1 ----------------------------------------
2 04 February 2015. Summary of changes for version 20150204:
4 This release is available at https://acpica.org/downloads
6 ACPICA kernel-resident subsystem:
8 Updated all ACPICA copyrights and signons to 2014. Added the 2014
9 copyright to all module headers and signons, including the standard Linux
10 header. This affects virtually every file in the ACPICA core subsystem,
11 iASL compiler, all ACPICA utilities, and the test suites.
13 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
14 A raw gpe handling mechanism was created to allow better handling of GPE
15 storms that aren't easily managed by the normal handler. The raw handler
16 allows disabling/renabling of the the GPE so that interrupt storms can be
17 avoided in cases where events cannot be timely serviced. In this scenario,
18 handlers should use the AcpiSetGpe() API to disable/enable the GPE. This API
19 will leave the reference counts undisturbed, thereby preventing unintentional
20 clearing of the GPE when the intent in only to temporarily disable it. Raw
21 handlers allow enabling and disabling of a GPE by removing GPE register
22 locking. As such, raw handlers much provide their own locks while using
23 GPE API's to protect access to GPE data structures.
26 Events: Always modify GPE registers under the GPE lock.
27 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
28 values. Reported as bug by joe.liu@apple.com.
30 Unix makefiles: Separate option to disable optimizations and _FORTIFY_SOURCE.
31 This change removes the _FORTIFY_SOURCE flag from the NOOPT disable option and
32 creates a separate flag (NOFORTIFY) for this purpose. Some toolchains may
33 define _FORTIFY_SOURCE which leads redefined errors when building ACPICA. This
34 allows disabling the option without also having to disable optimazations.
38 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
39 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
41 ----------------------------------------
42 07 November 2014. Summary of changes for version 20141107:
44 This release is available at https://acpica.org/downloads
46 This release introduces and implements language extensions to ASL that
47 provide support for symbolic ("C-style") operators and expressions. These
48 language extensions are known collectively as ASL+.
51 1) iASL Compiler/Disassembler and Tools:
53 Disassembler: Fixed a problem with disassembly of the UartSerialBus
54 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
57 Disassembler: Fixed the Unicode macro support to add escape sequences.
58 All non-printable ASCII values are emitted as escape sequences, as well
59 as the standard escapes for quote and backslash. Ensures that the
60 disassembled macro can be correctly recompiled.
62 iASL: Added Printf/Fprintf macros for formatted output. These macros are
63 translated to existing AML Concatenate and Store operations. Printf
64 writes to the ASL Debug object. Fprintf allows the specification of an
65 ASL name as the target. Only a single format specifier is required, %o,
66 since the AML interpreter dynamically converts objects to the required
69 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
70 (Concatenate (Concatenate (Concatenate ("", Arg0),
71 ": Unexpected value for "), Arg1), ", "), Arg2),
72 " at line "), Arg3), Debug)
74 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
75 Arg0, Arg1, Arg2, Arg3)
77 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
78 ("", Arg1), ": "), Arg0), " Successful"), STR1)
80 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
82 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
83 ASL parse tree before the AML code is generated. This allows blocks of
84 ASL code to be removed in order to help locate and identify problem
85 devices and/or code. David E. Box.
87 AcpiExec: Added support (-fi) for an optional namespace object
88 initialization file. This file specifies initial values for namespace
89 objects as necessary for debugging and testing different ASL code paths
90 that may be taken as a result of BIOS options.
93 2) Overview of symbolic operator support for ASL (ASL+)
94 -------------------------------------------------------
96 As an extension to the ASL language, iASL implements support for symbolic
97 (C-style) operators for math and logical expressions. This can greatly
98 simplify ASL code as well as improve both readability and
99 maintainability. These language extensions can exist concurrently with
100 all legacy ASL code and expressions.
102 The symbolic extensions are 100% compatible with existing AML
103 interpreters, since no new AML opcodes are created. To implement the
104 extensions, the iASL compiler transforms the symbolic expressions into
105 the legacy ASL/AML equivalents at compile time.
107 Full symbolic expressions are supported, along with the standard C
108 precedence and associativity rules.
110 Full disassembler support for the symbolic expressions is provided, and
111 creates an automatic migration path for existing ASL code to ASL+ code
112 via the disassembly process. By default, the disassembler now emits ASL+
113 code with symbolic expressions. An option (-dl) is provided to force the
114 disassembler to emit legacy ASL code if desired.
116 Below is the complete list of the currently supported symbolic operators
117 with examples. See the iASL User Guide for additional information.
120 ASL+ Syntax Legacy ASL Equivalent
121 ----------- ---------------------
125 Z = X + Y Add (X, Y, Z)
126 Z = X - Y Subtract (X, Y, Z)
127 Z = X * Y Multiply (X, Y, Z)
128 Z = X / Y Divide (X, Y, , Z)
129 Z = X % Y Mod (X, Y, Z)
130 Z = X << Y ShiftLeft (X, Y, Z)
131 Z = X >> Y ShiftRight (X, Y, Z)
132 Z = X & Y And (X, Y, Z)
133 Z = X | Y Or (X, Y, Z)
134 Z = X ^ Y Xor (X, Y, Z)
141 (X == Y) LEqual (X, Y)
142 (X != Y) LNotEqual (X, Y)
144 (X > Y) LGreater (X, Y)
145 (X <= Y) LLessEqual (X, Y)
146 (X >= Y) LGreaterEqual (X, Y)
151 // Assignment and compound assignment operations
155 X -= Y Subtract (X, Y, X)
156 X *= Y Multiply (X, Y, X)
157 X /= Y Divide (X, Y, , X)
159 X <<= Y ShiftLeft (X, Y, X)
160 X >>= Y ShiftRight (X, Y, X)
170 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
171 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
173 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
175 And (MEMB, 0xFFFFFFF0, SRMB)
178 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
180 Or (PDBM, 0x02, PDBM)
184 If (((R510 & 0x03FB) == 0x02E0) ||
185 ((R520 & 0x03FB) == 0x02E0) ||
186 ((R530 & 0x03FB) == 0x02E0) ||
187 ((R540 & 0x03FB) == 0x02E0))
189 SRMB = (MEMB & 0xFFFFFFF0)
192 PDBM &= 0xFFFFFFFFFFFFFFF9
198 Store (0x1234, Local1)
199 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
200 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
201 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
202 Store (Index (PKG1, 0x03), Local6)
203 Store (Add (Local3, Local2), Debug)
204 Add (Local1, 0x0F, Local2)
205 Add (Local1, Multiply (Local2, Local3), Local2)
206 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
210 Local3 = (((Local1 + TEST) + 0x20) * Local2)
211 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
212 Local3 = (Local1 + (TEST + (0x20 * Local2)))
213 Local6 = Index (PKG1, 0x03)
214 Debug = (Local3 + Local2)
215 Local2 = (Local1 + 0x0F)
216 Local2 = (Local1 + (Local2 * Local3))
217 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
220 ----------------------------------------
221 26 September 2014. Summary of changes for version 20140926:
223 1) ACPICA kernel-resident subsystem:
225 Updated the GPIO operation region handler interface (GeneralPurposeIo).
226 In order to support GPIO Connection objects with multiple pins, along
227 with the related Field objects, the following changes to the interface
228 have been made: The Address is now defined to be the offset in bits of
229 the field unit from the previous invocation of a Connection. It can be
230 viewed as a "Pin Number Index" into the connection resource descriptor.
231 The BitWidth is the exact bit width of the field. It is usually one bit,
232 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
233 additional information and examples.
235 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
236 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
237 by the firmware), so that they cannot fire until they are enabled via
238 AcpiUpdateAllGpes. Rafael J. Wysocki.
240 Added a new return flag for the Event/GPE status interfaces --
241 AcpiGetEventStatus and AcpiGetGpeStatus. The new
242 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
243 GPE currently has a handler associated with it, and can thus actually
244 affect the system. Lv Zheng.
246 Example Code and Data Size: These are the sizes for the OS-independent
247 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
248 debug version of the code includes the debug output trace mechanism and
249 has a much larger code and data size.
252 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
253 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
255 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
256 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
258 2) iASL Compiler/Disassembler and Tools:
260 iASL: Fixed a memory allocation/free regression introduced in 20140828
261 that could cause the compiler to crash. This was introduced inadvertently
262 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
265 iASL: Removed two error messages that have been found to create false
266 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
267 1) Illegal forward reference within a method
268 2) Illegal reference across two methods
270 iASL: Implemented a new option (-lm) to create a hardware mapping file
271 that summarizes all GPIO, I2C, SPI, and UART connections. This option
272 works for both the compiler and disassembler. See the iASL compiler user
273 guide for additional information and examples (section 6.4.6).
275 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
276 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
277 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
279 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
280 unless STDIN is actually a terminal. Assists with batch-mode processing.
283 Disassembler/AcpiHelp: Added another large group of recognized _HID
287 ----------------------------------------
288 28 August 2014. Summary of changes for version 20140828:
290 1) ACPICA kernel-resident subsystem:
292 Fixed a problem related to the internal use of the Timer() operator where
293 a 64-bit divide could cause an attempted link to a double-precision math
294 library. This divide is not actually necessary, so the code was
295 restructured to eliminate it. Lv Zheng.
297 ACPI 5.1: Added support for the runtime validation of the _DSD package
298 (similar to the iASL support).
300 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
301 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
303 Example Code and Data Size: These are the sizes for the OS-independent
304 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
305 debug version of the code includes the debug output trace mechanism and
306 has a much larger code and data size.
309 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
310 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
312 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
313 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
315 2) iASL Compiler/Disassembler and Tools:
317 AcpiExec: Fixed a problem on unix systems where the original terminal
318 state was not always properly restored upon exit. Seen when using the -v
319 option. ACPICA BZ 1104.
321 iASL: Fixed a problem with the validation of the ranges/length within the
322 Memory24 resource descriptor. There was a boundary condition when the
323 range was equal to the (length -1) caused by the fact that these values
324 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
326 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
328 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
330 now supported properly.
332 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
333 in the disassembler, data table compiler, and table template generator.
335 iASL: Added a requirement for Device() objects that one of either a _HID
336 or _ADR must exist within the scope of a Device, as per the ACPI
337 specification. Remove a similar requirement that was incorrectly in place
340 iASL: Added error detection for illegal named references within control
341 methods that would cause runtime failures. Now trapped as errors are: 1)
342 References to objects within a non-parent control method. 2) Forward
343 references (within a method) -- for control methods, AML interpreters use
344 a one-pass parse of control methods. ACPICA BZ 1008.
346 iASL: Added error checking for dependencies related to the _PSx power
347 methods. ACPICA BZ 1029.
348 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
350 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
353 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
354 deploying the existing object and string caches and adding new caches for
357 iASL: Split the huge parser source file into multiple subfiles to improve
358 manageability. Generation now requires the M4 macro preprocessor, which
359 is part of the Bison distribution on both unix and windows platforms.
361 AcpiSrc: Fixed and removed all extraneous warnings generated during
362 entire ACPICA source code scan and/or conversion.
365 ----------------------------------------
367 24 July 2014. Summary of changes for version 20140724:
369 The ACPI 5.1 specification has been released and is available at:
370 http://uefi.org/specs/access
373 0) ACPI 5.1 support in ACPICA:
375 ACPI 5.1 is fully supported in ACPICA as of this release.
377 New predefined names. Support includes iASL and runtime ACPICA
379 _CCA (Cache Coherency Attribute).
380 _DSD (Device-Specific Data). David Box.
382 Modifications to existing ACPI tables. Support includes headers, iASL
383 Data Table compiler, disassembler, and the template generator.
384 FADT - New fields and flags. Graeme Gregory.
385 GTDT - One new subtable and new fields. Tomasz Nowicki.
386 MADT - Two new subtables. Tomasz Nowicki.
387 PCCT - One new subtable.
390 New notification type for System Resource Affinity change events.
393 1) ACPICA kernel-resident subsystem:
395 Fixed a regression introduced in 20140627 where a fault can happen during
396 the deletion of Alias AML namespace objects. The problem affected both
397 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
399 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
400 simple mechanism to enable wake GPEs that have no associated handler or
401 control method. Rafael Wysocki.
403 Updated the AcpiEnableGpe interface to disallow the enable if there is no
404 handler or control method associated with the particular GPE. This will
405 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
407 Updated GPE handling and dispatch by disabling the GPE before clearing
408 the status bit for edge-triggered GPEs. Lv Zheng.
410 Added Timer() support to the AML Debug object. The current timer value is
411 now displayed with each invocation of (Store to) the debug object to
412 enable simple generation of execution times for AML code (method
413 execution for example.) ACPICA BZ 1093.
415 Example Code and Data Size: These are the sizes for the OS-independent
416 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
417 debug version of the code includes the debug output trace mechanism and
418 has a much larger code and data size.
421 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
422 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
424 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
425 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
428 2) iASL Compiler/Disassembler and Tools:
430 Fixed an issue with the recently added local printf implementation,
431 concerning width/precision specifiers that could cause incorrect output.
432 Lv Zheng. ACPICA BZ 1094.
434 Disassembler: Added support to detect buffers that contain UUIDs and
435 disassemble them to an invocation of the ToUUID operator. Also emit
436 commented descriptions of known ACPI-related UUIDs.
438 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
439 -u. Adds three new files.
441 iASL: Update table compiler and disassembler for DMAR table changes that
442 were introduced in September 2013. With assistance by David Woodhouse.
444 ----------------------------------------
445 27 June 2014. Summary of changes for version 20140627:
447 1) ACPICA kernel-resident subsystem:
449 Formatted Output: Implemented local versions of standard formatted output
450 utilities such as printf, etc. Over time, it has been discovered that
451 there are in fact many portability issues with printf, and the addition
452 of this feature will fix/prevent these issues once and for all. Some
453 known issues are summarized below:
455 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
456 for the Linux kernel and is %uI64 for some MSVC versions.
457 2) Invoking printf consistently in a manner that is portable across both
458 32-bit and 64-bit platforms is difficult at best in many situations.
459 3) The output format for pointers varies from system to system (leading
460 zeros especially), and leads to inconsistent output from ACPICA across
462 4) Certain platform-specific printf formats may conflict with ACPICA use.
463 5) If there is no local C library available, ACPICA now has local support
466 -- To address these printf issues in a complete manner, ACPICA now
467 directly implements a small subset of printf format specifiers, only
468 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
470 Implemented support for ACPICA generation within the EFI environment.
471 Initially, the AcpiDump utility is supported in the UEFI shell
472 environment. Lv Zheng.
474 Added a new external interface, AcpiLogError, to improve ACPICA
475 portability. This allows the host to redirect error messages from the
476 ACPICA utilities. Lv Zheng.
478 Added and deployed new OSL file I/O interfaces to improve ACPICA
486 There are C library implementations of these functions in the new file
487 service_layers/oslibcfs.c -- however, the functions can be implemented by
488 the local host in any way necessary. Lv Zheng.
490 Implemented a mechanism to disable/enable ACPI table checksum validation
491 at runtime. This can be useful when loading tables very early during OS
492 initialization when it may not be possible to map the entire table in
493 order to compute the checksum. Lv Zheng.
495 Fixed a buffer allocation issue for the Generic Serial Bus support.
496 Originally, a fixed buffer length was used. This change allows for
497 variable-length buffers based upon the protocol indicated by the field
498 access attributes. Reported by Lan Tianyu. Lv Zheng.
500 Fixed a problem where an object detached from a namespace node was not
501 properly terminated/cleared and could cause a circular list problem if
502 reattached. ACPICA BZ 1063. David Box.
504 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
506 Fixed a possible memory leak in an error return path within the function
507 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
509 Example Code and Data Size: These are the sizes for the OS-independent
510 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
511 debug version of the code includes the debug output trace mechanism and
512 has a much larger code and data size.
515 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
516 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
518 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
519 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
522 2) iASL Compiler/Disassembler and Tools:
524 Disassembler: Add dump of ASCII equivalent text within a comment at the
525 end of each line of the output for the Buffer() ASL operator.
527 AcpiDump: Miscellaneous changes:
528 Fixed repetitive table dump in -n mode.
529 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
530 the ACPI 2.0 GUID fails.
532 iASL: Fixed a problem where the compiler could fault if incorrectly given
533 an acpidump output file as input. ACPICA BZ 1088. David Box.
535 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
536 they are invoked without any arguments.
538 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
539 1086. Colin Ian King.
541 Disassembler: Cleaned up a block of code that extracts a parent Op
542 object. Added a comment that explains that the parent is guaranteed to be
543 valid in this case. ACPICA BZ 1069.
545 ----------------------------------------
546 24 April 2014. Summary of changes for version 20140424:
548 1) ACPICA kernel-resident subsystem:
550 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
551 Some of these tables are known to contain a trailing NULL entry. Lv
554 Removed an extraneous error message for the case where there are a large
555 number of system GPEs (> 124). This was the "32-bit FADT register is too
556 long to convert to GAS struct" message, which is irrelevant for GPEs
557 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
558 (limited capacity) GAS bit length. Also, several changes to ensure proper
559 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
562 Implemented and deployed additional configuration support for the public
563 ACPICA external interfaces. Entire classes of interfaces can now be
564 easily modified or configured out, replaced by stubbed inline functions
565 by default. Lv Zheng.
567 Moved all public ACPICA runtime configuration globals to the public
568 ACPICA external interface file for convenience. Also, removed some
569 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
571 Documentation: Added a new section to the ACPICA reference describing the
572 maximum number of GPEs that can be supported by the FADT-defined GPEs in
573 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
576 Example Code and Data Size: These are the sizes for the OS-independent
577 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
578 debug version of the code includes the debug output trace mechanism and
579 has a much larger code and data size.
582 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
583 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
585 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
586 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
589 2) iASL Compiler/Disassembler and Tools:
591 iASL and disassembler: Add full support for the LPIT table (Low Power
592 Idle Table). Includes support in the disassembler, data table compiler,
593 and template generator.
596 1) Add option to force the use of the RSDT (over the XSDT).
597 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
599 iASL: Add check for predefined packages that are too large. For
600 predefined names that contain subpackages, check if each subpackage is
601 too large. (Check for too small already exists.)
603 Debugger: Updated the GPE command (which simulates a GPE by executing the
604 GPE code paths in ACPICA). The GPE device is now optional, and defaults
605 to the GPE 0/1 FADT-defined blocks.
607 Unix application OSL: Update line-editing support. Add additional error
608 checking and take care not to reset terminal attributes on exit if they
609 were never set. This should help guarantee that the terminal is always
610 left in the previous state on program exit.
612 ----------------------------------------
613 25 March 2014. Summary of changes for version 20140325:
615 1) ACPICA kernel-resident subsystem:
617 Updated the auto-serialize feature for control methods. This feature
618 automatically serializes all methods that create named objects in order
619 to prevent runtime errors. The update adds support to ignore the
620 currently executing AML SyncLevel when invoking such a method, in order
621 to prevent disruption of any existing SyncLevel priorities that may exist
622 in the AML code. Although the use of SyncLevels is relatively rare, this
623 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
624 appear on some machines starting with the 20140214 release.
626 Added a new external interface to allow the host to install ACPI tables
627 very early, before the namespace is even created. AcpiInstallTable gives
628 the host additional flexibility for ACPI table management. Tables can be
629 installed directly by the host as if they had originally appeared in the
630 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
631 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
632 with additional internal restructuring and cleanup. See the ACPICA
633 Reference for interface details. Lv Zheng.
635 Added validation of the checksum for all incoming dynamically loaded
636 tables (via external interfaces or via AML Load/LoadTable operators). Lv
639 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
640 and GPE handler removal. Restructured calls to eliminate possible race
641 conditions. Lv Zheng.
643 Added a warning for the use/execution of the ASL/AML Unload (table)
644 operator. This will help detect and identify machines that use this
645 operator if and when it is ever used. This operator has never been seen
646 in the field and the usage model and possible side-effects of the drastic
647 runtime action of a full table removal are unknown.
649 Reverted the use of #pragma push/pop which was introduced in the 20140214
650 release. It appears that push and pop are not implemented by enough
651 compilers to make the use of this feature feasible for ACPICA at this
652 time. However, these operators may be deployed in a future ACPICA
655 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
658 Source code generation:
659 1) Disabled the use of the "strchr" macro for the gcc-specific
660 generation. For some versions of gcc, this macro can periodically expose
661 a compiler bug which in turn causes compile-time error(s).
662 2) Added support for PPC64 compilation. Colin Ian King.
664 Example Code and Data Size: These are the sizes for the OS-independent
665 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
666 debug version of the code includes the debug output trace mechanism and
667 has a much larger code and data size.
670 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
671 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
673 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
674 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
677 2) iASL Compiler/Disassembler and Tools:
679 Disassembler: Added several new features to improve the readability of
680 the resulting ASL code. Extra information is emitted within comment
681 fields in the ASL code:
682 1) Known _HID/_CID values are decoded to descriptive text.
683 2) Standard values for the Notify() operator are decoded to descriptive
685 3) Target operands are expanded to full pathnames (in a comment) when
688 Disassembler: Miscellaneous updates for extern() handling:
689 1) Abort compiler if file specified by -fe option does not exist.
690 2) Silence unnecessary warnings about argument count mismatches.
691 3) Update warning messages concerning unresolved method externals.
692 4) Emit "UnknownObj" keyword for externals whose type cannot be
696 1) Added the -a option to display both the ASL syntax and the AML
697 encoding for an input ASL operator. This effectively displays all known
698 information about an ASL operator with one AcpiHelp invocation.
699 2) Added substring match support (similar to a wildcard) for the -i
700 (_HID/PNP IDs) option.
702 iASL/Disassembler: Since this tool does not yet support execution on big-
703 endian machines, added detection of endianness and an error message if
704 execution is attempted on big-endian. Support for big-endian within iASL
705 is a feature that is on the ACPICA to-be-done list.
708 1) Remove option to extract binary files from an acpidump; this function
709 is made obsolete by the AcpiXtract utility.
710 2) General cleanup of open files and allocated buffers.
712 ----------------------------------------
713 14 February 2014. Summary of changes for version 20140214:
715 1) ACPICA kernel-resident subsystem:
717 Implemented a new mechanism to proactively prevent problems with ill-
718 behaved reentrant control methods that create named ACPI objects. This
719 behavior is illegal as per the ACPI specification, but is nonetheless
720 frequently seen in the field. Previously, this could lead to an
721 AE_ALREADY_EXISTS exception if the method was actually entered by more
722 than one thread. This new mechanism detects such methods at table load
723 time and marks them "serialized" to prevent reentrancy. A new global
724 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
725 feature if desired. This mechanism and global option obsoletes and
726 supersedes the previous AcpiGbl_SerializeAllMethods option.
728 Added the "Windows 2013" string to the _OSI support. ACPICA will now
729 respond TRUE to _OSI queries with this string. It is the stated policy of
730 ACPICA to add new strings to the _OSI support as soon as possible after
731 they are defined. See the full ACPICA _OSI policy which has been added to
732 the utilities/utosi.c file.
734 Hardened/updated the _PRT return value auto-repair code:
735 1) Do not abort the repair on a single subpackage failure, continue to
736 check all subpackages.
737 2) Add check for the minimum subpackage length (4).
738 3) Properly handle extraneous NULL package elements.
740 Added support to avoid the possibility of infinite loops when traversing
741 object linked lists. Never allow an infinite loop, even in the face of
742 corrupted object lists.
744 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
745 pack(pop) directives to ensure that the ACPICA headers are independent of
746 compiler settings or other host headers.
748 Example Code and Data Size: These are the sizes for the OS-independent
749 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
750 debug version of the code includes the debug output trace mechanism and
751 has a much larger code and data size.
754 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
755 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
757 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
758 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
761 2) iASL Compiler/Disassembler and Tools:
763 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
764 first reserved field was incorrectly forced to have a value of zero. This
765 change correctly forces the field to have a value of one. ACPICA BZ 1081.
767 Debugger: Added missing support for the "Extra" and "Data" subobjects
768 when displaying object data.
770 Debugger: Added support to display entire object linked lists when
771 displaying object data.
773 iASL: Removed the obsolete -g option to obtain ACPI tables from the
774 Windows registry. This feature has been superseded by the acpidump
777 ----------------------------------------
778 14 January 2014. Summary of changes for version 20140114:
780 1) ACPICA kernel-resident subsystem:
782 Updated all ACPICA copyrights and signons to 2014. Added the 2014
783 copyright to all module headers and signons, including the standard Linux
784 header. This affects virtually every file in the ACPICA core subsystem,
785 iASL compiler, all ACPICA utilities, and the test suites.
787 Improved parameter validation for AcpiInstallGpeBlock. Added the
789 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
790 2) There is not already a GPE block attached to the device.
791 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
794 Correctly support "references" in the ACPI_OBJECT. This change fixes the
795 support to allow references (namespace nodes) to be passed as arguments
796 to control methods via the evaluate object interface. This is probably
797 most useful for testing purposes, however.
799 Improved support for 32/64 bit physical addresses in printf()-like
800 output. This change improves the support for physical addresses in printf
801 debug statements and other output on both 32-bit and 64-bit hosts. It
802 consistently outputs the appropriate number of bytes for each host. The
803 %p specifier is unsatisfactory since it does not emit uniform output on
804 all hosts/clib implementations (on some, leading zeros are not supported,
805 leading to difficult-to-read output).
807 Example Code and Data Size: These are the sizes for the OS-independent
808 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
809 debug version of the code includes the debug output trace mechanism and
810 has a much larger code and data size.
813 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
814 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
816 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
817 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
820 2) iASL Compiler/Disassembler and Tools:
822 iASL: Fix a possible fault when using the Connection() operator. Fixes a
823 problem if the parent Field definition for the Connection operator refers
824 to an operation region that does not exist. ACPICA BZ 1064.
826 AcpiExec: Load of local test tables is now optional. The utility has the
827 capability to load some various tables to test features of ACPICA.
828 However, there are enough of them that the output of the utility became
829 confusing. With this change, only the required local tables are displayed
830 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
831 line specification. This makes the default output simler and easier to
832 understand. The -el command line option restores the original behavior
833 for testing purposes.
835 AcpiExec: Added support for overlapping operation regions. This change
836 expands the simulation of operation regions by supporting regions that
837 overlap within the given address space. Supports SystemMemory and
838 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
840 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
841 allows AcpiExec to simulate these address spaces, similar to the current
842 support for SystemMemory and SystemIO.
844 Debugger: Added new command to read/write/compare all namespace objects.
845 The command "test objects" will exercise the entire namespace by writing
846 new values to each data object, and ensuring that the write was
847 successful. The original value is then restored and verified.
849 Debugger: Added the "test predefined" command. This change makes this
850 test public and puts it under the new "test" command. The test executes
851 each and every predefined name within the current namespace.
853 ----------------------------------------
854 18 December 2013. Summary of changes for version 20131218:
856 Global note: The ACPI 5.0A specification was released this month. There
857 are no changes needed for ACPICA since this release of ACPI is an
858 errata/clarification release. The specification is available at
862 1) ACPICA kernel-resident subsystem:
864 Added validation of the XSDT root table if it is present. Some older
865 platforms contain an XSDT that is ill-formed or otherwise invalid (such
866 as containing some or all entries that are NULL pointers). This change
867 adds a new function to validate the XSDT before actually using it. If the
868 XSDT is found to be invalid, ACPICA will now automatically fall back to
869 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
870 ACPICA and enhanced by Lv Zheng and Bob Moore.
872 Added a runtime option to ignore the XSDT and force the use of the RSDT.
873 This change adds a runtime option that will force ACPICA to use the RSDT
874 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
875 requires that an XSDT be used instead of the RSDT, the XSDT has been
876 found to be corrupt or ill-formed on some machines. Lv Zheng.
878 Added a runtime option to favor 32-bit FADT register addresses over the
879 64-bit addresses. This change adds an option to favor 32-bit FADT
880 addresses when there is a conflict between the 32-bit and 64-bit versions
881 of the same register. The default behavior is to use the 64-bit version
882 in accordance with the ACPI specification. This can now be overridden via
883 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
885 During the change above, the internal "Convert FADT" and "Verify FADT"
886 functions have been merged to simplify the code, making it easier to
887 understand and maintain. ACPICA BZ 933.
889 Improve exception reporting and handling for GPE block installation.
890 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
891 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
893 Added helper macros to extract bus/segment numbers from the HEST table.
894 This change adds two macros to extract the encoded bus and segment
895 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
896 Betty Dall <betty.dall@hp.com>
898 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
899 by ACPICA. It is not a public macro, so it should have no effect on
900 existing OSV code. Lv Zheng.
902 Example Code and Data Size: These are the sizes for the OS-independent
903 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
904 debug version of the code includes the debug output trace mechanism and
905 has a much larger code and data size.
908 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
909 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
911 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
912 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
915 2) iASL Compiler/Disassembler and Tools:
917 Disassembler: Improved pathname support for emitted External()
918 statements. This change adds full pathname support for external names
919 that have been resolved internally by the inclusion of additional ACPI
920 tables (via the iASL -e option). Without this change, the disassembler
921 can emit multiple externals for the same object, or it become confused
922 when the Scope() operator is used on an external object. Overall, greatly
923 improves the ability to actually recompile the emitted ASL code when
924 objects a referenced across multiple ACPI tables. Reported by Michael
925 Tsirkin (mst@redhat.com).
927 Tests/ASLTS: Updated functional control suite to execute with no errors.
928 David Box. Fixed several errors related to the testing of the interpreter
929 slack mode. Lv Zheng.
931 iASL: Added support to detect names that are declared within a control
932 method, but are unused (these are temporary names that are only valid
933 during the time the method is executing). A remark is issued for these
934 cases. ACPICA BZ 1022.
936 iASL: Added full support for the DBG2 table. Adds full disassembler,
937 table compiler, and template generator support for the DBG2 table (Debug
940 iASL: Added full support for the PCCT table, update the table definition.
941 Updates the PCCT table definition in the actbl3.h header and adds table
942 compiler and template generator support.
944 iASL: Added an option to emit only error messages (no warnings/remarks).
945 The -ve option will enable only error messages, warnings and remarks are
946 suppressed. This can simplify debugging when only the errors are
947 important, such as when an ACPI table is disassembled and there are many
948 warnings and remarks -- but only the actual errors are of real interest.
950 Example ACPICA code (source/tools/examples): Updated the example code so
951 that it builds to an actual working program, not just example code. Added
952 ACPI tables and execution of an example control method in the DSDT. Added
953 makefile support for Unix generation.
955 ----------------------------------------
956 15 November 2013. Summary of changes for version 20131115:
958 This release is available at https://acpica.org/downloads
961 1) ACPICA kernel-resident subsystem:
963 Resource Manager: Fixed loop termination for the "get AML length"
964 function. The loop previously had an error termination on a NULL resource
965 pointer, which can never happen since the loop simply increments a valid
966 resource pointer. This fix changes the loop to terminate with an error on
967 an invalid end-of-buffer condition. The problem can be seen as an
968 infinite loop by callers to AcpiSetCurrentResources with an invalid or
969 corrupted resource descriptor, or a resource descriptor that is missing
970 an END_TAG descriptor. Reported by Dan Carpenter
971 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
973 Table unload and ACPICA termination: Delete all attached data objects
974 during namespace node deletion. This fix updates namespace node deletion
975 to delete the entire list of attached objects (attached via
976 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
977 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
979 ACPICA termination: Added support to delete all objects attached to the
980 root namespace node. This fix deletes any and all objects that have been
981 attached to the root node via AcpiAttachData. Previously, none of these
982 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
984 Debug output: Do not emit the function nesting level for the in-kernel
985 build. The nesting level is really only useful during a single-thread
986 execution. Therefore, only enable this output for the AcpiExec utility.
987 Also, only emit the thread ID when executing under AcpiExec (Context
988 switches are still always detected and a message is emitted). ACPICA BZ
991 Example Code and Data Size: These are the sizes for the OS-independent
992 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
993 debug version of the code includes the debug output trace mechanism and
994 has a much larger code and data size.
997 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
998 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1000 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1001 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1004 2) iASL Compiler/Disassembler and Tools:
1006 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
1007 correct portable POSIX header for terminal control functions.
1009 Disassembler: Fixed control method invocation issues related to the use
1010 of the CondRefOf() operator. The problem is seen in the disassembly where
1011 control method invocations may not be disassembled properly if the
1012 control method name has been used previously as an argument to CondRefOf.
1013 The solution is to not attempt to emit an external declaration for the
1014 CondRefOf target (it is not necessary in the first place). This prevents
1015 disassembler object type confusion. ACPICA BZ 988.
1017 Unix Makefiles: Added an option to disable compiler optimizations and the
1018 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
1019 with optimizations (reportedly, gcc 4.4 for example). This change adds a
1020 command line option for make (NOOPT) that disables all compiler
1021 optimizations and the _FORTIFY_SOURCE compiler flag. The default
1022 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
1023 1034. Lv Zheng, Bob Moore.
1025 Tests/ASLTS: Added options to specify individual test cases and modes.
1026 This allows testers running aslts.sh to optionally specify individual
1027 test modes and test cases. Also added an option to disable the forced
1028 generation of the ACPICA tools from source if desired. Lv Zheng.
1030 ----------------------------------------
1031 27 September 2013. Summary of changes for version 20130927:
1033 This release is available at https://acpica.org/downloads
1036 1) ACPICA kernel-resident subsystem:
1038 Fixed a problem with store operations to reference objects. This change
1039 fixes a problem where a Store operation to an ArgX object that contained
1041 reference to a field object did not complete the automatic dereference
1043 then write to the actual field object. Instead, the object type of the
1044 field object was inadvertently changed to match the type of the source
1045 operand. The new behavior will actually write to the field object (buffer
1046 field or field unit), thus matching the correct ACPI-defined behavior.
1048 Implemented support to allow the host to redefine individual OSL
1049 prototypes. This change enables the host to redefine OSL prototypes found
1050 in the acpiosxf.h file. This allows the host to implement OSL interfaces
1051 with a macro or inlined function. Further, it allows the host to add any
1052 additional required modifiers such as __iomem, __init, __exit, etc., as
1053 necessary on a per-interface basis. Enables maximum flexibility for the
1054 OSL interfaces. Lv Zheng.
1056 Hardcoded the access width for the FADT-defined reset register. The ACPI
1057 specification requires the reset register width to be 8 bits. ACPICA now
1058 hardcodes the width to 8 and ignores the FADT width value. This provides
1059 compatibility with other ACPI implementations that have allowed BIOS code
1060 with bad register width values to go unnoticed. Matthew Garett, Bob
1064 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
1066 in the OSL header (acpiosxf). The change modifies the position of this
1067 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
1068 build issues if the OSL defines the implementation of the interface to be
1069 an inline stub function. Lv Zheng.
1071 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
1072 initialization interfaces. This change adds a new macro for the main init
1073 and terminate external interfaces in order to support hosts that require
1074 additional or different processing for these functions. Changed from
1075 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
1078 Cleaned up the memory allocation macros for configurability. In the
1080 case, the ACPI_ALLOCATE and related macros now resolve directly to their
1081 respective AcpiOs* OSL interfaces. Two options:
1082 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
1083 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
1084 2) For AcpiExec (and for debugging), the macros can optionally be
1086 to the local ACPICA interfaces that track each allocation (local tracking
1087 is used to immediately detect memory leaks).
1090 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
1091 to predefine this macro to either TRUE or FALSE during the system build.
1093 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
1095 Example Code and Data Size: These are the sizes for the OS-independent
1096 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1097 debug version of the code includes the debug output trace mechanism and
1098 has a much larger code and data size.
1101 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1102 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1104 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1105 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1108 2) iASL Compiler/Disassembler and Tools:
1110 iASL: Implemented wildcard support for the -e option. This simplifies use
1111 when there are many SSDTs that must be included to resolve external
1113 declarations. ACPICA BZ 1041. Example:
1114 iasl -e ssdt*.dat -d dsdt.dat
1116 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
1117 adds a portable module that implements full history and limited line
1118 editing for Unix and Linux systems. It does not use readline() due to
1119 portability issues. Instead it uses the POSIX termio interface to put the
1120 terminal in raw input mode so that the various special keys can be
1122 (such as up/down-arrow for history support and left/right-arrow for line
1123 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
1125 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
1126 one or more spaces. This provides compatible with early or different
1127 versions of the AcpiDump utility. ACPICA BZ 1044.
1129 AcpiDump: Do not ignore tables that contain only an ACPI table header.
1130 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
1131 no other data. This change adds support to dump these tables. Any tables
1132 shorter than the length of an ACPI table header remain in error (an error
1133 message is emitted). Reported by Yi Li.
1135 Debugger: Echo actual command along with the "unknown command" message.
1137 ----------------------------------------
1138 23 August 2013. Summary of changes for version 20130823:
1140 1) ACPICA kernel-resident subsystem:
1142 Implemented support for host-installed System Control Interrupt (SCI)
1143 handlers. Certain ACPI functionality requires the host to handle raw
1144 SCIs. For example, the "SCI Doorbell" that is defined for memory power
1145 state support requires the host device driver to handle SCIs to examine
1146 if the doorbell has been activated. Multiple SCI handlers can be
1147 installed to allow for future expansion. New external interfaces are
1148 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
1149 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
1151 Operation region support: Never locally free the handler "context"
1152 pointer. This change removes some dangerous code that attempts to free
1153 the handler context pointer in some (rare) circumstances. The owner of
1154 the handler owns this pointer and the ACPICA code should never touch it.
1155 Although not seen to be an issue in any kernel, it did show up as a
1156 problem (fault) under AcpiExec. Also, set the internal storage field for
1157 the context pointer to zero when the region is deactivated, simply for
1158 sanity. David Box. ACPICA BZ 1039.
1160 AcpiRead: On error, do not modify the return value target location. If an
1161 error happens in the middle of a split 32/32 64-bit I/O operation, do not
1162 modify the target of the return value pointer. Makes the code consistent
1163 with the rest of ACPICA. Bjorn Helgaas.
1165 Example Code and Data Size: These are the sizes for the OS-independent
1166 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1167 debug version of the code includes the debug output trace mechanism and
1168 has a much larger code and data size.
1171 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1172 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1174 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1175 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
1178 2) iASL Compiler/Disassembler and Tools:
1180 AcpiDump: Implemented several new features and fixed some problems:
1181 1) Added support to dump the RSDP, RSDT, and XSDT tables.
1182 2) Added support for multiple table instances (SSDT, UEFI).
1183 3) Added option to dump "customized" (overridden) tables (-c).
1184 4) Fixed a problem where some table filenames were improperly
1186 5) Improved some error messages, removed some unnecessary messages.
1188 iASL: Implemented additional support for disassembly of ACPI tables that
1189 contain invocations of external control methods. The -fe<file> option
1190 allows the import of a file that specifies the external methods along
1191 with the required number of arguments for each -- allowing for the
1192 correct disassembly of the table. This is a workaround for a limitation
1193 of AML code where the disassembler often cannot determine the number of
1194 arguments required for an external control method and generates incorrect
1195 ASL code. See the iASL reference for details. ACPICA BZ 1030.
1197 Debugger: Implemented a new command (paths) that displays the full
1198 pathnames (namepaths) and object types of all objects in the namespace.
1199 This is an alternative to the namespace command.
1201 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
1202 mechanism and any installed handlers.
1204 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
1205 This can occur if there are too many parent prefixes in a namepath (for
1206 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
1208 Application OSLs: Set the return value for the PCI read functions. These
1209 functions simply return AE_OK, but should set the return value to zero
1210 also. This change implements this. ACPICA BZ 1038.
1212 Debugger: Prevent possible command line buffer overflow. Increase the
1213 size of a couple of the debugger line buffers, and ensure that overflow
1214 cannot happen. ACPICA BZ 1037.
1216 iASL: Changed to abort immediately on serious errors during the parsing
1217 phase. Due to the nature of ASL, there is no point in attempting to
1218 compile these types of errors, and they typically end up causing a
1219 cascade of hundreds of errors which obscure the original problem.
1221 ----------------------------------------
1222 25 July 2013. Summary of changes for version 20130725:
1224 1) ACPICA kernel-resident subsystem:
1226 Fixed a problem with the DerefOf operator where references to FieldUnits
1227 and BufferFields incorrectly returned the parent object, not the actual
1228 value of the object. After this change, a dereference of a FieldUnit
1229 reference results in a read operation on the field to get the value, and
1230 likewise, the appropriate BufferField value is extracted from the target
1233 Fixed a problem where the _WAK method could cause a fault under these
1234 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
1235 method returned no value. The problem is rarely seen because most kernels
1236 run ACPICA in slack mode.
1238 For the DerefOf operator, a fatal error now results if an attempt is made
1239 to dereference a reference (created by the Index operator) to a NULL
1240 package element. Provides compatibility with other ACPI implementations,
1241 and this behavior will be added to a future version of the ACPI
1244 The ACPI Power Management Timer (defined in the FADT) is now optional.
1245 This provides compatibility with other ACPI implementations and will
1246 appear in the next version of the ACPI specification. If there is no PM
1247 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
1248 zero in the FADT indicates no PM timer.
1250 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
1251 allows the host to globally enable/disable all vendor strings, all
1252 feature strings, or both. Intended to be primarily used for debugging
1253 purposes only. Lv Zheng.
1255 Expose the collected _OSI data to the host via a global variable. This
1256 data tracks the highest level vendor ID that has been invoked by the BIOS
1257 so that the host (and potentially ACPICA itself) can change behaviors
1258 based upon the age of the BIOS.
1260 Example Code and Data Size: These are the sizes for the OS-independent
1261 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1262 debug version of the code includes the debug output trace mechanism and
1263 has a much larger code and data size.
1266 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1267 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1269 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1270 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1273 2) iASL Compiler/Disassembler and Tools:
1275 iASL: Created the following enhancements for the -so option (create
1277 1)Add offsets for the last nameseg in each namepath for every supported
1279 2)Add support for Processor, Device, Thermal Zone, and Scope objects
1280 3)Add the actual AML opcode for the parent object of every supported
1282 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
1284 Disassembler: Emit all unresolved external symbols in a single block.
1285 These are external references to control methods that could not be
1286 resolved, and thus, the disassembler had to make a guess at the number of
1289 iASL: The argument to the -T option (create table template) is now
1290 optional. If not specified, the default table is a DSDT, typically the
1293 ----------------------------------------
1294 26 June 2013. Summary of changes for version 20130626:
1296 1) ACPICA kernel-resident subsystem:
1298 Fixed an issue with runtime repair of the _CST object. Null or invalid
1299 elements were not always removed properly. Lv Zheng.
1301 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
1302 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
1303 the maximum number of GPEs is 1016. Use of multiple GPE block devices
1304 makes the system-wide number of GPEs essentially unlimited.
1306 Example Code and Data Size: These are the sizes for the OS-independent
1307 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1308 debug version of the code includes the debug output trace mechanism and
1309 has a much larger code and data size.
1312 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1313 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1315 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1316 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1319 2) iASL Compiler/Disassembler and Tools:
1321 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
1322 hosts. Now supports Linux, FreeBSD, and Windows.
1324 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
1325 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
1327 iASL/Preprocessor: Implemented full support for nested
1328 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
1330 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
1331 max. The original purpose of this constraint was to limit the amount of
1332 debug output. However, the string function in question (UtPrintString) is
1333 now used for the disassembler also, where 256 bytes is insufficient.
1334 Reported by RehabMan@GitHub.
1336 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
1337 tables. ACPICA BZ 999. Lv Zheng.
1339 iASL: Fixed a couple of error exit issues that could result in a "Could
1340 not delete <file>" message during ASL compilation.
1342 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
1343 the actual signatures for these tables are "FACP" and "APIC",
1346 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
1347 tables are allowed to have multiple instances.
1349 ----------------------------------------
1350 17 May 2013. Summary of changes for version 20130517:
1352 1) ACPICA kernel-resident subsystem:
1354 Fixed a regression introduced in version 20130328 for _INI methods. This
1355 change fixes a problem introduced in 20130328 where _INI methods are no
1356 longer executed properly because of a memory block that was not
1357 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
1358 <tomasz.nowicki@linaro.org>.
1360 Fixed a possible problem with the new extended sleep registers in the
1362 5.0 FADT. Do not use these registers (even if populated) unless the HW-
1363 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
1366 Implemented return value repair code for _CST predefined objects: Sort
1368 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
1370 Implemented a debug-only option to disable loading of SSDTs from the
1371 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
1372 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
1373 acglobal.h - ACPICA BZ 1005. Lv Zheng.
1375 Fixed some issues in the ACPICA initialization and termination code:
1376 Tomasz Nowicki <tomasz.nowicki@linaro.org>
1377 1) Clear events initialized flag upon event component termination. ACPICA
1379 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
1380 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
1381 4) Clear debug buffer global on termination to prevent possible multiple
1382 delete. ACPICA BZ 1010.
1384 Standardized all switch() blocks across the entire source base. After
1386 years, different formatting for switch() had crept in. This change makes
1387 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
1389 Split some files to enhance ACPICA modularity and configurability:
1390 1) Split buffer dump routines into utilities/utbuffer.c
1391 2) Split internal error message routines into utilities/uterror.c
1392 3) Split table print utilities into tables/tbprint.c
1393 4) Split iASL command-line option processing into asloptions.c
1395 Makefile enhancements:
1396 1) Support for all new files above.
1397 2) Abort make on errors from any subcomponent. Chao Guan.
1398 3) Add build support for Apple Mac OS X. Liang Qi.
1400 Example Code and Data Size: These are the sizes for the OS-independent
1401 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1402 debug version of the code includes the debug output trace mechanism and
1403 has a much larger code and data size.
1406 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1407 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1409 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1410 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1413 2) iASL Compiler/Disassembler and Tools:
1415 New utility: Implemented an easily portable version of the acpidump
1416 utility to extract ACPI tables from the system (or a file) in an ASCII
1418 dump format. The top-level code implements the various command line
1419 options, file I/O, and table dump routines. To port to a new host, only
1420 three functions need to be implemented to get tables -- since this
1421 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
1422 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
1423 1) The Windows version obtains the ACPI tables from the Registry.
1424 2) The Linux version is under development.
1425 3) Other hosts - If an OS-dependent module is submitted, it will be
1426 distributed with ACPICA.
1428 iASL: Fixed a regression for -D preprocessor option (define symbol). A
1429 restructuring/change to the initialization sequence caused this option to
1430 no longer work properly.
1432 iASL: Implemented a mechanism to disable specific warnings and remarks.
1433 Adds a new command line option, "-vw <messageid> as well as "#pragma
1434 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
1436 iASL: Fix for too-strict package object validation. The package object
1437 validation for return values from the predefined names is a bit too
1438 strict, it does not allow names references within the package (which will
1439 be resolved at runtime.) These types of references cannot be validated at
1440 compile time. This change ignores named references within package objects
1441 for names that return or define static packages.
1443 Debugger: Fixed the 80-character command line limitation for the History
1444 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
1446 iASL: Added control method and package support for the -so option
1447 (generates AML offset table for BIOS support.)
1449 iASL: issue a remark if a non-serialized method creates named objects. If
1450 a thread blocks within the method for any reason, and another thread
1451 enters the method, the method will fail because an attempt will be made
1453 create the same (named) object twice. In this case, issue a remark that
1454 the method should be marked serialized. NOTE: may become a warning later.
1457 ----------------------------------------
1458 18 April 2013. Summary of changes for version 20130418:
1460 1) ACPICA kernel-resident subsystem:
1462 Fixed a possible buffer overrun during some rare but specific field unit
1463 read operations. This overrun can only happen if the DSDT version is 1 --
1464 meaning that all AML integers are 32 bits -- and the field length is
1465 between 33 and 55 bits long. During the read, an internal buffer object
1467 created for the field unit because the field is larger than an integer
1469 bits). However, in this case, the buffer will be incorrectly written
1470 beyond the end because the buffer length is less than the internal
1472 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
1473 long, but a full 8 bytes will be written.
1475 Updated the Embedded Controller "orphan" _REG method support. This refers
1476 to _REG methods under the EC device that have no corresponding operation
1477 region. This is allowed by the ACPI specification. This update removes a
1478 dependency on the existence an ECDT table. It will execute an orphan _REG
1479 method as long as the operation region handler for the EC is installed at
1480 the EC device node and not the namespace root. Rui Zhang (original
1481 update), Bob Moore (update/integrate).
1483 Implemented run-time argument typechecking for all predefined ACPI names
1484 (_STA, _BIF, etc.) This change performs object typechecking on all
1485 incoming arguments for all predefined names executed via
1486 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
1487 passing correct object types as well as the correct number of arguments
1488 (therefore identifying any issues immediately). Also, the ASL/namespace
1489 definition of the predefined name is checked against the ACPI
1490 specification for the proper argument count. Adds one new file,
1493 Changed an exception code for the ASL UnLoad() operator. Changed the
1494 exception code for the case where the input DdbHandle is invalid, from
1495 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
1497 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
1498 global makefile. The use of this flag causes compiler errors on earlier
1499 versions of GCC, so it has been removed for compatibility.
1501 Miscellaneous cleanup:
1502 1) Removed some unused/obsolete macros
1503 2) Fixed a possible memory leak in the _OSI support
1504 3) Removed an unused variable in the predefined name support
1505 4) Windows OSL: remove obsolete reference to a memory list field
1507 Example Code and Data Size: These are the sizes for the OS-independent
1508 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1509 debug version of the code includes the debug output trace mechanism and
1510 has a much larger code and data size.
1513 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1514 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1516 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1517 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1520 2) iASL Compiler/Disassembler and Tools:
1522 AcpiExec: Added installation of a handler for the SystemCMOS address
1523 space. This prevents control method abort if a method accesses this
1526 AcpiExec: Added support for multiple EC devices, and now install EC
1527 operation region handler(s) at the actual EC device instead of the
1528 namespace root. This reflects the typical behavior of host operating
1531 AcpiExec: Updated to ensure that all operation region handlers are
1532 installed before the _REG methods are executed. This prevents a _REG
1533 method from aborting if it accesses an address space has no handler.
1534 AcpiExec installs a handler for every possible address space.
1536 Debugger: Enhanced the "handlers" command to display non-root handlers.
1537 This change enhances the handlers command to display handlers associated
1538 with individual devices throughout the namespace, in addition to the
1539 currently supported display of handlers associated with the root
1543 ASL Test Suite: Several test suite errors have been identified and
1544 resolved, reducing the total error count during execution. Chao Guan.
1546 ----------------------------------------
1547 28 March 2013. Summary of changes for version 20130328:
1549 1) ACPICA kernel-resident subsystem:
1551 Fixed several possible race conditions with the internal object reference
1552 counting mechanism. Some of the external ACPICA interfaces update object
1553 reference counts without holding the interpreter or namespace lock. This
1554 change adds a spinlock to protect reference count updates on the internal
1555 ACPICA objects. Reported by and with assistance from Andriy Gapon
1558 FADT support: Removed an extraneous warning for very large GPE register
1559 sets. This change removes a size mismatch warning if the legacy length
1560 field for a GPE register set is larger than the 64-bit GAS structure can
1561 accommodate. GPE register sets can be larger than the 255-bit width
1562 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1564 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1565 return from this interface. Handles a possible timeout case if
1566 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1567 "forever". Jung-uk Kim.
1569 Predefined name support: Add allowed/required argument type information
1571 the master predefined info table. This change adds the infrastructure to
1572 enable typechecking on incoming arguments for all predefined
1573 methods/objects. It does not actually contain the code that will fully
1574 utilize this information, this is still under development. Also condenses
1575 some duplicate code for the predefined names into a new module,
1576 utilities/utpredef.c
1578 Example Code and Data Size: These are the sizes for the OS-independent
1579 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1580 debug version of the code includes the debug output trace mechanism and
1581 has a much larger code and data size.
1584 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1585 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1587 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1588 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1591 2) iASL Compiler/Disassembler and Tools:
1593 iASL: Implemented a new option to simplify the development of ACPI-
1595 BIOS code. Adds support for a new "offset table" output file. The -so
1596 option will create a C table containing the AML table offsets of various
1597 named objects in the namespace so that BIOS code can modify them easily
1599 boot time. This can simplify BIOS runtime code by eliminating expensive
1600 searches for "magic values", enhancing boot times and adding greater
1601 reliability. With assistance from Lee Hamel.
1603 iASL: Allow additional predefined names to return zero-length packages.
1604 Now, all predefined names that are defined by the ACPI specification to
1605 return a "variable-length package of packages" are allowed to return a
1606 zero length top-level package. This allows the BIOS to tell the host that
1607 the requested feature is not supported, and supports existing BIOS/ASL
1610 iASL: Changed the "result not used" warning to an error. This is the case
1611 where an ASL operator is effectively a NOOP because the result of the
1612 operation is not stored anywhere. For example:
1614 There is no target (missing 3rd argument), nor is the function return
1615 value used. This is potentially a very serious problem -- since the code
1616 was probably intended to do something, but for whatever reason, the value
1617 was not stored. Therefore, this issue has been upgraded from a warning to
1620 AcpiHelp: Added allowable/required argument types to the predefined names
1621 info display. This feature utilizes the recent update to the predefined
1622 names table (above).
1624 ----------------------------------------
1625 14 February 2013. Summary of changes for version 20130214:
1627 1) ACPICA Kernel-resident Subsystem:
1629 Fixed a possible regression on some hosts: Reinstated the safe return
1630 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1631 evaluated only once. Although these macros are not needed for the ACPICA
1632 code itself, they are often used by ACPI-related host device drivers
1634 the safe feature may be necessary.
1636 Fixed several issues related to the ACPI 5.0 reduced hardware support
1637 (SOC): Now ensure that if the platform declares itself as hardware-
1639 via the FADT, the following functions become NOOPs (and always return
1640 AE_OK) because ACPI is always enabled by definition on these machines:
1646 Dynamic Object Repair: Implemented additional runtime repairs for
1647 predefined name return values. Both of these repairs can simplify code in
1648 the related device drivers that invoke these methods:
1649 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1650 string to a Unicode buffer.
1651 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1653 lone end tag descriptor in the following cases: A Return(0) was executed,
1654 a null buffer was returned, or no object at all was returned (non-slack
1655 mode only). Adds a new file, nsconvert.c
1656 ACPICA BZ 998. Bob Moore, Lv Zheng.
1658 Resource Manager: Added additional code to prevent possible infinite
1660 while traversing corrupted or ill-formed resource template buffers. Check
1661 for zero-length resource descriptors in all code that loops through
1662 resource templates (the length field is used to index through the
1663 template). This change also hardens the external AcpiWalkResources and
1664 AcpiWalkResourceBuffer interfaces.
1666 Local Cache Manager: Enhanced the main data structure to eliminate an
1667 unnecessary mechanism to access the next object in the list. Actually
1668 provides a small performance enhancement for hosts that use the local
1669 ACPICA cache manager. Jung-uk Kim.
1671 Example Code and Data Size: These are the sizes for the OS-independent
1672 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1673 debug version of the code includes the debug output trace mechanism and
1674 has a much larger code and data size.
