes
8663 are shown below. These are the code and data sizes for the acpica.lib
8664 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
8665 include any ACPI driver or OSPM code. The debug version of the code
8667 the debug output trace mechanism and has a much larger code and data
8669 Note that these values will vary depending on the efficiency of the
8671 and the compiler options used during generation.
8674 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8675 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8677 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8678 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8681 2) iASL Compiler/Disassembler:
8683 Implemented an error check for illegal duplicate values in the interrupt
8685 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
8688 Implemented error checking for the Irq() and IrqNoFlags() macros to
8690 too many values in the interrupt list (16 max) and invalid values in the
8693 The maximum length string literal within an ASL file is now restricted to
8694 200 characters as per the ACPI specification.
8696 Fixed a fault when using the -ln option (generate namespace listing).
8698 Implemented an error check to determine if a DescriptorName within a
8699 resource descriptor has already been used within the current scope.
8701 ----------------------------------------
8702 15 August 2005. Summary of changes for version 20050815:
8704 1) ACPI CA Core Subsystem:
8706 Implemented a full bytewise compare to determine if a table load request
8708 attempting to load a duplicate table. The compare is performed if the
8710 signatures and table lengths match. This will allow different tables with
8711 the same OEM Table ID and revision to be loaded - probably against the
8713 specification, but discovered in the field nonetheless.
8715 Added the changes.txt logfile to each of the zipped release packages.
8717 Code and Data Size: Current and previous core subsystem library sizes are
8718 shown below. These are the code and data sizes for the acpica.lib
8720 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8721 any ACPI driver or OSPM code. The debug version of the code includes the
8722 debug output trace mechanism and has a much larger code and data size.
8724 that these values will vary depending on the efficiency of the compiler
8726 the compiler options used during generation.
8729 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8730 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8732 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8733 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8736 2) iASL Compiler/Disassembler:
8738 Fixed a problem where incorrect AML code could be generated for Package
8739 objects if optimization is disabled (via the -oa switch).
8741 Fixed a problem with where incorrect AML code is generated for variable-
8742 length packages when the package length is not specified and the number
8744 initializer values is greater than 255.
8747 ----------------------------------------
8748 29 July 2005. Summary of changes for version 20050729:
8750 1) ACPI CA Core Subsystem:
8752 Implemented support to ignore an attempt to install/load a particular
8754 table more than once. Apparently there exists BIOS code that repeatedly
8755 attempts to load the same SSDT upon certain events. With assistance from
8756 Venkatesh Pallipadi.
8758 Restructured the main interface to the AML parser in order to correctly
8759 handle all exceptional conditions. This will prevent leakage of the
8761 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
8763 machines. With assistance from Alexey Starikovskiy.
8765 Support for "module level code" has been disabled in this version due to
8767 number of issues that have appeared on various machines. The support can
8769 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
8770 compilation. When the issues are fully resolved, the code will be enabled
8774 Modified the internal functions for debug print support to define the
8775 FunctionName parameter as a (const char *) for compatibility with
8777 built-in macros such as __FUNCTION__, etc.
8779 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
8781 Implemented support to display an object count summary for the AML
8783 commands Object and Methods.
8785 Code and Data Size: Current and previous core subsystem library sizes are
8786 shown below. These are the code and data sizes for the acpica.lib
8788 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8789 any ACPI driver or OSPM code. The debug version of the code includes the
8790 debug output trace mechanism and has a much larger code and data size.
8792 that these values will vary depending on the efficiency of the compiler
8794 the compiler options used during generation.
8797 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8798 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8800 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8801 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8804 2) iASL Compiler/Disassembler:
8806 Fixed a regression that appeared in the 20050708 version of the compiler
8807 where an error message was inadvertently emitted for invocations of the
8809 reserved control method.
8811 ----------------------------------------
8812 08 July 2005. Summary of changes for version 20050708:
8814 1) ACPI CA Core Subsystem:
8816 The use of the CPU stack in the debug version of the subsystem has been
8817 considerably reduced. Previously, a debug structure was declared in every
8818 function that used the debug macros. This structure has been removed in
8819 favor of declaring the individual elements as parameters to the debug
8820 functions. This reduces the cumulative stack use during nested execution
8822 ACPI function calls at the cost of a small increase in the code size of
8824 debug version of the subsystem. With assistance from Alexey Starikovskiy
8828 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
8829 headers to define a macro that will return the current function name at
8830 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
8832 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
8833 compiler-dependent header, the function name is saved on the CPU stack
8835 pointer per function.) This mechanism is used because apparently there
8836 exists no standard ANSI-C defined macro that that returns the function
8839 Redesigned and reimplemented the "Owner ID" mechanism used to track
8840 namespace objects created/deleted by ACPI tables and control method
8841 execution. A bitmap is now used to allocate and free the IDs, thus
8843 the wraparound problem present in the previous implementation. The size
8845 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
8848 Removed the UINT32_BIT and UINT16_BIT types that were used for the
8850 flag definitions within the headers for the predefined ACPI tables. These
8851 have been replaced by UINT8_BIT in order to increase the code portability
8853 the subsystem. If the use of UINT8 remains a problem, we may be forced to
8854 eliminate bitfields entirely because of a lack of portability.
8856 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
8858 is a frequently used function and this improvement increases the
8860 of the entire subsystem (Alexey Starikovskiy).
8862 Fixed several possible memory leaks and the inverse - premature object
8863 deletion (Alexey Starikovskiy).
8865 Code and Data Size: Current and previous core subsystem library sizes are
8866 shown below. These are the code and data sizes for the acpica.lib
8868 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8869 any ACPI driver or OSPM code. The debug version of the code includes the
8870 debug output trace mechanism and has a much larger code and data size.
8872 that these values will vary depending on the efficiency of the compiler
8874 the compiler options used during generation.
8877 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8878 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8880 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8881 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8883 ----------------------------------------
8884 24 June 2005. Summary of changes for version 20050624:
8886 1) ACPI CA Core Subsystem:
8888 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
8889 the host-defined cache object. This allows the OSL implementation to
8891 and type this object in any manner desired, simplifying the OSL
8892 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
8893 Linux, and should be defined in the OS-specific header file for other
8894 operating systems as required.
8896 Changed the interface to AcpiOsAcquireObject to directly return the
8897 requested object as the function return (instead of ACPI_STATUS.) This
8898 change was made for performance reasons, since this is the purpose of the
8899 interface in the first place. AcpiOsAcquireObject is now similar to the
8900 AcpiOsAllocate interface.
8902 Implemented a new AML debugger command named Businfo. This command
8904 information about all devices that have an associate _PRT object. The
8906 _HID, _UID, and _CID are displayed for these devices.
8908 Modified the initialization sequence in AcpiInitializeSubsystem to call
8910 OSL interface AcpiOslInitialize first, before any local initialization.
8912 change was required because the global initialization now calls OSL
8915 Enhanced the Dump command to display the entire contents of Package
8917 (including all sub-objects and their values.)
8919 Restructured the code base to split some files because of size and/or
8920 because the code logically belonged in a separate file. New files are
8922 below. All makefiles and project files included in the ACPI CA release
8925 utilities/utcache.c /* Local cache interfaces */
8926 utilities/utmutex.c /* Local mutex support */
8927 utilities/utstate.c /* State object support */
8928 interpreter/parser/psloop.c /* Main AML parse loop */
8930 Code and Data Size: Current and previous core subsystem library sizes are
8931 shown below. These are the code and data sizes for the acpica.lib
8933 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8934 any ACPI driver or OSPM code. The debug version of the code includes the
8935 debug output trace mechanism and has a much larger code and data size.
8937 that these values will vary depending on the efficiency of the compiler
8939 the compiler options used during generation.
8942 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8943 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8945 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8946 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8949 2) iASL Compiler/Disassembler:
8951 Fixed a regression introduced in version 20050513 where the use of a
8953 object within a Case() statement caused a compile time exception. The
8954 original behavior has been restored (a Match() operator is emitted.)
8956 ----------------------------------------
8957 17 June 2005. Summary of changes for version 20050617:
8959 1) ACPI CA Core Subsystem:
8961 Moved the object cache operations into the OS interface layer (OSL) to
8963 the host OS to handle these operations if desired (for example, the Linux
8964 OSL will invoke the slab allocator). This support is optional; the
8966 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
8968 code in the ACPI CA core. The new OSL interfaces are shown below. See
8969 utalloc.c for an example implementation, and acpiosxf.h for the exact
8970 interface definitions. With assistance from Alexey Starikovskiy.
8977 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
8979 and restore a flags parameter. This fits better with many OS lock models.
8980 Note: the current execution state (interrupt handler or not) is no longer
8981 passed to these interfaces. If necessary, the OSL must determine this
8983 by itself, a simple and fast operation. With assistance from Alexey
8986 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
8987 present if the revision of the RSDP was 2 or greater. According to the
8989 specification, the XSDT is optional in all cases, and the table manager
8990 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
8991 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
8995 Fixed an interpreter problem with the Mid() operator in the case of an
8997 string where the resulting output string is of zero length. It now
8999 returns a valid, null terminated string object instead of a string object
9000 with a null pointer.
9002 Fixed a problem with the control method argument handling to allow a
9004 to an Arg object that already contains an object of type Device. The
9006 object is now correctly overwritten. Previously, an error was returned.
9009 Enhanced the debugger Find command to emit object values in addition to
9011 found object pathnames. The output format is the same as the dump
9015 Enhanced the debugger Set command. It now has the ability to set the
9017 of any Named integer object in the namespace (Previously, only method
9019 and args could be set.)
9021 Code and Data Size: Current and previous core subsystem library sizes are
9022 shown below. These are the code and data sizes for the acpica.lib
9024 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9025 any ACPI driver or OSPM code. The debug version of the code includes the
9026 debug output trace mechanism and has a much larger code and data size.
9028 that these values will vary depending on the efficiency of the compiler
9030 the compiler options used during generation.
9033 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9034 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9036 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9037 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9040 2) iASL Compiler/Disassembler:
9042 Fixed a regression in the disassembler where if/else/while constructs
9044 output incorrectly. This problem was introduced in the previous release
9045 (20050526). This problem also affected the single-step disassembly in the
9048 Fixed a problem where compiling the reserved _OSI method would randomly
9050 rarely) produce compile errors.
9052 Enhanced the disassembler to emit compilable code in the face of
9054 AML resource descriptors. If the optional ResourceSourceIndex is present,
9055 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
9056 disassembly. Otherwise, the resulting code cannot be compiled without
9059 ----------------------------------------
9060 26 May 2005. Summary of changes for version 20050526:
9062 1) ACPI CA Core Subsystem:
9064 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
9065 the module level (not within a control method.) These opcodes are
9067 exactly once at the time the table is loaded. This type of code was legal
9069 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
9071 order to provide backwards compatibility with earlier BIOS
9073 This eliminates the "Encountered executable code at module level" warning
9074 that was previously generated upon detection of such code.
9076 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
9077 inadvertently be generated during the lookup of namespace objects in the
9078 second pass parse of ACPI tables and control methods. It appears that
9080 problem could occur during the resolution of forward references to
9084 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
9085 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
9086 allows the deadlock detection debug code to be compiled out in the normal
9087 case, improving mutex performance (and overall subsystem performance)
9090 Implemented a handful of miscellaneous fixes for possible memory leaks on
9091 error conditions and error handling control paths. These fixes were
9092 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
9094 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
9096 to prevent a fault in this error case.
9098 Code and Data Size: Current and previous core subsystem library sizes are
9099 shown below. These are the code and data sizes for the acpica.lib
9101 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9102 any ACPI driver or OSPM code. The debug version of the code includes the
9103 debug output trace mechanism and has a much larger code and data size.
9105 that these values will vary depending on the efficiency of the compiler
9107 the compiler options used during generation.
9110 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9111 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9113 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9114 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9117 2) iASL Compiler/Disassembler:
9119 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
9120 the module level (not within a control method.) These operators will be
9121 executed once at the time the table is loaded. This type of code was
9123 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
9124 compiler in order to provide backwards compatibility with earlier BIOS
9128 The ACPI integer width (specified via the table revision ID or the -r
9129 override, 32 or 64 bits) is now used internally during compile-time
9131 folding to ensure that constants are truncated to 32 bits if necessary.
9132 Previously, the revision ID value was only emitted in the AML table
9135 An error message is now generated for the Mutex and Method operators if
9137 SyncLevel parameter is outside the legal range of 0 through 15.
9139 Fixed a problem with the Method operator ParameterTypes list handling
9141 3.0). Previously, more than 2 types or 2 arguments generated a syntax
9143 The actual underlying implementation of method argument typechecking is
9144 still under development, however.
9146 ----------------------------------------
9147 13 May 2005. Summary of changes for version 20050513:
9149 1) ACPI CA Core Subsystem:
9151 Implemented support for PCI Express root bridges -- added support for
9153 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
9155 The interpreter now automatically truncates incoming 64-bit constants to
9157 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
9159 also affects the iASL compiler constant folding. (Note: as per below, the
9160 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
9162 Fixed a problem where string and buffer objects with "static" pointers
9163 (pointers to initialization data within an ACPI table) were not handled
9164 consistently. The internal object copy operation now always copies the
9166 to a newly allocated buffer, regardless of whether the source object is
9169 Fixed a problem with the FromBCD operator where an implicit result
9170 conversion was improperly performed while storing the result to the
9172 operand. Since this is an "explicit conversion" operator, the implicit
9173 conversion should never be performed on the output.
9175 Fixed a problem with the CopyObject operator where a copy to an existing
9176 named object did not always completely overwrite the existing object
9178 at name. Specifically, a buffer-to-buffer copy did not delete the
9182 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9184 structs for consistency.
9186 Code and Data Size: Current and previous core subsystem library sizes are
9187 shown below. These are the code and data sizes for the acpica.lib
9189 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9190 any ACPI driver or OSPM code. The debug version of the code includes the
9191 debug output trace mechanism and has a much larger code and data size.
9193 that these values will vary depending on the efficiency of the compiler
9195 the compiler options used during generation.
9198 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9199 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9200 Current Release: (Same sizes)
9201 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9202 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9205 2) iASL Compiler/Disassembler:
9207 The compiler now emits a warning if an attempt is made to generate a 64-
9209 integer constant from within a 32-bit ACPI table (Revision < 2). The
9211 is truncated to 32 bits.
9213 Fixed a problem with large package objects: if the static length of the
9214 package is greater than 255, the "variable length package" opcode is
9215 emitted. Previously, this caused an error. This requires an update to the
9216 ACPI spec, since it currently (incorrectly) states that packages larger
9218 255 elements are not allowed.
9220 The disassembler now correctly handles variable length packages and
9222 larger than 255 elements.
9224 ----------------------------------------
9225 08 April 2005. Summary of changes for version 20050408:
9227 1) ACPI CA Core Subsystem:
9229 Fixed three cases in the interpreter where an "index" argument to an ASL
9230 function was still (internally) 32 bits instead of the required 64 bits.
9231 This was the Index argument to the Index, Mid, and Match operators.
9233 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9235 not a POSIX-defined function and not present in most kernel-level C
9236 libraries. All references to the C library strupr function have been
9240 Completed the deployment of static functions/prototypes. All prototypes
9242 the static attribute have been moved from the headers to the owning C
9245 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9246 utility). This option allows the utility to extract individual ACPI
9248 from the output of AcpiDmp. It provides the same functionality of the
9249 acpixtract.pl perl script without the worry of setting the correct perl
9250 options. AcpiBin runs on Windows and has not yet been generated/validated
9252 the Linux/Unix environment (but should be soon).
9254 Updated and fixed the table dump option for AcpiBin (-d). This option
9255 converts a single ACPI table to a hex/ascii file, similar to the output
9259 Code and Data Size: Current and previous core subsystem library sizes are
9260 shown below. These are the code and data sizes for the acpica.lib
9262 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9263 any ACPI driver or OSPM code. The debug version of the code includes the
9264 debug output trace mechanism and has a much larger code and data size.
9266 that these values will vary depending on the efficiency of the compiler
9268 the compiler options used during generation.
9271 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9272 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9274 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9275 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9278 2) iASL Compiler/Disassembler:
9280 Disassembler fix: Added a check to ensure that the table length found in
9282 ACPI table header within the input file is not longer than the actual
9284 file size. This indicates some kind of file or table corruption.
9286 ----------------------------------------
9287 29 March 2005. Summary of changes for version 20050329:
9289 1) ACPI CA Core Subsystem:
9291 An error is now generated if an attempt is made to create a Buffer Field
9293 length zero (A CreateField with a length operand of zero.)
9295 The interpreter now issues a warning whenever executable code at the
9297 level is detected during ACPI table load. This will give some idea of the
9298 prevalence of this type of code.
9300 Implemented support for references to named objects (other than control
9301 methods) within package objects.
9303 Enhanced package object output for the debug object. Package objects are
9305 completely dumped, showing all elements.
9307 Enhanced miscellaneous object output for the debug object. Any object can
9308 now be written to the debug object (for example, a device object can be
9309 written, and the type of the object will be displayed.)
9311 The "static" qualifier has been added to all local functions across both
9313 core subsystem and the iASL compiler.
9315 The number of "long" lines (> 80 chars) within the source has been
9316 significantly reduced, by about 1/3.
9318 Cleaned up all header files to ensure that all CA/iASL functions are
9319 prototyped (even static functions) and the formatting is consistent.
9321 Two new header files have been added, acopcode.h and acnames.h.
9323 Removed several obsolete functions that were no longer used.
9325 Code and Data Size: Current and previous core subsystem library sizes are
9326 shown below. These are the code and data sizes for the acpica.lib
9328 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9329 any ACPI driver or OSPM code. The debug version of the code includes the
9330 debug output trace mechanism and has a much larger code and data size.
9332 that these values will vary depending on the efficiency of the compiler
9334 the compiler options used during generation.
9337 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9338 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9340 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9341 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9345 2) iASL Compiler/Disassembler:
9347 Fixed a problem with the resource descriptor generation/support. For the
9348 ResourceSourceIndex and the ResourceSource fields, both must be present,
9350 both must be not present - can't have one without the other.
9352 The compiler now returns non-zero from the main procedure if any errors
9354 occurred during the compilation.
9357 ----------------------------------------
9358 09 March 2005. Summary of changes for version 20050309:
9360 1) ACPI CA Core Subsystem:
9362 The string-to-buffer implicit conversion code has been modified again
9364 a change to the ACPI specification. In order to match the behavior of
9366 other major ACPI implementation, the target buffer is no longer truncated
9368 the source string is smaller than an existing target buffer. This change
9369 requires an update to the ACPI spec, and should eliminate the recent
9370 AE_AML_BUFFER_LIMIT issues.
9372 The "implicit return" support was rewritten to a new algorithm that
9374 the general case. Rather than attempt to determine when a method is about
9376 exit, the result of every ASL operator is saved momentarily until the
9378 next ASL operator is executed. Therefore, no matter how the method exits,
9379 there will always be a saved implicit return value. This feature is only
9380 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9382 AE_AML_NO_RETURN_VALUE errors when enabled.
9384 Implemented implicit conversion support for the predicate (operand) of
9386 If, Else, and While operators. String and Buffer arguments are
9388 converted to Integers.
9390 Changed the string-to-integer conversion behavior to match the new ACPI
9391 errata: "If no integer object exists, a new integer is created. The ASCII
9392 string is interpreted as a hexadecimal constant. Each string character is
9393 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9394 with the first character as the most significant digit, and ending with
9396 first non-hexadecimal character or end-of-string." This means that the
9398 non-hex character terminates the conversion and this is the code that was
9401 Fixed a problem where the ObjectType operator would fail (fault) when
9403 on an Index of a Package which pointed to a null package element. The
9404 operator now properly returns zero (Uninitialized) in this case.
9406 Fixed a problem where the While operator used excessive memory by not
9407 properly popping the result stack during execution. There was no memory
9409 after execution, however. (Code provided by Valery Podrezov.)
9411 Fixed a problem where references to control methods within Package
9413 caused the method to be invoked, instead of producing a reference object
9414 pointing to the method.
9416 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9418 improve performance and reduce code size. (Code provided by Alexey
9421 Code and Data Size: Current and previous core subsystem library sizes are
9422 shown below. These are the code and data sizes for the acpica.lib
9424 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9425 any ACPI driver or OSPM code. The debug version of the code includes the
9426 debug output trace mechanism and has a much larger code and data size.
9428 that these values will vary depending on the efficiency of the compiler
9430 the compiler options used during generation.
9433 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9434 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9436 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9437 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9440 2) iASL Compiler/Disassembler:
9442 Fixed a problem with the Return operator with no arguments. Since the AML
9443 grammar for the byte encoding requires an operand for the Return opcode,
9445 compiler now emits a Return(Zero) for this case. An ACPI specification
9446 update has been written for this case.
9448 For tables other than the DSDT, namepath optimization is automatically
9449 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9451 compiler has no knowledge of where, and thus cannot optimize namepaths.
9453 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9454 inadvertently omitted from the ACPI specification, and will require an
9457 The source file scan for ASCII characters is now optional (-a). This
9459 was made because some vendors place non-ascii characters within comments.
9460 However, the scan is simply a brute-force byte compare to ensure all
9461 characters in the file are in the range 0x00 to 0x7F.
9463 Fixed a problem with the CondRefOf operator where the compiler was
9464 inappropriately checking for the existence of the target. Since the point
9466 the operator is to check for the existence of the target at run-time, the
9467 compiler no longer checks for the target existence.
9469 Fixed a problem where errors generated from the internal AML interpreter
9470 during constant folding were not handled properly, causing a fault.
9472 Fixed a problem with overly aggressive range checking for the Stall
9473 operator. The valid range (max 255) is now only checked if the operand is
9475 type Integer. All other operand types cannot be statically checked.
9477 Fixed a problem where control method references within the RefOf,
9479 and ObjectType operators were not treated properly. They are now treated
9481 actual references, not method invocations.
9483 Fixed and enhanced the "list namespace" option (-ln). This option was
9485 a number of releases ago.
9487 Improved error handling for the Field, IndexField, and BankField
9489 The compiler now cleanly reports and recovers from errors in the field
9490 component (FieldUnit) list.
9492 Fixed a disassembler problem where the optional ResourceDescriptor fields
9493 TRS and TTP were not always handled correctly.
9495 Disassembler - Comments in output now use "//" instead of "/*"
9497 ----------------------------------------
9498 28 February 2005. Summary of changes for version 20050228:
9500 1) ACPI CA Core Subsystem:
9502 Fixed a problem where the result of an Index() operator (an object
9503 reference) must increment the reference count on the target object for
9505 life of the object reference.
9507 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9508 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9510 resource descriptors.
9512 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9513 Space Descriptor" string, indicating interpreter support for the
9517 Implemented header support for the new ACPI 3.0 FADT flag bits.
9519 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9521 status/enable registers.
9523 Updated header support for the MADT processor local Apic struct and MADT
9524 platform interrupt source struct for new ACPI 3.0 fields.
9526 Implemented header support for the SRAT and SLIT ACPI tables.
9528 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9532 Code and Data Size: Current and previous core subsystem library sizes are
9533 shown below. These are the code and data sizes for the acpica.lib
9535 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9536 any ACPI driver or OSPM code. The debug version of the code includes the
9537 debug output trace mechanism and has a much larger code and data size.
9539 that these values will vary depending on the efficiency of the compiler
9541 the compiler options used during generation.
9544 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9545 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9547 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9548 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9551 2) iASL Compiler/Disassembler:
9553 Fixed a problem with the internal 64-bit String-to-integer conversion
9555 strings less than two characters long.
