1 ----------------------------------------
2 24 April 2014. Summary of changes for version 20140424:
4 1) ACPICA kernel-resident subsystem:
6 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
7 Some of these tables are known to contain a trailing NULL entry. Lv
10 Removed an extraneous error message for the case where there are a large
11 number of system GPEs (> 124). This was the "32-bit FADT register is too
12 long to convert to GAS struct" message, which is irrelevant for GPEs
13 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
14 (limited capacity) GAS bit length. Also, several changes to ensure proper
15 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
18 Implemented and deployed additional configuration support for the public
19 ACPICA external interfaces. Entire classes of interfaces can now be
20 easily modified or configured out, replaced by stubbed inline functions
23 Moved all public ACPICA runtime configuration globals to the public
24 ACPICA external interface file for convenience. Also, removed some
25 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
27 Documentation: Added a new section to the ACPICA reference describing the
28 maximum number of GPEs that can be supported by the FADT-defined GPEs in
29 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
32 Example Code and Data Size: These are the sizes for the OS-independent
33 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
34 debug version of the code includes the debug output trace mechanism and
35 has a much larger code and data size.
38 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
39 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
41 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
42 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
45 2) iASL Compiler/Disassembler and Tools:
47 iASL and disassembler: Add full support for the LPIT table (Low Power
48 Idle Table). Includes support in the disassembler, data table compiler,
49 and template generator.
52 1) Add option to force the use of the RSDT (over the XSDT).
53 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
55 iASL: Add check for predefined packages that are too large. For
56 predefined names that contain subpackages, check if each subpackage is
57 too large. (Check for too small already exists.)
59 Debugger: Updated the GPE command (which simulates a GPE by executing the
60 GPE code paths in ACPICA). The GPE device is now optional, and defaults
61 to the GPE 0/1 FADT-defined blocks.
63 Unix application OSL: Update line-editing support. Add additional error
64 checking and take care not to reset terminal attributes on exit if they
65 were never set. This should help guarantee that the terminal is always
66 left in the previous state on program exit.
68 ----------------------------------------
69 25 March 2014. Summary of changes for version 20140325:
71 1) ACPICA kernel-resident subsystem:
73 Updated the auto-serialize feature for control methods. This feature
74 automatically serializes all methods that create named objects in order
75 to prevent runtime errors. The update adds support to ignore the
76 currently executing AML SyncLevel when invoking such a method, in order
77 to prevent disruption of any existing SyncLevel priorities that may exist
78 in the AML code. Although the use of SyncLevels is relatively rare, this
79 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
80 appear on some machines starting with the 20140214 release.
82 Added a new external interface to allow the host to install ACPI tables
83 very early, before the namespace is even created. AcpiInstallTable gives
84 the host additional flexibility for ACPI table management. Tables can be
85 installed directly by the host as if they had originally appeared in the
86 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
87 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
88 with additional internal restructuring and cleanup. See the ACPICA
89 Reference for interface details. Lv Zheng.
91 Added validation of the checksum for all incoming dynamically loaded
92 tables (via external interfaces or via AML Load/LoadTable operators). Lv
95 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
96 and GPE handler removal. Restructured calls to eliminate possible race
99 Added a warning for the use/execution of the ASL/AML Unload (table)
100 operator. This will help detect and identify machines that use this
101 operator if and when it is ever used. This operator has never been seen
102 in the field and the usage model and possible side-effects of the drastic
103 runtime action of a full table removal are unknown.
105 Reverted the use of #pragma push/pop which was introduced in the 20140214
106 release. It appears that push and pop are not implemented by enough
107 compilers to make the use of this feature feasible for ACPICA at this
108 time. However, these operators may be deployed in a future ACPICA
111 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
114 Source code generation:
115 1) Disabled the use of the "strchr" macro for the gcc-specific
116 generation. For some versions of gcc, this macro can periodically expose
117 a compiler bug which in turn causes compile-time error(s).
118 2) Added support for PPC64 compilation. Colin Ian King.
120 Example Code and Data Size: These are the sizes for the OS-independent
121 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
122 debug version of the code includes the debug output trace mechanism and
123 has a much larger code and data size.
126 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
127 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
129 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
130 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
133 2) iASL Compiler/Disassembler and Tools:
135 Disassembler: Added several new features to improve the readability of
136 the resulting ASL code. Extra information is emitted within comment
137 fields in the ASL code:
138 1) Known _HID/_CID values are decoded to descriptive text.
139 2) Standard values for the Notify() operator are decoded to descriptive
141 3) Target operands are expanded to full pathnames (in a comment) when
144 Disassembler: Miscellaneous updates for extern() handling:
145 1) Abort compiler if file specified by -fe option does not exist.
146 2) Silence unnecessary warnings about argument count mismatches.
147 3) Update warning messages concerning unresolved method externals.
148 4) Emit "UnknownObj" keyword for externals whose type cannot be
152 1) Added the -a option to display both the ASL syntax and the AML
153 encoding for an input ASL operator. This effectively displays all known
154 information about an ASL operator with one AcpiHelp invocation.
155 2) Added substring match support (similar to a wildcard) for the -i
156 (_HID/PNP IDs) option.
158 iASL/Disassembler: Since this tool does not yet support execution on big-
159 endian machines, added detection of endianness and an error message if
160 execution is attempted on big-endian. Support for big-endian within iASL
161 is a feature that is on the ACPICA to-be-done list.
164 1) Remove option to extract binary files from an acpidump; this function
165 is made obsolete by the AcpiXtract utility.
166 2) General cleanup of open files and allocated buffers.
168 ----------------------------------------
169 14 February 2014. Summary of changes for version 20140214:
171 1) ACPICA kernel-resident subsystem:
173 Implemented a new mechanism to proactively prevent problems with ill-
174 behaved reentrant control methods that create named ACPI objects. This
175 behavior is illegal as per the ACPI specification, but is nonetheless
176 frequently seen in the field. Previously, this could lead to an
177 AE_ALREADY_EXISTS exception if the method was actually entered by more
178 than one thread. This new mechanism detects such methods at table load
179 time and marks them "serialized" to prevent reentrancy. A new global
180 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
181 feature if desired. This mechanism and global option obsoletes and
182 supersedes the previous AcpiGbl_SerializeAllMethods option.
184 Added the "Windows 2013" string to the _OSI support. ACPICA will now
185 respond TRUE to _OSI queries with this string. It is the stated policy of
186 ACPICA to add new strings to the _OSI support as soon as possible after
187 they are defined. See the full ACPICA _OSI policy which has been added to
188 the utilities/utosi.c file.
190 Hardened/updated the _PRT return value auto-repair code:
191 1) Do not abort the repair on a single subpackage failure, continue to
192 check all subpackages.
193 2) Add check for the minimum subpackage length (4).
194 3) Properly handle extraneous NULL package elements.
196 Added support to avoid the possibility of infinite loops when traversing
197 object linked lists. Never allow an infinite loop, even in the face of
198 corrupted object lists.
200 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
201 pack(pop) directives to ensure that the ACPICA headers are independent of
202 compiler settings or other host headers.
204 Example Code and Data Size: These are the sizes for the OS-independent
205 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
206 debug version of the code includes the debug output trace mechanism and
207 has a much larger code and data size.
210 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
211 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
213 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
214 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
217 2) iASL Compiler/Disassembler and Tools:
219 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
220 first reserved field was incorrectly forced to have a value of zero. This
221 change correctly forces the field to have a value of one. ACPICA BZ 1081.
223 Debugger: Added missing support for the "Extra" and "Data" subobjects
224 when displaying object data.
226 Debugger: Added support to display entire object linked lists when
227 displaying object data.
229 iASL: Removed the obsolete -g option to obtain ACPI tables from the
230 Windows registry. This feature has been superseded by the acpidump
233 ----------------------------------------
234 14 January 2014. Summary of changes for version 20140114:
236 1) ACPICA kernel-resident subsystem:
238 Updated all ACPICA copyrights and signons to 2014. Added the 2014
239 copyright to all module headers and signons, including the standard Linux
240 header. This affects virtually every file in the ACPICA core subsystem,
241 iASL compiler, all ACPICA utilities, and the test suites.
243 Improved parameter validation for AcpiInstallGpeBlock. Added the
245 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
246 2) There is not already a GPE block attached to the device.
247 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
250 Correctly support "references" in the ACPI_OBJECT. This change fixes the
251 support to allow references (namespace nodes) to be passed as arguments
252 to control methods via the evaluate object interface. This is probably
253 most useful for testing purposes, however.
255 Improved support for 32/64 bit physical addresses in printf()-like
256 output. This change improves the support for physical addresses in printf
257 debug statements and other output on both 32-bit and 64-bit hosts. It
258 consistently outputs the appropriate number of bytes for each host. The
259 %p specifier is unsatisfactory since it does not emit uniform output on
260 all hosts/clib implementations (on some, leading zeros are not supported,
261 leading to difficult-to-read output).
263 Example Code and Data Size: These are the sizes for the OS-independent
264 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
265 debug version of the code includes the debug output trace mechanism and
266 has a much larger code and data size.
269 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
270 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
272 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
273 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
276 2) iASL Compiler/Disassembler and Tools:
278 iASL: Fix a possible fault when using the Connection() operator. Fixes a
279 problem if the parent Field definition for the Connection operator refers
280 to an operation region that does not exist. ACPICA BZ 1064.
282 AcpiExec: Load of local test tables is now optional. The utility has the
283 capability to load some various tables to test features of ACPICA.
284 However, there are enough of them that the output of the utility became
285 confusing. With this change, only the required local tables are displayed
286 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
287 line specification. This makes the default output simler and easier to
288 understand. The -el command line option restores the original behavior
289 for testing purposes.
291 AcpiExec: Added support for overlapping operation regions. This change
292 expands the simulation of operation regions by supporting regions that
293 overlap within the given address space. Supports SystemMemory and
294 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
296 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
297 allows AcpiExec to simulate these address spaces, similar to the current
298 support for SystemMemory and SystemIO.
300 Debugger: Added new command to read/write/compare all namespace objects.
301 The command "test objects" will exercise the entire namespace by writing
302 new values to each data object, and ensuring that the write was
303 successful. The original value is then restored and verified.
305 Debugger: Added the "test predefined" command. This change makes this
306 test public and puts it under the new "test" command. The test executes
307 each and every predefined name within the current namespace.
309 ----------------------------------------
310 18 December 2013. Summary of changes for version 20131218:
312 Global note: The ACPI 5.0A specification was released this month. There
313 are no changes needed for ACPICA since this release of ACPI is an
314 errata/clarification release. The specification is available at
318 1) ACPICA kernel-resident subsystem:
320 Added validation of the XSDT root table if it is present. Some older
321 platforms contain an XSDT that is ill-formed or otherwise invalid (such
322 as containing some or all entries that are NULL pointers). This change
323 adds a new function to validate the XSDT before actually using it. If the
324 XSDT is found to be invalid, ACPICA will now automatically fall back to
325 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
326 ACPICA and enhanced by Lv Zheng and Bob Moore.
328 Added a runtime option to ignore the XSDT and force the use of the RSDT.
329 This change adds a runtime option that will force ACPICA to use the RSDT
330 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
331 requires that an XSDT be used instead of the RSDT, the XSDT has been
332 found to be corrupt or ill-formed on some machines. Lv Zheng.
334 Added a runtime option to favor 32-bit FADT register addresses over the
335 64-bit addresses. This change adds an option to favor 32-bit FADT
336 addresses when there is a conflict between the 32-bit and 64-bit versions
337 of the same register. The default behavior is to use the 64-bit version
338 in accordance with the ACPI specification. This can now be overridden via
339 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
341 During the change above, the internal "Convert FADT" and "Verify FADT"
342 functions have been merged to simplify the code, making it easier to
343 understand and maintain. ACPICA BZ 933.
345 Improve exception reporting and handling for GPE block installation.
346 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
347 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
349 Added helper macros to extract bus/segment numbers from the HEST table.
350 This change adds two macros to extract the encoded bus and segment
351 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
352 Betty Dall <betty.dall@hp.com>
354 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
355 by ACPICA. It is not a public macro, so it should have no effect on
356 existing OSV code. Lv Zheng.
358 Example Code and Data Size: These are the sizes for the OS-independent
359 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
360 debug version of the code includes the debug output trace mechanism and
361 has a much larger code and data size.
364 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
365 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
367 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
368 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
371 2) iASL Compiler/Disassembler and Tools:
373 Disassembler: Improved pathname support for emitted External()
374 statements. This change adds full pathname support for external names
375 that have been resolved internally by the inclusion of additional ACPI
376 tables (via the iASL -e option). Without this change, the disassembler
377 can emit multiple externals for the same object, or it become confused
378 when the Scope() operator is used on an external object. Overall, greatly
379 improves the ability to actually recompile the emitted ASL code when
380 objects a referenced across multiple ACPI tables. Reported by Michael
381 Tsirkin (mst@redhat.com).
383 Tests/ASLTS: Updated functional control suite to execute with no errors.
384 David Box. Fixed several errors related to the testing of the interpreter
385 slack mode. Lv Zheng.
387 iASL: Added support to detect names that are declared within a control
388 method, but are unused (these are temporary names that are only valid
389 during the time the method is executing). A remark is issued for these
390 cases. ACPICA BZ 1022.
392 iASL: Added full support for the DBG2 table. Adds full disassembler,
393 table compiler, and template generator support for the DBG2 table (Debug
396 iASL: Added full support for the PCCT table, update the table definition.
397 Updates the PCCT table definition in the actbl3.h header and adds table
398 compiler and template generator support.
400 iASL: Added an option to emit only error messages (no warnings/remarks).
401 The -ve option will enable only error messages, warnings and remarks are
402 suppressed. This can simplify debugging when only the errors are
403 important, such as when an ACPI table is disassembled and there are many
404 warnings and remarks -- but only the actual errors are of real interest.
406 Example ACPICA code (source/tools/examples): Updated the example code so
407 that it builds to an actual working program, not just example code. Added
408 ACPI tables and execution of an example control method in the DSDT. Added
409 makefile support for Unix generation.
411 ----------------------------------------
412 15 November 2013. Summary of changes for version 20131115:
414 This release is available at https://acpica.org/downloads
417 1) ACPICA kernel-resident subsystem:
419 Resource Manager: Fixed loop termination for the "get AML length"
420 function. The loop previously had an error termination on a NULL resource
421 pointer, which can never happen since the loop simply increments a valid
422 resource pointer. This fix changes the loop to terminate with an error on
423 an invalid end-of-buffer condition. The problem can be seen as an
424 infinite loop by callers to AcpiSetCurrentResources with an invalid or
425 corrupted resource descriptor, or a resource descriptor that is missing
426 an END_TAG descriptor. Reported by Dan Carpenter
427 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
429 Table unload and ACPICA termination: Delete all attached data objects
430 during namespace node deletion. This fix updates namespace node deletion
431 to delete the entire list of attached objects (attached via
432 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
433 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
435 ACPICA termination: Added support to delete all objects attached to the
436 root namespace node. This fix deletes any and all objects that have been
437 attached to the root node via AcpiAttachData. Previously, none of these
438 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
440 Debug output: Do not emit the function nesting level for the in-kernel
441 build. The nesting level is really only useful during a single-thread
442 execution. Therefore, only enable this output for the AcpiExec utility.
443 Also, only emit the thread ID when executing under AcpiExec (Context
444 switches are still always detected and a message is emitted). ACPICA BZ
447 Example Code and Data Size: These are the sizes for the OS-independent
448 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
449 debug version of the code includes the debug output trace mechanism and
450 has a much larger code and data size.
453 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
454 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
456 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
457 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
460 2) iASL Compiler/Disassembler and Tools:
462 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
463 correct portable POSIX header for terminal control functions.
465 Disassembler: Fixed control method invocation issues related to the use
466 of the CondRefOf() operator. The problem is seen in the disassembly where
467 control method invocations may not be disassembled properly if the
468 control method name has been used previously as an argument to CondRefOf.
469 The solution is to not attempt to emit an external declaration for the
470 CondRefOf target (it is not necessary in the first place). This prevents
471 disassembler object type confusion. ACPICA BZ 988.
473 Unix Makefiles: Added an option to disable compiler optimizations and the
474 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
475 with optimizations (reportedly, gcc 4.4 for example). This change adds a
476 command line option for make (NOOPT) that disables all compiler
477 optimizations and the _FORTIFY_SOURCE compiler flag. The default
478 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
479 1034. Lv Zheng, Bob Moore.
481 Tests/ASLTS: Added options to specify individual test cases and modes.
482 This allows testers running aslts.sh to optionally specify individual
483 test modes and test cases. Also added an option to disable the forced
484 generation of the ACPICA tools from source if desired. Lv Zheng.
486 ----------------------------------------
487 27 September 2013. Summary of changes for version 20130927:
489 This release is available at https://acpica.org/downloads
492 1) ACPICA kernel-resident subsystem:
494 Fixed a problem with store operations to reference objects. This change
495 fixes a problem where a Store operation to an ArgX object that contained
497 reference to a field object did not complete the automatic dereference
499 then write to the actual field object. Instead, the object type of the
500 field object was inadvertently changed to match the type of the source
501 operand. The new behavior will actually write to the field object (buffer
502 field or field unit), thus matching the correct ACPI-defined behavior.
504 Implemented support to allow the host to redefine individual OSL
505 prototypes. This change enables the host to redefine OSL prototypes found
506 in the acpiosxf.h file. This allows the host to implement OSL interfaces
507 with a macro or inlined function. Further, it allows the host to add any
508 additional required modifiers such as __iomem, __init, __exit, etc., as
509 necessary on a per-interface basis. Enables maximum flexibility for the
510 OSL interfaces. Lv Zheng.
512 Hardcoded the access width for the FADT-defined reset register. The ACPI
513 specification requires the reset register width to be 8 bits. ACPICA now
514 hardcodes the width to 8 and ignores the FADT width value. This provides
515 compatibility with other ACPI implementations that have allowed BIOS code
516 with bad register width values to go unnoticed. Matthew Garett, Bob
520 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
522 in the OSL header (acpiosxf). The change modifies the position of this
523 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
524 build issues if the OSL defines the implementation of the interface to be
525 an inline stub function. Lv Zheng.
527 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
528 initialization interfaces. This change adds a new macro for the main init
529 and terminate external interfaces in order to support hosts that require
530 additional or different processing for these functions. Changed from
531 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
534 Cleaned up the memory allocation macros for configurability. In the
536 case, the ACPI_ALLOCATE and related macros now resolve directly to their
537 respective AcpiOs* OSL interfaces. Two options:
538 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
539 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
540 2) For AcpiExec (and for debugging), the macros can optionally be
542 to the local ACPICA interfaces that track each allocation (local tracking
543 is used to immediately detect memory leaks).
546 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
547 to predefine this macro to either TRUE or FALSE during the system build.
549 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
551 Example Code and Data Size: These are the sizes for the OS-independent
552 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
553 debug version of the code includes the debug output trace mechanism and
554 has a much larger code and data size.
557 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
558 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
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
564 2) iASL Compiler/Disassembler and Tools:
566 iASL: Implemented wildcard support for the -e option. This simplifies use
567 when there are many SSDTs that must be included to resolve external
569 declarations. ACPICA BZ 1041. Example:
570 iasl -e ssdt*.dat -d dsdt.dat
572 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
573 adds a portable module that implements full history and limited line
574 editing for Unix and Linux systems. It does not use readline() due to
575 portability issues. Instead it uses the POSIX termio interface to put the
576 terminal in raw input mode so that the various special keys can be
578 (such as up/down-arrow for history support and left/right-arrow for line
579 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
581 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
582 one or more spaces. This provides compatible with early or different
583 versions of the AcpiDump utility. ACPICA BZ 1044.
585 AcpiDump: Do not ignore tables that contain only an ACPI table header.
586 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
587 no other data. This change adds support to dump these tables. Any tables
588 shorter than the length of an ACPI table header remain in error (an error
589 message is emitted). Reported by Yi Li.
591 Debugger: Echo actual command along with the "unknown command" message.
593 ----------------------------------------
594 23 August 2013. Summary of changes for version 20130823:
596 1) ACPICA kernel-resident subsystem:
598 Implemented support for host-installed System Control Interrupt (SCI)
599 handlers. Certain ACPI functionality requires the host to handle raw
600 SCIs. For example, the "SCI Doorbell" that is defined for memory power
601 state support requires the host device driver to handle SCIs to examine
602 if the doorbell has been activated. Multiple SCI handlers can be
603 installed to allow for future expansion. New external interfaces are
604 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
605 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
607 Operation region support: Never locally free the handler "context"
608 pointer. This change removes some dangerous code that attempts to free
609 the handler context pointer in some (rare) circumstances. The owner of
610 the handler owns this pointer and the ACPICA code should never touch it.
611 Although not seen to be an issue in any kernel, it did show up as a
612 problem (fault) under AcpiExec. Also, set the internal storage field for
613 the context pointer to zero when the region is deactivated, simply for
614 sanity. David Box. ACPICA BZ 1039.
616 AcpiRead: On error, do not modify the return value target location. If an
617 error happens in the middle of a split 32/32 64-bit I/O operation, do not
618 modify the target of the return value pointer. Makes the code consistent
619 with the rest of ACPICA. Bjorn Helgaas.
621 Example Code and Data Size: These are the sizes for the OS-independent
622 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
623 debug version of the code includes the debug output trace mechanism and
624 has a much larger code and data size.
627 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
628 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
630 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
631 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
634 2) iASL Compiler/Disassembler and Tools:
636 AcpiDump: Implemented several new features and fixed some problems:
637 1) Added support to dump the RSDP, RSDT, and XSDT tables.
638 2) Added support for multiple table instances (SSDT, UEFI).
639 3) Added option to dump "customized" (overridden) tables (-c).
640 4) Fixed a problem where some table filenames were improperly
642 5) Improved some error messages, removed some unnecessary messages.
644 iASL: Implemented additional support for disassembly of ACPI tables that
645 contain invocations of external control methods. The -fe<file> option
646 allows the import of a file that specifies the external methods along
647 with the required number of arguments for each -- allowing for the
648 correct disassembly of the table. This is a workaround for a limitation
649 of AML code where the disassembler often cannot determine the number of
650 arguments required for an external control method and generates incorrect
651 ASL code. See the iASL reference for details. ACPICA BZ 1030.
653 Debugger: Implemented a new command (paths) that displays the full
654 pathnames (namepaths) and object types of all objects in the namespace.
655 This is an alternative to the namespace command.
657 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
658 mechanism and any installed handlers.
660 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
661 This can occur if there are too many parent prefixes in a namepath (for
662 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
664 Application OSLs: Set the return value for the PCI read functions. These
665 functions simply return AE_OK, but should set the return value to zero
666 also. This change implements this. ACPICA BZ 1038.
668 Debugger: Prevent possible command line buffer overflow. Increase the
669 size of a couple of the debugger line buffers, and ensure that overflow
670 cannot happen. ACPICA BZ 1037.
672 iASL: Changed to abort immediately on serious errors during the parsing
673 phase. Due to the nature of ASL, there is no point in attempting to
674 compile these types of errors, and they typically end up causing a
675 cascade of hundreds of errors which obscure the original problem.
677 ----------------------------------------
678 25 July 2013. Summary of changes for version 20130725:
680 1) ACPICA kernel-resident subsystem:
682 Fixed a problem with the DerefOf operator where references to FieldUnits
683 and BufferFields incorrectly returned the parent object, not the actual
684 value of the object. After this change, a dereference of a FieldUnit
685 reference results in a read operation on the field to get the value, and
686 likewise, the appropriate BufferField value is extracted from the target
689 Fixed a problem where the _WAK method could cause a fault under these
690 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
691 method returned no value. The problem is rarely seen because most kernels
692 run ACPICA in slack mode.
694 For the DerefOf operator, a fatal error now results if an attempt is made
695 to dereference a reference (created by the Index operator) to a NULL
696 package element. Provides compatibility with other ACPI implementations,
697 and this behavior will be added to a future version of the ACPI
700 The ACPI Power Management Timer (defined in the FADT) is now optional.
701 This provides compatibility with other ACPI implementations and will
702 appear in the next version of the ACPI specification. If there is no PM
703 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
704 zero in the FADT indicates no PM timer.
706 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
707 allows the host to globally enable/disable all vendor strings, all
708 feature strings, or both. Intended to be primarily used for debugging
709 purposes only. Lv Zheng.
711 Expose the collected _OSI data to the host via a global variable. This
712 data tracks the highest level vendor ID that has been invoked by the BIOS
713 so that the host (and potentially ACPICA itself) can change behaviors
714 based upon the age of the BIOS.
716 Example Code and Data Size: These are the sizes for the OS-independent
717 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
718 debug version of the code includes the debug output trace mechanism and
719 has a much larger code and data size.
722 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
723 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
725 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
726 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
729 2) iASL Compiler/Disassembler and Tools:
731 iASL: Created the following enhancements for the -so option (create
733 1)Add offsets for the last nameseg in each namepath for every supported
735 2)Add support for Processor, Device, Thermal Zone, and Scope objects
736 3)Add the actual AML opcode for the parent object of every supported
738 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
740 Disassembler: Emit all unresolved external symbols in a single block.
741 These are external references to control methods that could not be
742 resolved, and thus, the disassembler had to make a guess at the number of
745 iASL: The argument to the -T option (create table template) is now
746 optional. If not specified, the default table is a DSDT, typically the
749 ----------------------------------------
750 26 June 2013. Summary of changes for version 20130626:
752 1) ACPICA kernel-resident subsystem:
754 Fixed an issue with runtime repair of the _CST object. Null or invalid
755 elements were not always removed properly. Lv Zheng.
757 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
758 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
759 the maximum number of GPEs is 1016. Use of multiple GPE block devices
760 makes the system-wide number of GPEs essentially unlimited.
762 Example Code and Data Size: These are the sizes for the OS-independent
763 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
764 debug version of the code includes the debug output trace mechanism and
765 has a much larger code and data size.
768 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
769 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
771 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
772 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
775 2) iASL Compiler/Disassembler and Tools:
777 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
778 hosts. Now supports Linux, FreeBSD, and Windows.
780 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
781 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
783 iASL/Preprocessor: Implemented full support for nested
784 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
786 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
787 max. The original purpose of this constraint was to limit the amount of
788 debug output. However, the string function in question (UtPrintString) is
789 now used for the disassembler also, where 256 bytes is insufficient.
790 Reported by RehabMan@GitHub.
792 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
793 tables. ACPICA BZ 999. Lv Zheng.
795 iASL: Fixed a couple of error exit issues that could result in a "Could
796 not delete <file>" message during ASL compilation.
798 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
799 the actual signatures for these tables are "FACP" and "APIC",
802 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
803 tables are allowed to have multiple instances.
805 ----------------------------------------
806 17 May 2013. Summary of changes for version 20130517:
808 1) ACPICA kernel-resident subsystem:
810 Fixed a regression introduced in version 20130328 for _INI methods. This
811 change fixes a problem introduced in 20130328 where _INI methods are no
812 longer executed properly because of a memory block that was not
813 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
814 <tomasz.nowicki@linaro.org>.
816 Fixed a possible problem with the new extended sleep registers in the
818 5.0 FADT. Do not use these registers (even if populated) unless the HW-
819 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
822 Implemented return value repair code for _CST predefined objects: Sort
824 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
826 Implemented a debug-only option to disable loading of SSDTs from the
827 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
828 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
829 acglobal.h - ACPICA BZ 1005. Lv Zheng.
831 Fixed some issues in the ACPICA initialization and termination code:
832 Tomasz Nowicki <tomasz.nowicki@linaro.org>
833 1) Clear events initialized flag upon event component termination. ACPICA
835 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
836 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
837 4) Clear debug buffer global on termination to prevent possible multiple
838 delete. ACPICA BZ 1010.
840 Standardized all switch() blocks across the entire source base. After
842 years, different formatting for switch() had crept in. This change makes
843 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
845 Split some files to enhance ACPICA modularity and configurability:
846 1) Split buffer dump routines into utilities/utbuffer.c
847 2) Split internal error message routines into utilities/uterror.c
848 3) Split table print utilities into tables/tbprint.c
849 4) Split iASL command-line option processing into asloptions.c
851 Makefile enhancements:
852 1) Support for all new files above.
853 2) Abort make on errors from any subcomponent. Chao Guan.
854 3) Add build support for Apple Mac OS X. Liang Qi.
856 Example Code and Data Size: These are the sizes for the OS-independent
857 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
858 debug version of the code includes the debug output trace mechanism and
859 has a much larger code and data size.
862 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
863 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
865 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
866 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
869 2) iASL Compiler/Disassembler and Tools:
871 New utility: Implemented an easily portable version of the acpidump
872 utility to extract ACPI tables from the system (or a file) in an ASCII
874 dump format. The top-level code implements the various command line
875 options, file I/O, and table dump routines. To port to a new host, only
876 three functions need to be implemented to get tables -- since this
877 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
878 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
879 1) The Windows version obtains the ACPI tables from the Registry.
880 2) The Linux version is under development.
881 3) Other hosts - If an OS-dependent module is submitted, it will be
882 distributed with ACPICA.
884 iASL: Fixed a regression for -D preprocessor option (define symbol). A
885 restructuring/change to the initialization sequence caused this option to
886 no longer work properly.
888 iASL: Implemented a mechanism to disable specific warnings and remarks.
889 Adds a new command line option, "-vw <messageid> as well as "#pragma
890 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
892 iASL: Fix for too-strict package object validation. The package object
893 validation for return values from the predefined names is a bit too
894 strict, it does not allow names references within the package (which will
895 be resolved at runtime.) These types of references cannot be validated at
896 compile time. This change ignores named references within package objects
897 for names that return or define static packages.
899 Debugger: Fixed the 80-character command line limitation for the History
900 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
902 iASL: Added control method and package support for the -so option
903 (generates AML offset table for BIOS support.)
905 iASL: issue a remark if a non-serialized method creates named objects. If
906 a thread blocks within the method for any reason, and another thread
907 enters the method, the method will fail because an attempt will be made
909 create the same (named) object twice. In this case, issue a remark that
910 the method should be marked serialized. NOTE: may become a warning later.
913 ----------------------------------------
914 18 April 2013. Summary of changes for version 20130418:
916 1) ACPICA kernel-resident subsystem:
918 Fixed a possible buffer overrun during some rare but specific field unit
919 read operations. This overrun can only happen if the DSDT version is 1 --
920 meaning that all AML integers are 32 bits -- and the field length is
921 between 33 and 55 bits long. During the read, an internal buffer object
923 created for the field unit because the field is larger than an integer
925 bits). However, in this case, the buffer will be incorrectly written
926 beyond the end because the buffer length is less than the internal
928 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
929 long, but a full 8 bytes will be written.
931 Updated the Embedded Controller "orphan" _REG method support. This refers
932 to _REG methods under the EC device that have no corresponding operation
933 region. This is allowed by the ACPI specification. This update removes a
934 dependency on the existence an ECDT table. It will execute an orphan _REG
935 method as long as the operation region handler for the EC is installed at
936 the EC device node and not the namespace root. Rui Zhang (original
937 update), Bob Moore (update/integrate).
939 Implemented run-time argument typechecking for all predefined ACPI names
940 (_STA, _BIF, etc.) This change performs object typechecking on all
941 incoming arguments for all predefined names executed via
942 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
943 passing correct object types as well as the correct number of arguments
944 (therefore identifying any issues immediately). Also, the ASL/namespace
945 definition of the predefined name is checked against the ACPI
946 specification for the proper argument count. Adds one new file,
949 Changed an exception code for the ASL UnLoad() operator. Changed the
950 exception code for the case where the input DdbHandle is invalid, from
951 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
953 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
954 global makefile. The use of this flag causes compiler errors on earlier
955 versions of GCC, so it has been removed for compatibility.
957 Miscellaneous cleanup:
958 1) Removed some unused/obsolete macros
959 2) Fixed a possible memory leak in the _OSI support
960 3) Removed an unused variable in the predefined name support
961 4) Windows OSL: remove obsolete reference to a memory list field
963 Example Code and Data Size: These are the sizes for the OS-independent
964 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
965 debug version of the code includes the debug output trace mechanism and
966 has a much larger code and data size.
969 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
970 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
972 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
973 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
976 2) iASL Compiler/Disassembler and Tools:
978 AcpiExec: Added installation of a handler for the SystemCMOS address
979 space. This prevents control method abort if a method accesses this
982 AcpiExec: Added support for multiple EC devices, and now install EC
983 operation region handler(s) at the actual EC device instead of the
984 namespace root. This reflects the typical behavior of host operating
987 AcpiExec: Updated to ensure that all operation region handlers are
988 installed before the _REG methods are executed. This prevents a _REG
989 method from aborting if it accesses an address space has no handler.
990 AcpiExec installs a handler for every possible address space.
992 Debugger: Enhanced the "handlers" command to display non-root handlers.
993 This change enhances the handlers command to display handlers associated
994 with individual devices throughout the namespace, in addition to the
995 currently supported display of handlers associated with the root
999 ASL Test Suite: Several test suite errors have been identified and
1000 resolved, reducing the total error count during execution. Chao Guan.
1002 ----------------------------------------
1003 28 March 2013. Summary of changes for version 20130328:
1005 1) ACPICA kernel-resident subsystem:
1007 Fixed several possible race conditions with the internal object reference
1008 counting mechanism. Some of the external ACPICA interfaces update object
1009 reference counts without holding the interpreter or namespace lock. This
1010 change adds a spinlock to protect reference count updates on the internal
1011 ACPICA objects. Reported by and with assistance from Andriy Gapon
1014 FADT support: Removed an extraneous warning for very large GPE register
1015 sets. This change removes a size mismatch warning if the legacy length
1016 field for a GPE register set is larger than the 64-bit GAS structure can
1017 accommodate. GPE register sets can be larger than the 255-bit width
1018 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1020 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1021 return from this interface. Handles a possible timeout case if
1022 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1023 "forever". Jung-uk Kim.
1025 Predefined name support: Add allowed/required argument type information
1027 the master predefined info table. This change adds the infrastructure to
1028 enable typechecking on incoming arguments for all predefined
1029 methods/objects. It does not actually contain the code that will fully
1030 utilize this information, this is still under development. Also condenses
1031 some duplicate code for the predefined names into a new module,
1032 utilities/utpredef.c
1034 Example Code and Data Size: These are the sizes for the OS-independent
1035 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1036 debug version of the code includes the debug output trace mechanism and
1037 has a much larger code and data size.
1040 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1041 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1043 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1044 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1047 2) iASL Compiler/Disassembler and Tools:
1049 iASL: Implemented a new option to simplify the development of ACPI-
1051 BIOS code. Adds support for a new "offset table" output file. The -so
1052 option will create a C table containing the AML table offsets of various
1053 named objects in the namespace so that BIOS code can modify them easily
1055 boot time. This can simplify BIOS runtime code by eliminating expensive
1056 searches for "magic values", enhancing boot times and adding greater
1057 reliability. With assistance from Lee Hamel.
1059 iASL: Allow additional predefined names to return zero-length packages.
1060 Now, all predefined names that are defined by the ACPI specification to
1061 return a "variable-length package of packages" are allowed to return a
1062 zero length top-level package. This allows the BIOS to tell the host that
1063 the requested feature is not supported, and supports existing BIOS/ASL
1066 iASL: Changed the "result not used" warning to an error. This is the case
1067 where an ASL operator is effectively a NOOP because the result of the
1068 operation is not stored anywhere. For example:
1070 There is no target (missing 3rd argument), nor is the function return
1071 value used. This is potentially a very serious problem -- since the code
1072 was probably intended to do something, but for whatever reason, the value
1073 was not stored. Therefore, this issue has been upgraded from a warning to
1076 AcpiHelp: Added allowable/required argument types to the predefined names
1077 info display. This feature utilizes the recent update to the predefined
1078 names table (above).
1080 ----------------------------------------
1081 14 February 2013. Summary of changes for version 20130214:
1083 1) ACPICA Kernel-resident Subsystem:
1085 Fixed a possible regression on some hosts: Reinstated the safe return
1086 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1087 evaluated only once. Although these macros are not needed for the ACPICA
1088 code itself, they are often used by ACPI-related host device drivers
1090 the safe feature may be necessary.
1092 Fixed several issues related to the ACPI 5.0 reduced hardware support
1093 (SOC): Now ensure that if the platform declares itself as hardware-
1095 via the FADT, the following functions become NOOPs (and always return
1096 AE_OK) because ACPI is always enabled by definition on these machines:
1102 Dynamic Object Repair: Implemented additional runtime repairs for
1103 predefined name return values. Both of these repairs can simplify code in
1104 the related device drivers that invoke these methods:
1105 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1106 string to a Unicode buffer.
1107 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1109 lone end tag descriptor in the following cases: A Return(0) was executed,
1110 a null buffer was returned, or no object at all was returned (non-slack
1111 mode only). Adds a new file, nsconvert.c
1112 ACPICA BZ 998. Bob Moore, Lv Zheng.
1114 Resource Manager: Added additional code to prevent possible infinite
1116 while traversing corrupted or ill-formed resource template buffers. Check
1117 for zero-length resource descriptors in all code that loops through
1118 resource templates (the length field is used to index through the
1119 template). This change also hardens the external AcpiWalkResources and
1120 AcpiWalkResourceBuffer interfaces.
1122 Local Cache Manager: Enhanced the main data structure to eliminate an
1123 unnecessary mechanism to access the next object in the list. Actually
1124 provides a small performance enhancement for hosts that use the local
1125 ACPICA cache manager. Jung-uk Kim.
1127 Example Code and Data Size: These are the sizes for the OS-independent
1128 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1129 debug version of the code includes the debug output trace mechanism and
1130 has a much larger code and data size.
1133 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1134 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1136 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1137 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1140 2) iASL Compiler/Disassembler and Tools:
1142 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1143 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1144 that were made to the ACPI 5.0 specification.
1146 iASL/Disassembler: Added full support for the following new ACPI tables:
1147 1) The MTMR table (MID Timer Table)
1148 2) The VRTC table (Virtual Real Time Clock Table).
1149 Includes header file, disassembler, table compiler, and template support
1152 iASL: Implemented compile-time validation of package objects returned by
1153 predefined names. This new feature validates static package objects
1154 returned by the various predefined names defined to return packages. Both
1155 object types and package lengths are validated, for both parent packages
1156 and sub-packages, if any. The code is similar in structure and behavior
1158 the runtime repair mechanism within the AML interpreter and uses the
1159 existing predefined name information table. Adds a new file, aslprepkg.c.
1162 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1163 This feature detects a binary file with a valid ACPI table header and
1164 invokes the disassembler automatically. Eliminates the need to
1165 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1167 iASL/Disassembler: Added several warnings for the case where there are
1168 unresolved control methods during the disassembly. This can potentially
1169 cause errors when the output file is compiled, because the disassembler
1170 assumes zero method arguments in these cases (it cannot determine the
1171 actual number of arguments without resolution/definition of the method).
1173 Debugger: Added support to display all resources with a single command.
1174 Invocation of the resources command with no arguments will now display
1176 resources within the current namespace.
1178 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1181 ----------------------------------------
1182 17 January 2013. Summary of changes for version 20130117:
1184 1) ACPICA Kernel-resident Subsystem:
1186 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1187 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1188 objects to return a package containing one integer, most BIOS code
1190 two integers and the previous code reflects that. However, we also need
1192 support BIOS code that actually implements to the ACPI spec, and this
1193 change reflects this.
1195 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1196 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1197 C compilers that require this support.
1198 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1199 ACPI_DEBUG is already used by many of the various hosts.
1201 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1202 copyright to all module headers and signons, including the standard Linux
1203 header. This affects virtually every file in the ACPICA core subsystem,
1204 iASL compiler, all ACPICA utilities, and the test suites.
1206 Example Code and Data Size: These are the sizes for the OS-independent
1207 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1208 debug version of the code includes the debug output trace mechanism and
1209 has a much larger code and data size.
1212 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1213 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1215 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1216 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1219 2) iASL Compiler/Disassembler and Tools:
1221 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1222 prevent a possible fault on some hosts. Some C libraries modify the arg
1223 pointer parameter to vfprintf making it difficult to call it twice in the
1224 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1225 does not affect the Windows OSL since the Win C library does not modify
1226 the arg pointer. Chao Guan, Bob Moore.
1228 iASL: Fixed a possible infinite loop when the maximum error count is
1229 reached. If an output file other than the .AML file is specified (such as
1230 a listing file), and the maximum number of errors is reached, do not
1231 attempt to flush data to the output file(s) as the compiler is aborting.
1232 This can cause an infinite loop as the max error count code essentially
1233 keeps calling itself.
1235 iASL/Disassembler: Added an option (-in) to ignore NOOP
1237 Implemented for both the compiler and the disassembler. Often, the NOOP
1238 opcode is used as padding for packages that are changed dynamically by
1240 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1241 errors. This option causes the disassembler to ignore all NOOP opcodes
1242 (0xA3), and it also causes the compiler to ignore all ASL source code
1246 Debugger: Enhanced the Sleep command to execute all sleep states. This
1247 change allows Sleep to be invoked with no arguments and causes the
1248 debugger to execute all of the sleep states, 0-5, automatically.
1250 ----------------------------------------
1251 20 December 2012. Summary of changes for version 20121220:
1253 1) ACPICA Kernel-resident Subsystem:
1255 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1256 alternate entry point for AcpiWalkResources and improves the usability of
1257 the resource manager by accepting as input a buffer containing the output
1258 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1259 input buffer is not deleted by this interface so that it can be used by
1260 the host later. See the ACPICA reference for details.
1262 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1263 (DSDT version < 2). The constant will be truncated and this warning
1264 reflects that behavior.
1266 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1267 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1268 both get and set the new wake bit in these descriptors, separately from
1269 the existing share bit. Reported by Aaron Lu.
1271 Interpreter: Fix Store() when an implicit conversion is not possible. For
1272 example, in the cases such as a store of a string to an existing package
1273 object, implement the store as a CopyObject(). This is a small departure
1274 from the ACPI specification which states that the control method should
1276 aborted in this case. However, the ASLTS suite depends on this behavior.
1278 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1279 macros: check if debug output is currently enabled as soon as possible to
1280 minimize performance impact if debug is in fact not enabled.
1282 Source code restructuring: Cleanup to improve modularity. The following
1283 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1284 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1285 Associated makefiles and project files have been updated.
1287 Changed an exception code for LoadTable operator. For the case where one
1288 of the input strings is too long, change the returned exception code from
1289 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1291 Fixed a possible memory leak in dispatcher error path. On error, delete
1292 the mutex object created during method mutex creation. Reported by
1293 tim.gardner@canonical.com.
1295 Example Code and Data Size: These are the sizes for the OS-independent
1296 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1297 debug version of the code includes the debug output trace mechanism and
1298 has a much larger code and data size.
1301 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1302 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1304 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1305 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1308 2) iASL Compiler/Disassembler and Tools:
1310 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1311 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1312 will not allow the interpreter to differentiate between a method and a
1313 method invocation when these are used as an argument to the ObjectType
1314 operator. The ACPI specification change is to disallow a method
1316 (UserTerm) for the ObjectType operator.
1318 Finish support for the TPM2 and CSRT tables in the headers, table
1319 compiler, and disassembler.
1321 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1322 always expires immediately if the semaphore is not available. The
1324 code was using a relative-time timeout, but sem_timedwait requires the
1326 of an absolute time.
1328 iASL: Added a remark if the Timer() operator is used within a 32-bit
1329 table. This operator returns a 64-bit time value that will be truncated
1330 within a 32-bit table.
1332 iASL Source code restructuring: Cleanup to improve modularity. The
1333 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1334 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1338 ----------------------------------------
1339 14 November 2012. Summary of changes for version 20121114:
1341 1) ACPICA Kernel-resident Subsystem:
1343 Implemented a performance enhancement for ACPI/AML Package objects. This
1344 change greatly increases the performance of Package objects within the
1345 interpreter. It changes the processing of reference counts for packages
1347 optimizing for the most common case where the package sub-objects are
1348 either Integers, Strings, or Buffers. Increases the overall performance
1350 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1352 Chao Guan. ACPICA BZ 943.
1354 Implemented and deployed common macros to extract flag bits from resource
1355 descriptors. Improves readability and maintainability of the code. Fixes
1357 problem with the UART serial bus descriptor for the number of data bits
1358 flags (was incorrectly 2 bits, should be 3).
1360 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1361 of the macros and changed the SETx macros to the style of (destination,
1362 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1364 Example Code and Data Size: These are the sizes for the OS-independent
1365 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1366 debug version of the code includes the debug output trace mechanism and
1367 has a much larger code and data size.
1370 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1371 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1373 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1374 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1377 2) iASL Compiler/Disassembler and Tools:
1379 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1380 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1381 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1383 Disassembler: Fixed a problem with external declaration generation. Fixes
1384 a problem where an incorrect pathname could be generated for an external
1385 declaration if the original reference to the object includes leading
1386 carats (^). ACPICA BZ 984.
1388 Debugger: Completed a major update for the Disassemble<method> command.
1389 This command was out-of-date and did not properly disassemble control
1390 methods that had any reasonable complexity. This fix brings the command
1392 to the same level as the rest of the disassembler. Adds one new file,
1393 dmdeferred.c, which is existing code that is now common with the main
1394 disassembler and the debugger disassemble command. ACPICA MZ 978.
1396 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1397 Newer versions of Bison emit this prototype, so moved the prototype out
1399 the iASL header to where it is actually used in order to avoid a
1403 iASL/Tools: Standardized use of the stream I/O functions:
1404 1) Ensure check for I/O error after every fopen/fread/fwrite
1405 2) Ensure proper order of size/count arguments for fread/fwrite
1406 3) Use test of (Actual != Requested) after all fwrite, and most fread
1407 4) Standardize I/O error messages
1408 Improves reliability and maintainability of the code. Bob Moore, Lv
1412 Disassembler: Prevent duplicate External() statements. During generation
1413 of external statements, detect similar pathnames that are actually
1414 duplicates such as these:
1417 Remove all leading '\' characters from pathnames during the external
1418 statement generation so that duplicates will be detected and tossed.
1421 Tools: Replace low-level I/O with stream I/O functions. Replace
1422 open/read/write/close with the stream I/O equivalents
1423 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1426 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1427 name header so that AcpiXtract recognizes the output file/table.
1429 iASL: Remove obsolete -2 option flag. Originally intended to force the
1430 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1431 and the entire concept is now obsolete.
1433 ----------------------------------------
1434 18 October 2012. Summary of changes for version 20121018:
1437 1) ACPICA Kernel-resident Subsystem:
1439 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1440 introduced by late changes to the table as it was added to the ACPI 5.0
1441 specification. Includes header, disassembler, and data table compiler
1442 support as well as a new version of the MPST template.
1444 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1445 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1446 methods: _HID, _CID, and _UID.
1448 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1449 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1450 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1451 names for their various drivers. Affects the AcpiGetObjectInfo external
1452 interface, and other internal interfaces as well.
1454 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1455 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
1456 on machines that support non-aligned transfers. Optimizes for this case
1457 rather than using a strncpy. With assistance from Zheng Lv.
1459 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
1460 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
1462 Added a new debug print message for AML mutex objects that are force-
1463 released. At control method termination, any currently acquired mutex
1464 objects are force-released. Adds a new debug-only message for each one
1467 Audited/updated all ACPICA return macros and the function debug depth
1468 counter: 1) Ensure that all functions that use the various TRACE macros
1469 also use the appropriate ACPICA return macros. 2) Ensure that all normal
1470 return statements surround the return expression (value) with parens to
1471 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
1472 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
1474 Global source code changes/maintenance: All extra lines at the start and
1475 end of each source file have been removed for consistency. Also, within
1476 comments, all new sentences start with a single space instead of a double
1477 space, again for consistency across the code base.
1479 Example Code and Data Size: These are the sizes for the OS-independent
1480 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1481 debug version of the code includes the debug output trace mechanism and
1482 has a much larger code and data size.
1485 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1486 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1488 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1489 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1492 2) iASL Compiler/Disassembler and Tools:
1494 AcpiExec: Improved the algorithm used for memory leak/corruption
1495 detection. Added some intelligence to the code that maintains the global
1496 list of allocated memory. The list is now ordered by allocated memory
1497 address, significantly improving performance. When running AcpiExec on
1498 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
1499 on the platform and/or the environment. Note, this performance
1500 enhancement affects the AcpiExec utility only, not the kernel-resident
1503 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
1504 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
1505 incorrect table offset reported for invalid opcodes. Report the original
1506 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
1508 Disassembler: Enhanced the -vt option to emit the binary table data in
1509 hex format to assist with debugging.
1511 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
1512 size of file structure. Colin Ian King.
1514 ----------------------------------------
1515 13 September 2012. Summary of changes for version 20120913:
1518 1) ACPICA Kernel-resident Subsystem:
1520 ACPI 5.0: Added two new notify types for the Hardware Error Notification
1521 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
1525 Table Manager: Merged/removed duplicate code in the root table resize
1526 functions. One function is external, the other is internal. Lv Zheng,
1530 Makefiles: Completely removed the obsolete "Linux" makefiles under
1531 acpica/generate/linux. These makefiles are obsolete and have been
1534 the generic unix makefiles under acpica/generate/unix.
1536 Makefiles: Ensure that binary files always copied properly. Minor rule
1538 to ensure that the final binary output files are always copied up to the
1539 appropriate binary directory (bin32 or bin64.)
1541 Example Code and Data Size: These are the sizes for the OS-independent
1542 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1544 version of the code includes the debug output trace mechanism and has a
1546 larger code and data size.
1549 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1550 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1552 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
1553 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
1556 2) iASL Compiler/Disassembler and Tools:
1558 Disassembler: Fixed a possible fault during the disassembly of resource
1559 descriptors when a second parse is required because of the invocation of
1560 external control methods within the table. With assistance from
1561 adq@lidskialf.net. ACPICA BZ 976.
1563 iASL: Fixed a namepath optimization problem. An error can occur if the
1565 node that contains the namepath to be optimized does not have a parent
1567 that is a named object. This change fixes the problem.
1569 iASL: Fixed a regression where the AML file is not deleted on errors. The
1571 output file should be deleted if there are any errors during the
1574 only exception is if the -f (force output) option is used. ACPICA BZ 974.
1576 iASL: Added a feature to automatically increase internal line buffer
1578 Via realloc(), automatically increase the internal line buffer sizes as
1579 necessary to support very long source code lines. The current version of
1581 preprocessor requires a buffer long enough to contain full source code
1583 This change increases the line buffer(s) if the input lines go beyond the
1584 current buffer size. This eliminates errors that occurred when a source
1586 line was longer than the buffer.
1588 iASL: Fixed a problem with constant folding in method declarations. The
1589 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
1591 Type3 opcode was used.
1593 Debugger: Improved command help support. For incorrect argument count,
1595 full help for the command. For help command itself, allow an argument to
1598 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
1599 errors during execution of the suite. Guan Chao.
1601 ----------------------------------------
1602 16 August 2012. Summary of changes for version 20120816:
1605 1) ACPICA Kernel-resident Subsystem:
1607 Removed all use of the deprecated _GTS and _BFS predefined methods. The
1609 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
1610 deprecated and will probably be removed from the ACPI specification.
1612 does not invoke them, and reportedly never will. The final nail in the
1614 is that the ACPI specification states that these methods must be run with
1615 interrupts off, which is not going to happen in a kernel interpreter.
1617 Linux has removed all use of the methods also. It was discovered that
1618 invoking these functions caused failures on some machines, probably
1620 they were never tested since Windows does not call them. Affects two
1622 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
1625 Implemented support for complex bit-packed buffers returned from the _PLD
1626 (Physical Location of Device) predefined method. Adds a new external
1627 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
1629 structure. Note: C Bitfields cannot be used for this type of predefined
1630 structure since the memory layout of individual bitfields is not defined
1632 the C language. In addition, there are endian concerns where a compiler
1634 change the bitfield ordering based on the machine type. The new ACPICA
1635 interface eliminates these issues, and should be called after _PLD is
1636 executed. ACPICA BZ 954.
1638 Implemented a change to allow a scope change to root (via "Scope (\)")
1640 execution of module-level ASL code (code that is executed at table load
1643 Added the Windows8/Server2012 string for the _OSI method. This change
1646 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
1649 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
1651 and CSRT (Core System Resource Table).