1677 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1678 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1680 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1681 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1684 2) iASL Compiler/Disassembler and Tools:
1686 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1687 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1688 that were made to the ACPI 5.0 specification.
1690 iASL/Disassembler: Added full support for the following new ACPI tables:
1691 1) The MTMR table (MID Timer Table)
1692 2) The VRTC table (Virtual Real Time Clock Table).
1693 Includes header file, disassembler, table compiler, and template support
1696 iASL: Implemented compile-time validation of package objects returned by
1697 predefined names. This new feature validates static package objects
1698 returned by the various predefined names defined to return packages. Both
1699 object types and package lengths are validated, for both parent packages
1700 and sub-packages, if any. The code is similar in structure and behavior
1702 the runtime repair mechanism within the AML interpreter and uses the
1703 existing predefined name information table. Adds a new file, aslprepkg.c.
1706 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1707 This feature detects a binary file with a valid ACPI table header and
1708 invokes the disassembler automatically. Eliminates the need to
1709 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1711 iASL/Disassembler: Added several warnings for the case where there are
1712 unresolved control methods during the disassembly. This can potentially
1713 cause errors when the output file is compiled, because the disassembler
1714 assumes zero method arguments in these cases (it cannot determine the
1715 actual number of arguments without resolution/definition of the method).
1717 Debugger: Added support to display all resources with a single command.
1718 Invocation of the resources command with no arguments will now display
1720 resources within the current namespace.
1722 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1725 ----------------------------------------
1726 17 January 2013. Summary of changes for version 20130117:
1728 1) ACPICA Kernel-resident Subsystem:
1730 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1731 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1732 objects to return a package containing one integer, most BIOS code
1734 two integers and the previous code reflects that. However, we also need
1736 support BIOS code that actually implements to the ACPI spec, and this
1737 change reflects this.
1739 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1740 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1741 C compilers that require this support.
1742 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1743 ACPI_DEBUG is already used by many of the various hosts.
1745 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1746 copyright to all module headers and signons, including the standard Linux
1747 header. This affects virtually every file in the ACPICA core subsystem,
1748 iASL compiler, all ACPICA utilities, and the test suites.
1750 Example Code and Data Size: These are the sizes for the OS-independent
1751 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1752 debug version of the code includes the debug output trace mechanism and
1753 has a much larger code and data size.
1756 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1757 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1759 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1760 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1763 2) iASL Compiler/Disassembler and Tools:
1765 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1766 prevent a possible fault on some hosts. Some C libraries modify the arg
1767 pointer parameter to vfprintf making it difficult to call it twice in the
1768 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1769 does not affect the Windows OSL since the Win C library does not modify
1770 the arg pointer. Chao Guan, Bob Moore.
1772 iASL: Fixed a possible infinite loop when the maximum error count is
1773 reached. If an output file other than the .AML file is specified (such as
1774 a listing file), and the maximum number of errors is reached, do not
1775 attempt to flush data to the output file(s) as the compiler is aborting.
1776 This can cause an infinite loop as the max error count code essentially
1777 keeps calling itself.
1779 iASL/Disassembler: Added an option (-in) to ignore NOOP
1781 Implemented for both the compiler and the disassembler. Often, the NOOP
1782 opcode is used as padding for packages that are changed dynamically by
1784 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1785 errors. This option causes the disassembler to ignore all NOOP opcodes
1786 (0xA3), and it also causes the compiler to ignore all ASL source code
1790 Debugger: Enhanced the Sleep command to execute all sleep states. This
1791 change allows Sleep to be invoked with no arguments and causes the
1792 debugger to execute all of the sleep states, 0-5, automatically.
1794 ----------------------------------------
1795 20 December 2012. Summary of changes for version 20121220:
1797 1) ACPICA Kernel-resident Subsystem:
1799 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1800 alternate entry point for AcpiWalkResources and improves the usability of
1801 the resource manager by accepting as input a buffer containing the output
1802 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1803 input buffer is not deleted by this interface so that it can be used by
1804 the host later. See the ACPICA reference for details.
1806 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1807 (DSDT version < 2). The constant will be truncated and this warning
1808 reflects that behavior.
1810 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1811 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1812 both get and set the new wake bit in these descriptors, separately from
1813 the existing share bit. Reported by Aaron Lu.
1815 Interpreter: Fix Store() when an implicit conversion is not possible. For
1816 example, in the cases such as a store of a string to an existing package
1817 object, implement the store as a CopyObject(). This is a small departure
1818 from the ACPI specification which states that the control method should
1820 aborted in this case. However, the ASLTS suite depends on this behavior.
1822 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1823 macros: check if debug output is currently enabled as soon as possible to
1824 minimize performance impact if debug is in fact not enabled.
1826 Source code restructuring: Cleanup to improve modularity. The following
1827 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1828 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1829 Associated makefiles and project files have been updated.
1831 Changed an exception code for LoadTable operator. For the case where one
1832 of the input strings is too long, change the returned exception code from
1833 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1835 Fixed a possible memory leak in dispatcher error path. On error, delete
1836 the mutex object created during method mutex creation. Reported by
1837 tim.gardner@canonical.com.
1839 Example Code and Data Size: These are the sizes for the OS-independent
1840 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1841 debug version of the code includes the debug output trace mechanism and
1842 has a much larger code and data size.
1845 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1846 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1848 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1849 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1852 2) iASL Compiler/Disassembler and Tools:
1854 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1855 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1856 will not allow the interpreter to differentiate between a method and a
1857 method invocation when these are used as an argument to the ObjectType
1858 operator. The ACPI specification change is to disallow a method
1860 (UserTerm) for the ObjectType operator.
1862 Finish support for the TPM2 and CSRT tables in the headers, table
1863 compiler, and disassembler.
1865 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1866 always expires immediately if the semaphore is not available. The
1868 code was using a relative-time timeout, but sem_timedwait requires the
1870 of an absolute time.
1872 iASL: Added a remark if the Timer() operator is used within a 32-bit
1873 table. This operator returns a 64-bit time value that will be truncated
1874 within a 32-bit table.
1876 iASL Source code restructuring: Cleanup to improve modularity. The
1877 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
1878 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
1882 ----------------------------------------
1883 14 November 2012. Summary of changes for version 20121114:
1885 1) ACPICA Kernel-resident Subsystem:
1887 Implemented a performance enhancement for ACPI/AML Package objects. This
1888 change greatly increases the performance of Package objects within the
1889 interpreter. It changes the processing of reference counts for packages
1891 optimizing for the most common case where the package sub-objects are
1892 either Integers, Strings, or Buffers. Increases the overall performance
1894 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
1896 Chao Guan. ACPICA BZ 943.
1898 Implemented and deployed common macros to extract flag bits from resource
1899 descriptors. Improves readability and maintainability of the code. Fixes
1901 problem with the UART serial bus descriptor for the number of data bits
1902 flags (was incorrectly 2 bits, should be 3).
1904 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
1905 of the macros and changed the SETx macros to the style of (destination,
1906 source). Also added ACPI_CASTx companion macros. Lv Zheng.
1908 Example Code and Data Size: These are the sizes for the OS-independent
1909 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1910 debug version of the code includes the debug output trace mechanism and
1911 has a much larger code and data size.
1914 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
1915 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1917 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1918 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1921 2) iASL Compiler/Disassembler and Tools:
1923 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
1924 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
1925 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
1927 Disassembler: Fixed a problem with external declaration generation. Fixes
1928 a problem where an incorrect pathname could be generated for an external
1929 declaration if the original reference to the object includes leading
1930 carats (^). ACPICA BZ 984.
1932 Debugger: Completed a major update for the Disassemble<method> command.
1933 This command was out-of-date and did not properly disassemble control
1934 methods that had any reasonable complexity. This fix brings the command
1936 to the same level as the rest of the disassembler. Adds one new file,
1937 dmdeferred.c, which is existing code that is now common with the main
1938 disassembler and the debugger disassemble command. ACPICA MZ 978.
1940 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
1941 Newer versions of Bison emit this prototype, so moved the prototype out
1943 the iASL header to where it is actually used in order to avoid a
1947 iASL/Tools: Standardized use of the stream I/O functions:
1948 1) Ensure check for I/O error after every fopen/fread/fwrite
1949 2) Ensure proper order of size/count arguments for fread/fwrite
1950 3) Use test of (Actual != Requested) after all fwrite, and most fread
1951 4) Standardize I/O error messages
1952 Improves reliability and maintainability of the code. Bob Moore, Lv
1956 Disassembler: Prevent duplicate External() statements. During generation
1957 of external statements, detect similar pathnames that are actually
1958 duplicates such as these:
1961 Remove all leading '\' characters from pathnames during the external
1962 statement generation so that duplicates will be detected and tossed.
1965 Tools: Replace low-level I/O with stream I/O functions. Replace
1966 open/read/write/close with the stream I/O equivalents
1967 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
1970 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
1971 name header so that AcpiXtract recognizes the output file/table.
1973 iASL: Remove obsolete -2 option flag. Originally intended to force the
1974 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
1975 and the entire concept is now obsolete.
1977 ----------------------------------------
1978 18 October 2012. Summary of changes for version 20121018:
1981 1) ACPICA Kernel-resident Subsystem:
1983 Updated support for the ACPI 5.0 MPST table. Fixes some problems
1984 introduced by late changes to the table as it was added to the ACPI 5.0
1985 specification. Includes header, disassembler, and data table compiler
1986 support as well as a new version of the MPST template.
1988 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
1989 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
1990 methods: _HID, _CID, and _UID.
1992 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
1993 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
1994 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
1995 names for their various drivers. Affects the AcpiGetObjectInfo external
1996 interface, and other internal interfaces as well.
1998 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
1999 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
2000 on machines that support non-aligned transfers. Optimizes for this case
2001 rather than using a strncpy. With assistance from Zheng Lv.
2003 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
2004 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
2006 Added a new debug print message for AML mutex objects that are force-
2007 released. At control method termination, any currently acquired mutex
2008 objects are force-released. Adds a new debug-only message for each one
2011 Audited/updated all ACPICA return macros and the function debug depth
2012 counter: 1) Ensure that all functions that use the various TRACE macros
2013 also use the appropriate ACPICA return macros. 2) Ensure that all normal
2014 return statements surround the return expression (value) with parens to
2015 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
2016 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
2018 Global source code changes/maintenance: All extra lines at the start and
2019 end of each source file have been removed for consistency. Also, within
2020 comments, all new sentences start with a single space instead of a double
2021 space, again for consistency across the code base.
2023 Example Code and Data Size: These are the sizes for the OS-independent
2024 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2025 debug version of the code includes the debug output trace mechanism and
2026 has a much larger code and data size.
2029 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2030 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2032 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2033 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2036 2) iASL Compiler/Disassembler and Tools:
2038 AcpiExec: Improved the algorithm used for memory leak/corruption
2039 detection. Added some intelligence to the code that maintains the global
2040 list of allocated memory. The list is now ordered by allocated memory
2041 address, significantly improving performance. When running AcpiExec on
2042 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
2043 on the platform and/or the environment. Note, this performance
2044 enhancement affects the AcpiExec utility only, not the kernel-resident
2047 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
2048 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
2049 incorrect table offset reported for invalid opcodes. Report the original
2050 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
2052 Disassembler: Enhanced the -vt option to emit the binary table data in
2053 hex format to assist with debugging.
2055 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
2056 size of file structure. Colin Ian King.
2058 ----------------------------------------
2059 13 September 2012. Summary of changes for version 20120913:
2062 1) ACPICA Kernel-resident Subsystem:
2064 ACPI 5.0: Added two new notify types for the Hardware Error Notification
2065 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
2069 Table Manager: Merged/removed duplicate code in the root table resize
2070 functions. One function is external, the other is internal. Lv Zheng,
2074 Makefiles: Completely removed the obsolete "Linux" makefiles under
2075 acpica/generate/linux. These makefiles are obsolete and have been
2078 the generic unix makefiles under acpica/generate/unix.
2080 Makefiles: Ensure that binary files always copied properly. Minor rule
2082 to ensure that the final binary output files are always copied up to the
2083 appropriate binary directory (bin32 or bin64.)
2085 Example Code and Data Size: These are the sizes for the OS-independent
2086 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2088 version of the code includes the debug output trace mechanism and has a
2090 larger code and data size.
2093 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2094 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2096 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2097 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2100 2) iASL Compiler/Disassembler and Tools:
2102 Disassembler: Fixed a possible fault during the disassembly of resource
2103 descriptors when a second parse is required because of the invocation of
2104 external control methods within the table. With assistance from
2105 adq@lidskialf.net. ACPICA BZ 976.
2107 iASL: Fixed a namepath optimization problem. An error can occur if the
2109 node that contains the namepath to be optimized does not have a parent
2111 that is a named object. This change fixes the problem.
2113 iASL: Fixed a regression where the AML file is not deleted on errors. The
2115 output file should be deleted if there are any errors during the
2118 only exception is if the -f (force output) option is used. ACPICA BZ 974.
2120 iASL: Added a feature to automatically increase internal line buffer
2122 Via realloc(), automatically increase the internal line buffer sizes as
2123 necessary to support very long source code lines. The current version of
2125 preprocessor requires a buffer long enough to contain full source code
2127 This change increases the line buffer(s) if the input lines go beyond the
2128 current buffer size. This eliminates errors that occurred when a source
2130 line was longer than the buffer.
2132 iASL: Fixed a problem with constant folding in method declarations. The
2133 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
2135 Type3 opcode was used.
2137 Debugger: Improved command help support. For incorrect argument count,
2139 full help for the command. For help command itself, allow an argument to
2142 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
2143 errors during execution of the suite. Guan Chao.
2145 ----------------------------------------
2146 16 August 2012. Summary of changes for version 20120816:
2149 1) ACPICA Kernel-resident Subsystem:
2151 Removed all use of the deprecated _GTS and _BFS predefined methods. The
2153 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
2154 deprecated and will probably be removed from the ACPI specification.
2156 does not invoke them, and reportedly never will. The final nail in the
2158 is that the ACPI specification states that these methods must be run with
2159 interrupts off, which is not going to happen in a kernel interpreter.
2161 Linux has removed all use of the methods also. It was discovered that
2162 invoking these functions caused failures on some machines, probably
2164 they were never tested since Windows does not call them. Affects two
2166 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
2169 Implemented support for complex bit-packed buffers returned from the _PLD
2170 (Physical Location of Device) predefined method. Adds a new external
2171 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
2173 structure. Note: C Bitfields cannot be used for this type of predefined
2174 structure since the memory layout of individual bitfields is not defined
2176 the C language. In addition, there are endian concerns where a compiler
2178 change the bitfield ordering based on the machine type. The new ACPICA
2179 interface eliminates these issues, and should be called after _PLD is
2180 executed. ACPICA BZ 954.
2182 Implemented a change to allow a scope change to root (via "Scope (\)")
2184 execution of module-level ASL code (code that is executed at table load
2187 Added the Windows8/Server2012 string for the _OSI method. This change
2190 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
2193 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
2195 and CSRT (Core System Resource Table).
2197 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
2198 names. This simplifies access to the buffers returned by these predefined
2199 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
2201 GPE support: Removed an extraneous parameter from the various low-level
2202 internal GPE functions. Tang Feng.
2204 Removed the linux makefiles from the unix packages. The generate/linux
2205 makefiles are obsolete and have been removed from the unix tarball
2207 packages. The replacement makefiles are under generate/unix, and there is
2209 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
2211 Updates for Unix makefiles:
2212 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
2213 2) Update linker flags (move to end of command line) for AcpiExec
2217 Split ACPICA initialization functions to new file, utxfinit.c. Split from
2218 utxface.c to improve modularity and reduce file size.
2220 Example Code and Data Size: These are the sizes for the OS-independent
2221 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2222 debug version of the code includes the debug output trace mechanism and
2224 much larger code and data size.
2227 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2228 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2230 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2231 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2234 2) iASL Compiler/Disassembler and Tools:
2236 iASL: Fixed a problem with constant folding for fixed-length constant
2237 expressions. The constant-folding code was not being invoked for constant
2238 expressions that allow the use of type 3/4/5 opcodes to generate
2240 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
2242 in the generation of invalid AML bytecode. ACPICA BZ 970.
2244 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
2245 apparently automatically emit some of the necessary externals. This
2247 handles these versions in order to eliminate generation warnings.
2249 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
2251 Disassembler: Add support to decode _PLD buffers. The decoded buffer
2253 within comments in the output file.
2255 Debugger: Fixed a regression with the "Threads" command where
2256 AE_BAD_PARAMETER was always returned.
2258 ----------------------------------------
2259 11 July 2012. Summary of changes for version 20120711:
2261 1) ACPICA Kernel-resident Subsystem:
2263 Fixed a possible fault in the return package object repair code. Fixes a
2264 problem that can occur when a lone package object is wrapped with an
2266 package object in order to force conformance to the ACPI specification.
2268 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
2272 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
2273 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
2274 ARB_DIS bit must be implemented in the host-dependent C3 processor power
2276 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
2278 Intel and other vendors. (for Intel: ICH4-M and earlier)
2280 This change removes the code to disable/enable bus master arbitration
2282 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
2284 resume problems on some machines. The change has been in use for over
2288 Implemented two new external interfaces to support host-directed dynamic
2290 table load and unload. They are intended to simplify the host
2292 of hot-plug support:
2293 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
2294 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
2296 See the ACPICA reference for additional details. Adds one new file,
2297 components/tables/tbxfload.c
2299 Implemented and deployed two new interfaces for errors and warnings that
2301 known to be caused by BIOS/firmware issues:
2302 AcpiBiosError: Prints "ACPI Firmware Error" message.
2303 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
2304 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
2306 and FADT errors. Additional deployment to be completed as appropriate in
2308 future. The associated conditional macros are ACPI_BIOS_ERROR and
2309 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
2314 Implicit notify support: ensure that no memory allocation occurs within a
2315 critical region. This fix moves a memory allocation outside of the time
2317 spinlock is held. Fixes issues on systems that do not allow this
2321 Split exception code utilities and tables into a new file,
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: 93.1K Code, 25.1K Data, 118.2K Total
2333 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2335 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2336 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2339 2) iASL Compiler/Disassembler and Tools:
2341 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
2345 Debugger: Enhanced the "tables" command to emit additional information
2347 the current set of ACPI tables, including the owner ID and flags decode.
2349 Debugger: Reimplemented the "unload" command to use the new
2350 AcpiUnloadParentTable external interface. This command was disable
2352 due to need for an unload interface.
2354 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
2356 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
2358 ----------------------------------------
2359 20 June 2012. Summary of changes for version 20120620:
2362 1) ACPICA Kernel-resident Subsystem:
2364 Implemented support to expand the "implicit notify" feature to allow
2366 devices to be notified by a single GPE. This feature automatically
2368 runtime device notification in the absence of a BIOS-provided GPE control
2369 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
2371 provided by ACPICA for Windows compatibility, and is a workaround for
2374 code errors. See the description of the AcpiSetupGpeForWake interface in
2376 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
2378 Changed some comments and internal function names to simplify and ensure
2379 correctness of the Linux code translation. No functional changes.
2381 Example Code and Data Size: These are the sizes for the OS-independent
2382 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2384 version of the code includes the debug output trace mechanism and has a
2386 larger code and data size.
2389 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2390 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2392 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2393 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2396 2) iASL Compiler/Disassembler and Tools:
2398 Disassembler: Added support to emit short, commented descriptions for the
2400 predefined names in order to improve the readability of the disassembled
2401 output. ACPICA BZ 959. Changes include:
2402 1) Emit descriptions for all standard predefined names (_INI, _STA,
2405 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
2406 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
2409 AcpiSrc: Fixed several long-standing Linux code translation issues.
2411 descriptions in function headers are now translated properly to lower
2414 underscores. ACPICA BZ 961. Also fixes translation problems such as
2420 local_fADT -> local_FADT
2421 execute_oSI -> execute_OSI
2423 iASL: Fixed a problem where null bytes were inadvertently emitted into
2427 iASL: Added the existing debug options to the standard help screen. There
2429 no longer two different help screens. ACPICA BZ 957.
2431 AcpiHelp: Fixed some typos in the various predefined name descriptions.
2433 expand some of the descriptions where appropriate.
2435 iASL: Fixed the -ot option (display compile times/statistics). Was not
2437 properly for standard output; only worked for the debug file case.
2439 ----------------------------------------
2440 18 May 2012. Summary of changes for version 20120518:
2443 1) ACPICA Core Subsystem:
2445 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
2447 to block until asynchronous events such as notifies and GPEs have
2449 Within ACPICA, it is only called before a notify or GPE handler is
2450 removed/uninstalled. It also may be useful for the host OS within related
2451 drivers such as the Embedded Controller driver. See the ACPICA reference
2453 additional information. ACPICA BZ 868.
2455 ACPI Tables: Added a new error message for a possible overflow failure
2457 the conversion of FADT 32-bit legacy register addresses to internal
2460 bit GAS structure representation. The GAS has a one-byte "bit length"
2462 thus limiting the register length to 255 bits. ACPICA BZ 953.
2464 Example Code and Data Size: These are the sizes for the OS-independent
2465 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2467 version of the code includes the debug output trace mechanism and has a
2469 larger code and data size.
2472 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2473 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2475 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2476 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2479 2) iASL Compiler/Disassembler and Tools:
2481 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
2483 This keyword was added late in the ACPI 5.0 release cycle and was not
2484 implemented until now.
2486 Disassembler: Added support for Operation Region externals. Adds missing
2487 support for operation regions that are defined in another table, and
2488 referenced locally via a Field or BankField ASL operator. Now generates
2490 correct External statement.
2492 Disassembler: Several additional fixes for the External() statement
2494 related to some ASL operators. Also, order the External() statements
2495 alphabetically in the disassembler output. Fixes the External()
2498 the Create* field, Alias, and Scope operators:
2499 1) Create* buffer field operators - fix type mismatch warning on
2501 2) Alias - implement missing External support
2502 3) Scope - fix to make sure all necessary externals are emitted.
2504 iASL: Improved pathname support. For include files, merge the prefix
2506 with the file pathname and eliminate unnecessary components. Convert
2507 backslashes in all pathnames to forward slashes, for readability. Include
2509 pathname changes affect both #include and Include() type operators.
2511 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
2513 of a valid line by inserting a newline and then returning the EOF during
2515 next call to GetNextLine. Prevents the line from being ignored due to EOF
2518 iASL: Implemented some changes to enhance the IDE support (-vi option.)
2520 and Warning messages are now correctly recognized for both the source
2522 browser and the global error and warning counts.
2524 ----------------------------------------
2525 20 April 2012. Summary of changes for version 20120420:
2528 1) ACPICA Core Subsystem:
2530 Implemented support for multiple notify handlers. This change adds
2533 allow multiple system and device notify handlers on Device, Thermal Zone,
2535 Processor objects. This can simplify the host OS notification
2537 Also re-worked and restructured the entire notify support code to
2539 handler installation, handler removal, notify event queuing, and notify
2540 dispatch to handler(s). Note: there can still only be two global notify
2541 handlers - one for system notifies and one for device notifies. There are
2543 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2544 Moore, Rafael Wysocki.
2546 Fixed a regression in the package repair code where the object reference
2547 count was calculated incorrectly. Regression was introduced in the commit
2548 "Support to add Package wrappers".
2550 Fixed a couple possible memory leaks in the AML parser, in the error
2552 path. Jesper Juhl, Lin Ming.
2554 Example Code and Data Size: These are the sizes for the OS-independent
2555 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2556 debug version of the code includes the debug output trace mechanism and
2558 much larger code and data size.
2561 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2562 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2564 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2565 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2568 2) iASL Compiler/Disassembler and Tools:
2570 iASL: Fixed a problem with the resource descriptor support where the
2572 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2573 included in cumulative descriptor offset, resulting in incorrect values
2575 resource tags within resource descriptors appearing after a
2577 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2579 iASL and Preprocessor: Implemented full support for the #line directive
2581 correctly track original source file line numbers through the .i
2583 output file - for error and warning messages.
2585 iASL: Expand the allowable byte constants for address space IDs.
2587 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2588 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2590 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2592 iASL: Add option to completely disable the preprocessor (-Pn).
2594 iASL: Now emit all error/warning messages to standard error (stderr) by
2595 default (instead of the previous stdout).
2597 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2599 for resource descriptor offset fix above. Update/cleanup error output
2600 routines. Enable and send iASL errors/warnings to an error logfile
2601 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2603 several extraneous "unrecognized operator" messages.
2605 ----------------------------------------
2606 20 March 2012. Summary of changes for version 20120320:
2609 1) ACPICA Core Subsystem:
2611 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2612 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2614 does not execute these methods, and therefore these methods are often
2615 untested. It has been seen on some systems where the execution of these
2616 methods causes errors and also prevents the machine from entering S5. It
2618 therefore suggested that host operating systems do not execute these
2620 by default. In the future, perhaps these methods can be optionally
2622 based on the age of the system and/or what is the newest version of
2624 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2626 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2629 Fixed a problem where the length of the local/common FADT was set too
2631 The local FADT table length cannot be set to the common length until the
2632 original length has been examined. There is code that checks the table
2634 and sets various fields appropriately. This can affect older machines
2636 early FADT versions. For example, this can cause inadvertent writes to
2638 CST_CNT register. Julian Anastasov.
2640 Fixed a mapping issue related to a physical table override. Use the
2642 mapping mechanism for tables loaded via the physical override OSL
2644 This allows for early mapping before the virtual memory manager is
2646 Thomas Renninger, Bob Moore.
2648 Enhanced the automatic return-object repair code: Repair a common problem
2650 predefined methods that are defined to return a variable-length Package
2652 sub-objects. If there is only one sub-object, some BIOS ASL code
2654 simply returns the single object instead of a Package with one sub-
2656 This new support will repair this error by wrapping a Package object
2658 the original object, creating the correct and expected Package with one
2660 object. Names that can be repaired in this manner include: _ALR, _CSD,
2662 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2665 Changed the exception code returned for invalid ACPI paths passed as
2666 parameters to external interfaces such as AcpiEvaluateObject. Was
2667 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2669 Example Code and Data Size: These are the sizes for the OS-independent
2670 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2672 version of the code includes the debug output trace mechanism and has a
2674 larger code and data size.
2677 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2678 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2680 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2681 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2684 2) iASL Compiler/Disassembler and Tools:
2686 iASL: Added the infrastructure and initial implementation of a integrated
2688 like preprocessor. This will simplify BIOS development process by
2690 the need for a separate preprocessing step during builds. On Windows, it
2692 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2693 features including full #define() macro support are still under
2695 These preprocessor directives are supported:
2708 In addition, these new command line options are supported:
2709 -D <symbol> Define symbol for preprocessor use
2710 -li Create preprocessed output file (*.i)
2711 -P Preprocess only and create preprocessor output file (*.i)
2713 Table Compiler: Fixed a problem where the equals operator within an
2715 did not work properly.
2717 Updated iASL to use the current versions of Bison/Flex. Updated the
2719 project file to invoke these tools from the standard location. ACPICA BZ
2722 Flex for Windows: V2.5.4
2723 Bison for Windows: V2.4.1
2725 ----------------------------------------
2726 15 February 2012. Summary of changes for version 20120215:
2729 1) ACPICA Core Subsystem:
2731 There have been some major changes to the sleep/wake support code, as
2732 described below (a - e).
2734 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2735 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2736 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2738 time the _BFS method is called and the _WAK method is called. NOTE: all
2740 must update their wake/resume code or else sleep/wake will not work
2744 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2746 method. Some machines require that the GPEs are enabled before the _WAK
2748 is executed. Thomas Renninger.
2750 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2752 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2754 determine whether the system is rebooting or resuming. Matthew Garrett.
2756 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2758 match the ACPI specification requirement. Rafael Wysocki.
2760 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2761 registers within the V5 FADT. This support adds two new files:
2762 hardware/hwesleep.c implements the support for the new registers. Moved
2764 sleep/wake external interfaces to hardware/hwxfsleep.c.
2767 Added a new OSL interface for ACPI table overrides,
2768 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2769 table via a physical address, instead of the logical address required by
2770 AcpiOsTableOverride. This simplifies the host implementation. Initial
2771 implementation by Thomas Renninger. The ACPICA implementation creates a
2773 shared function for table overrides that attempts both a logical and a
2776 Expanded the OSL memory read/write interfaces to 64-bit data
2777 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2778 transfer support for GAS register structures passed to AcpiRead and
2781 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2783 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2785 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2787 10% of the code and 5% of the static data, and the following hardware
2789 features become unavailable:
2790 PM Event and Control registers
2791 SCI interrupt (and handler)
2793 General Purpose Events (GPEs)
2796 FACS table (Waking vectors and Global Lock)
2798 Updated the unix tarball directory structure to match the ACPICA git
2800 tree. This ensures that the generic unix makefiles work properly (in
2801 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2804 Updated the return value of the _REV predefined method to integer value 5
2806 reflect ACPI 5.0 support.
2808 Moved the external ACPI PM timer interface prototypes to the public
2810 file where they belong.
2812 Example Code and Data Size: These are the sizes for the OS-independent
2813 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2815 version of the code includes the debug output trace mechanism and has a
2817 larger code and data size.
2820 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2821 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2823 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2824 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2827 2) iASL Compiler/Disassembler and Tools:
2829 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2830 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2831 incorrectly displayed.
2833 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2836 ----------------------------------------
2837 11 January 2012. Summary of changes for version 20120111:
2840 1) ACPICA Core Subsystem:
2842 Implemented a new mechanism to allow host device drivers to check for
2844 range conflicts with ACPI Operation Regions. Both SystemMemory and
2846 address spaces are supported. A new external interface,
2847 AcpiCheckAddressRange,
2848 allows drivers to check an address range against the ACPI namespace. See
2850 ACPICA reference for additional details. Adds one new file,
2851 utilities/utaddress.c. Lin Ming, Bob Moore.
2853 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2856 Status registers, update the ACPI 5.0 flags, and update internal data
2857 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2861 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2863 all module headers and signons, including the standard Linux header. This
2864 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2866 all ACPICA utilities.
2868 Example Code and Data Size: These are the sizes for the OS-independent
2869 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2871 version of the code includes the debug output trace mechanism and has a
2873 larger code and data size.
2876 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
2877 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
2879 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2880 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2883 2) iASL Compiler/Disassembler and Tools:
2885 Disassembler: fixed a problem with the automatic resource tag generation
2886 support. Fixes a problem where the resource tags are inadvertently not
2887 constructed if the table being disassembled contains external references
2889 control methods. Moved the actual construction of the tags to after the
2891 namespace is constructed (after 2nd parse is invoked due to external
2893 method references.) ACPICA BZ 941.
2895 Table Compiler: Make all "generic" operators caseless. These are the
2897 like UINT8, String, etc. Making these caseless improves ease-of-use.
2901 ----------------------------------------
2902 23 November 2011. Summary of changes for version 20111123:
2904 0) ACPI 5.0 Support:
2906 This release contains full support for the ACPI 5.0 specification, as
2909 Reduced Hardware Support:
2910 -------------------------
2912 This support allows for ACPI systems without the usual ACPI hardware.
2914 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
2916 not attempt to initialize or use any of the usual ACPI hardware. Note,
2918 this flag is set, all of the following ACPI hardware is assumed to be not
2919 present and is not initialized or accessed:
2921 General Purpose Events (GPEs)
2922 Fixed Events (PM1a/PM1b and PM Control)
2923 Power Management Timer and Console Buttons (power/sleep)
2924 Real-time Clock Alarm
2926 System Control Interrupt (SCI)
2927 The FACS is assumed to be non-existent
2932 All new tables and updates to existing tables are fully supported in the
2933 ACPICA headers (for use by device drivers), the disassembler, and the
2935 Data Table Compiler. ACPI 5.0 defines these new tables:
2937 BGRT /* Boot Graphics Resource Table */
2938 DRTM /* Dynamic Root of Trust for Measurement table */
2939 FPDT /* Firmware Performance Data Table */
2940 GTDT /* Generic Timer Description Table */
2941 MPST /* Memory Power State Table */
2942 PCCT /* Platform Communications Channel Table */
2943 PMTT /* Platform Memory Topology Table */
2944 RASF /* RAS Feature table */
2946 Operation Regions/SpaceIDs:
2947 ---------------------------
2949 All new operation regions are fully supported by the iASL compiler, the
2950 disassembler, and the ACPICA runtime code (for dispatch to region
2952 The new operation region Space IDs are:
2957 Resource Descriptors:
2958 ---------------------
2960 All new ASL resource descriptors are fully supported by the iASL
2963 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
2965 all new predefined resource tags). New descriptors are:
2974 ASL/AML Operators, New and Modified:
2975 ------------------------------------
2977 One new operator is added, the Connection operator, which is used to
2979 a GeneralPurposeIo or GenericSerialBus resource descriptor with
2981 field objects within an operation region. Several new protocols are
2983 with the AccessAs operator. All are fully supported by the iASL compiler,
2984 disassembler, and runtime ACPICA AML interpreter:
2986 Connection // Declare Field Connection
2988 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
2989 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
2991 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
2992 RawDataBuffer // Data type for Vendor Data
2995 Predefined ASL/AML Objects:
2996 ---------------------------
2998 All new predefined objects/control-methods are supported by the iASL
3000 and the ACPICA runtime validation/repair (arguments and return values.)
3002 predefined names include the following:
3004 Standard Predefined Names (Objects or Control Methods):
3005 _AEI, _CLS, _CPC, _CWS, _DEP,
3006 _DLM, _EVT, _GCP, _CRT, _GWS,
3007 _HRV, _PRE, _PSE, _SRT, _SUB.
3009 Resource Tags (Names used to access individual fields within resource
3011 _DBT, _DPL, _DRS, _END, _FLC,
3012 _IOR, _LIN, _MOD, _PAR, _PHA,
3013 _PIN, _PPI, _POL, _RXL, _SLV,
3014 _SPE, _STB, _TXL, _VEN.
3016 ACPICA External Interfaces:
3017 ---------------------------
3019 Several new interfaces have been defined for use by ACPI-related device
3020 drivers and other host OS services:
3022 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
3024 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
3025 provided by the BIOS. They are intended to be used in conjunction with
3027 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
3028 mutual exclusion with the AML code/interpreter.
3030 AcpiGetEventResources: Returns the (formatted) resource descriptors as
3032 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
3034 resource descriptors associated with hardware-reduced platform events,
3036 to the AcpiGetCurrentResources interface.
3038 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
3039 operation regions, information about the Connection() object and any
3041 length information is passed to the region handler within the Context
3044 AcpiBufferToResource: This interface converts a raw AML buffer containing
3046 resource template or resource descriptor to the ACPI_RESOURCE internal
3048 suitable for use by device drivers. Can be used by an operation region
3050 to convert the Connection() buffer object into a ACPI_RESOURCE.
3052 Miscellaneous/Tools/TestSuites:
3053 -------------------------------
3055 Support for extended _HID names (Four alpha characters instead of three).
3056 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
3057 Support for ACPI 5.0 features in the ASLTS test suite.
3058 Fully updated documentation (ACPICA and iASL reference documents.)
3060 ACPI Table Definition Language:
3061 -------------------------------
3063 Support for this language was implemented and released as a subsystem of
3065 iASL compiler in 2010. (See the iASL compiler User Guide.)
3068 Non-ACPI 5.0 changes for this release:
3069 --------------------------------------
3071 1) ACPICA Core Subsystem:
3073 Fix a problem with operation region declarations where a failure can
3076 the region name and an argument that evaluates to an object (such as the
3077 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
3080 Do not abort an ACPI table load if an invalid space ID is found within.
3082 will be caught later if the offending method is executed. ACPICA BZ 925.
3084 Fixed an issue with the FFixedHW space ID where the ID was not always
3085 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
3087 Fixed a problem with the 32-bit generation of the unix-specific OSL
3088 (osunixxf.c). Lin Ming, ACPICA BZ 936.
3090 Several changes made to enable generation with the GCC 4.6 compiler.
3094 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
3096 field registers out-of-range.
3098 2) iASL Compiler/Disassembler and Tools:
3100 iASL: Implemented the __PATH__ operator, which returns the full pathname
3102 the current source file.
3104 AcpiHelp: Automatically display expanded keyword information for all ASL
3107 Debugger: Add "Template" command to disassemble/dump resource template
3110 Added a new master script to generate and execute the ASLTS test suite.
3111 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
3113 iASL: Fix problem with listing generation during processing of the
3115 operator where AML listing was disabled until the entire Switch block was
3118 iASL: Improve support for semicolon statement terminators. Fix "invalid
3119 character" message for some cases when the semicolon is used. Semicolons
3121 now allowed after every <Term> grammar element. ACPICA BZ 927.
3123 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
3126 Disassembler: Fix problem with disassembly of the DataTableRegion
3128 where an inadvertent "Unhandled deferred opcode" message could be
3131 3) Example Code and Data Size
3133 These are the sizes for the OS-independent acpica.lib produced by the
3134 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3135 includes the debug output trace mechanism and has a much larger code and
3140 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3141 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3143 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3144 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3146 ----------------------------------------
3147 22 September 2011. Summary of changes for version 20110922:
3151 Support for ACPI 5.0 in ACPICA has been underway for several months and
3153 be released at the same time that ACPI 5.0 is officially released.
3155 The ACPI 5.0 specification is on track for release in the next few
3158 1) ACPICA Core Subsystem:
3160 Fixed a problem where the maximum sleep time for the Sleep() operator was
3161 intended to be limited to two seconds, but was inadvertently limited to
3165 Linux and Unix makefiles: Added header file dependencies to ensure
3167 generation of ACPICA core code and utilities. Also simplified the
3169 considerably through the use of the vpath variable to specify search
3173 2) iASL Compiler/Disassembler and Tools:
3175 iASL: Implemented support to check the access length for all fields
3177 access named Resource Descriptor fields. For example, if a resource field
3179 defined to be two bits, a warning is issued if a CreateXxxxField() is
3181 with an incorrect bit length. This is implemented for all current
3183 descriptor names. ACPICA BZ 930.
3185 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
3189 iASL: Fixed a couple of issues associated with variable-length package
3190 objects. 1) properly handle constants like One, Ones, Zero -- do not make
3192 VAR_PACKAGE when these are used as a package length. 2) Allow the
3194 opcode (in addition to PACKAGE) when validating object types for
3198 iASL: Emit statistics for all output files (instead of just the ASL input
3200 AML output). Includes listings, hex files, etc.
3202 iASL: Added -G option to the table compiler to allow the compilation of
3204 ACPI tables. The only part of a table that is required is the standard
3209 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
3211 which also adds correct 64-bit support. Also, now all output filenames
3213 completely lower case.
3215 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
3216 loading table files. A warning is issued for any such tables. The only
3217 exception is an FADT. This also fixes a possible fault when attempting to
3219 non-AML tables. ACPICA BZ 932.
3221 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
3223 missing table terminator could cause a fault when using the -p option.
3225 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
3228 3) Example Code and Data Size
3230 These are the sizes for the OS-independent acpica.lib produced by the
3231 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3232 includes the debug output trace mechanism and has a much larger code and
3236 Previous Release (VC 9.0):
3237 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3238 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3239 Current Release (VC 9.0):
3240 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3241 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3244 ----------------------------------------
3245 23 June 2011. Summary of changes for version 20110623:
3247 1) ACPI CA Core Subsystem:
3249 Updated the predefined name repair mechanism to not attempt repair of a
3251 return object if a _PSS object is present. We can only sort the _TSS
3253 package if there is no _PSS within the same scope. This is because if
3256 present, the ACPI specification dictates that the _TSS Power Dissipation
3258 is to be ignored, and therefore some BIOSs leave garbage values in the
3260 Power field(s). In this case, it is best to just return the _TSS package
3262 is. Reported by, and fixed with assistance from Fenghua Yu.
3264 Added an option to globally disable the control method return value
3266 and repair. This runtime option can be used to disable return value
3269 this is causing a problem on a particular machine. Also added an option
3271 AcpiExec (-dr) to set this disable flag.
3273 All makefiles and project files: Major changes to improve generation of
3275 tools. ACPICA BZ 912:
3276 Reduce default optimization levels to improve compatibility
3277 For Linux, add strict-aliasing=0 for gcc 4
3278 Cleanup and simplify use of command line defines
3279 Cleanup multithread library support
3280 Improve usage messages
3282 Linux-specific header: update handling of THREAD_ID and pthread. For the
3284 bit case, improve casting to eliminate possible warnings, especially with
3288 Example Code and Data Size: These are the sizes for the OS-independent
3289 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3291 version of the code includes the debug output trace mechanism and has a
3293 larger code and data size.
3295 Previous Release (VC 9.0):
3296 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3297 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3298 Current Release (VC 9.0):
3299 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3300 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3302 2) iASL Compiler/Disassembler and Tools:
3304 With this release, a new utility named "acpihelp" has been added to the
3306 package. This utility summarizes the ACPI specification chapters for the
3308 and AML languages. It generates under Linux/Unix as well as Windows, and
3309 provides the following functionality:
3310 Find/display ASL operator(s) -- with description and syntax.
3311 Find/display ASL keyword(s) -- with exact spelling and descriptions.
3312 Find/display ACPI predefined name(s) -- with description, number
3313 of arguments, and the return value data type.
3314 Find/display AML opcode name(s) -- with opcode, arguments, and
3316 Decode/display AML opcode -- with opcode name, arguments, and
3319 Service Layers: Make multi-thread support configurable. Conditionally
3321 the multi-thread support so that threading libraries will not be linked
3324 necessary. The only tool that requires multi-thread support is AcpiExec.
3326 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
3328 Bison appear to want the interface to yyerror to be a const char * (or at
3329 least this is a problem when generating iASL on some systems.) ACPICA BZ
3333 Tools: Fix for systems where O_BINARY is not defined. Only used for
3335 versions of the tools.
3337 ----------------------------------------
3338 27 May 2011. Summary of changes for version 20110527:
3340 1) ACPI CA Core Subsystem:
3342 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
3344 signature. Now, only allow SSDT, OEMx, and a null signature. History:
3345 1) Originally, we checked the table signature for "SSDT" or "PSDT".
3346 (PSDT is now obsolete.)
3347 2) We added support for OEMx tables, signature "OEM" plus a fourth
3348 "don't care" character.
3349 3) Valid tables were encountered with a null signature, so we just
3350 gave up on validating the signature, (05/2008).
3351 4) We encountered non-AML tables such as the MADT, which caused
3352 interpreter errors and kernel faults. So now, we once again allow
3353 only SSDT, OEMx, and now, also a null signature. (05/2011).
3355 Added the missing _TDL predefined name to the global name list in order
3357 enable validation. Affects both the core ACPICA code and the iASL
3360 Example Code and Data Size: These are the sizes for the OS-independent
3361 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3363 version of the code includes the debug output trace mechanism and has a
3365 larger code and data size.
3367 Previous Release (VC 9.0):
3368 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3369 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3370 Current Release (VC 9.0):
3371 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3372 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3374 2) iASL Compiler/Disassembler and Tools:
3376 Debugger/AcpiExec: Implemented support for "complex" method arguments on
3378 debugger command line. This adds support beyond simple integers --
3380 Strings, Buffers, and Packages. Includes support for nested packages.
3381 Increased the default command line buffer size to accommodate these
3383 See the ACPICA reference for details and syntax. ACPICA BZ 917.
3385 Debugger/AcpiExec: Implemented support for "default" method arguments for
3387 Execute/Debug command. Now, the debugger will always invoke a control
3389 with the required number of arguments -- even if the command line
3391 none or insufficient arguments. It uses default integer values for any
3393 arguments. Also fixes a bug where only six method arguments maximum were
3394 supported instead of the required seven.
3396 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
3398 also return status in order to prevent buffer overruns. See the ACPICA
3399 reference for details and syntax. ACPICA BZ 921
3401 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
3402 makefiles to simplify support for the two different but similar parser
3403 generators, bison and yacc.
3405 Updated the generic unix makefile for gcc 4. The default gcc version is
3407 expected to be 4 or greater, since options specific to gcc 4 are used.
3409 ----------------------------------------
3410 13 April 2011. Summary of changes for version 20110413:
3412 1) ACPI CA Core Subsystem:
3414 Implemented support to execute a so-called "orphan" _REG method under the
3416 device. This change will force the execution of a _REG method underneath
3419 device even if there is no corresponding operation region of type
3420 EmbeddedControl. Fixes a problem seen on some machines and apparently is
3421 compatible with Windows behavior. ACPICA BZ 875.
3423 Added more predefined methods that are eligible for automatic NULL
3425 element removal. This change adds another group of predefined names to
3428 of names that can be repaired by having NULL package elements dynamically
3429 removed. This group are those methods that return a single variable-
3431 package containing simple data types such as integers, buffers, strings.
3433 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
3436 and _TZD. ACPICA BZ 914.
3438 Split and segregated all internal global lock functions to a new file,
3441 Updated internal address SpaceID for DataTable regions. Moved this
3444 id in preparation for ACPI 5.0 changes that will include some new space
3447 change should not affect user/host code.
3449 Example Code and Data Size: These are the sizes for the OS-independent
3451 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3453 the code includes the debug output trace mechanism and has a much larger
3458 Previous Release (VC 9.0):
3459 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3460 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3461 Current Release (VC 9.0):
3462 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3463 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3465 2) iASL Compiler/Disassembler and Tools:
3467 iASL/DTC: Major update for new grammar features. Allow generic data types
3469 custom ACPI tables. Field names are now optional. Any line can be split
3471 multiple lines using the continuation char (\). Large buffers now use
3473 continuation character(s) and no colon on the continuation lines. See the
3475 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
3478 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
3480 Since the parser stuffs a "zero" as the return value for these statements
3483 the underlying AML grammar), they were seen as "return with value" by the
3485 semantic checking. They are now seen correctly as "null" return
3488 iASL: Check if a_REG declaration has a corresponding Operation Region.
3490 check for each _REG to ensure that there is in fact a corresponding
3492 region declaration in the same scope. If not, the _REG method is not very
3494 since it probably won't be executed. ACPICA BZ 915.
3496 iASL/DTC: Finish support for expression evaluation. Added a new
3499 that implements c-style operator precedence and parenthesization. ACPICA
3503 Disassembler/DTC: Remove support for () and <> style comments in data
3506 that DTC has full expression support, we don't want to have comment
3509 start with a parentheses or a less-than symbol. Now, only the standard /*
3512 comments are supported, as well as the bracket [] comments.
3514 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
3516 headers in the acpidump file. Update the header validation to support
3518 tables. Problem introduced in previous AcpiXtract version in the change
3520 support "wrong checksum" error messages emitted by acpidump utility.
3522 iASL: Add a * option to generate all template files (as a synonym for
3526 "iasl -T *" or "iasl -T ALL".
3528 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
3530 abort the compiler on "fatal" errors, simply should abort the current
3532 This allows multiple compiles with a single (possibly wildcard) compiler
3535 ----------------------------------------
3536 16 March 2011. Summary of changes for version 20110316:
3538 1) ACPI CA Core Subsystem:
3540 Fixed a problem caused by a _PRW method appearing at the namespace root
3542 during the setup of wake GPEs. A fault could occur if a _PRW directly
3545 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3547 Implemented support for "spurious" Global Lock interrupts. On some
3549 global lock interrupt can occur without the pending flag being set. Upon
3552 interrupt, we now ensure that a thread is actually waiting for the lock
3554 signaling GL availability. Rafael Wysocki, Bob Moore.
3556 Example Code and Data Size: These are the sizes for the OS-independent
3558 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3560 the code includes the debug output trace mechanism and has a much larger
3565 Previous Release (VC 9.0):
3566 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3567 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3568 Current Release (VC 9.0):
3569 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3570 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3572 2) iASL Compiler/Disassembler and Tools:
3574 Implemented full support for the "SLIC" ACPI table. Includes support in
3576 header files, disassembler, table compiler, and template generator. Bob
3580 AcpiXtract: Correctly handle embedded comments and messages from
3582 Apparently some or all versions of acpidump will occasionally emit a
3585 "Wrong checksum", etc., into the dump file. This was causing problems for
3586 AcpiXtract. ACPICA BZ 905.
3588 iASL: Fix the Linux makefile by removing an inadvertent double file
3592 AcpiExec: Update installation of operation region handlers. Install one
3594 for a user-defined address space. This is used by the ASL test suite
3597 ----------------------------------------
3598 11 February 2011. Summary of changes for version 20110211:
3600 1) ACPI CA Core Subsystem:
3602 Added a mechanism to defer _REG methods for some early-installed
3604 Most user handlers should be installed before call to
3605 AcpiEnableSubsystem.
3606 However, Event handlers and region handlers should be installed after
3607 AcpiInitializeObjects. Override handlers for the "default" regions should
3609 installed early, however. This change executes all _REG methods for the
3610 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3611 chicken/egg issues between them. ACPICA BZ 848.
3613 Implemented an optimization for GPE detection. This optimization will
3615 ignore GPE registers that contain no enabled GPEs -- there is no need to
3616 read the register since this information is available internally. This
3617 becomes more important on machines with a large GPE space. ACPICA
3619 884. Lin Ming. Suggestion from Joe Liu.
3621 Removed all use of the highly unreliable FADT revision field. The
3623 number in the FADT has been found to be completely unreliable and cannot
3625 trusted. Only the actual table length can be used to infer the version.
3627 change updates the ACPICA core and the disassembler so that both no
3629 even look at the FADT version and instead depend solely upon the FADT
3632 Fix an unresolved name issue for the no-debug and no-error-message source
3633 generation cases. The _AcpiModuleName was left undefined in these cases,
3635 it is actually needed as a parameter to some interfaces. Define
3636 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3638 Split several large files (makefiles and project files updated)
3639 utglobal.c -> utdecode.c
3640 dbcomds.c -> dbmethod.c dbnames.c
3641 dsopcode.c -> dsargs.c dscontrol.c
3642 dsload.c -> dsload2.c
3643 aslanalyze.c -> aslbtypes.c aslwalks.c
3645 Example Code and Data Size: These are the sizes for the OS-independent
3646 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3647 debug version of the code includes the debug output trace mechanism and
3649 a much larger code and data size.
3651 Previous Release (VC 9.0):
3652 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3653 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3654 Current Release (VC 9.0):
3655 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3656 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3658 2) iASL Compiler/Disassembler and Tools:
3660 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3661 These are useful C-style macros with the standard definitions. ACPICA
3664 iASL/DTC: Added support for integer expressions and labels. Support for
3666 expressions for all integer fields in all ACPI tables. Support for labels
3668 "generic" portions of tables such as UEFI. See the iASL reference manual.
3670 Debugger: Added a command to display the status of global handlers. The
3671 "handlers" command will display op region, fixed event, and miscellaneous
3672 global handlers. installation status -- and for op regions, whether
3674 or user-installed handler will be used.
3676 iASL: Warn if reserved method incorrectly returns a value. Many
3678 names are defined such that they do not return a value. If implemented as
3680 method, issue a warning if such a name explicitly returns a value. ACPICA
3683 iASL: Added detection of GPE method name conflicts. Detects a conflict
3685 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3687 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3689 iASL/DTC: Fixed a couple input scanner issues with comments and line
3690 numbers. Comment remover could get confused and miss a comment ending.
3692 a problem with line counter maintenance.
3694 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3696 no need to abort on simple errors within a field definition.
3698 Debugger: Simplified the output of the help command. All help output now
3700 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3702 ----------------------------------------
3703 12 January 2011. Summary of changes for version 20110112:
3705 1) ACPI CA Core Subsystem:
3707 Fixed a race condition between method execution and namespace walks that
3709 possibly cause a fault. The problem was apparently introduced in version
3710 20100528 as a result of a performance optimization that reduces the
3713 namespace walks upon method exit by using the delete_namespace_subtree
3714 function instead of the delete_namespace_by_owner function used
3716 Bug is a missing namespace lock in the delete_namespace_subtree function.
3717 dana.myers@oracle.com
3719 Fixed several issues and a possible fault with the automatic "serialized"
3720 method support. History: This support changes a method to "serialized" on
3722 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3723 possibility that it cannot handle reentrancy. This fix repairs a couple
3725 issues seen in the field, especially on machines with many cores:
3727 1) Delete method children only upon the exit of the last thread,
3728 so as to not delete objects out from under other running threads
3729 (and possibly causing a fault.)
3730 2) Set the "serialized" bit for the method only upon the exit of the
3731 Last thread, so as to not cause deadlock when running threads
3733 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3734 so that there is no longer any confusion between the two.
3736 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3738 Debugger: Now lock the namespace for duration of a namespace dump.
3740 issues if the namespace is changing dynamically underneath the debugger.
3741 Especially affects temporary namespace nodes, since the debugger displays
3744 Updated the ordering of include files. The ACPICA headers should appear
3745 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3747 any necessary compiler-specific defines, etc. Affects the ACPI-related
3751 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3753 to all module headers and signons, including the Linux header. This
3755 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3758 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3759 project files for VC++ 6.0 are now obsolete. New project files can be
3761 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3764 Example Code and Data Size: These are the sizes for the OS-independent
3765 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3766 debug version of the code includes the debug output trace mechanism and
3768 much larger code and data size.
3770 Previous Release (VC 6.0):
3771 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3772 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3773 Current Release (VC 9.0):
3774 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3775 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3777 2) iASL Compiler/Disassembler and Tools:
3779 iASL: Added generic data types to the Data Table compiler. Add "generic"
3781 types such as UINT32, String, Unicode, etc., to simplify the generation
3783 platform-defined tables such as UEFI. Lin Ming.
3785 iASL: Added listing support for the Data Table Compiler. Adds listing
3787 (-l) to display actual binary output for each line of input code.
3789 ----------------------------------------
3790 09 December 2010. Summary of changes for version 20101209:
3792 1) ACPI CA Core Subsystem:
3794 Completed the major overhaul of the GPE support code that was begun in
3796 2010. Major features include: removal of _PRW execution in ACPICA (host
3797 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3798 changes to existing interfaces, simplification of GPE handler operation,
3800 a handful of new interfaces:
3806 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3808 See the ACPICA Programmer Reference for full details and programming
3809 information. See the new section 4.4 "General Purpose Event (GPE)
3811 for a full overview, and section 8.7 "ACPI General Purpose Event
3813 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3815 Bob Moore, Rafael Wysocki.