9557 Fixed a problem with constant folding where the result of the Index()
9558 operator can not be considered a constant. This means that Index() cannot
9560 a type3 opcode and this will require an update to the ACPI specification.
9562 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9563 descriptor fields. These fields were inadvertently ignored and not output
9565 the disassembly of the resource descriptor.
9568 ----------------------------------------
9569 11 February 2005. Summary of changes for version 20050211:
9571 1) ACPI CA Core Subsystem:
9573 Implemented ACPI 3.0 support for implicit conversion within the Match()
9574 operator. MatchObjects can now be of type integer, buffer, or string
9576 of just type integer. Package elements are implicitly converted to the
9578 of the MatchObject. This change aligns the behavior of Match() with the
9579 behavior of the other logical operators (LLess(), etc.) It also requires
9581 errata change to the ACPI specification as this support was intended for
9582 ACPI 3.0, but was inadvertently omitted.
9584 Fixed a problem with the internal implicit "to buffer" conversion.
9586 that are converted to buffers will cause buffer truncation if the string
9588 smaller than the target buffer. Integers that are converted to buffers
9590 not cause buffer truncation, only zero extension (both as per the ACPI
9591 spec.) The problem was introduced when code was added to truncate the
9592 buffer, but this should not be performed in all cases, only the string
9595 Fixed a problem with the Buffer and Package operators where the
9597 would get confused if two such operators were used as operands to an ASL
9598 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9599 stack was not being popped after the execution of these operators,
9601 in an AE_NO_RETURN_VALUE exception.
9603 Fixed a problem with constructs of the form Store(Index(...),...). The
9604 reference object returned from Index was inadvertently resolved to an
9606 value. This problem was introduced in version 20050114 when the behavior
9608 Store() was modified to restrict the object types that can be used as the
9609 source operand (to match the ACPI specification.)
9611 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9613 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9615 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9617 Code and Data Size: Current and previous core subsystem library sizes are
9618 shown below. These are the code and data sizes for the acpica.lib
9620 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9621 any ACPI driver or OSPM code. The debug version of the code includes the
9622 debug output trace mechanism and has a much larger code and data size.
9624 that these values will vary depending on the efficiency of the compiler
9626 the compiler options used during generation.
9629 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9630 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9632 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9633 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9636 2) iASL Compiler/Disassembler:
9638 Fixed a code generation problem in the constant folding optimization code
9639 where incorrect code was generated if a constant was reduced to a buffer
9640 object (i.e., a reduced type 5 opcode.)
9642 Fixed a typechecking problem for the ToBuffer operator. Caused by an
9643 incorrect return type in the internal opcode information table.
9645 ----------------------------------------
9646 25 January 2005. Summary of changes for version 20050125:
9648 1) ACPI CA Core Subsystem:
9650 Fixed a recently introduced problem with the Global Lock where the
9651 underlying semaphore was not created. This problem was introduced in
9652 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
9653 Acquire() operation on _GL.
9655 The local object cache is now optional, and is disabled by default. Both
9656 AcpiExec and the iASL compiler enable the cache because they run in user
9657 mode and this enhances their performance. #define
9658 ACPI_ENABLE_OBJECT_CACHE
9659 to enable the local cache.
9661 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
9663 optional "implicit return" support where an error was returned if no
9665 object was expected, but one was implicitly returned. AE_OK is now
9667 in this case and the implicitly returned object is deleted.
9668 AcpiUtEvaluateObject is only occasionally used, and only to execute
9670 methods such as _STA and _INI where the return type is known up front.
9672 Fixed a few issues with the internal convert-to-integer code. It now
9674 an error if an attempt is made to convert a null string, a string of only
9675 blanks/tabs, or a zero-length buffer. This affects both implicit
9677 and explicit conversion via the ToInteger() operator.
9679 The internal debug code in AcpiUtAcquireMutex has been commented out. It
9681 not needed for normal operation and should increase the performance of
9683 entire subsystem. The code remains in case it is needed for debug
9687 The AcpiExec source and makefile are included in the Unix/Linux package
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: 78.4K Code, 11.5K Data, 89.9K Total
9704 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9706 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9707 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9709 2) iASL Compiler/Disassembler:
9711 Switch/Case support: A warning is now issued if the type of the Switch
9713 cannot be determined at compile time. For example, Switch(Arg0) will
9714 generate the warning, and the type is assumed to be an integer. As per
9716 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
9720 Switch/Case support: Implemented support for buffer and string objects as
9721 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
9722 buffers and strings.
9724 Switch/Case support: The emitted code for the LEqual() comparisons now
9726 the switch value as the first operand, not the second. The case value is
9728 the second operand, and this allows the case value to be implicitly
9729 converted to the type of the switch value, not the other way around.
9731 Switch/Case support: Temporary variables are now emitted immediately
9733 the control method, not at the global level. This means that there are
9735 36 temps available per-method, not 36 temps per-module as was the case
9737 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
9739 ----------------------------------------
9740 14 January 2005. Summary of changes for version 20050114:
9742 Added 2005 copyright to all module headers. This affects every module in
9743 the core subsystem, iASL compiler, and the utilities.
9745 1) ACPI CA Core Subsystem:
9747 Fixed an issue with the String-to-Buffer conversion code where the string
9748 null terminator was not included in the buffer after conversion, but
9750 is existing ASL that assumes the string null terminator is included. This
9752 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
9753 introduced in the previous version when the code was updated to correctly
9754 set the converted buffer size as per the ACPI specification. The ACPI
9756 is ambiguous and will be updated to specify that the null terminator must
9758 included in the converted buffer. This also affects the ToBuffer() ASL
9761 Fixed a problem with the Mid() ASL/AML operator where it did not work
9762 correctly on Buffer objects. Newly created sub-buffers were not being
9767 Fixed a problem in AcpiTbFindTable where incorrect string compares were
9768 performed on the OemId and OemTableId table header fields. These fields
9770 not null terminated, so strncmp is now used instead of strcmp.
9772 Implemented a restriction on the Store() ASL/AML operator to align the
9773 behavior with the ACPI specification. Previously, any object could be
9775 as the source operand. Now, the only objects that may be used are
9777 Buffers, Strings, Packages, Object References, and DDB Handles. If
9778 necessary, the original behavior can be restored by enabling the
9779 EnableInterpreterSlack flag.
9781 Enhanced the optional "implicit return" support to allow an implicit
9783 value from methods that are invoked externally via the AcpiEvaluateObject
9784 interface. This enables implicit returns from the _STA and _INI methods,
9787 Changed the Revision() ASL/AML operator to return the current version of
9789 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
9791 the supported ACPI version (This is the function of the _REV method).
9793 Updated the _REV predefined method to return the currently supported
9797 Implemented batch mode option for the AcpiExec utility (-b).
9799 Code and Data Size: Current and previous core subsystem library sizes are
9800 shown below. These are the code and data sizes for the acpica.lib
9802 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9803 any ACPI driver or OSPM code. The debug version of the code includes the
9804 debug output trace mechanism and has a much larger code and data size.
9806 that these values will vary depending on the efficiency of the compiler
9808 the compiler options used during generation.
9811 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9812 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9814 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9815 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9817 ----------------------------------------
9818 10 December 2004. Summary of changes for version 20041210:
9820 ACPI 3.0 support is nearing completion in both the iASL compiler and the
9821 ACPI CA core subsystem.
9823 1) ACPI CA Core Subsystem:
9825 Fixed a problem in the ToDecimalString operator where the resulting
9827 length was incorrectly calculated. The length is now calculated exactly,
9828 eliminating incorrect AE_STRING_LIMIT exceptions.
9830 Fixed a problem in the ToHexString operator to allow a maximum 200
9832 string to be produced.
9834 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
9836 routine where the length of the resulting buffer was not truncated to the
9837 new size (if the target buffer already existed).
9839 Code and Data Size: Current and previous core subsystem library sizes are
9840 shown below. These are the code and data sizes for the acpica.lib
9842 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9843 any ACPI driver or OSPM code. The debug version of the code includes the
9844 debug output trace mechanism and has a much larger code and data size.
9846 that these values will vary depending on the efficiency of the compiler
9848 the compiler options used during generation.
9851 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9852 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9854 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9855 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9858 2) iASL Compiler/Disassembler:
9860 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
9861 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
9862 Includes support in the disassembler.
9864 Implemented support for the new (ACPI 3.0) parameter to the Register
9868 Fixed a problem where the _HE resource name for the Interrupt macro was
9869 referencing bit 0 instead of bit 1.
9871 Implemented check for maximum 255 interrupts in the Interrupt macro.
9873 Fixed a problem with the predefined resource descriptor names where
9874 incorrect AML code was generated if the offset within the resource buffer
9875 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
9876 but did not update the surrounding package lengths.
9878 Changes to the Dma macro: All channels within the channel list must be
9880 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
9881 optional (default is BusMaster).
9883 Implemented check for maximum 7 data bytes for the VendorShort macro.
9885 The ReadWrite parameter is now optional for the Memory32 and similar
9888 ----------------------------------------
9889 03 December 2004. Summary of changes for version 20041203:
9891 1) ACPI CA Core Subsystem:
9893 The low-level field insertion/extraction code (exfldio) has been
9895 rewritten to eliminate unnecessary complexity, bugs, and boundary
9898 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
9900 operators where the input operand could be inadvertently deleted if no
9901 conversion was necessary (e.g., if the input to ToInteger was an Integer
9904 Fixed a problem with the ToDecimalString and ToHexString where an
9906 exception code was returned if the resulting string would be > 200 chars.
9907 AE_STRING_LIMIT is now returned.
9909 Fixed a problem with the Concatenate operator where AE_OK was always
9910 returned, even if the operation failed.
9912 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
9913 semaphores to be allocated.
9915 Code and Data Size: Current and previous core subsystem library sizes are
9916 shown below. These are the code and data sizes for the acpica.lib
9918 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9919 any ACPI driver or OSPM code. The debug version of the code includes the
9920 debug output trace mechanism and has a much larger code and data size.
9922 that these values will vary depending on the efficiency of the compiler
9924 the compiler options used during generation.
9927 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9928 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9930 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9931 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9934 2) iASL Compiler/Disassembler:
9936 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
9937 recently introduced in 20041119.
9939 Fixed a problem with the ToUUID macro where the upper nybble of each
9941 byte was inadvertently set to zero.
9943 ----------------------------------------
9944 19 November 2004. Summary of changes for version 20041119:
9946 1) ACPI CA Core Subsystem:
9948 Fixed a problem in the internal ConvertToInteger routine where new
9950 were not truncated to 32 bits for 32-bit ACPI tables. This routine
9952 buffers and strings to integers.
9954 Implemented support to store a value to an Index() on a String object.
9956 is an ACPI 2.0 feature that had not yet been implemented.
9958 Implemented new behavior for storing objects to individual package
9960 (via the Index() operator). The previous behavior was to invoke the
9962 conversion rules if an object was already present at the index. The new
9963 behavior is to simply delete any existing object and directly store the
9965 object. Although the ACPI specification seems unclear on this subject,
9967 ACPI implementations behave in this manner. (This is the root of the
9968 AE_BAD_HEX_CONSTANT issue.)
9970 Modified the RSDP memory scan mechanism to support the extended checksum
9972 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
9973 RSDP signature is found with a valid checksum.
9975 Code and Data Size: Current and previous core subsystem library sizes are
9976 shown below. These are the code and data sizes for the acpica.lib
9978 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9979 any ACPI driver or OSPM code. The debug version of the code includes the
9980 debug output trace mechanism and has a much larger code and data size.
9982 that these values will vary depending on the efficiency of the compiler
9984 the compiler options used during generation.
9987 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9988 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9990 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9991 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9994 2) iASL Compiler/Disassembler:
9996 Fixed a missing semicolon in the aslcompiler.y file.
9998 ----------------------------------------
9999 05 November 2004. Summary of changes for version 20041105:
10001 1) ACPI CA Core Subsystem:
10003 Implemented support for FADT revision 2. This was an interim table
10005 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
10007 Implemented optional support to allow uninitialized LocalX and ArgX
10008 variables in a control method. The variables are initialized to an
10010 object with a value of zero. This support is enabled by setting the
10011 AcpiGbl_EnableInterpreterSlack flag to TRUE.
10013 Implemented support for Integer objects for the SizeOf operator. Either
10015 or 8 is returned, depending on the current integer size (32-bit or 64-
10017 depending on the parent table revision).
10019 Fixed a problem in the implementation of the SizeOf and ObjectType
10021 where the operand was resolved to a value too early, causing incorrect
10022 return values for some objects.
10024 Fixed some possible memory leaks during exceptional conditions.
10026 Code and Data Size: Current and previous core subsystem library sizes are
10027 shown below. These are the code and data sizes for the acpica.lib
10029 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10030 any ACPI driver or OSPM code. The debug version of the code includes the
10031 debug output trace mechanism and has a much larger code and data size.
10033 that these values will vary depending on the efficiency of the compiler
10035 the compiler options used during generation.
10038 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10039 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10041 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10042 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10045 2) iASL Compiler/Disassembler:
10047 Implemented support for all ACPI 3.0 reserved names and methods.
10049 Implemented all ACPI 3.0 grammar elements in the front-end, including
10050 support for semicolons.
10052 Implemented the ACPI 3.0 Function() and ToUUID() macros
10054 Fixed a problem in the disassembler where a Scope() operator would not be
10055 emitted properly if the target of the scope was in another table.
10057 ----------------------------------------
10058 15 October 2004. Summary of changes for version 20041015:
10060 Note: ACPI CA is currently undergoing an in-depth and complete formal
10061 evaluation to test/verify the following areas. Other suggestions are
10062 welcome. This will result in an increase in the frequency of releases and
10063 the number of bug fixes in the next few months.
10064 - Functional tests for all ASL/AML operators
10065 - All implicit/explicit type conversions
10066 - Bit fields and operation regions
10067 - 64-bit math support and 32-bit-only "truncated" math support
10068 - Exceptional conditions, both compiler and interpreter
10069 - Dynamic object deletion and memory leaks
10070 - ACPI 3.0 support when implemented
10071 - External interfaces to the ACPI subsystem
10074 1) ACPI CA Core Subsystem:
10076 Fixed two alignment issues on 64-bit platforms - within debug statements
10078 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
10080 field within the non-aligned ACPI generic address structure.
10082 Fixed a problem in the Increment and Decrement operators where incorrect
10083 operand resolution could result in the inadvertent modification of the
10084 original integer when the integer is passed into another method as an
10085 argument and the arg is then incremented/decremented.
10087 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
10089 BCD number were truncated during conversion.
10091 Fixed a problem in the ToDecimal operator where the length of the
10093 string could be set incorrectly too long if the input operand was a
10097 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
10099 within a buffer would prematurely terminate a compare between buffer
10102 Added a check for string overflow (>200 characters as per the ACPI
10103 specification) during the Concatenate operator with two string operands.
10105 Code and Data Size: Current and previous core subsystem library sizes are
10106 shown below. These are the code and data sizes for the acpica.lib
10108 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10109 any ACPI driver or OSPM code. The debug version of the code includes the
10110 debug output trace mechanism and has a much larger code and data size.
10112 that these values will vary depending on the efficiency of the compiler
10114 the compiler options used during generation.
10117 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10118 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10120 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10121 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10125 2) iASL Compiler/Disassembler:
10127 Allow the use of the ObjectType operator on uninitialized Locals and Args
10128 (returns 0 as per the ACPI specification).
10130 Fixed a problem where the compiler would fault if there was a syntax
10132 in the FieldName of all of the various CreateXXXField operators.
10134 Disallow the use of lower case letters within the EISAID macro, as per
10136 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
10138 U is an uppercase letter and N is a hex digit.
10141 ----------------------------------------
10142 06 October 2004. Summary of changes for version 20041006:
10144 1) ACPI CA Core Subsystem:
10146 Implemented support for the ACPI 3.0 Timer operator. This ASL function
10147 implements a 64-bit timer with 100 nanosecond granularity.
10149 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
10150 implement the ACPI 3.0 Timer operator. This allows the host OS to
10152 the timer with the best clock available. Also, it keeps the core
10154 out of the clock handling business, since the host OS (usually) performs
10157 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
10158 functions use a 64-bit address which is part of the packed ACPI Generic
10159 Address Structure. Since the structure is non-aligned, the alignment
10161 are now used to extract the address to a local variable before use.
10163 Fixed a problem where the ToInteger operator assumed all input strings
10165 hexadecimal. The operator now handles both decimal strings and hex
10167 (prefixed with "0x").
10169 Fixed a problem where the string length in the string object created as a
10170 result of the internal ConvertToString procedure could be incorrect. This
10171 potentially affected all implicit conversions and also the
10173 and ToHexString operators.
10175 Fixed two problems in the ToString operator. If the length parameter was
10176 zero, an incorrect string object was created and the value of the input
10177 length parameter was inadvertently changed from zero to Ones.
10179 Fixed a problem where the optional ResourceSource string in the
10181 resource macro was ignored.
10183 Simplified the interfaces to the internal division functions, reducing
10185 size and complexity.
10187 Code and Data Size: Current and previous core subsystem library sizes are
10188 shown below. These are the code and data sizes for the acpica.lib
10190 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10191 any ACPI driver or OSPM code. The debug version of the code includes the
10192 debug output trace mechanism and has a much larger code and data size.
10194 that these values will vary depending on the efficiency of the compiler
10196 the compiler options used during generation.
10199 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10200 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10202 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10203 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10206 2) iASL Compiler/Disassembler:
10208 Implemented support for the ACPI 3.0 Timer operator.
10210 Fixed a problem where the Default() operator was inadvertently ignored in
10212 Switch/Case block. This was a problem in the translation of the Switch
10213 statement to If...Else pairs.
10215 Added support to allow a standalone Return operator, with no parentheses
10219 Fixed a problem with code generation for the ElseIf operator where the
10220 translated Else...If parse tree was improperly constructed leading to the
10223 ----------------------------------------
10224 22 September 2004. Summary of changes for version 20040922:
10226 1) ACPI CA Core Subsystem:
10228 Fixed a problem with the implementation of the LNot() operator where
10230 was not returned for the TRUE case. Changed the code to return Ones
10232 of (!Arg) which was usually 1. This change affects iASL constant folding
10234 this operator also.
10236 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10238 initialized properly -- Now zero the entire buffer in this case where the
10239 buffer already exists.
10241 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10242 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10243 related code considerably. This will require changes/updates to all OS
10244 interface layers (OSLs.)
10246 Implemented a new external interface, AcpiInstallExceptionHandler, to
10248 a system exception handler to be installed. This handler is invoked upon
10250 run-time exception that occurs during control method execution.
10252 Added support for the DSDT in AcpiTbFindTable. This allows the
10253 DataTableRegion() operator to access the local copy of the DSDT.
10255 Code and Data Size: Current and previous core subsystem library sizes are
10256 shown below. These are the code and data sizes for the acpica.lib
10258 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10259 any ACPI driver or OSPM code. The debug version of the code includes the
10260 debug output trace mechanism and has a much larger code and data size.
10262 that these values will vary depending on the efficiency of the compiler
10264 the compiler options used during generation.
10267 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10268 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10270 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10271 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10274 2) iASL Compiler/Disassembler:
10276 Fixed a problem with constant folding and the LNot operator. LNot was
10277 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10279 could result in the generation of an incorrect folded/reduced constant.
10281 End-Of-File is now allowed within a "//"-style comment. A parse error no
10282 longer occurs if such a comment is at the very end of the input ASL
10286 Implemented the "-r" option to override the Revision in the table header.
10287 The initial use of this option will be to simplify the evaluation of the
10289 interpreter by allowing a single ASL source module to be compiled for
10291 32-bit or 64-bit integers.
10294 ----------------------------------------
10295 27 August 2004. Summary of changes for version 20040827:
10297 1) ACPI CA Core Subsystem:
10299 - Implemented support for implicit object conversion in the non-numeric
10300 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10302 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10303 the second operand is implicitly converted on the fly to match the type
10305 the first operand. For example:
10307 LEqual (Source1, Source2)
10309 Source1 and Source2 must each evaluate to an integer, a string, or a
10311 The data type of Source1 dictates the required type of Source2. Source2
10313 implicitly converted if necessary to match the type of Source1.
10315 - Updated and corrected the behavior of the string conversion support.
10317 rules concerning conversion of buffers to strings (according to the ACPI
10318 specification) are as follows:
10320 ToDecimalString - explicit byte-wise conversion of buffer to string of
10321 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10323 conversion of buffer to string of hex values (0-FF) separated by commas.
10324 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10326 copy with no transform except NULL terminated. Any other implicit buffer-
10328 string conversion - byte-wise conversion of buffer to string of hex
10330 (0-FF) separated by spaces.
10332 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10334 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10336 one byte too short in the case of a node in the root scope. This could
10337 cause a fault during debug output.
10339 - Code and Data Size: Current and previous core subsystem library sizes
10341 shown below. These are the code and data sizes for the acpica.lib
10343 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10344 any ACPI driver or OSPM code. The debug version of the code includes the
10345 debug output trace mechanism and has a much larger code and data size.
10347 that these values will vary depending on the efficiency of the compiler
10349 the compiler options used during generation.
10352 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10353 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10355 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10356 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10359 2) iASL Compiler/Disassembler:
10361 - Fixed a Linux generation error.
10364 ----------------------------------------
10365 16 August 2004. Summary of changes for version 20040816:
10367 1) ACPI CA Core Subsystem:
10369 Designed and implemented support within the AML interpreter for the so-
10370 called "implicit return". This support returns the result of the last
10372 operation within a control method, in the absence of an explicit Return()
10373 operator. A few machines depend on this behavior, even though it is not
10374 explicitly supported by the ASL language. It is optional support that
10376 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10378 Removed support for the PCI_Config address space from the internal low
10380 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10381 support was not used internally, and would not work correctly anyway
10383 the PCI bus number and segment number were not supported. There are
10384 separate interfaces for PCI configuration space access because of the
10388 Code and Data Size: Current and previous core subsystem library sizes are
10389 shown below. These are the code and data sizes for the acpica.lib
10391 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10392 any ACPI driver or OSPM code. The debug version of the code includes the
10393 debug output trace mechanism and has a much larger code and data size.
10395 that these values will vary depending on the efficiency of the compiler
10397 the compiler options used during generation.
10400 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10401 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10403 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10404 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10407 2) iASL Compiler/Disassembler:
10409 Fixed a problem where constants in ASL expressions at the root level (not
10410 within a control method) could be inadvertently truncated during code
10411 generation. This problem was introduced in the 20040715 release.
10414 ----------------------------------------
10415 15 July 2004. Summary of changes for version 20040715:
10417 1) ACPI CA Core Subsystem:
10419 Restructured the internal HW GPE interfaces to pass/track the current
10421 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10422 increase flexibility of the interfaces.
10424 Implemented a "lexicographical compare" for String and Buffer objects
10426 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10428 as per further clarification to the ACPI specification. Behavior is
10430 to C library "strcmp".
10432 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10433 external function. In the 32-bit non-debug case, the stack use has been
10434 reduced from 168 bytes to 32 bytes.
10436 Deployed a new run-time configuration flag,
10437 AcpiGbl_EnableInterpreterSlack,
10438 whose purpose is to allow the AML interpreter to forgive certain bad AML
10439 constructs. Default setting is FALSE.
10441 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10443 support code. If enabled, it allows field access to go beyond the end of
10445 region definition if the field is within the region length rounded up to
10447 next access width boundary (a common coding error.)
10449 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10450 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10452 symbols are lowercased by the latest version of the AcpiSrc tool.