1653 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
1654 names. This simplifies access to the buffers returned by these predefined
1655 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
1657 GPE support: Removed an extraneous parameter from the various low-level
1658 internal GPE functions. Tang Feng.
1660 Removed the linux makefiles from the unix packages. The generate/linux
1661 makefiles are obsolete and have been removed from the unix tarball
1663 packages. The replacement makefiles are under generate/unix, and there is
1665 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
1667 Updates for Unix makefiles:
1668 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
1669 2) Update linker flags (move to end of command line) for AcpiExec
1673 Split ACPICA initialization functions to new file, utxfinit.c. Split from
1674 utxface.c to improve modularity and reduce file size.
1676 Example Code and Data Size: These are the sizes for the OS-independent
1677 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1678 debug version of the code includes the debug output trace mechanism and
1680 much larger code and data size.
1683 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1684 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1686 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
1687 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
1690 2) iASL Compiler/Disassembler and Tools:
1692 iASL: Fixed a problem with constant folding for fixed-length constant
1693 expressions. The constant-folding code was not being invoked for constant
1694 expressions that allow the use of type 3/4/5 opcodes to generate
1696 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
1698 in the generation of invalid AML bytecode. ACPICA BZ 970.
1700 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
1701 apparently automatically emit some of the necessary externals. This
1703 handles these versions in order to eliminate generation warnings.
1705 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
1707 Disassembler: Add support to decode _PLD buffers. The decoded buffer
1709 within comments in the output file.
1711 Debugger: Fixed a regression with the "Threads" command where
1712 AE_BAD_PARAMETER was always returned.
1714 ----------------------------------------
1715 11 July 2012. Summary of changes for version 20120711:
1717 1) ACPICA Kernel-resident Subsystem:
1719 Fixed a possible fault in the return package object repair code. Fixes a
1720 problem that can occur when a lone package object is wrapped with an
1722 package object in order to force conformance to the ACPI specification.
1724 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
1728 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
1729 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
1730 ARB_DIS bit must be implemented in the host-dependent C3 processor power
1732 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
1734 Intel and other vendors. (for Intel: ICH4-M and earlier)
1736 This change removes the code to disable/enable bus master arbitration
1738 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
1740 resume problems on some machines. The change has been in use for over
1744 Implemented two new external interfaces to support host-directed dynamic
1746 table load and unload. They are intended to simplify the host
1748 of hot-plug support:
1749 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
1750 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
1752 See the ACPICA reference for additional details. Adds one new file,
1753 components/tables/tbxfload.c
1755 Implemented and deployed two new interfaces for errors and warnings that
1757 known to be caused by BIOS/firmware issues:
1758 AcpiBiosError: Prints "ACPI Firmware Error" message.
1759 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
1760 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
1762 and FADT errors. Additional deployment to be completed as appropriate in
1764 future. The associated conditional macros are ACPI_BIOS_ERROR and
1765 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
1770 Implicit notify support: ensure that no memory allocation occurs within a
1771 critical region. This fix moves a memory allocation outside of the time
1773 spinlock is held. Fixes issues on systems that do not allow this
1777 Split exception code utilities and tables into a new file,
1780 Example Code and Data Size: These are the sizes for the OS-independent
1781 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1783 version of the code includes the debug output trace mechanism and has a
1785 larger code and data size.
1788 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1789 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1791 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
1792 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
1795 2) iASL Compiler/Disassembler and Tools:
1797 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
1801 Debugger: Enhanced the "tables" command to emit additional information
1803 the current set of ACPI tables, including the owner ID and flags decode.
1805 Debugger: Reimplemented the "unload" command to use the new
1806 AcpiUnloadParentTable external interface. This command was disable
1808 due to need for an unload interface.
1810 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
1812 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
1814 ----------------------------------------
1815 20 June 2012. Summary of changes for version 20120620:
1818 1) ACPICA Kernel-resident Subsystem:
1820 Implemented support to expand the "implicit notify" feature to allow
1822 devices to be notified by a single GPE. This feature automatically
1824 runtime device notification in the absence of a BIOS-provided GPE control
1825 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
1827 provided by ACPICA for Windows compatibility, and is a workaround for
1830 code errors. See the description of the AcpiSetupGpeForWake interface in
1832 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
1834 Changed some comments and internal function names to simplify and ensure
1835 correctness of the Linux code translation. No functional changes.
1837 Example Code and Data Size: These are the sizes for the OS-independent
1838 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1840 version of the code includes the debug output trace mechanism and has a
1842 larger code and data size.
1845 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1846 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1848 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
1849 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
1852 2) iASL Compiler/Disassembler and Tools:
1854 Disassembler: Added support to emit short, commented descriptions for the
1856 predefined names in order to improve the readability of the disassembled
1857 output. ACPICA BZ 959. Changes include:
1858 1) Emit descriptions for all standard predefined names (_INI, _STA,
1861 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
1862 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
1865 AcpiSrc: Fixed several long-standing Linux code translation issues.
1867 descriptions in function headers are now translated properly to lower
1870 underscores. ACPICA BZ 961. Also fixes translation problems such as
1876 local_fADT -> local_FADT
1877 execute_oSI -> execute_OSI
1879 iASL: Fixed a problem where null bytes were inadvertently emitted into
1883 iASL: Added the existing debug options to the standard help screen. There
1885 no longer two different help screens. ACPICA BZ 957.
1887 AcpiHelp: Fixed some typos in the various predefined name descriptions.
1889 expand some of the descriptions where appropriate.
1891 iASL: Fixed the -ot option (display compile times/statistics). Was not
1893 properly for standard output; only worked for the debug file case.
1895 ----------------------------------------
1896 18 May 2012. Summary of changes for version 20120518:
1899 1) ACPICA Core Subsystem:
1901 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
1903 to block until asynchronous events such as notifies and GPEs have
1905 Within ACPICA, it is only called before a notify or GPE handler is
1906 removed/uninstalled. It also may be useful for the host OS within related
1907 drivers such as the Embedded Controller driver. See the ACPICA reference
1909 additional information. ACPICA BZ 868.
1911 ACPI Tables: Added a new error message for a possible overflow failure
1913 the conversion of FADT 32-bit legacy register addresses to internal
1916 bit GAS structure representation. The GAS has a one-byte "bit length"
1918 thus limiting the register length to 255 bits. ACPICA BZ 953.
1920 Example Code and Data Size: These are the sizes for the OS-independent
1921 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1923 version of the code includes the debug output trace mechanism and has a
1925 larger code and data size.
1928 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
1929 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
1931 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
1932 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
1935 2) iASL Compiler/Disassembler and Tools:
1937 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
1939 This keyword was added late in the ACPI 5.0 release cycle and was not
1940 implemented until now.
1942 Disassembler: Added support for Operation Region externals. Adds missing
1943 support for operation regions that are defined in another table, and
1944 referenced locally via a Field or BankField ASL operator. Now generates
1946 correct External statement.
1948 Disassembler: Several additional fixes for the External() statement
1950 related to some ASL operators. Also, order the External() statements
1951 alphabetically in the disassembler output. Fixes the External()
1954 the Create* field, Alias, and Scope operators:
1955 1) Create* buffer field operators - fix type mismatch warning on
1957 2) Alias - implement missing External support
1958 3) Scope - fix to make sure all necessary externals are emitted.
1960 iASL: Improved pathname support. For include files, merge the prefix
1962 with the file pathname and eliminate unnecessary components. Convert
1963 backslashes in all pathnames to forward slashes, for readability. Include
1965 pathname changes affect both #include and Include() type operators.
1967 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
1969 of a valid line by inserting a newline and then returning the EOF during
1971 next call to GetNextLine. Prevents the line from being ignored due to EOF
1974 iASL: Implemented some changes to enhance the IDE support (-vi option.)
1976 and Warning messages are now correctly recognized for both the source
1978 browser and the global error and warning counts.
1980 ----------------------------------------
1981 20 April 2012. Summary of changes for version 20120420:
1984 1) ACPICA Core Subsystem:
1986 Implemented support for multiple notify handlers. This change adds
1989 allow multiple system and device notify handlers on Device, Thermal Zone,
1991 Processor objects. This can simplify the host OS notification
1993 Also re-worked and restructured the entire notify support code to
1995 handler installation, handler removal, notify event queuing, and notify
1996 dispatch to handler(s). Note: there can still only be two global notify
1997 handlers - one for system notifies and one for device notifies. There are
1999 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2000 Moore, Rafael Wysocki.
2002 Fixed a regression in the package repair code where the object reference
2003 count was calculated incorrectly. Regression was introduced in the commit
2004 "Support to add Package wrappers".
2006 Fixed a couple possible memory leaks in the AML parser, in the error
2008 path. Jesper Juhl, Lin Ming.
2010 Example Code and Data Size: These are the sizes for the OS-independent
2011 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2012 debug version of the code includes the debug output trace mechanism and
2014 much larger code and data size.
2017 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2018 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2020 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2021 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2024 2) iASL Compiler/Disassembler and Tools:
2026 iASL: Fixed a problem with the resource descriptor support where the
2028 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2029 included in cumulative descriptor offset, resulting in incorrect values
2031 resource tags within resource descriptors appearing after a
2033 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2035 iASL and Preprocessor: Implemented full support for the #line directive
2037 correctly track original source file line numbers through the .i
2039 output file - for error and warning messages.
2041 iASL: Expand the allowable byte constants for address space IDs.
2043 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2044 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2046 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2048 iASL: Add option to completely disable the preprocessor (-Pn).
2050 iASL: Now emit all error/warning messages to standard error (stderr) by
2051 default (instead of the previous stdout).
2053 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2055 for resource descriptor offset fix above. Update/cleanup error output
2056 routines. Enable and send iASL errors/warnings to an error logfile
2057 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2059 several extraneous "unrecognized operator" messages.
2061 ----------------------------------------
2062 20 March 2012. Summary of changes for version 20120320:
2065 1) ACPICA Core Subsystem:
2067 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2068 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2070 does not execute these methods, and therefore these methods are often
2071 untested. It has been seen on some systems where the execution of these
2072 methods causes errors and also prevents the machine from entering S5. It
2074 therefore suggested that host operating systems do not execute these
2076 by default. In the future, perhaps these methods can be optionally
2078 based on the age of the system and/or what is the newest version of
2080 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2082 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2085 Fixed a problem where the length of the local/common FADT was set too
2087 The local FADT table length cannot be set to the common length until the
2088 original length has been examined. There is code that checks the table
2090 and sets various fields appropriately. This can affect older machines
2092 early FADT versions. For example, this can cause inadvertent writes to
2094 CST_CNT register. Julian Anastasov.
2096 Fixed a mapping issue related to a physical table override. Use the
2098 mapping mechanism for tables loaded via the physical override OSL
2100 This allows for early mapping before the virtual memory manager is
2102 Thomas Renninger, Bob Moore.
2104 Enhanced the automatic return-object repair code: Repair a common problem
2106 predefined methods that are defined to return a variable-length Package
2108 sub-objects. If there is only one sub-object, some BIOS ASL code
2110 simply returns the single object instead of a Package with one sub-
2112 This new support will repair this error by wrapping a Package object
2114 the original object, creating the correct and expected Package with one
2116 object. Names that can be repaired in this manner include: _ALR, _CSD,
2118 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2121 Changed the exception code returned for invalid ACPI paths passed as
2122 parameters to external interfaces such as AcpiEvaluateObject. Was
2123 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2125 Example Code and Data Size: These are the sizes for the OS-independent
2126 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2128 version of the code includes the debug output trace mechanism and has a
2130 larger code and data size.
2133 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2134 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2136 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2137 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2140 2) iASL Compiler/Disassembler and Tools:
2142 iASL: Added the infrastructure and initial implementation of a integrated
2144 like preprocessor. This will simplify BIOS development process by
2146 the need for a separate preprocessing step during builds. On Windows, it
2148 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2149 features including full #define() macro support are still under
2151 These preprocessor directives are supported:
2164 In addition, these new command line options are supported:
2165 -D <symbol> Define symbol for preprocessor use
2166 -li Create preprocessed output file (*.i)
2167 -P Preprocess only and create preprocessor output file (*.i)
2169 Table Compiler: Fixed a problem where the equals operator within an
2171 did not work properly.
2173 Updated iASL to use the current versions of Bison/Flex. Updated the
2175 project file to invoke these tools from the standard location. ACPICA BZ
2178 Flex for Windows: V2.5.4
2179 Bison for Windows: V2.4.1
2181 ----------------------------------------
2182 15 February 2012. Summary of changes for version 20120215:
2185 1) ACPICA Core Subsystem:
2187 There have been some major changes to the sleep/wake support code, as
2188 described below (a - e).
2190 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2191 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2192 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2194 time the _BFS method is called and the _WAK method is called. NOTE: all
2196 must update their wake/resume code or else sleep/wake will not work
2200 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2202 method. Some machines require that the GPEs are enabled before the _WAK
2204 is executed. Thomas Renninger.
2206 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2208 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2210 determine whether the system is rebooting or resuming. Matthew Garrett.
2212 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2214 match the ACPI specification requirement. Rafael Wysocki.
2216 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2217 registers within the V5 FADT. This support adds two new files:
2218 hardware/hwesleep.c implements the support for the new registers. Moved
2220 sleep/wake external interfaces to hardware/hwxfsleep.c.
2223 Added a new OSL interface for ACPI table overrides,
2224 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2225 table via a physical address, instead of the logical address required by
2226 AcpiOsTableOverride. This simplifies the host implementation. Initial
2227 implementation by Thomas Renninger. The ACPICA implementation creates a
2229 shared function for table overrides that attempts both a logical and a
2232 Expanded the OSL memory read/write interfaces to 64-bit data
2233 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2234 transfer support for GAS register structures passed to AcpiRead and
2237 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2239 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2241 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2243 10% of the code and 5% of the static data, and the following hardware
2245 features become unavailable:
2246 PM Event and Control registers
2247 SCI interrupt (and handler)
2249 General Purpose Events (GPEs)
2252 FACS table (Waking vectors and Global Lock)
2254 Updated the unix tarball directory structure to match the ACPICA git
2256 tree. This ensures that the generic unix makefiles work properly (in
2257 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2260 Updated the return value of the _REV predefined method to integer value 5
2262 reflect ACPI 5.0 support.
2264 Moved the external ACPI PM timer interface prototypes to the public
2266 file where they belong.
2268 Example Code and Data Size: These are the sizes for the OS-independent
2269 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2271 version of the code includes the debug output trace mechanism and has a
2273 larger code and data size.
2276 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2277 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2279 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2280 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2283 2) iASL Compiler/Disassembler and Tools:
2285 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2286 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2287 incorrectly displayed.
2289 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2292 ----------------------------------------
2293 11 January 2012. Summary of changes for version 20120111:
2296 1) ACPICA Core Subsystem:
2298 Implemented a new mechanism to allow host device drivers to check for
2300 range conflicts with ACPI Operation Regions. Both SystemMemory and
2302 address spaces are supported. A new external interface,
2303 AcpiCheckAddressRange,
2304 allows drivers to check an address range against the ACPI namespace. See
2306 ACPICA reference for additional details. Adds one new file,
2307 utilities/utaddress.c. Lin Ming, Bob Moore.
2309 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2312 Status registers, update the ACPI 5.0 flags, and update internal data
2313 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2317 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2319 all module headers and signons, including the standard Linux header. This
2320 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2322 all ACPICA utilities.
2324 Example Code and Data Size: These are the sizes for the OS-independent
2325 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2327 version of the code includes the debug output trace mechanism and has a
2329 larger code and data size.
2332 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2333 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2335 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2336 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2339 2) iASL Compiler/Disassembler and Tools:
2341 Disassembler: fixed a problem with the automatic resource tag generation
2342 support. Fixes a problem where the resource tags are inadvertently not
2343 constructed if the table being disassembled contains external references
2345 control methods. Moved the actual construction of the tags to after the
2347 namespace is constructed (after 2nd parse is invoked due to external
2349 method references.) ACPICA BZ 941.
2351 Table Compiler: Make all "generic" operators caseless. These are the
2353 like UINT8, String, etc. Making these caseless improves ease-of-use.
2357 ----------------------------------------
2358 23 November 2011. Summary of changes for version 20111123:
2360 0) ACPI 5.0 Support:
2362 This release contains full support for the ACPI 5.0 specification, as
2365 Reduced Hardware Support:
2366 -------------------------
2368 This support allows for ACPI systems without the usual ACPI hardware.
2370 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2372 not attempt to initialize or use any of the usual ACPI hardware. Note,
2374 this flag is set, all of the following ACPI hardware is assumed to be not
2375 present and is not initialized or accessed:
2377 General Purpose Events (GPEs)
2378 Fixed Events (PM1a/PM1b and PM Control)
2379 Power Management Timer and Console Buttons (power/sleep)
2380 Real-time Clock Alarm
2382 System Control Interrupt (SCI)
2383 The FACS is assumed to be non-existent
2388 All new tables and updates to existing tables are fully supported in the
2389 ACPICA headers (for use by device drivers), the disassembler, and the
2391 Data Table Compiler. ACPI 5.0 defines these new tables:
2393 BGRT /* Boot Graphics Resource Table */
2394 DRTM /* Dynamic Root of Trust for Measurement table */
2395 FPDT /* Firmware Performance Data Table */
2396 GTDT /* Generic Timer Description Table */
2397 MPST /* Memory Power State Table */
2398 PCCT /* Platform Communications Channel Table */
2399 PMTT /* Platform Memory Topology Table */
2400 RASF /* RAS Feature table */
2402 Operation Regions/SpaceIDs:
2403 ---------------------------
2405 All new operation regions are fully supported by the iASL compiler, the
2406 disassembler, and the ACPICA runtime code (for dispatch to region
2408 The new operation region Space IDs are:
2413 Resource Descriptors:
2414 ---------------------
2416 All new ASL resource descriptors are fully supported by the iASL
2419 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2421 all new predefined resource tags). New descriptors are:
2430 ASL/AML Operators, New and Modified:
2431 ------------------------------------
2433 One new operator is added, the Connection operator, which is used to
2435 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2437 field objects within an operation region. Several new protocols are
2439 with the AccessAs operator. All are fully supported by the iASL compiler,
2440 disassembler, and runtime ACPICA AML interpreter:
2442 Connection // Declare Field Connection
2444 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2445 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2447 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2448 RawDataBuffer // Data type for Vendor Data
2451 Predefined ASL/AML Objects:
2452 ---------------------------
2454 All new predefined objects/control-methods are supported by the iASL
2456 and the ACPICA runtime validation/repair (arguments and return values.)
2458 predefined names include the following:
2460 Standard Predefined Names (Objects or Control Methods):
2461 _AEI, _CLS, _CPC, _CWS, _DEP,
2462 _DLM, _EVT, _GCP, _CRT, _GWS,
2463 _HRV, _PRE, _PSE, _SRT, _SUB.
2465 Resource Tags (Names used to access individual fields within resource
2467 _DBT, _DPL, _DRS, _END, _FLC,
2468 _IOR, _LIN, _MOD, _PAR, _PHA,
2469 _PIN, _PPI, _POL, _RXL, _SLV,
2470 _SPE, _STB, _TXL, _VEN.
2472 ACPICA External Interfaces:
2473 ---------------------------
2475 Several new interfaces have been defined for use by ACPI-related device
2476 drivers and other host OS services:
2478 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
2480 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
2481 provided by the BIOS. They are intended to be used in conjunction with
2483 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
2484 mutual exclusion with the AML code/interpreter.
2486 AcpiGetEventResources: Returns the (formatted) resource descriptors as
2488 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
2490 resource descriptors associated with hardware-reduced platform events,
2492 to the AcpiGetCurrentResources interface.
2494 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
2495 operation regions, information about the Connection() object and any
2497 length information is passed to the region handler within the Context
2500 AcpiBufferToResource: This interface converts a raw AML buffer containing
2502 resource template or resource descriptor to the ACPI_RESOURCE internal
2504 suitable for use by device drivers. Can be used by an operation region
2506 to convert the Connection() buffer object into a ACPI_RESOURCE.
2508 Miscellaneous/Tools/TestSuites:
2509 -------------------------------
2511 Support for extended _HID names (Four alpha characters instead of three).
2512 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
2513 Support for ACPI 5.0 features in the ASLTS test suite.
2514 Fully updated documentation (ACPICA and iASL reference documents.)
2516 ACPI Table Definition Language:
2517 -------------------------------
2519 Support for this language was implemented and released as a subsystem of
2521 iASL compiler in 2010. (See the iASL compiler User Guide.)
2524 Non-ACPI 5.0 changes for this release:
2525 --------------------------------------
2527 1) ACPICA Core Subsystem:
2529 Fix a problem with operation region declarations where a failure can
2532 the region name and an argument that evaluates to an object (such as the
2533 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
2536 Do not abort an ACPI table load if an invalid space ID is found within.
2538 will be caught later if the offending method is executed. ACPICA BZ 925.
2540 Fixed an issue with the FFixedHW space ID where the ID was not always
2541 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
2543 Fixed a problem with the 32-bit generation of the unix-specific OSL
2544 (osunixxf.c). Lin Ming, ACPICA BZ 936.
2546 Several changes made to enable generation with the GCC 4.6 compiler.
2550 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
2552 field registers out-of-range.
2554 2) iASL Compiler/Disassembler and Tools:
2556 iASL: Implemented the __PATH__ operator, which returns the full pathname
2558 the current source file.
2560 AcpiHelp: Automatically display expanded keyword information for all ASL
2563 Debugger: Add "Template" command to disassemble/dump resource template
2566 Added a new master script to generate and execute the ASLTS test suite.
2567 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
2569 iASL: Fix problem with listing generation during processing of the
2571 operator where AML listing was disabled until the entire Switch block was
2574 iASL: Improve support for semicolon statement terminators. Fix "invalid
2575 character" message for some cases when the semicolon is used. Semicolons
2577 now allowed after every <Term> grammar element. ACPICA BZ 927.
2579 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
2582 Disassembler: Fix problem with disassembly of the DataTableRegion
2584 where an inadvertent "Unhandled deferred opcode" message could be
2587 3) Example Code and Data Size
2589 These are the sizes for the OS-independent acpica.lib produced by the
2590 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2591 includes the debug output trace mechanism and has a much larger code and
2596 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2597 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2599 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2600 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2602 ----------------------------------------
2603 22 September 2011. Summary of changes for version 20110922:
2607 Support for ACPI 5.0 in ACPICA has been underway for several months and
2609 be released at the same time that ACPI 5.0 is officially released.
2611 The ACPI 5.0 specification is on track for release in the next few
2614 1) ACPICA Core Subsystem:
2616 Fixed a problem where the maximum sleep time for the Sleep() operator was
2617 intended to be limited to two seconds, but was inadvertently limited to
2621 Linux and Unix makefiles: Added header file dependencies to ensure
2623 generation of ACPICA core code and utilities. Also simplified the
2625 considerably through the use of the vpath variable to specify search
2629 2) iASL Compiler/Disassembler and Tools:
2631 iASL: Implemented support to check the access length for all fields
2633 access named Resource Descriptor fields. For example, if a resource field
2635 defined to be two bits, a warning is issued if a CreateXxxxField() is
2637 with an incorrect bit length. This is implemented for all current
2639 descriptor names. ACPICA BZ 930.
2641 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
2645 iASL: Fixed a couple of issues associated with variable-length package
2646 objects. 1) properly handle constants like One, Ones, Zero -- do not make
2648 VAR_PACKAGE when these are used as a package length. 2) Allow the
2650 opcode (in addition to PACKAGE) when validating object types for
2654 iASL: Emit statistics for all output files (instead of just the ASL input
2656 AML output). Includes listings, hex files, etc.
2658 iASL: Added -G option to the table compiler to allow the compilation of
2660 ACPI tables. The only part of a table that is required is the standard
2665 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
2667 which also adds correct 64-bit support. Also, now all output filenames
2669 completely lower case.
2671 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
2672 loading table files. A warning is issued for any such tables. The only
2673 exception is an FADT. This also fixes a possible fault when attempting to
2675 non-AML tables. ACPICA BZ 932.
2677 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
2679 missing table terminator could cause a fault when using the -p option.
2681 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
2684 3) Example Code and Data Size
2686 These are the sizes for the OS-independent acpica.lib produced by the
2687 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
2688 includes the debug output trace mechanism and has a much larger code and
2692 Previous Release (VC 9.0):
2693 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2694 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2695 Current Release (VC 9.0):
2696 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2697 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2700 ----------------------------------------
2701 23 June 2011. Summary of changes for version 20110623:
2703 1) ACPI CA Core Subsystem:
2705 Updated the predefined name repair mechanism to not attempt repair of a
2707 return object if a _PSS object is present. We can only sort the _TSS
2709 package if there is no _PSS within the same scope. This is because if
2712 present, the ACPI specification dictates that the _TSS Power Dissipation
2714 is to be ignored, and therefore some BIOSs leave garbage values in the
2716 Power field(s). In this case, it is best to just return the _TSS package
2718 is. Reported by, and fixed with assistance from Fenghua Yu.
2720 Added an option to globally disable the control method return value
2722 and repair. This runtime option can be used to disable return value
2725 this is causing a problem on a particular machine. Also added an option
2727 AcpiExec (-dr) to set this disable flag.
2729 All makefiles and project files: Major changes to improve generation of
2731 tools. ACPICA BZ 912:
2732 Reduce default optimization levels to improve compatibility
2733 For Linux, add strict-aliasing=0 for gcc 4
2734 Cleanup and simplify use of command line defines
2735 Cleanup multithread library support
2736 Improve usage messages
2738 Linux-specific header: update handling of THREAD_ID and pthread. For the
2740 bit case, improve casting to eliminate possible warnings, especially with
2744 Example Code and Data Size: These are the sizes for the OS-independent
2745 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2747 version of the code includes the debug output trace mechanism and has a
2749 larger code and data size.
2751 Previous Release (VC 9.0):
2752 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2753 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2754 Current Release (VC 9.0):
2755 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
2756 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2758 2) iASL Compiler/Disassembler and Tools:
2760 With this release, a new utility named "acpihelp" has been added to the
2762 package. This utility summarizes the ACPI specification chapters for the
2764 and AML languages. It generates under Linux/Unix as well as Windows, and
2765 provides the following functionality:
2766 Find/display ASL operator(s) -- with description and syntax.
2767 Find/display ASL keyword(s) -- with exact spelling and descriptions.
2768 Find/display ACPI predefined name(s) -- with description, number
2769 of arguments, and the return value data type.
2770 Find/display AML opcode name(s) -- with opcode, arguments, and
2772 Decode/display AML opcode -- with opcode name, arguments, and
2775 Service Layers: Make multi-thread support configurable. Conditionally
2777 the multi-thread support so that threading libraries will not be linked
2780 necessary. The only tool that requires multi-thread support is AcpiExec.
2782 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
2784 Bison appear to want the interface to yyerror to be a const char * (or at
2785 least this is a problem when generating iASL on some systems.) ACPICA BZ
2789 Tools: Fix for systems where O_BINARY is not defined. Only used for
2791 versions of the tools.
2793 ----------------------------------------
2794 27 May 2011. Summary of changes for version 20110527:
2796 1) ACPI CA Core Subsystem:
2798 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
2800 signature. Now, only allow SSDT, OEMx, and a null signature. History:
2801 1) Originally, we checked the table signature for "SSDT" or "PSDT".
2802 (PSDT is now obsolete.)
2803 2) We added support for OEMx tables, signature "OEM" plus a fourth
2804 "don't care" character.
2805 3) Valid tables were encountered with a null signature, so we just
2806 gave up on validating the signature, (05/2008).
2807 4) We encountered non-AML tables such as the MADT, which caused
2808 interpreter errors and kernel faults. So now, we once again allow
2809 only SSDT, OEMx, and now, also a null signature. (05/2011).
2811 Added the missing _TDL predefined name to the global name list in order
2813 enable validation. Affects both the core ACPICA code and the iASL
2816 Example Code and Data Size: These are the sizes for the OS-independent
2817 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2819 version of the code includes the debug output trace mechanism and has a
2821 larger code and data size.
2823 Previous Release (VC 9.0):
2824 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2825 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2826 Current Release (VC 9.0):
2827 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
2828 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
2830 2) iASL Compiler/Disassembler and Tools:
2832 Debugger/AcpiExec: Implemented support for "complex" method arguments on
2834 debugger command line. This adds support beyond simple integers --
2836 Strings, Buffers, and Packages. Includes support for nested packages.
2837 Increased the default command line buffer size to accommodate these
2839 See the ACPICA reference for details and syntax. ACPICA BZ 917.
2841 Debugger/AcpiExec: Implemented support for "default" method arguments for
2843 Execute/Debug command. Now, the debugger will always invoke a control
2845 with the required number of arguments -- even if the command line
2847 none or insufficient arguments. It uses default integer values for any
2849 arguments. Also fixes a bug where only six method arguments maximum were
2850 supported instead of the required seven.
2852 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
2854 also return status in order to prevent buffer overruns. See the ACPICA
2855 reference for details and syntax. ACPICA BZ 921
2857 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
2858 makefiles to simplify support for the two different but similar parser
2859 generators, bison and yacc.
2861 Updated the generic unix makefile for gcc 4. The default gcc version is
2863 expected to be 4 or greater, since options specific to gcc 4 are used.
2865 ----------------------------------------
2866 13 April 2011. Summary of changes for version 20110413:
2868 1) ACPI CA Core Subsystem:
2870 Implemented support to execute a so-called "orphan" _REG method under the
2872 device. This change will force the execution of a _REG method underneath
2875 device even if there is no corresponding operation region of type
2876 EmbeddedControl. Fixes a problem seen on some machines and apparently is
2877 compatible with Windows behavior. ACPICA BZ 875.
2879 Added more predefined methods that are eligible for automatic NULL
2881 element removal. This change adds another group of predefined names to
2884 of names that can be repaired by having NULL package elements dynamically
2885 removed. This group are those methods that return a single variable-
2887 package containing simple data types such as integers, buffers, strings.
2889 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
2892 and _TZD. ACPICA BZ 914.
2894 Split and segregated all internal global lock functions to a new file,
2897 Updated internal address SpaceID for DataTable regions. Moved this
2900 id in preparation for ACPI 5.0 changes that will include some new space
2903 change should not affect user/host code.
2905 Example Code and Data Size: These are the sizes for the OS-independent
2907 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
2909 the code includes the debug output trace mechanism and has a much larger
2914 Previous Release (VC 9.0):
2915 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
2916 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
2917 Current Release (VC 9.0):
2918 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
2919 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
2921 2) iASL Compiler/Disassembler and Tools:
2923 iASL/DTC: Major update for new grammar features. Allow generic data types
2925 custom ACPI tables. Field names are now optional. Any line can be split
2927 multiple lines using the continuation char (\). Large buffers now use
2929 continuation character(s) and no colon on the continuation lines. See the
2931 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
2934 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
2936 Since the parser stuffs a "zero" as the return value for these statements
2939 the underlying AML grammar), they were seen as "return with value" by the
2941 semantic checking. They are now seen correctly as "null" return
2944 iASL: Check if a_REG declaration has a corresponding Operation Region.
2946 check for each _REG to ensure that there is in fact a corresponding
2948 region declaration in the same scope. If not, the _REG method is not very
2950 since it probably won't be executed. ACPICA BZ 915.
2952 iASL/DTC: Finish support for expression evaluation. Added a new
2955 that implements c-style operator precedence and parenthesization. ACPICA
2959 Disassembler/DTC: Remove support for () and <> style comments in data
2962 that DTC has full expression support, we don't want to have comment
2965 start with a parentheses or a less-than symbol. Now, only the standard /*
2968 comments are supported, as well as the bracket [] comments.
2970 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
2972 headers in the acpidump file. Update the header validation to support
2974 tables. Problem introduced in previous AcpiXtract version in the change
2976 support "wrong checksum" error messages emitted by acpidump utility.
2978 iASL: Add a * option to generate all template files (as a synonym for
2982 "iasl -T *" or "iasl -T ALL".
2984 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
2986 abort the compiler on "fatal" errors, simply should abort the current
2988 This allows multiple compiles with a single (possibly wildcard) compiler
2991 ----------------------------------------
2992 16 March 2011. Summary of changes for version 20110316:
2994 1) ACPI CA Core Subsystem:
2996 Fixed a problem caused by a _PRW method appearing at the namespace root
2998 during the setup of wake GPEs. A fault could occur if a _PRW directly
3001 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3003 Implemented support for "spurious" Global Lock interrupts. On some
3005 global lock interrupt can occur without the pending flag being set. Upon
3008 interrupt, we now ensure that a thread is actually waiting for the lock
3010 signaling GL availability. Rafael Wysocki, Bob Moore.
3012 Example Code and Data Size: These are the sizes for the OS-independent
3014 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3016 the code includes the debug output trace mechanism and has a much larger
3021 Previous Release (VC 9.0):
3022 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3023 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3024 Current Release (VC 9.0):
3025 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3026 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3028 2) iASL Compiler/Disassembler and Tools:
3030 Implemented full support for the "SLIC" ACPI table. Includes support in
3032 header files, disassembler, table compiler, and template generator. Bob
3036 AcpiXtract: Correctly handle embedded comments and messages from
3038 Apparently some or all versions of acpidump will occasionally emit a
3041 "Wrong checksum", etc., into the dump file. This was causing problems for
3042 AcpiXtract. ACPICA BZ 905.
3044 iASL: Fix the Linux makefile by removing an inadvertent double file
3048 AcpiExec: Update installation of operation region handlers. Install one
3050 for a user-defined address space. This is used by the ASL test suite
3053 ----------------------------------------
3054 11 February 2011. Summary of changes for version 20110211:
3056 1) ACPI CA Core Subsystem:
3058 Added a mechanism to defer _REG methods for some early-installed
3060 Most user handlers should be installed before call to
3061 AcpiEnableSubsystem.
3062 However, Event handlers and region handlers should be installed after
3063 AcpiInitializeObjects. Override handlers for the "default" regions should
3065 installed early, however. This change executes all _REG methods for the
3066 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3067 chicken/egg issues between them. ACPICA BZ 848.
3069 Implemented an optimization for GPE detection. This optimization will
3071 ignore GPE registers that contain no enabled GPEs -- there is no need to
3072 read the register since this information is available internally. This
3073 becomes more important on machines with a large GPE space. ACPICA
3075 884. Lin Ming. Suggestion from Joe Liu.
3077 Removed all use of the highly unreliable FADT revision field. The
3079 number in the FADT has been found to be completely unreliable and cannot
3081 trusted. Only the actual table length can be used to infer the version.
3083 change updates the ACPICA core and the disassembler so that both no
3085 even look at the FADT version and instead depend solely upon the FADT
3088 Fix an unresolved name issue for the no-debug and no-error-message source
3089 generation cases. The _AcpiModuleName was left undefined in these cases,
3091 it is actually needed as a parameter to some interfaces. Define
3092 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3094 Split several large files (makefiles and project files updated)
3095 utglobal.c -> utdecode.c
3096 dbcomds.c -> dbmethod.c dbnames.c
3097 dsopcode.c -> dsargs.c dscontrol.c
3098 dsload.c -> dsload2.c
3099 aslanalyze.c -> aslbtypes.c aslwalks.c
3101 Example Code and Data Size: These are the sizes for the OS-independent
3102 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3103 debug version of the code includes the debug output trace mechanism and
3105 a much larger code and data size.
3107 Previous Release (VC 9.0):
3108 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3109 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3110 Current Release (VC 9.0):
3111 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3112 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3114 2) iASL Compiler/Disassembler and Tools:
3116 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3117 These are useful C-style macros with the standard definitions. ACPICA
3120 iASL/DTC: Added support for integer expressions and labels. Support for
3122 expressions for all integer fields in all ACPI tables. Support for labels
3124 "generic" portions of tables such as UEFI. See the iASL reference manual.
3126 Debugger: Added a command to display the status of global handlers. The
3127 "handlers" command will display op region, fixed event, and miscellaneous
3128 global handlers. installation status -- and for op regions, whether
3130 or user-installed handler will be used.
3132 iASL: Warn if reserved method incorrectly returns a value. Many
3134 names are defined such that they do not return a value. If implemented as
3136 method, issue a warning if such a name explicitly returns a value. ACPICA
3139 iASL: Added detection of GPE method name conflicts. Detects a conflict
3141 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3143 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3145 iASL/DTC: Fixed a couple input scanner issues with comments and line
3146 numbers. Comment remover could get confused and miss a comment ending.
3148 a problem with line counter maintenance.
3150 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3152 no need to abort on simple errors within a field definition.
3154 Debugger: Simplified the output of the help command. All help output now
3156 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3158 ----------------------------------------
3159 12 January 2011. Summary of changes for version 20110112:
3161 1) ACPI CA Core Subsystem:
3163 Fixed a race condition between method execution and namespace walks that
3165 possibly cause a fault. The problem was apparently introduced in version
3166 20100528 as a result of a performance optimization that reduces the
3169 namespace walks upon method exit by using the delete_namespace_subtree
3170 function instead of the delete_namespace_by_owner function used
3172 Bug is a missing namespace lock in the delete_namespace_subtree function.
3173 dana.myers@oracle.com
3175 Fixed several issues and a possible fault with the automatic "serialized"
3176 method support. History: This support changes a method to "serialized" on
3178 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3179 possibility that it cannot handle reentrancy. This fix repairs a couple
3181 issues seen in the field, especially on machines with many cores:
3183 1) Delete method children only upon the exit of the last thread,
3184 so as to not delete objects out from under other running threads
3185 (and possibly causing a fault.)
3186 2) Set the "serialized" bit for the method only upon the exit of the
3187 Last thread, so as to not cause deadlock when running threads
3189 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3190 so that there is no longer any confusion between the two.
3192 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3194 Debugger: Now lock the namespace for duration of a namespace dump.
3196 issues if the namespace is changing dynamically underneath the debugger.
3197 Especially affects temporary namespace nodes, since the debugger displays
3200 Updated the ordering of include files. The ACPICA headers should appear
3201 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3203 any necessary compiler-specific defines, etc. Affects the ACPI-related
3207 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3209 to all module headers and signons, including the Linux header. This
3211 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3214 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3215 project files for VC++ 6.0 are now obsolete. New project files can be
3217 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3220 Example Code and Data Size: These are the sizes for the OS-independent
3221 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3222 debug version of the code includes the debug output trace mechanism and
3224 much larger code and data size.
3226 Previous Release (VC 6.0):
3227 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3228 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3229 Current Release (VC 9.0):
3230 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3231 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3233 2) iASL Compiler/Disassembler and Tools:
3235 iASL: Added generic data types to the Data Table compiler. Add "generic"
3237 types such as UINT32, String, Unicode, etc., to simplify the generation
3239 platform-defined tables such as UEFI. Lin Ming.
3241 iASL: Added listing support for the Data Table Compiler. Adds listing
3243 (-l) to display actual binary output for each line of input code.
3245 ----------------------------------------
3246 09 December 2010. Summary of changes for version 20101209:
3248 1) ACPI CA Core Subsystem:
3250 Completed the major overhaul of the GPE support code that was begun in
3252 2010. Major features include: removal of _PRW execution in ACPICA (host
3253 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3254 changes to existing interfaces, simplification of GPE handler operation,
3256 a handful of new interfaces:
3262 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3264 See the ACPICA Programmer Reference for full details and programming
3265 information. See the new section 4.4 "General Purpose Event (GPE)
3267 for a full overview, and section 8.7 "ACPI General Purpose Event
3269 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3271 Bob Moore, Rafael Wysocki.
3273 Implemented a new GPE feature for Windows compatibility, the "Implicit
3275 GPE Notify". This feature will automatically issue a Notify(2) on a
3277 when a Wake GPE is received if there is no corresponding GPE method or
3278 handler. ACPICA BZ 870.
3280 Fixed a problem with the Scope() operator during table parse and load
3282 During load phase (table load or method execution), the scope operator
3284 not enter the target into the namespace. Instead, it should open a new
3286 at the target location. Linux BZ 19462, ACPICA BZ 882.
3288 Example Code and Data Size: These are the sizes for the OS-independent
3289 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3290 debug version of the code includes the debug output trace mechanism and
3292 much larger code and data size.
3295 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3296 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3298 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3299 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3301 2) iASL Compiler/Disassembler and Tools:
3303 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3305 "bus-specific" per the ACPI specification, and therefore any characters
3307 acceptable. The only checks that can be performed are for a null string
3309 perhaps for a leading asterisk. ACPICA BZ 886.
3311 iASL: Fixed a problem where a syntax error that caused a premature EOF
3312 condition on the source file emitted a very confusing error message. The
3313 premature EOF is now detected correctly. ACPICA BZ 891.
3315 Disassembler: Decode the AccessSize within a Generic Address Structure
3317 access, word access, etc.) Note, this field does not allow arbitrary bit
3318 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3320 New: AcpiNames utility - Example namespace dump utility. Shows an example
3322 ACPICA configuration for a minimal namespace dump utility. Uses table and
3323 namespace managers, but no AML interpreter. Does not add any
3325 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3326 partition and configure ACPICA. ACPICA BZ 883.
3328 AML Debugger: Increased the debugger buffer size for method return
3330 Was 4K, increased to 16K. Also enhanced error messages for debugger
3332 execution, including the buffer overflow case.
3334 ----------------------------------------
3335 13 October 2010. Summary of changes for version 20101013:
3337 1) ACPI CA Core Subsystem:
3339 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3341 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3342 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3344 Changed the type of the predefined namespace object _TZ from ThermalZone
3346 Device. This was found to be confusing to the host software that
3348 the various thermal zones, since _TZ is not really a ThermalZone.
3351 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3354 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3355 string is "Windows 2006 SP2".
3357 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3359 code automatically repairs _HID-related strings, this type of code is no
3360 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3363 Example Code and Data Size: These are the sizes for the OS-independent
3364 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3365 debug version of the code includes the debug output trace mechanism and
3367 much larger code and data size.
3370 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3371 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3373 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3374 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3376 2) iASL Compiler/Disassembler and Tools:
3378 iASL: Implemented additional compile-time validation for _HID strings.
3380 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3383 the string must be exactly seven or eight characters. For both _HID and
3385 strings, all characters must be alphanumeric. ACPICA BZ 874.
3387 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3388 descriptors that are mostly or all zeros, with the expectation that they
3390 be filled in at runtime. iASL now allows this as long as there is a
3392 tag" (name) associated with the descriptor, which gives the ASL a handle
3393 needed to modify the descriptor. ACPICA BZ 873.
3395 Added single-thread support to the generic Unix application OSL.
3397 for iASL support, this change removes the use of semaphores in the
3399 threaded ACPICA tools/applications - increasing performance. The
3400 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3401 option. ACPICA BZ 879.
3403 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3405 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3407 iASL: Moved all compiler messages to a new file, aslmessages.h.
3409 ----------------------------------------
3410 15 September 2010. Summary of changes for version 20100915:
3412 1) ACPI CA Core Subsystem:
3414 Removed the AcpiOsDerivePciId OSL interface. The various host
3416 of this function were not OS-dependent and are now obsolete and can be
3417 removed from all host OSLs. This function has been replaced by
3418 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3419 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3420 module, hwpci.c. ACPICA BZ 857.
3422 Implemented a dynamic repair for _HID and _CID strings. The following
3423 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3424 string, and 2) the entire string is uppercased. Both repairs are in
3425 accordance with the ACPI specification and will simplify host driver
3429 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3430 always UINT64. This simplifies the ACPICA code, especially any printf
3432 UINT64 is the only common data type for all thread_id types across all
3433 operating systems. It is now up to the host OSL to cast the native
3435 type to UINT64 before returning the value to ACPICA (via
3437 Lin Ming, Bob Moore.
3439 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3441 keyword is not standard across compilers, and this type allows inline to
3443 configured on a per-compiler basis. Lin Ming.
3445 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3447 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3449 during suspend/restore operations. ACPICA BZ 869.
3451 All code that implements error/warning messages with the "ACPI:" prefix
3453 been moved to a new module, utxferror.c.
3455 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
3457 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
3459 Example Code and Data Size: These are the sizes for the OS-independent
3460 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3461 debug version of the code includes the debug output trace mechanism and
3463 much larger code and data size.
3466 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3467 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3469 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3470 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3472 2) iASL Compiler/Disassembler and Tools:
3474 iASL/Disassembler: Write ACPI errors to stderr instead of the output
3476 This keeps the output files free of random error messages that may
3478 from within the namespace/interpreter code. Used this opportunity to
3480 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
3481 866. Lin Ming, Bob Moore.
3483 Tools: update some printfs for ansi warnings on size_t. Handle width
3485 of size_t on 32-bit versus 64-bit generations. Lin Ming.
3487 ----------------------------------------
3488 06 August 2010. Summary of changes for version 20100806:
3490 1) ACPI CA Core Subsystem:
3492 Designed and implemented a new host interface to the _OSI support code.
3494 will allow the host to dynamically add or remove multiple _OSI strings,
3496 well as install an optional handler that is called for each _OSI
3498 Also added a new AML debugger command, 'osi' to display and modify the
3500 _OSI string table, and test support in the AcpiExec utility. See the
3502 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
3504 AcpiInstallInterface - Add an _OSI string.
3505 AcpiRemoveInterface - Delete an _OSI string.
3506 AcpiInstallInterfaceHandler - Install optional _OSI handler.
3508 AcpiOsValidateInterface - no longer used.
3510 source/components/utilities/utosi.c
3512 Re-introduced the support to enable multi-byte transfers for Embedded
3513 Controller (EC) operation regions. A reported problem was found to be a
3515 in the host OS, not in the multi-byte support. Previously, the maximum
3517 size passed to the EC operation region handler was a single byte. There
3519 often EC Fields larger than one byte that need to be transferred, and it
3521 useful for the EC driver to lock these as a single transaction. This
3523 enables single transfers larger than 8 bits. This effectively changes the
3524 access to the EC space from ByteAcc to AnyAcc, and will probably require
3525 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
3527 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
3529 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
3530 prototype in acpiosxf.h had the output value pointer as a (void *).
3531 It should be a (UINT64 *). This may affect some host OSL code.
3533 Fixed a couple problems with the recently modified Linux makefiles for
3535 and AcpiExec. These new makefiles place the generated object files in the
3536 local directory so that there can be no collisions between the files that
3538 shared between them that are compiled with different options.
3540 Example Code and Data Size: These are the sizes for the OS-independent
3541 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3542 debug version of the code includes the debug output trace mechanism and
3544 much larger code and data size.
3547 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3548 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3550 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
3551 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
3553 2) iASL Compiler/Disassembler and Tools:
3555 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
3557 namespace from and disassemble an entire group of AML files. Useful for
3558 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
3560 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
3562 iASL: Allow multiple invocations of -e option. This change allows
3564 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
3568 ----------------------------------------
3569 02 July 2010. Summary of changes for version 20100702:
3571 1) ACPI CA Core Subsystem:
3573 Implemented several updates to the recently added GPE reference count
3574 support. The model for "wake" GPEs is changing to give the host OS
3576 control of these GPEs. Eventually, the ACPICA core will not execute any
3578 methods, since the host already must execute them. Also, additional
3580 were made to help ensure that the reference counts are kept in proper
3581 synchronization with reality. Rafael J. Wysocki.
3583 1) Ensure that GPEs are not enabled twice during initialization.
3584 2) Ensure that GPE enable masks stay in sync with the reference count.
3585 3) Do not inadvertently enable GPEs when writing GPE registers.
3586 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
3587 interface. This interface will set or clear individual GPEs for wakeup.
3588 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
3590 are now used for "runtime" GPEs only.
3592 Changed the behavior of the GPE install/remove handler interfaces. The
3595 no longer disabled during this process, as it was found to cause problems
3597 some machines. Rafael J. Wysocki.
3599 Reverted a change introduced in version 20100528 to enable Embedded
3600 Controller multi-byte transfers. This change was found to cause problems
3602 Index Fields and possibly Bank Fields. It will be reintroduced when these
3603 problems have been resolved.
3605 Fixed a problem with references to Alias objects within Package Objects.
3607 reference to an Alias within the definition of a Package was not always
3608 resolved properly. Aliases to objects like Processors, Thermal zones,
3610 were resolved to the actual object instead of a reference to the object
3613 should be. Package objects are only allowed to contain integer, string,
3614 buffer, package, and reference objects. Redhat bugzilla 608648.
3616 Example Code and Data Size: These are the sizes for the OS-independent
3617 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3618 debug version of the code includes the debug output trace mechanism and
3620 much larger code and data size.
3623 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3624 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3626 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3627 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
3629 2) iASL Compiler/Disassembler and Tools:
3631 iASL: Implemented a new compiler subsystem to allow definition and
3632 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
3634 are called "ACPI Data Tables", and the new compiler is the "Data Table
3635 Compiler". This compiler is intended to simplify the existing error-prone
3636 process of creating these tables for the BIOS, as well as allowing the
3637 disassembly, modification, recompilation, and override of existing ACPI
3639 tables. See the iASL User Guide for detailed information.
3641 iASL: Implemented a new Template Generator option in support of the new
3643 Table Compiler. This option will create examples of all known ACPI tables
3644 that can be used as the basis for table development. See the iASL
3645 documentation and the -T option.
3647 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
3650 Updated the Linux makefiles for iASL and AcpiExec to place the generated
3651 object files in the local directory so that there can be no collisions
3652 between the shared files between them that are generated with different
3655 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
3657 the #define __APPLE__ to enable this support.
3659 ----------------------------------------
3660 28 May 2010. Summary of changes for version 20100528:
3662 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
3663 available at www.acpi.info. This is primarily an errata release.
3665 1) ACPI CA Core Subsystem:
3667 Undefined ACPI tables: We are looking for the definitions for the
3669 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
3671 Implemented support to enable multi-byte transfers for Embedded
3673 (EC) operation regions. Previously, the maximum data size passed to the
3675 operation region handler was a single byte. There are often EC Fields
3677 than one byte that need to be transferred, and it is useful for the EC
3679 to lock these as a single transaction. This change enables single
3681 larger than 8 bits. This effectively changes the access to the EC space
3683 ByteAcc to AnyAcc, and will probably require changes to the host OS
3685 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
3687 transfers. Alexey Starikovskiy, Lin Ming
3689 Implemented a performance enhancement for namespace search and access.
3691 change enhances the performance of namespace searches and walks by adding
3693 backpointer to the parent in each namespace node. On large namespaces,
3695 change can improve overall ACPI performance by up to 9X. Adding a pointer
3697 each namespace node increases the overall size of the internal namespace
3699 about 5%, since each namespace entry usually consists of both a namespace
3700 node and an ACPI operand object. However, this is the first growth of the
3701 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
3703 Implemented a performance optimization that reduces the number of
3705 walks. On control method exit, only walk the namespace if the method is
3707 to have created namespace objects outside of its local scope. Previously,
3709 entire namespace was traversed on each control method exit. This change
3711 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
3714 Added support to truncate I/O addresses to 16 bits for Windows
3716 Some ASL code has been seen in the field that inadvertently has bits set
3717 above bit 15. This feature is optional and is enabled if the BIOS
3719 any Windows OSI strings. It can also be enabled by the host OS. Matthew
3722 Added support to limit the maximum time for the ASL Sleep() operator. To
3723 prevent accidental deep sleeps, limit the maximum time that Sleep() will
3724 actually sleep. Configurable, the default maximum is two seconds. ACPICA
3727 Added run-time validation support for the _WDG and_WED Microsoft
3729 methods. These objects are defined by "Windows Instrumentation", and are
3731 part of the ACPI spec. ACPICA BZ 860.
3733 Expanded all statistic counters used during namespace and device
3734 initialization from 16 to 32 bits in order to support very large
3737 Replaced all instances of %d in printf format specifiers with %u since
3739 all integers in ACPICA are unsigned.
3741 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
3745 Example Code and Data Size: These are the sizes for the OS-independent
3746 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3747 debug version of the code includes the debug output trace mechanism and
3749 much larger code and data size.
3752 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3753 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3755 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
3756 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
3758 2) iASL Compiler/Disassembler and Tools:
3760 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
3761 methods. These objects are defined by "Windows Instrumentation", and are
3763 part of the ACPI spec. ACPICA BZ 860.