3817 Implemented a new GPE feature for Windows compatibility, the "Implicit
3819 GPE Notify". This feature will automatically issue a Notify(2) on a
3821 when a Wake GPE is received if there is no corresponding GPE method or
3822 handler. ACPICA BZ 870.
3824 Fixed a problem with the Scope() operator during table parse and load
3826 During load phase (table load or method execution), the scope operator
3828 not enter the target into the namespace. Instead, it should open a new
3830 at the target location. Linux BZ 19462, ACPICA BZ 882.
3832 Example Code and Data Size: These are the sizes for the OS-independent
3833 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3834 debug version of the code includes the debug output trace mechanism and
3836 much larger code and data size.
3839 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3840 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3842 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3843 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3845 2) iASL Compiler/Disassembler and Tools:
3847 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3849 "bus-specific" per the ACPI specification, and therefore any characters
3851 acceptable. The only checks that can be performed are for a null string
3853 perhaps for a leading asterisk. ACPICA BZ 886.
3855 iASL: Fixed a problem where a syntax error that caused a premature EOF
3856 condition on the source file emitted a very confusing error message. The
3857 premature EOF is now detected correctly. ACPICA BZ 891.
3859 Disassembler: Decode the AccessSize within a Generic Address Structure
3861 access, word access, etc.) Note, this field does not allow arbitrary bit
3862 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3864 New: AcpiNames utility - Example namespace dump utility. Shows an example
3866 ACPICA configuration for a minimal namespace dump utility. Uses table and
3867 namespace managers, but no AML interpreter. Does not add any
3869 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3870 partition and configure ACPICA. ACPICA BZ 883.
3872 AML Debugger: Increased the debugger buffer size for method return
3874 Was 4K, increased to 16K. Also enhanced error messages for debugger
3876 execution, including the buffer overflow case.
3878 ----------------------------------------
3879 13 October 2010. Summary of changes for version 20101013:
3881 1) ACPI CA Core Subsystem:
3883 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
3885 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
3886 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
3888 Changed the type of the predefined namespace object _TZ from ThermalZone
3890 Device. This was found to be confusing to the host software that
3892 the various thermal zones, since _TZ is not really a ThermalZone.
3895 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
3898 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
3899 string is "Windows 2006 SP2".
3901 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
3903 code automatically repairs _HID-related strings, this type of code is no
3904 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
3907 Example Code and Data Size: These are the sizes for the OS-independent
3908 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3909 debug version of the code includes the debug output trace mechanism and
3911 much larger code and data size.
3914 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3915 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3917 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3918 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3920 2) iASL Compiler/Disassembler and Tools:
3922 iASL: Implemented additional compile-time validation for _HID strings.
3924 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
3927 the string must be exactly seven or eight characters. For both _HID and
3929 strings, all characters must be alphanumeric. ACPICA BZ 874.
3931 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
3932 descriptors that are mostly or all zeros, with the expectation that they
3934 be filled in at runtime. iASL now allows this as long as there is a
3936 tag" (name) associated with the descriptor, which gives the ASL a handle
3937 needed to modify the descriptor. ACPICA BZ 873.
3939 Added single-thread support to the generic Unix application OSL.
3941 for iASL support, this change removes the use of semaphores in the
3943 threaded ACPICA tools/applications - increasing performance. The
3944 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
3945 option. ACPICA BZ 879.
3947 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
3949 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
3951 iASL: Moved all compiler messages to a new file, aslmessages.h.
3953 ----------------------------------------
3954 15 September 2010. Summary of changes for version 20100915:
3956 1) ACPI CA Core Subsystem:
3958 Removed the AcpiOsDerivePciId OSL interface. The various host
3960 of this function were not OS-dependent and are now obsolete and can be
3961 removed from all host OSLs. This function has been replaced by
3962 AcpiHwDerivePciId, which is now part of the ACPICA core code.
3963 AcpiHwDerivePciId has been implemented without recursion. Adds one new
3964 module, hwpci.c. ACPICA BZ 857.
3966 Implemented a dynamic repair for _HID and _CID strings. The following
3967 problems are now repaired at runtime: 1) Remove a leading asterisk in the
3968 string, and 2) the entire string is uppercased. Both repairs are in
3969 accordance with the ACPI specification and will simplify host driver
3973 The ACPI_THREAD_ID type is no longer configurable, internally it is now
3974 always UINT64. This simplifies the ACPICA code, especially any printf
3976 UINT64 is the only common data type for all thread_id types across all
3977 operating systems. It is now up to the host OSL to cast the native
3979 type to UINT64 before returning the value to ACPICA (via
3981 Lin Ming, Bob Moore.
3983 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
3985 keyword is not standard across compilers, and this type allows inline to
3987 configured on a per-compiler basis. Lin Ming.
3989 Made the system global AcpiGbl_SystemAwakeAndRunning publically
3991 Added an extern for this boolean in acpixf.h. Some hosts utilize this
3993 during suspend/restore operations. ACPICA BZ 869.
3995 All code that implements error/warning messages with the "ACPI:" prefix
3997 been moved to a new module, utxferror.c.
3999 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
4001 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
4003 Example Code and Data Size: These are the sizes for the OS-independent
4004 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4005 debug version of the code includes the debug output trace mechanism and
4007 much larger code and data size.
4010 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4011 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4013 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4014 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4016 2) iASL Compiler/Disassembler and Tools:
4018 iASL/Disassembler: Write ACPI errors to stderr instead of the output
4020 This keeps the output files free of random error messages that may
4022 from within the namespace/interpreter code. Used this opportunity to
4024 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
4025 866. Lin Ming, Bob Moore.
4027 Tools: update some printfs for ansi warnings on size_t. Handle width
4029 of size_t on 32-bit versus 64-bit generations. Lin Ming.
4031 ----------------------------------------
4032 06 August 2010. Summary of changes for version 20100806:
4034 1) ACPI CA Core Subsystem:
4036 Designed and implemented a new host interface to the _OSI support code.
4038 will allow the host to dynamically add or remove multiple _OSI strings,
4040 well as install an optional handler that is called for each _OSI
4042 Also added a new AML debugger command, 'osi' to display and modify the
4044 _OSI string table, and test support in the AcpiExec utility. See the
4046 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
4048 AcpiInstallInterface - Add an _OSI string.
4049 AcpiRemoveInterface - Delete an _OSI string.
4050 AcpiInstallInterfaceHandler - Install optional _OSI handler.
4052 AcpiOsValidateInterface - no longer used.
4054 source/components/utilities/utosi.c
4056 Re-introduced the support to enable multi-byte transfers for Embedded
4057 Controller (EC) operation regions. A reported problem was found to be a
4059 in the host OS, not in the multi-byte support. Previously, the maximum
4061 size passed to the EC operation region handler was a single byte. There
4063 often EC Fields larger than one byte that need to be transferred, and it
4065 useful for the EC driver to lock these as a single transaction. This
4067 enables single transfers larger than 8 bits. This effectively changes the
4068 access to the EC space from ByteAcc to AnyAcc, and will probably require
4069 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
4071 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
4073 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
4074 prototype in acpiosxf.h had the output value pointer as a (void *).
4075 It should be a (UINT64 *). This may affect some host OSL code.
4077 Fixed a couple problems with the recently modified Linux makefiles for
4079 and AcpiExec. These new makefiles place the generated object files in the
4080 local directory so that there can be no collisions between the files that
4082 shared between them that are compiled with different options.
4084 Example Code and Data Size: These are the sizes for the OS-independent
4085 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4086 debug version of the code includes the debug output trace mechanism and
4088 much larger code and data size.
4091 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4092 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4094 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4095 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4097 2) iASL Compiler/Disassembler and Tools:
4099 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
4101 namespace from and disassemble an entire group of AML files. Useful for
4102 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
4104 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
4106 iASL: Allow multiple invocations of -e option. This change allows
4108 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
4112 ----------------------------------------
4113 02 July 2010. Summary of changes for version 20100702:
4115 1) ACPI CA Core Subsystem:
4117 Implemented several updates to the recently added GPE reference count
4118 support. The model for "wake" GPEs is changing to give the host OS
4120 control of these GPEs. Eventually, the ACPICA core will not execute any
4122 methods, since the host already must execute them. Also, additional
4124 were made to help ensure that the reference counts are kept in proper
4125 synchronization with reality. Rafael J. Wysocki.
4127 1) Ensure that GPEs are not enabled twice during initialization.
4128 2) Ensure that GPE enable masks stay in sync with the reference count.
4129 3) Do not inadvertently enable GPEs when writing GPE registers.
4130 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
4131 interface. This interface will set or clear individual GPEs for wakeup.
4132 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
4134 are now used for "runtime" GPEs only.
4136 Changed the behavior of the GPE install/remove handler interfaces. The
4139 no longer disabled during this process, as it was found to cause problems
4141 some machines. Rafael J. Wysocki.
4143 Reverted a change introduced in version 20100528 to enable Embedded
4144 Controller multi-byte transfers. This change was found to cause problems
4146 Index Fields and possibly Bank Fields. It will be reintroduced when these
4147 problems have been resolved.
4149 Fixed a problem with references to Alias objects within Package Objects.
4151 reference to an Alias within the definition of a Package was not always
4152 resolved properly. Aliases to objects like Processors, Thermal zones,
4154 were resolved to the actual object instead of a reference to the object
4157 should be. Package objects are only allowed to contain integer, string,
4158 buffer, package, and reference objects. Redhat bugzilla 608648.
4160 Example Code and Data Size: These are the sizes for the OS-independent
4161 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4162 debug version of the code includes the debug output trace mechanism and
4164 much larger code and data size.
4167 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4168 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4170 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4171 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4173 2) iASL Compiler/Disassembler and Tools:
4175 iASL: Implemented a new compiler subsystem to allow definition and
4176 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
4178 are called "ACPI Data Tables", and the new compiler is the "Data Table
4179 Compiler". This compiler is intended to simplify the existing error-prone
4180 process of creating these tables for the BIOS, as well as allowing the
4181 disassembly, modification, recompilation, and override of existing ACPI
4183 tables. See the iASL User Guide for detailed information.
4185 iASL: Implemented a new Template Generator option in support of the new
4187 Table Compiler. This option will create examples of all known ACPI tables
4188 that can be used as the basis for table development. See the iASL
4189 documentation and the -T option.
4191 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
4194 Updated the Linux makefiles for iASL and AcpiExec to place the generated
4195 object files in the local directory so that there can be no collisions
4196 between the shared files between them that are generated with different
4199 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
4201 the #define __APPLE__ to enable this support.
4203 ----------------------------------------
4204 28 May 2010. Summary of changes for version 20100528:
4206 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
4207 available at www.acpi.info. This is primarily an errata release.
4209 1) ACPI CA Core Subsystem:
4211 Undefined ACPI tables: We are looking for the definitions for the
4213 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
4215 Implemented support to enable multi-byte transfers for Embedded
4217 (EC) operation regions. Previously, the maximum data size passed to the
4219 operation region handler was a single byte. There are often EC Fields
4221 than one byte that need to be transferred, and it is useful for the EC
4223 to lock these as a single transaction. This change enables single
4225 larger than 8 bits. This effectively changes the access to the EC space
4227 ByteAcc to AnyAcc, and will probably require changes to the host OS
4229 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
4231 transfers. Alexey Starikovskiy, Lin Ming
4233 Implemented a performance enhancement for namespace search and access.
4235 change enhances the performance of namespace searches and walks by adding
4237 backpointer to the parent in each namespace node. On large namespaces,
4239 change can improve overall ACPI performance by up to 9X. Adding a pointer
4241 each namespace node increases the overall size of the internal namespace
4243 about 5%, since each namespace entry usually consists of both a namespace
4244 node and an ACPI operand object. However, this is the first growth of the
4245 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
4247 Implemented a performance optimization that reduces the number of
4249 walks. On control method exit, only walk the namespace if the method is
4251 to have created namespace objects outside of its local scope. Previously,
4253 entire namespace was traversed on each control method exit. This change
4255 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
4258 Added support to truncate I/O addresses to 16 bits for Windows
4260 Some ASL code has been seen in the field that inadvertently has bits set
4261 above bit 15. This feature is optional and is enabled if the BIOS
4263 any Windows OSI strings. It can also be enabled by the host OS. Matthew
4266 Added support to limit the maximum time for the ASL Sleep() operator. To
4267 prevent accidental deep sleeps, limit the maximum time that Sleep() will
4268 actually sleep. Configurable, the default maximum is two seconds. ACPICA
4271 Added run-time validation support for the _WDG and_WED Microsoft
4273 methods. These objects are defined by "Windows Instrumentation", and are
4275 part of the ACPI spec. ACPICA BZ 860.
4277 Expanded all statistic counters used during namespace and device
4278 initialization from 16 to 32 bits in order to support very large
4281 Replaced all instances of %d in printf format specifiers with %u since
4283 all integers in ACPICA are unsigned.
4285 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
4289 Example Code and Data Size: These are the sizes for the OS-independent
4290 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4291 debug version of the code includes the debug output trace mechanism and
4293 much larger code and data size.
4296 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4297 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4299 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4300 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4302 2) iASL Compiler/Disassembler and Tools:
4304 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
4305 methods. These objects are defined by "Windows Instrumentation", and are
4307 part of the ACPI spec. ACPICA BZ 860.
4309 AcpiExec: added option to disable the memory tracking mechanism. The -dt
4310 option will disable the tracking mechanism, which improves performance
4313 AcpiExec: Restructured the command line options into -d (disable) and -e
4316 ----------------------------------------
4317 28 April 2010. Summary of changes for version 20100428:
4319 1) ACPI CA Core Subsystem:
4321 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
4322 including FADT-based and GPE Block Devices, execute any _PRW methods in
4324 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
4325 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
4326 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
4327 Devices. Provides compatibility with other ACPI implementations. Two new
4328 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
4331 Fixed a regression introduced in version 20100331 within the table
4333 where initial table loading could fail. This was introduced in the fix
4335 AcpiReallocateRootTable. Also, renamed some of fields in the table
4337 data structures to clarify their meaning and use.
4339 Fixed a possible allocation overrun during internal object copy in
4340 AcpiUtCopySimpleObject. The original code did not correctly handle the
4342 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
4345 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
4346 possible access beyond end-of-allocation. Also, now fully validate
4348 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
4350 Example Code and Data Size: These are the sizes for the OS-independent
4351 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4352 debug version of the code includes the debug output trace mechanism and
4354 much larger code and data size.
4357 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4358 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4360 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4361 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4363 2) iASL Compiler/Disassembler and Tools:
4365 iASL: Implemented Min/Max/Len/Gran validation for address resource
4366 descriptors. This change implements validation for the address fields
4368 are common to all address-type resource descriptors. These checks are
4369 implemented: Checks for valid Min/Max, length within the Min/Max window,
4370 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
4372 table 6-40 in the ACPI 4.0a specification. Also split the large
4374 and aslrestype2.c files into five new files. ACPICA BZ 840.
4376 iASL: Added support for the _Wxx predefined names. This support was
4378 and these names were not recognized by the compiler as valid predefined
4379 names. ACPICA BZ 851.
4381 iASL: Added an error for all predefined names that are defined to return
4383 value and thus must be implemented as Control Methods. These include all
4385 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
4386 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
4388 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
4390 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
4392 dynamically loaded via the Load() operator. Also cleaned up output for
4395 ta and -tc options. ACPICA BZ 853.
4397 Tests: Added a new file with examples of extended iASL error checking.
4398 Demonstrates the advanced error checking ability of the iASL compiler.
4399 Available at tests/misc/badcode.asl.
4401 ----------------------------------------
4402 31 March 2010. Summary of changes for version 20100331:
4404 1) ACPI CA Core Subsystem:
4406 Completed a major update for the GPE support in order to improve support
4408 shared GPEs and to simplify both host OS and ACPICA code. Added a
4410 count mechanism to support shared GPEs that require multiple device
4412 Several external interfaces have changed. One external interface has been
4413 removed. One new external interface was added. Most of the GPE external
4414 interfaces now use the GPE spinlock instead of the events mutex (and the
4415 Flags parameter for many GPE interfaces has been removed.) See the
4417 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
4419 Wysocki. ACPICA BZ 831.
4422 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
4428 Implemented write support for DataTable operation regions. These regions
4430 defined via the DataTableRegion() operator. Previously, only read support
4432 implemented. The ACPI specification allows DataTableRegions to be
4436 Implemented a new subsystem option to force a copy of the DSDT to local
4437 memory. Optionally copy the entire DSDT to local memory (instead of
4439 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
4441 the original DSDT, creating the need for this option. Default is FALSE,
4445 Implemented detection of a corrupted or replaced DSDT. This change adds
4446 support to detect a DSDT that has been corrupted and/or replaced from
4448 the OS (by firmware). This is typically catastrophic for the system, but
4450 been seen on some machines. Once this problem has been detected, the DSDT
4451 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
4453 Fixed two problems with AcpiReallocateRootTable during the root table
4455 When copying the root table to the new allocation, the length used was
4456 incorrect. The new size was used instead of the current table size,
4458 too much data was copied. Also, the count of available slots for ACPI
4460 was not set correctly. Alexey Starikovskiy, Bob Moore.
4462 Example Code and Data Size: These are the sizes for the OS-independent
4463 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4464 debug version of the code includes the debug output trace mechanism and
4466 much larger code and data size.
4469 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4470 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4472 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4473 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4475 2) iASL Compiler/Disassembler and Tools:
4477 iASL: Implement limited typechecking for values returned from predefined
4478 control methods. The type of any returned static (unnamed) object is now
4479 validated. For example, Return(1). ACPICA BZ 786.
4481 iASL: Fixed a predefined name object verification regression. Fixes a
4483 introduced in version 20100304. An error is incorrectly generated if a
4484 predefined name is declared as a static named object with a value defined
4485 using the keywords "Zero", "One", or "Ones". Lin Ming.
4487 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
4489 reducing the requested registry access rights. ACPICA BZ 842.
4491 Disassembler: fixed a possible fault when generating External()
4493 Introduced in commit ae7d6fd: Properly handle externals with parent-
4495 (carat). Fixes a string length allocation calculation. Lin Ming.
4497 ----------------------------------------
4498 04 March 2010. Summary of changes for version 20100304:
4500 1) ACPI CA Core Subsystem:
4502 Fixed a possible problem with the AML Mutex handling function
4503 AcpiExReleaseMutex where the function could fault under the very rare
4504 condition when the interpreter has blocked, the interpreter lock is
4506 the interpreter is then reentered via the same thread, and attempts to
4507 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
4511 Implemented additional configuration support for the AML "Debug Object".
4512 Output from the debug object can now be enabled via a global variable,
4513 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
4515 This debug output is now available in the release version of ACPICA
4517 of just the debug version. Also, the entire debug output module can now
4519 configured out of the ACPICA build if desired. One new file added,
4520 executer/exdebug.c. Lin Ming, Bob Moore.
4522 Added header support for the ACPI MCHI table (Management Controller Host
4523 Interface Table). This table was added in ACPI 4.0, but the defining
4525 has only recently become available.
4527 Standardized output of integer values for ACPICA warnings/errors. Always
4529 0x prefix for hex output, always use %u for unsigned integer decimal
4531 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
4533 invocations.) These invocations were converted from the original
4534 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
4536 Example Code and Data Size: These are the sizes for the OS-independent
4537 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4538 debug version of the code includes the debug output trace mechanism and
4540 much larger code and data size.
4543 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4544 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4546 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4547 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4549 2) iASL Compiler/Disassembler and Tools:
4551 iASL: Implemented typechecking support for static (non-control method)
4552 predefined named objects that are declared with the Name() operator. For
4553 example, the type of this object is now validated to be of type Integer:
4554 Name(_BBN, 1). This change migrates the compiler to using the core
4556 name table instead of maintaining a local version. Added a new file,
4557 aslpredef.c. ACPICA BZ 832.
4559 Disassembler: Added support for the ACPI 4.0 MCHI table.
4561 ----------------------------------------
4562 21 January 2010. Summary of changes for version 20100121:
4564 1) ACPI CA Core Subsystem:
4566 Added the 2010 copyright to all module headers and signons. This affects
4567 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4568 tools/utilities, and the test suites.
4570 Implemented a change to the AcpiGetDevices interface to eliminate
4572 invocations of the _STA method. In the case where a specific _HID is
4573 requested, do not run _STA until a _HID match is found. This eliminates
4574 potentially dozens of _STA calls during a search for a particular
4576 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4578 Implemented an additional repair for predefined method return values.
4580 to repair unexpected NULL elements within returned Package objects.
4583 Integer of value zero, a NULL String, or a zero-length Buffer as
4585 ACPICA BZ 818. Lin Ming, Bob Moore.
4587 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4589 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4591 64-bit AML integers). It is now obsolete and this change removes it from
4593 ACPICA code base, replaced by UINT64. The original typedef has been
4595 for now for compatibility with existing device driver code. ACPICA BZ
4598 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4600 the parse tree object.
4602 Added additional warning options for the gcc-4 generation. Updated the
4604 accordingly. This includes some code restructuring to eliminate
4606 code, elimination of some gotos, elimination of unused return values,
4608 additional casting, and removal of redundant declarations.
4610 Example Code and Data Size: These are the sizes for the OS-independent
4611 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4612 debug version of the code includes the debug output trace mechanism and
4614 much larger code and data size.
4617 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4618 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4620 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4621 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4623 2) iASL Compiler/Disassembler and Tools:
4625 No functional changes for this release.
4627 ----------------------------------------
4628 14 December 2009. Summary of changes for version 20091214:
4630 1) ACPI CA Core Subsystem:
4632 Enhanced automatic data type conversions for predefined name repairs.
4634 change expands the automatic repairs/conversions for predefined name
4636 values to make Integers, Strings, and Buffers fully interchangeable.
4639 Buffer can be converted to a Package of Integers if necessary. The
4641 module was completely restructured. Lin Ming, Bob Moore.
4643 Implemented automatic removal of null package elements during predefined
4645 repairs. This change will automatically remove embedded and trailing NULL
4646 package elements from returned package objects that are defined to
4649 variable number of sub-packages. The driver is then presented with a
4651 with no null elements to deal with. ACPICA BZ 819.
4653 Implemented a repair for the predefined _FDE and _GTM names. The expected
4654 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4656 possible problems (both seen in the field), where a package of integers
4658 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4661 Implemented additional module-level code support. This change will
4663 execute module-level code that is not at the root of the namespace (under
4665 Device object, etc.). Now executes the code within the current scope
4667 of the root. ACPICA BZ 762. Lin Ming.
4669 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4671 problem where mutex errors can occur when running a _REG method that is
4673 the same scope as a method-defined operation region or an operation
4675 under a module-level IF block. This type of code is rare, so the problem
4677 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4679 Fixed a possible memory leak during module-level code execution. An
4681 could be leaked for each block of executed module-level code if the
4682 interpreter slack mode is enabled This change deletes any implicitly
4684 object from the module-level code block. Lin Ming.
4686 Removed messages for successful predefined repair(s). The repair
4688 was considered too wordy. Now, messages are only unconditionally emitted
4690 the return object cannot be repaired. Existing messages for successful
4691 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4694 Example Code and Data Size: These are the sizes for the OS-independent
4695 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4696 debug version of the code includes the debug output trace mechanism and
4698 much larger code and data size.
4701 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4702 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4704 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4705 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4707 2) iASL Compiler/Disassembler and Tools:
4709 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4711 were no longer automatically removed at the termination of the compile.
4713 acpiexec: Implemented the -f option to specify default region fill value.
4714 This option specifies the value used to initialize buffers that simulate
4715 operation regions. Default value is zero. Useful for debugging problems
4717 depend on a specific initial value for a region or field.
4719 ----------------------------------------
4720 12 November 2009. Summary of changes for version 20091112:
4722 1) ACPI CA Core Subsystem:
4724 Implemented a post-order callback to AcpiWalkNamespace. The existing
4725 interface only has a pre-order callback. This change adds an additional
4726 parameter for a post-order callback which will be more useful for bus
4728 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4730 Modified the behavior of the operation region memory mapping cache for
4731 SystemMemory. Ensure that the memory mappings created for operation
4733 do not cross 4K page boundaries. Crossing a page boundary while mapping
4734 regions can cause kernel warnings on some hosts if the pages have
4736 attributes. Such regions are probably BIOS bugs, and this is the
4738 Linux BZ 14445. Lin Ming.
4740 Implemented an automatic repair for predefined methods that must return
4741 sorted lists. This change will repair (by sorting) packages returned by
4743 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4745 and do not contain NULL package elements. Adds one new file,
4746 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4748 Fixed a possible fault during predefined name validation if a return
4750 object contains NULL elements. Also adds a warning if a NULL element is
4751 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4753 include repair or removal of all such NULL elements where possible.
4755 Implemented additional module-level executable AML code support. This
4757 will execute module-level code that is not at the root of the namespace
4758 (under a Device object, etc.) at table load time. Module-level executable
4760 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4762 Implemented a new internal function to create Integer objects. This
4764 simplifies miscellaneous object creation code. ACPICA BZ 823.
4766 Reduced the severity of predefined repair messages, Warning to Info.
4768 the object was successfully repaired, a warning is too severe. Reduced to
4770 info message for now. These messages may eventually be changed to debug-
4774 Example Code and Data Size: These are the sizes for the OS-independent
4775 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4776 debug version of the code includes the debug output trace mechanism and
4778 much larger code and data size.
4781 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4782 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4784 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4785 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4787 2) iASL Compiler/Disassembler and Tools:
4789 iASL: Implemented Switch() with While(1) so that Break works correctly.
4791 change correctly implements the Switch operator with a surrounding
4793 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4795 iASL: Added a message if a package initializer list is shorter than
4797 length. Adds a new remark for a Package() declaration if an initializer
4799 exists, but is shorter than the declared length of the package. Although
4800 technically legal, this is probably a coding error and it is seen in the
4801 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4803 iASL: Fixed a problem where the compiler could fault after the maximum
4805 of errors was reached (200).
4807 acpixtract: Fixed a possible warning for pointer cast if the compiler
4809 level set very high.
4811 ----------------------------------------
4812 13 October 2009. Summary of changes for version 20091013:
4814 1) ACPI CA Core Subsystem:
4816 Fixed a problem where an Operation Region _REG method could be executed
4818 than once. If a custom address space handler is installed by the host
4820 the "initialize operation regions" phase of the ACPICA initialization,
4822 _REG methods for that address space could be executed twice. This change
4823 fixes the problem. ACPICA BZ 427. Lin Ming.
4825 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4826 invocation of "Scope(\)" is executed (change scope to root), one internal
4827 operand object was leaked. Lin Ming.
4829 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4830 return value is defined as a Field object in the AML, and the field
4831 size is less than or equal to the default width of an integer (32 or
4833 can incorrectly return an Integer instead of a Buffer. ACPICA now
4834 automatically repairs this problem. ACPICA BZ 810.
4836 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4838 "OEM Information" field is often incorrectly returned as an Integer with
4839 value zero if the field is not supported by the platform. This is due to
4841 ambiguity in the ACPI specification. The field should always be a string.
4842 ACPICA now automatically repairs this problem by returning a NULL string
4843 within the returned Package. ACPICA BZ 807.
4845 Example Code and Data Size: These are the sizes for the OS-independent
4846 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4847 debug version of the code includes the debug output trace mechanism and
4849 much larger code and data size.
4852 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4853 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4855 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4856 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4858 2) iASL Compiler/Disassembler and Tools:
4860 Disassembler: Fixed a problem where references to external symbols that
4861 contained one or more parent-prefixes (carats) were not handled
4863 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4865 Disassembler: Restructured the code so that all functions that handle
4866 external symbols are in a single module. One new file is added,
4869 AML Debugger: Added a max count argument for the Batch command (which
4870 executes multiple predefined methods within the namespace.)
4872 iASL: Updated the compiler documentation (User Reference.) Available at
4873 http://www.acpica.org/documentation/. ACPICA BZ 750.
4875 AcpiXtract: Updated for Lint and other formatting changes. Close all open
4878 ----------------------------------------
4879 03 September 2009. Summary of changes for version 20090903:
4881 1) ACPI CA Core Subsystem:
4883 For Windows Vista compatibility, added the automatic execution of an _INI
4884 method located at the namespace root (\_INI). This method is executed at
4885 table load time. This support is in addition to the automatic execution
4887 \_SB._INI. Lin Ming.
4889 Fixed a possible memory leak in the interpreter for AML package objects
4891 the package initializer list is longer than the defined size of the
4893 This apparently can only happen if the BIOS changes the package size on
4895 fly (seen in a _PSS object), as ASL compilers do not allow this. The
4896 interpreter will truncate the package to the defined size (and issue an
4898 message), but previously could leave the extra objects undeleted if they
4900 pre-created during the argument processing (such is the case if the
4902 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
4904 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
4905 This has been reported in the field. Previously, ACPICA would zero out
4907 buffer/string. Now, the operation is treated as a noop. Provides Windows
4908 compatibility. ACPICA BZ 803. Lin Ming.
4910 Removed an extraneous error message for ASL constructs of the form
4911 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
4913 are seen in many BIOSs and are once again treated as NOOPs and no error
4915 emitted when they are encountered. ACPICA BZ 785.
4917 Fixed an extraneous warning message if a _DSM reserved method returns a
4918 Package object. _DSM can return any type of object, so validation on the
4919 return type cannot be performed. ACPICA BZ 802.
4921 Example Code and Data Size: These are the sizes for the OS-independent
4922 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4923 debug version of the code includes the debug output trace mechanism and
4925 much larger code and data size.
4928 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
4929 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
4931 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4932 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4934 2) iASL Compiler/Disassembler and Tools:
4936 iASL: Fixed a problem with the use of the Alias operator and Resource
4937 Templates. The correct alias is now constructed and no error is emitted.
4940 iASL: Implemented the -I option to specify additional search directories
4942 include files. Allows multiple additional search paths for include files.
4943 Directories are searched in the order specified on the command line
4945 the local directory is searched.) ACPICA BZ 800.
4947 iASL: Fixed a problem where the full pathname for include files was not
4948 emitted for warnings/errors. This caused the IDE support to not work
4949 properly. ACPICA BZ 765.
4951 iASL: Implemented the -@ option to specify a Windows-style response file
4952 containing additional command line options. ACPICA BZ 801.
4954 AcpiExec: Added support to load multiple AML files simultaneously (such
4957 DSDT and multiple SSDTs). Also added support for wildcards within the AML
4958 pathname. These features allow all machine tables to be easily loaded and
4959 debugged together. ACPICA BZ 804.
4961 Disassembler: Added missing support for disassembly of HEST table Error
4965 ----------------------------------------
4966 30 July 2009. Summary of changes for version 20090730:
4968 The ACPI 4.0 implementation for ACPICA is complete with this release.
4970 1) ACPI CA Core Subsystem:
4972 ACPI 4.0: Added header file support for all new and changed ACPI tables.
4973 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
4975 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
4977 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
4979 have been some ACPI 4.0 changes to other existing tables. Split the large
4980 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
4982 ACPI 4.0: Implemented predefined name validation for all new names. There
4984 31 new names in ACPI 4.0. The predefined validation module was split into
4986 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
4988 Implemented support for so-called "module-level executable code". This is
4989 executable AML code that exists outside of any control method and is
4991 to be executed at table load time. Although illegal since ACPI 2.0, this
4993 of code still exists and is apparently still being created. Blocks of
4995 code are now detected and executed as intended. Currently, the code
4997 must exist under either an If, Else, or While construct; these are the
4998 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
5000 Implemented an automatic dynamic repair for predefined names that return
5001 nested Package objects. This applies to predefined names that are defined
5003 return a variable-length Package of sub-packages. If the number of sub-
5004 packages is one, BIOS code is occasionally seen that creates a simple
5006 package with no sub-packages. This code attempts to fix the problem by
5007 wrapping a new package object around the existing package. These methods
5009 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
5013 Fixed a regression introduced in 20090625 for the AcpiGetDevices
5015 The _HID/_CID matching was broken and no longer matched IDs correctly.
5019 Fixed a problem with AcpiReset where the reset would silently fail if the
5020 register was one of the protected I/O ports. AcpiReset now bypasses the
5022 validation mechanism. This may eventually be driven into the
5026 Fixed a regression related to the recent update of the AcpiRead/Write
5027 interfaces. A sleep/suspend could fail if the optional PM2 Control
5029 does not exist during an attempt to write the Bus Master Arbitration bit.
5030 (However, some hosts already delete the code that writes this bit, and
5032 code may in fact be obsolete at this date.) ACPICA BZ 799.
5034 Fixed a problem where AcpiTerminate could fault if inadvertently called
5036 in succession. ACPICA BZ 795.
5038 Example Code and Data Size: These are the sizes for the OS-independent
5039 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5040 debug version of the code includes the debug output trace mechanism and
5042 much larger code and data size.
5045 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5046 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5048 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5049 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5051 2) iASL Compiler/Disassembler and Tools:
5053 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
5054 changes to existing tables. ACPICA BZ 775.
5056 ----------------------------------------
5057 25 June 2009. Summary of changes for version 20090625:
5059 The ACPI 4.0 Specification was released on June 16 and is available at
5060 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
5061 continue for the next few releases.
5063 1) ACPI CA Core Subsystem:
5065 ACPI 4.0: Implemented interpreter support for the IPMI operation region
5066 address space. Includes support for bi-directional data buffers and an
5068 address space handler (to be installed by an IPMI device driver.) ACPICA
5072 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
5074 support in both the header files and the disassembler.
5076 Completed a major update for the AcpiGetObjectInfo external interface.
5078 - Support for variable, unlimited length HID, UID, and CID strings.
5079 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
5081 - Call the _SxW power methods on behalf of a device object.
5082 - Determine if a device is a PCI root bridge.
5083 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
5084 These changes will require an update to all callers of this interface.
5086 the updated ACPICA Programmer Reference for details. One new source file
5088 been added - utilities/utids.c. ACPICA BZ 368, 780.
5090 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
5091 transfers. The Value parameter has been extended from 32 bits to 64 bits
5093 order to support new ACPI 4.0 tables. These changes will require an
5096 all callers of these interfaces. See the ACPICA Programmer Reference for
5097 details. ACPICA BZ 768.
5099 Fixed several problems with AcpiAttachData. The handler was not invoked
5101 the host node was deleted. The data sub-object was not automatically
5103 when the host node was deleted. The interface to the handler had an
5105 parameter, this was removed. ACPICA BZ 778.
5107 Enhanced the function that dumps ACPI table headers. All non-printable
5108 characters in the string fields are now replaced with '?' (Signature,
5110 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
5111 these fields are occasionally seen in the field. ACPICA BZ 788.
5113 Fixed a problem with predefined method repair code where the code that
5114 attempts to repair/convert an object of incorrect type is only executed
5116 the first time the predefined method is called. The mechanism that
5118 warnings on subsequent calls was interfering with the repair mechanism.
5121 Fixed a possible memory leak in the predefined validation/repair code
5124 buffer is automatically converted to an expected string object.
5126 Removed obsolete 16-bit files from the distribution and from the current
5128 tree head. ACPICA BZ 776.
5130 Example Code and Data Size: These are the sizes for the OS-independent
5131 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5132 debug version of the code includes the debug output trace mechanism and
5134 much larger code and data size.
5137 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5138 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5140 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5141 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5143 2) iASL Compiler/Disassembler and Tools:
5145 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
5146 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
5148 ACPI 4.0: iASL - implemented compile-time validation support for all new
5149 predefined names and control methods (31 total). ACPICA BZ 769.
5151 ----------------------------------------
5152 21 May 2009. Summary of changes for version 20090521:
5154 1) ACPI CA Core Subsystem:
5156 Disabled the preservation of the SCI enable bit in the PM1 control
5158 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
5161 a "preserved" bit - "OSPM always preserves this bit position", section
5162 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
5163 because the bit needs to be explicitly set by the OS as a workaround. No
5164 machines fail if the bit is not preserved. Therefore, ACPICA no longer
5165 attempts to preserve this bit.
5167 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
5168 incorrectly formed _PRT package could cause a fault. Added validation to
5169 ensure that each package element is actually a sub-package.
5171 Implemented a new interface to install or override a single control
5173 AcpiInstallMethod. This interface is useful when debugging in order to
5175 an existing method or to install a missing method without having to
5177 the entire ACPI table. See the ACPICA Programmer Reference for use and
5178 examples. Lin Ming, Bob Moore.
5180 Fixed several reference count issues with the DdbHandle object that is
5181 created from a Load or LoadTable operator. Prevent premature deletion of
5183 object. Also, mark the object as invalid once the table has been
5185 This is needed because the handle itself may not be deleted after the
5187 unload, depending on whether it has been stored in a named object by the
5190 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
5191 mutexes of the same sync level are acquired but then not released in
5193 opposite order, the internally maintained Current Sync Level becomes
5195 and can cause subsequent execution errors. ACPICA BZ 471.
5197 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
5198 specification has been changed to make the SyncLevel for mutex objects
5200 useful. When releasing a mutex, the SyncLevel of the mutex must now be
5202 same as the current sync level. This makes more sense than the previous
5204 (SyncLevel less than or equal). This change updates the code to match the
5207 Fixed a problem with the local version of the AcpiOsPurgeCache function.
5209 (local) cache must be locked during all cache object deletions. Andrew
5212 Updated the Load operator to use operation region interfaces. This
5214 direct memory mapping with region access calls. Now, all region accesses
5216 through the installed region handler as they should.
5218 Simplified and optimized the NsGetNextNode function. Reduced parameter
5220 and reduced code for this frequently used function.
5222 Example Code and Data Size: These are the sizes for the OS-independent
5223 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5224 debug version of the code includes the debug output trace mechanism and
5226 much larger code and data size.
5229 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5230 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5232 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5233 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5235 2) iASL Compiler/Disassembler and Tools:
5237 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
5239 with sub-table disassembly and handling invalid sub-tables. Attempt
5241 after an invalid sub-table ID.
5243 ----------------------------------------
5244 22 April 2009. Summary of changes for version 20090422:
5246 1) ACPI CA Core Subsystem:
5248 Fixed a compatibility issue with the recently released I/O port
5250 mechanism. For windows compatibility, 1) On a port protection violation,
5251 simply ignore the request and do not return an exception (allow the
5253 method to continue execution.) 2) If only part of the request overlaps a
5254 protected port, read/write the individual ports that are not protected.
5258 Enhanced the execution of the ASL/AML BreakPoint operator so that it
5260 breaks into the AML debugger if the debugger is present. This matches the
5261 ACPI-defined behavior.
5263 Fixed several possible warnings related to the use of the configurable
5264 ACPI_THREAD_ID. This type can now be configured as either an integer or a
5265 pointer with no warnings. Also fixes several warnings in printf-like
5266 statements for the 64-bit build when the type is configured as a pointer.
5269 Fixed a number of possible warnings when compiling with gcc 4+ (depending
5271 warning options.) Examples include printf formats, aliasing, unused
5273 missing prototypes, missing switch default statements, use of non-ANSI
5274 library functions, use of non-ANSI constructs. See generate/unix/Makefile
5276 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
5278 Example Code and Data Size: These are the sizes for the OS-independent
5279 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5280 debug version of the code includes the debug output trace mechanism and
5282 much larger code and data size.
5285 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5286 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5288 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5289 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5291 2) iASL Compiler/Disassembler and Tools:
5293 iASL: Fixed a generation warning from Bison 2.3 and fixed several
5298 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
5300 correctly digest Windows/DOS formatted files (with CR/LF).
5302 iASL: Added a new option for "quiet mode" (-va) that produces only the
5303 compilation summary, not individual errors and warnings. Useful for large
5306 AcpiExec: Implemented a new option (-z) to enable a forced
5308 timeout that can be used to detect hang conditions during execution of
5310 code (includes both internal semaphores and AML-defined mutexes and
5313 Added new makefiles for the generation of acpica in a generic unix-like
5314 environment. These makefiles are intended to generate the acpica tools
5316 utilities from the original acpica git source tree structure.
5318 Test Suites: Updated and cleaned up the documentation files. Updated the
5319 copyrights to 2009, affecting all source files. Use the new version of
5321 with quiet mode. Increased the number of available semaphores in the
5323 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
5325 an alternate implementation of the semaphore timeout to allow aslts to
5326 execute fully on Cygwin.
5328 ----------------------------------------
5329 20 March 2009. Summary of changes for version 20090320:
5331 1) ACPI CA Core Subsystem:
5333 Fixed a possible race condition between AcpiWalkNamespace and dynamic
5335 unloads. Added a reader/writer locking mechanism to allow multiple
5337 namespace walks (readers), but block a dynamic table unload until it can
5339 exclusive write access to the namespace. This fixes a problem where a
5341 unload could (possibly catastrophically) delete the portion of the
5343 that is currently being examined by a walk. Adds a new file, utlock.c,
5345 implements the reader/writer lock mechanism. ACPICA BZ 749.
5347 Fixed a regression introduced in version 20090220 where a change to the
5349 handling could cause the ACPICA subsystem to access non-existent I/O
5352 Modified the handling of FADT register and table (FACS/DSDT) addresses.
5354 FADT can contain both 32-bit and 64-bit versions of these addresses.
5355 Previously, the 64-bit versions were favored, meaning that if both 32 and
5357 versions were valid, but not equal, the 64-bit version was used. This was
5358 found to cause some machines to fail. Now, in this case, the 32-bit
5360 is used instead. This now matches the Windows behavior.
5362 Implemented a new mechanism to protect certain I/O ports. Provides
5364 compatibility and protects the standard PC I/O ports from access via AML
5365 code. Adds a new file, hwvalid.c
5367 Fixed a possible extraneous warning message from the FADT support. The
5368 message warns of a 32/64 length mismatch between the legacy and GAS
5369 definitions for a register.
5371 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
5373 made obsolete by the port protection mechanism above. It was previously
5375 to validate the entire address range of an operation region, which could
5377 incorrect if the range included illegal ports, but fields within the
5378 operation region did not actually access those ports. Validation is now
5379 performed on a per-field basis instead of the entire region.
5381 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
5382 Ignored bits must be "preserved" according to the ACPI spec. Usually,
5384 means a read/modify/write when writing to the register. However, for
5386 registers, writing a one means clear the event. Writing a zero means
5388 the event (do not clear.) This behavior is clarified in the ACPI 4.0
5390 and the ACPICA code now simply always writes a zero to the ignored bit.
5392 Modified the handling of ignored bits for the PM1 A/B Control Registers.
5394 per the ACPI specification, for the control registers, preserve
5395 (read/modify/write) all bits that are defined as either reserved or
5398 Updated the handling of write-only bits in the PM1 A/B Control Registers.
5399 When reading the register, zero the write-only bits as per the ACPI spec.
5400 ACPICA BZ 443. Lin Ming.
5402 Removed "Linux" from the list of supported _OSI strings. Linux no longer
5403 wants to reply true to this request. The Windows strings are the only
5405 through the AML that are tested and known to work properly.
5408 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5409 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5411 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5412 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5414 2) iASL Compiler/Disassembler and Tools:
5416 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
5420 ----------------------------------------
5421 20 February 2009. Summary of changes for version 20090220:
5423 1) ACPI CA Core Subsystem:
5425 Optimized the ACPI register locking. Removed locking for reads from the
5427 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
5429 not required when reading the single-bit registers. The
5430 AcpiGetRegisterUnlocked function is no longer needed and has been
5432 This will improve performance for reads on these registers. ACPICA BZ
5435 Fixed the parameter validation for AcpiRead/Write. Now return
5436 AE_BAD_PARAMETER if the input register pointer is null, and
5439 the register has an address of zero. Previously, these cases simply
5441 AE_OK. For optional registers such as PM1B status/enable/control, the
5443 should check for a valid register address before calling. ACPICA BZ 748.
5445 Renamed the external ACPI bit register access functions. Renamed
5446 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
5447 functions. The new names are AcpiReadBitRegister and
5448 AcpiWriteBitRegister.
5449 Also, restructured the code for these functions by simplifying the code
5451 and condensing duplicate code to reduce code size.
5453 Added new functions to transparently handle the possibly split PM1 A/B
5454 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
5456 now handle the split registers for PM1 Status, Enable, and Control.
5461 Added a function to handle the PM1 control registers,
5462 AcpiHwWritePm1Control.
5463 This function writes both of the PM1 control registers (A/B). These
5465 are different than the PM1 A/B status and enable registers in that
5467 values can be written to the A/B registers. Most notably, the SLP_TYP
5469 can be different, as per the values returned from the _Sx predefined
5472 Removed an extra register write within AcpiHwClearAcpiStatus. This
5474 was writing an optional PM1B status register twice. The existing call to
5476 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
5478 register. ACPICA BZ 751.
5480 Split out the PM1 Status registers from the FADT. Added new globals for
5482 registers (A/B), similar to the way the PM1 Enable registers are handled.
5483 Instead of overloading the FADT Event Register blocks. This makes the
5485 clearer and less prone to error.
5487 Fixed the warning message for when the platform contains too many ACPI
5489 for the default size of the global root table data structure. The
5491 for the truncation value was incorrect.
5493 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
5494 obsolete macro, since it is now a simple reference to ->common.type.
5496 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
5498 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
5499 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
5500 simply SLEEP_TYPE. ACPICA BZ 754.
5502 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
5503 function is only needed on 64-bit host operating systems and is thus not
5504 included for 32-bit hosts.
5506 Debug output: print the input and result for invocations of the _OSI
5508 control method via the ACPI_LV_INFO debug level. Also, reduced some of
5510 verbosity of this debug level. Len Brown.
5512 Example Code and Data Size: These are the sizes for the OS-independent
5513 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5514 debug version of the code includes the debug output trace mechanism and
5516 much larger code and data size.
5519 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5520 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5522 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5523 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5525 2) iASL Compiler/Disassembler and Tools:
5527 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
5528 various legal performance profiles.
5530 ----------------------------------------
5531 23 January 2009. Summary of changes for version 20090123:
5533 1) ACPI CA Core Subsystem:
5535 Added the 2009 copyright to all module headers and signons. This affects
5536 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5537 the tools/utilities.
5539 Implemented a change to allow the host to override any ACPI table,
5541 dynamically loaded tables. Previously, only the DSDT could be replaced by
5543 host. With this change, the AcpiOsTableOverride interface is called for
5545 table found in the RSDT/XSDT during ACPICA initialization, and also
5547 a table is dynamically loaded via the AML Load operator.
5549 Updated FADT flag definitions, especially the Boot Architecture flags.
5551 Debugger: For the Find command, automatically pad the input ACPI name
5553 underscores if the name is shorter than 4 characters. This enables a
5555 with the actual namespace entry which is itself padded with underscores.
5557 Example Code and Data Size: These are the sizes for the OS-independent
5558 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5559 debug version of the code includes the debug output trace mechanism and
5561 much larger code and data size.
5564 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5565 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5567 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5568 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5570 2) iASL Compiler/Disassembler and Tools:
5572 Fix build error under Bison-2.4.
5574 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5576 flags. Now decode all flags, regardless of the FADT version. Flag output
5577 includes the FADT version which first defined each flag.
5579 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5581 DSDT). Windows only.
5583 ----------------------------------------
5584 04 December 2008. Summary of changes for version 20081204:
5586 1) ACPI CA Core Subsystem:
5588 The ACPICA Programmer Reference has been completely updated and revamped
5590 this release. This includes updates to the external interfaces, OSL
5591 interfaces, the overview sections, and the debugger reference.
5593 Several new ACPICA interfaces have been implemented and documented in the
5594 programmer reference:
5595 AcpiReset - Writes the reset value to the FADT-defined reset register.
5596 AcpiDisableAllGpes - Disable all available GPEs.
5597 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5598 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5599 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5600 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5601 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5603 Most of the public ACPI hardware-related interfaces have been moved to a
5605 file, components/hardware/hwxface.c
5607 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5608 register lengths within the FADT are now used, and the low level ACPI
5609 register access no longer hardcodes the ACPI register lengths. Given that
5610 there may be some risk in actually trusting the FADT register lengths, a
5612 time option was added to fall back to the default hardcoded lengths if
5614 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5615 option is set to true for now, and a warning is issued if a suspicious
5617 register length is overridden with the default value.
5619 Fixed a reference count issue in NsRepairObject. This problem was
5621 in version 20081031 as part of a fix to repair Buffer objects within
5624 Added semaphore support to the Linux/Unix application OS-services layer
5625 (OSL). ACPICA BZ 448. Lin Ming.
5627 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5629 be implemented in the OSL, or will binary semaphores be used instead.
5631 Example Code and Data Size: These are the sizes for the OS-independent
5632 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5633 debug version of the code includes the debug output trace mechanism and
5635 much larger code and data size.
5638 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5639 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5641 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5642 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5644 2) iASL Compiler/Disassembler and Tools:
5646 iASL: Completed the '-e' option to include additional ACPI tables in
5649 aid with disassembly and External statement generation. ACPICA BZ 742.
5653 iASL: Removed the "named object in while loop" error. The compiler cannot
5654 determine how many times a loop will execute. ACPICA BZ 730.
5656 Disassembler: Implemented support for FADT revision 2 (MS extension).
5660 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5663 ----------------------------------------
5664 31 October 2008. Summary of changes for version 20081031:
5666 1) ACPI CA Core Subsystem:
5668 Restructured the ACPICA header files into public/private. acpi.h now
5670 only the "public" acpica headers. All other acpica headers are "private"
5672 should not be included by acpica users. One new file, accommon.h is used
5674 include the commonly used private headers for acpica code generation.
5676 plans include moving all private headers to a new subdirectory.
5678 Implemented an automatic Buffer->String return value conversion for
5679 predefined ACPI methods. For these methods (such as _BIF), added
5681 conversion for return objects that are required to be a String, but a
5683 was found instead. This can happen when reading string battery data from
5685 operation region, because it used to be difficult to convert the data
5687 buffer to string from within the ASL. Ensures that the host OS is
5689 with a valid null-terminated string. Linux BZ 11822.
5691 Updated the FACS waking vector interfaces. Split
5692 AcpiSetFirmwareWakingVector
5693 into two: one for the 32-bit vector, another for the 64-bit vector. This
5695 required because the host OS must setup the wake much differently for
5697 vector (real vs. protected mode, etc.) and the interface itself should
5700 deciding which vector to use. Also, eliminated the
5701 GetFirmwareWakingVector
5702 interface, as it served no purpose (only the firmware reads the vector,
5704 only writes the vector.) ACPICA BZ 731.
5706 Implemented a mechanism to escape infinite AML While() loops. Added a
5708 counter to force exit from AML While loops if the count becomes too
5710 This can occur in poorly written AML when the hardware does not respond
5711 within a while loop and the loop does not implement a timeout. The
5713 loop count is configurable. A new exception code is returned when a loop
5715 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5717 Optimized the execution of AML While loops. Previously, a control state
5718 object was allocated and freed for each execution of the loop. The
5719 optimization is to simply reuse the control state for each iteration.
5721 speeds up the raw loop execution time by about 5%.
5723 Enhanced the implicit return mechanism. For Windows compatibility, return
5725 implicit integer of value zero for methods that contain no executable
5727 Such methods are seen in the field as stubs (presumably), and can cause
5728 drivers to fail if they expect a return value. Lin Ming.
5730 Allow multiple backslashes as root prefixes in namepaths. In a fully
5731 qualified namepath, allow multiple backslash prefixes. This can happen
5733 is seen in the field) because of the use of a double-backslash in strings
5734 (since backslash is the escape character) causing confusion. ACPICA BZ
5738 Emit a warning if two different FACS or DSDT tables are discovered in the
5739 FADT. Checks if there are two valid but different addresses for the FACS
5741 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5743 Consolidated the method argument count validation code. Merged the code
5745 validates control method argument counts into the predefined validation
5746 module. Eliminates possible multiple warnings for incorrect argument
5749 Implemented ACPICA example code. Includes code for ACPICA initialization,
5750 handler installation, and calling a control method. Available at
5751 source/tools/examples.
5753 Added a global pointer for FACS table to simplify internal FACS access.
5755 the global pointer instead of using AcpiGetTableByIndex for each FACS
5757 This simplifies the code for the Global Lock and the Firmware Waking
5760 Example Code and Data Size: These are the sizes for the OS-independent
5761 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5762 debug version of the code includes the debug output trace mechanism and
5764 much larger code and data size.
5767 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5768 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5770 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5771 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5773 2) iASL Compiler/Disassembler and Tools:
5775 iASL: Improved disassembly of external method calls. Added the -e option
5777 allow the inclusion of additional ACPI tables to help with the
5780 method invocations and the generation of external declarations during the
5781 disassembly. Certain external method invocations cannot be disassembled
5782 properly without the actual declaration of the method. Use the -e option
5784 include the table where the external method(s) are actually declared.
5786 useful for disassembling SSDTs that make method calls back to the master
5787 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5789 -e dsdt.aml ssdt1.aml
5791 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5792 problem where the use of an alias within a namepath would result in a not
5793 found error or cause the compiler to fault. Also now allows forward
5794 references from the Alias operator itself. ACPICA BZ 738.
5796 ----------------------------------------
5797 26 September 2008. Summary of changes for version 20080926:
5799 1) ACPI CA Core Subsystem:
5801 Designed and implemented a mechanism to validate predefined ACPI methods
5803 objects. This code validates the predefined ACPI objects (objects whose
5805 start with underscore) that appear in the namespace, at the time they are
5806 evaluated. The argument count and the type of the returned object are
5807 validated against the ACPI specification. The purpose of this validation
5809 to detect problems with the BIOS-implemented predefined ACPI objects
5811 the results are returned to the ACPI-related drivers. Future enhancements
5813 include actual repair of incorrect return objects where possible. Two new
5814 files are nspredef.c and acpredef.h.
5816 Fixed a fault in the AML parser if a memory allocation fails during the
5818 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5820 Fixed an issue with implicit return compatibility. This change improves
5822 implicit return mechanism to be more compatible with the MS interpreter.
5824 Ming, ACPICA BZ 349.
5826 Implemented support for zero-length buffer-to-string conversions. Allow
5828 length strings during interpreter buffer-to-string conversions. For
5830 during the ToDecimalString and ToHexString operators, as well as implicit
5831 conversions. Fiodor Suietov, ACPICA BZ 585.
5833 Fixed two possible memory leaks in the error exit paths of
5834 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5836 similar in that they use a stack of state objects in order to eliminate
5837 recursion. The stack must be fully unwound and deallocated if an error
5838 occurs. Lin Ming. ACPICA BZ 383.
5840 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5842 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5843 Moore ACPICA BZ 442.
5845 Removed the obsolete version number in module headers. Removed the
5846 "$Revision" number that appeared in each module header. This version
5848 was useful under SourceSafe and CVS, but has no meaning under git. It is
5850 only incorrect, it could also be misleading.
