1 ----------------------------------------
2 25 March 2014. Summary of changes for version 20140325:
4 1) ACPICA kernel-resident subsystem:
6 Updated the auto-serialize feature for control methods. This feature
7 automatically serializes all methods that create named objects in order
8 to prevent runtime errors. The update adds support to ignore the
9 currently executing AML SyncLevel when invoking such a method, in order
10 to prevent disruption of any existing SyncLevel priorities that may exist
11 in the AML code. Although the use of SyncLevels is relatively rare, this
12 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
13 appear on some machines starting with the 20140214 release.
15 Added a new external interface to allow the host to install ACPI tables
16 very early, before the namespace is even created. AcpiInstallTable gives
17 the host additional flexibility for ACPI table management. Tables can be
18 installed directly by the host as if they had originally appeared in the
19 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
20 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
21 with additional internal restructuring and cleanup. See the ACPICA
22 Reference for interface details. Lv Zheng.
24 Added validation of the checksum for all incoming dynamically loaded
25 tables (via external interfaces or via AML Load/LoadTable operators). Lv
28 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
29 and GPE handler removal. Restructured calls to eliminate possible race
32 Added a warning for the use/execution of the ASL/AML Unload (table)
33 operator. This will help detect and identify machines that use this
34 operator if and when it is ever used. This operator has never been seen
35 in the field and the usage model and possible side-effects of the drastic
36 runtime action of a full table removal are unknown.
38 Reverted the use of #pragma push/pop which was introduced in the 20140214
39 release. It appears that push and pop are not implemented by enough
40 compilers to make the use of this feature feasible for ACPICA at this
41 time. However, these operators may be deployed in a future ACPICA
44 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
47 Source code generation:
48 1) Disabled the use of the "strchr" macro for the gcc-specific
49 generation. For some versions of gcc, this macro can periodically expose
50 a compiler bug which in turn causes compile-time error(s).
51 2) Added support for PPC64 compilation. Colin Ian King.
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: 97.0K Code, 27.2K Data, 124.2K Total
60 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
62 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
63 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
66 2) iASL Compiler/Disassembler and Tools:
68 Disassembler: Added several new features to improve the readability of
69 the resulting ASL code. Extra information is emitted within comment
70 fields in the ASL code:
71 1) Known _HID/_CID values are decoded to descriptive text.
72 2) Standard values for the Notify() operator are decoded to descriptive
74 3) Target operands are expanded to full pathnames (in a comment) when
77 Disassembler: Miscellaneous updates for extern() handling:
78 1) Abort compiler if file specified by -fe option does not exist.
79 2) Silence unnecessary warnings about argument count mismatches.
80 3) Update warning messages concerning unresolved method externals.
81 4) Emit "UnknownObj" keyword for externals whose type cannot be
85 1) Added the -a option to display both the ASL syntax and the AML
86 encoding for an input ASL operator. This effectively displays all known
87 information about an ASL operator with one AcpiHelp invocation.
88 2) Added substring match support (similar to a wildcard) for the -i
89 (_HID/PNP IDs) option.
91 iASL/Disassembler: Since this tool does not yet support execution on big-
92 endian machines, added detection of endianness and an error message if
93 execution is attempted on big-endian. Support for big-endian within iASL
94 is a feature that is on the ACPICA to-be-done list.
97 1) Remove option to extract binary files from an acpidump; this function
98 is made obsolete by the AcpiXtract utility.
99 2) General cleanup of open files and allocated buffers.
101 ----------------------------------------
102 14 February 2014. Summary of changes for version 20140214:
104 1) ACPICA kernel-resident subsystem:
106 Implemented a new mechanism to proactively prevent problems with ill-
107 behaved reentrant control methods that create named ACPI objects. This
108 behavior is illegal as per the ACPI specification, but is nonetheless
109 frequently seen in the field. Previously, this could lead to an
110 AE_ALREADY_EXISTS exception if the method was actually entered by more
111 than one thread. This new mechanism detects such methods at table load
112 time and marks them "serialized" to prevent reentrancy. A new global
113 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
114 feature if desired. This mechanism and global option obsoletes and
115 supersedes the previous AcpiGbl_SerializeAllMethods option.
117 Added the "Windows 2013" string to the _OSI support. ACPICA will now
118 respond TRUE to _OSI queries with this string. It is the stated policy of
119 ACPICA to add new strings to the _OSI support as soon as possible after
120 they are defined. See the full ACPICA _OSI policy which has been added to
121 the utilities/utosi.c file.
123 Hardened/updated the _PRT return value auto-repair code:
124 1) Do not abort the repair on a single subpackage failure, continue to
125 check all subpackages.
126 2) Add check for the minimum subpackage length (4).
127 3) Properly handle extraneous NULL package elements.
129 Added support to avoid the possibility of infinite loops when traversing
130 object linked lists. Never allow an infinite loop, even in the face of
131 corrupted object lists.
133 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
134 pack(pop) directives to ensure that the ACPICA headers are independent of
135 compiler settings or other host headers.
137 Example Code and Data Size: These are the sizes for the OS-independent
138 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
139 debug version of the code includes the debug output trace mechanism and
140 has a much larger code and data size.
143 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
144 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
146 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
147 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
150 2) iASL Compiler/Disassembler and Tools:
152 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
153 first reserved field was incorrectly forced to have a value of zero. This
154 change correctly forces the field to have a value of one. ACPICA BZ 1081.
156 Debugger: Added missing support for the "Extra" and "Data" subobjects
157 when displaying object data.
159 Debugger: Added support to display entire object linked lists when
160 displaying object data.
162 iASL: Removed the obsolete -g option to obtain ACPI tables from the
163 Windows registry. This feature has been superseded by the acpidump
166 ----------------------------------------
167 14 January 2014. Summary of changes for version 20140114:
169 1) ACPICA kernel-resident subsystem:
171 Updated all ACPICA copyrights and signons to 2014. Added the 2014
172 copyright to all module headers and signons, including the standard Linux
173 header. This affects virtually every file in the ACPICA core subsystem,
174 iASL compiler, all ACPICA utilities, and the test suites.
176 Improved parameter validation for AcpiInstallGpeBlock. Added the
178 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
179 2) There is not already a GPE block attached to the device.
180 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
183 Correctly support "references" in the ACPI_OBJECT. This change fixes the
184 support to allow references (namespace nodes) to be passed as arguments
185 to control methods via the evaluate object interface. This is probably
186 most useful for testing purposes, however.
188 Improved support for 32/64 bit physical addresses in printf()-like
189 output. This change improves the support for physical addresses in printf
190 debug statements and other output on both 32-bit and 64-bit hosts. It
191 consistently outputs the appropriate number of bytes for each host. The
192 %p specifier is unsatisfactory since it does not emit uniform output on
193 all hosts/clib implementations (on some, leading zeros are not supported,
194 leading to difficult-to-read output).
196 Example Code and Data Size: These are the sizes for the OS-independent
197 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
198 debug version of the code includes the debug output trace mechanism and
199 has a much larger code and data size.
202 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
203 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
205 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
206 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
209 2) iASL Compiler/Disassembler and Tools:
211 iASL: Fix a possible fault when using the Connection() operator. Fixes a
212 problem if the parent Field definition for the Connection operator refers
213 to an operation region that does not exist. ACPICA BZ 1064.
215 AcpiExec: Load of local test tables is now optional. The utility has the
216 capability to load some various tables to test features of ACPICA.
217 However, there are enough of them that the output of the utility became
218 confusing. With this change, only the required local tables are displayed
219 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
220 line specification. This makes the default output simler and easier to
221 understand. The -el command line option restores the original behavior
222 for testing purposes.
224 AcpiExec: Added support for overlapping operation regions. This change
225 expands the simulation of operation regions by supporting regions that
226 overlap within the given address space. Supports SystemMemory and
227 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
229 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
230 allows AcpiExec to simulate these address spaces, similar to the current
231 support for SystemMemory and SystemIO.
233 Debugger: Added new command to read/write/compare all namespace objects.
234 The command "test objects" will exercise the entire namespace by writing
235 new values to each data object, and ensuring that the write was
236 successful. The original value is then restored and verified.
238 Debugger: Added the "test predefined" command. This change makes this
239 test public and puts it under the new "test" command. The test executes
240 each and every predefined name within the current namespace.
242 ----------------------------------------
243 18 December 2013. Summary of changes for version 20131218:
245 Global note: The ACPI 5.0A specification was released this month. There
246 are no changes needed for ACPICA since this release of ACPI is an
247 errata/clarification release. The specification is available at
251 1) ACPICA kernel-resident subsystem:
253 Added validation of the XSDT root table if it is present. Some older
254 platforms contain an XSDT that is ill-formed or otherwise invalid (such
255 as containing some or all entries that are NULL pointers). This change
256 adds a new function to validate the XSDT before actually using it. If the
257 XSDT is found to be invalid, ACPICA will now automatically fall back to
258 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
259 ACPICA and enhanced by Lv Zheng and Bob Moore.
261 Added a runtime option to ignore the XSDT and force the use of the RSDT.
262 This change adds a runtime option that will force ACPICA to use the RSDT
263 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
264 requires that an XSDT be used instead of the RSDT, the XSDT has been
265 found to be corrupt or ill-formed on some machines. Lv Zheng.
267 Added a runtime option to favor 32-bit FADT register addresses over the
268 64-bit addresses. This change adds an option to favor 32-bit FADT
269 addresses when there is a conflict between the 32-bit and 64-bit versions
270 of the same register. The default behavior is to use the 64-bit version
271 in accordance with the ACPI specification. This can now be overridden via
272 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
274 During the change above, the internal "Convert FADT" and "Verify FADT"
275 functions have been merged to simplify the code, making it easier to
276 understand and maintain. ACPICA BZ 933.
278 Improve exception reporting and handling for GPE block installation.
279 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
280 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
282 Added helper macros to extract bus/segment numbers from the HEST table.
283 This change adds two macros to extract the encoded bus and segment
284 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
285 Betty Dall <betty.dall@hp.com>
287 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
288 by ACPICA. It is not a public macro, so it should have no effect on
289 existing OSV code. Lv Zheng.
291 Example Code and Data Size: These are the sizes for the OS-independent
292 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
293 debug version of the code includes the debug output trace mechanism and
294 has a much larger code and data size.
297 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
298 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
300 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
301 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
304 2) iASL Compiler/Disassembler and Tools:
306 Disassembler: Improved pathname support for emitted External()
307 statements. This change adds full pathname support for external names
308 that have been resolved internally by the inclusion of additional ACPI
309 tables (via the iASL -e option). Without this change, the disassembler
310 can emit multiple externals for the same object, or it become confused
311 when the Scope() operator is used on an external object. Overall, greatly
312 improves the ability to actually recompile the emitted ASL code when
313 objects a referenced across multiple ACPI tables. Reported by Michael
314 Tsirkin (mst@redhat.com).
316 Tests/ASLTS: Updated functional control suite to execute with no errors.
317 David Box. Fixed several errors related to the testing of the interpreter
318 slack mode. Lv Zheng.
320 iASL: Added support to detect names that are declared within a control
321 method, but are unused (these are temporary names that are only valid
322 during the time the method is executing). A remark is issued for these
323 cases. ACPICA BZ 1022.
325 iASL: Added full support for the DBG2 table. Adds full disassembler,
326 table compiler, and template generator support for the DBG2 table (Debug
329 iASL: Added full support for the PCCT table, update the table definition.
330 Updates the PCCT table definition in the actbl3.h header and adds table
331 compiler and template generator support.
333 iASL: Added an option to emit only error messages (no warnings/remarks).
334 The -ve option will enable only error messages, warnings and remarks are
335 suppressed. This can simplify debugging when only the errors are
336 important, such as when an ACPI table is disassembled and there are many
337 warnings and remarks -- but only the actual errors are of real interest.
339 Example ACPICA code (source/tools/examples): Updated the example code so
340 that it builds to an actual working program, not just example code. Added
341 ACPI tables and execution of an example control method in the DSDT. Added
342 makefile support for Unix generation.
344 ----------------------------------------
345 15 November 2013. Summary of changes for version 20131115:
347 This release is available at https://acpica.org/downloads
350 1) ACPICA kernel-resident subsystem:
352 Resource Manager: Fixed loop termination for the "get AML length"
353 function. The loop previously had an error termination on a NULL resource
354 pointer, which can never happen since the loop simply increments a valid
355 resource pointer. This fix changes the loop to terminate with an error on
356 an invalid end-of-buffer condition. The problem can be seen as an
357 infinite loop by callers to AcpiSetCurrentResources with an invalid or
358 corrupted resource descriptor, or a resource descriptor that is missing
359 an END_TAG descriptor. Reported by Dan Carpenter
360 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
362 Table unload and ACPICA termination: Delete all attached data objects
363 during namespace node deletion. This fix updates namespace node deletion
364 to delete the entire list of attached objects (attached via
365 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
366 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
368 ACPICA termination: Added support to delete all objects attached to the
369 root namespace node. This fix deletes any and all objects that have been
370 attached to the root node via AcpiAttachData. Previously, none of these
371 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
373 Debug output: Do not emit the function nesting level for the in-kernel
374 build. The nesting level is really only useful during a single-thread
375 execution. Therefore, only enable this output for the AcpiExec utility.
376 Also, only emit the thread ID when executing under AcpiExec (Context
377 switches are still always detected and a message is emitted). ACPICA BZ
380 Example Code and Data Size: These are the sizes for the OS-independent
381 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
382 debug version of the code includes the debug output trace mechanism and
383 has a much larger code and data size.
386 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
387 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
389 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
390 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
393 2) iASL Compiler/Disassembler and Tools:
395 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
396 correct portable POSIX header for terminal control functions.
398 Disassembler: Fixed control method invocation issues related to the use
399 of the CondRefOf() operator. The problem is seen in the disassembly where
400 control method invocations may not be disassembled properly if the
401 control method name has been used previously as an argument to CondRefOf.
402 The solution is to not attempt to emit an external declaration for the
403 CondRefOf target (it is not necessary in the first place). This prevents
404 disassembler object type confusion. ACPICA BZ 988.
406 Unix Makefiles: Added an option to disable compiler optimizations and the
407 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
408 with optimizations (reportedly, gcc 4.4 for example). This change adds a
409 command line option for make (NOOPT) that disables all compiler
410 optimizations and the _FORTIFY_SOURCE compiler flag. The default
411 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
412 1034. Lv Zheng, Bob Moore.
414 Tests/ASLTS: Added options to specify individual test cases and modes.
415 This allows testers running aslts.sh to optionally specify individual
416 test modes and test cases. Also added an option to disable the forced
417 generation of the ACPICA tools from source if desired. Lv Zheng.
419 ----------------------------------------
420 27 September 2013. Summary of changes for version 20130927:
422 This release is available at https://acpica.org/downloads
425 1) ACPICA kernel-resident subsystem:
427 Fixed a problem with store operations to reference objects. This change
428 fixes a problem where a Store operation to an ArgX object that contained
430 reference to a field object did not complete the automatic dereference
432 then write to the actual field object. Instead, the object type of the
433 field object was inadvertently changed to match the type of the source
434 operand. The new behavior will actually write to the field object (buffer
435 field or field unit), thus matching the correct ACPI-defined behavior.
437 Implemented support to allow the host to redefine individual OSL
438 prototypes. This change enables the host to redefine OSL prototypes found
439 in the acpiosxf.h file. This allows the host to implement OSL interfaces
440 with a macro or inlined function. Further, it allows the host to add any
441 additional required modifiers such as __iomem, __init, __exit, etc., as
442 necessary on a per-interface basis. Enables maximum flexibility for the
443 OSL interfaces. Lv Zheng.
445 Hardcoded the access width for the FADT-defined reset register. The ACPI
446 specification requires the reset register width to be 8 bits. ACPICA now
447 hardcodes the width to 8 and ignores the FADT width value. This provides
448 compatibility with other ACPI implementations that have allowed BIOS code
449 with bad register width values to go unnoticed. Matthew Garett, Bob
453 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
455 in the OSL header (acpiosxf). The change modifies the position of this
456 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
457 build issues if the OSL defines the implementation of the interface to be
458 an inline stub function. Lv Zheng.
460 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
461 initialization interfaces. This change adds a new macro for the main init
462 and terminate external interfaces in order to support hosts that require
463 additional or different processing for these functions. Changed from
464 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
467 Cleaned up the memory allocation macros for configurability. In the
469 case, the ACPI_ALLOCATE and related macros now resolve directly to their
470 respective AcpiOs* OSL interfaces. Two options:
471 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
472 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
473 2) For AcpiExec (and for debugging), the macros can optionally be
475 to the local ACPICA interfaces that track each allocation (local tracking
476 is used to immediately detect memory leaks).
479 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
480 to predefine this macro to either TRUE or FALSE during the system build.
482 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
484 Example Code and Data Size: These are the sizes for the OS-independent
485 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
486 debug version of the code includes the debug output trace mechanism and
487 has a much larger code and data size.
490 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
491 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
493 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
494 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
497 2) iASL Compiler/Disassembler and Tools:
499 iASL: Implemented wildcard support for the -e option. This simplifies use
500 when there are many SSDTs that must be included to resolve external
502 declarations. ACPICA BZ 1041. Example:
503 iasl -e ssdt*.dat -d dsdt.dat
505 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
506 adds a portable module that implements full history and limited line
507 editing for Unix and Linux systems. It does not use readline() due to
508 portability issues. Instead it uses the POSIX termio interface to put the
509 terminal in raw input mode so that the various special keys can be
511 (such as up/down-arrow for history support and left/right-arrow for line
512 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
514 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
515 one or more spaces. This provides compatible with early or different
516 versions of the AcpiDump utility. ACPICA BZ 1044.
518 AcpiDump: Do not ignore tables that contain only an ACPI table header.
519 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
520 no other data. This change adds support to dump these tables. Any tables
521 shorter than the length of an ACPI table header remain in error (an error
522 message is emitted). Reported by Yi Li.
524 Debugger: Echo actual command along with the "unknown command" message.
526 ----------------------------------------
527 23 August 2013. Summary of changes for version 20130823:
529 1) ACPICA kernel-resident subsystem:
531 Implemented support for host-installed System Control Interrupt (SCI)
532 handlers. Certain ACPI functionality requires the host to handle raw
533 SCIs. For example, the "SCI Doorbell" that is defined for memory power
534 state support requires the host device driver to handle SCIs to examine
535 if the doorbell has been activated. Multiple SCI handlers can be
536 installed to allow for future expansion. New external interfaces are
537 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
538 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
540 Operation region support: Never locally free the handler "context"
541 pointer. This change removes some dangerous code that attempts to free
542 the handler context pointer in some (rare) circumstances. The owner of
543 the handler owns this pointer and the ACPICA code should never touch it.
544 Although not seen to be an issue in any kernel, it did show up as a
545 problem (fault) under AcpiExec. Also, set the internal storage field for
546 the context pointer to zero when the region is deactivated, simply for
547 sanity. David Box. ACPICA BZ 1039.
549 AcpiRead: On error, do not modify the return value target location. If an
550 error happens in the middle of a split 32/32 64-bit I/O operation, do not
551 modify the target of the return value pointer. Makes the code consistent
552 with the rest of ACPICA. Bjorn Helgaas.
554 Example Code and Data Size: These are the sizes for the OS-independent
555 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
556 debug version of the code includes the debug output trace mechanism and
557 has a much larger code and data size.
560 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
561 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
563 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
564 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
567 2) iASL Compiler/Disassembler and Tools:
569 AcpiDump: Implemented several new features and fixed some problems:
570 1) Added support to dump the RSDP, RSDT, and XSDT tables.
571 2) Added support for multiple table instances (SSDT, UEFI).
572 3) Added option to dump "customized" (overridden) tables (-c).
573 4) Fixed a problem where some table filenames were improperly
575 5) Improved some error messages, removed some unnecessary messages.
577 iASL: Implemented additional support for disassembly of ACPI tables that
578 contain invocations of external control methods. The -fe<file> option
579 allows the import of a file that specifies the external methods along
580 with the required number of arguments for each -- allowing for the
581 correct disassembly of the table. This is a workaround for a limitation
582 of AML code where the disassembler often cannot determine the number of
583 arguments required for an external control method and generates incorrect
584 ASL code. See the iASL reference for details. ACPICA BZ 1030.
586 Debugger: Implemented a new command (paths) that displays the full
587 pathnames (namepaths) and object types of all objects in the namespace.
588 This is an alternative to the namespace command.
590 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
591 mechanism and any installed handlers.
593 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
594 This can occur if there are too many parent prefixes in a namepath (for
595 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
597 Application OSLs: Set the return value for the PCI read functions. These
598 functions simply return AE_OK, but should set the return value to zero
599 also. This change implements this. ACPICA BZ 1038.
601 Debugger: Prevent possible command line buffer overflow. Increase the
602 size of a couple of the debugger line buffers, and ensure that overflow
603 cannot happen. ACPICA BZ 1037.
605 iASL: Changed to abort immediately on serious errors during the parsing
606 phase. Due to the nature of ASL, there is no point in attempting to
607 compile these types of errors, and they typically end up causing a
608 cascade of hundreds of errors which obscure the original problem.
610 ----------------------------------------
611 25 July 2013. Summary of changes for version 20130725:
613 1) ACPICA kernel-resident subsystem:
615 Fixed a problem with the DerefOf operator where references to FieldUnits
616 and BufferFields incorrectly returned the parent object, not the actual
617 value of the object. After this change, a dereference of a FieldUnit
618 reference results in a read operation on the field to get the value, and
619 likewise, the appropriate BufferField value is extracted from the target
622 Fixed a problem where the _WAK method could cause a fault under these
623 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
624 method returned no value. The problem is rarely seen because most kernels
625 run ACPICA in slack mode.
627 For the DerefOf operator, a fatal error now results if an attempt is made
628 to dereference a reference (created by the Index operator) to a NULL
629 package element. Provides compatibility with other ACPI implementations,
630 and this behavior will be added to a future version of the ACPI
633 The ACPI Power Management Timer (defined in the FADT) is now optional.
634 This provides compatibility with other ACPI implementations and will
635 appear in the next version of the ACPI specification. If there is no PM
636 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
637 zero in the FADT indicates no PM timer.
639 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
640 allows the host to globally enable/disable all vendor strings, all
641 feature strings, or both. Intended to be primarily used for debugging
642 purposes only. Lv Zheng.
644 Expose the collected _OSI data to the host via a global variable. This
645 data tracks the highest level vendor ID that has been invoked by the BIOS
646 so that the host (and potentially ACPICA itself) can change behaviors
647 based upon the age of the BIOS.
649 Example Code and Data Size: These are the sizes for the OS-independent
650 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
651 debug version of the code includes the debug output trace mechanism and
652 has a much larger code and data size.
655 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
656 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
658 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
659 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
662 2) iASL Compiler/Disassembler and Tools:
664 iASL: Created the following enhancements for the -so option (create
666 1)Add offsets for the last nameseg in each namepath for every supported
668 2)Add support for Processor, Device, Thermal Zone, and Scope objects
669 3)Add the actual AML opcode for the parent object of every supported
671 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
673 Disassembler: Emit all unresolved external symbols in a single block.
674 These are external references to control methods that could not be
675 resolved, and thus, the disassembler had to make a guess at the number of
678 iASL: The argument to the -T option (create table template) is now
679 optional. If not specified, the default table is a DSDT, typically the
682 ----------------------------------------
683 26 June 2013. Summary of changes for version 20130626:
685 1) ACPICA kernel-resident subsystem:
687 Fixed an issue with runtime repair of the _CST object. Null or invalid
688 elements were not always removed properly. Lv Zheng.
690 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
691 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
692 the maximum number of GPEs is 1016. Use of multiple GPE block devices
693 makes the system-wide number of GPEs essentially unlimited.
695 Example Code and Data Size: These are the sizes for the OS-independent
696 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
697 debug version of the code includes the debug output trace mechanism and
698 has a much larger code and data size.
701 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
702 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
704 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
705 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
708 2) iASL Compiler/Disassembler and Tools:
710 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
711 hosts. Now supports Linux, FreeBSD, and Windows.
713 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
714 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
716 iASL/Preprocessor: Implemented full support for nested
717 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
719 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
720 max. The original purpose of this constraint was to limit the amount of
721 debug output. However, the string function in question (UtPrintString) is
722 now used for the disassembler also, where 256 bytes is insufficient.
723 Reported by RehabMan@GitHub.
725 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
726 tables. ACPICA BZ 999. Lv Zheng.
728 iASL: Fixed a couple of error exit issues that could result in a "Could
729 not delete <file>" message during ASL compilation.
731 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
732 the actual signatures for these tables are "FACP" and "APIC",
735 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
736 tables are allowed to have multiple instances.
738 ----------------------------------------
739 17 May 2013. Summary of changes for version 20130517:
741 1) ACPICA kernel-resident subsystem:
743 Fixed a regression introduced in version 20130328 for _INI methods. This
744 change fixes a problem introduced in 20130328 where _INI methods are no
745 longer executed properly because of a memory block that was not
746 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
747 <tomasz.nowicki@linaro.org>.
749 Fixed a possible problem with the new extended sleep registers in the
751 5.0 FADT. Do not use these registers (even if populated) unless the HW-
752 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
755 Implemented return value repair code for _CST predefined objects: Sort
757 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
759 Implemented a debug-only option to disable loading of SSDTs from the
760 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
761 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
762 acglobal.h - ACPICA BZ 1005. Lv Zheng.
764 Fixed some issues in the ACPICA initialization and termination code:
765 Tomasz Nowicki <tomasz.nowicki@linaro.org>
766 1) Clear events initialized flag upon event component termination. ACPICA
768 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
769 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
770 4) Clear debug buffer global on termination to prevent possible multiple
771 delete. ACPICA BZ 1010.
773 Standardized all switch() blocks across the entire source base. After
775 years, different formatting for switch() had crept in. This change makes
776 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
778 Split some files to enhance ACPICA modularity and configurability:
779 1) Split buffer dump routines into utilities/utbuffer.c
780 2) Split internal error message routines into utilities/uterror.c
781 3) Split table print utilities into tables/tbprint.c
782 4) Split iASL command-line option processing into asloptions.c
784 Makefile enhancements:
785 1) Support for all new files above.
786 2) Abort make on errors from any subcomponent. Chao Guan.
787 3) Add build support for Apple Mac OS X. Liang Qi.
789 Example Code and Data Size: These are the sizes for the OS-independent
790 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
791 debug version of the code includes the debug output trace mechanism and
792 has a much larger code and data size.
795 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
796 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
798 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
799 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
802 2) iASL Compiler/Disassembler and Tools:
804 New utility: Implemented an easily portable version of the acpidump
805 utility to extract ACPI tables from the system (or a file) in an ASCII
807 dump format. The top-level code implements the various command line
808 options, file I/O, and table dump routines. To port to a new host, only
809 three functions need to be implemented to get tables -- since this
810 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
811 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
812 1) The Windows version obtains the ACPI tables from the Registry.
813 2) The Linux version is under development.
814 3) Other hosts - If an OS-dependent module is submitted, it will be
815 distributed with ACPICA.
817 iASL: Fixed a regression for -D preprocessor option (define symbol). A
818 restructuring/change to the initialization sequence caused this option to
819 no longer work properly.
821 iASL: Implemented a mechanism to disable specific warnings and remarks.
822 Adds a new command line option, "-vw <messageid> as well as "#pragma
823 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
825 iASL: Fix for too-strict package object validation. The package object
826 validation for return values from the predefined names is a bit too
827 strict, it does not allow names references within the package (which will
828 be resolved at runtime.) These types of references cannot be validated at
829 compile time. This change ignores named references within package objects
830 for names that return or define static packages.
832 Debugger: Fixed the 80-character command line limitation for the History
833 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
835 iASL: Added control method and package support for the -so option
836 (generates AML offset table for BIOS support.)
838 iASL: issue a remark if a non-serialized method creates named objects. If
839 a thread blocks within the method for any reason, and another thread
840 enters the method, the method will fail because an attempt will be made
842 create the same (named) object twice. In this case, issue a remark that
843 the method should be marked serialized. NOTE: may become a warning later.
846 ----------------------------------------
847 18 April 2013. Summary of changes for version 20130418:
849 1) ACPICA kernel-resident subsystem:
851 Fixed a possible buffer overrun during some rare but specific field unit
852 read operations. This overrun can only happen if the DSDT version is 1 --
853 meaning that all AML integers are 32 bits -- and the field length is
854 between 33 and 55 bits long. During the read, an internal buffer object
856 created for the field unit because the field is larger than an integer
858 bits). However, in this case, the buffer will be incorrectly written
859 beyond the end because the buffer length is less than the internal
861 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
862 long, but a full 8 bytes will be written.
864 Updated the Embedded Controller "orphan" _REG method support. This refers
865 to _REG methods under the EC device that have no corresponding operation
866 region. This is allowed by the ACPI specification. This update removes a
867 dependency on the existence an ECDT table. It will execute an orphan _REG
868 method as long as the operation region handler for the EC is installed at
869 the EC device node and not the namespace root. Rui Zhang (original
870 update), Bob Moore (update/integrate).
872 Implemented run-time argument typechecking for all predefined ACPI names
873 (_STA, _BIF, etc.) This change performs object typechecking on all
874 incoming arguments for all predefined names executed via
875 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
876 passing correct object types as well as the correct number of arguments
877 (therefore identifying any issues immediately). Also, the ASL/namespace
878 definition of the predefined name is checked against the ACPI
879 specification for the proper argument count. Adds one new file,
882 Changed an exception code for the ASL UnLoad() operator. Changed the
883 exception code for the case where the input DdbHandle is invalid, from
884 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
886 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
887 global makefile. The use of this flag causes compiler errors on earlier
888 versions of GCC, so it has been removed for compatibility.
890 Miscellaneous cleanup:
891 1) Removed some unused/obsolete macros
892 2) Fixed a possible memory leak in the _OSI support
893 3) Removed an unused variable in the predefined name support
894 4) Windows OSL: remove obsolete reference to a memory list field
896 Example Code and Data Size: These are the sizes for the OS-independent
897 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
898 debug version of the code includes the debug output trace mechanism and
899 has a much larger code and data size.
902 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
903 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
905 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
906 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
909 2) iASL Compiler/Disassembler and Tools:
911 AcpiExec: Added installation of a handler for the SystemCMOS address
912 space. This prevents control method abort if a method accesses this
915 AcpiExec: Added support for multiple EC devices, and now install EC
916 operation region handler(s) at the actual EC device instead of the
917 namespace root. This reflects the typical behavior of host operating
920 AcpiExec: Updated to ensure that all operation region handlers are
921 installed before the _REG methods are executed. This prevents a _REG
922 method from aborting if it accesses an address space has no handler.
923 AcpiExec installs a handler for every possible address space.
925 Debugger: Enhanced the "handlers" command to display non-root handlers.
926 This change enhances the handlers command to display handlers associated
927 with individual devices throughout the namespace, in addition to the
928 currently supported display of handlers associated with the root
932 ASL Test Suite: Several test suite errors have been identified and
933 resolved, reducing the total error count during execution. Chao Guan.
935 ----------------------------------------
936 28 March 2013. Summary of changes for version 20130328:
938 1) ACPICA kernel-resident subsystem:
940 Fixed several possible race conditions with the internal object reference
941 counting mechanism. Some of the external ACPICA interfaces update object
942 reference counts without holding the interpreter or namespace lock. This
943 change adds a spinlock to protect reference count updates on the internal
944 ACPICA objects. Reported by and with assistance from Andriy Gapon
947 FADT support: Removed an extraneous warning for very large GPE register
948 sets. This change removes a size mismatch warning if the legacy length
949 field for a GPE register set is larger than the 64-bit GAS structure can
950 accommodate. GPE register sets can be larger than the 255-bit width
951 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
953 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
954 return from this interface. Handles a possible timeout case if
955 ACPI_WAIT_FOREVER is modified by the host to be a value less than
956 "forever". Jung-uk Kim.
958 Predefined name support: Add allowed/required argument type information
960 the master predefined info table. This change adds the infrastructure to
961 enable typechecking on incoming arguments for all predefined
962 methods/objects. It does not actually contain the code that will fully
963 utilize this information, this is still under development. Also condenses
964 some duplicate code for the predefined names into a new module,
967 Example Code and Data Size: These are the sizes for the OS-independent
968 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
969 debug version of the code includes the debug output trace mechanism and
970 has a much larger code and data size.
973 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
974 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
976 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
977 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
980 2) iASL Compiler/Disassembler and Tools:
982 iASL: Implemented a new option to simplify the development of ACPI-
984 BIOS code. Adds support for a new "offset table" output file. The -so
985 option will create a C table containing the AML table offsets of various
986 named objects in the namespace so that BIOS code can modify them easily
988 boot time. This can simplify BIOS runtime code by eliminating expensive
989 searches for "magic values", enhancing boot times and adding greater
990 reliability. With assistance from Lee Hamel.
992 iASL: Allow additional predefined names to return zero-length packages.
993 Now, all predefined names that are defined by the ACPI specification to
994 return a "variable-length package of packages" are allowed to return a
995 zero length top-level package. This allows the BIOS to tell the host that
996 the requested feature is not supported, and supports existing BIOS/ASL
999 iASL: Changed the "result not used" warning to an error. This is the case
1000 where an ASL operator is effectively a NOOP because the result of the
1001 operation is not stored anywhere. For example:
1003 There is no target (missing 3rd argument), nor is the function return
1004 value used. This is potentially a very serious problem -- since the code
1005 was probably intended to do something, but for whatever reason, the value
1006 was not stored. Therefore, this issue has been upgraded from a warning to
1009 AcpiHelp: Added allowable/required argument types to the predefined names
1010 info display. This feature utilizes the recent update to the predefined
1011 names table (above).
1013 ----------------------------------------
1014 14 February 2013. Summary of changes for version 20130214:
1016 1) ACPICA Kernel-resident Subsystem:
1018 Fixed a possible regression on some hosts: Reinstated the safe return
1019 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1020 evaluated only once. Although these macros are not needed for the ACPICA
1021 code itself, they are often used by ACPI-related host device drivers
1023 the safe feature may be necessary.
1025 Fixed several issues related to the ACPI 5.0 reduced hardware support
1026 (SOC): Now ensure that if the platform declares itself as hardware-
1028 via the FADT, the following functions become NOOPs (and always return
1029 AE_OK) because ACPI is always enabled by definition on these machines:
1035 Dynamic Object Repair: Implemented additional runtime repairs for
1036 predefined name return values. Both of these repairs can simplify code in
1037 the related device drivers that invoke these methods:
1038 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1039 string to a Unicode buffer.
1040 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1042 lone end tag descriptor in the following cases: A Return(0) was executed,
1043 a null buffer was returned, or no object at all was returned (non-slack
1044 mode only). Adds a new file, nsconvert.c
1045 ACPICA BZ 998. Bob Moore, Lv Zheng.
1047 Resource Manager: Added additional code to prevent possible infinite
1049 while traversing corrupted or ill-formed resource template buffers. Check
1050 for zero-length resource descriptors in all code that loops through
1051 resource templates (the length field is used to index through the
1052 template). This change also hardens the external AcpiWalkResources and
1053 AcpiWalkResourceBuffer interfaces.
1055 Local Cache Manager: Enhanced the main data structure to eliminate an
1056 unnecessary mechanism to access the next object in the list. Actually
1057 provides a small performance enhancement for hosts that use the local
1058 ACPICA cache manager. Jung-uk Kim.
1060 Example Code and Data Size: These are the sizes for the OS-independent
1061 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1062 debug version of the code includes the debug output trace mechanism and
1063 has a much larger code and data size.
1066 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1067 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1069 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1070 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1073 2) iASL Compiler/Disassembler and Tools:
1075 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1076 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1077 that were made to the ACPI 5.0 specification.
1079 iASL/Disassembler: Added full support for the following new ACPI tables:
1080 1) The MTMR table (MID Timer Table)
1081 2) The VRTC table (Virtual Real Time Clock Table).
1082 Includes header file, disassembler, table compiler, and template support
1085 iASL: Implemented compile-time validation of package objects returned by
1086 predefined names. This new feature validates static package objects
1087 returned by the various predefined names defined to return packages. Both
1088 object types and package lengths are validated, for both parent packages
1089 and sub-packages, if any. The code is similar in structure and behavior
1091 the runtime repair mechanism within the AML interpreter and uses the
1092 existing predefined name information table. Adds a new file, aslprepkg.c.
1095 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1096 This feature detects a binary file with a valid ACPI table header and
1097 invokes the disassembler automatically. Eliminates the need to
1098 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1100 iASL/Disassembler: Added several warnings for the case where there are
1101 unresolved control methods during the disassembly. This can potentially
1102 cause errors when the output file is compiled, because the disassembler
1103 assumes zero method arguments in these cases (it cannot determine the
1104 actual number of arguments without resolution/definition of the method).
1106 Debugger: Added support to display all resources with a single command.
1107 Invocation of the resources command with no arguments will now display
1109 resources within the current namespace.
1111 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1114 ----------------------------------------
1115 17 January 2013. Summary of changes for version 20130117:
1117 1) ACPICA Kernel-resident Subsystem:
1119 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1120 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1121 objects to return a package containing one integer, most BIOS code
1123 two integers and the previous code reflects that. However, we also need
1125 support BIOS code that actually implements to the ACPI spec, and this
1126 change reflects this.
1128 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1129 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1130 C compilers that require this support.
1131 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1132 ACPI_DEBUG is already used by many of the various hosts.
1134 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1135 copyright to all module headers and signons, including the standard Linux
1136 header. This affects virtually every file in the ACPICA core subsystem,
1137 iASL compiler, all ACPICA utilities, and the test suites.
1139 Example Code and Data Size: These are the sizes for the OS-independent
1140 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1141 debug version of the code includes the debug output trace mechanism and
1142 has a much larger code and data size.
1145 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1146 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1148 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1149 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1152 2) iASL Compiler/Disassembler and Tools:
1154 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1155 prevent a possible fault on some hosts. Some C libraries modify the arg
1156 pointer parameter to vfprintf making it difficult to call it twice in the
1157 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1158 does not affect the Windows OSL since the Win C library does not modify
1159 the arg pointer. Chao Guan, Bob Moore.
1161 iASL: Fixed a possible infinite loop when the maximum error count is
1162 reached. If an output file other than the .AML file is specified (such as
1163 a listing file), and the maximum number of errors is reached, do not
1164 attempt to flush data to the output file(s) as the compiler is aborting.
1165 This can cause an infinite loop as the max error count code essentially
1166 keeps calling itself.
1168 iASL/Disassembler: Added an option (-in) to ignore NOOP
1170 Implemented for both the compiler and the disassembler. Often, the NOOP
1171 opcode is used as padding for packages that are changed dynamically by
1173 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1174 errors. This option causes the disassembler to ignore all NOOP opcodes
1175 (0xA3), and it also causes the compiler to ignore all ASL source code
1179 Debugger: Enhanced the Sleep command to execute all sleep states. This
1180 change allows Sleep to be invoked with no arguments and causes the
1181 debugger to execute all of the sleep states, 0-5, automatically.
1183 ----------------------------------------
1184 20 December 2012. Summary of changes for version 20121220:
1186 1) ACPICA Kernel-resident Subsystem:
1188 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1189 alternate entry point for AcpiWalkResources and improves the usability of
1190 the resource manager by accepting as input a buffer containing the output
1191 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1192 input buffer is not deleted by this interface so that it can be used by
1193 the host later. See the ACPICA reference for details.
1195 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1196 (DSDT version < 2). The constant will be truncated and this warning
1197 reflects that behavior.
1199 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1200 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1201 both get and set the new wake bit in these descriptors, separately from
1202 the existing share bit. Reported by Aaron Lu.
1204 Interpreter: Fix Store() when an implicit conversion is not possible. For
1205 example, in the cases such as a store of a string to an existing package
1206 object, implement the store as a CopyObject(). This is a small departure
1207 from the ACPI specification which states that the control method should
1209 aborted in this case. However, the ASLTS suite depends on this behavior.
1211 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1212 macros: check if debug output is currently enabled as soon as possible to
1213 minimize performance impact if debug is in fact not enabled.
1215 Source code restructuring: Cleanup to improve modularity. The following
1216 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1217 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1218 Associated makefiles and project files have been updated.
1220 Changed an exception code for LoadTable operator. For the case where one
1221 of the input strings is too long, change the returned exception code from
1222 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1224 Fixed a possible memory leak in dispatcher error path. On error, delete
1225 the mutex object created during method mutex creation. Reported by
1226 tim.gardner@canonical.com.
1228 Example Code and Data Size: These are the sizes for the OS-independent
1229 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1230 debug version of the code includes the debug output trace mechanism and
1231 has a much larger code and data size.
1234 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1235 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1237 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1238 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1241 2) iASL Compiler/Disassembler and Tools:
1243 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1244 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1245 will not allow the interpreter to differentiate between a method and a
1246 method invocation when these are used as an argument to the ObjectType
1247 operator. The ACPI specification change is to disallow a method
1249 (UserTerm) for the ObjectType operator.
1251 Finish support for the TPM2 and CSRT tables in the headers, table
1252 compiler, and disassembler.
1254 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1255 always expires immediately if the semaphore is not available. The
1257 code was using a relative-time timeout, but sem_timedwait requires the
1259 of an absolute time.
1261 iASL: Added a remark if the Timer() operator is used within a 32-bit
1262 table. This operator returns a 64-bit time value that will be truncated
1263 within a 32-bit table.
1265 iASL Source code restructuring: Cleanup to improve modularity. The
1266 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1267 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1271 ----------------------------------------
1272 14 November 2012. Summary of changes for version 20121114:
1274 1) ACPICA Kernel-resident Subsystem:
1276 Implemented a performance enhancement for ACPI/AML Package objects. This
1277 change greatly increases the performance of Package objects within the
1278 interpreter. It changes the processing of reference counts for packages
1280 optimizing for the most common case where the package sub-objects are
1281 either Integers, Strings, or Buffers. Increases the overall performance
1283 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1285 Chao Guan. ACPICA BZ 943.
1287 Implemented and deployed common macros to extract flag bits from resource
1288 descriptors. Improves readability and maintainability of the code. Fixes
1290 problem with the UART serial bus descriptor for the number of data bits
1291 flags (was incorrectly 2 bits, should be 3).
1293 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1294 of the macros and changed the SETx macros to the style of (destination,
1295 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1297 Example Code and Data Size: These are the sizes for the OS-independent
1298 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1299 debug version of the code includes the debug output trace mechanism and
1300 has a much larger code and data size.
1303 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1304 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1306 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1307 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1310 2) iASL Compiler/Disassembler and Tools:
1312 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1313 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1314 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1316 Disassembler: Fixed a problem with external declaration generation. Fixes
1317 a problem where an incorrect pathname could be generated for an external
1318 declaration if the original reference to the object includes leading
1319 carats (^). ACPICA BZ 984.
1321 Debugger: Completed a major update for the Disassemble<method> command.
1322 This command was out-of-date and did not properly disassemble control
1323 methods that had any reasonable complexity. This fix brings the command
1325 to the same level as the rest of the disassembler. Adds one new file,
1326 dmdeferred.c, which is existing code that is now common with the main
1327 disassembler and the debugger disassemble command. ACPICA MZ 978.
1329 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1330 Newer versions of Bison emit this prototype, so moved the prototype out
1332 the iASL header to where it is actually used in order to avoid a
1336 iASL/Tools: Standardized use of the stream I/O functions:
1337 1) Ensure check for I/O error after every fopen/fread/fwrite
1338 2) Ensure proper order of size/count arguments for fread/fwrite
1339 3) Use test of (Actual != Requested) after all fwrite, and most fread
1340 4) Standardize I/O error messages
1341 Improves reliability and maintainability of the code. Bob Moore, Lv
1345 Disassembler: Prevent duplicate External() statements. During generation
1346 of external statements, detect similar pathnames that are actually
1347 duplicates such as these:
1350 Remove all leading '\' characters from pathnames during the external
1351 statement generation so that duplicates will be detected and tossed.
1354 Tools: Replace low-level I/O with stream I/O functions. Replace
1355 open/read/write/close with the stream I/O equivalents
1356 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1359 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1360 name header so that AcpiXtract recognizes the output file/table.
1362 iASL: Remove obsolete -2 option flag. Originally intended to force the
1363 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1364 and the entire concept is now obsolete.
1366 ----------------------------------------
1367 18 October 2012. Summary of changes for version 20121018:
1370 1) ACPICA Kernel-resident Subsystem:
1372 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1373 introduced by late changes to the table as it was added to the ACPI 5.0
1374 specification. Includes header, disassembler, and data table compiler
1375 support as well as a new version of the MPST template.
1377 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1378 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1379 methods: _HID, _CID, and _UID.
1381 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1382 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1383 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1384 names for their various drivers. Affects the AcpiGetObjectInfo external
1385 interface, and other internal interfaces as well.
1387 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1388 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
1389 on machines that support non-aligned transfers. Optimizes for this case
1390 rather than using a strncpy. With assistance from Zheng Lv.
1392 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
1393 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
1395 Added a new debug print message for AML mutex objects that are force-
1396 released. At control method termination, any currently acquired mutex
1397 objects are force-released. Adds a new debug-only message for each one
1400 Audited/updated all ACPICA return macros and the function debug depth
1401 counter: 1) Ensure that all functions that use the various TRACE macros
1402 also use the appropriate ACPICA return macros. 2) Ensure that all normal
1403 return statements surround the return expression (value) with parens to
1404 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
1405 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
1407 Global source code changes/maintenance: All extra lines at the start and
1408 end of each source file have been removed for consistency. Also, within
1409 comments, all new sentences start with a single space instead of a double
1410 space, again for consistency across the code base.
1412 Example Code and Data Size: These are the sizes for the OS-independent
1413 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1414 debug version of the code includes the debug output trace mechanism and
1415 has a much larger code and data size.
1418 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1419 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1421 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1422 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1425 2) iASL Compiler/Disassembler and Tools:
1427 AcpiExec: Improved the algorithm used for memory leak/corruption
1428 detection. Added some intelligence to the code that maintains the global
1429 list of allocated memory. The list is now ordered by allocated memory
1430 address, significantly improving performance. When running AcpiExec on
1431 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
1432 on the platform and/or the environment. Note, this performance
1433 enhancement affects the AcpiExec utility only, not the kernel-resident
1436 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
1437 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
1438 incorrect table offset reported for invalid opcodes. Report the original
1439 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
1441 Disassembler: Enhanced the -vt option to emit the binary table data in
1442 hex format to assist with debugging.
1444 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
1445 size of file structure. Colin Ian King.
1447 ----------------------------------------
1448 13 September 2012. Summary of changes for version 20120913:
1451 1) ACPICA Kernel-resident Subsystem:
1453 ACPI 5.0: Added two new notify types for the Hardware Error Notification
1454 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
1458 Table Manager: Merged/removed duplicate code in the root table resize
1459 functions. One function is external, the other is internal. Lv Zheng,
1463 Makefiles: Completely removed the obsolete "Linux" makefiles under
1464 acpica/generate/linux. These makefiles are obsolete and have been
1467 the generic unix makefiles under acpica/generate/unix.
1469 Makefiles: Ensure that binary files always copied properly. Minor rule
1471 to ensure that the final binary output files are always copied up to the
1472 appropriate binary directory (bin32 or bin64.)
1474 Example Code and Data Size: These are the sizes for the OS-independent
1475 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1477 version of the code includes the debug output trace mechanism and has a
1479 larger code and data size.
1482 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1483 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1485 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1486 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1489 2) iASL Compiler/Disassembler and Tools:
1491 Disassembler: Fixed a possible fault during the disassembly of resource
1492 descriptors when a second parse is required because of the invocation of
1493 external control methods within the table. With assistance from
1494 adq@lidskialf.net. ACPICA BZ 976.
1496 iASL: Fixed a namepath optimization problem. An error can occur if the
1498 node that contains the namepath to be optimized does not have a parent
1500 that is a named object. This change fixes the problem.
1502 iASL: Fixed a regression where the AML file is not deleted on errors. The
1504 output file should be deleted if there are any errors during the
1507 only exception is if the -f (force output) option is used. ACPICA BZ 974.
1509 iASL: Added a feature to automatically increase internal line buffer
1511 Via realloc(), automatically increase the internal line buffer sizes as
1512 necessary to support very long source code lines. The current version of
1514 preprocessor requires a buffer long enough to contain full source code
1516 This change increases the line buffer(s) if the input lines go beyond the
1517 current buffer size. This eliminates errors that occurred when a source
1519 line was longer than the buffer.
1521 iASL: Fixed a problem with constant folding in method declarations. The
1522 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
1524 Type3 opcode was used.
1526 Debugger: Improved command help support. For incorrect argument count,
1528 full help for the command. For help command itself, allow an argument to
1531 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
1532 errors during execution of the suite. Guan Chao.
1534 ----------------------------------------
1535 16 August 2012. Summary of changes for version 20120816:
1538 1) ACPICA Kernel-resident Subsystem:
1540 Removed all use of the deprecated _GTS and _BFS predefined methods. The
1542 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
1543 deprecated and will probably be removed from the ACPI specification.
1545 does not invoke them, and reportedly never will. The final nail in the
1547 is that the ACPI specification states that these methods must be run with
1548 interrupts off, which is not going to happen in a kernel interpreter.
1550 Linux has removed all use of the methods also. It was discovered that
1551 invoking these functions caused failures on some machines, probably
1553 they were never tested since Windows does not call them. Affects two
1555 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
1558 Implemented support for complex bit-packed buffers returned from the _PLD
1559 (Physical Location of Device) predefined method. Adds a new external
1560 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
1562 structure. Note: C Bitfields cannot be used for this type of predefined
1563 structure since the memory layout of individual bitfields is not defined
1565 the C language. In addition, there are endian concerns where a compiler
1567 change the bitfield ordering based on the machine type. The new ACPICA
1568 interface eliminates these issues, and should be called after _PLD is
1569 executed. ACPICA BZ 954.
1571 Implemented a change to allow a scope change to root (via "Scope (\)")
1573 execution of module-level ASL code (code that is executed at table load
1576 Added the Windows8/Server2012 string for the _OSI method. This change
1579 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
1582 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
1584 and CSRT (Core System Resource Table).
1586 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
1587 names. This simplifies access to the buffers returned by these predefined
1588 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
1590 GPE support: Removed an extraneous parameter from the various low-level
1591 internal GPE functions. Tang Feng.
1593 Removed the linux makefiles from the unix packages. The generate/linux
1594 makefiles are obsolete and have been removed from the unix tarball
1596 packages. The replacement makefiles are under generate/unix, and there is
1598 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
1600 Updates for Unix makefiles:
1601 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
1602 2) Update linker flags (move to end of command line) for AcpiExec
1606 Split ACPICA initialization functions to new file, utxfinit.c. Split from
1607 utxface.c to improve modularity and reduce file size.
1609 Example Code and Data Size: These are the sizes for the OS-independent
1610 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1611 debug version of the code includes the debug output trace mechanism and
1613 much larger code and data size.
1616 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1617 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1619 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1620 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1623 2) iASL Compiler/Disassembler and Tools:
1625 iASL: Fixed a problem with constant folding for fixed-length constant
1626 expressions. The constant-folding code was not being invoked for constant
1627 expressions that allow the use of type 3/4/5 opcodes to generate
1629 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
1631 in the generation of invalid AML bytecode. ACPICA BZ 970.
1633 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
1634 apparently automatically emit some of the necessary externals. This
1636 handles these versions in order to eliminate generation warnings.
1638 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
1640 Disassembler: Add support to decode _PLD buffers. The decoded buffer
1642 within comments in the output file.
1644 Debugger: Fixed a regression with the "Threads" command where
1645 AE_BAD_PARAMETER was always returned.
1647 ----------------------------------------
1648 11 July 2012. Summary of changes for version 20120711:
1650 1) ACPICA Kernel-resident Subsystem:
1652 Fixed a possible fault in the return package object repair code. Fixes a
1653 problem that can occur when a lone package object is wrapped with an
1655 package object in order to force conformance to the ACPI specification.