3765 AcpiExec: added option to disable the memory tracking mechanism. The -dt
3766 option will disable the tracking mechanism, which improves performance
3769 AcpiExec: Restructured the command line options into -d (disable) and -e
3772 ----------------------------------------
3773 28 April 2010. Summary of changes for version 20100428:
3775 1) ACPI CA Core Subsystem:
3777 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
3778 including FADT-based and GPE Block Devices, execute any _PRW methods in
3780 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
3781 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
3782 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
3783 Devices. Provides compatibility with other ACPI implementations. Two new
3784 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
3787 Fixed a regression introduced in version 20100331 within the table
3789 where initial table loading could fail. This was introduced in the fix
3791 AcpiReallocateRootTable. Also, renamed some of fields in the table
3793 data structures to clarify their meaning and use.
3795 Fixed a possible allocation overrun during internal object copy in
3796 AcpiUtCopySimpleObject. The original code did not correctly handle the
3798 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
3801 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
3802 possible access beyond end-of-allocation. Also, now fully validate
3804 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
3806 Example Code and Data Size: These are the sizes for the OS-independent
3807 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3808 debug version of the code includes the debug output trace mechanism and
3810 much larger code and data size.
3813 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3814 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3816 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
3817 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
3819 2) iASL Compiler/Disassembler and Tools:
3821 iASL: Implemented Min/Max/Len/Gran validation for address resource
3822 descriptors. This change implements validation for the address fields
3824 are common to all address-type resource descriptors. These checks are
3825 implemented: Checks for valid Min/Max, length within the Min/Max window,
3826 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
3828 table 6-40 in the ACPI 4.0a specification. Also split the large
3830 and aslrestype2.c files into five new files. ACPICA BZ 840.
3832 iASL: Added support for the _Wxx predefined names. This support was
3834 and these names were not recognized by the compiler as valid predefined
3835 names. ACPICA BZ 851.
3837 iASL: Added an error for all predefined names that are defined to return
3839 value and thus must be implemented as Control Methods. These include all
3841 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
3842 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
3844 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
3846 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
3848 dynamically loaded via the Load() operator. Also cleaned up output for
3851 ta and -tc options. ACPICA BZ 853.
3853 Tests: Added a new file with examples of extended iASL error checking.
3854 Demonstrates the advanced error checking ability of the iASL compiler.
3855 Available at tests/misc/badcode.asl.
3857 ----------------------------------------
3858 31 March 2010. Summary of changes for version 20100331:
3860 1) ACPI CA Core Subsystem:
3862 Completed a major update for the GPE support in order to improve support
3864 shared GPEs and to simplify both host OS and ACPICA code. Added a
3866 count mechanism to support shared GPEs that require multiple device
3868 Several external interfaces have changed. One external interface has been
3869 removed. One new external interface was added. Most of the GPE external
3870 interfaces now use the GPE spinlock instead of the events mutex (and the
3871 Flags parameter for many GPE interfaces has been removed.) See the
3873 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
3875 Wysocki. ACPICA BZ 831.
3878 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
3884 Implemented write support for DataTable operation regions. These regions
3886 defined via the DataTableRegion() operator. Previously, only read support
3888 implemented. The ACPI specification allows DataTableRegions to be
3892 Implemented a new subsystem option to force a copy of the DSDT to local
3893 memory. Optionally copy the entire DSDT to local memory (instead of
3895 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
3897 the original DSDT, creating the need for this option. Default is FALSE,
3901 Implemented detection of a corrupted or replaced DSDT. This change adds
3902 support to detect a DSDT that has been corrupted and/or replaced from
3904 the OS (by firmware). This is typically catastrophic for the system, but
3906 been seen on some machines. Once this problem has been detected, the DSDT
3907 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
3909 Fixed two problems with AcpiReallocateRootTable during the root table
3911 When copying the root table to the new allocation, the length used was
3912 incorrect. The new size was used instead of the current table size,
3914 too much data was copied. Also, the count of available slots for ACPI
3916 was not set correctly. Alexey Starikovskiy, Bob Moore.
3918 Example Code and Data Size: These are the sizes for the OS-independent
3919 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3920 debug version of the code includes the debug output trace mechanism and
3922 much larger code and data size.
3925 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
3926 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
3928 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
3929 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
3931 2) iASL Compiler/Disassembler and Tools:
3933 iASL: Implement limited typechecking for values returned from predefined
3934 control methods. The type of any returned static (unnamed) object is now
3935 validated. For example, Return(1). ACPICA BZ 786.
3937 iASL: Fixed a predefined name object verification regression. Fixes a
3939 introduced in version 20100304. An error is incorrectly generated if a
3940 predefined name is declared as a static named object with a value defined
3941 using the keywords "Zero", "One", or "Ones". Lin Ming.
3943 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
3945 reducing the requested registry access rights. ACPICA BZ 842.
3947 Disassembler: fixed a possible fault when generating External()
3949 Introduced in commit ae7d6fd: Properly handle externals with parent-
3951 (carat). Fixes a string length allocation calculation. Lin Ming.
3953 ----------------------------------------
3954 04 March 2010. Summary of changes for version 20100304:
3956 1) ACPI CA Core Subsystem:
3958 Fixed a possible problem with the AML Mutex handling function
3959 AcpiExReleaseMutex where the function could fault under the very rare
3960 condition when the interpreter has blocked, the interpreter lock is
3962 the interpreter is then reentered via the same thread, and attempts to
3963 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
3967 Implemented additional configuration support for the AML "Debug Object".
3968 Output from the debug object can now be enabled via a global variable,
3969 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
3971 This debug output is now available in the release version of ACPICA
3973 of just the debug version. Also, the entire debug output module can now
3975 configured out of the ACPICA build if desired. One new file added,
3976 executer/exdebug.c. Lin Ming, Bob Moore.
3978 Added header support for the ACPI MCHI table (Management Controller Host
3979 Interface Table). This table was added in ACPI 4.0, but the defining
3981 has only recently become available.
3983 Standardized output of integer values for ACPICA warnings/errors. Always
3985 0x prefix for hex output, always use %u for unsigned integer decimal
3987 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
3989 invocations.) These invocations were converted from the original
3990 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
3992 Example Code and Data Size: These are the sizes for the OS-independent
3993 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3994 debug version of the code includes the debug output trace mechanism and
3996 much larger code and data size.
3999 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4000 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4002 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4003 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4005 2) iASL Compiler/Disassembler and Tools:
4007 iASL: Implemented typechecking support for static (non-control method)
4008 predefined named objects that are declared with the Name() operator. For
4009 example, the type of this object is now validated to be of type Integer:
4010 Name(_BBN, 1). This change migrates the compiler to using the core
4012 name table instead of maintaining a local version. Added a new file,
4013 aslpredef.c. ACPICA BZ 832.
4015 Disassembler: Added support for the ACPI 4.0 MCHI table.
4017 ----------------------------------------
4018 21 January 2010. Summary of changes for version 20100121:
4020 1) ACPI CA Core Subsystem:
4022 Added the 2010 copyright to all module headers and signons. This affects
4023 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4024 tools/utilities, and the test suites.
4026 Implemented a change to the AcpiGetDevices interface to eliminate
4028 invocations of the _STA method. In the case where a specific _HID is
4029 requested, do not run _STA until a _HID match is found. This eliminates
4030 potentially dozens of _STA calls during a search for a particular
4032 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4034 Implemented an additional repair for predefined method return values.
4036 to repair unexpected NULL elements within returned Package objects.
4039 Integer of value zero, a NULL String, or a zero-length Buffer as
4041 ACPICA BZ 818. Lin Ming, Bob Moore.
4043 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4045 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4047 64-bit AML integers). It is now obsolete and this change removes it from
4049 ACPICA code base, replaced by UINT64. The original typedef has been
4051 for now for compatibility with existing device driver code. ACPICA BZ
4054 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4056 the parse tree object.
4058 Added additional warning options for the gcc-4 generation. Updated the
4060 accordingly. This includes some code restructuring to eliminate
4062 code, elimination of some gotos, elimination of unused return values,
4064 additional casting, and removal of redundant declarations.
4066 Example Code and Data Size: These are the sizes for the OS-independent
4067 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4068 debug version of the code includes the debug output trace mechanism and
4070 much larger code and data size.
4073 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4074 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4076 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4077 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4079 2) iASL Compiler/Disassembler and Tools:
4081 No functional changes for this release.
4083 ----------------------------------------
4084 14 December 2009. Summary of changes for version 20091214:
4086 1) ACPI CA Core Subsystem:
4088 Enhanced automatic data type conversions for predefined name repairs.
4090 change expands the automatic repairs/conversions for predefined name
4092 values to make Integers, Strings, and Buffers fully interchangeable.
4095 Buffer can be converted to a Package of Integers if necessary. The
4097 module was completely restructured. Lin Ming, Bob Moore.
4099 Implemented automatic removal of null package elements during predefined
4101 repairs. This change will automatically remove embedded and trailing NULL
4102 package elements from returned package objects that are defined to
4105 variable number of sub-packages. The driver is then presented with a
4107 with no null elements to deal with. ACPICA BZ 819.
4109 Implemented a repair for the predefined _FDE and _GTM names. The expected
4110 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4112 possible problems (both seen in the field), where a package of integers
4114 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4117 Implemented additional module-level code support. This change will
4119 execute module-level code that is not at the root of the namespace (under
4121 Device object, etc.). Now executes the code within the current scope
4123 of the root. ACPICA BZ 762. Lin Ming.
4125 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4127 problem where mutex errors can occur when running a _REG method that is
4129 the same scope as a method-defined operation region or an operation
4131 under a module-level IF block. This type of code is rare, so the problem
4133 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4135 Fixed a possible memory leak during module-level code execution. An
4137 could be leaked for each block of executed module-level code if the
4138 interpreter slack mode is enabled This change deletes any implicitly
4140 object from the module-level code block. Lin Ming.
4142 Removed messages for successful predefined repair(s). The repair
4144 was considered too wordy. Now, messages are only unconditionally emitted
4146 the return object cannot be repaired. Existing messages for successful
4147 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4150 Example Code and Data Size: These are the sizes for the OS-independent
4151 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4152 debug version of the code includes the debug output trace mechanism and
4154 much larger code and data size.
4157 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4158 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4160 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4161 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4163 2) iASL Compiler/Disassembler and Tools:
4165 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4167 were no longer automatically removed at the termination of the compile.
4169 acpiexec: Implemented the -f option to specify default region fill value.
4170 This option specifies the value used to initialize buffers that simulate
4171 operation regions. Default value is zero. Useful for debugging problems
4173 depend on a specific initial value for a region or field.
4175 ----------------------------------------
4176 12 November 2009. Summary of changes for version 20091112:
4178 1) ACPI CA Core Subsystem:
4180 Implemented a post-order callback to AcpiWalkNamespace. The existing
4181 interface only has a pre-order callback. This change adds an additional
4182 parameter for a post-order callback which will be more useful for bus
4184 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4186 Modified the behavior of the operation region memory mapping cache for
4187 SystemMemory. Ensure that the memory mappings created for operation
4189 do not cross 4K page boundaries. Crossing a page boundary while mapping
4190 regions can cause kernel warnings on some hosts if the pages have
4192 attributes. Such regions are probably BIOS bugs, and this is the
4194 Linux BZ 14445. Lin Ming.
4196 Implemented an automatic repair for predefined methods that must return
4197 sorted lists. This change will repair (by sorting) packages returned by
4199 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4201 and do not contain NULL package elements. Adds one new file,
4202 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4204 Fixed a possible fault during predefined name validation if a return
4206 object contains NULL elements. Also adds a warning if a NULL element is
4207 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4209 include repair or removal of all such NULL elements where possible.
4211 Implemented additional module-level executable AML code support. This
4213 will execute module-level code that is not at the root of the namespace
4214 (under a Device object, etc.) at table load time. Module-level executable
4216 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4218 Implemented a new internal function to create Integer objects. This
4220 simplifies miscellaneous object creation code. ACPICA BZ 823.
4222 Reduced the severity of predefined repair messages, Warning to Info.
4224 the object was successfully repaired, a warning is too severe. Reduced to
4226 info message for now. These messages may eventually be changed to debug-
4230 Example Code and Data Size: These are the sizes for the OS-independent
4231 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4232 debug version of the code includes the debug output trace mechanism and
4234 much larger code and data size.
4237 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4238 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4240 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4241 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4243 2) iASL Compiler/Disassembler and Tools:
4245 iASL: Implemented Switch() with While(1) so that Break works correctly.
4247 change correctly implements the Switch operator with a surrounding
4249 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4251 iASL: Added a message if a package initializer list is shorter than
4253 length. Adds a new remark for a Package() declaration if an initializer
4255 exists, but is shorter than the declared length of the package. Although
4256 technically legal, this is probably a coding error and it is seen in the
4257 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4259 iASL: Fixed a problem where the compiler could fault after the maximum
4261 of errors was reached (200).
4263 acpixtract: Fixed a possible warning for pointer cast if the compiler
4265 level set very high.
4267 ----------------------------------------
4268 13 October 2009. Summary of changes for version 20091013:
4270 1) ACPI CA Core Subsystem:
4272 Fixed a problem where an Operation Region _REG method could be executed
4274 than once. If a custom address space handler is installed by the host
4276 the "initialize operation regions" phase of the ACPICA initialization,
4278 _REG methods for that address space could be executed twice. This change
4279 fixes the problem. ACPICA BZ 427. Lin Ming.
4281 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4282 invocation of "Scope(\)" is executed (change scope to root), one internal
4283 operand object was leaked. Lin Ming.
4285 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4286 return value is defined as a Field object in the AML, and the field
4287 size is less than or equal to the default width of an integer (32 or
4289 can incorrectly return an Integer instead of a Buffer. ACPICA now
4290 automatically repairs this problem. ACPICA BZ 810.
4292 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4294 "OEM Information" field is often incorrectly returned as an Integer with
4295 value zero if the field is not supported by the platform. This is due to
4297 ambiguity in the ACPI specification. The field should always be a string.
4298 ACPICA now automatically repairs this problem by returning a NULL string
4299 within the returned Package. ACPICA BZ 807.
4301 Example Code and Data Size: These are the sizes for the OS-independent
4302 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4303 debug version of the code includes the debug output trace mechanism and
4305 much larger code and data size.
4308 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4309 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4311 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4312 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4314 2) iASL Compiler/Disassembler and Tools:
4316 Disassembler: Fixed a problem where references to external symbols that
4317 contained one or more parent-prefixes (carats) were not handled
4319 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4321 Disassembler: Restructured the code so that all functions that handle
4322 external symbols are in a single module. One new file is added,
4325 AML Debugger: Added a max count argument for the Batch command (which
4326 executes multiple predefined methods within the namespace.)
4328 iASL: Updated the compiler documentation (User Reference.) Available at
4329 http://www.acpica.org/documentation/. ACPICA BZ 750.
4331 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4334 ----------------------------------------
4335 03 September 2009. Summary of changes for version 20090903:
4337 1) ACPI CA Core Subsystem:
4339 For Windows Vista compatibility, added the automatic execution of an _INI
4340 method located at the namespace root (\_INI). This method is executed at
4341 table load time. This support is in addition to the automatic execution
4343 \_SB._INI. Lin Ming.
4345 Fixed a possible memory leak in the interpreter for AML package objects
4347 the package initializer list is longer than the defined size of the
4349 This apparently can only happen if the BIOS changes the package size on
4351 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4352 interpreter will truncate the package to the defined size (and issue an
4354 message), but previously could leave the extra objects undeleted if they
4356 pre-created during the argument processing (such is the case if the
4358 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4360 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4361 This has been reported in the field. Previously, ACPICA would zero out
4363 buffer/string. Now, the operation is treated as a noop. Provides Windows
4364 compatibility. ACPICA BZ 803. Lin Ming.
4366 Removed an extraneous error message for ASL constructs of the form
4367 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4369 are seen in many BIOSs and are once again treated as NOOPs and no error
4371 emitted when they are encountered. ACPICA BZ 785.
4373 Fixed an extraneous warning message if a _DSM reserved method returns a
4374 Package object. _DSM can return any type of object, so validation on the
4375 return type cannot be performed. ACPICA BZ 802.
4377 Example Code and Data Size: These are the sizes for the OS-independent
4378 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4379 debug version of the code includes the debug output trace mechanism and
4381 much larger code and data size.
4384 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4385 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4387 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4388 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4390 2) iASL Compiler/Disassembler and Tools:
4392 iASL: Fixed a problem with the use of the Alias operator and Resource
4393 Templates. The correct alias is now constructed and no error is emitted.
4396 iASL: Implemented the -I option to specify additional search directories
4398 include files. Allows multiple additional search paths for include files.
4399 Directories are searched in the order specified on the command line
4401 the local directory is searched.) ACPICA BZ 800.
4403 iASL: Fixed a problem where the full pathname for include files was not
4404 emitted for warnings/errors. This caused the IDE support to not work
4405 properly. ACPICA BZ 765.
4407 iASL: Implemented the -@ option to specify a Windows-style response file
4408 containing additional command line options. ACPICA BZ 801.
4410 AcpiExec: Added support to load multiple AML files simultaneously (such
4413 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4414 pathname. These features allow all machine tables to be easily loaded and
4415 debugged together. ACPICA BZ 804.
4417 Disassembler: Added missing support for disassembly of HEST table Error
4421 ----------------------------------------
4422 30 July 2009. Summary of changes for version 20090730:
4424 The ACPI 4.0 implementation for ACPICA is complete with this release.
4426 1) ACPI CA Core Subsystem:
4428 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4429 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4431 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4433 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4435 have been some ACPI 4.0 changes to other existing tables. Split the large
4436 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4438 ACPI 4.0: Implemented predefined name validation for all new names. There
4440 31 new names in ACPI 4.0. The predefined validation module was split into
4442 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4444 Implemented support for so-called "module-level executable code". This is
4445 executable AML code that exists outside of any control method and is
4447 to be executed at table load time. Although illegal since ACPI 2.0, this
4449 of code still exists and is apparently still being created. Blocks of
4451 code are now detected and executed as intended. Currently, the code
4453 must exist under either an If, Else, or While construct; these are the
4454 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
4456 Implemented an automatic dynamic repair for predefined names that return
4457 nested Package objects. This applies to predefined names that are defined
4459 return a variable-length Package of sub-packages. If the number of sub-
4460 packages is one, BIOS code is occasionally seen that creates a simple
4462 package with no sub-packages. This code attempts to fix the problem by
4463 wrapping a new package object around the existing package. These methods
4465 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
4469 Fixed a regression introduced in 20090625 for the AcpiGetDevices
4471 The _HID/_CID matching was broken and no longer matched IDs correctly.
4475 Fixed a problem with AcpiReset where the reset would silently fail if the
4476 register was one of the protected I/O ports. AcpiReset now bypasses the
4478 validation mechanism. This may eventually be driven into the
4482 Fixed a regression related to the recent update of the AcpiRead/Write
4483 interfaces. A sleep/suspend could fail if the optional PM2 Control
4485 does not exist during an attempt to write the Bus Master Arbitration bit.
4486 (However, some hosts already delete the code that writes this bit, and
4488 code may in fact be obsolete at this date.) ACPICA BZ 799.
4490 Fixed a problem where AcpiTerminate could fault if inadvertently called
4492 in succession. ACPICA BZ 795.
4494 Example Code and Data Size: These are the sizes for the OS-independent
4495 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4496 debug version of the code includes the debug output trace mechanism and
4498 much larger code and data size.
4501 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4502 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4504 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4505 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4507 2) iASL Compiler/Disassembler and Tools:
4509 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
4510 changes to existing tables. ACPICA BZ 775.
4512 ----------------------------------------
4513 25 June 2009. Summary of changes for version 20090625:
4515 The ACPI 4.0 Specification was released on June 16 and is available at
4516 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
4517 continue for the next few releases.
4519 1) ACPI CA Core Subsystem:
4521 ACPI 4.0: Implemented interpreter support for the IPMI operation region
4522 address space. Includes support for bi-directional data buffers and an
4524 address space handler (to be installed by an IPMI device driver.) ACPICA
4528 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
4530 support in both the header files and the disassembler.
4532 Completed a major update for the AcpiGetObjectInfo external interface.
4534 - Support for variable, unlimited length HID, UID, and CID strings.
4535 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
4537 - Call the _SxW power methods on behalf of a device object.
4538 - Determine if a device is a PCI root bridge.
4539 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
4540 These changes will require an update to all callers of this interface.
4542 the updated ACPICA Programmer Reference for details. One new source file
4544 been added - utilities/utids.c. ACPICA BZ 368, 780.
4546 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
4547 transfers. The Value parameter has been extended from 32 bits to 64 bits
4549 order to support new ACPI 4.0 tables. These changes will require an
4552 all callers of these interfaces. See the ACPICA Programmer Reference for
4553 details. ACPICA BZ 768.
4555 Fixed several problems with AcpiAttachData. The handler was not invoked
4557 the host node was deleted. The data sub-object was not automatically
4559 when the host node was deleted. The interface to the handler had an
4561 parameter, this was removed. ACPICA BZ 778.
4563 Enhanced the function that dumps ACPI table headers. All non-printable
4564 characters in the string fields are now replaced with '?' (Signature,
4566 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
4567 these fields are occasionally seen in the field. ACPICA BZ 788.
4569 Fixed a problem with predefined method repair code where the code that
4570 attempts to repair/convert an object of incorrect type is only executed
4572 the first time the predefined method is called. The mechanism that
4574 warnings on subsequent calls was interfering with the repair mechanism.
4577 Fixed a possible memory leak in the predefined validation/repair code
4580 buffer is automatically converted to an expected string object.
4582 Removed obsolete 16-bit files from the distribution and from the current
4584 tree head. ACPICA BZ 776.
4586 Example Code and Data Size: These are the sizes for the OS-independent
4587 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4588 debug version of the code includes the debug output trace mechanism and
4590 much larger code and data size.
4593 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4594 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4596 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
4597 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
4599 2) iASL Compiler/Disassembler and Tools:
4601 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
4602 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
4604 ACPI 4.0: iASL - implemented compile-time validation support for all new
4605 predefined names and control methods (31 total). ACPICA BZ 769.
4607 ----------------------------------------
4608 21 May 2009. Summary of changes for version 20090521:
4610 1) ACPI CA Core Subsystem:
4612 Disabled the preservation of the SCI enable bit in the PM1 control
4614 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
4617 a "preserved" bit - "OSPM always preserves this bit position", section
4618 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
4619 because the bit needs to be explicitly set by the OS as a workaround. No
4620 machines fail if the bit is not preserved. Therefore, ACPICA no longer
4621 attempts to preserve this bit.
4623 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
4624 incorrectly formed _PRT package could cause a fault. Added validation to
4625 ensure that each package element is actually a sub-package.
4627 Implemented a new interface to install or override a single control
4629 AcpiInstallMethod. This interface is useful when debugging in order to
4631 an existing method or to install a missing method without having to
4633 the entire ACPI table. See the ACPICA Programmer Reference for use and
4634 examples. Lin Ming, Bob Moore.
4636 Fixed several reference count issues with the DdbHandle object that is
4637 created from a Load or LoadTable operator. Prevent premature deletion of
4639 object. Also, mark the object as invalid once the table has been
4641 This is needed because the handle itself may not be deleted after the
4643 unload, depending on whether it has been stored in a named object by the
4646 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
4647 mutexes of the same sync level are acquired but then not released in
4649 opposite order, the internally maintained Current Sync Level becomes
4651 and can cause subsequent execution errors. ACPICA BZ 471.
4653 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
4654 specification has been changed to make the SyncLevel for mutex objects
4656 useful. When releasing a mutex, the SyncLevel of the mutex must now be
4658 same as the current sync level. This makes more sense than the previous
4660 (SyncLevel less than or equal). This change updates the code to match the
4663 Fixed a problem with the local version of the AcpiOsPurgeCache function.
4665 (local) cache must be locked during all cache object deletions. Andrew
4668 Updated the Load operator to use operation region interfaces. This
4670 direct memory mapping with region access calls. Now, all region accesses
4672 through the installed region handler as they should.
4674 Simplified and optimized the NsGetNextNode function. Reduced parameter
4676 and reduced code for this frequently used function.
4678 Example Code and Data Size: These are the sizes for the OS-independent
4679 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4680 debug version of the code includes the debug output trace mechanism and
4682 much larger code and data size.
4685 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4686 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4688 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
4689 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
4691 2) iASL Compiler/Disassembler and Tools:
4693 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
4695 with sub-table disassembly and handling invalid sub-tables. Attempt
4697 after an invalid sub-table ID.
4699 ----------------------------------------
4700 22 April 2009. Summary of changes for version 20090422:
4702 1) ACPI CA Core Subsystem:
4704 Fixed a compatibility issue with the recently released I/O port
4706 mechanism. For windows compatibility, 1) On a port protection violation,
4707 simply ignore the request and do not return an exception (allow the
4709 method to continue execution.) 2) If only part of the request overlaps a
4710 protected port, read/write the individual ports that are not protected.
4714 Enhanced the execution of the ASL/AML BreakPoint operator so that it
4716 breaks into the AML debugger if the debugger is present. This matches the
4717 ACPI-defined behavior.
4719 Fixed several possible warnings related to the use of the configurable
4720 ACPI_THREAD_ID. This type can now be configured as either an integer or a
4721 pointer with no warnings. Also fixes several warnings in printf-like
4722 statements for the 64-bit build when the type is configured as a pointer.
4725 Fixed a number of possible warnings when compiling with gcc 4+ (depending
4727 warning options.) Examples include printf formats, aliasing, unused
4729 missing prototypes, missing switch default statements, use of non-ANSI
4730 library functions, use of non-ANSI constructs. See generate/unix/Makefile
4732 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
4734 Example Code and Data Size: These are the sizes for the OS-independent
4735 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4736 debug version of the code includes the debug output trace mechanism and
4738 much larger code and data size.
4741 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4742 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4744 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
4745 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
4747 2) iASL Compiler/Disassembler and Tools:
4749 iASL: Fixed a generation warning from Bison 2.3 and fixed several
4754 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
4756 correctly digest Windows/DOS formatted files (with CR/LF).
4758 iASL: Added a new option for "quiet mode" (-va) that produces only the
4759 compilation summary, not individual errors and warnings. Useful for large
4762 AcpiExec: Implemented a new option (-z) to enable a forced
4764 timeout that can be used to detect hang conditions during execution of
4766 code (includes both internal semaphores and AML-defined mutexes and
4769 Added new makefiles for the generation of acpica in a generic unix-like
4770 environment. These makefiles are intended to generate the acpica tools
4772 utilities from the original acpica git source tree structure.
4774 Test Suites: Updated and cleaned up the documentation files. Updated the
4775 copyrights to 2009, affecting all source files. Use the new version of
4777 with quiet mode. Increased the number of available semaphores in the
4779 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
4781 an alternate implementation of the semaphore timeout to allow aslts to
4782 execute fully on Cygwin.
4784 ----------------------------------------
4785 20 March 2009. Summary of changes for version 20090320:
4787 1) ACPI CA Core Subsystem:
4789 Fixed a possible race condition between AcpiWalkNamespace and dynamic
4791 unloads. Added a reader/writer locking mechanism to allow multiple
4793 namespace walks (readers), but block a dynamic table unload until it can
4795 exclusive write access to the namespace. This fixes a problem where a
4797 unload could (possibly catastrophically) delete the portion of the
4799 that is currently being examined by a walk. Adds a new file, utlock.c,
4801 implements the reader/writer lock mechanism. ACPICA BZ 749.
4803 Fixed a regression introduced in version 20090220 where a change to the
4805 handling could cause the ACPICA subsystem to access non-existent I/O
4808 Modified the handling of FADT register and table (FACS/DSDT) addresses.
4810 FADT can contain both 32-bit and 64-bit versions of these addresses.
4811 Previously, the 64-bit versions were favored, meaning that if both 32 and
4813 versions were valid, but not equal, the 64-bit version was used. This was
4814 found to cause some machines to fail. Now, in this case, the 32-bit
4816 is used instead. This now matches the Windows behavior.
4818 Implemented a new mechanism to protect certain I/O ports. Provides
4820 compatibility and protects the standard PC I/O ports from access via AML
4821 code. Adds a new file, hwvalid.c
4823 Fixed a possible extraneous warning message from the FADT support. The
4824 message warns of a 32/64 length mismatch between the legacy and GAS
4825 definitions for a register.
4827 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
4829 made obsolete by the port protection mechanism above. It was previously
4831 to validate the entire address range of an operation region, which could
4833 incorrect if the range included illegal ports, but fields within the
4834 operation region did not actually access those ports. Validation is now
4835 performed on a per-field basis instead of the entire region.
4837 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
4838 Ignored bits must be "preserved" according to the ACPI spec. Usually,
4840 means a read/modify/write when writing to the register. However, for
4842 registers, writing a one means clear the event. Writing a zero means
4844 the event (do not clear.) This behavior is clarified in the ACPI 4.0
4846 and the ACPICA code now simply always writes a zero to the ignored bit.
4848 Modified the handling of ignored bits for the PM1 A/B Control Registers.
4850 per the ACPI specification, for the control registers, preserve
4851 (read/modify/write) all bits that are defined as either reserved or
4854 Updated the handling of write-only bits in the PM1 A/B Control Registers.
4855 When reading the register, zero the write-only bits as per the ACPI spec.
4856 ACPICA BZ 443. Lin Ming.
4858 Removed "Linux" from the list of supported _OSI strings. Linux no longer
4859 wants to reply true to this request. The Windows strings are the only
4861 through the AML that are tested and known to work properly.
4864 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4865 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4867 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
4868 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
4870 2) iASL Compiler/Disassembler and Tools:
4872 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
4876 ----------------------------------------
4877 20 February 2009. Summary of changes for version 20090220:
4879 1) ACPI CA Core Subsystem:
4881 Optimized the ACPI register locking. Removed locking for reads from the
4883 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
4885 not required when reading the single-bit registers. The
4886 AcpiGetRegisterUnlocked function is no longer needed and has been
4888 This will improve performance for reads on these registers. ACPICA BZ
4891 Fixed the parameter validation for AcpiRead/Write. Now return
4892 AE_BAD_PARAMETER if the input register pointer is null, and
4895 the register has an address of zero. Previously, these cases simply
4897 AE_OK. For optional registers such as PM1B status/enable/control, the
4899 should check for a valid register address before calling. ACPICA BZ 748.
4901 Renamed the external ACPI bit register access functions. Renamed
4902 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
4903 functions. The new names are AcpiReadBitRegister and
4904 AcpiWriteBitRegister.
4905 Also, restructured the code for these functions by simplifying the code
4907 and condensing duplicate code to reduce code size.
4909 Added new functions to transparently handle the possibly split PM1 A/B
4910 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
4912 now handle the split registers for PM1 Status, Enable, and Control.
4917 Added a function to handle the PM1 control registers,
4918 AcpiHwWritePm1Control.
4919 This function writes both of the PM1 control registers (A/B). These
4921 are different than the PM1 A/B status and enable registers in that
4923 values can be written to the A/B registers. Most notably, the SLP_TYP
4925 can be different, as per the values returned from the _Sx predefined
4928 Removed an extra register write within AcpiHwClearAcpiStatus. This
4930 was writing an optional PM1B status register twice. The existing call to
4932 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
4934 register. ACPICA BZ 751.
4936 Split out the PM1 Status registers from the FADT. Added new globals for
4938 registers (A/B), similar to the way the PM1 Enable registers are handled.
4939 Instead of overloading the FADT Event Register blocks. This makes the
4941 clearer and less prone to error.
4943 Fixed the warning message for when the platform contains too many ACPI
4945 for the default size of the global root table data structure. The
4947 for the truncation value was incorrect.
4949 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
4950 obsolete macro, since it is now a simple reference to ->common.type.
4952 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
4954 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
4955 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
4956 simply SLEEP_TYPE. ACPICA BZ 754.
4958 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
4959 function is only needed on 64-bit host operating systems and is thus not
4960 included for 32-bit hosts.
4962 Debug output: print the input and result for invocations of the _OSI
4964 control method via the ACPI_LV_INFO debug level. Also, reduced some of
4966 verbosity of this debug level. Len Brown.
4968 Example Code and Data Size: These are the sizes for the OS-independent
4969 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4970 debug version of the code includes the debug output trace mechanism and
4972 much larger code and data size.
4975 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
4976 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
4978 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
4979 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
4981 2) iASL Compiler/Disassembler and Tools:
4983 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
4984 various legal performance profiles.
4986 ----------------------------------------
4987 23 January 2009. Summary of changes for version 20090123:
4989 1) ACPI CA Core Subsystem:
4991 Added the 2009 copyright to all module headers and signons. This affects
4992 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4993 the tools/utilities.
4995 Implemented a change to allow the host to override any ACPI table,
4997 dynamically loaded tables. Previously, only the DSDT could be replaced by
4999 host. With this change, the AcpiOsTableOverride interface is called for
5001 table found in the RSDT/XSDT during ACPICA initialization, and also
5003 a table is dynamically loaded via the AML Load operator.
5005 Updated FADT flag definitions, especially the Boot Architecture flags.
5007 Debugger: For the Find command, automatically pad the input ACPI name
5009 underscores if the name is shorter than 4 characters. This enables a
5011 with the actual namespace entry which is itself padded with underscores.
5013 Example Code and Data Size: These are the sizes for the OS-independent
5014 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5015 debug version of the code includes the debug output trace mechanism and
5017 much larger code and data size.
5020 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5021 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5023 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5024 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5026 2) iASL Compiler/Disassembler and Tools:
5028 Fix build error under Bison-2.4.
5030 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5032 flags. Now decode all flags, regardless of the FADT version. Flag output
5033 includes the FADT version which first defined each flag.
5035 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5037 DSDT). Windows only.
5039 ----------------------------------------
5040 04 December 2008. Summary of changes for version 20081204:
5042 1) ACPI CA Core Subsystem:
5044 The ACPICA Programmer Reference has been completely updated and revamped
5046 this release. This includes updates to the external interfaces, OSL
5047 interfaces, the overview sections, and the debugger reference.
5049 Several new ACPICA interfaces have been implemented and documented in the
5050 programmer reference:
5051 AcpiReset - Writes the reset value to the FADT-defined reset register.
5052 AcpiDisableAllGpes - Disable all available GPEs.
5053 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5054 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5055 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5056 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5057 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5059 Most of the public ACPI hardware-related interfaces have been moved to a
5061 file, components/hardware/hwxface.c
5063 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5064 register lengths within the FADT are now used, and the low level ACPI
5065 register access no longer hardcodes the ACPI register lengths. Given that
5066 there may be some risk in actually trusting the FADT register lengths, a
5068 time option was added to fall back to the default hardcoded lengths if
5070 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5071 option is set to true for now, and a warning is issued if a suspicious
5073 register length is overridden with the default value.
5075 Fixed a reference count issue in NsRepairObject. This problem was
5077 in version 20081031 as part of a fix to repair Buffer objects within
5080 Added semaphore support to the Linux/Unix application OS-services layer
5081 (OSL). ACPICA BZ 448. Lin Ming.
5083 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5085 be implemented in the OSL, or will binary semaphores be used instead.
5087 Example Code and Data Size: These are the sizes for the OS-independent
5088 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5089 debug version of the code includes the debug output trace mechanism and
5091 much larger code and data size.
5094 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5095 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5097 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5098 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5100 2) iASL Compiler/Disassembler and Tools:
5102 iASL: Completed the '-e' option to include additional ACPI tables in
5105 aid with disassembly and External statement generation. ACPICA BZ 742.
5109 iASL: Removed the "named object in while loop" error. The compiler cannot
5110 determine how many times a loop will execute. ACPICA BZ 730.
5112 Disassembler: Implemented support for FADT revision 2 (MS extension).
5116 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5119 ----------------------------------------
5120 31 October 2008. Summary of changes for version 20081031:
5122 1) ACPI CA Core Subsystem:
5124 Restructured the ACPICA header files into public/private. acpi.h now
5126 only the "public" acpica headers. All other acpica headers are "private"
5128 should not be included by acpica users. One new file, accommon.h is used
5130 include the commonly used private headers for acpica code generation.
5132 plans include moving all private headers to a new subdirectory.
5134 Implemented an automatic Buffer->String return value conversion for
5135 predefined ACPI methods. For these methods (such as _BIF), added
5137 conversion for return objects that are required to be a String, but a
5139 was found instead. This can happen when reading string battery data from
5141 operation region, because it used to be difficult to convert the data
5143 buffer to string from within the ASL. Ensures that the host OS is
5145 with a valid null-terminated string. Linux BZ 11822.
5147 Updated the FACS waking vector interfaces. Split
5148 AcpiSetFirmwareWakingVector
5149 into two: one for the 32-bit vector, another for the 64-bit vector. This
5151 required because the host OS must setup the wake much differently for
5153 vector (real vs. protected mode, etc.) and the interface itself should
5156 deciding which vector to use. Also, eliminated the
5157 GetFirmwareWakingVector
5158 interface, as it served no purpose (only the firmware reads the vector,
5160 only writes the vector.) ACPICA BZ 731.
5162 Implemented a mechanism to escape infinite AML While() loops. Added a
5164 counter to force exit from AML While loops if the count becomes too
5166 This can occur in poorly written AML when the hardware does not respond
5167 within a while loop and the loop does not implement a timeout. The
5169 loop count is configurable. A new exception code is returned when a loop
5171 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5173 Optimized the execution of AML While loops. Previously, a control state
5174 object was allocated and freed for each execution of the loop. The
5175 optimization is to simply reuse the control state for each iteration.
5177 speeds up the raw loop execution time by about 5%.
5179 Enhanced the implicit return mechanism. For Windows compatibility, return
5181 implicit integer of value zero for methods that contain no executable
5183 Such methods are seen in the field as stubs (presumably), and can cause
5184 drivers to fail if they expect a return value. Lin Ming.
5186 Allow multiple backslashes as root prefixes in namepaths. In a fully
5187 qualified namepath, allow multiple backslash prefixes. This can happen
5189 is seen in the field) because of the use of a double-backslash in strings
5190 (since backslash is the escape character) causing confusion. ACPICA BZ
5194 Emit a warning if two different FACS or DSDT tables are discovered in the
5195 FADT. Checks if there are two valid but different addresses for the FACS
5197 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5199 Consolidated the method argument count validation code. Merged the code
5201 validates control method argument counts into the predefined validation
5202 module. Eliminates possible multiple warnings for incorrect argument
5205 Implemented ACPICA example code. Includes code for ACPICA initialization,
5206 handler installation, and calling a control method. Available at
5207 source/tools/examples.
5209 Added a global pointer for FACS table to simplify internal FACS access.
5211 the global pointer instead of using AcpiGetTableByIndex for each FACS
5213 This simplifies the code for the Global Lock and the Firmware Waking
5216 Example Code and Data Size: These are the sizes for the OS-independent
5217 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5218 debug version of the code includes the debug output trace mechanism and
5220 much larger code and data size.
5223 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5224 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5226 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5227 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5229 2) iASL Compiler/Disassembler and Tools:
5231 iASL: Improved disassembly of external method calls. Added the -e option
5233 allow the inclusion of additional ACPI tables to help with the
5236 method invocations and the generation of external declarations during the
5237 disassembly. Certain external method invocations cannot be disassembled
5238 properly without the actual declaration of the method. Use the -e option
5240 include the table where the external method(s) are actually declared.
5242 useful for disassembling SSDTs that make method calls back to the master
5243 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5245 -e dsdt.aml ssdt1.aml
5247 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5248 problem where the use of an alias within a namepath would result in a not
5249 found error or cause the compiler to fault. Also now allows forward
5250 references from the Alias operator itself. ACPICA BZ 738.
5252 ----------------------------------------
5253 26 September 2008. Summary of changes for version 20080926:
5255 1) ACPI CA Core Subsystem:
5257 Designed and implemented a mechanism to validate predefined ACPI methods
5259 objects. This code validates the predefined ACPI objects (objects whose
5261 start with underscore) that appear in the namespace, at the time they are
5262 evaluated. The argument count and the type of the returned object are
5263 validated against the ACPI specification. The purpose of this validation
5265 to detect problems with the BIOS-implemented predefined ACPI objects
5267 the results are returned to the ACPI-related drivers. Future enhancements
5269 include actual repair of incorrect return objects where possible. Two new
5270 files are nspredef.c and acpredef.h.
5272 Fixed a fault in the AML parser if a memory allocation fails during the
5274 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5276 Fixed an issue with implicit return compatibility. This change improves
5278 implicit return mechanism to be more compatible with the MS interpreter.
5280 Ming, ACPICA BZ 349.
5282 Implemented support for zero-length buffer-to-string conversions. Allow
5284 length strings during interpreter buffer-to-string conversions. For
5286 during the ToDecimalString and ToHexString operators, as well as implicit
5287 conversions. Fiodor Suietov, ACPICA BZ 585.
5289 Fixed two possible memory leaks in the error exit paths of
5290 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5292 similar in that they use a stack of state objects in order to eliminate
5293 recursion. The stack must be fully unwound and deallocated if an error
5294 occurs. Lin Ming. ACPICA BZ 383.
5296 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5298 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5299 Moore ACPICA BZ 442.
5301 Removed the obsolete version number in module headers. Removed the
5302 "$Revision" number that appeared in each module header. This version
5304 was useful under SourceSafe and CVS, but has no meaning under git. It is
5306 only incorrect, it could also be misleading.
5308 Example Code and Data Size: These are the sizes for the OS-independent
5309 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5310 debug version of the code includes the debug output trace mechanism and
5312 much larger code and data size.
5315 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5316 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5318 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5319 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5321 ----------------------------------------
5322 29 August 2008. Summary of changes for version 20080829:
5324 1) ACPI CA Core Subsystem:
5326 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5327 Reference. Changes include the elimination of cheating on the Object
5329 for the DdbHandle subtype, addition of a reference class field to
5330 differentiate the various reference types (instead of an AML opcode), and
5332 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5334 Reduce an error to a warning for an incorrect method argument count.
5335 Previously aborted with an error if too few arguments were passed to a
5336 control method via the external ACPICA interface. Now issue a warning
5338 and continue. Handles the case where the method inadvertently declares
5340 many arguments, but does not actually use the extra ones. Applies mainly
5342 the predefined methods. Lin Ming. Linux BZ 11032.
5344 Disallow the evaluation of named object types with no intrinsic value.
5346 AE_TYPE for objects that have no value and therefore evaluation is
5348 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5350 these types were allowed, but an exception would be generated at some
5352 during the evaluation. Now, the error is generated up front.
5354 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5355 (nsnames.c). Fixes a leak in the error exit path.
5357 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5359 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5361 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5364 Removed obsolete and/or unused exception codes from the acexcep.h header.
5365 There is the possibility that certain device drivers may be affected if
5367 use any of these exceptions.
5369 The ACPICA documentation has been added to the public git source tree,
5371 acpica/documents. Included are the ACPICA programmer reference, the iASL
5372 compiler reference, and the changes.txt release logfile.
5374 Example Code and Data Size: These are the sizes for the OS-independent
5375 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5376 debug version of the code includes the debug output trace mechanism and
5378 much larger code and data size.
5381 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5382 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5384 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5385 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5387 2) iASL Compiler/Disassembler and Tools:
5389 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5390 defines _SCP with 3 arguments. Previous versions defined it with only 1
5391 argument. iASL now allows both definitions.
5393 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5395 length subtables when disassembling ACPI tables. Also fixed a couple of
5396 errors where a full 16-bit table type field was not extracted from the
5400 acpisrc: Improve comment counting mechanism for generating source code
5401 statistics. Count first and last lines of multi-line comments as
5403 not comment lines. Handle Linux legal header in addition to standard
5407 ----------------------------------------
5409 29 July 2008. Summary of changes for version 20080729:
5411 1) ACPI CA Core Subsystem:
5413 Fix a possible deadlock in the GPE dispatch. Remove call to
5414 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5416 to acquire the GPE lock but can deadlock since the GPE lock is already
5418 at dispatch time. This code was introduced in version 20060831 as a
5420 to Linux BZ 6881 and has since been removed from Linux.
5422 Add a function to dereference returned reference objects. Examines the
5424 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5426 automatically dereferenced in an attempt to return something useful
5428 reference types cannot be converted into an external ACPI_OBJECT.)
5430 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5432 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5433 subtables for the MADT and one new subtable for the SRAT. Includes
5434 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5436 Specification, June 2008.
5438 Additional error checking for pathname utilities. Add error check after
5440 calls to AcpiNsGetPathnameLength. Add status return from
5441 AcpiNsBuildExternalPath and check after all calls. Add parameter
5443 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5445 Return status from the global init function AcpiUtGlobalInitialize. This
5447 used by both the kernel subsystem and the utilities such as iASL
5449 The function could possibly fail when the caches are initialized. Yang
5452 Add a function to decode reference object types to strings. Created for
5453 improved error messages.
5455 Improve object conversion error messages. Better error messages during
5457 conversion from internal to the external ACPI_OBJECT. Used for external
5459 to AcpiEvaluateObject.
5461 Example Code and Data Size: These are the sizes for the OS-independent
5462 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5463 debug version of the code includes the debug output trace mechanism and
5465 much larger code and data size.
5468 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5469 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5471 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5472 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5474 2) iASL Compiler/Disassembler and Tools:
5476 Debugger: fix a possible hang when evaluating non-methods. Fixes a
5478 introduced in version 20080701. If the object being evaluated (via
5480 command) is not a method, the debugger can hang while trying to obtain
5482 existent parameters.
5484 iASL: relax error for using reserved "_T_x" identifiers. These names can
5485 appear in a disassembled ASL file if they were emitted by the original
5486 compiler. Instead of issuing an error or warning and forcing the user to
5487 manually change these names, issue a remark instead.
5489 iASL: error if named object created in while loop. Emit an error if any
5491 object is created within a While loop. If allowed, this code will
5494 run-time error on the second iteration of the loop when an attempt is
5497 create the same named object twice. ACPICA bugzilla 730.
5499 iASL: Support absolute pathnames for include files. Add support for
5501 pathnames within the Include operator. previously, only relative
5505 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
5507 The ACPI spec requires one interrupt minimum. BZ 423
5509 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
5510 Handles the case for the Interrupt Resource Descriptor where
5511 the ResourceSource argument is omitted but ResourceSourceIndex
5512 is present. Now leave room for the Index. BZ 426
5514 iASL: Prevent error message if CondRefOf target does not exist. Fixes
5516 where an error message is emitted if the target does not exist. BZ 516
5518 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
5519 (get ACPI tables on Windows). This was apparently broken in version
5522 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
5524 the EOF happens immediately after the last table in the input file. Print
5525 completion message. Previously, no message was displayed in this case.
5527 ----------------------------------------
5528 01 July 2008. Summary of changes for version 20080701:
5530 0) Git source tree / acpica.org
5532 Fixed a problem where a git-clone from http would not transfer the entire
5535 1) ACPI CA Core Subsystem:
5537 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
5538 enable bit. Now performs a read-change-write of the enable register
5540 of simply writing out the cached enable mask. This will prevent
5542 enabling of GPEs if a rogue GPE is received during initialization (before
5544 handlers are installed.)
5546 Implemented a copy for dynamically loaded tables. Previously, dynamically
5547 loaded tables were simply mapped - but on some machines this memory is
5548 corrupted after suspend. Now copy the table to a local buffer. For the
5549 OpRegion case, added checksum verify. Use the table length from the table
5550 header, not the region length. For the Buffer case, use the table length
5551 also. Dennis Noordsij, Bob Moore. BZ 10734
5553 Fixed a problem where the same ACPI table could not be dynamically loaded
5555 unloaded more than once. Without this change, a table cannot be loaded
5557 once it has been loaded/unloaded one time. The current mechanism does not
5558 unregister a table upon an unload. During a load, if the same table is
5560 this no longer returns an exception. BZ 722
5562 Fixed a problem where the wrong descriptor length was calculated for the
5563 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
5565 are calculated as 12 bytes long, but the actual length in the internal
5566 descriptor is 16 because of the round-up to 8 on the 64-bit build.
5568 by Linn Crosetto. BZ 728
5570 Fixed a possible memory leak in the Unload operator. The DdbHandle
5572 by Load() did not have its reference count decremented during unload,
5574 to a memory leak. Lin Ming. BZ 727
5576 Fixed a possible memory leak when deleting thermal/processor objects. Any
5577 associated notify handlers (and objects) were not being deleted. Fiodor
5580 Fixed the ordering of the ASCII names in the global mutex table to match
5582 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
5584 Vegard Nossum. BZ 726
5586 Enhanced the AcpiGetObjectInfo interface to return the number of required
5587 arguments if the object is a control method. Added this call to the
5589 so the proper number of default arguments are passed to a method. This
5590 prevents a warning when executing methods from AcpiExec.
5592 Added a check for an invalid handle in AcpiGetObjectInfo. Return
5593 AE_BAD_PARAMETER if input handle is invalid. BZ 474
5595 Fixed an extraneous warning from exconfig.c on the 64-bit build.
5597 Example Code and Data Size: These are the sizes for the OS-independent
5598 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5599 debug version of the code includes the debug output trace mechanism and
5601 much larger code and data size.
5604 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5605 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5607 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
5608 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
5610 2) iASL Compiler/Disassembler and Tools:
5612 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
5613 resource descriptor names.
5615 iASL: Detect invalid ASCII characters in input (windows version). Removed
5617 "-CF" flag from the flex compile, enables correct detection of non-ASCII
5618 characters in the input. BZ 441
5620 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
5622 "result of operation not used" warning when the DDB handle returned from
5623 LoadTable is not used. The warning is not needed. BZ 590
5625 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
5628 pass address of table to the AML. Added option to disable OpRegion
5630 to allow creation of an OpRegion with a real address that was passed to
5632 All of this allows testing of the Load and Unload operators from
5635 Debugger: update tables command for unloaded tables. Handle unloaded
5637 and use the standard table header output routine.
5639 ----------------------------------------
5640 09 June 2008. Summary of changes for version 20080609:
5642 1) ACPI CA Core Subsystem:
5644 Implemented a workaround for reversed _PRT entries. A significant number
5646 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
5647 change dynamically detects and repairs this problem. Provides
5649 with MS ACPI. BZ 6859
5651 Simplified the internal ACPI hardware interfaces to eliminate the locking
5652 flag parameter from Register Read/Write. Added a new external interface,
5653 AcpiGetRegisterUnlocked.
5655 Fixed a problem where the invocation of a GPE control method could hang.
5657 was a regression introduced in 20080514. The new method argument count
5658 validation mechanism can enter an infinite loop when a GPE method is
5659 dispatched. Problem fixed by removing the obsolete code that passed GPE
5661 information to the notify handler via the control method parameter
5664 Fixed a problem where the _SST execution status was incorrectly returned
5666 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
5668 20080514. _SST is optional and a NOT_FOUND exception should never be
5671 Fixed a problem where a deleted object could be accessed from within the
5673 parser. This was a regression introduced in version 20080123 as a fix for
5675 Unload operator. Lin Ming. BZ 10669
5677 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
5679 and eliminated the use of a negative index in a loop. Operands are now
5680 displayed in the correct order, not backwards. This also fixes a
5682 introduced in 20080514 on 64-bit systems where the elimination of
5683 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
5686 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
5688 path did not delete a locally allocated structure.
5690 Updated definitions for the DMAR and SRAT tables to synchronize with the
5691 current specifications. Includes disassembler support.
5693 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
5694 loop termination value was used. Loop terminated on iteration early,
5696 one mutex. Linn Crosetto
5698 Example Code and Data Size: These are the sizes for the OS-independent
5699 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5700 debug version of the code includes the debug output trace mechanism and
5702 much larger code and data size.
5705 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5706 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5708 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
5709 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
5711 2) iASL Compiler/Disassembler and Tools:
5713 Disassembler: Implemented support for EisaId() within _CID objects. Now
5714 disassemble integer _CID objects back to EisaId invocations, including
5715 multiple integers within _CID packages. Includes single-step support for
5718 Disassembler: Added support for DMAR and SRAT table definition changes.
5720 ----------------------------------------
5721 14 May 2008. Summary of changes for version 20080514:
5723 1) ACPI CA Core Subsystem:
5725 Fixed a problem where GPEs were enabled too early during the ACPICA
5726 initialization. This could lead to "handler not installed" errors on some
5727 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
5729 ensures that all operation regions and devices throughout the namespace
5731 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
5733 Implemented a change to the enter sleep code. Moved execution of the _GTS
5734 method to just before setting sleep enable bit. The execution was moved
5736 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
5737 immediately before the SLP_EN bit is set, as per the ACPI specification.