10454 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10455 rename "Register" to simply "Reg" to prevent certain compilers from
10458 Code and Data Size: Current and previous core subsystem library sizes are
10459 shown below. These are the code and data sizes for the acpica.lib
10461 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10462 any ACPI driver or OSPM code. The debug version of the code includes the
10463 debug output trace mechanism and has a much larger code and data size.
10465 that these values will vary depending on the efficiency of the compiler
10467 the compiler options used during generation.
10470 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10471 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10473 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10474 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10477 2) iASL Compiler/Disassembler:
10479 Implemented full support for Package objects within the Case() operator.
10480 Note: The Break() operator is currently not supported within Case blocks
10481 (TermLists) as there is some question about backward compatibility with
10486 Fixed a problem where complex terms were not supported properly within
10490 Eliminated extraneous warning for compiler-emitted reserved names of the
10491 form "_T_x". (Used in Switch/Case operators.)
10493 Eliminated optimization messages for "_T_x" objects and small constants
10494 within the DefinitionBlock operator.
10497 ----------------------------------------
10498 15 June 2004. Summary of changes for version 20040615:
10500 1) ACPI CA Core Subsystem:
10502 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10504 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10507 All directory names in the entire source package are lower case, as they
10508 were in earlier releases.
10510 Implemented "Disassemble" command in the AML debugger that will
10512 a single control method.
10514 Code and Data Size: Current and previous core subsystem library sizes are
10515 shown below. These are the code and data sizes for the acpica.lib
10517 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10518 any ACPI driver or OSPM code. The debug version of the code includes the
10519 debug output trace mechanism and has a much larger code and data size.
10521 that these values will vary depending on the efficiency of the compiler
10523 the compiler options used during generation.
10526 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10527 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10530 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10531 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10534 2) iASL Compiler/Disassembler:
10536 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10538 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10541 All directory names in the entire source package are lower case, as they
10542 were in earlier releases.
10544 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10547 Fixed an issue with the Windows version of the compiler where later
10549 of Windows place the FADT in the registry under the name "FADT" and not
10550 "FACP" as earlier versions did. This applies when using the -g or -
10551 d<nofilename> options. The compiler now looks for both strings as
10554 Fixed a problem with compiler namepath optimization where a namepath
10556 the Scope() operator could not be optimized if the namepath was a subpath
10558 the current scope path.
10560 ----------------------------------------
10561 27 May 2004. Summary of changes for version 20040527:
10563 1) ACPI CA Core Subsystem:
10565 Completed a new design and implementation for EBDA (Extended BIOS Data
10567 support in the RSDP scan code. The original code improperly scanned for
10569 EBDA by simply scanning from memory location 0 to 0x400. The correct
10571 is to first obtain the EBDA pointer from within the BIOS data area, then
10572 scan 1K of memory starting at the EBDA pointer. There appear to be few
10574 any machines that place the RSDP in the EBDA, however.
10576 Integrated a fix for a possible fault during evaluation of BufferField
10577 arguments. Obsolete code that was causing the problem was removed.
10579 Found and fixed a problem in the Field Support Code where data could be
10580 corrupted on a bit field read that starts on an aligned boundary but does
10581 not end on an aligned boundary. Merged the read/write "datum length"
10582 calculation code into a common procedure.
10584 Rolled in a couple of changes to the FreeBSD-specific header.
10587 Code and Data Size: Current and previous core subsystem library sizes are
10588 shown below. These are the code and data sizes for the acpica.lib
10590 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10591 any ACPI driver or OSPM code. The debug version of the code includes the
10592 debug output trace mechanism and has a much larger code and data size.
10594 that these values will vary depending on the efficiency of the compiler
10596 the compiler options used during generation.
10599 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10600 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10602 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10603 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10606 2) iASL Compiler/Disassembler:
10608 Fixed a generation warning produced by some overly-verbose compilers for
10612 ----------------------------------------
10613 14 May 2004. Summary of changes for version 20040514:
10615 1) ACPI CA Core Subsystem:
10617 Fixed a problem where hardware GPE enable bits sometimes not set properly
10618 during and after GPE method execution. Result of 04/27 changes.
10620 Removed extra "clear all GPEs" when sleeping/waking.
10622 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10623 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10625 the new AcpiEv* calls as appropriate.
10627 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10629 now "Microsoft Windows NT" for maximum compatibility. However this can
10631 changed by modifying the acconfig.h file.
10633 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10634 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10636 Run _INI methods on ThermalZone objects. This is against the ACPI
10637 specification, but there is apparently ASL code in the field that has
10639 _INI methods, and apparently "other" AML interpreters execute them.
10641 Performed a full 16/32/64 bit lint that resulted in some small changes.
10643 Added a sleep simulation command to the AML debugger to test sleep code.
10645 Code and Data Size: Current and previous core subsystem library sizes are
10646 shown below. These are the code and data sizes for the acpica.lib
10648 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10649 any ACPI driver or OSPM code. The debug version of the code includes the
10650 debug output trace mechanism and has a much larger code and data size.
10652 that these values will vary depending on the efficiency of the compiler
10654 the compiler options used during generation.
10657 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10658 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10660 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10661 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10663 ----------------------------------------
10664 27 April 2004. Summary of changes for version 20040427:
10666 1) ACPI CA Core Subsystem:
10668 Completed a major overhaul of the GPE handling within ACPI CA. There are
10669 now three types of GPEs: wake-only, runtime-only, and combination
10671 The only GPEs allowed to be combination wake/run are for button-style
10672 devices such as a control-method power button, control-method sleep
10674 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
10676 referenced by any _PRW methods are marked for "runtime" and hardware
10677 enabled. Any GPE that is referenced by a _PRW method is marked for
10679 (and disabled at runtime). However, at sleep time, only those GPEs that
10680 have been specifically enabled for wake via the AcpiEnableGpe interface
10682 actually be hardware enabled.
10684 A new external interface has been added, AcpiSetGpeType(), that is meant
10686 be used by device drivers to force a GPE to a particular type. It will
10688 especially useful for the drivers for the button devices mentioned above.
10690 Completed restructuring of the ACPI CA initialization sequence so that
10691 default operation region handlers are installed before GPEs are
10693 and the _PRW methods are executed. This will prevent errors when the
10695 methods attempt to access system memory or I/O space.
10697 GPE enable/disable no longer reads the GPE enable register. We now keep
10699 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
10700 thus no longer depend on the hardware to maintain these bits.
10702 Always clear the wake status and fixed/GPE status bits before sleep, even
10705 Improved the AML debugger output for displaying the GPE blocks and their
10708 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
10712 Fixed a problem where the physical address was incorrectly calculated
10714 the Load() operator was used to directly load from an Operation Region
10716 loading from a Field object.) Also added check for minimum table length
10720 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
10723 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
10724 consistency with the other fields returned.
10726 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
10727 structure for each GPE in the system, so the size of this structure is
10730 CPU stack requirement reduction: Cleaned up the method execution and
10732 evaluation paths so that now a parameter structure is passed, instead of
10733 copying the various method parameters over and over again.
10735 In evregion.c: Correctly exit and reenter the interpreter region if and
10736 only if dispatching an operation region request to a user-installed
10738 Do not exit/reenter when dispatching to a default handler (e.g., default
10739 system memory or I/O handlers)
10742 Notes for updating drivers for the new GPE support. The following
10744 must be made to ACPI-related device drivers that are attached to one or
10746 GPEs: (This information will be added to the ACPI CA Programmer
10749 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
10751 explicitly call AcpiEnableGpe.
10752 2) There is a new interface called AcpiSetGpeType. This should be called
10753 before enabling the GPE. Also, this interface will automatically disable
10754 the GPE if it is currently enabled.
10755 3) AcpiEnableGpe no longer supports a GPE type flag.
10757 Specific drivers that must be changed:
10759 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
10760 AeGpeHandler, NULL);
10761 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
10762 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
10764 2) Button Drivers (Power, Lid, Sleep):
10765 Run _PRW method under parent device
10766 If _PRW exists: /* This is a control-method button */
10767 Extract GPE number and possibly GpeDevice
10768 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
10769 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
10771 For all other devices that have _PRWs, we automatically set the GPE type
10773 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
10775 must be done on a selective basis, usually requiring some kind of user
10777 to allow the user to pick the wake devices.
10780 Code and Data Size: Current and previous core subsystem library sizes are
10781 shown below. These are the code and data sizes for the acpica.lib
10783 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10784 any ACPI driver or OSPM code. The debug version of the code includes the
10785 debug output trace mechanism and has a much larger code and data size.
10787 that these values will vary depending on the efficiency of the compiler
10789 the compiler options used during generation.
10792 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10793 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10796 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10797 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10801 ----------------------------------------
10802 02 April 2004. Summary of changes for version 20040402:
10804 1) ACPI CA Core Subsystem:
10806 Fixed an interpreter problem where an indirect store through an ArgX
10807 parameter was incorrectly applying the "implicit conversion rules" during
10808 the store. From the ACPI specification: "If the target is a method local
10810 argument (LocalX or ArgX), no conversion is performed and the result is
10811 stored directly to the target". The new behavior is to disable implicit
10812 conversion during ALL stores to an ArgX.
10814 Changed the behavior of the _PRW method scan to ignore any and all errors
10815 returned by a given _PRW. This prevents the scan from aborting from the
10816 failure of any single _PRW.
10818 Moved the runtime configuration parameters from the global init procedure
10820 static variables in acglobal.h. This will allow the host to override the
10821 default values easily.
10823 Code and Data Size: Current and previous core subsystem library sizes are
10824 shown below. These are the code and data sizes for the acpica.lib
10826 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10827 any ACPI driver or OSPM code. The debug version of the code includes the
10828 debug output trace mechanism and has a much larger code and data size.
10830 that these values will vary depending on the efficiency of the compiler
10832 the compiler options used during generation.
10835 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10836 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10838 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10839 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10842 2) iASL Compiler/Disassembler:
10844 iASL now fully disassembles SSDTs. However, External() statements are
10846 generated automatically for unresolved symbols at this time. This is a
10847 planned feature for future implementation.
10849 Fixed a scoping problem in the disassembler that occurs when the type of
10851 target of a Scope() operator is overridden. This problem caused an
10852 incorrectly nested internal namespace to be constructed.
10854 Any warnings or errors that are emitted during disassembly are now
10856 out automatically so that the resulting file can be recompiled without
10860 ----------------------------------------
10861 26 March 2004. Summary of changes for version 20040326:
10863 1) ACPI CA Core Subsystem:
10865 Implemented support for "wake" GPEs via interaction between GPEs and the
10866 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
10867 identified as a WAKE GPE and by default will no longer be enabled at
10868 runtime. Previously, we were blindly enabling all GPEs with a
10870 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
10872 believe this has been the cause of thousands of "spurious" GPEs on some
10875 This new GPE behavior is can be reverted to the original behavior (enable
10876 ALL GPEs at runtime) via a runtime flag.
10878 Fixed a problem where aliased control methods could not access objects
10879 properly. The proper scope within the namespace was not initialized
10880 (transferred to the target of the aliased method) before executing the
10883 Fixed a potential race condition on internal object deletion on the
10885 object in AcpiEvaluateObject.
10887 Integrated a fix for resource descriptors where both _MEM and _MTP were
10888 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
10889 wide, 0x0F instead of 0x03.)
10891 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
10894 fault in some cases.
10896 Updated Notify() values for debug statements in evmisc.c
10898 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
10900 Code and Data Size: Current and previous core subsystem library sizes are
10901 shown below. These are the code and data sizes for the acpica.lib
10903 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10904 any ACPI driver or OSPM code. The debug version of the code includes the
10905 debug output trace mechanism and has a much larger code and data size.
10907 that these values will vary depending on the efficiency of the compiler
10909 the compiler options used during generation.
10913 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10914 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10916 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10917 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10919 ----------------------------------------
10920 11 March 2004. Summary of changes for version 20040311:
10922 1) ACPI CA Core Subsystem:
10924 Fixed a problem where errors occurring during the parse phase of control
10925 method execution did not abort cleanly. For example, objects created and
10926 installed in the namespace were not deleted. This caused all subsequent
10927 invocations of the method to return the AE_ALREADY_EXISTS exception.
10929 Implemented a mechanism to force a control method to "Serialized"
10931 if the method attempts to create namespace objects. (The root of the
10932 AE_ALREADY_EXISTS problem.)
10934 Implemented support for the predefined _OSI "internal" control method.
10935 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
10937 "Windows 2001.1", and can be easily upgraded for new strings as
10939 This feature will allow "other" operating systems to execute the fully
10940 tested, "Windows" code path through the ASL code
10942 Global Lock Support: Now allows multiple acquires and releases with any
10943 internal thread. Removed concept of "owning thread" for this special
10946 Fixed two functions that were inappropriately declaring large objects on
10948 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
10950 method execution considerably.
10952 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
10953 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
10955 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
10956 defined on the machine.
10958 Implemented two runtime options: One to force all control method
10960 to "Serialized" to mimic Windows behavior, another to disable _OSI
10962 if it causes problems on a given machine.
10964 Code and Data Size: Current and previous core subsystem library sizes are
10965 shown below. These are the code and data sizes for the acpica.lib
10967 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10968 any ACPI driver or OSPM code. The debug version of the code includes the
10969 debug output trace mechanism and has a much larger code and data size.
10971 that these values will vary depending on the efficiency of the compiler
10973 the compiler options used during generation.
10976 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10977 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10979 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10980 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10982 2) iASL Compiler/Disassembler:
10984 Fixed an array size problem for FreeBSD that would cause the compiler to
10987 ----------------------------------------
10988 20 February 2004. Summary of changes for version 20040220:
10991 1) ACPI CA Core Subsystem:
10993 Implemented execution of _SxD methods for Device objects in the
10994 GetObjectInfo interface.
10996 Fixed calls to _SST method to pass the correct arguments.
10998 Added a call to _SST on wake to restore to "working" state.
11000 Check for End-Of-Buffer failure case in the WalkResources interface.
11002 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
11003 structures to the beginning of the file.
11005 After wake, clear GPE status register(s) before enabling GPEs.
11007 After wake, clear/enable power button. (Perhaps we should clear/enable
11009 fixed events upon wake.)
11011 Fixed a couple of possible memory leaks in the Namespace manager.
11013 Integrated latest acnetbsd.h file.
11015 ----------------------------------------
11016 11 February 2004. Summary of changes for version 20040211:
11019 1) ACPI CA Core Subsystem:
11021 Completed investigation and implementation of the call-by-reference
11022 mechanism for control method arguments.
11024 Fixed a problem where a store of an object into an indexed package could
11025 fail if the store occurs within a different method than the method that
11026 created the package.
11028 Fixed a problem where the ToDecimal operator could return incorrect
11031 Fixed a problem where the CopyObject operator could fail on some of the
11033 obscure objects (e.g., Reference objects.)
11035 Improved the output of the Debug object to display buffer, package, and
11038 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
11040 the expected result.
11042 Added permanent ACPI_REPORT_ERROR macros for all instances of the
11043 ACPI_AML_INTERNAL exception.
11045 Integrated latest version of acfreebsd.h
11047 ----------------------------------------
11048 16 January 2004. Summary of changes for version 20040116:
11050 The purpose of this release is primarily to update the copyright years in
11051 each module, thus causing a huge number of diffs. There are a few small
11052 functional changes, however.
11054 1) ACPI CA Core Subsystem:
11056 Improved error messages when there is a problem finding one or more of
11058 required base ACPI tables
11060 Reintroduced the definition of APIC_HEADER in actbl.h
11062 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
11064 Removed extraneous reference to NewObj in dsmthdat.c
11068 Fixed a problem introduced in December that disabled the correct
11070 of Resource Templates
11073 ----------------------------------------
11074 03 December 2003. Summary of changes for version 20031203:
11076 1) ACPI CA Core Subsystem:
11078 Changed the initialization of Operation Regions during subsystem
11079 init to perform two entire walks of the ACPI namespace; The first
11080 to initialize the regions themselves, the second to execute the
11081 _REG methods. This fixed some interdependencies across _REG
11082 methods found on some machines.
11084 Fixed a problem where a Store(Local0, Local1) could simply update
11085 the object reference count, and not create a new copy of the
11086 object if the Local1 is uninitialized.
11088 Implemented support for the _SST reserved method during sleep
11091 Implemented support to clear the SLP_TYP and SLP_EN bits when
11092 waking up, this is apparently required by some machines.
11094 When sleeping, clear the wake status only if SleepState is not S5.
11096 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
11097 pointer arithmetic advanced a string pointer too far.
11099 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
11100 could be returned if the requested table has not been loaded.
11102 Within the support for IRQ resources, restructured the handling of
11103 the active and edge/level bits.
11105 Fixed a few problems in AcpiPsxExecute() where memory could be
11106 leaked under certain error conditions.
11108 Improved error messages for the cases where the ACPI mode could
11111 Code and Data Size: Current and previous core subsystem library
11112 sizes are shown below. These are the code and data sizes for the
11113 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11114 these values do not include any ACPI driver or OSPM code. The
11115 debug version of the code includes the debug output trace
11116 mechanism and has a much larger code and data size. Note that
11117 these values will vary depending on the efficiency of the compiler
11118 and the compiler options used during generation.
11120 Previous Release (20031029):
11121 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11122 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11124 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11125 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11127 2) iASL Compiler/Disassembler:
11129 Implemented a fix for the iASL disassembler where a bad index was
11130 generated. This was most noticeable on 64-bit platforms
11133 ----------------------------------------
11134 29 October 2003. Summary of changes for version 20031029:
11136 1) ACPI CA Core Subsystem:
11139 Fixed a problem where a level-triggered GPE with an associated
11140 _Lxx control method was incorrectly cleared twice.
11142 Fixed a problem with the Field support code where an access can
11143 occur beyond the end-of-region if the field is non-aligned but
11144 extends to the very end of the parent region (resulted in an
11145 AE_AML_REGION_LIMIT exception.)
11147 Fixed a problem with ACPI Fixed Events where an RT Clock handler
11148 would not get invoked on an RTC event. The RTC event bitmasks for
11149 the PM1 registers were not being initialized properly.
11151 Implemented support for executing _STA and _INI methods for
11152 Processor objects. Although this is currently not part of the
11153 ACPI specification, there is existing ASL code that depends on the
11154 init-time execution of these methods.
11156 Implemented and deployed a GetDescriptorName function to decode
11157 the various types of internal descriptors. Guards against null
11158 descriptors during debug output also.
11160 Implemented and deployed a GetNodeName function to extract the 4-
11161 character namespace node name. This function simplifies the debug
11162 and error output, as well as guarding against null pointers during
11165 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
11166 simplify the debug and error output of 64-bit integers. This
11167 macro replaces the HIDWORD and LODWORD macros for dumping these
11170 Updated the implementation of the Stall() operator to only call
11171 AcpiOsStall(), and also return an error if the operand is larger
11172 than 255. This preserves the required behavior of not
11173 relinquishing the processor, as would happen if AcpiOsSleep() was
11174 called for "long stalls".
11176 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
11177 initialized are now treated as NOOPs.
11179 Cleaned up a handful of warnings during 64-bit generation.
11181 Fixed a reported error where and incorrect GPE number was passed
11182 to the GPE dispatch handler. This value is only used for error
11183 output, however. Used this opportunity to clean up and streamline
11184 the GPE dispatch code.
11186 Code and Data Size: Current and previous core subsystem library
11187 sizes are shown below. These are the code and data sizes for the
11188 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11189 these values do not include any ACPI driver or OSPM code. The
11191 debug version of the code includes the debug output trace
11192 mechanism and has a much larger code and data size. Note that
11193 these values will vary depending on the efficiency of the compiler
11194 and the compiler options used during generation.
11196 Previous Release (20031002):
11197 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11198 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11200 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11201 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11204 2) iASL Compiler/Disassembler:
11206 Updated the iASL compiler to return an error if the operand to the
11207 Stall() operator is larger than 255.
11210 ----------------------------------------
11211 02 October 2003. Summary of changes for version 20031002:
11214 1) ACPI CA Core Subsystem:
11216 Fixed a problem with Index Fields where the index was not
11217 incremented for fields that require multiple writes to the
11218 index/data registers (Fields that are wider than the data
11221 Fixed a problem with all Field objects where a write could go
11222 beyond the end-of-field if the field was larger than the access
11223 granularity and therefore required multiple writes to complete the
11224 request. An extra write beyond the end of the field could happen
11227 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11228 would incorrectly be returned if the width of the Data Register
11229 was larger than the specified field access width.
11231 Completed fixes for LoadTable() and Unload() and verified their
11232 operation. Implemented full support for the "DdbHandle" object
11233 throughout the ACPI CA subsystem.
11235 Implemented full support for the MADT and ECDT tables in the ACPI
11236 CA header files. Even though these tables are not directly
11237 consumed by ACPI CA, the header definitions are useful for ACPI
11240 Integrated resource descriptor fixes posted to the Linux ACPI
11241 list. This included checks for minimum descriptor length, and
11242 support for trailing NULL strings within descriptors that have
11243 optional string elements.
11245 Code and Data Size: Current and previous core subsystem library
11246 sizes are shown below. These are the code and data sizes for the
11247 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11248 these values do not include any ACPI driver or OSPM code. The
11249 debug version of the code includes the debug output trace
11250 mechanism and has a much larger code and data size. Note that
11251 these values will vary depending on the efficiency of the compiler
11252 and the compiler options used during generation.
11254 Previous Release (20030918):
11255 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11256 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11258 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11259 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11264 Implemented detection of non-ASCII characters within the input
11265 source ASL file. This catches attempts to compile binary (AML)
11266 files early in the compile, with an informative error message.
11268 Fixed a problem where the disassembler would fault if the output
11269 filename could not be generated or if the output file could not be
11272 ----------------------------------------
11273 18 September 2003. Summary of changes for version 20030918:
11276 1) ACPI CA Core Subsystem:
11278 Found and fixed a longstanding problem with the late execution of
11279 the various deferred AML opcodes (such as Operation Regions,
11280 Buffer Fields, Buffers, and Packages). If the name string
11281 specified for the name of the new object placed the object in a
11282 scope other than the current scope, the initialization/execution
11283 of the opcode failed. The solution to this problem was to
11284 implement a mechanism where the late execution of such opcodes
11285 does not attempt to lookup/create the name a second time in an
11286 incorrect scope. This fixes the "region size computed
11287 incorrectly" problem.
11289 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11290 Global Lock AE_BAD_PARAMETER error.
11292 Fixed several 64-bit issues with prototypes, casting and data
11295 Removed duplicate prototype from acdisasm.h
11297 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11299 Code and Data Size: Current and previous core subsystem library
11300 sizes are shown below. These are the code and data sizes for the
11301 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11302 these values do not include any ACPI driver or OSPM code. The
11303 debug version of the code includes the debug output trace
11304 mechanism and has a much larger code and data size. Note that
11305 these values will vary depending on the efficiency of the compiler
11306 and the compiler options used during generation.
11310 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11311 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11313 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11314 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11319 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11320 correct sleep time in seconds.
11322 ----------------------------------------
11323 14 July 2003. Summary of changes for version 20030619:
11325 1) ACPI CA Core Subsystem:
11327 Parse SSDTs in order discovered, as opposed to reverse order
11330 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11337 Dynamically allocate SDT list (suggested by Andi Kleen)
11339 proc function return value cleanups (Andi Kleen)
11341 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11343 Make it so acpismp=force works (reported by Andrew Morton)
11346 ----------------------------------------
11347 19 June 2003. Summary of changes for version 20030619:
11349 1) ACPI CA Core Subsystem:
11351 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11353 Do not acquire a semaphore in the S5 shutdown path.