5852 Example Code and Data Size: These are the sizes for the OS-independent
5853 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5854 debug version of the code includes the debug output trace mechanism and
5856 much larger code and data size.
5859 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5860 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5862 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5863 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5865 ----------------------------------------
5866 29 August 2008. Summary of changes for version 20080829:
5868 1) ACPI CA Core Subsystem:
5870 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5871 Reference. Changes include the elimination of cheating on the Object
5873 for the DdbHandle subtype, addition of a reference class field to
5874 differentiate the various reference types (instead of an AML opcode), and
5876 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
5878 Reduce an error to a warning for an incorrect method argument count.
5879 Previously aborted with an error if too few arguments were passed to a
5880 control method via the external ACPICA interface. Now issue a warning
5882 and continue. Handles the case where the method inadvertently declares
5884 many arguments, but does not actually use the extra ones. Applies mainly
5886 the predefined methods. Lin Ming. Linux BZ 11032.
5888 Disallow the evaluation of named object types with no intrinsic value.
5890 AE_TYPE for objects that have no value and therefore evaluation is
5892 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
5894 these types were allowed, but an exception would be generated at some
5896 during the evaluation. Now, the error is generated up front.
5898 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
5899 (nsnames.c). Fixes a leak in the error exit path.
5901 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
5903 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
5905 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
5908 Removed obsolete and/or unused exception codes from the acexcep.h header.
5909 There is the possibility that certain device drivers may be affected if
5911 use any of these exceptions.
5913 The ACPICA documentation has been added to the public git source tree,
5915 acpica/documents. Included are the ACPICA programmer reference, the iASL
5916 compiler reference, and the changes.txt release logfile.
5918 Example Code and Data Size: These are the sizes for the OS-independent
5919 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5920 debug version of the code includes the debug output trace mechanism and
5922 much larger code and data size.
5925 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5926 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
5928 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5929 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5931 2) iASL Compiler/Disassembler and Tools:
5933 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
5934 defines _SCP with 3 arguments. Previous versions defined it with only 1
5935 argument. iASL now allows both definitions.
5937 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
5939 length subtables when disassembling ACPI tables. Also fixed a couple of
5940 errors where a full 16-bit table type field was not extracted from the
5944 acpisrc: Improve comment counting mechanism for generating source code
5945 statistics. Count first and last lines of multi-line comments as
5947 not comment lines. Handle Linux legal header in addition to standard
5951 ----------------------------------------
5953 29 July 2008. Summary of changes for version 20080729:
5955 1) ACPI CA Core Subsystem:
5957 Fix a possible deadlock in the GPE dispatch. Remove call to
5958 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
5960 to acquire the GPE lock but can deadlock since the GPE lock is already
5962 at dispatch time. This code was introduced in version 20060831 as a
5964 to Linux BZ 6881 and has since been removed from Linux.
5966 Add a function to dereference returned reference objects. Examines the
5968 object from a call to AcpiEvaluateObject. Any Index or RefOf references
5970 automatically dereferenced in an attempt to return something useful
5972 reference types cannot be converted into an external ACPI_OBJECT.)
5974 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
5976 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
5977 subtables for the MADT and one new subtable for the SRAT. Includes
5978 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
5980 Specification, June 2008.
5982 Additional error checking for pathname utilities. Add error check after
5984 calls to AcpiNsGetPathnameLength. Add status return from
5985 AcpiNsBuildExternalPath and check after all calls. Add parameter
5987 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
5989 Return status from the global init function AcpiUtGlobalInitialize. This
5991 used by both the kernel subsystem and the utilities such as iASL
5993 The function could possibly fail when the caches are initialized. Yang
5996 Add a function to decode reference object types to strings. Created for
5997 improved error messages.
5999 Improve object conversion error messages. Better error messages during
6001 conversion from internal to the external ACPI_OBJECT. Used for external
6003 to AcpiEvaluateObject.
6005 Example Code and Data Size: These are the sizes for the OS-independent
6006 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6007 debug version of the code includes the debug output trace mechanism and
6009 much larger code and data size.
6012 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6013 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6015 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6016 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6018 2) iASL Compiler/Disassembler and Tools:
6020 Debugger: fix a possible hang when evaluating non-methods. Fixes a
6022 introduced in version 20080701. If the object being evaluated (via
6024 command) is not a method, the debugger can hang while trying to obtain
6026 existent parameters.
6028 iASL: relax error for using reserved "_T_x" identifiers. These names can
6029 appear in a disassembled ASL file if they were emitted by the original
6030 compiler. Instead of issuing an error or warning and forcing the user to
6031 manually change these names, issue a remark instead.
6033 iASL: error if named object created in while loop. Emit an error if any
6035 object is created within a While loop. If allowed, this code will
6038 run-time error on the second iteration of the loop when an attempt is
6041 create the same named object twice. ACPICA bugzilla 730.
6043 iASL: Support absolute pathnames for include files. Add support for
6045 pathnames within the Include operator. previously, only relative
6049 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
6051 The ACPI spec requires one interrupt minimum. BZ 423
6053 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
6054 Handles the case for the Interrupt Resource Descriptor where
6055 the ResourceSource argument is omitted but ResourceSourceIndex
6056 is present. Now leave room for the Index. BZ 426
6058 iASL: Prevent error message if CondRefOf target does not exist. Fixes
6060 where an error message is emitted if the target does not exist. BZ 516
6062 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
6063 (get ACPI tables on Windows). This was apparently broken in version
6066 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
6068 the EOF happens immediately after the last table in the input file. Print
6069 completion message. Previously, no message was displayed in this case.
6071 ----------------------------------------
6072 01 July 2008. Summary of changes for version 20080701:
6074 0) Git source tree / acpica.org
6076 Fixed a problem where a git-clone from http would not transfer the entire
6079 1) ACPI CA Core Subsystem:
6081 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
6082 enable bit. Now performs a read-change-write of the enable register
6084 of simply writing out the cached enable mask. This will prevent
6086 enabling of GPEs if a rogue GPE is received during initialization (before
6088 handlers are installed.)
6090 Implemented a copy for dynamically loaded tables. Previously, dynamically
6091 loaded tables were simply mapped - but on some machines this memory is
6092 corrupted after suspend. Now copy the table to a local buffer. For the
6093 OpRegion case, added checksum verify. Use the table length from the table
6094 header, not the region length. For the Buffer case, use the table length
6095 also. Dennis Noordsij, Bob Moore. BZ 10734
6097 Fixed a problem where the same ACPI table could not be dynamically loaded
6099 unloaded more than once. Without this change, a table cannot be loaded
6101 once it has been loaded/unloaded one time. The current mechanism does not
6102 unregister a table upon an unload. During a load, if the same table is
6104 this no longer returns an exception. BZ 722
6106 Fixed a problem where the wrong descriptor length was calculated for the
6107 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
6109 are calculated as 12 bytes long, but the actual length in the internal
6110 descriptor is 16 because of the round-up to 8 on the 64-bit build.
6112 by Linn Crosetto. BZ 728
6114 Fixed a possible memory leak in the Unload operator. The DdbHandle
6116 by Load() did not have its reference count decremented during unload,
6118 to a memory leak. Lin Ming. BZ 727
6120 Fixed a possible memory leak when deleting thermal/processor objects. Any
6121 associated notify handlers (and objects) were not being deleted. Fiodor
6124 Fixed the ordering of the ASCII names in the global mutex table to match
6126 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
6128 Vegard Nossum. BZ 726
6130 Enhanced the AcpiGetObjectInfo interface to return the number of required
6131 arguments if the object is a control method. Added this call to the
6133 so the proper number of default arguments are passed to a method. This
6134 prevents a warning when executing methods from AcpiExec.
6136 Added a check for an invalid handle in AcpiGetObjectInfo. Return
6137 AE_BAD_PARAMETER if input handle is invalid. BZ 474
6139 Fixed an extraneous warning from exconfig.c on the 64-bit build.
6141 Example Code and Data Size: These are the sizes for the OS-independent
6142 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6143 debug version of the code includes the debug output trace mechanism and
6145 much larger code and data size.
6148 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6149 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6151 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6152 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6154 2) iASL Compiler/Disassembler and Tools:
6156 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
6157 resource descriptor names.
6159 iASL: Detect invalid ASCII characters in input (windows version). Removed
6161 "-CF" flag from the flex compile, enables correct detection of non-ASCII
6162 characters in the input. BZ 441
6164 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
6166 "result of operation not used" warning when the DDB handle returned from
6167 LoadTable is not used. The warning is not needed. BZ 590
6169 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
6172 pass address of table to the AML. Added option to disable OpRegion
6174 to allow creation of an OpRegion with a real address that was passed to
6176 All of this allows testing of the Load and Unload operators from
6179 Debugger: update tables command for unloaded tables. Handle unloaded
6181 and use the standard table header output routine.
6183 ----------------------------------------
6184 09 June 2008. Summary of changes for version 20080609:
6186 1) ACPI CA Core Subsystem:
6188 Implemented a workaround for reversed _PRT entries. A significant number
6190 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
6191 change dynamically detects and repairs this problem. Provides
6193 with MS ACPI. BZ 6859
6195 Simplified the internal ACPI hardware interfaces to eliminate the locking
6196 flag parameter from Register Read/Write. Added a new external interface,
6197 AcpiGetRegisterUnlocked.
6199 Fixed a problem where the invocation of a GPE control method could hang.
6201 was a regression introduced in 20080514. The new method argument count
6202 validation mechanism can enter an infinite loop when a GPE method is
6203 dispatched. Problem fixed by removing the obsolete code that passed GPE
6205 information to the notify handler via the control method parameter
6208 Fixed a problem where the _SST execution status was incorrectly returned
6210 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
6212 20080514. _SST is optional and a NOT_FOUND exception should never be
6215 Fixed a problem where a deleted object could be accessed from within the
6217 parser. This was a regression introduced in version 20080123 as a fix for
6219 Unload operator. Lin Ming. BZ 10669
6221 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
6223 and eliminated the use of a negative index in a loop. Operands are now
6224 displayed in the correct order, not backwards. This also fixes a
6226 introduced in 20080514 on 64-bit systems where the elimination of
6227 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
6230 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
6232 path did not delete a locally allocated structure.
6234 Updated definitions for the DMAR and SRAT tables to synchronize with the
6235 current specifications. Includes disassembler support.
6237 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
6238 loop termination value was used. Loop terminated on iteration early,
6240 one mutex. Linn Crosetto
6242 Example Code and Data Size: These are the sizes for the OS-independent
6243 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6244 debug version of the code includes the debug output trace mechanism and
6246 much larger code and data size.
6249 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6250 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6252 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6253 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6255 2) iASL Compiler/Disassembler and Tools:
6257 Disassembler: Implemented support for EisaId() within _CID objects. Now
6258 disassemble integer _CID objects back to EisaId invocations, including
6259 multiple integers within _CID packages. Includes single-step support for
6262 Disassembler: Added support for DMAR and SRAT table definition changes.
6264 ----------------------------------------
6265 14 May 2008. Summary of changes for version 20080514:
6267 1) ACPI CA Core Subsystem:
6269 Fixed a problem where GPEs were enabled too early during the ACPICA
6270 initialization. This could lead to "handler not installed" errors on some
6271 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
6273 ensures that all operation regions and devices throughout the namespace
6275 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
6277 Implemented a change to the enter sleep code. Moved execution of the _GTS
6278 method to just before setting sleep enable bit. The execution was moved
6280 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
6281 immediately before the SLP_EN bit is set, as per the ACPI specification.
6284 Implemented a fix to disable unknown GPEs (2nd version). Now always
6286 the GPE, even if ACPICA thinks that that it is already disabled. It is
6287 possible that the AML or some other code has enabled the GPE unbeknownst
6291 Fixed a problem with the Field operator where zero-length fields would
6293 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
6295 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
6297 Implemented a fix for the Load operator, now load the table at the
6299 root. This reverts a change introduced in version 20071019. The table is
6301 loaded at the namespace root even though this goes against the ACPI
6302 specification. This provides compatibility with other ACPI
6304 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
6307 Fixed a problem where ACPICA would not Load() tables with unusual
6309 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
6310 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
6311 Therefore, signature validation is worthless. Apparently MS ACPI accepts
6313 signatures, ACPICA must be compatible. BZ 10454.
6315 Fixed a possible negative array index in AcpiUtValidateException. Added
6317 fields to the exception string arrays to eliminate a -1 subtraction on
6321 Updated the debug tracking macros to reduce overall code and data size.
6322 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
6323 instead of pointers to static strings. Jan Beulich and Bob Moore.
6325 Implemented argument count checking in control method invocation via
6326 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
6328 many. This applies only to extern programmatic control method execution,
6330 method-to-method calls within the AML. Lin Ming.
6332 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
6334 longer needed, especially with the removal of 16-bit support. It was
6336 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
6339 32/64-bit platforms is required.
6341 Added the C const qualifier for appropriate string constants -- mostly
6342 MODULE_NAME and printf format strings. Jan Beulich.
6344 Example Code and Data Size: These are the sizes for the OS-independent
6345 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6346 debug version of the code includes the debug output trace mechanism and
6348 much larger code and data size.
6351 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6352 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6354 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6355 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6357 2) iASL Compiler/Disassembler and Tools:
6359 Implemented ACPI table revision ID validation in the disassembler. Zero
6361 always invalid. For DSDTs, the ID controls the interpreter integer width.
6363 means 32-bit and this is unusual. 2 or greater is 64-bit.
6365 ----------------------------------------
6366 21 March 2008. Summary of changes for version 20080321:
6368 1) ACPI CA Core Subsystem:
6370 Implemented an additional change to the GPE support in order to suppress
6371 spurious or stray GPEs. The AcpiEvDisableGpe function will now
6373 disable incoming GPEs that are neither enabled nor disabled -- meaning
6375 the GPE is unknown to the system. This should prevent future interrupt
6377 from that GPE. BZ 6217 (Zhang Rui)
6379 Fixed a problem where NULL package elements were not returned to the
6380 AcpiEvaluateObject interface correctly. The element was simply ignored
6381 instead of returning a NULL ACPI_OBJECT package element, potentially
6383 a buffer overflow and/or confusing the caller who expected a fixed number
6385 elements. BZ 10132 (Lin Ming, Bob Moore)
6387 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
6389 Qword), Field, BankField, and IndexField operators when invoked from
6391 an executing control method. In this case, these operators created
6393 nodes that were incorrectly left marked as permanent nodes instead of
6394 temporary nodes. This could cause a problem if there is race condition
6395 between an exiting control method and a running namespace walk. (Reported
6399 Fixed a problem where the CreateField and CreateXXXField operators would
6400 incorrectly allow duplicate names (the name of the field) with no
6404 Implemented several changes for Notify handling. Added support for new
6406 values (ACPI 2.0+) and improved the Notify debug output. Notify on
6407 PowerResource objects is no longer allowed, as per the ACPI
6409 (Bob Moore, Zhang Rui)
6411 All Reference Objects returned via the AcpiEvaluateObject interface are
6413 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
6415 NULL objects - either NULL package elements or unresolved named
6418 Fixed a problem where an extraneous debug message was produced for
6420 objects (when debugging enabled). The message "Package List length larger
6421 than NumElements count" is now produced in the correct case, and is now
6423 error message rather than a debug message. Added a debug message for the
6424 opposite case, where NumElements is larger than the Package List (the
6426 will be padded out with NULL elements as per the ACPI spec.)
6428 Implemented several improvements for the output of the ASL "Debug" object
6430 clarify and keep all data for a given object on one output line.
6432 Fixed two size calculation issues with the variable-length Start
6434 resource descriptor.
6436 Example Code and Data Size: These are the sizes for the OS-independent
6437 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6438 debug version of the code includes the debug output trace mechanism and
6440 a much larger code and data size.
6443 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6444 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6446 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6447 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6449 2) iASL Compiler/Disassembler and Tools:
6451 Fixed a problem with the use of the Switch operator where execution of
6453 containing method by multiple concurrent threads could cause an
6454 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
6455 actual Switch opcode, it must be simulated with local named temporary
6456 variables and if/else pairs. The solution chosen was to mark any method
6458 uses Switch as Serialized, thus preventing multiple thread entries. BZ
6461 ----------------------------------------
6462 13 February 2008. Summary of changes for version 20080213:
6464 1) ACPI CA Core Subsystem:
6466 Implemented another MS compatibility design change for GPE/Notify
6468 GPEs are now cleared/enabled asynchronously to allow all pending notifies
6470 complete first. It is expected that the OSL will queue the enable request
6471 behind all pending notify requests (may require changes to the local host
6473 in AcpiOsExecute). Alexey Starikovskiy.
6475 Fixed a problem where buffer and package objects passed as arguments to a
6476 control method via the external AcpiEvaluateObject interface could cause
6478 AE_AML_INTERNAL exception depending on the order and type of operators
6479 executed by the target control method.
6481 Fixed a problem where resource descriptor size optimization could cause a
6482 problem when a _CRS resource template is passed to a _SRS method. The
6484 resource template must use the same descriptors (with the same size) as
6485 returned from _CRS. This change affects the following resource
6487 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
6490 Fixed a problem where a CopyObject to RegionField, BankField, and
6492 objects did not perform an implicit conversion as it should. These types
6494 retain their initial type permanently as per the ACPI specification.
6496 a CopyObject to all other object types should not perform an implicit
6497 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
6499 Fixed a problem with the AcpiGetDevices interface where the mechanism to
6500 match device CIDs did not examine the entire list of available CIDs, but
6501 instead aborted on the first non-matching CID. Andrew Patterson.
6503 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
6505 inadvertently changed to return a 16-bit value instead of a 32-bit value,
6506 truncating the upper dword of a 64-bit value. This macro is only used to
6507 display debug output, so no incorrect calculations were made. Also,
6508 reimplemented the macro so that a 64-bit shift is not performed by
6509 inefficient compilers.
6511 Added missing va_end statements that should correspond with each va_start
6514 Example Code and Data Size: These are the sizes for the OS-independent
6515 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6516 debug version of the code includes the debug output trace mechanism and
6518 a much larger code and data size.
6521 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6522 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6524 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6525 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6527 2) iASL Compiler/Disassembler and Tools:
6529 Implemented full disassembler support for the following new ACPI tables:
6530 BERT, EINJ, and ERST. Implemented partial disassembler support for the
6531 complicated HEST table. These tables support the Windows Hardware Error
6532 Architecture (WHEA).
6534 ----------------------------------------
6535 23 January 2008. Summary of changes for version 20080123:
6537 1) ACPI CA Core Subsystem:
6539 Added the 2008 copyright to all module headers and signons. This affects
6540 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6541 the tools/utilities.
6543 Fixed a problem with the SizeOf operator when used with Package and
6545 objects. These objects have deferred execution for some arguments, and
6547 execution is now completed before the SizeOf is executed. This problem
6549 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6553 Implemented an enhancement to the interpreter "slack mode". In the
6556 an explicit return or an implicitly returned object from the last
6558 opcode, a control method will now implicitly return an integer of value 0
6560 Microsoft compatibility. (Lin Ming) BZ 392
6562 Fixed a problem with the Load operator where an exception was not
6565 the case where the table is already loaded. (Lin Ming) BZ 463
6567 Implemented support for the use of DDBHandles as an Indexed Reference, as
6569 the ACPI spec. (Lin Ming) BZ 486
6571 Implemented support for UserTerm (Method invocation) for the Unload
6573 as per the ACPI spec. (Lin Ming) BZ 580
6575 Fixed a problem with the LoadTable operator where the OemId and
6577 input strings could cause unexpected failures if they were shorter than
6579 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6581 Implemented support for UserTerm (Method invocation) for the Unload
6583 as per the ACPI spec. (Lin Ming) BZ 580
6585 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6587 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6589 Example Code and Data Size: These are the sizes for the OS-independent
6590 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6591 debug version of the code includes the debug output trace mechanism and
6593 a much larger code and data size.
6596 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6597 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6599 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6600 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6602 2) iASL Compiler/Disassembler and Tools:
6604 Implemented support in the disassembler for checksum validation on
6606 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6608 header dump at the start of the disassembly.
6610 Implemented additional debugging information in the namespace listing
6612 created during compilation. In addition to the namespace hierarchy, the
6614 pathname to each namespace object is displayed.
6616 Fixed a problem with the disassembler where invalid ACPI tables could
6618 faults or infinite loops.
6620 Fixed an unexpected parse error when using the optional "parameter types"
6621 list in a control method declaration. (Lin Ming) BZ 397
6623 Fixed a problem where two External declarations with the same name did
6625 cause an error (Lin Ming) BZ 509
6627 Implemented support for full TermArgs (adding Argx, Localx and method
6628 invocation) for the ParameterData parameter to the LoadTable operator.
6632 ----------------------------------------
6633 19 December 2007. Summary of changes for version 20071219:
6635 1) ACPI CA Core Subsystem:
6637 Implemented full support for deferred execution for the TermArg string
6638 arguments for DataTableRegion. This enables forward references and full
6639 operand resolution for the three string arguments. Similar to
6641 deferred argument execution.) Lin Ming. BZ 430
6643 Implemented full argument resolution support for the BankValue argument
6645 BankField. Previously, only constants were supported, now any TermArg may
6647 used. Lin Ming BZ 387, 393
6649 Fixed a problem with AcpiGetDevices where the search of a branch of the
6650 device tree could be terminated prematurely. In accordance with the ACPI
6651 specification, the search down the current branch is terminated if a
6653 is both not present and not functional (instead of just not present.)
6657 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6659 the underlying AML code changed the GPE enable registers. Now, any
6661 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6663 instead of simply ignored. Rui Zhang.
6665 Fixed a problem with Index Fields where the Index register was
6667 limited to a maximum of 32 bits. Now any size may be used.
6669 Fixed a couple memory leaks associated with "implicit return" objects
6671 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6673 Example Code and Data Size: These are the sizes for the OS-independent
6674 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6675 debug version of the code includes the debug output trace mechanism and
6677 a much larger code and data size.
6680 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6681 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6683 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6684 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6686 ----------------------------------------
6687 14 November 2007. Summary of changes for version 20071114:
6689 1) ACPI CA Core Subsystem:
6691 Implemented event counters for each of the Fixed Events, the ACPI SCI
6692 (interrupt) itself, and control methods executed. Named
6693 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6695 should be useful for debugging and statistics.
6697 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6698 contents of the various event counters. Returns the current values for
6699 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6700 AcpiMethodCount. The interface can be expanded in the future if new
6702 are added. Device drivers should use this interface rather than access
6706 Fixed a problem with the FromBCD and ToBCD operators. With some
6708 the ShortDivide function worked incorrectly, causing problems with the
6710 functions with large input values. A truncation from 64-bit to 32-bit
6711 inadvertently occurred. Internal BZ 435. Lin Ming
6713 Fixed a problem with Index references passed as method arguments.
6715 passed as arguments to control methods were dereferenced immediately
6717 control was passed to the called method). The references are now
6719 passed directly to the called method. BZ 5389. Lin Ming
6721 Fixed a problem with CopyObject used in conjunction with the Index
6723 The reference was incorrectly dereferenced before the copy. The reference
6725 now correctly copied. BZ 5391. Lin Ming
6727 Fixed a problem with Control Method references within Package objects.
6729 references are now correctly generated. This completes the package
6730 construction overhaul that began in version 20071019.
6732 Example Code and Data Size: These are the sizes for the OS-independent
6733 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6734 debug version of the code includes the debug output trace mechanism and
6736 a much larger code and data size.
6739 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6740 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6742 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6743 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6746 2) iASL Compiler/Disassembler and Tools:
6748 The AcpiExec utility now installs handlers for all of the predefined
6749 Operation Region types. New types supported are: PCI_Config, CMOS, and
6752 Fixed a problem with the 64-bit version of AcpiExec where the extended
6754 bit) address fields for the DSDT and FACS within the FADT were not being
6755 used, causing truncation of the upper 32-bits of these addresses. Lin
6759 ----------------------------------------
6760 19 October 2007. Summary of changes for version 20071019:
6762 1) ACPI CA Core Subsystem:
6764 Fixed a problem with the Alias operator when the target of the alias is a
6765 named ASL operator that opens a new scope -- Scope, Device,
6767 Processor, and ThermalZone. In these cases, any children of the original
6768 operator could not be accessed via the alias, potentially causing
6770 AE_NOT_FOUND exceptions. (BZ 9067)
6772 Fixed a problem with the Package operator where all named references were
6773 created as object references and left otherwise unresolved. According to
6775 ACPI specification, a Package can only contain Data Objects or references
6777 control methods. The implication is that named references to Data Objects
6778 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6779 immediately upon package creation. This is the approach taken with this
6780 change. References to all other named objects (Methods, Devices, Scopes,
6781 etc.) are all now properly created as reference objects. (BZ 5328)
6783 Reverted a change to Notify handling that was introduced in version
6784 20070508. This version changed the Notify handling from asynchronous to
6785 fully synchronous (Device driver Notify handling with respect to the
6787 ASL operator). It was found that this change caused more problems than it
6788 solved and was removed by most users.
6790 Fixed a problem with the Increment and Decrement operators where the type
6792 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6795 Fixed a problem with the Load and LoadTable operators where the table
6796 location within the namespace was ignored. Instead, the table was always
6797 loaded into the root or current scope. Lin Ming.
6799 Fixed a problem with the Load operator when loading a table from a buffer
6800 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6802 Fixed a problem with the Debug object where a store of a DdbHandle
6804 object to the Debug object could cause a fault.
6806 Added a table checksum verification for the Load operator, in the case
6808 the load is from a buffer. (BZ 578).
6810 Implemented additional parameter validation for the LoadTable operator.
6812 length of the input strings SignatureString, OemIdString, and OemTableId
6814 now checked for maximum lengths. (BZ 582) Lin Ming.
6816 Example Code and Data Size: These are the sizes for the OS-independent
6817 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6818 debug version of the code includes the debug output trace mechanism and
6820 a much larger code and data size.
6823 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6824 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6826 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6827 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6830 2) iASL Compiler/Disassembler:
6832 Fixed a problem where if a single file was specified and the file did not
6833 exist, no error message was emitted. (Introduced with wildcard support in
6836 ----------------------------------------
6837 19 September 2007. Summary of changes for version 20070919:
6839 1) ACPI CA Core Subsystem:
6841 Designed and implemented new external interfaces to install and remove
6842 handlers for ACPI table-related events. Current events that are defined
6844 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6845 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6846 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6848 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6849 (acpi_serialized option on Linux) could cause some systems to hang during
6850 initialization. (Bob Moore) BZ 8171
6852 Fixed a problem where objects of certain types (Device, ThermalZone,
6853 Processor, PowerResource) can be not found if they are declared and
6854 referenced from within the same control method (Lin Ming) BZ 341
6856 Example Code and Data Size: These are the sizes for the OS-independent
6857 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6858 debug version of the code includes the debug output trace mechanism and
6860 a much larger code and data size.
6863 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6864 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6866 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6867 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6870 2) iASL Compiler/Disassembler:
6872 Implemented support to allow multiple files to be compiled/disassembled
6875 single invocation. This includes command line wildcard support for both
6877 Windows and Unix versions of the compiler. This feature simplifies the
6878 disassembly and compilation of multiple ACPI tables in a single
6881 ----------------------------------------
6882 08 May 2007. Summary of changes for version 20070508:
6884 1) ACPI CA Core Subsystem:
6886 Implemented a Microsoft compatibility design change for the handling of
6888 Notify AML operator. Previously, notify handlers were dispatched and
6889 executed completely asynchronously in a deferred thread. The new design
6890 still executes the notify handlers in a different thread, but the
6892 thread that executed the Notify() now waits at a synchronization point
6894 the notify handler to complete. Some machines depend on a synchronous
6896 operator in order to operate correctly.
6898 Implemented support to allow Package objects to be passed as method
6899 arguments to the external AcpiEvaluateObject interface. Previously, this
6900 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
6901 implemented since there were no reserved control methods that required it
6904 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
6906 contained invalid non-zero values in reserved fields could cause later
6907 failures because these fields have meaning in later revisions of the
6909 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
6911 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
6913 Fixed a problem where the Global Lock handle was not properly updated if
6915 thread that acquired the Global Lock via executing AML code then
6917 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
6921 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
6922 could be corrupted if the interrupt being removed was at the head of the
6923 list. Reported by Linn Crosetto.
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: 78.0K Code, 17.1K Data, 95.1K Total
6933 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
6935 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6936 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6938 ----------------------------------------
6939 20 March 2007. Summary of changes for version 20070320:
6941 1) ACPI CA Core Subsystem:
6943 Implemented a change to the order of interpretation and evaluation of AML
6944 operand objects within the AML interpreter. The interpreter now evaluates
6945 operands in the order that they appear in the AML stream (and the
6946 corresponding ASL code), instead of in the reverse order (after the
6948 operand list has been parsed). The previous behavior caused several
6950 incompatibilities with the Microsoft AML interpreter as well as being
6951 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
6953 Implemented a change to the ACPI Global Lock support. All interfaces to
6955 global lock now allow the same thread to acquire the lock multiple times.
6956 This affects the AcpiAcquireGlobalLock external interface to the global
6958 as well as the internal use of the global lock to support AML fields -- a
6959 control method that is holding the global lock can now simultaneously
6961 AML fields that require global lock protection. Previously, in both
6963 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
6965 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
6966 Controller. There is no change to the behavior of the AML Acquire
6968 as this can already be used to acquire a mutex multiple times by the same
6969 thread. BZ 8066. With assistance from Alexey Starikovskiy.
6971 Fixed a problem where invalid objects could be referenced in the AML
6972 Interpreter after error conditions. During operand evaluation, ensure
6974 the internal "Return Object" field is cleared on error and only valid
6975 pointers are stored there. Caused occasional access to deleted objects
6977 resulted in "large reference count" warning messages. Valery Podrezov.
6979 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
6981 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
6984 Fixed an internal problem with the handling of result objects on the
6985 interpreter result stack. BZ 7872. Valery Podrezov.
6987 Removed obsolete code that handled the case where AML_NAME_OP is the
6989 of a reference (Reference.Opcode). This code was no longer necessary. BZ
6990 7874. Valery Podrezov.
6992 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
6995 remnant from the previously discontinued 16-bit support.
6997 Example Code and Data Size: These are the sizes for the OS-independent
6998 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6999 debug version of the code includes the debug output trace mechanism and
7001 a much larger code and data size.
7004 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7005 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7007 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7008 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7010 ----------------------------------------
7011 26 January 2007. Summary of changes for version 20070126:
7013 1) ACPI CA Core Subsystem:
7015 Added the 2007 copyright to all module headers and signons. This affects
7016 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7019 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
7020 during a table load. A bad pointer was passed in the case where the DSDT
7022 overridden, causing a fault in this case.
7024 Example Code and Data Size: These are the sizes for the OS-independent
7025 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7026 debug version of the code includes the debug output trace mechanism and
7028 a much larger code and data size.
7031 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7032 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7034 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7035 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7037 ----------------------------------------
7038 15 December 2006. Summary of changes for version 20061215:
7040 1) ACPI CA Core Subsystem:
7042 Support for 16-bit ACPICA has been completely removed since it is no
7044 necessary and it clutters the code. All 16-bit macros, types, and
7045 conditional compiles have been removed, cleaning up and simplifying the
7047 across the entire subsystem. DOS support is no longer needed since the
7048 bootable Linux firmware kit is now available.
7050 The handler for the Global Lock is now removed during AcpiTerminate to
7051 enable a clean subsystem restart, via the implementation of the
7052 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
7055 Implemented enhancements to the multithreading support within the
7057 to enable improved multithreading debugging and evaluation of the
7061 Debugger: Enhanced the Statistics/Memory command to emit the total
7063 memory used during the execution, as well as the maximum memory consumed
7065 each of the various object types. (Valery Podrezov)
7067 Example Code and Data Size: These are the sizes for the OS-independent
7068 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7069 debug version of the code includes the debug output trace mechanism and
7071 a much larger code and data size.
7074 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7075 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7077 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7078 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7081 2) iASL Compiler/Disassembler and Tools:
7083 AcpiExec: Implemented a new option (-m) to display full memory use
7084 statistics upon subsystem/program termination. (Valery Podrezov)
7086 ----------------------------------------
7087 09 November 2006. Summary of changes for version 20061109:
7089 1) ACPI CA Core Subsystem:
7091 Optimized the Load ASL operator in the case where the source operand is
7093 operation region. Simply map the operation region memory, instead of
7094 performing a bytewise read. (Region must be of type SystemMemory, see
7097 Fixed the Load ASL operator for the case where the source operand is a
7098 region field. A buffer object is also allowed as the source operand. BZ
7101 Fixed a problem where the Load ASL operator allowed the source operand to
7103 an operation region of any type. It is now restricted to regions of type
7104 SystemMemory, as per the ACPI specification. BZ 481
7106 Additional cleanup and optimizations for the new Table Manager code.
7108 AcpiEnable will now fail if all of the required ACPI tables are not
7110 (FADT, FACS, DSDT). BZ 477
7112 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
7114 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
7115 manually optimized to be aligned and will not work if it is byte-packed.
7117 Example Code and Data Size: These are the sizes for the OS-independent
7118 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7119 debug version of the code includes the debug output trace mechanism and
7121 a much larger code and data size.
7124 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7125 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7127 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7128 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7131 2) iASL Compiler/Disassembler and Tools:
7133 Fixed a problem where the presence of the _OSI predefined control method
7134 within complex expressions could cause an internal compiler error.
7136 AcpiExec: Implemented full region support for multiple address spaces.
7137 SpaceId is now part of the REGION object. BZ 429
7139 ----------------------------------------
7140 11 October 2006. Summary of changes for version 20061011:
7142 1) ACPI CA Core Subsystem:
7144 Completed an AML interpreter performance enhancement for control method
7145 execution. Previously a 2-pass parse/execution, control methods are now
7146 completely parsed and executed in a single pass. This improves overall
7147 interpreter performance by ~25%, reduces code size, and reduces CPU stack
7148 use. (Valery Podrezov + interpreter changes in version 20051202 that
7149 eliminated namespace loading during the pass one parse.)
7151 Implemented _CID support for PCI Root Bridge detection. If the _HID does
7153 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
7155 obtained and also checked for an ID match.
7157 Implemented additional support for the PCI _ADR execution: upsearch until
7159 device scope is found before executing _ADR. This allows PCI_Config
7160 operation regions to be declared locally within control methods
7164 Fixed a problem with a possible race condition between threads executing
7165 AcpiWalkNamespace and the AML interpreter. This condition was removed by
7166 modifying AcpiWalkNamespace to (by default) ignore all temporary
7168 entries created during any concurrent control method execution. An
7169 additional namespace race condition is known to exist between
7170 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
7173 Restructured the AML ParseLoop function, breaking it into several
7174 subfunctions in order to reduce CPU stack use and improve
7178 AcpiGetHandle: Fix for parameter validation to detect invalid
7180 of prefix handle and pathname. BZ 478
7182 Example Code and Data Size: These are the sizes for the OS-independent
7183 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7184 debug version of the code includes the debug output trace mechanism and
7186 a much larger code and data size.
7189 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7190 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7192 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7193 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7195 2) iASL Compiler/Disassembler and Tools:
7197 Ported the -g option (get local ACPI tables) to the new ACPICA Table
7199 to restore original behavior.
7201 ----------------------------------------
7202 27 September 2006. Summary of changes for version 20060927:
7204 1) ACPI CA Core Subsystem:
7206 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
7207 These functions now use a spinlock for mutual exclusion and the interrupt
7208 level indication flag is not needed.
7210 Fixed a problem with the Global Lock where the lock could appear to be
7211 obtained before it is actually obtained. The global lock semaphore was
7212 inadvertently created with one unit instead of zero units. (BZ 464)
7216 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
7218 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
7220 Example Code and Data Size: These are the sizes for the OS-independent
7221 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7222 debug version of the code includes the debug output trace mechanism and
7224 a much larger code and data size.
7227 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7228 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7230 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7231 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7234 2) iASL Compiler/Disassembler and Tools:
7236 Fixed a compilation problem with the pre-defined Resource Descriptor
7238 names where an "object does not exist" error could be incorrectly
7240 if the parent ResourceTemplate pathname places the template within a
7241 different namespace scope than the current scope. (BZ 7212)
7243 Fixed a problem where the compiler could hang after syntax errors
7245 in an ElseIf construct. (BZ 453)
7247 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
7248 operator. An incorrect output filename was produced when this parameter
7250 a null string (""). Now, the original input filename is used as the AML
7251 output filename, with an ".aml" extension.
7253 Implemented a generic batch command mode for the AcpiExec utility
7255 any AML debugger command) (Valery Podrezov).
7257 ----------------------------------------
7258 12 September 2006. Summary of changes for version 20060912:
7260 1) ACPI CA Core Subsystem:
7262 Enhanced the implementation of the "serialized mode" of the interpreter
7263 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
7264 specified, instead of creating a serialization semaphore per control
7266 the interpreter lock is simply no longer released before a blocking
7267 operation during control method execution. This effectively makes the AML
7268 Interpreter single-threaded. The overhead of a semaphore per-method is
7271 Fixed a regression where an error was no longer emitted if a control
7273 attempts to create 2 objects of the same name. This once again returns
7274 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
7276 will dynamically serialize the control method to possible prevent future
7279 Integrated a fix for a problem with PCI Express HID detection in the PCI
7280 Config Space setup procedure. (BZ 7145)
7282 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
7283 AcpiHwInitialize function - the FADT registers are now validated when the
7286 Added two new warnings during FADT verification - 1) if the FADT is
7288 than the largest known FADT version, and 2) if there is a mismatch
7291 32-bit block address and the 64-bit X counterpart (when both are non-
7294 Example Code and Data Size: These are the sizes for the OS-independent
7295 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7296 debug version of the code includes the debug output trace mechanism and
7298 a much larger code and data size.
7301 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7302 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7304 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7305 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7308 2) iASL Compiler/Disassembler and Tools:
7310 Fixed a problem with the implementation of the Switch() operator where
7312 temporary variable was declared too close to the actual Switch, instead
7314 at method level. This could cause a problem if the Switch() operator is
7315 within a while loop, causing an error on the second iteration. (BZ 460)
7317 Disassembler - fix for error emitted for unknown type for target of scope
7318 operator. Now, ignore it and continue.
7320 Disassembly of an FADT now verifies the input FADT and reports any errors
7321 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
7323 Disassembly of raw data buffers with byte initialization data now
7325 each output line with the current buffer offset.
7327 Disassembly of ASF! table now includes all variable-length data fields at
7328 the end of some of the subtables.
7330 The disassembler now emits a comment if a buffer appears to be a
7331 ResourceTemplate, but cannot be disassembled as such because the EndTag
7333 not appear at the very end of the buffer.
7335 AcpiExec - Added the "-t" command line option to enable the serialized
7337 of the AML interpreter.
7339 ----------------------------------------
7340 31 August 2006. Summary of changes for version 20060831:
7342 1) ACPI CA Core Subsystem:
7344 Miscellaneous fixes for the Table Manager:
7345 - Correctly initialize internal common FADT for all 64-bit "X" fields
7346 - Fixed a couple table mapping issues during table load
7347 - Fixed a couple alignment issues for IA64
7348 - Initialize input array to zero in AcpiInitializeTables
7349 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
7352 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
7354 immediately disabled to prevent the waking GPE from firing again and to
7355 prevent other wake GPEs from interrupting the wake process.
7357 Added the AcpiGpeCount global that tracks the number of processed GPEs,
7359 be used for debugging systems with a large number of ACPI interrupts.
7361 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
7362 both the ACPICA headers and the disassembler.
7364 Example Code and Data Size: These are the sizes for the OS-independent
7365 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7366 debug version of the code includes the debug output trace mechanism and
7368 a much larger code and data size.
7371 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7372 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7374 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7375 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7378 2) iASL Compiler/Disassembler and Tools:
7380 Disassembler support for the DMAR ACPI table.
7382 ----------------------------------------
7383 23 August 2006. Summary of changes for version 20060823:
7385 1) ACPI CA Core Subsystem:
7387 The Table Manager component has been completely redesigned and
7388 reimplemented. The new design is much simpler, and reduces the overall
7390 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
7392 now possible to obtain the ACPI tables very early during kernel
7393 initialization, even before dynamic memory management is initialized.
7394 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
7396 Obsolete ACPICA interfaces:
7398 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
7401 - AcpiLoadTable: Not needed.
7402 - AcpiUnloadTable: Not needed.
7404 New ACPICA interfaces:
7406 - AcpiInitializeTables: Must be called before the table manager can be
7408 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
7409 allocated memory after it becomes available.
7410 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
7414 Other ACPICA changes:
7416 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
7418 AcpiOsUnmapMemory to free this mapping.
7419 - AcpiGetTable returns the actual mapped table. The mapping is managed
7420 internally and must not be deleted by the caller. Use of this interface
7421 causes no additional dynamic memory allocation.
7422 - AcpiFindRootPointer: Support for physical addressing has been
7424 it appeared to be unused.
7425 - The interface to AcpiOsMapMemory has changed to be consistent with the
7426 other allocation interfaces.
7427 - The interface to AcpiOsGetRootPointer has changed to eliminate
7430 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
7432 bit platforms. Was previously 64 bits on all platforms.
7433 - The interface to the ACPI Global Lock acquire/release macros have
7435 slightly since ACPICA no longer keeps a local copy of the FACS with a
7436 constructed pointer to the actual global lock.
7438 Porting to the new table manager:
7440 - AcpiInitializeTables: Must be called once, and can be called anytime
7441 during the OS initialization process. It allows the host to specify an
7443 of memory to be used to store the internal version of the RSDT/XSDT (root
7444 table). This allows the host to access ACPI tables before memory
7446 is initialized and running.
7447 - AcpiReallocateRootTable: Can be called after memory management is
7449 to copy the root table to a dynamically allocated array, freeing up the
7450 scratch memory specified in the call to AcpiInitializeTables.
7451 - AcpiSubsystemInitialize: This existing interface is independent of the
7452 Table Manager, and does not have to be called before the Table Manager
7454 be used, it only must be called before the rest of ACPICA can be used.
7455 - ACPI Tables: Some changes have been made to the names and structure of
7457 actbl.h and actbl1.h header files and may require changes to existing
7459 For example, bitfields have been completely removed because of their lack
7461 portability across C compilers.
7462 - Update interfaces to the Global Lock acquire/release macros if local
7463 versions are used. (see acwin.h)
7465 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
7469 Example Code and Data Size: These are the sizes for the OS-independent
7470 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7471 debug version of the code includes the debug output trace mechanism and
7473 a much larger code and data size.
7476 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7477 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7479 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7480 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7483 2) iASL Compiler/Disassembler and Tools:
7485 No changes for this release.
7487 ----------------------------------------
7488 21 July 2006. Summary of changes for version 20060721:
7490 1) ACPI CA Core Subsystem:
7492 The full source code for the ASL test suite used to validate the iASL
7493 compiler and the ACPICA core subsystem is being released with the ACPICA
7494 source for the first time. The source is contained in a separate package
7496 consists of over 1100 files that exercise all ASL/AML operators. The
7498 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
7502 Completed a new design and implementation for support of the ACPI Global
7503 Lock. On the OS side, the global lock is now treated as a standard AML
7504 mutex. Previously, multiple OS threads could "acquire" the global lock
7505 simultaneously. However, this could cause the BIOS to be starved out of
7507 lock - especially in cases such as the Embedded Controller driver where
7508 there is a tight coupling between the OS and the BIOS.
7510 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
7511 The Global Lock interrupt handler no longer queues the execution of a
7512 separate thread to signal the global lock semaphore. Instead, the
7514 is signaled directly from the interrupt handler.
7516 Implemented support within the AML interpreter for package objects that
7517 contain a larger AML length (package list length) than the package
7519 count. In this case, the length of the package is truncated to match the
7520 package element count. Some BIOS code apparently modifies the package
7522 on the fly, and this change supports this behavior. Provides
7524 with the MS AML interpreter. (With assistance from Fiodor Suietov)
7526 Implemented a temporary fix for the BankValue parameter of a Bank Field
7528 support all constant values, now including the Zero and One opcodes.
7529 Evaluation of this parameter must eventually be converted to a full
7531 evaluation. A not-implemented error is now returned (temporarily) for
7533 constant values for this parameter.
7535 Fixed problem reports (Fiodor Suietov) integrated:
7536 - Fix for premature object deletion after CopyObject on Operation Region
7540 Example Code and Data Size: These are the sizes for the OS-independent
7541 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7542 debug version of the code includes the debug output trace mechanism and
7544 a much larger code and data size.
7547 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7548 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
7550 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7551 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7554 2) iASL Compiler/Disassembler and Tools:
7556 No changes for this release.
7558 ----------------------------------------
7559 07 July 2006. Summary of changes for version 20060707:
7561 1) ACPI CA Core Subsystem:
7563 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7564 that do not allow the initialization of address pointers within packed
7565 structures - even though the hardware itself may support misaligned
7566 transfers. Some of the debug data structures are packed by default to
7569 Added an error message for the case where AcpiOsGetThreadId() returns
7571 A non-zero value is required by the core ACPICA code to ensure the proper
7572 operation of AML mutexes and recursive control methods.
7574 The DSDT is now the only ACPI table that determines whether the AML
7575 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7577 the hooks for per-table 32/64 switching have been removed from the code.
7579 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7581 Fixed a possible leak of an OwnerID in the error path of
7582 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7583 deletion to a single place in AcpiTbUninstallTable to correct possible
7585 when using the AcpiTbDeleteTablesByType interface (with assistance from
7588 Fixed a problem with Serialized control methods where the semaphore
7589 associated with the method could be over-signaled after multiple method
7592 Fixed two issues with the locking of the internal namespace data
7594 Both the Unload() operator and AcpiUnloadTable interface now lock the
7595 namespace during the namespace deletion associated with the table unload
7596 (with assistance from Linn Crosetto.)
7598 Fixed problem reports (Valery Podrezov) integrated:
7599 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7601 Fixed problem reports (Fiodor Suietov) integrated:
7602 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7603 - On Address Space handler deletion, needless deactivation call (BZ 374)
7604 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7606 - Possible memory leak, Notify sub-objects of Processor, Power,
7609 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7610 - Minimum Length of RSDT should be validated (BZ 379)
7611 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7613 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7617 Example Code and Data Size: These are the sizes for the OS-independent
7618 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7619 debug version of the code includes the debug output trace mechanism and
7621 a much larger code and data size.
7624 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7625 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7627 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7628 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7631 2) iASL Compiler/Disassembler and Tools:
7633 Fixed problem reports:
7634 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7637 ----------------------------------------
7638 23 June 2006. Summary of changes for version 20060623:
7640 1) ACPI CA Core Subsystem:
7642 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7643 allows the type to be customized to the host OS for improved efficiency
7644 (since a spinlock is usually a very small object.)
7646 Implemented support for "ignored" bits in the ACPI registers. According
7648 the ACPI specification, these bits should be preserved when writing the
7649 registers via a read/modify/write cycle. There are 3 bits preserved in
7651 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7653 Implemented the initial deployment of new OSL mutex interfaces. Since
7655 host operating systems have separate mutex and semaphore objects, this
7656 feature was requested. The base code now uses mutexes (and the new mutex
7657 interfaces) wherever a binary semaphore was used previously. However, for
7658 the current release, the mutex interfaces are defined as macros to map
7660 to the existing semaphore interfaces. Therefore, no OSL changes are
7662 at this time. (See acpiosxf.h)
7664 Fixed several problems with the support for the control method SyncLevel
7665 parameter. The SyncLevel now works according to the ACPI specification
7667 in concert with the Mutex SyncLevel parameter, since the current
7669 is a property of the executing thread. Mutual exclusion for control
7671 is now implemented with a mutex instead of a semaphore.
7673 Fixed three instances of the use of the C shift operator in the bitfield
7674 support code (exfldio.c) to avoid the use of a shift value larger than
7676 target data width. The behavior of C compilers is undefined in this case
7678 can cause unpredictable results, and therefore the case must be detected
7680 avoided. (Fiodor Suietov)
7682 Added an info message whenever an SSDT or OEM table is loaded dynamically
7683 via the Load() or LoadTable() ASL operators. This should improve
7685 capability since it will show exactly what tables have been loaded
7687 the tables present in the RSDT/XSDT.)
7689 Example Code and Data Size: These are the sizes for the OS-independent
7690 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7691 debug version of the code includes the debug output trace mechanism and
7693 a much larger code and data size.
7696 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7697 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7699 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7700 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7703 2) iASL Compiler/Disassembler and Tools:
7705 No changes for this release.
7707 ----------------------------------------
7708 08 June 2006. Summary of changes for version 20060608:
7710 1) ACPI CA Core Subsystem:
7712 Converted the locking mutex used for the ACPI hardware to a spinlock.
7714 change should eliminate all problems caused by attempting to acquire a
7715 semaphore at interrupt level, and it means that all ACPICA external
7716 interfaces that directly access the ACPI hardware can be safely called
7718 interrupt level. OSL code that implements the semaphore interfaces should
7720 able to eliminate any workarounds for being called at interrupt level.
7722 Fixed a regression introduced in 20060526 where the ACPI device
7723 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7725 did not have an optional _INI method.
7727 Fixed an IndexField issue where a write to the Data Register should be
7728 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7732 Fixed problem reports (Valery Podrezov) integrated:
7733 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7735 Fixed problem reports (Fiodor Suietov) integrated:
7736 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7738 Removed four global mutexes that were obsolete and were no longer being
7741 Example Code and Data Size: These are the sizes for the OS-independent
7742 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7743 debug version of the code includes the debug output trace mechanism and
7745 a much larger code and data size.
7748 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7749 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7751 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7752 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7755 2) iASL Compiler/Disassembler and Tools:
7757 Fixed a fault when using -g option (get tables from registry) on Windows
7760 Fixed problem reports integrated:
7761 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7762 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7764 - Global table revision override (-r) is ignored (BZ 413)
7766 ----------------------------------------
7767 26 May 2006. Summary of changes for version 20060526:
7769 1) ACPI CA Core Subsystem:
7771 Restructured, flattened, and simplified the internal interfaces for
7772 namespace object evaluation - resulting in smaller code, less CPU stack
7774 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7776 Fixed a problem with the CopyObject operator where the first parameter
7778 not typed correctly for the parser, interpreter, compiler, and
7780 Caused various errors and unexpected behavior.
7782 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7783 produced incorrect results with some C compilers. Since the behavior of C
7784 compilers when the shift value is larger than the datatype width is
7785 apparently not well defined, the interpreter now detects this condition
7787 simply returns zero as expected in all such cases. (BZ 395)
7789 Fixed problem reports (Valery Podrezov) integrated:
7790 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7791 - Allow interpreter to handle nested method declarations (BZ 5361)
7793 Fixed problem reports (Fiodor Suietov) integrated:
7794 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7796 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7798 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7799 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7800 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7801 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7802 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7803 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7804 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7806 - Status of the Global Initialization Handler call not used (BZ 366)
7807 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7809 Example Code and Data Size: These are the sizes for the OS-independent
7810 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7811 debug version of the code includes the debug output trace mechanism and
7813 a much larger code and data size.
7816 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7817 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7819 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7820 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7823 2) iASL Compiler/Disassembler and Tools:
7825 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7826 namespace identifiers with no collision with existing resource descriptor
7827 macro names. This provides compatibility with other ASL compilers and is
7828 most useful for disassembly/recompilation of existing tables without
7830 errors. (With assistance from Thomas Renninger)
7832 Disassembler: fixed an incorrect disassembly problem with the
7833 DataTableRegion and CopyObject operators. Fixed a possible fault during
7834 disassembly of some Alias operators.
7836 ----------------------------------------
7837 12 May 2006. Summary of changes for version 20060512:
7839 1) ACPI CA Core Subsystem:
7841 Replaced the AcpiOsQueueForExecution interface with a new interface named
7842 AcpiOsExecute. The major difference is that the new interface does not
7844 a Priority parameter, this appeared to be useless and has been replaced
7847 Type parameter. The Type tells the host what type of execution is being
7848 requested, such as global lock handler, notify handler, GPE handler, etc.
7849 This allows the host to queue and execute the request as appropriate for
7851 request type, possibly using different work queues and different
7853 for the various request types. This enables fixes for multithreading
7854 deadlock problems such as BZ #5534, and will require changes to all
7856 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7858 Fixed a possible memory leak associated with the support for the so-
7860 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7863 Fixed a problem with the Load() operator where a table load from an
7864 operation region could overwrite an internal table buffer by up to 7
7866 and cause alignment faults on IPF systems. (With assistance from Luming
7869 Example Code and Data Size: These are the sizes for the OS-independent
7870 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7871 debug version of the code includes the debug output trace mechanism and
7873 a much larger code and data size.
7876 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7877 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7879 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7880 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7884 2) iASL Compiler/Disassembler and Tools:
7886 Disassembler: Implemented support to cross reference the internal
7888 and automatically generate ASL External() statements for symbols not
7890 within the current table being disassembled. This will simplify the
7891 disassembly and recompilation of interdependent tables such as SSDTs
7893 these statements will no longer have to be added manually.
7895 Disassembler: Implemented experimental support to automatically detect
7896 invocations of external control methods and generate appropriate
7898 statements. This is problematic because the AML cannot be correctly
7900 until the number of arguments for each control method is known.
7902 standalone method invocations and invocations as the source operand of a
7903 Store() statement are supported.
7905 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
7906 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
7907 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
7908 more readable and likely closer to the original ASL source.
7910 ----------------------------------------
7911 21 April 2006. Summary of changes for version 20060421:
7913 1) ACPI CA Core Subsystem:
7915 Removed a device initialization optimization introduced in 20051216 where
7916 the _STA method was not run unless an _INI was also present for the same
7917 device. This optimization could cause problems because it could allow
7919 methods to be run within a not-present device subtree. (If a not-present
7920 device had no _INI, _STA would not be run, the not-present status would
7922 be discovered, and the children of the device would be incorrectly
7925 Implemented a new _STA optimization where namespace subtrees that do not
7926 contain _INI are identified and ignored during device initialization.
7927 Selectively running _STA can significantly improve boot time on large
7928 machines (with assistance from Len Brown.)
7930 Implemented support for the device initialization case where the returned
7931 _STA flags indicate a device not-present but functioning. In this case,
7933 is not run, but the device children are examined for presence, as per the
7936 Implemented an additional change to the IndexField support in order to
7937 conform to MS behavior. The value written to the Index Register is not
7938 simply a byte offset, it is a byte offset in units of the access width of
7939 the parent Index Field. (Fiodor Suietov)
7941 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
7942 interface is called during the creation of all AML operation regions, and
7943 allows the host OS to exert control over what addresses it will allow the
7944 AML code to access. Operation Regions whose addresses are disallowed will
7945 cause a runtime exception when they are actually accessed (will not
7947 or abort table loading.) See oswinxf or osunixxf for an example
7950 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
7951 interface allows the host OS to match the various "optional"
7952 interface/behavior strings for the _OSI predefined control method as
7953 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
7954 for an example implementation.