5740 Implemented a fix to disable unknown GPEs (2nd version). Now always
5742 the GPE, even if ACPICA thinks that that it is already disabled. It is
5743 possible that the AML or some other code has enabled the GPE unbeknownst
5747 Fixed a problem with the Field operator where zero-length fields would
5749 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
5751 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
5753 Implemented a fix for the Load operator, now load the table at the
5755 root. This reverts a change introduced in version 20071019. The table is
5757 loaded at the namespace root even though this goes against the ACPI
5758 specification. This provides compatibility with other ACPI
5760 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
5763 Fixed a problem where ACPICA would not Load() tables with unusual
5765 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
5766 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
5767 Therefore, signature validation is worthless. Apparently MS ACPI accepts
5769 signatures, ACPICA must be compatible. BZ 10454.
5771 Fixed a possible negative array index in AcpiUtValidateException. Added
5773 fields to the exception string arrays to eliminate a -1 subtraction on
5777 Updated the debug tracking macros to reduce overall code and data size.
5778 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
5779 instead of pointers to static strings. Jan Beulich and Bob Moore.
5781 Implemented argument count checking in control method invocation via
5782 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
5784 many. This applies only to extern programmatic control method execution,
5786 method-to-method calls within the AML. Lin Ming.
5788 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
5790 longer needed, especially with the removal of 16-bit support. It was
5792 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
5795 32/64-bit platforms is required.
5797 Added the C const qualifier for appropriate string constants -- mostly
5798 MODULE_NAME and printf format strings. Jan Beulich.
5800 Example Code and Data Size: These are the sizes for the OS-independent
5801 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5802 debug version of the code includes the debug output trace mechanism and
5804 much larger code and data size.
5807 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5808 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5810 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
5811 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
5813 2) iASL Compiler/Disassembler and Tools:
5815 Implemented ACPI table revision ID validation in the disassembler. Zero
5817 always invalid. For DSDTs, the ID controls the interpreter integer width.
5819 means 32-bit and this is unusual. 2 or greater is 64-bit.
5821 ----------------------------------------
5822 21 March 2008. Summary of changes for version 20080321:
5824 1) ACPI CA Core Subsystem:
5826 Implemented an additional change to the GPE support in order to suppress
5827 spurious or stray GPEs. The AcpiEvDisableGpe function will now
5829 disable incoming GPEs that are neither enabled nor disabled -- meaning
5831 the GPE is unknown to the system. This should prevent future interrupt
5833 from that GPE. BZ 6217 (Zhang Rui)
5835 Fixed a problem where NULL package elements were not returned to the
5836 AcpiEvaluateObject interface correctly. The element was simply ignored
5837 instead of returning a NULL ACPI_OBJECT package element, potentially
5839 a buffer overflow and/or confusing the caller who expected a fixed number
5841 elements. BZ 10132 (Lin Ming, Bob Moore)
5843 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
5845 Qword), Field, BankField, and IndexField operators when invoked from
5847 an executing control method. In this case, these operators created
5849 nodes that were incorrectly left marked as permanent nodes instead of
5850 temporary nodes. This could cause a problem if there is race condition
5851 between an exiting control method and a running namespace walk. (Reported
5855 Fixed a problem where the CreateField and CreateXXXField operators would
5856 incorrectly allow duplicate names (the name of the field) with no
5860 Implemented several changes for Notify handling. Added support for new
5862 values (ACPI 2.0+) and improved the Notify debug output. Notify on
5863 PowerResource objects is no longer allowed, as per the ACPI
5865 (Bob Moore, Zhang Rui)
5867 All Reference Objects returned via the AcpiEvaluateObject interface are
5869 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
5871 NULL objects - either NULL package elements or unresolved named
5874 Fixed a problem where an extraneous debug message was produced for
5876 objects (when debugging enabled). The message "Package List length larger
5877 than NumElements count" is now produced in the correct case, and is now
5879 error message rather than a debug message. Added a debug message for the
5880 opposite case, where NumElements is larger than the Package List (the
5882 will be padded out with NULL elements as per the ACPI spec.)
5884 Implemented several improvements for the output of the ASL "Debug" object
5886 clarify and keep all data for a given object on one output line.
5888 Fixed two size calculation issues with the variable-length Start
5890 resource descriptor.
5892 Example Code and Data Size: These are the sizes for the OS-independent
5893 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5894 debug version of the code includes the debug output trace mechanism and
5896 a much larger code and data size.
5899 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5900 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5902 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
5903 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
5905 2) iASL Compiler/Disassembler and Tools:
5907 Fixed a problem with the use of the Switch operator where execution of
5909 containing method by multiple concurrent threads could cause an
5910 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
5911 actual Switch opcode, it must be simulated with local named temporary
5912 variables and if/else pairs. The solution chosen was to mark any method
5914 uses Switch as Serialized, thus preventing multiple thread entries. BZ
5917 ----------------------------------------
5918 13 February 2008. Summary of changes for version 20080213:
5920 1) ACPI CA Core Subsystem:
5922 Implemented another MS compatibility design change for GPE/Notify
5924 GPEs are now cleared/enabled asynchronously to allow all pending notifies
5926 complete first. It is expected that the OSL will queue the enable request
5927 behind all pending notify requests (may require changes to the local host
5929 in AcpiOsExecute). Alexey Starikovskiy.
5931 Fixed a problem where buffer and package objects passed as arguments to a
5932 control method via the external AcpiEvaluateObject interface could cause
5934 AE_AML_INTERNAL exception depending on the order and type of operators
5935 executed by the target control method.
5937 Fixed a problem where resource descriptor size optimization could cause a
5938 problem when a _CRS resource template is passed to a _SRS method. The
5940 resource template must use the same descriptors (with the same size) as
5941 returned from _CRS. This change affects the following resource
5943 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
5946 Fixed a problem where a CopyObject to RegionField, BankField, and
5948 objects did not perform an implicit conversion as it should. These types
5950 retain their initial type permanently as per the ACPI specification.
5952 a CopyObject to all other object types should not perform an implicit
5953 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
5955 Fixed a problem with the AcpiGetDevices interface where the mechanism to
5956 match device CIDs did not examine the entire list of available CIDs, but
5957 instead aborted on the first non-matching CID. Andrew Patterson.
5959 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
5961 inadvertently changed to return a 16-bit value instead of a 32-bit value,
5962 truncating the upper dword of a 64-bit value. This macro is only used to
5963 display debug output, so no incorrect calculations were made. Also,
5964 reimplemented the macro so that a 64-bit shift is not performed by
5965 inefficient compilers.
5967 Added missing va_end statements that should correspond with each va_start
5970 Example Code and Data Size: These are the sizes for the OS-independent
5971 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5972 debug version of the code includes the debug output trace mechanism and
5974 a much larger code and data size.
5977 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
5978 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
5980 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
5981 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
5983 2) iASL Compiler/Disassembler and Tools:
5985 Implemented full disassembler support for the following new ACPI tables:
5986 BERT, EINJ, and ERST. Implemented partial disassembler support for the
5987 complicated HEST table. These tables support the Windows Hardware Error
5988 Architecture (WHEA).
5990 ----------------------------------------
5991 23 January 2008. Summary of changes for version 20080123:
5993 1) ACPI CA Core Subsystem:
5995 Added the 2008 copyright to all module headers and signons. This affects
5996 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5997 the tools/utilities.
5999 Fixed a problem with the SizeOf operator when used with Package and
6001 objects. These objects have deferred execution for some arguments, and
6003 execution is now completed before the SizeOf is executed. This problem
6005 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6009 Implemented an enhancement to the interpreter "slack mode". In the
6012 an explicit return or an implicitly returned object from the last
6014 opcode, a control method will now implicitly return an integer of value 0
6016 Microsoft compatibility. (Lin Ming) BZ 392
6018 Fixed a problem with the Load operator where an exception was not
6021 the case where the table is already loaded. (Lin Ming) BZ 463
6023 Implemented support for the use of DDBHandles as an Indexed Reference, as
6025 the ACPI spec. (Lin Ming) BZ 486
6027 Implemented support for UserTerm (Method invocation) for the Unload
6029 as per the ACPI spec. (Lin Ming) BZ 580
6031 Fixed a problem with the LoadTable operator where the OemId and
6033 input strings could cause unexpected failures if they were shorter than
6035 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6037 Implemented support for UserTerm (Method invocation) for the Unload
6039 as per the ACPI spec. (Lin Ming) BZ 580
6041 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6043 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6045 Example Code and Data Size: These are the sizes for the OS-independent
6046 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6047 debug version of the code includes the debug output trace mechanism and
6049 a much larger code and data size.
6052 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6053 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6055 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6056 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6058 2) iASL Compiler/Disassembler and Tools:
6060 Implemented support in the disassembler for checksum validation on
6062 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6064 header dump at the start of the disassembly.
6066 Implemented additional debugging information in the namespace listing
6068 created during compilation. In addition to the namespace hierarchy, the
6070 pathname to each namespace object is displayed.
6072 Fixed a problem with the disassembler where invalid ACPI tables could
6074 faults or infinite loops.
6076 Fixed an unexpected parse error when using the optional "parameter types"
6077 list in a control method declaration. (Lin Ming) BZ 397
6079 Fixed a problem where two External declarations with the same name did
6081 cause an error (Lin Ming) BZ 509
6083 Implemented support for full TermArgs (adding Argx, Localx and method
6084 invocation) for the ParameterData parameter to the LoadTable operator.
6088 ----------------------------------------
6089 19 December 2007. Summary of changes for version 20071219:
6091 1) ACPI CA Core Subsystem:
6093 Implemented full support for deferred execution for the TermArg string
6094 arguments for DataTableRegion. This enables forward references and full
6095 operand resolution for the three string arguments. Similar to
6097 deferred argument execution.) Lin Ming. BZ 430
6099 Implemented full argument resolution support for the BankValue argument
6101 BankField. Previously, only constants were supported, now any TermArg may
6103 used. Lin Ming BZ 387, 393
6105 Fixed a problem with AcpiGetDevices where the search of a branch of the
6106 device tree could be terminated prematurely. In accordance with the ACPI
6107 specification, the search down the current branch is terminated if a
6109 is both not present and not functional (instead of just not present.)
6113 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6115 the underlying AML code changed the GPE enable registers. Now, any
6117 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6119 instead of simply ignored. Rui Zhang.
6121 Fixed a problem with Index Fields where the Index register was
6123 limited to a maximum of 32 bits. Now any size may be used.
6125 Fixed a couple memory leaks associated with "implicit return" objects
6127 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6129 Example Code and Data Size: These are the sizes for the OS-independent
6130 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6131 debug version of the code includes the debug output trace mechanism and
6133 a much larger code and data size.
6136 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6137 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6139 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6140 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6142 ----------------------------------------
6143 14 November 2007. Summary of changes for version 20071114:
6145 1) ACPI CA Core Subsystem:
6147 Implemented event counters for each of the Fixed Events, the ACPI SCI
6148 (interrupt) itself, and control methods executed. Named
6149 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6151 should be useful for debugging and statistics.
6153 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6154 contents of the various event counters. Returns the current values for
6155 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6156 AcpiMethodCount. The interface can be expanded in the future if new
6158 are added. Device drivers should use this interface rather than access
6162 Fixed a problem with the FromBCD and ToBCD operators. With some
6164 the ShortDivide function worked incorrectly, causing problems with the
6166 functions with large input values. A truncation from 64-bit to 32-bit
6167 inadvertently occurred. Internal BZ 435. Lin Ming
6169 Fixed a problem with Index references passed as method arguments.
6171 passed as arguments to control methods were dereferenced immediately
6173 control was passed to the called method). The references are now
6175 passed directly to the called method. BZ 5389. Lin Ming
6177 Fixed a problem with CopyObject used in conjunction with the Index
6179 The reference was incorrectly dereferenced before the copy. The reference
6181 now correctly copied. BZ 5391. Lin Ming
6183 Fixed a problem with Control Method references within Package objects.
6185 references are now correctly generated. This completes the package
6186 construction overhaul that began in version 20071019.
6188 Example Code and Data Size: These are the sizes for the OS-independent
6189 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6190 debug version of the code includes the debug output trace mechanism and
6192 a much larger code and data size.
6195 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6196 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6198 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6199 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6202 2) iASL Compiler/Disassembler and Tools:
6204 The AcpiExec utility now installs handlers for all of the predefined
6205 Operation Region types. New types supported are: PCI_Config, CMOS, and
6208 Fixed a problem with the 64-bit version of AcpiExec where the extended
6210 bit) address fields for the DSDT and FACS within the FADT were not being
6211 used, causing truncation of the upper 32-bits of these addresses. Lin
6215 ----------------------------------------
6216 19 October 2007. Summary of changes for version 20071019:
6218 1) ACPI CA Core Subsystem:
6220 Fixed a problem with the Alias operator when the target of the alias is a
6221 named ASL operator that opens a new scope -- Scope, Device,
6223 Processor, and ThermalZone. In these cases, any children of the original
6224 operator could not be accessed via the alias, potentially causing
6226 AE_NOT_FOUND exceptions. (BZ 9067)
6228 Fixed a problem with the Package operator where all named references were
6229 created as object references and left otherwise unresolved. According to
6231 ACPI specification, a Package can only contain Data Objects or references
6233 control methods. The implication is that named references to Data Objects
6234 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6235 immediately upon package creation. This is the approach taken with this
6236 change. References to all other named objects (Methods, Devices, Scopes,
6237 etc.) are all now properly created as reference objects. (BZ 5328)
6239 Reverted a change to Notify handling that was introduced in version
6240 20070508. This version changed the Notify handling from asynchronous to
6241 fully synchronous (Device driver Notify handling with respect to the
6243 ASL operator). It was found that this change caused more problems than it
6244 solved and was removed by most users.
6246 Fixed a problem with the Increment and Decrement operators where the type
6248 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6251 Fixed a problem with the Load and LoadTable operators where the table
6252 location within the namespace was ignored. Instead, the table was always
6253 loaded into the root or current scope. Lin Ming.
6255 Fixed a problem with the Load operator when loading a table from a buffer
6256 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6258 Fixed a problem with the Debug object where a store of a DdbHandle
6260 object to the Debug object could cause a fault.
6262 Added a table checksum verification for the Load operator, in the case
6264 the load is from a buffer. (BZ 578).
6266 Implemented additional parameter validation for the LoadTable operator.
6268 length of the input strings SignatureString, OemIdString, and OemTableId
6270 now checked for maximum lengths. (BZ 582) Lin Ming.
6272 Example Code and Data Size: These are the sizes for the OS-independent
6273 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6274 debug version of the code includes the debug output trace mechanism and
6276 a much larger code and data size.
6279 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6280 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6282 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6283 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6286 2) iASL Compiler/Disassembler:
6288 Fixed a problem where if a single file was specified and the file did not
6289 exist, no error message was emitted. (Introduced with wildcard support in
6292 ----------------------------------------
6293 19 September 2007. Summary of changes for version 20070919:
6295 1) ACPI CA Core Subsystem:
6297 Designed and implemented new external interfaces to install and remove
6298 handlers for ACPI table-related events. Current events that are defined
6300 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6301 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6302 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6304 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6305 (acpi_serialized option on Linux) could cause some systems to hang during
6306 initialization. (Bob Moore) BZ 8171
6308 Fixed a problem where objects of certain types (Device, ThermalZone,
6309 Processor, PowerResource) can be not found if they are declared and
6310 referenced from within the same control method (Lin Ming) BZ 341
6312 Example Code and Data Size: These are the sizes for the OS-independent
6313 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6314 debug version of the code includes the debug output trace mechanism and
6316 a much larger code and data size.
6319 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6320 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6322 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6323 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6326 2) iASL Compiler/Disassembler:
6328 Implemented support to allow multiple files to be compiled/disassembled
6331 single invocation. This includes command line wildcard support for both
6333 Windows and Unix versions of the compiler. This feature simplifies the
6334 disassembly and compilation of multiple ACPI tables in a single
6337 ----------------------------------------
6338 08 May 2007. Summary of changes for version 20070508:
6340 1) ACPI CA Core Subsystem:
6342 Implemented a Microsoft compatibility design change for the handling of
6344 Notify AML operator. Previously, notify handlers were dispatched and
6345 executed completely asynchronously in a deferred thread. The new design
6346 still executes the notify handlers in a different thread, but the
6348 thread that executed the Notify() now waits at a synchronization point
6350 the notify handler to complete. Some machines depend on a synchronous
6352 operator in order to operate correctly.
6354 Implemented support to allow Package objects to be passed as method
6355 arguments to the external AcpiEvaluateObject interface. Previously, this
6356 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6357 implemented since there were no reserved control methods that required it
6360 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6362 contained invalid non-zero values in reserved fields could cause later
6363 failures because these fields have meaning in later revisions of the
6365 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6367 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6369 Fixed a problem where the Global Lock handle was not properly updated if
6371 thread that acquired the Global Lock via executing AML code then
6373 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6377 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6378 could be corrupted if the interrupt being removed was at the head of the
6379 list. Reported by Linn Crosetto.
6381 Example Code and Data Size: These are the sizes for the OS-independent
6382 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6383 debug version of the code includes the debug output trace mechanism and
6385 a much larger code and data size.
6388 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6389 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6391 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6392 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6394 ----------------------------------------
6395 20 March 2007. Summary of changes for version 20070320:
6397 1) ACPI CA Core Subsystem:
6399 Implemented a change to the order of interpretation and evaluation of AML
6400 operand objects within the AML interpreter. The interpreter now evaluates
6401 operands in the order that they appear in the AML stream (and the
6402 corresponding ASL code), instead of in the reverse order (after the
6404 operand list has been parsed). The previous behavior caused several
6406 incompatibilities with the Microsoft AML interpreter as well as being
6407 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6409 Implemented a change to the ACPI Global Lock support. All interfaces to
6411 global lock now allow the same thread to acquire the lock multiple times.
6412 This affects the AcpiAcquireGlobalLock external interface to the global
6414 as well as the internal use of the global lock to support AML fields -- a
6415 control method that is holding the global lock can now simultaneously
6417 AML fields that require global lock protection. Previously, in both
6419 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6421 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6422 Controller. There is no change to the behavior of the AML Acquire
6424 as this can already be used to acquire a mutex multiple times by the same
6425 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6427 Fixed a problem where invalid objects could be referenced in the AML
6428 Interpreter after error conditions. During operand evaluation, ensure
6430 the internal "Return Object" field is cleared on error and only valid
6431 pointers are stored there. Caused occasional access to deleted objects
6433 resulted in "large reference count" warning messages. Valery Podrezov.
6435 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6437 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6440 Fixed an internal problem with the handling of result objects on the
6441 interpreter result stack. BZ 7872. Valery Podrezov.
6443 Removed obsolete code that handled the case where AML_NAME_OP is the
6445 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6446 7874. Valery Podrezov.
6448 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6451 remnant from the previously discontinued 16-bit support.
6453 Example Code and Data Size: These are the sizes for the OS-independent
6454 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6455 debug version of the code includes the debug output trace mechanism and
6457 a much larger code and data size.
6460 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6461 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6463 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6464 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6466 ----------------------------------------
6467 26 January 2007. Summary of changes for version 20070126:
6469 1) ACPI CA Core Subsystem:
6471 Added the 2007 copyright to all module headers and signons. This affects
6472 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6475 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
6476 during a table load. A bad pointer was passed in the case where the DSDT
6478 overridden, causing a fault in this case.
6480 Example Code and Data Size: These are the sizes for the OS-independent
6481 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6482 debug version of the code includes the debug output trace mechanism and
6484 a much larger code and data size.
6487 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6488 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6490 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6491 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6493 ----------------------------------------
6494 15 December 2006. Summary of changes for version 20061215:
6496 1) ACPI CA Core Subsystem:
6498 Support for 16-bit ACPICA has been completely removed since it is no
6500 necessary and it clutters the code. All 16-bit macros, types, and
6501 conditional compiles have been removed, cleaning up and simplifying the
6503 across the entire subsystem. DOS support is no longer needed since the
6504 bootable Linux firmware kit is now available.
6506 The handler for the Global Lock is now removed during AcpiTerminate to
6507 enable a clean subsystem restart, via the implementation of the
6508 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
6511 Implemented enhancements to the multithreading support within the
6513 to enable improved multithreading debugging and evaluation of the
6517 Debugger: Enhanced the Statistics/Memory command to emit the total
6519 memory used during the execution, as well as the maximum memory consumed
6521 each of the various object types. (Valery Podrezov)
6523 Example Code and Data Size: These are the sizes for the OS-independent
6524 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6525 debug version of the code includes the debug output trace mechanism and
6527 a much larger code and data size.
6530 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6531 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6533 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
6534 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
6537 2) iASL Compiler/Disassembler and Tools:
6539 AcpiExec: Implemented a new option (-m) to display full memory use
6540 statistics upon subsystem/program termination. (Valery Podrezov)
6542 ----------------------------------------
6543 09 November 2006. Summary of changes for version 20061109:
6545 1) ACPI CA Core Subsystem:
6547 Optimized the Load ASL operator in the case where the source operand is
6549 operation region. Simply map the operation region memory, instead of
6550 performing a bytewise read. (Region must be of type SystemMemory, see
6553 Fixed the Load ASL operator for the case where the source operand is a
6554 region field. A buffer object is also allowed as the source operand. BZ
6557 Fixed a problem where the Load ASL operator allowed the source operand to
6559 an operation region of any type. It is now restricted to regions of type
6560 SystemMemory, as per the ACPI specification. BZ 481
6562 Additional cleanup and optimizations for the new Table Manager code.
6564 AcpiEnable will now fail if all of the required ACPI tables are not
6566 (FADT, FACS, DSDT). BZ 477
6568 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
6570 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
6571 manually optimized to be aligned and will not work if it is byte-packed.
6573 Example Code and Data Size: These are the sizes for the OS-independent
6574 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6575 debug version of the code includes the debug output trace mechanism and
6577 a much larger code and data size.
6580 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6581 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6583 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
6584 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
6587 2) iASL Compiler/Disassembler and Tools:
6589 Fixed a problem where the presence of the _OSI predefined control method
6590 within complex expressions could cause an internal compiler error.
6592 AcpiExec: Implemented full region support for multiple address spaces.
6593 SpaceId is now part of the REGION object. BZ 429
6595 ----------------------------------------
6596 11 October 2006. Summary of changes for version 20061011:
6598 1) ACPI CA Core Subsystem:
6600 Completed an AML interpreter performance enhancement for control method
6601 execution. Previously a 2-pass parse/execution, control methods are now
6602 completely parsed and executed in a single pass. This improves overall
6603 interpreter performance by ~25%, reduces code size, and reduces CPU stack
6604 use. (Valery Podrezov + interpreter changes in version 20051202 that
6605 eliminated namespace loading during the pass one parse.)
6607 Implemented _CID support for PCI Root Bridge detection. If the _HID does
6609 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
6611 obtained and also checked for an ID match.
6613 Implemented additional support for the PCI _ADR execution: upsearch until
6615 device scope is found before executing _ADR. This allows PCI_Config
6616 operation regions to be declared locally within control methods
6620 Fixed a problem with a possible race condition between threads executing
6621 AcpiWalkNamespace and the AML interpreter. This condition was removed by
6622 modifying AcpiWalkNamespace to (by default) ignore all temporary
6624 entries created during any concurrent control method execution. An
6625 additional namespace race condition is known to exist between
6626 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
6629 Restructured the AML ParseLoop function, breaking it into several
6630 subfunctions in order to reduce CPU stack use and improve
6634 AcpiGetHandle: Fix for parameter validation to detect invalid
6636 of prefix handle and pathname. BZ 478
6638 Example Code and Data Size: These are the sizes for the OS-independent
6639 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6640 debug version of the code includes the debug output trace mechanism and
6642 a much larger code and data size.
6645 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6646 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6648 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
6649 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
6651 2) iASL Compiler/Disassembler and Tools:
6653 Ported the -g option (get local ACPI tables) to the new ACPICA Table
6655 to restore original behavior.
6657 ----------------------------------------
6658 27 September 2006. Summary of changes for version 20060927:
6660 1) ACPI CA Core Subsystem:
6662 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
6663 These functions now use a spinlock for mutual exclusion and the interrupt
6664 level indication flag is not needed.
6666 Fixed a problem with the Global Lock where the lock could appear to be
6667 obtained before it is actually obtained. The global lock semaphore was
6668 inadvertently created with one unit instead of zero units. (BZ 464)
6672 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
6674 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
6676 Example Code and Data Size: These are the sizes for the OS-independent
6677 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6678 debug version of the code includes the debug output trace mechanism and
6680 a much larger code and data size.
6683 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6684 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6686 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6687 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
6690 2) iASL Compiler/Disassembler and Tools:
6692 Fixed a compilation problem with the pre-defined Resource Descriptor
6694 names where an "object does not exist" error could be incorrectly
6696 if the parent ResourceTemplate pathname places the template within a
6697 different namespace scope than the current scope. (BZ 7212)
6699 Fixed a problem where the compiler could hang after syntax errors
6701 in an ElseIf construct. (BZ 453)
6703 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
6704 operator. An incorrect output filename was produced when this parameter
6706 a null string (""). Now, the original input filename is used as the AML
6707 output filename, with an ".aml" extension.
6709 Implemented a generic batch command mode for the AcpiExec utility
6711 any AML debugger command) (Valery Podrezov).
6713 ----------------------------------------
6714 12 September 2006. Summary of changes for version 20060912:
6716 1) ACPI CA Core Subsystem:
6718 Enhanced the implementation of the "serialized mode" of the interpreter
6719 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
6720 specified, instead of creating a serialization semaphore per control
6722 the interpreter lock is simply no longer released before a blocking
6723 operation during control method execution. This effectively makes the AML
6724 Interpreter single-threaded. The overhead of a semaphore per-method is
6727 Fixed a regression where an error was no longer emitted if a control
6729 attempts to create 2 objects of the same name. This once again returns
6730 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
6732 will dynamically serialize the control method to possible prevent future
6735 Integrated a fix for a problem with PCI Express HID detection in the PCI
6736 Config Space setup procedure. (BZ 7145)
6738 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
6739 AcpiHwInitialize function - the FADT registers are now validated when the
6742 Added two new warnings during FADT verification - 1) if the FADT is
6744 than the largest known FADT version, and 2) if there is a mismatch
6747 32-bit block address and the 64-bit X counterpart (when both are non-
6750 Example Code and Data Size: These are the sizes for the OS-independent
6751 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6752 debug version of the code includes the debug output trace mechanism and
6754 a much larger code and data size.
6757 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6758 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6760 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
6761 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
6764 2) iASL Compiler/Disassembler and Tools:
6766 Fixed a problem with the implementation of the Switch() operator where
6768 temporary variable was declared too close to the actual Switch, instead
6770 at method level. This could cause a problem if the Switch() operator is
6771 within a while loop, causing an error on the second iteration. (BZ 460)
6773 Disassembler - fix for error emitted for unknown type for target of scope
6774 operator. Now, ignore it and continue.
6776 Disassembly of an FADT now verifies the input FADT and reports any errors
6777 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
6779 Disassembly of raw data buffers with byte initialization data now
6781 each output line with the current buffer offset.
6783 Disassembly of ASF! table now includes all variable-length data fields at
6784 the end of some of the subtables.
6786 The disassembler now emits a comment if a buffer appears to be a
6787 ResourceTemplate, but cannot be disassembled as such because the EndTag
6789 not appear at the very end of the buffer.
6791 AcpiExec - Added the "-t" command line option to enable the serialized
6793 of the AML interpreter.
6795 ----------------------------------------
6796 31 August 2006. Summary of changes for version 20060831:
6798 1) ACPI CA Core Subsystem:
6800 Miscellaneous fixes for the Table Manager:
6801 - Correctly initialize internal common FADT for all 64-bit "X" fields
6802 - Fixed a couple table mapping issues during table load
6803 - Fixed a couple alignment issues for IA64
6804 - Initialize input array to zero in AcpiInitializeTables
6805 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
6808 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
6810 immediately disabled to prevent the waking GPE from firing again and to
6811 prevent other wake GPEs from interrupting the wake process.
6813 Added the AcpiGpeCount global that tracks the number of processed GPEs,
6815 be used for debugging systems with a large number of ACPI interrupts.
6817 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
6818 both the ACPICA headers and the disassembler.
6820 Example Code and Data Size: These are the sizes for the OS-independent
6821 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6822 debug version of the code includes the debug output trace mechanism and
6824 a much larger code and data size.
6827 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6828 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6830 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
6831 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
6834 2) iASL Compiler/Disassembler and Tools:
6836 Disassembler support for the DMAR ACPI table.
6838 ----------------------------------------
6839 23 August 2006. Summary of changes for version 20060823:
6841 1) ACPI CA Core Subsystem:
6843 The Table Manager component has been completely redesigned and
6844 reimplemented. The new design is much simpler, and reduces the overall
6846 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
6848 now possible to obtain the ACPI tables very early during kernel
6849 initialization, even before dynamic memory management is initialized.
6850 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
6852 Obsolete ACPICA interfaces:
6854 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
6857 - AcpiLoadTable: Not needed.
6858 - AcpiUnloadTable: Not needed.
6860 New ACPICA interfaces:
6862 - AcpiInitializeTables: Must be called before the table manager can be
6864 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
6865 allocated memory after it becomes available.
6866 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
6870 Other ACPICA changes:
6872 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
6874 AcpiOsUnmapMemory to free this mapping.
6875 - AcpiGetTable returns the actual mapped table. The mapping is managed
6876 internally and must not be deleted by the caller. Use of this interface
6877 causes no additional dynamic memory allocation.
6878 - AcpiFindRootPointer: Support for physical addressing has been
6880 it appeared to be unused.
6881 - The interface to AcpiOsMapMemory has changed to be consistent with the
6882 other allocation interfaces.
6883 - The interface to AcpiOsGetRootPointer has changed to eliminate
6886 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
6888 bit platforms. Was previously 64 bits on all platforms.
6889 - The interface to the ACPI Global Lock acquire/release macros have
6891 slightly since ACPICA no longer keeps a local copy of the FACS with a
6892 constructed pointer to the actual global lock.
6894 Porting to the new table manager:
6896 - AcpiInitializeTables: Must be called once, and can be called anytime
6897 during the OS initialization process. It allows the host to specify an
6899 of memory to be used to store the internal version of the RSDT/XSDT (root
6900 table). This allows the host to access ACPI tables before memory
6902 is initialized and running.
6903 - AcpiReallocateRootTable: Can be called after memory management is
6905 to copy the root table to a dynamically allocated array, freeing up the
6906 scratch memory specified in the call to AcpiInitializeTables.
6907 - AcpiSubsystemInitialize: This existing interface is independent of the
6908 Table Manager, and does not have to be called before the Table Manager
6910 be used, it only must be called before the rest of ACPICA can be used.
6911 - ACPI Tables: Some changes have been made to the names and structure of
6913 actbl.h and actbl1.h header files and may require changes to existing
6915 For example, bitfields have been completely removed because of their lack
6917 portability across C compilers.
6918 - Update interfaces to the Global Lock acquire/release macros if local
6919 versions are used. (see acwin.h)
6921 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
6925 Example Code and Data Size: These are the sizes for the OS-independent
6926 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6927 debug version of the code includes the debug output trace mechanism and
6929 a much larger code and data size.
6932 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
6933 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
6935 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
6936 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
6939 2) iASL Compiler/Disassembler and Tools:
6941 No changes for this release.
6943 ----------------------------------------
6944 21 July 2006. Summary of changes for version 20060721:
6946 1) ACPI CA Core Subsystem:
6948 The full source code for the ASL test suite used to validate the iASL
6949 compiler and the ACPICA core subsystem is being released with the ACPICA
6950 source for the first time. The source is contained in a separate package
6952 consists of over 1100 files that exercise all ASL/AML operators. The
6954 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
6958 Completed a new design and implementation for support of the ACPI Global
6959 Lock. On the OS side, the global lock is now treated as a standard AML
6960 mutex. Previously, multiple OS threads could "acquire" the global lock
6961 simultaneously. However, this could cause the BIOS to be starved out of
6963 lock - especially in cases such as the Embedded Controller driver where
6964 there is a tight coupling between the OS and the BIOS.
6966 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
6967 The Global Lock interrupt handler no longer queues the execution of a
6968 separate thread to signal the global lock semaphore. Instead, the
6970 is signaled directly from the interrupt handler.
6972 Implemented support within the AML interpreter for package objects that
6973 contain a larger AML length (package list length) than the package
6975 count. In this case, the length of the package is truncated to match the
6976 package element count. Some BIOS code apparently modifies the package
6978 on the fly, and this change supports this behavior. Provides
6980 with the MS AML interpreter. (With assistance from Fiodor Suietov)
6982 Implemented a temporary fix for the BankValue parameter of a Bank Field
6984 support all constant values, now including the Zero and One opcodes.
6985 Evaluation of this parameter must eventually be converted to a full
6987 evaluation. A not-implemented error is now returned (temporarily) for
6989 constant values for this parameter.
6991 Fixed problem reports (Fiodor Suietov) integrated:
6992 - Fix for premature object deletion after CopyObject on Operation Region
6996 Example Code and Data Size: These are the sizes for the OS-independent
6997 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6998 debug version of the code includes the debug output trace mechanism and
7000 a much larger code and data size.
7003 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7004 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
7006 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7007 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7010 2) iASL Compiler/Disassembler and Tools:
7012 No changes for this release.
7014 ----------------------------------------
7015 07 July 2006. Summary of changes for version 20060707:
7017 1) ACPI CA Core Subsystem:
7019 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7020 that do not allow the initialization of address pointers within packed
7021 structures - even though the hardware itself may support misaligned
7022 transfers. Some of the debug data structures are packed by default to
7025 Added an error message for the case where AcpiOsGetThreadId() returns
7027 A non-zero value is required by the core ACPICA code to ensure the proper
7028 operation of AML mutexes and recursive control methods.
7030 The DSDT is now the only ACPI table that determines whether the AML
7031 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7033 the hooks for per-table 32/64 switching have been removed from the code.
7035 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7037 Fixed a possible leak of an OwnerID in the error path of
7038 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7039 deletion to a single place in AcpiTbUninstallTable to correct possible
7041 when using the AcpiTbDeleteTablesByType interface (with assistance from
7044 Fixed a problem with Serialized control methods where the semaphore
7045 associated with the method could be over-signaled after multiple method
7048 Fixed two issues with the locking of the internal namespace data
7050 Both the Unload() operator and AcpiUnloadTable interface now lock the
7051 namespace during the namespace deletion associated with the table unload
7052 (with assistance from Linn Crosetto.)
7054 Fixed problem reports (Valery Podrezov) integrated:
7055 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7057 Fixed problem reports (Fiodor Suietov) integrated:
7058 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7059 - On Address Space handler deletion, needless deactivation call (BZ 374)
7060 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7062 - Possible memory leak, Notify sub-objects of Processor, Power,
7065 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7066 - Minimum Length of RSDT should be validated (BZ 379)
7067 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7069 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7073 Example Code and Data Size: These are the sizes for the OS-independent
7074 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7075 debug version of the code includes the debug output trace mechanism and
7077 a much larger code and data size.
7080 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7081 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7083 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7084 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7087 2) iASL Compiler/Disassembler and Tools:
7089 Fixed problem reports:
7090 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7093 ----------------------------------------
7094 23 June 2006. Summary of changes for version 20060623:
7096 1) ACPI CA Core Subsystem:
7098 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7099 allows the type to be customized to the host OS for improved efficiency
7100 (since a spinlock is usually a very small object.)
7102 Implemented support for "ignored" bits in the ACPI registers. According
7104 the ACPI specification, these bits should be preserved when writing the
7105 registers via a read/modify/write cycle. There are 3 bits preserved in
7107 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7109 Implemented the initial deployment of new OSL mutex interfaces. Since
7111 host operating systems have separate mutex and semaphore objects, this
7112 feature was requested. The base code now uses mutexes (and the new mutex
7113 interfaces) wherever a binary semaphore was used previously. However, for
7114 the current release, the mutex interfaces are defined as macros to map
7116 to the existing semaphore interfaces. Therefore, no OSL changes are
7118 at this time. (See acpiosxf.h)
7120 Fixed several problems with the support for the control method SyncLevel
7121 parameter. The SyncLevel now works according to the ACPI specification
7123 in concert with the Mutex SyncLevel parameter, since the current
7125 is a property of the executing thread. Mutual exclusion for control
7127 is now implemented with a mutex instead of a semaphore.
7129 Fixed three instances of the use of the C shift operator in the bitfield
7130 support code (exfldio.c) to avoid the use of a shift value larger than
7132 target data width. The behavior of C compilers is undefined in this case
7134 can cause unpredictable results, and therefore the case must be detected
7136 avoided. (Fiodor Suietov)
7138 Added an info message whenever an SSDT or OEM table is loaded dynamically
7139 via the Load() or LoadTable() ASL operators. This should improve
7141 capability since it will show exactly what tables have been loaded
7143 the tables present in the RSDT/XSDT.)
7145 Example Code and Data Size: These are the sizes for the OS-independent
7146 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7147 debug version of the code includes the debug output trace mechanism and
7149 a much larger code and data size.
7152 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7153 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7155 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7156 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7159 2) iASL Compiler/Disassembler and Tools:
7161 No changes for this release.
7163 ----------------------------------------
7164 08 June 2006. Summary of changes for version 20060608:
7166 1) ACPI CA Core Subsystem:
7168 Converted the locking mutex used for the ACPI hardware to a spinlock.
7170 change should eliminate all problems caused by attempting to acquire a
7171 semaphore at interrupt level, and it means that all ACPICA external
7172 interfaces that directly access the ACPI hardware can be safely called
7174 interrupt level. OSL code that implements the semaphore interfaces should
7176 able to eliminate any workarounds for being called at interrupt level.
7178 Fixed a regression introduced in 20060526 where the ACPI device
7179 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7181 did not have an optional _INI method.
7183 Fixed an IndexField issue where a write to the Data Register should be
7184 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7188 Fixed problem reports (Valery Podrezov) integrated:
7189 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7191 Fixed problem reports (Fiodor Suietov) integrated:
7192 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7194 Removed four global mutexes that were obsolete and were no longer being
7197 Example Code and Data Size: These are the sizes for the OS-independent
7198 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7199 debug version of the code includes the debug output trace mechanism and
7201 a much larger code and data size.
7204 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7205 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7207 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7208 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7211 2) iASL Compiler/Disassembler and Tools:
7213 Fixed a fault when using -g option (get tables from registry) on Windows
7216 Fixed problem reports integrated:
7217 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7218 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7220 - Global table revision override (-r) is ignored (BZ 413)
7222 ----------------------------------------
7223 26 May 2006. Summary of changes for version 20060526:
7225 1) ACPI CA Core Subsystem:
7227 Restructured, flattened, and simplified the internal interfaces for
7228 namespace object evaluation - resulting in smaller code, less CPU stack
7230 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7232 Fixed a problem with the CopyObject operator where the first parameter
7234 not typed correctly for the parser, interpreter, compiler, and
7236 Caused various errors and unexpected behavior.
7238 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7239 produced incorrect results with some C compilers. Since the behavior of C
7240 compilers when the shift value is larger than the datatype width is
7241 apparently not well defined, the interpreter now detects this condition
7243 simply returns zero as expected in all such cases. (BZ 395)
7245 Fixed problem reports (Valery Podrezov) integrated:
7246 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7247 - Allow interpreter to handle nested method declarations (BZ 5361)
7249 Fixed problem reports (Fiodor Suietov) integrated:
7250 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7252 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7254 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7255 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7256 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7257 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7258 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7259 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7260 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7262 - Status of the Global Initialization Handler call not used (BZ 366)
7263 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7265 Example Code and Data Size: These are the sizes for the OS-independent
7266 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7267 debug version of the code includes the debug output trace mechanism and
7269 a much larger code and data size.
7272 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7273 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7275 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7276 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7279 2) iASL Compiler/Disassembler and Tools:
7281 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7282 namespace identifiers with no collision with existing resource descriptor
7283 macro names. This provides compatibility with other ASL compilers and is
7284 most useful for disassembly/recompilation of existing tables without
7286 errors. (With assistance from Thomas Renninger)
7288 Disassembler: fixed an incorrect disassembly problem with the
7289 DataTableRegion and CopyObject operators. Fixed a possible fault during
7290 disassembly of some Alias operators.
7292 ----------------------------------------
7293 12 May 2006. Summary of changes for version 20060512:
7295 1) ACPI CA Core Subsystem:
7297 Replaced the AcpiOsQueueForExecution interface with a new interface named
7298 AcpiOsExecute. The major difference is that the new interface does not
7300 a Priority parameter, this appeared to be useless and has been replaced
7303 Type parameter. The Type tells the host what type of execution is being
7304 requested, such as global lock handler, notify handler, GPE handler, etc.
7305 This allows the host to queue and execute the request as appropriate for
7307 request type, possibly using different work queues and different
7309 for the various request types. This enables fixes for multithreading
7310 deadlock problems such as BZ #5534, and will require changes to all
7312 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7314 Fixed a possible memory leak associated with the support for the so-
7316 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7319 Fixed a problem with the Load() operator where a table load from an
7320 operation region could overwrite an internal table buffer by up to 7
7322 and cause alignment faults on IPF systems. (With assistance from Luming
7325 Example Code and Data Size: These are the sizes for the OS-independent
7326 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7327 debug version of the code includes the debug output trace mechanism and
7329 a much larger code and data size.
7332 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7333 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7335 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7336 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7340 2) iASL Compiler/Disassembler and Tools:
7342 Disassembler: Implemented support to cross reference the internal
7344 and automatically generate ASL External() statements for symbols not
7346 within the current table being disassembled. This will simplify the
7347 disassembly and recompilation of interdependent tables such as SSDTs
7349 these statements will no longer have to be added manually.
7351 Disassembler: Implemented experimental support to automatically detect
7352 invocations of external control methods and generate appropriate
7354 statements. This is problematic because the AML cannot be correctly
7356 until the number of arguments for each control method is known.
7358 standalone method invocations and invocations as the source operand of a
7359 Store() statement are supported.
7361 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7362 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7363 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7364 more readable and likely closer to the original ASL source.
7366 ----------------------------------------
7367 21 April 2006. Summary of changes for version 20060421:
7369 1) ACPI CA Core Subsystem:
7371 Removed a device initialization optimization introduced in 20051216 where
7372 the _STA method was not run unless an _INI was also present for the same
7373 device. This optimization could cause problems because it could allow
7375 methods to be run within a not-present device subtree. (If a not-present
7376 device had no _INI, _STA would not be run, the not-present status would
7378 be discovered, and the children of the device would be incorrectly
7381 Implemented a new _STA optimization where namespace subtrees that do not
7382 contain _INI are identified and ignored during device initialization.
7383 Selectively running _STA can significantly improve boot time on large
7384 machines (with assistance from Len Brown.)
7386 Implemented support for the device initialization case where the returned
7387 _STA flags indicate a device not-present but functioning. In this case,
7389 is not run, but the device children are examined for presence, as per the
7392 Implemented an additional change to the IndexField support in order to
7393 conform to MS behavior. The value written to the Index Register is not
7394 simply a byte offset, it is a byte offset in units of the access width of
7395 the parent Index Field. (Fiodor Suietov)
7397 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7398 interface is called during the creation of all AML operation regions, and
7399 allows the host OS to exert control over what addresses it will allow the
7400 AML code to access. Operation Regions whose addresses are disallowed will
7401 cause a runtime exception when they are actually accessed (will not
7403 or abort table loading.) See oswinxf or osunixxf for an example
7406 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7407 interface allows the host OS to match the various "optional"
7408 interface/behavior strings for the _OSI predefined control method as
7409 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7410 for an example implementation.
7412 Restructured and corrected various problems in the exception handling
7414 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7415 (with assistance from Takayoshi Kochi.)
7417 Modified the Linux source converter to ignore quoted string literals
7419 converting identifiers from mixed to lower case. This will correct
7421 with the disassembler and other areas where such strings must not be
7424 The ACPI_FUNCTION_* macros no longer require quotes around the function
7425 name. This allows the Linux source converter to convert the names, now
7427 the converter ignores quoted strings.
7429 Example Code and Data Size: These are the sizes for the OS-independent
7430 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7431 debug version of the code includes the debug output trace mechanism and
7433 a much larger code and data size.
7437 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7438 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7440 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7441 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7444 2) iASL Compiler/Disassembler and Tools:
7446 Implemented 3 new warnings for iASL, and implemented multiple warning
7450 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7452 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7453 check for the possible timeout, a warning is issued.
7455 2) Useless operators: If an ASL operator does not specify an optional
7457 operand and it also does not use the function return value from the
7458 operator, a warning is issued since the operator effectively does
7461 3) Unreferenced objects: If a namespace object is created, but never
7462 referenced, a warning is issued. This is a warning level 2 since there
7464 cases where this is ok, such as when a secondary table is loaded that
7466 the unreferenced objects. Even so, care is taken to only flag objects
7468 don't look like they will ever be used. For example, the reserved methods
7469 (starting with an underscore) are usually not referenced because it is
7470 expected that the OS will invoke them.
7472 ----------------------------------------
7473 31 March 2006. Summary of changes for version 20060331:
7475 1) ACPI CA Core Subsystem:
7477 Implemented header file support for the following additional ACPI tables:
7478 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
7480 all current and known ACPI tables are now defined in the ACPICA headers
7482 are available for use by device drivers and other software.
7484 Implemented support to allow tables that contain ACPI names with invalid
7485 characters to be loaded. Previously, this would cause the table load to
7486 fail, but since there are several known cases of such tables on existing
7487 machines, this change was made to enable ACPI support for them. Also,
7489 matches the behavior of the Microsoft ACPI implementation.
7491 Fixed a couple regressions introduced during the memory optimization in
7493 20060317 release. The namespace node definition required additional
7494 reorganization and an internal datatype that had been changed to 8-bit
7496 restored to 32-bit. (Valery Podrezov)
7498 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
7499 could be passed through to AcpiOsReleaseObject which is unexpected. Such
7500 null pointers are now trapped and ignored, matching the behavior of the
7501 previous implementation before the deployment of AcpiOsReleaseObject.
7502 (Valery Podrezov, Fiodor Suietov)
7504 Fixed a memory mapping leak during the deletion of a SystemMemory
7506 region where a cached memory mapping was not deleted. This became a
7507 noticeable problem for operation regions that are defined within
7509 used control methods. (Dana Meyers)
7511 Reorganized the ACPI table header files into two main files: one for the
7512 ACPI tables consumed by the ACPICA core, and another for the
7514 ACPI tables that are consumed by the drivers and other software. The
7516 FADT definitions were merged into one common section and three different
7517 tables (ACPI 1.0, 1.0+, and 2.0)
7519 Example Code and Data Size: These are the sizes for the OS-independent
7520 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7521 debug version of the code includes the debug output trace mechanism and
7523 a much larger code and data size.
7526 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7527 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7529 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7530 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7533 2) iASL Compiler/Disassembler and Tools:
7535 Disassembler: Implemented support to decode and format all non-AML ACPI
7536 tables (tables other than DSDTs and SSDTs.) This includes the new tables
7537 added to the ACPICA headers, therefore all current and known ACPI tables
7541 Disassembler: The change to allow ACPI names with invalid characters also
7542 enables the disassembly of such tables. Invalid characters within names
7544 changed to '*' to make the name printable; the iASL compiler will still
7545 generate an error for such names, however, since this is an invalid ACPI
7548 Implemented an option for AcpiXtract (-a) to extract all tables found in
7550 input file. The default invocation extracts only the DSDTs and SSDTs.
7552 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
7553 makefile for the AcpiXtract utility.
7555 ----------------------------------------
7556 17 March 2006. Summary of changes for version 20060317:
7558 1) ACPI CA Core Subsystem:
7560 Implemented the use of a cache object for all internal namespace nodes.
7561 Since there are about 1000 static nodes in a typical system, this will
7562 decrease memory use for cache implementations that minimize per-
7564 overhead (such as a slab allocator.)
7566 Removed the reference count mechanism for internal namespace nodes, since
7568 was deemed unnecessary. This reduces the size of each namespace node by
7569 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
7571 and 32 bytes for the 64-bit case.
7573 Optimized several internal data structures to reduce object size on 64-
7575 platforms by packing data within the 64-bit alignment. This includes the
7576 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
7577 instances corresponding to the namespace objects.
7579 Added two new strings for the predefined _OSI method: "Windows 2001.1
7583 Split the allocation tracking mechanism out to a separate file, from
7584 utalloc.c to uttrack.c. This mechanism appears to be only useful for
7585 application-level code. Kernels may wish to not include uttrack.c in
7588 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
7590 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
7593 Code and Data Size: These are the sizes for the acpica.lib produced by
7595 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7597 driver or OSPM code. The debug version of the code includes the debug
7599 trace mechanism and has a much larger code and data size. Note that these
7600 values will vary depending on the efficiency of the compiler and the
7601 compiler options used during generation.
7604 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7605 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7607 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
7608 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
7611 2) iASL Compiler/Disassembler and Tools:
7613 Implemented an ANSI C version of the acpixtract utility. This version
7615 automatically extract the DSDT and all SSDTs from the input acpidump text
7616 file and dump the binary output to separate files. It can also display a
7617 summary of the input file including the headers for each table found and
7618 will extract any single ACPI table, with any signature. (See
7619 source/tools/acpixtract)
7621 ----------------------------------------
7622 10 March 2006. Summary of changes for version 20060310:
7624 1) ACPI CA Core Subsystem:
7626 Tagged all external interfaces to the subsystem with the new
7627 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
7629 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
7630 macro. The default definition is NULL.
7632 Added the ACPI_THREAD_ID type for the return value from
7634 This allows the host to define this as necessary to simplify kernel
7635 integration. The default definition is ACPI_NATIVE_UINT.
7637 Fixed two interpreter problems related to error processing, the deletion
7639 objects, and placing invalid pointers onto the internal operator result
7640 stack. BZ 6028, 6151 (Valery Podrezov)
7642 Increased the reference count threshold where a warning is emitted for
7644 reference counts in order to eliminate unnecessary warnings on systems
7646 large namespaces (especially 64-bit.) Increased the value from 0x400 to
7649 Due to universal disagreement as to the meaning of the 'c' in the
7651 function, the ACPI_MEM_CALLOCATE macro has been renamed to
7652 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
7653 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
7656 Code and Data Size: These are the sizes for the acpica.lib produced by
7658 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7660 driver or OSPM code. The debug version of the code includes the debug
7662 trace mechanism and has a much larger code and data size. Note that these
7663 values will vary depending on the efficiency of the compiler and the
7664 compiler options used during generation.
7667 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7668 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7670 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7671 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
7674 2) iASL Compiler/Disassembler:
7676 Disassembler: implemented support for symbolic resource descriptor
7677 references. If a CreateXxxxField operator references a fixed offset
7680 resource descriptor, a name is assigned to the descriptor and the offset
7682 translated to the appropriate resource tag and pathname. The addition of
7683 this support brings the disassembled code very close to the original ASL
7684 source code and helps eliminate run-time errors when the disassembled
7686 is modified (and recompiled) in such a way as to invalidate the original
7689 Implemented support for a Descriptor Name as the last parameter to the
7691 Register() macro. This parameter was inadvertently left out of the ACPI
7692 specification, and will be added for ACPI 3.0b.
7694 Fixed a problem where the use of the "_OSI" string (versus the full path
7695 "\_OSI") caused an internal compiler error. ("No back ptr to op")
7697 Fixed a problem with the error message that occurs when an invalid string
7699 used for a _HID object (such as one with an embedded asterisk:
7701 The correct message is now displayed.
7703 ----------------------------------------
7704 17 February 2006. Summary of changes for version 20060217:
7706 1) ACPI CA Core Subsystem:
7708 Implemented a change to the IndexField support to match the behavior of
7710 Microsoft AML interpreter. The value written to the Index register is now
7712 byte offset, no longer an index based upon the width of the Data
7714 This should fix IndexField problems seen on some machines where the Data
7715 register is not exactly one byte wide. The ACPI specification will be
7716 clarified on this point.