11355 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11357 Fix sleep/stall code reversal. (Andi Kleen)
11359 Revert a change having to do with control method calling
11364 acpiphp update (Takayoshi Kochi)
11366 Export acpi_disabled for sonypi (Stelian Pop)
11368 Mention acpismp=force in config help
11370 Re-add acpitable.c and acpismp=force. This improves backwards
11372 compatibility and also cleans up the code to a significant degree.
11374 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11376 ----------------------------------------
11377 22 May 2003. Summary of changes for version 20030522:
11379 1) ACPI CA Core Subsystem:
11381 Found and fixed a reported problem where an AE_NOT_FOUND error
11382 occurred occasionally during _BST evaluation. This turned out to
11383 be an Owner ID allocation issue where a called method did not get
11384 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11385 ID UINT16 would wraparound so that the ID would be the same as the
11386 caller's and the called method would delete the caller's
11389 Implemented extended error reporting for control methods that are
11390 aborted due to a run-time exception. Output includes the exact
11391 AML instruction that caused the method abort, a dump of the method
11392 locals and arguments at the time of the abort, and a trace of all
11393 nested control method calls.
11395 Modified the interpreter to allow the creation of buffers of zero
11396 length from the AML code. Implemented new code to ensure that no
11397 attempt is made to actually allocate a memory buffer (of length
11398 zero) - instead, a simple buffer object with a NULL buffer pointer
11399 and length zero is created. A warning is no longer issued when
11400 the AML attempts to create a zero-length buffer.
11402 Implemented a workaround for the "leading asterisk issue" in
11403 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11404 asterisk is automatically removed if present in any HID, UID, or
11405 CID strings. The iASL compiler will still flag this asterisk as
11408 Implemented full support for _CID methods that return a package of
11409 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11410 now additionally returns a device _CID list if present. This
11411 required a change to the external interface in order to pass an
11412 ACPI_BUFFER object as a parameter since the _CID list is of
11415 Fixed a problem with the new AE_SAME_HANDLER exception where
11416 handler initialization code did not know about this exception.
11418 Code and Data Size: Current and previous core subsystem library
11419 sizes are shown below. These are the code and data sizes for the
11420 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11421 these values do not include any ACPI driver or OSPM code. The
11422 debug version of the code includes the debug output trace
11423 mechanism and has a much larger code and data size. Note that
11424 these values will vary depending on the efficiency of the compiler
11425 and the compiler options used during generation.
11427 Previous Release (20030509):
11428 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11429 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11431 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11432 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11437 Fixed a bug in which we would reinitialize the ACPI interrupt
11438 after it was already working, thus disabling all ACPI and the IRQs
11439 for any other device sharing the interrupt. (Thanks to Stian
11442 Toshiba driver update (John Belmonte)
11444 Return only 0 or 1 for our interrupt handler status (Andrew
11450 Fixed a reported problem where multiple (nested) ElseIf()
11451 statements were not handled correctly by the compiler, resulting
11452 in incorrect warnings and incorrect AML code. This was a problem
11453 in both the ASL parser and the code generator.
11458 Added changes to existing interfaces, new exception codes, and new
11459 text concerning reference count object management versus garbage
11462 ----------------------------------------
11463 09 May 2003. Summary of changes for version 20030509.
11466 1) ACPI CA Core Subsystem:
11468 Changed the subsystem initialization sequence to hold off
11469 installation of address space handlers until the hardware has been
11470 initialized and the system has entered ACPI mode. This is because
11471 the installation of space handlers can cause _REG methods to be
11472 run. Previously, the _REG methods could potentially be run before
11473 ACPI mode was enabled.
11475 Fixed some memory leak issues related to address space handler and
11476 notify handler installation. There were some problems with the
11477 reference count mechanism caused by the fact that the handler
11478 objects are shared across several namespace objects.
11480 Fixed a reported problem where reference counts within the
11481 namespace were not properly updated when named objects created by
11482 method execution were deleted.
11484 Fixed a reported problem where multiple SSDTs caused a deletion
11485 issue during subsystem termination. Restructured the table data
11486 structures to simplify the linked lists and the related code.
11488 Fixed a problem where the table ID associated with secondary
11489 tables (SSDTs) was not being propagated into the namespace objects
11490 created by those tables. This would only present a problem for
11491 tables that are unloaded at run-time, however.
11493 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11494 type as the length parameter (instead of UINT32).
11496 Solved a long-standing problem where an ALREADY_EXISTS error
11497 appears on various systems. This problem could happen when there
11498 are multiple PCI_Config operation regions under a single PCI root
11499 bus. This doesn't happen very frequently, but there are some
11500 systems that do this in the ASL.
11502 Fixed a reported problem where the internal DeleteNode function
11503 was incorrectly handling the case where a namespace node was the
11504 first in the parent's child list, and had additional peers (not
11505 the only child, but first in the list of children.)
11507 Code and Data Size: Current core subsystem library sizes are shown
11508 below. These are the code and data sizes for the acpica.lib
11509 produced by the Microsoft Visual C++ 6.0 compiler, and these
11510 values do not include any ACPI driver or OSPM code. The debug
11511 version of the code includes the debug output trace mechanism and
11512 has a much larger code and data size. Note that these values will
11513 vary depending on the efficiency of the compiler and the compiler
11514 options used during generation.
11517 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11518 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11520 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11521 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11526 Allow ":" in OS override string (Ducrot Bruno)
11528 Kobject fix (Greg KH)
11531 3 iASL Compiler/Disassembler:
11533 Fixed a problem in the generation of the C source code files (AML
11534 is emitted in C source statements for BIOS inclusion) where the
11535 Ascii dump that appears within a C comment at the end of each line
11536 could cause a compile time error if the AML sequence happens to
11537 have an open comment or close comment sequence embedded.
11540 ----------------------------------------
11541 24 April 2003. Summary of changes for version 20030424.
11544 1) ACPI CA Core Subsystem:
11546 Support for big-endian systems has been implemented. Most of the
11547 support has been invisibly added behind big-endian versions of the
11548 ACPI_MOVE_* macros.
11550 Fixed a problem in AcpiHwDisableGpeBlock() and
11551 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11552 low level hardware write routine. The offset parameter was
11553 actually eliminated from the low level read/write routines because
11554 they had become obsolete.
11556 Fixed a problem where a handler object was deleted twice during
11557 the removal of a fixed event handler.
11562 A fix for SMP systems with link devices was contributed by
11566 (2.5) Return whether we handled the interrupt in our IRQ handler.
11567 (Linux ISRs no longer return void, so we can propagate the handler
11568 return value from the ACPI CA core back to the OS.)
11574 The ACPI CA Programmer Reference has been updated to reflect new
11575 interfaces and changes to existing interfaces.
11577 ----------------------------------------
11578 28 March 2003. Summary of changes for version 20030328.
11580 1) ACPI CA Core Subsystem:
11582 The GPE Block Device support has been completed. New interfaces
11583 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11584 interfaces (enable, disable, clear, getstatus) have been split
11585 into separate interfaces for Fixed Events and General Purpose
11586 Events (GPEs) in order to support GPE Block Devices properly.
11588 Fixed a problem where the error message "Failed to acquire
11589 semaphore" would appear during operations on the embedded
11592 Code and Data Size: Current core subsystem library sizes are shown
11593 below. These are the code and data sizes for the acpica.lib
11594 produced by the Microsoft Visual C++ 6.0 compiler, and these
11595 values do not include any ACPI driver or OSPM code. The debug
11596 version of the code includes the debug output trace mechanism and
11597 has a much larger code and data size. Note that these values will
11598 vary depending on the efficiency of the compiler and the compiler
11599 options used during generation.
11602 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11603 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11605 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11606 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11609 ----------------------------------------
11610 28 February 2003. Summary of changes for version 20030228.
11613 1) ACPI CA Core Subsystem:
11615 The GPE handling and dispatch code has been completely overhauled
11616 in preparation for support of GPE Block Devices (ID ACPI0006).
11617 This affects internal data structures and code only; there should
11618 be no differences visible externally. One new file has been
11621 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11622 fields that are used to determine the GPE block lengths. The
11623 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11624 structures are ignored. This is per the ACPI specification but it
11625 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11626 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11628 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11629 register to look at the SCI_EN bit. On some machines, this read
11630 causes an SMI event and greatly slows down SCI events. (This may
11631 in fact be the cause of slow battery status response on some
11634 Fixed a problem where a store of a NULL string to a package object
11635 could cause the premature deletion of the object. This was seen
11636 during execution of the battery _BIF method on some systems,
11637 resulting in no battery data being returned.
11639 Added AcpiWalkResources interface to simplify parsing of resource
11642 Code and Data Size: Current core subsystem library sizes are shown
11643 below. These are the code and data sizes for the acpica.lib
11644 produced by the Microsoft Visual C++ 6.0 compiler, and these
11645 values do not include any ACPI driver or OSPM code. The debug
11646 version of the code includes the debug output trace mechanism and
11647 has a much larger code and data size. Note that these values will
11648 vary depending on the efficiency of the compiler and the compiler
11649 options used during generation.
11652 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11653 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11655 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11656 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11661 S3 fixes (Ole Rohne)
11663 Update ACPI PHP driver with to use new acpi_walk_resource API
11666 Add S4BIOS support (Pavel Machek)
11668 Map in entire table before performing checksum (John Stultz)
11670 Expand the mem= cmdline to allow the specification of reserved and
11671 ACPI DATA blocks (Pavel Machek)
11673 Never use ACPI on VISWS
11675 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
11677 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
11678 causing us to think that some systems support C2 when they really
11681 Do not count processor objects for non-present CPUs (Thanks to
11687 Fixed a problem where ASL include files could not be found and
11690 Added support for the _PDC reserved name.
11693 ----------------------------------------
11694 22 January 2003. Summary of changes for version 20030122.
11697 1) ACPI CA Core Subsystem:
11699 Added a check for constructs of the form: Store (Local0, Local0)
11700 where Local0 is not initialized. Apparently, some BIOS
11701 programmers believe that this is a NOOP. Since this store doesn't
11702 do anything anyway, the new prototype behavior will ignore this
11703 error. This is a case where we can relax the strict checking in
11704 the interpreter in the name of compatibility.
11709 The AcpiSrc Source Conversion Utility has been released with the
11710 Linux package for the first time. This is the utility that is
11711 used to convert the ACPI CA base source code to the Linux version.
11713 (Both) Handle P_BLK lengths shorter than 6 more gracefully
11715 (Both) Move more headers to include/acpi, and delete an unused
11718 (Both) Move drivers/acpi/include directory to include/acpi
11720 (Both) Boot functions don't use cmdline, so don't pass it around
11722 (Both) Remove include of unused header (Adrian Bunk)
11724 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
11726 former now also includes the latter, acpiphp.h only needs the one,
11729 (2.5) Make it possible to select method of bios restoring after S3
11730 resume. [=> no more ugly ifdefs] (Pavel Machek)
11732 (2.5) Make proc write interfaces work (Pavel Machek)
11734 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
11736 (2.5) Break out ACPI Perf code into its own module, under cpufreq
11737 (Dominik Brodowski)
11739 (2.4) S4BIOS support (Ducrot Bruno)
11741 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
11747 Added support to disassemble SSDT and PSDTs.
11749 Implemented support to obtain SSDTs from the Windows registry if
11753 ----------------------------------------
11754 09 January 2003. Summary of changes for version 20030109.
11756 1) ACPI CA Core Subsystem:
11758 Changed the behavior of the internal Buffer-to-String conversion
11759 function. The current ACPI specification states that the contents
11760 of the buffer are "converted to a string of two-character
11761 hexadecimal numbers, each separated by a space". Unfortunately,
11762 this definition is not backwards compatible with existing ACPI 1.0
11763 implementations (although the behavior was not defined in the ACPI
11764 1.0 specification). The new behavior simply copies data from the
11765 buffer to the string until a null character is found or the end of
11766 the buffer is reached. The new String object is always null
11767 terminated. This problem was seen during the generation of _BIF
11768 battery data where incorrect strings were returned for battery
11769 type, etc. This will also require an errata to the ACPI
11772 Renamed all instances of NATIVE_UINT and NATIVE_INT to
11773 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
11775 Copyright in all module headers (both Linux and non-Linux) has be
11778 Code and Data Size: Current core subsystem library sizes are shown
11779 below. These are the code and data sizes for the acpica.lib
11780 produced by the Microsoft Visual C++ 6.0 compiler, and these
11781 values do not include any ACPI driver or OSPM code. The debug
11782 version of the code includes the debug output trace mechanism and
11783 has a much larger code and data size. Note that these values will
11784 vary depending on the efficiency of the compiler and the compiler
11785 options used during generation.
11788 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11789 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11791 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11792 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11797 Fixed an oops on module insertion/removal (Matthew Tippett)
11799 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
11801 (2.5) Replace pr_debug (Randy Dunlap)
11803 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
11805 (Both) Eliminate spawning of thread from timer callback, in favor
11808 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
11810 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
11812 (Both) Add missing statics to button.c (Pavel Machek)
11814 Several changes have been made to the source code translation
11815 utility that generates the Linux Code in order to make the code
11818 All typedefs on structs and unions have been removed in keeping
11819 with the Linux coding style.
11821 Removed the non-Linux SourceSafe module revision number from each
11824 Completed major overhaul of symbols to be lowercased for linux.
11825 Doubled the number of symbols that are lowercased.
11827 Fixed a problem where identifiers within procedure headers and
11828 within quotes were not fully lower cased (they were left with a
11831 Some C macros whose only purpose is to allow the generation of 16-
11832 bit code are now completely removed in the Linux code, increasing
11833 readability and maintainability.
11835 ----------------------------------------
11837 12 December 2002. Summary of changes for version 20021212.
11840 1) ACPI CA Core Subsystem:
11842 Fixed a problem where the creation of a zero-length AML Buffer
11843 would cause a fault.
11845 Fixed a problem where a Buffer object that pointed to a static AML
11846 buffer (in an ACPI table) could inadvertently be deleted, causing
11849 Fixed a problem where a user buffer (passed in to the external
11850 ACPI CA interfaces) could be overwritten if the buffer was too
11851 small to complete the operation, causing memory corruption.
11853 Fixed a problem in the Buffer-to-String conversion code where a
11854 string of length one was always returned, regardless of the size
11855 of the input Buffer object.
11857 Removed the NATIVE_CHAR data type across the entire source due to
11858 lack of need and lack of consistent use.
11860 Code and Data Size: Current core subsystem library sizes are shown
11861 below. These are the code and data sizes for the acpica.lib
11862 produced by the Microsoft Visual C++ 6.0 compiler, and these
11863 values do not include any ACPI driver or OSPM code. The debug
11864 version of the code includes the debug output trace mechanism and
11865 has a much larger code and data size. Note that these values will
11866 vary depending on the efficiency of the compiler and the compiler
11867 options used during generation.
11870 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11871 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11873 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11874 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11877 ----------------------------------------
11878 05 December 2002. Summary of changes for version 20021205.
11880 1) ACPI CA Core Subsystem:
11882 Fixed a problem where a store to a String or Buffer object could
11883 cause corruption of the DSDT if the object type being stored was
11884 the same as the target object type and the length of the object
11885 being stored was equal to or smaller than the original (existing)
11886 target object. This was seen to cause corruption of battery _BIF
11887 buffers if the _BIF method modified the buffer on the fly.
11889 Fixed a problem where an internal error was generated if a control
11890 method invocation was used in an OperationRegion, Buffer, or
11891 Package declaration. This was caused by the deferred parsing of
11892 the control method and thus the deferred creation of the internal
11893 method object. The solution to this problem was to create the
11894 internal method object at the moment the method is encountered in
11895 the first pass - so that subsequent references to the method will
11896 able to obtain the required parameter count and thus properly
11897 parse the method invocation. This problem presented itself as an
11898 AE_AML_INTERNAL during the pass 1 parse phase during table load.
11900 Fixed a problem where the internal String object copy routine did
11901 not always allocate sufficient memory for the target String object
11902 and caused memory corruption. This problem was seen to cause
11903 "Allocation already present in list!" errors as memory allocation
11906 Implemented a new function for the evaluation of namespace objects
11907 that allows the specification of the allowable return object
11908 types. This simplifies a lot of code that checks for a return
11909 object of one or more specific objects returned from the
11910 evaluation (such as _STA, etc.) This may become and external
11911 function if it would be useful to ACPI-related drivers.
11913 Completed another round of prefixing #defines with "ACPI_" for
11916 Completed additional code restructuring to allow more modular
11917 linking for iASL compiler and AcpiExec. Several files were split
11918 creating new files. New files: nsparse.c dsinit.c evgpe.c
11920 Implemented an abort mechanism to terminate an executing control
11921 method via the AML debugger. This feature is useful for debugging
11922 control methods that depend (wait) for specific hardware
11925 Code and Data Size: Current core subsystem library sizes are shown
11926 below. These are the code and data sizes for the acpica.lib
11927 produced by the Microsoft Visual C++ 6.0 compiler, and these
11928 values do not include any ACPI driver or OSPM code. The debug
11929 version of the code includes the debug output trace mechanism and
11930 has a much larger code and data size. Note that these values will
11931 vary depending on the efficiency of the compiler and the compiler
11932 options used during generation.
11935 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11936 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11938 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11939 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11942 2) iASL Compiler/Disassembler
11944 Fixed a compiler code generation problem for "Interrupt" Resource
11945 Descriptors. If specified in the ASL, the optional "Resource
11946 Source Index" and "Resource Source" fields were not inserted into
11947 the correct location within the AML resource descriptor, creating
11948 an invalid descriptor.
11950 Fixed a disassembler problem for "Interrupt" resource descriptors.
11951 The optional "Resource Source Index" and "Resource Source" fields
11955 ----------------------------------------
11956 22 November 2002. Summary of changes for version 20021122.
11959 1) ACPI CA Core Subsystem:
11961 Fixed a reported problem where an object stored to a Method Local
11962 or Arg was not copied to a new object during the store - the
11963 object pointer was simply copied to the Local/Arg. This caused
11964 all subsequent operations on the Local/Arg to also affect the
11965 original source of the store operation.
11967 Fixed a problem where a store operation to a Method Local or Arg
11968 was not completed properly if the Local/Arg contained a reference
11969 (from RefOf) to a named field. The general-purpose store-to-
11970 namespace-node code is now used so that this case is handled
11973 Fixed a problem where the internal object copy routine would cause
11974 a protection fault if the object being copied was a Package and
11975 contained either 1) a NULL package element or 2) a nested sub-
11978 Fixed a problem with the GPE initialization that resulted from an
11979 ambiguity in the ACPI specification. One section of the
11980 specification states that both the address and length of the GPE
11981 block must be zero if the block is not supported. Another section
11982 implies that only the address need be zero if the block is not
11983 supported. The code has been changed so that both the address and
11984 the length must be non-zero to indicate a valid GPE block (i.e.,
11985 if either the address or the length is zero, the GPE block is
11988 Code and Data Size: Current core subsystem library sizes are shown
11989 below. These are the code and data sizes for the acpica.lib
11990 produced by the Microsoft Visual C++ 6.0 compiler, and these
11991 values do not include any ACPI driver or OSPM code. The debug
11992 version of the code includes the debug output trace mechanism and
11993 has a much larger code and data size. Note that these values will
11994 vary depending on the efficiency of the compiler and the compiler
11995 options used during generation.
11998 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11999 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12001 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12002 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12007 Cleaned up EC driver. Exported an external EC read/write
12008 interface. By going through this, other drivers (most notably
12009 sonypi) will be able to serialize access to the EC.
12012 3) iASL Compiler/Disassembler
12014 Implemented support to optionally generate include files for both
12015 ASM and C (the -i switch). This simplifies BIOS development by
12016 automatically creating include files that contain external
12017 declarations for the symbols that are created within the
12019 (optionally generated) ASM and C AML source files.
12022 ----------------------------------------
12023 15 November 2002. Summary of changes for version 20021115.
12025 1) ACPI CA Core Subsystem:
12027 Fixed a memory leak problem where an error during resolution of
12029 method arguments during a method invocation from another method
12030 failed to cleanup properly by deleting all successfully resolved
12033 Fixed a problem where the target of the Index() operator was not
12034 correctly constructed if the source object was a package. This
12035 problem has not been detected because the use of a target operand
12036 with Index() is very rare.
12038 Fixed a problem with the Index() operator where an attempt was
12039 made to delete the operand objects twice.
12041 Fixed a problem where an attempt was made to delete an operand
12042 twice during execution of the CondRefOf() operator if the target
12045 Implemented the first of perhaps several internal create object
12046 functions that create and initialize a specific object type. This
12047 consolidates duplicated code wherever the object is created, thus
12048 shrinking the size of the subsystem.
12050 Implemented improved debug/error messages for errors that occur
12051 during nested method invocations. All executing method pathnames
12052 are displayed (with the error) as the call stack is unwound - thus
12055 Fixed a problem introduced in the 10/02 release that caused
12056 premature deletion of a buffer object if a buffer was used as an
12057 ASL operand where an integer operand is required (Thus causing an
12058 implicit object conversion from Buffer to Integer.) The change in
12059 the 10/02 release was attempting to fix a memory leak (albeit
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: 71.9K Code, 9.1K Data, 81.0K Total
12073 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12075 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12076 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12081 Changed the implementation of the ACPI semaphores to use down()
12082 instead of down_interruptable(). It is important that the
12083 execution of ACPI control methods not be interrupted by signals.
12084 Methods must run to completion, or the system may be left in an
12085 unknown/unstable state.
12087 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
12091 3) iASL Compiler/Disassembler
12094 Changed the default location of output files. All output files
12095 are now placed in the current directory by default instead of in
12096 the directory of the source file. This change may affect some
12097 existing makefiles, but it brings the behavior of the compiler in
12098 line with other similar tools. The location of the output files
12099 can be overridden with the -p command line switch.
12102 ----------------------------------------
12103 11 November 2002. Summary of changes for version 20021111.
12106 0) ACPI Specification 2.0B is released and is now available at:
12107 http://www.acpi.info/index.html
12110 1) ACPI CA Core Subsystem:
12112 Implemented support for the ACPI 2.0 SMBus Operation Regions.
12113 This includes the early detection and handoff of the request to
12114 the SMBus region handler (avoiding all of the complex field
12115 support code), and support for the bidirectional return packet
12116 from an SMBus write operation. This paves the way for the
12117 development of SMBus drivers in each host operating system.
12119 Fixed a problem where the semaphore WAIT_FOREVER constant was
12120 defined as 32 bits, but must be 16 bits according to the ACPI
12121 specification. This had the side effect of causing ASL
12122 Mutex/Event timeouts even though the ASL code requested a wait
12123 forever. Changed all internal references to the ACPI timeout
12124 parameter to 16 bits to prevent future problems. Changed the name
12125 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
12127 Code and Data Size: Current core subsystem library sizes are shown
12128 below. These are the code and data sizes for the acpica.lib
12129 produced by the Microsoft Visual C++ 6.0 compiler, and these
12130 values do not include any ACPI driver or OSPM code. The debug
12131 version of the code includes the debug output trace mechanism and
12132 has a much larger code and data size. Note that these values will
12133 vary depending on the efficiency of the compiler and the compiler
12134 options used during generation.
12137 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12138 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12140 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12141 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12146 Module loading/unloading fixes (John Cagle)
12149 3) iASL Compiler/Disassembler
12151 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
12153 Implemented support for the disassembly of all SMBus protocol
12154 keywords (SMBQuick, SMBWord, etc.)
12156 ----------------------------------------
12157 01 November 2002. Summary of changes for version 20021101.
12160 1) ACPI CA Core Subsystem:
12162 Fixed a problem where platforms that have a GPE1 block but no GPE0
12163 block were not handled correctly. This resulted in a "GPE
12164 overlap" error message. GPE0 is no longer required.