1657 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
1661 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
1662 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
1663 ARB_DIS bit must be implemented in the host-dependent C3 processor power
1665 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
1667 Intel and other vendors. (for Intel: ICH4-M and earlier)
1669 This change removes the code to disable/enable bus master arbitration
1671 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
1673 resume problems on some machines. The change has been in use for over
1677 Implemented two new external interfaces to support host-directed dynamic
1679 table load and unload. They are intended to simplify the host
1681 of hot-plug support:
1682 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
1683 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
1685 See the ACPICA reference for additional details. Adds one new file,
1686 components/tables/tbxfload.c
1688 Implemented and deployed two new interfaces for errors and warnings that
1690 known to be caused by BIOS/firmware issues:
1691 AcpiBiosError: Prints "ACPI Firmware Error" message.
1692 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
1693 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
1695 and FADT errors. Additional deployment to be completed as appropriate in
1697 future. The associated conditional macros are ACPI_BIOS_ERROR and
1698 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
1703 Implicit notify support: ensure that no memory allocation occurs within a
1704 critical region. This fix moves a memory allocation outside of the time
1706 spinlock is held. Fixes issues on systems that do not allow this
1710 Split exception code utilities and tables into a new file,
1713 Example Code and Data Size: These are the sizes for the OS-independent
1714 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1716 version of the code includes the debug output trace mechanism and has a
1718 larger code and data size.
1721 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1722 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1724 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1725 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1728 2) iASL Compiler/Disassembler and Tools:
1730 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
1734 Debugger: Enhanced the "tables" command to emit additional information
1736 the current set of ACPI tables, including the owner ID and flags decode.
1738 Debugger: Reimplemented the "unload" command to use the new
1739 AcpiUnloadParentTable external interface. This command was disable
1741 due to need for an unload interface.
1743 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
1745 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
1747 ----------------------------------------
1748 20 June 2012. Summary of changes for version 20120620:
1751 1) ACPICA Kernel-resident Subsystem:
1753 Implemented support to expand the "implicit notify" feature to allow
1755 devices to be notified by a single GPE. This feature automatically
1757 runtime device notification in the absence of a BIOS-provided GPE control
1758 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
1760 provided by ACPICA for Windows compatibility, and is a workaround for
1763 code errors. See the description of the AcpiSetupGpeForWake interface in
1765 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
1767 Changed some comments and internal function names to simplify and ensure
1768 correctness of the Linux code translation. No functional changes.
1770 Example Code and Data Size: These are the sizes for the OS-independent
1771 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1773 version of the code includes the debug output trace mechanism and has a
1775 larger code and data size.
1778 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1779 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1781 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1782 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1785 2) iASL Compiler/Disassembler and Tools:
1787 Disassembler: Added support to emit short, commented descriptions for the
1789 predefined names in order to improve the readability of the disassembled
1790 output. ACPICA BZ 959. Changes include:
1791 1) Emit descriptions for all standard predefined names (_INI, _STA,
1794 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
1795 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
1798 AcpiSrc: Fixed several long-standing Linux code translation issues.
1800 descriptions in function headers are now translated properly to lower
1803 underscores. ACPICA BZ 961. Also fixes translation problems such as
1809 local_fADT -> local_FADT
1810 execute_oSI -> execute_OSI
1812 iASL: Fixed a problem where null bytes were inadvertently emitted into
1816 iASL: Added the existing debug options to the standard help screen. There
1818 no longer two different help screens. ACPICA BZ 957.
1820 AcpiHelp: Fixed some typos in the various predefined name descriptions.
1822 expand some of the descriptions where appropriate.
1824 iASL: Fixed the -ot option (display compile times/statistics). Was not
1826 properly for standard output; only worked for the debug file case.
1828 ----------------------------------------
1829 18 May 2012. Summary of changes for version 20120518:
1832 1) ACPICA Core Subsystem:
1834 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
1836 to block until asynchronous events such as notifies and GPEs have
1838 Within ACPICA, it is only called before a notify or GPE handler is
1839 removed/uninstalled. It also may be useful for the host OS within related
1840 drivers such as the Embedded Controller driver. See the ACPICA reference
1842 additional information. ACPICA BZ 868.
1844 ACPI Tables: Added a new error message for a possible overflow failure
1846 the conversion of FADT 32-bit legacy register addresses to internal
1849 bit GAS structure representation. The GAS has a one-byte "bit length"
1851 thus limiting the register length to 255 bits. ACPICA BZ 953.
1853 Example Code and Data Size: These are the sizes for the OS-independent
1854 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1856 version of the code includes the debug output trace mechanism and has a
1858 larger code and data size.
1861 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1862 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1864 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1865 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1868 2) iASL Compiler/Disassembler and Tools:
1870 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
1872 This keyword was added late in the ACPI 5.0 release cycle and was not
1873 implemented until now.
1875 Disassembler: Added support for Operation Region externals. Adds missing
1876 support for operation regions that are defined in another table, and
1877 referenced locally via a Field or BankField ASL operator. Now generates
1879 correct External statement.
1881 Disassembler: Several additional fixes for the External() statement
1883 related to some ASL operators. Also, order the External() statements
1884 alphabetically in the disassembler output. Fixes the External()
1887 the Create* field, Alias, and Scope operators:
1888 1) Create* buffer field operators - fix type mismatch warning on
1890 2) Alias - implement missing External support
1891 3) Scope - fix to make sure all necessary externals are emitted.
1893 iASL: Improved pathname support. For include files, merge the prefix
1895 with the file pathname and eliminate unnecessary components. Convert
1896 backslashes in all pathnames to forward slashes, for readability. Include
1898 pathname changes affect both #include and Include() type operators.
1900 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
1902 of a valid line by inserting a newline and then returning the EOF during
1904 next call to GetNextLine. Prevents the line from being ignored due to EOF
1907 iASL: Implemented some changes to enhance the IDE support (-vi option.)
1909 and Warning messages are now correctly recognized for both the source
1911 browser and the global error and warning counts.
1913 ----------------------------------------
1914 20 April 2012. Summary of changes for version 20120420:
1917 1) ACPICA Core Subsystem:
1919 Implemented support for multiple notify handlers. This change adds
1922 allow multiple system and device notify handlers on Device, Thermal Zone,
1924 Processor objects. This can simplify the host OS notification
1926 Also re-worked and restructured the entire notify support code to
1928 handler installation, handler removal, notify event queuing, and notify
1929 dispatch to handler(s). Note: there can still only be two global notify
1930 handlers - one for system notifies and one for device notifies. There are
1932 changes to the existing handler install/remove interfaces. Lin Ming, Bob
1933 Moore, Rafael Wysocki.
1935 Fixed a regression in the package repair code where the object reference
1936 count was calculated incorrectly. Regression was introduced in the commit
1937 "Support to add Package wrappers".
1939 Fixed a couple possible memory leaks in the AML parser, in the error
1941 path. Jesper Juhl, Lin Ming.
1943 Example Code and Data Size: These are the sizes for the OS-independent
1944 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1945 debug version of the code includes the debug output trace mechanism and
1947 much larger code and data size.
1950 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1951 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
1953 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1954 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1957 2) iASL Compiler/Disassembler and Tools:
1959 iASL: Fixed a problem with the resource descriptor support where the
1961 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
1962 included in cumulative descriptor offset, resulting in incorrect values
1964 resource tags within resource descriptors appearing after a
1966 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
1968 iASL and Preprocessor: Implemented full support for the #line directive
1970 correctly track original source file line numbers through the .i
1972 output file - for error and warning messages.
1974 iASL: Expand the allowable byte constants for address space IDs.
1976 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
1977 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
1979 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
1981 iASL: Add option to completely disable the preprocessor (-Pn).
1983 iASL: Now emit all error/warning messages to standard error (stderr) by
1984 default (instead of the previous stdout).
1986 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
1988 for resource descriptor offset fix above. Update/cleanup error output
1989 routines. Enable and send iASL errors/warnings to an error logfile
1990 (error.txt). Send all other iASL output to a logfile (compiler.txt).
1992 several extraneous "unrecognized operator" messages.
1994 ----------------------------------------
1995 20 March 2012. Summary of changes for version 20120320:
1998 1) ACPICA Core Subsystem:
2000 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2001 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2003 does not execute these methods, and therefore these methods are often
2004 untested. It has been seen on some systems where the execution of these
2005 methods causes errors and also prevents the machine from entering S5. It
2007 therefore suggested that host operating systems do not execute these
2009 by default. In the future, perhaps these methods can be optionally
2011 based on the age of the system and/or what is the newest version of
2013 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2015 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2018 Fixed a problem where the length of the local/common FADT was set too
2020 The local FADT table length cannot be set to the common length until the
2021 original length has been examined. There is code that checks the table
2023 and sets various fields appropriately. This can affect older machines
2025 early FADT versions. For example, this can cause inadvertent writes to
2027 CST_CNT register. Julian Anastasov.
2029 Fixed a mapping issue related to a physical table override. Use the
2031 mapping mechanism for tables loaded via the physical override OSL
2033 This allows for early mapping before the virtual memory manager is
2035 Thomas Renninger, Bob Moore.
2037 Enhanced the automatic return-object repair code: Repair a common problem
2039 predefined methods that are defined to return a variable-length Package
2041 sub-objects. If there is only one sub-object, some BIOS ASL code
2043 simply returns the single object instead of a Package with one sub-
2045 This new support will repair this error by wrapping a Package object
2047 the original object, creating the correct and expected Package with one
2049 object. Names that can be repaired in this manner include: _ALR, _CSD,
2051 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2054 Changed the exception code returned for invalid ACPI paths passed as
2055 parameters to external interfaces such as AcpiEvaluateObject. Was
2056 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2058 Example Code and Data Size: These are the sizes for the OS-independent
2059 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2061 version of the code includes the debug output trace mechanism and has a
2063 larger code and data size.
2066 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2067 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2069 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2070 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2073 2) iASL Compiler/Disassembler and Tools:
2075 iASL: Added the infrastructure and initial implementation of a integrated
2077 like preprocessor. This will simplify BIOS development process by
2079 the need for a separate preprocessing step during builds. On Windows, it
2081 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2082 features including full #define() macro support are still under
2084 These preprocessor directives are supported:
2097 In addition, these new command line options are supported:
2098 -D <symbol> Define symbol for preprocessor use
2099 -li Create preprocessed output file (*.i)
2100 -P Preprocess only and create preprocessor output file (*.i)
2102 Table Compiler: Fixed a problem where the equals operator within an
2104 did not work properly.
2106 Updated iASL to use the current versions of Bison/Flex. Updated the
2108 project file to invoke these tools from the standard location. ACPICA BZ
2111 Flex for Windows: V2.5.4
2112 Bison for Windows: V2.4.1
2114 ----------------------------------------
2115 15 February 2012. Summary of changes for version 20120215:
2118 1) ACPICA Core Subsystem:
2120 There have been some major changes to the sleep/wake support code, as
2121 described below (a - e).
2123 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2124 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2125 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2127 time the _BFS method is called and the _WAK method is called. NOTE: all
2129 must update their wake/resume code or else sleep/wake will not work
2133 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2135 method. Some machines require that the GPEs are enabled before the _WAK
2137 is executed. Thomas Renninger.
2139 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2141 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2143 determine whether the system is rebooting or resuming. Matthew Garrett.
2145 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2147 match the ACPI specification requirement. Rafael Wysocki.
2149 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2150 registers within the V5 FADT. This support adds two new files:
2151 hardware/hwesleep.c implements the support for the new registers. Moved
2153 sleep/wake external interfaces to hardware/hwxfsleep.c.
2156 Added a new OSL interface for ACPI table overrides,
2157 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2158 table via a physical address, instead of the logical address required by
2159 AcpiOsTableOverride. This simplifies the host implementation. Initial
2160 implementation by Thomas Renninger. The ACPICA implementation creates a
2162 shared function for table overrides that attempts both a logical and a
2165 Expanded the OSL memory read/write interfaces to 64-bit data
2166 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2167 transfer support for GAS register structures passed to AcpiRead and
2170 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2172 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2174 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2176 10% of the code and 5% of the static data, and the following hardware
2178 features become unavailable:
2179 PM Event and Control registers
2180 SCI interrupt (and handler)
2182 General Purpose Events (GPEs)
2185 FACS table (Waking vectors and Global Lock)
2187 Updated the unix tarball directory structure to match the ACPICA git
2189 tree. This ensures that the generic unix makefiles work properly (in
2190 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2193 Updated the return value of the _REV predefined method to integer value 5
2195 reflect ACPI 5.0 support.
2197 Moved the external ACPI PM timer interface prototypes to the public
2199 file where they belong.
2201 Example Code and Data Size: These are the sizes for the OS-independent
2202 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2204 version of the code includes the debug output trace mechanism and has a
2206 larger code and data size.
2209 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2210 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2212 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2213 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2216 2) iASL Compiler/Disassembler and Tools:
2218 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2219 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2220 incorrectly displayed.
2222 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2225 ----------------------------------------
2226 11 January 2012. Summary of changes for version 20120111:
2229 1) ACPICA Core Subsystem:
2231 Implemented a new mechanism to allow host device drivers to check for
2233 range conflicts with ACPI Operation Regions. Both SystemMemory and
2235 address spaces are supported. A new external interface,
2236 AcpiCheckAddressRange,
2237 allows drivers to check an address range against the ACPI namespace. See
2239 ACPICA reference for additional details. Adds one new file,
2240 utilities/utaddress.c. Lin Ming, Bob Moore.
2242 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2245 Status registers, update the ACPI 5.0 flags, and update internal data
2246 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2250 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2252 all module headers and signons, including the standard Linux header. This
2253 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2255 all ACPICA utilities.
2257 Example Code and Data Size: These are the sizes for the OS-independent
2258 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2260 version of the code includes the debug output trace mechanism and has a
2262 larger code and data size.
2265 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2266 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2268 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2269 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2272 2) iASL Compiler/Disassembler and Tools:
2274 Disassembler: fixed a problem with the automatic resource tag generation
2275 support. Fixes a problem where the resource tags are inadvertently not
2276 constructed if the table being disassembled contains external references
2278 control methods. Moved the actual construction of the tags to after the
2280 namespace is constructed (after 2nd parse is invoked due to external
2282 method references.) ACPICA BZ 941.
2284 Table Compiler: Make all "generic" operators caseless. These are the
2286 like UINT8, String, etc. Making these caseless improves ease-of-use.
2290 ----------------------------------------
2291 23 November 2011. Summary of changes for version 20111123:
2293 0) ACPI 5.0 Support:
2295 This release contains full support for the ACPI 5.0 specification, as
2298 Reduced Hardware Support:
2299 -------------------------
2301 This support allows for ACPI systems without the usual ACPI hardware.
2303 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2305 not attempt to initialize or use any of the usual ACPI hardware. Note,
2307 this flag is set, all of the following ACPI hardware is assumed to be not
2308 present and is not initialized or accessed:
2310 General Purpose Events (GPEs)
2311 Fixed Events (PM1a/PM1b and PM Control)
2312 Power Management Timer and Console Buttons (power/sleep)
2313 Real-time Clock Alarm
2315 System Control Interrupt (SCI)
2316 The FACS is assumed to be non-existent
2321 All new tables and updates to existing tables are fully supported in the
2322 ACPICA headers (for use by device drivers), the disassembler, and the
2324 Data Table Compiler. ACPI 5.0 defines these new tables:
2326 BGRT /* Boot Graphics Resource Table */
2327 DRTM /* Dynamic Root of Trust for Measurement table */
2328 FPDT /* Firmware Performance Data Table */
2329 GTDT /* Generic Timer Description Table */
2330 MPST /* Memory Power State Table */
2331 PCCT /* Platform Communications Channel Table */
2332 PMTT /* Platform Memory Topology Table */
2333 RASF /* RAS Feature table */
2335 Operation Regions/SpaceIDs:
2336 ---------------------------
2338 All new operation regions are fully supported by the iASL compiler, the
2339 disassembler, and the ACPICA runtime code (for dispatch to region
2341 The new operation region Space IDs are:
2346 Resource Descriptors:
2347 ---------------------
2349 All new ASL resource descriptors are fully supported by the iASL
2352 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2354 all new predefined resource tags). New descriptors are:
2363 ASL/AML Operators, New and Modified:
2364 ------------------------------------
2366 One new operator is added, the Connection operator, which is used to
2368 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2370 field objects within an operation region. Several new protocols are
2372 with the AccessAs operator. All are fully supported by the iASL compiler,
2373 disassembler, and runtime ACPICA AML interpreter:
2375 Connection // Declare Field Connection
2377 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2378 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2380 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2381 RawDataBuffer // Data type for Vendor Data
2384 Predefined ASL/AML Objects:
2385 ---------------------------
2387 All new predefined objects/control-methods are supported by the iASL
2389 and the ACPICA runtime validation/repair (arguments and return values.)
2391 predefined names include the following:
2393 Standard Predefined Names (Objects or Control Methods):
2394 _AEI, _CLS, _CPC, _CWS, _DEP,
2395 _DLM, _EVT, _GCP, _CRT, _GWS,
2396 _HRV, _PRE, _PSE, _SRT, _SUB.
2398 Resource Tags (Names used to access individual fields within resource
2400 _DBT, _DPL, _DRS, _END, _FLC,
2401 _IOR, _LIN, _MOD, _PAR, _PHA,
2402 _PIN, _PPI, _POL, _RXL, _SLV,
2403 _SPE, _STB, _TXL, _VEN.
2405 ACPICA External Interfaces:
2406 ---------------------------
2408 Several new interfaces have been defined for use by ACPI-related device
2409 drivers and other host OS services:
2411 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
2413 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
2414 provided by the BIOS. They are intended to be used in conjunction with
2416 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
2417 mutual exclusion with the AML code/interpreter.
2419 AcpiGetEventResources: Returns the (formatted) resource descriptors as
2421 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
2423 resource descriptors associated with hardware-reduced platform events,
2425 to the AcpiGetCurrentResources interface.
2427 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
2428 operation regions, information about the Connection() object and any
2430 length information is passed to the region handler within the Context
2433 AcpiBufferToResource: This interface converts a raw AML buffer containing
2435 resource template or resource descriptor to the ACPI_RESOURCE internal
2437 suitable for use by device drivers. Can be used by an operation region
2439 to convert the Connection() buffer object into a ACPI_RESOURCE.
2441 Miscellaneous/Tools/TestSuites:
2442 -------------------------------
2444 Support for extended _HID names (Four alpha characters instead of three).
2445 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
2446 Support for ACPI 5.0 features in the ASLTS test suite.
2447 Fully updated documentation (ACPICA and iASL reference documents.)
2449 ACPI Table Definition Language:
2450 -------------------------------
2452 Support for this language was implemented and released as a subsystem of
2454 iASL compiler in 2010. (See the iASL compiler User Guide.)
2457 Non-ACPI 5.0 changes for this release:
2458 --------------------------------------
2460 1) ACPICA Core Subsystem:
2462 Fix a problem with operation region declarations where a failure can
2465 the region name and an argument that evaluates to an object (such as the
2466 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
2469 Do not abort an ACPI table load if an invalid space ID is found within.
2471 will be caught later if the offending method is executed. ACPICA BZ 925.
2473 Fixed an issue with the FFixedHW space ID where the ID was not always
2474 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
2476 Fixed a problem with the 32-bit generation of the unix-specific OSL
2477 (osunixxf.c). Lin Ming, ACPICA BZ 936.
2479 Several changes made to enable generation with the GCC 4.6 compiler.
2483 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
2485 field registers out-of-range.
2487 2) iASL Compiler/Disassembler and Tools:
2489 iASL: Implemented the __PATH__ operator, which returns the full pathname
2491 the current source file.
2493 AcpiHelp: Automatically display expanded keyword information for all ASL
2496 Debugger: Add "Template" command to disassemble/dump resource template
2499 Added a new master script to generate and execute the ASLTS test suite.
2500 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
2502 iASL: Fix problem with listing generation during processing of the
2504 operator where AML listing was disabled until the entire Switch block was
2507 iASL: Improve support for semicolon statement terminators. Fix "invalid
2508 character" message for some cases when the semicolon is used. Semicolons
2510 now allowed after every <Term> grammar element. ACPICA BZ 927.
2512 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
2515 Disassembler: Fix problem with disassembly of the DataTableRegion
2517 where an inadvertent "Unhandled deferred opcode" message could be
2520 3) Example Code and Data Size
2522 These are the sizes for the OS-independent acpica.lib produced by the
2523 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2524 includes the debug output trace mechanism and has a much larger code and
2529 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2530 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2532 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2533 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2535 ----------------------------------------
2536 22 September 2011. Summary of changes for version 20110922:
2540 Support for ACPI 5.0 in ACPICA has been underway for several months and
2542 be released at the same time that ACPI 5.0 is officially released.
2544 The ACPI 5.0 specification is on track for release in the next few
2547 1) ACPICA Core Subsystem:
2549 Fixed a problem where the maximum sleep time for the Sleep() operator was
2550 intended to be limited to two seconds, but was inadvertently limited to
2554 Linux and Unix makefiles: Added header file dependencies to ensure
2556 generation of ACPICA core code and utilities. Also simplified the
2558 considerably through the use of the vpath variable to specify search
2562 2) iASL Compiler/Disassembler and Tools:
2564 iASL: Implemented support to check the access length for all fields
2566 access named Resource Descriptor fields. For example, if a resource field
2568 defined to be two bits, a warning is issued if a CreateXxxxField() is
2570 with an incorrect bit length. This is implemented for all current
2572 descriptor names. ACPICA BZ 930.
2574 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
2578 iASL: Fixed a couple of issues associated with variable-length package
2579 objects. 1) properly handle constants like One, Ones, Zero -- do not make
2581 VAR_PACKAGE when these are used as a package length. 2) Allow the
2583 opcode (in addition to PACKAGE) when validating object types for
2587 iASL: Emit statistics for all output files (instead of just the ASL input
2589 AML output). Includes listings, hex files, etc.
2591 iASL: Added -G option to the table compiler to allow the compilation of
2593 ACPI tables. The only part of a table that is required is the standard
2598 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
2600 which also adds correct 64-bit support. Also, now all output filenames
2602 completely lower case.
2604 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
2605 loading table files. A warning is issued for any such tables. The only
2606 exception is an FADT. This also fixes a possible fault when attempting to
2608 non-AML tables. ACPICA BZ 932.
2610 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
2612 missing table terminator could cause a fault when using the -p option.
2614 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
2617 3) Example Code and Data Size
2619 These are the sizes for the OS-independent acpica.lib produced by the
2620 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2621 includes the debug output trace mechanism and has a much larger code and
2625 Previous Release (VC 9.0):
2626 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2627 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2628 Current Release (VC 9.0):
2629 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2630 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2633 ----------------------------------------
2634 23 June 2011. Summary of changes for version 20110623:
2636 1) ACPI CA Core Subsystem:
2638 Updated the predefined name repair mechanism to not attempt repair of a
2640 return object if a _PSS object is present. We can only sort the _TSS
2642 package if there is no _PSS within the same scope. This is because if
2645 present, the ACPI specification dictates that the _TSS Power Dissipation
2647 is to be ignored, and therefore some BIOSs leave garbage values in the
2649 Power field(s). In this case, it is best to just return the _TSS package
2651 is. Reported by, and fixed with assistance from Fenghua Yu.
2653 Added an option to globally disable the control method return value
2655 and repair. This runtime option can be used to disable return value
2658 this is causing a problem on a particular machine. Also added an option
2660 AcpiExec (-dr) to set this disable flag.
2662 All makefiles and project files: Major changes to improve generation of
2664 tools. ACPICA BZ 912:
2665 Reduce default optimization levels to improve compatibility
2666 For Linux, add strict-aliasing=0 for gcc 4
2667 Cleanup and simplify use of command line defines
2668 Cleanup multithread library support
2669 Improve usage messages
2671 Linux-specific header: update handling of THREAD_ID and pthread. For the
2673 bit case, improve casting to eliminate possible warnings, especially with
2677 Example Code and Data Size: These are the sizes for the OS-independent
2678 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2680 version of the code includes the debug output trace mechanism and has a
2682 larger code and data size.
2684 Previous Release (VC 9.0):
2685 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2686 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2687 Current Release (VC 9.0):
2688 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2689 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2691 2) iASL Compiler/Disassembler and Tools:
2693 With this release, a new utility named "acpihelp" has been added to the
2695 package. This utility summarizes the ACPI specification chapters for the
2697 and AML languages. It generates under Linux/Unix as well as Windows, and
2698 provides the following functionality:
2699 Find/display ASL operator(s) -- with description and syntax.
2700 Find/display ASL keyword(s) -- with exact spelling and descriptions.
2701 Find/display ACPI predefined name(s) -- with description, number
2702 of arguments, and the return value data type.
2703 Find/display AML opcode name(s) -- with opcode, arguments, and
2705 Decode/display AML opcode -- with opcode name, arguments, and
2708 Service Layers: Make multi-thread support configurable. Conditionally
2710 the multi-thread support so that threading libraries will not be linked
2713 necessary. The only tool that requires multi-thread support is AcpiExec.
2715 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
2717 Bison appear to want the interface to yyerror to be a const char * (or at
2718 least this is a problem when generating iASL on some systems.) ACPICA BZ
2722 Tools: Fix for systems where O_BINARY is not defined. Only used for
2724 versions of the tools.
2726 ----------------------------------------
2727 27 May 2011. Summary of changes for version 20110527:
2729 1) ACPI CA Core Subsystem:
2731 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
2733 signature. Now, only allow SSDT, OEMx, and a null signature. History:
2734 1) Originally, we checked the table signature for "SSDT" or "PSDT".
2735 (PSDT is now obsolete.)
2736 2) We added support for OEMx tables, signature "OEM" plus a fourth
2737 "don't care" character.
2738 3) Valid tables were encountered with a null signature, so we just
2739 gave up on validating the signature, (05/2008).
2740 4) We encountered non-AML tables such as the MADT, which caused
2741 interpreter errors and kernel faults. So now, we once again allow
2742 only SSDT, OEMx, and now, also a null signature. (05/2011).
2744 Added the missing _TDL predefined name to the global name list in order
2746 enable validation. Affects both the core ACPICA code and the iASL
2749 Example Code and Data Size: These are the sizes for the OS-independent
2750 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2752 version of the code includes the debug output trace mechanism and has a
2754 larger code and data size.
2756 Previous Release (VC 9.0):
2757 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2758 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2759 Current Release (VC 9.0):
2760 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2761 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2763 2) iASL Compiler/Disassembler and Tools:
2765 Debugger/AcpiExec: Implemented support for "complex" method arguments on
2767 debugger command line. This adds support beyond simple integers --
2769 Strings, Buffers, and Packages. Includes support for nested packages.
2770 Increased the default command line buffer size to accommodate these
2772 See the ACPICA reference for details and syntax. ACPICA BZ 917.
2774 Debugger/AcpiExec: Implemented support for "default" method arguments for
2776 Execute/Debug command. Now, the debugger will always invoke a control
2778 with the required number of arguments -- even if the command line
2780 none or insufficient arguments. It uses default integer values for any
2782 arguments. Also fixes a bug where only six method arguments maximum were
2783 supported instead of the required seven.
2785 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
2787 also return status in order to prevent buffer overruns. See the ACPICA
2788 reference for details and syntax. ACPICA BZ 921
2790 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
2791 makefiles to simplify support for the two different but similar parser
2792 generators, bison and yacc.
2794 Updated the generic unix makefile for gcc 4. The default gcc version is
2796 expected to be 4 or greater, since options specific to gcc 4 are used.
2798 ----------------------------------------
2799 13 April 2011. Summary of changes for version 20110413:
2801 1) ACPI CA Core Subsystem:
2803 Implemented support to execute a so-called "orphan" _REG method under the
2805 device. This change will force the execution of a _REG method underneath
2808 device even if there is no corresponding operation region of type
2809 EmbeddedControl. Fixes a problem seen on some machines and apparently is
2810 compatible with Windows behavior. ACPICA BZ 875.
2812 Added more predefined methods that are eligible for automatic NULL
2814 element removal. This change adds another group of predefined names to
2817 of names that can be repaired by having NULL package elements dynamically
2818 removed. This group are those methods that return a single variable-
2820 package containing simple data types such as integers, buffers, strings.
2822 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
2825 and _TZD. ACPICA BZ 914.
2827 Split and segregated all internal global lock functions to a new file,
2830 Updated internal address SpaceID for DataTable regions. Moved this
2833 id in preparation for ACPI 5.0 changes that will include some new space
2836 change should not affect user/host code.
2838 Example Code and Data Size: These are the sizes for the OS-independent
2840 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2842 the code includes the debug output trace mechanism and has a much larger
2847 Previous Release (VC 9.0):
2848 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2849 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2850 Current Release (VC 9.0):
2851 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2852 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2854 2) iASL Compiler/Disassembler and Tools:
2856 iASL/DTC: Major update for new grammar features. Allow generic data types
2858 custom ACPI tables. Field names are now optional. Any line can be split
2860 multiple lines using the continuation char (\). Large buffers now use
2862 continuation character(s) and no colon on the continuation lines. See the
2864 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
2867 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
2869 Since the parser stuffs a "zero" as the return value for these statements
2872 the underlying AML grammar), they were seen as "return with value" by the
2874 semantic checking. They are now seen correctly as "null" return
2877 iASL: Check if a_REG declaration has a corresponding Operation Region.
2879 check for each _REG to ensure that there is in fact a corresponding
2881 region declaration in the same scope. If not, the _REG method is not very
2883 since it probably won't be executed. ACPICA BZ 915.
2885 iASL/DTC: Finish support for expression evaluation. Added a new
2888 that implements c-style operator precedence and parenthesization. ACPICA
2892 Disassembler/DTC: Remove support for () and <> style comments in data
2895 that DTC has full expression support, we don't want to have comment
2898 start with a parentheses or a less-than symbol. Now, only the standard /*
2901 comments are supported, as well as the bracket [] comments.
2903 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
2905 headers in the acpidump file. Update the header validation to support
2907 tables. Problem introduced in previous AcpiXtract version in the change
2909 support "wrong checksum" error messages emitted by acpidump utility.
2911 iASL: Add a * option to generate all template files (as a synonym for
2915 "iasl -T *" or "iasl -T ALL".
2917 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
2919 abort the compiler on "fatal" errors, simply should abort the current
2921 This allows multiple compiles with a single (possibly wildcard) compiler
2924 ----------------------------------------
2925 16 March 2011. Summary of changes for version 20110316:
2927 1) ACPI CA Core Subsystem:
2929 Fixed a problem caused by a _PRW method appearing at the namespace root
2931 during the setup of wake GPEs. A fault could occur if a _PRW directly
2934 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
2936 Implemented support for "spurious" Global Lock interrupts. On some
2938 global lock interrupt can occur without the pending flag being set. Upon
2941 interrupt, we now ensure that a thread is actually waiting for the lock
2943 signaling GL availability. Rafael Wysocki, Bob Moore.
2945 Example Code and Data Size: These are the sizes for the OS-independent
2947 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2949 the code includes the debug output trace mechanism and has a much larger
2954 Previous Release (VC 9.0):
2955 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
2956 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
2957 Current Release (VC 9.0):
2958 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2959 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2961 2) iASL Compiler/Disassembler and Tools:
2963 Implemented full support for the "SLIC" ACPI table. Includes support in
2965 header files, disassembler, table compiler, and template generator. Bob
2969 AcpiXtract: Correctly handle embedded comments and messages from
2971 Apparently some or all versions of acpidump will occasionally emit a
2974 "Wrong checksum", etc., into the dump file. This was causing problems for
2975 AcpiXtract. ACPICA BZ 905.
2977 iASL: Fix the Linux makefile by removing an inadvertent double file
2981 AcpiExec: Update installation of operation region handlers. Install one
2983 for a user-defined address space. This is used by the ASL test suite
2986 ----------------------------------------
2987 11 February 2011. Summary of changes for version 20110211:
2989 1) ACPI CA Core Subsystem:
2991 Added a mechanism to defer _REG methods for some early-installed
2993 Most user handlers should be installed before call to
2994 AcpiEnableSubsystem.
2995 However, Event handlers and region handlers should be installed after
2996 AcpiInitializeObjects. Override handlers for the "default" regions should
2998 installed early, however. This change executes all _REG methods for the
2999 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3000 chicken/egg issues between them. ACPICA BZ 848.
3002 Implemented an optimization for GPE detection. This optimization will
3004 ignore GPE registers that contain no enabled GPEs -- there is no need to
3005 read the register since this information is available internally. This
3006 becomes more important on machines with a large GPE space. ACPICA
3008 884. Lin Ming. Suggestion from Joe Liu.
3010 Removed all use of the highly unreliable FADT revision field. The
3012 number in the FADT has been found to be completely unreliable and cannot
3014 trusted. Only the actual table length can be used to infer the version.
3016 change updates the ACPICA core and the disassembler so that both no
3018 even look at the FADT version and instead depend solely upon the FADT
3021 Fix an unresolved name issue for the no-debug and no-error-message source
3022 generation cases. The _AcpiModuleName was left undefined in these cases,
3024 it is actually needed as a parameter to some interfaces. Define
3025 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3027 Split several large files (makefiles and project files updated)
3028 utglobal.c -> utdecode.c
3029 dbcomds.c -> dbmethod.c dbnames.c
3030 dsopcode.c -> dsargs.c dscontrol.c
3031 dsload.c -> dsload2.c
3032 aslanalyze.c -> aslbtypes.c aslwalks.c
3034 Example Code and Data Size: These are the sizes for the OS-independent
3035 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3036 debug version of the code includes the debug output trace mechanism and
3038 a much larger code and data size.
3040 Previous Release (VC 9.0):
3041 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3042 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3043 Current Release (VC 9.0):
3044 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3045 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3047 2) iASL Compiler/Disassembler and Tools:
3049 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3050 These are useful C-style macros with the standard definitions. ACPICA
3053 iASL/DTC: Added support for integer expressions and labels. Support for
3055 expressions for all integer fields in all ACPI tables. Support for labels
3057 "generic" portions of tables such as UEFI. See the iASL reference manual.
3059 Debugger: Added a command to display the status of global handlers. The
3060 "handlers" command will display op region, fixed event, and miscellaneous
3061 global handlers. installation status -- and for op regions, whether
3063 or user-installed handler will be used.
3065 iASL: Warn if reserved method incorrectly returns a value. Many
3067 names are defined such that they do not return a value. If implemented as
3069 method, issue a warning if such a name explicitly returns a value. ACPICA
3072 iASL: Added detection of GPE method name conflicts. Detects a conflict
3074 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3076 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3078 iASL/DTC: Fixed a couple input scanner issues with comments and line
3079 numbers. Comment remover could get confused and miss a comment ending.
3081 a problem with line counter maintenance.
3083 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3085 no need to abort on simple errors within a field definition.
3087 Debugger: Simplified the output of the help command. All help output now
3089 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3091 ----------------------------------------
3092 12 January 2011. Summary of changes for version 20110112:
3094 1) ACPI CA Core Subsystem:
3096 Fixed a race condition between method execution and namespace walks that
3098 possibly cause a fault. The problem was apparently introduced in version
3099 20100528 as a result of a performance optimization that reduces the
3102 namespace walks upon method exit by using the delete_namespace_subtree
3103 function instead of the delete_namespace_by_owner function used
3105 Bug is a missing namespace lock in the delete_namespace_subtree function.
3106 dana.myers@oracle.com
3108 Fixed several issues and a possible fault with the automatic "serialized"
3109 method support. History: This support changes a method to "serialized" on
3111 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3112 possibility that it cannot handle reentrancy. This fix repairs a couple
3114 issues seen in the field, especially on machines with many cores:
3116 1) Delete method children only upon the exit of the last thread,
3117 so as to not delete objects out from under other running threads
3118 (and possibly causing a fault.)
3119 2) Set the "serialized" bit for the method only upon the exit of the
3120 Last thread, so as to not cause deadlock when running threads
3122 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3123 so that there is no longer any confusion between the two.
3125 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3127 Debugger: Now lock the namespace for duration of a namespace dump.
3129 issues if the namespace is changing dynamically underneath the debugger.
3130 Especially affects temporary namespace nodes, since the debugger displays
3133 Updated the ordering of include files. The ACPICA headers should appear
3134 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3136 any necessary compiler-specific defines, etc. Affects the ACPI-related
3140 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3142 to all module headers and signons, including the Linux header. This
3144 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3147 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3148 project files for VC++ 6.0 are now obsolete. New project files can be
3150 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3153 Example Code and Data Size: These are the sizes for the OS-independent
3154 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3155 debug version of the code includes the debug output trace mechanism and
3157 much larger code and data size.
3159 Previous Release (VC 6.0):
3160 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3161 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3162 Current Release (VC 9.0):
3163 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3164 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3166 2) iASL Compiler/Disassembler and Tools:
3168 iASL: Added generic data types to the Data Table compiler. Add "generic"
3170 types such as UINT32, String, Unicode, etc., to simplify the generation
3172 platform-defined tables such as UEFI. Lin Ming.
3174 iASL: Added listing support for the Data Table Compiler. Adds listing
3176 (-l) to display actual binary output for each line of input code.
3178 ----------------------------------------
3179 09 December 2010. Summary of changes for version 20101209:
3181 1) ACPI CA Core Subsystem:
3183 Completed the major overhaul of the GPE support code that was begun in
3185 2010. Major features include: removal of _PRW execution in ACPICA (host
3186 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3187 changes to existing interfaces, simplification of GPE handler operation,
3189 a handful of new interfaces:
3195 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3197 See the ACPICA Programmer Reference for full details and programming
3198 information. See the new section 4.4 "General Purpose Event (GPE)
3200 for a full overview, and section 8.7 "ACPI General Purpose Event
3202 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3204 Bob Moore, Rafael Wysocki.
3206 Implemented a new GPE feature for Windows compatibility, the "Implicit
3208 GPE Notify". This feature will automatically issue a Notify(2) on a
3210 when a Wake GPE is received if there is no corresponding GPE method or
3211 handler. ACPICA BZ 870.
3213 Fixed a problem with the Scope() operator during table parse and load
3215 During load phase (table load or method execution), the scope operator
3217 not enter the target into the namespace. Instead, it should open a new
3219 at the target location. Linux BZ 19462, ACPICA BZ 882.
3221 Example Code and Data Size: These are the sizes for the OS-independent
3222 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3223 debug version of the code includes the debug output trace mechanism and
3225 much larger code and data size.
3228 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3229 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3231 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3232 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3234 2) iASL Compiler/Disassembler and Tools:
3236 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3238 "bus-specific" per the ACPI specification, and therefore any characters
3240 acceptable. The only checks that can be performed are for a null string
3242 perhaps for a leading asterisk. ACPICA BZ 886.
3244 iASL: Fixed a problem where a syntax error that caused a premature EOF
3245 condition on the source file emitted a very confusing error message. The
3246 premature EOF is now detected correctly. ACPICA BZ 891.
3248 Disassembler: Decode the AccessSize within a Generic Address Structure
3250 access, word access, etc.) Note, this field does not allow arbitrary bit
3251 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3253 New: AcpiNames utility - Example namespace dump utility. Shows an example
3255 ACPICA configuration for a minimal namespace dump utility. Uses table and
3256 namespace managers, but no AML interpreter. Does not add any
3258 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3259 partition and configure ACPICA. ACPICA BZ 883.
3261 AML Debugger: Increased the debugger buffer size for method return
3263 Was 4K, increased to 16K. Also enhanced error messages for debugger
3265 execution, including the buffer overflow case.
3267 ----------------------------------------
3268 13 October 2010. Summary of changes for version 20101013:
3270 1) ACPI CA Core Subsystem:
3272 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3274 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3275 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3277 Changed the type of the predefined namespace object _TZ from ThermalZone
3279 Device. This was found to be confusing to the host software that
3281 the various thermal zones, since _TZ is not really a ThermalZone.
3284 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3287 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3288 string is "Windows 2006 SP2".
3290 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3292 code automatically repairs _HID-related strings, this type of code is no
3293 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3296 Example Code and Data Size: These are the sizes for the OS-independent
3297 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3298 debug version of the code includes the debug output trace mechanism and
3300 much larger code and data size.
3303 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3304 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3306 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3307 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3309 2) iASL Compiler/Disassembler and Tools:
3311 iASL: Implemented additional compile-time validation for _HID strings.
3313 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3316 the string must be exactly seven or eight characters. For both _HID and
3318 strings, all characters must be alphanumeric. ACPICA BZ 874.
3320 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3321 descriptors that are mostly or all zeros, with the expectation that they
3323 be filled in at runtime. iASL now allows this as long as there is a
3325 tag" (name) associated with the descriptor, which gives the ASL a handle
3326 needed to modify the descriptor. ACPICA BZ 873.
3328 Added single-thread support to the generic Unix application OSL.
3330 for iASL support, this change removes the use of semaphores in the
3332 threaded ACPICA tools/applications - increasing performance. The
3333 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3334 option. ACPICA BZ 879.
3336 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3338 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3340 iASL: Moved all compiler messages to a new file, aslmessages.h.
3342 ----------------------------------------
3343 15 September 2010. Summary of changes for version 20100915:
3345 1) ACPI CA Core Subsystem:
3347 Removed the AcpiOsDerivePciId OSL interface. The various host
3349 of this function were not OS-dependent and are now obsolete and can be
3350 removed from all host OSLs. This function has been replaced by
3351 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3352 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3353 module, hwpci.c. ACPICA BZ 857.
3355 Implemented a dynamic repair for _HID and _CID strings. The following
3356 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3357 string, and 2) the entire string is uppercased. Both repairs are in
3358 accordance with the ACPI specification and will simplify host driver
3362 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3363 always UINT64. This simplifies the ACPICA code, especially any printf
3365 UINT64 is the only common data type for all thread_id types across all
3366 operating systems. It is now up to the host OSL to cast the native
3368 type to UINT64 before returning the value to ACPICA (via
3370 Lin Ming, Bob Moore.
3372 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3374 keyword is not standard across compilers, and this type allows inline to
3376 configured on a per-compiler basis. Lin Ming.
3378 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3380 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3382 during suspend/restore operations. ACPICA BZ 869.
3384 All code that implements error/warning messages with the "ACPI:" prefix
3386 been moved to a new module, utxferror.c.
3388 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
3390 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
3392 Example Code and Data Size: These are the sizes for the OS-independent
3393 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3394 debug version of the code includes the debug output trace mechanism and
3396 much larger code and data size.
3399 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3400 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3402 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3403 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3405 2) iASL Compiler/Disassembler and Tools:
3407 iASL/Disassembler: Write ACPI errors to stderr instead of the output
3409 This keeps the output files free of random error messages that may
3411 from within the namespace/interpreter code. Used this opportunity to
3413 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
3414 866. Lin Ming, Bob Moore.
3416 Tools: update some printfs for ansi warnings on size_t. Handle width
3418 of size_t on 32-bit versus 64-bit generations. Lin Ming.
3420 ----------------------------------------
3421 06 August 2010. Summary of changes for version 20100806:
3423 1) ACPI CA Core Subsystem:
3425 Designed and implemented a new host interface to the _OSI support code.
3427 will allow the host to dynamically add or remove multiple _OSI strings,
3429 well as install an optional handler that is called for each _OSI
3431 Also added a new AML debugger command, 'osi' to display and modify the
3433 _OSI string table, and test support in the AcpiExec utility. See the
3435 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
3437 AcpiInstallInterface - Add an _OSI string.
3438 AcpiRemoveInterface - Delete an _OSI string.
3439 AcpiInstallInterfaceHandler - Install optional _OSI handler.
3441 AcpiOsValidateInterface - no longer used.
3443 source/components/utilities/utosi.c
3445 Re-introduced the support to enable multi-byte transfers for Embedded
3446 Controller (EC) operation regions. A reported problem was found to be a
3448 in the host OS, not in the multi-byte support. Previously, the maximum
3450 size passed to the EC operation region handler was a single byte. There
3452 often EC Fields larger than one byte that need to be transferred, and it
3454 useful for the EC driver to lock these as a single transaction. This
3456 enables single transfers larger than 8 bits. This effectively changes the
3457 access to the EC space from ByteAcc to AnyAcc, and will probably require
3458 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
3460 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
3462 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
3463 prototype in acpiosxf.h had the output value pointer as a (void *).
3464 It should be a (UINT64 *). This may affect some host OSL code.
3466 Fixed a couple problems with the recently modified Linux makefiles for
3468 and AcpiExec. These new makefiles place the generated object files in the
3469 local directory so that there can be no collisions between the files that
3471 shared between them that are compiled with different options.
3473 Example Code and Data Size: These are the sizes for the OS-independent
3474 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3475 debug version of the code includes the debug output trace mechanism and
3477 much larger code and data size.
3480 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3481 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3483 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3484 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3486 2) iASL Compiler/Disassembler and Tools:
3488 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
3490 namespace from and disassemble an entire group of AML files. Useful for
3491 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
3493 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
3495 iASL: Allow multiple invocations of -e option. This change allows
3497 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
3501 ----------------------------------------
3502 02 July 2010. Summary of changes for version 20100702:
3504 1) ACPI CA Core Subsystem:
3506 Implemented several updates to the recently added GPE reference count
3507 support. The model for "wake" GPEs is changing to give the host OS
3509 control of these GPEs. Eventually, the ACPICA core will not execute any
3511 methods, since the host already must execute them. Also, additional
3513 were made to help ensure that the reference counts are kept in proper
3514 synchronization with reality. Rafael J. Wysocki.
3516 1) Ensure that GPEs are not enabled twice during initialization.
3517 2) Ensure that GPE enable masks stay in sync with the reference count.
3518 3) Do not inadvertently enable GPEs when writing GPE registers.
3519 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
3520 interface. This interface will set or clear individual GPEs for wakeup.
3521 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
3523 are now used for "runtime" GPEs only.
3525 Changed the behavior of the GPE install/remove handler interfaces. The
3528 no longer disabled during this process, as it was found to cause problems
3530 some machines. Rafael J. Wysocki.
3532 Reverted a change introduced in version 20100528 to enable Embedded
3533 Controller multi-byte transfers. This change was found to cause problems
3535 Index Fields and possibly Bank Fields. It will be reintroduced when these
3536 problems have been resolved.
3538 Fixed a problem with references to Alias objects within Package Objects.
3540 reference to an Alias within the definition of a Package was not always
3541 resolved properly. Aliases to objects like Processors, Thermal zones,
3543 were resolved to the actual object instead of a reference to the object
3546 should be. Package objects are only allowed to contain integer, string,
3547 buffer, package, and reference objects. Redhat bugzilla 608648.
3549 Example Code and Data Size: These are the sizes for the OS-independent
3550 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3551 debug version of the code includes the debug output trace mechanism and
3553 much larger code and data size.
3556 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3557 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3559 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3560 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3562 2) iASL Compiler/Disassembler and Tools:
3564 iASL: Implemented a new compiler subsystem to allow definition and
3565 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
3567 are called "ACPI Data Tables", and the new compiler is the "Data Table
3568 Compiler". This compiler is intended to simplify the existing error-prone
3569 process of creating these tables for the BIOS, as well as allowing the
3570 disassembly, modification, recompilation, and override of existing ACPI
3572 tables. See the iASL User Guide for detailed information.
3574 iASL: Implemented a new Template Generator option in support of the new
3576 Table Compiler. This option will create examples of all known ACPI tables
3577 that can be used as the basis for table development. See the iASL
3578 documentation and the -T option.
3580 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
3583 Updated the Linux makefiles for iASL and AcpiExec to place the generated
3584 object files in the local directory so that there can be no collisions
3585 between the shared files between them that are generated with different
3588 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
3590 the #define __APPLE__ to enable this support.
3592 ----------------------------------------
3593 28 May 2010. Summary of changes for version 20100528:
3595 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
3596 available at www.acpi.info. This is primarily an errata release.
3598 1) ACPI CA Core Subsystem:
3600 Undefined ACPI tables: We are looking for the definitions for the
3602 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
3604 Implemented support to enable multi-byte transfers for Embedded
3606 (EC) operation regions. Previously, the maximum data size passed to the
3608 operation region handler was a single byte. There are often EC Fields
3610 than one byte that need to be transferred, and it is useful for the EC
3612 to lock these as a single transaction. This change enables single
3614 larger than 8 bits. This effectively changes the access to the EC space
3616 ByteAcc to AnyAcc, and will probably require changes to the host OS
3618 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
3620 transfers. Alexey Starikovskiy, Lin Ming
3622 Implemented a performance enhancement for namespace search and access.
3624 change enhances the performance of namespace searches and walks by adding
3626 backpointer to the parent in each namespace node. On large namespaces,
3628 change can improve overall ACPI performance by up to 9X. Adding a pointer
3630 each namespace node increases the overall size of the internal namespace
3632 about 5%, since each namespace entry usually consists of both a namespace
3633 node and an ACPI operand object. However, this is the first growth of the
3634 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
3636 Implemented a performance optimization that reduces the number of
3638 walks. On control method exit, only walk the namespace if the method is
3640 to have created namespace objects outside of its local scope. Previously,
3642 entire namespace was traversed on each control method exit. This change
3644 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
3647 Added support to truncate I/O addresses to 16 bits for Windows
3649 Some ASL code has been seen in the field that inadvertently has bits set
3650 above bit 15. This feature is optional and is enabled if the BIOS
3652 any Windows OSI strings. It can also be enabled by the host OS. Matthew
3655 Added support to limit the maximum time for the ASL Sleep() operator. To
3656 prevent accidental deep sleeps, limit the maximum time that Sleep() will
3657 actually sleep. Configurable, the default maximum is two seconds. ACPICA
3660 Added run-time validation support for the _WDG and_WED Microsoft
3662 methods. These objects are defined by "Windows Instrumentation", and are
3664 part of the ACPI spec. ACPICA BZ 860.
3666 Expanded all statistic counters used during namespace and device
3667 initialization from 16 to 32 bits in order to support very large
3670 Replaced all instances of %d in printf format specifiers with %u since
3672 all integers in ACPICA are unsigned.
3674 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
3678 Example Code and Data Size: These are the sizes for the OS-independent
3679 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3680 debug version of the code includes the debug output trace mechanism and
3682 much larger code and data size.
3685 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3686 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3688 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3689 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3691 2) iASL Compiler/Disassembler and Tools:
3693 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
3694 methods. These objects are defined by "Windows Instrumentation", and are
3696 part of the ACPI spec. ACPICA BZ 860.
3698 AcpiExec: added option to disable the memory tracking mechanism. The -dt
3699 option will disable the tracking mechanism, which improves performance
3702 AcpiExec: Restructured the command line options into -d (disable) and -e
3705 ----------------------------------------
3706 28 April 2010. Summary of changes for version 20100428:
3708 1) ACPI CA Core Subsystem:
3710 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
3711 including FADT-based and GPE Block Devices, execute any _PRW methods in
3713 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
3714 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
3715 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
3716 Devices. Provides compatibility with other ACPI implementations. Two new
3717 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
3720 Fixed a regression introduced in version 20100331 within the table
3722 where initial table loading could fail. This was introduced in the fix
3724 AcpiReallocateRootTable. Also, renamed some of fields in the table
3726 data structures to clarify their meaning and use.
3728 Fixed a possible allocation overrun during internal object copy in
3729 AcpiUtCopySimpleObject. The original code did not correctly handle the
3731 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
3734 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
3735 possible access beyond end-of-allocation. Also, now fully validate
3737 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
3739 Example Code and Data Size: These are the sizes for the OS-independent
3740 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3741 debug version of the code includes the debug output trace mechanism and
3743 much larger code and data size.
3746 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3747 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3749 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3750 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3752 2) iASL Compiler/Disassembler and Tools:
3754 iASL: Implemented Min/Max/Len/Gran validation for address resource
3755 descriptors. This change implements validation for the address fields
3757 are common to all address-type resource descriptors. These checks are
3758 implemented: Checks for valid Min/Max, length within the Min/Max window,
3759 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
3761 table 6-40 in the ACPI 4.0a specification. Also split the large
3763 and aslrestype2.c files into five new files. ACPICA BZ 840.