7718 Fixed a problem where several resource descriptor types could overrun the
7719 internal descriptor buffer due to size miscalculation: VendorShort,
7720 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
7721 affect all platforms.
7723 Fixed a problem where individual resource descriptors were misaligned
7725 the internal buffer, causing alignment faults on IA64 platforms.
7727 Code and Data Size: These are the sizes for the acpica.lib produced by
7729 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
7731 driver or OSPM code. The debug version of the code includes the debug
7733 trace mechanism and has a much larger code and data size. Note that these
7734 values will vary depending on the efficiency of the compiler and the
7735 compiler options used during generation.
7738 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7739 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7741 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
7742 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
7745 2) iASL Compiler/Disassembler:
7747 Implemented support for new reserved names: _WDG and _WED are Microsoft
7748 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
7749 defined method (Throttling Depth Limit.)
7751 Fixed a problem where a zero-length VendorShort or VendorLong resource
7752 descriptor was incorrectly emitted as a descriptor of length one.
7754 ----------------------------------------
7755 10 February 2006. Summary of changes for version 20060210:
7757 1) ACPI CA Core Subsystem:
7759 Removed a couple of extraneous ACPI_ERROR messages that appeared during
7760 normal execution. These became apparent after the conversion from
7763 Fixed a problem where the CreateField operator could hang if the BitIndex
7765 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
7767 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
7768 failed with an exception. This also fixes a couple of related RefOf and
7769 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
7771 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
7773 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
7777 Implemented a memory cleanup at the end of the execution of each
7779 of an AML While() loop, preventing the accumulation of outstanding
7781 (Valery Podrezov, BZ 5427)
7783 Eliminated a chunk of duplicate code in the object resolution code.
7787 Fixed several warnings during the 64-bit code generation.
7789 The AcpiSrc source code conversion tool now inserts one line of
7791 after an if() statement that is followed immediately by a comment,
7793 readability of the Linux code.
7795 Code and Data Size: The current and previous library sizes for the core
7796 subsystem are shown below. These are the code and data sizes for the
7797 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7799 values do not include any ACPI driver or OSPM code. The debug version of
7801 code includes the debug output trace mechanism and has a much larger code
7802 and data size. Note that these values will vary depending on the
7804 of the compiler and the compiler options used during generation.
7807 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7808 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7810 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
7811 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
7814 2) iASL Compiler/Disassembler:
7816 Fixed a problem with the disassembly of a BankField operator with a
7818 expression for the BankValue parameter.
7820 ----------------------------------------
7821 27 January 2006. Summary of changes for version 20060127:
7823 1) ACPI CA Core Subsystem:
7825 Implemented support in the Resource Manager to allow unresolved
7827 references within resource package objects for the _PRT method. This
7829 is in addition to the previously implemented unresolved reference support
7830 within the AML parser. If the interpreter slack mode is enabled, these
7831 unresolved references will be passed through to the caller as a NULL
7835 Implemented and deployed new macros and functions for error and warning
7836 messages across the subsystem. These macros are simpler and generate less
7837 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
7838 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
7839 macros remain defined to allow ACPI drivers time to migrate to the new
7842 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
7844 Acquire/Release Lock OSL interfaces.
7846 Fixed a problem where Alias ASL operators are sometimes not correctly
7847 resolved, in both the interpreter and the iASL compiler.
7849 Fixed several problems with the implementation of the
7850 ConcatenateResTemplate
7851 ASL operator. As per the ACPI specification, zero length buffers are now
7852 treated as a single EndTag. One-length buffers always cause a fatal
7853 exception. Non-zero length buffers that do not end with a full 2-byte
7855 cause a fatal exception.
7857 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
7858 interface. (With assistance from Thomas Renninger)
7860 Code and Data Size: The current and previous library sizes for the core
7861 subsystem are shown below. These are the code and data sizes for the
7862 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7864 values do not include any ACPI driver or OSPM code. The debug version of
7866 code includes the debug output trace mechanism and has a much larger code
7867 and data size. Note that these values will vary depending on the
7869 of the compiler and the compiler options used during generation.
7872 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7873 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7875 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
7876 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
7879 2) iASL Compiler/Disassembler:
7881 Fixed an internal error that was generated for any forward references to
7885 ----------------------------------------
7886 13 January 2006. Summary of changes for version 20060113:
7888 1) ACPI CA Core Subsystem:
7890 Added 2006 copyright to all module headers and signons. This affects
7891 virtually every file in the ACPICA core subsystem, iASL compiler, and the
7894 Enhanced the ACPICA error reporting in order to simplify user migration
7896 the non-debug version of ACPICA. Replaced all instances of the
7897 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
7899 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
7900 respectively. This preserves all error and warning messages in the non-
7902 version of the ACPICA code (this has been referred to as the "debug lite"
7903 option.) Over 200 cases were converted to create a total of over 380
7904 error/warning messages across the ACPICA code. This increases the code
7906 data size of the default non-debug version of the code somewhat (about
7908 but all error/warning reporting may be disabled if desired (and code
7909 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
7910 configuration option. The size of the debug version of ACPICA remains
7914 Fixed a memory leak within the AML Debugger "Set" command. One object was
7915 not properly deleted for every successful invocation of the command.
7917 Code and Data Size: The current and previous library sizes for the core
7918 subsystem are shown below. These are the code and data sizes for the
7919 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7921 values do not include any ACPI driver or OSPM code. The debug version of
7923 code includes the debug output trace mechanism and has a much larger code
7924 and data size. Note that these values will vary depending on the
7926 of the compiler and the compiler options used during generation.
7929 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
7930 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
7932 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
7933 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
7936 2) iASL Compiler/Disassembler:
7938 The compiler now officially supports the ACPI 3.0a specification that was
7939 released on December 30, 2005. (Specification is available at
7942 ----------------------------------------
7943 16 December 2005. Summary of changes for version 20051216:
7945 1) ACPI CA Core Subsystem:
7947 Implemented optional support to allow unresolved names within ASL Package
7948 objects. A null object is inserted in the package when a named reference
7949 cannot be located in the current namespace. Enabled via the interpreter
7950 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
7952 that contain such code.
7954 Implemented an optimization to the initialization sequence that can
7956 boot time. During ACPI device initialization, the _STA method is now run
7958 and only if the _INI method exists. The _STA method is used to determine
7960 the device is present; An _INI can only be run if _STA returns present,
7962 it is a waste of time to run the _STA method if the _INI does not exist.
7963 (Prototype and assistance from Dong Wei)
7965 Implemented use of the C99 uintptr_t for the pointer casting macros if it
7967 available in the current compiler. Otherwise, the default (void *) cast
7971 Fixed some possible memory leaks found within the execution path of the
7972 Break, Continue, If, and CreateField operators. (Valery Podrezov)
7974 Fixed a problem introduced in the 20051202 release where an exception is
7975 generated during method execution if a control method attempts to declare
7978 Moved resource descriptor string constants that are used by both the AML
7979 disassembler and AML debugger to the common utilities directory so that
7980 these components are independent.
7982 Implemented support in the AcpiExec utility (-e switch) to globally
7984 exceptions during control method execution (method is not aborted.)
7986 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
7989 Code and Data Size: The current and previous library sizes for the core
7990 subsystem are shown below. These are the code and data sizes for the
7991 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
7993 values do not include any ACPI driver or OSPM code. The debug version of
7995 code includes the debug output trace mechanism and has a much larger code
7996 and data size. Note that these values will vary depending on the
7998 of the compiler and the compiler options used during generation.
8001 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8002 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8004 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8005 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8008 2) iASL Compiler/Disassembler:
8010 Fixed a problem where a CPU stack overflow fault could occur if a
8012 method call was made from within a Return statement.
8014 ----------------------------------------
8015 02 December 2005. Summary of changes for version 20051202:
8017 1) ACPI CA Core Subsystem:
8019 Modified the parsing of control methods to no longer create namespace
8020 objects during the first pass of the parse. Objects are now created only
8021 during the execute phase, at the moment the namespace creation operator
8023 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8025 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8026 reentrant control methods are protected by an AML mutex. The mutex will
8028 correctly block multiple threads from attempting to create the same
8032 Increased the number of available Owner Ids for namespace object tracking
8033 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8035 some machines with a large number of ACPI tables (either static or
8038 Fixed a problem with the AcpiExec utility where a fault could occur when
8040 -b switch (batch mode) is used.
8042 Enhanced the namespace dump routine to output the owner ID for each
8045 Code and Data Size: The current and previous library sizes for the core
8046 subsystem are shown below. These are the code and data sizes for the
8047 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8049 values do not include any ACPI driver or OSPM code. The debug version of
8051 code includes the debug output trace mechanism and has a much larger code
8052 and data size. Note that these values will vary depending on the
8054 of the compiler and the compiler options used during generation.
8057 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8058 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8060 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8061 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8064 2) iASL Compiler/Disassembler:
8066 Fixed a parse error during compilation of certain Switch/Case constructs.
8068 simplify the parse, the grammar now allows for multiple Default
8070 and this error is now detected and flagged during the analysis phase.
8072 Disassembler: The disassembly now includes the contents of the original
8073 table header within a comment at the start of the file. This includes the
8074 name and version of the original ASL compiler.
8076 ----------------------------------------
8077 17 November 2005. Summary of changes for version 20051117:
8079 1) ACPI CA Core Subsystem:
8081 Fixed a problem in the AML parser where the method thread count could be
8082 decremented below zero if any errors occurred during the method parse
8084 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8086 This also fixed a related regression with the mechanism that detects and
8087 corrects methods that cannot properly handle reentrancy (related to the
8088 deployment of the new OwnerId mechanism.)
8090 Eliminated the pre-parsing of control methods (to detect errors) during
8091 table load. Related to the problem above, this was causing unwind issues
8093 any errors occurred during the parse, and it seemed to be overkill. A
8095 load should not be aborted if there are problems with any single control
8096 method, thus rendering this feature rather pointless.
8098 Fixed a problem with the new table-driven resource manager where an
8100 buffer overflow could occur for small resource templates.
8102 Implemented a new external interface, AcpiGetVendorResource. This
8104 will find and return a vendor-defined resource descriptor within a _CRS
8106 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8109 Removed the length limit (200) on string objects as per the upcoming ACPI
8110 3.0A specification. This affects the following areas of the interpreter:
8112 any implicit conversion of a Buffer to a String, 2) a String object
8114 of the ASL Concatentate operator, 3) the String object result of the ASL
8117 Fixed a problem in the Windows OS interface layer (OSL) where a
8119 on a semaphore object would incorrectly timeout. This allows the
8120 multithreading features of the AcpiExec utility to work properly under
8123 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8124 the recently added file named "utresrc.c".
8126 Code and Data Size: The current and previous library sizes for the core
8127 subsystem are shown below. These are the code and data sizes for the
8128 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8130 values do not include any ACPI driver or OSPM code. The debug version of
8132 code includes the debug output trace mechanism and has a much larger code
8133 and data size. Note that these values will vary depending on the
8135 of the compiler and the compiler options used during generation.
8138 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8139 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8141 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8142 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8145 2) iASL Compiler/Disassembler:
8147 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8148 specification. For the iASL compiler, this means that string literals
8150 the source ASL can be of any length.
8152 Enhanced the listing output to dump the AML code for resource descriptors
8153 immediately after the ASL code for each descriptor, instead of in a block
8155 the end of the entire resource template.
8157 Enhanced the compiler debug output to dump the entire original parse tree
8158 constructed during the parse phase, before any transforms are applied to
8160 tree. The transformed tree is dumped also.
8162 ----------------------------------------
8163 02 November 2005. Summary of changes for version 20051102:
8165 1) ACPI CA Core Subsystem:
8167 Modified the subsystem initialization sequence to improve GPE support.
8169 GPE initialization has been split into two parts in order to defer
8171 of the _PRW methods (Power Resources for Wake) until after the hardware
8173 fully initialized and the SCI handler is installed. This allows the _PRW
8174 methods to access fields protected by the Global Lock. This will fix
8176 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8178 Converted the ACPI internal object disassemble and display code within
8180 AML debugger to fully table-driven operation, reducing code size and
8181 increasing maintainability.
8183 Fixed a regression with the ConcatenateResTemplate() ASL operator
8185 in the 20051021 release.
8187 Implemented support for "local" internal ACPI object types within the
8188 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8189 These local types include RegionFields, BankFields, IndexFields, Alias,
8193 Moved common AML resource handling code into a new file, "utresrc.c".
8195 code is shared by both the Resource Manager and the AML Debugger.
8197 Code and Data Size: The current and previous library sizes for the core
8198 subsystem are shown below. These are the code and data sizes for the
8199 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8201 values do not include any ACPI driver or OSPM code. The debug version of
8203 code includes the debug output trace mechanism and has a much larger code
8204 and data size. Note that these values will vary depending on the
8206 of the compiler and the compiler options used during generation.
8209 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8210 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8212 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8213 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8216 2) iASL Compiler/Disassembler:
8218 Fixed a problem with very large initializer lists (more than 4000
8220 for both Buffer and Package objects where the parse stack could overflow.
8222 Enhanced the pre-compile source code scan for non-ASCII characters to
8224 characters within comment fields. The scan is now always performed and is
8226 longer optional, detecting invalid characters within a source file
8227 immediately rather than during the parse phase or later.
8229 Enhanced the ASL grammar definition to force early reductions on all
8231 style grammar elements so that the overall parse stack usage is greatly
8232 reduced. This should improve performance and reduce the possibility of
8236 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8238 with the addition of a %expected statement, the compiler generates from
8239 source with no warnings.
8241 Fixed a possible segment fault in the disassembler if the input filename
8242 does not contain a "dot" extension (Thomas Renninger).
8244 ----------------------------------------
8245 21 October 2005. Summary of changes for version 20051021:
8247 1) ACPI CA Core Subsystem:
8249 Implemented support for the EM64T and other x86-64 processors. This
8250 essentially entails recognizing that these processors support non-aligned
8251 memory transfers. Previously, all 64-bit processors were assumed to lack
8252 hardware support for non-aligned transfers.
8254 Completed conversion of the Resource Manager to nearly full table-driven
8255 operation. Specifically, the resource conversion code (convert AML to
8256 internal format and the reverse) and the debug code to dump internal
8257 resource descriptors are fully table-driven, reducing code and data size
8259 improving maintainability.
8261 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8263 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8265 Alexey Starikovskiy)
8267 Implemented support within the resource conversion code for the Type-
8268 Specific byte within the various ACPI 3.0 *WordSpace macros.
8270 Fixed some issues within the resource conversion code for the type-
8272 flags for both Memory and I/O address resource descriptors. For Memory,
8273 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8274 TTP flags into two separate fields.
8276 Code and Data Size: The current and previous library sizes for the core
8277 subsystem are shown below. These are the code and data sizes for the
8278 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8280 values do not include any ACPI driver or OSPM code. The debug version of
8282 code includes the debug output trace mechanism and has a much larger code
8283 and data size. Note that these values will vary depending on the
8285 of the compiler and the compiler options used during generation.
8288 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8289 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8291 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8292 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8296 2) iASL Compiler/Disassembler:
8298 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8300 corresponding ResourceSource string was not also present in a resource
8301 descriptor declaration. This restriction caused problems with existing
8302 AML/ASL code that includes the Index byte without the string. When such
8304 was disassembled, it could not be compiled without modification. Further,
8305 the modified code created a resource template with a different size than
8307 original, breaking code that used fixed offsets into the resource
8311 Removed a recent feature of the disassembler to ignore a lone
8313 byte. This byte is now emitted if present so that the exact AML can be
8314 reproduced when the disassembled code is recompiled.
8316 Improved comments and text alignment for the resource descriptor code
8317 emitted by the disassembler.
8319 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8321 Register() resource descriptor.
8323 ----------------------------------------
8324 30 September 2005. Summary of changes for version 20050930:
8326 1) ACPI CA Core Subsystem:
8328 Completed a major overhaul of the Resource Manager code - specifically,
8329 optimizations in the area of the AML/internal resource conversion code.
8331 code has been optimized to simplify and eliminate duplicated code, CPU
8333 use has been decreased by optimizing function parameters and local
8334 variables, and naming conventions across the manager have been
8336 for clarity and ease of maintenance (this includes function, parameter,
8337 variable, and struct/typedef names.) The update may force changes in some
8338 driver code, depending on how resources are handled by the host OS.
8340 All Resource Manager dispatch and information tables have been moved to a
8341 single location for clarity and ease of maintenance. One new file was
8342 created, named "rsinfo.c".
8344 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8345 guarantee that the argument is not evaluated twice, making them less
8347 to macro side-effects. However, since there exists the possibility of
8348 additional stack use if a particular compiler cannot optimize them (such
8350 in the debug generation case), the original macros are optionally
8352 Note that some invocations of the return_VALUE macro may now cause size
8353 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8355 eliminate these. (From Randy Dunlap)
8357 Implemented a new mechanism to enable debug tracing for individual
8359 methods. A new external interface, AcpiDebugTrace, is provided to enable
8360 this mechanism. The intent is to allow the host OS to easily enable and
8361 disable tracing for problematic control methods. This interface can be
8362 easily exposed to a user or debugger interface if desired. See the file
8363 psxface.c for details.
8365 AcpiUtCallocate will now return a valid pointer if a length of zero is
8366 specified - a length of one is used and a warning is issued. This matches
8367 the behavior of AcpiUtAllocate.
8369 Code and Data Size: The current and previous library sizes for the core
8370 subsystem are shown below. These are the code and data sizes for the
8371 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8373 values do not include any ACPI driver or OSPM code. The debug version of
8375 code includes the debug output trace mechanism and has a much larger code
8376 and data size. Note that these values will vary depending on the
8378 of the compiler and the compiler options used during generation.
8381 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8382 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8384 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8385 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8388 2) iASL Compiler/Disassembler:
8390 A remark is issued if the effective compile-time length of a package or
8391 buffer is zero. Previously, this was a warning.
8393 ----------------------------------------
8394 16 September 2005. Summary of changes for version 20050916:
8396 1) ACPI CA Core Subsystem:
8398 Fixed a problem within the Resource Manager where support for the Generic
8399 Register descriptor was not fully implemented. This descriptor is now
8401 recognized, parsed, disassembled, and displayed.
8403 Completely restructured the Resource Manager code to utilize table-driven
8404 dispatch and lookup, eliminating many of the large switch() statements.
8406 reduces overall subsystem code size and code complexity. Affects the
8407 resource parsing and construction, disassembly, and debug dump output.
8409 Cleaned up and restructured the debug dump output for all resource
8410 descriptors. Improved readability of the output and reduced code size.
8412 Fixed a problem where changes to internal data structures caused the
8413 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8415 Code and Data Size: The current and previous library sizes for the core
8416 subsystem are shown below. These are the code and data sizes for the
8417 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8419 values do not include any ACPI driver or OSPM code. The debug version of
8421 code includes the debug output trace mechanism and has a much larger code
8422 and data size. Note that these values will vary depending on the
8424 of the compiler and the compiler options used during generation.
8427 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8428 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8430 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8431 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8434 2) iASL Compiler/Disassembler:
8436 Updated the disassembler to automatically insert an EndDependentFn()
8438 into the ASL stream if this macro is missing in the original AML code,
8439 simplifying compilation of the resulting ASL module.
8441 Fixed a problem in the disassembler where a disassembled ResourceSource
8442 string (within a large resource descriptor) was not surrounded by quotes
8444 not followed by a comma, causing errors when the resulting ASL module was
8445 compiled. Also, escape sequences within a ResourceSource string are now
8446 handled correctly (especially "\\")
8448 ----------------------------------------
8449 02 September 2005. Summary of changes for version 20050902:
8451 1) ACPI CA Core Subsystem:
8453 Fixed a problem with the internal Owner ID allocation and deallocation
8454 mechanisms for control method execution and recursive method invocation.
8455 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
8456 messages seen on some systems. Recursive method invocation depth is
8457 currently limited to 255. (Alexey Starikovskiy)
8459 Completely eliminated all vestiges of support for the "module-level
8460 executable code" until this support is fully implemented and debugged.
8462 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
8463 some systems that invoke this support.
8465 Fixed a problem within the resource manager code where the transaction
8467 for a 64-bit address descriptor were handled incorrectly in the type-
8470 Consolidated duplicate code within the address descriptor resource
8472 code, reducing overall subsystem code size.
8474 Fixed a fault when using the AML debugger "disassemble" command to
8475 disassemble individual control methods.
8477 Removed references to the "release_current" directory within the Unix
8480 Code and Data Size: The current and previous core subsystem library sizes
8481 are shown below. These are the code and data sizes for the acpica.lib
8482 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
8483 include any ACPI driver or OSPM code. The debug version of the code
8485 the debug output trace mechanism and has a much larger code and data
8487 Note that these values will vary depending on the efficiency of the
8489 and the compiler options used during generation.
8492 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8493 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8495 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8496 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8499 2) iASL Compiler/Disassembler:
8501 Implemented an error check for illegal duplicate values in the interrupt
8503 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
8506 Implemented error checking for the Irq() and IrqNoFlags() macros to
8508 too many values in the interrupt list (16 max) and invalid values in the
8511 The maximum length string literal within an ASL file is now restricted to
8512 200 characters as per the ACPI specification.
8514 Fixed a fault when using the -ln option (generate namespace listing).
8516 Implemented an error check to determine if a DescriptorName within a
8517 resource descriptor has already been used within the current scope.
8519 ----------------------------------------
8520 15 August 2005. Summary of changes for version 20050815:
8522 1) ACPI CA Core Subsystem:
8524 Implemented a full bytewise compare to determine if a table load request
8526 attempting to load a duplicate table. The compare is performed if the
8528 signatures and table lengths match. This will allow different tables with
8529 the same OEM Table ID and revision to be loaded - probably against the
8531 specification, but discovered in the field nonetheless.
8533 Added the changes.txt logfile to each of the zipped release packages.
8535 Code and Data Size: Current and previous core subsystem library sizes are
8536 shown below. These are the code and data sizes for the acpica.lib
8538 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8539 any ACPI driver or OSPM code. The debug version of the code includes the
8540 debug output trace mechanism and has a much larger code and data size.
8542 that these values will vary depending on the efficiency of the compiler
8544 the compiler options used during generation.
8547 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8548 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8550 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8551 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
8554 2) iASL Compiler/Disassembler:
8556 Fixed a problem where incorrect AML code could be generated for Package
8557 objects if optimization is disabled (via the -oa switch).
8559 Fixed a problem with where incorrect AML code is generated for variable-
8560 length packages when the package length is not specified and the number
8562 initializer values is greater than 255.
8565 ----------------------------------------
8566 29 July 2005. Summary of changes for version 20050729:
8568 1) ACPI CA Core Subsystem:
8570 Implemented support to ignore an attempt to install/load a particular
8572 table more than once. Apparently there exists BIOS code that repeatedly
8573 attempts to load the same SSDT upon certain events. With assistance from
8574 Venkatesh Pallipadi.
8576 Restructured the main interface to the AML parser in order to correctly
8577 handle all exceptional conditions. This will prevent leakage of the
8579 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
8581 machines. With assistance from Alexey Starikovskiy.
8583 Support for "module level code" has been disabled in this version due to
8585 number of issues that have appeared on various machines. The support can
8587 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
8588 compilation. When the issues are fully resolved, the code will be enabled
8592 Modified the internal functions for debug print support to define the
8593 FunctionName parameter as a (const char *) for compatibility with
8595 built-in macros such as __FUNCTION__, etc.
8597 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
8599 Implemented support to display an object count summary for the AML
8601 commands Object and Methods.
8603 Code and Data Size: Current and previous core subsystem library sizes are
8604 shown below. These are the code and data sizes for the acpica.lib
8606 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8607 any ACPI driver or OSPM code. The debug version of the code includes the
8608 debug output trace mechanism and has a much larger code and data size.
8610 that these values will vary depending on the efficiency of the compiler
8612 the compiler options used during generation.
8615 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8616 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8618 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
8619 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
8622 2) iASL Compiler/Disassembler:
8624 Fixed a regression that appeared in the 20050708 version of the compiler
8625 where an error message was inadvertently emitted for invocations of the
8627 reserved control method.
8629 ----------------------------------------
8630 08 July 2005. Summary of changes for version 20050708:
8632 1) ACPI CA Core Subsystem:
8634 The use of the CPU stack in the debug version of the subsystem has been
8635 considerably reduced. Previously, a debug structure was declared in every
8636 function that used the debug macros. This structure has been removed in
8637 favor of declaring the individual elements as parameters to the debug
8638 functions. This reduces the cumulative stack use during nested execution
8640 ACPI function calls at the cost of a small increase in the code size of
8642 debug version of the subsystem. With assistance from Alexey Starikovskiy
8646 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
8647 headers to define a macro that will return the current function name at
8648 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
8650 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
8651 compiler-dependent header, the function name is saved on the CPU stack
8653 pointer per function.) This mechanism is used because apparently there
8654 exists no standard ANSI-C defined macro that that returns the function
8657 Redesigned and reimplemented the "Owner ID" mechanism used to track
8658 namespace objects created/deleted by ACPI tables and control method
8659 execution. A bitmap is now used to allocate and free the IDs, thus
8661 the wraparound problem present in the previous implementation. The size
8663 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
8666 Removed the UINT32_BIT and UINT16_BIT types that were used for the
8668 flag definitions within the headers for the predefined ACPI tables. These
8669 have been replaced by UINT8_BIT in order to increase the code portability
8671 the subsystem. If the use of UINT8 remains a problem, we may be forced to
8672 eliminate bitfields entirely because of a lack of portability.
8674 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
8676 is a frequently used function and this improvement increases the
8678 of the entire subsystem (Alexey Starikovskiy).
8680 Fixed several possible memory leaks and the inverse - premature object
8681 deletion (Alexey Starikovskiy).
8683 Code and Data Size: Current and previous core subsystem library sizes are
8684 shown below. These are the code and data sizes for the acpica.lib
8686 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8687 any ACPI driver or OSPM code. The debug version of the code includes the
8688 debug output trace mechanism and has a much larger code and data size.
8690 that these values will vary depending on the efficiency of the compiler
8692 the compiler options used during generation.
8695 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8696 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8698 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
8699 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
8701 ----------------------------------------
8702 24 June 2005. Summary of changes for version 20050624:
8704 1) ACPI CA Core Subsystem:
8706 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
8707 the host-defined cache object. This allows the OSL implementation to
8709 and type this object in any manner desired, simplifying the OSL
8710 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
8711 Linux, and should be defined in the OS-specific header file for other
8712 operating systems as required.
8714 Changed the interface to AcpiOsAcquireObject to directly return the
8715 requested object as the function return (instead of ACPI_STATUS.) This
8716 change was made for performance reasons, since this is the purpose of the
8717 interface in the first place. AcpiOsAcquireObject is now similar to the
8718 AcpiOsAllocate interface.
8720 Implemented a new AML debugger command named Businfo. This command
8722 information about all devices that have an associate _PRT object. The
8724 _HID, _UID, and _CID are displayed for these devices.
8726 Modified the initialization sequence in AcpiInitializeSubsystem to call
8728 OSL interface AcpiOslInitialize first, before any local initialization.
8730 change was required because the global initialization now calls OSL
8733 Enhanced the Dump command to display the entire contents of Package
8735 (including all sub-objects and their values.)
8737 Restructured the code base to split some files because of size and/or
8738 because the code logically belonged in a separate file. New files are
8740 below. All makefiles and project files included in the ACPI CA release
8743 utilities/utcache.c /* Local cache interfaces */
8744 utilities/utmutex.c /* Local mutex support */
8745 utilities/utstate.c /* State object support */
8746 interpreter/parser/psloop.c /* Main AML parse loop */
8748 Code and Data Size: Current and previous core subsystem library sizes are
8749 shown below. These are the code and data sizes for the acpica.lib
8751 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8752 any ACPI driver or OSPM code. The debug version of the code includes the
8753 debug output trace mechanism and has a much larger code and data size.
8755 that these values will vary depending on the efficiency of the compiler
8757 the compiler options used during generation.
8760 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8761 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8763 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
8764 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
8767 2) iASL Compiler/Disassembler:
8769 Fixed a regression introduced in version 20050513 where the use of a
8771 object within a Case() statement caused a compile time exception. The
8772 original behavior has been restored (a Match() operator is emitted.)
8774 ----------------------------------------
8775 17 June 2005. Summary of changes for version 20050617:
8777 1) ACPI CA Core Subsystem:
8779 Moved the object cache operations into the OS interface layer (OSL) to
8781 the host OS to handle these operations if desired (for example, the Linux
8782 OSL will invoke the slab allocator). This support is optional; the
8784 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
8786 code in the ACPI CA core. The new OSL interfaces are shown below. See
8787 utalloc.c for an example implementation, and acpiosxf.h for the exact
8788 interface definitions. With assistance from Alexey Starikovskiy.
8795 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
8797 and restore a flags parameter. This fits better with many OS lock models.
8798 Note: the current execution state (interrupt handler or not) is no longer
8799 passed to these interfaces. If necessary, the OSL must determine this
8801 by itself, a simple and fast operation. With assistance from Alexey
8804 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
8805 present if the revision of the RSDP was 2 or greater. According to the
8807 specification, the XSDT is optional in all cases, and the table manager
8808 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
8809 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
8813 Fixed an interpreter problem with the Mid() operator in the case of an
8815 string where the resulting output string is of zero length. It now
8817 returns a valid, null terminated string object instead of a string object
8818 with a null pointer.
8820 Fixed a problem with the control method argument handling to allow a
8822 to an Arg object that already contains an object of type Device. The
8824 object is now correctly overwritten. Previously, an error was returned.
8827 Enhanced the debugger Find command to emit object values in addition to
8829 found object pathnames. The output format is the same as the dump
8833 Enhanced the debugger Set command. It now has the ability to set the
8835 of any Named integer object in the namespace (Previously, only method
8837 and args could be set.)
8839 Code and Data Size: Current and previous core subsystem library sizes are
8840 shown below. These are the code and data sizes for the acpica.lib
8842 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8843 any ACPI driver or OSPM code. The debug version of the code includes the
8844 debug output trace mechanism and has a much larger code and data size.
8846 that these values will vary depending on the efficiency of the compiler
8848 the compiler options used during generation.
8851 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8852 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8854 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
8855 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
8858 2) iASL Compiler/Disassembler:
8860 Fixed a regression in the disassembler where if/else/while constructs
8862 output incorrectly. This problem was introduced in the previous release
8863 (20050526). This problem also affected the single-step disassembly in the
8866 Fixed a problem where compiling the reserved _OSI method would randomly
8868 rarely) produce compile errors.
8870 Enhanced the disassembler to emit compilable code in the face of
8872 AML resource descriptors. If the optional ResourceSourceIndex is present,
8873 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
8874 disassembly. Otherwise, the resulting code cannot be compiled without
8877 ----------------------------------------
8878 26 May 2005. Summary of changes for version 20050526:
8880 1) ACPI CA Core Subsystem:
8882 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
8883 the module level (not within a control method.) These opcodes are
8885 exactly once at the time the table is loaded. This type of code was legal
8887 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
8889 order to provide backwards compatibility with earlier BIOS
8891 This eliminates the "Encountered executable code at module level" warning
8892 that was previously generated upon detection of such code.
8894 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
8895 inadvertently be generated during the lookup of namespace objects in the
8896 second pass parse of ACPI tables and control methods. It appears that
8898 problem could occur during the resolution of forward references to
8902 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
8903 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
8904 allows the deadlock detection debug code to be compiled out in the normal
8905 case, improving mutex performance (and overall subsystem performance)
8908 Implemented a handful of miscellaneous fixes for possible memory leaks on
8909 error conditions and error handling control paths. These fixes were
8910 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
8912 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
8914 to prevent a fault in this error case.
8916 Code and Data Size: Current and previous core subsystem library sizes are
8917 shown below. These are the code and data sizes for the acpica.lib
8919 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8920 any ACPI driver or OSPM code. The debug version of the code includes the
8921 debug output trace mechanism and has a much larger code and data size.
8923 that these values will vary depending on the efficiency of the compiler
8925 the compiler options used during generation.
8928 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
8929 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
8931 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
8932 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
8935 2) iASL Compiler/Disassembler:
8937 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
8938 the module level (not within a control method.) These operators will be
8939 executed once at the time the table is loaded. This type of code was
8941 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
8942 compiler in order to provide backwards compatibility with earlier BIOS
8946 The ACPI integer width (specified via the table revision ID or the -r
8947 override, 32 or 64 bits) is now used internally during compile-time
8949 folding to ensure that constants are truncated to 32 bits if necessary.
8950 Previously, the revision ID value was only emitted in the AML table
8953 An error message is now generated for the Mutex and Method operators if
8955 SyncLevel parameter is outside the legal range of 0 through 15.
8957 Fixed a problem with the Method operator ParameterTypes list handling
8959 3.0). Previously, more than 2 types or 2 arguments generated a syntax
8961 The actual underlying implementation of method argument typechecking is
8962 still under development, however.
8964 ----------------------------------------
8965 13 May 2005. Summary of changes for version 20050513:
8967 1) ACPI CA Core Subsystem:
8969 Implemented support for PCI Express root bridges -- added support for
8971 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
8973 The interpreter now automatically truncates incoming 64-bit constants to
8975 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
8977 also affects the iASL compiler constant folding. (Note: as per below, the
8978 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
8980 Fixed a problem where string and buffer objects with "static" pointers
8981 (pointers to initialization data within an ACPI table) were not handled
8982 consistently. The internal object copy operation now always copies the
8984 to a newly allocated buffer, regardless of whether the source object is
8987 Fixed a problem with the FromBCD operator where an implicit result
8988 conversion was improperly performed while storing the result to the
8990 operand. Since this is an "explicit conversion" operator, the implicit
8991 conversion should never be performed on the output.
8993 Fixed a problem with the CopyObject operator where a copy to an existing
8994 named object did not always completely overwrite the existing object
8996 at name. Specifically, a buffer-to-buffer copy did not delete the
9000 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9002 structs for consistency.
9004 Code and Data Size: Current and previous core subsystem library sizes are
9005 shown below. These are the code and data sizes for the acpica.lib
9007 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9008 any ACPI driver or OSPM code. The debug version of the code includes the
9009 debug output trace mechanism and has a much larger code and data size.
9011 that these values will vary depending on the efficiency of the compiler
9013 the compiler options used during generation.
9016 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9017 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9018 Current Release: (Same sizes)
9019 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9020 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9023 2) iASL Compiler/Disassembler:
9025 The compiler now emits a warning if an attempt is made to generate a 64-
9027 integer constant from within a 32-bit ACPI table (Revision < 2). The
9029 is truncated to 32 bits.
9031 Fixed a problem with large package objects: if the static length of the
9032 package is greater than 255, the "variable length package" opcode is
9033 emitted. Previously, this caused an error. This requires an update to the
9034 ACPI spec, since it currently (incorrectly) states that packages larger
9036 255 elements are not allowed.
9038 The disassembler now correctly handles variable length packages and
9040 larger than 255 elements.
9042 ----------------------------------------
9043 08 April 2005. Summary of changes for version 20050408:
9045 1) ACPI CA Core Subsystem:
9047 Fixed three cases in the interpreter where an "index" argument to an ASL
9048 function was still (internally) 32 bits instead of the required 64 bits.
9049 This was the Index argument to the Index, Mid, and Match operators.
9051 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9053 not a POSIX-defined function and not present in most kernel-level C
9054 libraries. All references to the C library strupr function have been
9058 Completed the deployment of static functions/prototypes. All prototypes
9060 the static attribute have been moved from the headers to the owning C
9063 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9064 utility). This option allows the utility to extract individual ACPI
9066 from the output of AcpiDmp. It provides the same functionality of the
9067 acpixtract.pl perl script without the worry of setting the correct perl
9068 options. AcpiBin runs on Windows and has not yet been generated/validated
9070 the Linux/Unix environment (but should be soon).
9072 Updated and fixed the table dump option for AcpiBin (-d). This option
9073 converts a single ACPI table to a hex/ascii file, similar to the output
9077 Code and Data Size: Current and previous core subsystem library sizes are
9078 shown below. These are the code and data sizes for the acpica.lib
9080 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9081 any ACPI driver or OSPM code. The debug version of the code includes the
9082 debug output trace mechanism and has a much larger code and data size.
9084 that these values will vary depending on the efficiency of the compiler
9086 the compiler options used during generation.
9089 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9090 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9092 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9093 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9096 2) iASL Compiler/Disassembler:
9098 Disassembler fix: Added a check to ensure that the table length found in
9100 ACPI table header within the input file is not longer than the actual
9102 file size. This indicates some kind of file or table corruption.
9104 ----------------------------------------
9105 29 March 2005. Summary of changes for version 20050329:
9107 1) ACPI CA Core Subsystem:
9109 An error is now generated if an attempt is made to create a Buffer Field
9111 length zero (A CreateField with a length operand of zero.)
9113 The interpreter now issues a warning whenever executable code at the
9115 level is detected during ACPI table load. This will give some idea of the
9116 prevalence of this type of code.
9118 Implemented support for references to named objects (other than control
9119 methods) within package objects.
9121 Enhanced package object output for the debug object. Package objects are
9123 completely dumped, showing all elements.
9125 Enhanced miscellaneous object output for the debug object. Any object can
9126 now be written to the debug object (for example, a device object can be
9127 written, and the type of the object will be displayed.)
9129 The "static" qualifier has been added to all local functions across both
9131 core subsystem and the iASL compiler.
9133 The number of "long" lines (> 80 chars) within the source has been
9134 significantly reduced, by about 1/3.
9136 Cleaned up all header files to ensure that all CA/iASL functions are
9137 prototyped (even static functions) and the formatting is consistent.
9139 Two new header files have been added, acopcode.h and acnames.h.
9141 Removed several obsolete functions that were no longer used.
9143 Code and Data Size: Current and previous core subsystem library sizes are
9144 shown below. These are the code and data sizes for the acpica.lib
9146 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9147 any ACPI driver or OSPM code. The debug version of the code includes the
9148 debug output trace mechanism and has a much larger code and data size.
9150 that these values will vary depending on the efficiency of the compiler
9152 the compiler options used during generation.
9155 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9156 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9158 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9159 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9163 2) iASL Compiler/Disassembler:
9165 Fixed a problem with the resource descriptor generation/support. For the
9166 ResourceSourceIndex and the ResourceSource fields, both must be present,
9168 both must be not present - can't have one without the other.
9170 The compiler now returns non-zero from the main procedure if any errors
9172 occurred during the compilation.
9175 ----------------------------------------
9176 09 March 2005. Summary of changes for version 20050309:
9178 1) ACPI CA Core Subsystem:
9180 The string-to-buffer implicit conversion code has been modified again
9182 a change to the ACPI specification. In order to match the behavior of
9184 other major ACPI implementation, the target buffer is no longer truncated
9186 the source string is smaller than an existing target buffer. This change
9187 requires an update to the ACPI spec, and should eliminate the recent
9188 AE_AML_BUFFER_LIMIT issues.
9190 The "implicit return" support was rewritten to a new algorithm that
9192 the general case. Rather than attempt to determine when a method is about
9194 exit, the result of every ASL operator is saved momentarily until the
9196 next ASL operator is executed. Therefore, no matter how the method exits,
9197 there will always be a saved implicit return value. This feature is only
9198 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9200 AE_AML_NO_RETURN_VALUE errors when enabled.
9202 Implemented implicit conversion support for the predicate (operand) of
9204 If, Else, and While operators. String and Buffer arguments are
9206 converted to Integers.
9208 Changed the string-to-integer conversion behavior to match the new ACPI
9209 errata: "If no integer object exists, a new integer is created. The ASCII
9210 string is interpreted as a hexadecimal constant. Each string character is
9211 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9212 with the first character as the most significant digit, and ending with
9214 first non-hexadecimal character or end-of-string." This means that the
9216 non-hex character terminates the conversion and this is the code that was
9219 Fixed a problem where the ObjectType operator would fail (fault) when
9221 on an Index of a Package which pointed to a null package element. The
9222 operator now properly returns zero (Uninitialized) in this case.
9224 Fixed a problem where the While operator used excessive memory by not
9225 properly popping the result stack during execution. There was no memory
9227 after execution, however. (Code provided by Valery Podrezov.)
9229 Fixed a problem where references to control methods within Package
9231 caused the method to be invoked, instead of producing a reference object
9232 pointing to the method.
9234 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9236 improve performance and reduce code size. (Code provided by Alexey
9239 Code and Data Size: Current and previous core subsystem library sizes are
9240 shown below. These are the code and data sizes for the acpica.lib
9242 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9243 any ACPI driver or OSPM code. The debug version of the code includes the
9244 debug output trace mechanism and has a much larger code and data size.
9246 that these values will vary depending on the efficiency of the compiler
9248 the compiler options used during generation.
9251 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9252 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9254 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9255 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9258 2) iASL Compiler/Disassembler:
9260 Fixed a problem with the Return operator with no arguments. Since the AML
9261 grammar for the byte encoding requires an operand for the Return opcode,
9263 compiler now emits a Return(Zero) for this case. An ACPI specification
9264 update has been written for this case.
9266 For tables other than the DSDT, namepath optimization is automatically
9267 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9269 compiler has no knowledge of where, and thus cannot optimize namepaths.
9271 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9272 inadvertently omitted from the ACPI specification, and will require an
9275 The source file scan for ASCII characters is now optional (-a). This
9277 was made because some vendors place non-ascii characters within comments.
9278 However, the scan is simply a brute-force byte compare to ensure all
9279 characters in the file are in the range 0x00 to 0x7F.
9281 Fixed a problem with the CondRefOf operator where the compiler was
9282 inappropriately checking for the existence of the target. Since the point
9284 the operator is to check for the existence of the target at run-time, the
9285 compiler no longer checks for the target existence.
9287 Fixed a problem where errors generated from the internal AML interpreter
9288 during constant folding were not handled properly, causing a fault.
9290 Fixed a problem with overly aggressive range checking for the Stall
9291 operator. The valid range (max 255) is now only checked if the operand is
9293 type Integer. All other operand types cannot be statically checked.
9295 Fixed a problem where control method references within the RefOf,
9297 and ObjectType operators were not treated properly. They are now treated
9299 actual references, not method invocations.
9301 Fixed and enhanced the "list namespace" option (-ln). This option was
9303 a number of releases ago.
9305 Improved error handling for the Field, IndexField, and BankField
9307 The compiler now cleanly reports and recovers from errors in the field
9308 component (FieldUnit) list.
9310 Fixed a disassembler problem where the optional ResourceDescriptor fields
9311 TRS and TTP were not always handled correctly.
9313 Disassembler - Comments in output now use "//" instead of "/*"
9315 ----------------------------------------
9316 28 February 2005. Summary of changes for version 20050228:
9318 1) ACPI CA Core Subsystem:
9320 Fixed a problem where the result of an Index() operator (an object
9321 reference) must increment the reference count on the target object for
9323 life of the object reference.
9325 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9326 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9328 resource descriptors.
9330 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9331 Space Descriptor" string, indicating interpreter support for the
9335 Implemented header support for the new ACPI 3.0 FADT flag bits.
9337 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9339 status/enable registers.
9341 Updated header support for the MADT processor local Apic struct and MADT
9342 platform interrupt source struct for new ACPI 3.0 fields.
9344 Implemented header support for the SRAT and SLIT ACPI tables.
9346 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9350 Code and Data Size: Current and previous core subsystem library sizes are
9351 shown below. These are the code and data sizes for the acpica.lib
9353 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9354 any ACPI driver or OSPM code. The debug version of the code includes the
9355 debug output trace mechanism and has a much larger code and data size.
9357 that these values will vary depending on the efficiency of the compiler
9359 the compiler options used during generation.
9362 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9363 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9365 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9366 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9369 2) iASL Compiler/Disassembler:
9371 Fixed a problem with the internal 64-bit String-to-integer conversion
9373 strings less than two characters long.
9375 Fixed a problem with constant folding where the result of the Index()
9376 operator can not be considered a constant. This means that Index() cannot
9378 a type3 opcode and this will require an update to the ACPI specification.
9380 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9381 descriptor fields. These fields were inadvertently ignored and not output
9383 the disassembly of the resource descriptor.
9386 ----------------------------------------
9387 11 February 2005. Summary of changes for version 20050211:
9389 1) ACPI CA Core Subsystem:
9391 Implemented ACPI 3.0 support for implicit conversion within the Match()
9392 operator. MatchObjects can now be of type integer, buffer, or string
9394 of just type integer. Package elements are implicitly converted to the
9396 of the MatchObject. This change aligns the behavior of Match() with the
9397 behavior of the other logical operators (LLess(), etc.) It also requires
9399 errata change to the ACPI specification as this support was intended for
9400 ACPI 3.0, but was inadvertently omitted.
9402 Fixed a problem with the internal implicit "to buffer" conversion.
9404 that are converted to buffers will cause buffer truncation if the string
9406 smaller than the target buffer. Integers that are converted to buffers
9408 not cause buffer truncation, only zero extension (both as per the ACPI
9409 spec.) The problem was introduced when code was added to truncate the
9410 buffer, but this should not be performed in all cases, only the string
9413 Fixed a problem with the Buffer and Package operators where the
9415 would get confused if two such operators were used as operands to an ASL
9416 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9417 stack was not being popped after the execution of these operators,
9419 in an AE_NO_RETURN_VALUE exception.
9421 Fixed a problem with constructs of the form Store(Index(...),...). The
9422 reference object returned from Index was inadvertently resolved to an
9424 value. This problem was introduced in version 20050114 when the behavior
9426 Store() was modified to restrict the object types that can be used as the
9427 source operand (to match the ACPI specification.)
9429 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9431 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9433 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9435 Code and Data Size: Current and previous core subsystem library sizes are
9436 shown below. These are the code and data sizes for the acpica.lib
9438 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9439 any ACPI driver or OSPM code. The debug version of the code includes the
9440 debug output trace mechanism and has a much larger code and data size.
9442 that these values will vary depending on the efficiency of the compiler
9444 the compiler options used during generation.
9447 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9448 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9450 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9451 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9454 2) iASL Compiler/Disassembler:
9456 Fixed a code generation problem in the constant folding optimization code
9457 where incorrect code was generated if a constant was reduced to a buffer
9458 object (i.e., a reduced type 5 opcode.)
9460 Fixed a typechecking problem for the ToBuffer operator. Caused by an
9461 incorrect return type in the internal opcode information table.
9463 ----------------------------------------
9464 25 January 2005. Summary of changes for version 20050125:
9466 1) ACPI CA Core Subsystem:
9468 Fixed a recently introduced problem with the Global Lock where the
9469 underlying semaphore was not created. This problem was introduced in
9470 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
9471 Acquire() operation on _GL.
9473 The local object cache is now optional, and is disabled by default. Both
9474 AcpiExec and the iASL compiler enable the cache because they run in user
9475 mode and this enhances their performance. #define
9476 ACPI_ENABLE_OBJECT_CACHE
9477 to enable the local cache.
9479 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
9481 optional "implicit return" support where an error was returned if no
9483 object was expected, but one was implicitly returned. AE_OK is now
9485 in this case and the implicitly returned object is deleted.
9486 AcpiUtEvaluateObject is only occasionally used, and only to execute
9488 methods such as _STA and _INI where the return type is known up front.
9490 Fixed a few issues with the internal convert-to-integer code. It now
9492 an error if an attempt is made to convert a null string, a string of only
9493 blanks/tabs, or a zero-length buffer. This affects both implicit
9495 and explicit conversion via the ToInteger() operator.
9497 The internal debug code in AcpiUtAcquireMutex has been commented out. It
9499 not needed for normal operation and should increase the performance of
9501 entire subsystem. The code remains in case it is needed for debug
9505 The AcpiExec source and makefile are included in the Unix/Linux package
9509 Code and Data Size: Current and previous core subsystem library sizes are
9510 shown below. These are the code and data sizes for the acpica.lib
9512 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9513 any ACPI driver or OSPM code. The debug version of the code includes the
9514 debug output trace mechanism and has a much larger code and data size.
9516 that these values will vary depending on the efficiency of the compiler
9518 the compiler options used during generation.
9521 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9522 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9524 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9525 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9527 2) iASL Compiler/Disassembler:
9529 Switch/Case support: A warning is now issued if the type of the Switch
9531 cannot be determined at compile time. For example, Switch(Arg0) will
9532 generate the warning, and the type is assumed to be an integer. As per
9534 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
9538 Switch/Case support: Implemented support for buffer and string objects as
9539 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
9540 buffers and strings.
9542 Switch/Case support: The emitted code for the LEqual() comparisons now
9544 the switch value as the first operand, not the second. The case value is
9546 the second operand, and this allows the case value to be implicitly
9547 converted to the type of the switch value, not the other way around.
9549 Switch/Case support: Temporary variables are now emitted immediately
9551 the control method, not at the global level. This means that there are
9553 36 temps available per-method, not 36 temps per-module as was the case
9555 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
9557 ----------------------------------------
9558 14 January 2005. Summary of changes for version 20050114:
9560 Added 2005 copyright to all module headers. This affects every module in
9561 the core subsystem, iASL compiler, and the utilities.
9563 1) ACPI CA Core Subsystem:
9565 Fixed an issue with the String-to-Buffer conversion code where the string
9566 null terminator was not included in the buffer after conversion, but
9568 is existing ASL that assumes the string null terminator is included. This
9570 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
9571 introduced in the previous version when the code was updated to correctly
9572 set the converted buffer size as per the ACPI specification. The ACPI
9574 is ambiguous and will be updated to specify that the null terminator must
9576 included in the converted buffer. This also affects the ToBuffer() ASL
9579 Fixed a problem with the Mid() ASL/AML operator where it did not work
9580 correctly on Buffer objects. Newly created sub-buffers were not being
9585 Fixed a problem in AcpiTbFindTable where incorrect string compares were
9586 performed on the OemId and OemTableId table header fields. These fields
9588 not null terminated, so strncmp is now used instead of strcmp.
9590 Implemented a restriction on the Store() ASL/AML operator to align the
9591 behavior with the ACPI specification. Previously, any object could be
9593 as the source operand. Now, the only objects that may be used are
9595 Buffers, Strings, Packages, Object References, and DDB Handles. If
9596 necessary, the original behavior can be restored by enabling the
9597 EnableInterpreterSlack flag.
9599 Enhanced the optional "implicit return" support to allow an implicit
9601 value from methods that are invoked externally via the AcpiEvaluateObject
9602 interface. This enables implicit returns from the _STA and _INI methods,
9605 Changed the Revision() ASL/AML operator to return the current version of
9607 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
9609 the supported ACPI version (This is the function of the _REV method).
9611 Updated the _REV predefined method to return the currently supported
9615 Implemented batch mode option for the AcpiExec utility (-b).
9617 Code and Data Size: Current and previous core subsystem library sizes are
9618 shown below. These are the code and data sizes for the acpica.lib
9620 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9621 any ACPI driver or OSPM code. The debug version of the code includes the
9622 debug output trace mechanism and has a much larger code and data size.
9624 that these values will vary depending on the efficiency of the compiler
9626 the compiler options used during generation.
9629 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9630 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9632 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
9633 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
9635 ----------------------------------------
9636 10 December 2004. Summary of changes for version 20041210:
9638 ACPI 3.0 support is nearing completion in both the iASL compiler and the
9639 ACPI CA core subsystem.
9641 1) ACPI CA Core Subsystem:
9643 Fixed a problem in the ToDecimalString operator where the resulting
9645 length was incorrectly calculated. The length is now calculated exactly,
9646 eliminating incorrect AE_STRING_LIMIT exceptions.
9648 Fixed a problem in the ToHexString operator to allow a maximum 200
9650 string to be produced.
9652 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
9654 routine where the length of the resulting buffer was not truncated to the
9655 new size (if the target buffer already existed).
9657 Code and Data Size: Current and previous core subsystem library sizes are
9658 shown below. These are the code and data sizes for the acpica.lib
9660 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9661 any ACPI driver or OSPM code. The debug version of the code includes the
9662 debug output trace mechanism and has a much larger code and data size.
9664 that these values will vary depending on the efficiency of the compiler
9666 the compiler options used during generation.