12166 Removed code added in the previous release that inserted nodes
12167 into the namespace in alphabetical order. This caused some side-
12168 effects on various machines. The root cause of the problem is
12169 still under investigation since in theory, the internal ordering
12170 of the namespace nodes should not matter.
12173 Enhanced error reporting for the case where a named object is not
12174 found during control method execution. The full ACPI namepath
12175 (name reference) of the object that was not found is displayed in
12178 Note: as a result of the overhaul of the namespace object types in
12179 the previous release, the namespace nodes for the predefined
12180 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
12181 instead of ACPI_TYPE_ANY. This simplifies the namespace
12182 management code but may affect code that walks the namespace tree
12183 looking for specific object types.
12185 Code and Data Size: Current core subsystem library sizes are shown
12186 below. These are the code and data sizes for the acpica.lib
12187 produced by the Microsoft Visual C++ 6.0 compiler, and these
12188 values do not include any ACPI driver or OSPM code. The debug
12189 version of the code includes the debug output trace mechanism and
12190 has a much larger code and data size. Note that these values will
12191 vary depending on the efficiency of the compiler and the compiler
12192 options used during generation.
12195 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12196 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12198 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12199 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12204 Fixed a problem introduced in the previous release where the
12205 Processor and Thermal objects were not recognized and installed in
12206 /proc. This was related to the scope type change described above.
12209 3) iASL Compiler/Disassembler
12211 Implemented the -g option to get all of the required ACPI tables
12212 from the registry and save them to files (Windows version of the
12213 compiler only.) The required tables are the FADT, FACS, and DSDT.
12215 Added ACPI table checksum validation during table disassembly in
12216 order to catch corrupted tables.
12219 ----------------------------------------
12220 22 October 2002. Summary of changes for version 20021022.
12222 1) ACPI CA Core Subsystem:
12224 Implemented a restriction on the Scope operator that the target
12225 must already exist in the namespace at the time the operator is
12226 encountered (during table load or method execution). In other
12227 words, forward references are not allowed and Scope() cannot
12228 create a new object. This changes the previous behavior where the
12229 interpreter would create the name if not found. This new behavior
12230 correctly enables the search-to-root algorithm during namespace
12231 lookup of the target name. Because of this upsearch, this fixes
12232 the known Compaq _SB_.OKEC problem and makes both the AML
12233 interpreter and iASL compiler compatible with other ACPI
12236 Completed a major overhaul of the internal ACPI object types for
12237 the ACPI Namespace and the associated operand objects. Many of
12238 these types had become obsolete with the introduction of the two-
12239 pass namespace load. This cleanup simplifies the code and makes
12240 the entire namespace load mechanism much clearer and easier to
12243 Improved debug output for tracking scope opening/closing to help
12244 diagnose scoping issues. The old scope name as well as the new
12245 scope name are displayed. Also improved error messages for
12246 problems with ASL Mutex objects and error messages for GPE
12249 Cleaned up the namespace dump code, removed obsolete code.
12251 All string output (for all namespace/object dumps) now uses the
12252 common ACPI string output procedure which handles escapes properly
12253 and does not emit non-printable characters.
12255 Fixed some issues with constants in the 64-bit version of the
12256 local C library (utclib.c)
12261 EC Driver: No longer attempts to acquire the Global Lock at
12265 3) iASL Compiler/Disassembler
12267 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12268 2 opcodes outside of a control method. This means that the
12269 "executable" operators (versus the "namespace" operators) cannot
12270 be used at the table level; they can only be used within a control
12273 Implemented the restriction on the Scope() operator where the
12274 target must already exist in the namespace at the time the
12275 operator is encountered (during ASL compilation). In other words,
12276 forward references are not allowed and Scope() cannot create a new
12277 object. This makes the iASL compiler compatible with other ACPI
12278 implementations and makes the Scope() implementation adhere to the
12279 ACPI specification.
12281 Fixed a problem where namepath optimization for the Alias operator
12282 was optimizing the wrong path (of the two namepaths.) This caused
12283 a "Missing alias link" error message.
12285 Fixed a problem where an "unknown reserved name" warning could be
12286 incorrectly generated for names like "_SB" when the trailing
12287 underscore is not used in the original ASL.
12289 Fixed a problem where the reserved name check did not handle
12290 NamePaths with multiple NameSegs correctly. The first nameseg of
12291 the NamePath was examined instead of the last NameSeg.
12294 ----------------------------------------
12296 02 October 2002. Summary of changes for this release.
12299 1) ACPI CA Core Subsystem version 20021002:
12301 Fixed a problem where a store/copy of a string to an existing
12302 string did not always set the string length properly in the String
12305 Fixed a reported problem with the ToString operator where the
12306 behavior was identical to the ToHexString operator instead of just
12307 simply converting a raw buffer to a string data type.
12309 Fixed a problem where CopyObject and the other "explicit"
12310 conversion operators were not updating the internal namespace node
12311 type as part of the store operation.
12313 Fixed a memory leak during implicit source operand conversion
12314 where the original object was not deleted if it was converted to a
12315 new object of a different type.
12317 Enhanced error messages for all problems associated with namespace
12318 lookups. Common procedure generates and prints the lookup name as
12319 well as the formatted status.
12321 Completed implementation of a new design for the Alias support
12322 within the namespace. The existing design did not handle the case
12323 where a new object was assigned to one of the two names due to the
12324 use of an explicit conversion operator, resulting in the two names
12325 pointing to two different objects. The new design simply points
12326 the Alias name to the original name node - not to the object.
12327 This results in a level of indirection that must be handled in the
12328 name resolution mechanism.
12330 Code and Data Size: Current core subsystem library sizes are shown
12331 below. These are the code and data sizes for the acpica.lib
12332 produced by the Microsoft Visual C++ 6.0 compiler, and these
12333 values do not include any ACPI driver or OSPM code. The debug
12334 version of the code includes the debug output trace mechanism and
12335 has a larger code and data size. Note that these values will vary
12336 depending on the efficiency of the compiler and the compiler
12337 options used during generation.
12340 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12341 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12343 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12344 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12349 Initialize thermal driver's timer before it is used. (Knut
12352 Allow handling negative celsius values. (Kochi Takayoshi)
12354 Fix thermal management and make trip points. R/W (Pavel Machek)
12356 Fix /proc/acpi/sleep. (P. Christeas)
12358 IA64 fixes. (David Mosberger)
12360 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12362 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12366 3) iASL Compiler/Disassembler
12368 Clarified some warning/error messages.
12371 ----------------------------------------
12372 18 September 2002. Summary of changes for this release.
12375 1) ACPI CA Core Subsystem version 20020918:
12377 Fixed a reported problem with reference chaining (via the Index()
12378 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12379 The definition of these operators includes the dereferencing of
12380 all chained references to return information on the base object.
12382 Fixed a problem with stores to indexed package elements - the
12383 existing code would not complete the store if an "implicit
12384 conversion" was not performed. In other words, if the existing
12385 object (package element) was to be replaced completely, the code
12386 didn't handle this case.
12388 Relaxed typechecking on the ASL "Scope" operator to allow the
12389 target name to refer to an object of type Integer, String, or
12390 Buffer, in addition to the scoping object types (Device,
12391 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12392 This allows existing AML code that has workarounds for a bug in
12393 Windows to function properly. A warning is issued, however. This
12394 affects both the AML interpreter and the iASL compiler. Below is
12395 an example of this type of ASL code:
12401 Fixed some reported problems with 64-bit integer support in the
12402 local implementation of C library functions (clib.c)
12407 Use ACPI fix map region instead of IOAPIC region, since it is
12408 undefined in non-SMP.
12410 Ensure that the SCI has the proper polarity and trigger, even on
12411 systems that do not have an interrupt override entry in the MADT.
12413 2.5 big driver reorganization (Pat Mochel)
12415 Use early table mapping code from acpitable.c (Andi Kleen)
12417 New blacklist entries (Andi Kleen)
12419 Blacklist improvements. Split blacklist code out into a separate
12420 file. Move checking the blacklist to very early. Previously, we
12421 would use ACPI tables, and then halfway through init, check the
12422 blacklist -- too late. Now, it's early enough to completely fall-
12426 3) iASL Compiler/Disassembler version 20020918:
12428 Fixed a problem where the typechecking code didn't know that an
12429 alias could point to a method. In other words, aliases were not
12430 being dereferenced during typechecking.
12433 ----------------------------------------
12434 29 August 2002. Summary of changes for this release.
12436 1) ACPI CA Core Subsystem Version 20020829:
12438 If the target of a Scope() operator already exists, it must be an
12439 object type that actually opens a scope -- such as a Device,
12440 Method, Scope, etc. This is a fatal runtime error. Similar error
12441 check has been added to the iASL compiler also.
12443 Tightened up the namespace load to disallow multiple names in the
12444 same scope. This previously was allowed if both objects were of
12445 the same type. (i.e., a lookup was the same as entering a new
12451 Ensure that the ACPI interrupt has the proper trigger and
12454 local_irq_disable is extraneous. (Matthew Wilcox)
12456 Make "acpi=off" actually do what it says, and not use the ACPI
12457 interpreter *or* the tables.
12459 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12463 3) iASL Compiler/Disassembler Version 20020829:
12465 Implemented namepath optimization for name declarations. For
12466 example, a declaration like "Method (\_SB_.ABCD)" would get
12467 optimized to "Method (ABCD)" if the declaration is within the
12468 \_SB_ scope. This optimization is in addition to the named
12469 reference path optimization first released in the previous
12470 version. This would seem to complete all possible optimizations
12471 for namepaths within the ASL/AML.
12473 If the target of a Scope() operator already exists, it must be an
12474 object type that actually opens a scope -- such as a Device,
12475 Method, Scope, etc.
12477 Implemented a check and warning for unreachable code in the same
12478 block below a Return() statement.
12480 Fixed a problem where the listing file was not generated if the
12481 compiler aborted if the maximum error count was exceeded (200).
12483 Fixed a problem where the typechecking of method return values was
12484 broken. This includes the check for a return value when the
12485 method is invoked as a TermArg (a return value is expected.)
12487 Fixed a reported problem where EOF conditions during a quoted
12488 string or comment caused a fault.
12491 ----------------------------------------
12492 15 August 2002. Summary of changes for this release.
12494 1) ACPI CA Core Subsystem Version 20020815:
12496 Fixed a reported problem where a Store to a method argument that
12497 contains a reference did not perform the indirect store correctly.
12498 This problem was created during the conversion to the new
12499 reference object model - the indirect store to a method argument
12500 code was not updated to reflect the new model.
12502 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12503 handle corner cases, and improve code legibility (Kochi Takayoshi)
12505 Fixed a problem with the pathname parsing for the carat (^)
12506 prefix. The heavy use of the carat operator by the new namepath
12507 optimization in the iASL compiler uncovered a problem with the AML
12508 interpreter handling of this prefix. In the case where one or
12509 more carats precede a single nameseg, the nameseg was treated as
12510 standalone and the search rule (to root) was inadvertently
12511 applied. This could cause both the iASL compiler and the
12512 interpreter to find the wrong object or to miss the error that
12513 should occur if the object does not exist at that exact pathname.
12515 Found and fixed the problem where the HP Pavilion DSDT would not
12516 load. This was a relatively minor tweak to the table loading code
12517 (a problem caused by the unexpected encounter with a method
12518 invocation not within a control method), but it does not solve the
12519 overall issue of the execution of AML code at the table level.
12520 This investigation is still ongoing.
12522 Code and Data Size: Current core subsystem library sizes are shown
12523 below. These are the code and data sizes for the acpica.lib
12524 produced by the Microsoft Visual C++ 6.0 compiler, and these
12525 values do not include any ACPI driver or OSPM code. The debug
12526 version of the code includes the debug output trace mechanism and
12527 has a larger code and data size. Note that these values will vary
12528 depending on the efficiency of the compiler and the compiler
12529 options used during generation.
12532 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12533 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12535 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12536 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12541 Remove redundant slab.h include (Brad Hards)
12543 Fix several bugs in thermal.c (Herbert Nachtnebel)
12545 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12547 Change acpi_system_suspend to use updated irq functions (Pavel
12550 Export acpi_get_firmware_table (Matthew Wilcox)
12552 Use proper root proc entry for ACPI (Kochi Takayoshi)
12554 Fix early-boot table parsing (Bjorn Helgaas)
12557 3) iASL Compiler/Disassembler
12559 Reworked the compiler options to make them more consistent and to
12560 use two-letter options where appropriate. We were running out of
12561 sensible letters. This may break some makefiles, so check the
12562 current options list by invoking the compiler with no parameters.
12564 Completed the design and implementation of the ASL namepath
12565 optimization option for the compiler. This option optimizes all
12566 references to named objects to the shortest possible path. The
12567 first attempt tries to utilize a single nameseg (4 characters) and
12568 the "search-to-root" algorithm used by the interpreter. If that
12569 cannot be used (because either the name is not in the search path
12570 or there is a conflict with another object with the same name),
12571 the pathname is optimized using the carat prefix (usually a
12572 shorter string than specifying the entire path from the root.)
12574 Implemented support to obtain the DSDT from the Windows registry
12575 (when the disassembly option is specified with no input file).
12576 Added this code as the implementation for AcpiOsTableOverride in
12577 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12578 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12579 function in the DOS OSL to make the disassembler truly OS
12582 Implemented a new option to disassemble and compile in one step.
12583 When used without an input filename, this option will grab the
12584 DSDT from the local machine, disassemble it, and compile it in one
12587 Added a warning message for invalid escapes (a backslash followed
12588 by any character other than the allowable escapes). This catches
12589 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12591 Also, there are numerous instances in the ACPI specification where
12594 Added a compiler option to disable all optimizations. This is
12595 basically the "compatibility mode" because by using this option,
12596 the AML code will come out exactly the same as other ASL
12599 Added error messages for incorrectly ordered dependent resource
12600 functions. This includes: missing EndDependentFn macro at end of
12601 dependent resource list, nested dependent function macros (both
12602 start and end), and missing StartDependentFn macro. These are
12603 common errors that should be caught at compile time.
12605 Implemented _OSI support for the disassembler and compiler. _OSI
12606 must be included in the namespace for proper disassembly (because
12607 the disassembler must know the number of arguments.)
12609 Added an "optimization" message type that is optional (off by
12610 default). This message is used for all optimizations - including
12611 constant folding, integer optimization, and namepath optimization.
12613 ----------------------------------------
12614 25 July 2002. Summary of changes for this release.
12617 1) ACPI CA Core Subsystem Version 20020725:
12619 The AML Disassembler has been enhanced to produce compilable ASL
12620 code and has been integrated into the iASL compiler (see below) as
12621 well as the single-step disassembly for the AML debugger and the
12622 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12623 resource templates and macros are fully supported. The
12624 disassembler has been tested on over 30 different AML files,
12625 producing identical AML when the resulting disassembled ASL file
12626 is recompiled with the same ASL compiler.
12628 Modified the Resource Manager to allow zero interrupts and zero
12629 dma channels during the GetCurrentResources call. This was
12630 causing problems on some platforms.
12632 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12633 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12636 Code and Data Size: Current core subsystem library sizes are shown
12637 below. These are the code and data sizes for the acpica.lib
12638 produced by the Microsoft Visual C++ 6.0 compiler, and these
12639 values do not include any ACPI driver or OSPM code. The debug
12640 version of the code includes the debug output trace mechanism and
12641 has a larger code and data size. Note that these values will vary
12642 depending on the efficiency of the compiler and the compiler
12643 options used during generation.
12646 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12647 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12649 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12650 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12655 Fixed a panic in the EC driver (Dominik Brodowski)
12657 Implemented checksum of the R/XSDT itself during Linux table scan
12663 The AML disassembler is integrated into the compiler. The "-d"
12664 option invokes the disassembler to completely disassemble an
12665 input AML file, producing as output a text ASL file with the
12666 extension ".dsl" (to avoid name collisions with existing .asl
12667 source files.) A future enhancement will allow the disassembler
12668 to obtain the BIOS DSDT from the registry under Windows.
12670 Fixed a problem with the VendorShort and VendorLong resource
12671 descriptors where an invalid AML sequence was created.
12673 Implemented a fix for BufferData term in the ASL parser. It was
12674 inadvertently defined twice, allowing invalid syntax to pass and
12675 causing reduction conflicts.
12677 Fixed a problem where the Ones opcode could get converted to a
12678 value of zero if "Ones" was used where a byte, word or dword value
12679 was expected. The 64-bit value is now truncated to the correct
12680 size with the correct value.
12684 ----------------------------------------
12685 02 July 2002. Summary of changes for this release.
12688 1) ACPI CA Core Subsystem Version 20020702:
12690 The Table Manager code has been restructured to add several new
12691 features. Tables that are not required by the core subsystem
12692 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
12693 validated in any way and are returned from AcpiGetFirmwareTable if
12694 requested. The AcpiOsTableOverride interface is now called for
12695 each table that is loaded by the subsystem in order to allow the
12696 host to override any table it chooses. Previously, only the DSDT
12697 could be overridden. Added one new files, tbrsdt.c and
12700 Fixed a problem with the conversion of internal package objects to
12701 external objects (when a package is returned from a control
12702 method.) The return buffer length was set to zero instead of the
12703 proper length of the package object.
12705 Fixed a reported problem with the use of the RefOf and DeRefOf
12706 operators when passing reference arguments to control methods. A
12707 new type of Reference object is used internally for references
12708 produced by the RefOf operator.
12710 Added additional error messages in the Resource Manager to explain
12711 AE_BAD_DATA errors when they occur during resource parsing.
12713 Split the AcpiEnableSubsystem into two primitives to enable a
12714 finer granularity initialization sequence. These two calls should
12715 be called in this order: AcpiEnableSubsystem (flags),
12716 AcpiInitializeObjects (flags). The flags parameter remains the
12722 Updated the ACPI utilities module to understand the new style of
12723 fully resolved package objects that are now returned from the core
12724 subsystem. This eliminates errors of the form:
12726 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
12727 acpi_utils-0430 [145] acpi_evaluate_reference:
12728 Invalid element in package (not a device reference)
12730 The method evaluation utility uses the new buffer allocation
12731 scheme instead of calling AcpiEvaluate Object twice.
12733 Added support for ECDT. This allows the use of the Embedded
12735 Controller before the namespace has been fully initialized, which
12736 is necessary for ACPI 2.0 support, and for some laptops to
12737 initialize properly. (Laptops using ECDT are still rare, so only
12738 limited testing was performed of the added functionality.)
12740 Fixed memory leaks in the EC driver.
12742 Eliminated a brittle code structure in acpi_bus_init().
12744 Eliminated the acpi_evaluate() helper function in utils.c. It is
12745 no longer needed since acpi_evaluate_object can optionally
12746 allocate memory for the return object.
12748 Implemented fix for keyboard hang when getting battery readings on
12749 some systems (Stephen White)
12751 PCI IRQ routing update (Dominik Brodowski)
12753 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
12756 ----------------------------------------
12757 11 June 2002. Summary of changes for this release.
12760 1) ACPI CA Core Subsystem Version 20020611:
12762 Fixed a reported problem where constants such as Zero and One
12763 appearing within _PRT packages were not handled correctly within
12764 the resource manager code. Originally reported against the ASL
12765 compiler because the code generator now optimizes integers to
12766 their minimal AML representation (i.e. AML constants if possible.)
12767 The _PRT code now handles all AML constant opcodes correctly
12768 (Zero, One, Ones, Revision).
12770 Fixed a problem with the Concatenate operator in the AML
12771 interpreter where a buffer result object was incorrectly marked as
12772 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
12774 All package sub-objects are now fully resolved before they are
12775 returned from the external ACPI interfaces. This means that name
12776 strings are resolved to object handles, and constant operators
12777 (Zero, One, Ones, Revision) are resolved to Integers.
12779 Implemented immediate resolution of the AML Constant opcodes
12780 (Zero, One, Ones, Revision) to Integer objects upon detection
12781 within the AML stream. This has simplified and reduced the
12782 generated code size of the subsystem by eliminating about 10
12783 switch statements for these constants (which previously were
12784 contained in Reference objects.) The complicating issues are that
12785 the Zero opcode is used as a "placeholder" for unspecified
12786 optional target operands and stores to constants are defined to be
12789 Code and Data Size: Current core subsystem library sizes are shown
12790 below. These are the code and data sizes for the acpica.lib
12791 produced by the Microsoft Visual C++ 6.0 compiler, and these
12792 values do not include any ACPI driver or OSPM code. The debug
12793 version of the code includes the debug output trace mechanism and
12794 has a larger code and data size. Note that these values will vary
12795 depending on the efficiency of the compiler and the compiler
12796 options used during generation.
12799 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12800 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12802 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12803 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12809 Added preliminary support for obtaining _TRA data for PCI root
12810 bridges (Bjorn Helgaas).
12813 3) iASL Compiler Version X2046:
12815 Fixed a problem where the "_DDN" reserved name was defined to be a
12816 control method with one argument. There are no arguments, and
12817 _DDN does not have to be a control method.
12819 Fixed a problem with the Linux version of the compiler where the
12820 source lines printed with error messages were the wrong lines.
12821 This turned out to be the "LF versus CR/LF" difference between
12822 Windows and Unix. This appears to be the longstanding issue
12823 concerning listing output and error messages.
12825 Fixed a problem with the Linux version of compiler where opcode
12826 names within error messages were wrong. This was caused by a
12827 slight difference in the output of the Flex tool on Linux versus
12830 Fixed a problem with the Linux compiler where the hex output files
12831 contained some garbage data caused by an internal buffer overrun.
12834 ----------------------------------------
12835 17 May 2002. Summary of changes for this release.
12838 1) ACPI CA Core Subsystem Version 20020517:
12840 Implemented a workaround to an BIOS bug discovered on the HP
12841 OmniBook where the FADT revision number and the table size are
12842 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
12843 behavior is to fallback to using only the ACPI 1.0 fields of the
12844 FADT if the table is too small to be a ACPI 2.0 table as claimed
12845 by the revision number. Although this is a BIOS bug, this is a
12846 case where the workaround is simple enough and with no side
12847 effects, so it seemed prudent to add it. A warning message is
12850 Implemented minimum size checks for the fixed-length ACPI tables -
12851 - the FADT and FACS, as well as consistency checks between the
12852 revision number and the table size.
12854 Fixed a reported problem in the table override support where the
12855 new table pointer was incorrectly treated as a physical address
12856 instead of a logical address.
12858 Eliminated the use of the AE_AML_ERROR exception and replaced it
12859 with more descriptive codes.
12861 Fixed a problem where an exception would occur if an ASL Field was
12862 defined with no named Field Units underneath it (used by some
12865 Code and Data Size: Current core subsystem library sizes are shown
12866 below. These are the code and data sizes for the acpica.lib
12867 produced by the Microsoft Visual C++ 6.0 compiler, and these
12868 values do not include any ACPI driver or OSPM code. The debug
12869 version of the code includes the debug output trace mechanism and
12870 has a larger code and data size. Note that these values will vary
12871 depending on the efficiency of the compiler and the compiler
12872 options used during generation.
12875 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12876 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12878 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12879 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12885 Much work done on ACPI init (MADT and PCI IRQ routing support).
12886 (Paul D. and Dominik Brodowski)
12888 Fix PCI IRQ-related panic on boot (Sam Revitch)
12890 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
12892 Fix "MHz" typo (Dominik Brodowski)
12894 Fix RTC year 2000 issue (Dominik Brodowski)
12896 Preclude multiple button proc entries (Eric Brunet)
12898 Moved arch-specific code out of include/platform/aclinux.h
12900 3) iASL Compiler Version X2044:
12902 Implemented error checking for the string used in the EISAID macro
12903 (Usually used in the definition of the _HID object.) The code now
12904 strictly enforces the PnP format - exactly 7 characters, 3
12905 uppercase letters and 4 hex digits.