3765 iASL: Added support for the _Wxx predefined names. This support was
3767 and these names were not recognized by the compiler as valid predefined
3768 names. ACPICA BZ 851.
3770 iASL: Added an error for all predefined names that are defined to return
3772 value and thus must be implemented as Control Methods. These include all
3774 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
3775 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
3777 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
3779 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
3781 dynamically loaded via the Load() operator. Also cleaned up output for
3784 ta and -tc options. ACPICA BZ 853.
3786 Tests: Added a new file with examples of extended iASL error checking.
3787 Demonstrates the advanced error checking ability of the iASL compiler.
3788 Available at tests/misc/badcode.asl.
3790 ----------------------------------------
3791 31 March 2010. Summary of changes for version 20100331:
3793 1) ACPI CA Core Subsystem:
3795 Completed a major update for the GPE support in order to improve support
3797 shared GPEs and to simplify both host OS and ACPICA code. Added a
3799 count mechanism to support shared GPEs that require multiple device
3801 Several external interfaces have changed. One external interface has been
3802 removed. One new external interface was added. Most of the GPE external
3803 interfaces now use the GPE spinlock instead of the events mutex (and the
3804 Flags parameter for many GPE interfaces has been removed.) See the
3806 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
3808 Wysocki. ACPICA BZ 831.
3811 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
3817 Implemented write support for DataTable operation regions. These regions
3819 defined via the DataTableRegion() operator. Previously, only read support
3821 implemented. The ACPI specification allows DataTableRegions to be
3825 Implemented a new subsystem option to force a copy of the DSDT to local
3826 memory. Optionally copy the entire DSDT to local memory (instead of
3828 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
3830 the original DSDT, creating the need for this option. Default is FALSE,
3834 Implemented detection of a corrupted or replaced DSDT. This change adds
3835 support to detect a DSDT that has been corrupted and/or replaced from
3837 the OS (by firmware). This is typically catastrophic for the system, but
3839 been seen on some machines. Once this problem has been detected, the DSDT
3840 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
3842 Fixed two problems with AcpiReallocateRootTable during the root table
3844 When copying the root table to the new allocation, the length used was
3845 incorrect. The new size was used instead of the current table size,
3847 too much data was copied. Also, the count of available slots for ACPI
3849 was not set correctly. Alexey Starikovskiy, Bob Moore.
3851 Example Code and Data Size: These are the sizes for the OS-independent
3852 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3853 debug version of the code includes the debug output trace mechanism and
3855 much larger code and data size.
3858 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3859 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3861 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3862 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3864 2) iASL Compiler/Disassembler and Tools:
3866 iASL: Implement limited typechecking for values returned from predefined
3867 control methods. The type of any returned static (unnamed) object is now
3868 validated. For example, Return(1). ACPICA BZ 786.
3870 iASL: Fixed a predefined name object verification regression. Fixes a
3872 introduced in version 20100304. An error is incorrectly generated if a
3873 predefined name is declared as a static named object with a value defined
3874 using the keywords "Zero", "One", or "Ones". Lin Ming.
3876 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
3878 reducing the requested registry access rights. ACPICA BZ 842.
3880 Disassembler: fixed a possible fault when generating External()
3882 Introduced in commit ae7d6fd: Properly handle externals with parent-
3884 (carat). Fixes a string length allocation calculation. Lin Ming.
3886 ----------------------------------------
3887 04 March 2010. Summary of changes for version 20100304:
3889 1) ACPI CA Core Subsystem:
3891 Fixed a possible problem with the AML Mutex handling function
3892 AcpiExReleaseMutex where the function could fault under the very rare
3893 condition when the interpreter has blocked, the interpreter lock is
3895 the interpreter is then reentered via the same thread, and attempts to
3896 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
3900 Implemented additional configuration support for the AML "Debug Object".
3901 Output from the debug object can now be enabled via a global variable,
3902 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
3904 This debug output is now available in the release version of ACPICA
3906 of just the debug version. Also, the entire debug output module can now
3908 configured out of the ACPICA build if desired. One new file added,
3909 executer/exdebug.c. Lin Ming, Bob Moore.
3911 Added header support for the ACPI MCHI table (Management Controller Host
3912 Interface Table). This table was added in ACPI 4.0, but the defining
3914 has only recently become available.
3916 Standardized output of integer values for ACPICA warnings/errors. Always
3918 0x prefix for hex output, always use %u for unsigned integer decimal
3920 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
3922 invocations.) These invocations were converted from the original
3923 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
3925 Example Code and Data Size: These are the sizes for the OS-independent
3926 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3927 debug version of the code includes the debug output trace mechanism and
3929 much larger code and data size.
3932 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
3933 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
3935 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3936 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3938 2) iASL Compiler/Disassembler and Tools:
3940 iASL: Implemented typechecking support for static (non-control method)
3941 predefined named objects that are declared with the Name() operator. For
3942 example, the type of this object is now validated to be of type Integer:
3943 Name(_BBN, 1). This change migrates the compiler to using the core
3945 name table instead of maintaining a local version. Added a new file,
3946 aslpredef.c. ACPICA BZ 832.
3948 Disassembler: Added support for the ACPI 4.0 MCHI table.
3950 ----------------------------------------
3951 21 January 2010. Summary of changes for version 20100121:
3953 1) ACPI CA Core Subsystem:
3955 Added the 2010 copyright to all module headers and signons. This affects
3956 virtually every file in the ACPICA core subsystem, the iASL compiler, the
3957 tools/utilities, and the test suites.
3959 Implemented a change to the AcpiGetDevices interface to eliminate
3961 invocations of the _STA method. In the case where a specific _HID is
3962 requested, do not run _STA until a _HID match is found. This eliminates
3963 potentially dozens of _STA calls during a search for a particular
3965 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
3967 Implemented an additional repair for predefined method return values.
3969 to repair unexpected NULL elements within returned Package objects.
3972 Integer of value zero, a NULL String, or a zero-length Buffer as
3974 ACPICA BZ 818. Lin Ming, Bob Moore.
3976 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
3978 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
3980 64-bit AML integers). It is now obsolete and this change removes it from
3982 ACPICA code base, replaced by UINT64. The original typedef has been
3984 for now for compatibility with existing device driver code. ACPICA BZ
3987 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
3989 the parse tree object.
3991 Added additional warning options for the gcc-4 generation. Updated the
3993 accordingly. This includes some code restructuring to eliminate
3995 code, elimination of some gotos, elimination of unused return values,
3997 additional casting, and removal of redundant declarations.
3999 Example Code and Data Size: These are the sizes for the OS-independent
4000 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4001 debug version of the code includes the debug output trace mechanism and
4003 much larger code and data size.
4006 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4007 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4009 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4010 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4012 2) iASL Compiler/Disassembler and Tools:
4014 No functional changes for this release.
4016 ----------------------------------------
4017 14 December 2009. Summary of changes for version 20091214:
4019 1) ACPI CA Core Subsystem:
4021 Enhanced automatic data type conversions for predefined name repairs.
4023 change expands the automatic repairs/conversions for predefined name
4025 values to make Integers, Strings, and Buffers fully interchangeable.
4028 Buffer can be converted to a Package of Integers if necessary. The
4030 module was completely restructured. Lin Ming, Bob Moore.
4032 Implemented automatic removal of null package elements during predefined
4034 repairs. This change will automatically remove embedded and trailing NULL
4035 package elements from returned package objects that are defined to
4038 variable number of sub-packages. The driver is then presented with a
4040 with no null elements to deal with. ACPICA BZ 819.
4042 Implemented a repair for the predefined _FDE and _GTM names. The expected
4043 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4045 possible problems (both seen in the field), where a package of integers
4047 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4050 Implemented additional module-level code support. This change will
4052 execute module-level code that is not at the root of the namespace (under
4054 Device object, etc.). Now executes the code within the current scope
4056 of the root. ACPICA BZ 762. Lin Ming.
4058 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4060 problem where mutex errors can occur when running a _REG method that is
4062 the same scope as a method-defined operation region or an operation
4064 under a module-level IF block. This type of code is rare, so the problem
4066 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4068 Fixed a possible memory leak during module-level code execution. An
4070 could be leaked for each block of executed module-level code if the
4071 interpreter slack mode is enabled This change deletes any implicitly
4073 object from the module-level code block. Lin Ming.
4075 Removed messages for successful predefined repair(s). The repair
4077 was considered too wordy. Now, messages are only unconditionally emitted
4079 the return object cannot be repaired. Existing messages for successful
4080 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4083 Example Code and Data Size: These are the sizes for the OS-independent
4084 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4085 debug version of the code includes the debug output trace mechanism and
4087 much larger code and data size.
4090 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4091 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4093 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4094 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4096 2) iASL Compiler/Disassembler and Tools:
4098 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4100 were no longer automatically removed at the termination of the compile.
4102 acpiexec: Implemented the -f option to specify default region fill value.
4103 This option specifies the value used to initialize buffers that simulate
4104 operation regions. Default value is zero. Useful for debugging problems
4106 depend on a specific initial value for a region or field.
4108 ----------------------------------------
4109 12 November 2009. Summary of changes for version 20091112:
4111 1) ACPI CA Core Subsystem:
4113 Implemented a post-order callback to AcpiWalkNamespace. The existing
4114 interface only has a pre-order callback. This change adds an additional
4115 parameter for a post-order callback which will be more useful for bus
4117 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4119 Modified the behavior of the operation region memory mapping cache for
4120 SystemMemory. Ensure that the memory mappings created for operation
4122 do not cross 4K page boundaries. Crossing a page boundary while mapping
4123 regions can cause kernel warnings on some hosts if the pages have
4125 attributes. Such regions are probably BIOS bugs, and this is the
4127 Linux BZ 14445. Lin Ming.
4129 Implemented an automatic repair for predefined methods that must return
4130 sorted lists. This change will repair (by sorting) packages returned by
4132 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4134 and do not contain NULL package elements. Adds one new file,
4135 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4137 Fixed a possible fault during predefined name validation if a return
4139 object contains NULL elements. Also adds a warning if a NULL element is
4140 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4142 include repair or removal of all such NULL elements where possible.
4144 Implemented additional module-level executable AML code support. This
4146 will execute module-level code that is not at the root of the namespace
4147 (under a Device object, etc.) at table load time. Module-level executable
4149 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4151 Implemented a new internal function to create Integer objects. This
4153 simplifies miscellaneous object creation code. ACPICA BZ 823.
4155 Reduced the severity of predefined repair messages, Warning to Info.
4157 the object was successfully repaired, a warning is too severe. Reduced to
4159 info message for now. These messages may eventually be changed to debug-
4163 Example Code and Data Size: These are the sizes for the OS-independent
4164 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4165 debug version of the code includes the debug output trace mechanism and
4167 much larger code and data size.
4170 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4171 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4173 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4174 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4176 2) iASL Compiler/Disassembler and Tools:
4178 iASL: Implemented Switch() with While(1) so that Break works correctly.
4180 change correctly implements the Switch operator with a surrounding
4182 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4184 iASL: Added a message if a package initializer list is shorter than
4186 length. Adds a new remark for a Package() declaration if an initializer
4188 exists, but is shorter than the declared length of the package. Although
4189 technically legal, this is probably a coding error and it is seen in the
4190 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4192 iASL: Fixed a problem where the compiler could fault after the maximum
4194 of errors was reached (200).
4196 acpixtract: Fixed a possible warning for pointer cast if the compiler
4198 level set very high.
4200 ----------------------------------------
4201 13 October 2009. Summary of changes for version 20091013:
4203 1) ACPI CA Core Subsystem:
4205 Fixed a problem where an Operation Region _REG method could be executed
4207 than once. If a custom address space handler is installed by the host
4209 the "initialize operation regions" phase of the ACPICA initialization,
4211 _REG methods for that address space could be executed twice. This change
4212 fixes the problem. ACPICA BZ 427. Lin Ming.
4214 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4215 invocation of "Scope(\)" is executed (change scope to root), one internal
4216 operand object was leaked. Lin Ming.
4218 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4219 return value is defined as a Field object in the AML, and the field
4220 size is less than or equal to the default width of an integer (32 or
4222 can incorrectly return an Integer instead of a Buffer. ACPICA now
4223 automatically repairs this problem. ACPICA BZ 810.
4225 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4227 "OEM Information" field is often incorrectly returned as an Integer with
4228 value zero if the field is not supported by the platform. This is due to
4230 ambiguity in the ACPI specification. The field should always be a string.
4231 ACPICA now automatically repairs this problem by returning a NULL string
4232 within the returned Package. ACPICA BZ 807.
4234 Example Code and Data Size: These are the sizes for the OS-independent
4235 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4236 debug version of the code includes the debug output trace mechanism and
4238 much larger code and data size.
4241 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4242 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4244 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4245 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4247 2) iASL Compiler/Disassembler and Tools:
4249 Disassembler: Fixed a problem where references to external symbols that
4250 contained one or more parent-prefixes (carats) were not handled
4252 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4254 Disassembler: Restructured the code so that all functions that handle
4255 external symbols are in a single module. One new file is added,
4258 AML Debugger: Added a max count argument for the Batch command (which
4259 executes multiple predefined methods within the namespace.)
4261 iASL: Updated the compiler documentation (User Reference.) Available at
4262 http://www.acpica.org/documentation/. ACPICA BZ 750.
4264 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4267 ----------------------------------------
4268 03 September 2009. Summary of changes for version 20090903:
4270 1) ACPI CA Core Subsystem:
4272 For Windows Vista compatibility, added the automatic execution of an _INI
4273 method located at the namespace root (\_INI). This method is executed at
4274 table load time. This support is in addition to the automatic execution
4276 \_SB._INI. Lin Ming.
4278 Fixed a possible memory leak in the interpreter for AML package objects
4280 the package initializer list is longer than the defined size of the
4282 This apparently can only happen if the BIOS changes the package size on
4284 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4285 interpreter will truncate the package to the defined size (and issue an
4287 message), but previously could leave the extra objects undeleted if they
4289 pre-created during the argument processing (such is the case if the
4291 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4293 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4294 This has been reported in the field. Previously, ACPICA would zero out
4296 buffer/string. Now, the operation is treated as a noop. Provides Windows
4297 compatibility. ACPICA BZ 803. Lin Ming.
4299 Removed an extraneous error message for ASL constructs of the form
4300 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4302 are seen in many BIOSs and are once again treated as NOOPs and no error
4304 emitted when they are encountered. ACPICA BZ 785.
4306 Fixed an extraneous warning message if a _DSM reserved method returns a
4307 Package object. _DSM can return any type of object, so validation on the
4308 return type cannot be performed. ACPICA BZ 802.
4310 Example Code and Data Size: These are the sizes for the OS-independent
4311 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4312 debug version of the code includes the debug output trace mechanism and
4314 much larger code and data size.
4317 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4318 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4320 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4321 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4323 2) iASL Compiler/Disassembler and Tools:
4325 iASL: Fixed a problem with the use of the Alias operator and Resource
4326 Templates. The correct alias is now constructed and no error is emitted.
4329 iASL: Implemented the -I option to specify additional search directories
4331 include files. Allows multiple additional search paths for include files.
4332 Directories are searched in the order specified on the command line
4334 the local directory is searched.) ACPICA BZ 800.
4336 iASL: Fixed a problem where the full pathname for include files was not
4337 emitted for warnings/errors. This caused the IDE support to not work
4338 properly. ACPICA BZ 765.
4340 iASL: Implemented the -@ option to specify a Windows-style response file
4341 containing additional command line options. ACPICA BZ 801.
4343 AcpiExec: Added support to load multiple AML files simultaneously (such
4346 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4347 pathname. These features allow all machine tables to be easily loaded and
4348 debugged together. ACPICA BZ 804.
4350 Disassembler: Added missing support for disassembly of HEST table Error
4354 ----------------------------------------
4355 30 July 2009. Summary of changes for version 20090730:
4357 The ACPI 4.0 implementation for ACPICA is complete with this release.
4359 1) ACPI CA Core Subsystem:
4361 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4362 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4364 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4366 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4368 have been some ACPI 4.0 changes to other existing tables. Split the large
4369 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4371 ACPI 4.0: Implemented predefined name validation for all new names. There
4373 31 new names in ACPI 4.0. The predefined validation module was split into
4375 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4377 Implemented support for so-called "module-level executable code". This is
4378 executable AML code that exists outside of any control method and is
4380 to be executed at table load time. Although illegal since ACPI 2.0, this
4382 of code still exists and is apparently still being created. Blocks of
4384 code are now detected and executed as intended. Currently, the code
4386 must exist under either an If, Else, or While construct; these are the
4387 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
4389 Implemented an automatic dynamic repair for predefined names that return
4390 nested Package objects. This applies to predefined names that are defined
4392 return a variable-length Package of sub-packages. If the number of sub-
4393 packages is one, BIOS code is occasionally seen that creates a simple
4395 package with no sub-packages. This code attempts to fix the problem by
4396 wrapping a new package object around the existing package. These methods
4398 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
4402 Fixed a regression introduced in 20090625 for the AcpiGetDevices
4404 The _HID/_CID matching was broken and no longer matched IDs correctly.
4408 Fixed a problem with AcpiReset where the reset would silently fail if the
4409 register was one of the protected I/O ports. AcpiReset now bypasses the
4411 validation mechanism. This may eventually be driven into the
4415 Fixed a regression related to the recent update of the AcpiRead/Write
4416 interfaces. A sleep/suspend could fail if the optional PM2 Control
4418 does not exist during an attempt to write the Bus Master Arbitration bit.
4419 (However, some hosts already delete the code that writes this bit, and
4421 code may in fact be obsolete at this date.) ACPICA BZ 799.
4423 Fixed a problem where AcpiTerminate could fault if inadvertently called
4425 in succession. ACPICA BZ 795.
4427 Example Code and Data Size: These are the sizes for the OS-independent
4428 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4429 debug version of the code includes the debug output trace mechanism and
4431 much larger code and data size.
4434 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4435 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4437 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4438 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4440 2) iASL Compiler/Disassembler and Tools:
4442 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
4443 changes to existing tables. ACPICA BZ 775.
4445 ----------------------------------------
4446 25 June 2009. Summary of changes for version 20090625:
4448 The ACPI 4.0 Specification was released on June 16 and is available at
4449 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
4450 continue for the next few releases.
4452 1) ACPI CA Core Subsystem:
4454 ACPI 4.0: Implemented interpreter support for the IPMI operation region
4455 address space. Includes support for bi-directional data buffers and an
4457 address space handler (to be installed by an IPMI device driver.) ACPICA
4461 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
4463 support in both the header files and the disassembler.
4465 Completed a major update for the AcpiGetObjectInfo external interface.
4467 - Support for variable, unlimited length HID, UID, and CID strings.
4468 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
4470 - Call the _SxW power methods on behalf of a device object.
4471 - Determine if a device is a PCI root bridge.
4472 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
4473 These changes will require an update to all callers of this interface.
4475 the updated ACPICA Programmer Reference for details. One new source file
4477 been added - utilities/utids.c. ACPICA BZ 368, 780.
4479 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
4480 transfers. The Value parameter has been extended from 32 bits to 64 bits
4482 order to support new ACPI 4.0 tables. These changes will require an
4485 all callers of these interfaces. See the ACPICA Programmer Reference for
4486 details. ACPICA BZ 768.
4488 Fixed several problems with AcpiAttachData. The handler was not invoked
4490 the host node was deleted. The data sub-object was not automatically
4492 when the host node was deleted. The interface to the handler had an
4494 parameter, this was removed. ACPICA BZ 778.
4496 Enhanced the function that dumps ACPI table headers. All non-printable
4497 characters in the string fields are now replaced with '?' (Signature,
4499 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
4500 these fields are occasionally seen in the field. ACPICA BZ 788.
4502 Fixed a problem with predefined method repair code where the code that
4503 attempts to repair/convert an object of incorrect type is only executed
4505 the first time the predefined method is called. The mechanism that
4507 warnings on subsequent calls was interfering with the repair mechanism.
4510 Fixed a possible memory leak in the predefined validation/repair code
4513 buffer is automatically converted to an expected string object.
4515 Removed obsolete 16-bit files from the distribution and from the current
4517 tree head. ACPICA BZ 776.
4519 Example Code and Data Size: These are the sizes for the OS-independent
4520 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4521 debug version of the code includes the debug output trace mechanism and
4523 much larger code and data size.
4526 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4527 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4529 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4530 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4532 2) iASL Compiler/Disassembler and Tools:
4534 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
4535 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
4537 ACPI 4.0: iASL - implemented compile-time validation support for all new
4538 predefined names and control methods (31 total). ACPICA BZ 769.
4540 ----------------------------------------
4541 21 May 2009. Summary of changes for version 20090521:
4543 1) ACPI CA Core Subsystem:
4545 Disabled the preservation of the SCI enable bit in the PM1 control
4547 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
4550 a "preserved" bit - "OSPM always preserves this bit position", section
4551 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
4552 because the bit needs to be explicitly set by the OS as a workaround. No
4553 machines fail if the bit is not preserved. Therefore, ACPICA no longer
4554 attempts to preserve this bit.
4556 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
4557 incorrectly formed _PRT package could cause a fault. Added validation to
4558 ensure that each package element is actually a sub-package.
4560 Implemented a new interface to install or override a single control
4562 AcpiInstallMethod. This interface is useful when debugging in order to
4564 an existing method or to install a missing method without having to
4566 the entire ACPI table. See the ACPICA Programmer Reference for use and
4567 examples. Lin Ming, Bob Moore.
4569 Fixed several reference count issues with the DdbHandle object that is
4570 created from a Load or LoadTable operator. Prevent premature deletion of
4572 object. Also, mark the object as invalid once the table has been
4574 This is needed because the handle itself may not be deleted after the
4576 unload, depending on whether it has been stored in a named object by the
4579 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
4580 mutexes of the same sync level are acquired but then not released in
4582 opposite order, the internally maintained Current Sync Level becomes
4584 and can cause subsequent execution errors. ACPICA BZ 471.
4586 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
4587 specification has been changed to make the SyncLevel for mutex objects
4589 useful. When releasing a mutex, the SyncLevel of the mutex must now be
4591 same as the current sync level. This makes more sense than the previous
4593 (SyncLevel less than or equal). This change updates the code to match the
4596 Fixed a problem with the local version of the AcpiOsPurgeCache function.
4598 (local) cache must be locked during all cache object deletions. Andrew
4601 Updated the Load operator to use operation region interfaces. This
4603 direct memory mapping with region access calls. Now, all region accesses
4605 through the installed region handler as they should.
4607 Simplified and optimized the NsGetNextNode function. Reduced parameter
4609 and reduced code for this frequently used function.
4611 Example Code and Data Size: These are the sizes for the OS-independent
4612 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4613 debug version of the code includes the debug output trace mechanism and
4615 much larger code and data size.
4618 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4619 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4621 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4622 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4624 2) iASL Compiler/Disassembler and Tools:
4626 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
4628 with sub-table disassembly and handling invalid sub-tables. Attempt
4630 after an invalid sub-table ID.
4632 ----------------------------------------
4633 22 April 2009. Summary of changes for version 20090422:
4635 1) ACPI CA Core Subsystem:
4637 Fixed a compatibility issue with the recently released I/O port
4639 mechanism. For windows compatibility, 1) On a port protection violation,
4640 simply ignore the request and do not return an exception (allow the
4642 method to continue execution.) 2) If only part of the request overlaps a
4643 protected port, read/write the individual ports that are not protected.
4647 Enhanced the execution of the ASL/AML BreakPoint operator so that it
4649 breaks into the AML debugger if the debugger is present. This matches the
4650 ACPI-defined behavior.
4652 Fixed several possible warnings related to the use of the configurable
4653 ACPI_THREAD_ID. This type can now be configured as either an integer or a
4654 pointer with no warnings. Also fixes several warnings in printf-like
4655 statements for the 64-bit build when the type is configured as a pointer.
4658 Fixed a number of possible warnings when compiling with gcc 4+ (depending
4660 warning options.) Examples include printf formats, aliasing, unused
4662 missing prototypes, missing switch default statements, use of non-ANSI
4663 library functions, use of non-ANSI constructs. See generate/unix/Makefile
4665 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
4667 Example Code and Data Size: These are the sizes for the OS-independent
4668 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4669 debug version of the code includes the debug output trace mechanism and
4671 much larger code and data size.
4674 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4675 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4677 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4678 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4680 2) iASL Compiler/Disassembler and Tools:
4682 iASL: Fixed a generation warning from Bison 2.3 and fixed several
4687 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
4689 correctly digest Windows/DOS formatted files (with CR/LF).
4691 iASL: Added a new option for "quiet mode" (-va) that produces only the
4692 compilation summary, not individual errors and warnings. Useful for large
4695 AcpiExec: Implemented a new option (-z) to enable a forced
4697 timeout that can be used to detect hang conditions during execution of
4699 code (includes both internal semaphores and AML-defined mutexes and
4702 Added new makefiles for the generation of acpica in a generic unix-like
4703 environment. These makefiles are intended to generate the acpica tools
4705 utilities from the original acpica git source tree structure.
4707 Test Suites: Updated and cleaned up the documentation files. Updated the
4708 copyrights to 2009, affecting all source files. Use the new version of
4710 with quiet mode. Increased the number of available semaphores in the
4712 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
4714 an alternate implementation of the semaphore timeout to allow aslts to
4715 execute fully on Cygwin.
4717 ----------------------------------------
4718 20 March 2009. Summary of changes for version 20090320:
4720 1) ACPI CA Core Subsystem:
4722 Fixed a possible race condition between AcpiWalkNamespace and dynamic
4724 unloads. Added a reader/writer locking mechanism to allow multiple
4726 namespace walks (readers), but block a dynamic table unload until it can
4728 exclusive write access to the namespace. This fixes a problem where a
4730 unload could (possibly catastrophically) delete the portion of the
4732 that is currently being examined by a walk. Adds a new file, utlock.c,
4734 implements the reader/writer lock mechanism. ACPICA BZ 749.
4736 Fixed a regression introduced in version 20090220 where a change to the
4738 handling could cause the ACPICA subsystem to access non-existent I/O
4741 Modified the handling of FADT register and table (FACS/DSDT) addresses.
4743 FADT can contain both 32-bit and 64-bit versions of these addresses.
4744 Previously, the 64-bit versions were favored, meaning that if both 32 and
4746 versions were valid, but not equal, the 64-bit version was used. This was
4747 found to cause some machines to fail. Now, in this case, the 32-bit
4749 is used instead. This now matches the Windows behavior.
4751 Implemented a new mechanism to protect certain I/O ports. Provides
4753 compatibility and protects the standard PC I/O ports from access via AML
4754 code. Adds a new file, hwvalid.c
4756 Fixed a possible extraneous warning message from the FADT support. The
4757 message warns of a 32/64 length mismatch between the legacy and GAS
4758 definitions for a register.
4760 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
4762 made obsolete by the port protection mechanism above. It was previously
4764 to validate the entire address range of an operation region, which could
4766 incorrect if the range included illegal ports, but fields within the
4767 operation region did not actually access those ports. Validation is now
4768 performed on a per-field basis instead of the entire region.
4770 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
4771 Ignored bits must be "preserved" according to the ACPI spec. Usually,
4773 means a read/modify/write when writing to the register. However, for
4775 registers, writing a one means clear the event. Writing a zero means
4777 the event (do not clear.) This behavior is clarified in the ACPI 4.0
4779 and the ACPICA code now simply always writes a zero to the ignored bit.
4781 Modified the handling of ignored bits for the PM1 A/B Control Registers.
4783 per the ACPI specification, for the control registers, preserve
4784 (read/modify/write) all bits that are defined as either reserved or
4787 Updated the handling of write-only bits in the PM1 A/B Control Registers.
4788 When reading the register, zero the write-only bits as per the ACPI spec.
4789 ACPICA BZ 443. Lin Ming.
4791 Removed "Linux" from the list of supported _OSI strings. Linux no longer
4792 wants to reply true to this request. The Windows strings are the only
4794 through the AML that are tested and known to work properly.
4797 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4798 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4800 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4801 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4803 2) iASL Compiler/Disassembler and Tools:
4805 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
4809 ----------------------------------------
4810 20 February 2009. Summary of changes for version 20090220:
4812 1) ACPI CA Core Subsystem:
4814 Optimized the ACPI register locking. Removed locking for reads from the
4816 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
4818 not required when reading the single-bit registers. The
4819 AcpiGetRegisterUnlocked function is no longer needed and has been
4821 This will improve performance for reads on these registers. ACPICA BZ
4824 Fixed the parameter validation for AcpiRead/Write. Now return
4825 AE_BAD_PARAMETER if the input register pointer is null, and
4828 the register has an address of zero. Previously, these cases simply
4830 AE_OK. For optional registers such as PM1B status/enable/control, the
4832 should check for a valid register address before calling. ACPICA BZ 748.
4834 Renamed the external ACPI bit register access functions. Renamed
4835 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
4836 functions. The new names are AcpiReadBitRegister and
4837 AcpiWriteBitRegister.
4838 Also, restructured the code for these functions by simplifying the code
4840 and condensing duplicate code to reduce code size.
4842 Added new functions to transparently handle the possibly split PM1 A/B
4843 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
4845 now handle the split registers for PM1 Status, Enable, and Control.
4850 Added a function to handle the PM1 control registers,
4851 AcpiHwWritePm1Control.
4852 This function writes both of the PM1 control registers (A/B). These
4854 are different than the PM1 A/B status and enable registers in that
4856 values can be written to the A/B registers. Most notably, the SLP_TYP
4858 can be different, as per the values returned from the _Sx predefined
4861 Removed an extra register write within AcpiHwClearAcpiStatus. This
4863 was writing an optional PM1B status register twice. The existing call to
4865 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
4867 register. ACPICA BZ 751.
4869 Split out the PM1 Status registers from the FADT. Added new globals for
4871 registers (A/B), similar to the way the PM1 Enable registers are handled.
4872 Instead of overloading the FADT Event Register blocks. This makes the
4874 clearer and less prone to error.
4876 Fixed the warning message for when the platform contains too many ACPI
4878 for the default size of the global root table data structure. The
4880 for the truncation value was incorrect.
4882 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
4883 obsolete macro, since it is now a simple reference to ->common.type.
4885 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
4887 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
4888 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
4889 simply SLEEP_TYPE. ACPICA BZ 754.
4891 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
4892 function is only needed on 64-bit host operating systems and is thus not
4893 included for 32-bit hosts.
4895 Debug output: print the input and result for invocations of the _OSI
4897 control method via the ACPI_LV_INFO debug level. Also, reduced some of
4899 verbosity of this debug level. Len Brown.
4901 Example Code and Data Size: These are the sizes for the OS-independent
4902 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4903 debug version of the code includes the debug output trace mechanism and
4905 much larger code and data size.
4908 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4909 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4911 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4912 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4914 2) iASL Compiler/Disassembler and Tools:
4916 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
4917 various legal performance profiles.
4919 ----------------------------------------
4920 23 January 2009. Summary of changes for version 20090123:
4922 1) ACPI CA Core Subsystem:
4924 Added the 2009 copyright to all module headers and signons. This affects
4925 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4926 the tools/utilities.
4928 Implemented a change to allow the host to override any ACPI table,
4930 dynamically loaded tables. Previously, only the DSDT could be replaced by
4932 host. With this change, the AcpiOsTableOverride interface is called for
4934 table found in the RSDT/XSDT during ACPICA initialization, and also
4936 a table is dynamically loaded via the AML Load operator.
4938 Updated FADT flag definitions, especially the Boot Architecture flags.
4940 Debugger: For the Find command, automatically pad the input ACPI name
4942 underscores if the name is shorter than 4 characters. This enables a
4944 with the actual namespace entry which is itself padded with underscores.
4946 Example Code and Data Size: These are the sizes for the OS-independent
4947 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4948 debug version of the code includes the debug output trace mechanism and
4950 much larger code and data size.
4953 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
4954 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
4956 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4957 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4959 2) iASL Compiler/Disassembler and Tools:
4961 Fix build error under Bison-2.4.
4963 Dissasembler: Enhanced FADT support. Added decoding of the Boot
4965 flags. Now decode all flags, regardless of the FADT version. Flag output
4966 includes the FADT version which first defined each flag.
4968 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
4970 DSDT). Windows only.
4972 ----------------------------------------
4973 04 December 2008. Summary of changes for version 20081204:
4975 1) ACPI CA Core Subsystem:
4977 The ACPICA Programmer Reference has been completely updated and revamped
4979 this release. This includes updates to the external interfaces, OSL
4980 interfaces, the overview sections, and the debugger reference.
4982 Several new ACPICA interfaces have been implemented and documented in the
4983 programmer reference:
4984 AcpiReset - Writes the reset value to the FADT-defined reset register.
4985 AcpiDisableAllGpes - Disable all available GPEs.
4986 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
4987 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
4988 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
4989 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
4990 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
4992 Most of the public ACPI hardware-related interfaces have been moved to a
4994 file, components/hardware/hwxface.c
4996 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
4997 register lengths within the FADT are now used, and the low level ACPI
4998 register access no longer hardcodes the ACPI register lengths. Given that
4999 there may be some risk in actually trusting the FADT register lengths, a
5001 time option was added to fall back to the default hardcoded lengths if
5003 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5004 option is set to true for now, and a warning is issued if a suspicious
5006 register length is overridden with the default value.
5008 Fixed a reference count issue in NsRepairObject. This problem was
5010 in version 20081031 as part of a fix to repair Buffer objects within
5013 Added semaphore support to the Linux/Unix application OS-services layer
5014 (OSL). ACPICA BZ 448. Lin Ming.
5016 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5018 be implemented in the OSL, or will binary semaphores be used instead.
5020 Example Code and Data Size: These are the sizes for the OS-independent
5021 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5022 debug version of the code includes the debug output trace mechanism and
5024 much larger code and data size.
5027 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5028 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5030 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5031 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5033 2) iASL Compiler/Disassembler and Tools:
5035 iASL: Completed the '-e' option to include additional ACPI tables in
5038 aid with disassembly and External statement generation. ACPICA BZ 742.
5042 iASL: Removed the "named object in while loop" error. The compiler cannot
5043 determine how many times a loop will execute. ACPICA BZ 730.
5045 Disassembler: Implemented support for FADT revision 2 (MS extension).
5049 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5052 ----------------------------------------
5053 31 October 2008. Summary of changes for version 20081031:
5055 1) ACPI CA Core Subsystem:
5057 Restructured the ACPICA header files into public/private. acpi.h now
5059 only the "public" acpica headers. All other acpica headers are "private"
5061 should not be included by acpica users. One new file, accommon.h is used
5063 include the commonly used private headers for acpica code generation.
5065 plans include moving all private headers to a new subdirectory.
5067 Implemented an automatic Buffer->String return value conversion for
5068 predefined ACPI methods. For these methods (such as _BIF), added
5070 conversion for return objects that are required to be a String, but a
5072 was found instead. This can happen when reading string battery data from
5074 operation region, because it used to be difficult to convert the data
5076 buffer to string from within the ASL. Ensures that the host OS is
5078 with a valid null-terminated string. Linux BZ 11822.
5080 Updated the FACS waking vector interfaces. Split
5081 AcpiSetFirmwareWakingVector
5082 into two: one for the 32-bit vector, another for the 64-bit vector. This
5084 required because the host OS must setup the wake much differently for
5086 vector (real vs. protected mode, etc.) and the interface itself should
5089 deciding which vector to use. Also, eliminated the
5090 GetFirmwareWakingVector
5091 interface, as it served no purpose (only the firmware reads the vector,
5093 only writes the vector.) ACPICA BZ 731.
5095 Implemented a mechanism to escape infinite AML While() loops. Added a
5097 counter to force exit from AML While loops if the count becomes too
5099 This can occur in poorly written AML when the hardware does not respond
5100 within a while loop and the loop does not implement a timeout. The
5102 loop count is configurable. A new exception code is returned when a loop
5104 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5106 Optimized the execution of AML While loops. Previously, a control state
5107 object was allocated and freed for each execution of the loop. The
5108 optimization is to simply reuse the control state for each iteration.
5110 speeds up the raw loop execution time by about 5%.
5112 Enhanced the implicit return mechanism. For Windows compatibility, return
5114 implicit integer of value zero for methods that contain no executable
5116 Such methods are seen in the field as stubs (presumably), and can cause
5117 drivers to fail if they expect a return value. Lin Ming.
5119 Allow multiple backslashes as root prefixes in namepaths. In a fully
5120 qualified namepath, allow multiple backslash prefixes. This can happen
5122 is seen in the field) because of the use of a double-backslash in strings
5123 (since backslash is the escape character) causing confusion. ACPICA BZ
5127 Emit a warning if two different FACS or DSDT tables are discovered in the
5128 FADT. Checks if there are two valid but different addresses for the FACS
5130 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5132 Consolidated the method argument count validation code. Merged the code
5134 validates control method argument counts into the predefined validation
5135 module. Eliminates possible multiple warnings for incorrect argument
5138 Implemented ACPICA example code. Includes code for ACPICA initialization,
5139 handler installation, and calling a control method. Available at
5140 source/tools/examples.
5142 Added a global pointer for FACS table to simplify internal FACS access.
5144 the global pointer instead of using AcpiGetTableByIndex for each FACS
5146 This simplifies the code for the Global Lock and the Firmware Waking
5149 Example Code and Data Size: These are the sizes for the OS-independent
5150 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5151 debug version of the code includes the debug output trace mechanism and
5153 much larger code and data size.
5156 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5157 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5159 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5160 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5162 2) iASL Compiler/Disassembler and Tools:
5164 iASL: Improved disassembly of external method calls. Added the -e option
5166 allow the inclusion of additional ACPI tables to help with the
5169 method invocations and the generation of external declarations during the
5170 disassembly. Certain external method invocations cannot be disassembled
5171 properly without the actual declaration of the method. Use the -e option
5173 include the table where the external method(s) are actually declared.
5175 useful for disassembling SSDTs that make method calls back to the master
5176 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5178 -e dsdt.aml ssdt1.aml
5180 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5181 problem where the use of an alias within a namepath would result in a not
5182 found error or cause the compiler to fault. Also now allows forward
5183 references from the Alias operator itself. ACPICA BZ 738.
5185 ----------------------------------------
5186 26 September 2008. Summary of changes for version 20080926:
5188 1) ACPI CA Core Subsystem:
5190 Designed and implemented a mechanism to validate predefined ACPI methods
5192 objects. This code validates the predefined ACPI objects (objects whose
5194 start with underscore) that appear in the namespace, at the time they are
5195 evaluated. The argument count and the type of the returned object are
5196 validated against the ACPI specification. The purpose of this validation
5198 to detect problems with the BIOS-implemented predefined ACPI objects
5200 the results are returned to the ACPI-related drivers. Future enhancements
5202 include actual repair of incorrect return objects where possible. Two new
5203 files are nspredef.c and acpredef.h.
5205 Fixed a fault in the AML parser if a memory allocation fails during the
5207 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5209 Fixed an issue with implicit return compatibility. This change improves
5211 implicit return mechanism to be more compatible with the MS interpreter.
5213 Ming, ACPICA BZ 349.
5215 Implemented support for zero-length buffer-to-string conversions. Allow
5217 length strings during interpreter buffer-to-string conversions. For
5219 during the ToDecimalString and ToHexString operators, as well as implicit
5220 conversions. Fiodor Suietov, ACPICA BZ 585.
5222 Fixed two possible memory leaks in the error exit paths of
5223 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5225 similar in that they use a stack of state objects in order to eliminate
5226 recursion. The stack must be fully unwound and deallocated if an error
5227 occurs. Lin Ming. ACPICA BZ 383.
5229 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5231 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5232 Moore ACPICA BZ 442.
5234 Removed the obsolete version number in module headers. Removed the
5235 "$Revision" number that appeared in each module header. This version
5237 was useful under SourceSafe and CVS, but has no meaning under git. It is
5239 only incorrect, it could also be misleading.
5241 Example Code and Data Size: These are the sizes for the OS-independent
5242 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5243 debug version of the code includes the debug output trace mechanism and
5245 much larger code and data size.
5248 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5249 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5251 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5252 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5254 ----------------------------------------
5255 29 August 2008. Summary of changes for version 20080829:
5257 1) ACPI CA Core Subsystem:
5259 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5260 Reference. Changes include the elimination of cheating on the Object
5262 for the DdbHandle subtype, addition of a reference class field to
5263 differentiate the various reference types (instead of an AML opcode), and
5265 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5267 Reduce an error to a warning for an incorrect method argument count.
5268 Previously aborted with an error if too few arguments were passed to a
5269 control method via the external ACPICA interface. Now issue a warning
5271 and continue. Handles the case where the method inadvertently declares
5273 many arguments, but does not actually use the extra ones. Applies mainly
5275 the predefined methods. Lin Ming. Linux BZ 11032.
5277 Disallow the evaluation of named object types with no intrinsic value.
5279 AE_TYPE for objects that have no value and therefore evaluation is
5281 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5283 these types were allowed, but an exception would be generated at some
5285 during the evaluation. Now, the error is generated up front.
5287 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5288 (nsnames.c). Fixes a leak in the error exit path.
5290 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5292 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5294 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5297 Removed obsolete and/or unused exception codes from the acexcep.h header.
5298 There is the possibility that certain device drivers may be affected if
5300 use any of these exceptions.
5302 The ACPICA documentation has been added to the public git source tree,
5304 acpica/documents. Included are the ACPICA programmer reference, the iASL
5305 compiler reference, and the changes.txt release logfile.
5307 Example Code and Data Size: These are the sizes for the OS-independent
5308 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5309 debug version of the code includes the debug output trace mechanism and
5311 much larger code and data size.
5314 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5315 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5317 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5318 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5320 2) iASL Compiler/Disassembler and Tools:
5322 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5323 defines _SCP with 3 arguments. Previous versions defined it with only 1
5324 argument. iASL now allows both definitions.
5326 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5328 length subtables when disassembling ACPI tables. Also fixed a couple of
5329 errors where a full 16-bit table type field was not extracted from the
5333 acpisrc: Improve comment counting mechanism for generating source code
5334 statistics. Count first and last lines of multi-line comments as
5336 not comment lines. Handle Linux legal header in addition to standard
5340 ----------------------------------------
5342 29 July 2008. Summary of changes for version 20080729:
5344 1) ACPI CA Core Subsystem:
5346 Fix a possible deadlock in the GPE dispatch. Remove call to
5347 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5349 to acquire the GPE lock but can deadlock since the GPE lock is already
5351 at dispatch time. This code was introduced in version 20060831 as a
5353 to Linux BZ 6881 and has since been removed from Linux.
5355 Add a function to dereference returned reference objects. Examines the
5357 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5359 automatically dereferenced in an attempt to return something useful
5361 reference types cannot be converted into an external ACPI_OBJECT.)
5363 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5365 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5366 subtables for the MADT and one new subtable for the SRAT. Includes
5367 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5369 Specification, June 2008.
5371 Additional error checking for pathname utilities. Add error check after
5373 calls to AcpiNsGetPathnameLength. Add status return from
5374 AcpiNsBuildExternalPath and check after all calls. Add parameter
5376 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5378 Return status from the global init function AcpiUtGlobalInitialize. This
5380 used by both the kernel subsystem and the utilities such as iASL
5382 The function could possibly fail when the caches are initialized. Yang
5385 Add a function to decode reference object types to strings. Created for
5386 improved error messages.
5388 Improve object conversion error messages. Better error messages during
5390 conversion from internal to the external ACPI_OBJECT. Used for external
5392 to AcpiEvaluateObject.
5394 Example Code and Data Size: These are the sizes for the OS-independent
5395 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5396 debug version of the code includes the debug output trace mechanism and
5398 much larger code and data size.
5401 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5402 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5404 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5405 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5407 2) iASL Compiler/Disassembler and Tools:
5409 Debugger: fix a possible hang when evaluating non-methods. Fixes a
5411 introduced in version 20080701. If the object being evaluated (via
5413 command) is not a method, the debugger can hang while trying to obtain
5415 existent parameters.
5417 iASL: relax error for using reserved "_T_x" identifiers. These names can
5418 appear in a disassembled ASL file if they were emitted by the original
5419 compiler. Instead of issuing an error or warning and forcing the user to
5420 manually change these names, issue a remark instead.
5422 iASL: error if named object created in while loop. Emit an error if any
5424 object is created within a While loop. If allowed, this code will
5427 run-time error on the second iteration of the loop when an attempt is
5430 create the same named object twice. ACPICA bugzilla 730.
5432 iASL: Support absolute pathnames for include files. Add support for
5434 pathnames within the Include operator. previously, only relative
5438 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
5440 The ACPI spec requires one interrupt minimum. BZ 423
5442 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
5443 Handles the case for the Interrupt Resource Descriptor where
5444 the ResourceSource argument is omitted but ResourceSourceIndex
5445 is present. Now leave room for the Index. BZ 426
5447 iASL: Prevent error message if CondRefOf target does not exist. Fixes
5449 where an error message is emitted if the target does not exist. BZ 516
5451 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
5452 (get ACPI tables on Windows). This was apparently broken in version
5455 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
5457 the EOF happens immediately after the last table in the input file. Print
5458 completion message. Previously, no message was displayed in this case.
5460 ----------------------------------------
5461 01 July 2008. Summary of changes for version 20080701:
5463 0) Git source tree / acpica.org
5465 Fixed a problem where a git-clone from http would not transfer the entire
5468 1) ACPI CA Core Subsystem:
5470 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
5471 enable bit. Now performs a read-change-write of the enable register
5473 of simply writing out the cached enable mask. This will prevent
5475 enabling of GPEs if a rogue GPE is received during initialization (before
5477 handlers are installed.)
5479 Implemented a copy for dynamically loaded tables. Previously, dynamically
5480 loaded tables were simply mapped - but on some machines this memory is
5481 corrupted after suspend. Now copy the table to a local buffer. For the
5482 OpRegion case, added checksum verify. Use the table length from the table
5483 header, not the region length. For the Buffer case, use the table length
5484 also. Dennis Noordsij, Bob Moore. BZ 10734
5486 Fixed a problem where the same ACPI table could not be dynamically loaded
5488 unloaded more than once. Without this change, a table cannot be loaded
5490 once it has been loaded/unloaded one time. The current mechanism does not
5491 unregister a table upon an unload. During a load, if the same table is
5493 this no longer returns an exception. BZ 722
5495 Fixed a problem where the wrong descriptor length was calculated for the
5496 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
5498 are calculated as 12 bytes long, but the actual length in the internal
5499 descriptor is 16 because of the round-up to 8 on the 64-bit build.
5501 by Linn Crosetto. BZ 728
5503 Fixed a possible memory leak in the Unload operator. The DdbHandle
5505 by Load() did not have its reference count decremented during unload,
5507 to a memory leak. Lin Ming. BZ 727
5509 Fixed a possible memory leak when deleting thermal/processor objects. Any
5510 associated notify handlers (and objects) were not being deleted. Fiodor
5513 Fixed the ordering of the ASCII names in the global mutex table to match
5515 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
5517 Vegard Nossum. BZ 726
5519 Enhanced the AcpiGetObjectInfo interface to return the number of required
5520 arguments if the object is a control method. Added this call to the
5522 so the proper number of default arguments are passed to a method. This
5523 prevents a warning when executing methods from AcpiExec.
5525 Added a check for an invalid handle in AcpiGetObjectInfo. Return
5526 AE_BAD_PARAMETER if input handle is invalid. BZ 474
5528 Fixed an extraneous warning from exconfig.c on the 64-bit build.
5530 Example Code and Data Size: These are the sizes for the OS-independent
5531 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5532 debug version of the code includes the debug output trace mechanism and
5534 much larger code and data size.
5537 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5538 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5540 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5541 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5543 2) iASL Compiler/Disassembler and Tools:
5545 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
5546 resource descriptor names.
5548 iASL: Detect invalid ASCII characters in input (windows version). Removed
5550 "-CF" flag from the flex compile, enables correct detection of non-ASCII
5551 characters in the input. BZ 441
5553 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
5555 "result of operation not used" warning when the DDB handle returned from
5556 LoadTable is not used. The warning is not needed. BZ 590
5558 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
5561 pass address of table to the AML. Added option to disable OpRegion
5563 to allow creation of an OpRegion with a real address that was passed to
5565 All of this allows testing of the Load and Unload operators from
5568 Debugger: update tables command for unloaded tables. Handle unloaded
5570 and use the standard table header output routine.
5572 ----------------------------------------
5573 09 June 2008. Summary of changes for version 20080609:
5575 1) ACPI CA Core Subsystem:
5577 Implemented a workaround for reversed _PRT entries. A significant number
5579 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
5580 change dynamically detects and repairs this problem. Provides
5582 with MS ACPI. BZ 6859
5584 Simplified the internal ACPI hardware interfaces to eliminate the locking
5585 flag parameter from Register Read/Write. Added a new external interface,
5586 AcpiGetRegisterUnlocked.
5588 Fixed a problem where the invocation of a GPE control method could hang.
5590 was a regression introduced in 20080514. The new method argument count
5591 validation mechanism can enter an infinite loop when a GPE method is
5592 dispatched. Problem fixed by removing the obsolete code that passed GPE
5594 information to the notify handler via the control method parameter
5597 Fixed a problem where the _SST execution status was incorrectly returned
5599 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
5601 20080514. _SST is optional and a NOT_FOUND exception should never be
5604 Fixed a problem where a deleted object could be accessed from within the
5606 parser. This was a regression introduced in version 20080123 as a fix for
5608 Unload operator. Lin Ming. BZ 10669
5610 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
5612 and eliminated the use of a negative index in a loop. Operands are now
5613 displayed in the correct order, not backwards. This also fixes a
5615 introduced in 20080514 on 64-bit systems where the elimination of
5616 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
5619 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
5621 path did not delete a locally allocated structure.
5623 Updated definitions for the DMAR and SRAT tables to synchronize with the
5624 current specifications. Includes disassembler support.
5626 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
5627 loop termination value was used. Loop terminated on iteration early,
5629 one mutex. Linn Crosetto
5631 Example Code and Data Size: These are the sizes for the OS-independent
5632 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5633 debug version of the code includes the debug output trace mechanism and
5635 much larger code and data size.
5638 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5639 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5641 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5642 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5644 2) iASL Compiler/Disassembler and Tools:
5646 Disassembler: Implemented support for EisaId() within _CID objects. Now
5647 disassemble integer _CID objects back to EisaId invocations, including
5648 multiple integers within _CID packages. Includes single-step support for
5651 Disassembler: Added support for DMAR and SRAT table definition changes.
5653 ----------------------------------------
5654 14 May 2008. Summary of changes for version 20080514:
5656 1) ACPI CA Core Subsystem:
5658 Fixed a problem where GPEs were enabled too early during the ACPICA
5659 initialization. This could lead to "handler not installed" errors on some
5660 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
5662 ensures that all operation regions and devices throughout the namespace
5664 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
5666 Implemented a change to the enter sleep code. Moved execution of the _GTS
5667 method to just before setting sleep enable bit. The execution was moved
5669 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
5670 immediately before the SLP_EN bit is set, as per the ACPI specification.
5673 Implemented a fix to disable unknown GPEs (2nd version). Now always
5675 the GPE, even if ACPICA thinks that that it is already disabled. It is
5676 possible that the AML or some other code has enabled the GPE unbeknownst
5680 Fixed a problem with the Field operator where zero-length fields would
5682 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
5684 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
5686 Implemented a fix for the Load operator, now load the table at the
5688 root. This reverts a change introduced in version 20071019. The table is
5690 loaded at the namespace root even though this goes against the ACPI
5691 specification. This provides compatibility with other ACPI
5693 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
5696 Fixed a problem where ACPICA would not Load() tables with unusual
5698 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
5699 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
5700 Therefore, signature validation is worthless. Apparently MS ACPI accepts
5702 signatures, ACPICA must be compatible. BZ 10454.
5704 Fixed a possible negative array index in AcpiUtValidateException. Added
5706 fields to the exception string arrays to eliminate a -1 subtraction on
5710 Updated the debug tracking macros to reduce overall code and data size.
5711 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
5712 instead of pointers to static strings. Jan Beulich and Bob Moore.