7956 Restructured and corrected various problems in the exception handling
7958 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
7959 (with assistance from Takayoshi Kochi.)
7961 Modified the Linux source converter to ignore quoted string literals
7963 converting identifiers from mixed to lower case. This will correct
7965 with the disassembler and other areas where such strings must not be
7968 The ACPI_FUNCTION_* macros no longer require quotes around the function
7969 name. This allows the Linux source converter to convert the names, now
7971 the converter ignores quoted strings.
7973 Example Code and Data Size: These are the sizes for the OS-independent
7974 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7975 debug version of the code includes the debug output trace mechanism and
7977 a much larger code and data size.
7981 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
7982 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
7984 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
7985 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
7988 2) iASL Compiler/Disassembler and Tools:
7990 Implemented 3 new warnings for iASL, and implemented multiple warning
7994 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
7996 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
7997 check for the possible timeout, a warning is issued.
7999 2) Useless operators: If an ASL operator does not specify an optional
8001 operand and it also does not use the function return value from the
8002 operator, a warning is issued since the operator effectively does
8005 3) Unreferenced objects: If a namespace object is created, but never
8006 referenced, a warning is issued. This is a warning level 2 since there
8008 cases where this is ok, such as when a secondary table is loaded that
8010 the unreferenced objects. Even so, care is taken to only flag objects
8012 don't look like they will ever be used. For example, the reserved methods
8013 (starting with an underscore) are usually not referenced because it is
8014 expected that the OS will invoke them.
8016 ----------------------------------------
8017 31 March 2006. Summary of changes for version 20060331:
8019 1) ACPI CA Core Subsystem:
8021 Implemented header file support for the following additional ACPI tables:
8022 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
8024 all current and known ACPI tables are now defined in the ACPICA headers
8026 are available for use by device drivers and other software.
8028 Implemented support to allow tables that contain ACPI names with invalid
8029 characters to be loaded. Previously, this would cause the table load to
8030 fail, but since there are several known cases of such tables on existing
8031 machines, this change was made to enable ACPI support for them. Also,
8033 matches the behavior of the Microsoft ACPI implementation.
8035 Fixed a couple regressions introduced during the memory optimization in
8037 20060317 release. The namespace node definition required additional
8038 reorganization and an internal datatype that had been changed to 8-bit
8040 restored to 32-bit. (Valery Podrezov)
8042 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
8043 could be passed through to AcpiOsReleaseObject which is unexpected. Such
8044 null pointers are now trapped and ignored, matching the behavior of the
8045 previous implementation before the deployment of AcpiOsReleaseObject.
8046 (Valery Podrezov, Fiodor Suietov)
8048 Fixed a memory mapping leak during the deletion of a SystemMemory
8050 region where a cached memory mapping was not deleted. This became a
8051 noticeable problem for operation regions that are defined within
8053 used control methods. (Dana Meyers)
8055 Reorganized the ACPI table header files into two main files: one for the
8056 ACPI tables consumed by the ACPICA core, and another for the
8058 ACPI tables that are consumed by the drivers and other software. The
8060 FADT definitions were merged into one common section and three different
8061 tables (ACPI 1.0, 1.0+, and 2.0)
8063 Example Code and Data Size: These are the sizes for the OS-independent
8064 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8065 debug version of the code includes the debug output trace mechanism and
8067 a much larger code and data size.
8070 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8071 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8073 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8074 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8077 2) iASL Compiler/Disassembler and Tools:
8079 Disassembler: Implemented support to decode and format all non-AML ACPI
8080 tables (tables other than DSDTs and SSDTs.) This includes the new tables
8081 added to the ACPICA headers, therefore all current and known ACPI tables
8085 Disassembler: The change to allow ACPI names with invalid characters also
8086 enables the disassembly of such tables. Invalid characters within names
8088 changed to '*' to make the name printable; the iASL compiler will still
8089 generate an error for such names, however, since this is an invalid ACPI
8092 Implemented an option for AcpiXtract (-a) to extract all tables found in
8094 input file. The default invocation extracts only the DSDTs and SSDTs.
8096 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
8097 makefile for the AcpiXtract utility.
8099 ----------------------------------------
8100 17 March 2006. Summary of changes for version 20060317:
8102 1) ACPI CA Core Subsystem:
8104 Implemented the use of a cache object for all internal namespace nodes.
8105 Since there are about 1000 static nodes in a typical system, this will
8106 decrease memory use for cache implementations that minimize per-
8108 overhead (such as a slab allocator.)
8110 Removed the reference count mechanism for internal namespace nodes, since
8112 was deemed unnecessary. This reduces the size of each namespace node by
8113 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
8115 and 32 bytes for the 64-bit case.
8117 Optimized several internal data structures to reduce object size on 64-
8119 platforms by packing data within the 64-bit alignment. This includes the
8120 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
8121 instances corresponding to the namespace objects.
8123 Added two new strings for the predefined _OSI method: "Windows 2001.1
8127 Split the allocation tracking mechanism out to a separate file, from
8128 utalloc.c to uttrack.c. This mechanism appears to be only useful for
8129 application-level code. Kernels may wish to not include uttrack.c in
8132 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
8134 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
8137 Code and Data Size: These are the sizes for the acpica.lib produced by
8139 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8141 driver or OSPM code. The debug version of the code includes the debug
8143 trace mechanism and has a much larger code and data size. Note that these
8144 values will vary depending on the efficiency of the compiler and the
8145 compiler options used during generation.
8148 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8149 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8151 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8152 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8155 2) iASL Compiler/Disassembler and Tools:
8157 Implemented an ANSI C version of the acpixtract utility. This version
8159 automatically extract the DSDT and all SSDTs from the input acpidump text
8160 file and dump the binary output to separate files. It can also display a
8161 summary of the input file including the headers for each table found and
8162 will extract any single ACPI table, with any signature. (See
8163 source/tools/acpixtract)
8165 ----------------------------------------
8166 10 March 2006. Summary of changes for version 20060310:
8168 1) ACPI CA Core Subsystem:
8170 Tagged all external interfaces to the subsystem with the new
8171 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
8173 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
8174 macro. The default definition is NULL.
8176 Added the ACPI_THREAD_ID type for the return value from
8178 This allows the host to define this as necessary to simplify kernel
8179 integration. The default definition is ACPI_NATIVE_UINT.
8181 Fixed two interpreter problems related to error processing, the deletion
8183 objects, and placing invalid pointers onto the internal operator result
8184 stack. BZ 6028, 6151 (Valery Podrezov)
8186 Increased the reference count threshold where a warning is emitted for
8188 reference counts in order to eliminate unnecessary warnings on systems
8190 large namespaces (especially 64-bit.) Increased the value from 0x400 to
8193 Due to universal disagreement as to the meaning of the 'c' in the
8195 function, the ACPI_MEM_CALLOCATE macro has been renamed to
8196 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
8197 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
8200 Code and Data Size: These are the sizes for the acpica.lib produced by
8202 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8204 driver or OSPM code. The debug version of the code includes the debug
8206 trace mechanism and has a much larger code and data size. Note that these
8207 values will vary depending on the efficiency of the compiler and the
8208 compiler options used during generation.
8211 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8212 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8214 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8215 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8218 2) iASL Compiler/Disassembler:
8220 Disassembler: implemented support for symbolic resource descriptor
8221 references. If a CreateXxxxField operator references a fixed offset
8224 resource descriptor, a name is assigned to the descriptor and the offset
8226 translated to the appropriate resource tag and pathname. The addition of
8227 this support brings the disassembled code very close to the original ASL
8228 source code and helps eliminate run-time errors when the disassembled
8230 is modified (and recompiled) in such a way as to invalidate the original
8233 Implemented support for a Descriptor Name as the last parameter to the
8235 Register() macro. This parameter was inadvertently left out of the ACPI
8236 specification, and will be added for ACPI 3.0b.
8238 Fixed a problem where the use of the "_OSI" string (versus the full path
8239 "\_OSI") caused an internal compiler error. ("No back ptr to op")
8241 Fixed a problem with the error message that occurs when an invalid string
8243 used for a _HID object (such as one with an embedded asterisk:
8245 The correct message is now displayed.
8247 ----------------------------------------
8248 17 February 2006. Summary of changes for version 20060217:
8250 1) ACPI CA Core Subsystem:
8252 Implemented a change to the IndexField support to match the behavior of
8254 Microsoft AML interpreter. The value written to the Index register is now
8256 byte offset, no longer an index based upon the width of the Data
8258 This should fix IndexField problems seen on some machines where the Data
8259 register is not exactly one byte wide. The ACPI specification will be
8260 clarified on this point.
8262 Fixed a problem where several resource descriptor types could overrun the
8263 internal descriptor buffer due to size miscalculation: VendorShort,
8264 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
8265 affect all platforms.
8267 Fixed a problem where individual resource descriptors were misaligned
8269 the internal buffer, causing alignment faults on IA64 platforms.
8271 Code and Data Size: These are the sizes for the acpica.lib produced by
8273 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8275 driver or OSPM code. The debug version of the code includes the debug
8277 trace mechanism and has a much larger code and data size. Note that these
8278 values will vary depending on the efficiency of the compiler and the
8279 compiler options used during generation.
8282 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8283 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8285 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8286 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8289 2) iASL Compiler/Disassembler:
8291 Implemented support for new reserved names: _WDG and _WED are Microsoft
8292 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
8293 defined method (Throttling Depth Limit.)
8295 Fixed a problem where a zero-length VendorShort or VendorLong resource
8296 descriptor was incorrectly emitted as a descriptor of length one.
8298 ----------------------------------------
8299 10 February 2006. Summary of changes for version 20060210:
8301 1) ACPI CA Core Subsystem:
8303 Removed a couple of extraneous ACPI_ERROR messages that appeared during
8304 normal execution. These became apparent after the conversion from
8307 Fixed a problem where the CreateField operator could hang if the BitIndex
8309 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
8311 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
8312 failed with an exception. This also fixes a couple of related RefOf and
8313 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
8315 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
8317 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
8321 Implemented a memory cleanup at the end of the execution of each
8323 of an AML While() loop, preventing the accumulation of outstanding
8325 (Valery Podrezov, BZ 5427)
8327 Eliminated a chunk of duplicate code in the object resolution code.
8331 Fixed several warnings during the 64-bit code generation.
8333 The AcpiSrc source code conversion tool now inserts one line of
8335 after an if() statement that is followed immediately by a comment,
8337 readability of the Linux code.
8339 Code and Data Size: The current and previous library sizes for the core
8340 subsystem are shown below. These are the code and data sizes for the
8341 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8343 values do not include any ACPI driver or OSPM code. The debug version of
8345 code includes the debug output trace mechanism and has a much larger code
8346 and data size. Note that these values will vary depending on the
8348 of the compiler and the compiler options used during generation.
8351 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8352 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8354 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8355 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8358 2) iASL Compiler/Disassembler:
8360 Fixed a problem with the disassembly of a BankField operator with a
8362 expression for the BankValue parameter.
8364 ----------------------------------------
8365 27 January 2006. Summary of changes for version 20060127:
8367 1) ACPI CA Core Subsystem:
8369 Implemented support in the Resource Manager to allow unresolved
8371 references within resource package objects for the _PRT method. This
8373 is in addition to the previously implemented unresolved reference support
8374 within the AML parser. If the interpreter slack mode is enabled, these
8375 unresolved references will be passed through to the caller as a NULL
8379 Implemented and deployed new macros and functions for error and warning
8380 messages across the subsystem. These macros are simpler and generate less
8381 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
8382 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
8383 macros remain defined to allow ACPI drivers time to migrate to the new
8386 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
8388 Acquire/Release Lock OSL interfaces.
8390 Fixed a problem where Alias ASL operators are sometimes not correctly
8391 resolved, in both the interpreter and the iASL compiler.
8393 Fixed several problems with the implementation of the
8394 ConcatenateResTemplate
8395 ASL operator. As per the ACPI specification, zero length buffers are now
8396 treated as a single EndTag. One-length buffers always cause a fatal
8397 exception. Non-zero length buffers that do not end with a full 2-byte
8399 cause a fatal exception.
8401 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
8402 interface. (With assistance from Thomas Renninger)
8404 Code and Data Size: The current and previous library sizes for the core
8405 subsystem are shown below. These are the code and data sizes for the
8406 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8408 values do not include any ACPI driver or OSPM code. The debug version of
8410 code includes the debug output trace mechanism and has a much larger code
8411 and data size. Note that these values will vary depending on the
8413 of the compiler and the compiler options used during generation.
8416 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8417 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8419 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8420 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8423 2) iASL Compiler/Disassembler:
8425 Fixed an internal error that was generated for any forward references to
8429 ----------------------------------------
8430 13 January 2006. Summary of changes for version 20060113:
8432 1) ACPI CA Core Subsystem:
8434 Added 2006 copyright to all module headers and signons. This affects
8435 virtually every file in the ACPICA core subsystem, iASL compiler, and the
8438 Enhanced the ACPICA error reporting in order to simplify user migration
8440 the non-debug version of ACPICA. Replaced all instances of the
8441 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
8443 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
8444 respectively. This preserves all error and warning messages in the non-
8446 version of the ACPICA code (this has been referred to as the "debug lite"
8447 option.) Over 200 cases were converted to create a total of over 380
8448 error/warning messages across the ACPICA code. This increases the code
8450 data size of the default non-debug version of the code somewhat (about
8452 but all error/warning reporting may be disabled if desired (and code
8453 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
8454 configuration option. The size of the debug version of ACPICA remains
8458 Fixed a memory leak within the AML Debugger "Set" command. One object was
8459 not properly deleted for every successful invocation of the command.
8461 Code and Data Size: The current and previous library sizes for the core
8462 subsystem are shown below. These are the code and data sizes for the
8463 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8465 values do not include any ACPI driver or OSPM code. The debug version of
8467 code includes the debug output trace mechanism and has a much larger code
8468 and data size. Note that these values will vary depending on the
8470 of the compiler and the compiler options used during generation.
8473 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8474 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8476 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8477 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8480 2) iASL Compiler/Disassembler:
8482 The compiler now officially supports the ACPI 3.0a specification that was
8483 released on December 30, 2005. (Specification is available at
8486 ----------------------------------------
8487 16 December 2005. Summary of changes for version 20051216:
8489 1) ACPI CA Core Subsystem:
8491 Implemented optional support to allow unresolved names within ASL Package
8492 objects. A null object is inserted in the package when a named reference
8493 cannot be located in the current namespace. Enabled via the interpreter
8494 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
8496 that contain such code.
8498 Implemented an optimization to the initialization sequence that can
8500 boot time. During ACPI device initialization, the _STA method is now run
8502 and only if the _INI method exists. The _STA method is used to determine
8504 the device is present; An _INI can only be run if _STA returns present,
8506 it is a waste of time to run the _STA method if the _INI does not exist.
8507 (Prototype and assistance from Dong Wei)
8509 Implemented use of the C99 uintptr_t for the pointer casting macros if it
8511 available in the current compiler. Otherwise, the default (void *) cast
8515 Fixed some possible memory leaks found within the execution path of the
8516 Break, Continue, If, and CreateField operators. (Valery Podrezov)
8518 Fixed a problem introduced in the 20051202 release where an exception is
8519 generated during method execution if a control method attempts to declare
8522 Moved resource descriptor string constants that are used by both the AML
8523 disassembler and AML debugger to the common utilities directory so that
8524 these components are independent.
8526 Implemented support in the AcpiExec utility (-e switch) to globally
8528 exceptions during control method execution (method is not aborted.)
8530 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
8533 Code and Data Size: The current and previous library sizes for the core
8534 subsystem are shown below. These are the code and data sizes for the
8535 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8537 values do not include any ACPI driver or OSPM code. The debug version of
8539 code includes the debug output trace mechanism and has a much larger code
8540 and data size. Note that these values will vary depending on the
8542 of the compiler and the compiler options used during generation.
8545 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8546 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8548 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8549 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8552 2) iASL Compiler/Disassembler:
8554 Fixed a problem where a CPU stack overflow fault could occur if a
8556 method call was made from within a Return statement.
8558 ----------------------------------------
8559 02 December 2005. Summary of changes for version 20051202:
8561 1) ACPI CA Core Subsystem:
8563 Modified the parsing of control methods to no longer create namespace
8564 objects during the first pass of the parse. Objects are now created only
8565 during the execute phase, at the moment the namespace creation operator
8567 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8569 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8570 reentrant control methods are protected by an AML mutex. The mutex will
8572 correctly block multiple threads from attempting to create the same
8576 Increased the number of available Owner Ids for namespace object tracking
8577 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8579 some machines with a large number of ACPI tables (either static or
8582 Fixed a problem with the AcpiExec utility where a fault could occur when
8584 -b switch (batch mode) is used.
8586 Enhanced the namespace dump routine to output the owner ID for each
8589 Code and Data Size: The current and previous library sizes for the core
8590 subsystem are shown below. These are the code and data sizes for the
8591 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8593 values do not include any ACPI driver or OSPM code. The debug version of
8595 code includes the debug output trace mechanism and has a much larger code
8596 and data size. Note that these values will vary depending on the
8598 of the compiler and the compiler options used during generation.
8601 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8602 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8604 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8605 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8608 2) iASL Compiler/Disassembler:
8610 Fixed a parse error during compilation of certain Switch/Case constructs.
8612 simplify the parse, the grammar now allows for multiple Default
8614 and this error is now detected and flagged during the analysis phase.
8616 Disassembler: The disassembly now includes the contents of the original
8617 table header within a comment at the start of the file. This includes the
8618 name and version of the original ASL compiler.
8620 ----------------------------------------
8621 17 November 2005. Summary of changes for version 20051117:
8623 1) ACPI CA Core Subsystem:
8625 Fixed a problem in the AML parser where the method thread count could be
8626 decremented below zero if any errors occurred during the method parse
8628 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8630 This also fixed a related regression with the mechanism that detects and
8631 corrects methods that cannot properly handle reentrancy (related to the
8632 deployment of the new OwnerId mechanism.)
8634 Eliminated the pre-parsing of control methods (to detect errors) during
8635 table load. Related to the problem above, this was causing unwind issues
8637 any errors occurred during the parse, and it seemed to be overkill. A
8639 load should not be aborted if there are problems with any single control
8640 method, thus rendering this feature rather pointless.
8642 Fixed a problem with the new table-driven resource manager where an
8644 buffer overflow could occur for small resource templates.
8646 Implemented a new external interface, AcpiGetVendorResource. This
8648 will find and return a vendor-defined resource descriptor within a _CRS
8650 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8653 Removed the length limit (200) on string objects as per the upcoming ACPI
8654 3.0A specification. This affects the following areas of the interpreter:
8656 any implicit conversion of a Buffer to a String, 2) a String object
8658 of the ASL Concatentate operator, 3) the String object result of the ASL
8661 Fixed a problem in the Windows OS interface layer (OSL) where a
8663 on a semaphore object would incorrectly timeout. This allows the
8664 multithreading features of the AcpiExec utility to work properly under
8667 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8668 the recently added file named "utresrc.c".
8670 Code and Data Size: The current and previous library sizes for the core
8671 subsystem are shown below. These are the code and data sizes for the
8672 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8674 values do not include any ACPI driver or OSPM code. The debug version of
8676 code includes the debug output trace mechanism and has a much larger code
8677 and data size. Note that these values will vary depending on the
8679 of the compiler and the compiler options used during generation.
8682 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8683 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8685 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8686 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8689 2) iASL Compiler/Disassembler:
8691 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8692 specification. For the iASL compiler, this means that string literals
8694 the source ASL can be of any length.
8696 Enhanced the listing output to dump the AML code for resource descriptors
8697 immediately after the ASL code for each descriptor, instead of in a block
8699 the end of the entire resource template.
8701 Enhanced the compiler debug output to dump the entire original parse tree
8702 constructed during the parse phase, before any transforms are applied to
8704 tree. The transformed tree is dumped also.
8706 ----------------------------------------
8707 02 November 2005. Summary of changes for version 20051102:
8709 1) ACPI CA Core Subsystem:
8711 Modified the subsystem initialization sequence to improve GPE support.
8713 GPE initialization has been split into two parts in order to defer
8715 of the _PRW methods (Power Resources for Wake) until after the hardware
8717 fully initialized and the SCI handler is installed. This allows the _PRW
8718 methods to access fields protected by the Global Lock. This will fix
8720 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8722 Converted the ACPI internal object disassemble and display code within
8724 AML debugger to fully table-driven operation, reducing code size and
8725 increasing maintainability.
8727 Fixed a regression with the ConcatenateResTemplate() ASL operator
8729 in the 20051021 release.
8731 Implemented support for "local" internal ACPI object types within the
8732 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8733 These local types include RegionFields, BankFields, IndexFields, Alias,
8737 Moved common AML resource handling code into a new file, "utresrc.c".
8739 code is shared by both the Resource Manager and the AML Debugger.
8741 Code and Data Size: The current and previous library sizes for the core
8742 subsystem are shown below. These are the code and data sizes for the
8743 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8745 values do not include any ACPI driver or OSPM code. The debug version of
8747 code includes the debug output trace mechanism and has a much larger code
8748 and data size. Note that these values will vary depending on the
8750 of the compiler and the compiler options used during generation.
8753 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8754 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8756 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8757 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8760 2) iASL Compiler/Disassembler:
8762 Fixed a problem with very large initializer lists (more than 4000
8764 for both Buffer and Package objects where the parse stack could overflow.
8766 Enhanced the pre-compile source code scan for non-ASCII characters to
8768 characters within comment fields. The scan is now always performed and is
8770 longer optional, detecting invalid characters within a source file
8771 immediately rather than during the parse phase or later.
8773 Enhanced the ASL grammar definition to force early reductions on all
8775 style grammar elements so that the overall parse stack usage is greatly
8776 reduced. This should improve performance and reduce the possibility of
8780 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8782 with the addition of a %expected statement, the compiler generates from
8783 source with no warnings.
8785 Fixed a possible segment fault in the disassembler if the input filename
8786 does not contain a "dot" extension (Thomas Renninger).
8788 ----------------------------------------
8789 21 October 2005. Summary of changes for version 20051021:
8791 1) ACPI CA Core Subsystem:
8793 Implemented support for the EM64T and other x86-64 processors. This
8794 essentially entails recognizing that these processors support non-aligned
8795 memory transfers. Previously, all 64-bit processors were assumed to lack
8796 hardware support for non-aligned transfers.
8798 Completed conversion of the Resource Manager to nearly full table-driven
8799 operation. Specifically, the resource conversion code (convert AML to
8800 internal format and the reverse) and the debug code to dump internal
8801 resource descriptors are fully table-driven, reducing code and data size
8803 improving maintainability.
8805 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8807 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8809 Alexey Starikovskiy)
8811 Implemented support within the resource conversion code for the Type-
8812 Specific byte within the various ACPI 3.0 *WordSpace macros.
8814 Fixed some issues within the resource conversion code for the type-
8816 flags for both Memory and I/O address resource descriptors. For Memory,
8817 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8818 TTP flags into two separate fields.
8820 Code and Data Size: The current and previous library sizes for the core
8821 subsystem are shown below. These are the code and data sizes for the
8822 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8824 values do not include any ACPI driver or OSPM code. The debug version of
8826 code includes the debug output trace mechanism and has a much larger code
8827 and data size. Note that these values will vary depending on the
8829 of the compiler and the compiler options used during generation.
8832 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8833 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8835 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8836 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8840 2) iASL Compiler/Disassembler:
8842 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8844 corresponding ResourceSource string was not also present in a resource
8845 descriptor declaration. This restriction caused problems with existing
8846 AML/ASL code that includes the Index byte without the string. When such
8848 was disassembled, it could not be compiled without modification. Further,
8849 the modified code created a resource template with a different size than
8851 original, breaking code that used fixed offsets into the resource
8855 Removed a recent feature of the disassembler to ignore a lone
8857 byte. This byte is now emitted if present so that the exact AML can be
8858 reproduced when the disassembled code is recompiled.
8860 Improved comments and text alignment for the resource descriptor code
8861 emitted by the disassembler.
8863 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8865 Register() resource descriptor.
8867 ----------------------------------------
8868 30 September 2005. Summary of changes for version 20050930:
8870 1) ACPI CA Core Subsystem:
8872 Completed a major overhaul of the Resource Manager code - specifically,
8873 optimizations in the area of the AML/internal resource conversion code.
8875 code has been optimized to simplify and eliminate duplicated code, CPU
8877 use has been decreased by optimizing function parameters and local
8878 variables, and naming conventions across the manager have been
8880 for clarity and ease of maintenance (this includes function, parameter,
8881 variable, and struct/typedef names.) The update may force changes in some
8882 driver code, depending on how resources are handled by the host OS.
8884 All Resource Manager dispatch and information tables have been moved to a
8885 single location for clarity and ease of maintenance. One new file was
8886 created, named "rsinfo.c".
8888 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
8889 guarantee that the argument is not evaluated twice, making them less
8891 to macro side-effects. However, since there exists the possibility of
8892 additional stack use if a particular compiler cannot optimize them (such
8894 in the debug generation case), the original macros are optionally
8896 Note that some invocations of the return_VALUE macro may now cause size
8897 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
8899 eliminate these. (From Randy Dunlap)
8901 Implemented a new mechanism to enable debug tracing for individual
8903 methods. A new external interface, AcpiDebugTrace, is provided to enable
8904 this mechanism. The intent is to allow the host OS to easily enable and
8905 disable tracing for problematic control methods. This interface can be
8906 easily exposed to a user or debugger interface if desired. See the file
8907 psxface.c for details.
8909 AcpiUtCallocate will now return a valid pointer if a length of zero is
8910 specified - a length of one is used and a warning is issued. This matches
8911 the behavior of AcpiUtAllocate.
8913 Code and Data Size: The current and previous library sizes for the core
8914 subsystem are shown below. These are the code and data sizes for the
8915 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8917 values do not include any ACPI driver or OSPM code. The debug version of
8919 code includes the debug output trace mechanism and has a much larger code
8920 and data size. Note that these values will vary depending on the
8922 of the compiler and the compiler options used during generation.
8925 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8926 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8928 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8929 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8932 2) iASL Compiler/Disassembler:
8934 A remark is issued if the effective compile-time length of a package or
8935 buffer is zero. Previously, this was a warning.
8937 ----------------------------------------
8938 16 September 2005. Summary of changes for version 20050916:
8940 1) ACPI CA Core Subsystem:
8942 Fixed a problem within the Resource Manager where support for the Generic
8943 Register descriptor was not fully implemented. This descriptor is now
8945 recognized, parsed, disassembled, and displayed.
8947 Completely restructured the Resource Manager code to utilize table-driven
8948 dispatch and lookup, eliminating many of the large switch() statements.
8950 reduces overall subsystem code size and code complexity. Affects the
8951 resource parsing and construction, disassembly, and debug dump output.
8953 Cleaned up and restructured the debug dump output for all resource
8954 descriptors. Improved readability of the output and reduced code size.
8956 Fixed a problem where changes to internal data structures caused the
8957 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
8959 Code and Data Size: The current and previous library sizes for the core
8960 subsystem are shown below. These are the code and data sizes for the
8961 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8963 values do not include any ACPI driver or OSPM code. The debug version of
8965 code includes the debug output trace mechanism and has a much larger code
8966 and data size. Note that these values will vary depending on the
8968 of the compiler and the compiler options used during generation.
8971 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
8972 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
8974 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
8975 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
8978 2) iASL Compiler/Disassembler:
8980 Updated the disassembler to automatically insert an EndDependentFn()
8982 into the ASL stream if this macro is missing in the original AML code,
8983 simplifying compilation of the resulting ASL module.
8985 Fixed a problem in the disassembler where a disassembled ResourceSource
8986 string (within a large resource descriptor) was not surrounded by quotes
8988 not followed by a comma, causing errors when the resulting ASL module was
8989 compiled. Also, escape sequences within a ResourceSource string are now
8990 handled correctly (especially "\\")
8992 ----------------------------------------
8993 02 September 2005. Summary of changes for version 20050902:
8995 1) ACPI CA Core Subsystem:
8997 Fixed a problem with the internal Owner ID allocation and deallocation
8998 mechanisms for control method execution and recursive method invocation.
8999 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
9000 messages seen on some systems. Recursive method invocation depth is
9001 currently limited to 255. (Alexey Starikovskiy)
9003 Completely eliminated all vestiges of support for the "module-level
9004 executable code" until this support is fully implemented and debugged.
9006 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
9007 some systems that invoke this support.
9009 Fixed a problem within the resource manager code where the transaction
9011 for a 64-bit address descriptor were handled incorrectly in the type-
9014 Consolidated duplicate code within the address descriptor resource
9016 code, reducing overall subsystem code size.
9018 Fixed a fault when using the AML debugger "disassemble" command to
9019 disassemble individual control methods.
9021 Removed references to the "release_current" directory within the Unix
9024 Code and Data Size: The current and previous core subsystem library sizes
9025 are shown below. These are the code and data sizes for the acpica.lib
9026 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
9027 include any ACPI driver or OSPM code. The debug version of the code
9029 the debug output trace mechanism and has a much larger code and data
9031 Note that these values will vary depending on the efficiency of the
9033 and the compiler options used during generation.
9036 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9037 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9039 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9040 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9043 2) iASL Compiler/Disassembler:
9045 Implemented an error check for illegal duplicate values in the interrupt
9047 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
9050 Implemented error checking for the Irq() and IrqNoFlags() macros to
9052 too many values in the interrupt list (16 max) and invalid values in the
9055 The maximum length string literal within an ASL file is now restricted to
9056 200 characters as per the ACPI specification.
9058 Fixed a fault when using the -ln option (generate namespace listing).
9060 Implemented an error check to determine if a DescriptorName within a
9061 resource descriptor has already been used within the current scope.
9063 ----------------------------------------
9064 15 August 2005. Summary of changes for version 20050815:
9066 1) ACPI CA Core Subsystem:
9068 Implemented a full bytewise compare to determine if a table load request
9070 attempting to load a duplicate table. The compare is performed if the
9072 signatures and table lengths match. This will allow different tables with
9073 the same OEM Table ID and revision to be loaded - probably against the
9075 specification, but discovered in the field nonetheless.
9077 Added the changes.txt logfile to each of the zipped release packages.
9079 Code and Data Size: Current and previous core subsystem library sizes are
9080 shown below. These are the code and data sizes for the acpica.lib
9082 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9083 any ACPI driver or OSPM code. The debug version of the code includes the
9084 debug output trace mechanism and has a much larger code and data size.
9086 that these values will vary depending on the efficiency of the compiler
9088 the compiler options used during generation.
9091 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9092 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9094 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9095 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9098 2) iASL Compiler/Disassembler:
9100 Fixed a problem where incorrect AML code could be generated for Package
9101 objects if optimization is disabled (via the -oa switch).
9103 Fixed a problem with where incorrect AML code is generated for variable-
9104 length packages when the package length is not specified and the number
9106 initializer values is greater than 255.
9109 ----------------------------------------
9110 29 July 2005. Summary of changes for version 20050729:
9112 1) ACPI CA Core Subsystem:
9114 Implemented support to ignore an attempt to install/load a particular
9116 table more than once. Apparently there exists BIOS code that repeatedly
9117 attempts to load the same SSDT upon certain events. With assistance from
9118 Venkatesh Pallipadi.
9120 Restructured the main interface to the AML parser in order to correctly
9121 handle all exceptional conditions. This will prevent leakage of the
9123 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
9125 machines. With assistance from Alexey Starikovskiy.
9127 Support for "module level code" has been disabled in this version due to
9129 number of issues that have appeared on various machines. The support can
9131 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
9132 compilation. When the issues are fully resolved, the code will be enabled
9136 Modified the internal functions for debug print support to define the
9137 FunctionName parameter as a (const char *) for compatibility with
9139 built-in macros such as __FUNCTION__, etc.
9141 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
9143 Implemented support to display an object count summary for the AML
9145 commands Object and Methods.
9147 Code and Data Size: Current and previous core subsystem library sizes are
9148 shown below. These are the code and data sizes for the acpica.lib
9150 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9151 any ACPI driver or OSPM code. The debug version of the code includes the
9152 debug output trace mechanism and has a much larger code and data size.
9154 that these values will vary depending on the efficiency of the compiler
9156 the compiler options used during generation.
9159 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9160 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9162 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9163 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9166 2) iASL Compiler/Disassembler:
9168 Fixed a regression that appeared in the 20050708 version of the compiler
9169 where an error message was inadvertently emitted for invocations of the
9171 reserved control method.
9173 ----------------------------------------
9174 08 July 2005. Summary of changes for version 20050708:
9176 1) ACPI CA Core Subsystem:
9178 The use of the CPU stack in the debug version of the subsystem has been
9179 considerably reduced. Previously, a debug structure was declared in every
9180 function that used the debug macros. This structure has been removed in
9181 favor of declaring the individual elements as parameters to the debug
9182 functions. This reduces the cumulative stack use during nested execution
9184 ACPI function calls at the cost of a small increase in the code size of
9186 debug version of the subsystem. With assistance from Alexey Starikovskiy
9190 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
9191 headers to define a macro that will return the current function name at
9192 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
9194 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
9195 compiler-dependent header, the function name is saved on the CPU stack
9197 pointer per function.) This mechanism is used because apparently there
9198 exists no standard ANSI-C defined macro that that returns the function
9201 Redesigned and reimplemented the "Owner ID" mechanism used to track
9202 namespace objects created/deleted by ACPI tables and control method
9203 execution. A bitmap is now used to allocate and free the IDs, thus
9205 the wraparound problem present in the previous implementation. The size
9207 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
9210 Removed the UINT32_BIT and UINT16_BIT types that were used for the
9212 flag definitions within the headers for the predefined ACPI tables. These
9213 have been replaced by UINT8_BIT in order to increase the code portability
9215 the subsystem. If the use of UINT8 remains a problem, we may be forced to
9216 eliminate bitfields entirely because of a lack of portability.
9218 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
9220 is a frequently used function and this improvement increases the
9222 of the entire subsystem (Alexey Starikovskiy).
9224 Fixed several possible memory leaks and the inverse - premature object
9225 deletion (Alexey Starikovskiy).
9227 Code and Data Size: Current and previous core subsystem library sizes are
9228 shown below. These are the code and data sizes for the acpica.lib
9230 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9231 any ACPI driver or OSPM code. The debug version of the code includes the
9232 debug output trace mechanism and has a much larger code and data size.
9234 that these values will vary depending on the efficiency of the compiler
9236 the compiler options used during generation.
9239 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9240 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9242 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9243 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9245 ----------------------------------------
9246 24 June 2005. Summary of changes for version 20050624:
9248 1) ACPI CA Core Subsystem:
9250 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
9251 the host-defined cache object. This allows the OSL implementation to
9253 and type this object in any manner desired, simplifying the OSL
9254 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
9255 Linux, and should be defined in the OS-specific header file for other
9256 operating systems as required.
9258 Changed the interface to AcpiOsAcquireObject to directly return the
9259 requested object as the function return (instead of ACPI_STATUS.) This
9260 change was made for performance reasons, since this is the purpose of the
9261 interface in the first place. AcpiOsAcquireObject is now similar to the
9262 AcpiOsAllocate interface.
9264 Implemented a new AML debugger command named Businfo. This command
9266 information about all devices that have an associate _PRT object. The
9268 _HID, _UID, and _CID are displayed for these devices.
9270 Modified the initialization sequence in AcpiInitializeSubsystem to call
9272 OSL interface AcpiOslInitialize first, before any local initialization.
9274 change was required because the global initialization now calls OSL
9277 Enhanced the Dump command to display the entire contents of Package
9279 (including all sub-objects and their values.)
9281 Restructured the code base to split some files because of size and/or
9282 because the code logically belonged in a separate file. New files are
9284 below. All makefiles and project files included in the ACPI CA release
9287 utilities/utcache.c /* Local cache interfaces */
9288 utilities/utmutex.c /* Local mutex support */
9289 utilities/utstate.c /* State object support */
9290 interpreter/parser/psloop.c /* Main AML parse loop */
9292 Code and Data Size: Current and previous core subsystem library sizes are
9293 shown below. These are the code and data sizes for the acpica.lib
9295 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9296 any ACPI driver or OSPM code. The debug version of the code includes the
9297 debug output trace mechanism and has a much larger code and data size.
9299 that these values will vary depending on the efficiency of the compiler
9301 the compiler options used during generation.
9304 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9305 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9307 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9308 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9311 2) iASL Compiler/Disassembler:
9313 Fixed a regression introduced in version 20050513 where the use of a
9315 object within a Case() statement caused a compile time exception. The
9316 original behavior has been restored (a Match() operator is emitted.)
9318 ----------------------------------------
9319 17 June 2005. Summary of changes for version 20050617:
9321 1) ACPI CA Core Subsystem:
9323 Moved the object cache operations into the OS interface layer (OSL) to
9325 the host OS to handle these operations if desired (for example, the Linux
9326 OSL will invoke the slab allocator). This support is optional; the
9328 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
9330 code in the ACPI CA core. The new OSL interfaces are shown below. See
9331 utalloc.c for an example implementation, and acpiosxf.h for the exact
9332 interface definitions. With assistance from Alexey Starikovskiy.
9339 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
9341 and restore a flags parameter. This fits better with many OS lock models.
9342 Note: the current execution state (interrupt handler or not) is no longer
9343 passed to these interfaces. If necessary, the OSL must determine this
9345 by itself, a simple and fast operation. With assistance from Alexey
9348 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
9349 present if the revision of the RSDP was 2 or greater. According to the
9351 specification, the XSDT is optional in all cases, and the table manager
9352 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
9353 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
9357 Fixed an interpreter problem with the Mid() operator in the case of an
9359 string where the resulting output string is of zero length. It now
9361 returns a valid, null terminated string object instead of a string object
9362 with a null pointer.
9364 Fixed a problem with the control method argument handling to allow a
9366 to an Arg object that already contains an object of type Device. The
9368 object is now correctly overwritten. Previously, an error was returned.
9371 Enhanced the debugger Find command to emit object values in addition to
9373 found object pathnames. The output format is the same as the dump
9377 Enhanced the debugger Set command. It now has the ability to set the
9379 of any Named integer object in the namespace (Previously, only method
9381 and args could be set.)
9383 Code and Data Size: Current and previous core subsystem library sizes are
9384 shown below. These are the code and data sizes for the acpica.lib
9386 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9387 any ACPI driver or OSPM code. The debug version of the code includes the
9388 debug output trace mechanism and has a much larger code and data size.
9390 that these values will vary depending on the efficiency of the compiler
9392 the compiler options used during generation.
9395 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9396 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9398 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9399 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9402 2) iASL Compiler/Disassembler:
9404 Fixed a regression in the disassembler where if/else/while constructs
9406 output incorrectly. This problem was introduced in the previous release
9407 (20050526). This problem also affected the single-step disassembly in the
9410 Fixed a problem where compiling the reserved _OSI method would randomly
9412 rarely) produce compile errors.
9414 Enhanced the disassembler to emit compilable code in the face of
9416 AML resource descriptors. If the optional ResourceSourceIndex is present,
9417 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
9418 disassembly. Otherwise, the resulting code cannot be compiled without
9421 ----------------------------------------
9422 26 May 2005. Summary of changes for version 20050526:
9424 1) ACPI CA Core Subsystem:
9426 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
9427 the module level (not within a control method.) These opcodes are
9429 exactly once at the time the table is loaded. This type of code was legal
9431 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
9433 order to provide backwards compatibility with earlier BIOS
9435 This eliminates the "Encountered executable code at module level" warning
9436 that was previously generated upon detection of such code.
9438 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
9439 inadvertently be generated during the lookup of namespace objects in the
9440 second pass parse of ACPI tables and control methods. It appears that
9442 problem could occur during the resolution of forward references to
9446 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
9447 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
9448 allows the deadlock detection debug code to be compiled out in the normal
9449 case, improving mutex performance (and overall subsystem performance)
9452 Implemented a handful of miscellaneous fixes for possible memory leaks on
9453 error conditions and error handling control paths. These fixes were
9454 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
9456 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
9458 to prevent a fault in this error case.
9460 Code and Data Size: Current and previous core subsystem library sizes are
9461 shown below. These are the code and data sizes for the acpica.lib
9463 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9464 any ACPI driver or OSPM code. The debug version of the code includes the
9465 debug output trace mechanism and has a much larger code and data size.
9467 that these values will vary depending on the efficiency of the compiler
9469 the compiler options used during generation.
9472 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9473 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9475 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9476 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9479 2) iASL Compiler/Disassembler:
9481 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
9482 the module level (not within a control method.) These operators will be
9483 executed once at the time the table is loaded. This type of code was
9485 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
9486 compiler in order to provide backwards compatibility with earlier BIOS
9490 The ACPI integer width (specified via the table revision ID or the -r
9491 override, 32 or 64 bits) is now used internally during compile-time
9493 folding to ensure that constants are truncated to 32 bits if necessary.
9494 Previously, the revision ID value was only emitted in the AML table
9497 An error message is now generated for the Mutex and Method operators if
9499 SyncLevel parameter is outside the legal range of 0 through 15.
9501 Fixed a problem with the Method operator ParameterTypes list handling
9503 3.0). Previously, more than 2 types or 2 arguments generated a syntax
9505 The actual underlying implementation of method argument typechecking is
9506 still under development, however.
9508 ----------------------------------------
9509 13 May 2005. Summary of changes for version 20050513:
9511 1) ACPI CA Core Subsystem:
9513 Implemented support for PCI Express root bridges -- added support for
9515 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
9517 The interpreter now automatically truncates incoming 64-bit constants to
9519 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
9521 also affects the iASL compiler constant folding. (Note: as per below, the
9522 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
9524 Fixed a problem where string and buffer objects with "static" pointers
9525 (pointers to initialization data within an ACPI table) were not handled
9526 consistently. The internal object copy operation now always copies the
9528 to a newly allocated buffer, regardless of whether the source object is
9531 Fixed a problem with the FromBCD operator where an implicit result
9532 conversion was improperly performed while storing the result to the
9534 operand. Since this is an "explicit conversion" operator, the implicit
9535 conversion should never be performed on the output.
9537 Fixed a problem with the CopyObject operator where a copy to an existing
9538 named object did not always completely overwrite the existing object
9540 at name. Specifically, a buffer-to-buffer copy did not delete the
9544 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9546 structs for consistency.
9548 Code and Data Size: Current and previous core subsystem library sizes are
9549 shown below. These are the code and data sizes for the acpica.lib
9551 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9552 any ACPI driver or OSPM code. The debug version of the code includes the
9553 debug output trace mechanism and has a much larger code and data size.
9555 that these values will vary depending on the efficiency of the compiler
9557 the compiler options used during generation.
9560 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9561 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9562 Current Release: (Same sizes)
9563 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9564 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9567 2) iASL Compiler/Disassembler:
9569 The compiler now emits a warning if an attempt is made to generate a 64-
9571 integer constant from within a 32-bit ACPI table (Revision < 2). The
9573 is truncated to 32 bits.
9575 Fixed a problem with large package objects: if the static length of the
9576 package is greater than 255, the "variable length package" opcode is
9577 emitted. Previously, this caused an error. This requires an update to the
9578 ACPI spec, since it currently (incorrectly) states that packages larger
9580 255 elements are not allowed.
9582 The disassembler now correctly handles variable length packages and
9584 larger than 255 elements.
9586 ----------------------------------------
9587 08 April 2005. Summary of changes for version 20050408:
9589 1) ACPI CA Core Subsystem:
9591 Fixed three cases in the interpreter where an "index" argument to an ASL
9592 function was still (internally) 32 bits instead of the required 64 bits.
9593 This was the Index argument to the Index, Mid, and Match operators.
9595 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9597 not a POSIX-defined function and not present in most kernel-level C
9598 libraries. All references to the C library strupr function have been
9602 Completed the deployment of static functions/prototypes. All prototypes
9604 the static attribute have been moved from the headers to the owning C
9607 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9608 utility). This option allows the utility to extract individual ACPI
9610 from the output of AcpiDmp. It provides the same functionality of the
9611 acpixtract.pl perl script without the worry of setting the correct perl
9612 options. AcpiBin runs on Windows and has not yet been generated/validated
9614 the Linux/Unix environment (but should be soon).
9616 Updated and fixed the table dump option for AcpiBin (-d). This option
9617 converts a single ACPI table to a hex/ascii file, similar to the output
9621 Code and Data Size: Current and previous core subsystem library sizes are
9622 shown below. These are the code and data sizes for the acpica.lib
9624 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9625 any ACPI driver or OSPM code. The debug version of the code includes the
9626 debug output trace mechanism and has a much larger code and data size.
9628 that these values will vary depending on the efficiency of the compiler
9630 the compiler options used during generation.
9633 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9634 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9636 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9637 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9640 2) iASL Compiler/Disassembler:
9642 Disassembler fix: Added a check to ensure that the table length found in
9644 ACPI table header within the input file is not longer than the actual
9646 file size. This indicates some kind of file or table corruption.
9648 ----------------------------------------
9649 29 March 2005. Summary of changes for version 20050329:
9651 1) ACPI CA Core Subsystem:
9653 An error is now generated if an attempt is made to create a Buffer Field
9655 length zero (A CreateField with a length operand of zero.)
9657 The interpreter now issues a warning whenever executable code at the
9659 level is detected during ACPI table load. This will give some idea of the
9660 prevalence of this type of code.
9662 Implemented support for references to named objects (other than control
9663 methods) within package objects.
9665 Enhanced package object output for the debug object. Package objects are
9667 completely dumped, showing all elements.
9669 Enhanced miscellaneous object output for the debug object. Any object can
9670 now be written to the debug object (for example, a device object can be
9671 written, and the type of the object will be displayed.)
9673 The "static" qualifier has been added to all local functions across both
9675 core subsystem and the iASL compiler.
9677 The number of "long" lines (> 80 chars) within the source has been
9678 significantly reduced, by about 1/3.
9680 Cleaned up all header files to ensure that all CA/iASL functions are
9681 prototyped (even static functions) and the formatting is consistent.
9683 Two new header files have been added, acopcode.h and acnames.h.
9685 Removed several obsolete functions that were no longer used.
9687 Code and Data Size: Current and previous core subsystem library sizes are
9688 shown below. These are the code and data sizes for the acpica.lib
9690 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9691 any ACPI driver or OSPM code. The debug version of the code includes the
9692 debug output trace mechanism and has a much larger code and data size.
9694 that these values will vary depending on the efficiency of the compiler
9696 the compiler options used during generation.
9699 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9700 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9702 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9703 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9707 2) iASL Compiler/Disassembler:
9709 Fixed a problem with the resource descriptor generation/support. For the
9710 ResourceSourceIndex and the ResourceSource fields, both must be present,
9712 both must be not present - can't have one without the other.
9714 The compiler now returns non-zero from the main procedure if any errors
9716 occurred during the compilation.
9719 ----------------------------------------
9720 09 March 2005. Summary of changes for version 20050309:
9722 1) ACPI CA Core Subsystem:
9724 The string-to-buffer implicit conversion code has been modified again
9726 a change to the ACPI specification. In order to match the behavior of
9728 other major ACPI implementation, the target buffer is no longer truncated
9730 the source string is smaller than an existing target buffer. This change
9731 requires an update to the ACPI spec, and should eliminate the recent
9732 AE_AML_BUFFER_LIMIT issues.
9734 The "implicit return" support was rewritten to a new algorithm that
9736 the general case. Rather than attempt to determine when a method is about
9738 exit, the result of every ASL operator is saved momentarily until the
9740 next ASL operator is executed. Therefore, no matter how the method exits,
9741 there will always be a saved implicit return value. This feature is only
9742 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9744 AE_AML_NO_RETURN_VALUE errors when enabled.
9746 Implemented implicit conversion support for the predicate (operand) of
9748 If, Else, and While operators. String and Buffer arguments are
9750 converted to Integers.
9752 Changed the string-to-integer conversion behavior to match the new ACPI
9753 errata: "If no integer object exists, a new integer is created. The ASCII
9754 string is interpreted as a hexadecimal constant. Each string character is
9755 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9756 with the first character as the most significant digit, and ending with
9758 first non-hexadecimal character or end-of-string." This means that the
9760 non-hex character terminates the conversion and this is the code that was
9763 Fixed a problem where the ObjectType operator would fail (fault) when
9765 on an Index of a Package which pointed to a null package element. The
9766 operator now properly returns zero (Uninitialized) in this case.
9768 Fixed a problem where the While operator used excessive memory by not
9769 properly popping the result stack during execution. There was no memory
9771 after execution, however. (Code provided by Valery Podrezov.)
9773 Fixed a problem where references to control methods within Package
9775 caused the method to be invoked, instead of producing a reference object
9776 pointing to the method.
9778 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9780 improve performance and reduce code size. (Code provided by Alexey
9783 Code and Data Size: Current and previous core subsystem library sizes are
9784 shown below. These are the code and data sizes for the acpica.lib
9786 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9787 any ACPI driver or OSPM code. The debug version of the code includes the
9788 debug output trace mechanism and has a much larger code and data size.
9790 that these values will vary depending on the efficiency of the compiler
9792 the compiler options used during generation.
9795 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9796 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9798 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9799 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9802 2) iASL Compiler/Disassembler:
9804 Fixed a problem with the Return operator with no arguments. Since the AML
9805 grammar for the byte encoding requires an operand for the Return opcode,
9807 compiler now emits a Return(Zero) for this case. An ACPI specification
9808 update has been written for this case.
9810 For tables other than the DSDT, namepath optimization is automatically
9811 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9813 compiler has no knowledge of where, and thus cannot optimize namepaths.
9815 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9816 inadvertently omitted from the ACPI specification, and will require an
9819 The source file scan for ASCII characters is now optional (-a). This
9821 was made because some vendors place non-ascii characters within comments.
9822 However, the scan is simply a brute-force byte compare to ensure all
9823 characters in the file are in the range 0x00 to 0x7F.
9825 Fixed a problem with the CondRefOf operator where the compiler was
9826 inappropriately checking for the existence of the target. Since the point
9828 the operator is to check for the existence of the target at run-time, the
9829 compiler no longer checks for the target existence.
9831 Fixed a problem where errors generated from the internal AML interpreter
9832 during constant folding were not handled properly, causing a fault.
9834 Fixed a problem with overly aggressive range checking for the Stall
9835 operator. The valid range (max 255) is now only checked if the operand is
9837 type Integer. All other operand types cannot be statically checked.
9839 Fixed a problem where control method references within the RefOf,
9841 and ObjectType operators were not treated properly. They are now treated
9843 actual references, not method invocations.
9845 Fixed and enhanced the "list namespace" option (-ln). This option was
9847 a number of releases ago.
9849 Improved error handling for the Field, IndexField, and BankField
9851 The compiler now cleanly reports and recovers from errors in the field
9852 component (FieldUnit) list.
9854 Fixed a disassembler problem where the optional ResourceDescriptor fields
9855 TRS and TTP were not always handled correctly.
9857 Disassembler - Comments in output now use "//" instead of "/*"
9859 ----------------------------------------
9860 28 February 2005. Summary of changes for version 20050228:
9862 1) ACPI CA Core Subsystem:
9864 Fixed a problem where the result of an Index() operator (an object
9865 reference) must increment the reference count on the target object for
9867 life of the object reference.
9869 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9870 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9872 resource descriptors.
9874 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
9875 Space Descriptor" string, indicating interpreter support for the
9879 Implemented header support for the new ACPI 3.0 FADT flag bits.
9881 Implemented header support for the new ACPI 3.0 PCI Express bits for the
9883 status/enable registers.
9885 Updated header support for the MADT processor local Apic struct and MADT
9886 platform interrupt source struct for new ACPI 3.0 fields.
9888 Implemented header support for the SRAT and SLIT ACPI tables.
9890 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
9894 Code and Data Size: Current and previous core subsystem library sizes are
9895 shown below. These are the code and data sizes for the acpica.lib
9897 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9898 any ACPI driver or OSPM code. The debug version of the code includes the
9899 debug output trace mechanism and has a much larger code and data size.
9901 that these values will vary depending on the efficiency of the compiler
9903 the compiler options used during generation.
9906 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9907 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9909 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9910 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9913 2) iASL Compiler/Disassembler:
9915 Fixed a problem with the internal 64-bit String-to-integer conversion
9917 strings less than two characters long.
9919 Fixed a problem with constant folding where the result of the Index()
9920 operator can not be considered a constant. This means that Index() cannot
9922 a type3 opcode and this will require an update to the ACPI specification.
9924 Disassembler: Implemented support for the TTP, MTP, and TRS resource
9925 descriptor fields. These fields were inadvertently ignored and not output
9927 the disassembly of the resource descriptor.
9930 ----------------------------------------
9931 11 February 2005. Summary of changes for version 20050211:
9933 1) ACPI CA Core Subsystem:
9935 Implemented ACPI 3.0 support for implicit conversion within the Match()
9936 operator. MatchObjects can now be of type integer, buffer, or string
9938 of just type integer. Package elements are implicitly converted to the
9940 of the MatchObject. This change aligns the behavior of Match() with the
9941 behavior of the other logical operators (LLess(), etc.) It also requires
9943 errata change to the ACPI specification as this support was intended for
9944 ACPI 3.0, but was inadvertently omitted.
9946 Fixed a problem with the internal implicit "to buffer" conversion.
9948 that are converted to buffers will cause buffer truncation if the string
9950 smaller than the target buffer. Integers that are converted to buffers
9952 not cause buffer truncation, only zero extension (both as per the ACPI
9953 spec.) The problem was introduced when code was added to truncate the
9954 buffer, but this should not be performed in all cases, only the string
9957 Fixed a problem with the Buffer and Package operators where the
9959 would get confused if two such operators were used as operands to an ASL
9960 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
9961 stack was not being popped after the execution of these operators,
9963 in an AE_NO_RETURN_VALUE exception.
9965 Fixed a problem with constructs of the form Store(Index(...),...). The
9966 reference object returned from Index was inadvertently resolved to an
9968 value. This problem was introduced in version 20050114 when the behavior
9970 Store() was modified to restrict the object types that can be used as the
9971 source operand (to match the ACPI specification.)