9669 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9670 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9672 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9673 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
9676 2) iASL Compiler/Disassembler:
9678 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
9679 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
9680 Includes support in the disassembler.
9682 Implemented support for the new (ACPI 3.0) parameter to the Register
9686 Fixed a problem where the _HE resource name for the Interrupt macro was
9687 referencing bit 0 instead of bit 1.
9689 Implemented check for maximum 255 interrupts in the Interrupt macro.
9691 Fixed a problem with the predefined resource descriptor names where
9692 incorrect AML code was generated if the offset within the resource buffer
9693 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
9694 but did not update the surrounding package lengths.
9696 Changes to the Dma macro: All channels within the channel list must be
9698 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
9699 optional (default is BusMaster).
9701 Implemented check for maximum 7 data bytes for the VendorShort macro.
9703 The ReadWrite parameter is now optional for the Memory32 and similar
9706 ----------------------------------------
9707 03 December 2004. Summary of changes for version 20041203:
9709 1) ACPI CA Core Subsystem:
9711 The low-level field insertion/extraction code (exfldio) has been
9713 rewritten to eliminate unnecessary complexity, bugs, and boundary
9716 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
9718 operators where the input operand could be inadvertently deleted if no
9719 conversion was necessary (e.g., if the input to ToInteger was an Integer
9722 Fixed a problem with the ToDecimalString and ToHexString where an
9724 exception code was returned if the resulting string would be > 200 chars.
9725 AE_STRING_LIMIT is now returned.
9727 Fixed a problem with the Concatenate operator where AE_OK was always
9728 returned, even if the operation failed.
9730 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
9731 semaphores to be allocated.
9733 Code and Data Size: Current and previous core subsystem library sizes are
9734 shown below. These are the code and data sizes for the acpica.lib
9736 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9737 any ACPI driver or OSPM code. The debug version of the code includes the
9738 debug output trace mechanism and has a much larger code and data size.
9740 that these values will vary depending on the efficiency of the compiler
9742 the compiler options used during generation.
9745 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9746 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9748 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9749 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
9752 2) iASL Compiler/Disassembler:
9754 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
9755 recently introduced in 20041119.
9757 Fixed a problem with the ToUUID macro where the upper nybble of each
9759 byte was inadvertently set to zero.
9761 ----------------------------------------
9762 19 November 2004. Summary of changes for version 20041119:
9764 1) ACPI CA Core Subsystem:
9766 Fixed a problem in the internal ConvertToInteger routine where new
9768 were not truncated to 32 bits for 32-bit ACPI tables. This routine
9770 buffers and strings to integers.
9772 Implemented support to store a value to an Index() on a String object.
9774 is an ACPI 2.0 feature that had not yet been implemented.
9776 Implemented new behavior for storing objects to individual package
9778 (via the Index() operator). The previous behavior was to invoke the
9780 conversion rules if an object was already present at the index. The new
9781 behavior is to simply delete any existing object and directly store the
9783 object. Although the ACPI specification seems unclear on this subject,
9785 ACPI implementations behave in this manner. (This is the root of the
9786 AE_BAD_HEX_CONSTANT issue.)
9788 Modified the RSDP memory scan mechanism to support the extended checksum
9790 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
9791 RSDP signature is found with a valid checksum.
9793 Code and Data Size: Current and previous core subsystem library sizes are
9794 shown below. These are the code and data sizes for the acpica.lib
9796 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9797 any ACPI driver or OSPM code. The debug version of the code includes the
9798 debug output trace mechanism and has a much larger code and data size.
9800 that these values will vary depending on the efficiency of the compiler
9802 the compiler options used during generation.
9805 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9806 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9808 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9809 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9812 2) iASL Compiler/Disassembler:
9814 Fixed a missing semicolon in the aslcompiler.y file.
9816 ----------------------------------------
9817 05 November 2004. Summary of changes for version 20041105:
9819 1) ACPI CA Core Subsystem:
9821 Implemented support for FADT revision 2. This was an interim table
9823 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
9825 Implemented optional support to allow uninitialized LocalX and ArgX
9826 variables in a control method. The variables are initialized to an
9828 object with a value of zero. This support is enabled by setting the
9829 AcpiGbl_EnableInterpreterSlack flag to TRUE.
9831 Implemented support for Integer objects for the SizeOf operator. Either
9833 or 8 is returned, depending on the current integer size (32-bit or 64-
9835 depending on the parent table revision).
9837 Fixed a problem in the implementation of the SizeOf and ObjectType
9839 where the operand was resolved to a value too early, causing incorrect
9840 return values for some objects.
9842 Fixed some possible memory leaks during exceptional conditions.
9844 Code and Data Size: Current and previous core subsystem library sizes are
9845 shown below. These are the code and data sizes for the acpica.lib
9847 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9848 any ACPI driver or OSPM code. The debug version of the code includes the
9849 debug output trace mechanism and has a much larger code and data size.
9851 that these values will vary depending on the efficiency of the compiler
9853 the compiler options used during generation.
9856 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9857 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9859 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
9860 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
9863 2) iASL Compiler/Disassembler:
9865 Implemented support for all ACPI 3.0 reserved names and methods.
9867 Implemented all ACPI 3.0 grammar elements in the front-end, including
9868 support for semicolons.
9870 Implemented the ACPI 3.0 Function() and ToUUID() macros
9872 Fixed a problem in the disassembler where a Scope() operator would not be
9873 emitted properly if the target of the scope was in another table.
9875 ----------------------------------------
9876 15 October 2004. Summary of changes for version 20041015:
9878 Note: ACPI CA is currently undergoing an in-depth and complete formal
9879 evaluation to test/verify the following areas. Other suggestions are
9880 welcome. This will result in an increase in the frequency of releases and
9881 the number of bug fixes in the next few months.
9882 - Functional tests for all ASL/AML operators
9883 - All implicit/explicit type conversions
9884 - Bit fields and operation regions
9885 - 64-bit math support and 32-bit-only "truncated" math support
9886 - Exceptional conditions, both compiler and interpreter
9887 - Dynamic object deletion and memory leaks
9888 - ACPI 3.0 support when implemented
9889 - External interfaces to the ACPI subsystem
9892 1) ACPI CA Core Subsystem:
9894 Fixed two alignment issues on 64-bit platforms - within debug statements
9896 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
9898 field within the non-aligned ACPI generic address structure.
9900 Fixed a problem in the Increment and Decrement operators where incorrect
9901 operand resolution could result in the inadvertent modification of the
9902 original integer when the integer is passed into another method as an
9903 argument and the arg is then incremented/decremented.
9905 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
9907 BCD number were truncated during conversion.
9909 Fixed a problem in the ToDecimal operator where the length of the
9911 string could be set incorrectly too long if the input operand was a
9915 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
9917 within a buffer would prematurely terminate a compare between buffer
9920 Added a check for string overflow (>200 characters as per the ACPI
9921 specification) during the Concatenate operator with two string operands.
9923 Code and Data Size: Current and previous core subsystem library sizes are
9924 shown below. These are the code and data sizes for the acpica.lib
9926 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9927 any ACPI driver or OSPM code. The debug version of the code includes the
9928 debug output trace mechanism and has a much larger code and data size.
9930 that these values will vary depending on the efficiency of the compiler
9932 the compiler options used during generation.
9935 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
9936 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
9938 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
9939 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
9943 2) iASL Compiler/Disassembler:
9945 Allow the use of the ObjectType operator on uninitialized Locals and Args
9946 (returns 0 as per the ACPI specification).
9948 Fixed a problem where the compiler would fault if there was a syntax
9950 in the FieldName of all of the various CreateXXXField operators.
9952 Disallow the use of lower case letters within the EISAID macro, as per
9954 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
9956 U is an uppercase letter and N is a hex digit.
9959 ----------------------------------------
9960 06 October 2004. Summary of changes for version 20041006:
9962 1) ACPI CA Core Subsystem:
9964 Implemented support for the ACPI 3.0 Timer operator. This ASL function
9965 implements a 64-bit timer with 100 nanosecond granularity.
9967 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
9968 implement the ACPI 3.0 Timer operator. This allows the host OS to
9970 the timer with the best clock available. Also, it keeps the core
9972 out of the clock handling business, since the host OS (usually) performs
9975 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
9976 functions use a 64-bit address which is part of the packed ACPI Generic
9977 Address Structure. Since the structure is non-aligned, the alignment
9979 are now used to extract the address to a local variable before use.
9981 Fixed a problem where the ToInteger operator assumed all input strings
9983 hexadecimal. The operator now handles both decimal strings and hex
9985 (prefixed with "0x").
9987 Fixed a problem where the string length in the string object created as a
9988 result of the internal ConvertToString procedure could be incorrect. This
9989 potentially affected all implicit conversions and also the
9991 and ToHexString operators.
9993 Fixed two problems in the ToString operator. If the length parameter was
9994 zero, an incorrect string object was created and the value of the input
9995 length parameter was inadvertently changed from zero to Ones.
9997 Fixed a problem where the optional ResourceSource string in the
9999 resource macro was ignored.
10001 Simplified the interfaces to the internal division functions, reducing
10003 size and complexity.
10005 Code and Data Size: Current and previous core subsystem library sizes are
10006 shown below. These are the code and data sizes for the acpica.lib
10008 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10009 any ACPI driver or OSPM code. The debug version of the code includes the
10010 debug output trace mechanism and has a much larger code and data size.
10012 that these values will vary depending on the efficiency of the compiler
10014 the compiler options used during generation.
10017 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10018 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10020 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10021 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10024 2) iASL Compiler/Disassembler:
10026 Implemented support for the ACPI 3.0 Timer operator.
10028 Fixed a problem where the Default() operator was inadvertently ignored in
10030 Switch/Case block. This was a problem in the translation of the Switch
10031 statement to If...Else pairs.
10033 Added support to allow a standalone Return operator, with no parentheses
10037 Fixed a problem with code generation for the ElseIf operator where the
10038 translated Else...If parse tree was improperly constructed leading to the
10041 ----------------------------------------
10042 22 September 2004. Summary of changes for version 20040922:
10044 1) ACPI CA Core Subsystem:
10046 Fixed a problem with the implementation of the LNot() operator where
10048 was not returned for the TRUE case. Changed the code to return Ones
10050 of (!Arg) which was usually 1. This change affects iASL constant folding
10052 this operator also.
10054 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10056 initialized properly -- Now zero the entire buffer in this case where the
10057 buffer already exists.
10059 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10060 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10061 related code considerably. This will require changes/updates to all OS
10062 interface layers (OSLs.)
10064 Implemented a new external interface, AcpiInstallExceptionHandler, to
10066 a system exception handler to be installed. This handler is invoked upon
10068 run-time exception that occurs during control method execution.
10070 Added support for the DSDT in AcpiTbFindTable. This allows the
10071 DataTableRegion() operator to access the local copy of the DSDT.
10073 Code and Data Size: Current and previous core subsystem library sizes are
10074 shown below. These are the code and data sizes for the acpica.lib
10076 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10077 any ACPI driver or OSPM code. The debug version of the code includes the
10078 debug output trace mechanism and has a much larger code and data size.
10080 that these values will vary depending on the efficiency of the compiler
10082 the compiler options used during generation.
10085 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10086 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10088 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10089 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10092 2) iASL Compiler/Disassembler:
10094 Fixed a problem with constant folding and the LNot operator. LNot was
10095 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10097 could result in the generation of an incorrect folded/reduced constant.
10099 End-Of-File is now allowed within a "//"-style comment. A parse error no
10100 longer occurs if such a comment is at the very end of the input ASL
10104 Implemented the "-r" option to override the Revision in the table header.
10105 The initial use of this option will be to simplify the evaluation of the
10107 interpreter by allowing a single ASL source module to be compiled for
10109 32-bit or 64-bit integers.
10112 ----------------------------------------
10113 27 August 2004. Summary of changes for version 20040827:
10115 1) ACPI CA Core Subsystem:
10117 - Implemented support for implicit object conversion in the non-numeric
10118 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10120 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10121 the second operand is implicitly converted on the fly to match the type
10123 the first operand. For example:
10125 LEqual (Source1, Source2)
10127 Source1 and Source2 must each evaluate to an integer, a string, or a
10129 The data type of Source1 dictates the required type of Source2. Source2
10131 implicitly converted if necessary to match the type of Source1.
10133 - Updated and corrected the behavior of the string conversion support.
10135 rules concerning conversion of buffers to strings (according to the ACPI
10136 specification) are as follows:
10138 ToDecimalString - explicit byte-wise conversion of buffer to string of
10139 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10141 conversion of buffer to string of hex values (0-FF) separated by commas.
10142 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10144 copy with no transform except NULL terminated. Any other implicit buffer-
10146 string conversion - byte-wise conversion of buffer to string of hex
10148 (0-FF) separated by spaces.
10150 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10152 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10154 one byte too short in the case of a node in the root scope. This could
10155 cause a fault during debug output.
10157 - Code and Data Size: Current and previous core subsystem library sizes
10159 shown below. These are the code and data sizes for the acpica.lib
10161 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10162 any ACPI driver or OSPM code. The debug version of the code includes the
10163 debug output trace mechanism and has a much larger code and data size.
10165 that these values will vary depending on the efficiency of the compiler
10167 the compiler options used during generation.
10170 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10171 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10173 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10174 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10177 2) iASL Compiler/Disassembler:
10179 - Fixed a Linux generation error.
10182 ----------------------------------------
10183 16 August 2004. Summary of changes for version 20040816:
10185 1) ACPI CA Core Subsystem:
10187 Designed and implemented support within the AML interpreter for the so-
10188 called "implicit return". This support returns the result of the last
10190 operation within a control method, in the absence of an explicit Return()
10191 operator. A few machines depend on this behavior, even though it is not
10192 explicitly supported by the ASL language. It is optional support that
10194 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10196 Removed support for the PCI_Config address space from the internal low
10198 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10199 support was not used internally, and would not work correctly anyway
10201 the PCI bus number and segment number were not supported. There are
10202 separate interfaces for PCI configuration space access because of the
10206 Code and Data Size: Current and previous core subsystem library sizes are
10207 shown below. These are the code and data sizes for the acpica.lib
10209 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10210 any ACPI driver or OSPM code. The debug version of the code includes the
10211 debug output trace mechanism and has a much larger code and data size.
10213 that these values will vary depending on the efficiency of the compiler
10215 the compiler options used during generation.
10218 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10219 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10221 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10222 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10225 2) iASL Compiler/Disassembler:
10227 Fixed a problem where constants in ASL expressions at the root level (not
10228 within a control method) could be inadvertently truncated during code
10229 generation. This problem was introduced in the 20040715 release.
10232 ----------------------------------------
10233 15 July 2004. Summary of changes for version 20040715:
10235 1) ACPI CA Core Subsystem:
10237 Restructured the internal HW GPE interfaces to pass/track the current
10239 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10240 increase flexibility of the interfaces.
10242 Implemented a "lexicographical compare" for String and Buffer objects
10244 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10246 as per further clarification to the ACPI specification. Behavior is
10248 to C library "strcmp".
10250 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10251 external function. In the 32-bit non-debug case, the stack use has been
10252 reduced from 168 bytes to 32 bytes.
10254 Deployed a new run-time configuration flag,
10255 AcpiGbl_EnableInterpreterSlack,
10256 whose purpose is to allow the AML interpreter to forgive certain bad AML
10257 constructs. Default setting is FALSE.
10259 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10261 support code. If enabled, it allows field access to go beyond the end of
10263 region definition if the field is within the region length rounded up to
10265 next access width boundary (a common coding error.)
10267 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10268 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10270 symbols are lowercased by the latest version of the AcpiSrc tool.
10272 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10273 rename "Register" to simply "Reg" to prevent certain compilers from
10276 Code and Data Size: Current and previous core subsystem library sizes are
10277 shown below. These are the code and data sizes for the acpica.lib
10279 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10280 any ACPI driver or OSPM code. The debug version of the code includes the
10281 debug output trace mechanism and has a much larger code and data size.
10283 that these values will vary depending on the efficiency of the compiler
10285 the compiler options used during generation.
10288 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10289 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10291 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10292 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10295 2) iASL Compiler/Disassembler:
10297 Implemented full support for Package objects within the Case() operator.
10298 Note: The Break() operator is currently not supported within Case blocks
10299 (TermLists) as there is some question about backward compatibility with
10304 Fixed a problem where complex terms were not supported properly within
10308 Eliminated extraneous warning for compiler-emitted reserved names of the
10309 form "_T_x". (Used in Switch/Case operators.)
10311 Eliminated optimization messages for "_T_x" objects and small constants
10312 within the DefinitionBlock operator.
10315 ----------------------------------------
10316 15 June 2004. Summary of changes for version 20040615:
10318 1) ACPI CA Core Subsystem:
10320 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10322 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10325 All directory names in the entire source package are lower case, as they
10326 were in earlier releases.
10328 Implemented "Disassemble" command in the AML debugger that will
10330 a single control method.
10332 Code and Data Size: Current and previous core subsystem library sizes are
10333 shown below. These are the code and data sizes for the acpica.lib
10335 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10336 any ACPI driver or OSPM code. The debug version of the code includes the
10337 debug output trace mechanism and has a much larger code and data size.
10339 that these values will vary depending on the efficiency of the compiler
10341 the compiler options used during generation.
10344 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10345 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10348 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10349 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10352 2) iASL Compiler/Disassembler:
10354 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10356 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10359 All directory names in the entire source package are lower case, as they
10360 were in earlier releases.
10362 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10365 Fixed an issue with the Windows version of the compiler where later
10367 of Windows place the FADT in the registry under the name "FADT" and not
10368 "FACP" as earlier versions did. This applies when using the -g or -
10369 d<nofilename> options. The compiler now looks for both strings as
10372 Fixed a problem with compiler namepath optimization where a namepath
10374 the Scope() operator could not be optimized if the namepath was a subpath
10376 the current scope path.
10378 ----------------------------------------
10379 27 May 2004. Summary of changes for version 20040527:
10381 1) ACPI CA Core Subsystem:
10383 Completed a new design and implementation for EBDA (Extended BIOS Data
10385 support in the RSDP scan code. The original code improperly scanned for
10387 EBDA by simply scanning from memory location 0 to 0x400. The correct
10389 is to first obtain the EBDA pointer from within the BIOS data area, then
10390 scan 1K of memory starting at the EBDA pointer. There appear to be few
10392 any machines that place the RSDP in the EBDA, however.
10394 Integrated a fix for a possible fault during evaluation of BufferField
10395 arguments. Obsolete code that was causing the problem was removed.
10397 Found and fixed a problem in the Field Support Code where data could be
10398 corrupted on a bit field read that starts on an aligned boundary but does
10399 not end on an aligned boundary. Merged the read/write "datum length"
10400 calculation code into a common procedure.
10402 Rolled in a couple of changes to the FreeBSD-specific header.
10405 Code and Data Size: Current and previous core subsystem library sizes are
10406 shown below. These are the code and data sizes for the acpica.lib
10408 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10409 any ACPI driver or OSPM code. The debug version of the code includes the
10410 debug output trace mechanism and has a much larger code and data size.
10412 that these values will vary depending on the efficiency of the compiler
10414 the compiler options used during generation.
10417 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10418 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10420 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10421 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10424 2) iASL Compiler/Disassembler:
10426 Fixed a generation warning produced by some overly-verbose compilers for
10430 ----------------------------------------
10431 14 May 2004. Summary of changes for version 20040514:
10433 1) ACPI CA Core Subsystem:
10435 Fixed a problem where hardware GPE enable bits sometimes not set properly
10436 during and after GPE method execution. Result of 04/27 changes.
10438 Removed extra "clear all GPEs" when sleeping/waking.
10440 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10441 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10443 the new AcpiEv* calls as appropriate.
10445 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10447 now "Microsoft Windows NT" for maximum compatibility. However this can
10449 changed by modifying the acconfig.h file.
10451 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10452 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10454 Run _INI methods on ThermalZone objects. This is against the ACPI
10455 specification, but there is apparently ASL code in the field that has
10457 _INI methods, and apparently "other" AML interpreters execute them.
10459 Performed a full 16/32/64 bit lint that resulted in some small changes.
10461 Added a sleep simulation command to the AML debugger to test sleep code.
10463 Code and Data Size: Current and previous core subsystem library sizes are
10464 shown below. These are the code and data sizes for the acpica.lib
10466 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10467 any ACPI driver or OSPM code. The debug version of the code includes the
10468 debug output trace mechanism and has a much larger code and data size.
10470 that these values will vary depending on the efficiency of the compiler
10472 the compiler options used during generation.
10475 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10476 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10478 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10479 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10481 ----------------------------------------
10482 27 April 2004. Summary of changes for version 20040427:
10484 1) ACPI CA Core Subsystem:
10486 Completed a major overhaul of the GPE handling within ACPI CA. There are
10487 now three types of GPEs: wake-only, runtime-only, and combination
10489 The only GPEs allowed to be combination wake/run are for button-style
10490 devices such as a control-method power button, control-method sleep
10492 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
10494 referenced by any _PRW methods are marked for "runtime" and hardware
10495 enabled. Any GPE that is referenced by a _PRW method is marked for
10497 (and disabled at runtime). However, at sleep time, only those GPEs that
10498 have been specifically enabled for wake via the AcpiEnableGpe interface
10500 actually be hardware enabled.
10502 A new external interface has been added, AcpiSetGpeType(), that is meant
10504 be used by device drivers to force a GPE to a particular type. It will
10506 especially useful for the drivers for the button devices mentioned above.
10508 Completed restructuring of the ACPI CA initialization sequence so that
10509 default operation region handlers are installed before GPEs are
10511 and the _PRW methods are executed. This will prevent errors when the
10513 methods attempt to access system memory or I/O space.
10515 GPE enable/disable no longer reads the GPE enable register. We now keep
10517 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
10518 thus no longer depend on the hardware to maintain these bits.
10520 Always clear the wake status and fixed/GPE status bits before sleep, even
10523 Improved the AML debugger output for displaying the GPE blocks and their
10526 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
10530 Fixed a problem where the physical address was incorrectly calculated
10532 the Load() operator was used to directly load from an Operation Region
10534 loading from a Field object.) Also added check for minimum table length
10538 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
10541 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
10542 consistency with the other fields returned.
10544 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
10545 structure for each GPE in the system, so the size of this structure is
10548 CPU stack requirement reduction: Cleaned up the method execution and
10550 evaluation paths so that now a parameter structure is passed, instead of
10551 copying the various method parameters over and over again.
10553 In evregion.c: Correctly exit and reenter the interpreter region if and
10554 only if dispatching an operation region request to a user-installed
10556 Do not exit/reenter when dispatching to a default handler (e.g., default
10557 system memory or I/O handlers)
10560 Notes for updating drivers for the new GPE support. The following
10562 must be made to ACPI-related device drivers that are attached to one or
10564 GPEs: (This information will be added to the ACPI CA Programmer
10567 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
10569 explicitly call AcpiEnableGpe.
10570 2) There is a new interface called AcpiSetGpeType. This should be called
10571 before enabling the GPE. Also, this interface will automatically disable
10572 the GPE if it is currently enabled.
10573 3) AcpiEnableGpe no longer supports a GPE type flag.
10575 Specific drivers that must be changed:
10577 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
10578 AeGpeHandler, NULL);
10579 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
10580 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
10582 2) Button Drivers (Power, Lid, Sleep):
10583 Run _PRW method under parent device
10584 If _PRW exists: /* This is a control-method button */
10585 Extract GPE number and possibly GpeDevice
10586 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
10587 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
10589 For all other devices that have _PRWs, we automatically set the GPE type
10591 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
10593 must be done on a selective basis, usually requiring some kind of user
10595 to allow the user to pick the wake devices.
10598 Code and Data Size: Current and previous core subsystem library sizes are
10599 shown below. These are the code and data sizes for the acpica.lib
10601 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10602 any ACPI driver or OSPM code. The debug version of the code includes the
10603 debug output trace mechanism and has a much larger code and data size.
10605 that these values will vary depending on the efficiency of the compiler
10607 the compiler options used during generation.
10610 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10611 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10614 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10615 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
10619 ----------------------------------------
10620 02 April 2004. Summary of changes for version 20040402:
10622 1) ACPI CA Core Subsystem:
10624 Fixed an interpreter problem where an indirect store through an ArgX
10625 parameter was incorrectly applying the "implicit conversion rules" during
10626 the store. From the ACPI specification: "If the target is a method local
10628 argument (LocalX or ArgX), no conversion is performed and the result is
10629 stored directly to the target". The new behavior is to disable implicit
10630 conversion during ALL stores to an ArgX.
10632 Changed the behavior of the _PRW method scan to ignore any and all errors
10633 returned by a given _PRW. This prevents the scan from aborting from the
10634 failure of any single _PRW.
10636 Moved the runtime configuration parameters from the global init procedure
10638 static variables in acglobal.h. This will allow the host to override the
10639 default values easily.
10641 Code and Data Size: Current and previous core subsystem library sizes are
10642 shown below. These are the code and data sizes for the acpica.lib
10644 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10645 any ACPI driver or OSPM code. The debug version of the code includes the
10646 debug output trace mechanism and has a much larger code and data size.
10648 that these values will vary depending on the efficiency of the compiler
10650 the compiler options used during generation.
10653 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10654 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10656 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
10657 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
10660 2) iASL Compiler/Disassembler:
10662 iASL now fully disassembles SSDTs. However, External() statements are
10664 generated automatically for unresolved symbols at this time. This is a
10665 planned feature for future implementation.
10667 Fixed a scoping problem in the disassembler that occurs when the type of
10669 target of a Scope() operator is overridden. This problem caused an
10670 incorrectly nested internal namespace to be constructed.
10672 Any warnings or errors that are emitted during disassembly are now
10674 out automatically so that the resulting file can be recompiled without
10678 ----------------------------------------
10679 26 March 2004. Summary of changes for version 20040326:
10681 1) ACPI CA Core Subsystem:
10683 Implemented support for "wake" GPEs via interaction between GPEs and the
10684 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
10685 identified as a WAKE GPE and by default will no longer be enabled at
10686 runtime. Previously, we were blindly enabling all GPEs with a
10688 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
10690 believe this has been the cause of thousands of "spurious" GPEs on some
10693 This new GPE behavior is can be reverted to the original behavior (enable
10694 ALL GPEs at runtime) via a runtime flag.
10696 Fixed a problem where aliased control methods could not access objects
10697 properly. The proper scope within the namespace was not initialized
10698 (transferred to the target of the aliased method) before executing the
10701 Fixed a potential race condition on internal object deletion on the
10703 object in AcpiEvaluateObject.
10705 Integrated a fix for resource descriptors where both _MEM and _MTP were
10706 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
10707 wide, 0x0F instead of 0x03.)
10709 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
10712 fault in some cases.
10714 Updated Notify() values for debug statements in evmisc.c
10716 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
10718 Code and Data Size: Current and previous core subsystem library sizes are
10719 shown below. These are the code and data sizes for the acpica.lib
10721 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10722 any ACPI driver or OSPM code. The debug version of the code includes the
10723 debug output trace mechanism and has a much larger code and data size.
10725 that these values will vary depending on the efficiency of the compiler
10727 the compiler options used during generation.
10731 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10732 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10734 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
10735 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
10737 ----------------------------------------
10738 11 March 2004. Summary of changes for version 20040311:
10740 1) ACPI CA Core Subsystem:
10742 Fixed a problem where errors occurring during the parse phase of control
10743 method execution did not abort cleanly. For example, objects created and
10744 installed in the namespace were not deleted. This caused all subsequent
10745 invocations of the method to return the AE_ALREADY_EXISTS exception.
10747 Implemented a mechanism to force a control method to "Serialized"
10749 if the method attempts to create namespace objects. (The root of the
10750 AE_ALREADY_EXISTS problem.)
10752 Implemented support for the predefined _OSI "internal" control method.
10753 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
10755 "Windows 2001.1", and can be easily upgraded for new strings as
10757 This feature will allow "other" operating systems to execute the fully
10758 tested, "Windows" code path through the ASL code
10760 Global Lock Support: Now allows multiple acquires and releases with any
10761 internal thread. Removed concept of "owning thread" for this special
10764 Fixed two functions that were inappropriately declaring large objects on
10766 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
10768 method execution considerably.
10770 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
10771 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
10773 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
10774 defined on the machine.
10776 Implemented two runtime options: One to force all control method
10778 to "Serialized" to mimic Windows behavior, another to disable _OSI
10780 if it causes problems on a given machine.
10782 Code and Data Size: Current and previous core subsystem library sizes are
10783 shown below. These are the code and data sizes for the acpica.lib
10785 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10786 any ACPI driver or OSPM code. The debug version of the code includes the
10787 debug output trace mechanism and has a much larger code and data size.
10789 that these values will vary depending on the efficiency of the compiler
10791 the compiler options used during generation.
10794 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10795 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10797 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
10798 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
10800 2) iASL Compiler/Disassembler:
10802 Fixed an array size problem for FreeBSD that would cause the compiler to
10805 ----------------------------------------
10806 20 February 2004. Summary of changes for version 20040220:
10809 1) ACPI CA Core Subsystem:
10811 Implemented execution of _SxD methods for Device objects in the
10812 GetObjectInfo interface.
10814 Fixed calls to _SST method to pass the correct arguments.
10816 Added a call to _SST on wake to restore to "working" state.
10818 Check for End-Of-Buffer failure case in the WalkResources interface.
10820 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
10821 structures to the beginning of the file.
10823 After wake, clear GPE status register(s) before enabling GPEs.
10825 After wake, clear/enable power button. (Perhaps we should clear/enable
10827 fixed events upon wake.)
10829 Fixed a couple of possible memory leaks in the Namespace manager.
10831 Integrated latest acnetbsd.h file.
10833 ----------------------------------------
10834 11 February 2004. Summary of changes for version 20040211:
10837 1) ACPI CA Core Subsystem:
10839 Completed investigation and implementation of the call-by-reference
10840 mechanism for control method arguments.
10842 Fixed a problem where a store of an object into an indexed package could
10843 fail if the store occurs within a different method than the method that
10844 created the package.
10846 Fixed a problem where the ToDecimal operator could return incorrect
10849 Fixed a problem where the CopyObject operator could fail on some of the
10851 obscure objects (e.g., Reference objects.)
10853 Improved the output of the Debug object to display buffer, package, and
10856 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
10858 the expected result.
10860 Added permanent ACPI_REPORT_ERROR macros for all instances of the
10861 ACPI_AML_INTERNAL exception.
10863 Integrated latest version of acfreebsd.h
10865 ----------------------------------------
10866 16 January 2004. Summary of changes for version 20040116:
10868 The purpose of this release is primarily to update the copyright years in
10869 each module, thus causing a huge number of diffs. There are a few small
10870 functional changes, however.
10872 1) ACPI CA Core Subsystem:
10874 Improved error messages when there is a problem finding one or more of
10876 required base ACPI tables
10878 Reintroduced the definition of APIC_HEADER in actbl.h
10880 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
10882 Removed extraneous reference to NewObj in dsmthdat.c
10886 Fixed a problem introduced in December that disabled the correct
10888 of Resource Templates
10891 ----------------------------------------
10892 03 December 2003. Summary of changes for version 20031203:
10894 1) ACPI CA Core Subsystem:
10896 Changed the initialization of Operation Regions during subsystem
10897 init to perform two entire walks of the ACPI namespace; The first
10898 to initialize the regions themselves, the second to execute the
10899 _REG methods. This fixed some interdependencies across _REG
10900 methods found on some machines.
10902 Fixed a problem where a Store(Local0, Local1) could simply update
10903 the object reference count, and not create a new copy of the
10904 object if the Local1 is uninitialized.
10906 Implemented support for the _SST reserved method during sleep
10909 Implemented support to clear the SLP_TYP and SLP_EN bits when
10910 waking up, this is apparently required by some machines.
10912 When sleeping, clear the wake status only if SleepState is not S5.
10914 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
10915 pointer arithmetic advanced a string pointer too far.
10917 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
10918 could be returned if the requested table has not been loaded.
10920 Within the support for IRQ resources, restructured the handling of
10921 the active and edge/level bits.
10923 Fixed a few problems in AcpiPsxExecute() where memory could be
10924 leaked under certain error conditions.
10926 Improved error messages for the cases where the ACPI mode could
10929 Code and Data Size: Current and previous core subsystem library
10930 sizes are shown below. These are the code and data sizes for the
10931 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
10932 these values do not include any ACPI driver or OSPM code. The
10933 debug version of the code includes the debug output trace
10934 mechanism and has a much larger code and data size. Note that
10935 these values will vary depending on the efficiency of the compiler
10936 and the compiler options used during generation.
10938 Previous Release (20031029):
10939 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
10940 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
10942 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
10943 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
10945 2) iASL Compiler/Disassembler:
10947 Implemented a fix for the iASL disassembler where a bad index was
10948 generated. This was most noticeable on 64-bit platforms
10951 ----------------------------------------
10952 29 October 2003. Summary of changes for version 20031029:
10954 1) ACPI CA Core Subsystem:
10957 Fixed a problem where a level-triggered GPE with an associated
10958 _Lxx control method was incorrectly cleared twice.
10960 Fixed a problem with the Field support code where an access can
10961 occur beyond the end-of-region if the field is non-aligned but
10962 extends to the very end of the parent region (resulted in an
10963 AE_AML_REGION_LIMIT exception.)
10965 Fixed a problem with ACPI Fixed Events where an RT Clock handler
10966 would not get invoked on an RTC event. The RTC event bitmasks for
10967 the PM1 registers were not being initialized properly.
10969 Implemented support for executing _STA and _INI methods for
10970 Processor objects. Although this is currently not part of the
10971 ACPI specification, there is existing ASL code that depends on the
10972 init-time execution of these methods.
10974 Implemented and deployed a GetDescriptorName function to decode
10975 the various types of internal descriptors. Guards against null
10976 descriptors during debug output also.
10978 Implemented and deployed a GetNodeName function to extract the 4-
10979 character namespace node name. This function simplifies the debug
10980 and error output, as well as guarding against null pointers during
10983 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
10984 simplify the debug and error output of 64-bit integers. This
10985 macro replaces the HIDWORD and LODWORD macros for dumping these
10988 Updated the implementation of the Stall() operator to only call
10989 AcpiOsStall(), and also return an error if the operand is larger
10990 than 255. This preserves the required behavior of not
10991 relinquishing the processor, as would happen if AcpiOsSleep() was
10992 called for "long stalls".
10994 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
10995 initialized are now treated as NOOPs.
10997 Cleaned up a handful of warnings during 64-bit generation.
10999 Fixed a reported error where and incorrect GPE number was passed
11000 to the GPE dispatch handler. This value is only used for error
11001 output, however. Used this opportunity to clean up and streamline
11002 the GPE dispatch code.
11004 Code and Data Size: Current and previous core subsystem library
11005 sizes are shown below. These are the code and data sizes for the
11006 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11007 these values do not include any ACPI driver or OSPM code. The
11009 debug version of the code includes the debug output trace
11010 mechanism and has a much larger code and data size. Note that
11011 these values will vary depending on the efficiency of the compiler
11012 and the compiler options used during generation.
11014 Previous Release (20031002):
11015 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11016 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11018 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11019 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11022 2) iASL Compiler/Disassembler:
11024 Updated the iASL compiler to return an error if the operand to the
11025 Stall() operator is larger than 255.
11028 ----------------------------------------
11029 02 October 2003. Summary of changes for version 20031002:
11032 1) ACPI CA Core Subsystem:
11034 Fixed a problem with Index Fields where the index was not
11035 incremented for fields that require multiple writes to the
11036 index/data registers (Fields that are wider than the data
11039 Fixed a problem with all Field objects where a write could go
11040 beyond the end-of-field if the field was larger than the access
11041 granularity and therefore required multiple writes to complete the
11042 request. An extra write beyond the end of the field could happen
11045 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11046 would incorrectly be returned if the width of the Data Register
11047 was larger than the specified field access width.
11049 Completed fixes for LoadTable() and Unload() and verified their
11050 operation. Implemented full support for the "DdbHandle" object
11051 throughout the ACPI CA subsystem.
11053 Implemented full support for the MADT and ECDT tables in the ACPI
11054 CA header files. Even though these tables are not directly
11055 consumed by ACPI CA, the header definitions are useful for ACPI
11058 Integrated resource descriptor fixes posted to the Linux ACPI
11059 list. This included checks for minimum descriptor length, and
11060 support for trailing NULL strings within descriptors that have
11061 optional string elements.
11063 Code and Data Size: Current and previous core subsystem library
11064 sizes are shown below. These are the code and data sizes for the
11065 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11066 these values do not include any ACPI driver or OSPM code. The
11067 debug version of the code includes the debug output trace
11068 mechanism and has a much larger code and data size. Note that
11069 these values will vary depending on the efficiency of the compiler
11070 and the compiler options used during generation.
11072 Previous Release (20030918):
11073 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11074 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11076 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11077 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11082 Implemented detection of non-ASCII characters within the input
11083 source ASL file. This catches attempts to compile binary (AML)
11084 files early in the compile, with an informative error message.
11086 Fixed a problem where the disassembler would fault if the output
11087 filename could not be generated or if the output file could not be
11090 ----------------------------------------
11091 18 September 2003. Summary of changes for version 20030918:
11094 1) ACPI CA Core Subsystem:
11096 Found and fixed a longstanding problem with the late execution of
11097 the various deferred AML opcodes (such as Operation Regions,
11098 Buffer Fields, Buffers, and Packages). If the name string
11099 specified for the name of the new object placed the object in a
11100 scope other than the current scope, the initialization/execution
11101 of the opcode failed. The solution to this problem was to
11102 implement a mechanism where the late execution of such opcodes
11103 does not attempt to lookup/create the name a second time in an
11104 incorrect scope. This fixes the "region size computed
11105 incorrectly" problem.
11107 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11108 Global Lock AE_BAD_PARAMETER error.
11110 Fixed several 64-bit issues with prototypes, casting and data
11113 Removed duplicate prototype from acdisasm.h
11115 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11117 Code and Data Size: Current and previous core subsystem library
11118 sizes are shown below. These are the code and data sizes for the
11119 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11120 these values do not include any ACPI driver or OSPM code. The
11121 debug version of the code includes the debug output trace
11122 mechanism and has a much larger code and data size. Note that
11123 these values will vary depending on the efficiency of the compiler
11124 and the compiler options used during generation.
11128 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11129 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11131 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11132 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11137 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11138 correct sleep time in seconds.
11140 ----------------------------------------
11141 14 July 2003. Summary of changes for version 20030619:
11143 1) ACPI CA Core Subsystem:
11145 Parse SSDTs in order discovered, as opposed to reverse order
11148 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11155 Dynamically allocate SDT list (suggested by Andi Kleen)
11157 proc function return value cleanups (Andi Kleen)
11159 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11161 Make it so acpismp=force works (reported by Andrew Morton)
11164 ----------------------------------------
11165 19 June 2003. Summary of changes for version 20030619:
11167 1) ACPI CA Core Subsystem:
11169 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11171 Do not acquire a semaphore in the S5 shutdown path.
11173 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11175 Fix sleep/stall code reversal. (Andi Kleen)
11177 Revert a change having to do with control method calling
11182 acpiphp update (Takayoshi Kochi)
11184 Export acpi_disabled for sonypi (Stelian Pop)
11186 Mention acpismp=force in config help
11188 Re-add acpitable.c and acpismp=force. This improves backwards
11190 compatibility and also cleans up the code to a significant degree.
11192 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11194 ----------------------------------------
11195 22 May 2003. Summary of changes for version 20030522:
11197 1) ACPI CA Core Subsystem:
11199 Found and fixed a reported problem where an AE_NOT_FOUND error
11200 occurred occasionally during _BST evaluation. This turned out to
11201 be an Owner ID allocation issue where a called method did not get
11202 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11203 ID UINT16 would wraparound so that the ID would be the same as the
11204 caller's and the called method would delete the caller's
11207 Implemented extended error reporting for control methods that are
11208 aborted due to a run-time exception. Output includes the exact
11209 AML instruction that caused the method abort, a dump of the method
11210 locals and arguments at the time of the abort, and a trace of all
11211 nested control method calls.
11213 Modified the interpreter to allow the creation of buffers of zero
11214 length from the AML code. Implemented new code to ensure that no
11215 attempt is made to actually allocate a memory buffer (of length
11216 zero) - instead, a simple buffer object with a NULL buffer pointer
11217 and length zero is created. A warning is no longer issued when
11218 the AML attempts to create a zero-length buffer.
11220 Implemented a workaround for the "leading asterisk issue" in
11221 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11222 asterisk is automatically removed if present in any HID, UID, or
11223 CID strings. The iASL compiler will still flag this asterisk as
11226 Implemented full support for _CID methods that return a package of
11227 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11228 now additionally returns a device _CID list if present. This
11229 required a change to the external interface in order to pass an
11230 ACPI_BUFFER object as a parameter since the _CID list is of
11233 Fixed a problem with the new AE_SAME_HANDLER exception where
11234 handler initialization code did not know about this exception.
11236 Code and Data Size: Current and previous core subsystem library
11237 sizes are shown below. These are the code and data sizes for the
11238 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11239 these values do not include any ACPI driver or OSPM code. The
11240 debug version of the code includes the debug output trace
11241 mechanism and has a much larger code and data size. Note that
11242 these values will vary depending on the efficiency of the compiler
11243 and the compiler options used during generation.
11245 Previous Release (20030509):
11246 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11247 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11249 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11250 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11255 Fixed a bug in which we would reinitialize the ACPI interrupt
11256 after it was already working, thus disabling all ACPI and the IRQs
11257 for any other device sharing the interrupt. (Thanks to Stian
11260 Toshiba driver update (John Belmonte)
11262 Return only 0 or 1 for our interrupt handler status (Andrew
11268 Fixed a reported problem where multiple (nested) ElseIf()
11269 statements were not handled correctly by the compiler, resulting
11270 in incorrect warnings and incorrect AML code. This was a problem
11271 in both the ASL parser and the code generator.
11276 Added changes to existing interfaces, new exception codes, and new
11277 text concerning reference count object management versus garbage
11280 ----------------------------------------
11281 09 May 2003. Summary of changes for version 20030509.
11284 1) ACPI CA Core Subsystem:
11286 Changed the subsystem initialization sequence to hold off
11287 installation of address space handlers until the hardware has been
11288 initialized and the system has entered ACPI mode. This is because
11289 the installation of space handlers can cause _REG methods to be
11290 run. Previously, the _REG methods could potentially be run before
11291 ACPI mode was enabled.
11293 Fixed some memory leak issues related to address space handler and
11294 notify handler installation. There were some problems with the
11295 reference count mechanism caused by the fact that the handler
11296 objects are shared across several namespace objects.
11298 Fixed a reported problem where reference counts within the
11299 namespace were not properly updated when named objects created by
11300 method execution were deleted.
11302 Fixed a reported problem where multiple SSDTs caused a deletion
11303 issue during subsystem termination. Restructured the table data
11304 structures to simplify the linked lists and the related code.
11306 Fixed a problem where the table ID associated with secondary
11307 tables (SSDTs) was not being propagated into the namespace objects
11308 created by those tables. This would only present a problem for
11309 tables that are unloaded at run-time, however.
11311 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11312 type as the length parameter (instead of UINT32).
11314 Solved a long-standing problem where an ALREADY_EXISTS error
11315 appears on various systems. This problem could happen when there
11316 are multiple PCI_Config operation regions under a single PCI root
11317 bus. This doesn't happen very frequently, but there are some
11318 systems that do this in the ASL.
11320 Fixed a reported problem where the internal DeleteNode function
11321 was incorrectly handling the case where a namespace node was the
11322 first in the parent's child list, and had additional peers (not
11323 the only child, but first in the list of children.)
11325 Code and Data Size: Current core subsystem library sizes are shown
11326 below. These are the code and data sizes for the acpica.lib
11327 produced by the Microsoft Visual C++ 6.0 compiler, and these
11328 values do not include any ACPI driver or OSPM code. The debug
11329 version of the code includes the debug output trace mechanism and
11330 has a much larger code and data size. Note that these values will
11331 vary depending on the efficiency of the compiler and the compiler
11332 options used during generation.
11335 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11336 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11338 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11339 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11344 Allow ":" in OS override string (Ducrot Bruno)
11346 Kobject fix (Greg KH)
11349 3 iASL Compiler/Disassembler:
11351 Fixed a problem in the generation of the C source code files (AML
11352 is emitted in C source statements for BIOS inclusion) where the
11353 Ascii dump that appears within a C comment at the end of each line
11354 could cause a compile time error if the AML sequence happens to
11355 have an open comment or close comment sequence embedded.
11358 ----------------------------------------
11359 24 April 2003. Summary of changes for version 20030424.
11362 1) ACPI CA Core Subsystem:
11364 Support for big-endian systems has been implemented. Most of the
11365 support has been invisibly added behind big-endian versions of the
11366 ACPI_MOVE_* macros.
11368 Fixed a problem in AcpiHwDisableGpeBlock() and
11369 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11370 low level hardware write routine. The offset parameter was
11371 actually eliminated from the low level read/write routines because
11372 they had become obsolete.
11374 Fixed a problem where a handler object was deleted twice during
11375 the removal of a fixed event handler.
11380 A fix for SMP systems with link devices was contributed by
11384 (2.5) Return whether we handled the interrupt in our IRQ handler.
11385 (Linux ISRs no longer return void, so we can propagate the handler
11386 return value from the ACPI CA core back to the OS.)
11392 The ACPI CA Programmer Reference has been updated to reflect new
11393 interfaces and changes to existing interfaces.
11395 ----------------------------------------
11396 28 March 2003. Summary of changes for version 20030328.
11398 1) ACPI CA Core Subsystem:
11400 The GPE Block Device support has been completed. New interfaces
11401 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11402 interfaces (enable, disable, clear, getstatus) have been split
11403 into separate interfaces for Fixed Events and General Purpose
11404 Events (GPEs) in order to support GPE Block Devices properly.
11406 Fixed a problem where the error message "Failed to acquire
11407 semaphore" would appear during operations on the embedded
11410 Code and Data Size: Current core subsystem library sizes are shown
11411 below. These are the code and data sizes for the acpica.lib
11412 produced by the Microsoft Visual C++ 6.0 compiler, and these
11413 values do not include any ACPI driver or OSPM code. The debug
11414 version of the code includes the debug output trace mechanism and
11415 has a much larger code and data size. Note that these values will
11416 vary depending on the efficiency of the compiler and the compiler
11417 options used during generation.
11420 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11421 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11423 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11424 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11427 ----------------------------------------
11428 28 February 2003. Summary of changes for version 20030228.
11431 1) ACPI CA Core Subsystem:
11433 The GPE handling and dispatch code has been completely overhauled
11434 in preparation for support of GPE Block Devices (ID ACPI0006).
11435 This affects internal data structures and code only; there should
11436 be no differences visible externally. One new file has been
11439 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11440 fields that are used to determine the GPE block lengths. The
11441 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11442 structures are ignored. This is per the ACPI specification but it
11443 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11444 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11446 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11447 register to look at the SCI_EN bit. On some machines, this read
11448 causes an SMI event and greatly slows down SCI events. (This may
11449 in fact be the cause of slow battery status response on some
11452 Fixed a problem where a store of a NULL string to a package object
11453 could cause the premature deletion of the object. This was seen
11454 during execution of the battery _BIF method on some systems,
11455 resulting in no battery data being returned.
11457 Added AcpiWalkResources interface to simplify parsing of resource
11460 Code and Data Size: Current core subsystem library sizes are shown
11461 below. These are the code and data sizes for the acpica.lib
11462 produced by the Microsoft Visual C++ 6.0 compiler, and these
11463 values do not include any ACPI driver or OSPM code. The debug
11464 version of the code includes the debug output trace mechanism and
11465 has a much larger code and data size. Note that these values will
11466 vary depending on the efficiency of the compiler and the compiler
11467 options used during generation.
11470 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11471 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11473 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11474 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11479 S3 fixes (Ole Rohne)
11481 Update ACPI PHP driver with to use new acpi_walk_resource API
11484 Add S4BIOS support (Pavel Machek)
11486 Map in entire table before performing checksum (John Stultz)
11488 Expand the mem= cmdline to allow the specification of reserved and
11489 ACPI DATA blocks (Pavel Machek)
11491 Never use ACPI on VISWS
11493 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
11495 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
11496 causing us to think that some systems support C2 when they really
11499 Do not count processor objects for non-present CPUs (Thanks to
11505 Fixed a problem where ASL include files could not be found and
11508 Added support for the _PDC reserved name.
11511 ----------------------------------------
11512 22 January 2003. Summary of changes for version 20030122.
11515 1) ACPI CA Core Subsystem:
11517 Added a check for constructs of the form: Store (Local0, Local0)
11518 where Local0 is not initialized. Apparently, some BIOS
11519 programmers believe that this is a NOOP. Since this store doesn't
11520 do anything anyway, the new prototype behavior will ignore this
11521 error. This is a case where we can relax the strict checking in
11522 the interpreter in the name of compatibility.
11527 The AcpiSrc Source Conversion Utility has been released with the
11528 Linux package for the first time. This is the utility that is
11529 used to convert the ACPI CA base source code to the Linux version.
11531 (Both) Handle P_BLK lengths shorter than 6 more gracefully
11533 (Both) Move more headers to include/acpi, and delete an unused
11536 (Both) Move drivers/acpi/include directory to include/acpi
11538 (Both) Boot functions don't use cmdline, so don't pass it around
11540 (Both) Remove include of unused header (Adrian Bunk)
11542 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
11544 former now also includes the latter, acpiphp.h only needs the one,
11547 (2.5) Make it possible to select method of bios restoring after S3
11548 resume. [=> no more ugly ifdefs] (Pavel Machek)
11550 (2.5) Make proc write interfaces work (Pavel Machek)
11552 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
11554 (2.5) Break out ACPI Perf code into its own module, under cpufreq
11555 (Dominik Brodowski)
11557 (2.4) S4BIOS support (Ducrot Bruno)
11559 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
11565 Added support to disassemble SSDT and PSDTs.
11567 Implemented support to obtain SSDTs from the Windows registry if
11571 ----------------------------------------
11572 09 January 2003. Summary of changes for version 20030109.
11574 1) ACPI CA Core Subsystem:
11576 Changed the behavior of the internal Buffer-to-String conversion
11577 function. The current ACPI specification states that the contents
11578 of the buffer are "converted to a string of two-character
11579 hexadecimal numbers, each separated by a space". Unfortunately,
11580 this definition is not backwards compatible with existing ACPI 1.0
11581 implementations (although the behavior was not defined in the ACPI
11582 1.0 specification). The new behavior simply copies data from the
11583 buffer to the string until a null character is found or the end of
11584 the buffer is reached. The new String object is always null
11585 terminated. This problem was seen during the generation of _BIF
11586 battery data where incorrect strings were returned for battery
11587 type, etc. This will also require an errata to the ACPI
11590 Renamed all instances of NATIVE_UINT and NATIVE_INT to
11591 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
11593 Copyright in all module headers (both Linux and non-Linux) has be
11596 Code and Data Size: Current core subsystem library sizes are shown
11597 below. These are the code and data sizes for the acpica.lib
11598 produced by the Microsoft Visual C++ 6.0 compiler, and these
11599 values do not include any ACPI driver or OSPM code. The debug
11600 version of the code includes the debug output trace mechanism and
11601 has a much larger code and data size. Note that these values will
11602 vary depending on the efficiency of the compiler and the compiler
11603 options used during generation.
11606 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11607 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11609 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11610 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11615 Fixed an oops on module insertion/removal (Matthew Tippett)
11617 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
11619 (2.5) Replace pr_debug (Randy Dunlap)
11621 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
11623 (Both) Eliminate spawning of thread from timer callback, in favor
11626 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
11628 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
11630 (Both) Add missing statics to button.c (Pavel Machek)
11632 Several changes have been made to the source code translation
11633 utility that generates the Linux Code in order to make the code
11636 All typedefs on structs and unions have been removed in keeping
11637 with the Linux coding style.
11639 Removed the non-Linux SourceSafe module revision number from each
11642 Completed major overhaul of symbols to be lowercased for linux.
11643 Doubled the number of symbols that are lowercased.
11645 Fixed a problem where identifiers within procedure headers and
11646 within quotes were not fully lower cased (they were left with a
11649 Some C macros whose only purpose is to allow the generation of 16-
11650 bit code are now completely removed in the Linux code, increasing
11651 readability and maintainability.