5714 Implemented argument count checking in control method invocation via
5715 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
5717 many. This applies only to extern programmatic control method execution,
5719 method-to-method calls within the AML. Lin Ming.
5721 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
5723 longer needed, especially with the removal of 16-bit support. It was
5725 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
5728 32/64-bit platforms is required.
5730 Added the C const qualifier for appropriate string constants -- mostly
5731 MODULE_NAME and printf format strings. Jan Beulich.
5733 Example Code and Data Size: These are the sizes for the OS-independent
5734 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5735 debug version of the code includes the debug output trace mechanism and
5737 much larger code and data size.
5740 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5741 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5743 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5744 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5746 2) iASL Compiler/Disassembler and Tools:
5748 Implemented ACPI table revision ID validation in the disassembler. Zero
5750 always invalid. For DSDTs, the ID controls the interpreter integer width.
5752 means 32-bit and this is unusual. 2 or greater is 64-bit.
5754 ----------------------------------------
5755 21 March 2008. Summary of changes for version 20080321:
5757 1) ACPI CA Core Subsystem:
5759 Implemented an additional change to the GPE support in order to suppress
5760 spurious or stray GPEs. The AcpiEvDisableGpe function will now
5762 disable incoming GPEs that are neither enabled nor disabled -- meaning
5764 the GPE is unknown to the system. This should prevent future interrupt
5766 from that GPE. BZ 6217 (Zhang Rui)
5768 Fixed a problem where NULL package elements were not returned to the
5769 AcpiEvaluateObject interface correctly. The element was simply ignored
5770 instead of returning a NULL ACPI_OBJECT package element, potentially
5772 a buffer overflow and/or confusing the caller who expected a fixed number
5774 elements. BZ 10132 (Lin Ming, Bob Moore)
5776 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
5778 Qword), Field, BankField, and IndexField operators when invoked from
5780 an executing control method. In this case, these operators created
5782 nodes that were incorrectly left marked as permanent nodes instead of
5783 temporary nodes. This could cause a problem if there is race condition
5784 between an exiting control method and a running namespace walk. (Reported
5788 Fixed a problem where the CreateField and CreateXXXField operators would
5789 incorrectly allow duplicate names (the name of the field) with no
5793 Implemented several changes for Notify handling. Added support for new
5795 values (ACPI 2.0+) and improved the Notify debug output. Notify on
5796 PowerResource objects is no longer allowed, as per the ACPI
5798 (Bob Moore, Zhang Rui)
5800 All Reference Objects returned via the AcpiEvaluateObject interface are
5802 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
5804 NULL objects - either NULL package elements or unresolved named
5807 Fixed a problem where an extraneous debug message was produced for
5809 objects (when debugging enabled). The message "Package List length larger
5810 than NumElements count" is now produced in the correct case, and is now
5812 error message rather than a debug message. Added a debug message for the
5813 opposite case, where NumElements is larger than the Package List (the
5815 will be padded out with NULL elements as per the ACPI spec.)
5817 Implemented several improvements for the output of the ASL "Debug" object
5819 clarify and keep all data for a given object on one output line.
5821 Fixed two size calculation issues with the variable-length Start
5823 resource descriptor.
5825 Example Code and Data Size: These are the sizes for the OS-independent
5826 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5827 debug version of the code includes the debug output trace mechanism and
5829 a much larger code and data size.
5832 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5833 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5835 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5836 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5838 2) iASL Compiler/Disassembler and Tools:
5840 Fixed a problem with the use of the Switch operator where execution of
5842 containing method by multiple concurrent threads could cause an
5843 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
5844 actual Switch opcode, it must be simulated with local named temporary
5845 variables and if/else pairs. The solution chosen was to mark any method
5847 uses Switch as Serialized, thus preventing multiple thread entries. BZ
5850 ----------------------------------------
5851 13 February 2008. Summary of changes for version 20080213:
5853 1) ACPI CA Core Subsystem:
5855 Implemented another MS compatibility design change for GPE/Notify
5857 GPEs are now cleared/enabled asynchronously to allow all pending notifies
5859 complete first. It is expected that the OSL will queue the enable request
5860 behind all pending notify requests (may require changes to the local host
5862 in AcpiOsExecute). Alexey Starikovskiy.
5864 Fixed a problem where buffer and package objects passed as arguments to a
5865 control method via the external AcpiEvaluateObject interface could cause
5867 AE_AML_INTERNAL exception depending on the order and type of operators
5868 executed by the target control method.
5870 Fixed a problem where resource descriptor size optimization could cause a
5871 problem when a _CRS resource template is passed to a _SRS method. The
5873 resource template must use the same descriptors (with the same size) as
5874 returned from _CRS. This change affects the following resource
5876 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
5879 Fixed a problem where a CopyObject to RegionField, BankField, and
5881 objects did not perform an implicit conversion as it should. These types
5883 retain their initial type permanently as per the ACPI specification.
5885 a CopyObject to all other object types should not perform an implicit
5886 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
5888 Fixed a problem with the AcpiGetDevices interface where the mechanism to
5889 match device CIDs did not examine the entire list of available CIDs, but
5890 instead aborted on the first non-matching CID. Andrew Patterson.
5892 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
5894 inadvertently changed to return a 16-bit value instead of a 32-bit value,
5895 truncating the upper dword of a 64-bit value. This macro is only used to
5896 display debug output, so no incorrect calculations were made. Also,
5897 reimplemented the macro so that a 64-bit shift is not performed by
5898 inefficient compilers.
5900 Added missing va_end statements that should correspond with each va_start
5903 Example Code and Data Size: These are the sizes for the OS-independent
5904 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5905 debug version of the code includes the debug output trace mechanism and
5907 a much larger code and data size.
5910 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5911 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5913 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5914 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5916 2) iASL Compiler/Disassembler and Tools:
5918 Implemented full disassembler support for the following new ACPI tables:
5919 BERT, EINJ, and ERST. Implemented partial disassembler support for the
5920 complicated HEST table. These tables support the Windows Hardware Error
5921 Architecture (WHEA).
5923 ----------------------------------------
5924 23 January 2008. Summary of changes for version 20080123:
5926 1) ACPI CA Core Subsystem:
5928 Added the 2008 copyright to all module headers and signons. This affects
5929 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5930 the tools/utilities.
5932 Fixed a problem with the SizeOf operator when used with Package and
5934 objects. These objects have deferred execution for some arguments, and
5936 execution is now completed before the SizeOf is executed. This problem
5938 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
5942 Implemented an enhancement to the interpreter "slack mode". In the
5945 an explicit return or an implicitly returned object from the last
5947 opcode, a control method will now implicitly return an integer of value 0
5949 Microsoft compatibility. (Lin Ming) BZ 392
5951 Fixed a problem with the Load operator where an exception was not
5954 the case where the table is already loaded. (Lin Ming) BZ 463
5956 Implemented support for the use of DDBHandles as an Indexed Reference, as
5958 the ACPI spec. (Lin Ming) BZ 486
5960 Implemented support for UserTerm (Method invocation) for the Unload
5962 as per the ACPI spec. (Lin Ming) BZ 580
5964 Fixed a problem with the LoadTable operator where the OemId and
5966 input strings could cause unexpected failures if they were shorter than
5968 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
5970 Implemented support for UserTerm (Method invocation) for the Unload
5972 as per the ACPI spec. (Lin Ming) BZ 580
5974 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
5976 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
5978 Example Code and Data Size: These are the sizes for the OS-independent
5979 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5980 debug version of the code includes the debug output trace mechanism and
5982 a much larger code and data size.
5985 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
5986 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
5988 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5989 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5991 2) iASL Compiler/Disassembler and Tools:
5993 Implemented support in the disassembler for checksum validation on
5995 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
5997 header dump at the start of the disassembly.
5999 Implemented additional debugging information in the namespace listing
6001 created during compilation. In addition to the namespace hierarchy, the
6003 pathname to each namespace object is displayed.
6005 Fixed a problem with the disassembler where invalid ACPI tables could
6007 faults or infinite loops.
6009 Fixed an unexpected parse error when using the optional "parameter types"
6010 list in a control method declaration. (Lin Ming) BZ 397
6012 Fixed a problem where two External declarations with the same name did
6014 cause an error (Lin Ming) BZ 509
6016 Implemented support for full TermArgs (adding Argx, Localx and method
6017 invocation) for the ParameterData parameter to the LoadTable operator.
6021 ----------------------------------------
6022 19 December 2007. Summary of changes for version 20071219:
6024 1) ACPI CA Core Subsystem:
6026 Implemented full support for deferred execution for the TermArg string
6027 arguments for DataTableRegion. This enables forward references and full
6028 operand resolution for the three string arguments. Similar to
6030 deferred argument execution.) Lin Ming. BZ 430
6032 Implemented full argument resolution support for the BankValue argument
6034 BankField. Previously, only constants were supported, now any TermArg may
6036 used. Lin Ming BZ 387, 393
6038 Fixed a problem with AcpiGetDevices where the search of a branch of the
6039 device tree could be terminated prematurely. In accordance with the ACPI
6040 specification, the search down the current branch is terminated if a
6042 is both not present and not functional (instead of just not present.)
6046 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6048 the underlying AML code changed the GPE enable registers. Now, any
6050 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6052 instead of simply ignored. Rui Zhang.
6054 Fixed a problem with Index Fields where the Index register was
6056 limited to a maximum of 32 bits. Now any size may be used.
6058 Fixed a couple memory leaks associated with "implicit return" objects
6060 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6062 Example Code and Data Size: These are the sizes for the OS-independent
6063 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6064 debug version of the code includes the debug output trace mechanism and
6066 a much larger code and data size.
6069 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6070 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6072 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6073 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6075 ----------------------------------------
6076 14 November 2007. Summary of changes for version 20071114:
6078 1) ACPI CA Core Subsystem:
6080 Implemented event counters for each of the Fixed Events, the ACPI SCI
6081 (interrupt) itself, and control methods executed. Named
6082 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6084 should be useful for debugging and statistics.
6086 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6087 contents of the various event counters. Returns the current values for
6088 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6089 AcpiMethodCount. The interface can be expanded in the future if new
6091 are added. Device drivers should use this interface rather than access
6095 Fixed a problem with the FromBCD and ToBCD operators. With some
6097 the ShortDivide function worked incorrectly, causing problems with the
6099 functions with large input values. A truncation from 64-bit to 32-bit
6100 inadvertently occurred. Internal BZ 435. Lin Ming
6102 Fixed a problem with Index references passed as method arguments.
6104 passed as arguments to control methods were dereferenced immediately
6106 control was passed to the called method). The references are now
6108 passed directly to the called method. BZ 5389. Lin Ming
6110 Fixed a problem with CopyObject used in conjunction with the Index
6112 The reference was incorrectly dereferenced before the copy. The reference
6114 now correctly copied. BZ 5391. Lin Ming
6116 Fixed a problem with Control Method references within Package objects.
6118 references are now correctly generated. This completes the package
6119 construction overhaul that began in version 20071019.
6121 Example Code and Data Size: These are the sizes for the OS-independent
6122 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6123 debug version of the code includes the debug output trace mechanism and
6125 a much larger code and data size.
6128 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6129 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6131 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6132 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6135 2) iASL Compiler/Disassembler and Tools:
6137 The AcpiExec utility now installs handlers for all of the predefined
6138 Operation Region types. New types supported are: PCI_Config, CMOS, and
6141 Fixed a problem with the 64-bit version of AcpiExec where the extended
6143 bit) address fields for the DSDT and FACS within the FADT were not being
6144 used, causing truncation of the upper 32-bits of these addresses. Lin
6148 ----------------------------------------
6149 19 October 2007. Summary of changes for version 20071019:
6151 1) ACPI CA Core Subsystem:
6153 Fixed a problem with the Alias operator when the target of the alias is a
6154 named ASL operator that opens a new scope -- Scope, Device,
6156 Processor, and ThermalZone. In these cases, any children of the original
6157 operator could not be accessed via the alias, potentially causing
6159 AE_NOT_FOUND exceptions. (BZ 9067)
6161 Fixed a problem with the Package operator where all named references were
6162 created as object references and left otherwise unresolved. According to
6164 ACPI specification, a Package can only contain Data Objects or references
6166 control methods. The implication is that named references to Data Objects
6167 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6168 immediately upon package creation. This is the approach taken with this
6169 change. References to all other named objects (Methods, Devices, Scopes,
6170 etc.) are all now properly created as reference objects. (BZ 5328)
6172 Reverted a change to Notify handling that was introduced in version
6173 20070508. This version changed the Notify handling from asynchronous to
6174 fully synchronous (Device driver Notify handling with respect to the
6176 ASL operator). It was found that this change caused more problems than it
6177 solved and was removed by most users.
6179 Fixed a problem with the Increment and Decrement operators where the type
6181 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6184 Fixed a problem with the Load and LoadTable operators where the table
6185 location within the namespace was ignored. Instead, the table was always
6186 loaded into the root or current scope. Lin Ming.
6188 Fixed a problem with the Load operator when loading a table from a buffer
6189 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6191 Fixed a problem with the Debug object where a store of a DdbHandle
6193 object to the Debug object could cause a fault.
6195 Added a table checksum verification for the Load operator, in the case
6197 the load is from a buffer. (BZ 578).
6199 Implemented additional parameter validation for the LoadTable operator.
6201 length of the input strings SignatureString, OemIdString, and OemTableId
6203 now checked for maximum lengths. (BZ 582) Lin Ming.
6205 Example Code and Data Size: These are the sizes for the OS-independent
6206 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6207 debug version of the code includes the debug output trace mechanism and
6209 a much larger code and data size.
6212 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6213 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6215 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6216 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6219 2) iASL Compiler/Disassembler:
6221 Fixed a problem where if a single file was specified and the file did not
6222 exist, no error message was emitted. (Introduced with wildcard support in
6225 ----------------------------------------
6226 19 September 2007. Summary of changes for version 20070919:
6228 1) ACPI CA Core Subsystem:
6230 Designed and implemented new external interfaces to install and remove
6231 handlers for ACPI table-related events. Current events that are defined
6233 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6234 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6235 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6237 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6238 (acpi_serialized option on Linux) could cause some systems to hang during
6239 initialization. (Bob Moore) BZ 8171
6241 Fixed a problem where objects of certain types (Device, ThermalZone,
6242 Processor, PowerResource) can be not found if they are declared and
6243 referenced from within the same control method (Lin Ming) BZ 341
6245 Example Code and Data Size: These are the sizes for the OS-independent
6246 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6247 debug version of the code includes the debug output trace mechanism and
6249 a much larger code and data size.
6252 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6253 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6255 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6256 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6259 2) iASL Compiler/Disassembler:
6261 Implemented support to allow multiple files to be compiled/disassembled
6264 single invocation. This includes command line wildcard support for both
6266 Windows and Unix versions of the compiler. This feature simplifies the
6267 disassembly and compilation of multiple ACPI tables in a single
6270 ----------------------------------------
6271 08 May 2007. Summary of changes for version 20070508:
6273 1) ACPI CA Core Subsystem:
6275 Implemented a Microsoft compatibility design change for the handling of
6277 Notify AML operator. Previously, notify handlers were dispatched and
6278 executed completely asynchronously in a deferred thread. The new design
6279 still executes the notify handlers in a different thread, but the
6281 thread that executed the Notify() now waits at a synchronization point
6283 the notify handler to complete. Some machines depend on a synchronous
6285 operator in order to operate correctly.
6287 Implemented support to allow Package objects to be passed as method
6288 arguments to the external AcpiEvaluateObject interface. Previously, this
6289 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6290 implemented since there were no reserved control methods that required it
6293 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6295 contained invalid non-zero values in reserved fields could cause later
6296 failures because these fields have meaning in later revisions of the
6298 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6300 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6302 Fixed a problem where the Global Lock handle was not properly updated if
6304 thread that acquired the Global Lock via executing AML code then
6306 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6310 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6311 could be corrupted if the interrupt being removed was at the head of the
6312 list. Reported by Linn Crosetto.
6314 Example Code and Data Size: These are the sizes for the OS-independent
6315 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6316 debug version of the code includes the debug output trace mechanism and
6318 a much larger code and data size.
6321 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6322 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6324 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6325 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6327 ----------------------------------------
6328 20 March 2007. Summary of changes for version 20070320:
6330 1) ACPI CA Core Subsystem:
6332 Implemented a change to the order of interpretation and evaluation of AML
6333 operand objects within the AML interpreter. The interpreter now evaluates
6334 operands in the order that they appear in the AML stream (and the
6335 corresponding ASL code), instead of in the reverse order (after the
6337 operand list has been parsed). The previous behavior caused several
6339 incompatibilities with the Microsoft AML interpreter as well as being
6340 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6342 Implemented a change to the ACPI Global Lock support. All interfaces to
6344 global lock now allow the same thread to acquire the lock multiple times.
6345 This affects the AcpiAcquireGlobalLock external interface to the global
6347 as well as the internal use of the global lock to support AML fields -- a
6348 control method that is holding the global lock can now simultaneously
6350 AML fields that require global lock protection. Previously, in both
6352 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6354 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6355 Controller. There is no change to the behavior of the AML Acquire
6357 as this can already be used to acquire a mutex multiple times by the same
6358 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6360 Fixed a problem where invalid objects could be referenced in the AML
6361 Interpreter after error conditions. During operand evaluation, ensure
6363 the internal "Return Object" field is cleared on error and only valid
6364 pointers are stored there. Caused occasional access to deleted objects
6366 resulted in "large reference count" warning messages. Valery Podrezov.
6368 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6370 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6373 Fixed an internal problem with the handling of result objects on the
6374 interpreter result stack. BZ 7872. Valery Podrezov.
6376 Removed obsolete code that handled the case where AML_NAME_OP is the
6378 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6379 7874. Valery Podrezov.
6381 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6384 remnant from the previously discontinued 16-bit support.
6386 Example Code and Data Size: These are the sizes for the OS-independent
6387 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6388 debug version of the code includes the debug output trace mechanism and
6390 a much larger code and data size.
6393 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6394 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6396 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6397 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6399 ----------------------------------------
6400 26 January 2007. Summary of changes for version 20070126:
6402 1) ACPI CA Core Subsystem:
6404 Added the 2007 copyright to all module headers and signons. This affects
6405 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6408 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
6409 during a table load. A bad pointer was passed in the case where the DSDT
6411 overridden, causing a fault in this case.
6413 Example Code and Data Size: These are the sizes for the OS-independent
6414 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6415 debug version of the code includes the debug output trace mechanism and
6417 a much larger code and data size.
6420 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6421 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6423 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6424 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6426 ----------------------------------------
6427 15 December 2006. Summary of changes for version 20061215:
6429 1) ACPI CA Core Subsystem:
6431 Support for 16-bit ACPICA has been completely removed since it is no
6433 necessary and it clutters the code. All 16-bit macros, types, and
6434 conditional compiles have been removed, cleaning up and simplifying the
6436 across the entire subsystem. DOS support is no longer needed since the
6437 bootable Linux firmware kit is now available.
6439 The handler for the Global Lock is now removed during AcpiTerminate to
6440 enable a clean subsystem restart, via the implementation of the
6441 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
6444 Implemented enhancements to the multithreading support within the
6446 to enable improved multithreading debugging and evaluation of the
6450 Debugger: Enhanced the Statistics/Memory command to emit the total
6452 memory used during the execution, as well as the maximum memory consumed
6454 each of the various object types. (Valery Podrezov)
6456 Example Code and Data Size: These are the sizes for the OS-independent
6457 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6458 debug version of the code includes the debug output trace mechanism and
6460 a much larger code and data size.
6463 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6464 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6466 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6467 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6470 2) iASL Compiler/Disassembler and Tools:
6472 AcpiExec: Implemented a new option (-m) to display full memory use
6473 statistics upon subsystem/program termination. (Valery Podrezov)
6475 ----------------------------------------
6476 09 November 2006. Summary of changes for version 20061109:
6478 1) ACPI CA Core Subsystem:
6480 Optimized the Load ASL operator in the case where the source operand is
6482 operation region. Simply map the operation region memory, instead of
6483 performing a bytewise read. (Region must be of type SystemMemory, see
6486 Fixed the Load ASL operator for the case where the source operand is a
6487 region field. A buffer object is also allowed as the source operand. BZ
6490 Fixed a problem where the Load ASL operator allowed the source operand to
6492 an operation region of any type. It is now restricted to regions of type
6493 SystemMemory, as per the ACPI specification. BZ 481
6495 Additional cleanup and optimizations for the new Table Manager code.
6497 AcpiEnable will now fail if all of the required ACPI tables are not
6499 (FADT, FACS, DSDT). BZ 477
6501 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
6503 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
6504 manually optimized to be aligned and will not work if it is byte-packed.
6506 Example Code and Data Size: These are the sizes for the OS-independent
6507 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6508 debug version of the code includes the debug output trace mechanism and
6510 a much larger code and data size.
6513 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6514 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6516 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6517 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6520 2) iASL Compiler/Disassembler and Tools:
6522 Fixed a problem where the presence of the _OSI predefined control method
6523 within complex expressions could cause an internal compiler error.
6525 AcpiExec: Implemented full region support for multiple address spaces.
6526 SpaceId is now part of the REGION object. BZ 429
6528 ----------------------------------------
6529 11 October 2006. Summary of changes for version 20061011:
6531 1) ACPI CA Core Subsystem:
6533 Completed an AML interpreter performance enhancement for control method
6534 execution. Previously a 2-pass parse/execution, control methods are now
6535 completely parsed and executed in a single pass. This improves overall
6536 interpreter performance by ~25%, reduces code size, and reduces CPU stack
6537 use. (Valery Podrezov + interpreter changes in version 20051202 that
6538 eliminated namespace loading during the pass one parse.)
6540 Implemented _CID support for PCI Root Bridge detection. If the _HID does
6542 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
6544 obtained and also checked for an ID match.
6546 Implemented additional support for the PCI _ADR execution: upsearch until
6548 device scope is found before executing _ADR. This allows PCI_Config
6549 operation regions to be declared locally within control methods
6553 Fixed a problem with a possible race condition between threads executing
6554 AcpiWalkNamespace and the AML interpreter. This condition was removed by
6555 modifying AcpiWalkNamespace to (by default) ignore all temporary
6557 entries created during any concurrent control method execution. An
6558 additional namespace race condition is known to exist between
6559 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
6562 Restructured the AML ParseLoop function, breaking it into several
6563 subfunctions in order to reduce CPU stack use and improve
6567 AcpiGetHandle: Fix for parameter validation to detect invalid
6569 of prefix handle and pathname. BZ 478
6571 Example Code and Data Size: These are the sizes for the OS-independent
6572 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6573 debug version of the code includes the debug output trace mechanism and
6575 a much larger code and data size.
6578 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6579 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6581 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6582 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6584 2) iASL Compiler/Disassembler and Tools:
6586 Ported the -g option (get local ACPI tables) to the new ACPICA Table
6588 to restore original behavior.
6590 ----------------------------------------
6591 27 September 2006. Summary of changes for version 20060927:
6593 1) ACPI CA Core Subsystem:
6595 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
6596 These functions now use a spinlock for mutual exclusion and the interrupt
6597 level indication flag is not needed.
6599 Fixed a problem with the Global Lock where the lock could appear to be
6600 obtained before it is actually obtained. The global lock semaphore was
6601 inadvertently created with one unit instead of zero units. (BZ 464)
6605 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
6607 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
6609 Example Code and Data Size: These are the sizes for the OS-independent
6610 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6611 debug version of the code includes the debug output trace mechanism and
6613 a much larger code and data size.
6616 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6617 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6619 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6620 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6623 2) iASL Compiler/Disassembler and Tools:
6625 Fixed a compilation problem with the pre-defined Resource Descriptor
6627 names where an "object does not exist" error could be incorrectly
6629 if the parent ResourceTemplate pathname places the template within a
6630 different namespace scope than the current scope. (BZ 7212)
6632 Fixed a problem where the compiler could hang after syntax errors
6634 in an ElseIf construct. (BZ 453)
6636 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
6637 operator. An incorrect output filename was produced when this parameter
6639 a null string (""). Now, the original input filename is used as the AML
6640 output filename, with an ".aml" extension.
6642 Implemented a generic batch command mode for the AcpiExec utility
6644 any AML debugger command) (Valery Podrezov).
6646 ----------------------------------------
6647 12 September 2006. Summary of changes for version 20060912:
6649 1) ACPI CA Core Subsystem:
6651 Enhanced the implementation of the "serialized mode" of the interpreter
6652 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
6653 specified, instead of creating a serialization semaphore per control
6655 the interpreter lock is simply no longer released before a blocking
6656 operation during control method execution. This effectively makes the AML
6657 Interpreter single-threaded. The overhead of a semaphore per-method is
6660 Fixed a regression where an error was no longer emitted if a control
6662 attempts to create 2 objects of the same name. This once again returns
6663 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
6665 will dynamically serialize the control method to possible prevent future
6668 Integrated a fix for a problem with PCI Express HID detection in the PCI
6669 Config Space setup procedure. (BZ 7145)
6671 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
6672 AcpiHwInitialize function - the FADT registers are now validated when the
6675 Added two new warnings during FADT verification - 1) if the FADT is
6677 than the largest known FADT version, and 2) if there is a mismatch
6680 32-bit block address and the 64-bit X counterpart (when both are non-
6683 Example Code and Data Size: These are the sizes for the OS-independent
6684 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6685 debug version of the code includes the debug output trace mechanism and
6687 a much larger code and data size.
6690 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6691 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6693 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6694 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6697 2) iASL Compiler/Disassembler and Tools:
6699 Fixed a problem with the implementation of the Switch() operator where
6701 temporary variable was declared too close to the actual Switch, instead
6703 at method level. This could cause a problem if the Switch() operator is
6704 within a while loop, causing an error on the second iteration. (BZ 460)
6706 Disassembler - fix for error emitted for unknown type for target of scope
6707 operator. Now, ignore it and continue.
6709 Disassembly of an FADT now verifies the input FADT and reports any errors
6710 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
6712 Disassembly of raw data buffers with byte initialization data now
6714 each output line with the current buffer offset.
6716 Disassembly of ASF! table now includes all variable-length data fields at
6717 the end of some of the subtables.
6719 The disassembler now emits a comment if a buffer appears to be a
6720 ResourceTemplate, but cannot be disassembled as such because the EndTag
6722 not appear at the very end of the buffer.
6724 AcpiExec - Added the "-t" command line option to enable the serialized
6726 of the AML interpreter.
6728 ----------------------------------------
6729 31 August 2006. Summary of changes for version 20060831:
6731 1) ACPI CA Core Subsystem:
6733 Miscellaneous fixes for the Table Manager:
6734 - Correctly initialize internal common FADT for all 64-bit "X" fields
6735 - Fixed a couple table mapping issues during table load
6736 - Fixed a couple alignment issues for IA64
6737 - Initialize input array to zero in AcpiInitializeTables
6738 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
6741 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
6743 immediately disabled to prevent the waking GPE from firing again and to
6744 prevent other wake GPEs from interrupting the wake process.
6746 Added the AcpiGpeCount global that tracks the number of processed GPEs,
6748 be used for debugging systems with a large number of ACPI interrupts.
6750 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
6751 both the ACPICA headers and the disassembler.
6753 Example Code and Data Size: These are the sizes for the OS-independent
6754 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6755 debug version of the code includes the debug output trace mechanism and
6757 a much larger code and data size.
6760 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6761 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6763 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6764 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6767 2) iASL Compiler/Disassembler and Tools:
6769 Disassembler support for the DMAR ACPI table.
6771 ----------------------------------------
6772 23 August 2006. Summary of changes for version 20060823:
6774 1) ACPI CA Core Subsystem:
6776 The Table Manager component has been completely redesigned and
6777 reimplemented. The new design is much simpler, and reduces the overall
6779 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
6781 now possible to obtain the ACPI tables very early during kernel
6782 initialization, even before dynamic memory management is initialized.
6783 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
6785 Obsolete ACPICA interfaces:
6787 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
6790 - AcpiLoadTable: Not needed.
6791 - AcpiUnloadTable: Not needed.
6793 New ACPICA interfaces:
6795 - AcpiInitializeTables: Must be called before the table manager can be
6797 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
6798 allocated memory after it becomes available.
6799 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
6803 Other ACPICA changes:
6805 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
6807 AcpiOsUnmapMemory to free this mapping.
6808 - AcpiGetTable returns the actual mapped table. The mapping is managed
6809 internally and must not be deleted by the caller. Use of this interface
6810 causes no additional dynamic memory allocation.
6811 - AcpiFindRootPointer: Support for physical addressing has been
6813 it appeared to be unused.
6814 - The interface to AcpiOsMapMemory has changed to be consistent with the
6815 other allocation interfaces.
6816 - The interface to AcpiOsGetRootPointer has changed to eliminate
6819 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
6821 bit platforms. Was previously 64 bits on all platforms.
6822 - The interface to the ACPI Global Lock acquire/release macros have
6824 slightly since ACPICA no longer keeps a local copy of the FACS with a
6825 constructed pointer to the actual global lock.
6827 Porting to the new table manager:
6829 - AcpiInitializeTables: Must be called once, and can be called anytime
6830 during the OS initialization process. It allows the host to specify an
6832 of memory to be used to store the internal version of the RSDT/XSDT (root
6833 table). This allows the host to access ACPI tables before memory
6835 is initialized and running.
6836 - AcpiReallocateRootTable: Can be called after memory management is
6838 to copy the root table to a dynamically allocated array, freeing up the
6839 scratch memory specified in the call to AcpiInitializeTables.
6840 - AcpiSubsystemInitialize: This existing interface is independent of the
6841 Table Manager, and does not have to be called before the Table Manager
6843 be used, it only must be called before the rest of ACPICA can be used.
6844 - ACPI Tables: Some changes have been made to the names and structure of
6846 actbl.h and actbl1.h header files and may require changes to existing
6848 For example, bitfields have been completely removed because of their lack
6850 portability across C compilers.
6851 - Update interfaces to the Global Lock acquire/release macros if local
6852 versions are used. (see acwin.h)
6854 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
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: 80.7K Code, 17.9K Data, 98.6K Total
6866 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6868 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6869 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6872 2) iASL Compiler/Disassembler and Tools:
6874 No changes for this release.
6876 ----------------------------------------
6877 21 July 2006. Summary of changes for version 20060721:
6879 1) ACPI CA Core Subsystem:
6881 The full source code for the ASL test suite used to validate the iASL
6882 compiler and the ACPICA core subsystem is being released with the ACPICA
6883 source for the first time. The source is contained in a separate package
6885 consists of over 1100 files that exercise all ASL/AML operators. The
6887 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
6891 Completed a new design and implementation for support of the ACPI Global
6892 Lock. On the OS side, the global lock is now treated as a standard AML
6893 mutex. Previously, multiple OS threads could "acquire" the global lock
6894 simultaneously. However, this could cause the BIOS to be starved out of
6896 lock - especially in cases such as the Embedded Controller driver where
6897 there is a tight coupling between the OS and the BIOS.
6899 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
6900 The Global Lock interrupt handler no longer queues the execution of a
6901 separate thread to signal the global lock semaphore. Instead, the
6903 is signaled directly from the interrupt handler.
6905 Implemented support within the AML interpreter for package objects that
6906 contain a larger AML length (package list length) than the package
6908 count. In this case, the length of the package is truncated to match the
6909 package element count. Some BIOS code apparently modifies the package
6911 on the fly, and this change supports this behavior. Provides
6913 with the MS AML interpreter. (With assistance from Fiodor Suietov)
6915 Implemented a temporary fix for the BankValue parameter of a Bank Field
6917 support all constant values, now including the Zero and One opcodes.
6918 Evaluation of this parameter must eventually be converted to a full
6920 evaluation. A not-implemented error is now returned (temporarily) for
6922 constant values for this parameter.
6924 Fixed problem reports (Fiodor Suietov) integrated:
6925 - Fix for premature object deletion after CopyObject on Operation Region
6929 Example Code and Data Size: These are the sizes for the OS-independent
6930 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6931 debug version of the code includes the debug output trace mechanism and
6933 a much larger code and data size.
6936 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
6937 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
6939 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6940 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6943 2) iASL Compiler/Disassembler and Tools:
6945 No changes for this release.
6947 ----------------------------------------
6948 07 July 2006. Summary of changes for version 20060707:
6950 1) ACPI CA Core Subsystem:
6952 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
6953 that do not allow the initialization of address pointers within packed
6954 structures - even though the hardware itself may support misaligned
6955 transfers. Some of the debug data structures are packed by default to
6958 Added an error message for the case where AcpiOsGetThreadId() returns
6960 A non-zero value is required by the core ACPICA code to ensure the proper
6961 operation of AML mutexes and recursive control methods.
6963 The DSDT is now the only ACPI table that determines whether the AML
6964 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
6966 the hooks for per-table 32/64 switching have been removed from the code.
6968 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
6970 Fixed a possible leak of an OwnerID in the error path of
6971 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
6972 deletion to a single place in AcpiTbUninstallTable to correct possible
6974 when using the AcpiTbDeleteTablesByType interface (with assistance from
6977 Fixed a problem with Serialized control methods where the semaphore
6978 associated with the method could be over-signaled after multiple method
6981 Fixed two issues with the locking of the internal namespace data
6983 Both the Unload() operator and AcpiUnloadTable interface now lock the
6984 namespace during the namespace deletion associated with the table unload
6985 (with assistance from Linn Crosetto.)
6987 Fixed problem reports (Valery Podrezov) integrated:
6988 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
6990 Fixed problem reports (Fiodor Suietov) integrated:
6991 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
6992 - On Address Space handler deletion, needless deactivation call (BZ 374)
6993 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
6995 - Possible memory leak, Notify sub-objects of Processor, Power,
6998 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
6999 - Minimum Length of RSDT should be validated (BZ 379)
7000 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7002 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7006 Example Code and Data Size: These are the sizes for the OS-independent
7007 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7008 debug version of the code includes the debug output trace mechanism and
7010 a much larger code and data size.
7013 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7014 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7016 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7017 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7020 2) iASL Compiler/Disassembler and Tools:
7022 Fixed problem reports:
7023 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7026 ----------------------------------------
7027 23 June 2006. Summary of changes for version 20060623:
7029 1) ACPI CA Core Subsystem:
7031 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7032 allows the type to be customized to the host OS for improved efficiency
7033 (since a spinlock is usually a very small object.)
7035 Implemented support for "ignored" bits in the ACPI registers. According
7037 the ACPI specification, these bits should be preserved when writing the
7038 registers via a read/modify/write cycle. There are 3 bits preserved in
7040 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7042 Implemented the initial deployment of new OSL mutex interfaces. Since
7044 host operating systems have separate mutex and semaphore objects, this
7045 feature was requested. The base code now uses mutexes (and the new mutex
7046 interfaces) wherever a binary semaphore was used previously. However, for
7047 the current release, the mutex interfaces are defined as macros to map
7049 to the existing semaphore interfaces. Therefore, no OSL changes are
7051 at this time. (See acpiosxf.h)
7053 Fixed several problems with the support for the control method SyncLevel
7054 parameter. The SyncLevel now works according to the ACPI specification
7056 in concert with the Mutex SyncLevel parameter, since the current
7058 is a property of the executing thread. Mutual exclusion for control
7060 is now implemented with a mutex instead of a semaphore.
7062 Fixed three instances of the use of the C shift operator in the bitfield
7063 support code (exfldio.c) to avoid the use of a shift value larger than
7065 target data width. The behavior of C compilers is undefined in this case
7067 can cause unpredictable results, and therefore the case must be detected
7069 avoided. (Fiodor Suietov)
7071 Added an info message whenever an SSDT or OEM table is loaded dynamically
7072 via the Load() or LoadTable() ASL operators. This should improve
7074 capability since it will show exactly what tables have been loaded
7076 the tables present in the RSDT/XSDT.)
7078 Example Code and Data Size: These are the sizes for the OS-independent
7079 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7080 debug version of the code includes the debug output trace mechanism and
7082 a much larger code and data size.
7085 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7086 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7088 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7089 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7092 2) iASL Compiler/Disassembler and Tools:
7094 No changes for this release.
7096 ----------------------------------------
7097 08 June 2006. Summary of changes for version 20060608:
7099 1) ACPI CA Core Subsystem:
7101 Converted the locking mutex used for the ACPI hardware to a spinlock.
7103 change should eliminate all problems caused by attempting to acquire a
7104 semaphore at interrupt level, and it means that all ACPICA external
7105 interfaces that directly access the ACPI hardware can be safely called
7107 interrupt level. OSL code that implements the semaphore interfaces should
7109 able to eliminate any workarounds for being called at interrupt level.
7111 Fixed a regression introduced in 20060526 where the ACPI device
7112 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7114 did not have an optional _INI method.
7116 Fixed an IndexField issue where a write to the Data Register should be
7117 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7121 Fixed problem reports (Valery Podrezov) integrated:
7122 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7124 Fixed problem reports (Fiodor Suietov) integrated:
7125 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7127 Removed four global mutexes that were obsolete and were no longer being
7130 Example Code and Data Size: These are the sizes for the OS-independent
7131 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7132 debug version of the code includes the debug output trace mechanism and
7134 a much larger code and data size.
7137 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7138 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7140 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7141 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7144 2) iASL Compiler/Disassembler and Tools:
7146 Fixed a fault when using -g option (get tables from registry) on Windows
7149 Fixed problem reports integrated:
7150 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7151 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7153 - Global table revision override (-r) is ignored (BZ 413)
7155 ----------------------------------------
7156 26 May 2006. Summary of changes for version 20060526:
7158 1) ACPI CA Core Subsystem:
7160 Restructured, flattened, and simplified the internal interfaces for
7161 namespace object evaluation - resulting in smaller code, less CPU stack
7163 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7165 Fixed a problem with the CopyObject operator where the first parameter
7167 not typed correctly for the parser, interpreter, compiler, and
7169 Caused various errors and unexpected behavior.
7171 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7172 produced incorrect results with some C compilers. Since the behavior of C
7173 compilers when the shift value is larger than the datatype width is
7174 apparently not well defined, the interpreter now detects this condition
7176 simply returns zero as expected in all such cases. (BZ 395)
7178 Fixed problem reports (Valery Podrezov) integrated:
7179 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7180 - Allow interpreter to handle nested method declarations (BZ 5361)
7182 Fixed problem reports (Fiodor Suietov) integrated:
7183 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7185 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7187 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7188 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7189 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7190 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7191 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7192 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7193 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7195 - Status of the Global Initialization Handler call not used (BZ 366)
7196 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7198 Example Code and Data Size: These are the sizes for the OS-independent
7199 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7200 debug version of the code includes the debug output trace mechanism and
7202 a much larger code and data size.
7205 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7206 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7208 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7209 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7212 2) iASL Compiler/Disassembler and Tools:
7214 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7215 namespace identifiers with no collision with existing resource descriptor
7216 macro names. This provides compatibility with other ASL compilers and is
7217 most useful for disassembly/recompilation of existing tables without
7219 errors. (With assistance from Thomas Renninger)
7221 Disassembler: fixed an incorrect disassembly problem with the
7222 DataTableRegion and CopyObject operators. Fixed a possible fault during
7223 disassembly of some Alias operators.
7225 ----------------------------------------
7226 12 May 2006. Summary of changes for version 20060512:
7228 1) ACPI CA Core Subsystem:
7230 Replaced the AcpiOsQueueForExecution interface with a new interface named
7231 AcpiOsExecute. The major difference is that the new interface does not
7233 a Priority parameter, this appeared to be useless and has been replaced
7236 Type parameter. The Type tells the host what type of execution is being
7237 requested, such as global lock handler, notify handler, GPE handler, etc.
7238 This allows the host to queue and execute the request as appropriate for
7240 request type, possibly using different work queues and different
7242 for the various request types. This enables fixes for multithreading
7243 deadlock problems such as BZ #5534, and will require changes to all
7245 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7247 Fixed a possible memory leak associated with the support for the so-
7249 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7252 Fixed a problem with the Load() operator where a table load from an
7253 operation region could overwrite an internal table buffer by up to 7
7255 and cause alignment faults on IPF systems. (With assistance from Luming
7258 Example Code and Data Size: These are the sizes for the OS-independent
7259 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7260 debug version of the code includes the debug output trace mechanism and
7262 a much larger code and data size.
7265 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7266 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7268 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7269 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7273 2) iASL Compiler/Disassembler and Tools:
7275 Disassembler: Implemented support to cross reference the internal
7277 and automatically generate ASL External() statements for symbols not
7279 within the current table being disassembled. This will simplify the
7280 disassembly and recompilation of interdependent tables such as SSDTs
7282 these statements will no longer have to be added manually.
7284 Disassembler: Implemented experimental support to automatically detect
7285 invocations of external control methods and generate appropriate
7287 statements. This is problematic because the AML cannot be correctly
7289 until the number of arguments for each control method is known.
7291 standalone method invocations and invocations as the source operand of a
7292 Store() statement are supported.
7294 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7295 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7296 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7297 more readable and likely closer to the original ASL source.
7299 ----------------------------------------
7300 21 April 2006. Summary of changes for version 20060421:
7302 1) ACPI CA Core Subsystem:
7304 Removed a device initialization optimization introduced in 20051216 where
7305 the _STA method was not run unless an _INI was also present for the same
7306 device. This optimization could cause problems because it could allow
7308 methods to be run within a not-present device subtree. (If a not-present
7309 device had no _INI, _STA would not be run, the not-present status would
7311 be discovered, and the children of the device would be incorrectly
7314 Implemented a new _STA optimization where namespace subtrees that do not
7315 contain _INI are identified and ignored during device initialization.
7316 Selectively running _STA can significantly improve boot time on large
7317 machines (with assistance from Len Brown.)
7319 Implemented support for the device initialization case where the returned
7320 _STA flags indicate a device not-present but functioning. In this case,
7322 is not run, but the device children are examined for presence, as per the
7325 Implemented an additional change to the IndexField support in order to
7326 conform to MS behavior. The value written to the Index Register is not
7327 simply a byte offset, it is a byte offset in units of the access width of
7328 the parent Index Field. (Fiodor Suietov)
7330 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7331 interface is called during the creation of all AML operation regions, and
7332 allows the host OS to exert control over what addresses it will allow the
7333 AML code to access. Operation Regions whose addresses are disallowed will
7334 cause a runtime exception when they are actually accessed (will not
7336 or abort table loading.) See oswinxf or osunixxf for an example
7339 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7340 interface allows the host OS to match the various "optional"
7341 interface/behavior strings for the _OSI predefined control method as
7342 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7343 for an example implementation.
7345 Restructured and corrected various problems in the exception handling
7347 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7348 (with assistance from Takayoshi Kochi.)
7350 Modified the Linux source converter to ignore quoted string literals
7352 converting identifiers from mixed to lower case. This will correct
7354 with the disassembler and other areas where such strings must not be
7357 The ACPI_FUNCTION_* macros no longer require quotes around the function
7358 name. This allows the Linux source converter to convert the names, now
7360 the converter ignores quoted strings.
7362 Example Code and Data Size: These are the sizes for the OS-independent
7363 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7364 debug version of the code includes the debug output trace mechanism and
7366 a much larger code and data size.
7370 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7371 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7373 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7374 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7377 2) iASL Compiler/Disassembler and Tools:
7379 Implemented 3 new warnings for iASL, and implemented multiple warning
7383 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7385 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7386 check for the possible timeout, a warning is issued.
7388 2) Useless operators: If an ASL operator does not specify an optional
7390 operand and it also does not use the function return value from the
7391 operator, a warning is issued since the operator effectively does
7394 3) Unreferenced objects: If a namespace object is created, but never
7395 referenced, a warning is issued. This is a warning level 2 since there
7397 cases where this is ok, such as when a secondary table is loaded that
7399 the unreferenced objects. Even so, care is taken to only flag objects
7401 don't look like they will ever be used. For example, the reserved methods
7402 (starting with an underscore) are usually not referenced because it is
7403 expected that the OS will invoke them.
7405 ----------------------------------------
7406 31 March 2006. Summary of changes for version 20060331:
7408 1) ACPI CA Core Subsystem:
7410 Implemented header file support for the following additional ACPI tables:
7411 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
7413 all current and known ACPI tables are now defined in the ACPICA headers
7415 are available for use by device drivers and other software.
7417 Implemented support to allow tables that contain ACPI names with invalid
7418 characters to be loaded. Previously, this would cause the table load to
7419 fail, but since there are several known cases of such tables on existing
7420 machines, this change was made to enable ACPI support for them. Also,
7422 matches the behavior of the Microsoft ACPI implementation.
7424 Fixed a couple regressions introduced during the memory optimization in
7426 20060317 release. The namespace node definition required additional
7427 reorganization and an internal datatype that had been changed to 8-bit
7429 restored to 32-bit. (Valery Podrezov)
7431 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
7432 could be passed through to AcpiOsReleaseObject which is unexpected. Such
7433 null pointers are now trapped and ignored, matching the behavior of the
7434 previous implementation before the deployment of AcpiOsReleaseObject.
7435 (Valery Podrezov, Fiodor Suietov)
7437 Fixed a memory mapping leak during the deletion of a SystemMemory
7439 region where a cached memory mapping was not deleted. This became a
7440 noticeable problem for operation regions that are defined within
7442 used control methods. (Dana Meyers)
7444 Reorganized the ACPI table header files into two main files: one for the
7445 ACPI tables consumed by the ACPICA core, and another for the
7447 ACPI tables that are consumed by the drivers and other software. The
7449 FADT definitions were merged into one common section and three different
7450 tables (ACPI 1.0, 1.0+, and 2.0)
7452 Example Code and Data Size: These are the sizes for the OS-independent
7453 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7454 debug version of the code includes the debug output trace mechanism and
7456 a much larger code and data size.
7459 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7460 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7462 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7463 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7466 2) iASL Compiler/Disassembler and Tools:
7468 Disassembler: Implemented support to decode and format all non-AML ACPI
7469 tables (tables other than DSDTs and SSDTs.) This includes the new tables
7470 added to the ACPICA headers, therefore all current and known ACPI tables
7474 Disassembler: The change to allow ACPI names with invalid characters also
7475 enables the disassembly of such tables. Invalid characters within names
7477 changed to '*' to make the name printable; the iASL compiler will still
7478 generate an error for such names, however, since this is an invalid ACPI
7481 Implemented an option for AcpiXtract (-a) to extract all tables found in
7483 input file. The default invocation extracts only the DSDTs and SSDTs.
7485 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
7486 makefile for the AcpiXtract utility.
7488 ----------------------------------------
7489 17 March 2006. Summary of changes for version 20060317:
7491 1) ACPI CA Core Subsystem:
7493 Implemented the use of a cache object for all internal namespace nodes.
7494 Since there are about 1000 static nodes in a typical system, this will
7495 decrease memory use for cache implementations that minimize per-
7497 overhead (such as a slab allocator.)
7499 Removed the reference count mechanism for internal namespace nodes, since
7501 was deemed unnecessary. This reduces the size of each namespace node by
7502 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
7504 and 32 bytes for the 64-bit case.
7506 Optimized several internal data structures to reduce object size on 64-
7508 platforms by packing data within the 64-bit alignment. This includes the
7509 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
7510 instances corresponding to the namespace objects.
7512 Added two new strings for the predefined _OSI method: "Windows 2001.1
7516 Split the allocation tracking mechanism out to a separate file, from
7517 utalloc.c to uttrack.c. This mechanism appears to be only useful for
7518 application-level code. Kernels may wish to not include uttrack.c in
7521 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
7523 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
7526 Code and Data Size: These are the sizes for the acpica.lib produced by
7528 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7530 driver or OSPM code. The debug version of the code includes the debug
7532 trace mechanism and has a much larger code and data size. Note that these
7533 values will vary depending on the efficiency of the compiler and the
7534 compiler options used during generation.
7537 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7538 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7540 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7541 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7544 2) iASL Compiler/Disassembler and Tools:
7546 Implemented an ANSI C version of the acpixtract utility. This version
7548 automatically extract the DSDT and all SSDTs from the input acpidump text
7549 file and dump the binary output to separate files. It can also display a
7550 summary of the input file including the headers for each table found and
7551 will extract any single ACPI table, with any signature. (See
7552 source/tools/acpixtract)
7554 ----------------------------------------
7555 10 March 2006. Summary of changes for version 20060310:
7557 1) ACPI CA Core Subsystem:
7559 Tagged all external interfaces to the subsystem with the new
7560 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
7562 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
7563 macro. The default definition is NULL.
7565 Added the ACPI_THREAD_ID type for the return value from
7567 This allows the host to define this as necessary to simplify kernel
7568 integration. The default definition is ACPI_NATIVE_UINT.
7570 Fixed two interpreter problems related to error processing, the deletion
7572 objects, and placing invalid pointers onto the internal operator result
7573 stack. BZ 6028, 6151 (Valery Podrezov)
7575 Increased the reference count threshold where a warning is emitted for
7577 reference counts in order to eliminate unnecessary warnings on systems
7579 large namespaces (especially 64-bit.) Increased the value from 0x400 to
7582 Due to universal disagreement as to the meaning of the 'c' in the
7584 function, the ACPI_MEM_CALLOCATE macro has been renamed to
7585 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
7586 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
7589 Code and Data Size: These are the sizes for the acpica.lib produced by
7591 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7593 driver or OSPM code. The debug version of the code includes the debug
7595 trace mechanism and has a much larger code and data size. Note that these
7596 values will vary depending on the efficiency of the compiler and the
7597 compiler options used during generation.
7600 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7601 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7603 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7604 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7607 2) iASL Compiler/Disassembler:
7609 Disassembler: implemented support for symbolic resource descriptor
7610 references. If a CreateXxxxField operator references a fixed offset
7613 resource descriptor, a name is assigned to the descriptor and the offset
7615 translated to the appropriate resource tag and pathname. The addition of
7616 this support brings the disassembled code very close to the original ASL
7617 source code and helps eliminate run-time errors when the disassembled
7619 is modified (and recompiled) in such a way as to invalidate the original
7622 Implemented support for a Descriptor Name as the last parameter to the
7624 Register() macro. This parameter was inadvertently left out of the ACPI
7625 specification, and will be added for ACPI 3.0b.
7627 Fixed a problem where the use of the "_OSI" string (versus the full path
7628 "\_OSI") caused an internal compiler error. ("No back ptr to op")
7630 Fixed a problem with the error message that occurs when an invalid string
7632 used for a _HID object (such as one with an embedded asterisk:
7634 The correct message is now displayed.
7636 ----------------------------------------
7637 17 February 2006. Summary of changes for version 20060217:
7639 1) ACPI CA Core Subsystem:
7641 Implemented a change to the IndexField support to match the behavior of
7643 Microsoft AML interpreter. The value written to the Index register is now
7645 byte offset, no longer an index based upon the width of the Data
7647 This should fix IndexField problems seen on some machines where the Data
7648 register is not exactly one byte wide. The ACPI specification will be
7649 clarified on this point.
7651 Fixed a problem where several resource descriptor types could overrun the
7652 internal descriptor buffer due to size miscalculation: VendorShort,
7653 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
7654 affect all platforms.
7656 Fixed a problem where individual resource descriptors were misaligned
7658 the internal buffer, causing alignment faults on IA64 platforms.
7660 Code and Data Size: These are the sizes for the acpica.lib produced by
7662 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7664 driver or OSPM code. The debug version of the code includes the debug
7666 trace mechanism and has a much larger code and data size. Note that these
7667 values will vary depending on the efficiency of the compiler and the
7668 compiler options used during generation.
7671 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7672 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7674 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7675 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7678 2) iASL Compiler/Disassembler:
7680 Implemented support for new reserved names: _WDG and _WED are Microsoft
7681 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
7682 defined method (Throttling Depth Limit.)
7684 Fixed a problem where a zero-length VendorShort or VendorLong resource
7685 descriptor was incorrectly emitted as a descriptor of length one.