9973 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
9975 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
9977 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
9979 Code and Data Size: Current and previous core subsystem library sizes are
9980 shown below. These are the code and data sizes for the acpica.lib
9982 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9983 any ACPI driver or OSPM code. The debug version of the code includes the
9984 debug output trace mechanism and has a much larger code and data size.
9986 that these values will vary depending on the efficiency of the compiler
9988 the compiler options used during generation.
9991 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
9992 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
9994 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
9995 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
9998 2) iASL Compiler/Disassembler:
10000 Fixed a code generation problem in the constant folding optimization code
10001 where incorrect code was generated if a constant was reduced to a buffer
10002 object (i.e., a reduced type 5 opcode.)
10004 Fixed a typechecking problem for the ToBuffer operator. Caused by an
10005 incorrect return type in the internal opcode information table.
10007 ----------------------------------------
10008 25 January 2005. Summary of changes for version 20050125:
10010 1) ACPI CA Core Subsystem:
10012 Fixed a recently introduced problem with the Global Lock where the
10013 underlying semaphore was not created. This problem was introduced in
10014 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
10015 Acquire() operation on _GL.
10017 The local object cache is now optional, and is disabled by default. Both
10018 AcpiExec and the iASL compiler enable the cache because they run in user
10019 mode and this enhances their performance. #define
10020 ACPI_ENABLE_OBJECT_CACHE
10021 to enable the local cache.
10023 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
10025 optional "implicit return" support where an error was returned if no
10027 object was expected, but one was implicitly returned. AE_OK is now
10029 in this case and the implicitly returned object is deleted.
10030 AcpiUtEvaluateObject is only occasionally used, and only to execute
10032 methods such as _STA and _INI where the return type is known up front.
10034 Fixed a few issues with the internal convert-to-integer code. It now
10036 an error if an attempt is made to convert a null string, a string of only
10037 blanks/tabs, or a zero-length buffer. This affects both implicit
10039 and explicit conversion via the ToInteger() operator.
10041 The internal debug code in AcpiUtAcquireMutex has been commented out. It
10043 not needed for normal operation and should increase the performance of
10045 entire subsystem. The code remains in case it is needed for debug
10049 The AcpiExec source and makefile are included in the Unix/Linux package
10053 Code and Data Size: Current and previous core subsystem library sizes are
10054 shown below. These are the code and data sizes for the acpica.lib
10056 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10057 any ACPI driver or OSPM code. The debug version of the code includes the
10058 debug output trace mechanism and has a much larger code and data size.
10060 that these values will vary depending on the efficiency of the compiler
10062 the compiler options used during generation.
10065 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10066 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10068 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10069 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10071 2) iASL Compiler/Disassembler:
10073 Switch/Case support: A warning is now issued if the type of the Switch
10075 cannot be determined at compile time. For example, Switch(Arg0) will
10076 generate the warning, and the type is assumed to be an integer. As per
10078 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
10082 Switch/Case support: Implemented support for buffer and string objects as
10083 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
10084 buffers and strings.
10086 Switch/Case support: The emitted code for the LEqual() comparisons now
10088 the switch value as the first operand, not the second. The case value is
10090 the second operand, and this allows the case value to be implicitly
10091 converted to the type of the switch value, not the other way around.
10093 Switch/Case support: Temporary variables are now emitted immediately
10095 the control method, not at the global level. This means that there are
10097 36 temps available per-method, not 36 temps per-module as was the case
10099 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
10101 ----------------------------------------
10102 14 January 2005. Summary of changes for version 20050114:
10104 Added 2005 copyright to all module headers. This affects every module in
10105 the core subsystem, iASL compiler, and the utilities.
10107 1) ACPI CA Core Subsystem:
10109 Fixed an issue with the String-to-Buffer conversion code where the string
10110 null terminator was not included in the buffer after conversion, but
10112 is existing ASL that assumes the string null terminator is included. This
10114 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
10115 introduced in the previous version when the code was updated to correctly
10116 set the converted buffer size as per the ACPI specification. The ACPI
10118 is ambiguous and will be updated to specify that the null terminator must
10120 included in the converted buffer. This also affects the ToBuffer() ASL
10123 Fixed a problem with the Mid() ASL/AML operator where it did not work
10124 correctly on Buffer objects. Newly created sub-buffers were not being
10129 Fixed a problem in AcpiTbFindTable where incorrect string compares were
10130 performed on the OemId and OemTableId table header fields. These fields
10132 not null terminated, so strncmp is now used instead of strcmp.
10134 Implemented a restriction on the Store() ASL/AML operator to align the
10135 behavior with the ACPI specification. Previously, any object could be
10137 as the source operand. Now, the only objects that may be used are
10139 Buffers, Strings, Packages, Object References, and DDB Handles. If
10140 necessary, the original behavior can be restored by enabling the
10141 EnableInterpreterSlack flag.
10143 Enhanced the optional "implicit return" support to allow an implicit
10145 value from methods that are invoked externally via the AcpiEvaluateObject
10146 interface. This enables implicit returns from the _STA and _INI methods,
10149 Changed the Revision() ASL/AML operator to return the current version of
10151 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
10153 the supported ACPI version (This is the function of the _REV method).
10155 Updated the _REV predefined method to return the currently supported
10159 Implemented batch mode option for the AcpiExec utility (-b).
10161 Code and Data Size: Current and previous core subsystem library sizes are
10162 shown below. These are the code and data sizes for the acpica.lib
10164 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10165 any ACPI driver or OSPM code. The debug version of the code includes the
10166 debug output trace mechanism and has a much larger code and data size.
10168 that these values will vary depending on the efficiency of the compiler
10170 the compiler options used during generation.
10173 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10174 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10176 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10177 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10179 ----------------------------------------
10180 10 December 2004. Summary of changes for version 20041210:
10182 ACPI 3.0 support is nearing completion in both the iASL compiler and the
10183 ACPI CA core subsystem.
10185 1) ACPI CA Core Subsystem:
10187 Fixed a problem in the ToDecimalString operator where the resulting
10189 length was incorrectly calculated. The length is now calculated exactly,
10190 eliminating incorrect AE_STRING_LIMIT exceptions.
10192 Fixed a problem in the ToHexString operator to allow a maximum 200
10194 string to be produced.
10196 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
10198 routine where the length of the resulting buffer was not truncated to the
10199 new size (if the target buffer already existed).
10201 Code and Data Size: Current and previous core subsystem library sizes are
10202 shown below. These are the code and data sizes for the acpica.lib
10204 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10205 any ACPI driver or OSPM code. The debug version of the code includes the
10206 debug output trace mechanism and has a much larger code and data size.
10208 that these values will vary depending on the efficiency of the compiler
10210 the compiler options used during generation.
10213 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10214 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10216 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10217 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10220 2) iASL Compiler/Disassembler:
10222 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
10223 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
10224 Includes support in the disassembler.
10226 Implemented support for the new (ACPI 3.0) parameter to the Register
10230 Fixed a problem where the _HE resource name for the Interrupt macro was
10231 referencing bit 0 instead of bit 1.
10233 Implemented check for maximum 255 interrupts in the Interrupt macro.
10235 Fixed a problem with the predefined resource descriptor names where
10236 incorrect AML code was generated if the offset within the resource buffer
10237 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
10238 but did not update the surrounding package lengths.
10240 Changes to the Dma macro: All channels within the channel list must be
10242 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
10243 optional (default is BusMaster).
10245 Implemented check for maximum 7 data bytes for the VendorShort macro.
10247 The ReadWrite parameter is now optional for the Memory32 and similar
10250 ----------------------------------------
10251 03 December 2004. Summary of changes for version 20041203:
10253 1) ACPI CA Core Subsystem:
10255 The low-level field insertion/extraction code (exfldio) has been
10257 rewritten to eliminate unnecessary complexity, bugs, and boundary
10260 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
10262 operators where the input operand could be inadvertently deleted if no
10263 conversion was necessary (e.g., if the input to ToInteger was an Integer
10266 Fixed a problem with the ToDecimalString and ToHexString where an
10268 exception code was returned if the resulting string would be > 200 chars.
10269 AE_STRING_LIMIT is now returned.
10271 Fixed a problem with the Concatenate operator where AE_OK was always
10272 returned, even if the operation failed.
10274 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
10275 semaphores to be allocated.
10277 Code and Data Size: Current and previous core subsystem library sizes are
10278 shown below. These are the code and data sizes for the acpica.lib
10280 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10281 any ACPI driver or OSPM code. The debug version of the code includes the
10282 debug output trace mechanism and has a much larger code and data size.
10284 that these values will vary depending on the efficiency of the compiler
10286 the compiler options used during generation.
10289 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10290 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10292 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10293 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10296 2) iASL Compiler/Disassembler:
10298 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
10299 recently introduced in 20041119.
10301 Fixed a problem with the ToUUID macro where the upper nybble of each
10303 byte was inadvertently set to zero.
10305 ----------------------------------------
10306 19 November 2004. Summary of changes for version 20041119:
10308 1) ACPI CA Core Subsystem:
10310 Fixed a problem in the internal ConvertToInteger routine where new
10312 were not truncated to 32 bits for 32-bit ACPI tables. This routine
10314 buffers and strings to integers.
10316 Implemented support to store a value to an Index() on a String object.
10318 is an ACPI 2.0 feature that had not yet been implemented.
10320 Implemented new behavior for storing objects to individual package
10322 (via the Index() operator). The previous behavior was to invoke the
10324 conversion rules if an object was already present at the index. The new
10325 behavior is to simply delete any existing object and directly store the
10327 object. Although the ACPI specification seems unclear on this subject,
10329 ACPI implementations behave in this manner. (This is the root of the
10330 AE_BAD_HEX_CONSTANT issue.)
10332 Modified the RSDP memory scan mechanism to support the extended checksum
10334 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
10335 RSDP signature is found with a valid checksum.
10337 Code and Data Size: Current and previous core subsystem library sizes are
10338 shown below. These are the code and data sizes for the acpica.lib
10340 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10341 any ACPI driver or OSPM code. The debug version of the code includes the
10342 debug output trace mechanism and has a much larger code and data size.
10344 that these values will vary depending on the efficiency of the compiler
10346 the compiler options used during generation.
10349 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10350 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10352 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10353 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10356 2) iASL Compiler/Disassembler:
10358 Fixed a missing semicolon in the aslcompiler.y file.
10360 ----------------------------------------
10361 05 November 2004. Summary of changes for version 20041105:
10363 1) ACPI CA Core Subsystem:
10365 Implemented support for FADT revision 2. This was an interim table
10367 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
10369 Implemented optional support to allow uninitialized LocalX and ArgX
10370 variables in a control method. The variables are initialized to an
10372 object with a value of zero. This support is enabled by setting the
10373 AcpiGbl_EnableInterpreterSlack flag to TRUE.
10375 Implemented support for Integer objects for the SizeOf operator. Either
10377 or 8 is returned, depending on the current integer size (32-bit or 64-
10379 depending on the parent table revision).
10381 Fixed a problem in the implementation of the SizeOf and ObjectType
10383 where the operand was resolved to a value too early, causing incorrect
10384 return values for some objects.
10386 Fixed some possible memory leaks during exceptional conditions.
10388 Code and Data Size: Current and previous core subsystem library sizes are
10389 shown below. These are the code and data sizes for the acpica.lib
10391 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10392 any ACPI driver or OSPM code. The debug version of the code includes the
10393 debug output trace mechanism and has a much larger code and data size.
10395 that these values will vary depending on the efficiency of the compiler
10397 the compiler options used during generation.
10400 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10401 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10403 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10404 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10407 2) iASL Compiler/Disassembler:
10409 Implemented support for all ACPI 3.0 reserved names and methods.
10411 Implemented all ACPI 3.0 grammar elements in the front-end, including
10412 support for semicolons.
10414 Implemented the ACPI 3.0 Function() and ToUUID() macros
10416 Fixed a problem in the disassembler where a Scope() operator would not be
10417 emitted properly if the target of the scope was in another table.
10419 ----------------------------------------
10420 15 October 2004. Summary of changes for version 20041015:
10422 Note: ACPI CA is currently undergoing an in-depth and complete formal
10423 evaluation to test/verify the following areas. Other suggestions are
10424 welcome. This will result in an increase in the frequency of releases and
10425 the number of bug fixes in the next few months.
10426 - Functional tests for all ASL/AML operators
10427 - All implicit/explicit type conversions
10428 - Bit fields and operation regions
10429 - 64-bit math support and 32-bit-only "truncated" math support
10430 - Exceptional conditions, both compiler and interpreter
10431 - Dynamic object deletion and memory leaks
10432 - ACPI 3.0 support when implemented
10433 - External interfaces to the ACPI subsystem
10436 1) ACPI CA Core Subsystem:
10438 Fixed two alignment issues on 64-bit platforms - within debug statements
10440 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
10442 field within the non-aligned ACPI generic address structure.
10444 Fixed a problem in the Increment and Decrement operators where incorrect
10445 operand resolution could result in the inadvertent modification of the
10446 original integer when the integer is passed into another method as an
10447 argument and the arg is then incremented/decremented.
10449 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
10451 BCD number were truncated during conversion.
10453 Fixed a problem in the ToDecimal operator where the length of the
10455 string could be set incorrectly too long if the input operand was a
10459 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
10461 within a buffer would prematurely terminate a compare between buffer
10464 Added a check for string overflow (>200 characters as per the ACPI
10465 specification) during the Concatenate operator with two string operands.
10467 Code and Data Size: Current and previous core subsystem library sizes are
10468 shown below. These are the code and data sizes for the acpica.lib
10470 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10471 any ACPI driver or OSPM code. The debug version of the code includes the
10472 debug output trace mechanism and has a much larger code and data size.
10474 that these values will vary depending on the efficiency of the compiler
10476 the compiler options used during generation.
10479 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10480 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10482 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10483 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10487 2) iASL Compiler/Disassembler:
10489 Allow the use of the ObjectType operator on uninitialized Locals and Args
10490 (returns 0 as per the ACPI specification).
10492 Fixed a problem where the compiler would fault if there was a syntax
10494 in the FieldName of all of the various CreateXXXField operators.
10496 Disallow the use of lower case letters within the EISAID macro, as per
10498 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
10500 U is an uppercase letter and N is a hex digit.
10503 ----------------------------------------
10504 06 October 2004. Summary of changes for version 20041006:
10506 1) ACPI CA Core Subsystem:
10508 Implemented support for the ACPI 3.0 Timer operator. This ASL function
10509 implements a 64-bit timer with 100 nanosecond granularity.
10511 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
10512 implement the ACPI 3.0 Timer operator. This allows the host OS to
10514 the timer with the best clock available. Also, it keeps the core
10516 out of the clock handling business, since the host OS (usually) performs
10519 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
10520 functions use a 64-bit address which is part of the packed ACPI Generic
10521 Address Structure. Since the structure is non-aligned, the alignment
10523 are now used to extract the address to a local variable before use.
10525 Fixed a problem where the ToInteger operator assumed all input strings
10527 hexadecimal. The operator now handles both decimal strings and hex
10529 (prefixed with "0x").
10531 Fixed a problem where the string length in the string object created as a
10532 result of the internal ConvertToString procedure could be incorrect. This
10533 potentially affected all implicit conversions and also the
10535 and ToHexString operators.
10537 Fixed two problems in the ToString operator. If the length parameter was
10538 zero, an incorrect string object was created and the value of the input
10539 length parameter was inadvertently changed from zero to Ones.
10541 Fixed a problem where the optional ResourceSource string in the
10543 resource macro was ignored.
10545 Simplified the interfaces to the internal division functions, reducing
10547 size and complexity.
10549 Code and Data Size: Current and previous core subsystem library sizes are
10550 shown below. These are the code and data sizes for the acpica.lib
10552 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10553 any ACPI driver or OSPM code. The debug version of the code includes the
10554 debug output trace mechanism and has a much larger code and data size.
10556 that these values will vary depending on the efficiency of the compiler
10558 the compiler options used during generation.
10561 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10562 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10564 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10565 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10568 2) iASL Compiler/Disassembler:
10570 Implemented support for the ACPI 3.0 Timer operator.
10572 Fixed a problem where the Default() operator was inadvertently ignored in
10574 Switch/Case block. This was a problem in the translation of the Switch
10575 statement to If...Else pairs.
10577 Added support to allow a standalone Return operator, with no parentheses
10581 Fixed a problem with code generation for the ElseIf operator where the
10582 translated Else...If parse tree was improperly constructed leading to the
10585 ----------------------------------------
10586 22 September 2004. Summary of changes for version 20040922:
10588 1) ACPI CA Core Subsystem:
10590 Fixed a problem with the implementation of the LNot() operator where
10592 was not returned for the TRUE case. Changed the code to return Ones
10594 of (!Arg) which was usually 1. This change affects iASL constant folding
10596 this operator also.
10598 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10600 initialized properly -- Now zero the entire buffer in this case where the
10601 buffer already exists.
10603 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10604 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10605 related code considerably. This will require changes/updates to all OS
10606 interface layers (OSLs.)
10608 Implemented a new external interface, AcpiInstallExceptionHandler, to
10610 a system exception handler to be installed. This handler is invoked upon
10612 run-time exception that occurs during control method execution.
10614 Added support for the DSDT in AcpiTbFindTable. This allows the
10615 DataTableRegion() operator to access the local copy of the DSDT.
10617 Code and Data Size: Current and previous core subsystem library sizes are
10618 shown below. These are the code and data sizes for the acpica.lib
10620 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10621 any ACPI driver or OSPM code. The debug version of the code includes the
10622 debug output trace mechanism and has a much larger code and data size.
10624 that these values will vary depending on the efficiency of the compiler
10626 the compiler options used during generation.
10629 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10630 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10632 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10633 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10636 2) iASL Compiler/Disassembler:
10638 Fixed a problem with constant folding and the LNot operator. LNot was
10639 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10641 could result in the generation of an incorrect folded/reduced constant.
10643 End-Of-File is now allowed within a "//"-style comment. A parse error no
10644 longer occurs if such a comment is at the very end of the input ASL
10648 Implemented the "-r" option to override the Revision in the table header.
10649 The initial use of this option will be to simplify the evaluation of the
10651 interpreter by allowing a single ASL source module to be compiled for
10653 32-bit or 64-bit integers.
10656 ----------------------------------------
10657 27 August 2004. Summary of changes for version 20040827:
10659 1) ACPI CA Core Subsystem:
10661 - Implemented support for implicit object conversion in the non-numeric
10662 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10664 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10665 the second operand is implicitly converted on the fly to match the type
10667 the first operand. For example:
10669 LEqual (Source1, Source2)
10671 Source1 and Source2 must each evaluate to an integer, a string, or a
10673 The data type of Source1 dictates the required type of Source2. Source2
10675 implicitly converted if necessary to match the type of Source1.
10677 - Updated and corrected the behavior of the string conversion support.
10679 rules concerning conversion of buffers to strings (according to the ACPI
10680 specification) are as follows:
10682 ToDecimalString - explicit byte-wise conversion of buffer to string of
10683 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10685 conversion of buffer to string of hex values (0-FF) separated by commas.
10686 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10688 copy with no transform except NULL terminated. Any other implicit buffer-
10690 string conversion - byte-wise conversion of buffer to string of hex
10692 (0-FF) separated by spaces.
10694 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10696 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10698 one byte too short in the case of a node in the root scope. This could
10699 cause a fault during debug output.
10701 - Code and Data Size: Current and previous core subsystem library sizes
10703 shown below. These are the code and data sizes for the acpica.lib
10705 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10706 any ACPI driver or OSPM code. The debug version of the code includes the
10707 debug output trace mechanism and has a much larger code and data size.
10709 that these values will vary depending on the efficiency of the compiler
10711 the compiler options used during generation.
10714 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10715 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10717 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10718 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10721 2) iASL Compiler/Disassembler:
10723 - Fixed a Linux generation error.
10726 ----------------------------------------
10727 16 August 2004. Summary of changes for version 20040816:
10729 1) ACPI CA Core Subsystem:
10731 Designed and implemented support within the AML interpreter for the so-
10732 called "implicit return". This support returns the result of the last
10734 operation within a control method, in the absence of an explicit Return()
10735 operator. A few machines depend on this behavior, even though it is not
10736 explicitly supported by the ASL language. It is optional support that
10738 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10740 Removed support for the PCI_Config address space from the internal low
10742 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10743 support was not used internally, and would not work correctly anyway
10745 the PCI bus number and segment number were not supported. There are
10746 separate interfaces for PCI configuration space access because of the
10750 Code and Data Size: Current and previous core subsystem library sizes are
10751 shown below. These are the code and data sizes for the acpica.lib
10753 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10754 any ACPI driver or OSPM code. The debug version of the code includes the
10755 debug output trace mechanism and has a much larger code and data size.
10757 that these values will vary depending on the efficiency of the compiler
10759 the compiler options used during generation.
10762 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10763 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10765 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10766 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10769 2) iASL Compiler/Disassembler:
10771 Fixed a problem where constants in ASL expressions at the root level (not
10772 within a control method) could be inadvertently truncated during code
10773 generation. This problem was introduced in the 20040715 release.
10776 ----------------------------------------
10777 15 July 2004. Summary of changes for version 20040715:
10779 1) ACPI CA Core Subsystem:
10781 Restructured the internal HW GPE interfaces to pass/track the current
10783 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10784 increase flexibility of the interfaces.
10786 Implemented a "lexicographical compare" for String and Buffer objects
10788 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10790 as per further clarification to the ACPI specification. Behavior is
10792 to C library "strcmp".
10794 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10795 external function. In the 32-bit non-debug case, the stack use has been
10796 reduced from 168 bytes to 32 bytes.
10798 Deployed a new run-time configuration flag,
10799 AcpiGbl_EnableInterpreterSlack,
10800 whose purpose is to allow the AML interpreter to forgive certain bad AML
10801 constructs. Default setting is FALSE.
10803 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10805 support code. If enabled, it allows field access to go beyond the end of
10807 region definition if the field is within the region length rounded up to
10809 next access width boundary (a common coding error.)
10811 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10812 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10814 symbols are lowercased by the latest version of the AcpiSrc tool.
10816 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10817 rename "Register" to simply "Reg" to prevent certain compilers from
10820 Code and Data Size: Current and previous core subsystem library sizes are
10821 shown below. These are the code and data sizes for the acpica.lib
10823 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10824 any ACPI driver or OSPM code. The debug version of the code includes the
10825 debug output trace mechanism and has a much larger code and data size.
10827 that these values will vary depending on the efficiency of the compiler
10829 the compiler options used during generation.
10832 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10833 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10835 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10836 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10839 2) iASL Compiler/Disassembler:
10841 Implemented full support for Package objects within the Case() operator.
10842 Note: The Break() operator is currently not supported within Case blocks
10843 (TermLists) as there is some question about backward compatibility with
10848 Fixed a problem where complex terms were not supported properly within
10852 Eliminated extraneous warning for compiler-emitted reserved names of the
10853 form "_T_x". (Used in Switch/Case operators.)
10855 Eliminated optimization messages for "_T_x" objects and small constants
10856 within the DefinitionBlock operator.
10859 ----------------------------------------
10860 15 June 2004. Summary of changes for version 20040615:
10862 1) ACPI CA Core Subsystem:
10864 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10866 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10869 All directory names in the entire source package are lower case, as they
10870 were in earlier releases.
10872 Implemented "Disassemble" command in the AML debugger that will
10874 a single control method.
10876 Code and Data Size: Current and previous core subsystem library sizes are
10877 shown below. These are the code and data sizes for the acpica.lib
10879 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10880 any ACPI driver or OSPM code. The debug version of the code includes the
10881 debug output trace mechanism and has a much larger code and data size.
10883 that these values will vary depending on the efficiency of the compiler
10885 the compiler options used during generation.
10888 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10889 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10892 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10893 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10896 2) iASL Compiler/Disassembler:
10898 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10900 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10903 All directory names in the entire source package are lower case, as they
10904 were in earlier releases.
10906 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
10909 Fixed an issue with the Windows version of the compiler where later
10911 of Windows place the FADT in the registry under the name "FADT" and not
10912 "FACP" as earlier versions did. This applies when using the -g or -
10913 d<nofilename> options. The compiler now looks for both strings as
10916 Fixed a problem with compiler namepath optimization where a namepath
10918 the Scope() operator could not be optimized if the namepath was a subpath
10920 the current scope path.
10922 ----------------------------------------
10923 27 May 2004. Summary of changes for version 20040527:
10925 1) ACPI CA Core Subsystem:
10927 Completed a new design and implementation for EBDA (Extended BIOS Data
10929 support in the RSDP scan code. The original code improperly scanned for
10931 EBDA by simply scanning from memory location 0 to 0x400. The correct
10933 is to first obtain the EBDA pointer from within the BIOS data area, then
10934 scan 1K of memory starting at the EBDA pointer. There appear to be few
10936 any machines that place the RSDP in the EBDA, however.
10938 Integrated a fix for a possible fault during evaluation of BufferField
10939 arguments. Obsolete code that was causing the problem was removed.
10941 Found and fixed a problem in the Field Support Code where data could be
10942 corrupted on a bit field read that starts on an aligned boundary but does
10943 not end on an aligned boundary. Merged the read/write "datum length"
10944 calculation code into a common procedure.
10946 Rolled in a couple of changes to the FreeBSD-specific header.
10949 Code and Data Size: Current and previous core subsystem library sizes are
10950 shown below. These are the code and data sizes for the acpica.lib
10952 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10953 any ACPI driver or OSPM code. The debug version of the code includes the
10954 debug output trace mechanism and has a much larger code and data size.
10956 that these values will vary depending on the efficiency of the compiler
10958 the compiler options used during generation.
10961 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
10962 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
10964 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
10965 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
10968 2) iASL Compiler/Disassembler:
10970 Fixed a generation warning produced by some overly-verbose compilers for
10974 ----------------------------------------
10975 14 May 2004. Summary of changes for version 20040514:
10977 1) ACPI CA Core Subsystem:
10979 Fixed a problem where hardware GPE enable bits sometimes not set properly
10980 during and after GPE method execution. Result of 04/27 changes.
10982 Removed extra "clear all GPEs" when sleeping/waking.
10984 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
10985 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
10987 the new AcpiEv* calls as appropriate.
10989 ACPI_OS_NAME was removed from the OS-specific headers. The default name
10991 now "Microsoft Windows NT" for maximum compatibility. However this can
10993 changed by modifying the acconfig.h file.
10995 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
10996 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
10998 Run _INI methods on ThermalZone objects. This is against the ACPI
10999 specification, but there is apparently ASL code in the field that has
11001 _INI methods, and apparently "other" AML interpreters execute them.
11003 Performed a full 16/32/64 bit lint that resulted in some small changes.
11005 Added a sleep simulation command to the AML debugger to test sleep code.
11007 Code and Data Size: Current and previous core subsystem library sizes are
11008 shown below. These are the code and data sizes for the acpica.lib
11010 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11011 any ACPI driver or OSPM code. The debug version of the code includes the
11012 debug output trace mechanism and has a much larger code and data size.
11014 that these values will vary depending on the efficiency of the compiler
11016 the compiler options used during generation.
11019 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11020 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11022 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11023 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11025 ----------------------------------------
11026 27 April 2004. Summary of changes for version 20040427:
11028 1) ACPI CA Core Subsystem:
11030 Completed a major overhaul of the GPE handling within ACPI CA. There are
11031 now three types of GPEs: wake-only, runtime-only, and combination
11033 The only GPEs allowed to be combination wake/run are for button-style
11034 devices such as a control-method power button, control-method sleep
11036 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
11038 referenced by any _PRW methods are marked for "runtime" and hardware
11039 enabled. Any GPE that is referenced by a _PRW method is marked for
11041 (and disabled at runtime). However, at sleep time, only those GPEs that
11042 have been specifically enabled for wake via the AcpiEnableGpe interface
11044 actually be hardware enabled.
11046 A new external interface has been added, AcpiSetGpeType(), that is meant
11048 be used by device drivers to force a GPE to a particular type. It will
11050 especially useful for the drivers for the button devices mentioned above.
11052 Completed restructuring of the ACPI CA initialization sequence so that
11053 default operation region handlers are installed before GPEs are
11055 and the _PRW methods are executed. This will prevent errors when the
11057 methods attempt to access system memory or I/O space.
11059 GPE enable/disable no longer reads the GPE enable register. We now keep
11061 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
11062 thus no longer depend on the hardware to maintain these bits.
11064 Always clear the wake status and fixed/GPE status bits before sleep, even
11067 Improved the AML debugger output for displaying the GPE blocks and their
11070 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
11074 Fixed a problem where the physical address was incorrectly calculated
11076 the Load() operator was used to directly load from an Operation Region
11078 loading from a Field object.) Also added check for minimum table length
11082 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
11085 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
11086 consistency with the other fields returned.
11088 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
11089 structure for each GPE in the system, so the size of this structure is
11092 CPU stack requirement reduction: Cleaned up the method execution and
11094 evaluation paths so that now a parameter structure is passed, instead of
11095 copying the various method parameters over and over again.
11097 In evregion.c: Correctly exit and reenter the interpreter region if and
11098 only if dispatching an operation region request to a user-installed
11100 Do not exit/reenter when dispatching to a default handler (e.g., default
11101 system memory or I/O handlers)
11104 Notes for updating drivers for the new GPE support. The following
11106 must be made to ACPI-related device drivers that are attached to one or
11108 GPEs: (This information will be added to the ACPI CA Programmer
11111 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
11113 explicitly call AcpiEnableGpe.
11114 2) There is a new interface called AcpiSetGpeType. This should be called
11115 before enabling the GPE. Also, this interface will automatically disable
11116 the GPE if it is currently enabled.
11117 3) AcpiEnableGpe no longer supports a GPE type flag.
11119 Specific drivers that must be changed:
11121 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
11122 AeGpeHandler, NULL);
11123 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
11124 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
11126 2) Button Drivers (Power, Lid, Sleep):
11127 Run _PRW method under parent device
11128 If _PRW exists: /* This is a control-method button */
11129 Extract GPE number and possibly GpeDevice
11130 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
11131 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
11133 For all other devices that have _PRWs, we automatically set the GPE type
11135 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
11137 must be done on a selective basis, usually requiring some kind of user
11139 to allow the user to pick the wake devices.
11142 Code and Data Size: Current and previous core subsystem library sizes are
11143 shown below. These are the code and data sizes for the acpica.lib
11145 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11146 any ACPI driver or OSPM code. The debug version of the code includes the
11147 debug output trace mechanism and has a much larger code and data size.
11149 that these values will vary depending on the efficiency of the compiler
11151 the compiler options used during generation.
11154 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11155 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11158 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11159 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11163 ----------------------------------------
11164 02 April 2004. Summary of changes for version 20040402:
11166 1) ACPI CA Core Subsystem:
11168 Fixed an interpreter problem where an indirect store through an ArgX
11169 parameter was incorrectly applying the "implicit conversion rules" during
11170 the store. From the ACPI specification: "If the target is a method local
11172 argument (LocalX or ArgX), no conversion is performed and the result is
11173 stored directly to the target". The new behavior is to disable implicit
11174 conversion during ALL stores to an ArgX.
11176 Changed the behavior of the _PRW method scan to ignore any and all errors
11177 returned by a given _PRW. This prevents the scan from aborting from the
11178 failure of any single _PRW.
11180 Moved the runtime configuration parameters from the global init procedure
11182 static variables in acglobal.h. This will allow the host to override the
11183 default values easily.
11185 Code and Data Size: Current and previous core subsystem library sizes are
11186 shown below. These are the code and data sizes for the acpica.lib
11188 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11189 any ACPI driver or OSPM code. The debug version of the code includes the
11190 debug output trace mechanism and has a much larger code and data size.
11192 that these values will vary depending on the efficiency of the compiler
11194 the compiler options used during generation.
11197 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11198 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11200 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11201 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11204 2) iASL Compiler/Disassembler:
11206 iASL now fully disassembles SSDTs. However, External() statements are
11208 generated automatically for unresolved symbols at this time. This is a
11209 planned feature for future implementation.
11211 Fixed a scoping problem in the disassembler that occurs when the type of
11213 target of a Scope() operator is overridden. This problem caused an
11214 incorrectly nested internal namespace to be constructed.
11216 Any warnings or errors that are emitted during disassembly are now
11218 out automatically so that the resulting file can be recompiled without
11222 ----------------------------------------
11223 26 March 2004. Summary of changes for version 20040326:
11225 1) ACPI CA Core Subsystem:
11227 Implemented support for "wake" GPEs via interaction between GPEs and the
11228 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
11229 identified as a WAKE GPE and by default will no longer be enabled at
11230 runtime. Previously, we were blindly enabling all GPEs with a
11232 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
11234 believe this has been the cause of thousands of "spurious" GPEs on some
11237 This new GPE behavior is can be reverted to the original behavior (enable
11238 ALL GPEs at runtime) via a runtime flag.
11240 Fixed a problem where aliased control methods could not access objects
11241 properly. The proper scope within the namespace was not initialized
11242 (transferred to the target of the aliased method) before executing the
11245 Fixed a potential race condition on internal object deletion on the
11247 object in AcpiEvaluateObject.
11249 Integrated a fix for resource descriptors where both _MEM and _MTP were
11250 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
11251 wide, 0x0F instead of 0x03.)
11253 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
11256 fault in some cases.
11258 Updated Notify() values for debug statements in evmisc.c
11260 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
11262 Code and Data Size: Current and previous core subsystem library sizes are
11263 shown below. These are the code and data sizes for the acpica.lib
11265 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11266 any ACPI driver or OSPM code. The debug version of the code includes the
11267 debug output trace mechanism and has a much larger code and data size.
11269 that these values will vary depending on the efficiency of the compiler
11271 the compiler options used during generation.
11275 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11276 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11278 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11279 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11281 ----------------------------------------
11282 11 March 2004. Summary of changes for version 20040311:
11284 1) ACPI CA Core Subsystem:
11286 Fixed a problem where errors occurring during the parse phase of control
11287 method execution did not abort cleanly. For example, objects created and
11288 installed in the namespace were not deleted. This caused all subsequent
11289 invocations of the method to return the AE_ALREADY_EXISTS exception.
11291 Implemented a mechanism to force a control method to "Serialized"
11293 if the method attempts to create namespace objects. (The root of the
11294 AE_ALREADY_EXISTS problem.)
11296 Implemented support for the predefined _OSI "internal" control method.
11297 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
11299 "Windows 2001.1", and can be easily upgraded for new strings as
11301 This feature will allow "other" operating systems to execute the fully
11302 tested, "Windows" code path through the ASL code
11304 Global Lock Support: Now allows multiple acquires and releases with any
11305 internal thread. Removed concept of "owning thread" for this special
11308 Fixed two functions that were inappropriately declaring large objects on
11310 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
11312 method execution considerably.
11314 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
11315 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
11317 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
11318 defined on the machine.
11320 Implemented two runtime options: One to force all control method
11322 to "Serialized" to mimic Windows behavior, another to disable _OSI
11324 if it causes problems on a given machine.
11326 Code and Data Size: Current and previous core subsystem library sizes are
11327 shown below. These are the code and data sizes for the acpica.lib
11329 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11330 any ACPI driver or OSPM code. The debug version of the code includes the
11331 debug output trace mechanism and has a much larger code and data size.
11333 that these values will vary depending on the efficiency of the compiler
11335 the compiler options used during generation.
11338 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11339 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11341 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11342 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11344 2) iASL Compiler/Disassembler:
11346 Fixed an array size problem for FreeBSD that would cause the compiler to
11349 ----------------------------------------
11350 20 February 2004. Summary of changes for version 20040220:
11353 1) ACPI CA Core Subsystem:
11355 Implemented execution of _SxD methods for Device objects in the
11356 GetObjectInfo interface.
11358 Fixed calls to _SST method to pass the correct arguments.
11360 Added a call to _SST on wake to restore to "working" state.
11362 Check for End-Of-Buffer failure case in the WalkResources interface.
11364 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
11365 structures to the beginning of the file.
11367 After wake, clear GPE status register(s) before enabling GPEs.
11369 After wake, clear/enable power button. (Perhaps we should clear/enable
11371 fixed events upon wake.)
11373 Fixed a couple of possible memory leaks in the Namespace manager.
11375 Integrated latest acnetbsd.h file.
11377 ----------------------------------------
11378 11 February 2004. Summary of changes for version 20040211:
11381 1) ACPI CA Core Subsystem:
11383 Completed investigation and implementation of the call-by-reference
11384 mechanism for control method arguments.
11386 Fixed a problem where a store of an object into an indexed package could
11387 fail if the store occurs within a different method than the method that
11388 created the package.
11390 Fixed a problem where the ToDecimal operator could return incorrect
11393 Fixed a problem where the CopyObject operator could fail on some of the
11395 obscure objects (e.g., Reference objects.)
11397 Improved the output of the Debug object to display buffer, package, and
11400 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
11402 the expected result.
11404 Added permanent ACPI_REPORT_ERROR macros for all instances of the
11405 ACPI_AML_INTERNAL exception.
11407 Integrated latest version of acfreebsd.h
11409 ----------------------------------------
11410 16 January 2004. Summary of changes for version 20040116:
11412 The purpose of this release is primarily to update the copyright years in
11413 each module, thus causing a huge number of diffs. There are a few small
11414 functional changes, however.
11416 1) ACPI CA Core Subsystem:
11418 Improved error messages when there is a problem finding one or more of
11420 required base ACPI tables
11422 Reintroduced the definition of APIC_HEADER in actbl.h
11424 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
11426 Removed extraneous reference to NewObj in dsmthdat.c
11430 Fixed a problem introduced in December that disabled the correct
11432 of Resource Templates
11435 ----------------------------------------
11436 03 December 2003. Summary of changes for version 20031203:
11438 1) ACPI CA Core Subsystem:
11440 Changed the initialization of Operation Regions during subsystem
11441 init to perform two entire walks of the ACPI namespace; The first
11442 to initialize the regions themselves, the second to execute the
11443 _REG methods. This fixed some interdependencies across _REG
11444 methods found on some machines.
11446 Fixed a problem where a Store(Local0, Local1) could simply update
11447 the object reference count, and not create a new copy of the
11448 object if the Local1 is uninitialized.
11450 Implemented support for the _SST reserved method during sleep
11453 Implemented support to clear the SLP_TYP and SLP_EN bits when
11454 waking up, this is apparently required by some machines.
11456 When sleeping, clear the wake status only if SleepState is not S5.
11458 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
11459 pointer arithmetic advanced a string pointer too far.
11461 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
11462 could be returned if the requested table has not been loaded.
11464 Within the support for IRQ resources, restructured the handling of
11465 the active and edge/level bits.
11467 Fixed a few problems in AcpiPsxExecute() where memory could be
11468 leaked under certain error conditions.
11470 Improved error messages for the cases where the ACPI mode could
11473 Code and Data Size: Current and previous core subsystem library
11474 sizes are shown below. These are the code and data sizes for the
11475 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11476 these values do not include any ACPI driver or OSPM code. The
11477 debug version of the code includes the debug output trace
11478 mechanism and has a much larger code and data size. Note that
11479 these values will vary depending on the efficiency of the compiler
11480 and the compiler options used during generation.
11482 Previous Release (20031029):
11483 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11484 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11486 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11487 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11489 2) iASL Compiler/Disassembler:
11491 Implemented a fix for the iASL disassembler where a bad index was
11492 generated. This was most noticeable on 64-bit platforms
11495 ----------------------------------------
11496 29 October 2003. Summary of changes for version 20031029:
11498 1) ACPI CA Core Subsystem:
11501 Fixed a problem where a level-triggered GPE with an associated
11502 _Lxx control method was incorrectly cleared twice.
11504 Fixed a problem with the Field support code where an access can
11505 occur beyond the end-of-region if the field is non-aligned but
11506 extends to the very end of the parent region (resulted in an
11507 AE_AML_REGION_LIMIT exception.)
11509 Fixed a problem with ACPI Fixed Events where an RT Clock handler
11510 would not get invoked on an RTC event. The RTC event bitmasks for
11511 the PM1 registers were not being initialized properly.
11513 Implemented support for executing _STA and _INI methods for
11514 Processor objects. Although this is currently not part of the
11515 ACPI specification, there is existing ASL code that depends on the
11516 init-time execution of these methods.
11518 Implemented and deployed a GetDescriptorName function to decode
11519 the various types of internal descriptors. Guards against null
11520 descriptors during debug output also.
11522 Implemented and deployed a GetNodeName function to extract the 4-
11523 character namespace node name. This function simplifies the debug
11524 and error output, as well as guarding against null pointers during
11527 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
11528 simplify the debug and error output of 64-bit integers. This
11529 macro replaces the HIDWORD and LODWORD macros for dumping these
11532 Updated the implementation of the Stall() operator to only call
11533 AcpiOsStall(), and also return an error if the operand is larger
11534 than 255. This preserves the required behavior of not
11535 relinquishing the processor, as would happen if AcpiOsSleep() was
11536 called for "long stalls".
11538 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
11539 initialized are now treated as NOOPs.
11541 Cleaned up a handful of warnings during 64-bit generation.
11543 Fixed a reported error where and incorrect GPE number was passed
11544 to the GPE dispatch handler. This value is only used for error
11545 output, however. Used this opportunity to clean up and streamline
11546 the GPE dispatch code.
11548 Code and Data Size: Current and previous core subsystem library
11549 sizes are shown below. These are the code and data sizes for the
11550 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11551 these values do not include any ACPI driver or OSPM code. The
11553 debug version of the code includes the debug output trace
11554 mechanism and has a much larger code and data size. Note that
11555 these values will vary depending on the efficiency of the compiler
11556 and the compiler options used during generation.
11558 Previous Release (20031002):
11559 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11560 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11562 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11563 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11566 2) iASL Compiler/Disassembler:
11568 Updated the iASL compiler to return an error if the operand to the
11569 Stall() operator is larger than 255.
11572 ----------------------------------------
11573 02 October 2003. Summary of changes for version 20031002:
11576 1) ACPI CA Core Subsystem:
11578 Fixed a problem with Index Fields where the index was not
11579 incremented for fields that require multiple writes to the
11580 index/data registers (Fields that are wider than the data
11583 Fixed a problem with all Field objects where a write could go
11584 beyond the end-of-field if the field was larger than the access
11585 granularity and therefore required multiple writes to complete the
11586 request. An extra write beyond the end of the field could happen
11589 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11590 would incorrectly be returned if the width of the Data Register
11591 was larger than the specified field access width.
11593 Completed fixes for LoadTable() and Unload() and verified their
11594 operation. Implemented full support for the "DdbHandle" object
11595 throughout the ACPI CA subsystem.
11597 Implemented full support for the MADT and ECDT tables in the ACPI
11598 CA header files. Even though these tables are not directly
11599 consumed by ACPI CA, the header definitions are useful for ACPI
11602 Integrated resource descriptor fixes posted to the Linux ACPI
11603 list. This included checks for minimum descriptor length, and
11604 support for trailing NULL strings within descriptors that have
11605 optional string elements.
11607 Code and Data Size: Current and previous core subsystem library
11608 sizes are shown below. These are the code and data sizes for the
11609 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11610 these values do not include any ACPI driver or OSPM code. The
11611 debug version of the code includes the debug output trace
11612 mechanism and has a much larger code and data size. Note that
11613 these values will vary depending on the efficiency of the compiler
11614 and the compiler options used during generation.
11616 Previous Release (20030918):
11617 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11618 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11620 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11621 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11626 Implemented detection of non-ASCII characters within the input
11627 source ASL file. This catches attempts to compile binary (AML)
11628 files early in the compile, with an informative error message.
11630 Fixed a problem where the disassembler would fault if the output
11631 filename could not be generated or if the output file could not be
11634 ----------------------------------------
11635 18 September 2003. Summary of changes for version 20030918:
11638 1) ACPI CA Core Subsystem:
11640 Found and fixed a longstanding problem with the late execution of
11641 the various deferred AML opcodes (such as Operation Regions,
11642 Buffer Fields, Buffers, and Packages). If the name string
11643 specified for the name of the new object placed the object in a
11644 scope other than the current scope, the initialization/execution
11645 of the opcode failed. The solution to this problem was to
11646 implement a mechanism where the late execution of such opcodes
11647 does not attempt to lookup/create the name a second time in an
11648 incorrect scope. This fixes the "region size computed
11649 incorrectly" problem.
11651 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11652 Global Lock AE_BAD_PARAMETER error.
11654 Fixed several 64-bit issues with prototypes, casting and data
11657 Removed duplicate prototype from acdisasm.h
11659 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11661 Code and Data Size: Current and previous core subsystem library
11662 sizes are shown below. These are the code and data sizes for the
11663 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11664 these values do not include any ACPI driver or OSPM code. The
11665 debug version of the code includes the debug output trace
11666 mechanism and has a much larger code and data size. Note that
11667 these values will vary depending on the efficiency of the compiler
11668 and the compiler options used during generation.
11672 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11673 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11675 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11676 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11681 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11682 correct sleep time in seconds.
11684 ----------------------------------------
11685 14 July 2003. Summary of changes for version 20030619:
11687 1) ACPI CA Core Subsystem:
11689 Parse SSDTs in order discovered, as opposed to reverse order
11692 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11699 Dynamically allocate SDT list (suggested by Andi Kleen)
11701 proc function return value cleanups (Andi Kleen)
11703 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11705 Make it so acpismp=force works (reported by Andrew Morton)
11708 ----------------------------------------
11709 19 June 2003. Summary of changes for version 20030619:
11711 1) ACPI CA Core Subsystem:
11713 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11715 Do not acquire a semaphore in the S5 shutdown path.
11717 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11719 Fix sleep/stall code reversal. (Andi Kleen)
11721 Revert a change having to do with control method calling
11726 acpiphp update (Takayoshi Kochi)
11728 Export acpi_disabled for sonypi (Stelian Pop)
11730 Mention acpismp=force in config help
11732 Re-add acpitable.c and acpismp=force. This improves backwards
11734 compatibility and also cleans up the code to a significant degree.
11736 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11738 ----------------------------------------
11739 22 May 2003. Summary of changes for version 20030522:
11741 1) ACPI CA Core Subsystem:
11743 Found and fixed a reported problem where an AE_NOT_FOUND error
11744 occurred occasionally during _BST evaluation. This turned out to
11745 be an Owner ID allocation issue where a called method did not get
11746 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11747 ID UINT16 would wraparound so that the ID would be the same as the
11748 caller's and the called method would delete the caller's
11751 Implemented extended error reporting for control methods that are
11752 aborted due to a run-time exception. Output includes the exact
11753 AML instruction that caused the method abort, a dump of the method
11754 locals and arguments at the time of the abort, and a trace of all
11755 nested control method calls.
11757 Modified the interpreter to allow the creation of buffers of zero
11758 length from the AML code. Implemented new code to ensure that no
11759 attempt is made to actually allocate a memory buffer (of length
11760 zero) - instead, a simple buffer object with a NULL buffer pointer
11761 and length zero is created. A warning is no longer issued when
11762 the AML attempts to create a zero-length buffer.
11764 Implemented a workaround for the "leading asterisk issue" in
11765 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11766 asterisk is automatically removed if present in any HID, UID, or
11767 CID strings. The iASL compiler will still flag this asterisk as
11770 Implemented full support for _CID methods that return a package of
11771 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11772 now additionally returns a device _CID list if present. This
11773 required a change to the external interface in order to pass an
11774 ACPI_BUFFER object as a parameter since the _CID list is of
11777 Fixed a problem with the new AE_SAME_HANDLER exception where
11778 handler initialization code did not know about this exception.
11780 Code and Data Size: Current and previous core subsystem library
11781 sizes are shown below. These are the code and data sizes for the
11782 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11783 these values do not include any ACPI driver or OSPM code. The
11784 debug version of the code includes the debug output trace
11785 mechanism and has a much larger code and data size. Note that
11786 these values will vary depending on the efficiency of the compiler
11787 and the compiler options used during generation.
11789 Previous Release (20030509):
11790 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11791 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11793 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11794 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11799 Fixed a bug in which we would reinitialize the ACPI interrupt
11800 after it was already working, thus disabling all ACPI and the IRQs
11801 for any other device sharing the interrupt. (Thanks to Stian
11804 Toshiba driver update (John Belmonte)
11806 Return only 0 or 1 for our interrupt handler status (Andrew
11812 Fixed a reported problem where multiple (nested) ElseIf()
11813 statements were not handled correctly by the compiler, resulting
11814 in incorrect warnings and incorrect AML code. This was a problem
11815 in both the ASL parser and the code generator.
11820 Added changes to existing interfaces, new exception codes, and new
11821 text concerning reference count object management versus garbage
11824 ----------------------------------------
11825 09 May 2003. Summary of changes for version 20030509.
11828 1) ACPI CA Core Subsystem:
11830 Changed the subsystem initialization sequence to hold off
11831 installation of address space handlers until the hardware has been
11832 initialized and the system has entered ACPI mode. This is because
11833 the installation of space handlers can cause _REG methods to be
11834 run. Previously, the _REG methods could potentially be run before
11835 ACPI mode was enabled.
11837 Fixed some memory leak issues related to address space handler and
11838 notify handler installation. There were some problems with the
11839 reference count mechanism caused by the fact that the handler
11840 objects are shared across several namespace objects.
11842 Fixed a reported problem where reference counts within the
11843 namespace were not properly updated when named objects created by
11844 method execution were deleted.
11846 Fixed a reported problem where multiple SSDTs caused a deletion
11847 issue during subsystem termination. Restructured the table data
11848 structures to simplify the linked lists and the related code.
11850 Fixed a problem where the table ID associated with secondary
11851 tables (SSDTs) was not being propagated into the namespace objects
11852 created by those tables. This would only present a problem for
11853 tables that are unloaded at run-time, however.
11855 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11856 type as the length parameter (instead of UINT32).
11858 Solved a long-standing problem where an ALREADY_EXISTS error
11859 appears on various systems. This problem could happen when there
11860 are multiple PCI_Config operation regions under a single PCI root
11861 bus. This doesn't happen very frequently, but there are some
11862 systems that do this in the ASL.
11864 Fixed a reported problem where the internal DeleteNode function
11865 was incorrectly handling the case where a namespace node was the
11866 first in the parent's child list, and had additional peers (not
11867 the only child, but first in the list of children.)
11869 Code and Data Size: Current core subsystem library sizes are shown
11870 below. These are the code and data sizes for the acpica.lib
11871 produced by the Microsoft Visual C++ 6.0 compiler, and these
11872 values do not include any ACPI driver or OSPM code. The debug
11873 version of the code includes the debug output trace mechanism and
11874 has a much larger code and data size. Note that these values will
11875 vary depending on the efficiency of the compiler and the compiler
11876 options used during generation.
11879 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11880 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11882 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11883 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11888 Allow ":" in OS override string (Ducrot Bruno)
11890 Kobject fix (Greg KH)
11893 3 iASL Compiler/Disassembler:
11895 Fixed a problem in the generation of the C source code files (AML
11896 is emitted in C source statements for BIOS inclusion) where the
11897 Ascii dump that appears within a C comment at the end of each line
11898 could cause a compile time error if the AML sequence happens to
11899 have an open comment or close comment sequence embedded.
11902 ----------------------------------------
11903 24 April 2003. Summary of changes for version 20030424.
11906 1) ACPI CA Core Subsystem:
11908 Support for big-endian systems has been implemented. Most of the
11909 support has been invisibly added behind big-endian versions of the
11910 ACPI_MOVE_* macros.
11912 Fixed a problem in AcpiHwDisableGpeBlock() and
11913 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
11914 low level hardware write routine. The offset parameter was
11915 actually eliminated from the low level read/write routines because
11916 they had become obsolete.
11918 Fixed a problem where a handler object was deleted twice during
11919 the removal of a fixed event handler.
11924 A fix for SMP systems with link devices was contributed by
11928 (2.5) Return whether we handled the interrupt in our IRQ handler.
11929 (Linux ISRs no longer return void, so we can propagate the handler
11930 return value from the ACPI CA core back to the OS.)
11936 The ACPI CA Programmer Reference has been updated to reflect new
11937 interfaces and changes to existing interfaces.
11939 ----------------------------------------
11940 28 March 2003. Summary of changes for version 20030328.
11942 1) ACPI CA Core Subsystem:
11944 The GPE Block Device support has been completed. New interfaces
11945 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
11946 interfaces (enable, disable, clear, getstatus) have been split
11947 into separate interfaces for Fixed Events and General Purpose
11948 Events (GPEs) in order to support GPE Block Devices properly.
11950 Fixed a problem where the error message "Failed to acquire
11951 semaphore" would appear during operations on the embedded
11954 Code and Data Size: Current core subsystem library sizes are shown
11955 below. These are the code and data sizes for the acpica.lib
11956 produced by the Microsoft Visual C++ 6.0 compiler, and these
11957 values do not include any ACPI driver or OSPM code. The debug
11958 version of the code includes the debug output trace mechanism and
11959 has a much larger code and data size. Note that these values will
11960 vary depending on the efficiency of the compiler and the compiler
11961 options used during generation.
11964 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
11965 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
11967 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
11968 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
11971 ----------------------------------------
11972 28 February 2003. Summary of changes for version 20030228.
11975 1) ACPI CA Core Subsystem:
11977 The GPE handling and dispatch code has been completely overhauled
11978 in preparation for support of GPE Block Devices (ID ACPI0006).
11979 This affects internal data structures and code only; there should
11980 be no differences visible externally. One new file has been
11983 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
11984 fields that are used to determine the GPE block lengths. The
11985 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
11986 structures are ignored. This is per the ACPI specification but it
11987 isn't very clear. The full 256 Block 0/1 GPEs are now supported
11988 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
11990 In the SCI interrupt handler, removed the read of the PM1_CONTROL
11991 register to look at the SCI_EN bit. On some machines, this read
11992 causes an SMI event and greatly slows down SCI events. (This may
11993 in fact be the cause of slow battery status response on some
11996 Fixed a problem where a store of a NULL string to a package object
11997 could cause the premature deletion of the object. This was seen
11998 during execution of the battery _BIF method on some systems,
11999 resulting in no battery data being returned.
12001 Added AcpiWalkResources interface to simplify parsing of resource
12004 Code and Data Size: Current core subsystem library sizes are shown
12005 below. These are the code and data sizes for the acpica.lib
12006 produced by the Microsoft Visual C++ 6.0 compiler, and these
12007 values do not include any ACPI driver or OSPM code. The debug
12008 version of the code includes the debug output trace mechanism and
12009 has a much larger code and data size. Note that these values will
12010 vary depending on the efficiency of the compiler and the compiler
12011 options used during generation.