11653 ----------------------------------------
11655 12 December 2002. Summary of changes for version 20021212.
11658 1) ACPI CA Core Subsystem:
11660 Fixed a problem where the creation of a zero-length AML Buffer
11661 would cause a fault.
11663 Fixed a problem where a Buffer object that pointed to a static AML
11664 buffer (in an ACPI table) could inadvertently be deleted, causing
11667 Fixed a problem where a user buffer (passed in to the external
11668 ACPI CA interfaces) could be overwritten if the buffer was too
11669 small to complete the operation, causing memory corruption.
11671 Fixed a problem in the Buffer-to-String conversion code where a
11672 string of length one was always returned, regardless of the size
11673 of the input Buffer object.
11675 Removed the NATIVE_CHAR data type across the entire source due to
11676 lack of need and lack of consistent use.
11678 Code and Data Size: Current core subsystem library sizes are shown
11679 below. These are the code and data sizes for the acpica.lib
11680 produced by the Microsoft Visual C++ 6.0 compiler, and these
11681 values do not include any ACPI driver or OSPM code. The debug
11682 version of the code includes the debug output trace mechanism and
11683 has a much larger code and data size. Note that these values will
11684 vary depending on the efficiency of the compiler and the compiler
11685 options used during generation.
11688 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11689 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11691 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
11692 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
11695 ----------------------------------------
11696 05 December 2002. Summary of changes for version 20021205.
11698 1) ACPI CA Core Subsystem:
11700 Fixed a problem where a store to a String or Buffer object could
11701 cause corruption of the DSDT if the object type being stored was
11702 the same as the target object type and the length of the object
11703 being stored was equal to or smaller than the original (existing)
11704 target object. This was seen to cause corruption of battery _BIF
11705 buffers if the _BIF method modified the buffer on the fly.
11707 Fixed a problem where an internal error was generated if a control
11708 method invocation was used in an OperationRegion, Buffer, or
11709 Package declaration. This was caused by the deferred parsing of
11710 the control method and thus the deferred creation of the internal
11711 method object. The solution to this problem was to create the
11712 internal method object at the moment the method is encountered in
11713 the first pass - so that subsequent references to the method will
11714 able to obtain the required parameter count and thus properly
11715 parse the method invocation. This problem presented itself as an
11716 AE_AML_INTERNAL during the pass 1 parse phase during table load.
11718 Fixed a problem where the internal String object copy routine did
11719 not always allocate sufficient memory for the target String object
11720 and caused memory corruption. This problem was seen to cause
11721 "Allocation already present in list!" errors as memory allocation
11724 Implemented a new function for the evaluation of namespace objects
11725 that allows the specification of the allowable return object
11726 types. This simplifies a lot of code that checks for a return
11727 object of one or more specific objects returned from the
11728 evaluation (such as _STA, etc.) This may become and external
11729 function if it would be useful to ACPI-related drivers.
11731 Completed another round of prefixing #defines with "ACPI_" for
11734 Completed additional code restructuring to allow more modular
11735 linking for iASL compiler and AcpiExec. Several files were split
11736 creating new files. New files: nsparse.c dsinit.c evgpe.c
11738 Implemented an abort mechanism to terminate an executing control
11739 method via the AML debugger. This feature is useful for debugging
11740 control methods that depend (wait) for specific hardware
11743 Code and Data Size: Current core subsystem library sizes are shown
11744 below. These are the code and data sizes for the acpica.lib
11745 produced by the Microsoft Visual C++ 6.0 compiler, and these
11746 values do not include any ACPI driver or OSPM code. The debug
11747 version of the code includes the debug output trace mechanism and
11748 has a much larger code and data size. Note that these values will
11749 vary depending on the efficiency of the compiler and the compiler
11750 options used during generation.
11753 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11754 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11756 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
11757 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
11760 2) iASL Compiler/Disassembler
11762 Fixed a compiler code generation problem for "Interrupt" Resource
11763 Descriptors. If specified in the ASL, the optional "Resource
11764 Source Index" and "Resource Source" fields were not inserted into
11765 the correct location within the AML resource descriptor, creating
11766 an invalid descriptor.
11768 Fixed a disassembler problem for "Interrupt" resource descriptors.
11769 The optional "Resource Source Index" and "Resource Source" fields
11773 ----------------------------------------
11774 22 November 2002. Summary of changes for version 20021122.
11777 1) ACPI CA Core Subsystem:
11779 Fixed a reported problem where an object stored to a Method Local
11780 or Arg was not copied to a new object during the store - the
11781 object pointer was simply copied to the Local/Arg. This caused
11782 all subsequent operations on the Local/Arg to also affect the
11783 original source of the store operation.
11785 Fixed a problem where a store operation to a Method Local or Arg
11786 was not completed properly if the Local/Arg contained a reference
11787 (from RefOf) to a named field. The general-purpose store-to-
11788 namespace-node code is now used so that this case is handled
11791 Fixed a problem where the internal object copy routine would cause
11792 a protection fault if the object being copied was a Package and
11793 contained either 1) a NULL package element or 2) a nested sub-
11796 Fixed a problem with the GPE initialization that resulted from an
11797 ambiguity in the ACPI specification. One section of the
11798 specification states that both the address and length of the GPE
11799 block must be zero if the block is not supported. Another section
11800 implies that only the address need be zero if the block is not
11801 supported. The code has been changed so that both the address and
11802 the length must be non-zero to indicate a valid GPE block (i.e.,
11803 if either the address or the length is zero, the GPE block is
11806 Code and Data Size: Current core subsystem library sizes are shown
11807 below. These are the code and data sizes for the acpica.lib
11808 produced by the Microsoft Visual C++ 6.0 compiler, and these
11809 values do not include any ACPI driver or OSPM code. The debug
11810 version of the code includes the debug output trace mechanism and
11811 has a much larger code and data size. Note that these values will
11812 vary depending on the efficiency of the compiler and the compiler
11813 options used during generation.
11816 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11817 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11819 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11820 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
11825 Cleaned up EC driver. Exported an external EC read/write
11826 interface. By going through this, other drivers (most notably
11827 sonypi) will be able to serialize access to the EC.
11830 3) iASL Compiler/Disassembler
11832 Implemented support to optionally generate include files for both
11833 ASM and C (the -i switch). This simplifies BIOS development by
11834 automatically creating include files that contain external
11835 declarations for the symbols that are created within the
11837 (optionally generated) ASM and C AML source files.
11840 ----------------------------------------
11841 15 November 2002. Summary of changes for version 20021115.
11843 1) ACPI CA Core Subsystem:
11845 Fixed a memory leak problem where an error during resolution of
11847 method arguments during a method invocation from another method
11848 failed to cleanup properly by deleting all successfully resolved
11851 Fixed a problem where the target of the Index() operator was not
11852 correctly constructed if the source object was a package. This
11853 problem has not been detected because the use of a target operand
11854 with Index() is very rare.
11856 Fixed a problem with the Index() operator where an attempt was
11857 made to delete the operand objects twice.
11859 Fixed a problem where an attempt was made to delete an operand
11860 twice during execution of the CondRefOf() operator if the target
11863 Implemented the first of perhaps several internal create object
11864 functions that create and initialize a specific object type. This
11865 consolidates duplicated code wherever the object is created, thus
11866 shrinking the size of the subsystem.
11868 Implemented improved debug/error messages for errors that occur
11869 during nested method invocations. All executing method pathnames
11870 are displayed (with the error) as the call stack is unwound - thus
11873 Fixed a problem introduced in the 10/02 release that caused
11874 premature deletion of a buffer object if a buffer was used as an
11875 ASL operand where an integer operand is required (Thus causing an
11876 implicit object conversion from Buffer to Integer.) The change in
11877 the 10/02 release was attempting to fix a memory leak (albeit
11880 Code and Data Size: Current core subsystem library sizes are shown
11881 below. These are the code and data sizes for the acpica.lib
11882 produced by the Microsoft Visual C++ 6.0 compiler, and these
11883 values do not include any ACPI driver or OSPM code. The debug
11884 version of the code includes the debug output trace mechanism and
11885 has a much larger code and data size. Note that these values will
11886 vary depending on the efficiency of the compiler and the compiler
11887 options used during generation.
11890 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11891 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11893 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
11894 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
11899 Changed the implementation of the ACPI semaphores to use down()
11900 instead of down_interruptable(). It is important that the
11901 execution of ACPI control methods not be interrupted by signals.
11902 Methods must run to completion, or the system may be left in an
11903 unknown/unstable state.
11905 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
11909 3) iASL Compiler/Disassembler
11912 Changed the default location of output files. All output files
11913 are now placed in the current directory by default instead of in
11914 the directory of the source file. This change may affect some
11915 existing makefiles, but it brings the behavior of the compiler in
11916 line with other similar tools. The location of the output files
11917 can be overridden with the -p command line switch.
11920 ----------------------------------------
11921 11 November 2002. Summary of changes for version 20021111.
11924 0) ACPI Specification 2.0B is released and is now available at:
11925 http://www.acpi.info/index.html
11928 1) ACPI CA Core Subsystem:
11930 Implemented support for the ACPI 2.0 SMBus Operation Regions.
11931 This includes the early detection and handoff of the request to
11932 the SMBus region handler (avoiding all of the complex field
11933 support code), and support for the bidirectional return packet
11934 from an SMBus write operation. This paves the way for the
11935 development of SMBus drivers in each host operating system.
11937 Fixed a problem where the semaphore WAIT_FOREVER constant was
11938 defined as 32 bits, but must be 16 bits according to the ACPI
11939 specification. This had the side effect of causing ASL
11940 Mutex/Event timeouts even though the ASL code requested a wait
11941 forever. Changed all internal references to the ACPI timeout
11942 parameter to 16 bits to prevent future problems. Changed the name
11943 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
11945 Code and Data Size: Current core subsystem library sizes are shown
11946 below. These are the code and data sizes for the acpica.lib
11947 produced by the Microsoft Visual C++ 6.0 compiler, and these
11948 values do not include any ACPI driver or OSPM code. The debug
11949 version of the code includes the debug output trace mechanism and
11950 has a much larger code and data size. Note that these values will
11951 vary depending on the efficiency of the compiler and the compiler
11952 options used during generation.
11955 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
11956 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
11958 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
11959 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
11964 Module loading/unloading fixes (John Cagle)
11967 3) iASL Compiler/Disassembler
11969 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
11971 Implemented support for the disassembly of all SMBus protocol
11972 keywords (SMBQuick, SMBWord, etc.)
11974 ----------------------------------------
11975 01 November 2002. Summary of changes for version 20021101.
11978 1) ACPI CA Core Subsystem:
11980 Fixed a problem where platforms that have a GPE1 block but no GPE0
11981 block were not handled correctly. This resulted in a "GPE
11982 overlap" error message. GPE0 is no longer required.
11984 Removed code added in the previous release that inserted nodes
11985 into the namespace in alphabetical order. This caused some side-
11986 effects on various machines. The root cause of the problem is
11987 still under investigation since in theory, the internal ordering
11988 of the namespace nodes should not matter.
11991 Enhanced error reporting for the case where a named object is not
11992 found during control method execution. The full ACPI namepath
11993 (name reference) of the object that was not found is displayed in
11996 Note: as a result of the overhaul of the namespace object types in
11997 the previous release, the namespace nodes for the predefined
11998 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
11999 instead of ACPI_TYPE_ANY. This simplifies the namespace
12000 management code but may affect code that walks the namespace tree
12001 looking for specific object types.
12003 Code and Data Size: Current core subsystem library sizes are shown
12004 below. These are the code and data sizes for the acpica.lib
12005 produced by the Microsoft Visual C++ 6.0 compiler, and these
12006 values do not include any ACPI driver or OSPM code. The debug
12007 version of the code includes the debug output trace mechanism and
12008 has a much larger code and data size. Note that these values will
12009 vary depending on the efficiency of the compiler and the compiler
12010 options used during generation.
12013 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12014 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12016 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12017 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12022 Fixed a problem introduced in the previous release where the
12023 Processor and Thermal objects were not recognized and installed in
12024 /proc. This was related to the scope type change described above.
12027 3) iASL Compiler/Disassembler
12029 Implemented the -g option to get all of the required ACPI tables
12030 from the registry and save them to files (Windows version of the
12031 compiler only.) The required tables are the FADT, FACS, and DSDT.
12033 Added ACPI table checksum validation during table disassembly in
12034 order to catch corrupted tables.
12037 ----------------------------------------
12038 22 October 2002. Summary of changes for version 20021022.
12040 1) ACPI CA Core Subsystem:
12042 Implemented a restriction on the Scope operator that the target
12043 must already exist in the namespace at the time the operator is
12044 encountered (during table load or method execution). In other
12045 words, forward references are not allowed and Scope() cannot
12046 create a new object. This changes the previous behavior where the
12047 interpreter would create the name if not found. This new behavior
12048 correctly enables the search-to-root algorithm during namespace
12049 lookup of the target name. Because of this upsearch, this fixes
12050 the known Compaq _SB_.OKEC problem and makes both the AML
12051 interpreter and iASL compiler compatible with other ACPI
12054 Completed a major overhaul of the internal ACPI object types for
12055 the ACPI Namespace and the associated operand objects. Many of
12056 these types had become obsolete with the introduction of the two-
12057 pass namespace load. This cleanup simplifies the code and makes
12058 the entire namespace load mechanism much clearer and easier to
12061 Improved debug output for tracking scope opening/closing to help
12062 diagnose scoping issues. The old scope name as well as the new
12063 scope name are displayed. Also improved error messages for
12064 problems with ASL Mutex objects and error messages for GPE
12067 Cleaned up the namespace dump code, removed obsolete code.
12069 All string output (for all namespace/object dumps) now uses the
12070 common ACPI string output procedure which handles escapes properly
12071 and does not emit non-printable characters.
12073 Fixed some issues with constants in the 64-bit version of the
12074 local C library (utclib.c)
12079 EC Driver: No longer attempts to acquire the Global Lock at
12083 3) iASL Compiler/Disassembler
12085 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12086 2 opcodes outside of a control method. This means that the
12087 "executable" operators (versus the "namespace" operators) cannot
12088 be used at the table level; they can only be used within a control
12091 Implemented the restriction on the Scope() operator where the
12092 target must already exist in the namespace at the time the
12093 operator is encountered (during ASL compilation). In other words,
12094 forward references are not allowed and Scope() cannot create a new
12095 object. This makes the iASL compiler compatible with other ACPI
12096 implementations and makes the Scope() implementation adhere to the
12097 ACPI specification.
12099 Fixed a problem where namepath optimization for the Alias operator
12100 was optimizing the wrong path (of the two namepaths.) This caused
12101 a "Missing alias link" error message.
12103 Fixed a problem where an "unknown reserved name" warning could be
12104 incorrectly generated for names like "_SB" when the trailing
12105 underscore is not used in the original ASL.
12107 Fixed a problem where the reserved name check did not handle
12108 NamePaths with multiple NameSegs correctly. The first nameseg of
12109 the NamePath was examined instead of the last NameSeg.
12112 ----------------------------------------
12114 02 October 2002. Summary of changes for this release.
12117 1) ACPI CA Core Subsystem version 20021002:
12119 Fixed a problem where a store/copy of a string to an existing
12120 string did not always set the string length properly in the String
12123 Fixed a reported problem with the ToString operator where the
12124 behavior was identical to the ToHexString operator instead of just
12125 simply converting a raw buffer to a string data type.
12127 Fixed a problem where CopyObject and the other "explicit"
12128 conversion operators were not updating the internal namespace node
12129 type as part of the store operation.
12131 Fixed a memory leak during implicit source operand conversion
12132 where the original object was not deleted if it was converted to a
12133 new object of a different type.
12135 Enhanced error messages for all problems associated with namespace
12136 lookups. Common procedure generates and prints the lookup name as
12137 well as the formatted status.
12139 Completed implementation of a new design for the Alias support
12140 within the namespace. The existing design did not handle the case
12141 where a new object was assigned to one of the two names due to the
12142 use of an explicit conversion operator, resulting in the two names
12143 pointing to two different objects. The new design simply points
12144 the Alias name to the original name node - not to the object.
12145 This results in a level of indirection that must be handled in the
12146 name resolution mechanism.
12148 Code and Data Size: Current core subsystem library sizes are shown
12149 below. These are the code and data sizes for the acpica.lib
12150 produced by the Microsoft Visual C++ 6.0 compiler, and these
12151 values do not include any ACPI driver or OSPM code. The debug
12152 version of the code includes the debug output trace mechanism and
12153 has a larger code and data size. Note that these values will vary
12154 depending on the efficiency of the compiler and the compiler
12155 options used during generation.
12158 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12159 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12161 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12162 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12167 Initialize thermal driver's timer before it is used. (Knut
12170 Allow handling negative celsius values. (Kochi Takayoshi)
12172 Fix thermal management and make trip points. R/W (Pavel Machek)
12174 Fix /proc/acpi/sleep. (P. Christeas)
12176 IA64 fixes. (David Mosberger)
12178 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12180 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12184 3) iASL Compiler/Disassembler
12186 Clarified some warning/error messages.
12189 ----------------------------------------
12190 18 September 2002. Summary of changes for this release.
12193 1) ACPI CA Core Subsystem version 20020918:
12195 Fixed a reported problem with reference chaining (via the Index()
12196 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12197 The definition of these operators includes the dereferencing of
12198 all chained references to return information on the base object.
12200 Fixed a problem with stores to indexed package elements - the
12201 existing code would not complete the store if an "implicit
12202 conversion" was not performed. In other words, if the existing
12203 object (package element) was to be replaced completely, the code
12204 didn't handle this case.
12206 Relaxed typechecking on the ASL "Scope" operator to allow the
12207 target name to refer to an object of type Integer, String, or
12208 Buffer, in addition to the scoping object types (Device,
12209 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12210 This allows existing AML code that has workarounds for a bug in
12211 Windows to function properly. A warning is issued, however. This
12212 affects both the AML interpreter and the iASL compiler. Below is
12213 an example of this type of ASL code:
12219 Fixed some reported problems with 64-bit integer support in the
12220 local implementation of C library functions (clib.c)
12225 Use ACPI fix map region instead of IOAPIC region, since it is
12226 undefined in non-SMP.
12228 Ensure that the SCI has the proper polarity and trigger, even on
12229 systems that do not have an interrupt override entry in the MADT.
12231 2.5 big driver reorganization (Pat Mochel)
12233 Use early table mapping code from acpitable.c (Andi Kleen)
12235 New blacklist entries (Andi Kleen)
12237 Blacklist improvements. Split blacklist code out into a separate
12238 file. Move checking the blacklist to very early. Previously, we
12239 would use ACPI tables, and then halfway through init, check the
12240 blacklist -- too late. Now, it's early enough to completely fall-
12244 3) iASL Compiler/Disassembler version 20020918:
12246 Fixed a problem where the typechecking code didn't know that an
12247 alias could point to a method. In other words, aliases were not
12248 being dereferenced during typechecking.
12251 ----------------------------------------
12252 29 August 2002. Summary of changes for this release.
12254 1) ACPI CA Core Subsystem Version 20020829:
12256 If the target of a Scope() operator already exists, it must be an
12257 object type that actually opens a scope -- such as a Device,
12258 Method, Scope, etc. This is a fatal runtime error. Similar error
12259 check has been added to the iASL compiler also.
12261 Tightened up the namespace load to disallow multiple names in the
12262 same scope. This previously was allowed if both objects were of
12263 the same type. (i.e., a lookup was the same as entering a new
12269 Ensure that the ACPI interrupt has the proper trigger and
12272 local_irq_disable is extraneous. (Matthew Wilcox)
12274 Make "acpi=off" actually do what it says, and not use the ACPI
12275 interpreter *or* the tables.
12277 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12281 3) iASL Compiler/Disassembler Version 20020829:
12283 Implemented namepath optimization for name declarations. For
12284 example, a declaration like "Method (\_SB_.ABCD)" would get
12285 optimized to "Method (ABCD)" if the declaration is within the
12286 \_SB_ scope. This optimization is in addition to the named
12287 reference path optimization first released in the previous
12288 version. This would seem to complete all possible optimizations
12289 for namepaths within the ASL/AML.
12291 If the target of a Scope() operator already exists, it must be an
12292 object type that actually opens a scope -- such as a Device,
12293 Method, Scope, etc.
12295 Implemented a check and warning for unreachable code in the same
12296 block below a Return() statement.
12298 Fixed a problem where the listing file was not generated if the
12299 compiler aborted if the maximum error count was exceeded (200).
12301 Fixed a problem where the typechecking of method return values was
12302 broken. This includes the check for a return value when the
12303 method is invoked as a TermArg (a return value is expected.)
12305 Fixed a reported problem where EOF conditions during a quoted
12306 string or comment caused a fault.
12309 ----------------------------------------
12310 15 August 2002. Summary of changes for this release.
12312 1) ACPI CA Core Subsystem Version 20020815:
12314 Fixed a reported problem where a Store to a method argument that
12315 contains a reference did not perform the indirect store correctly.
12316 This problem was created during the conversion to the new
12317 reference object model - the indirect store to a method argument
12318 code was not updated to reflect the new model.
12320 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12321 handle corner cases, and improve code legibility (Kochi Takayoshi)
12323 Fixed a problem with the pathname parsing for the carat (^)
12324 prefix. The heavy use of the carat operator by the new namepath
12325 optimization in the iASL compiler uncovered a problem with the AML
12326 interpreter handling of this prefix. In the case where one or
12327 more carats precede a single nameseg, the nameseg was treated as
12328 standalone and the search rule (to root) was inadvertently
12329 applied. This could cause both the iASL compiler and the
12330 interpreter to find the wrong object or to miss the error that
12331 should occur if the object does not exist at that exact pathname.
12333 Found and fixed the problem where the HP Pavilion DSDT would not
12334 load. This was a relatively minor tweak to the table loading code
12335 (a problem caused by the unexpected encounter with a method
12336 invocation not within a control method), but it does not solve the
12337 overall issue of the execution of AML code at the table level.
12338 This investigation is still ongoing.
12340 Code and Data Size: Current core subsystem library sizes are shown
12341 below. These are the code and data sizes for the acpica.lib
12342 produced by the Microsoft Visual C++ 6.0 compiler, and these
12343 values do not include any ACPI driver or OSPM code. The debug
12344 version of the code includes the debug output trace mechanism and
12345 has a larger code and data size. Note that these values will vary
12346 depending on the efficiency of the compiler and the compiler
12347 options used during generation.
12350 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12351 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12353 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12354 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12359 Remove redundant slab.h include (Brad Hards)
12361 Fix several bugs in thermal.c (Herbert Nachtnebel)
12363 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12365 Change acpi_system_suspend to use updated irq functions (Pavel
12368 Export acpi_get_firmware_table (Matthew Wilcox)
12370 Use proper root proc entry for ACPI (Kochi Takayoshi)
12372 Fix early-boot table parsing (Bjorn Helgaas)
12375 3) iASL Compiler/Disassembler
12377 Reworked the compiler options to make them more consistent and to
12378 use two-letter options where appropriate. We were running out of
12379 sensible letters. This may break some makefiles, so check the
12380 current options list by invoking the compiler with no parameters.
12382 Completed the design and implementation of the ASL namepath
12383 optimization option for the compiler. This option optimizes all
12384 references to named objects to the shortest possible path. The
12385 first attempt tries to utilize a single nameseg (4 characters) and
12386 the "search-to-root" algorithm used by the interpreter. If that
12387 cannot be used (because either the name is not in the search path
12388 or there is a conflict with another object with the same name),
12389 the pathname is optimized using the carat prefix (usually a
12390 shorter string than specifying the entire path from the root.)
12392 Implemented support to obtain the DSDT from the Windows registry
12393 (when the disassembly option is specified with no input file).
12394 Added this code as the implementation for AcpiOsTableOverride in
12395 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12396 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12397 function in the DOS OSL to make the disassembler truly OS
12400 Implemented a new option to disassemble and compile in one step.
12401 When used without an input filename, this option will grab the
12402 DSDT from the local machine, disassemble it, and compile it in one
12405 Added a warning message for invalid escapes (a backslash followed
12406 by any character other than the allowable escapes). This catches
12407 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12409 Also, there are numerous instances in the ACPI specification where
12412 Added a compiler option to disable all optimizations. This is
12413 basically the "compatibility mode" because by using this option,
12414 the AML code will come out exactly the same as other ASL
12417 Added error messages for incorrectly ordered dependent resource
12418 functions. This includes: missing EndDependentFn macro at end of
12419 dependent resource list, nested dependent function macros (both
12420 start and end), and missing StartDependentFn macro. These are
12421 common errors that should be caught at compile time.
12423 Implemented _OSI support for the disassembler and compiler. _OSI
12424 must be included in the namespace for proper disassembly (because
12425 the disassembler must know the number of arguments.)
12427 Added an "optimization" message type that is optional (off by
12428 default). This message is used for all optimizations - including
12429 constant folding, integer optimization, and namepath optimization.
12431 ----------------------------------------
12432 25 July 2002. Summary of changes for this release.
12435 1) ACPI CA Core Subsystem Version 20020725:
12437 The AML Disassembler has been enhanced to produce compilable ASL
12438 code and has been integrated into the iASL compiler (see below) as
12439 well as the single-step disassembly for the AML debugger and the
12440 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12441 resource templates and macros are fully supported. The
12442 disassembler has been tested on over 30 different AML files,
12443 producing identical AML when the resulting disassembled ASL file
12444 is recompiled with the same ASL compiler.
12446 Modified the Resource Manager to allow zero interrupts and zero
12447 dma channels during the GetCurrentResources call. This was
12448 causing problems on some platforms.
12450 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12451 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12454 Code and Data Size: Current core subsystem library sizes are shown
12455 below. These are the code and data sizes for the acpica.lib
12456 produced by the Microsoft Visual C++ 6.0 compiler, and these
12457 values do not include any ACPI driver or OSPM code. The debug
12458 version of the code includes the debug output trace mechanism and
12459 has a larger code and data size. Note that these values will vary
12460 depending on the efficiency of the compiler and the compiler
12461 options used during generation.
12464 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12465 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12467 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12468 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12473 Fixed a panic in the EC driver (Dominik Brodowski)
12475 Implemented checksum of the R/XSDT itself during Linux table scan
12481 The AML disassembler is integrated into the compiler. The "-d"
12482 option invokes the disassembler to completely disassemble an
12483 input AML file, producing as output a text ASL file with the
12484 extension ".dsl" (to avoid name collisions with existing .asl
12485 source files.) A future enhancement will allow the disassembler
12486 to obtain the BIOS DSDT from the registry under Windows.
12488 Fixed a problem with the VendorShort and VendorLong resource
12489 descriptors where an invalid AML sequence was created.
12491 Implemented a fix for BufferData term in the ASL parser. It was
12492 inadvertently defined twice, allowing invalid syntax to pass and
12493 causing reduction conflicts.
12495 Fixed a problem where the Ones opcode could get converted to a
12496 value of zero if "Ones" was used where a byte, word or dword value
12497 was expected. The 64-bit value is now truncated to the correct
12498 size with the correct value.
12502 ----------------------------------------
12503 02 July 2002. Summary of changes for this release.
12506 1) ACPI CA Core Subsystem Version 20020702:
12508 The Table Manager code has been restructured to add several new
12509 features. Tables that are not required by the core subsystem
12510 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
12511 validated in any way and are returned from AcpiGetFirmwareTable if
12512 requested. The AcpiOsTableOverride interface is now called for
12513 each table that is loaded by the subsystem in order to allow the
12514 host to override any table it chooses. Previously, only the DSDT
12515 could be overridden. Added one new files, tbrsdt.c and
12518 Fixed a problem with the conversion of internal package objects to
12519 external objects (when a package is returned from a control
12520 method.) The return buffer length was set to zero instead of the
12521 proper length of the package object.
12523 Fixed a reported problem with the use of the RefOf and DeRefOf
12524 operators when passing reference arguments to control methods. A
12525 new type of Reference object is used internally for references
12526 produced by the RefOf operator.
12528 Added additional error messages in the Resource Manager to explain
12529 AE_BAD_DATA errors when they occur during resource parsing.
12531 Split the AcpiEnableSubsystem into two primitives to enable a
12532 finer granularity initialization sequence. These two calls should
12533 be called in this order: AcpiEnableSubsystem (flags),
12534 AcpiInitializeObjects (flags). The flags parameter remains the
12540 Updated the ACPI utilities module to understand the new style of
12541 fully resolved package objects that are now returned from the core
12542 subsystem. This eliminates errors of the form:
12544 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
12545 acpi_utils-0430 [145] acpi_evaluate_reference:
12546 Invalid element in package (not a device reference)
12548 The method evaluation utility uses the new buffer allocation
12549 scheme instead of calling AcpiEvaluate Object twice.
12551 Added support for ECDT. This allows the use of the Embedded
12553 Controller before the namespace has been fully initialized, which
12554 is necessary for ACPI 2.0 support, and for some laptops to
12555 initialize properly. (Laptops using ECDT are still rare, so only
12556 limited testing was performed of the added functionality.)
12558 Fixed memory leaks in the EC driver.
12560 Eliminated a brittle code structure in acpi_bus_init().
12562 Eliminated the acpi_evaluate() helper function in utils.c. It is
12563 no longer needed since acpi_evaluate_object can optionally
12564 allocate memory for the return object.
12566 Implemented fix for keyboard hang when getting battery readings on
12567 some systems (Stephen White)
12569 PCI IRQ routing update (Dominik Brodowski)
12571 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
12574 ----------------------------------------
12575 11 June 2002. Summary of changes for this release.
12578 1) ACPI CA Core Subsystem Version 20020611:
12580 Fixed a reported problem where constants such as Zero and One
12581 appearing within _PRT packages were not handled correctly within
12582 the resource manager code. Originally reported against the ASL
12583 compiler because the code generator now optimizes integers to
12584 their minimal AML representation (i.e. AML constants if possible.)
12585 The _PRT code now handles all AML constant opcodes correctly
12586 (Zero, One, Ones, Revision).
12588 Fixed a problem with the Concatenate operator in the AML
12589 interpreter where a buffer result object was incorrectly marked as
12590 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
12592 All package sub-objects are now fully resolved before they are
12593 returned from the external ACPI interfaces. This means that name
12594 strings are resolved to object handles, and constant operators
12595 (Zero, One, Ones, Revision) are resolved to Integers.
12597 Implemented immediate resolution of the AML Constant opcodes
12598 (Zero, One, Ones, Revision) to Integer objects upon detection
12599 within the AML stream. This has simplified and reduced the
12600 generated code size of the subsystem by eliminating about 10
12601 switch statements for these constants (which previously were
12602 contained in Reference objects.) The complicating issues are that
12603 the Zero opcode is used as a "placeholder" for unspecified
12604 optional target operands and stores to constants are defined to be
12607 Code and Data Size: Current core subsystem library sizes are shown
12608 below. These are the code and data sizes for the acpica.lib
12609 produced by the Microsoft Visual C++ 6.0 compiler, and these
12610 values do not include any ACPI driver or OSPM code. The debug
12611 version of the code includes the debug output trace mechanism and
12612 has a larger code and data size. Note that these values will vary
12613 depending on the efficiency of the compiler and the compiler
12614 options used during generation.
12617 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12618 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12620 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
12621 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
12627 Added preliminary support for obtaining _TRA data for PCI root
12628 bridges (Bjorn Helgaas).
12631 3) iASL Compiler Version X2046:
12633 Fixed a problem where the "_DDN" reserved name was defined to be a
12634 control method with one argument. There are no arguments, and
12635 _DDN does not have to be a control method.
12637 Fixed a problem with the Linux version of the compiler where the
12638 source lines printed with error messages were the wrong lines.
12639 This turned out to be the "LF versus CR/LF" difference between
12640 Windows and Unix. This appears to be the longstanding issue
12641 concerning listing output and error messages.
12643 Fixed a problem with the Linux version of compiler where opcode
12644 names within error messages were wrong. This was caused by a
12645 slight difference in the output of the Flex tool on Linux versus
12648 Fixed a problem with the Linux compiler where the hex output files
12649 contained some garbage data caused by an internal buffer overrun.
12652 ----------------------------------------
12653 17 May 2002. Summary of changes for this release.
12656 1) ACPI CA Core Subsystem Version 20020517:
12658 Implemented a workaround to an BIOS bug discovered on the HP
12659 OmniBook where the FADT revision number and the table size are
12660 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
12661 behavior is to fallback to using only the ACPI 1.0 fields of the
12662 FADT if the table is too small to be a ACPI 2.0 table as claimed
12663 by the revision number. Although this is a BIOS bug, this is a
12664 case where the workaround is simple enough and with no side
12665 effects, so it seemed prudent to add it. A warning message is
12668 Implemented minimum size checks for the fixed-length ACPI tables -
12669 - the FADT and FACS, as well as consistency checks between the
12670 revision number and the table size.
12672 Fixed a reported problem in the table override support where the
12673 new table pointer was incorrectly treated as a physical address
12674 instead of a logical address.
12676 Eliminated the use of the AE_AML_ERROR exception and replaced it
12677 with more descriptive codes.
12679 Fixed a problem where an exception would occur if an ASL Field was
12680 defined with no named Field Units underneath it (used by some
12683 Code and Data Size: Current core subsystem library sizes are shown
12684 below. These are the code and data sizes for the acpica.lib
12685 produced by the Microsoft Visual C++ 6.0 compiler, and these
12686 values do not include any ACPI driver or OSPM code. The debug
12687 version of the code includes the debug output trace mechanism and
12688 has a larger code and data size. Note that these values will vary
12689 depending on the efficiency of the compiler and the compiler
12690 options used during generation.
12693 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12694 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12696 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
12697 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
12703 Much work done on ACPI init (MADT and PCI IRQ routing support).
12704 (Paul D. and Dominik Brodowski)
12706 Fix PCI IRQ-related panic on boot (Sam Revitch)
12708 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
12710 Fix "MHz" typo (Dominik Brodowski)
12712 Fix RTC year 2000 issue (Dominik Brodowski)
12714 Preclude multiple button proc entries (Eric Brunet)
12716 Moved arch-specific code out of include/platform/aclinux.h
12718 3) iASL Compiler Version X2044:
12720 Implemented error checking for the string used in the EISAID macro
12721 (Usually used in the definition of the _HID object.) The code now
12722 strictly enforces the PnP format - exactly 7 characters, 3
12723 uppercase letters and 4 hex digits.
12725 If a raw string is used in the definition of the _HID object
12726 (instead of the EISAID macro), the string must contain all
12727 alphanumeric characters (e.g., "*PNP0011" is not allowed because
12730 Implemented checking for invalid use of ACPI reserved names for
12731 most of the name creation operators (Name, Device, Event, Mutex,
12732 OperationRegion, PowerResource, Processor, and ThermalZone.)
12733 Previously, this check was only performed for control methods.
12735 Implemented an additional check on the Name operator to emit an
12736 error if a reserved name that must be implemented in ASL as a
12737 control method is used. We know that a reserved name must be a
12738 method if it is defined with input arguments.
12740 The warning emitted when a namespace object reference is not found
12741 during the cross reference phase has been changed into an error.
12742 The "External" directive should be used for names defined in other
12746 4) Tools and Utilities
12748 The 16-bit tools (adump16 and aexec16) have been regenerated and
12751 Fixed a problem with the output of both acpidump and adump16 where
12752 the indentation of closing parentheses and brackets was not
12754 aligned properly with the parent block.
12757 ----------------------------------------
12758 03 May 2002. Summary of changes for this release.
12761 1) ACPI CA Core Subsystem Version 20020503:
12763 Added support a new OSL interface that allows the host operating
12765 system software to override the DSDT found in the firmware -
12766 AcpiOsTableOverride. With this interface, the OSL can examine the
12767 version of the firmware DSDT and replace it with a different one
12770 Added new external interfaces for accessing ACPI registers from
12771 device drivers and other system software - AcpiGetRegister and
12772 AcpiSetRegister. This was simply an externalization of the
12773 existing AcpiHwBitRegister interfaces.
12775 Fixed a regression introduced in the previous build where the
12776 ASL/AML CreateField operator always returned an error,
12777 "destination must be a NS Node".
12779 Extended the maximum time (before failure) to successfully enable
12780 ACPI mode to 3 seconds.
12782 Code and Data Size: Current core subsystem library sizes are shown
12783 below. These are the code and data sizes for the acpica.lib
12784 produced by the Microsoft Visual C++ 6.0 compiler, and these
12785 values do not include any ACPI driver or OSPM code. The debug
12786 version of the code includes the debug output trace mechanism and
12787 has a larger code and data size. Note that these values will vary
12788 depending on the efficiency of the compiler and the compiler
12789 options used during generation.
12792 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12793 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12795 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
12796 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
12801 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
12802 free. While 3 out of 4 of our in-house systems work fine, the last
12803 one still hangs when testing the LAPIC timer.
12805 Renamed many files in 2.5 kernel release to omit "acpi_" from the
12808 Added warning on boot for Presario 711FR.
12810 Sleep improvements (Pavel Machek)
12812 ACPI can now be built without CONFIG_PCI enabled.
12814 IA64: Fixed memory map functions (JI Lee)
12817 3) iASL Compiler Version X2043:
12819 Added support to allow the compiler to be integrated into the MS
12820 VC++ development environment for one-button compilation of single
12821 files or entire projects -- with error-to-source-line mapping.
12823 Implemented support for compile-time constant folding for the
12824 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
12825 specification. This allows the ASL writer to use expressions
12826 instead of Integer/Buffer/String constants in terms that must
12827 evaluate to constants at compile time and will also simplify the
12828 emitted AML in any such sub-expressions that can be folded
12829 (evaluated at compile-time.) This increases the size of the
12830 compiler significantly because a portion of the ACPI CA AML
12831 interpreter is included within the compiler in order to pre-
12832 evaluate constant expressions.
12835 Fixed a problem with the "Unicode" ASL macro that caused the
12836 compiler to fault. (This macro is used in conjunction with the
12837 _STR reserved name.)
12839 Implemented an AML opcode optimization to use the Zero, One, and
12840 Ones opcodes where possible to further reduce the size of integer
12841 constants and thus reduce the overall size of the generated AML
12844 Implemented error checking for new reserved terms for ACPI version
12847 Implemented the -qr option to display the current list of ACPI
12848 reserved names known to the compiler.
12850 Implemented the -qc option to display the current list of ASL
12851 operators that are allowed within constant expressions and can
12852 therefore be folded at compile time if the operands are constants.
12857 Updated the Programmer's Reference for new interfaces, data types,
12858 and memory allocation model options.
12860 Updated the iASL Compiler User Reference to apply new format and
12861 add information about new features and options.
12863 ----------------------------------------
12864 19 April 2002. Summary of changes for this release.
12866 1) ACPI CA Core Subsystem Version 20020419:
12868 The source code base for the Core Subsystem has been completely
12869 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
12870 versions. The Lint option files used are included in the
12871 /acpi/generate/lint directory.
12873 Implemented enhanced status/error checking across the entire
12874 Hardware manager subsystem. Any hardware errors (reported from
12875 the OSL) are now bubbled up and will abort a running control
12879 Fixed a problem where the per-ACPI-table integer width (32 or 64)
12880 was stored only with control method nodes, causing a fault when
12881 non-control method code was executed during table loading. The
12882 solution implemented uses a global variable to indicate table
12883 width across the entire ACPI subsystem. Therefore, ACPI CA does
12884 not support mixed integer widths across different ACPI tables
12887 Fixed a problem where NULL extended fields (X fields) in an ACPI
12888 2.0 ACPI FADT caused the table load to fail. Although the
12889 existing ACPI specification is a bit fuzzy on this topic, the new
12890 behavior is to fall back on a ACPI 1.0 field if the corresponding
12891 ACPI 2.0 X field is zero (even though the table revision indicates
12892 a full ACPI 2.0 table.) The ACPI specification will be updated to
12893 clarify this issue.
12895 Fixed a problem with the SystemMemory operation region handler
12896 where memory was always accessed byte-wise even if the AML-
12897 specified access width was larger than a byte. This caused
12898 problems on systems with memory-mapped I/O. Memory is now
12899 accessed with the width specified. On systems that do not support
12900 non-aligned transfers, a check is made to guarantee proper address
12901 alignment before proceeding in order to avoid an AML-caused
12902 alignment fault within the kernel.
12905 Fixed a problem with the ExtendedIrq resource where only one byte
12906 of the 4-byte Irq field was extracted.
12908 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
12909 function was out of date and required a rewrite.
12911 Code and Data Size: Current core subsystem library sizes are shown
12912 below. These are the code and data sizes for the acpica.lib
12913 produced by the Microsoft Visual C++ 6.0 compiler, and these
12914 values do not include any ACPI driver or OSPM code. The debug
12915 version of the code includes the debug output trace mechanism and
12916 has a larger code and data size. Note that these values will vary
12917 depending on the efficiency of the compiler and the compiler
12918 options used during generation.
12921 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
12922 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
12924 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
12925 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
12930 PCI IRQ routing fixes (Dominik Brodowski)
12933 3) iASL Compiler Version X2042:
12935 Implemented an additional compile-time error check for a field
12936 unit whose size + minimum access width would cause a run-time
12937 access beyond the end-of-region. Previously, only the field size
12938 itself was checked.
12940 The Core subsystem and iASL compiler now share a common parse
12941 object in preparation for compile-time evaluation of the type
12942 3/4/5 ASL operators.
12945 ----------------------------------------
12946 Summary of changes for this release: 03_29_02
12948 1) ACPI CA Core Subsystem Version 20020329:
12950 Implemented support for late evaluation of TermArg operands to
12951 Buffer and Package objects. This allows complex expressions to be
12952 used in the declarations of these object types.
12954 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
12955 1.0, if the field was larger than 32 bits, it was returned as a
12956 buffer - otherwise it was returned as an integer. In ACPI 2.0,
12957 the field is returned as a buffer only if the field is larger than
12958 64 bits. The TableRevision is now considered when making this
12959 conversion to avoid incompatibility with existing ASL code.
12961 Implemented logical addressing for AcpiOsGetRootPointer. This
12962 allows an RSDP with either a logical or physical address. With
12963 this support, the host OS can now override all ACPI tables with
12964 one logical RSDP. Includes implementation of "typed" pointer
12965 support to allow a common data type for both physical and logical
12966 pointers internally. This required a change to the
12967 AcpiOsGetRootPointer interface.
12969 Implemented the use of ACPI 2.0 Generic Address Structures for all
12970 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
12971 mapped I/O for these ACPI features.
12973 Initialization now ignores not only non-required tables (All
12974 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
12975 not validate the table headers of unrecognized tables.
12977 Fixed a problem where a notify handler could only be
12978 installed/removed on an object of type Device. All "notify"
12980 objects are now supported -- Devices, Processor, Power, and
12983 Removed most verbosity from the ACPI_DB_INFO debug level. Only
12984 critical information is returned when this debug level is enabled.
12986 Code and Data Size: Current core subsystem library sizes are shown
12987 below. These are the code and data sizes for the acpica.lib
12988 produced by the Microsoft Visual C++ 6.0 compiler, and these
12989 values do not include any ACPI driver or OSPM code. The debug
12990 version of the code includes the debug output trace mechanism and
12991 has a larger code and data size. Note that these values will vary
12992 depending on the efficiency of the compiler and the compiler
12993 options used during generation.
12996 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
12997 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
12999 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13000 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13005 The processor driver (acpi_processor.c) now fully supports ACPI
13006 2.0-based processor performance control (e.g. Intel(R)
13007 SpeedStep(TM) technology) Note that older laptops that only have
13008 the Intel "applet" interface are not supported through this. The
13009 'limit' and 'performance' interface (/proc) are fully functional.
13010 [Note that basic policy for controlling performance state
13011 transitions will be included in the next version of ospmd.] The
13012 idle handler was modified to more aggressively use C2, and PIIX4
13013 errata handling underwent a complete overhaul (big thanks to
13014 Dominik Brodowski).
13016 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13017 based devices in the ACPI namespace are now dynamically bound
13018 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13019 This allows, among other things, ACPI to resolve bus numbers for
13020 subordinate PCI bridges.
13022 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13023 entries defined underneath PCI bridges.
13025 Added IBM 600E to bad bios list due to invalid _ADR value for
13026 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13028 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13029 (acpi.c, mpparse.c) -- stay tuned.
13031 Added back visual differentiation between fixed-feature and
13032 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13033 button/power/PWRF) to simplify button identification.
13035 We no longer use -Wno-unused when compiling debug. Please ignore
13036 any "_THIS_MODULE defined but not used" messages.
13038 Can now shut down the system using "magic sysrq" key.
13041 3) iASL Compiler version 2041:
13043 Fixed a problem where conversion errors for hex/octal/decimal
13044 constants were not reported.
13046 Implemented a fix for the General Register template Address field.
13047 This field was 8 bits when it should be 64.
13049 Fixed a problem where errors/warnings were no longer being emitted
13050 within the listing output file.
13052 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13053 exactly 4 characters, alphanumeric only.
13058 ----------------------------------------
13059 Summary of changes for this release: 03_08_02
13062 1) ACPI CA Core Subsystem Version 20020308:
13064 Fixed a problem with AML Fields where the use of the "AccessAny"
13065 keyword could cause an interpreter error due to attempting to read
13066 or write beyond the end of the parent Operation Region.
13068 Fixed a problem in the SystemMemory Operation Region handler where
13069 an attempt was made to map memory beyond the end of the region.
13070 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13071 errors on some Linux systems.
13073 Fixed a problem where the interpreter/namespace "search to root"
13074 algorithm was not functioning for some object types. Relaxed the
13075 internal restriction on the search to allow upsearches for all
13076 external object types as well as most internal types.
13081 We now use safe_halt() macro versus individual calls to sti | hlt.
13083 Writing to the processor limit interface should now work. "echo 1"
13084 will increase the limit, 2 will decrease, and 0 will reset to the
13091 Fixed segfault on Linux version.
13094 ----------------------------------------
13095 Summary of changes for this release: 02_25_02
13097 1) ACPI CA Core Subsystem:
13100 Fixed a problem where the GPE bit masks were not initialized
13101 properly, causing erratic GPE behavior.
13103 Implemented limited support for multiple calling conventions. The
13104 code can be generated with either the VPL (variable parameter
13105 list, or "C") convention, or the FPL (fixed parameter list, or
13106 "Pascal") convention. The core subsystem is about 3.4% smaller
13107 when generated with FPL.
13112 Re-add some /proc/acpi/event functionality that was lost during
13115 Resolved issue with /proc events for fixed-feature buttons showing
13116 up as the system device.
13118 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13120 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13122 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13124 Fixed limit interface & usage to fix bugs with passive cooling
13127 Restructured PRT support.
13130 ----------------------------------------
13131 Summary of changes for this label: 02_14_02
13134 1) ACPI CA Core Subsystem:
13136 Implemented support in AcpiLoadTable to allow loading of FACS and
13139 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13140 been removed. All 64-bit platforms should be migrated to the ACPI
13141 2.0 tables. The actbl71.h header has been removed from the source
13144 All C macros defined within the subsystem have been prefixed with
13145 "ACPI_" to avoid collision with other system include files.
13147 Removed the return value for the two AcpiOsPrint interfaces, since
13148 it is never used and causes lint warnings for ignoring the return
13151 Added error checking to all internal mutex acquire and release
13152 calls. Although a failure from one of these interfaces is
13153 probably a fatal system error, these checks will cause the
13154 immediate abort of the currently executing method or interface.
13156 Fixed a problem where the AcpiSetCurrentResources interface could
13157 fault. This was a side effect of the deployment of the new memory
13160 Fixed a couple of problems with the Global Lock support introduced
13161 in the last major build. The "common" (1.0/2.0) internal FACS was
13162 being overwritten with the FACS signature and clobbering the
13163 Global Lock pointer. Also, the actual firmware FACS was being
13164 unmapped after construction of the "common" FACS, preventing
13165 access to the actual Global Lock field within it. The "common"
13166 internal FACS is no longer installed as an actual ACPI table; it
13167 is used simply as a global.
13169 Code and Data Size: Current core subsystem library sizes are shown
13170 below. These are the code and data sizes for the acpica.lib
13171 produced by the Microsoft Visual C++ 6.0 compiler, and these
13172 values do not include any ACPI driver or OSPM code. The debug
13173 version of the code includes the debug output trace mechanism and
13174 has a larger code and data size. Note that these values will vary
13175 depending on the efficiency of the compiler and the compiler
13176 options used during generation.
13178 Previous Release (02_07_01)
13179 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13180 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13182 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13183 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13188 Updated Linux-specific code for core macro and OSL interface
13189 changes described above.
13191 Improved /proc/acpi/event. It now can be opened only once and has
13192 proper poll functionality.
13194 Fixed and restructured power management (acpi_bus).
13196 Only create /proc "view by type" when devices of that class exist.
13198 Fixed "charging/discharging" bug (and others) in acpi_battery.
13200 Improved thermal zone code.
13203 3) ASL Compiler, version X2039:
13206 Implemented the new compiler restriction on ASL String hex/octal
13207 escapes to non-null, ASCII values. An error results if an invalid
13208 value is used. (This will require an ACPI 2.0 specification
13211 AML object labels that are output to the optional C and ASM source
13212 are now prefixed with both the ACPI table signature and table ID
13213 to help guarantee uniqueness within a large BIOS project.
13216 ----------------------------------------
13217 Summary of changes for this label: 02_01_02
13219 1) ACPI CA Core Subsystem:
13221 ACPI 2.0 support is complete in the entire Core Subsystem and the
13222 ASL compiler. All new ACPI 2.0 operators are implemented and all
13223 other changes for ACPI 2.0 support are complete. With
13224 simultaneous code and data optimizations throughout the subsystem,
13225 ACPI 2.0 support has been implemented with almost no additional
13226 cost in terms of code and data size.
13228 Implemented a new mechanism for allocation of return buffers. If
13229 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13230 be allocated on behalf of the caller. Consolidated all return
13231 buffer validation and allocation to a common procedure. Return
13232 buffers will be allocated via the primary OSL allocation interface
13233 since it appears that a separate pool is not needed by most users.
13234 If a separate pool is required for these buffers, the caller can
13235 still use the original mechanism and pre-allocate the buffer(s).
13237 Implemented support for string operands within the DerefOf
13240 Restructured the Hardware and Event managers to be table driven,
13241 simplifying the source code and reducing the amount of generated
13244 Split the common read/write low-level ACPI register bitfield
13245 procedure into a separate read and write, simplifying the code
13248 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13249 used only a handful of times and didn't have enough critical mass
13250 for a separate interface. Replaced with a common calloc procedure
13253 Fixed a reported problem with the GPE number mapping mechanism
13254 that allows GPE1 numbers to be non-contiguous with GPE0.
13255 Reorganized the GPE information and shrunk a large array that was
13256 originally large enough to hold info for all possible GPEs (256)
13257 to simply large enough to hold all GPEs up to the largest GPE
13258 number on the machine.
13260 Fixed a reported problem with resource structure alignment on 64-
13263 Changed the AcpiEnableEvent and AcpiDisableEvent external
13264 interfaces to not require any flags for the common case of
13265 enabling/disabling a GPE.
13267 Implemented support to allow a "Notify" on a Processor object.
13269 Most TBDs in comments within the source code have been resolved
13273 Fixed a problem in the interpreter where a standalone parent
13274 prefix (^) was not handled correctly in the interpreter and
13277 Removed obsolete and unnecessary GPE save/restore code.
13279 Implemented Field support in the ASL Load operator. This allows a
13280 table to be loaded from a named field, in addition to loading a
13281 table directly from an Operation Region.
13283 Implemented timeout and handle support in the external Global Lock
13286 Fixed a problem in the AcpiDump utility where pathnames were no
13287 longer being generated correctly during the dump of named objects.
13289 Modified the AML debugger to give a full display of if/while
13290 predicates instead of just one AML opcode at a time. (The
13291 predicate can have several nested ASL statements.) The old method
13292 was confusing during single stepping.
13294 Code and Data Size: Current core subsystem library sizes are shown
13295 below. These are the code and data sizes for the acpica.lib
13296 produced by the Microsoft Visual C++ 6.0 compiler, and these
13297 values do not include any ACPI driver or OSPM code. The debug
13298 version of the code includes the debug output trace mechanism and
13299 has a larger code and data size. Note that these values will vary
13300 depending on the efficiency of the compiler and the compiler
13301 options used during generation.