7687 ----------------------------------------
7688 10 February 2006. Summary of changes for version 20060210:
7690 1) ACPI CA Core Subsystem:
7692 Removed a couple of extraneous ACPI_ERROR messages that appeared during
7693 normal execution. These became apparent after the conversion from
7696 Fixed a problem where the CreateField operator could hang if the BitIndex
7698 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
7700 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
7701 failed with an exception. This also fixes a couple of related RefOf and
7702 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
7704 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
7706 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
7710 Implemented a memory cleanup at the end of the execution of each
7712 of an AML While() loop, preventing the accumulation of outstanding
7714 (Valery Podrezov, BZ 5427)
7716 Eliminated a chunk of duplicate code in the object resolution code.
7720 Fixed several warnings during the 64-bit code generation.
7722 The AcpiSrc source code conversion tool now inserts one line of
7724 after an if() statement that is followed immediately by a comment,
7726 readability of the Linux code.
7728 Code and Data Size: The current and previous library sizes for the core
7729 subsystem are shown below. These are the code and data sizes for the
7730 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7732 values do not include any ACPI driver or OSPM code. The debug version of
7734 code includes the debug output trace mechanism and has a much larger code
7735 and data size. Note that these values will vary depending on the
7737 of the compiler and the compiler options used during generation.
7740 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7741 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7743 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7744 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7747 2) iASL Compiler/Disassembler:
7749 Fixed a problem with the disassembly of a BankField operator with a
7751 expression for the BankValue parameter.
7753 ----------------------------------------
7754 27 January 2006. Summary of changes for version 20060127:
7756 1) ACPI CA Core Subsystem:
7758 Implemented support in the Resource Manager to allow unresolved
7760 references within resource package objects for the _PRT method. This
7762 is in addition to the previously implemented unresolved reference support
7763 within the AML parser. If the interpreter slack mode is enabled, these
7764 unresolved references will be passed through to the caller as a NULL
7768 Implemented and deployed new macros and functions for error and warning
7769 messages across the subsystem. These macros are simpler and generate less
7770 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
7771 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
7772 macros remain defined to allow ACPI drivers time to migrate to the new
7775 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
7777 Acquire/Release Lock OSL interfaces.
7779 Fixed a problem where Alias ASL operators are sometimes not correctly
7780 resolved, in both the interpreter and the iASL compiler.
7782 Fixed several problems with the implementation of the
7783 ConcatenateResTemplate
7784 ASL operator. As per the ACPI specification, zero length buffers are now
7785 treated as a single EndTag. One-length buffers always cause a fatal
7786 exception. Non-zero length buffers that do not end with a full 2-byte
7788 cause a fatal exception.
7790 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
7791 interface. (With assistance from Thomas Renninger)
7793 Code and Data Size: The current and previous library sizes for the core
7794 subsystem are shown below. These are the code and data sizes for the
7795 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7797 values do not include any ACPI driver or OSPM code. The debug version of
7799 code includes the debug output trace mechanism and has a much larger code
7800 and data size. Note that these values will vary depending on the
7802 of the compiler and the compiler options used during generation.
7805 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7806 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7808 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7809 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7812 2) iASL Compiler/Disassembler:
7814 Fixed an internal error that was generated for any forward references to
7818 ----------------------------------------
7819 13 January 2006. Summary of changes for version 20060113:
7821 1) ACPI CA Core Subsystem:
7823 Added 2006 copyright to all module headers and signons. This affects
7824 virtually every file in the ACPICA core subsystem, iASL compiler, and the
7827 Enhanced the ACPICA error reporting in order to simplify user migration
7829 the non-debug version of ACPICA. Replaced all instances of the
7830 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
7832 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
7833 respectively. This preserves all error and warning messages in the non-
7835 version of the ACPICA code (this has been referred to as the "debug lite"
7836 option.) Over 200 cases were converted to create a total of over 380
7837 error/warning messages across the ACPICA code. This increases the code
7839 data size of the default non-debug version of the code somewhat (about
7841 but all error/warning reporting may be disabled if desired (and code
7842 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
7843 configuration option. The size of the debug version of ACPICA remains
7847 Fixed a memory leak within the AML Debugger "Set" command. One object was
7848 not properly deleted for every successful invocation of the command.
7850 Code and Data Size: The current and previous library sizes for the core
7851 subsystem are shown below. These are the code and data sizes for the
7852 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7854 values do not include any ACPI driver or OSPM code. The debug version of
7856 code includes the debug output trace mechanism and has a much larger code
7857 and data size. Note that these values will vary depending on the
7859 of the compiler and the compiler options used during generation.
7862 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7863 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7865 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7866 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7869 2) iASL Compiler/Disassembler:
7871 The compiler now officially supports the ACPI 3.0a specification that was
7872 released on December 30, 2005. (Specification is available at
7875 ----------------------------------------
7876 16 December 2005. Summary of changes for version 20051216:
7878 1) ACPI CA Core Subsystem:
7880 Implemented optional support to allow unresolved names within ASL Package
7881 objects. A null object is inserted in the package when a named reference
7882 cannot be located in the current namespace. Enabled via the interpreter
7883 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
7885 that contain such code.
7887 Implemented an optimization to the initialization sequence that can
7889 boot time. During ACPI device initialization, the _STA method is now run
7891 and only if the _INI method exists. The _STA method is used to determine
7893 the device is present; An _INI can only be run if _STA returns present,
7895 it is a waste of time to run the _STA method if the _INI does not exist.
7896 (Prototype and assistance from Dong Wei)
7898 Implemented use of the C99 uintptr_t for the pointer casting macros if it
7900 available in the current compiler. Otherwise, the default (void *) cast
7904 Fixed some possible memory leaks found within the execution path of the
7905 Break, Continue, If, and CreateField operators. (Valery Podrezov)
7907 Fixed a problem introduced in the 20051202 release where an exception is
7908 generated during method execution if a control method attempts to declare
7911 Moved resource descriptor string constants that are used by both the AML
7912 disassembler and AML debugger to the common utilities directory so that
7913 these components are independent.
7915 Implemented support in the AcpiExec utility (-e switch) to globally
7917 exceptions during control method execution (method is not aborted.)
7919 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
7922 Code and Data Size: The current and previous library sizes for the core
7923 subsystem are shown below. These are the code and data sizes for the
7924 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7926 values do not include any ACPI driver or OSPM code. The debug version of
7928 code includes the debug output trace mechanism and has a much larger code
7929 and data size. Note that these values will vary depending on the
7931 of the compiler and the compiler options used during generation.
7934 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7935 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
7937 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7938 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7941 2) iASL Compiler/Disassembler:
7943 Fixed a problem where a CPU stack overflow fault could occur if a
7945 method call was made from within a Return statement.
7947 ----------------------------------------
7948 02 December 2005. Summary of changes for version 20051202:
7950 1) ACPI CA Core Subsystem:
7952 Modified the parsing of control methods to no longer create namespace
7953 objects during the first pass of the parse. Objects are now created only
7954 during the execute phase, at the moment the namespace creation operator
7956 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
7958 should eliminate ALREADY_EXISTS exceptions seen on some machines where
7959 reentrant control methods are protected by an AML mutex. The mutex will
7961 correctly block multiple threads from attempting to create the same
7965 Increased the number of available Owner Ids for namespace object tracking
7966 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
7968 some machines with a large number of ACPI tables (either static or
7971 Fixed a problem with the AcpiExec utility where a fault could occur when
7973 -b switch (batch mode) is used.
7975 Enhanced the namespace dump routine to output the owner ID for each
7978 Code and Data Size: The current and previous library sizes for the core
7979 subsystem are shown below. These are the code and data sizes for the
7980 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7982 values do not include any ACPI driver or OSPM code. The debug version of
7984 code includes the debug output trace mechanism and has a much larger code
7985 and data size. Note that these values will vary depending on the
7987 of the compiler and the compiler options used during generation.
7990 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7991 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
7993 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
7994 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
7997 2) iASL Compiler/Disassembler:
7999 Fixed a parse error during compilation of certain Switch/Case constructs.
8001 simplify the parse, the grammar now allows for multiple Default
8003 and this error is now detected and flagged during the analysis phase.
8005 Disassembler: The disassembly now includes the contents of the original
8006 table header within a comment at the start of the file. This includes the
8007 name and version of the original ASL compiler.
8009 ----------------------------------------
8010 17 November 2005. Summary of changes for version 20051117:
8012 1) ACPI CA Core Subsystem:
8014 Fixed a problem in the AML parser where the method thread count could be
8015 decremented below zero if any errors occurred during the method parse
8017 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8019 This also fixed a related regression with the mechanism that detects and
8020 corrects methods that cannot properly handle reentrancy (related to the
8021 deployment of the new OwnerId mechanism.)
8023 Eliminated the pre-parsing of control methods (to detect errors) during
8024 table load. Related to the problem above, this was causing unwind issues
8026 any errors occurred during the parse, and it seemed to be overkill. A
8028 load should not be aborted if there are problems with any single control
8029 method, thus rendering this feature rather pointless.
8031 Fixed a problem with the new table-driven resource manager where an
8033 buffer overflow could occur for small resource templates.
8035 Implemented a new external interface, AcpiGetVendorResource. This
8037 will find and return a vendor-defined resource descriptor within a _CRS
8039 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8042 Removed the length limit (200) on string objects as per the upcoming ACPI
8043 3.0A specification. This affects the following areas of the interpreter:
8045 any implicit conversion of a Buffer to a String, 2) a String object
8047 of the ASL Concatentate operator, 3) the String object result of the ASL
8050 Fixed a problem in the Windows OS interface layer (OSL) where a
8052 on a semaphore object would incorrectly timeout. This allows the
8053 multithreading features of the AcpiExec utility to work properly under
8056 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8057 the recently added file named "utresrc.c".
8059 Code and Data Size: The current and previous library sizes for the core
8060 subsystem are shown below. These are the code and data sizes for the
8061 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8063 values do not include any ACPI driver or OSPM code. The debug version of
8065 code includes the debug output trace mechanism and has a much larger code
8066 and data size. Note that these values will vary depending on the
8068 of the compiler and the compiler options used during generation.
8071 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8072 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8074 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8075 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8078 2) iASL Compiler/Disassembler:
8080 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8081 specification. For the iASL compiler, this means that string literals
8083 the source ASL can be of any length.
8085 Enhanced the listing output to dump the AML code for resource descriptors
8086 immediately after the ASL code for each descriptor, instead of in a block
8088 the end of the entire resource template.
8090 Enhanced the compiler debug output to dump the entire original parse tree
8091 constructed during the parse phase, before any transforms are applied to
8093 tree. The transformed tree is dumped also.
8095 ----------------------------------------
8096 02 November 2005. Summary of changes for version 20051102:
8098 1) ACPI CA Core Subsystem:
8100 Modified the subsystem initialization sequence to improve GPE support.
8102 GPE initialization has been split into two parts in order to defer
8104 of the _PRW methods (Power Resources for Wake) until after the hardware
8106 fully initialized and the SCI handler is installed. This allows the _PRW
8107 methods to access fields protected by the Global Lock. This will fix
8109 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8111 Converted the ACPI internal object disassemble and display code within
8113 AML debugger to fully table-driven operation, reducing code size and
8114 increasing maintainability.
8116 Fixed a regression with the ConcatenateResTemplate() ASL operator
8118 in the 20051021 release.
8120 Implemented support for "local" internal ACPI object types within the
8121 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8122 These local types include RegionFields, BankFields, IndexFields, Alias,
8126 Moved common AML resource handling code into a new file, "utresrc.c".
8128 code is shared by both the Resource Manager and the AML Debugger.
8130 Code and Data Size: The current and previous library sizes for the core
8131 subsystem are shown below. These are the code and data sizes for the
8132 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8134 values do not include any ACPI driver or OSPM code. The debug version of
8136 code includes the debug output trace mechanism and has a much larger code
8137 and data size. Note that these values will vary depending on the
8139 of the compiler and the compiler options used during generation.
8142 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8143 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8145 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8146 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8149 2) iASL Compiler/Disassembler:
8151 Fixed a problem with very large initializer lists (more than 4000
8153 for both Buffer and Package objects where the parse stack could overflow.
8155 Enhanced the pre-compile source code scan for non-ASCII characters to
8157 characters within comment fields. The scan is now always performed and is
8159 longer optional, detecting invalid characters within a source file
8160 immediately rather than during the parse phase or later.
8162 Enhanced the ASL grammar definition to force early reductions on all
8164 style grammar elements so that the overall parse stack usage is greatly
8165 reduced. This should improve performance and reduce the possibility of
8169 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8171 with the addition of a %expected statement, the compiler generates from
8172 source with no warnings.
8174 Fixed a possible segment fault in the disassembler if the input filename
8175 does not contain a "dot" extension (Thomas Renninger).
8177 ----------------------------------------
8178 21 October 2005. Summary of changes for version 20051021:
8180 1) ACPI CA Core Subsystem:
8182 Implemented support for the EM64T and other x86-64 processors. This
8183 essentially entails recognizing that these processors support non-aligned
8184 memory transfers. Previously, all 64-bit processors were assumed to lack
8185 hardware support for non-aligned transfers.
8187 Completed conversion of the Resource Manager to nearly full table-driven
8188 operation. Specifically, the resource conversion code (convert AML to
8189 internal format and the reverse) and the debug code to dump internal
8190 resource descriptors are fully table-driven, reducing code and data size
8192 improving maintainability.
8194 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8196 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8198 Alexey Starikovskiy)
8200 Implemented support within the resource conversion code for the Type-
8201 Specific byte within the various ACPI 3.0 *WordSpace macros.
8203 Fixed some issues within the resource conversion code for the type-
8205 flags for both Memory and I/O address resource descriptors. For Memory,
8206 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8207 TTP flags into two separate fields.
8209 Code and Data Size: The current and previous library sizes for the core
8210 subsystem are shown below. These are the code and data sizes for the
8211 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8213 values do not include any ACPI driver or OSPM code. The debug version of
8215 code includes the debug output trace mechanism and has a much larger code
8216 and data size. Note that these values will vary depending on the
8218 of the compiler and the compiler options used during generation.
8221 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8222 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8224 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8225 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8229 2) iASL Compiler/Disassembler:
8231 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8233 corresponding ResourceSource string was not also present in a resource
8234 descriptor declaration. This restriction caused problems with existing
8235 AML/ASL code that includes the Index byte without the string. When such
8237 was disassembled, it could not be compiled without modification. Further,
8238 the modified code created a resource template with a different size than
8240 original, breaking code that used fixed offsets into the resource
8244 Removed a recent feature of the disassembler to ignore a lone
8246 byte. This byte is now emitted if present so that the exact AML can be
8247 reproduced when the disassembled code is recompiled.
8249 Improved comments and text alignment for the resource descriptor code
8250 emitted by the disassembler.
8252 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8254 Register() resource descriptor.
8256 ----------------------------------------
8257 30 September 2005. Summary of changes for version 20050930:
8259 1) ACPI CA Core Subsystem:
8261 Completed a major overhaul of the Resource Manager code - specifically,
8262 optimizations in the area of the AML/internal resource conversion code.
8264 code has been optimized to simplify and eliminate duplicated code, CPU
8266 use has been decreased by optimizing function parameters and local
8267 variables, and naming conventions across the manager have been
8269 for clarity and ease of maintenance (this includes function, parameter,
8270 variable, and struct/typedef names.) The update may force changes in some
8271 driver code, depending on how resources are handled by the host OS.
8273 All Resource Manager dispatch and information tables have been moved to a
8274 single location for clarity and ease of maintenance. One new file was
8275 created, named "rsinfo.c".
8277 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8278 guarantee that the argument is not evaluated twice, making them less
8280 to macro side-effects. However, since there exists the possibility of
8281 additional stack use if a particular compiler cannot optimize them (such
8283 in the debug generation case), the original macros are optionally
8285 Note that some invocations of the return_VALUE macro may now cause size
8286 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8288 eliminate these. (From Randy Dunlap)
8290 Implemented a new mechanism to enable debug tracing for individual
8292 methods. A new external interface, AcpiDebugTrace, is provided to enable
8293 this mechanism. The intent is to allow the host OS to easily enable and
8294 disable tracing for problematic control methods. This interface can be
8295 easily exposed to a user or debugger interface if desired. See the file
8296 psxface.c for details.
8298 AcpiUtCallocate will now return a valid pointer if a length of zero is
8299 specified - a length of one is used and a warning is issued. This matches
8300 the behavior of AcpiUtAllocate.
8302 Code and Data Size: The current and previous library sizes for the core
8303 subsystem are shown below. These are the code and data sizes for the
8304 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8306 values do not include any ACPI driver or OSPM code. The debug version of
8308 code includes the debug output trace mechanism and has a much larger code
8309 and data size. Note that these values will vary depending on the
8311 of the compiler and the compiler options used during generation.
8314 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8315 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8317 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8318 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8321 2) iASL Compiler/Disassembler:
8323 A remark is issued if the effective compile-time length of a package or
8324 buffer is zero. Previously, this was a warning.
8326 ----------------------------------------
8327 16 September 2005. Summary of changes for version 20050916:
8329 1) ACPI CA Core Subsystem:
8331 Fixed a problem within the Resource Manager where support for the Generic
8332 Register descriptor was not fully implemented. This descriptor is now
8334 recognized, parsed, disassembled, and displayed.
8336 Completely restructured the Resource Manager code to utilize table-driven
8337 dispatch and lookup, eliminating many of the large switch() statements.
8339 reduces overall subsystem code size and code complexity. Affects the
8340 resource parsing and construction, disassembly, and debug dump output.
8342 Cleaned up and restructured the debug dump output for all resource
8343 descriptors. Improved readability of the output and reduced code size.
8345 Fixed a problem where changes to internal data structures caused the
8346 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8348 Code and Data Size: The current and previous library sizes for the core
8349 subsystem are shown below. These are the code and data sizes for the
8350 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8352 values do not include any ACPI driver or OSPM code. The debug version of
8354 code includes the debug output trace mechanism and has a much larger code
8355 and data size. Note that these values will vary depending on the
8357 of the compiler and the compiler options used during generation.
8360 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8361 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8363 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8364 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8367 2) iASL Compiler/Disassembler:
8369 Updated the disassembler to automatically insert an EndDependentFn()
8371 into the ASL stream if this macro is missing in the original AML code,
8372 simplifying compilation of the resulting ASL module.
8374 Fixed a problem in the disassembler where a disassembled ResourceSource
8375 string (within a large resource descriptor) was not surrounded by quotes
8377 not followed by a comma, causing errors when the resulting ASL module was
8378 compiled. Also, escape sequences within a ResourceSource string are now
8379 handled correctly (especially "\\")
8381 ----------------------------------------
8382 02 September 2005. Summary of changes for version 20050902:
8384 1) ACPI CA Core Subsystem:
8386 Fixed a problem with the internal Owner ID allocation and deallocation
8387 mechanisms for control method execution and recursive method invocation.
8388 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
8389 messages seen on some systems. Recursive method invocation depth is
8390 currently limited to 255. (Alexey Starikovskiy)
8392 Completely eliminated all vestiges of support for the "module-level
8393 executable code" until this support is fully implemented and debugged.
8395 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
8396 some systems that invoke this support.
8398 Fixed a problem within the resource manager code where the transaction
8400 for a 64-bit address descriptor were handled incorrectly in the type-
8403 Consolidated duplicate code within the address descriptor resource
8405 code, reducing overall subsystem code size.
8407 Fixed a fault when using the AML debugger "disassemble" command to
8408 disassemble individual control methods.
8410 Removed references to the "release_current" directory within the Unix
8413 Code and Data Size: The current and previous core subsystem library sizes
8414 are shown below. These are the code and data sizes for the acpica.lib
8415 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
8416 include any ACPI driver or OSPM code. The debug version of the code
8418 the debug output trace mechanism and has a much larger code and data
8420 Note that these values will vary depending on the efficiency of the
8422 and the compiler options used during generation.
8425 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8426 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8428 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8429 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8432 2) iASL Compiler/Disassembler:
8434 Implemented an error check for illegal duplicate values in the interrupt
8436 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
8439 Implemented error checking for the Irq() and IrqNoFlags() macros to
8441 too many values in the interrupt list (16 max) and invalid values in the
8444 The maximum length string literal within an ASL file is now restricted to
8445 200 characters as per the ACPI specification.
8447 Fixed a fault when using the -ln option (generate namespace listing).
8449 Implemented an error check to determine if a DescriptorName within a
8450 resource descriptor has already been used within the current scope.
8452 ----------------------------------------
8453 15 August 2005. Summary of changes for version 20050815:
8455 1) ACPI CA Core Subsystem:
8457 Implemented a full bytewise compare to determine if a table load request
8459 attempting to load a duplicate table. The compare is performed if the
8461 signatures and table lengths match. This will allow different tables with
8462 the same OEM Table ID and revision to be loaded - probably against the
8464 specification, but discovered in the field nonetheless.
8466 Added the changes.txt logfile to each of the zipped release packages.
8468 Code and Data Size: Current and previous core subsystem library sizes are
8469 shown below. These are the code and data sizes for the acpica.lib
8471 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8472 any ACPI driver or OSPM code. The debug version of the code includes the
8473 debug output trace mechanism and has a much larger code and data size.
8475 that these values will vary depending on the efficiency of the compiler
8477 the compiler options used during generation.
8480 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8481 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8483 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8484 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8487 2) iASL Compiler/Disassembler:
8489 Fixed a problem where incorrect AML code could be generated for Package
8490 objects if optimization is disabled (via the -oa switch).
8492 Fixed a problem with where incorrect AML code is generated for variable-
8493 length packages when the package length is not specified and the number
8495 initializer values is greater than 255.
8498 ----------------------------------------
8499 29 July 2005. Summary of changes for version 20050729:
8501 1) ACPI CA Core Subsystem:
8503 Implemented support to ignore an attempt to install/load a particular
8505 table more than once. Apparently there exists BIOS code that repeatedly
8506 attempts to load the same SSDT upon certain events. With assistance from
8507 Venkatesh Pallipadi.
8509 Restructured the main interface to the AML parser in order to correctly
8510 handle all exceptional conditions. This will prevent leakage of the
8512 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
8514 machines. With assistance from Alexey Starikovskiy.
8516 Support for "module level code" has been disabled in this version due to
8518 number of issues that have appeared on various machines. The support can
8520 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
8521 compilation. When the issues are fully resolved, the code will be enabled
8525 Modified the internal functions for debug print support to define the
8526 FunctionName parameter as a (const char *) for compatibility with
8528 built-in macros such as __FUNCTION__, etc.
8530 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
8532 Implemented support to display an object count summary for the AML
8534 commands Object and Methods.
8536 Code and Data Size: Current and previous core subsystem library sizes are
8537 shown below. These are the code and data sizes for the acpica.lib
8539 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8540 any ACPI driver or OSPM code. The debug version of the code includes the
8541 debug output trace mechanism and has a much larger code and data size.
8543 that these values will vary depending on the efficiency of the compiler
8545 the compiler options used during generation.
8548 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8549 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8551 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8552 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8555 2) iASL Compiler/Disassembler:
8557 Fixed a regression that appeared in the 20050708 version of the compiler
8558 where an error message was inadvertently emitted for invocations of the
8560 reserved control method.
8562 ----------------------------------------
8563 08 July 2005. Summary of changes for version 20050708:
8565 1) ACPI CA Core Subsystem:
8567 The use of the CPU stack in the debug version of the subsystem has been
8568 considerably reduced. Previously, a debug structure was declared in every
8569 function that used the debug macros. This structure has been removed in
8570 favor of declaring the individual elements as parameters to the debug
8571 functions. This reduces the cumulative stack use during nested execution
8573 ACPI function calls at the cost of a small increase in the code size of
8575 debug version of the subsystem. With assistance from Alexey Starikovskiy
8579 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
8580 headers to define a macro that will return the current function name at
8581 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
8583 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
8584 compiler-dependent header, the function name is saved on the CPU stack
8586 pointer per function.) This mechanism is used because apparently there
8587 exists no standard ANSI-C defined macro that that returns the function
8590 Redesigned and reimplemented the "Owner ID" mechanism used to track
8591 namespace objects created/deleted by ACPI tables and control method
8592 execution. A bitmap is now used to allocate and free the IDs, thus
8594 the wraparound problem present in the previous implementation. The size
8596 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
8599 Removed the UINT32_BIT and UINT16_BIT types that were used for the
8601 flag definitions within the headers for the predefined ACPI tables. These
8602 have been replaced by UINT8_BIT in order to increase the code portability
8604 the subsystem. If the use of UINT8 remains a problem, we may be forced to
8605 eliminate bitfields entirely because of a lack of portability.
8607 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
8609 is a frequently used function and this improvement increases the
8611 of the entire subsystem (Alexey Starikovskiy).
8613 Fixed several possible memory leaks and the inverse - premature object
8614 deletion (Alexey Starikovskiy).
8616 Code and Data Size: Current and previous core subsystem library sizes are
8617 shown below. These are the code and data sizes for the acpica.lib
8619 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8620 any ACPI driver or OSPM code. The debug version of the code includes the
8621 debug output trace mechanism and has a much larger code and data size.
8623 that these values will vary depending on the efficiency of the compiler
8625 the compiler options used during generation.
8628 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8629 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8631 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8632 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8634 ----------------------------------------
8635 24 June 2005. Summary of changes for version 20050624:
8637 1) ACPI CA Core Subsystem:
8639 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
8640 the host-defined cache object. This allows the OSL implementation to
8642 and type this object in any manner desired, simplifying the OSL
8643 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
8644 Linux, and should be defined in the OS-specific header file for other
8645 operating systems as required.
8647 Changed the interface to AcpiOsAcquireObject to directly return the
8648 requested object as the function return (instead of ACPI_STATUS.) This
8649 change was made for performance reasons, since this is the purpose of the
8650 interface in the first place. AcpiOsAcquireObject is now similar to the
8651 AcpiOsAllocate interface.
8653 Implemented a new AML debugger command named Businfo. This command
8655 information about all devices that have an associate _PRT object. The
8657 _HID, _UID, and _CID are displayed for these devices.
8659 Modified the initialization sequence in AcpiInitializeSubsystem to call
8661 OSL interface AcpiOslInitialize first, before any local initialization.
8663 change was required because the global initialization now calls OSL
8666 Enhanced the Dump command to display the entire contents of Package
8668 (including all sub-objects and their values.)
8670 Restructured the code base to split some files because of size and/or
8671 because the code logically belonged in a separate file. New files are
8673 below. All makefiles and project files included in the ACPI CA release
8676 utilities/utcache.c /* Local cache interfaces */
8677 utilities/utmutex.c /* Local mutex support */
8678 utilities/utstate.c /* State object support */
8679 interpreter/parser/psloop.c /* Main AML parse loop */
8681 Code and Data Size: Current and previous core subsystem library sizes are
8682 shown below. These are the code and data sizes for the acpica.lib
8684 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8685 any ACPI driver or OSPM code. The debug version of the code includes the
8686 debug output trace mechanism and has a much larger code and data size.
8688 that these values will vary depending on the efficiency of the compiler
8690 the compiler options used during generation.
8693 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8694 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8696 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8697 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8700 2) iASL Compiler/Disassembler:
8702 Fixed a regression introduced in version 20050513 where the use of a
8704 object within a Case() statement caused a compile time exception. The
8705 original behavior has been restored (a Match() operator is emitted.)
8707 ----------------------------------------
8708 17 June 2005. Summary of changes for version 20050617:
8710 1) ACPI CA Core Subsystem:
8712 Moved the object cache operations into the OS interface layer (OSL) to
8714 the host OS to handle these operations if desired (for example, the Linux
8715 OSL will invoke the slab allocator). This support is optional; the
8717 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
8719 code in the ACPI CA core. The new OSL interfaces are shown below. See
8720 utalloc.c for an example implementation, and acpiosxf.h for the exact
8721 interface definitions. With assistance from Alexey Starikovskiy.
8728 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
8730 and restore a flags parameter. This fits better with many OS lock models.
8731 Note: the current execution state (interrupt handler or not) is no longer
8732 passed to these interfaces. If necessary, the OSL must determine this
8734 by itself, a simple and fast operation. With assistance from Alexey
8737 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
8738 present if the revision of the RSDP was 2 or greater. According to the
8740 specification, the XSDT is optional in all cases, and the table manager
8741 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
8742 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
8746 Fixed an interpreter problem with the Mid() operator in the case of an
8748 string where the resulting output string is of zero length. It now
8750 returns a valid, null terminated string object instead of a string object
8751 with a null pointer.
8753 Fixed a problem with the control method argument handling to allow a
8755 to an Arg object that already contains an object of type Device. The
8757 object is now correctly overwritten. Previously, an error was returned.
8760 Enhanced the debugger Find command to emit object values in addition to
8762 found object pathnames. The output format is the same as the dump
8766 Enhanced the debugger Set command. It now has the ability to set the
8768 of any Named integer object in the namespace (Previously, only method
8770 and args could be set.)
8772 Code and Data Size: Current and previous core subsystem library sizes are
8773 shown below. These are the code and data sizes for the acpica.lib
8775 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8776 any ACPI driver or OSPM code. The debug version of the code includes the
8777 debug output trace mechanism and has a much larger code and data size.
8779 that these values will vary depending on the efficiency of the compiler
8781 the compiler options used during generation.
8784 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8785 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8787 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8788 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8791 2) iASL Compiler/Disassembler:
8793 Fixed a regression in the disassembler where if/else/while constructs
8795 output incorrectly. This problem was introduced in the previous release
8796 (20050526). This problem also affected the single-step disassembly in the
8799 Fixed a problem where compiling the reserved _OSI method would randomly
8801 rarely) produce compile errors.
8803 Enhanced the disassembler to emit compilable code in the face of
8805 AML resource descriptors. If the optional ResourceSourceIndex is present,
8806 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
8807 disassembly. Otherwise, the resulting code cannot be compiled without
8810 ----------------------------------------
8811 26 May 2005. Summary of changes for version 20050526:
8813 1) ACPI CA Core Subsystem:
8815 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
8816 the module level (not within a control method.) These opcodes are
8818 exactly once at the time the table is loaded. This type of code was legal
8820 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
8822 order to provide backwards compatibility with earlier BIOS
8824 This eliminates the "Encountered executable code at module level" warning
8825 that was previously generated upon detection of such code.
8827 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
8828 inadvertently be generated during the lookup of namespace objects in the
8829 second pass parse of ACPI tables and control methods. It appears that
8831 problem could occur during the resolution of forward references to
8835 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
8836 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
8837 allows the deadlock detection debug code to be compiled out in the normal
8838 case, improving mutex performance (and overall subsystem performance)
8841 Implemented a handful of miscellaneous fixes for possible memory leaks on
8842 error conditions and error handling control paths. These fixes were
8843 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
8845 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
8847 to prevent a fault in this error case.
8849 Code and Data Size: Current and previous core subsystem library sizes are
8850 shown below. These are the code and data sizes for the acpica.lib
8852 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8853 any ACPI driver or OSPM code. The debug version of the code includes the
8854 debug output trace mechanism and has a much larger code and data size.
8856 that these values will vary depending on the efficiency of the compiler
8858 the compiler options used during generation.
8861 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8862 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8864 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8865 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8868 2) iASL Compiler/Disassembler:
8870 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
8871 the module level (not within a control method.) These operators will be
8872 executed once at the time the table is loaded. This type of code was
8874 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
8875 compiler in order to provide backwards compatibility with earlier BIOS
8879 The ACPI integer width (specified via the table revision ID or the -r
8880 override, 32 or 64 bits) is now used internally during compile-time
8882 folding to ensure that constants are truncated to 32 bits if necessary.
8883 Previously, the revision ID value was only emitted in the AML table
8886 An error message is now generated for the Mutex and Method operators if
8888 SyncLevel parameter is outside the legal range of 0 through 15.
8890 Fixed a problem with the Method operator ParameterTypes list handling
8892 3.0). Previously, more than 2 types or 2 arguments generated a syntax
8894 The actual underlying implementation of method argument typechecking is
8895 still under development, however.
8897 ----------------------------------------
8898 13 May 2005. Summary of changes for version 20050513:
8900 1) ACPI CA Core Subsystem:
8902 Implemented support for PCI Express root bridges -- added support for
8904 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
8906 The interpreter now automatically truncates incoming 64-bit constants to
8908 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
8910 also affects the iASL compiler constant folding. (Note: as per below, the
8911 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
8913 Fixed a problem where string and buffer objects with "static" pointers
8914 (pointers to initialization data within an ACPI table) were not handled
8915 consistently. The internal object copy operation now always copies the
8917 to a newly allocated buffer, regardless of whether the source object is
8920 Fixed a problem with the FromBCD operator where an implicit result
8921 conversion was improperly performed while storing the result to the
8923 operand. Since this is an "explicit conversion" operator, the implicit
8924 conversion should never be performed on the output.
8926 Fixed a problem with the CopyObject operator where a copy to an existing
8927 named object did not always completely overwrite the existing object
8929 at name. Specifically, a buffer-to-buffer copy did not delete the
8933 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
8935 structs for consistency.
8937 Code and Data Size: Current and previous core subsystem library sizes are
8938 shown below. These are the code and data sizes for the acpica.lib
8940 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8941 any ACPI driver or OSPM code. The debug version of the code includes the
8942 debug output trace mechanism and has a much larger code and data size.
8944 that these values will vary depending on the efficiency of the compiler
8946 the compiler options used during generation.
8949 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8950 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8951 Current Release: (Same sizes)
8952 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8953 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8956 2) iASL Compiler/Disassembler:
8958 The compiler now emits a warning if an attempt is made to generate a 64-
8960 integer constant from within a 32-bit ACPI table (Revision < 2). The
8962 is truncated to 32 bits.
8964 Fixed a problem with large package objects: if the static length of the
8965 package is greater than 255, the "variable length package" opcode is
8966 emitted. Previously, this caused an error. This requires an update to the
8967 ACPI spec, since it currently (incorrectly) states that packages larger
8969 255 elements are not allowed.
8971 The disassembler now correctly handles variable length packages and
8973 larger than 255 elements.
8975 ----------------------------------------
8976 08 April 2005. Summary of changes for version 20050408:
8978 1) ACPI CA Core Subsystem:
8980 Fixed three cases in the interpreter where an "index" argument to an ASL
8981 function was still (internally) 32 bits instead of the required 64 bits.
8982 This was the Index argument to the Index, Mid, and Match operators.
8984 The "strupr" function is now permanently local (AcpiUtStrupr), since this
8986 not a POSIX-defined function and not present in most kernel-level C
8987 libraries. All references to the C library strupr function have been
8991 Completed the deployment of static functions/prototypes. All prototypes
8993 the static attribute have been moved from the headers to the owning C
8996 Implemented an extract option (-e) for the AcpiBin utility (AML binary
8997 utility). This option allows the utility to extract individual ACPI
8999 from the output of AcpiDmp. It provides the same functionality of the
9000 acpixtract.pl perl script without the worry of setting the correct perl
9001 options. AcpiBin runs on Windows and has not yet been generated/validated
9003 the Linux/Unix environment (but should be soon).
9005 Updated and fixed the table dump option for AcpiBin (-d). This option
9006 converts a single ACPI table to a hex/ascii file, similar to the output
9010 Code and Data Size: Current and previous core subsystem library sizes are
9011 shown below. These are the code and data sizes for the acpica.lib
9013 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9014 any ACPI driver or OSPM code. The debug version of the code includes the
9015 debug output trace mechanism and has a much larger code and data size.
9017 that these values will vary depending on the efficiency of the compiler
9019 the compiler options used during generation.
9022 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9023 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9025 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9026 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9029 2) iASL Compiler/Disassembler:
9031 Disassembler fix: Added a check to ensure that the table length found in
9033 ACPI table header within the input file is not longer than the actual
9035 file size. This indicates some kind of file or table corruption.
9037 ----------------------------------------
9038 29 March 2005. Summary of changes for version 20050329:
9040 1) ACPI CA Core Subsystem:
9042 An error is now generated if an attempt is made to create a Buffer Field
9044 length zero (A CreateField with a length operand of zero.)
9046 The interpreter now issues a warning whenever executable code at the
9048 level is detected during ACPI table load. This will give some idea of the
9049 prevalence of this type of code.
9051 Implemented support for references to named objects (other than control
9052 methods) within package objects.
9054 Enhanced package object output for the debug object. Package objects are
9056 completely dumped, showing all elements.
9058 Enhanced miscellaneous object output for the debug object. Any object can
9059 now be written to the debug object (for example, a device object can be
9060 written, and the type of the object will be displayed.)
9062 The "static" qualifier has been added to all local functions across both
9064 core subsystem and the iASL compiler.
9066 The number of "long" lines (> 80 chars) within the source has been
9067 significantly reduced, by about 1/3.
9069 Cleaned up all header files to ensure that all CA/iASL functions are
9070 prototyped (even static functions) and the formatting is consistent.
9072 Two new header files have been added, acopcode.h and acnames.h.
9074 Removed several obsolete functions that were no longer used.
9076 Code and Data Size: Current and previous core subsystem library sizes are
9077 shown below. These are the code and data sizes for the acpica.lib
9079 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9080 any ACPI driver or OSPM code. The debug version of the code includes the
9081 debug output trace mechanism and has a much larger code and data size.
9083 that these values will vary depending on the efficiency of the compiler
9085 the compiler options used during generation.
9088 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9089 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9091 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9092 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9096 2) iASL Compiler/Disassembler:
9098 Fixed a problem with the resource descriptor generation/support. For the
9099 ResourceSourceIndex and the ResourceSource fields, both must be present,
9101 both must be not present - can't have one without the other.
9103 The compiler now returns non-zero from the main procedure if any errors
9105 occurred during the compilation.
9108 ----------------------------------------
9109 09 March 2005. Summary of changes for version 20050309:
9111 1) ACPI CA Core Subsystem:
9113 The string-to-buffer implicit conversion code has been modified again
9115 a change to the ACPI specification. In order to match the behavior of
9117 other major ACPI implementation, the target buffer is no longer truncated
9119 the source string is smaller than an existing target buffer. This change
9120 requires an update to the ACPI spec, and should eliminate the recent
9121 AE_AML_BUFFER_LIMIT issues.
9123 The "implicit return" support was rewritten to a new algorithm that
9125 the general case. Rather than attempt to determine when a method is about
9127 exit, the result of every ASL operator is saved momentarily until the
9129 next ASL operator is executed. Therefore, no matter how the method exits,
9130 there will always be a saved implicit return value. This feature is only
9131 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9133 AE_AML_NO_RETURN_VALUE errors when enabled.
9135 Implemented implicit conversion support for the predicate (operand) of
9137 If, Else, and While operators. String and Buffer arguments are
9139 converted to Integers.
9141 Changed the string-to-integer conversion behavior to match the new ACPI
9142 errata: "If no integer object exists, a new integer is created. The ASCII
9143 string is interpreted as a hexadecimal constant. Each string character is
9144 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9145 with the first character as the most significant digit, and ending with
9147 first non-hexadecimal character or end-of-string." This means that the
9149 non-hex character terminates the conversion and this is the code that was
9152 Fixed a problem where the ObjectType operator would fail (fault) when
9154 on an Index of a Package which pointed to a null package element. The
9155 operator now properly returns zero (Uninitialized) in this case.
9157 Fixed a problem where the While operator used excessive memory by not
9158 properly popping the result stack during execution. There was no memory
9160 after execution, however. (Code provided by Valery Podrezov.)
9162 Fixed a problem where references to control methods within Package
9164 caused the method to be invoked, instead of producing a reference object
9165 pointing to the method.
9167 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9169 improve performance and reduce code size. (Code provided by Alexey
9172 Code and Data Size: Current and previous core subsystem library sizes are
9173 shown below. These are the code and data sizes for the acpica.lib
9175 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9176 any ACPI driver or OSPM code. The debug version of the code includes the
9177 debug output trace mechanism and has a much larger code and data size.
9179 that these values will vary depending on the efficiency of the compiler
9181 the compiler options used during generation.
9184 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9185 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9187 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9188 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9191 2) iASL Compiler/Disassembler:
9193 Fixed a problem with the Return operator with no arguments. Since the AML
9194 grammar for the byte encoding requires an operand for the Return opcode,
9196 compiler now emits a Return(Zero) for this case. An ACPI specification
9197 update has been written for this case.
9199 For tables other than the DSDT, namepath optimization is automatically
9200 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9202 compiler has no knowledge of where, and thus cannot optimize namepaths.
9204 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9205 inadvertently omitted from the ACPI specification, and will require an
9208 The source file scan for ASCII characters is now optional (-a). This
9210 was made because some vendors place non-ascii characters within comments.
9211 However, the scan is simply a brute-force byte compare to ensure all
9212 characters in the file are in the range 0x00 to 0x7F.
9214 Fixed a problem with the CondRefOf operator where the compiler was
9215 inappropriately checking for the existence of the target. Since the point
9217 the operator is to check for the existence of the target at run-time, the
9218 compiler no longer checks for the target existence.
9220 Fixed a problem where errors generated from the internal AML interpreter
9221 during constant folding were not handled properly, causing a fault.
9223 Fixed a problem with overly aggressive range checking for the Stall
9224 operator. The valid range (max 255) is now only checked if the operand is
9226 type Integer. All other operand types cannot be statically checked.
9228 Fixed a problem where control method references within the RefOf,
9230 and ObjectType operators were not treated properly. They are now treated
9232 actual references, not method invocations.
9234 Fixed and enhanced the "list namespace" option (-ln). This option was
9236 a number of releases ago.
9238 Improved error handling for the Field, IndexField, and BankField
9240 The compiler now cleanly reports and recovers from errors in the field
9241 component (FieldUnit) list.
9243 Fixed a disassembler problem where the optional ResourceDescriptor fields
9244 TRS and TTP were not always handled correctly.
9246 Disassembler - Comments in output now use "//" instead of "/*"
9248 ----------------------------------------
9249 28 February 2005. Summary of changes for version 20050228:
9251 1) ACPI CA Core Subsystem:
9253 Fixed a problem where the result of an Index() operator (an object
9254 reference) must increment the reference count on the target object for
9256 life of the object reference.
9258 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9259 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9261 resource descriptors.
9263 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9264 Space Descriptor" string, indicating interpreter support for the
9268 Implemented header support for the new ACPI 3.0 FADT flag bits.
9270 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9272 status/enable registers.
9274 Updated header support for the MADT processor local Apic struct and MADT
9275 platform interrupt source struct for new ACPI 3.0 fields.
9277 Implemented header support for the SRAT and SLIT ACPI tables.
9279 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9283 Code and Data Size: Current and previous core subsystem library sizes are
9284 shown below. These are the code and data sizes for the acpica.lib
9286 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9287 any ACPI driver or OSPM code. The debug version of the code includes the
9288 debug output trace mechanism and has a much larger code and data size.
9290 that these values will vary depending on the efficiency of the compiler
9292 the compiler options used during generation.
9295 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9296 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9298 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9299 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9302 2) iASL Compiler/Disassembler:
9304 Fixed a problem with the internal 64-bit String-to-integer conversion
9306 strings less than two characters long.
9308 Fixed a problem with constant folding where the result of the Index()
9309 operator can not be considered a constant. This means that Index() cannot
9311 a type3 opcode and this will require an update to the ACPI specification.
9313 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9314 descriptor fields. These fields were inadvertently ignored and not output
9316 the disassembly of the resource descriptor.
9319 ----------------------------------------
9320 11 February 2005. Summary of changes for version 20050211:
9322 1) ACPI CA Core Subsystem:
9324 Implemented ACPI 3.0 support for implicit conversion within the Match()
9325 operator. MatchObjects can now be of type integer, buffer, or string
9327 of just type integer. Package elements are implicitly converted to the
9329 of the MatchObject. This change aligns the behavior of Match() with the
9330 behavior of the other logical operators (LLess(), etc.) It also requires
9332 errata change to the ACPI specification as this support was intended for
9333 ACPI 3.0, but was inadvertently omitted.
9335 Fixed a problem with the internal implicit "to buffer" conversion.
9337 that are converted to buffers will cause buffer truncation if the string
9339 smaller than the target buffer. Integers that are converted to buffers
9341 not cause buffer truncation, only zero extension (both as per the ACPI
9342 spec.) The problem was introduced when code was added to truncate the
9343 buffer, but this should not be performed in all cases, only the string
9346 Fixed a problem with the Buffer and Package operators where the
9348 would get confused if two such operators were used as operands to an ASL
9349 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9350 stack was not being popped after the execution of these operators,
9352 in an AE_NO_RETURN_VALUE exception.
9354 Fixed a problem with constructs of the form Store(Index(...),...). The
9355 reference object returned from Index was inadvertently resolved to an
9357 value. This problem was introduced in version 20050114 when the behavior
9359 Store() was modified to restrict the object types that can be used as the
9360 source operand (to match the ACPI specification.)
9362 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9364 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9366 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9368 Code and Data Size: Current and previous core subsystem library sizes are
9369 shown below. These are the code and data sizes for the acpica.lib
9371 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9372 any ACPI driver or OSPM code. The debug version of the code includes the
9373 debug output trace mechanism and has a much larger code and data size.
9375 that these values will vary depending on the efficiency of the compiler
9377 the compiler options used during generation.
9380 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9381 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9383 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9384 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9387 2) iASL Compiler/Disassembler:
9389 Fixed a code generation problem in the constant folding optimization code
9390 where incorrect code was generated if a constant was reduced to a buffer
9391 object (i.e., a reduced type 5 opcode.)
9393 Fixed a typechecking problem for the ToBuffer operator. Caused by an
9394 incorrect return type in the internal opcode information table.
9396 ----------------------------------------
9397 25 January 2005. Summary of changes for version 20050125:
9399 1) ACPI CA Core Subsystem:
9401 Fixed a recently introduced problem with the Global Lock where the
9402 underlying semaphore was not created. This problem was introduced in
9403 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
9404 Acquire() operation on _GL.
9406 The local object cache is now optional, and is disabled by default. Both
9407 AcpiExec and the iASL compiler enable the cache because they run in user
9408 mode and this enhances their performance. #define
9409 ACPI_ENABLE_OBJECT_CACHE
9410 to enable the local cache.
9412 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
9414 optional "implicit return" support where an error was returned if no
9416 object was expected, but one was implicitly returned. AE_OK is now
9418 in this case and the implicitly returned object is deleted.
9419 AcpiUtEvaluateObject is only occasionally used, and only to execute
9421 methods such as _STA and _INI where the return type is known up front.
9423 Fixed a few issues with the internal convert-to-integer code. It now
9425 an error if an attempt is made to convert a null string, a string of only
9426 blanks/tabs, or a zero-length buffer. This affects both implicit
9428 and explicit conversion via the ToInteger() operator.
9430 The internal debug code in AcpiUtAcquireMutex has been commented out. It
9432 not needed for normal operation and should increase the performance of
9434 entire subsystem. The code remains in case it is needed for debug
9438 The AcpiExec source and makefile are included in the Unix/Linux package
9442 Code and Data Size: Current and previous core subsystem library sizes are
9443 shown below. These are the code and data sizes for the acpica.lib
9445 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9446 any ACPI driver or OSPM code. The debug version of the code includes the
9447 debug output trace mechanism and has a much larger code and data size.
9449 that these values will vary depending on the efficiency of the compiler
9451 the compiler options used during generation.
9454 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9455 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9457 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9458 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9460 2) iASL Compiler/Disassembler:
9462 Switch/Case support: A warning is now issued if the type of the Switch
9464 cannot be determined at compile time. For example, Switch(Arg0) will
9465 generate the warning, and the type is assumed to be an integer. As per
9467 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
9471 Switch/Case support: Implemented support for buffer and string objects as
9472 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
9473 buffers and strings.
9475 Switch/Case support: The emitted code for the LEqual() comparisons now
9477 the switch value as the first operand, not the second. The case value is
9479 the second operand, and this allows the case value to be implicitly
9480 converted to the type of the switch value, not the other way around.
9482 Switch/Case support: Temporary variables are now emitted immediately
9484 the control method, not at the global level. This means that there are
9486 36 temps available per-method, not 36 temps per-module as was the case
9488 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
9490 ----------------------------------------
9491 14 January 2005. Summary of changes for version 20050114:
9493 Added 2005 copyright to all module headers. This affects every module in
9494 the core subsystem, iASL compiler, and the utilities.
9496 1) ACPI CA Core Subsystem:
9498 Fixed an issue with the String-to-Buffer conversion code where the string
9499 null terminator was not included in the buffer after conversion, but
9501 is existing ASL that assumes the string null terminator is included. This
9503 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
9504 introduced in the previous version when the code was updated to correctly
9505 set the converted buffer size as per the ACPI specification. The ACPI
9507 is ambiguous and will be updated to specify that the null terminator must
9509 included in the converted buffer. This also affects the ToBuffer() ASL
9512 Fixed a problem with the Mid() ASL/AML operator where it did not work
9513 correctly on Buffer objects. Newly created sub-buffers were not being
9518 Fixed a problem in AcpiTbFindTable where incorrect string compares were
9519 performed on the OemId and OemTableId table header fields. These fields
9521 not null terminated, so strncmp is now used instead of strcmp.
9523 Implemented a restriction on the Store() ASL/AML operator to align the
9524 behavior with the ACPI specification. Previously, any object could be
9526 as the source operand. Now, the only objects that may be used are
9528 Buffers, Strings, Packages, Object References, and DDB Handles. If
9529 necessary, the original behavior can be restored by enabling the
9530 EnableInterpreterSlack flag.
9532 Enhanced the optional "implicit return" support to allow an implicit
9534 value from methods that are invoked externally via the AcpiEvaluateObject
9535 interface. This enables implicit returns from the _STA and _INI methods,
9538 Changed the Revision() ASL/AML operator to return the current version of
9540 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
9542 the supported ACPI version (This is the function of the _REV method).
9544 Updated the _REV predefined method to return the currently supported
9548 Implemented batch mode option for the AcpiExec utility (-b).
9550 Code and Data Size: Current and previous core subsystem library sizes are
9551 shown below. These are the code and data sizes for the acpica.lib
9553 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9554 any ACPI driver or OSPM code. The debug version of the code includes the
9555 debug output trace mechanism and has a much larger code and data size.
9557 that these values will vary depending on the efficiency of the compiler
9559 the compiler options used during generation.
9562 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9563 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9565 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9566 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9568 ----------------------------------------
9569 10 December 2004. Summary of changes for version 20041210:
9571 ACPI 3.0 support is nearing completion in both the iASL compiler and the
9572 ACPI CA core subsystem.
9574 1) ACPI CA Core Subsystem:
9576 Fixed a problem in the ToDecimalString operator where the resulting
9578 length was incorrectly calculated. The length is now calculated exactly,
9579 eliminating incorrect AE_STRING_LIMIT exceptions.
9581 Fixed a problem in the ToHexString operator to allow a maximum 200
9583 string to be produced.
9585 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
9587 routine where the length of the resulting buffer was not truncated to the
9588 new size (if the target buffer already existed).
9590 Code and Data Size: Current and previous core subsystem library sizes are
9591 shown below. These are the code and data sizes for the acpica.lib
9593 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9594 any ACPI driver or OSPM code. The debug version of the code includes the
9595 debug output trace mechanism and has a much larger code and data size.
9597 that these values will vary depending on the efficiency of the compiler
9599 the compiler options used during generation.
9602 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9603 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9605 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9606 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9609 2) iASL Compiler/Disassembler:
9611 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
9612 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
9613 Includes support in the disassembler.
9615 Implemented support for the new (ACPI 3.0) parameter to the Register
9619 Fixed a problem where the _HE resource name for the Interrupt macro was
9620 referencing bit 0 instead of bit 1.
9622 Implemented check for maximum 255 interrupts in the Interrupt macro.
9624 Fixed a problem with the predefined resource descriptor names where
9625 incorrect AML code was generated if the offset within the resource buffer
9626 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
9627 but did not update the surrounding package lengths.
9629 Changes to the Dma macro: All channels within the channel list must be
9631 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
9632 optional (default is BusMaster).