12014 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12015 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12017 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12018 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12023 S3 fixes (Ole Rohne)
12025 Update ACPI PHP driver with to use new acpi_walk_resource API
12028 Add S4BIOS support (Pavel Machek)
12030 Map in entire table before performing checksum (John Stultz)
12032 Expand the mem= cmdline to allow the specification of reserved and
12033 ACPI DATA blocks (Pavel Machek)
12035 Never use ACPI on VISWS
12037 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
12039 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
12040 causing us to think that some systems support C2 when they really
12043 Do not count processor objects for non-present CPUs (Thanks to
12049 Fixed a problem where ASL include files could not be found and
12052 Added support for the _PDC reserved name.
12055 ----------------------------------------
12056 22 January 2003. Summary of changes for version 20030122.
12059 1) ACPI CA Core Subsystem:
12061 Added a check for constructs of the form: Store (Local0, Local0)
12062 where Local0 is not initialized. Apparently, some BIOS
12063 programmers believe that this is a NOOP. Since this store doesn't
12064 do anything anyway, the new prototype behavior will ignore this
12065 error. This is a case where we can relax the strict checking in
12066 the interpreter in the name of compatibility.
12071 The AcpiSrc Source Conversion Utility has been released with the
12072 Linux package for the first time. This is the utility that is
12073 used to convert the ACPI CA base source code to the Linux version.
12075 (Both) Handle P_BLK lengths shorter than 6 more gracefully
12077 (Both) Move more headers to include/acpi, and delete an unused
12080 (Both) Move drivers/acpi/include directory to include/acpi
12082 (Both) Boot functions don't use cmdline, so don't pass it around
12084 (Both) Remove include of unused header (Adrian Bunk)
12086 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
12088 former now also includes the latter, acpiphp.h only needs the one,
12091 (2.5) Make it possible to select method of bios restoring after S3
12092 resume. [=> no more ugly ifdefs] (Pavel Machek)
12094 (2.5) Make proc write interfaces work (Pavel Machek)
12096 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
12098 (2.5) Break out ACPI Perf code into its own module, under cpufreq
12099 (Dominik Brodowski)
12101 (2.4) S4BIOS support (Ducrot Bruno)
12103 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
12109 Added support to disassemble SSDT and PSDTs.
12111 Implemented support to obtain SSDTs from the Windows registry if
12115 ----------------------------------------
12116 09 January 2003. Summary of changes for version 20030109.
12118 1) ACPI CA Core Subsystem:
12120 Changed the behavior of the internal Buffer-to-String conversion
12121 function. The current ACPI specification states that the contents
12122 of the buffer are "converted to a string of two-character
12123 hexadecimal numbers, each separated by a space". Unfortunately,
12124 this definition is not backwards compatible with existing ACPI 1.0
12125 implementations (although the behavior was not defined in the ACPI
12126 1.0 specification). The new behavior simply copies data from the
12127 buffer to the string until a null character is found or the end of
12128 the buffer is reached. The new String object is always null
12129 terminated. This problem was seen during the generation of _BIF
12130 battery data where incorrect strings were returned for battery
12131 type, etc. This will also require an errata to the ACPI
12134 Renamed all instances of NATIVE_UINT and NATIVE_INT to
12135 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
12137 Copyright in all module headers (both Linux and non-Linux) has be
12140 Code and Data Size: Current core subsystem library sizes are shown
12141 below. These are the code and data sizes for the acpica.lib
12142 produced by the Microsoft Visual C++ 6.0 compiler, and these
12143 values do not include any ACPI driver or OSPM code. The debug
12144 version of the code includes the debug output trace mechanism and
12145 has a much larger code and data size. Note that these values will
12146 vary depending on the efficiency of the compiler and the compiler
12147 options used during generation.
12150 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12151 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12153 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12154 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12159 Fixed an oops on module insertion/removal (Matthew Tippett)
12161 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
12163 (2.5) Replace pr_debug (Randy Dunlap)
12165 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
12167 (Both) Eliminate spawning of thread from timer callback, in favor
12170 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
12172 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
12174 (Both) Add missing statics to button.c (Pavel Machek)
12176 Several changes have been made to the source code translation
12177 utility that generates the Linux Code in order to make the code
12180 All typedefs on structs and unions have been removed in keeping
12181 with the Linux coding style.
12183 Removed the non-Linux SourceSafe module revision number from each
12186 Completed major overhaul of symbols to be lowercased for linux.
12187 Doubled the number of symbols that are lowercased.
12189 Fixed a problem where identifiers within procedure headers and
12190 within quotes were not fully lower cased (they were left with a
12193 Some C macros whose only purpose is to allow the generation of 16-
12194 bit code are now completely removed in the Linux code, increasing
12195 readability and maintainability.
12197 ----------------------------------------
12199 12 December 2002. Summary of changes for version 20021212.
12202 1) ACPI CA Core Subsystem:
12204 Fixed a problem where the creation of a zero-length AML Buffer
12205 would cause a fault.
12207 Fixed a problem where a Buffer object that pointed to a static AML
12208 buffer (in an ACPI table) could inadvertently be deleted, causing
12211 Fixed a problem where a user buffer (passed in to the external
12212 ACPI CA interfaces) could be overwritten if the buffer was too
12213 small to complete the operation, causing memory corruption.
12215 Fixed a problem in the Buffer-to-String conversion code where a
12216 string of length one was always returned, regardless of the size
12217 of the input Buffer object.
12219 Removed the NATIVE_CHAR data type across the entire source due to
12220 lack of need and lack of consistent use.
12222 Code and Data Size: Current core subsystem library sizes are shown
12223 below. These are the code and data sizes for the acpica.lib
12224 produced by the Microsoft Visual C++ 6.0 compiler, and these
12225 values do not include any ACPI driver or OSPM code. The debug
12226 version of the code includes the debug output trace mechanism and
12227 has a much larger code and data size. Note that these values will
12228 vary depending on the efficiency of the compiler and the compiler
12229 options used during generation.
12232 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12233 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12235 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12236 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12239 ----------------------------------------
12240 05 December 2002. Summary of changes for version 20021205.
12242 1) ACPI CA Core Subsystem:
12244 Fixed a problem where a store to a String or Buffer object could
12245 cause corruption of the DSDT if the object type being stored was
12246 the same as the target object type and the length of the object
12247 being stored was equal to or smaller than the original (existing)
12248 target object. This was seen to cause corruption of battery _BIF
12249 buffers if the _BIF method modified the buffer on the fly.
12251 Fixed a problem where an internal error was generated if a control
12252 method invocation was used in an OperationRegion, Buffer, or
12253 Package declaration. This was caused by the deferred parsing of
12254 the control method and thus the deferred creation of the internal
12255 method object. The solution to this problem was to create the
12256 internal method object at the moment the method is encountered in
12257 the first pass - so that subsequent references to the method will
12258 able to obtain the required parameter count and thus properly
12259 parse the method invocation. This problem presented itself as an
12260 AE_AML_INTERNAL during the pass 1 parse phase during table load.
12262 Fixed a problem where the internal String object copy routine did
12263 not always allocate sufficient memory for the target String object
12264 and caused memory corruption. This problem was seen to cause
12265 "Allocation already present in list!" errors as memory allocation
12268 Implemented a new function for the evaluation of namespace objects
12269 that allows the specification of the allowable return object
12270 types. This simplifies a lot of code that checks for a return
12271 object of one or more specific objects returned from the
12272 evaluation (such as _STA, etc.) This may become and external
12273 function if it would be useful to ACPI-related drivers.
12275 Completed another round of prefixing #defines with "ACPI_" for
12278 Completed additional code restructuring to allow more modular
12279 linking for iASL compiler and AcpiExec. Several files were split
12280 creating new files. New files: nsparse.c dsinit.c evgpe.c
12282 Implemented an abort mechanism to terminate an executing control
12283 method via the AML debugger. This feature is useful for debugging
12284 control methods that depend (wait) for specific hardware
12287 Code and Data Size: Current core subsystem library sizes are shown
12288 below. These are the code and data sizes for the acpica.lib
12289 produced by the Microsoft Visual C++ 6.0 compiler, and these
12290 values do not include any ACPI driver or OSPM code. The debug
12291 version of the code includes the debug output trace mechanism and
12292 has a much larger code and data size. Note that these values will
12293 vary depending on the efficiency of the compiler and the compiler
12294 options used during generation.
12297 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12298 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12300 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12301 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12304 2) iASL Compiler/Disassembler
12306 Fixed a compiler code generation problem for "Interrupt" Resource
12307 Descriptors. If specified in the ASL, the optional "Resource
12308 Source Index" and "Resource Source" fields were not inserted into
12309 the correct location within the AML resource descriptor, creating
12310 an invalid descriptor.
12312 Fixed a disassembler problem for "Interrupt" resource descriptors.
12313 The optional "Resource Source Index" and "Resource Source" fields
12317 ----------------------------------------
12318 22 November 2002. Summary of changes for version 20021122.
12321 1) ACPI CA Core Subsystem:
12323 Fixed a reported problem where an object stored to a Method Local
12324 or Arg was not copied to a new object during the store - the
12325 object pointer was simply copied to the Local/Arg. This caused
12326 all subsequent operations on the Local/Arg to also affect the
12327 original source of the store operation.
12329 Fixed a problem where a store operation to a Method Local or Arg
12330 was not completed properly if the Local/Arg contained a reference
12331 (from RefOf) to a named field. The general-purpose store-to-
12332 namespace-node code is now used so that this case is handled
12335 Fixed a problem where the internal object copy routine would cause
12336 a protection fault if the object being copied was a Package and
12337 contained either 1) a NULL package element or 2) a nested sub-
12340 Fixed a problem with the GPE initialization that resulted from an
12341 ambiguity in the ACPI specification. One section of the
12342 specification states that both the address and length of the GPE
12343 block must be zero if the block is not supported. Another section
12344 implies that only the address need be zero if the block is not
12345 supported. The code has been changed so that both the address and
12346 the length must be non-zero to indicate a valid GPE block (i.e.,
12347 if either the address or the length is zero, the GPE block is
12350 Code and Data Size: Current core subsystem library sizes are shown
12351 below. These are the code and data sizes for the acpica.lib
12352 produced by the Microsoft Visual C++ 6.0 compiler, and these
12353 values do not include any ACPI driver or OSPM code. The debug
12354 version of the code includes the debug output trace mechanism and
12355 has a much larger code and data size. Note that these values will
12356 vary depending on the efficiency of the compiler and the compiler
12357 options used during generation.
12360 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12361 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12363 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12364 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12369 Cleaned up EC driver. Exported an external EC read/write
12370 interface. By going through this, other drivers (most notably
12371 sonypi) will be able to serialize access to the EC.
12374 3) iASL Compiler/Disassembler
12376 Implemented support to optionally generate include files for both
12377 ASM and C (the -i switch). This simplifies BIOS development by
12378 automatically creating include files that contain external
12379 declarations for the symbols that are created within the
12381 (optionally generated) ASM and C AML source files.
12384 ----------------------------------------
12385 15 November 2002. Summary of changes for version 20021115.
12387 1) ACPI CA Core Subsystem:
12389 Fixed a memory leak problem where an error during resolution of
12391 method arguments during a method invocation from another method
12392 failed to cleanup properly by deleting all successfully resolved
12395 Fixed a problem where the target of the Index() operator was not
12396 correctly constructed if the source object was a package. This
12397 problem has not been detected because the use of a target operand
12398 with Index() is very rare.
12400 Fixed a problem with the Index() operator where an attempt was
12401 made to delete the operand objects twice.
12403 Fixed a problem where an attempt was made to delete an operand
12404 twice during execution of the CondRefOf() operator if the target
12407 Implemented the first of perhaps several internal create object
12408 functions that create and initialize a specific object type. This
12409 consolidates duplicated code wherever the object is created, thus
12410 shrinking the size of the subsystem.
12412 Implemented improved debug/error messages for errors that occur
12413 during nested method invocations. All executing method pathnames
12414 are displayed (with the error) as the call stack is unwound - thus
12417 Fixed a problem introduced in the 10/02 release that caused
12418 premature deletion of a buffer object if a buffer was used as an
12419 ASL operand where an integer operand is required (Thus causing an
12420 implicit object conversion from Buffer to Integer.) The change in
12421 the 10/02 release was attempting to fix a memory leak (albeit
12424 Code and Data Size: Current core subsystem library sizes are shown
12425 below. These are the code and data sizes for the acpica.lib
12426 produced by the Microsoft Visual C++ 6.0 compiler, and these
12427 values do not include any ACPI driver or OSPM code. The debug
12428 version of the code includes the debug output trace mechanism and
12429 has a much larger code and data size. Note that these values will
12430 vary depending on the efficiency of the compiler and the compiler
12431 options used during generation.
12434 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12435 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12437 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12438 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12443 Changed the implementation of the ACPI semaphores to use down()
12444 instead of down_interruptable(). It is important that the
12445 execution of ACPI control methods not be interrupted by signals.
12446 Methods must run to completion, or the system may be left in an
12447 unknown/unstable state.
12449 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
12453 3) iASL Compiler/Disassembler
12456 Changed the default location of output files. All output files
12457 are now placed in the current directory by default instead of in
12458 the directory of the source file. This change may affect some
12459 existing makefiles, but it brings the behavior of the compiler in
12460 line with other similar tools. The location of the output files
12461 can be overridden with the -p command line switch.
12464 ----------------------------------------
12465 11 November 2002. Summary of changes for version 20021111.
12468 0) ACPI Specification 2.0B is released and is now available at:
12469 http://www.acpi.info/index.html
12472 1) ACPI CA Core Subsystem:
12474 Implemented support for the ACPI 2.0 SMBus Operation Regions.
12475 This includes the early detection and handoff of the request to
12476 the SMBus region handler (avoiding all of the complex field
12477 support code), and support for the bidirectional return packet
12478 from an SMBus write operation. This paves the way for the
12479 development of SMBus drivers in each host operating system.
12481 Fixed a problem where the semaphore WAIT_FOREVER constant was
12482 defined as 32 bits, but must be 16 bits according to the ACPI
12483 specification. This had the side effect of causing ASL
12484 Mutex/Event timeouts even though the ASL code requested a wait
12485 forever. Changed all internal references to the ACPI timeout
12486 parameter to 16 bits to prevent future problems. Changed the name
12487 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
12489 Code and Data Size: Current core subsystem library sizes are shown
12490 below. These are the code and data sizes for the acpica.lib
12491 produced by the Microsoft Visual C++ 6.0 compiler, and these
12492 values do not include any ACPI driver or OSPM code. The debug
12493 version of the code includes the debug output trace mechanism and
12494 has a much larger code and data size. Note that these values will
12495 vary depending on the efficiency of the compiler and the compiler
12496 options used during generation.
12499 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12500 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12502 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12503 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12508 Module loading/unloading fixes (John Cagle)
12511 3) iASL Compiler/Disassembler
12513 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
12515 Implemented support for the disassembly of all SMBus protocol
12516 keywords (SMBQuick, SMBWord, etc.)
12518 ----------------------------------------
12519 01 November 2002. Summary of changes for version 20021101.
12522 1) ACPI CA Core Subsystem:
12524 Fixed a problem where platforms that have a GPE1 block but no GPE0
12525 block were not handled correctly. This resulted in a "GPE
12526 overlap" error message. GPE0 is no longer required.
12528 Removed code added in the previous release that inserted nodes
12529 into the namespace in alphabetical order. This caused some side-
12530 effects on various machines. The root cause of the problem is
12531 still under investigation since in theory, the internal ordering
12532 of the namespace nodes should not matter.
12535 Enhanced error reporting for the case where a named object is not
12536 found during control method execution. The full ACPI namepath
12537 (name reference) of the object that was not found is displayed in
12540 Note: as a result of the overhaul of the namespace object types in
12541 the previous release, the namespace nodes for the predefined
12542 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
12543 instead of ACPI_TYPE_ANY. This simplifies the namespace
12544 management code but may affect code that walks the namespace tree
12545 looking for specific object types.
12547 Code and Data Size: Current core subsystem library sizes are shown
12548 below. These are the code and data sizes for the acpica.lib
12549 produced by the Microsoft Visual C++ 6.0 compiler, and these
12550 values do not include any ACPI driver or OSPM code. The debug
12551 version of the code includes the debug output trace mechanism and
12552 has a much larger code and data size. Note that these values will
12553 vary depending on the efficiency of the compiler and the compiler
12554 options used during generation.
12557 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12558 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12560 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12561 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12566 Fixed a problem introduced in the previous release where the
12567 Processor and Thermal objects were not recognized and installed in
12568 /proc. This was related to the scope type change described above.
12571 3) iASL Compiler/Disassembler
12573 Implemented the -g option to get all of the required ACPI tables
12574 from the registry and save them to files (Windows version of the
12575 compiler only.) The required tables are the FADT, FACS, and DSDT.
12577 Added ACPI table checksum validation during table disassembly in
12578 order to catch corrupted tables.
12581 ----------------------------------------
12582 22 October 2002. Summary of changes for version 20021022.
12584 1) ACPI CA Core Subsystem:
12586 Implemented a restriction on the Scope operator that the target
12587 must already exist in the namespace at the time the operator is
12588 encountered (during table load or method execution). In other
12589 words, forward references are not allowed and Scope() cannot
12590 create a new object. This changes the previous behavior where the
12591 interpreter would create the name if not found. This new behavior
12592 correctly enables the search-to-root algorithm during namespace
12593 lookup of the target name. Because of this upsearch, this fixes
12594 the known Compaq _SB_.OKEC problem and makes both the AML
12595 interpreter and iASL compiler compatible with other ACPI
12598 Completed a major overhaul of the internal ACPI object types for
12599 the ACPI Namespace and the associated operand objects. Many of
12600 these types had become obsolete with the introduction of the two-
12601 pass namespace load. This cleanup simplifies the code and makes
12602 the entire namespace load mechanism much clearer and easier to
12605 Improved debug output for tracking scope opening/closing to help
12606 diagnose scoping issues. The old scope name as well as the new
12607 scope name are displayed. Also improved error messages for
12608 problems with ASL Mutex objects and error messages for GPE
12611 Cleaned up the namespace dump code, removed obsolete code.
12613 All string output (for all namespace/object dumps) now uses the
12614 common ACPI string output procedure which handles escapes properly
12615 and does not emit non-printable characters.
12617 Fixed some issues with constants in the 64-bit version of the
12618 local C library (utclib.c)
12623 EC Driver: No longer attempts to acquire the Global Lock at
12627 3) iASL Compiler/Disassembler
12629 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12630 2 opcodes outside of a control method. This means that the
12631 "executable" operators (versus the "namespace" operators) cannot
12632 be used at the table level; they can only be used within a control
12635 Implemented the restriction on the Scope() operator where the
12636 target must already exist in the namespace at the time the
12637 operator is encountered (during ASL compilation). In other words,
12638 forward references are not allowed and Scope() cannot create a new
12639 object. This makes the iASL compiler compatible with other ACPI
12640 implementations and makes the Scope() implementation adhere to the
12641 ACPI specification.
12643 Fixed a problem where namepath optimization for the Alias operator
12644 was optimizing the wrong path (of the two namepaths.) This caused
12645 a "Missing alias link" error message.
12647 Fixed a problem where an "unknown reserved name" warning could be
12648 incorrectly generated for names like "_SB" when the trailing
12649 underscore is not used in the original ASL.
12651 Fixed a problem where the reserved name check did not handle
12652 NamePaths with multiple NameSegs correctly. The first nameseg of
12653 the NamePath was examined instead of the last NameSeg.
12656 ----------------------------------------
12658 02 October 2002. Summary of changes for this release.
12661 1) ACPI CA Core Subsystem version 20021002:
12663 Fixed a problem where a store/copy of a string to an existing
12664 string did not always set the string length properly in the String
12667 Fixed a reported problem with the ToString operator where the
12668 behavior was identical to the ToHexString operator instead of just
12669 simply converting a raw buffer to a string data type.
12671 Fixed a problem where CopyObject and the other "explicit"
12672 conversion operators were not updating the internal namespace node
12673 type as part of the store operation.
12675 Fixed a memory leak during implicit source operand conversion
12676 where the original object was not deleted if it was converted to a
12677 new object of a different type.
12679 Enhanced error messages for all problems associated with namespace
12680 lookups. Common procedure generates and prints the lookup name as
12681 well as the formatted status.
12683 Completed implementation of a new design for the Alias support
12684 within the namespace. The existing design did not handle the case
12685 where a new object was assigned to one of the two names due to the
12686 use of an explicit conversion operator, resulting in the two names
12687 pointing to two different objects. The new design simply points
12688 the Alias name to the original name node - not to the object.
12689 This results in a level of indirection that must be handled in the
12690 name resolution mechanism.
12692 Code and Data Size: Current core subsystem library sizes are shown
12693 below. These are the code and data sizes for the acpica.lib
12694 produced by the Microsoft Visual C++ 6.0 compiler, and these
12695 values do not include any ACPI driver or OSPM code. The debug
12696 version of the code includes the debug output trace mechanism and
12697 has a larger code and data size. Note that these values will vary
12698 depending on the efficiency of the compiler and the compiler
12699 options used during generation.
12702 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12703 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12705 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12706 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12711 Initialize thermal driver's timer before it is used. (Knut
12714 Allow handling negative celsius values. (Kochi Takayoshi)
12716 Fix thermal management and make trip points. R/W (Pavel Machek)
12718 Fix /proc/acpi/sleep. (P. Christeas)
12720 IA64 fixes. (David Mosberger)
12722 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12724 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12728 3) iASL Compiler/Disassembler
12730 Clarified some warning/error messages.
12733 ----------------------------------------
12734 18 September 2002. Summary of changes for this release.
12737 1) ACPI CA Core Subsystem version 20020918:
12739 Fixed a reported problem with reference chaining (via the Index()
12740 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12741 The definition of these operators includes the dereferencing of
12742 all chained references to return information on the base object.
12744 Fixed a problem with stores to indexed package elements - the
12745 existing code would not complete the store if an "implicit
12746 conversion" was not performed. In other words, if the existing
12747 object (package element) was to be replaced completely, the code
12748 didn't handle this case.
12750 Relaxed typechecking on the ASL "Scope" operator to allow the
12751 target name to refer to an object of type Integer, String, or
12752 Buffer, in addition to the scoping object types (Device,
12753 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12754 This allows existing AML code that has workarounds for a bug in
12755 Windows to function properly. A warning is issued, however. This
12756 affects both the AML interpreter and the iASL compiler. Below is
12757 an example of this type of ASL code:
12763 Fixed some reported problems with 64-bit integer support in the
12764 local implementation of C library functions (clib.c)
12769 Use ACPI fix map region instead of IOAPIC region, since it is
12770 undefined in non-SMP.
12772 Ensure that the SCI has the proper polarity and trigger, even on
12773 systems that do not have an interrupt override entry in the MADT.
12775 2.5 big driver reorganization (Pat Mochel)
12777 Use early table mapping code from acpitable.c (Andi Kleen)
12779 New blacklist entries (Andi Kleen)
12781 Blacklist improvements. Split blacklist code out into a separate
12782 file. Move checking the blacklist to very early. Previously, we
12783 would use ACPI tables, and then halfway through init, check the
12784 blacklist -- too late. Now, it's early enough to completely fall-
12788 3) iASL Compiler/Disassembler version 20020918:
12790 Fixed a problem where the typechecking code didn't know that an
12791 alias could point to a method. In other words, aliases were not
12792 being dereferenced during typechecking.
12795 ----------------------------------------
12796 29 August 2002. Summary of changes for this release.
12798 1) ACPI CA Core Subsystem Version 20020829:
12800 If the target of a Scope() operator already exists, it must be an
12801 object type that actually opens a scope -- such as a Device,
12802 Method, Scope, etc. This is a fatal runtime error. Similar error
12803 check has been added to the iASL compiler also.
12805 Tightened up the namespace load to disallow multiple names in the
12806 same scope. This previously was allowed if both objects were of
12807 the same type. (i.e., a lookup was the same as entering a new
12813 Ensure that the ACPI interrupt has the proper trigger and
12816 local_irq_disable is extraneous. (Matthew Wilcox)
12818 Make "acpi=off" actually do what it says, and not use the ACPI
12819 interpreter *or* the tables.
12821 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12825 3) iASL Compiler/Disassembler Version 20020829:
12827 Implemented namepath optimization for name declarations. For
12828 example, a declaration like "Method (\_SB_.ABCD)" would get
12829 optimized to "Method (ABCD)" if the declaration is within the
12830 \_SB_ scope. This optimization is in addition to the named
12831 reference path optimization first released in the previous
12832 version. This would seem to complete all possible optimizations
12833 for namepaths within the ASL/AML.
12835 If the target of a Scope() operator already exists, it must be an
12836 object type that actually opens a scope -- such as a Device,
12837 Method, Scope, etc.
12839 Implemented a check and warning for unreachable code in the same
12840 block below a Return() statement.
12842 Fixed a problem where the listing file was not generated if the
12843 compiler aborted if the maximum error count was exceeded (200).
12845 Fixed a problem where the typechecking of method return values was
12846 broken. This includes the check for a return value when the
12847 method is invoked as a TermArg (a return value is expected.)
12849 Fixed a reported problem where EOF conditions during a quoted
12850 string or comment caused a fault.
12853 ----------------------------------------
12854 15 August 2002. Summary of changes for this release.
12856 1) ACPI CA Core Subsystem Version 20020815:
12858 Fixed a reported problem where a Store to a method argument that
12859 contains a reference did not perform the indirect store correctly.
12860 This problem was created during the conversion to the new
12861 reference object model - the indirect store to a method argument
12862 code was not updated to reflect the new model.
12864 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12865 handle corner cases, and improve code legibility (Kochi Takayoshi)
12867 Fixed a problem with the pathname parsing for the carat (^)
12868 prefix. The heavy use of the carat operator by the new namepath
12869 optimization in the iASL compiler uncovered a problem with the AML
12870 interpreter handling of this prefix. In the case where one or
12871 more carats precede a single nameseg, the nameseg was treated as
12872 standalone and the search rule (to root) was inadvertently
12873 applied. This could cause both the iASL compiler and the
12874 interpreter to find the wrong object or to miss the error that
12875 should occur if the object does not exist at that exact pathname.
12877 Found and fixed the problem where the HP Pavilion DSDT would not
12878 load. This was a relatively minor tweak to the table loading code
12879 (a problem caused by the unexpected encounter with a method
12880 invocation not within a control method), but it does not solve the
12881 overall issue of the execution of AML code at the table level.
12882 This investigation is still ongoing.
12884 Code and Data Size: Current core subsystem library sizes are shown
12885 below. These are the code and data sizes for the acpica.lib
12886 produced by the Microsoft Visual C++ 6.0 compiler, and these
12887 values do not include any ACPI driver or OSPM code. The debug
12888 version of the code includes the debug output trace mechanism and
12889 has a larger code and data size. Note that these values will vary
12890 depending on the efficiency of the compiler and the compiler
12891 options used during generation.
12894 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
12895 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
12897 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12898 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12903 Remove redundant slab.h include (Brad Hards)
12905 Fix several bugs in thermal.c (Herbert Nachtnebel)
12907 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
12909 Change acpi_system_suspend to use updated irq functions (Pavel
12912 Export acpi_get_firmware_table (Matthew Wilcox)
12914 Use proper root proc entry for ACPI (Kochi Takayoshi)
12916 Fix early-boot table parsing (Bjorn Helgaas)
12919 3) iASL Compiler/Disassembler
12921 Reworked the compiler options to make them more consistent and to
12922 use two-letter options where appropriate. We were running out of
12923 sensible letters. This may break some makefiles, so check the
12924 current options list by invoking the compiler with no parameters.
12926 Completed the design and implementation of the ASL namepath
12927 optimization option for the compiler. This option optimizes all
12928 references to named objects to the shortest possible path. The
12929 first attempt tries to utilize a single nameseg (4 characters) and
12930 the "search-to-root" algorithm used by the interpreter. If that
12931 cannot be used (because either the name is not in the search path
12932 or there is a conflict with another object with the same name),
12933 the pathname is optimized using the carat prefix (usually a
12934 shorter string than specifying the entire path from the root.)
12936 Implemented support to obtain the DSDT from the Windows registry
12937 (when the disassembly option is specified with no input file).
12938 Added this code as the implementation for AcpiOsTableOverride in
12939 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
12940 utility) to scan memory for the DSDT to the AcpiOsTableOverride
12941 function in the DOS OSL to make the disassembler truly OS
12944 Implemented a new option to disassemble and compile in one step.
12945 When used without an input filename, this option will grab the
12946 DSDT from the local machine, disassemble it, and compile it in one
12949 Added a warning message for invalid escapes (a backslash followed
12950 by any character other than the allowable escapes). This catches
12951 the quoted string error "\_SB_" (which should be "\\_SB_" ).
12953 Also, there are numerous instances in the ACPI specification where
12956 Added a compiler option to disable all optimizations. This is
12957 basically the "compatibility mode" because by using this option,
12958 the AML code will come out exactly the same as other ASL
12961 Added error messages for incorrectly ordered dependent resource
12962 functions. This includes: missing EndDependentFn macro at end of
12963 dependent resource list, nested dependent function macros (both
12964 start and end), and missing StartDependentFn macro. These are
12965 common errors that should be caught at compile time.
12967 Implemented _OSI support for the disassembler and compiler. _OSI
12968 must be included in the namespace for proper disassembly (because
12969 the disassembler must know the number of arguments.)
12971 Added an "optimization" message type that is optional (off by
12972 default). This message is used for all optimizations - including
12973 constant folding, integer optimization, and namepath optimization.
12975 ----------------------------------------
12976 25 July 2002. Summary of changes for this release.
12979 1) ACPI CA Core Subsystem Version 20020725:
12981 The AML Disassembler has been enhanced to produce compilable ASL
12982 code and has been integrated into the iASL compiler (see below) as
12983 well as the single-step disassembly for the AML debugger and the
12984 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
12985 resource templates and macros are fully supported. The
12986 disassembler has been tested on over 30 different AML files,
12987 producing identical AML when the resulting disassembled ASL file
12988 is recompiled with the same ASL compiler.
12990 Modified the Resource Manager to allow zero interrupts and zero
12991 dma channels during the GetCurrentResources call. This was
12992 causing problems on some platforms.
12994 Added the AcpiOsRedirectOutput interface to the OSL to simplify
12995 output redirection for the AcpiOsPrintf and AcpiOsVprintf
12998 Code and Data Size: Current core subsystem library sizes are shown
12999 below. These are the code and data sizes for the acpica.lib
13000 produced by the Microsoft Visual C++ 6.0 compiler, and these
13001 values do not include any ACPI driver or OSPM code. The debug
13002 version of the code includes the debug output trace mechanism and
13003 has a larger code and data size. Note that these values will vary
13004 depending on the efficiency of the compiler and the compiler
13005 options used during generation.
13008 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13009 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13011 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13012 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13017 Fixed a panic in the EC driver (Dominik Brodowski)
13019 Implemented checksum of the R/XSDT itself during Linux table scan
13025 The AML disassembler is integrated into the compiler. The "-d"
13026 option invokes the disassembler to completely disassemble an
13027 input AML file, producing as output a text ASL file with the
13028 extension ".dsl" (to avoid name collisions with existing .asl
13029 source files.) A future enhancement will allow the disassembler
13030 to obtain the BIOS DSDT from the registry under Windows.
13032 Fixed a problem with the VendorShort and VendorLong resource
13033 descriptors where an invalid AML sequence was created.
13035 Implemented a fix for BufferData term in the ASL parser. It was
13036 inadvertently defined twice, allowing invalid syntax to pass and
13037 causing reduction conflicts.
13039 Fixed a problem where the Ones opcode could get converted to a
13040 value of zero if "Ones" was used where a byte, word or dword value
13041 was expected. The 64-bit value is now truncated to the correct
13042 size with the correct value.
13046 ----------------------------------------
13047 02 July 2002. Summary of changes for this release.
13050 1) ACPI CA Core Subsystem Version 20020702:
13052 The Table Manager code has been restructured to add several new
13053 features. Tables that are not required by the core subsystem
13054 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
13055 validated in any way and are returned from AcpiGetFirmwareTable if
13056 requested. The AcpiOsTableOverride interface is now called for
13057 each table that is loaded by the subsystem in order to allow the
13058 host to override any table it chooses. Previously, only the DSDT
13059 could be overridden. Added one new files, tbrsdt.c and
13062 Fixed a problem with the conversion of internal package objects to
13063 external objects (when a package is returned from a control
13064 method.) The return buffer length was set to zero instead of the
13065 proper length of the package object.
13067 Fixed a reported problem with the use of the RefOf and DeRefOf
13068 operators when passing reference arguments to control methods. A
13069 new type of Reference object is used internally for references
13070 produced by the RefOf operator.
13072 Added additional error messages in the Resource Manager to explain
13073 AE_BAD_DATA errors when they occur during resource parsing.
13075 Split the AcpiEnableSubsystem into two primitives to enable a
13076 finer granularity initialization sequence. These two calls should
13077 be called in this order: AcpiEnableSubsystem (flags),
13078 AcpiInitializeObjects (flags). The flags parameter remains the
13084 Updated the ACPI utilities module to understand the new style of
13085 fully resolved package objects that are now returned from the core
13086 subsystem. This eliminates errors of the form:
13088 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
13089 acpi_utils-0430 [145] acpi_evaluate_reference:
13090 Invalid element in package (not a device reference)
13092 The method evaluation utility uses the new buffer allocation
13093 scheme instead of calling AcpiEvaluate Object twice.
13095 Added support for ECDT. This allows the use of the Embedded
13097 Controller before the namespace has been fully initialized, which
13098 is necessary for ACPI 2.0 support, and for some laptops to
13099 initialize properly. (Laptops using ECDT are still rare, so only
13100 limited testing was performed of the added functionality.)
13102 Fixed memory leaks in the EC driver.
13104 Eliminated a brittle code structure in acpi_bus_init().
13106 Eliminated the acpi_evaluate() helper function in utils.c. It is
13107 no longer needed since acpi_evaluate_object can optionally
13108 allocate memory for the return object.
13110 Implemented fix for keyboard hang when getting battery readings on
13111 some systems (Stephen White)
13113 PCI IRQ routing update (Dominik Brodowski)
13115 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
13118 ----------------------------------------
13119 11 June 2002. Summary of changes for this release.
13122 1) ACPI CA Core Subsystem Version 20020611:
13124 Fixed a reported problem where constants such as Zero and One
13125 appearing within _PRT packages were not handled correctly within
13126 the resource manager code. Originally reported against the ASL
13127 compiler because the code generator now optimizes integers to
13128 their minimal AML representation (i.e. AML constants if possible.)
13129 The _PRT code now handles all AML constant opcodes correctly
13130 (Zero, One, Ones, Revision).
13132 Fixed a problem with the Concatenate operator in the AML
13133 interpreter where a buffer result object was incorrectly marked as
13134 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
13136 All package sub-objects are now fully resolved before they are
13137 returned from the external ACPI interfaces. This means that name
13138 strings are resolved to object handles, and constant operators
13139 (Zero, One, Ones, Revision) are resolved to Integers.
13141 Implemented immediate resolution of the AML Constant opcodes
13142 (Zero, One, Ones, Revision) to Integer objects upon detection
13143 within the AML stream. This has simplified and reduced the
13144 generated code size of the subsystem by eliminating about 10
13145 switch statements for these constants (which previously were
13146 contained in Reference objects.) The complicating issues are that
13147 the Zero opcode is used as a "placeholder" for unspecified
13148 optional target operands and stores to constants are defined to be
13151 Code and Data Size: Current core subsystem library sizes are shown
13152 below. These are the code and data sizes for the acpica.lib
13153 produced by the Microsoft Visual C++ 6.0 compiler, and these
13154 values do not include any ACPI driver or OSPM code. The debug
13155 version of the code includes the debug output trace mechanism and
13156 has a larger code and data size. Note that these values will vary
13157 depending on the efficiency of the compiler and the compiler
13158 options used during generation.
13161 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13162 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13164 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13165 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13171 Added preliminary support for obtaining _TRA data for PCI root
13172 bridges (Bjorn Helgaas).
13175 3) iASL Compiler Version X2046:
13177 Fixed a problem where the "_DDN" reserved name was defined to be a
13178 control method with one argument. There are no arguments, and
13179 _DDN does not have to be a control method.
13181 Fixed a problem with the Linux version of the compiler where the
13182 source lines printed with error messages were the wrong lines.
13183 This turned out to be the "LF versus CR/LF" difference between
13184 Windows and Unix. This appears to be the longstanding issue
13185 concerning listing output and error messages.
13187 Fixed a problem with the Linux version of compiler where opcode
13188 names within error messages were wrong. This was caused by a
13189 slight difference in the output of the Flex tool on Linux versus
13192 Fixed a problem with the Linux compiler where the hex output files
13193 contained some garbage data caused by an internal buffer overrun.
13196 ----------------------------------------
13197 17 May 2002. Summary of changes for this release.
13200 1) ACPI CA Core Subsystem Version 20020517:
13202 Implemented a workaround to an BIOS bug discovered on the HP
13203 OmniBook where the FADT revision number and the table size are
13204 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
13205 behavior is to fallback to using only the ACPI 1.0 fields of the
13206 FADT if the table is too small to be a ACPI 2.0 table as claimed
13207 by the revision number. Although this is a BIOS bug, this is a
13208 case where the workaround is simple enough and with no side
13209 effects, so it seemed prudent to add it. A warning message is
13212 Implemented minimum size checks for the fixed-length ACPI tables -
13213 - the FADT and FACS, as well as consistency checks between the
13214 revision number and the table size.
13216 Fixed a reported problem in the table override support where the
13217 new table pointer was incorrectly treated as a physical address
13218 instead of a logical address.
13220 Eliminated the use of the AE_AML_ERROR exception and replaced it
13221 with more descriptive codes.
13223 Fixed a problem where an exception would occur if an ASL Field was
13224 defined with no named Field Units underneath it (used by some
13227 Code and Data Size: Current core subsystem library sizes are shown
13228 below. These are the code and data sizes for the acpica.lib
13229 produced by the Microsoft Visual C++ 6.0 compiler, and these
13230 values do not include any ACPI driver or OSPM code. The debug
13231 version of the code includes the debug output trace mechanism and
13232 has a larger code and data size. Note that these values will vary
13233 depending on the efficiency of the compiler and the compiler
13234 options used during generation.
13237 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13238 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13240 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13241 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13247 Much work done on ACPI init (MADT and PCI IRQ routing support).
13248 (Paul D. and Dominik Brodowski)
13250 Fix PCI IRQ-related panic on boot (Sam Revitch)
13252 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
13254 Fix "MHz" typo (Dominik Brodowski)
13256 Fix RTC year 2000 issue (Dominik Brodowski)
13258 Preclude multiple button proc entries (Eric Brunet)
13260 Moved arch-specific code out of include/platform/aclinux.h
13262 3) iASL Compiler Version X2044:
13264 Implemented error checking for the string used in the EISAID macro
13265 (Usually used in the definition of the _HID object.) The code now
13266 strictly enforces the PnP format - exactly 7 characters, 3
13267 uppercase letters and 4 hex digits.
13269 If a raw string is used in the definition of the _HID object
13270 (instead of the EISAID macro), the string must contain all
13271 alphanumeric characters (e.g., "*PNP0011" is not allowed because
13274 Implemented checking for invalid use of ACPI reserved names for
13275 most of the name creation operators (Name, Device, Event, Mutex,
13276 OperationRegion, PowerResource, Processor, and ThermalZone.)
13277 Previously, this check was only performed for control methods.
13279 Implemented an additional check on the Name operator to emit an
13280 error if a reserved name that must be implemented in ASL as a
13281 control method is used. We know that a reserved name must be a
13282 method if it is defined with input arguments.
13284 The warning emitted when a namespace object reference is not found
13285 during the cross reference phase has been changed into an error.
13286 The "External" directive should be used for names defined in other
13290 4) Tools and Utilities
13292 The 16-bit tools (adump16 and aexec16) have been regenerated and
13295 Fixed a problem with the output of both acpidump and adump16 where
13296 the indentation of closing parentheses and brackets was not
13298 aligned properly with the parent block.
13301 ----------------------------------------
13302 03 May 2002. Summary of changes for this release.
13305 1) ACPI CA Core Subsystem Version 20020503:
13307 Added support a new OSL interface that allows the host operating
13309 system software to override the DSDT found in the firmware -
13310 AcpiOsTableOverride. With this interface, the OSL can examine the
13311 version of the firmware DSDT and replace it with a different one
13314 Added new external interfaces for accessing ACPI registers from
13315 device drivers and other system software - AcpiGetRegister and
13316 AcpiSetRegister. This was simply an externalization of the
13317 existing AcpiHwBitRegister interfaces.
13319 Fixed a regression introduced in the previous build where the
13320 ASL/AML CreateField operator always returned an error,
13321 "destination must be a NS Node".
13323 Extended the maximum time (before failure) to successfully enable
13324 ACPI mode to 3 seconds.
13326 Code and Data Size: Current core subsystem library sizes are shown
13327 below. These are the code and data sizes for the acpica.lib
13328 produced by the Microsoft Visual C++ 6.0 compiler, and these
13329 values do not include any ACPI driver or OSPM code. The debug
13330 version of the code includes the debug output trace mechanism and
13331 has a larger code and data size. Note that these values will vary
13332 depending on the efficiency of the compiler and the compiler
13333 options used during generation.
13336 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13337 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13339 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13340 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13345 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
13346 free. While 3 out of 4 of our in-house systems work fine, the last
13347 one still hangs when testing the LAPIC timer.
13349 Renamed many files in 2.5 kernel release to omit "acpi_" from the
13352 Added warning on boot for Presario 711FR.
13354 Sleep improvements (Pavel Machek)
13356 ACPI can now be built without CONFIG_PCI enabled.
13358 IA64: Fixed memory map functions (JI Lee)
13361 3) iASL Compiler Version X2043:
13363 Added support to allow the compiler to be integrated into the MS
13364 VC++ development environment for one-button compilation of single
13365 files or entire projects -- with error-to-source-line mapping.
13367 Implemented support for compile-time constant folding for the
13368 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
13369 specification. This allows the ASL writer to use expressions
13370 instead of Integer/Buffer/String constants in terms that must
13371 evaluate to constants at compile time and will also simplify the
13372 emitted AML in any such sub-expressions that can be folded
13373 (evaluated at compile-time.) This increases the size of the
13374 compiler significantly because a portion of the ACPI CA AML
13375 interpreter is included within the compiler in order to pre-
13376 evaluate constant expressions.
13379 Fixed a problem with the "Unicode" ASL macro that caused the
13380 compiler to fault. (This macro is used in conjunction with the
13381 _STR reserved name.)
13383 Implemented an AML opcode optimization to use the Zero, One, and
13384 Ones opcodes where possible to further reduce the size of integer
13385 constants and thus reduce the overall size of the generated AML
13388 Implemented error checking for new reserved terms for ACPI version
13391 Implemented the -qr option to display the current list of ACPI
13392 reserved names known to the compiler.
13394 Implemented the -qc option to display the current list of ASL
13395 operators that are allowed within constant expressions and can
13396 therefore be folded at compile time if the operands are constants.
13401 Updated the Programmer's Reference for new interfaces, data types,
13402 and memory allocation model options.
13404 Updated the iASL Compiler User Reference to apply new format and
13405 add information about new features and options.
13407 ----------------------------------------
13408 19 April 2002. Summary of changes for this release.
13410 1) ACPI CA Core Subsystem Version 20020419:
13412 The source code base for the Core Subsystem has been completely
13413 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
13414 versions. The Lint option files used are included in the
13415 /acpi/generate/lint directory.
13417 Implemented enhanced status/error checking across the entire
13418 Hardware manager subsystem. Any hardware errors (reported from
13419 the OSL) are now bubbled up and will abort a running control
13423 Fixed a problem where the per-ACPI-table integer width (32 or 64)
13424 was stored only with control method nodes, causing a fault when
13425 non-control method code was executed during table loading. The
13426 solution implemented uses a global variable to indicate table
13427 width across the entire ACPI subsystem. Therefore, ACPI CA does
13428 not support mixed integer widths across different ACPI tables
13431 Fixed a problem where NULL extended fields (X fields) in an ACPI
13432 2.0 ACPI FADT caused the table load to fail. Although the
13433 existing ACPI specification is a bit fuzzy on this topic, the new
13434 behavior is to fall back on a ACPI 1.0 field if the corresponding
13435 ACPI 2.0 X field is zero (even though the table revision indicates
13436 a full ACPI 2.0 table.) The ACPI specification will be updated to
13437 clarify this issue.
13439 Fixed a problem with the SystemMemory operation region handler
13440 where memory was always accessed byte-wise even if the AML-
13441 specified access width was larger than a byte. This caused
13442 problems on systems with memory-mapped I/O. Memory is now
13443 accessed with the width specified. On systems that do not support
13444 non-aligned transfers, a check is made to guarantee proper address
13445 alignment before proceeding in order to avoid an AML-caused
13446 alignment fault within the kernel.
13449 Fixed a problem with the ExtendedIrq resource where only one byte
13450 of the 4-byte Irq field was extracted.
13452 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
13453 function was out of date and required a rewrite.
13455 Code and Data Size: Current core subsystem library sizes are shown
13456 below. These are the code and data sizes for the acpica.lib
13457 produced by the Microsoft Visual C++ 6.0 compiler, and these
13458 values do not include any ACPI driver or OSPM code. The debug
13459 version of the code includes the debug output trace mechanism and
13460 has a larger code and data size. Note that these values will vary
13461 depending on the efficiency of the compiler and the compiler
13462 options used during generation.
13465 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13466 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13468 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13469 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13474 PCI IRQ routing fixes (Dominik Brodowski)
13477 3) iASL Compiler Version X2042:
13479 Implemented an additional compile-time error check for a field
13480 unit whose size + minimum access width would cause a run-time
13481 access beyond the end-of-region. Previously, only the field size
13482 itself was checked.
13484 The Core subsystem and iASL compiler now share a common parse
13485 object in preparation for compile-time evaluation of the type
13486 3/4/5 ASL operators.
13489 ----------------------------------------
13490 Summary of changes for this release: 03_29_02
13492 1) ACPI CA Core Subsystem Version 20020329:
13494 Implemented support for late evaluation of TermArg operands to
13495 Buffer and Package objects. This allows complex expressions to be
13496 used in the declarations of these object types.
13498 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
13499 1.0, if the field was larger than 32 bits, it was returned as a
13500 buffer - otherwise it was returned as an integer. In ACPI 2.0,
13501 the field is returned as a buffer only if the field is larger than
13502 64 bits. The TableRevision is now considered when making this
13503 conversion to avoid incompatibility with existing ASL code.
13505 Implemented logical addressing for AcpiOsGetRootPointer. This
13506 allows an RSDP with either a logical or physical address. With
13507 this support, the host OS can now override all ACPI tables with
13508 one logical RSDP. Includes implementation of "typed" pointer
13509 support to allow a common data type for both physical and logical
13510 pointers internally. This required a change to the
13511 AcpiOsGetRootPointer interface.
13513 Implemented the use of ACPI 2.0 Generic Address Structures for all
13514 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
13515 mapped I/O for these ACPI features.
13517 Initialization now ignores not only non-required tables (All
13518 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
13519 not validate the table headers of unrecognized tables.
13521 Fixed a problem where a notify handler could only be
13522 installed/removed on an object of type Device. All "notify"
13524 objects are now supported -- Devices, Processor, Power, and
13527 Removed most verbosity from the ACPI_DB_INFO debug level. Only
13528 critical information is returned when this debug level is enabled.
13530 Code and Data Size: Current core subsystem library sizes are shown
13531 below. These are the code and data sizes for the acpica.lib
13532 produced by the Microsoft Visual C++ 6.0 compiler, and these
13533 values do not include any ACPI driver or OSPM code. The debug
13534 version of the code includes the debug output trace mechanism and
13535 has a larger code and data size. Note that these values will vary
13536 depending on the efficiency of the compiler and the compiler
13537 options used during generation.
13540 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13541 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13543 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13544 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13549 The processor driver (acpi_processor.c) now fully supports ACPI
13550 2.0-based processor performance control (e.g. Intel(R)
13551 SpeedStep(TM) technology) Note that older laptops that only have
13552 the Intel "applet" interface are not supported through this. The
13553 'limit' and 'performance' interface (/proc) are fully functional.
13554 [Note that basic policy for controlling performance state
13555 transitions will be included in the next version of ospmd.] The
13556 idle handler was modified to more aggressively use C2, and PIIX4
13557 errata handling underwent a complete overhaul (big thanks to
13558 Dominik Brodowski).
13560 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13561 based devices in the ACPI namespace are now dynamically bound
13562 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13563 This allows, among other things, ACPI to resolve bus numbers for
13564 subordinate PCI bridges.
13566 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13567 entries defined underneath PCI bridges.
13569 Added IBM 600E to bad bios list due to invalid _ADR value for
13570 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13572 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13573 (acpi.c, mpparse.c) -- stay tuned.
13575 Added back visual differentiation between fixed-feature and
13576 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13577 button/power/PWRF) to simplify button identification.
13579 We no longer use -Wno-unused when compiling debug. Please ignore
13580 any "_THIS_MODULE defined but not used" messages.
13582 Can now shut down the system using "magic sysrq" key.
13585 3) iASL Compiler version 2041:
13587 Fixed a problem where conversion errors for hex/octal/decimal
13588 constants were not reported.
13590 Implemented a fix for the General Register template Address field.
13591 This field was 8 bits when it should be 64.
13593 Fixed a problem where errors/warnings were no longer being emitted
13594 within the listing output file.
13596 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13597 exactly 4 characters, alphanumeric only.
13602 ----------------------------------------
13603 Summary of changes for this release: 03_08_02
13606 1) ACPI CA Core Subsystem Version 20020308:
13608 Fixed a problem with AML Fields where the use of the "AccessAny"
13609 keyword could cause an interpreter error due to attempting to read
13610 or write beyond the end of the parent Operation Region.
13612 Fixed a problem in the SystemMemory Operation Region handler where
13613 an attempt was made to map memory beyond the end of the region.
13614 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13615 errors on some Linux systems.
13617 Fixed a problem where the interpreter/namespace "search to root"
13618 algorithm was not functioning for some object types. Relaxed the
13619 internal restriction on the search to allow upsearches for all
13620 external object types as well as most internal types.
13625 We now use safe_halt() macro versus individual calls to sti | hlt.
13627 Writing to the processor limit interface should now work. "echo 1"
13628 will increase the limit, 2 will decrease, and 0 will reset to the
13635 Fixed segfault on Linux version.
13638 ----------------------------------------
13639 Summary of changes for this release: 02_25_02
13641 1) ACPI CA Core Subsystem:
13644 Fixed a problem where the GPE bit masks were not initialized
13645 properly, causing erratic GPE behavior.
13647 Implemented limited support for multiple calling conventions. The
13648 code can be generated with either the VPL (variable parameter
13649 list, or "C") convention, or the FPL (fixed parameter list, or
13650 "Pascal") convention. The core subsystem is about 3.4% smaller
13651 when generated with FPL.
13656 Re-add some /proc/acpi/event functionality that was lost during
13659 Resolved issue with /proc events for fixed-feature buttons showing
13660 up as the system device.
13662 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13664 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13666 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13668 Fixed limit interface & usage to fix bugs with passive cooling
13671 Restructured PRT support.
13674 ----------------------------------------
13675 Summary of changes for this label: 02_14_02
13678 1) ACPI CA Core Subsystem:
13680 Implemented support in AcpiLoadTable to allow loading of FACS and
13683 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13684 been removed. All 64-bit platforms should be migrated to the ACPI
13685 2.0 tables. The actbl71.h header has been removed from the source
13688 All C macros defined within the subsystem have been prefixed with
13689 "ACPI_" to avoid collision with other system include files.
13691 Removed the return value for the two AcpiOsPrint interfaces, since
13692 it is never used and causes lint warnings for ignoring the return
13695 Added error checking to all internal mutex acquire and release
13696 calls. Although a failure from one of these interfaces is
13697 probably a fatal system error, these checks will cause the
13698 immediate abort of the currently executing method or interface.
13700 Fixed a problem where the AcpiSetCurrentResources interface could
13701 fault. This was a side effect of the deployment of the new memory
13704 Fixed a couple of problems with the Global Lock support introduced
13705 in the last major build. The "common" (1.0/2.0) internal FACS was
13706 being overwritten with the FACS signature and clobbering the
13707 Global Lock pointer. Also, the actual firmware FACS was being
13708 unmapped after construction of the "common" FACS, preventing
13709 access to the actual Global Lock field within it. The "common"
13710 internal FACS is no longer installed as an actual ACPI table; it
13711 is used simply as a global.
13713 Code and Data Size: Current core subsystem library sizes are shown
13714 below. These are the code and data sizes for the acpica.lib
13715 produced by the Microsoft Visual C++ 6.0 compiler, and these
13716 values do not include any ACPI driver or OSPM code. The debug
13717 version of the code includes the debug output trace mechanism and
13718 has a larger code and data size. Note that these values will vary
13719 depending on the efficiency of the compiler and the compiler
13720 options used during generation.
13722 Previous Release (02_07_01)
13723 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13724 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13726 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13727 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13732 Updated Linux-specific code for core macro and OSL interface
13733 changes described above.
13735 Improved /proc/acpi/event. It now can be opened only once and has
13736 proper poll functionality.
13738 Fixed and restructured power management (acpi_bus).
13740 Only create /proc "view by type" when devices of that class exist.
13742 Fixed "charging/discharging" bug (and others) in acpi_battery.
13744 Improved thermal zone code.
13747 3) ASL Compiler, version X2039:
13750 Implemented the new compiler restriction on ASL String hex/octal
13751 escapes to non-null, ASCII values. An error results if an invalid
13752 value is used. (This will require an ACPI 2.0 specification
13755 AML object labels that are output to the optional C and ASM source
13756 are now prefixed with both the ACPI table signature and table ID
13757 to help guarantee uniqueness within a large BIOS project.
13760 ----------------------------------------
13761 Summary of changes for this label: 02_01_02
13763 1) ACPI CA Core Subsystem:
13765 ACPI 2.0 support is complete in the entire Core Subsystem and the
13766 ASL compiler. All new ACPI 2.0 operators are implemented and all
13767 other changes for ACPI 2.0 support are complete. With
13768 simultaneous code and data optimizations throughout the subsystem,
13769 ACPI 2.0 support has been implemented with almost no additional
13770 cost in terms of code and data size.
13772 Implemented a new mechanism for allocation of return buffers. If
13773 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13774 be allocated on behalf of the caller. Consolidated all return
13775 buffer validation and allocation to a common procedure. Return
13776 buffers will be allocated via the primary OSL allocation interface
13777 since it appears that a separate pool is not needed by most users.