13303 Previous Release (12_18_01)
13304 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13305 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13307 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13308 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13312 Implemented fix for PIIX reverse throttling errata (Processor
13315 Added new Limit interface (Processor and Thermal drivers)
13317 New thermal policy (Thermal driver)
13319 Many updates to /proc
13321 Battery "low" event support (Battery driver)
13323 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13325 IA32 - IA64 initialization unification, no longer experimental
13327 Menuconfig options redesigned
13329 3) ASL Compiler, version X2037:
13331 Implemented several new output features to simplify integration of
13332 AML code into firmware: 1) Output the AML in C source code with
13333 labels for each named ASL object. The original ASL source code
13334 is interleaved as C comments. 2) Output the AML in ASM source code
13335 with labels and interleaved ASL source. 3) Output the AML in
13336 raw hex table form, in either C or ASM.
13338 Implemented support for optional string parameters to the
13339 LoadTable operator.
13341 Completed support for embedded escape sequences within string
13342 literals. The compiler now supports all single character escapes
13343 as well as the Octal and Hex escapes. Note: the insertion of a
13344 null byte into a string literal (via the hex/octal escape) causes
13345 the string to be immediately terminated. A warning is issued.
13347 Fixed a problem where incorrect AML was generated for the case
13348 where an ASL namepath consists of a single parent prefix (
13350 ) with no trailing name segments.
13352 The compiler has been successfully generated with a 64-bit C
13358 ----------------------------------------
13359 Summary of changes for this label: 12_18_01
13363 Enhanced blacklist with reason and severity fields. Any table's
13364 signature may now be used to identify a blacklisted system.
13366 Call _PIC control method to inform the firmware which interrupt
13367 model the OS is using. Turn on any disabled link devices.
13369 Cleaned up busmgr /proc error handling (Andreas Dilger)
13371 2) ACPI CA Core Subsystem:
13373 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13376 Completed implementation of the ACPI 2.0 "Continue",
13377 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13378 operators. All new ACPI 2.0 operators are now implemented in both
13379 the ASL compiler and the AML interpreter. The only remaining ACPI
13380 2.0 task is support for the String data type in the DerefOf
13381 operator. Fixed a problem with AcquireMutex where the status code
13382 was lost if the caller had to actually wait for the mutex.
13384 Increased the maximum ASL Field size from 64K bits to 4G bits.
13386 Completed implementation of the external Global Lock interfaces --
13387 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13388 Handler parameters were added.
13390 Completed another pass at removing warnings and issues when
13391 compiling with 64-bit compilers. The code now compiles cleanly
13392 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13393 add and subtract (diff) macros have changed considerably.
13396 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13397 64-bit platforms, 32-bits on all others. This type is used
13398 wherever memory allocation and/or the C sizeof() operator is used,
13399 and affects the OSL memory allocation interfaces AcpiOsAllocate
13400 and AcpiOsCallocate.
13402 Implemented sticky user breakpoints in the AML debugger.
13404 Code and Data Size: Current core subsystem library sizes are shown
13405 below. These are the code and data sizes for the acpica.lib
13406 produced by the Microsoft Visual C++ 6.0 compiler, and these
13407 values do not include any ACPI driver or OSPM code. The debug
13408 version of the code includes the debug output trace mechanism and
13409 has a larger code and data size. Note that these values will vary
13410 depending on the efficiency of the compiler and the compiler
13411 options used during generation.
13413 Previous Release (12_05_01)
13414 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13415 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13417 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13418 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13420 3) ASL Compiler, version X2034:
13422 Now checks for (and generates an error if detected) the use of a
13423 Break or Continue statement without an enclosing While statement.
13426 Successfully generated the compiler with the Intel 64-bit C
13429 ----------------------------------------
13430 Summary of changes for this label: 12_05_01
13432 1) ACPI CA Core Subsystem:
13434 The ACPI 2.0 CopyObject operator is fully implemented. This
13435 operator creates a new copy of an object (and is also used to
13436 bypass the "implicit conversion" mechanism of the Store operator.)
13438 The ACPI 2.0 semantics for the SizeOf operator are fully
13439 implemented. The change is that performing a SizeOf on a
13440 reference object causes an automatic dereference of the object to
13441 tha actual value before the size is evaluated. This behavior was
13442 undefined in ACPI 1.0.
13444 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13445 have been implemented. The interrupt polarity and mode are now
13448 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13449 appearing in Package objects were not properly converted to
13450 integers when the internal Package was converted to an external
13451 object (via the AcpiEvaluateObject interface.)
13453 Fixed a problem with the namespace object deletion mechanism for
13454 objects created by control methods. There were two parts to this
13455 problem: 1) Objects created during the initialization phase method
13456 parse were not being deleted, and 2) The object owner ID mechanism
13457 to track objects was broken.
13459 Fixed a problem where the use of the ASL Scope operator within a
13460 control method would result in an invalid opcode exception.
13462 Fixed a problem introduced in the previous label where the buffer
13463 length required for the _PRT structure was not being returned
13466 Code and Data Size: Current core subsystem library sizes are shown
13467 below. These are the code and data sizes for the acpica.lib
13468 produced by the Microsoft Visual C++ 6.0 compiler, and these
13469 values do not include any ACPI driver or OSPM code. The debug
13470 version of the code includes the debug output trace mechanism and
13471 has a larger code and data size. Note that these values will vary
13472 depending on the efficiency of the compiler and the compiler
13473 options used during generation.
13475 Previous Release (11_20_01)
13476 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13477 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13480 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13481 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13485 Updated all files to apply cleanly against 2.4.16.
13487 Added basic PCI Interrupt Routing Table (PRT) support for IA32
13488 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
13489 version supports both static and dyanmic PRT entries, but dynamic
13490 entries are treated as if they were static (not yet
13491 reconfigurable). Architecture- specific code to use this data is
13492 absent on IA32 but should be available shortly.
13494 Changed the initialization sequence to start the ACPI interpreter
13495 (acpi_init) prior to initialization of the PCI driver (pci_init)
13496 in init/main.c. This ordering is required to support PRT and
13497 facilitate other (future) enhancement. A side effect is that the
13498 ACPI bus driver and certain device drivers can no longer be loaded
13501 Modified the 'make menuconfig' options to allow PCI Interrupt
13502 Routing support to be included without the ACPI Bus and other
13505 3) ASL Compiler, version X2033:
13507 Fixed some issues with the use of the new CopyObject and
13508 DataTableRegion operators. Both are fully functional.
13510 ----------------------------------------
13511 Summary of changes for this label: 11_20_01
13513 20 November 2001. Summary of changes for this release.
13515 1) ACPI CA Core Subsystem:
13517 Updated Index support to match ACPI 2.0 semantics. Storing a
13518 Integer, String, or Buffer to an Index of a Buffer will store only
13519 the least-significant byte of the source to the Indexed buffer
13520 byte. Multiple writes are not performed.
13522 Fixed a problem where the access type used in an AccessAs ASL
13523 operator was not recorded correctly into the field object.
13525 Fixed a problem where ASL Event objects were created in a
13526 signalled state. Events are now created in an unsignalled state.
13528 The internal object cache is now purged after table loading and
13529 initialization to reduce the use of dynamic kernel memory -- on
13530 the assumption that object use is greatest during the parse phase
13531 of the entire table (versus the run-time use of individual control
13534 ACPI 2.0 variable-length packages are now fully operational.
13536 Code and Data Size: Code and Data optimizations have permitted new
13537 feature development with an actual reduction in the library size.
13538 Current core subsystem library sizes are shown below. These are
13539 the code and data sizes for the acpica.lib produced by the
13540 Microsoft Visual C++ 6.0 compiler, and these values do not include
13541 any ACPI driver or OSPM code. The debug version of the code
13542 includes the debug output trace mechanism and has a larger code
13543 and data size. Note that these values will vary depending on the
13544 efficiency of the compiler and the compiler options used during
13547 Previous Release (11_09_01):
13548 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13549 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13552 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
13553 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
13557 Enhanced the ACPI boot-time initialization code to allow the use
13558 of Local APIC tables for processor enumeration on IA-32, and to
13559 pave the way for a fully MPS-free boot (on SMP systems) in the
13560 near future. This functionality replaces
13561 arch/i386/kernel/acpitables.c, which was introduced in an earlier
13562 2.4.15-preX release. To enable this feature you must add
13563 "acpi_boot=on" to the kernel command line -- see the help entry
13564 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
13567 Restructured the configuration options to allow boot-time table
13568 parsing support without inclusion of the ACPI Interpreter (and
13571 NOTE: This release does not include fixes for the reported events,
13572 power-down, and thermal passive cooling issues (coming soon).
13576 Added additional typechecking for Fields within restricted access
13577 Operation Regions. All fields within EC and CMOS regions must be
13578 declared with ByteAcc. All fields withing SMBus regions must be
13579 declared with the BufferAcc access type.
13581 Fixed a problem where the listing file output of control methods
13582 no longer interleaved the actual AML code with the ASL source
13588 ----------------------------------------
13589 Summary of changes for this label: 11_09_01
13591 1) ACPI CA Core Subsystem:
13593 Implemented ACPI 2.0-defined support for writes to fields with a
13594 Buffer, String, or Integer source operand that is smaller than the
13595 target field. In these cases, the source operand is zero-extended
13596 to fill the target field.
13598 Fixed a problem where a Field starting bit offset (within the
13599 parent operation region) was calculated incorrectly if the
13601 alignment of the field differed from the access width. This
13602 affected CreateWordField, CreateDwordField, CreateQwordField, and
13603 possibly other fields that use the "AccessAny" keyword.
13605 Fixed a problem introduced in the 11_02_01 release where indirect
13606 stores through method arguments did not operate correctly.
13610 Implemented boot-time ACPI table parsing support
13611 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
13612 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
13613 legacy BIOS interfaces (e.g. MPS) for the configuration of system
13614 processors, memory, and interrupts during setup_arch(). Note that
13615 this patch does not include the required architecture-specific
13616 changes required to apply this information -- subsequent patches
13617 will be posted for both IA32 and IA64 to achieve this.
13619 Added low-level sleep support for IA32 platforms, courtesy of Pat
13620 Mochel. This allows IA32 systems to transition to/from various
13621 sleeping states (e.g. S1, S3), although the lack of a centralized
13622 driver model and power-manageable drivers will prevent its
13623 (successful) use on most systems.
13625 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
13626 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
13627 tables" option, etc.
13629 Increased the default timeout for the EC driver from 1ms to 10ms
13630 (1000 cycles of 10us) to try to address AE_TIME errors during EC
13633 ----------------------------------------
13634 Summary of changes for this label: 11_02_01
13636 1) ACPI CA Core Subsystem:
13638 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
13639 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
13642 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
13643 changes to support ACPI 2.0 Qword field access. Read/Write
13644 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
13645 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
13646 the value parameter for the address space handler interface is now
13647 an ACPI_INTEGER. OSL implementations of these interfaces must now
13648 handle the case where the Width parameter is 64.
13650 Index Fields: Fixed a problem where unaligned bit assembly and
13651 disassembly for IndexFields was not supported correctly.
13653 Index and Bank Fields: Nested Index and Bank Fields are now
13654 supported. During field access, a check is performed to ensure
13655 that the value written to an Index or Bank register is not out of
13656 the range of the register. The Index (or Bank) register is
13657 written before each access to the field data. Future support will
13658 include allowing individual IndexFields to be wider than the
13659 DataRegister width.
13661 Fields: Fixed a problem where the AML interpreter was incorrectly
13662 attempting to write beyond the end of a Field/OpRegion. This was
13663 a boundary case that occurred when a DWORD field was written to a
13664 BYTE access OpRegion, forcing multiple writes and causing the
13665 interpreter to write one datum too many.
13667 Fields: Fixed a problem with Field/OpRegion access where the
13668 starting bit address of a field was incorrectly calculated if the
13669 current access type was wider than a byte (WordAcc, DwordAcc, or
13672 Fields: Fixed a problem where forward references to individual
13673 FieldUnits (individual Field names within a Field definition) were
13674 not resolved during the AML table load.
13676 Fields: Fixed a problem where forward references from a Field
13677 definition to the parent Operation Region definition were not
13678 resolved during the AML table load.
13680 Fields: Duplicate FieldUnit names within a scope are now detected
13681 during AML table load.
13683 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
13684 returned an incorrect name for the root node.
13686 Code and Data Size: Code and Data optimizations have permitted new
13687 feature development with an actual reduction in the library size.
13688 Current core subsystem library sizes are shown below. These are
13689 the code and data sizes for the acpica.lib produced by the
13690 Microsoft Visual C++ 6.0 compiler, and these values do not include
13691 any ACPI driver or OSPM code. The debug version of the code
13692 includes the debug output trace mechanism and has a larger code
13693 and data size. Note that these values will vary depending on the
13694 efficiency of the compiler and the compiler options used during
13697 Previous Release (10_18_01):
13698 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13699 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13702 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
13703 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
13707 Improved /proc processor output (Pavel Machek) Re-added
13708 MODULE_LICENSE("GPL") to all modules.
13710 3) ASL Compiler version X2030:
13712 Duplicate FieldUnit names within a scope are now detected and
13717 Programmer Reference updated to reflect OSL and address space
13718 handler interface changes described above.
13720 ----------------------------------------
13721 Summary of changes for this label: 10_18_01
13723 ACPI CA Core Subsystem:
13725 Fixed a problem with the internal object reference count mechanism
13726 that occasionally caused premature object deletion. This resolves
13727 all of the outstanding problem reports where an object is deleted
13728 in the middle of an interpreter evaluation. Although this problem
13729 only showed up in rather obscure cases, the solution to the
13730 problem involved an adjustment of all reference counts involving
13731 objects attached to namespace nodes.
13733 Fixed a problem with Field support in the interpreter where
13734 writing to an aligned field whose length is an exact multiple (2
13735 or greater) of the field access granularity would cause an attempt
13736 to write beyond the end of the field.
13738 The top level AML opcode execution functions within the
13739 interpreter have been renamed with a more meaningful and
13740 consistent naming convention. The modules exmonad.c and
13741 exdyadic.c were eliminated. New modules are exoparg1.c,
13742 exoparg2.c, exoparg3.c, and exoparg6.c.
13744 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
13746 Fixed a problem where the AML debugger was causing some internal
13747 objects to not be deleted during subsystem termination.
13749 Fixed a problem with the external AcpiEvaluateObject interface
13750 where the subsystem would fault if the named object to be
13751 evaluated refered to a constant such as Zero, Ones, etc.
13753 Fixed a problem with IndexFields and BankFields where the
13754 subsystem would fault if the index, data, or bank registers were
13755 not defined in the same scope as the field itself.
13757 Added printf format string checking for compilers that support
13758 this feature. Corrected more than 50 instances of issues with
13759 format specifiers within invocations of ACPI_DEBUG_PRINT
13760 throughout the core subsystem code.
13762 The ASL "Revision" operator now returns the ACPI support level
13763 implemented in the core - the value "2" since the ACPI 2.0 support
13764 is more than 50% implemented.
13766 Enhanced the output of the AML debugger "dump namespace" command
13767 to output in a more human-readable form.
13769 Current core subsystem library code sizes are shown below. These
13771 are the code and data sizes for the acpica.lib produced by the
13772 Microsoft Visual C++ 6.0 compiler, and these values do not include
13773 any ACPI driver or OSPM code. The debug version of the code
13774 includes the full debug trace mechanism -- leading to a much
13776 larger code and data size. Note that these values will vary
13777 depending on the efficiency of the compiler and the compiler
13778 options used during generation.
13780 Previous Label (09_20_01):
13781 Non-Debug Version: 65K Code, 5K Data, 70K Total
13782 Debug Version: 138K Code, 58K Data, 196K Total
13786 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
13787 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
13791 Implemented a "Bad BIOS Blacklist" to track machines that have
13792 known ASL/AML problems.
13794 Enhanced the /proc interface for the thermal zone driver and added
13795 support for _HOT (the critical suspend trip point). The 'info'
13796 file now includes threshold/policy information, and allows setting
13797 of _SCP (cooling preference) and _TZP (polling frequency) values
13798 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
13799 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
13800 preference to the passive/quiet mode (if supported by the ASL).
13802 Implemented a workaround for a gcc bug that resuted in an OOPs
13803 when loading the control method battery driver.
13805 ----------------------------------------
13806 Summary of changes for this label: 09_20_01
13808 ACPI CA Core Subsystem:
13810 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
13811 modified to allow individual GPE levels to be flagged as wake-
13812 enabled (i.e., these GPEs are to remain enabled when the platform
13815 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
13816 support wake-enabled GPEs. This means that upon entering the
13817 sleep state, all GPEs that are not wake-enabled are disabled.
13818 When leaving the sleep state, these GPEs are reenabled.
13820 A local double-precision divide/modulo module has been added to
13821 enhance portability to OS kernels where a 64-bit math library is
13822 not available. The new module is "utmath.c".
13824 Several optimizations have been made to reduce the use of CPU
13825 stack. Originally over 2K, the maximum stack usage is now below
13826 2K at 1860 bytes (1.82k)
13828 Fixed a problem with the AcpiGetFirmwareTable interface where the
13829 root table pointer was not mapped into a logical address properly.
13831 Fixed a problem where a NULL pointer was being dereferenced in the
13832 interpreter code for the ASL Notify operator.
13834 Fixed a problem where the use of the ASL Revision operator
13835 returned an error. This operator now returns the current version
13836 of the ACPI CA core subsystem.
13838 Fixed a problem where objects passed as control method parameters
13839 to AcpiEvaluateObject were always deleted at method termination.
13840 However, these objects may end up being stored into the namespace
13841 by the called method. The object reference count mechanism was
13842 applied to these objects instead of a force delete.
13844 Fixed a problem where static strings or buffers (contained in the
13845 AML code) that are declared as package elements within the ASL
13846 code could cause a fault because the interpreter would attempt to
13847 delete them. These objects are now marked with the "static
13848 object" flag to prevent any attempt to delete them.
13850 Implemented an interpreter optimization to use operands directly
13851 from the state object instead of extracting the operands to local
13852 variables. This reduces stack use and code size, and improves
13855 The module exxface.c was eliminated as it was an unnecessary extra
13858 Current core subsystem library code sizes are shown below. These
13859 are the code and data sizes for the acpica.lib produced by the
13860 Microsoft Visual C++ 6.0 compiler, and these values do not include
13861 any ACPI driver or OSPM code. The debug version of the code
13862 includes the full debug trace mechanism -- leading to a much
13863 larger code and data size. Note that these values will vary
13864 depending on the efficiency of the compiler and the compiler
13865 options used during generation.
13867 Non-Debug Version: 65K Code, 5K Data, 70K Total
13868 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
13869 Total (Previously 195K)
13873 Support for ACPI 2.0 64-bit integers has been added. All ACPI
13874 Integer objects are now 64 bits wide
13876 All Acpi data types and structures are now in lower case. Only
13877 Acpi macros are upper case for differentiation.
13881 Changes to the external interfaces as described above.
13883 ----------------------------------------
13884 Summary of changes for this label: 08_31_01
13886 ACPI CA Core Subsystem:
13888 A bug with interpreter implementation of the ASL Divide operator
13889 was found and fixed. The implicit function return value (not the
13890 explicit store operands) was returning the remainder instead of
13891 the quotient. This was a longstanding bug and it fixes several
13892 known outstanding issues on various platforms.
13894 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
13895 been further optimized for size. There are 700 invocations of the
13896 DEBUG_PRINT macro alone, so each optimization reduces the size of
13897 the debug version of the subsystem significantly.
13899 A stack trace mechanism has been implemented. The maximum stack
13900 usage is about 2K on 32-bit platforms. The debugger command "stat
13901 stack" will display the current maximum stack usage.
13903 All public symbols and global variables within the subsystem are
13904 now prefixed with the string "Acpi". This keeps all of the
13905 symbols grouped together in a kernel map, and avoids conflicts
13906 with other kernel subsystems.
13908 Most of the internal fixed lookup tables have been moved into the
13909 code segment via the const operator.
13911 Several enhancements have been made to the interpreter to both
13912 reduce the code size and improve performance.
13914 Current core subsystem library code sizes are shown below. These
13915 are the code and data sizes for the acpica.lib produced by the
13916 Microsoft Visual C++ 6.0 compiler, and these values do not include
13917 any ACPI driver or OSPM code. The debug version of the code
13918 includes the full debug trace mechanism which contains over 700
13919 invocations of the DEBUG_PRINT macro, 500 function entry macro
13920 invocations, and over 900 function exit macro invocations --
13921 leading to a much larger code and data size. Note that these
13922 values will vary depending on the efficiency of the compiler and
13923 the compiler options used during generation.
13925 Non-Debug Version: 64K Code, 5K Data, 69K Total
13926 Debug Version: 137K Code, 58K Data, 195K Total
13930 Implemented wbinvd() macro, pending a kernel-wide definition.
13932 Fixed /proc/acpi/event to handle poll() and short reads.
13934 ASL Compiler, version X2026:
13936 Fixed a problem introduced in the previous label where the AML
13938 code emitted for package objects produced packages with zero
13941 ----------------------------------------
13942 Summary of changes for this label: 08_16_01
13944 ACPI CA Core Subsystem:
13946 The following ACPI 2.0 ASL operators have been implemented in the
13947 AML interpreter (These are already supported by the Intel ASL
13948 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
13949 ToBuffer. Support for 64-bit AML constants is implemented in the
13950 AML parser, debugger, and disassembler.
13952 The internal memory tracking mechanism (leak detection code) has
13953 been upgraded to reduce the memory overhead (a separate tracking
13954 block is no longer allocated for each memory allocation), and now
13955 supports all of the internal object caches.
13957 The data structures and code for the internal object caches have
13958 been coelesced and optimized so that there is a single cache and
13959 memory list data structure and a single group of functions that
13960 implement generic cache management. This has reduced the code
13961 size in both the debug and release versions of the subsystem.
13963 The DEBUG_PRINT macro(s) have been optimized for size and replaced
13964 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
13965 different, because it generates a single call to an internal
13966 function. This results in a savings of about 90 bytes per
13967 invocation, resulting in an overall code and data savings of about
13968 16% in the debug version of the subsystem.
13972 Fixed C3 disk corruption problems and re-enabled C3 on supporting
13975 Integrated low-level sleep code by Patrick Mochel.
13977 Further tweaked source code Linuxization.
13983 Support for ACPI 2.0 variable length packages is fixed/completed.
13985 Fixed a problem where the optional length parameter for the ACPI
13986 2.0 ToString operator.
13988 Fixed multiple extraneous error messages when a syntax error is
13989 detected within the declaration line of a control method.
13991 ----------------------------------------
13992 Summary of changes for this label: 07_17_01
13994 ACPI CA Core Subsystem:
13996 Added a new interface named AcpiGetFirmwareTable to obtain any
13997 ACPI table via the ACPI signature. The interface can be called at
13998 any time during kernel initialization, even before the kernel
13999 virtual memory manager is initialized and paging is enabled. This
14000 allows kernel subsystems to obtain ACPI tables very early, even
14001 before the ACPI CA subsystem is initialized.
14003 Fixed a problem where Fields defined with the AnyAcc attribute
14004 could be resolved to the incorrect address under the following
14005 conditions: 1) the field width is larger than 8 bits and 2) the
14006 parent operation region is not defined on a DWORD boundary.
14008 Fixed a problem where the interpreter is not being locked during
14009 namespace initialization (during execution of the _INI control
14010 methods), causing an error when an attempt is made to release it
14013 ACPI 2.0 support in the AML Interpreter has begun and will be
14014 ongoing throughout the rest of this year. In this label, The Mod
14015 operator is implemented.
14017 Added a new data type to contain full PCI addresses named
14018 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14019 and Function values.
14023 Enhanced the Linux version of the source code to change most
14024 capitalized ACPI type names to lowercase. For example, all
14025 instances of ACPI_STATUS are changed to acpi_status. This will
14026 result in a large diff, but the change is strictly cosmetic and
14027 aligns the CA code closer to the Linux coding standard.
14031 The interfaces to the PCI configuration space have been changed to
14032 add the PCI Segment number and to split the single 32-bit combined
14033 DeviceFunction field into two 16-bit fields. This was
14034 accomplished by moving the four values that define an address in
14035 PCI configuration space (segment, bus, device, and function) to
14036 the new ACPI_PCI_ID structure.
14038 The changes to the PCI configuration space interfaces led to a
14039 reexamination of the complete set of address space access
14040 interfaces for PCI, I/O, and Memory. The previously existing 18
14041 interfaces have proven difficult to maintain (any small change
14042 must be propagated across at least 6 interfaces) and do not easily
14043 allow for future expansion to 64 bits if necessary. Also, on some
14044 systems, it would not be appropriate to demultiplex the access
14045 width (8, 16, 32,or 64) before calling the OSL if the
14046 corresponding native OS interfaces contain a similar access width
14047 parameter. For these reasons, the 18 address space interfaces
14048 have been replaced by these 6 new ones:
14050 AcpiOsReadPciConfiguration
14051 AcpiOsWritePciConfiguration
14057 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14058 to perform the platform and/or OS-specific actions necessary to
14059 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14060 interface will simply call down to the CA core to perform the low-
14061 memory search for the table. On IA-64, the RSDP is obtained from
14062 EFI. Migrating this interface to the OSL allows the CA core to
14064 remain OS and platform independent.
14066 Added a new interface named AcpiOsSignal to provide a generic
14067 "function code and pointer" interface for various miscellaneous
14068 signals and notifications that must be made to the host OS. The
14069 first such signals are intended to support the ASL Fatal and
14070 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14071 interface has been obsoleted.
14073 The definition of the AcpiFormatException interface has been
14074 changed to simplify its use. The caller no longer must supply a
14075 buffer to the call; A pointer to a const string is now returned
14076 directly. This allows the call to be easily used in printf
14077 statements, etc. since the caller does not have to manage a local
14081 ASL Compiler, Version X2025:
14083 The ACPI 2.0 Switch/Case/Default operators have been implemented
14084 and are fully functional. They will work with all ACPI 1.0
14085 interpreters, since the operators are simply translated to If/Else
14088 The ACPI 2.0 ElseIf operator is implemented and will also work
14089 with 1.0 interpreters, for the same reason.
14091 Implemented support for ACPI 2.0 variable-length packages. These
14092 packages have a separate opcode, and their size is determined by
14093 the interpreter at run-time.
14095 Documentation The ACPI CA Programmer Reference has been updated to
14096 reflect the new interfaces and changes to existing interfaces.
14098 ------------------------------------------
14099 Summary of changes for this label: 06_15_01
14101 ACPI CA Core Subsystem:
14103 Fixed a problem where a DWORD-accessed field within a Buffer
14104 object would get its byte address inadvertently rounded down to
14105 the nearest DWORD. Buffers are always Byte-accessible.
14107 ASL Compiler, version X2024:
14109 Fixed a problem where the Switch() operator would either fault or
14110 hang the compiler. Note however, that the AML code for this ACPI
14111 2.0 operator is not yet implemented.
14113 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14116 Implementation of the CreateField operator automatically converts
14117 a reference to a named field within a resource descriptor from a
14118 byte offset to a bit offset if required.
14120 Added some missing named fields from the resource descriptor
14121 support. These are the names that are automatically created by the
14122 compiler to reference fields within a descriptor. They are only
14123 valid at compile time and are not passed through to the AML
14126 Resource descriptor named fields are now typed as Integers and
14127 subject to compile-time typechecking when used in expressions.
14129 ------------------------------------------
14130 Summary of changes for this label: 05_18_01
14132 ACPI CA Core Subsystem:
14134 Fixed a couple of problems in the Field support code where bits
14135 from adjacent fields could be returned along with the proper field
14136 bits. Restructured the field support code to improve performance,
14137 readability and maintainability.
14139 New DEBUG_PRINTP macro automatically inserts the procedure name
14140 into the output, saving hundreds of copies of procedure name
14141 strings within the source, shrinking the memory footprint of the
14142 debug version of the core subsystem.
14144 Source Code Structure:
14146 The source code directory tree was restructured to reflect the
14147 current organization of the component architecture. Some files
14148 and directories have been moved and/or renamed.
14152 Fixed leaking kacpidpc processes.
14154 Fixed queueing event data even when /proc/acpi/event is not
14157 ASL Compiler, version X2020:
14159 Memory allocation performance enhancement - over 24X compile time
14160 improvement on large ASL files. Parse nodes and namestring
14161 buffers are now allocated from a large internal compiler buffer.
14163 The temporary .SRC file is deleted unless the "-s" option is
14166 The "-d" debug output option now sends all output to the .DBG file
14167 instead of the console.
14169 "External" second parameter is now optional
14171 "ElseIf" syntax now properly allows the predicate
14173 Last operand to "Load" now recognized as a Target operand
14175 Debug object can now be used anywhere as a normal object.
14177 ResourceTemplate now returns an object of type BUFFER
14179 EISAID now returns an object of type INTEGER
14181 "Index" now works with a STRING operand
14183 "LoadTable" now accepts optional parameters
14185 "ToString" length parameter is now optional
14187 "Interrupt (ResourceType," parse error fixed.
14189 "Register" with a user-defined region space parse error fixed
14191 Escaped backslash at the end of a string ("\\") scan/parse error
14194 "Revision" is now an object of type INTEGER.
14198 ------------------------------------------
14199 Summary of changes for this label: 05_02_01
14203 /proc/acpi/event now blocks properly.
14205 Removed /proc/sys/acpi. You can still dump your DSDT from
14208 ACPI CA Core Subsystem:
14210 Fixed a problem introduced in the previous label where some of the
14211 "small" resource descriptor types were not recognized.
14213 Improved error messages for the case where an ASL Field is outside
14214 the range of the parent operation region.
14216 ASL Compiler, version X2018:
14219 Added error detection for ASL Fields that extend beyond the length
14220 of the parent operation region (only if the length of the region
14221 is known at compile time.) This includes fields that have a
14222 minimum access width that is smaller than the parent region, and
14223 individual field units that are partially or entirely beyond the
14224 extent of the parent.
14228 ------------------------------------------
14229 Summary of changes for this label: 04_27_01
14231 ACPI CA Core Subsystem:
14233 Fixed a problem where the namespace mutex could be released at the
14234 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14236 Added optional thread ID output for debug traces, to simplify
14237 debugging of multiple threads. Added context switch notification
14238 when the debug code realizes that a different thread is now
14239 executing ACPI code.
14241 Some additional external data types have been prefixed with the
14242 string "ACPI_" for consistency. This may effect existing code.
14243 The data types affected are the external callback typedefs - e.g.,
14245 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14249 Fixed an issue with the OSL semaphore implementation where a
14250 thread was waking up with an error from receiving a SIGCHLD
14253 Linux version of ACPI CA now uses the system C library for string
14254 manipulation routines instead of a local implementation.
14256 Cleaned up comments and removed TBDs.
14258 ASL Compiler, version X2017:
14260 Enhanced error detection and reporting for all file I/O
14265 Programmer Reference updated to version 1.06.
14269 ------------------------------------------
14270 Summary of changes for this label: 04_13_01
14272 ACPI CA Core Subsystem:
14274 Restructured support for BufferFields and RegionFields.
14275 BankFields support is now fully operational. All known 32-bit
14276 limitations on field sizes have been removed. Both BufferFields
14277 and (Operation) RegionFields are now supported by the same field
14280 Resource support now supports QWORD address and IO resources. The
14281 16/32/64 bit address structures and the Extended IRQ structure
14282 have been changed to properly handle Source Resource strings.
14284 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14285 condition internally and must never be returned by AcpiOsThreadId.
14286 This reserved value was changed from 0 since Unix systems allow a
14291 Driver code reorganized to enhance portability
14293 Added a kernel configuration option to control ACPI_DEBUG
14295 Fixed the EC driver to honor _GLK.
14297 ASL Compiler, version X2016:
14299 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14300 address space was set to 0, not 0x7f as it should be.
14302 ------------------------------------------
14303 Summary of changes for this label: 03_13_01
14305 ACPI CA Core Subsystem:
14307 During ACPI initialization, the _SB_._INI method is now run if
14310 Notify handler fix - notifies are deferred until the parent method
14311 completes execution. This fixes the "mutex already acquired"
14312 issue seen occasionally.
14314 Part of the "implicit conversion" rules in ACPI 2.0 have been
14315 found to cause compatibility problems with existing ASL/AML. The
14316 convert "result-to-target-type" implementation has been removed
14317 for stores to method Args and Locals. Source operand conversion
14318 is still fully implemented. Possible changes to ACPI 2.0
14319 specification pending.
14321 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14324 Fix for compiler warnings for 64-bit compiles.
14328 /proc output aligned for easier parsing.
14330 Release-version compile problem fixed.
14332 New kernel configuration options documented in Configure.help.
14334 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14339 Power resource driver integrated with bus manager.
14341 Fixed kernel fault during active cooling for thermal zones.
14345 The source code tree has been restructured.
14349 ------------------------------------------
14350 Summary of changes for this label: 03_02_01
14352 Linux OS Services Layer (OSL):
14354 Major revision of all Linux-specific code.
14356 Modularized all ACPI-specific drivers.
14358 Added new thermal zone and power resource drivers.
14360 Revamped /proc interface (new functionality is under /proc/acpi).
14362 New kernel configuration options.
14364 Linux known issues:
14366 New kernel configuration options not documented in Configure.help
14370 Module dependencies not currently implemented. If used, they
14371 should be loaded in this order: busmgr, power, ec, system,
14372 processor, battery, ac_adapter, button, thermal.
14374 Modules will not load if CONFIG_MODVERSION is set.
14376 IBM 600E - entering S5 may reboot instead of shutting down.
14378 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14381 Some systems may fail with "execution mutex already acquired"
14384 ACPI CA Core Subsystem:
14386 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14387 for the deadlock detection code. Defined to return a non-zero, 32-
14388 bit thread ID for the currently executing thread. May be a non-
14389 zero constant integer on single-thread systems.
14391 Implemented deadlock detection for internal subsystem mutexes. We
14392 may add conditional compilation for this code (debug only) later.
14394 ASL/AML Mutex object semantics are now fully supported. This
14395 includes multiple acquires/releases by owner and support for the
14397 Mutex SyncLevel parameter.
14399 A new "Force Release" mechanism automatically frees all ASL
14400 Mutexes that have been acquired but not released when a thread
14401 exits the interpreter. This forces conformance to the ACPI spec
14402 ("All mutexes must be released when an invocation exits") and
14403 prevents deadlocked ASL threads. This mechanism can be expanded
14404 (later) to monitor other resource acquisitions if OEM ASL code
14405 continues to misbehave (which it will).
14407 Several new ACPI exception codes have been added for the Mutex
14410 Recursive method calls are now allowed and supported (the ACPI
14411 spec does in fact allow recursive method calls.) The number of
14412 recursive calls is subject to the restrictions imposed by the
14413 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14416 Implemented support for the SyncLevel parameter for control
14417 methods (ACPI 2.0 feature)
14419 Fixed a deadlock problem when multiple threads attempted to use
14422 Fixed a problem where the string length of a String package
14423 element was not always set in a package returned from
14424 AcpiEvaluateObject.
14426 Fixed a problem where the length of a String package element was
14427 not always included in the length of the overall package returned
14428 from AcpiEvaluateObject.
14430 Added external interfaces (Acpi*) to the ACPI debug memory
14431 manager. This manager keeps a list of all outstanding
14432 allocations, and can therefore detect memory leaks and attempts to
14433 free memory blocks more than once. Useful for code such as the
14434 power manager, etc. May not be appropriate for device drivers.
14435 Performance with the debug code enabled is slow.
14437 The ACPI Global Lock is now an optional hardware element.
14439 ASL Compiler Version X2015:
14441 Integrated changes to allow the compiler to be generated on
14442 multiple platforms.
14444 Linux makefile added to generate the compiler on Linux
14448 All platform-specific headers have been moved to their own
14449 subdirectory, Include/Platform.
14451 New source file added, Interpreter/ammutex.c
14453 New header file, Include/acstruct.h
14457 The programmer reference has been updated for the following new
14458 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
14460 ------------------------------------------
14461 Summary of changes for this label: 02_08_01
14463 Core ACPI CA Subsystem: Fixed a problem where an error was
14464 incorrectly returned if the return resource buffer was larger than
14465 the actual data (in the resource interfaces).
14467 References to named objects within packages are resolved to the
14469 full pathname string before packages are returned directly (via
14470 the AcpiEvaluateObject interface) or indirectly via the resource
14473 Linux OS Services Layer (OSL):
14475 Improved /proc battery interface.
14478 Added C-state debugging output and other miscellaneous fixes.
14480 ASL Compiler Version X2014:
14482 All defined method arguments can now be used as local variables,
14483 including the ones that are not actually passed in as parameters.
14484 The compiler tracks initialization of the arguments and issues an
14485 exception if they are used without prior assignment (just like
14488 The -o option now specifies a filename prefix that is used for all
14489 output files, including the AML output file. Otherwise, the
14490 default behavior is as follows: 1) the AML goes to the file
14491 specified in the DSDT. 2) all other output files use the input
14492 source filename as the base.
14494 ------------------------------------------
14495 Summary of changes for this label: 01_25_01
14497 Core ACPI CA Subsystem: Restructured the implementation of object
14498 store support within the interpreter. This includes support for
14499 the Store operator as well as any ASL operators that include a
14502 Partially implemented support for Implicit Result-to-Target
14503 conversion. This is when a result object is converted on the fly
14504 to the type of an existing target object. Completion of this
14505 support is pending further analysis of the ACPI specification
14506 concerning this matter.
14508 CPU-specific code has been removed from the subsystem (hardware
14511 New Power Management Timer functions added
14513 Linux OS Services Layer (OSL): Moved system state transition code
14514 to the core, fixed it, and modified Linux OSL accordingly.
14516 Fixed C2 and C3 latency calculations.
14519 We no longer use the compilation date for the version message on
14520 initialization, but retrieve the version from AcpiGetSystemInfo().
14522 Incorporated for fix Sony VAIO machines.
14524 Documentation: The Programmer Reference has been updated and
14528 ASL Compiler: Version X2013: Fixed a problem where the line
14529 numbering and error reporting could get out of sync in the
14530 presence of multiple include files.
14532 ------------------------------------------
14533 Summary of changes for this label: 01_15_01
14535 Core ACPI CA Subsystem:
14537 Implemented support for type conversions in the execution of the
14538 ASL Concatenate operator (The second operand is converted to
14539 match the type of the first operand before concatenation.)
14541 Support for implicit source operand conversion is partially
14542 implemented. The ASL source operand types Integer, Buffer, and
14543 String are freely interchangeable for most ASL operators and are
14544 converted by the interpreter on the fly as required. Implicit
14545 Target operand conversion (where the result is converted to the
14546 target type before storing) is not yet implemented.
14548 Support for 32-bit and 64-bit BCD integers is implemented.
14550 Problem fixed where a field read on an aligned field could cause a
14551 read past the end of the field.
14553 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
14554 does not return a value, but the caller expects one. (The ASL
14555 compiler flags this as a warning.)
14560 1. Static typechecking of all operands is implemented. This
14561 prevents the use of invalid objects (such as using a Package where
14562 an Integer is required) at compile time instead of at interpreter
14564 2. The ASL source line is printed with ALL errors and warnings.
14565 3. Bug fix for source EOF without final linefeed.
14566 4. Debug option is split into a parse trace and a namespace trace.
14567 5. Namespace output option (-n) includes initial values for
14568 integers and strings.
14569 6. Parse-only option added for quick syntax checking.
14570 7. Compiler checks for duplicate ACPI name declarations
14573 1. Relaxed typechecking to allow interchangeability between
14574 strings, integers, and buffers. These types are now converted by
14575 the interpreter at runtime.
14576 2. Compiler reports time taken by each internal subsystem in the
14580 ------------------------------------------
14581 Summary of changes for this label: 12_14_00
14585 This is the first official release of the compiler. Since the
14586 compiler requires elements of the Core Subsystem, this label
14587 synchronizes everything.
14589 ------------------------------------------
14590 Summary of changes for this label: 12_08_00
14593 Fixed a problem where named references within the ASL definition
14594 of both OperationRegions and CreateXXXFields did not work
14595 properly. The symptom was an AE_AML_OPERAND_TYPE during
14596 initialization of the region/field. This is similar (but not
14597 related internally) to the problem that was fixed in the last
14600 Implemented both 32-bit and 64-bit support for the BCD ASL
14601 functions ToBCD and FromBCD.
14603 Updated all legal headers to include "2000" in the copyright
14606 ------------------------------------------
14607 Summary of changes for this label: 12_01_00
14609 Fixed a problem where method invocations within the ASL definition
14610 of both OperationRegions and CreateXXXFields did not work
14611 properly. The symptom was an AE_AML_OPERAND_TYPE during
14612 initialization of the region/field:
14614 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
14615 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
14618 Fixed a problem where operators with more than one nested
14619 subexpression would fail. The symptoms were varied, by mostly
14620 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
14621 problem that has gone unnoticed until now.
14623 Subtract (Add (1,2), Multiply (3,4))
14625 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
14626 previous build (The prefix part of a relative path was handled
14629 Fixed a problem where Operation Region initialization failed if
14630 the operation region name was a "namepath" instead of a simple
14631 "nameseg". Symptom was an AE_NO_OPERAND error.
14633 Fixed a problem where an assignment to a local variable via the
14634 indirect RefOf mechanism only worked for the first such
14635 assignment. Subsequent assignments were ignored.
14637 ------------------------------------------
14638 Summary of changes for this label: 11_15_00
14640 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
14641 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
14642 the AML interpreter does NOT have support for the new 2.0 ASL
14643 grammar terms at this time.
14645 All ACPI hardware access is via the GAS structures in the ACPI 2.0
14648 All physical memory addresses across all platforms are now 64 bits
14649 wide. Logical address width remains dependent on the platform
14652 AcpiOsMapMemory interface changed to a 64-bit physical address.
14654 The AML interpreter integer size is now 64 bits, as per the ACPI
14657 For backwards compatibility with ACPI 1.0, ACPI tables with a
14658 revision number less than 2 use 32-bit integers only.
14660 Fixed a problem where the evaluation of OpRegion operands did not
14661 always resolve them to numbers properly.
14663 ------------------------------------------
14664 Summary of changes for this label: 10_20_00
14666 Fix for CBN_._STA issue. This fix will allow correct access to
14667 CBN_ OpRegions when the _STA returns 0x8.
14669 Support to convert ACPI constants (Ones, Zeros, One) to actual
14670 values before a package object is returned
14672 Fix for method call as predicate to if/while construct causing
14673 incorrect if/while behavior
14675 Fix for Else block package lengths sometimes calculated wrong (if
14678 Fix for Processor object length field, was always zero
14680 Table load abort if FACP sanity check fails
14682 Fix for problem with Scope(name) if name already exists
14684 Warning emitted if a named object referenced cannot be found
14685 (resolved) during method execution.
14691 ------------------------------------------
14692 Summary of changes for this label: 9_29_00
14694 New table initialization interfaces: AcpiInitializeSubsystem no
14695 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
14696 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
14697 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
14700 Note: These interface changes require changes to all existing OSDs
14702 The PCI_Config default address space handler is always installed
14703 at the root namespace object.
14705 -------------------------------------------
14706 Summary of changes for this label: 09_15_00
14708 The new initialization architecture is implemented. New
14709 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
14710 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
14712 (Namespace is automatically loaded when a table is loaded)
14714 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
14715 52 bytes to 32 bytes. There is usually one of these for every
14716 namespace object, so the memory savings is significant.
14718 Implemented just-in-time evaluation of the CreateField operators.
14720 Bug fixes for IA-64 support have been integrated.
14722 Additional code review comments have been implemented
14724 The so-called "third pass parse" has been replaced by a final walk
14725 through the namespace to initialize all operation regions (address
14726 spaces) and fields that have not yet been initialized during the
14727 execution of the various _INI and REG methods.
14729 New file - namespace/nsinit.c
14731 -------------------------------------------
14732 Summary of changes for this label: 09_01_00
14734 Namespace manager data structures have been reworked to change the
14735 primary object from a table to a single object. This has
14736 resulted in dynamic memory savings of 3X within the namespace and
14737 2X overall in the ACPI CA subsystem.
14739 Fixed problem where the call to AcpiEvFindPciRootBuses was
14740 inadvertently left commented out.
14742 Reduced the warning count when generating the source with the GCC
14745 Revision numbers added to each module header showing the
14746 SourceSafe version of the file. Please refer to this version
14747 number when giving us feedback or comments on individual modules.
14749 The main object types within the subsystem have been renamed to
14750 clarify their purpose:
14752 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
14753 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
14754 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
14756 NOTE: no changes to the initialization sequence are included in
14759 -------------------------------------------
14760 Summary of changes for this label: 08_23_00
14762 Fixed problem where TerminateControlMethod was being called
14763 multiple times per method
14765 Fixed debugger problem where single stepping caused a semaphore to
14768 Improved performance through additional parse object caching -
14769 added ACPI_EXTENDED_OP type
14771 -------------------------------------------
14772 Summary of changes for this label: 08_10_00
14774 Parser/Interpreter integration: Eliminated the creation of
14775 complete parse trees for ACPI tables and control methods.
14776 Instead, parse subtrees are created and then deleted as soon as
14777 they are processed (Either entered into the namespace or executed
14778 by the interpreter). This reduces the use of dynamic kernel
14779 memory significantly. (about 10X)
14781 Exception codes broken into classes and renumbered. Be sure to
14782 recompile all code that includes acexcep.h. Hopefully we won't
14783 have to renumber the codes again now that they are split into
14784 classes (environment, programmer, AML code, ACPI table, and
14787 Fixed some additional alignment issues in the Resource Manager
14790 Implemented semaphore tracking in the AcpiExec utility, and fixed
14791 several places where mutexes/semaphores were being unlocked
14792 without a corresponding lock operation. There are no known
14793 semaphore or mutex "leaks" at this time.
14795 Fixed the case where an ASL Return operator is used to return an
14798 -------------------------------------------
14799 Summary of changes for this label: 07_28_00
14801 Fixed a problem with the way addresses were calculated in
14802 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
14803 manifested itself when a Field was created with WordAccess or
14804 DwordAccess, but the field unit defined within the Field was less
14806 than a Word or Dword.
14808 Fixed a problem in AmlDumpOperands() module's loop to pull
14809 operands off of the operand stack to display information. The
14810 problem manifested itself as a TLB error on 64-bit systems when
14811 accessing an operand stack with two or more operands.
14813 Fixed a problem with the PCI configuration space handlers where
14814 context was getting confused between accesses. This required a
14815 change to the generic address space handler and address space
14816 setup definitions. Handlers now get both a global handler context
14817 (this is the one passed in by the user when executing
14818 AcpiInstallAddressSpaceHandler() and a specific region context
14819 that is unique to each region (For example, the _ADR, _SEG and
14820 _BBN values associated with a specific region). The generic
14821 function definitions have changed to the following:
14823 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
14824 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
14825 *HandlerContext, // This used to be void *Context void
14826 *RegionContext); // This is an additional parameter
14828 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
14829 RegionHandle, UINT32 Function, void *HandlerContext, void
14830 **RegionContext); // This used to be **ReturnContext
14832 -------------------------------------------
14833 Summary of changes for this label: 07_21_00
14835 Major file consolidation and rename. All files within the
14836 interpreter have been renamed as well as most header files. This
14837 was done to prevent collisions with existing files in the host
14838 OSs -- filenames such as "config.h" and "global.h" seem to be
14839 quite common. The VC project files have been updated. All
14840 makefiles will require modification.
14842 The parser/interpreter integration continues in Phase 5 with the
14843 implementation of a complete 2-pass parse (the AML is parsed
14844 twice) for each table; This avoids the construction of a huge
14845 parse tree and therefore reduces the amount of dynamic memory
14846 required by the subsystem. Greater use of the parse object cache
14847 means that performance is unaffected.
14849 Many comments from the two code reviews have been rolled in.
14851 The 64-bit alignment support is complete.
14853 -------------------------------------------
14854 Summary of changes for this label: 06_30_00
14856 With a nod and a tip of the hat to the technology of yesteryear,
14857 we've added support in the source code for 80 column output
14858 devices. The code is now mostly constrained to 80 columns or
14859 less to support environments and editors that 1) cannot display
14860 or print more than 80 characters on a single line, and 2) cannot
14861 disable line wrapping.
14863 A major restructuring of the namespace data structure has been
14864 completed. The result is 1) cleaner and more
14865 understandable/maintainable code, and 2) a significant reduction
14866 in the dynamic memory requirement for each named ACPI object
14869 -------------------------------------------
14870 Summary of changes for this label: 06_23_00
14872 Linux support has been added. In order to obtain approval to get
14873 the ACPI CA subsystem into the Linux kernel, we've had to make
14874 quite a few changes to the base subsystem that will affect all
14875 users (all the changes are generic and OS- independent). The
14876 effects of these global changes have been somewhat far reaching.
14877 Files have been merged and/or renamed and interfaces have been
14878 renamed. The major changes are described below.
14880 Osd* interfaces renamed to AcpiOs* to eliminate namespace
14881 pollution/confusion within our target kernels. All OSD
14882 interfaces must be modified to match the new naming convention.
14884 Files merged across the subsystem. A number of the smaller source
14885 and header files have been merged to reduce the file count and
14886 increase the density of the existing files. There are too many
14887 to list here. In general, makefiles that call out individual
14888 files will require rebuilding.
14890 Interpreter files renamed. All interpreter files now have the
14891 prefix am* instead of ie* and is*.
14893 Header files renamed: The acapi.h file is now acpixf.h. The
14894 acpiosd.h file is now acpiosxf.h. We are removing references to
14895 the acronym "API" since it is somewhat windowsy. The new name is
14896 "external interface" or xface or xf in the filenames.j
14899 All manifest constants have been forced to upper case (some were
14900 mixed case.) Also, the string "ACPI_" has been prepended to many
14901 (not all) of the constants, typedefs, and structs.
14903 The globals "DebugLevel" and "DebugLayer" have been renamed
14904 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
14906 All other globals within the subsystem are now prefixed with
14907 "AcpiGbl_" Internal procedures within the subsystem are now
14908 prefixed with "Acpi" (with only a few exceptions). The original
14909 two-letter abbreviation for the subcomponent remains after "Acpi"
14910 - for example, CmCallocate became AcpiCmCallocate.
14912 Added a source code translation/conversion utility. Used to
14913 generate the Linux source code, it can be modified to generate
14914 other types of source as well. Can also be used to cleanup
14915 existing source by removing extraneous spaces and blank lines.
14916 Found in tools/acpisrc/*
14918 OsdUnMapMemory was renamed to OsdUnmapMemory and then
14919 AcpiOsUnmapMemory. (UnMap became Unmap).
14921 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
14922 When set to one, this indicates that the caller wants to use the
14924 semaphore as a mutex, not a counting semaphore. ACPI CA uses
14925 both types. However, implementers of this call may want to use
14926 different OS primitives depending on the type of semaphore
14927 requested. For example, some operating systems provide separate
14929 "mutex" and "semaphore" interfaces - where the mutex interface is
14930 much faster because it doesn't have all the overhead of a full
14931 semaphore implementation.
14933 Fixed a deadlock problem where a method that accesses the PCI
14934 address space can block forever if it is the first access to the
14937 -------------------------------------------
14938 Summary of changes for this label: 06_02_00
14940 Support for environments that cannot handle unaligned data
14941 accesses (e.g. firmware and OS environments devoid of alignment
14942 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
14943 been added (via configurable macros) in these three areas: -
14944 Transfer of data from the raw AML byte stream is done via byte
14945 moves instead of word/dword/qword moves. - External objects are
14946 aligned within the user buffer, including package elements (sub-
14947 objects). - Conversion of name strings to UINT32 Acpi Names is now
14950 The Store operator was modified to mimic Microsoft's
14951 implementation when storing to a Buffer Field.
14953 Added a check of the BM_STS bit before entering C3.
14955 The methods subdirectory has been obsoleted and removed. A new
14956 file, cmeval.c subsumes the functionality.
14958 A 16-bit (DOS) version of AcpiExec has been developed. The
14959 makefile is under the acpiexec directory.