12907 If a raw string is used in the definition of the _HID object
12908 (instead of the EISAID macro), the string must contain all
12909 alphanumeric characters (e.g., "*PNP0011" is not allowed because
12912 Implemented checking for invalid use of ACPI reserved names for
12913 most of the name creation operators (Name, Device, Event, Mutex,
12914 OperationRegion, PowerResource, Processor, and ThermalZone.)
12915 Previously, this check was only performed for control methods.
12917 Implemented an additional check on the Name operator to emit an
12918 error if a reserved name that must be implemented in ASL as a
12919 control method is used. We know that a reserved name must be a
12920 method if it is defined with input arguments.
12922 The warning emitted when a namespace object reference is not found
12923 during the cross reference phase has been changed into an error.
12924 The "External" directive should be used for names defined in other
12928 4) Tools and Utilities
12930 The 16-bit tools (adump16 and aexec16) have been regenerated and
12933 Fixed a problem with the output of both acpidump and adump16 where
12934 the indentation of closing parentheses and brackets was not
12936 aligned properly with the parent block.
12939 ----------------------------------------
12940 03 May 2002. Summary of changes for this release.
12943 1) ACPI CA Core Subsystem Version 20020503:
12945 Added support a new OSL interface that allows the host operating
12947 system software to override the DSDT found in the firmware -
12948 AcpiOsTableOverride. With this interface, the OSL can examine the
12949 version of the firmware DSDT and replace it with a different one
12952 Added new external interfaces for accessing ACPI registers from
12953 device drivers and other system software - AcpiGetRegister and
12954 AcpiSetRegister. This was simply an externalization of the
12955 existing AcpiHwBitRegister interfaces.
12957 Fixed a regression introduced in the previous build where the
12958 ASL/AML CreateField operator always returned an error,
12959 "destination must be a NS Node".
12961 Extended the maximum time (before failure) to successfully enable
12962 ACPI mode to 3 seconds.
12964 Code and Data Size: Current core subsystem library sizes are shown
12965 below. These are the code and data sizes for the acpica.lib
12966 produced by the Microsoft Visual C++ 6.0 compiler, and these
12967 values do not include any ACPI driver or OSPM code. The debug
12968 version of the code includes the debug output trace mechanism and
12969 has a larger code and data size. Note that these values will vary
12970 depending on the efficiency of the compiler and the compiler
12971 options used during generation.
12974 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12975 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12977 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12978 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12983 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
12984 free. While 3 out of 4 of our in-house systems work fine, the last
12985 one still hangs when testing the LAPIC timer.
12987 Renamed many files in 2.5 kernel release to omit "acpi_" from the
12990 Added warning on boot for Presario 711FR.
12992 Sleep improvements (Pavel Machek)
12994 ACPI can now be built without CONFIG_PCI enabled.
12996 IA64: Fixed memory map functions (JI Lee)
12999 3) iASL Compiler Version X2043:
13001 Added support to allow the compiler to be integrated into the MS
13002 VC++ development environment for one-button compilation of single
13003 files or entire projects -- with error-to-source-line mapping.
13005 Implemented support for compile-time constant folding for the
13006 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
13007 specification. This allows the ASL writer to use expressions
13008 instead of Integer/Buffer/String constants in terms that must
13009 evaluate to constants at compile time and will also simplify the
13010 emitted AML in any such sub-expressions that can be folded
13011 (evaluated at compile-time.) This increases the size of the
13012 compiler significantly because a portion of the ACPI CA AML
13013 interpreter is included within the compiler in order to pre-
13014 evaluate constant expressions.
13017 Fixed a problem with the "Unicode" ASL macro that caused the
13018 compiler to fault. (This macro is used in conjunction with the
13019 _STR reserved name.)
13021 Implemented an AML opcode optimization to use the Zero, One, and
13022 Ones opcodes where possible to further reduce the size of integer
13023 constants and thus reduce the overall size of the generated AML
13026 Implemented error checking for new reserved terms for ACPI version
13029 Implemented the -qr option to display the current list of ACPI
13030 reserved names known to the compiler.
13032 Implemented the -qc option to display the current list of ASL
13033 operators that are allowed within constant expressions and can
13034 therefore be folded at compile time if the operands are constants.
13039 Updated the Programmer's Reference for new interfaces, data types,
13040 and memory allocation model options.
13042 Updated the iASL Compiler User Reference to apply new format and
13043 add information about new features and options.
13045 ----------------------------------------
13046 19 April 2002. Summary of changes for this release.
13048 1) ACPI CA Core Subsystem Version 20020419:
13050 The source code base for the Core Subsystem has been completely
13051 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
13052 versions. The Lint option files used are included in the
13053 /acpi/generate/lint directory.
13055 Implemented enhanced status/error checking across the entire
13056 Hardware manager subsystem. Any hardware errors (reported from
13057 the OSL) are now bubbled up and will abort a running control
13061 Fixed a problem where the per-ACPI-table integer width (32 or 64)
13062 was stored only with control method nodes, causing a fault when
13063 non-control method code was executed during table loading. The
13064 solution implemented uses a global variable to indicate table
13065 width across the entire ACPI subsystem. Therefore, ACPI CA does
13066 not support mixed integer widths across different ACPI tables
13069 Fixed a problem where NULL extended fields (X fields) in an ACPI
13070 2.0 ACPI FADT caused the table load to fail. Although the
13071 existing ACPI specification is a bit fuzzy on this topic, the new
13072 behavior is to fall back on a ACPI 1.0 field if the corresponding
13073 ACPI 2.0 X field is zero (even though the table revision indicates
13074 a full ACPI 2.0 table.) The ACPI specification will be updated to
13075 clarify this issue.
13077 Fixed a problem with the SystemMemory operation region handler
13078 where memory was always accessed byte-wise even if the AML-
13079 specified access width was larger than a byte. This caused
13080 problems on systems with memory-mapped I/O. Memory is now
13081 accessed with the width specified. On systems that do not support
13082 non-aligned transfers, a check is made to guarantee proper address
13083 alignment before proceeding in order to avoid an AML-caused
13084 alignment fault within the kernel.
13087 Fixed a problem with the ExtendedIrq resource where only one byte
13088 of the 4-byte Irq field was extracted.
13090 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
13091 function was out of date and required a rewrite.
13093 Code and Data Size: Current core subsystem library sizes are shown
13094 below. These are the code and data sizes for the acpica.lib
13095 produced by the Microsoft Visual C++ 6.0 compiler, and these
13096 values do not include any ACPI driver or OSPM code. The debug
13097 version of the code includes the debug output trace mechanism and
13098 has a larger code and data size. Note that these values will vary
13099 depending on the efficiency of the compiler and the compiler
13100 options used during generation.
13103 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13104 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13106 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13107 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13112 PCI IRQ routing fixes (Dominik Brodowski)
13115 3) iASL Compiler Version X2042:
13117 Implemented an additional compile-time error check for a field
13118 unit whose size + minimum access width would cause a run-time
13119 access beyond the end-of-region. Previously, only the field size
13120 itself was checked.
13122 The Core subsystem and iASL compiler now share a common parse
13123 object in preparation for compile-time evaluation of the type
13124 3/4/5 ASL operators.
13127 ----------------------------------------
13128 Summary of changes for this release: 03_29_02
13130 1) ACPI CA Core Subsystem Version 20020329:
13132 Implemented support for late evaluation of TermArg operands to
13133 Buffer and Package objects. This allows complex expressions to be
13134 used in the declarations of these object types.
13136 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
13137 1.0, if the field was larger than 32 bits, it was returned as a
13138 buffer - otherwise it was returned as an integer. In ACPI 2.0,
13139 the field is returned as a buffer only if the field is larger than
13140 64 bits. The TableRevision is now considered when making this
13141 conversion to avoid incompatibility with existing ASL code.
13143 Implemented logical addressing for AcpiOsGetRootPointer. This
13144 allows an RSDP with either a logical or physical address. With
13145 this support, the host OS can now override all ACPI tables with
13146 one logical RSDP. Includes implementation of "typed" pointer
13147 support to allow a common data type for both physical and logical
13148 pointers internally. This required a change to the
13149 AcpiOsGetRootPointer interface.
13151 Implemented the use of ACPI 2.0 Generic Address Structures for all
13152 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
13153 mapped I/O for these ACPI features.
13155 Initialization now ignores not only non-required tables (All
13156 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
13157 not validate the table headers of unrecognized tables.
13159 Fixed a problem where a notify handler could only be
13160 installed/removed on an object of type Device. All "notify"
13162 objects are now supported -- Devices, Processor, Power, and
13165 Removed most verbosity from the ACPI_DB_INFO debug level. Only
13166 critical information is returned when this debug level is enabled.
13168 Code and Data Size: Current core subsystem library sizes are shown
13169 below. These are the code and data sizes for the acpica.lib
13170 produced by the Microsoft Visual C++ 6.0 compiler, and these
13171 values do not include any ACPI driver or OSPM code. The debug
13172 version of the code includes the debug output trace mechanism and
13173 has a larger code and data size. Note that these values will vary
13174 depending on the efficiency of the compiler and the compiler
13175 options used during generation.
13178 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13179 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13181 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13182 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13187 The processor driver (acpi_processor.c) now fully supports ACPI
13188 2.0-based processor performance control (e.g. Intel(R)
13189 SpeedStep(TM) technology) Note that older laptops that only have
13190 the Intel "applet" interface are not supported through this. The
13191 'limit' and 'performance' interface (/proc) are fully functional.
13192 [Note that basic policy for controlling performance state
13193 transitions will be included in the next version of ospmd.] The
13194 idle handler was modified to more aggressively use C2, and PIIX4
13195 errata handling underwent a complete overhaul (big thanks to
13196 Dominik Brodowski).
13198 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13199 based devices in the ACPI namespace are now dynamically bound
13200 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13201 This allows, among other things, ACPI to resolve bus numbers for
13202 subordinate PCI bridges.
13204 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13205 entries defined underneath PCI bridges.
13207 Added IBM 600E to bad bios list due to invalid _ADR value for
13208 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13210 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13211 (acpi.c, mpparse.c) -- stay tuned.
13213 Added back visual differentiation between fixed-feature and
13214 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13215 button/power/PWRF) to simplify button identification.
13217 We no longer use -Wno-unused when compiling debug. Please ignore
13218 any "_THIS_MODULE defined but not used" messages.
13220 Can now shut down the system using "magic sysrq" key.
13223 3) iASL Compiler version 2041:
13225 Fixed a problem where conversion errors for hex/octal/decimal
13226 constants were not reported.
13228 Implemented a fix for the General Register template Address field.
13229 This field was 8 bits when it should be 64.
13231 Fixed a problem where errors/warnings were no longer being emitted
13232 within the listing output file.
13234 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13235 exactly 4 characters, alphanumeric only.
13240 ----------------------------------------
13241 Summary of changes for this release: 03_08_02
13244 1) ACPI CA Core Subsystem Version 20020308:
13246 Fixed a problem with AML Fields where the use of the "AccessAny"
13247 keyword could cause an interpreter error due to attempting to read
13248 or write beyond the end of the parent Operation Region.
13250 Fixed a problem in the SystemMemory Operation Region handler where
13251 an attempt was made to map memory beyond the end of the region.
13252 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13253 errors on some Linux systems.
13255 Fixed a problem where the interpreter/namespace "search to root"
13256 algorithm was not functioning for some object types. Relaxed the
13257 internal restriction on the search to allow upsearches for all
13258 external object types as well as most internal types.
13263 We now use safe_halt() macro versus individual calls to sti | hlt.
13265 Writing to the processor limit interface should now work. "echo 1"
13266 will increase the limit, 2 will decrease, and 0 will reset to the
13273 Fixed segfault on Linux version.
13276 ----------------------------------------
13277 Summary of changes for this release: 02_25_02
13279 1) ACPI CA Core Subsystem:
13282 Fixed a problem where the GPE bit masks were not initialized
13283 properly, causing erratic GPE behavior.
13285 Implemented limited support for multiple calling conventions. The
13286 code can be generated with either the VPL (variable parameter
13287 list, or "C") convention, or the FPL (fixed parameter list, or
13288 "Pascal") convention. The core subsystem is about 3.4% smaller
13289 when generated with FPL.
13294 Re-add some /proc/acpi/event functionality that was lost during
13297 Resolved issue with /proc events for fixed-feature buttons showing
13298 up as the system device.
13300 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13302 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13304 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13306 Fixed limit interface & usage to fix bugs with passive cooling
13309 Restructured PRT support.
13312 ----------------------------------------
13313 Summary of changes for this label: 02_14_02
13316 1) ACPI CA Core Subsystem:
13318 Implemented support in AcpiLoadTable to allow loading of FACS and
13321 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13322 been removed. All 64-bit platforms should be migrated to the ACPI
13323 2.0 tables. The actbl71.h header has been removed from the source
13326 All C macros defined within the subsystem have been prefixed with
13327 "ACPI_" to avoid collision with other system include files.
13329 Removed the return value for the two AcpiOsPrint interfaces, since
13330 it is never used and causes lint warnings for ignoring the return
13333 Added error checking to all internal mutex acquire and release
13334 calls. Although a failure from one of these interfaces is
13335 probably a fatal system error, these checks will cause the
13336 immediate abort of the currently executing method or interface.
13338 Fixed a problem where the AcpiSetCurrentResources interface could
13339 fault. This was a side effect of the deployment of the new memory
13342 Fixed a couple of problems with the Global Lock support introduced
13343 in the last major build. The "common" (1.0/2.0) internal FACS was
13344 being overwritten with the FACS signature and clobbering the
13345 Global Lock pointer. Also, the actual firmware FACS was being
13346 unmapped after construction of the "common" FACS, preventing
13347 access to the actual Global Lock field within it. The "common"
13348 internal FACS is no longer installed as an actual ACPI table; it
13349 is used simply as a global.
13351 Code and Data Size: Current core subsystem library sizes are shown
13352 below. These are the code and data sizes for the acpica.lib
13353 produced by the Microsoft Visual C++ 6.0 compiler, and these
13354 values do not include any ACPI driver or OSPM code. The debug
13355 version of the code includes the debug output trace mechanism and
13356 has a larger code and data size. Note that these values will vary
13357 depending on the efficiency of the compiler and the compiler
13358 options used during generation.
13360 Previous Release (02_07_01)
13361 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13362 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13364 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13365 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13370 Updated Linux-specific code for core macro and OSL interface
13371 changes described above.
13373 Improved /proc/acpi/event. It now can be opened only once and has
13374 proper poll functionality.
13376 Fixed and restructured power management (acpi_bus).
13378 Only create /proc "view by type" when devices of that class exist.
13380 Fixed "charging/discharging" bug (and others) in acpi_battery.
13382 Improved thermal zone code.
13385 3) ASL Compiler, version X2039:
13388 Implemented the new compiler restriction on ASL String hex/octal
13389 escapes to non-null, ASCII values. An error results if an invalid
13390 value is used. (This will require an ACPI 2.0 specification
13393 AML object labels that are output to the optional C and ASM source
13394 are now prefixed with both the ACPI table signature and table ID
13395 to help guarantee uniqueness within a large BIOS project.
13398 ----------------------------------------
13399 Summary of changes for this label: 02_01_02
13401 1) ACPI CA Core Subsystem:
13403 ACPI 2.0 support is complete in the entire Core Subsystem and the
13404 ASL compiler. All new ACPI 2.0 operators are implemented and all
13405 other changes for ACPI 2.0 support are complete. With
13406 simultaneous code and data optimizations throughout the subsystem,
13407 ACPI 2.0 support has been implemented with almost no additional
13408 cost in terms of code and data size.
13410 Implemented a new mechanism for allocation of return buffers. If
13411 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13412 be allocated on behalf of the caller. Consolidated all return
13413 buffer validation and allocation to a common procedure. Return
13414 buffers will be allocated via the primary OSL allocation interface
13415 since it appears that a separate pool is not needed by most users.
13416 If a separate pool is required for these buffers, the caller can
13417 still use the original mechanism and pre-allocate the buffer(s).
13419 Implemented support for string operands within the DerefOf
13422 Restructured the Hardware and Event managers to be table driven,
13423 simplifying the source code and reducing the amount of generated
13426 Split the common read/write low-level ACPI register bitfield
13427 procedure into a separate read and write, simplifying the code
13430 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13431 used only a handful of times and didn't have enough critical mass
13432 for a separate interface. Replaced with a common calloc procedure
13435 Fixed a reported problem with the GPE number mapping mechanism
13436 that allows GPE1 numbers to be non-contiguous with GPE0.
13437 Reorganized the GPE information and shrunk a large array that was
13438 originally large enough to hold info for all possible GPEs (256)
13439 to simply large enough to hold all GPEs up to the largest GPE
13440 number on the machine.
13442 Fixed a reported problem with resource structure alignment on 64-
13445 Changed the AcpiEnableEvent and AcpiDisableEvent external
13446 interfaces to not require any flags for the common case of
13447 enabling/disabling a GPE.
13449 Implemented support to allow a "Notify" on a Processor object.
13451 Most TBDs in comments within the source code have been resolved
13455 Fixed a problem in the interpreter where a standalone parent
13456 prefix (^) was not handled correctly in the interpreter and
13459 Removed obsolete and unnecessary GPE save/restore code.
13461 Implemented Field support in the ASL Load operator. This allows a
13462 table to be loaded from a named field, in addition to loading a
13463 table directly from an Operation Region.
13465 Implemented timeout and handle support in the external Global Lock
13468 Fixed a problem in the AcpiDump utility where pathnames were no
13469 longer being generated correctly during the dump of named objects.
13471 Modified the AML debugger to give a full display of if/while
13472 predicates instead of just one AML opcode at a time. (The
13473 predicate can have several nested ASL statements.) The old method
13474 was confusing during single stepping.
13476 Code and Data Size: Current core subsystem library sizes are shown
13477 below. These are the code and data sizes for the acpica.lib
13478 produced by the Microsoft Visual C++ 6.0 compiler, and these
13479 values do not include any ACPI driver or OSPM code. The debug
13480 version of the code includes the debug output trace mechanism and
13481 has a larger code and data size. Note that these values will vary
13482 depending on the efficiency of the compiler and the compiler
13483 options used during generation.
13485 Previous Release (12_18_01)
13486 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13487 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13489 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13490 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13494 Implemented fix for PIIX reverse throttling errata (Processor
13497 Added new Limit interface (Processor and Thermal drivers)
13499 New thermal policy (Thermal driver)
13501 Many updates to /proc
13503 Battery "low" event support (Battery driver)
13505 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13507 IA32 - IA64 initialization unification, no longer experimental
13509 Menuconfig options redesigned
13511 3) ASL Compiler, version X2037:
13513 Implemented several new output features to simplify integration of
13514 AML code into firmware: 1) Output the AML in C source code with
13515 labels for each named ASL object. The original ASL source code
13516 is interleaved as C comments. 2) Output the AML in ASM source code
13517 with labels and interleaved ASL source. 3) Output the AML in
13518 raw hex table form, in either C or ASM.
13520 Implemented support for optional string parameters to the
13521 LoadTable operator.
13523 Completed support for embedded escape sequences within string
13524 literals. The compiler now supports all single character escapes
13525 as well as the Octal and Hex escapes. Note: the insertion of a
13526 null byte into a string literal (via the hex/octal escape) causes
13527 the string to be immediately terminated. A warning is issued.
13529 Fixed a problem where incorrect AML was generated for the case
13530 where an ASL namepath consists of a single parent prefix (
13532 ) with no trailing name segments.
13534 The compiler has been successfully generated with a 64-bit C
13540 ----------------------------------------
13541 Summary of changes for this label: 12_18_01
13545 Enhanced blacklist with reason and severity fields. Any table's
13546 signature may now be used to identify a blacklisted system.
13548 Call _PIC control method to inform the firmware which interrupt
13549 model the OS is using. Turn on any disabled link devices.
13551 Cleaned up busmgr /proc error handling (Andreas Dilger)
13553 2) ACPI CA Core Subsystem:
13555 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13558 Completed implementation of the ACPI 2.0 "Continue",
13559 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13560 operators. All new ACPI 2.0 operators are now implemented in both
13561 the ASL compiler and the AML interpreter. The only remaining ACPI
13562 2.0 task is support for the String data type in the DerefOf
13563 operator. Fixed a problem with AcquireMutex where the status code
13564 was lost if the caller had to actually wait for the mutex.
13566 Increased the maximum ASL Field size from 64K bits to 4G bits.
13568 Completed implementation of the external Global Lock interfaces --
13569 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13570 Handler parameters were added.
13572 Completed another pass at removing warnings and issues when
13573 compiling with 64-bit compilers. The code now compiles cleanly
13574 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13575 add and subtract (diff) macros have changed considerably.
13578 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13579 64-bit platforms, 32-bits on all others. This type is used
13580 wherever memory allocation and/or the C sizeof() operator is used,
13581 and affects the OSL memory allocation interfaces AcpiOsAllocate
13582 and AcpiOsCallocate.
13584 Implemented sticky user breakpoints in the AML debugger.
13586 Code and Data Size: Current core subsystem library sizes are shown
13587 below. These are the code and data sizes for the acpica.lib
13588 produced by the Microsoft Visual C++ 6.0 compiler, and these
13589 values do not include any ACPI driver or OSPM code. The debug
13590 version of the code includes the debug output trace mechanism and
13591 has a larger code and data size. Note that these values will vary
13592 depending on the efficiency of the compiler and the compiler
13593 options used during generation.
13595 Previous Release (12_05_01)
13596 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13597 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13599 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13600 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13602 3) ASL Compiler, version X2034:
13604 Now checks for (and generates an error if detected) the use of a
13605 Break or Continue statement without an enclosing While statement.
13608 Successfully generated the compiler with the Intel 64-bit C
13611 ----------------------------------------
13612 Summary of changes for this label: 12_05_01
13614 1) ACPI CA Core Subsystem:
13616 The ACPI 2.0 CopyObject operator is fully implemented. This
13617 operator creates a new copy of an object (and is also used to
13618 bypass the "implicit conversion" mechanism of the Store operator.)
13620 The ACPI 2.0 semantics for the SizeOf operator are fully
13621 implemented. The change is that performing a SizeOf on a
13622 reference object causes an automatic dereference of the object to
13623 tha actual value before the size is evaluated. This behavior was
13624 undefined in ACPI 1.0.
13626 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13627 have been implemented. The interrupt polarity and mode are now
13630 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13631 appearing in Package objects were not properly converted to
13632 integers when the internal Package was converted to an external
13633 object (via the AcpiEvaluateObject interface.)
13635 Fixed a problem with the namespace object deletion mechanism for
13636 objects created by control methods. There were two parts to this
13637 problem: 1) Objects created during the initialization phase method
13638 parse were not being deleted, and 2) The object owner ID mechanism
13639 to track objects was broken.
13641 Fixed a problem where the use of the ASL Scope operator within a
13642 control method would result in an invalid opcode exception.
13644 Fixed a problem introduced in the previous label where the buffer
13645 length required for the _PRT structure was not being returned
13648 Code and Data Size: Current core subsystem library sizes are shown
13649 below. These are the code and data sizes for the acpica.lib
13650 produced by the Microsoft Visual C++ 6.0 compiler, and these
13651 values do not include any ACPI driver or OSPM code. The debug
13652 version of the code includes the debug output trace mechanism and
13653 has a larger code and data size. Note that these values will vary
13654 depending on the efficiency of the compiler and the compiler
13655 options used during generation.