13778 If a separate pool is required for these buffers, the caller can
13779 still use the original mechanism and pre-allocate the buffer(s).
13781 Implemented support for string operands within the DerefOf
13784 Restructured the Hardware and Event managers to be table driven,
13785 simplifying the source code and reducing the amount of generated
13788 Split the common read/write low-level ACPI register bitfield
13789 procedure into a separate read and write, simplifying the code
13792 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13793 used only a handful of times and didn't have enough critical mass
13794 for a separate interface. Replaced with a common calloc procedure
13797 Fixed a reported problem with the GPE number mapping mechanism
13798 that allows GPE1 numbers to be non-contiguous with GPE0.
13799 Reorganized the GPE information and shrunk a large array that was
13800 originally large enough to hold info for all possible GPEs (256)
13801 to simply large enough to hold all GPEs up to the largest GPE
13802 number on the machine.
13804 Fixed a reported problem with resource structure alignment on 64-
13807 Changed the AcpiEnableEvent and AcpiDisableEvent external
13808 interfaces to not require any flags for the common case of
13809 enabling/disabling a GPE.
13811 Implemented support to allow a "Notify" on a Processor object.
13813 Most TBDs in comments within the source code have been resolved
13817 Fixed a problem in the interpreter where a standalone parent
13818 prefix (^) was not handled correctly in the interpreter and
13821 Removed obsolete and unnecessary GPE save/restore code.
13823 Implemented Field support in the ASL Load operator. This allows a
13824 table to be loaded from a named field, in addition to loading a
13825 table directly from an Operation Region.
13827 Implemented timeout and handle support in the external Global Lock
13830 Fixed a problem in the AcpiDump utility where pathnames were no
13831 longer being generated correctly during the dump of named objects.
13833 Modified the AML debugger to give a full display of if/while
13834 predicates instead of just one AML opcode at a time. (The
13835 predicate can have several nested ASL statements.) The old method
13836 was confusing during single stepping.
13838 Code and Data Size: Current core subsystem library sizes are shown
13839 below. These are the code and data sizes for the acpica.lib
13840 produced by the Microsoft Visual C++ 6.0 compiler, and these
13841 values do not include any ACPI driver or OSPM code. The debug
13842 version of the code includes the debug output trace mechanism and
13843 has a larger code and data size. Note that these values will vary
13844 depending on the efficiency of the compiler and the compiler
13845 options used during generation.
13847 Previous Release (12_18_01)
13848 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13849 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13851 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13852 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13856 Implemented fix for PIIX reverse throttling errata (Processor
13859 Added new Limit interface (Processor and Thermal drivers)
13861 New thermal policy (Thermal driver)
13863 Many updates to /proc
13865 Battery "low" event support (Battery driver)
13867 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13869 IA32 - IA64 initialization unification, no longer experimental
13871 Menuconfig options redesigned
13873 3) ASL Compiler, version X2037:
13875 Implemented several new output features to simplify integration of
13876 AML code into firmware: 1) Output the AML in C source code with
13877 labels for each named ASL object. The original ASL source code
13878 is interleaved as C comments. 2) Output the AML in ASM source code
13879 with labels and interleaved ASL source. 3) Output the AML in
13880 raw hex table form, in either C or ASM.
13882 Implemented support for optional string parameters to the
13883 LoadTable operator.
13885 Completed support for embedded escape sequences within string
13886 literals. The compiler now supports all single character escapes
13887 as well as the Octal and Hex escapes. Note: the insertion of a
13888 null byte into a string literal (via the hex/octal escape) causes
13889 the string to be immediately terminated. A warning is issued.
13891 Fixed a problem where incorrect AML was generated for the case
13892 where an ASL namepath consists of a single parent prefix (
13894 ) with no trailing name segments.
13896 The compiler has been successfully generated with a 64-bit C
13902 ----------------------------------------
13903 Summary of changes for this label: 12_18_01
13907 Enhanced blacklist with reason and severity fields. Any table's
13908 signature may now be used to identify a blacklisted system.
13910 Call _PIC control method to inform the firmware which interrupt
13911 model the OS is using. Turn on any disabled link devices.
13913 Cleaned up busmgr /proc error handling (Andreas Dilger)
13915 2) ACPI CA Core Subsystem:
13917 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
13920 Completed implementation of the ACPI 2.0 "Continue",
13921 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
13922 operators. All new ACPI 2.0 operators are now implemented in both
13923 the ASL compiler and the AML interpreter. The only remaining ACPI
13924 2.0 task is support for the String data type in the DerefOf
13925 operator. Fixed a problem with AcquireMutex where the status code
13926 was lost if the caller had to actually wait for the mutex.
13928 Increased the maximum ASL Field size from 64K bits to 4G bits.
13930 Completed implementation of the external Global Lock interfaces --
13931 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
13932 Handler parameters were added.
13934 Completed another pass at removing warnings and issues when
13935 compiling with 64-bit compilers. The code now compiles cleanly
13936 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
13937 add and subtract (diff) macros have changed considerably.
13940 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
13941 64-bit platforms, 32-bits on all others. This type is used
13942 wherever memory allocation and/or the C sizeof() operator is used,
13943 and affects the OSL memory allocation interfaces AcpiOsAllocate
13944 and AcpiOsCallocate.
13946 Implemented sticky user breakpoints in the AML debugger.
13948 Code and Data Size: Current core subsystem library sizes are shown
13949 below. These are the code and data sizes for the acpica.lib
13950 produced by the Microsoft Visual C++ 6.0 compiler, and these
13951 values do not include any ACPI driver or OSPM code. The debug
13952 version of the code includes the debug output trace mechanism and
13953 has a larger code and data size. Note that these values will vary
13954 depending on the efficiency of the compiler and the compiler
13955 options used during generation.
13957 Previous Release (12_05_01)
13958 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
13959 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
13961 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13962 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13964 3) ASL Compiler, version X2034:
13966 Now checks for (and generates an error if detected) the use of a
13967 Break or Continue statement without an enclosing While statement.
13970 Successfully generated the compiler with the Intel 64-bit C
13973 ----------------------------------------
13974 Summary of changes for this label: 12_05_01
13976 1) ACPI CA Core Subsystem:
13978 The ACPI 2.0 CopyObject operator is fully implemented. This
13979 operator creates a new copy of an object (and is also used to
13980 bypass the "implicit conversion" mechanism of the Store operator.)
13982 The ACPI 2.0 semantics for the SizeOf operator are fully
13983 implemented. The change is that performing a SizeOf on a
13984 reference object causes an automatic dereference of the object to
13985 tha actual value before the size is evaluated. This behavior was
13986 undefined in ACPI 1.0.
13988 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
13989 have been implemented. The interrupt polarity and mode are now
13992 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
13993 appearing in Package objects were not properly converted to
13994 integers when the internal Package was converted to an external
13995 object (via the AcpiEvaluateObject interface.)
13997 Fixed a problem with the namespace object deletion mechanism for
13998 objects created by control methods. There were two parts to this
13999 problem: 1) Objects created during the initialization phase method
14000 parse were not being deleted, and 2) The object owner ID mechanism
14001 to track objects was broken.
14003 Fixed a problem where the use of the ASL Scope operator within a
14004 control method would result in an invalid opcode exception.
14006 Fixed a problem introduced in the previous label where the buffer
14007 length required for the _PRT structure was not being returned
14010 Code and Data Size: Current core subsystem library sizes are shown
14011 below. These are the code and data sizes for the acpica.lib
14012 produced by the Microsoft Visual C++ 6.0 compiler, and these
14013 values do not include any ACPI driver or OSPM code. The debug
14014 version of the code includes the debug output trace mechanism and
14015 has a larger code and data size. Note that these values will vary
14016 depending on the efficiency of the compiler and the compiler
14017 options used during generation.
14019 Previous Release (11_20_01)
14020 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14021 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14024 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14025 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14029 Updated all files to apply cleanly against 2.4.16.
14031 Added basic PCI Interrupt Routing Table (PRT) support for IA32
14032 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
14033 version supports both static and dyanmic PRT entries, but dynamic
14034 entries are treated as if they were static (not yet
14035 reconfigurable). Architecture- specific code to use this data is
14036 absent on IA32 but should be available shortly.
14038 Changed the initialization sequence to start the ACPI interpreter
14039 (acpi_init) prior to initialization of the PCI driver (pci_init)
14040 in init/main.c. This ordering is required to support PRT and
14041 facilitate other (future) enhancement. A side effect is that the
14042 ACPI bus driver and certain device drivers can no longer be loaded
14045 Modified the 'make menuconfig' options to allow PCI Interrupt
14046 Routing support to be included without the ACPI Bus and other
14049 3) ASL Compiler, version X2033:
14051 Fixed some issues with the use of the new CopyObject and
14052 DataTableRegion operators. Both are fully functional.
14054 ----------------------------------------
14055 Summary of changes for this label: 11_20_01
14057 20 November 2001. Summary of changes for this release.
14059 1) ACPI CA Core Subsystem:
14061 Updated Index support to match ACPI 2.0 semantics. Storing a
14062 Integer, String, or Buffer to an Index of a Buffer will store only
14063 the least-significant byte of the source to the Indexed buffer
14064 byte. Multiple writes are not performed.
14066 Fixed a problem where the access type used in an AccessAs ASL
14067 operator was not recorded correctly into the field object.
14069 Fixed a problem where ASL Event objects were created in a
14070 signalled state. Events are now created in an unsignalled state.
14072 The internal object cache is now purged after table loading and
14073 initialization to reduce the use of dynamic kernel memory -- on
14074 the assumption that object use is greatest during the parse phase
14075 of the entire table (versus the run-time use of individual control
14078 ACPI 2.0 variable-length packages are now fully operational.
14080 Code and Data Size: Code and Data optimizations have permitted new
14081 feature development with an actual reduction in the library size.
14082 Current core subsystem library sizes are shown below. These are
14083 the code and data sizes for the acpica.lib produced by the
14084 Microsoft Visual C++ 6.0 compiler, and these values do not include
14085 any ACPI driver or OSPM code. The debug version of the code
14086 includes the debug output trace mechanism and has a larger code
14087 and data size. Note that these values will vary depending on the
14088 efficiency of the compiler and the compiler options used during
14091 Previous Release (11_09_01):
14092 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14093 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14096 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14097 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14101 Enhanced the ACPI boot-time initialization code to allow the use
14102 of Local APIC tables for processor enumeration on IA-32, and to
14103 pave the way for a fully MPS-free boot (on SMP systems) in the
14104 near future. This functionality replaces
14105 arch/i386/kernel/acpitables.c, which was introduced in an earlier
14106 2.4.15-preX release. To enable this feature you must add
14107 "acpi_boot=on" to the kernel command line -- see the help entry
14108 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
14111 Restructured the configuration options to allow boot-time table
14112 parsing support without inclusion of the ACPI Interpreter (and
14115 NOTE: This release does not include fixes for the reported events,
14116 power-down, and thermal passive cooling issues (coming soon).
14120 Added additional typechecking for Fields within restricted access
14121 Operation Regions. All fields within EC and CMOS regions must be
14122 declared with ByteAcc. All fields withing SMBus regions must be
14123 declared with the BufferAcc access type.
14125 Fixed a problem where the listing file output of control methods
14126 no longer interleaved the actual AML code with the ASL source
14132 ----------------------------------------
14133 Summary of changes for this label: 11_09_01
14135 1) ACPI CA Core Subsystem:
14137 Implemented ACPI 2.0-defined support for writes to fields with a
14138 Buffer, String, or Integer source operand that is smaller than the
14139 target field. In these cases, the source operand is zero-extended
14140 to fill the target field.
14142 Fixed a problem where a Field starting bit offset (within the
14143 parent operation region) was calculated incorrectly if the
14145 alignment of the field differed from the access width. This
14146 affected CreateWordField, CreateDwordField, CreateQwordField, and
14147 possibly other fields that use the "AccessAny" keyword.
14149 Fixed a problem introduced in the 11_02_01 release where indirect
14150 stores through method arguments did not operate correctly.
14154 Implemented boot-time ACPI table parsing support
14155 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
14156 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
14157 legacy BIOS interfaces (e.g. MPS) for the configuration of system
14158 processors, memory, and interrupts during setup_arch(). Note that
14159 this patch does not include the required architecture-specific
14160 changes required to apply this information -- subsequent patches
14161 will be posted for both IA32 and IA64 to achieve this.
14163 Added low-level sleep support for IA32 platforms, courtesy of Pat
14164 Mochel. This allows IA32 systems to transition to/from various
14165 sleeping states (e.g. S1, S3), although the lack of a centralized
14166 driver model and power-manageable drivers will prevent its
14167 (successful) use on most systems.
14169 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
14170 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
14171 tables" option, etc.
14173 Increased the default timeout for the EC driver from 1ms to 10ms
14174 (1000 cycles of 10us) to try to address AE_TIME errors during EC
14177 ----------------------------------------
14178 Summary of changes for this label: 11_02_01
14180 1) ACPI CA Core Subsystem:
14182 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
14183 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
14186 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
14187 changes to support ACPI 2.0 Qword field access. Read/Write
14188 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
14189 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
14190 the value parameter for the address space handler interface is now
14191 an ACPI_INTEGER. OSL implementations of these interfaces must now
14192 handle the case where the Width parameter is 64.
14194 Index Fields: Fixed a problem where unaligned bit assembly and
14195 disassembly for IndexFields was not supported correctly.
14197 Index and Bank Fields: Nested Index and Bank Fields are now
14198 supported. During field access, a check is performed to ensure
14199 that the value written to an Index or Bank register is not out of
14200 the range of the register. The Index (or Bank) register is
14201 written before each access to the field data. Future support will
14202 include allowing individual IndexFields to be wider than the
14203 DataRegister width.
14205 Fields: Fixed a problem where the AML interpreter was incorrectly
14206 attempting to write beyond the end of a Field/OpRegion. This was
14207 a boundary case that occurred when a DWORD field was written to a
14208 BYTE access OpRegion, forcing multiple writes and causing the
14209 interpreter to write one datum too many.
14211 Fields: Fixed a problem with Field/OpRegion access where the
14212 starting bit address of a field was incorrectly calculated if the
14213 current access type was wider than a byte (WordAcc, DwordAcc, or
14216 Fields: Fixed a problem where forward references to individual
14217 FieldUnits (individual Field names within a Field definition) were
14218 not resolved during the AML table load.
14220 Fields: Fixed a problem where forward references from a Field
14221 definition to the parent Operation Region definition were not
14222 resolved during the AML table load.
14224 Fields: Duplicate FieldUnit names within a scope are now detected
14225 during AML table load.
14227 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
14228 returned an incorrect name for the root node.
14230 Code and Data Size: Code and Data optimizations have permitted new
14231 feature development with an actual reduction in the library size.
14232 Current core subsystem library sizes are shown below. These are
14233 the code and data sizes for the acpica.lib produced by the
14234 Microsoft Visual C++ 6.0 compiler, and these values do not include
14235 any ACPI driver or OSPM code. The debug version of the code
14236 includes the debug output trace mechanism and has a larger code
14237 and data size. Note that these values will vary depending on the
14238 efficiency of the compiler and the compiler options used during
14241 Previous Release (10_18_01):
14242 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14243 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14246 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14247 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14251 Improved /proc processor output (Pavel Machek) Re-added
14252 MODULE_LICENSE("GPL") to all modules.
14254 3) ASL Compiler version X2030:
14256 Duplicate FieldUnit names within a scope are now detected and
14261 Programmer Reference updated to reflect OSL and address space
14262 handler interface changes described above.
14264 ----------------------------------------
14265 Summary of changes for this label: 10_18_01
14267 ACPI CA Core Subsystem:
14269 Fixed a problem with the internal object reference count mechanism
14270 that occasionally caused premature object deletion. This resolves
14271 all of the outstanding problem reports where an object is deleted
14272 in the middle of an interpreter evaluation. Although this problem
14273 only showed up in rather obscure cases, the solution to the
14274 problem involved an adjustment of all reference counts involving
14275 objects attached to namespace nodes.
14277 Fixed a problem with Field support in the interpreter where
14278 writing to an aligned field whose length is an exact multiple (2
14279 or greater) of the field access granularity would cause an attempt
14280 to write beyond the end of the field.
14282 The top level AML opcode execution functions within the
14283 interpreter have been renamed with a more meaningful and
14284 consistent naming convention. The modules exmonad.c and
14285 exdyadic.c were eliminated. New modules are exoparg1.c,
14286 exoparg2.c, exoparg3.c, and exoparg6.c.
14288 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
14290 Fixed a problem where the AML debugger was causing some internal
14291 objects to not be deleted during subsystem termination.
14293 Fixed a problem with the external AcpiEvaluateObject interface
14294 where the subsystem would fault if the named object to be
14295 evaluated refered to a constant such as Zero, Ones, etc.
14297 Fixed a problem with IndexFields and BankFields where the
14298 subsystem would fault if the index, data, or bank registers were
14299 not defined in the same scope as the field itself.
14301 Added printf format string checking for compilers that support
14302 this feature. Corrected more than 50 instances of issues with
14303 format specifiers within invocations of ACPI_DEBUG_PRINT
14304 throughout the core subsystem code.
14306 The ASL "Revision" operator now returns the ACPI support level
14307 implemented in the core - the value "2" since the ACPI 2.0 support
14308 is more than 50% implemented.
14310 Enhanced the output of the AML debugger "dump namespace" command
14311 to output in a more human-readable form.
14313 Current core subsystem library code sizes are shown below. These
14315 are the code and data sizes for the acpica.lib produced by the
14316 Microsoft Visual C++ 6.0 compiler, and these values do not include
14317 any ACPI driver or OSPM code. The debug version of the code
14318 includes the full debug trace mechanism -- leading to a much
14320 larger code and data size. Note that these values will vary
14321 depending on the efficiency of the compiler and the compiler
14322 options used during generation.
14324 Previous Label (09_20_01):
14325 Non-Debug Version: 65K Code, 5K Data, 70K Total
14326 Debug Version: 138K Code, 58K Data, 196K Total
14330 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14331 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14335 Implemented a "Bad BIOS Blacklist" to track machines that have
14336 known ASL/AML problems.
14338 Enhanced the /proc interface for the thermal zone driver and added
14339 support for _HOT (the critical suspend trip point). The 'info'
14340 file now includes threshold/policy information, and allows setting
14341 of _SCP (cooling preference) and _TZP (polling frequency) values
14342 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
14343 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
14344 preference to the passive/quiet mode (if supported by the ASL).
14346 Implemented a workaround for a gcc bug that resuted in an OOPs
14347 when loading the control method battery driver.
14349 ----------------------------------------
14350 Summary of changes for this label: 09_20_01
14352 ACPI CA Core Subsystem:
14354 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
14355 modified to allow individual GPE levels to be flagged as wake-
14356 enabled (i.e., these GPEs are to remain enabled when the platform
14359 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
14360 support wake-enabled GPEs. This means that upon entering the
14361 sleep state, all GPEs that are not wake-enabled are disabled.
14362 When leaving the sleep state, these GPEs are reenabled.
14364 A local double-precision divide/modulo module has been added to
14365 enhance portability to OS kernels where a 64-bit math library is
14366 not available. The new module is "utmath.c".
14368 Several optimizations have been made to reduce the use of CPU
14369 stack. Originally over 2K, the maximum stack usage is now below
14370 2K at 1860 bytes (1.82k)
14372 Fixed a problem with the AcpiGetFirmwareTable interface where the
14373 root table pointer was not mapped into a logical address properly.
14375 Fixed a problem where a NULL pointer was being dereferenced in the
14376 interpreter code for the ASL Notify operator.
14378 Fixed a problem where the use of the ASL Revision operator
14379 returned an error. This operator now returns the current version
14380 of the ACPI CA core subsystem.
14382 Fixed a problem where objects passed as control method parameters
14383 to AcpiEvaluateObject were always deleted at method termination.
14384 However, these objects may end up being stored into the namespace
14385 by the called method. The object reference count mechanism was
14386 applied to these objects instead of a force delete.
14388 Fixed a problem where static strings or buffers (contained in the
14389 AML code) that are declared as package elements within the ASL
14390 code could cause a fault because the interpreter would attempt to
14391 delete them. These objects are now marked with the "static
14392 object" flag to prevent any attempt to delete them.
14394 Implemented an interpreter optimization to use operands directly
14395 from the state object instead of extracting the operands to local
14396 variables. This reduces stack use and code size, and improves
14399 The module exxface.c was eliminated as it was an unnecessary extra
14402 Current core subsystem library code sizes are shown below. These
14403 are the code and data sizes for the acpica.lib produced by the
14404 Microsoft Visual C++ 6.0 compiler, and these values do not include
14405 any ACPI driver or OSPM code. The debug version of the code
14406 includes the full debug trace mechanism -- leading to a much
14407 larger code and data size. Note that these values will vary
14408 depending on the efficiency of the compiler and the compiler
14409 options used during generation.
14411 Non-Debug Version: 65K Code, 5K Data, 70K Total
14412 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
14413 Total (Previously 195K)
14417 Support for ACPI 2.0 64-bit integers has been added. All ACPI
14418 Integer objects are now 64 bits wide
14420 All Acpi data types and structures are now in lower case. Only
14421 Acpi macros are upper case for differentiation.
14425 Changes to the external interfaces as described above.
14427 ----------------------------------------
14428 Summary of changes for this label: 08_31_01
14430 ACPI CA Core Subsystem:
14432 A bug with interpreter implementation of the ASL Divide operator
14433 was found and fixed. The implicit function return value (not the
14434 explicit store operands) was returning the remainder instead of
14435 the quotient. This was a longstanding bug and it fixes several
14436 known outstanding issues on various platforms.
14438 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
14439 been further optimized for size. There are 700 invocations of the
14440 DEBUG_PRINT macro alone, so each optimization reduces the size of
14441 the debug version of the subsystem significantly.
14443 A stack trace mechanism has been implemented. The maximum stack
14444 usage is about 2K on 32-bit platforms. The debugger command "stat
14445 stack" will display the current maximum stack usage.
14447 All public symbols and global variables within the subsystem are
14448 now prefixed with the string "Acpi". This keeps all of the
14449 symbols grouped together in a kernel map, and avoids conflicts
14450 with other kernel subsystems.
14452 Most of the internal fixed lookup tables have been moved into the
14453 code segment via the const operator.
14455 Several enhancements have been made to the interpreter to both
14456 reduce the code size and improve performance.
14458 Current core subsystem library code sizes are shown below. These
14459 are the code and data sizes for the acpica.lib produced by the
14460 Microsoft Visual C++ 6.0 compiler, and these values do not include
14461 any ACPI driver or OSPM code. The debug version of the code
14462 includes the full debug trace mechanism which contains over 700
14463 invocations of the DEBUG_PRINT macro, 500 function entry macro
14464 invocations, and over 900 function exit macro invocations --
14465 leading to a much larger code and data size. Note that these
14466 values will vary depending on the efficiency of the compiler and
14467 the compiler options used during generation.
14469 Non-Debug Version: 64K Code, 5K Data, 69K Total
14470 Debug Version: 137K Code, 58K Data, 195K Total
14474 Implemented wbinvd() macro, pending a kernel-wide definition.
14476 Fixed /proc/acpi/event to handle poll() and short reads.
14478 ASL Compiler, version X2026:
14480 Fixed a problem introduced in the previous label where the AML
14482 code emitted for package objects produced packages with zero
14485 ----------------------------------------
14486 Summary of changes for this label: 08_16_01
14488 ACPI CA Core Subsystem:
14490 The following ACPI 2.0 ASL operators have been implemented in the
14491 AML interpreter (These are already supported by the Intel ASL
14492 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
14493 ToBuffer. Support for 64-bit AML constants is implemented in the
14494 AML parser, debugger, and disassembler.
14496 The internal memory tracking mechanism (leak detection code) has
14497 been upgraded to reduce the memory overhead (a separate tracking
14498 block is no longer allocated for each memory allocation), and now
14499 supports all of the internal object caches.
14501 The data structures and code for the internal object caches have
14502 been coelesced and optimized so that there is a single cache and
14503 memory list data structure and a single group of functions that
14504 implement generic cache management. This has reduced the code
14505 size in both the debug and release versions of the subsystem.
14507 The DEBUG_PRINT macro(s) have been optimized for size and replaced
14508 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
14509 different, because it generates a single call to an internal
14510 function. This results in a savings of about 90 bytes per
14511 invocation, resulting in an overall code and data savings of about
14512 16% in the debug version of the subsystem.
14516 Fixed C3 disk corruption problems and re-enabled C3 on supporting
14519 Integrated low-level sleep code by Patrick Mochel.
14521 Further tweaked source code Linuxization.
14527 Support for ACPI 2.0 variable length packages is fixed/completed.
14529 Fixed a problem where the optional length parameter for the ACPI
14530 2.0 ToString operator.
14532 Fixed multiple extraneous error messages when a syntax error is
14533 detected within the declaration line of a control method.
14535 ----------------------------------------
14536 Summary of changes for this label: 07_17_01
14538 ACPI CA Core Subsystem:
14540 Added a new interface named AcpiGetFirmwareTable to obtain any
14541 ACPI table via the ACPI signature. The interface can be called at
14542 any time during kernel initialization, even before the kernel
14543 virtual memory manager is initialized and paging is enabled. This
14544 allows kernel subsystems to obtain ACPI tables very early, even
14545 before the ACPI CA subsystem is initialized.
14547 Fixed a problem where Fields defined with the AnyAcc attribute
14548 could be resolved to the incorrect address under the following
14549 conditions: 1) the field width is larger than 8 bits and 2) the
14550 parent operation region is not defined on a DWORD boundary.
14552 Fixed a problem where the interpreter is not being locked during
14553 namespace initialization (during execution of the _INI control
14554 methods), causing an error when an attempt is made to release it
14557 ACPI 2.0 support in the AML Interpreter has begun and will be
14558 ongoing throughout the rest of this year. In this label, The Mod
14559 operator is implemented.
14561 Added a new data type to contain full PCI addresses named
14562 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14563 and Function values.
14567 Enhanced the Linux version of the source code to change most
14568 capitalized ACPI type names to lowercase. For example, all
14569 instances of ACPI_STATUS are changed to acpi_status. This will
14570 result in a large diff, but the change is strictly cosmetic and
14571 aligns the CA code closer to the Linux coding standard.
14575 The interfaces to the PCI configuration space have been changed to
14576 add the PCI Segment number and to split the single 32-bit combined
14577 DeviceFunction field into two 16-bit fields. This was
14578 accomplished by moving the four values that define an address in
14579 PCI configuration space (segment, bus, device, and function) to
14580 the new ACPI_PCI_ID structure.
14582 The changes to the PCI configuration space interfaces led to a
14583 reexamination of the complete set of address space access
14584 interfaces for PCI, I/O, and Memory. The previously existing 18
14585 interfaces have proven difficult to maintain (any small change
14586 must be propagated across at least 6 interfaces) and do not easily
14587 allow for future expansion to 64 bits if necessary. Also, on some
14588 systems, it would not be appropriate to demultiplex the access
14589 width (8, 16, 32,or 64) before calling the OSL if the
14590 corresponding native OS interfaces contain a similar access width
14591 parameter. For these reasons, the 18 address space interfaces
14592 have been replaced by these 6 new ones:
14594 AcpiOsReadPciConfiguration
14595 AcpiOsWritePciConfiguration
14601 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14602 to perform the platform and/or OS-specific actions necessary to
14603 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14604 interface will simply call down to the CA core to perform the low-
14605 memory search for the table. On IA-64, the RSDP is obtained from
14606 EFI. Migrating this interface to the OSL allows the CA core to
14608 remain OS and platform independent.
14610 Added a new interface named AcpiOsSignal to provide a generic
14611 "function code and pointer" interface for various miscellaneous
14612 signals and notifications that must be made to the host OS. The
14613 first such signals are intended to support the ASL Fatal and
14614 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14615 interface has been obsoleted.
14617 The definition of the AcpiFormatException interface has been
14618 changed to simplify its use. The caller no longer must supply a
14619 buffer to the call; A pointer to a const string is now returned
14620 directly. This allows the call to be easily used in printf
14621 statements, etc. since the caller does not have to manage a local
14625 ASL Compiler, Version X2025:
14627 The ACPI 2.0 Switch/Case/Default operators have been implemented
14628 and are fully functional. They will work with all ACPI 1.0
14629 interpreters, since the operators are simply translated to If/Else
14632 The ACPI 2.0 ElseIf operator is implemented and will also work
14633 with 1.0 interpreters, for the same reason.
14635 Implemented support for ACPI 2.0 variable-length packages. These
14636 packages have a separate opcode, and their size is determined by
14637 the interpreter at run-time.
14639 Documentation The ACPI CA Programmer Reference has been updated to
14640 reflect the new interfaces and changes to existing interfaces.
14642 ------------------------------------------
14643 Summary of changes for this label: 06_15_01
14645 ACPI CA Core Subsystem:
14647 Fixed a problem where a DWORD-accessed field within a Buffer
14648 object would get its byte address inadvertently rounded down to
14649 the nearest DWORD. Buffers are always Byte-accessible.
14651 ASL Compiler, version X2024:
14653 Fixed a problem where the Switch() operator would either fault or
14654 hang the compiler. Note however, that the AML code for this ACPI
14655 2.0 operator is not yet implemented.
14657 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14660 Implementation of the CreateField operator automatically converts
14661 a reference to a named field within a resource descriptor from a
14662 byte offset to a bit offset if required.
14664 Added some missing named fields from the resource descriptor
14665 support. These are the names that are automatically created by the
14666 compiler to reference fields within a descriptor. They are only
14667 valid at compile time and are not passed through to the AML
14670 Resource descriptor named fields are now typed as Integers and
14671 subject to compile-time typechecking when used in expressions.
14673 ------------------------------------------
14674 Summary of changes for this label: 05_18_01
14676 ACPI CA Core Subsystem:
14678 Fixed a couple of problems in the Field support code where bits
14679 from adjacent fields could be returned along with the proper field
14680 bits. Restructured the field support code to improve performance,
14681 readability and maintainability.
14683 New DEBUG_PRINTP macro automatically inserts the procedure name
14684 into the output, saving hundreds of copies of procedure name
14685 strings within the source, shrinking the memory footprint of the
14686 debug version of the core subsystem.
14688 Source Code Structure:
14690 The source code directory tree was restructured to reflect the
14691 current organization of the component architecture. Some files
14692 and directories have been moved and/or renamed.
14696 Fixed leaking kacpidpc processes.
14698 Fixed queueing event data even when /proc/acpi/event is not
14701 ASL Compiler, version X2020:
14703 Memory allocation performance enhancement - over 24X compile time
14704 improvement on large ASL files. Parse nodes and namestring
14705 buffers are now allocated from a large internal compiler buffer.
14707 The temporary .SRC file is deleted unless the "-s" option is
14710 The "-d" debug output option now sends all output to the .DBG file
14711 instead of the console.
14713 "External" second parameter is now optional
14715 "ElseIf" syntax now properly allows the predicate
14717 Last operand to "Load" now recognized as a Target operand
14719 Debug object can now be used anywhere as a normal object.
14721 ResourceTemplate now returns an object of type BUFFER
14723 EISAID now returns an object of type INTEGER
14725 "Index" now works with a STRING operand
14727 "LoadTable" now accepts optional parameters
14729 "ToString" length parameter is now optional
14731 "Interrupt (ResourceType," parse error fixed.
14733 "Register" with a user-defined region space parse error fixed
14735 Escaped backslash at the end of a string ("\\") scan/parse error
14738 "Revision" is now an object of type INTEGER.
14742 ------------------------------------------
14743 Summary of changes for this label: 05_02_01
14747 /proc/acpi/event now blocks properly.
14749 Removed /proc/sys/acpi. You can still dump your DSDT from
14752 ACPI CA Core Subsystem:
14754 Fixed a problem introduced in the previous label where some of the
14755 "small" resource descriptor types were not recognized.
14757 Improved error messages for the case where an ASL Field is outside
14758 the range of the parent operation region.
14760 ASL Compiler, version X2018:
14763 Added error detection for ASL Fields that extend beyond the length
14764 of the parent operation region (only if the length of the region
14765 is known at compile time.) This includes fields that have a
14766 minimum access width that is smaller than the parent region, and
14767 individual field units that are partially or entirely beyond the
14768 extent of the parent.
14772 ------------------------------------------
14773 Summary of changes for this label: 04_27_01
14775 ACPI CA Core Subsystem:
14777 Fixed a problem where the namespace mutex could be released at the
14778 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14780 Added optional thread ID output for debug traces, to simplify
14781 debugging of multiple threads. Added context switch notification
14782 when the debug code realizes that a different thread is now
14783 executing ACPI code.
14785 Some additional external data types have been prefixed with the
14786 string "ACPI_" for consistency. This may effect existing code.
14787 The data types affected are the external callback typedefs - e.g.,
14789 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14793 Fixed an issue with the OSL semaphore implementation where a
14794 thread was waking up with an error from receiving a SIGCHLD
14797 Linux version of ACPI CA now uses the system C library for string
14798 manipulation routines instead of a local implementation.
14800 Cleaned up comments and removed TBDs.
14802 ASL Compiler, version X2017:
14804 Enhanced error detection and reporting for all file I/O
14809 Programmer Reference updated to version 1.06.
14813 ------------------------------------------
14814 Summary of changes for this label: 04_13_01
14816 ACPI CA Core Subsystem:
14818 Restructured support for BufferFields and RegionFields.
14819 BankFields support is now fully operational. All known 32-bit
14820 limitations on field sizes have been removed. Both BufferFields
14821 and (Operation) RegionFields are now supported by the same field
14824 Resource support now supports QWORD address and IO resources. The
14825 16/32/64 bit address structures and the Extended IRQ structure
14826 have been changed to properly handle Source Resource strings.
14828 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14829 condition internally and must never be returned by AcpiOsThreadId.
14830 This reserved value was changed from 0 since Unix systems allow a
14835 Driver code reorganized to enhance portability
14837 Added a kernel configuration option to control ACPI_DEBUG
14839 Fixed the EC driver to honor _GLK.
14841 ASL Compiler, version X2016:
14843 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14844 address space was set to 0, not 0x7f as it should be.
14846 ------------------------------------------
14847 Summary of changes for this label: 03_13_01
14849 ACPI CA Core Subsystem:
14851 During ACPI initialization, the _SB_._INI method is now run if
14854 Notify handler fix - notifies are deferred until the parent method
14855 completes execution. This fixes the "mutex already acquired"
14856 issue seen occasionally.
14858 Part of the "implicit conversion" rules in ACPI 2.0 have been
14859 found to cause compatibility problems with existing ASL/AML. The
14860 convert "result-to-target-type" implementation has been removed
14861 for stores to method Args and Locals. Source operand conversion
14862 is still fully implemented. Possible changes to ACPI 2.0
14863 specification pending.
14865 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14868 Fix for compiler warnings for 64-bit compiles.
14872 /proc output aligned for easier parsing.
14874 Release-version compile problem fixed.
14876 New kernel configuration options documented in Configure.help.
14878 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
14883 Power resource driver integrated with bus manager.
14885 Fixed kernel fault during active cooling for thermal zones.
14889 The source code tree has been restructured.
14893 ------------------------------------------
14894 Summary of changes for this label: 03_02_01
14896 Linux OS Services Layer (OSL):
14898 Major revision of all Linux-specific code.
14900 Modularized all ACPI-specific drivers.
14902 Added new thermal zone and power resource drivers.
14904 Revamped /proc interface (new functionality is under /proc/acpi).
14906 New kernel configuration options.
14908 Linux known issues:
14910 New kernel configuration options not documented in Configure.help
14914 Module dependencies not currently implemented. If used, they
14915 should be loaded in this order: busmgr, power, ec, system,
14916 processor, battery, ac_adapter, button, thermal.
14918 Modules will not load if CONFIG_MODVERSION is set.
14920 IBM 600E - entering S5 may reboot instead of shutting down.
14922 IBM 600E - Sleep button may generate "Invalid <NULL> context"
14925 Some systems may fail with "execution mutex already acquired"
14928 ACPI CA Core Subsystem:
14930 Added a new OSL Interface, AcpiOsGetThreadId. This was required
14931 for the deadlock detection code. Defined to return a non-zero, 32-
14932 bit thread ID for the currently executing thread. May be a non-
14933 zero constant integer on single-thread systems.
14935 Implemented deadlock detection for internal subsystem mutexes. We
14936 may add conditional compilation for this code (debug only) later.
14938 ASL/AML Mutex object semantics are now fully supported. This
14939 includes multiple acquires/releases by owner and support for the
14941 Mutex SyncLevel parameter.
14943 A new "Force Release" mechanism automatically frees all ASL
14944 Mutexes that have been acquired but not released when a thread
14945 exits the interpreter. This forces conformance to the ACPI spec
14946 ("All mutexes must be released when an invocation exits") and
14947 prevents deadlocked ASL threads. This mechanism can be expanded
14948 (later) to monitor other resource acquisitions if OEM ASL code
14949 continues to misbehave (which it will).
14951 Several new ACPI exception codes have been added for the Mutex
14954 Recursive method calls are now allowed and supported (the ACPI
14955 spec does in fact allow recursive method calls.) The number of
14956 recursive calls is subject to the restrictions imposed by the
14957 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
14960 Implemented support for the SyncLevel parameter for control
14961 methods (ACPI 2.0 feature)
14963 Fixed a deadlock problem when multiple threads attempted to use
14966 Fixed a problem where the string length of a String package
14967 element was not always set in a package returned from
14968 AcpiEvaluateObject.
14970 Fixed a problem where the length of a String package element was
14971 not always included in the length of the overall package returned
14972 from AcpiEvaluateObject.
14974 Added external interfaces (Acpi*) to the ACPI debug memory
14975 manager. This manager keeps a list of all outstanding
14976 allocations, and can therefore detect memory leaks and attempts to
14977 free memory blocks more than once. Useful for code such as the
14978 power manager, etc. May not be appropriate for device drivers.
14979 Performance with the debug code enabled is slow.
14981 The ACPI Global Lock is now an optional hardware element.
14983 ASL Compiler Version X2015:
14985 Integrated changes to allow the compiler to be generated on
14986 multiple platforms.
14988 Linux makefile added to generate the compiler on Linux
14992 All platform-specific headers have been moved to their own
14993 subdirectory, Include/Platform.
14995 New source file added, Interpreter/ammutex.c
14997 New header file, Include/acstruct.h
15001 The programmer reference has been updated for the following new
15002 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
15004 ------------------------------------------
15005 Summary of changes for this label: 02_08_01
15007 Core ACPI CA Subsystem: Fixed a problem where an error was
15008 incorrectly returned if the return resource buffer was larger than
15009 the actual data (in the resource interfaces).
15011 References to named objects within packages are resolved to the
15013 full pathname string before packages are returned directly (via
15014 the AcpiEvaluateObject interface) or indirectly via the resource
15017 Linux OS Services Layer (OSL):
15019 Improved /proc battery interface.
15022 Added C-state debugging output and other miscellaneous fixes.
15024 ASL Compiler Version X2014:
15026 All defined method arguments can now be used as local variables,
15027 including the ones that are not actually passed in as parameters.
15028 The compiler tracks initialization of the arguments and issues an
15029 exception if they are used without prior assignment (just like
15032 The -o option now specifies a filename prefix that is used for all
15033 output files, including the AML output file. Otherwise, the
15034 default behavior is as follows: 1) the AML goes to the file
15035 specified in the DSDT. 2) all other output files use the input
15036 source filename as the base.
15038 ------------------------------------------
15039 Summary of changes for this label: 01_25_01
15041 Core ACPI CA Subsystem: Restructured the implementation of object
15042 store support within the interpreter. This includes support for
15043 the Store operator as well as any ASL operators that include a
15046 Partially implemented support for Implicit Result-to-Target
15047 conversion. This is when a result object is converted on the fly
15048 to the type of an existing target object. Completion of this
15049 support is pending further analysis of the ACPI specification
15050 concerning this matter.
15052 CPU-specific code has been removed from the subsystem (hardware
15055 New Power Management Timer functions added
15057 Linux OS Services Layer (OSL): Moved system state transition code
15058 to the core, fixed it, and modified Linux OSL accordingly.
15060 Fixed C2 and C3 latency calculations.
15063 We no longer use the compilation date for the version message on
15064 initialization, but retrieve the version from AcpiGetSystemInfo().
15066 Incorporated for fix Sony VAIO machines.
15068 Documentation: The Programmer Reference has been updated and
15072 ASL Compiler: Version X2013: Fixed a problem where the line
15073 numbering and error reporting could get out of sync in the
15074 presence of multiple include files.
15076 ------------------------------------------
15077 Summary of changes for this label: 01_15_01
15079 Core ACPI CA Subsystem:
15081 Implemented support for type conversions in the execution of the
15082 ASL Concatenate operator (The second operand is converted to
15083 match the type of the first operand before concatenation.)
15085 Support for implicit source operand conversion is partially
15086 implemented. The ASL source operand types Integer, Buffer, and
15087 String are freely interchangeable for most ASL operators and are
15088 converted by the interpreter on the fly as required. Implicit
15089 Target operand conversion (where the result is converted to the
15090 target type before storing) is not yet implemented.
15092 Support for 32-bit and 64-bit BCD integers is implemented.
15094 Problem fixed where a field read on an aligned field could cause a
15095 read past the end of the field.
15097 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
15098 does not return a value, but the caller expects one. (The ASL
15099 compiler flags this as a warning.)
15104 1. Static typechecking of all operands is implemented. This
15105 prevents the use of invalid objects (such as using a Package where
15106 an Integer is required) at compile time instead of at interpreter
15108 2. The ASL source line is printed with ALL errors and warnings.
15109 3. Bug fix for source EOF without final linefeed.
15110 4. Debug option is split into a parse trace and a namespace trace.
15111 5. Namespace output option (-n) includes initial values for
15112 integers and strings.
15113 6. Parse-only option added for quick syntax checking.
15114 7. Compiler checks for duplicate ACPI name declarations
15117 1. Relaxed typechecking to allow interchangeability between
15118 strings, integers, and buffers. These types are now converted by
15119 the interpreter at runtime.
15120 2. Compiler reports time taken by each internal subsystem in the
15124 ------------------------------------------
15125 Summary of changes for this label: 12_14_00
15129 This is the first official release of the compiler. Since the
15130 compiler requires elements of the Core Subsystem, this label
15131 synchronizes everything.
15133 ------------------------------------------
15134 Summary of changes for this label: 12_08_00
15137 Fixed a problem where named references within the ASL definition
15138 of both OperationRegions and CreateXXXFields did not work
15139 properly. The symptom was an AE_AML_OPERAND_TYPE during
15140 initialization of the region/field. This is similar (but not
15141 related internally) to the problem that was fixed in the last
15144 Implemented both 32-bit and 64-bit support for the BCD ASL
15145 functions ToBCD and FromBCD.
15147 Updated all legal headers to include "2000" in the copyright
15150 ------------------------------------------
15151 Summary of changes for this label: 12_01_00
15153 Fixed a problem where method invocations within the ASL definition
15154 of both OperationRegions and CreateXXXFields did not work
15155 properly. The symptom was an AE_AML_OPERAND_TYPE during
15156 initialization of the region/field:
15158 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
15159 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
15162 Fixed a problem where operators with more than one nested
15163 subexpression would fail. The symptoms were varied, by mostly
15164 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
15165 problem that has gone unnoticed until now.
15167 Subtract (Add (1,2), Multiply (3,4))
15169 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
15170 previous build (The prefix part of a relative path was handled
15173 Fixed a problem where Operation Region initialization failed if
15174 the operation region name was a "namepath" instead of a simple
15175 "nameseg". Symptom was an AE_NO_OPERAND error.
15177 Fixed a problem where an assignment to a local variable via the
15178 indirect RefOf mechanism only worked for the first such
15179 assignment. Subsequent assignments were ignored.
15181 ------------------------------------------
15182 Summary of changes for this label: 11_15_00
15184 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
15185 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
15186 the AML interpreter does NOT have support for the new 2.0 ASL
15187 grammar terms at this time.
15189 All ACPI hardware access is via the GAS structures in the ACPI 2.0
15192 All physical memory addresses across all platforms are now 64 bits
15193 wide. Logical address width remains dependent on the platform
15196 AcpiOsMapMemory interface changed to a 64-bit physical address.
15198 The AML interpreter integer size is now 64 bits, as per the ACPI
15201 For backwards compatibility with ACPI 1.0, ACPI tables with a
15202 revision number less than 2 use 32-bit integers only.
15204 Fixed a problem where the evaluation of OpRegion operands did not
15205 always resolve them to numbers properly.
15207 ------------------------------------------
15208 Summary of changes for this label: 10_20_00
15210 Fix for CBN_._STA issue. This fix will allow correct access to
15211 CBN_ OpRegions when the _STA returns 0x8.
15213 Support to convert ACPI constants (Ones, Zeros, One) to actual
15214 values before a package object is returned
15216 Fix for method call as predicate to if/while construct causing
15217 incorrect if/while behavior
15219 Fix for Else block package lengths sometimes calculated wrong (if
15222 Fix for Processor object length field, was always zero
15224 Table load abort if FACP sanity check fails
15226 Fix for problem with Scope(name) if name already exists
15228 Warning emitted if a named object referenced cannot be found
15229 (resolved) during method execution.
15235 ------------------------------------------
15236 Summary of changes for this label: 9_29_00
15238 New table initialization interfaces: AcpiInitializeSubsystem no
15239 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
15240 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
15241 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
15244 Note: These interface changes require changes to all existing OSDs
15246 The PCI_Config default address space handler is always installed
15247 at the root namespace object.
15249 -------------------------------------------
15250 Summary of changes for this label: 09_15_00
15252 The new initialization architecture is implemented. New
15253 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
15254 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
15256 (Namespace is automatically loaded when a table is loaded)
15258 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
15259 52 bytes to 32 bytes. There is usually one of these for every
15260 namespace object, so the memory savings is significant.
15262 Implemented just-in-time evaluation of the CreateField operators.
15264 Bug fixes for IA-64 support have been integrated.
15266 Additional code review comments have been implemented
15268 The so-called "third pass parse" has been replaced by a final walk
15269 through the namespace to initialize all operation regions (address
15270 spaces) and fields that have not yet been initialized during the
15271 execution of the various _INI and REG methods.
15273 New file - namespace/nsinit.c
15275 -------------------------------------------
15276 Summary of changes for this label: 09_01_00
15278 Namespace manager data structures have been reworked to change the
15279 primary object from a table to a single object. This has
15280 resulted in dynamic memory savings of 3X within the namespace and
15281 2X overall in the ACPI CA subsystem.
15283 Fixed problem where the call to AcpiEvFindPciRootBuses was
15284 inadvertently left commented out.
15286 Reduced the warning count when generating the source with the GCC
15289 Revision numbers added to each module header showing the
15290 SourceSafe version of the file. Please refer to this version
15291 number when giving us feedback or comments on individual modules.
15293 The main object types within the subsystem have been renamed to
15294 clarify their purpose:
15296 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
15297 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
15298 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
15300 NOTE: no changes to the initialization sequence are included in
15303 -------------------------------------------
15304 Summary of changes for this label: 08_23_00
15306 Fixed problem where TerminateControlMethod was being called
15307 multiple times per method
15309 Fixed debugger problem where single stepping caused a semaphore to
15312 Improved performance through additional parse object caching -
15313 added ACPI_EXTENDED_OP type
15315 -------------------------------------------
15316 Summary of changes for this label: 08_10_00
15318 Parser/Interpreter integration: Eliminated the creation of
15319 complete parse trees for ACPI tables and control methods.
15320 Instead, parse subtrees are created and then deleted as soon as
15321 they are processed (Either entered into the namespace or executed
15322 by the interpreter). This reduces the use of dynamic kernel
15323 memory significantly. (about 10X)
15325 Exception codes broken into classes and renumbered. Be sure to
15326 recompile all code that includes acexcep.h. Hopefully we won't
15327 have to renumber the codes again now that they are split into
15328 classes (environment, programmer, AML code, ACPI table, and
15331 Fixed some additional alignment issues in the Resource Manager
15334 Implemented semaphore tracking in the AcpiExec utility, and fixed
15335 several places where mutexes/semaphores were being unlocked
15336 without a corresponding lock operation. There are no known
15337 semaphore or mutex "leaks" at this time.
15339 Fixed the case where an ASL Return operator is used to return an
15342 -------------------------------------------
15343 Summary of changes for this label: 07_28_00
15345 Fixed a problem with the way addresses were calculated in
15346 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
15347 manifested itself when a Field was created with WordAccess or
15348 DwordAccess, but the field unit defined within the Field was less
15350 than a Word or Dword.
15352 Fixed a problem in AmlDumpOperands() module's loop to pull
15353 operands off of the operand stack to display information. The
15354 problem manifested itself as a TLB error on 64-bit systems when
15355 accessing an operand stack with two or more operands.
15357 Fixed a problem with the PCI configuration space handlers where
15358 context was getting confused between accesses. This required a
15359 change to the generic address space handler and address space
15360 setup definitions. Handlers now get both a global handler context
15361 (this is the one passed in by the user when executing
15362 AcpiInstallAddressSpaceHandler() and a specific region context
15363 that is unique to each region (For example, the _ADR, _SEG and
15364 _BBN values associated with a specific region). The generic
15365 function definitions have changed to the following:
15367 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
15368 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
15369 *HandlerContext, // This used to be void *Context void
15370 *RegionContext); // This is an additional parameter
15372 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
15373 RegionHandle, UINT32 Function, void *HandlerContext, void
15374 **RegionContext); // This used to be **ReturnContext
15376 -------------------------------------------
15377 Summary of changes for this label: 07_21_00
15379 Major file consolidation and rename. All files within the
15380 interpreter have been renamed as well as most header files. This
15381 was done to prevent collisions with existing files in the host
15382 OSs -- filenames such as "config.h" and "global.h" seem to be
15383 quite common. The VC project files have been updated. All
15384 makefiles will require modification.
15386 The parser/interpreter integration continues in Phase 5 with the
15387 implementation of a complete 2-pass parse (the AML is parsed
15388 twice) for each table; This avoids the construction of a huge
15389 parse tree and therefore reduces the amount of dynamic memory
15390 required by the subsystem. Greater use of the parse object cache
15391 means that performance is unaffected.
15393 Many comments from the two code reviews have been rolled in.
15395 The 64-bit alignment support is complete.
15397 -------------------------------------------
15398 Summary of changes for this label: 06_30_00
15400 With a nod and a tip of the hat to the technology of yesteryear,
15401 we've added support in the source code for 80 column output
15402 devices. The code is now mostly constrained to 80 columns or
15403 less to support environments and editors that 1) cannot display
15404 or print more than 80 characters on a single line, and 2) cannot
15405 disable line wrapping.
15407 A major restructuring of the namespace data structure has been
15408 completed. The result is 1) cleaner and more
15409 understandable/maintainable code, and 2) a significant reduction
15410 in the dynamic memory requirement for each named ACPI object
15413 -------------------------------------------
15414 Summary of changes for this label: 06_23_00
15416 Linux support has been added. In order to obtain approval to get
15417 the ACPI CA subsystem into the Linux kernel, we've had to make
15418 quite a few changes to the base subsystem that will affect all
15419 users (all the changes are generic and OS- independent). The
15420 effects of these global changes have been somewhat far reaching.
15421 Files have been merged and/or renamed and interfaces have been
15422 renamed. The major changes are described below.
15424 Osd* interfaces renamed to AcpiOs* to eliminate namespace
15425 pollution/confusion within our target kernels. All OSD
15426 interfaces must be modified to match the new naming convention.
15428 Files merged across the subsystem. A number of the smaller source
15429 and header files have been merged to reduce the file count and
15430 increase the density of the existing files. There are too many
15431 to list here. In general, makefiles that call out individual
15432 files will require rebuilding.
15434 Interpreter files renamed. All interpreter files now have the
15435 prefix am* instead of ie* and is*.
15437 Header files renamed: The acapi.h file is now acpixf.h. The
15438 acpiosd.h file is now acpiosxf.h. We are removing references to
15439 the acronym "API" since it is somewhat windowsy. The new name is
15440 "external interface" or xface or xf in the filenames.j
15443 All manifest constants have been forced to upper case (some were
15444 mixed case.) Also, the string "ACPI_" has been prepended to many
15445 (not all) of the constants, typedefs, and structs.
15447 The globals "DebugLevel" and "DebugLayer" have been renamed
15448 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
15450 All other globals within the subsystem are now prefixed with
15451 "AcpiGbl_" Internal procedures within the subsystem are now
15452 prefixed with "Acpi" (with only a few exceptions). The original
15453 two-letter abbreviation for the subcomponent remains after "Acpi"
15454 - for example, CmCallocate became AcpiCmCallocate.
15456 Added a source code translation/conversion utility. Used to
15457 generate the Linux source code, it can be modified to generate
15458 other types of source as well. Can also be used to cleanup
15459 existing source by removing extraneous spaces and blank lines.
15460 Found in tools/acpisrc/*
15462 OsdUnMapMemory was renamed to OsdUnmapMemory and then
15463 AcpiOsUnmapMemory. (UnMap became Unmap).
15465 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
15466 When set to one, this indicates that the caller wants to use the
15468 semaphore as a mutex, not a counting semaphore. ACPI CA uses
15469 both types. However, implementers of this call may want to use
15470 different OS primitives depending on the type of semaphore
15471 requested. For example, some operating systems provide separate
15473 "mutex" and "semaphore" interfaces - where the mutex interface is
15474 much faster because it doesn't have all the overhead of a full
15475 semaphore implementation.
15477 Fixed a deadlock problem where a method that accesses the PCI
15478 address space can block forever if it is the first access to the
15481 -------------------------------------------
15482 Summary of changes for this label: 06_02_00
15484 Support for environments that cannot handle unaligned data
15485 accesses (e.g. firmware and OS environments devoid of alignment
15486 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
15487 been added (via configurable macros) in these three areas: -
15488 Transfer of data from the raw AML byte stream is done via byte
15489 moves instead of word/dword/qword moves. - External objects are
15490 aligned within the user buffer, including package elements (sub-
15491 objects). - Conversion of name strings to UINT32 Acpi Names is now
15494 The Store operator was modified to mimic Microsoft's
15495 implementation when storing to a Buffer Field.
15497 Added a check of the BM_STS bit before entering C3.
15499 The methods subdirectory has been obsoleted and removed. A new
15500 file, cmeval.c subsumes the functionality.
15502 A 16-bit (DOS) version of AcpiExec has been developed. The
15503 makefile is under the acpiexec directory.