9634 Implemented check for maximum 7 data bytes for the VendorShort macro.
9636 The ReadWrite parameter is now optional for the Memory32 and similar
9639 ----------------------------------------
9640 03 December 2004. Summary of changes for version 20041203:
9642 1) ACPI CA Core Subsystem:
9644 The low-level field insertion/extraction code (exfldio) has been
9646 rewritten to eliminate unnecessary complexity, bugs, and boundary
9649 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
9651 operators where the input operand could be inadvertently deleted if no
9652 conversion was necessary (e.g., if the input to ToInteger was an Integer
9655 Fixed a problem with the ToDecimalString and ToHexString where an
9657 exception code was returned if the resulting string would be > 200 chars.
9658 AE_STRING_LIMIT is now returned.
9660 Fixed a problem with the Concatenate operator where AE_OK was always
9661 returned, even if the operation failed.
9663 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
9664 semaphores to be allocated.
9666 Code and Data Size: Current and previous core subsystem library sizes are
9667 shown below. These are the code and data sizes for the acpica.lib
9669 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9670 any ACPI driver or OSPM code. The debug version of the code includes the
9671 debug output trace mechanism and has a much larger code and data size.
9673 that these values will vary depending on the efficiency of the compiler
9675 the compiler options used during generation.
9678 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9679 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9681 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9682 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9685 2) iASL Compiler/Disassembler:
9687 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
9688 recently introduced in 20041119.
9690 Fixed a problem with the ToUUID macro where the upper nybble of each
9692 byte was inadvertently set to zero.
9694 ----------------------------------------
9695 19 November 2004. Summary of changes for version 20041119:
9697 1) ACPI CA Core Subsystem:
9699 Fixed a problem in the internal ConvertToInteger routine where new
9701 were not truncated to 32 bits for 32-bit ACPI tables. This routine
9703 buffers and strings to integers.
9705 Implemented support to store a value to an Index() on a String object.
9707 is an ACPI 2.0 feature that had not yet been implemented.
9709 Implemented new behavior for storing objects to individual package
9711 (via the Index() operator). The previous behavior was to invoke the
9713 conversion rules if an object was already present at the index. The new
9714 behavior is to simply delete any existing object and directly store the
9716 object. Although the ACPI specification seems unclear on this subject,
9718 ACPI implementations behave in this manner. (This is the root of the
9719 AE_BAD_HEX_CONSTANT issue.)
9721 Modified the RSDP memory scan mechanism to support the extended checksum
9723 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
9724 RSDP signature is found with a valid checksum.
9726 Code and Data Size: Current and previous core subsystem library sizes are
9727 shown below. These are the code and data sizes for the acpica.lib
9729 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9730 any ACPI driver or OSPM code. The debug version of the code includes the
9731 debug output trace mechanism and has a much larger code and data size.
9733 that these values will vary depending on the efficiency of the compiler
9735 the compiler options used during generation.
9738 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9739 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9741 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9742 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9745 2) iASL Compiler/Disassembler:
9747 Fixed a missing semicolon in the aslcompiler.y file.
9749 ----------------------------------------
9750 05 November 2004. Summary of changes for version 20041105:
9752 1) ACPI CA Core Subsystem:
9754 Implemented support for FADT revision 2. This was an interim table
9756 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
9758 Implemented optional support to allow uninitialized LocalX and ArgX
9759 variables in a control method. The variables are initialized to an
9761 object with a value of zero. This support is enabled by setting the
9762 AcpiGbl_EnableInterpreterSlack flag to TRUE.
9764 Implemented support for Integer objects for the SizeOf operator. Either
9766 or 8 is returned, depending on the current integer size (32-bit or 64-
9768 depending on the parent table revision).
9770 Fixed a problem in the implementation of the SizeOf and ObjectType
9772 where the operand was resolved to a value too early, causing incorrect
9773 return values for some objects.
9775 Fixed some possible memory leaks during exceptional conditions.
9777 Code and Data Size: Current and previous core subsystem library sizes are
9778 shown below. These are the code and data sizes for the acpica.lib
9780 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9781 any ACPI driver or OSPM code. The debug version of the code includes the
9782 debug output trace mechanism and has a much larger code and data size.
9784 that these values will vary depending on the efficiency of the compiler
9786 the compiler options used during generation.
9789 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9790 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9792 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9793 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9796 2) iASL Compiler/Disassembler:
9798 Implemented support for all ACPI 3.0 reserved names and methods.
9800 Implemented all ACPI 3.0 grammar elements in the front-end, including
9801 support for semicolons.
9803 Implemented the ACPI 3.0 Function() and ToUUID() macros
9805 Fixed a problem in the disassembler where a Scope() operator would not be
9806 emitted properly if the target of the scope was in another table.
9808 ----------------------------------------
9809 15 October 2004. Summary of changes for version 20041015:
9811 Note: ACPI CA is currently undergoing an in-depth and complete formal
9812 evaluation to test/verify the following areas. Other suggestions are
9813 welcome. This will result in an increase in the frequency of releases and
9814 the number of bug fixes in the next few months.
9815 - Functional tests for all ASL/AML operators
9816 - All implicit/explicit type conversions
9817 - Bit fields and operation regions
9818 - 64-bit math support and 32-bit-only "truncated" math support
9819 - Exceptional conditions, both compiler and interpreter
9820 - Dynamic object deletion and memory leaks
9821 - ACPI 3.0 support when implemented
9822 - External interfaces to the ACPI subsystem
9825 1) ACPI CA Core Subsystem:
9827 Fixed two alignment issues on 64-bit platforms - within debug statements
9829 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
9831 field within the non-aligned ACPI generic address structure.
9833 Fixed a problem in the Increment and Decrement operators where incorrect
9834 operand resolution could result in the inadvertent modification of the
9835 original integer when the integer is passed into another method as an
9836 argument and the arg is then incremented/decremented.
9838 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
9840 BCD number were truncated during conversion.
9842 Fixed a problem in the ToDecimal operator where the length of the
9844 string could be set incorrectly too long if the input operand was a
9848 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
9850 within a buffer would prematurely terminate a compare between buffer
9853 Added a check for string overflow (>200 characters as per the ACPI
9854 specification) during the Concatenate operator with two string operands.
9856 Code and Data Size: Current and previous core subsystem library sizes are
9857 shown below. These are the code and data sizes for the acpica.lib
9859 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9860 any ACPI driver or OSPM code. The debug version of the code includes the
9861 debug output trace mechanism and has a much larger code and data size.
9863 that these values will vary depending on the efficiency of the compiler
9865 the compiler options used during generation.
9868 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9869 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9871 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9872 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9876 2) iASL Compiler/Disassembler:
9878 Allow the use of the ObjectType operator on uninitialized Locals and Args
9879 (returns 0 as per the ACPI specification).
9881 Fixed a problem where the compiler would fault if there was a syntax
9883 in the FieldName of all of the various CreateXXXField operators.
9885 Disallow the use of lower case letters within the EISAID macro, as per
9887 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
9889 U is an uppercase letter and N is a hex digit.
9892 ----------------------------------------
9893 06 October 2004. Summary of changes for version 20041006:
9895 1) ACPI CA Core Subsystem:
9897 Implemented support for the ACPI 3.0 Timer operator. This ASL function
9898 implements a 64-bit timer with 100 nanosecond granularity.
9900 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
9901 implement the ACPI 3.0 Timer operator. This allows the host OS to
9903 the timer with the best clock available. Also, it keeps the core
9905 out of the clock handling business, since the host OS (usually) performs
9908 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
9909 functions use a 64-bit address which is part of the packed ACPI Generic
9910 Address Structure. Since the structure is non-aligned, the alignment
9912 are now used to extract the address to a local variable before use.
9914 Fixed a problem where the ToInteger operator assumed all input strings
9916 hexadecimal. The operator now handles both decimal strings and hex
9918 (prefixed with "0x").
9920 Fixed a problem where the string length in the string object created as a
9921 result of the internal ConvertToString procedure could be incorrect. This
9922 potentially affected all implicit conversions and also the
9924 and ToHexString operators.
9926 Fixed two problems in the ToString operator. If the length parameter was
9927 zero, an incorrect string object was created and the value of the input
9928 length parameter was inadvertently changed from zero to Ones.
9930 Fixed a problem where the optional ResourceSource string in the
9932 resource macro was ignored.
9934 Simplified the interfaces to the internal division functions, reducing
9936 size and complexity.
9938 Code and Data Size: Current and previous core subsystem library sizes are
9939 shown below. These are the code and data sizes for the acpica.lib
9941 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9942 any ACPI driver or OSPM code. The debug version of the code includes the
9943 debug output trace mechanism and has a much larger code and data size.
9945 that these values will vary depending on the efficiency of the compiler
9947 the compiler options used during generation.
9950 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
9951 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
9953 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9954 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9957 2) iASL Compiler/Disassembler:
9959 Implemented support for the ACPI 3.0 Timer operator.
9961 Fixed a problem where the Default() operator was inadvertently ignored in
9963 Switch/Case block. This was a problem in the translation of the Switch
9964 statement to If...Else pairs.
9966 Added support to allow a standalone Return operator, with no parentheses
9970 Fixed a problem with code generation for the ElseIf operator where the
9971 translated Else...If parse tree was improperly constructed leading to the
9974 ----------------------------------------
9975 22 September 2004. Summary of changes for version 20040922:
9977 1) ACPI CA Core Subsystem:
9979 Fixed a problem with the implementation of the LNot() operator where
9981 was not returned for the TRUE case. Changed the code to return Ones
9983 of (!Arg) which was usually 1. This change affects iASL constant folding
9987 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
9989 initialized properly -- Now zero the entire buffer in this case where the
9990 buffer already exists.
9992 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
9993 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
9994 related code considerably. This will require changes/updates to all OS
9995 interface layers (OSLs.)
9997 Implemented a new external interface, AcpiInstallExceptionHandler, to
9999 a system exception handler to be installed. This handler is invoked upon
10001 run-time exception that occurs during control method execution.
10003 Added support for the DSDT in AcpiTbFindTable. This allows the
10004 DataTableRegion() operator to access the local copy of the DSDT.
10006 Code and Data Size: Current and previous core subsystem library sizes are
10007 shown below. These are the code and data sizes for the acpica.lib
10009 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10010 any ACPI driver or OSPM code. The debug version of the code includes the
10011 debug output trace mechanism and has a much larger code and data size.
10013 that these values will vary depending on the efficiency of the compiler
10015 the compiler options used during generation.
10018 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10019 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10021 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10022 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10025 2) iASL Compiler/Disassembler:
10027 Fixed a problem with constant folding and the LNot operator. LNot was
10028 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10030 could result in the generation of an incorrect folded/reduced constant.
10032 End-Of-File is now allowed within a "//"-style comment. A parse error no
10033 longer occurs if such a comment is at the very end of the input ASL
10037 Implemented the "-r" option to override the Revision in the table header.
10038 The initial use of this option will be to simplify the evaluation of the
10040 interpreter by allowing a single ASL source module to be compiled for
10042 32-bit or 64-bit integers.
10045 ----------------------------------------
10046 27 August 2004. Summary of changes for version 20040827:
10048 1) ACPI CA Core Subsystem:
10050 - Implemented support for implicit object conversion in the non-numeric
10051 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10053 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10054 the second operand is implicitly converted on the fly to match the type
10056 the first operand. For example:
10058 LEqual (Source1, Source2)
10060 Source1 and Source2 must each evaluate to an integer, a string, or a
10062 The data type of Source1 dictates the required type of Source2. Source2
10064 implicitly converted if necessary to match the type of Source1.
10066 - Updated and corrected the behavior of the string conversion support.
10068 rules concerning conversion of buffers to strings (according to the ACPI
10069 specification) are as follows:
10071 ToDecimalString - explicit byte-wise conversion of buffer to string of
10072 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10074 conversion of buffer to string of hex values (0-FF) separated by commas.
10075 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10077 copy with no transform except NULL terminated. Any other implicit buffer-
10079 string conversion - byte-wise conversion of buffer to string of hex
10081 (0-FF) separated by spaces.
10083 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10085 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10087 one byte too short in the case of a node in the root scope. This could
10088 cause a fault during debug output.
10090 - Code and Data Size: Current and previous core subsystem library sizes
10092 shown below. These are the code and data sizes for the acpica.lib
10094 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10095 any ACPI driver or OSPM code. The debug version of the code includes the
10096 debug output trace mechanism and has a much larger code and data size.
10098 that these values will vary depending on the efficiency of the compiler
10100 the compiler options used during generation.
10103 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10104 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10106 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10107 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10110 2) iASL Compiler/Disassembler:
10112 - Fixed a Linux generation error.
10115 ----------------------------------------
10116 16 August 2004. Summary of changes for version 20040816:
10118 1) ACPI CA Core Subsystem:
10120 Designed and implemented support within the AML interpreter for the so-
10121 called "implicit return". This support returns the result of the last
10123 operation within a control method, in the absence of an explicit Return()
10124 operator. A few machines depend on this behavior, even though it is not
10125 explicitly supported by the ASL language. It is optional support that
10127 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10129 Removed support for the PCI_Config address space from the internal low
10131 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10132 support was not used internally, and would not work correctly anyway
10134 the PCI bus number and segment number were not supported. There are
10135 separate interfaces for PCI configuration space access because of the
10139 Code and Data Size: Current and previous core subsystem library sizes are
10140 shown below. These are the code and data sizes for the acpica.lib
10142 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10143 any ACPI driver or OSPM code. The debug version of the code includes the
10144 debug output trace mechanism and has a much larger code and data size.
10146 that these values will vary depending on the efficiency of the compiler
10148 the compiler options used during generation.
10151 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10152 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10154 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10155 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10158 2) iASL Compiler/Disassembler:
10160 Fixed a problem where constants in ASL expressions at the root level (not
10161 within a control method) could be inadvertently truncated during code
10162 generation. This problem was introduced in the 20040715 release.
10165 ----------------------------------------
10166 15 July 2004. Summary of changes for version 20040715:
10168 1) ACPI CA Core Subsystem:
10170 Restructured the internal HW GPE interfaces to pass/track the current
10172 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10173 increase flexibility of the interfaces.
10175 Implemented a "lexicographical compare" for String and Buffer objects
10177 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10179 as per further clarification to the ACPI specification. Behavior is
10181 to C library "strcmp".
10183 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10184 external function. In the 32-bit non-debug case, the stack use has been
10185 reduced from 168 bytes to 32 bytes.
10187 Deployed a new run-time configuration flag,
10188 AcpiGbl_EnableInterpreterSlack,
10189 whose purpose is to allow the AML interpreter to forgive certain bad AML
10190 constructs. Default setting is FALSE.
10192 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10194 support code. If enabled, it allows field access to go beyond the end of
10196 region definition if the field is within the region length rounded up to
10198 next access width boundary (a common coding error.)
10200 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10201 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10203 symbols are lowercased by the latest version of the AcpiSrc tool.
10205 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10206 rename "Register" to simply "Reg" to prevent certain compilers from
10209 Code and Data Size: Current and previous core subsystem library sizes are
10210 shown below. These are the code and data sizes for the acpica.lib
10212 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10213 any ACPI driver or OSPM code. The debug version of the code includes the
10214 debug output trace mechanism and has a much larger code and data size.
10216 that these values will vary depending on the efficiency of the compiler
10218 the compiler options used during generation.
10221 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10222 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10224 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10225 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10228 2) iASL Compiler/Disassembler:
10230 Implemented full support for Package objects within the Case() operator.
10231 Note: The Break() operator is currently not supported within Case blocks
10232 (TermLists) as there is some question about backward compatibility with
10237 Fixed a problem where complex terms were not supported properly within
10241 Eliminated extraneous warning for compiler-emitted reserved names of the
10242 form "_T_x". (Used in Switch/Case operators.)
10244 Eliminated optimization messages for "_T_x" objects and small constants
10245 within the DefinitionBlock operator.
10248 ----------------------------------------
10249 15 June 2004. Summary of changes for version 20040615:
10251 1) ACPI CA Core Subsystem:
10253 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10255 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10258 All directory names in the entire source package are lower case, as they
10259 were in earlier releases.
10261 Implemented "Disassemble" command in the AML debugger that will
10263 a single control method.
10265 Code and Data Size: Current and previous core subsystem library sizes are
10266 shown below. These are the code and data sizes for the acpica.lib
10268 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10269 any ACPI driver or OSPM code. The debug version of the code includes the
10270 debug output trace mechanism and has a much larger code and data size.
10272 that these values will vary depending on the efficiency of the compiler
10274 the compiler options used during generation.
10277 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10278 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10281 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10282 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10285 2) iASL Compiler/Disassembler:
10287 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10289 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10292 All directory names in the entire source package are lower case, as they
10293 were in earlier releases.
10295 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10298 Fixed an issue with the Windows version of the compiler where later
10300 of Windows place the FADT in the registry under the name "FADT" and not
10301 "FACP" as earlier versions did. This applies when using the -g or -
10302 d<nofilename> options. The compiler now looks for both strings as
10305 Fixed a problem with compiler namepath optimization where a namepath
10307 the Scope() operator could not be optimized if the namepath was a subpath
10309 the current scope path.
10311 ----------------------------------------
10312 27 May 2004. Summary of changes for version 20040527:
10314 1) ACPI CA Core Subsystem:
10316 Completed a new design and implementation for EBDA (Extended BIOS Data
10318 support in the RSDP scan code. The original code improperly scanned for
10320 EBDA by simply scanning from memory location 0 to 0x400. The correct
10322 is to first obtain the EBDA pointer from within the BIOS data area, then
10323 scan 1K of memory starting at the EBDA pointer. There appear to be few
10325 any machines that place the RSDP in the EBDA, however.
10327 Integrated a fix for a possible fault during evaluation of BufferField
10328 arguments. Obsolete code that was causing the problem was removed.
10330 Found and fixed a problem in the Field Support Code where data could be
10331 corrupted on a bit field read that starts on an aligned boundary but does
10332 not end on an aligned boundary. Merged the read/write "datum length"
10333 calculation code into a common procedure.
10335 Rolled in a couple of changes to the FreeBSD-specific header.
10338 Code and Data Size: Current and previous core subsystem library sizes are
10339 shown below. These are the code and data sizes for the acpica.lib
10341 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10342 any ACPI driver or OSPM code. The debug version of the code includes the
10343 debug output trace mechanism and has a much larger code and data size.
10345 that these values will vary depending on the efficiency of the compiler
10347 the compiler options used during generation.
10350 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10351 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10353 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10354 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10357 2) iASL Compiler/Disassembler:
10359 Fixed a generation warning produced by some overly-verbose compilers for
10363 ----------------------------------------
10364 14 May 2004. Summary of changes for version 20040514:
10366 1) ACPI CA Core Subsystem:
10368 Fixed a problem where hardware GPE enable bits sometimes not set properly
10369 during and after GPE method execution. Result of 04/27 changes.
10371 Removed extra "clear all GPEs" when sleeping/waking.
10373 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10374 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10376 the new AcpiEv* calls as appropriate.
10378 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10380 now "Microsoft Windows NT" for maximum compatibility. However this can
10382 changed by modifying the acconfig.h file.
10384 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10385 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10387 Run _INI methods on ThermalZone objects. This is against the ACPI
10388 specification, but there is apparently ASL code in the field that has
10390 _INI methods, and apparently "other" AML interpreters execute them.
10392 Performed a full 16/32/64 bit lint that resulted in some small changes.
10394 Added a sleep simulation command to the AML debugger to test sleep code.
10396 Code and Data Size: Current and previous core subsystem library sizes are
10397 shown below. These are the code and data sizes for the acpica.lib
10399 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10400 any ACPI driver or OSPM code. The debug version of the code includes the
10401 debug output trace mechanism and has a much larger code and data size.
10403 that these values will vary depending on the efficiency of the compiler
10405 the compiler options used during generation.
10408 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10409 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10411 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10412 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10414 ----------------------------------------
10415 27 April 2004. Summary of changes for version 20040427:
10417 1) ACPI CA Core Subsystem:
10419 Completed a major overhaul of the GPE handling within ACPI CA. There are
10420 now three types of GPEs: wake-only, runtime-only, and combination
10422 The only GPEs allowed to be combination wake/run are for button-style
10423 devices such as a control-method power button, control-method sleep
10425 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
10427 referenced by any _PRW methods are marked for "runtime" and hardware
10428 enabled. Any GPE that is referenced by a _PRW method is marked for
10430 (and disabled at runtime). However, at sleep time, only those GPEs that
10431 have been specifically enabled for wake via the AcpiEnableGpe interface
10433 actually be hardware enabled.
10435 A new external interface has been added, AcpiSetGpeType(), that is meant
10437 be used by device drivers to force a GPE to a particular type. It will
10439 especially useful for the drivers for the button devices mentioned above.
10441 Completed restructuring of the ACPI CA initialization sequence so that
10442 default operation region handlers are installed before GPEs are
10444 and the _PRW methods are executed. This will prevent errors when the
10446 methods attempt to access system memory or I/O space.
10448 GPE enable/disable no longer reads the GPE enable register. We now keep
10450 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
10451 thus no longer depend on the hardware to maintain these bits.
10453 Always clear the wake status and fixed/GPE status bits before sleep, even
10456 Improved the AML debugger output for displaying the GPE blocks and their
10459 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
10463 Fixed a problem where the physical address was incorrectly calculated
10465 the Load() operator was used to directly load from an Operation Region
10467 loading from a Field object.) Also added check for minimum table length
10471 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
10474 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
10475 consistency with the other fields returned.
10477 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
10478 structure for each GPE in the system, so the size of this structure is
10481 CPU stack requirement reduction: Cleaned up the method execution and
10483 evaluation paths so that now a parameter structure is passed, instead of
10484 copying the various method parameters over and over again.
10486 In evregion.c: Correctly exit and reenter the interpreter region if and
10487 only if dispatching an operation region request to a user-installed
10489 Do not exit/reenter when dispatching to a default handler (e.g., default
10490 system memory or I/O handlers)
10493 Notes for updating drivers for the new GPE support. The following
10495 must be made to ACPI-related device drivers that are attached to one or
10497 GPEs: (This information will be added to the ACPI CA Programmer
10500 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
10502 explicitly call AcpiEnableGpe.
10503 2) There is a new interface called AcpiSetGpeType. This should be called
10504 before enabling the GPE. Also, this interface will automatically disable
10505 the GPE if it is currently enabled.
10506 3) AcpiEnableGpe no longer supports a GPE type flag.
10508 Specific drivers that must be changed:
10510 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
10511 AeGpeHandler, NULL);
10512 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
10513 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
10515 2) Button Drivers (Power, Lid, Sleep):
10516 Run _PRW method under parent device
10517 If _PRW exists: /* This is a control-method button */
10518 Extract GPE number and possibly GpeDevice
10519 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
10520 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
10522 For all other devices that have _PRWs, we automatically set the GPE type
10524 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
10526 must be done on a selective basis, usually requiring some kind of user
10528 to allow the user to pick the wake devices.
10531 Code and Data Size: Current and previous core subsystem library sizes are
10532 shown below. These are the code and data sizes for the acpica.lib
10534 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10535 any ACPI driver or OSPM code. The debug version of the code includes the
10536 debug output trace mechanism and has a much larger code and data size.
10538 that these values will vary depending on the efficiency of the compiler
10540 the compiler options used during generation.
10543 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10544 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10547 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10548 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10552 ----------------------------------------
10553 02 April 2004. Summary of changes for version 20040402:
10555 1) ACPI CA Core Subsystem:
10557 Fixed an interpreter problem where an indirect store through an ArgX
10558 parameter was incorrectly applying the "implicit conversion rules" during
10559 the store. From the ACPI specification: "If the target is a method local
10561 argument (LocalX or ArgX), no conversion is performed and the result is
10562 stored directly to the target". The new behavior is to disable implicit
10563 conversion during ALL stores to an ArgX.
10565 Changed the behavior of the _PRW method scan to ignore any and all errors
10566 returned by a given _PRW. This prevents the scan from aborting from the
10567 failure of any single _PRW.
10569 Moved the runtime configuration parameters from the global init procedure
10571 static variables in acglobal.h. This will allow the host to override the
10572 default values easily.
10574 Code and Data Size: Current and previous core subsystem library sizes are
10575 shown below. These are the code and data sizes for the acpica.lib
10577 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10578 any ACPI driver or OSPM code. The debug version of the code includes the
10579 debug output trace mechanism and has a much larger code and data size.
10581 that these values will vary depending on the efficiency of the compiler
10583 the compiler options used during generation.
10586 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10587 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10589 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10590 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10593 2) iASL Compiler/Disassembler:
10595 iASL now fully disassembles SSDTs. However, External() statements are
10597 generated automatically for unresolved symbols at this time. This is a
10598 planned feature for future implementation.
10600 Fixed a scoping problem in the disassembler that occurs when the type of
10602 target of a Scope() operator is overridden. This problem caused an
10603 incorrectly nested internal namespace to be constructed.
10605 Any warnings or errors that are emitted during disassembly are now
10607 out automatically so that the resulting file can be recompiled without
10611 ----------------------------------------
10612 26 March 2004. Summary of changes for version 20040326:
10614 1) ACPI CA Core Subsystem:
10616 Implemented support for "wake" GPEs via interaction between GPEs and the
10617 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
10618 identified as a WAKE GPE and by default will no longer be enabled at
10619 runtime. Previously, we were blindly enabling all GPEs with a
10621 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
10623 believe this has been the cause of thousands of "spurious" GPEs on some
10626 This new GPE behavior is can be reverted to the original behavior (enable
10627 ALL GPEs at runtime) via a runtime flag.
10629 Fixed a problem where aliased control methods could not access objects
10630 properly. The proper scope within the namespace was not initialized
10631 (transferred to the target of the aliased method) before executing the
10634 Fixed a potential race condition on internal object deletion on the
10636 object in AcpiEvaluateObject.
10638 Integrated a fix for resource descriptors where both _MEM and _MTP were
10639 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
10640 wide, 0x0F instead of 0x03.)
10642 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
10645 fault in some cases.
10647 Updated Notify() values for debug statements in evmisc.c
10649 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
10651 Code and Data Size: Current and previous core subsystem library sizes are
10652 shown below. These are the code and data sizes for the acpica.lib
10654 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10655 any ACPI driver or OSPM code. The debug version of the code includes the
10656 debug output trace mechanism and has a much larger code and data size.
10658 that these values will vary depending on the efficiency of the compiler
10660 the compiler options used during generation.
10664 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10665 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10667 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10668 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10670 ----------------------------------------
10671 11 March 2004. Summary of changes for version 20040311:
10673 1) ACPI CA Core Subsystem:
10675 Fixed a problem where errors occurring during the parse phase of control
10676 method execution did not abort cleanly. For example, objects created and
10677 installed in the namespace were not deleted. This caused all subsequent
10678 invocations of the method to return the AE_ALREADY_EXISTS exception.
10680 Implemented a mechanism to force a control method to "Serialized"
10682 if the method attempts to create namespace objects. (The root of the
10683 AE_ALREADY_EXISTS problem.)
10685 Implemented support for the predefined _OSI "internal" control method.
10686 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
10688 "Windows 2001.1", and can be easily upgraded for new strings as
10690 This feature will allow "other" operating systems to execute the fully
10691 tested, "Windows" code path through the ASL code
10693 Global Lock Support: Now allows multiple acquires and releases with any
10694 internal thread. Removed concept of "owning thread" for this special
10697 Fixed two functions that were inappropriately declaring large objects on
10699 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
10701 method execution considerably.
10703 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
10704 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
10706 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
10707 defined on the machine.
10709 Implemented two runtime options: One to force all control method
10711 to "Serialized" to mimic Windows behavior, another to disable _OSI
10713 if it causes problems on a given machine.
10715 Code and Data Size: Current and previous core subsystem library sizes are
10716 shown below. These are the code and data sizes for the acpica.lib
10718 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10719 any ACPI driver or OSPM code. The debug version of the code includes the
10720 debug output trace mechanism and has a much larger code and data size.
10722 that these values will vary depending on the efficiency of the compiler
10724 the compiler options used during generation.
10727 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10728 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10730 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10731 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10733 2) iASL Compiler/Disassembler:
10735 Fixed an array size problem for FreeBSD that would cause the compiler to
10738 ----------------------------------------
10739 20 February 2004. Summary of changes for version 20040220:
10742 1) ACPI CA Core Subsystem:
10744 Implemented execution of _SxD methods for Device objects in the
10745 GetObjectInfo interface.
10747 Fixed calls to _SST method to pass the correct arguments.
10749 Added a call to _SST on wake to restore to "working" state.
10751 Check for End-Of-Buffer failure case in the WalkResources interface.
10753 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
10754 structures to the beginning of the file.
10756 After wake, clear GPE status register(s) before enabling GPEs.
10758 After wake, clear/enable power button. (Perhaps we should clear/enable
10760 fixed events upon wake.)
10762 Fixed a couple of possible memory leaks in the Namespace manager.
10764 Integrated latest acnetbsd.h file.
10766 ----------------------------------------
10767 11 February 2004. Summary of changes for version 20040211:
10770 1) ACPI CA Core Subsystem:
10772 Completed investigation and implementation of the call-by-reference
10773 mechanism for control method arguments.
10775 Fixed a problem where a store of an object into an indexed package could
10776 fail if the store occurs within a different method than the method that
10777 created the package.
10779 Fixed a problem where the ToDecimal operator could return incorrect
10782 Fixed a problem where the CopyObject operator could fail on some of the
10784 obscure objects (e.g., Reference objects.)
10786 Improved the output of the Debug object to display buffer, package, and
10789 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
10791 the expected result.
10793 Added permanent ACPI_REPORT_ERROR macros for all instances of the
10794 ACPI_AML_INTERNAL exception.
10796 Integrated latest version of acfreebsd.h
10798 ----------------------------------------
10799 16 January 2004. Summary of changes for version 20040116:
10801 The purpose of this release is primarily to update the copyright years in
10802 each module, thus causing a huge number of diffs. There are a few small
10803 functional changes, however.
10805 1) ACPI CA Core Subsystem:
10807 Improved error messages when there is a problem finding one or more of
10809 required base ACPI tables
10811 Reintroduced the definition of APIC_HEADER in actbl.h
10813 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
10815 Removed extraneous reference to NewObj in dsmthdat.c
10819 Fixed a problem introduced in December that disabled the correct
10821 of Resource Templates
10824 ----------------------------------------
10825 03 December 2003. Summary of changes for version 20031203:
10827 1) ACPI CA Core Subsystem:
10829 Changed the initialization of Operation Regions during subsystem
10830 init to perform two entire walks of the ACPI namespace; The first
10831 to initialize the regions themselves, the second to execute the
10832 _REG methods. This fixed some interdependencies across _REG
10833 methods found on some machines.
10835 Fixed a problem where a Store(Local0, Local1) could simply update
10836 the object reference count, and not create a new copy of the
10837 object if the Local1 is uninitialized.
10839 Implemented support for the _SST reserved method during sleep
10842 Implemented support to clear the SLP_TYP and SLP_EN bits when
10843 waking up, this is apparently required by some machines.
10845 When sleeping, clear the wake status only if SleepState is not S5.
10847 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
10848 pointer arithmetic advanced a string pointer too far.
10850 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
10851 could be returned if the requested table has not been loaded.
10853 Within the support for IRQ resources, restructured the handling of
10854 the active and edge/level bits.
10856 Fixed a few problems in AcpiPsxExecute() where memory could be
10857 leaked under certain error conditions.
10859 Improved error messages for the cases where the ACPI mode could
10862 Code and Data Size: Current and previous core subsystem library
10863 sizes are shown below. These are the code and data sizes for the
10864 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10865 these values do not include any ACPI driver or OSPM code. The
10866 debug version of the code includes the debug output trace
10867 mechanism and has a much larger code and data size. Note that
10868 these values will vary depending on the efficiency of the compiler
10869 and the compiler options used during generation.
10871 Previous Release (20031029):
10872 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10873 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10875 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10876 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10878 2) iASL Compiler/Disassembler:
10880 Implemented a fix for the iASL disassembler where a bad index was
10881 generated. This was most noticeable on 64-bit platforms
10884 ----------------------------------------
10885 29 October 2003. Summary of changes for version 20031029:
10887 1) ACPI CA Core Subsystem:
10890 Fixed a problem where a level-triggered GPE with an associated
10891 _Lxx control method was incorrectly cleared twice.
10893 Fixed a problem with the Field support code where an access can
10894 occur beyond the end-of-region if the field is non-aligned but
10895 extends to the very end of the parent region (resulted in an
10896 AE_AML_REGION_LIMIT exception.)
10898 Fixed a problem with ACPI Fixed Events where an RT Clock handler
10899 would not get invoked on an RTC event. The RTC event bitmasks for
10900 the PM1 registers were not being initialized properly.
10902 Implemented support for executing _STA and _INI methods for
10903 Processor objects. Although this is currently not part of the
10904 ACPI specification, there is existing ASL code that depends on the
10905 init-time execution of these methods.
10907 Implemented and deployed a GetDescriptorName function to decode
10908 the various types of internal descriptors. Guards against null
10909 descriptors during debug output also.
10911 Implemented and deployed a GetNodeName function to extract the 4-
10912 character namespace node name. This function simplifies the debug
10913 and error output, as well as guarding against null pointers during
10916 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
10917 simplify the debug and error output of 64-bit integers. This
10918 macro replaces the HIDWORD and LODWORD macros for dumping these
10921 Updated the implementation of the Stall() operator to only call
10922 AcpiOsStall(), and also return an error if the operand is larger
10923 than 255. This preserves the required behavior of not
10924 relinquishing the processor, as would happen if AcpiOsSleep() was
10925 called for "long stalls".
10927 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
10928 initialized are now treated as NOOPs.
10930 Cleaned up a handful of warnings during 64-bit generation.
10932 Fixed a reported error where and incorrect GPE number was passed
10933 to the GPE dispatch handler. This value is only used for error
10934 output, however. Used this opportunity to clean up and streamline
10935 the GPE dispatch code.
10937 Code and Data Size: Current and previous core subsystem library
10938 sizes are shown below. These are the code and data sizes for the
10939 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10940 these values do not include any ACPI driver or OSPM code. The
10942 debug version of the code includes the debug output trace
10943 mechanism and has a much larger code and data size. Note that
10944 these values will vary depending on the efficiency of the compiler
10945 and the compiler options used during generation.
10947 Previous Release (20031002):
10948 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
10949 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
10951 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10952 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10955 2) iASL Compiler/Disassembler:
10957 Updated the iASL compiler to return an error if the operand to the
10958 Stall() operator is larger than 255.
10961 ----------------------------------------
10962 02 October 2003. Summary of changes for version 20031002:
10965 1) ACPI CA Core Subsystem:
10967 Fixed a problem with Index Fields where the index was not
10968 incremented for fields that require multiple writes to the
10969 index/data registers (Fields that are wider than the data
10972 Fixed a problem with all Field objects where a write could go
10973 beyond the end-of-field if the field was larger than the access
10974 granularity and therefore required multiple writes to complete the
10975 request. An extra write beyond the end of the field could happen
10978 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
10979 would incorrectly be returned if the width of the Data Register
10980 was larger than the specified field access width.
10982 Completed fixes for LoadTable() and Unload() and verified their
10983 operation. Implemented full support for the "DdbHandle" object
10984 throughout the ACPI CA subsystem.
10986 Implemented full support for the MADT and ECDT tables in the ACPI
10987 CA header files. Even though these tables are not directly
10988 consumed by ACPI CA, the header definitions are useful for ACPI
10991 Integrated resource descriptor fixes posted to the Linux ACPI
10992 list. This included checks for minimum descriptor length, and
10993 support for trailing NULL strings within descriptors that have
10994 optional string elements.
10996 Code and Data Size: Current and previous core subsystem library
10997 sizes are shown below. These are the code and data sizes for the
10998 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10999 these values do not include any ACPI driver or OSPM code. The
11000 debug version of the code includes the debug output trace
11001 mechanism and has a much larger code and data size. Note that
11002 these values will vary depending on the efficiency of the compiler
11003 and the compiler options used during generation.
11005 Previous Release (20030918):
11006 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11007 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11009 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11010 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11015 Implemented detection of non-ASCII characters within the input
11016 source ASL file. This catches attempts to compile binary (AML)
11017 files early in the compile, with an informative error message.
11019 Fixed a problem where the disassembler would fault if the output
11020 filename could not be generated or if the output file could not be
11023 ----------------------------------------
11024 18 September 2003. Summary of changes for version 20030918:
11027 1) ACPI CA Core Subsystem:
11029 Found and fixed a longstanding problem with the late execution of
11030 the various deferred AML opcodes (such as Operation Regions,
11031 Buffer Fields, Buffers, and Packages). If the name string
11032 specified for the name of the new object placed the object in a
11033 scope other than the current scope, the initialization/execution
11034 of the opcode failed. The solution to this problem was to
11035 implement a mechanism where the late execution of such opcodes
11036 does not attempt to lookup/create the name a second time in an
11037 incorrect scope. This fixes the "region size computed
11038 incorrectly" problem.
11040 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11041 Global Lock AE_BAD_PARAMETER error.
11043 Fixed several 64-bit issues with prototypes, casting and data
11046 Removed duplicate prototype from acdisasm.h
11048 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11050 Code and Data Size: Current and previous core subsystem library
11051 sizes are shown below. These are the code and data sizes for the
11052 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11053 these values do not include any ACPI driver or OSPM code. The
11054 debug version of the code includes the debug output trace
11055 mechanism and has a much larger code and data size. Note that
11056 these values will vary depending on the efficiency of the compiler
11057 and the compiler options used during generation.
11061 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11062 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11064 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11065 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11070 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11071 correct sleep time in seconds.
11073 ----------------------------------------
11074 14 July 2003. Summary of changes for version 20030619:
11076 1) ACPI CA Core Subsystem:
11078 Parse SSDTs in order discovered, as opposed to reverse order
11081 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11088 Dynamically allocate SDT list (suggested by Andi Kleen)
11090 proc function return value cleanups (Andi Kleen)
11092 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11094 Make it so acpismp=force works (reported by Andrew Morton)
11097 ----------------------------------------
11098 19 June 2003. Summary of changes for version 20030619:
11100 1) ACPI CA Core Subsystem:
11102 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11104 Do not acquire a semaphore in the S5 shutdown path.
11106 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11108 Fix sleep/stall code reversal. (Andi Kleen)
11110 Revert a change having to do with control method calling
11115 acpiphp update (Takayoshi Kochi)
11117 Export acpi_disabled for sonypi (Stelian Pop)
11119 Mention acpismp=force in config help
11121 Re-add acpitable.c and acpismp=force. This improves backwards
11123 compatibility and also cleans up the code to a significant degree.
11125 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11127 ----------------------------------------
11128 22 May 2003. Summary of changes for version 20030522:
11130 1) ACPI CA Core Subsystem:
11132 Found and fixed a reported problem where an AE_NOT_FOUND error
11133 occurred occasionally during _BST evaluation. This turned out to
11134 be an Owner ID allocation issue where a called method did not get
11135 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11136 ID UINT16 would wraparound so that the ID would be the same as the
11137 caller's and the called method would delete the caller's
11140 Implemented extended error reporting for control methods that are
11141 aborted due to a run-time exception. Output includes the exact
11142 AML instruction that caused the method abort, a dump of the method
11143 locals and arguments at the time of the abort, and a trace of all
11144 nested control method calls.
11146 Modified the interpreter to allow the creation of buffers of zero
11147 length from the AML code. Implemented new code to ensure that no
11148 attempt is made to actually allocate a memory buffer (of length
11149 zero) - instead, a simple buffer object with a NULL buffer pointer
11150 and length zero is created. A warning is no longer issued when
11151 the AML attempts to create a zero-length buffer.
11153 Implemented a workaround for the "leading asterisk issue" in
11154 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11155 asterisk is automatically removed if present in any HID, UID, or
11156 CID strings. The iASL compiler will still flag this asterisk as
11159 Implemented full support for _CID methods that return a package of
11160 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11161 now additionally returns a device _CID list if present. This
11162 required a change to the external interface in order to pass an
11163 ACPI_BUFFER object as a parameter since the _CID list is of
11166 Fixed a problem with the new AE_SAME_HANDLER exception where
11167 handler initialization code did not know about this exception.
11169 Code and Data Size: Current and previous core subsystem library
11170 sizes are shown below. These are the code and data sizes for the
11171 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11172 these values do not include any ACPI driver or OSPM code. The
11173 debug version of the code includes the debug output trace
11174 mechanism and has a much larger code and data size. Note that
11175 these values will vary depending on the efficiency of the compiler
11176 and the compiler options used during generation.
11178 Previous Release (20030509):
11179 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11180 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11182 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11183 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11188 Fixed a bug in which we would reinitialize the ACPI interrupt
11189 after it was already working, thus disabling all ACPI and the IRQs
11190 for any other device sharing the interrupt. (Thanks to Stian
11193 Toshiba driver update (John Belmonte)
11195 Return only 0 or 1 for our interrupt handler status (Andrew
11201 Fixed a reported problem where multiple (nested) ElseIf()
11202 statements were not handled correctly by the compiler, resulting
11203 in incorrect warnings and incorrect AML code. This was a problem
11204 in both the ASL parser and the code generator.
11209 Added changes to existing interfaces, new exception codes, and new
11210 text concerning reference count object management versus garbage
11213 ----------------------------------------
11214 09 May 2003. Summary of changes for version 20030509.
11217 1) ACPI CA Core Subsystem:
11219 Changed the subsystem initialization sequence to hold off
11220 installation of address space handlers until the hardware has been
11221 initialized and the system has entered ACPI mode. This is because
11222 the installation of space handlers can cause _REG methods to be
11223 run. Previously, the _REG methods could potentially be run before
11224 ACPI mode was enabled.
11226 Fixed some memory leak issues related to address space handler and
11227 notify handler installation. There were some problems with the
11228 reference count mechanism caused by the fact that the handler
11229 objects are shared across several namespace objects.
11231 Fixed a reported problem where reference counts within the
11232 namespace were not properly updated when named objects created by
11233 method execution were deleted.
11235 Fixed a reported problem where multiple SSDTs caused a deletion
11236 issue during subsystem termination. Restructured the table data
11237 structures to simplify the linked lists and the related code.
11239 Fixed a problem where the table ID associated with secondary
11240 tables (SSDTs) was not being propagated into the namespace objects
11241 created by those tables. This would only present a problem for
11242 tables that are unloaded at run-time, however.
11244 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11245 type as the length parameter (instead of UINT32).
11247 Solved a long-standing problem where an ALREADY_EXISTS error
11248 appears on various systems. This problem could happen when there
11249 are multiple PCI_Config operation regions under a single PCI root
11250 bus. This doesn't happen very frequently, but there are some
11251 systems that do this in the ASL.
11253 Fixed a reported problem where the internal DeleteNode function
11254 was incorrectly handling the case where a namespace node was the
11255 first in the parent's child list, and had additional peers (not
11256 the only child, but first in the list of children.)
11258 Code and Data Size: Current core subsystem library sizes are shown
11259 below. These are the code and data sizes for the acpica.lib
11260 produced by the Microsoft Visual C++ 6.0 compiler, and these
11261 values do not include any ACPI driver or OSPM code. The debug
11262 version of the code includes the debug output trace mechanism and
11263 has a much larger code and data size. Note that these values will
11264 vary depending on the efficiency of the compiler and the compiler
11265 options used during generation.
11268 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11269 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11271 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11272 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11277 Allow ":" in OS override string (Ducrot Bruno)
11279 Kobject fix (Greg KH)
11282 3 iASL Compiler/Disassembler:
11284 Fixed a problem in the generation of the C source code files (AML
11285 is emitted in C source statements for BIOS inclusion) where the
11286 Ascii dump that appears within a C comment at the end of each line
11287 could cause a compile time error if the AML sequence happens to
11288 have an open comment or close comment sequence embedded.
11291 ----------------------------------------
11292 24 April 2003. Summary of changes for version 20030424.
11295 1) ACPI CA Core Subsystem:
11297 Support for big-endian systems has been implemented. Most of the
11298 support has been invisibly added behind big-endian versions of the
11299 ACPI_MOVE_* macros.
11301 Fixed a problem in AcpiHwDisableGpeBlock() and
11302 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11303 low level hardware write routine. The offset parameter was
11304 actually eliminated from the low level read/write routines because
11305 they had become obsolete.
11307 Fixed a problem where a handler object was deleted twice during
11308 the removal of a fixed event handler.
11313 A fix for SMP systems with link devices was contributed by
11317 (2.5) Return whether we handled the interrupt in our IRQ handler.
11318 (Linux ISRs no longer return void, so we can propagate the handler
11319 return value from the ACPI CA core back to the OS.)
11325 The ACPI CA Programmer Reference has been updated to reflect new
11326 interfaces and changes to existing interfaces.
11328 ----------------------------------------
11329 28 March 2003. Summary of changes for version 20030328.
11331 1) ACPI CA Core Subsystem:
11333 The GPE Block Device support has been completed. New interfaces
11334 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11335 interfaces (enable, disable, clear, getstatus) have been split
11336 into separate interfaces for Fixed Events and General Purpose
11337 Events (GPEs) in order to support GPE Block Devices properly.
11339 Fixed a problem where the error message "Failed to acquire
11340 semaphore" would appear during operations on the embedded
11343 Code and Data Size: Current core subsystem library sizes are shown
11344 below. These are the code and data sizes for the acpica.lib
11345 produced by the Microsoft Visual C++ 6.0 compiler, and these
11346 values do not include any ACPI driver or OSPM code. The debug
11347 version of the code includes the debug output trace mechanism and
11348 has a much larger code and data size. Note that these values will
11349 vary depending on the efficiency of the compiler and the compiler
11350 options used during generation.
11353 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11354 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11356 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11357 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11360 ----------------------------------------
11361 28 February 2003. Summary of changes for version 20030228.
11364 1) ACPI CA Core Subsystem:
11366 The GPE handling and dispatch code has been completely overhauled
11367 in preparation for support of GPE Block Devices (ID ACPI0006).
11368 This affects internal data structures and code only; there should
11369 be no differences visible externally. One new file has been
11372 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11373 fields that are used to determine the GPE block lengths. The
11374 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11375 structures are ignored. This is per the ACPI specification but it
11376 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11377 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11379 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11380 register to look at the SCI_EN bit. On some machines, this read
11381 causes an SMI event and greatly slows down SCI events. (This may
11382 in fact be the cause of slow battery status response on some
11385 Fixed a problem where a store of a NULL string to a package object
11386 could cause the premature deletion of the object. This was seen
11387 during execution of the battery _BIF method on some systems,
11388 resulting in no battery data being returned.
11390 Added AcpiWalkResources interface to simplify parsing of resource
11393 Code and Data Size: Current core subsystem library sizes are shown
11394 below. These are the code and data sizes for the acpica.lib
11395 produced by the Microsoft Visual C++ 6.0 compiler, and these
11396 values do not include any ACPI driver or OSPM code. The debug
11397 version of the code includes the debug output trace mechanism and
11398 has a much larger code and data size. Note that these values will
11399 vary depending on the efficiency of the compiler and the compiler
11400 options used during generation.
11403 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11404 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11406 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11407 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11412 S3 fixes (Ole Rohne)
11414 Update ACPI PHP driver with to use new acpi_walk_resource API
11417 Add S4BIOS support (Pavel Machek)
11419 Map in entire table before performing checksum (John Stultz)
11421 Expand the mem= cmdline to allow the specification of reserved and
11422 ACPI DATA blocks (Pavel Machek)
11424 Never use ACPI on VISWS
11426 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
11428 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
11429 causing us to think that some systems support C2 when they really
11432 Do not count processor objects for non-present CPUs (Thanks to
11438 Fixed a problem where ASL include files could not be found and
11441 Added support for the _PDC reserved name.
11444 ----------------------------------------
11445 22 January 2003. Summary of changes for version 20030122.
11448 1) ACPI CA Core Subsystem:
11450 Added a check for constructs of the form: Store (Local0, Local0)
11451 where Local0 is not initialized. Apparently, some BIOS
11452 programmers believe that this is a NOOP. Since this store doesn't
11453 do anything anyway, the new prototype behavior will ignore this
11454 error. This is a case where we can relax the strict checking in
11455 the interpreter in the name of compatibility.
11460 The AcpiSrc Source Conversion Utility has been released with the
11461 Linux package for the first time. This is the utility that is
11462 used to convert the ACPI CA base source code to the Linux version.
11464 (Both) Handle P_BLK lengths shorter than 6 more gracefully
11466 (Both) Move more headers to include/acpi, and delete an unused
11469 (Both) Move drivers/acpi/include directory to include/acpi
11471 (Both) Boot functions don't use cmdline, so don't pass it around
11473 (Both) Remove include of unused header (Adrian Bunk)
11475 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
11477 former now also includes the latter, acpiphp.h only needs the one,
11480 (2.5) Make it possible to select method of bios restoring after S3
11481 resume. [=> no more ugly ifdefs] (Pavel Machek)
11483 (2.5) Make proc write interfaces work (Pavel Machek)
11485 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
11487 (2.5) Break out ACPI Perf code into its own module, under cpufreq
11488 (Dominik Brodowski)
11490 (2.4) S4BIOS support (Ducrot Bruno)
11492 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
11498 Added support to disassemble SSDT and PSDTs.
11500 Implemented support to obtain SSDTs from the Windows registry if
11504 ----------------------------------------
11505 09 January 2003. Summary of changes for version 20030109.
11507 1) ACPI CA Core Subsystem:
11509 Changed the behavior of the internal Buffer-to-String conversion
11510 function. The current ACPI specification states that the contents
11511 of the buffer are "converted to a string of two-character
11512 hexadecimal numbers, each separated by a space". Unfortunately,
11513 this definition is not backwards compatible with existing ACPI 1.0
11514 implementations (although the behavior was not defined in the ACPI
11515 1.0 specification). The new behavior simply copies data from the
11516 buffer to the string until a null character is found or the end of
11517 the buffer is reached. The new String object is always null
11518 terminated. This problem was seen during the generation of _BIF
11519 battery data where incorrect strings were returned for battery
11520 type, etc. This will also require an errata to the ACPI
11523 Renamed all instances of NATIVE_UINT and NATIVE_INT to
11524 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
11526 Copyright in all module headers (both Linux and non-Linux) has be
11529 Code and Data Size: Current core subsystem library sizes are shown
11530 below. These are the code and data sizes for the acpica.lib
11531 produced by the Microsoft Visual C++ 6.0 compiler, and these
11532 values do not include any ACPI driver or OSPM code. The debug
11533 version of the code includes the debug output trace mechanism and
11534 has a much larger code and data size. Note that these values will
11535 vary depending on the efficiency of the compiler and the compiler
11536 options used during generation.
11539 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11540 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11542 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11543 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11548 Fixed an oops on module insertion/removal (Matthew Tippett)
11550 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
11552 (2.5) Replace pr_debug (Randy Dunlap)
11554 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
11556 (Both) Eliminate spawning of thread from timer callback, in favor
11559 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
11561 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
11563 (Both) Add missing statics to button.c (Pavel Machek)
11565 Several changes have been made to the source code translation
11566 utility that generates the Linux Code in order to make the code
11569 All typedefs on structs and unions have been removed in keeping
11570 with the Linux coding style.
11572 Removed the non-Linux SourceSafe module revision number from each
11575 Completed major overhaul of symbols to be lowercased for linux.
11576 Doubled the number of symbols that are lowercased.
11578 Fixed a problem where identifiers within procedure headers and
11579 within quotes were not fully lower cased (they were left with a
11582 Some C macros whose only purpose is to allow the generation of 16-
11583 bit code are now completely removed in the Linux code, increasing
11584 readability and maintainability.
11586 ----------------------------------------
11588 12 December 2002. Summary of changes for version 20021212.
11591 1) ACPI CA Core Subsystem:
11593 Fixed a problem where the creation of a zero-length AML Buffer
11594 would cause a fault.
11596 Fixed a problem where a Buffer object that pointed to a static AML
11597 buffer (in an ACPI table) could inadvertently be deleted, causing
11600 Fixed a problem where a user buffer (passed in to the external
11601 ACPI CA interfaces) could be overwritten if the buffer was too
11602 small to complete the operation, causing memory corruption.