13657 Previous Release (11_20_01)
13658 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13659 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13662 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13663 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13667 Updated all files to apply cleanly against 2.4.16.
13669 Added basic PCI Interrupt Routing Table (PRT) support for IA32
13670 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
13671 version supports both static and dyanmic PRT entries, but dynamic
13672 entries are treated as if they were static (not yet
13673 reconfigurable). Architecture- specific code to use this data is
13674 absent on IA32 but should be available shortly.
13676 Changed the initialization sequence to start the ACPI interpreter
13677 (acpi_init) prior to initialization of the PCI driver (pci_init)
13678 in init/main.c. This ordering is required to support PRT and
13679 facilitate other (future) enhancement. A side effect is that the
13680 ACPI bus driver and certain device drivers can no longer be loaded
13683 Modified the 'make menuconfig' options to allow PCI Interrupt
13684 Routing support to be included without the ACPI Bus and other
13687 3) ASL Compiler, version X2033:
13689 Fixed some issues with the use of the new CopyObject and
13690 DataTableRegion operators. Both are fully functional.
13692 ----------------------------------------
13693 Summary of changes for this label: 11_20_01
13695 20 November 2001. Summary of changes for this release.
13697 1) ACPI CA Core Subsystem:
13699 Updated Index support to match ACPI 2.0 semantics. Storing a
13700 Integer, String, or Buffer to an Index of a Buffer will store only
13701 the least-significant byte of the source to the Indexed buffer
13702 byte. Multiple writes are not performed.
13704 Fixed a problem where the access type used in an AccessAs ASL
13705 operator was not recorded correctly into the field object.
13707 Fixed a problem where ASL Event objects were created in a
13708 signalled state. Events are now created in an unsignalled state.
13710 The internal object cache is now purged after table loading and
13711 initialization to reduce the use of dynamic kernel memory -- on
13712 the assumption that object use is greatest during the parse phase
13713 of the entire table (versus the run-time use of individual control
13716 ACPI 2.0 variable-length packages are now fully operational.
13718 Code and Data Size: Code and Data optimizations have permitted new
13719 feature development with an actual reduction in the library size.
13720 Current core subsystem library sizes are shown below. These are
13721 the code and data sizes for the acpica.lib produced by the
13722 Microsoft Visual C++ 6.0 compiler, and these values do not include
13723 any ACPI driver or OSPM code. The debug version of the code
13724 includes the debug output trace mechanism and has a larger code
13725 and data size. Note that these values will vary depending on the
13726 efficiency of the compiler and the compiler options used during
13729 Previous Release (11_09_01):
13730 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13731 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13734 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13735 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13739 Enhanced the ACPI boot-time initialization code to allow the use
13740 of Local APIC tables for processor enumeration on IA-32, and to
13741 pave the way for a fully MPS-free boot (on SMP systems) in the
13742 near future. This functionality replaces
13743 arch/i386/kernel/acpitables.c, which was introduced in an earlier
13744 2.4.15-preX release. To enable this feature you must add
13745 "acpi_boot=on" to the kernel command line -- see the help entry
13746 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
13749 Restructured the configuration options to allow boot-time table
13750 parsing support without inclusion of the ACPI Interpreter (and
13753 NOTE: This release does not include fixes for the reported events,
13754 power-down, and thermal passive cooling issues (coming soon).
13758 Added additional typechecking for Fields within restricted access
13759 Operation Regions. All fields within EC and CMOS regions must be
13760 declared with ByteAcc. All fields withing SMBus regions must be
13761 declared with the BufferAcc access type.
13763 Fixed a problem where the listing file output of control methods
13764 no longer interleaved the actual AML code with the ASL source
13770 ----------------------------------------
13771 Summary of changes for this label: 11_09_01
13773 1) ACPI CA Core Subsystem:
13775 Implemented ACPI 2.0-defined support for writes to fields with a
13776 Buffer, String, or Integer source operand that is smaller than the
13777 target field. In these cases, the source operand is zero-extended
13778 to fill the target field.
13780 Fixed a problem where a Field starting bit offset (within the
13781 parent operation region) was calculated incorrectly if the
13783 alignment of the field differed from the access width. This
13784 affected CreateWordField, CreateDwordField, CreateQwordField, and
13785 possibly other fields that use the "AccessAny" keyword.
13787 Fixed a problem introduced in the 11_02_01 release where indirect
13788 stores through method arguments did not operate correctly.
13792 Implemented boot-time ACPI table parsing support
13793 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
13794 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
13795 legacy BIOS interfaces (e.g. MPS) for the configuration of system
13796 processors, memory, and interrupts during setup_arch(). Note that
13797 this patch does not include the required architecture-specific
13798 changes required to apply this information -- subsequent patches
13799 will be posted for both IA32 and IA64 to achieve this.
13801 Added low-level sleep support for IA32 platforms, courtesy of Pat
13802 Mochel. This allows IA32 systems to transition to/from various
13803 sleeping states (e.g. S1, S3), although the lack of a centralized
13804 driver model and power-manageable drivers will prevent its
13805 (successful) use on most systems.
13807 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
13808 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
13809 tables" option, etc.
13811 Increased the default timeout for the EC driver from 1ms to 10ms
13812 (1000 cycles of 10us) to try to address AE_TIME errors during EC
13815 ----------------------------------------
13816 Summary of changes for this label: 11_02_01
13818 1) ACPI CA Core Subsystem:
13820 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
13821 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
13824 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
13825 changes to support ACPI 2.0 Qword field access. Read/Write
13826 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
13827 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
13828 the value parameter for the address space handler interface is now
13829 an ACPI_INTEGER. OSL implementations of these interfaces must now
13830 handle the case where the Width parameter is 64.
13832 Index Fields: Fixed a problem where unaligned bit assembly and
13833 disassembly for IndexFields was not supported correctly.
13835 Index and Bank Fields: Nested Index and Bank Fields are now
13836 supported. During field access, a check is performed to ensure
13837 that the value written to an Index or Bank register is not out of
13838 the range of the register. The Index (or Bank) register is
13839 written before each access to the field data. Future support will
13840 include allowing individual IndexFields to be wider than the
13841 DataRegister width.
13843 Fields: Fixed a problem where the AML interpreter was incorrectly
13844 attempting to write beyond the end of a Field/OpRegion. This was
13845 a boundary case that occurred when a DWORD field was written to a
13846 BYTE access OpRegion, forcing multiple writes and causing the
13847 interpreter to write one datum too many.
13849 Fields: Fixed a problem with Field/OpRegion access where the
13850 starting bit address of a field was incorrectly calculated if the
13851 current access type was wider than a byte (WordAcc, DwordAcc, or
13854 Fields: Fixed a problem where forward references to individual
13855 FieldUnits (individual Field names within a Field definition) were
13856 not resolved during the AML table load.
13858 Fields: Fixed a problem where forward references from a Field
13859 definition to the parent Operation Region definition were not
13860 resolved during the AML table load.
13862 Fields: Duplicate FieldUnit names within a scope are now detected
13863 during AML table load.
13865 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
13866 returned an incorrect name for the root node.
13868 Code and Data Size: Code and Data optimizations have permitted new
13869 feature development with an actual reduction in the library size.
13870 Current core subsystem library sizes are shown below. These are
13871 the code and data sizes for the acpica.lib produced by the
13872 Microsoft Visual C++ 6.0 compiler, and these values do not include
13873 any ACPI driver or OSPM code. The debug version of the code
13874 includes the debug output trace mechanism and has a larger code
13875 and data size. Note that these values will vary depending on the
13876 efficiency of the compiler and the compiler options used during
13879 Previous Release (10_18_01):
13880 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13881 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13884 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13885 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13889 Improved /proc processor output (Pavel Machek) Re-added
13890 MODULE_LICENSE("GPL") to all modules.
13892 3) ASL Compiler version X2030:
13894 Duplicate FieldUnit names within a scope are now detected and
13899 Programmer Reference updated to reflect OSL and address space
13900 handler interface changes described above.
13902 ----------------------------------------
13903 Summary of changes for this label: 10_18_01
13905 ACPI CA Core Subsystem:
13907 Fixed a problem with the internal object reference count mechanism
13908 that occasionally caused premature object deletion. This resolves
13909 all of the outstanding problem reports where an object is deleted
13910 in the middle of an interpreter evaluation. Although this problem
13911 only showed up in rather obscure cases, the solution to the
13912 problem involved an adjustment of all reference counts involving
13913 objects attached to namespace nodes.
13915 Fixed a problem with Field support in the interpreter where
13916 writing to an aligned field whose length is an exact multiple (2
13917 or greater) of the field access granularity would cause an attempt
13918 to write beyond the end of the field.
13920 The top level AML opcode execution functions within the
13921 interpreter have been renamed with a more meaningful and
13922 consistent naming convention. The modules exmonad.c and
13923 exdyadic.c were eliminated. New modules are exoparg1.c,
13924 exoparg2.c, exoparg3.c, and exoparg6.c.
13926 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
13928 Fixed a problem where the AML debugger was causing some internal
13929 objects to not be deleted during subsystem termination.
13931 Fixed a problem with the external AcpiEvaluateObject interface
13932 where the subsystem would fault if the named object to be
13933 evaluated refered to a constant such as Zero, Ones, etc.
13935 Fixed a problem with IndexFields and BankFields where the
13936 subsystem would fault if the index, data, or bank registers were
13937 not defined in the same scope as the field itself.
13939 Added printf format string checking for compilers that support
13940 this feature. Corrected more than 50 instances of issues with
13941 format specifiers within invocations of ACPI_DEBUG_PRINT
13942 throughout the core subsystem code.
13944 The ASL "Revision" operator now returns the ACPI support level
13945 implemented in the core - the value "2" since the ACPI 2.0 support
13946 is more than 50% implemented.
13948 Enhanced the output of the AML debugger "dump namespace" command
13949 to output in a more human-readable form.
13951 Current core subsystem library code sizes are shown below. These
13953 are the code and data sizes for the acpica.lib produced by the
13954 Microsoft Visual C++ 6.0 compiler, and these values do not include
13955 any ACPI driver or OSPM code. The debug version of the code
13956 includes the full debug trace mechanism -- leading to a much
13958 larger code and data size. Note that these values will vary
13959 depending on the efficiency of the compiler and the compiler
13960 options used during generation.
13962 Previous Label (09_20_01):
13963 Non-Debug Version: 65K Code, 5K Data, 70K Total
13964 Debug Version: 138K Code, 58K Data, 196K Total
13968 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13969 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13973 Implemented a "Bad BIOS Blacklist" to track machines that have
13974 known ASL/AML problems.
13976 Enhanced the /proc interface for the thermal zone driver and added
13977 support for _HOT (the critical suspend trip point). The 'info'
13978 file now includes threshold/policy information, and allows setting
13979 of _SCP (cooling preference) and _TZP (polling frequency) values
13980 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
13981 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
13982 preference to the passive/quiet mode (if supported by the ASL).
13984 Implemented a workaround for a gcc bug that resuted in an OOPs
13985 when loading the control method battery driver.
13987 ----------------------------------------
13988 Summary of changes for this label: 09_20_01
13990 ACPI CA Core Subsystem:
13992 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
13993 modified to allow individual GPE levels to be flagged as wake-
13994 enabled (i.e., these GPEs are to remain enabled when the platform
13997 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
13998 support wake-enabled GPEs. This means that upon entering the
13999 sleep state, all GPEs that are not wake-enabled are disabled.
14000 When leaving the sleep state, these GPEs are reenabled.
14002 A local double-precision divide/modulo module has been added to
14003 enhance portability to OS kernels where a 64-bit math library is
14004 not available. The new module is "utmath.c".
14006 Several optimizations have been made to reduce the use of CPU
14007 stack. Originally over 2K, the maximum stack usage is now below
14008 2K at 1860 bytes (1.82k)
14010 Fixed a problem with the AcpiGetFirmwareTable interface where the
14011 root table pointer was not mapped into a logical address properly.
14013 Fixed a problem where a NULL pointer was being dereferenced in the
14014 interpreter code for the ASL Notify operator.
14016 Fixed a problem where the use of the ASL Revision operator
14017 returned an error. This operator now returns the current version
14018 of the ACPI CA core subsystem.
14020 Fixed a problem where objects passed as control method parameters
14021 to AcpiEvaluateObject were always deleted at method termination.
14022 However, these objects may end up being stored into the namespace
14023 by the called method. The object reference count mechanism was
14024 applied to these objects instead of a force delete.
14026 Fixed a problem where static strings or buffers (contained in the
14027 AML code) that are declared as package elements within the ASL
14028 code could cause a fault because the interpreter would attempt to
14029 delete them. These objects are now marked with the "static
14030 object" flag to prevent any attempt to delete them.
14032 Implemented an interpreter optimization to use operands directly
14033 from the state object instead of extracting the operands to local
14034 variables. This reduces stack use and code size, and improves
14037 The module exxface.c was eliminated as it was an unnecessary extra
14040 Current core subsystem library code sizes are shown below. These
14041 are the code and data sizes for the acpica.lib produced by the
14042 Microsoft Visual C++ 6.0 compiler, and these values do not include
14043 any ACPI driver or OSPM code. The debug version of the code
14044 includes the full debug trace mechanism -- leading to a much
14045 larger code and data size. Note that these values will vary
14046 depending on the efficiency of the compiler and the compiler
14047 options used during generation.
14049 Non-Debug Version: 65K Code, 5K Data, 70K Total
14050 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
14051 Total (Previously 195K)
14055 Support for ACPI 2.0 64-bit integers has been added. All ACPI
14056 Integer objects are now 64 bits wide
14058 All Acpi data types and structures are now in lower case. Only
14059 Acpi macros are upper case for differentiation.
14063 Changes to the external interfaces as described above.
14065 ----------------------------------------
14066 Summary of changes for this label: 08_31_01
14068 ACPI CA Core Subsystem:
14070 A bug with interpreter implementation of the ASL Divide operator
14071 was found and fixed. The implicit function return value (not the
14072 explicit store operands) was returning the remainder instead of
14073 the quotient. This was a longstanding bug and it fixes several
14074 known outstanding issues on various platforms.
14076 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
14077 been further optimized for size. There are 700 invocations of the
14078 DEBUG_PRINT macro alone, so each optimization reduces the size of
14079 the debug version of the subsystem significantly.
14081 A stack trace mechanism has been implemented. The maximum stack
14082 usage is about 2K on 32-bit platforms. The debugger command "stat
14083 stack" will display the current maximum stack usage.
14085 All public symbols and global variables within the subsystem are
14086 now prefixed with the string "Acpi". This keeps all of the
14087 symbols grouped together in a kernel map, and avoids conflicts
14088 with other kernel subsystems.
14090 Most of the internal fixed lookup tables have been moved into the
14091 code segment via the const operator.
14093 Several enhancements have been made to the interpreter to both
14094 reduce the code size and improve performance.
14096 Current core subsystem library code sizes are shown below. These
14097 are the code and data sizes for the acpica.lib produced by the
14098 Microsoft Visual C++ 6.0 compiler, and these values do not include
14099 any ACPI driver or OSPM code. The debug version of the code
14100 includes the full debug trace mechanism which contains over 700
14101 invocations of the DEBUG_PRINT macro, 500 function entry macro
14102 invocations, and over 900 function exit macro invocations --
14103 leading to a much larger code and data size. Note that these
14104 values will vary depending on the efficiency of the compiler and
14105 the compiler options used during generation.
14107 Non-Debug Version: 64K Code, 5K Data, 69K Total
14108 Debug Version: 137K Code, 58K Data, 195K Total
14112 Implemented wbinvd() macro, pending a kernel-wide definition.
14114 Fixed /proc/acpi/event to handle poll() and short reads.
14116 ASL Compiler, version X2026:
14118 Fixed a problem introduced in the previous label where the AML
14120 code emitted for package objects produced packages with zero
14123 ----------------------------------------
14124 Summary of changes for this label: 08_16_01
14126 ACPI CA Core Subsystem:
14128 The following ACPI 2.0 ASL operators have been implemented in the
14129 AML interpreter (These are already supported by the Intel ASL
14130 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
14131 ToBuffer. Support for 64-bit AML constants is implemented in the
14132 AML parser, debugger, and disassembler.
14134 The internal memory tracking mechanism (leak detection code) has
14135 been upgraded to reduce the memory overhead (a separate tracking
14136 block is no longer allocated for each memory allocation), and now
14137 supports all of the internal object caches.
14139 The data structures and code for the internal object caches have
14140 been coelesced and optimized so that there is a single cache and
14141 memory list data structure and a single group of functions that
14142 implement generic cache management. This has reduced the code
14143 size in both the debug and release versions of the subsystem.
14145 The DEBUG_PRINT macro(s) have been optimized for size and replaced
14146 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
14147 different, because it generates a single call to an internal
14148 function. This results in a savings of about 90 bytes per
14149 invocation, resulting in an overall code and data savings of about
14150 16% in the debug version of the subsystem.
14154 Fixed C3 disk corruption problems and re-enabled C3 on supporting
14157 Integrated low-level sleep code by Patrick Mochel.
14159 Further tweaked source code Linuxization.
14165 Support for ACPI 2.0 variable length packages is fixed/completed.
14167 Fixed a problem where the optional length parameter for the ACPI
14168 2.0 ToString operator.
14170 Fixed multiple extraneous error messages when a syntax error is
14171 detected within the declaration line of a control method.
14173 ----------------------------------------
14174 Summary of changes for this label: 07_17_01
14176 ACPI CA Core Subsystem:
14178 Added a new interface named AcpiGetFirmwareTable to obtain any
14179 ACPI table via the ACPI signature. The interface can be called at
14180 any time during kernel initialization, even before the kernel
14181 virtual memory manager is initialized and paging is enabled. This
14182 allows kernel subsystems to obtain ACPI tables very early, even
14183 before the ACPI CA subsystem is initialized.
14185 Fixed a problem where Fields defined with the AnyAcc attribute
14186 could be resolved to the incorrect address under the following
14187 conditions: 1) the field width is larger than 8 bits and 2) the
14188 parent operation region is not defined on a DWORD boundary.
14190 Fixed a problem where the interpreter is not being locked during
14191 namespace initialization (during execution of the _INI control
14192 methods), causing an error when an attempt is made to release it
14195 ACPI 2.0 support in the AML Interpreter has begun and will be
14196 ongoing throughout the rest of this year. In this label, The Mod
14197 operator is implemented.
14199 Added a new data type to contain full PCI addresses named
14200 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14201 and Function values.
14205 Enhanced the Linux version of the source code to change most
14206 capitalized ACPI type names to lowercase. For example, all
14207 instances of ACPI_STATUS are changed to acpi_status. This will
14208 result in a large diff, but the change is strictly cosmetic and
14209 aligns the CA code closer to the Linux coding standard.
14213 The interfaces to the PCI configuration space have been changed to
14214 add the PCI Segment number and to split the single 32-bit combined
14215 DeviceFunction field into two 16-bit fields. This was
14216 accomplished by moving the four values that define an address in
14217 PCI configuration space (segment, bus, device, and function) to
14218 the new ACPI_PCI_ID structure.
14220 The changes to the PCI configuration space interfaces led to a
14221 reexamination of the complete set of address space access
14222 interfaces for PCI, I/O, and Memory. The previously existing 18
14223 interfaces have proven difficult to maintain (any small change
14224 must be propagated across at least 6 interfaces) and do not easily
14225 allow for future expansion to 64 bits if necessary. Also, on some
14226 systems, it would not be appropriate to demultiplex the access
14227 width (8, 16, 32,or 64) before calling the OSL if the
14228 corresponding native OS interfaces contain a similar access width
14229 parameter. For these reasons, the 18 address space interfaces
14230 have been replaced by these 6 new ones:
14232 AcpiOsReadPciConfiguration
14233 AcpiOsWritePciConfiguration
14239 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14240 to perform the platform and/or OS-specific actions necessary to
14241 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14242 interface will simply call down to the CA core to perform the low-
14243 memory search for the table. On IA-64, the RSDP is obtained from
14244 EFI. Migrating this interface to the OSL allows the CA core to
14246 remain OS and platform independent.
14248 Added a new interface named AcpiOsSignal to provide a generic
14249 "function code and pointer" interface for various miscellaneous
14250 signals and notifications that must be made to the host OS. The
14251 first such signals are intended to support the ASL Fatal and
14252 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14253 interface has been obsoleted.
14255 The definition of the AcpiFormatException interface has been
14256 changed to simplify its use. The caller no longer must supply a
14257 buffer to the call; A pointer to a const string is now returned
14258 directly. This allows the call to be easily used in printf
14259 statements, etc. since the caller does not have to manage a local
14263 ASL Compiler, Version X2025:
14265 The ACPI 2.0 Switch/Case/Default operators have been implemented
14266 and are fully functional. They will work with all ACPI 1.0
14267 interpreters, since the operators are simply translated to If/Else
14270 The ACPI 2.0 ElseIf operator is implemented and will also work
14271 with 1.0 interpreters, for the same reason.
14273 Implemented support for ACPI 2.0 variable-length packages. These
14274 packages have a separate opcode, and their size is determined by
14275 the interpreter at run-time.
14277 Documentation The ACPI CA Programmer Reference has been updated to
14278 reflect the new interfaces and changes to existing interfaces.
14280 ------------------------------------------
14281 Summary of changes for this label: 06_15_01
14283 ACPI CA Core Subsystem:
14285 Fixed a problem where a DWORD-accessed field within a Buffer
14286 object would get its byte address inadvertently rounded down to
14287 the nearest DWORD. Buffers are always Byte-accessible.
14289 ASL Compiler, version X2024:
14291 Fixed a problem where the Switch() operator would either fault or
14292 hang the compiler. Note however, that the AML code for this ACPI
14293 2.0 operator is not yet implemented.
14295 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14298 Implementation of the CreateField operator automatically converts
14299 a reference to a named field within a resource descriptor from a
14300 byte offset to a bit offset if required.
14302 Added some missing named fields from the resource descriptor
14303 support. These are the names that are automatically created by the
14304 compiler to reference fields within a descriptor. They are only
14305 valid at compile time and are not passed through to the AML
14308 Resource descriptor named fields are now typed as Integers and
14309 subject to compile-time typechecking when used in expressions.
14311 ------------------------------------------
14312 Summary of changes for this label: 05_18_01
14314 ACPI CA Core Subsystem:
14316 Fixed a couple of problems in the Field support code where bits
14317 from adjacent fields could be returned along with the proper field
14318 bits. Restructured the field support code to improve performance,
14319 readability and maintainability.
14321 New DEBUG_PRINTP macro automatically inserts the procedure name
14322 into the output, saving hundreds of copies of procedure name
14323 strings within the source, shrinking the memory footprint of the
14324 debug version of the core subsystem.
14326 Source Code Structure:
14328 The source code directory tree was restructured to reflect the
14329 current organization of the component architecture. Some files
14330 and directories have been moved and/or renamed.
14334 Fixed leaking kacpidpc processes.
14336 Fixed queueing event data even when /proc/acpi/event is not
14339 ASL Compiler, version X2020:
14341 Memory allocation performance enhancement - over 24X compile time
14342 improvement on large ASL files. Parse nodes and namestring
14343 buffers are now allocated from a large internal compiler buffer.
14345 The temporary .SRC file is deleted unless the "-s" option is
14348 The "-d" debug output option now sends all output to the .DBG file
14349 instead of the console.