11604 Fixed a problem in the Buffer-to-String conversion code where a
11605 string of length one was always returned, regardless of the size
11606 of the input Buffer object.
11608 Removed the NATIVE_CHAR data type across the entire source due to
11609 lack of need and lack of consistent use.
11611 Code and Data Size: Current core subsystem library sizes are shown
11612 below. These are the code and data sizes for the acpica.lib
11613 produced by the Microsoft Visual C++ 6.0 compiler, and these
11614 values do not include any ACPI driver or OSPM code. The debug
11615 version of the code includes the debug output trace mechanism and
11616 has a much larger code and data size. Note that these values will
11617 vary depending on the efficiency of the compiler and the compiler
11618 options used during generation.
11621 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11622 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11624 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11625 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11628 ----------------------------------------
11629 05 December 2002. Summary of changes for version 20021205.
11631 1) ACPI CA Core Subsystem:
11633 Fixed a problem where a store to a String or Buffer object could
11634 cause corruption of the DSDT if the object type being stored was
11635 the same as the target object type and the length of the object
11636 being stored was equal to or smaller than the original (existing)
11637 target object. This was seen to cause corruption of battery _BIF
11638 buffers if the _BIF method modified the buffer on the fly.
11640 Fixed a problem where an internal error was generated if a control
11641 method invocation was used in an OperationRegion, Buffer, or
11642 Package declaration. This was caused by the deferred parsing of
11643 the control method and thus the deferred creation of the internal
11644 method object. The solution to this problem was to create the
11645 internal method object at the moment the method is encountered in
11646 the first pass - so that subsequent references to the method will
11647 able to obtain the required parameter count and thus properly
11648 parse the method invocation. This problem presented itself as an
11649 AE_AML_INTERNAL during the pass 1 parse phase during table load.
11651 Fixed a problem where the internal String object copy routine did
11652 not always allocate sufficient memory for the target String object
11653 and caused memory corruption. This problem was seen to cause
11654 "Allocation already present in list!" errors as memory allocation
11657 Implemented a new function for the evaluation of namespace objects
11658 that allows the specification of the allowable return object
11659 types. This simplifies a lot of code that checks for a return
11660 object of one or more specific objects returned from the
11661 evaluation (such as _STA, etc.) This may become and external
11662 function if it would be useful to ACPI-related drivers.
11664 Completed another round of prefixing #defines with "ACPI_" for
11667 Completed additional code restructuring to allow more modular
11668 linking for iASL compiler and AcpiExec. Several files were split
11669 creating new files. New files: nsparse.c dsinit.c evgpe.c
11671 Implemented an abort mechanism to terminate an executing control
11672 method via the AML debugger. This feature is useful for debugging
11673 control methods that depend (wait) for specific hardware
11676 Code and Data Size: Current core subsystem library sizes are shown
11677 below. These are the code and data sizes for the acpica.lib
11678 produced by the Microsoft Visual C++ 6.0 compiler, and these
11679 values do not include any ACPI driver or OSPM code. The debug
11680 version of the code includes the debug output trace mechanism and
11681 has a much larger code and data size. Note that these values will
11682 vary depending on the efficiency of the compiler and the compiler
11683 options used during generation.
11686 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11687 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11689 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11690 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11693 2) iASL Compiler/Disassembler
11695 Fixed a compiler code generation problem for "Interrupt" Resource
11696 Descriptors. If specified in the ASL, the optional "Resource
11697 Source Index" and "Resource Source" fields were not inserted into
11698 the correct location within the AML resource descriptor, creating
11699 an invalid descriptor.
11701 Fixed a disassembler problem for "Interrupt" resource descriptors.
11702 The optional "Resource Source Index" and "Resource Source" fields
11706 ----------------------------------------
11707 22 November 2002. Summary of changes for version 20021122.
11710 1) ACPI CA Core Subsystem:
11712 Fixed a reported problem where an object stored to a Method Local
11713 or Arg was not copied to a new object during the store - the
11714 object pointer was simply copied to the Local/Arg. This caused
11715 all subsequent operations on the Local/Arg to also affect the
11716 original source of the store operation.
11718 Fixed a problem where a store operation to a Method Local or Arg
11719 was not completed properly if the Local/Arg contained a reference
11720 (from RefOf) to a named field. The general-purpose store-to-
11721 namespace-node code is now used so that this case is handled
11724 Fixed a problem where the internal object copy routine would cause
11725 a protection fault if the object being copied was a Package and
11726 contained either 1) a NULL package element or 2) a nested sub-
11729 Fixed a problem with the GPE initialization that resulted from an
11730 ambiguity in the ACPI specification. One section of the
11731 specification states that both the address and length of the GPE
11732 block must be zero if the block is not supported. Another section
11733 implies that only the address need be zero if the block is not
11734 supported. The code has been changed so that both the address and
11735 the length must be non-zero to indicate a valid GPE block (i.e.,
11736 if either the address or the length is zero, the GPE block is
11739 Code and Data Size: Current core subsystem library sizes are shown
11740 below. These are the code and data sizes for the acpica.lib
11741 produced by the Microsoft Visual C++ 6.0 compiler, and these
11742 values do not include any ACPI driver or OSPM code. The debug
11743 version of the code includes the debug output trace mechanism and
11744 has a much larger code and data size. Note that these values will
11745 vary depending on the efficiency of the compiler and the compiler
11746 options used during generation.
11749 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11750 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11752 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11753 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11758 Cleaned up EC driver. Exported an external EC read/write
11759 interface. By going through this, other drivers (most notably
11760 sonypi) will be able to serialize access to the EC.
11763 3) iASL Compiler/Disassembler
11765 Implemented support to optionally generate include files for both
11766 ASM and C (the -i switch). This simplifies BIOS development by
11767 automatically creating include files that contain external
11768 declarations for the symbols that are created within the
11770 (optionally generated) ASM and C AML source files.
11773 ----------------------------------------
11774 15 November 2002. Summary of changes for version 20021115.
11776 1) ACPI CA Core Subsystem:
11778 Fixed a memory leak problem where an error during resolution of
11780 method arguments during a method invocation from another method
11781 failed to cleanup properly by deleting all successfully resolved
11784 Fixed a problem where the target of the Index() operator was not
11785 correctly constructed if the source object was a package. This
11786 problem has not been detected because the use of a target operand
11787 with Index() is very rare.
11789 Fixed a problem with the Index() operator where an attempt was
11790 made to delete the operand objects twice.
11792 Fixed a problem where an attempt was made to delete an operand
11793 twice during execution of the CondRefOf() operator if the target
11796 Implemented the first of perhaps several internal create object
11797 functions that create and initialize a specific object type. This
11798 consolidates duplicated code wherever the object is created, thus
11799 shrinking the size of the subsystem.
11801 Implemented improved debug/error messages for errors that occur
11802 during nested method invocations. All executing method pathnames
11803 are displayed (with the error) as the call stack is unwound - thus
11806 Fixed a problem introduced in the 10/02 release that caused
11807 premature deletion of a buffer object if a buffer was used as an
11808 ASL operand where an integer operand is required (Thus causing an
11809 implicit object conversion from Buffer to Integer.) The change in
11810 the 10/02 release was attempting to fix a memory leak (albeit
11813 Code and Data Size: Current core subsystem library sizes are shown
11814 below. These are the code and data sizes for the acpica.lib
11815 produced by the Microsoft Visual C++ 6.0 compiler, and these
11816 values do not include any ACPI driver or OSPM code. The debug
11817 version of the code includes the debug output trace mechanism and
11818 has a much larger code and data size. Note that these values will
11819 vary depending on the efficiency of the compiler and the compiler
11820 options used during generation.
11823 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11824 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11826 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11827 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11832 Changed the implementation of the ACPI semaphores to use down()
11833 instead of down_interruptable(). It is important that the
11834 execution of ACPI control methods not be interrupted by signals.
11835 Methods must run to completion, or the system may be left in an
11836 unknown/unstable state.
11838 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
11842 3) iASL Compiler/Disassembler
11845 Changed the default location of output files. All output files
11846 are now placed in the current directory by default instead of in
11847 the directory of the source file. This change may affect some
11848 existing makefiles, but it brings the behavior of the compiler in
11849 line with other similar tools. The location of the output files
11850 can be overridden with the -p command line switch.
11853 ----------------------------------------
11854 11 November 2002. Summary of changes for version 20021111.
11857 0) ACPI Specification 2.0B is released and is now available at:
11858 http://www.acpi.info/index.html
11861 1) ACPI CA Core Subsystem:
11863 Implemented support for the ACPI 2.0 SMBus Operation Regions.
11864 This includes the early detection and handoff of the request to
11865 the SMBus region handler (avoiding all of the complex field
11866 support code), and support for the bidirectional return packet
11867 from an SMBus write operation. This paves the way for the
11868 development of SMBus drivers in each host operating system.
11870 Fixed a problem where the semaphore WAIT_FOREVER constant was
11871 defined as 32 bits, but must be 16 bits according to the ACPI
11872 specification. This had the side effect of causing ASL
11873 Mutex/Event timeouts even though the ASL code requested a wait
11874 forever. Changed all internal references to the ACPI timeout
11875 parameter to 16 bits to prevent future problems. Changed the name
11876 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
11878 Code and Data Size: Current core subsystem library sizes are shown
11879 below. These are the code and data sizes for the acpica.lib
11880 produced by the Microsoft Visual C++ 6.0 compiler, and these
11881 values do not include any ACPI driver or OSPM code. The debug
11882 version of the code includes the debug output trace mechanism and
11883 has a much larger code and data size. Note that these values will
11884 vary depending on the efficiency of the compiler and the compiler
11885 options used during generation.
11888 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11889 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11891 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11892 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11897 Module loading/unloading fixes (John Cagle)
11900 3) iASL Compiler/Disassembler
11902 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
11904 Implemented support for the disassembly of all SMBus protocol
11905 keywords (SMBQuick, SMBWord, etc.)
11907 ----------------------------------------
11908 01 November 2002. Summary of changes for version 20021101.
11911 1) ACPI CA Core Subsystem:
11913 Fixed a problem where platforms that have a GPE1 block but no GPE0
11914 block were not handled correctly. This resulted in a "GPE
11915 overlap" error message. GPE0 is no longer required.
11917 Removed code added in the previous release that inserted nodes
11918 into the namespace in alphabetical order. This caused some side-
11919 effects on various machines. The root cause of the problem is
11920 still under investigation since in theory, the internal ordering
11921 of the namespace nodes should not matter.
11924 Enhanced error reporting for the case where a named object is not
11925 found during control method execution. The full ACPI namepath
11926 (name reference) of the object that was not found is displayed in
11929 Note: as a result of the overhaul of the namespace object types in
11930 the previous release, the namespace nodes for the predefined
11931 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
11932 instead of ACPI_TYPE_ANY. This simplifies the namespace
11933 management code but may affect code that walks the namespace tree
11934 looking for specific object types.
11936 Code and Data Size: Current core subsystem library sizes are shown
11937 below. These are the code and data sizes for the acpica.lib
11938 produced by the Microsoft Visual C++ 6.0 compiler, and these
11939 values do not include any ACPI driver or OSPM code. The debug
11940 version of the code includes the debug output trace mechanism and
11941 has a much larger code and data size. Note that these values will
11942 vary depending on the efficiency of the compiler and the compiler
11943 options used during generation.
11946 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
11947 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
11949 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11950 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11955 Fixed a problem introduced in the previous release where the
11956 Processor and Thermal objects were not recognized and installed in
11957 /proc. This was related to the scope type change described above.
11960 3) iASL Compiler/Disassembler
11962 Implemented the -g option to get all of the required ACPI tables
11963 from the registry and save them to files (Windows version of the
11964 compiler only.) The required tables are the FADT, FACS, and DSDT.
11966 Added ACPI table checksum validation during table disassembly in
11967 order to catch corrupted tables.
11970 ----------------------------------------
11971 22 October 2002. Summary of changes for version 20021022.
11973 1) ACPI CA Core Subsystem:
11975 Implemented a restriction on the Scope operator that the target
11976 must already exist in the namespace at the time the operator is
11977 encountered (during table load or method execution). In other
11978 words, forward references are not allowed and Scope() cannot
11979 create a new object. This changes the previous behavior where the
11980 interpreter would create the name if not found. This new behavior
11981 correctly enables the search-to-root algorithm during namespace
11982 lookup of the target name. Because of this upsearch, this fixes
11983 the known Compaq _SB_.OKEC problem and makes both the AML
11984 interpreter and iASL compiler compatible with other ACPI
11987 Completed a major overhaul of the internal ACPI object types for
11988 the ACPI Namespace and the associated operand objects. Many of
11989 these types had become obsolete with the introduction of the two-
11990 pass namespace load. This cleanup simplifies the code and makes
11991 the entire namespace load mechanism much clearer and easier to
11994 Improved debug output for tracking scope opening/closing to help
11995 diagnose scoping issues. The old scope name as well as the new
11996 scope name are displayed. Also improved error messages for
11997 problems with ASL Mutex objects and error messages for GPE
12000 Cleaned up the namespace dump code, removed obsolete code.
12002 All string output (for all namespace/object dumps) now uses the
12003 common ACPI string output procedure which handles escapes properly
12004 and does not emit non-printable characters.
12006 Fixed some issues with constants in the 64-bit version of the
12007 local C library (utclib.c)
12012 EC Driver: No longer attempts to acquire the Global Lock at
12016 3) iASL Compiler/Disassembler
12018 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12019 2 opcodes outside of a control method. This means that the
12020 "executable" operators (versus the "namespace" operators) cannot
12021 be used at the table level; they can only be used within a control
12024 Implemented the restriction on the Scope() operator where the
12025 target must already exist in the namespace at the time the
12026 operator is encountered (during ASL compilation). In other words,
12027 forward references are not allowed and Scope() cannot create a new
12028 object. This makes the iASL compiler compatible with other ACPI
12029 implementations and makes the Scope() implementation adhere to the
12030 ACPI specification.
12032 Fixed a problem where namepath optimization for the Alias operator
12033 was optimizing the wrong path (of the two namepaths.) This caused
12034 a "Missing alias link" error message.
12036 Fixed a problem where an "unknown reserved name" warning could be
12037 incorrectly generated for names like "_SB" when the trailing
12038 underscore is not used in the original ASL.
12040 Fixed a problem where the reserved name check did not handle
12041 NamePaths with multiple NameSegs correctly. The first nameseg of
12042 the NamePath was examined instead of the last NameSeg.
12045 ----------------------------------------
12047 02 October 2002. Summary of changes for this release.
12050 1) ACPI CA Core Subsystem version 20021002:
12052 Fixed a problem where a store/copy of a string to an existing
12053 string did not always set the string length properly in the String
12056 Fixed a reported problem with the ToString operator where the
12057 behavior was identical to the ToHexString operator instead of just
12058 simply converting a raw buffer to a string data type.
12060 Fixed a problem where CopyObject and the other "explicit"
12061 conversion operators were not updating the internal namespace node
12062 type as part of the store operation.
12064 Fixed a memory leak during implicit source operand conversion
12065 where the original object was not deleted if it was converted to a
12066 new object of a different type.
12068 Enhanced error messages for all problems associated with namespace
12069 lookups. Common procedure generates and prints the lookup name as
12070 well as the formatted status.
12072 Completed implementation of a new design for the Alias support
12073 within the namespace. The existing design did not handle the case
12074 where a new object was assigned to one of the two names due to the
12075 use of an explicit conversion operator, resulting in the two names
12076 pointing to two different objects. The new design simply points
12077 the Alias name to the original name node - not to the object.
12078 This results in a level of indirection that must be handled in the
12079 name resolution mechanism.
12081 Code and Data Size: Current core subsystem library sizes are shown
12082 below. These are the code and data sizes for the acpica.lib
12083 produced by the Microsoft Visual C++ 6.0 compiler, and these
12084 values do not include any ACPI driver or OSPM code. The debug
12085 version of the code includes the debug output trace mechanism and
12086 has a larger code and data size. Note that these values will vary
12087 depending on the efficiency of the compiler and the compiler
12088 options used during generation.
12091 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12092 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12094 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12095 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12100 Initialize thermal driver's timer before it is used. (Knut
12103 Allow handling negative celsius values. (Kochi Takayoshi)
12105 Fix thermal management and make trip points. R/W (Pavel Machek)
12107 Fix /proc/acpi/sleep. (P. Christeas)
12109 IA64 fixes. (David Mosberger)
12111 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12113 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12117 3) iASL Compiler/Disassembler
12119 Clarified some warning/error messages.
12122 ----------------------------------------
12123 18 September 2002. Summary of changes for this release.
12126 1) ACPI CA Core Subsystem version 20020918:
12128 Fixed a reported problem with reference chaining (via the Index()
12129 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12130 The definition of these operators includes the dereferencing of
12131 all chained references to return information on the base object.
12133 Fixed a problem with stores to indexed package elements - the
12134 existing code would not complete the store if an "implicit
12135 conversion" was not performed. In other words, if the existing
12136 object (package element) was to be replaced completely, the code
12137 didn't handle this case.
12139 Relaxed typechecking on the ASL "Scope" operator to allow the
12140 target name to refer to an object of type Integer, String, or
12141 Buffer, in addition to the scoping object types (Device,
12142 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12143 This allows existing AML code that has workarounds for a bug in
12144 Windows to function properly. A warning is issued, however. This
12145 affects both the AML interpreter and the iASL compiler. Below is
12146 an example of this type of ASL code:
12152 Fixed some reported problems with 64-bit integer support in the
12153 local implementation of C library functions (clib.c)
12158 Use ACPI fix map region instead of IOAPIC region, since it is
12159 undefined in non-SMP.
12161 Ensure that the SCI has the proper polarity and trigger, even on
12162 systems that do not have an interrupt override entry in the MADT.
12164 2.5 big driver reorganization (Pat Mochel)
12166 Use early table mapping code from acpitable.c (Andi Kleen)
12168 New blacklist entries (Andi Kleen)
12170 Blacklist improvements. Split blacklist code out into a separate
12171 file. Move checking the blacklist to very early. Previously, we
12172 would use ACPI tables, and then halfway through init, check the
12173 blacklist -- too late. Now, it's early enough to completely fall-
12177 3) iASL Compiler/Disassembler version 20020918:
12179 Fixed a problem where the typechecking code didn't know that an
12180 alias could point to a method. In other words, aliases were not
12181 being dereferenced during typechecking.
12184 ----------------------------------------
12185 29 August 2002. Summary of changes for this release.
12187 1) ACPI CA Core Subsystem Version 20020829:
12189 If the target of a Scope() operator already exists, it must be an
12190 object type that actually opens a scope -- such as a Device,
12191 Method, Scope, etc. This is a fatal runtime error. Similar error
12192 check has been added to the iASL compiler also.
12194 Tightened up the namespace load to disallow multiple names in the
12195 same scope. This previously was allowed if both objects were of
12196 the same type. (i.e., a lookup was the same as entering a new
12202 Ensure that the ACPI interrupt has the proper trigger and
12205 local_irq_disable is extraneous. (Matthew Wilcox)
12207 Make "acpi=off" actually do what it says, and not use the ACPI
12208 interpreter *or* the tables.
12210 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12214 3) iASL Compiler/Disassembler Version 20020829:
12216 Implemented namepath optimization for name declarations. For
12217 example, a declaration like "Method (\_SB_.ABCD)" would get
12218 optimized to "Method (ABCD)" if the declaration is within the
12219 \_SB_ scope. This optimization is in addition to the named
12220 reference path optimization first released in the previous
12221 version. This would seem to complete all possible optimizations
12222 for namepaths within the ASL/AML.
12224 If the target of a Scope() operator already exists, it must be an
12225 object type that actually opens a scope -- such as a Device,
12226 Method, Scope, etc.
12228 Implemented a check and warning for unreachable code in the same
12229 block below a Return() statement.
12231 Fixed a problem where the listing file was not generated if the
12232 compiler aborted if the maximum error count was exceeded (200).
12234 Fixed a problem where the typechecking of method return values was
12235 broken. This includes the check for a return value when the
12236 method is invoked as a TermArg (a return value is expected.)
12238 Fixed a reported problem where EOF conditions during a quoted
12239 string or comment caused a fault.
12242 ----------------------------------------
12243 15 August 2002. Summary of changes for this release.
12245 1) ACPI CA Core Subsystem Version 20020815:
12247 Fixed a reported problem where a Store to a method argument that
12248 contains a reference did not perform the indirect store correctly.
12249 This problem was created during the conversion to the new
12250 reference object model - the indirect store to a method argument
12251 code was not updated to reflect the new model.
12253 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12254 handle corner cases, and improve code legibility (Kochi Takayoshi)
12256 Fixed a problem with the pathname parsing for the carat (^)
12257 prefix. The heavy use of the carat operator by the new namepath
12258 optimization in the iASL compiler uncovered a problem with the AML
12259 interpreter handling of this prefix. In the case where one or
12260 more carats precede a single nameseg, the nameseg was treated as
12261 standalone and the search rule (to root) was inadvertently
12262 applied. This could cause both the iASL compiler and the
12263 interpreter to find the wrong object or to miss the error that
12264 should occur if the object does not exist at that exact pathname.
12266 Found and fixed the problem where the HP Pavilion DSDT would not
12267 load. This was a relatively minor tweak to the table loading code
12268 (a problem caused by the unexpected encounter with a method
12269 invocation not within a control method), but it does not solve the
12270 overall issue of the execution of AML code at the table level.
12271 This investigation is still ongoing.
12273 Code and Data Size: Current core subsystem library sizes are shown
12274 below. These are the code and data sizes for the acpica.lib
12275 produced by the Microsoft Visual C++ 6.0 compiler, and these
12276 values do not include any ACPI driver or OSPM code. The debug
12277 version of the code includes the debug output trace mechanism and
12278 has a larger code and data size. Note that these values will vary
12279 depending on the efficiency of the compiler and the compiler
12280 options used during generation.
12283 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12284 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12286 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12287 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12292 Remove redundant slab.h include (Brad Hards)
12294 Fix several bugs in thermal.c (Herbert Nachtnebel)
12296 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12298 Change acpi_system_suspend to use updated irq functions (Pavel
12301 Export acpi_get_firmware_table (Matthew Wilcox)
12303 Use proper root proc entry for ACPI (Kochi Takayoshi)
12305 Fix early-boot table parsing (Bjorn Helgaas)
12308 3) iASL Compiler/Disassembler
12310 Reworked the compiler options to make them more consistent and to
12311 use two-letter options where appropriate. We were running out of
12312 sensible letters. This may break some makefiles, so check the
12313 current options list by invoking the compiler with no parameters.
12315 Completed the design and implementation of the ASL namepath
12316 optimization option for the compiler. This option optimizes all
12317 references to named objects to the shortest possible path. The
12318 first attempt tries to utilize a single nameseg (4 characters) and
12319 the "search-to-root" algorithm used by the interpreter. If that
12320 cannot be used (because either the name is not in the search path
12321 or there is a conflict with another object with the same name),
12322 the pathname is optimized using the carat prefix (usually a
12323 shorter string than specifying the entire path from the root.)
12325 Implemented support to obtain the DSDT from the Windows registry
12326 (when the disassembly option is specified with no input file).
12327 Added this code as the implementation for AcpiOsTableOverride in
12328 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12329 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12330 function in the DOS OSL to make the disassembler truly OS
12333 Implemented a new option to disassemble and compile in one step.
12334 When used without an input filename, this option will grab the
12335 DSDT from the local machine, disassemble it, and compile it in one
12338 Added a warning message for invalid escapes (a backslash followed
12339 by any character other than the allowable escapes). This catches
12340 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12342 Also, there are numerous instances in the ACPI specification where
12345 Added a compiler option to disable all optimizations. This is
12346 basically the "compatibility mode" because by using this option,
12347 the AML code will come out exactly the same as other ASL
12350 Added error messages for incorrectly ordered dependent resource
12351 functions. This includes: missing EndDependentFn macro at end of
12352 dependent resource list, nested dependent function macros (both
12353 start and end), and missing StartDependentFn macro. These are
12354 common errors that should be caught at compile time.
12356 Implemented _OSI support for the disassembler and compiler. _OSI
12357 must be included in the namespace for proper disassembly (because
12358 the disassembler must know the number of arguments.)
12360 Added an "optimization" message type that is optional (off by
12361 default). This message is used for all optimizations - including
12362 constant folding, integer optimization, and namepath optimization.
12364 ----------------------------------------
12365 25 July 2002. Summary of changes for this release.
12368 1) ACPI CA Core Subsystem Version 20020725:
12370 The AML Disassembler has been enhanced to produce compilable ASL
12371 code and has been integrated into the iASL compiler (see below) as
12372 well as the single-step disassembly for the AML debugger and the
12373 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12374 resource templates and macros are fully supported. The
12375 disassembler has been tested on over 30 different AML files,
12376 producing identical AML when the resulting disassembled ASL file
12377 is recompiled with the same ASL compiler.
12379 Modified the Resource Manager to allow zero interrupts and zero
12380 dma channels during the GetCurrentResources call. This was
12381 causing problems on some platforms.
12383 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12384 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12387 Code and Data Size: Current core subsystem library sizes are shown
12388 below. These are the code and data sizes for the acpica.lib
12389 produced by the Microsoft Visual C++ 6.0 compiler, and these
12390 values do not include any ACPI driver or OSPM code. The debug
12391 version of the code includes the debug output trace mechanism and
12392 has a larger code and data size. Note that these values will vary
12393 depending on the efficiency of the compiler and the compiler
12394 options used during generation.
12397 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12398 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12400 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12401 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12406 Fixed a panic in the EC driver (Dominik Brodowski)
12408 Implemented checksum of the R/XSDT itself during Linux table scan
12414 The AML disassembler is integrated into the compiler. The "-d"
12415 option invokes the disassembler to completely disassemble an
12416 input AML file, producing as output a text ASL file with the
12417 extension ".dsl" (to avoid name collisions with existing .asl
12418 source files.) A future enhancement will allow the disassembler
12419 to obtain the BIOS DSDT from the registry under Windows.
12421 Fixed a problem with the VendorShort and VendorLong resource
12422 descriptors where an invalid AML sequence was created.
12424 Implemented a fix for BufferData term in the ASL parser. It was
12425 inadvertently defined twice, allowing invalid syntax to pass and
12426 causing reduction conflicts.
12428 Fixed a problem where the Ones opcode could get converted to a
12429 value of zero if "Ones" was used where a byte, word or dword value
12430 was expected. The 64-bit value is now truncated to the correct
12431 size with the correct value.
12435 ----------------------------------------
12436 02 July 2002. Summary of changes for this release.
12439 1) ACPI CA Core Subsystem Version 20020702:
12441 The Table Manager code has been restructured to add several new
12442 features. Tables that are not required by the core subsystem
12443 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
12444 validated in any way and are returned from AcpiGetFirmwareTable if
12445 requested. The AcpiOsTableOverride interface is now called for
12446 each table that is loaded by the subsystem in order to allow the
12447 host to override any table it chooses. Previously, only the DSDT
12448 could be overridden. Added one new files, tbrsdt.c and
12451 Fixed a problem with the conversion of internal package objects to
12452 external objects (when a package is returned from a control
12453 method.) The return buffer length was set to zero instead of the
12454 proper length of the package object.
12456 Fixed a reported problem with the use of the RefOf and DeRefOf
12457 operators when passing reference arguments to control methods. A
12458 new type of Reference object is used internally for references
12459 produced by the RefOf operator.
12461 Added additional error messages in the Resource Manager to explain
12462 AE_BAD_DATA errors when they occur during resource parsing.
12464 Split the AcpiEnableSubsystem into two primitives to enable a
12465 finer granularity initialization sequence. These two calls should
12466 be called in this order: AcpiEnableSubsystem (flags),
12467 AcpiInitializeObjects (flags). The flags parameter remains the
12473 Updated the ACPI utilities module to understand the new style of
12474 fully resolved package objects that are now returned from the core
12475 subsystem. This eliminates errors of the form:
12477 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
12478 acpi_utils-0430 [145] acpi_evaluate_reference:
12479 Invalid element in package (not a device reference)
12481 The method evaluation utility uses the new buffer allocation
12482 scheme instead of calling AcpiEvaluate Object twice.
12484 Added support for ECDT. This allows the use of the Embedded
12486 Controller before the namespace has been fully initialized, which
12487 is necessary for ACPI 2.0 support, and for some laptops to
12488 initialize properly. (Laptops using ECDT are still rare, so only
12489 limited testing was performed of the added functionality.)
12491 Fixed memory leaks in the EC driver.
12493 Eliminated a brittle code structure in acpi_bus_init().
12495 Eliminated the acpi_evaluate() helper function in utils.c. It is
12496 no longer needed since acpi_evaluate_object can optionally
12497 allocate memory for the return object.
12499 Implemented fix for keyboard hang when getting battery readings on
12500 some systems (Stephen White)
12502 PCI IRQ routing update (Dominik Brodowski)
12504 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
12507 ----------------------------------------
12508 11 June 2002. Summary of changes for this release.
12511 1) ACPI CA Core Subsystem Version 20020611:
12513 Fixed a reported problem where constants such as Zero and One
12514 appearing within _PRT packages were not handled correctly within
12515 the resource manager code. Originally reported against the ASL
12516 compiler because the code generator now optimizes integers to
12517 their minimal AML representation (i.e. AML constants if possible.)
12518 The _PRT code now handles all AML constant opcodes correctly
12519 (Zero, One, Ones, Revision).
12521 Fixed a problem with the Concatenate operator in the AML
12522 interpreter where a buffer result object was incorrectly marked as
12523 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
12525 All package sub-objects are now fully resolved before they are
12526 returned from the external ACPI interfaces. This means that name
12527 strings are resolved to object handles, and constant operators
12528 (Zero, One, Ones, Revision) are resolved to Integers.
12530 Implemented immediate resolution of the AML Constant opcodes
12531 (Zero, One, Ones, Revision) to Integer objects upon detection
12532 within the AML stream. This has simplified and reduced the
12533 generated code size of the subsystem by eliminating about 10
12534 switch statements for these constants (which previously were
12535 contained in Reference objects.) The complicating issues are that
12536 the Zero opcode is used as a "placeholder" for unspecified
12537 optional target operands and stores to constants are defined to be
12540 Code and Data Size: Current core subsystem library sizes are shown
12541 below. These are the code and data sizes for the acpica.lib
12542 produced by the Microsoft Visual C++ 6.0 compiler, and these
12543 values do not include any ACPI driver or OSPM code. The debug
12544 version of the code includes the debug output trace mechanism and
12545 has a larger code and data size. Note that these values will vary
12546 depending on the efficiency of the compiler and the compiler
12547 options used during generation.
12550 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12551 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12553 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12554 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12560 Added preliminary support for obtaining _TRA data for PCI root
12561 bridges (Bjorn Helgaas).
12564 3) iASL Compiler Version X2046:
12566 Fixed a problem where the "_DDN" reserved name was defined to be a
12567 control method with one argument. There are no arguments, and
12568 _DDN does not have to be a control method.
12570 Fixed a problem with the Linux version of the compiler where the
12571 source lines printed with error messages were the wrong lines.
12572 This turned out to be the "LF versus CR/LF" difference between
12573 Windows and Unix. This appears to be the longstanding issue
12574 concerning listing output and error messages.
12576 Fixed a problem with the Linux version of compiler where opcode
12577 names within error messages were wrong. This was caused by a
12578 slight difference in the output of the Flex tool on Linux versus
12581 Fixed a problem with the Linux compiler where the hex output files
12582 contained some garbage data caused by an internal buffer overrun.
12585 ----------------------------------------
12586 17 May 2002. Summary of changes for this release.
12589 1) ACPI CA Core Subsystem Version 20020517:
12591 Implemented a workaround to an BIOS bug discovered on the HP
12592 OmniBook where the FADT revision number and the table size are
12593 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
12594 behavior is to fallback to using only the ACPI 1.0 fields of the
12595 FADT if the table is too small to be a ACPI 2.0 table as claimed
12596 by the revision number. Although this is a BIOS bug, this is a
12597 case where the workaround is simple enough and with no side
12598 effects, so it seemed prudent to add it. A warning message is
12601 Implemented minimum size checks for the fixed-length ACPI tables -
12602 - the FADT and FACS, as well as consistency checks between the
12603 revision number and the table size.
12605 Fixed a reported problem in the table override support where the
12606 new table pointer was incorrectly treated as a physical address
12607 instead of a logical address.
12609 Eliminated the use of the AE_AML_ERROR exception and replaced it
12610 with more descriptive codes.
12612 Fixed a problem where an exception would occur if an ASL Field was
12613 defined with no named Field Units underneath it (used by some
12616 Code and Data Size: Current core subsystem library sizes are shown
12617 below. These are the code and data sizes for the acpica.lib
12618 produced by the Microsoft Visual C++ 6.0 compiler, and these
12619 values do not include any ACPI driver or OSPM code. The debug
12620 version of the code includes the debug output trace mechanism and
12621 has a larger code and data size. Note that these values will vary
12622 depending on the efficiency of the compiler and the compiler
12623 options used during generation.
12626 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12627 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12629 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12630 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12636 Much work done on ACPI init (MADT and PCI IRQ routing support).
12637 (Paul D. and Dominik Brodowski)
12639 Fix PCI IRQ-related panic on boot (Sam Revitch)
12641 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
12643 Fix "MHz" typo (Dominik Brodowski)
12645 Fix RTC year 2000 issue (Dominik Brodowski)
12647 Preclude multiple button proc entries (Eric Brunet)
12649 Moved arch-specific code out of include/platform/aclinux.h
12651 3) iASL Compiler Version X2044:
12653 Implemented error checking for the string used in the EISAID macro
12654 (Usually used in the definition of the _HID object.) The code now
12655 strictly enforces the PnP format - exactly 7 characters, 3
12656 uppercase letters and 4 hex digits.
12658 If a raw string is used in the definition of the _HID object
12659 (instead of the EISAID macro), the string must contain all
12660 alphanumeric characters (e.g., "*PNP0011" is not allowed because
12663 Implemented checking for invalid use of ACPI reserved names for
12664 most of the name creation operators (Name, Device, Event, Mutex,
12665 OperationRegion, PowerResource, Processor, and ThermalZone.)
12666 Previously, this check was only performed for control methods.
12668 Implemented an additional check on the Name operator to emit an
12669 error if a reserved name that must be implemented in ASL as a
12670 control method is used. We know that a reserved name must be a
12671 method if it is defined with input arguments.
12673 The warning emitted when a namespace object reference is not found
12674 during the cross reference phase has been changed into an error.
12675 The "External" directive should be used for names defined in other
12679 4) Tools and Utilities
12681 The 16-bit tools (adump16 and aexec16) have been regenerated and
12684 Fixed a problem with the output of both acpidump and adump16 where
12685 the indentation of closing parentheses and brackets was not
12687 aligned properly with the parent block.
12690 ----------------------------------------
12691 03 May 2002. Summary of changes for this release.
12694 1) ACPI CA Core Subsystem Version 20020503:
12696 Added support a new OSL interface that allows the host operating
12698 system software to override the DSDT found in the firmware -
12699 AcpiOsTableOverride. With this interface, the OSL can examine the
12700 version of the firmware DSDT and replace it with a different one
12703 Added new external interfaces for accessing ACPI registers from
12704 device drivers and other system software - AcpiGetRegister and
12705 AcpiSetRegister. This was simply an externalization of the
12706 existing AcpiHwBitRegister interfaces.
12708 Fixed a regression introduced in the previous build where the
12709 ASL/AML CreateField operator always returned an error,
12710 "destination must be a NS Node".
12712 Extended the maximum time (before failure) to successfully enable
12713 ACPI mode to 3 seconds.
12715 Code and Data Size: Current core subsystem library sizes are shown
12716 below. These are the code and data sizes for the acpica.lib
12717 produced by the Microsoft Visual C++ 6.0 compiler, and these
12718 values do not include any ACPI driver or OSPM code. The debug
12719 version of the code includes the debug output trace mechanism and
12720 has a larger code and data size. Note that these values will vary
12721 depending on the efficiency of the compiler and the compiler
12722 options used during generation.
12725 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12726 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12728 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12729 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12734 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
12735 free. While 3 out of 4 of our in-house systems work fine, the last
12736 one still hangs when testing the LAPIC timer.
12738 Renamed many files in 2.5 kernel release to omit "acpi_" from the
12741 Added warning on boot for Presario 711FR.
12743 Sleep improvements (Pavel Machek)
12745 ACPI can now be built without CONFIG_PCI enabled.
12747 IA64: Fixed memory map functions (JI Lee)
12750 3) iASL Compiler Version X2043:
12752 Added support to allow the compiler to be integrated into the MS
12753 VC++ development environment for one-button compilation of single
12754 files or entire projects -- with error-to-source-line mapping.
12756 Implemented support for compile-time constant folding for the
12757 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
12758 specification. This allows the ASL writer to use expressions
12759 instead of Integer/Buffer/String constants in terms that must
12760 evaluate to constants at compile time and will also simplify the
12761 emitted AML in any such sub-expressions that can be folded
12762 (evaluated at compile-time.) This increases the size of the
12763 compiler significantly because a portion of the ACPI CA AML
12764 interpreter is included within the compiler in order to pre-
12765 evaluate constant expressions.
12768 Fixed a problem with the "Unicode" ASL macro that caused the
12769 compiler to fault. (This macro is used in conjunction with the
12770 _STR reserved name.)
12772 Implemented an AML opcode optimization to use the Zero, One, and
12773 Ones opcodes where possible to further reduce the size of integer
12774 constants and thus reduce the overall size of the generated AML
12777 Implemented error checking for new reserved terms for ACPI version
12780 Implemented the -qr option to display the current list of ACPI
12781 reserved names known to the compiler.
12783 Implemented the -qc option to display the current list of ASL
12784 operators that are allowed within constant expressions and can
12785 therefore be folded at compile time if the operands are constants.
12790 Updated the Programmer's Reference for new interfaces, data types,
12791 and memory allocation model options.
12793 Updated the iASL Compiler User Reference to apply new format and
12794 add information about new features and options.
12796 ----------------------------------------
12797 19 April 2002. Summary of changes for this release.
12799 1) ACPI CA Core Subsystem Version 20020419:
12801 The source code base for the Core Subsystem has been completely
12802 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
12803 versions. The Lint option files used are included in the
12804 /acpi/generate/lint directory.
12806 Implemented enhanced status/error checking across the entire
12807 Hardware manager subsystem. Any hardware errors (reported from
12808 the OSL) are now bubbled up and will abort a running control
12812 Fixed a problem where the per-ACPI-table integer width (32 or 64)
12813 was stored only with control method nodes, causing a fault when
12814 non-control method code was executed during table loading. The
12815 solution implemented uses a global variable to indicate table
12816 width across the entire ACPI subsystem. Therefore, ACPI CA does
12817 not support mixed integer widths across different ACPI tables
12820 Fixed a problem where NULL extended fields (X fields) in an ACPI
12821 2.0 ACPI FADT caused the table load to fail. Although the
12822 existing ACPI specification is a bit fuzzy on this topic, the new
12823 behavior is to fall back on a ACPI 1.0 field if the corresponding
12824 ACPI 2.0 X field is zero (even though the table revision indicates
12825 a full ACPI 2.0 table.) The ACPI specification will be updated to
12826 clarify this issue.
12828 Fixed a problem with the SystemMemory operation region handler
12829 where memory was always accessed byte-wise even if the AML-
12830 specified access width was larger than a byte. This caused
12831 problems on systems with memory-mapped I/O. Memory is now
12832 accessed with the width specified. On systems that do not support
12833 non-aligned transfers, a check is made to guarantee proper address
12834 alignment before proceeding in order to avoid an AML-caused
12835 alignment fault within the kernel.
12838 Fixed a problem with the ExtendedIrq resource where only one byte
12839 of the 4-byte Irq field was extracted.
12841 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
12842 function was out of date and required a rewrite.
12844 Code and Data Size: Current core subsystem library sizes are shown
12845 below. These are the code and data sizes for the acpica.lib
12846 produced by the Microsoft Visual C++ 6.0 compiler, and these
12847 values do not include any ACPI driver or OSPM code. The debug
12848 version of the code includes the debug output trace mechanism and
12849 has a larger code and data size. Note that these values will vary
12850 depending on the efficiency of the compiler and the compiler
12851 options used during generation.
12854 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12855 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12857 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12858 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12863 PCI IRQ routing fixes (Dominik Brodowski)
12866 3) iASL Compiler Version X2042:
12868 Implemented an additional compile-time error check for a field
12869 unit whose size + minimum access width would cause a run-time
12870 access beyond the end-of-region. Previously, only the field size
12871 itself was checked.
12873 The Core subsystem and iASL compiler now share a common parse
12874 object in preparation for compile-time evaluation of the type
12875 3/4/5 ASL operators.
12878 ----------------------------------------
12879 Summary of changes for this release: 03_29_02
12881 1) ACPI CA Core Subsystem Version 20020329:
12883 Implemented support for late evaluation of TermArg operands to
12884 Buffer and Package objects. This allows complex expressions to be
12885 used in the declarations of these object types.
12887 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
12888 1.0, if the field was larger than 32 bits, it was returned as a
12889 buffer - otherwise it was returned as an integer. In ACPI 2.0,
12890 the field is returned as a buffer only if the field is larger than
12891 64 bits. The TableRevision is now considered when making this
12892 conversion to avoid incompatibility with existing ASL code.
12894 Implemented logical addressing for AcpiOsGetRootPointer. This
12895 allows an RSDP with either a logical or physical address. With
12896 this support, the host OS can now override all ACPI tables with
12897 one logical RSDP. Includes implementation of "typed" pointer
12898 support to allow a common data type for both physical and logical
12899 pointers internally. This required a change to the
12900 AcpiOsGetRootPointer interface.
12902 Implemented the use of ACPI 2.0 Generic Address Structures for all
12903 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
12904 mapped I/O for these ACPI features.
12906 Initialization now ignores not only non-required tables (All
12907 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
12908 not validate the table headers of unrecognized tables.
12910 Fixed a problem where a notify handler could only be
12911 installed/removed on an object of type Device. All "notify"
12913 objects are now supported -- Devices, Processor, Power, and
12916 Removed most verbosity from the ACPI_DB_INFO debug level. Only
12917 critical information is returned when this debug level is enabled.
12919 Code and Data Size: Current core subsystem library sizes are shown
12920 below. These are the code and data sizes for the acpica.lib
12921 produced by the Microsoft Visual C++ 6.0 compiler, and these
12922 values do not include any ACPI driver or OSPM code. The debug
12923 version of the code includes the debug output trace mechanism and
12924 has a larger code and data size. Note that these values will vary
12925 depending on the efficiency of the compiler and the compiler
12926 options used during generation.
12929 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
12930 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
12932 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12933 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12938 The processor driver (acpi_processor.c) now fully supports ACPI
12939 2.0-based processor performance control (e.g. Intel(R)
12940 SpeedStep(TM) technology) Note that older laptops that only have
12941 the Intel "applet" interface are not supported through this. The
12942 'limit' and 'performance' interface (/proc) are fully functional.
12943 [Note that basic policy for controlling performance state
12944 transitions will be included in the next version of ospmd.] The
12945 idle handler was modified to more aggressively use C2, and PIIX4
12946 errata handling underwent a complete overhaul (big thanks to
12947 Dominik Brodowski).
12949 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
12950 based devices in the ACPI namespace are now dynamically bound
12951 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
12952 This allows, among other things, ACPI to resolve bus numbers for
12953 subordinate PCI bridges.
12955 Enhanced PCI IRQ routing to get the proper bus number for _PRT
12956 entries defined underneath PCI bridges.
12958 Added IBM 600E to bad bios list due to invalid _ADR value for
12959 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
12961 In the process of adding full MADT support (e.g. IOAPIC) for IA32
12962 (acpi.c, mpparse.c) -- stay tuned.
12964 Added back visual differentiation between fixed-feature and
12965 control-method buttons in dmesg. Buttons are also subtyped (e.g.
12966 button/power/PWRF) to simplify button identification.
12968 We no longer use -Wno-unused when compiling debug. Please ignore
12969 any "_THIS_MODULE defined but not used" messages.
12971 Can now shut down the system using "magic sysrq" key.
12974 3) iASL Compiler version 2041:
12976 Fixed a problem where conversion errors for hex/octal/decimal
12977 constants were not reported.
12979 Implemented a fix for the General Register template Address field.
12980 This field was 8 bits when it should be 64.
12982 Fixed a problem where errors/warnings were no longer being emitted
12983 within the listing output file.
12985 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
12986 exactly 4 characters, alphanumeric only.
12991 ----------------------------------------
12992 Summary of changes for this release: 03_08_02
12995 1) ACPI CA Core Subsystem Version 20020308:
12997 Fixed a problem with AML Fields where the use of the "AccessAny"
12998 keyword could cause an interpreter error due to attempting to read
12999 or write beyond the end of the parent Operation Region.
13001 Fixed a problem in the SystemMemory Operation Region handler where
13002 an attempt was made to map memory beyond the end of the region.
13003 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13004 errors on some Linux systems.
13006 Fixed a problem where the interpreter/namespace "search to root"
13007 algorithm was not functioning for some object types. Relaxed the
13008 internal restriction on the search to allow upsearches for all
13009 external object types as well as most internal types.
13014 We now use safe_halt() macro versus individual calls to sti | hlt.
13016 Writing to the processor limit interface should now work. "echo 1"
13017 will increase the limit, 2 will decrease, and 0 will reset to the
13024 Fixed segfault on Linux version.
13027 ----------------------------------------
13028 Summary of changes for this release: 02_25_02
13030 1) ACPI CA Core Subsystem:
13033 Fixed a problem where the GPE bit masks were not initialized
13034 properly, causing erratic GPE behavior.
13036 Implemented limited support for multiple calling conventions. The
13037 code can be generated with either the VPL (variable parameter
13038 list, or "C") convention, or the FPL (fixed parameter list, or
13039 "Pascal") convention. The core subsystem is about 3.4% smaller
13040 when generated with FPL.
13045 Re-add some /proc/acpi/event functionality that was lost during
13048 Resolved issue with /proc events for fixed-feature buttons showing
13049 up as the system device.
13051 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13053 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13055 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13057 Fixed limit interface & usage to fix bugs with passive cooling
13060 Restructured PRT support.
13063 ----------------------------------------
13064 Summary of changes for this label: 02_14_02
13067 1) ACPI CA Core Subsystem:
13069 Implemented support in AcpiLoadTable to allow loading of FACS and
13072 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13073 been removed. All 64-bit platforms should be migrated to the ACPI
13074 2.0 tables. The actbl71.h header has been removed from the source
13077 All C macros defined within the subsystem have been prefixed with
13078 "ACPI_" to avoid collision with other system include files.
13080 Removed the return value for the two AcpiOsPrint interfaces, since
13081 it is never used and causes lint warnings for ignoring the return
13084 Added error checking to all internal mutex acquire and release
13085 calls. Although a failure from one of these interfaces is
13086 probably a fatal system error, these checks will cause the
13087 immediate abort of the currently executing method or interface.
13089 Fixed a problem where the AcpiSetCurrentResources interface could
13090 fault. This was a side effect of the deployment of the new memory
13093 Fixed a couple of problems with the Global Lock support introduced
13094 in the last major build. The "common" (1.0/2.0) internal FACS was
13095 being overwritten with the FACS signature and clobbering the
13096 Global Lock pointer. Also, the actual firmware FACS was being
13097 unmapped after construction of the "common" FACS, preventing
13098 access to the actual Global Lock field within it. The "common"
13099 internal FACS is no longer installed as an actual ACPI table; it
13100 is used simply as a global.
13102 Code and Data Size: Current core subsystem library sizes are shown
13103 below. These are the code and data sizes for the acpica.lib
13104 produced by the Microsoft Visual C++ 6.0 compiler, and these
13105 values do not include any ACPI driver or OSPM code. The debug
13106 version of the code includes the debug output trace mechanism and
13107 has a larger code and data size. Note that these values will vary
13108 depending on the efficiency of the compiler and the compiler
13109 options used during generation.
13111 Previous Release (02_07_01)
13112 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13113 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13115 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13116 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13121 Updated Linux-specific code for core macro and OSL interface
13122 changes described above.
13124 Improved /proc/acpi/event. It now can be opened only once and has
13125 proper poll functionality.
13127 Fixed and restructured power management (acpi_bus).
13129 Only create /proc "view by type" when devices of that class exist.
13131 Fixed "charging/discharging" bug (and others) in acpi_battery.
13133 Improved thermal zone code.
13136 3) ASL Compiler, version X2039:
13139 Implemented the new compiler restriction on ASL String hex/octal
13140 escapes to non-null, ASCII values. An error results if an invalid
13141 value is used. (This will require an ACPI 2.0 specification
13144 AML object labels that are output to the optional C and ASM source
13145 are now prefixed with both the ACPI table signature and table ID
13146 to help guarantee uniqueness within a large BIOS project.
13149 ----------------------------------------
13150 Summary of changes for this label: 02_01_02
13152 1) ACPI CA Core Subsystem:
13154 ACPI 2.0 support is complete in the entire Core Subsystem and the
13155 ASL compiler. All new ACPI 2.0 operators are implemented and all
13156 other changes for ACPI 2.0 support are complete. With
13157 simultaneous code and data optimizations throughout the subsystem,
13158 ACPI 2.0 support has been implemented with almost no additional
13159 cost in terms of code and data size.
13161 Implemented a new mechanism for allocation of return buffers. If
13162 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13163 be allocated on behalf of the caller. Consolidated all return
13164 buffer validation and allocation to a common procedure. Return
13165 buffers will be allocated via the primary OSL allocation interface
13166 since it appears that a separate pool is not needed by most users.
13167 If a separate pool is required for these buffers, the caller can
13168 still use the original mechanism and pre-allocate the buffer(s).
13170 Implemented support for string operands within the DerefOf
13173 Restructured the Hardware and Event managers to be table driven,
13174 simplifying the source code and reducing the amount of generated
13177 Split the common read/write low-level ACPI register bitfield
13178 procedure into a separate read and write, simplifying the code
13181 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13182 used only a handful of times and didn't have enough critical mass
13183 for a separate interface. Replaced with a common calloc procedure
13186 Fixed a reported problem with the GPE number mapping mechanism
13187 that allows GPE1 numbers to be non-contiguous with GPE0.
13188 Reorganized the GPE information and shrunk a large array that was
13189 originally large enough to hold info for all possible GPEs (256)
13190 to simply large enough to hold all GPEs up to the largest GPE
13191 number on the machine.
13193 Fixed a reported problem with resource structure alignment on 64-
13196 Changed the AcpiEnableEvent and AcpiDisableEvent external
13197 interfaces to not require any flags for the common case of
13198 enabling/disabling a GPE.
13200 Implemented support to allow a "Notify" on a Processor object.
13202 Most TBDs in comments within the source code have been resolved
13206 Fixed a problem in the interpreter where a standalone parent
13207 prefix (^) was not handled correctly in the interpreter and
13210 Removed obsolete and unnecessary GPE save/restore code.
13212 Implemented Field support in the ASL Load operator. This allows a
13213 table to be loaded from a named field, in addition to loading a
13214 table directly from an Operation Region.
13216 Implemented timeout and handle support in the external Global Lock
13219 Fixed a problem in the AcpiDump utility where pathnames were no
13220 longer being generated correctly during the dump of named objects.
13222 Modified the AML debugger to give a full display of if/while
13223 predicates instead of just one AML opcode at a time. (The
13224 predicate can have several nested ASL statements.) The old method
13225 was confusing during single stepping.
13227 Code and Data Size: Current core subsystem library sizes are shown
13228 below. These are the code and data sizes for the acpica.lib
13229 produced by the Microsoft Visual C++ 6.0 compiler, and these
13230 values do not include any ACPI driver or OSPM code. The debug
13231 version of the code includes the debug output trace mechanism and
13232 has a larger code and data size. Note that these values will vary
13233 depending on the efficiency of the compiler and the compiler
13234 options used during generation.
13236 Previous Release (12_18_01)
13237 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13238 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13240 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13241 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13245 Implemented fix for PIIX reverse throttling errata (Processor
13248 Added new Limit interface (Processor and Thermal drivers)
13250 New thermal policy (Thermal driver)
13252 Many updates to /proc
13254 Battery "low" event support (Battery driver)
13256 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13258 IA32 - IA64 initialization unification, no longer experimental
13260 Menuconfig options redesigned
13262 3) ASL Compiler, version X2037:
13264 Implemented several new output features to simplify integration of
13265 AML code into firmware: 1) Output the AML in C source code with
13266 labels for each named ASL object. The original ASL source code
13267 is interleaved as C comments. 2) Output the AML in ASM source code
13268 with labels and interleaved ASL source. 3) Output the AML in
13269 raw hex table form, in either C or ASM.
13271 Implemented support for optional string parameters to the
13272 LoadTable operator.
13274 Completed support for embedded escape sequences within string
13275 literals. The compiler now supports all single character escapes
13276 as well as the Octal and Hex escapes. Note: the insertion of a
13277 null byte into a string literal (via the hex/octal escape) causes
13278 the string to be immediately terminated. A warning is issued.
13280 Fixed a problem where incorrect AML was generated for the case
13281 where an ASL namepath consists of a single parent prefix (
13283 ) with no trailing name segments.
13285 The compiler has been successfully generated with a 64-bit C
13291 ----------------------------------------
13292 Summary of changes for this label: 12_18_01
13296 Enhanced blacklist with reason and severity fields. Any table's
13297 signature may now be used to identify a blacklisted system.
13299 Call _PIC control method to inform the firmware which interrupt
13300 model the OS is using. Turn on any disabled link devices.
13302 Cleaned up busmgr /proc error handling (Andreas Dilger)
13304 2) ACPI CA Core Subsystem:
13306 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13309 Completed implementation of the ACPI 2.0 "Continue",
13310 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13311 operators. All new ACPI 2.0 operators are now implemented in both
13312 the ASL compiler and the AML interpreter. The only remaining ACPI
13313 2.0 task is support for the String data type in the DerefOf
13314 operator. Fixed a problem with AcquireMutex where the status code
13315 was lost if the caller had to actually wait for the mutex.
13317 Increased the maximum ASL Field size from 64K bits to 4G bits.
13319 Completed implementation of the external Global Lock interfaces --
13320 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13321 Handler parameters were added.
13323 Completed another pass at removing warnings and issues when
13324 compiling with 64-bit compilers. The code now compiles cleanly
13325 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13326 add and subtract (diff) macros have changed considerably.
13329 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13330 64-bit platforms, 32-bits on all others. This type is used
13331 wherever memory allocation and/or the C sizeof() operator is used,
13332 and affects the OSL memory allocation interfaces AcpiOsAllocate
13333 and AcpiOsCallocate.
13335 Implemented sticky user breakpoints in the AML debugger.
13337 Code and Data Size: Current core subsystem library sizes are shown
13338 below. These are the code and data sizes for the acpica.lib
13339 produced by the Microsoft Visual C++ 6.0 compiler, and these
13340 values do not include any ACPI driver or OSPM code. The debug
13341 version of the code includes the debug output trace mechanism and
13342 has a larger code and data size. Note that these values will vary
13343 depending on the efficiency of the compiler and the compiler
13344 options used during generation.
13346 Previous Release (12_05_01)
13347 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13348 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13350 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13351 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13353 3) ASL Compiler, version X2034:
13355 Now checks for (and generates an error if detected) the use of a
13356 Break or Continue statement without an enclosing While statement.
13359 Successfully generated the compiler with the Intel 64-bit C
13362 ----------------------------------------
13363 Summary of changes for this label: 12_05_01
13365 1) ACPI CA Core Subsystem:
13367 The ACPI 2.0 CopyObject operator is fully implemented. This
13368 operator creates a new copy of an object (and is also used to
13369 bypass the "implicit conversion" mechanism of the Store operator.)
13371 The ACPI 2.0 semantics for the SizeOf operator are fully
13372 implemented. The change is that performing a SizeOf on a
13373 reference object causes an automatic dereference of the object to
13374 tha actual value before the size is evaluated. This behavior was
13375 undefined in ACPI 1.0.
13377 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13378 have been implemented. The interrupt polarity and mode are now
13381 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13382 appearing in Package objects were not properly converted to
13383 integers when the internal Package was converted to an external
13384 object (via the AcpiEvaluateObject interface.)
13386 Fixed a problem with the namespace object deletion mechanism for
13387 objects created by control methods. There were two parts to this
13388 problem: 1) Objects created during the initialization phase method
13389 parse were not being deleted, and 2) The object owner ID mechanism
13390 to track objects was broken.
13392 Fixed a problem where the use of the ASL Scope operator within a
13393 control method would result in an invalid opcode exception.
13395 Fixed a problem introduced in the previous label where the buffer
13396 length required for the _PRT structure was not being returned
13399 Code and Data Size: Current core subsystem library sizes are shown
13400 below. These are the code and data sizes for the acpica.lib
13401 produced by the Microsoft Visual C++ 6.0 compiler, and these
13402 values do not include any ACPI driver or OSPM code. The debug
13403 version of the code includes the debug output trace mechanism and
13404 has a larger code and data size. Note that these values will vary
13405 depending on the efficiency of the compiler and the compiler
13406 options used during generation.
13408 Previous Release (11_20_01)
13409 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13410 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13413 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13414 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13418 Updated all files to apply cleanly against 2.4.16.
13420 Added basic PCI Interrupt Routing Table (PRT) support for IA32
13421 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
13422 version supports both static and dyanmic PRT entries, but dynamic
13423 entries are treated as if they were static (not yet
13424 reconfigurable). Architecture- specific code to use this data is
13425 absent on IA32 but should be available shortly.
13427 Changed the initialization sequence to start the ACPI interpreter
13428 (acpi_init) prior to initialization of the PCI driver (pci_init)
13429 in init/main.c. This ordering is required to support PRT and
13430 facilitate other (future) enhancement. A side effect is that the
13431 ACPI bus driver and certain device drivers can no longer be loaded
13434 Modified the 'make menuconfig' options to allow PCI Interrupt
13435 Routing support to be included without the ACPI Bus and other
13438 3) ASL Compiler, version X2033:
13440 Fixed some issues with the use of the new CopyObject and
13441 DataTableRegion operators. Both are fully functional.
13443 ----------------------------------------
13444 Summary of changes for this label: 11_20_01
13446 20 November 2001. Summary of changes for this release.
13448 1) ACPI CA Core Subsystem:
13450 Updated Index support to match ACPI 2.0 semantics. Storing a
13451 Integer, String, or Buffer to an Index of a Buffer will store only
13452 the least-significant byte of the source to the Indexed buffer
13453 byte. Multiple writes are not performed.
13455 Fixed a problem where the access type used in an AccessAs ASL
13456 operator was not recorded correctly into the field object.
13458 Fixed a problem where ASL Event objects were created in a
13459 signalled state. Events are now created in an unsignalled state.
13461 The internal object cache is now purged after table loading and
13462 initialization to reduce the use of dynamic kernel memory -- on
13463 the assumption that object use is greatest during the parse phase
13464 of the entire table (versus the run-time use of individual control
13467 ACPI 2.0 variable-length packages are now fully operational.
13469 Code and Data Size: Code and Data optimizations have permitted new
13470 feature development with an actual reduction in the library size.
13471 Current core subsystem library sizes are shown below. These are
13472 the code and data sizes for the acpica.lib produced by the
13473 Microsoft Visual C++ 6.0 compiler, and these values do not include
13474 any ACPI driver or OSPM code. The debug version of the code
13475 includes the debug output trace mechanism and has a larger code
13476 and data size. Note that these values will vary depending on the
13477 efficiency of the compiler and the compiler options used during
13480 Previous Release (11_09_01):
13481 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13482 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13485 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13486 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13490 Enhanced the ACPI boot-time initialization code to allow the use
13491 of Local APIC tables for processor enumeration on IA-32, and to
13492 pave the way for a fully MPS-free boot (on SMP systems) in the
13493 near future. This functionality replaces
13494 arch/i386/kernel/acpitables.c, which was introduced in an earlier
13495 2.4.15-preX release. To enable this feature you must add
13496 "acpi_boot=on" to the kernel command line -- see the help entry
13497 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
13500 Restructured the configuration options to allow boot-time table
13501 parsing support without inclusion of the ACPI Interpreter (and
13504 NOTE: This release does not include fixes for the reported events,
13505 power-down, and thermal passive cooling issues (coming soon).
13509 Added additional typechecking for Fields within restricted access
13510 Operation Regions. All fields within EC and CMOS regions must be
13511 declared with ByteAcc. All fields withing SMBus regions must be
13512 declared with the BufferAcc access type.
13514 Fixed a problem where the listing file output of control methods
13515 no longer interleaved the actual AML code with the ASL source
13521 ----------------------------------------
13522 Summary of changes for this label: 11_09_01
13524 1) ACPI CA Core Subsystem:
13526 Implemented ACPI 2.0-defined support for writes to fields with a
13527 Buffer, String, or Integer source operand that is smaller than the
13528 target field. In these cases, the source operand is zero-extended
13529 to fill the target field.
13531 Fixed a problem where a Field starting bit offset (within the
13532 parent operation region) was calculated incorrectly if the
13534 alignment of the field differed from the access width. This
13535 affected CreateWordField, CreateDwordField, CreateQwordField, and
13536 possibly other fields that use the "AccessAny" keyword.
13538 Fixed a problem introduced in the 11_02_01 release where indirect
13539 stores through method arguments did not operate correctly.
13543 Implemented boot-time ACPI table parsing support
13544 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
13545 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
13546 legacy BIOS interfaces (e.g. MPS) for the configuration of system
13547 processors, memory, and interrupts during setup_arch(). Note that
13548 this patch does not include the required architecture-specific
13549 changes required to apply this information -- subsequent patches
13550 will be posted for both IA32 and IA64 to achieve this.
13552 Added low-level sleep support for IA32 platforms, courtesy of Pat
13553 Mochel. This allows IA32 systems to transition to/from various
13554 sleeping states (e.g. S1, S3), although the lack of a centralized
13555 driver model and power-manageable drivers will prevent its
13556 (successful) use on most systems.
13558 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
13559 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
13560 tables" option, etc.
13562 Increased the default timeout for the EC driver from 1ms to 10ms
13563 (1000 cycles of 10us) to try to address AE_TIME errors during EC
13566 ----------------------------------------
13567 Summary of changes for this label: 11_02_01
13569 1) ACPI CA Core Subsystem:
13571 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
13572 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
13575 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
13576 changes to support ACPI 2.0 Qword field access. Read/Write
13577 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
13578 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
13579 the value parameter for the address space handler interface is now
13580 an ACPI_INTEGER. OSL implementations of these interfaces must now
13581 handle the case where the Width parameter is 64.
13583 Index Fields: Fixed a problem where unaligned bit assembly and
13584 disassembly for IndexFields was not supported correctly.
13586 Index and Bank Fields: Nested Index and Bank Fields are now
13587 supported. During field access, a check is performed to ensure
13588 that the value written to an Index or Bank register is not out of
13589 the range of the register. The Index (or Bank) register is
13590 written before each access to the field data. Future support will
13591 include allowing individual IndexFields to be wider than the
13592 DataRegister width.
13594 Fields: Fixed a problem where the AML interpreter was incorrectly
13595 attempting to write beyond the end of a Field/OpRegion. This was
13596 a boundary case that occurred when a DWORD field was written to a
13597 BYTE access OpRegion, forcing multiple writes and causing the
13598 interpreter to write one datum too many.
13600 Fields: Fixed a problem with Field/OpRegion access where the
13601 starting bit address of a field was incorrectly calculated if the
13602 current access type was wider than a byte (WordAcc, DwordAcc, or
13605 Fields: Fixed a problem where forward references to individual
13606 FieldUnits (individual Field names within a Field definition) were
13607 not resolved during the AML table load.
13609 Fields: Fixed a problem where forward references from a Field
13610 definition to the parent Operation Region definition were not
13611 resolved during the AML table load.
13613 Fields: Duplicate FieldUnit names within a scope are now detected
13614 during AML table load.
13616 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
13617 returned an incorrect name for the root node.
13619 Code and Data Size: Code and Data optimizations have permitted new
13620 feature development with an actual reduction in the library size.
13621 Current core subsystem library sizes are shown below. These are
13622 the code and data sizes for the acpica.lib produced by the
13623 Microsoft Visual C++ 6.0 compiler, and these values do not include
13624 any ACPI driver or OSPM code. The debug version of the code
13625 includes the debug output trace mechanism and has a larger code
13626 and data size. Note that these values will vary depending on the
13627 efficiency of the compiler and the compiler options used during
13630 Previous Release (10_18_01):
13631 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13632 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13635 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13636 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13640 Improved /proc processor output (Pavel Machek) Re-added
13641 MODULE_LICENSE("GPL") to all modules.
13643 3) ASL Compiler version X2030:
13645 Duplicate FieldUnit names within a scope are now detected and
13650 Programmer Reference updated to reflect OSL and address space
13651 handler interface changes described above.
13653 ----------------------------------------
13654 Summary of changes for this label: 10_18_01
13656 ACPI CA Core Subsystem:
13658 Fixed a problem with the internal object reference count mechanism
13659 that occasionally caused premature object deletion. This resolves
13660 all of the outstanding problem reports where an object is deleted
13661 in the middle of an interpreter evaluation. Although this problem
13662 only showed up in rather obscure cases, the solution to the
13663 problem involved an adjustment of all reference counts involving
13664 objects attached to namespace nodes.
13666 Fixed a problem with Field support in the interpreter where
13667 writing to an aligned field whose length is an exact multiple (2
13668 or greater) of the field access granularity would cause an attempt
13669 to write beyond the end of the field.
13671 The top level AML opcode execution functions within the
13672 interpreter have been renamed with a more meaningful and
13673 consistent naming convention. The modules exmonad.c and
13674 exdyadic.c were eliminated. New modules are exoparg1.c,
13675 exoparg2.c, exoparg3.c, and exoparg6.c.
13677 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
13679 Fixed a problem where the AML debugger was causing some internal
13680 objects to not be deleted during subsystem termination.
13682 Fixed a problem with the external AcpiEvaluateObject interface
13683 where the subsystem would fault if the named object to be
13684 evaluated refered to a constant such as Zero, Ones, etc.
13686 Fixed a problem with IndexFields and BankFields where the
13687 subsystem would fault if the index, data, or bank registers were
13688 not defined in the same scope as the field itself.
13690 Added printf format string checking for compilers that support
13691 this feature. Corrected more than 50 instances of issues with
13692 format specifiers within invocations of ACPI_DEBUG_PRINT
13693 throughout the core subsystem code.
13695 The ASL "Revision" operator now returns the ACPI support level
13696 implemented in the core - the value "2" since the ACPI 2.0 support
13697 is more than 50% implemented.
13699 Enhanced the output of the AML debugger "dump namespace" command
13700 to output in a more human-readable form.
13702 Current core subsystem library code sizes are shown below. These
13704 are the code and data sizes for the acpica.lib produced by the
13705 Microsoft Visual C++ 6.0 compiler, and these values do not include
13706 any ACPI driver or OSPM code. The debug version of the code
13707 includes the full debug trace mechanism -- leading to a much
13709 larger code and data size. Note that these values will vary
13710 depending on the efficiency of the compiler and the compiler
13711 options used during generation.
13713 Previous Label (09_20_01):
13714 Non-Debug Version: 65K Code, 5K Data, 70K Total
13715 Debug Version: 138K Code, 58K Data, 196K Total
13719 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13720 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13724 Implemented a "Bad BIOS Blacklist" to track machines that have
13725 known ASL/AML problems.
13727 Enhanced the /proc interface for the thermal zone driver and added
13728 support for _HOT (the critical suspend trip point). The 'info'
13729 file now includes threshold/policy information, and allows setting
13730 of _SCP (cooling preference) and _TZP (polling frequency) values
13731 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
13732 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
13733 preference to the passive/quiet mode (if supported by the ASL).
13735 Implemented a workaround for a gcc bug that resuted in an OOPs
13736 when loading the control method battery driver.
13738 ----------------------------------------
13739 Summary of changes for this label: 09_20_01
13741 ACPI CA Core Subsystem:
13743 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
13744 modified to allow individual GPE levels to be flagged as wake-
13745 enabled (i.e., these GPEs are to remain enabled when the platform
13748 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
13749 support wake-enabled GPEs. This means that upon entering the
13750 sleep state, all GPEs that are not wake-enabled are disabled.
13751 When leaving the sleep state, these GPEs are reenabled.
13753 A local double-precision divide/modulo module has been added to
13754 enhance portability to OS kernels where a 64-bit math library is
13755 not available. The new module is "utmath.c".
13757 Several optimizations have been made to reduce the use of CPU
13758 stack. Originally over 2K, the maximum stack usage is now below
13759 2K at 1860 bytes (1.82k)
13761 Fixed a problem with the AcpiGetFirmwareTable interface where the
13762 root table pointer was not mapped into a logical address properly.
13764 Fixed a problem where a NULL pointer was being dereferenced in the
13765 interpreter code for the ASL Notify operator.
13767 Fixed a problem where the use of the ASL Revision operator
13768 returned an error. This operator now returns the current version
13769 of the ACPI CA core subsystem.
13771 Fixed a problem where objects passed as control method parameters
13772 to AcpiEvaluateObject were always deleted at method termination.
13773 However, these objects may end up being stored into the namespace
13774 by the called method. The object reference count mechanism was
13775 applied to these objects instead of a force delete.
13777 Fixed a problem where static strings or buffers (contained in the
13778 AML code) that are declared as package elements within the ASL
13779 code could cause a fault because the interpreter would attempt to
13780 delete them. These objects are now marked with the "static
13781 object" flag to prevent any attempt to delete them.
13783 Implemented an interpreter optimization to use operands directly
13784 from the state object instead of extracting the operands to local
13785 variables. This reduces stack use and code size, and improves
13788 The module exxface.c was eliminated as it was an unnecessary extra
13791 Current core subsystem library code sizes are shown below. These
13792 are the code and data sizes for the acpica.lib produced by the
13793 Microsoft Visual C++ 6.0 compiler, and these values do not include
13794 any ACPI driver or OSPM code. The debug version of the code
13795 includes the full debug trace mechanism -- leading to a much
13796 larger code and data size. Note that these values will vary
13797 depending on the efficiency of the compiler and the compiler
13798 options used during generation.
13800 Non-Debug Version: 65K Code, 5K Data, 70K Total
13801 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
13802 Total (Previously 195K)
13806 Support for ACPI 2.0 64-bit integers has been added. All ACPI
13807 Integer objects are now 64 bits wide
13809 All Acpi data types and structures are now in lower case. Only
13810 Acpi macros are upper case for differentiation.
13814 Changes to the external interfaces as described above.
13816 ----------------------------------------
13817 Summary of changes for this label: 08_31_01
13819 ACPI CA Core Subsystem:
13821 A bug with interpreter implementation of the ASL Divide operator
13822 was found and fixed. The implicit function return value (not the
13823 explicit store operands) was returning the remainder instead of
13824 the quotient. This was a longstanding bug and it fixes several
13825 known outstanding issues on various platforms.
13827 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
13828 been further optimized for size. There are 700 invocations of the
13829 DEBUG_PRINT macro alone, so each optimization reduces the size of
13830 the debug version of the subsystem significantly.
13832 A stack trace mechanism has been implemented. The maximum stack
13833 usage is about 2K on 32-bit platforms. The debugger command "stat
13834 stack" will display the current maximum stack usage.
13836 All public symbols and global variables within the subsystem are
13837 now prefixed with the string "Acpi". This keeps all of the
13838 symbols grouped together in a kernel map, and avoids conflicts
13839 with other kernel subsystems.
13841 Most of the internal fixed lookup tables have been moved into the
13842 code segment via the const operator.
13844 Several enhancements have been made to the interpreter to both
13845 reduce the code size and improve performance.
13847 Current core subsystem library code sizes are shown below. These
13848 are the code and data sizes for the acpica.lib produced by the
13849 Microsoft Visual C++ 6.0 compiler, and these values do not include
13850 any ACPI driver or OSPM code. The debug version of the code
13851 includes the full debug trace mechanism which contains over 700
13852 invocations of the DEBUG_PRINT macro, 500 function entry macro
13853 invocations, and over 900 function exit macro invocations --
13854 leading to a much larger code and data size. Note that these
13855 values will vary depending on the efficiency of the compiler and
13856 the compiler options used during generation.
13858 Non-Debug Version: 64K Code, 5K Data, 69K Total
13859 Debug Version: 137K Code, 58K Data, 195K Total
13863 Implemented wbinvd() macro, pending a kernel-wide definition.
13865 Fixed /proc/acpi/event to handle poll() and short reads.
13867 ASL Compiler, version X2026:
13869 Fixed a problem introduced in the previous label where the AML
13871 code emitted for package objects produced packages with zero
13874 ----------------------------------------
13875 Summary of changes for this label: 08_16_01
13877 ACPI CA Core Subsystem:
13879 The following ACPI 2.0 ASL operators have been implemented in the
13880 AML interpreter (These are already supported by the Intel ASL
13881 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
13882 ToBuffer. Support for 64-bit AML constants is implemented in the
13883 AML parser, debugger, and disassembler.
13885 The internal memory tracking mechanism (leak detection code) has
13886 been upgraded to reduce the memory overhead (a separate tracking
13887 block is no longer allocated for each memory allocation), and now
13888 supports all of the internal object caches.
13890 The data structures and code for the internal object caches have
13891 been coelesced and optimized so that there is a single cache and
13892 memory list data structure and a single group of functions that
13893 implement generic cache management. This has reduced the code
13894 size in both the debug and release versions of the subsystem.
13896 The DEBUG_PRINT macro(s) have been optimized for size and replaced
13897 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
13898 different, because it generates a single call to an internal
13899 function. This results in a savings of about 90 bytes per
13900 invocation, resulting in an overall code and data savings of about
13901 16% in the debug version of the subsystem.
13905 Fixed C3 disk corruption problems and re-enabled C3 on supporting
13908 Integrated low-level sleep code by Patrick Mochel.
13910 Further tweaked source code Linuxization.
13916 Support for ACPI 2.0 variable length packages is fixed/completed.
13918 Fixed a problem where the optional length parameter for the ACPI
13919 2.0 ToString operator.
13921 Fixed multiple extraneous error messages when a syntax error is
13922 detected within the declaration line of a control method.
13924 ----------------------------------------
13925 Summary of changes for this label: 07_17_01
13927 ACPI CA Core Subsystem:
13929 Added a new interface named AcpiGetFirmwareTable to obtain any
13930 ACPI table via the ACPI signature. The interface can be called at
13931 any time during kernel initialization, even before the kernel
13932 virtual memory manager is initialized and paging is enabled. This
13933 allows kernel subsystems to obtain ACPI tables very early, even
13934 before the ACPI CA subsystem is initialized.
13936 Fixed a problem where Fields defined with the AnyAcc attribute
13937 could be resolved to the incorrect address under the following
13938 conditions: 1) the field width is larger than 8 bits and 2) the
13939 parent operation region is not defined on a DWORD boundary.
13941 Fixed a problem where the interpreter is not being locked during
13942 namespace initialization (during execution of the _INI control
13943 methods), causing an error when an attempt is made to release it
13946 ACPI 2.0 support in the AML Interpreter has begun and will be
13947 ongoing throughout the rest of this year. In this label, The Mod
13948 operator is implemented.
13950 Added a new data type to contain full PCI addresses named
13951 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
13952 and Function values.
13956 Enhanced the Linux version of the source code to change most
13957 capitalized ACPI type names to lowercase. For example, all
13958 instances of ACPI_STATUS are changed to acpi_status. This will
13959 result in a large diff, but the change is strictly cosmetic and
13960 aligns the CA code closer to the Linux coding standard.
13964 The interfaces to the PCI configuration space have been changed to
13965 add the PCI Segment number and to split the single 32-bit combined
13966 DeviceFunction field into two 16-bit fields. This was
13967 accomplished by moving the four values that define an address in
13968 PCI configuration space (segment, bus, device, and function) to
13969 the new ACPI_PCI_ID structure.
13971 The changes to the PCI configuration space interfaces led to a
13972 reexamination of the complete set of address space access
13973 interfaces for PCI, I/O, and Memory. The previously existing 18
13974 interfaces have proven difficult to maintain (any small change
13975 must be propagated across at least 6 interfaces) and do not easily
13976 allow for future expansion to 64 bits if necessary. Also, on some
13977 systems, it would not be appropriate to demultiplex the access
13978 width (8, 16, 32,or 64) before calling the OSL if the
13979 corresponding native OS interfaces contain a similar access width
13980 parameter. For these reasons, the 18 address space interfaces
13981 have been replaced by these 6 new ones:
13983 AcpiOsReadPciConfiguration
13984 AcpiOsWritePciConfiguration
13990 Added a new interface named AcpiOsGetRootPointer to allow the OSL
13991 to perform the platform and/or OS-specific actions necessary to
13992 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
13993 interface will simply call down to the CA core to perform the low-
13994 memory search for the table. On IA-64, the RSDP is obtained from
13995 EFI. Migrating this interface to the OSL allows the CA core to
13997 remain OS and platform independent.
13999 Added a new interface named AcpiOsSignal to provide a generic
14000 "function code and pointer" interface for various miscellaneous
14001 signals and notifications that must be made to the host OS. The
14002 first such signals are intended to support the ASL Fatal and
14003 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14004 interface has been obsoleted.
14006 The definition of the AcpiFormatException interface has been
14007 changed to simplify its use. The caller no longer must supply a
14008 buffer to the call; A pointer to a const string is now returned
14009 directly. This allows the call to be easily used in printf
14010 statements, etc. since the caller does not have to manage a local
14014 ASL Compiler, Version X2025:
14016 The ACPI 2.0 Switch/Case/Default operators have been implemented
14017 and are fully functional. They will work with all ACPI 1.0
14018 interpreters, since the operators are simply translated to If/Else
14021 The ACPI 2.0 ElseIf operator is implemented and will also work
14022 with 1.0 interpreters, for the same reason.
14024 Implemented support for ACPI 2.0 variable-length packages. These
14025 packages have a separate opcode, and their size is determined by
14026 the interpreter at run-time.
14028 Documentation The ACPI CA Programmer Reference has been updated to
14029 reflect the new interfaces and changes to existing interfaces.
14031 ------------------------------------------
14032 Summary of changes for this label: 06_15_01
14034 ACPI CA Core Subsystem:
14036 Fixed a problem where a DWORD-accessed field within a Buffer
14037 object would get its byte address inadvertently rounded down to
14038 the nearest DWORD. Buffers are always Byte-accessible.
14040 ASL Compiler, version X2024:
14042 Fixed a problem where the Switch() operator would either fault or
14043 hang the compiler. Note however, that the AML code for this ACPI
14044 2.0 operator is not yet implemented.
14046 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14049 Implementation of the CreateField operator automatically converts
14050 a reference to a named field within a resource descriptor from a
14051 byte offset to a bit offset if required.
14053 Added some missing named fields from the resource descriptor
14054 support. These are the names that are automatically created by the
14055 compiler to reference fields within a descriptor. They are only
14056 valid at compile time and are not passed through to the AML
14059 Resource descriptor named fields are now typed as Integers and
14060 subject to compile-time typechecking when used in expressions.
14062 ------------------------------------------
14063 Summary of changes for this label: 05_18_01
14065 ACPI CA Core Subsystem:
14067 Fixed a couple of problems in the Field support code where bits
14068 from adjacent fields could be returned along with the proper field
14069 bits. Restructured the field support code to improve performance,
14070 readability and maintainability.
14072 New DEBUG_PRINTP macro automatically inserts the procedure name
14073 into the output, saving hundreds of copies of procedure name
14074 strings within the source, shrinking the memory footprint of the
14075 debug version of the core subsystem.
14077 Source Code Structure:
14079 The source code directory tree was restructured to reflect the
14080 current organization of the component architecture. Some files
14081 and directories have been moved and/or renamed.
14085 Fixed leaking kacpidpc processes.
14087 Fixed queueing event data even when /proc/acpi/event is not
14090 ASL Compiler, version X2020:
14092 Memory allocation performance enhancement - over 24X compile time
14093 improvement on large ASL files. Parse nodes and namestring
14094 buffers are now allocated from a large internal compiler buffer.
14096 The temporary .SRC file is deleted unless the "-s" option is
14099 The "-d" debug output option now sends all output to the .DBG file
14100 instead of the console.
14102 "External" second parameter is now optional
14104 "ElseIf" syntax now properly allows the predicate
14106 Last operand to "Load" now recognized as a Target operand
14108 Debug object can now be used anywhere as a normal object.
14110 ResourceTemplate now returns an object of type BUFFER
14112 EISAID now returns an object of type INTEGER
14114 "Index" now works with a STRING operand
14116 "LoadTable" now accepts optional parameters
14118 "ToString" length parameter is now optional
14120 "Interrupt (ResourceType," parse error fixed.
14122 "Register" with a user-defined region space parse error fixed
14124 Escaped backslash at the end of a string ("\\") scan/parse error
14127 "Revision" is now an object of type INTEGER.
14131 ------------------------------------------
14132 Summary of changes for this label: 05_02_01
14136 /proc/acpi/event now blocks properly.
14138 Removed /proc/sys/acpi. You can still dump your DSDT from
14141 ACPI CA Core Subsystem:
14143 Fixed a problem introduced in the previous label where some of the
14144 "small" resource descriptor types were not recognized.
14146 Improved error messages for the case where an ASL Field is outside
14147 the range of the parent operation region.
14149 ASL Compiler, version X2018:
14152 Added error detection for ASL Fields that extend beyond the length
14153 of the parent operation region (only if the length of the region
14154 is known at compile time.) This includes fields that have a
14155 minimum access width that is smaller than the parent region, and
14156 individual field units that are partially or entirely beyond the
14157 extent of the parent.
14161 ------------------------------------------
14162 Summary of changes for this label: 04_27_01
14164 ACPI CA Core Subsystem:
14166 Fixed a problem where the namespace mutex could be released at the
14167 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14169 Added optional thread ID output for debug traces, to simplify
14170 debugging of multiple threads. Added context switch notification
14171 when the debug code realizes that a different thread is now
14172 executing ACPI code.
14174 Some additional external data types have been prefixed with the
14175 string "ACPI_" for consistency. This may effect existing code.
14176 The data types affected are the external callback typedefs - e.g.,
14178 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14182 Fixed an issue with the OSL semaphore implementation where a
14183 thread was waking up with an error from receiving a SIGCHLD
14186 Linux version of ACPI CA now uses the system C library for string
14187 manipulation routines instead of a local implementation.
14189 Cleaned up comments and removed TBDs.
14191 ASL Compiler, version X2017:
14193 Enhanced error detection and reporting for all file I/O
14198 Programmer Reference updated to version 1.06.
14202 ------------------------------------------
14203 Summary of changes for this label: 04_13_01
14205 ACPI CA Core Subsystem:
14207 Restructured support for BufferFields and RegionFields.
14208 BankFields support is now fully operational. All known 32-bit
14209 limitations on field sizes have been removed. Both BufferFields
14210 and (Operation) RegionFields are now supported by the same field
14213 Resource support now supports QWORD address and IO resources. The
14214 16/32/64 bit address structures and the Extended IRQ structure
14215 have been changed to properly handle Source Resource strings.
14217 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14218 condition internally and must never be returned by AcpiOsThreadId.
14219 This reserved value was changed from 0 since Unix systems allow a
14224 Driver code reorganized to enhance portability
14226 Added a kernel configuration option to control ACPI_DEBUG
14228 Fixed the EC driver to honor _GLK.
14230 ASL Compiler, version X2016:
14232 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14233 address space was set to 0, not 0x7f as it should be.
14235 ------------------------------------------
14236 Summary of changes for this label: 03_13_01
14238 ACPI CA Core Subsystem:
14240 During ACPI initialization, the _SB_._INI method is now run if
14243 Notify handler fix - notifies are deferred until the parent method
14244 completes execution. This fixes the "mutex already acquired"
14245 issue seen occasionally.
14247 Part of the "implicit conversion" rules in ACPI 2.0 have been
14248 found to cause compatibility problems with existing ASL/AML. The
14249 convert "result-to-target-type" implementation has been removed
14250 for stores to method Args and Locals. Source operand conversion
14251 is still fully implemented. Possible changes to ACPI 2.0
14252 specification pending.
14254 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14257 Fix for compiler warnings for 64-bit compiles.
14261 /proc output aligned for easier parsing.
14263 Release-version compile problem fixed.
14265 New kernel configuration options documented in Configure.help.
14267 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14272 Power resource driver integrated with bus manager.
14274 Fixed kernel fault during active cooling for thermal zones.
14278 The source code tree has been restructured.
14282 ------------------------------------------
14283 Summary of changes for this label: 03_02_01
14285 Linux OS Services Layer (OSL):
14287 Major revision of all Linux-specific code.
14289 Modularized all ACPI-specific drivers.
14291 Added new thermal zone and power resource drivers.
14293 Revamped /proc interface (new functionality is under /proc/acpi).
14295 New kernel configuration options.
14297 Linux known issues:
14299 New kernel configuration options not documented in Configure.help
14303 Module dependencies not currently implemented. If used, they
14304 should be loaded in this order: busmgr, power, ec, system,
14305 processor, battery, ac_adapter, button, thermal.
14307 Modules will not load if CONFIG_MODVERSION is set.
14309 IBM 600E - entering S5 may reboot instead of shutting down.
14311 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14314 Some systems may fail with "execution mutex already acquired"
14317 ACPI CA Core Subsystem:
14319 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14320 for the deadlock detection code. Defined to return a non-zero, 32-
14321 bit thread ID for the currently executing thread. May be a non-
14322 zero constant integer on single-thread systems.
14324 Implemented deadlock detection for internal subsystem mutexes. We
14325 may add conditional compilation for this code (debug only) later.
14327 ASL/AML Mutex object semantics are now fully supported. This
14328 includes multiple acquires/releases by owner and support for the
14330 Mutex SyncLevel parameter.
14332 A new "Force Release" mechanism automatically frees all ASL
14333 Mutexes that have been acquired but not released when a thread
14334 exits the interpreter. This forces conformance to the ACPI spec
14335 ("All mutexes must be released when an invocation exits") and
14336 prevents deadlocked ASL threads. This mechanism can be expanded
14337 (later) to monitor other resource acquisitions if OEM ASL code
14338 continues to misbehave (which it will).
14340 Several new ACPI exception codes have been added for the Mutex
14343 Recursive method calls are now allowed and supported (the ACPI
14344 spec does in fact allow recursive method calls.) The number of
14345 recursive calls is subject to the restrictions imposed by the
14346 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14349 Implemented support for the SyncLevel parameter for control
14350 methods (ACPI 2.0 feature)
14352 Fixed a deadlock problem when multiple threads attempted to use
14355 Fixed a problem where the string length of a String package
14356 element was not always set in a package returned from
14357 AcpiEvaluateObject.
14359 Fixed a problem where the length of a String package element was
14360 not always included in the length of the overall package returned
14361 from AcpiEvaluateObject.
14363 Added external interfaces (Acpi*) to the ACPI debug memory
14364 manager. This manager keeps a list of all outstanding
14365 allocations, and can therefore detect memory leaks and attempts to
14366 free memory blocks more than once. Useful for code such as the
14367 power manager, etc. May not be appropriate for device drivers.
14368 Performance with the debug code enabled is slow.
14370 The ACPI Global Lock is now an optional hardware element.
14372 ASL Compiler Version X2015:
14374 Integrated changes to allow the compiler to be generated on
14375 multiple platforms.
14377 Linux makefile added to generate the compiler on Linux
14381 All platform-specific headers have been moved to their own
14382 subdirectory, Include/Platform.
14384 New source file added, Interpreter/ammutex.c
14386 New header file, Include/acstruct.h
14390 The programmer reference has been updated for the following new
14391 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
14393 ------------------------------------------
14394 Summary of changes for this label: 02_08_01
14396 Core ACPI CA Subsystem: Fixed a problem where an error was
14397 incorrectly returned if the return resource buffer was larger than
14398 the actual data (in the resource interfaces).
14400 References to named objects within packages are resolved to the
14402 full pathname string before packages are returned directly (via
14403 the AcpiEvaluateObject interface) or indirectly via the resource
14406 Linux OS Services Layer (OSL):
14408 Improved /proc battery interface.
14411 Added C-state debugging output and other miscellaneous fixes.
14413 ASL Compiler Version X2014:
14415 All defined method arguments can now be used as local variables,
14416 including the ones that are not actually passed in as parameters.
14417 The compiler tracks initialization of the arguments and issues an
14418 exception if they are used without prior assignment (just like
14421 The -o option now specifies a filename prefix that is used for all
14422 output files, including the AML output file. Otherwise, the
14423 default behavior is as follows: 1) the AML goes to the file
14424 specified in the DSDT. 2) all other output files use the input
14425 source filename as the base.
14427 ------------------------------------------
14428 Summary of changes for this label: 01_25_01
14430 Core ACPI CA Subsystem: Restructured the implementation of object
14431 store support within the interpreter. This includes support for
14432 the Store operator as well as any ASL operators that include a
14435 Partially implemented support for Implicit Result-to-Target
14436 conversion. This is when a result object is converted on the fly
14437 to the type of an existing target object. Completion of this
14438 support is pending further analysis of the ACPI specification
14439 concerning this matter.
14441 CPU-specific code has been removed from the subsystem (hardware
14444 New Power Management Timer functions added
14446 Linux OS Services Layer (OSL): Moved system state transition code
14447 to the core, fixed it, and modified Linux OSL accordingly.
14449 Fixed C2 and C3 latency calculations.
14452 We no longer use the compilation date for the version message on
14453 initialization, but retrieve the version from AcpiGetSystemInfo().
14455 Incorporated for fix Sony VAIO machines.
14457 Documentation: The Programmer Reference has been updated and
14461 ASL Compiler: Version X2013: Fixed a problem where the line
14462 numbering and error reporting could get out of sync in the
14463 presence of multiple include files.
14465 ------------------------------------------
14466 Summary of changes for this label: 01_15_01
14468 Core ACPI CA Subsystem:
14470 Implemented support for type conversions in the execution of the
14471 ASL Concatenate operator (The second operand is converted to
14472 match the type of the first operand before concatenation.)
14474 Support for implicit source operand conversion is partially
14475 implemented. The ASL source operand types Integer, Buffer, and
14476 String are freely interchangeable for most ASL operators and are
14477 converted by the interpreter on the fly as required. Implicit
14478 Target operand conversion (where the result is converted to the
14479 target type before storing) is not yet implemented.
14481 Support for 32-bit and 64-bit BCD integers is implemented.
14483 Problem fixed where a field read on an aligned field could cause a
14484 read past the end of the field.
14486 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
14487 does not return a value, but the caller expects one. (The ASL
14488 compiler flags this as a warning.)
14493 1. Static typechecking of all operands is implemented. This
14494 prevents the use of invalid objects (such as using a Package where
14495 an Integer is required) at compile time instead of at interpreter
14497 2. The ASL source line is printed with ALL errors and warnings.
14498 3. Bug fix for source EOF without final linefeed.
14499 4. Debug option is split into a parse trace and a namespace trace.
14500 5. Namespace output option (-n) includes initial values for
14501 integers and strings.
14502 6. Parse-only option added for quick syntax checking.
14503 7. Compiler checks for duplicate ACPI name declarations
14506 1. Relaxed typechecking to allow interchangeability between
14507 strings, integers, and buffers. These types are now converted by
14508 the interpreter at runtime.
14509 2. Compiler reports time taken by each internal subsystem in the
14513 ------------------------------------------
14514 Summary of changes for this label: 12_14_00
14518 This is the first official release of the compiler. Since the
14519 compiler requires elements of the Core Subsystem, this label
14520 synchronizes everything.
14522 ------------------------------------------
14523 Summary of changes for this label: 12_08_00
14526 Fixed a problem where named references within the ASL definition
14527 of both OperationRegions and CreateXXXFields did not work
14528 properly. The symptom was an AE_AML_OPERAND_TYPE during
14529 initialization of the region/field. This is similar (but not
14530 related internally) to the problem that was fixed in the last
14533 Implemented both 32-bit and 64-bit support for the BCD ASL
14534 functions ToBCD and FromBCD.
14536 Updated all legal headers to include "2000" in the copyright
14539 ------------------------------------------
14540 Summary of changes for this label: 12_01_00
14542 Fixed a problem where method invocations within the ASL definition
14543 of both OperationRegions and CreateXXXFields did not work
14544 properly. The symptom was an AE_AML_OPERAND_TYPE during
14545 initialization of the region/field:
14547 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
14548 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
14551 Fixed a problem where operators with more than one nested
14552 subexpression would fail. The symptoms were varied, by mostly
14553 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
14554 problem that has gone unnoticed until now.
14556 Subtract (Add (1,2), Multiply (3,4))
14558 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
14559 previous build (The prefix part of a relative path was handled
14562 Fixed a problem where Operation Region initialization failed if
14563 the operation region name was a "namepath" instead of a simple
14564 "nameseg". Symptom was an AE_NO_OPERAND error.
14566 Fixed a problem where an assignment to a local variable via the
14567 indirect RefOf mechanism only worked for the first such
14568 assignment. Subsequent assignments were ignored.
14570 ------------------------------------------
14571 Summary of changes for this label: 11_15_00
14573 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
14574 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
14575 the AML interpreter does NOT have support for the new 2.0 ASL
14576 grammar terms at this time.
14578 All ACPI hardware access is via the GAS structures in the ACPI 2.0
14581 All physical memory addresses across all platforms are now 64 bits
14582 wide. Logical address width remains dependent on the platform
14585 AcpiOsMapMemory interface changed to a 64-bit physical address.
14587 The AML interpreter integer size is now 64 bits, as per the ACPI
14590 For backwards compatibility with ACPI 1.0, ACPI tables with a
14591 revision number less than 2 use 32-bit integers only.
14593 Fixed a problem where the evaluation of OpRegion operands did not
14594 always resolve them to numbers properly.
14596 ------------------------------------------
14597 Summary of changes for this label: 10_20_00
14599 Fix for CBN_._STA issue. This fix will allow correct access to
14600 CBN_ OpRegions when the _STA returns 0x8.
14602 Support to convert ACPI constants (Ones, Zeros, One) to actual
14603 values before a package object is returned
14605 Fix for method call as predicate to if/while construct causing
14606 incorrect if/while behavior
14608 Fix for Else block package lengths sometimes calculated wrong (if
14611 Fix for Processor object length field, was always zero
14613 Table load abort if FACP sanity check fails
14615 Fix for problem with Scope(name) if name already exists
14617 Warning emitted if a named object referenced cannot be found
14618 (resolved) during method execution.
14624 ------------------------------------------
14625 Summary of changes for this label: 9_29_00
14627 New table initialization interfaces: AcpiInitializeSubsystem no
14628 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
14629 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
14630 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
14633 Note: These interface changes require changes to all existing OSDs
14635 The PCI_Config default address space handler is always installed
14636 at the root namespace object.
14638 -------------------------------------------
14639 Summary of changes for this label: 09_15_00
14641 The new initialization architecture is implemented. New
14642 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
14643 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
14645 (Namespace is automatically loaded when a table is loaded)
14647 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
14648 52 bytes to 32 bytes. There is usually one of these for every
14649 namespace object, so the memory savings is significant.
14651 Implemented just-in-time evaluation of the CreateField operators.
14653 Bug fixes for IA-64 support have been integrated.
14655 Additional code review comments have been implemented
14657 The so-called "third pass parse" has been replaced by a final walk
14658 through the namespace to initialize all operation regions (address
14659 spaces) and fields that have not yet been initialized during the
14660 execution of the various _INI and REG methods.
14662 New file - namespace/nsinit.c
14664 -------------------------------------------
14665 Summary of changes for this label: 09_01_00
14667 Namespace manager data structures have been reworked to change the
14668 primary object from a table to a single object. This has
14669 resulted in dynamic memory savings of 3X within the namespace and
14670 2X overall in the ACPI CA subsystem.
14672 Fixed problem where the call to AcpiEvFindPciRootBuses was
14673 inadvertently left commented out.
14675 Reduced the warning count when generating the source with the GCC
14678 Revision numbers added to each module header showing the
14679 SourceSafe version of the file. Please refer to this version
14680 number when giving us feedback or comments on individual modules.
14682 The main object types within the subsystem have been renamed to
14683 clarify their purpose:
14685 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
14686 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
14687 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
14689 NOTE: no changes to the initialization sequence are included in
14692 -------------------------------------------
14693 Summary of changes for this label: 08_23_00
14695 Fixed problem where TerminateControlMethod was being called
14696 multiple times per method
14698 Fixed debugger problem where single stepping caused a semaphore to
14701 Improved performance through additional parse object caching -
14702 added ACPI_EXTENDED_OP type
14704 -------------------------------------------
14705 Summary of changes for this label: 08_10_00
14707 Parser/Interpreter integration: Eliminated the creation of
14708 complete parse trees for ACPI tables and control methods.
14709 Instead, parse subtrees are created and then deleted as soon as
14710 they are processed (Either entered into the namespace or executed
14711 by the interpreter). This reduces the use of dynamic kernel
14712 memory significantly. (about 10X)
14714 Exception codes broken into classes and renumbered. Be sure to
14715 recompile all code that includes acexcep.h. Hopefully we won't
14716 have to renumber the codes again now that they are split into
14717 classes (environment, programmer, AML code, ACPI table, and
14720 Fixed some additional alignment issues in the Resource Manager
14723 Implemented semaphore tracking in the AcpiExec utility, and fixed
14724 several places where mutexes/semaphores were being unlocked
14725 without a corresponding lock operation. There are no known
14726 semaphore or mutex "leaks" at this time.
14728 Fixed the case where an ASL Return operator is used to return an
14731 -------------------------------------------
14732 Summary of changes for this label: 07_28_00
14734 Fixed a problem with the way addresses were calculated in
14735 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
14736 manifested itself when a Field was created with WordAccess or
14737 DwordAccess, but the field unit defined within the Field was less
14739 than a Word or Dword.
14741 Fixed a problem in AmlDumpOperands() module's loop to pull
14742 operands off of the operand stack to display information. The
14743 problem manifested itself as a TLB error on 64-bit systems when
14744 accessing an operand stack with two or more operands.
14746 Fixed a problem with the PCI configuration space handlers where
14747 context was getting confused between accesses. This required a
14748 change to the generic address space handler and address space
14749 setup definitions. Handlers now get both a global handler context
14750 (this is the one passed in by the user when executing
14751 AcpiInstallAddressSpaceHandler() and a specific region context
14752 that is unique to each region (For example, the _ADR, _SEG and
14753 _BBN values associated with a specific region). The generic
14754 function definitions have changed to the following:
14756 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
14757 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
14758 *HandlerContext, // This used to be void *Context void
14759 *RegionContext); // This is an additional parameter
14761 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
14762 RegionHandle, UINT32 Function, void *HandlerContext, void
14763 **RegionContext); // This used to be **ReturnContext
14765 -------------------------------------------
14766 Summary of changes for this label: 07_21_00
14768 Major file consolidation and rename. All files within the
14769 interpreter have been renamed as well as most header files. This
14770 was done to prevent collisions with existing files in the host
14771 OSs -- filenames such as "config.h" and "global.h" seem to be
14772 quite common. The VC project files have been updated. All
14773 makefiles will require modification.
14775 The parser/interpreter integration continues in Phase 5 with the
14776 implementation of a complete 2-pass parse (the AML is parsed
14777 twice) for each table; This avoids the construction of a huge
14778 parse tree and therefore reduces the amount of dynamic memory
14779 required by the subsystem. Greater use of the parse object cache
14780 means that performance is unaffected.
14782 Many comments from the two code reviews have been rolled in.
14784 The 64-bit alignment support is complete.
14786 -------------------------------------------
14787 Summary of changes for this label: 06_30_00
14789 With a nod and a tip of the hat to the technology of yesteryear,
14790 we've added support in the source code for 80 column output
14791 devices. The code is now mostly constrained to 80 columns or
14792 less to support environments and editors that 1) cannot display
14793 or print more than 80 characters on a single line, and 2) cannot
14794 disable line wrapping.
14796 A major restructuring of the namespace data structure has been
14797 completed. The result is 1) cleaner and more
14798 understandable/maintainable code, and 2) a significant reduction
14799 in the dynamic memory requirement for each named ACPI object
14802 -------------------------------------------
14803 Summary of changes for this label: 06_23_00
14805 Linux support has been added. In order to obtain approval to get
14806 the ACPI CA subsystem into the Linux kernel, we've had to make
14807 quite a few changes to the base subsystem that will affect all
14808 users (all the changes are generic and OS- independent). The
14809 effects of these global changes have been somewhat far reaching.
14810 Files have been merged and/or renamed and interfaces have been
14811 renamed. The major changes are described below.
14813 Osd* interfaces renamed to AcpiOs* to eliminate namespace
14814 pollution/confusion within our target kernels. All OSD
14815 interfaces must be modified to match the new naming convention.
14817 Files merged across the subsystem. A number of the smaller source
14818 and header files have been merged to reduce the file count and
14819 increase the density of the existing files. There are too many
14820 to list here. In general, makefiles that call out individual
14821 files will require rebuilding.
14823 Interpreter files renamed. All interpreter files now have the
14824 prefix am* instead of ie* and is*.
14826 Header files renamed: The acapi.h file is now acpixf.h. The
14827 acpiosd.h file is now acpiosxf.h. We are removing references to
14828 the acronym "API" since it is somewhat windowsy. The new name is
14829 "external interface" or xface or xf in the filenames.j
14832 All manifest constants have been forced to upper case (some were
14833 mixed case.) Also, the string "ACPI_" has been prepended to many
14834 (not all) of the constants, typedefs, and structs.
14836 The globals "DebugLevel" and "DebugLayer" have been renamed
14837 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
14839 All other globals within the subsystem are now prefixed with
14840 "AcpiGbl_" Internal procedures within the subsystem are now
14841 prefixed with "Acpi" (with only a few exceptions). The original
14842 two-letter abbreviation for the subcomponent remains after "Acpi"
14843 - for example, CmCallocate became AcpiCmCallocate.
14845 Added a source code translation/conversion utility. Used to
14846 generate the Linux source code, it can be modified to generate
14847 other types of source as well. Can also be used to cleanup
14848 existing source by removing extraneous spaces and blank lines.
14849 Found in tools/acpisrc/*
14851 OsdUnMapMemory was renamed to OsdUnmapMemory and then
14852 AcpiOsUnmapMemory. (UnMap became Unmap).
14854 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
14855 When set to one, this indicates that the caller wants to use the
14857 semaphore as a mutex, not a counting semaphore. ACPI CA uses
14858 both types. However, implementers of this call may want to use
14859 different OS primitives depending on the type of semaphore
14860 requested. For example, some operating systems provide separate
14862 "mutex" and "semaphore" interfaces - where the mutex interface is
14863 much faster because it doesn't have all the overhead of a full
14864 semaphore implementation.
14866 Fixed a deadlock problem where a method that accesses the PCI
14867 address space can block forever if it is the first access to the
14870 -------------------------------------------
14871 Summary of changes for this label: 06_02_00
14873 Support for environments that cannot handle unaligned data
14874 accesses (e.g. firmware and OS environments devoid of alignment
14875 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
14876 been added (via configurable macros) in these three areas: -
14877 Transfer of data from the raw AML byte stream is done via byte
14878 moves instead of word/dword/qword moves. - External objects are
14879 aligned within the user buffer, including package elements (sub-
14880 objects). - Conversion of name strings to UINT32 Acpi Names is now
14883 The Store operator was modified to mimic Microsoft's
14884 implementation when storing to a Buffer Field.
14886 Added a check of the BM_STS bit before entering C3.
14888 The methods subdirectory has been obsoleted and removed. A new
14889 file, cmeval.c subsumes the functionality.
14891 A 16-bit (DOS) version of AcpiExec has been developed. The
14892 makefile is under the acpiexec directory.