14351 "External" second parameter is now optional
14353 "ElseIf" syntax now properly allows the predicate
14355 Last operand to "Load" now recognized as a Target operand
14357 Debug object can now be used anywhere as a normal object.
14359 ResourceTemplate now returns an object of type BUFFER
14361 EISAID now returns an object of type INTEGER
14363 "Index" now works with a STRING operand
14365 "LoadTable" now accepts optional parameters
14367 "ToString" length parameter is now optional
14369 "Interrupt (ResourceType," parse error fixed.
14371 "Register" with a user-defined region space parse error fixed
14373 Escaped backslash at the end of a string ("\\") scan/parse error
14376 "Revision" is now an object of type INTEGER.
14380 ------------------------------------------
14381 Summary of changes for this label: 05_02_01
14385 /proc/acpi/event now blocks properly.
14387 Removed /proc/sys/acpi. You can still dump your DSDT from
14390 ACPI CA Core Subsystem:
14392 Fixed a problem introduced in the previous label where some of the
14393 "small" resource descriptor types were not recognized.
14395 Improved error messages for the case where an ASL Field is outside
14396 the range of the parent operation region.
14398 ASL Compiler, version X2018:
14401 Added error detection for ASL Fields that extend beyond the length
14402 of the parent operation region (only if the length of the region
14403 is known at compile time.) This includes fields that have a
14404 minimum access width that is smaller than the parent region, and
14405 individual field units that are partially or entirely beyond the
14406 extent of the parent.
14410 ------------------------------------------
14411 Summary of changes for this label: 04_27_01
14413 ACPI CA Core Subsystem:
14415 Fixed a problem where the namespace mutex could be released at the
14416 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14418 Added optional thread ID output for debug traces, to simplify
14419 debugging of multiple threads. Added context switch notification
14420 when the debug code realizes that a different thread is now
14421 executing ACPI code.
14423 Some additional external data types have been prefixed with the
14424 string "ACPI_" for consistency. This may effect existing code.
14425 The data types affected are the external callback typedefs - e.g.,
14427 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14431 Fixed an issue with the OSL semaphore implementation where a
14432 thread was waking up with an error from receiving a SIGCHLD
14435 Linux version of ACPI CA now uses the system C library for string
14436 manipulation routines instead of a local implementation.
14438 Cleaned up comments and removed TBDs.
14440 ASL Compiler, version X2017:
14442 Enhanced error detection and reporting for all file I/O
14447 Programmer Reference updated to version 1.06.
14451 ------------------------------------------
14452 Summary of changes for this label: 04_13_01
14454 ACPI CA Core Subsystem:
14456 Restructured support for BufferFields and RegionFields.
14457 BankFields support is now fully operational. All known 32-bit
14458 limitations on field sizes have been removed. Both BufferFields
14459 and (Operation) RegionFields are now supported by the same field
14462 Resource support now supports QWORD address and IO resources. The
14463 16/32/64 bit address structures and the Extended IRQ structure
14464 have been changed to properly handle Source Resource strings.
14466 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14467 condition internally and must never be returned by AcpiOsThreadId.
14468 This reserved value was changed from 0 since Unix systems allow a
14473 Driver code reorganized to enhance portability
14475 Added a kernel configuration option to control ACPI_DEBUG
14477 Fixed the EC driver to honor _GLK.
14479 ASL Compiler, version X2016:
14481 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14482 address space was set to 0, not 0x7f as it should be.
14484 ------------------------------------------
14485 Summary of changes for this label: 03_13_01
14487 ACPI CA Core Subsystem:
14489 During ACPI initialization, the _SB_._INI method is now run if
14492 Notify handler fix - notifies are deferred until the parent method
14493 completes execution. This fixes the "mutex already acquired"
14494 issue seen occasionally.
14496 Part of the "implicit conversion" rules in ACPI 2.0 have been
14497 found to cause compatibility problems with existing ASL/AML. The
14498 convert "result-to-target-type" implementation has been removed
14499 for stores to method Args and Locals. Source operand conversion
14500 is still fully implemented. Possible changes to ACPI 2.0
14501 specification pending.
14503 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14506 Fix for compiler warnings for 64-bit compiles.
14510 /proc output aligned for easier parsing.
14512 Release-version compile problem fixed.
14514 New kernel configuration options documented in Configure.help.
14516 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14521 Power resource driver integrated with bus manager.
14523 Fixed kernel fault during active cooling for thermal zones.
14527 The source code tree has been restructured.
14531 ------------------------------------------
14532 Summary of changes for this label: 03_02_01
14534 Linux OS Services Layer (OSL):
14536 Major revision of all Linux-specific code.
14538 Modularized all ACPI-specific drivers.
14540 Added new thermal zone and power resource drivers.
14542 Revamped /proc interface (new functionality is under /proc/acpi).
14544 New kernel configuration options.
14546 Linux known issues:
14548 New kernel configuration options not documented in Configure.help
14552 Module dependencies not currently implemented. If used, they
14553 should be loaded in this order: busmgr, power, ec, system,
14554 processor, battery, ac_adapter, button, thermal.
14556 Modules will not load if CONFIG_MODVERSION is set.
14558 IBM 600E - entering S5 may reboot instead of shutting down.
14560 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14563 Some systems may fail with "execution mutex already acquired"
14566 ACPI CA Core Subsystem:
14568 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14569 for the deadlock detection code. Defined to return a non-zero, 32-
14570 bit thread ID for the currently executing thread. May be a non-
14571 zero constant integer on single-thread systems.
14573 Implemented deadlock detection for internal subsystem mutexes. We
14574 may add conditional compilation for this code (debug only) later.
14576 ASL/AML Mutex object semantics are now fully supported. This
14577 includes multiple acquires/releases by owner and support for the
14579 Mutex SyncLevel parameter.
14581 A new "Force Release" mechanism automatically frees all ASL
14582 Mutexes that have been acquired but not released when a thread
14583 exits the interpreter. This forces conformance to the ACPI spec
14584 ("All mutexes must be released when an invocation exits") and
14585 prevents deadlocked ASL threads. This mechanism can be expanded
14586 (later) to monitor other resource acquisitions if OEM ASL code
14587 continues to misbehave (which it will).
14589 Several new ACPI exception codes have been added for the Mutex
14592 Recursive method calls are now allowed and supported (the ACPI
14593 spec does in fact allow recursive method calls.) The number of
14594 recursive calls is subject to the restrictions imposed by the
14595 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14598 Implemented support for the SyncLevel parameter for control
14599 methods (ACPI 2.0 feature)
14601 Fixed a deadlock problem when multiple threads attempted to use
14604 Fixed a problem where the string length of a String package
14605 element was not always set in a package returned from
14606 AcpiEvaluateObject.
14608 Fixed a problem where the length of a String package element was
14609 not always included in the length of the overall package returned
14610 from AcpiEvaluateObject.
14612 Added external interfaces (Acpi*) to the ACPI debug memory
14613 manager. This manager keeps a list of all outstanding
14614 allocations, and can therefore detect memory leaks and attempts to
14615 free memory blocks more than once. Useful for code such as the
14616 power manager, etc. May not be appropriate for device drivers.
14617 Performance with the debug code enabled is slow.
14619 The ACPI Global Lock is now an optional hardware element.
14621 ASL Compiler Version X2015:
14623 Integrated changes to allow the compiler to be generated on
14624 multiple platforms.
14626 Linux makefile added to generate the compiler on Linux
14630 All platform-specific headers have been moved to their own
14631 subdirectory, Include/Platform.
14633 New source file added, Interpreter/ammutex.c
14635 New header file, Include/acstruct.h
14639 The programmer reference has been updated for the following new
14640 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
14642 ------------------------------------------
14643 Summary of changes for this label: 02_08_01
14645 Core ACPI CA Subsystem: Fixed a problem where an error was
14646 incorrectly returned if the return resource buffer was larger than
14647 the actual data (in the resource interfaces).
14649 References to named objects within packages are resolved to the
14651 full pathname string before packages are returned directly (via
14652 the AcpiEvaluateObject interface) or indirectly via the resource
14655 Linux OS Services Layer (OSL):
14657 Improved /proc battery interface.
14660 Added C-state debugging output and other miscellaneous fixes.
14662 ASL Compiler Version X2014:
14664 All defined method arguments can now be used as local variables,
14665 including the ones that are not actually passed in as parameters.
14666 The compiler tracks initialization of the arguments and issues an
14667 exception if they are used without prior assignment (just like
14670 The -o option now specifies a filename prefix that is used for all
14671 output files, including the AML output file. Otherwise, the
14672 default behavior is as follows: 1) the AML goes to the file
14673 specified in the DSDT. 2) all other output files use the input
14674 source filename as the base.
14676 ------------------------------------------
14677 Summary of changes for this label: 01_25_01
14679 Core ACPI CA Subsystem: Restructured the implementation of object
14680 store support within the interpreter. This includes support for
14681 the Store operator as well as any ASL operators that include a
14684 Partially implemented support for Implicit Result-to-Target
14685 conversion. This is when a result object is converted on the fly
14686 to the type of an existing target object. Completion of this
14687 support is pending further analysis of the ACPI specification
14688 concerning this matter.
14690 CPU-specific code has been removed from the subsystem (hardware
14693 New Power Management Timer functions added
14695 Linux OS Services Layer (OSL): Moved system state transition code
14696 to the core, fixed it, and modified Linux OSL accordingly.
14698 Fixed C2 and C3 latency calculations.
14701 We no longer use the compilation date for the version message on
14702 initialization, but retrieve the version from AcpiGetSystemInfo().
14704 Incorporated for fix Sony VAIO machines.
14706 Documentation: The Programmer Reference has been updated and
14710 ASL Compiler: Version X2013: Fixed a problem where the line
14711 numbering and error reporting could get out of sync in the
14712 presence of multiple include files.
14714 ------------------------------------------
14715 Summary of changes for this label: 01_15_01
14717 Core ACPI CA Subsystem:
14719 Implemented support for type conversions in the execution of the
14720 ASL Concatenate operator (The second operand is converted to
14721 match the type of the first operand before concatenation.)
14723 Support for implicit source operand conversion is partially
14724 implemented. The ASL source operand types Integer, Buffer, and
14725 String are freely interchangeable for most ASL operators and are
14726 converted by the interpreter on the fly as required. Implicit
14727 Target operand conversion (where the result is converted to the
14728 target type before storing) is not yet implemented.
14730 Support for 32-bit and 64-bit BCD integers is implemented.
14732 Problem fixed where a field read on an aligned field could cause a
14733 read past the end of the field.
14735 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
14736 does not return a value, but the caller expects one. (The ASL
14737 compiler flags this as a warning.)
14742 1. Static typechecking of all operands is implemented. This
14743 prevents the use of invalid objects (such as using a Package where
14744 an Integer is required) at compile time instead of at interpreter
14746 2. The ASL source line is printed with ALL errors and warnings.
14747 3. Bug fix for source EOF without final linefeed.
14748 4. Debug option is split into a parse trace and a namespace trace.
14749 5. Namespace output option (-n) includes initial values for
14750 integers and strings.
14751 6. Parse-only option added for quick syntax checking.
14752 7. Compiler checks for duplicate ACPI name declarations
14755 1. Relaxed typechecking to allow interchangeability between
14756 strings, integers, and buffers. These types are now converted by
14757 the interpreter at runtime.
14758 2. Compiler reports time taken by each internal subsystem in the
14762 ------------------------------------------
14763 Summary of changes for this label: 12_14_00
14767 This is the first official release of the compiler. Since the
14768 compiler requires elements of the Core Subsystem, this label
14769 synchronizes everything.
14771 ------------------------------------------
14772 Summary of changes for this label: 12_08_00
14775 Fixed a problem where named references within the ASL definition
14776 of both OperationRegions and CreateXXXFields did not work
14777 properly. The symptom was an AE_AML_OPERAND_TYPE during
14778 initialization of the region/field. This is similar (but not
14779 related internally) to the problem that was fixed in the last
14782 Implemented both 32-bit and 64-bit support for the BCD ASL
14783 functions ToBCD and FromBCD.
14785 Updated all legal headers to include "2000" in the copyright
14788 ------------------------------------------
14789 Summary of changes for this label: 12_01_00
14791 Fixed a problem where method invocations within the ASL definition
14792 of both OperationRegions and CreateXXXFields did not work
14793 properly. The symptom was an AE_AML_OPERAND_TYPE during
14794 initialization of the region/field:
14796 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
14797 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
14800 Fixed a problem where operators with more than one nested
14801 subexpression would fail. The symptoms were varied, by mostly
14802 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
14803 problem that has gone unnoticed until now.
14805 Subtract (Add (1,2), Multiply (3,4))
14807 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
14808 previous build (The prefix part of a relative path was handled
14811 Fixed a problem where Operation Region initialization failed if
14812 the operation region name was a "namepath" instead of a simple
14813 "nameseg". Symptom was an AE_NO_OPERAND error.
14815 Fixed a problem where an assignment to a local variable via the
14816 indirect RefOf mechanism only worked for the first such
14817 assignment. Subsequent assignments were ignored.
14819 ------------------------------------------
14820 Summary of changes for this label: 11_15_00
14822 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
14823 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
14824 the AML interpreter does NOT have support for the new 2.0 ASL
14825 grammar terms at this time.
14827 All ACPI hardware access is via the GAS structures in the ACPI 2.0
14830 All physical memory addresses across all platforms are now 64 bits
14831 wide. Logical address width remains dependent on the platform
14834 AcpiOsMapMemory interface changed to a 64-bit physical address.
14836 The AML interpreter integer size is now 64 bits, as per the ACPI
14839 For backwards compatibility with ACPI 1.0, ACPI tables with a
14840 revision number less than 2 use 32-bit integers only.
14842 Fixed a problem where the evaluation of OpRegion operands did not
14843 always resolve them to numbers properly.
14845 ------------------------------------------
14846 Summary of changes for this label: 10_20_00
14848 Fix for CBN_._STA issue. This fix will allow correct access to
14849 CBN_ OpRegions when the _STA returns 0x8.
14851 Support to convert ACPI constants (Ones, Zeros, One) to actual
14852 values before a package object is returned
14854 Fix for method call as predicate to if/while construct causing
14855 incorrect if/while behavior
14857 Fix for Else block package lengths sometimes calculated wrong (if
14860 Fix for Processor object length field, was always zero
14862 Table load abort if FACP sanity check fails
14864 Fix for problem with Scope(name) if name already exists
14866 Warning emitted if a named object referenced cannot be found
14867 (resolved) during method execution.
14873 ------------------------------------------
14874 Summary of changes for this label: 9_29_00
14876 New table initialization interfaces: AcpiInitializeSubsystem no
14877 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
14878 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
14879 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
14882 Note: These interface changes require changes to all existing OSDs
14884 The PCI_Config default address space handler is always installed
14885 at the root namespace object.
14887 -------------------------------------------
14888 Summary of changes for this label: 09_15_00
14890 The new initialization architecture is implemented. New
14891 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
14892 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
14894 (Namespace is automatically loaded when a table is loaded)
14896 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
14897 52 bytes to 32 bytes. There is usually one of these for every
14898 namespace object, so the memory savings is significant.
14900 Implemented just-in-time evaluation of the CreateField operators.
14902 Bug fixes for IA-64 support have been integrated.
14904 Additional code review comments have been implemented
14906 The so-called "third pass parse" has been replaced by a final walk
14907 through the namespace to initialize all operation regions (address
14908 spaces) and fields that have not yet been initialized during the
14909 execution of the various _INI and REG methods.
14911 New file - namespace/nsinit.c
14913 -------------------------------------------
14914 Summary of changes for this label: 09_01_00
14916 Namespace manager data structures have been reworked to change the
14917 primary object from a table to a single object. This has
14918 resulted in dynamic memory savings of 3X within the namespace and
14919 2X overall in the ACPI CA subsystem.
14921 Fixed problem where the call to AcpiEvFindPciRootBuses was
14922 inadvertently left commented out.
14924 Reduced the warning count when generating the source with the GCC
14927 Revision numbers added to each module header showing the
14928 SourceSafe version of the file. Please refer to this version
14929 number when giving us feedback or comments on individual modules.
14931 The main object types within the subsystem have been renamed to
14932 clarify their purpose:
14934 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
14935 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
14936 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
14938 NOTE: no changes to the initialization sequence are included in
14941 -------------------------------------------
14942 Summary of changes for this label: 08_23_00
14944 Fixed problem where TerminateControlMethod was being called
14945 multiple times per method
14947 Fixed debugger problem where single stepping caused a semaphore to
14950 Improved performance through additional parse object caching -
14951 added ACPI_EXTENDED_OP type
14953 -------------------------------------------
14954 Summary of changes for this label: 08_10_00
14956 Parser/Interpreter integration: Eliminated the creation of
14957 complete parse trees for ACPI tables and control methods.
14958 Instead, parse subtrees are created and then deleted as soon as
14959 they are processed (Either entered into the namespace or executed
14960 by the interpreter). This reduces the use of dynamic kernel
14961 memory significantly. (about 10X)
14963 Exception codes broken into classes and renumbered. Be sure to
14964 recompile all code that includes acexcep.h. Hopefully we won't
14965 have to renumber the codes again now that they are split into
14966 classes (environment, programmer, AML code, ACPI table, and
14969 Fixed some additional alignment issues in the Resource Manager
14972 Implemented semaphore tracking in the AcpiExec utility, and fixed
14973 several places where mutexes/semaphores were being unlocked
14974 without a corresponding lock operation. There are no known
14975 semaphore or mutex "leaks" at this time.
14977 Fixed the case where an ASL Return operator is used to return an
14980 -------------------------------------------
14981 Summary of changes for this label: 07_28_00
14983 Fixed a problem with the way addresses were calculated in
14984 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
14985 manifested itself when a Field was created with WordAccess or
14986 DwordAccess, but the field unit defined within the Field was less
14988 than a Word or Dword.
14990 Fixed a problem in AmlDumpOperands() module's loop to pull
14991 operands off of the operand stack to display information. The
14992 problem manifested itself as a TLB error on 64-bit systems when
14993 accessing an operand stack with two or more operands.
14995 Fixed a problem with the PCI configuration space handlers where
14996 context was getting confused between accesses. This required a
14997 change to the generic address space handler and address space
14998 setup definitions. Handlers now get both a global handler context
14999 (this is the one passed in by the user when executing
15000 AcpiInstallAddressSpaceHandler() and a specific region context
15001 that is unique to each region (For example, the _ADR, _SEG and
15002 _BBN values associated with a specific region). The generic
15003 function definitions have changed to the following:
15005 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
15006 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
15007 *HandlerContext, // This used to be void *Context void
15008 *RegionContext); // This is an additional parameter
15010 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
15011 RegionHandle, UINT32 Function, void *HandlerContext, void
15012 **RegionContext); // This used to be **ReturnContext
15014 -------------------------------------------
15015 Summary of changes for this label: 07_21_00
15017 Major file consolidation and rename. All files within the
15018 interpreter have been renamed as well as most header files. This
15019 was done to prevent collisions with existing files in the host
15020 OSs -- filenames such as "config.h" and "global.h" seem to be
15021 quite common. The VC project files have been updated. All
15022 makefiles will require modification.
15024 The parser/interpreter integration continues in Phase 5 with the
15025 implementation of a complete 2-pass parse (the AML is parsed
15026 twice) for each table; This avoids the construction of a huge
15027 parse tree and therefore reduces the amount of dynamic memory
15028 required by the subsystem. Greater use of the parse object cache
15029 means that performance is unaffected.
15031 Many comments from the two code reviews have been rolled in.
15033 The 64-bit alignment support is complete.
15035 -------------------------------------------
15036 Summary of changes for this label: 06_30_00
15038 With a nod and a tip of the hat to the technology of yesteryear,
15039 we've added support in the source code for 80 column output
15040 devices. The code is now mostly constrained to 80 columns or
15041 less to support environments and editors that 1) cannot display
15042 or print more than 80 characters on a single line, and 2) cannot
15043 disable line wrapping.
15045 A major restructuring of the namespace data structure has been
15046 completed. The result is 1) cleaner and more
15047 understandable/maintainable code, and 2) a significant reduction
15048 in the dynamic memory requirement for each named ACPI object
15051 -------------------------------------------
15052 Summary of changes for this label: 06_23_00
15054 Linux support has been added. In order to obtain approval to get
15055 the ACPI CA subsystem into the Linux kernel, we've had to make
15056 quite a few changes to the base subsystem that will affect all
15057 users (all the changes are generic and OS- independent). The
15058 effects of these global changes have been somewhat far reaching.
15059 Files have been merged and/or renamed and interfaces have been
15060 renamed. The major changes are described below.
15062 Osd* interfaces renamed to AcpiOs* to eliminate namespace
15063 pollution/confusion within our target kernels. All OSD
15064 interfaces must be modified to match the new naming convention.
15066 Files merged across the subsystem. A number of the smaller source
15067 and header files have been merged to reduce the file count and
15068 increase the density of the existing files. There are too many
15069 to list here. In general, makefiles that call out individual
15070 files will require rebuilding.
15072 Interpreter files renamed. All interpreter files now have the
15073 prefix am* instead of ie* and is*.
15075 Header files renamed: The acapi.h file is now acpixf.h. The
15076 acpiosd.h file is now acpiosxf.h. We are removing references to
15077 the acronym "API" since it is somewhat windowsy. The new name is
15078 "external interface" or xface or xf in the filenames.j
15081 All manifest constants have been forced to upper case (some were
15082 mixed case.) Also, the string "ACPI_" has been prepended to many
15083 (not all) of the constants, typedefs, and structs.
15085 The globals "DebugLevel" and "DebugLayer" have been renamed
15086 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
15088 All other globals within the subsystem are now prefixed with
15089 "AcpiGbl_" Internal procedures within the subsystem are now
15090 prefixed with "Acpi" (with only a few exceptions). The original
15091 two-letter abbreviation for the subcomponent remains after "Acpi"
15092 - for example, CmCallocate became AcpiCmCallocate.
15094 Added a source code translation/conversion utility. Used to
15095 generate the Linux source code, it can be modified to generate
15096 other types of source as well. Can also be used to cleanup
15097 existing source by removing extraneous spaces and blank lines.
15098 Found in tools/acpisrc/*
15100 OsdUnMapMemory was renamed to OsdUnmapMemory and then
15101 AcpiOsUnmapMemory. (UnMap became Unmap).
15103 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
15104 When set to one, this indicates that the caller wants to use the
15106 semaphore as a mutex, not a counting semaphore. ACPI CA uses
15107 both types. However, implementers of this call may want to use
15108 different OS primitives depending on the type of semaphore
15109 requested. For example, some operating systems provide separate
15111 "mutex" and "semaphore" interfaces - where the mutex interface is
15112 much faster because it doesn't have all the overhead of a full
15113 semaphore implementation.
15115 Fixed a deadlock problem where a method that accesses the PCI
15116 address space can block forever if it is the first access to the
15119 -------------------------------------------
15120 Summary of changes for this label: 06_02_00
15122 Support for environments that cannot handle unaligned data
15123 accesses (e.g. firmware and OS environments devoid of alignment
15124 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
15125 been added (via configurable macros) in these three areas: -
15126 Transfer of data from the raw AML byte stream is done via byte
15127 moves instead of word/dword/qword moves. - External objects are
15128 aligned within the user buffer, including package elements (sub-
15129 objects). - Conversion of name strings to UINT32 Acpi Names is now
15132 The Store operator was modified to mimic Microsoft's
15133 implementation when storing to a Buffer Field.
15135 Added a check of the BM_STS bit before entering C3.
15137 The methods subdirectory has been obsoleted and removed. A new
15138 file, cmeval.c subsumes the functionality.
15140 A 16-bit (DOS) version of AcpiExec has been developed. The
15141 makefile is under the acpiexec directory.