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  1. ----------------------------------------
  2. 23 June 2011. Summary of changes for version 20110623:
  3.  
  4. 1) ACPI CA Core Subsystem:
  5.  
  6. Updated the predefined name repair mechanism to not attempt repair of a _TSS
  7. return object if a _PSS object is present. We can only sort the _TSS return
  8. package if there is no _PSS within the same scope. This is because if _PSS is
  9. present, the ACPI specification dictates that the _TSS Power Dissipation field
  10. is to be ignored, and therefore some BIOSs leave garbage values in the _TSS
  11. Power field(s). In this case, it is best to just return the _TSS package as-
  12. is. Reported by, and fixed with assistance from Fenghua Yu.
  13.  
  14. Added an option to globally disable the control method return value validation
  15. and repair. This runtime option can be used to disable return value repair if
  16. this is causing a problem on a particular machine. Also added an option to
  17. AcpiExec (-dr) to set this disable flag.
  18.  
  19. All makefiles and project files: Major changes to improve generation of ACPICA
  20. tools. ACPICA BZ 912:
  21.     Reduce default optimization levels to improve compatibility
  22.     For Linux, add strict-aliasing=0 for gcc 4
  23.     Cleanup and simplify use of command line defines
  24.     Cleanup multithread library support
  25.     Improve usage messages
  26.  
  27. Linux-specific header: update handling of THREAD_ID and pthread. For the 32-
  28. bit case, improve casting to eliminate possible warnings, especially with the
  29. acpica tools.
  30.  
  31. Example Code and Data Size: These are the sizes for the OS-independent
  32. acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
  33. version of the code includes the debug output trace mechanism and has a much
  34. larger code and data size.
  35.  
  36.   Previous Release (VC 9.0):
  37.     Non-Debug Version:  90.1K Code, 23.9K Data, 114.0K Total
  38.     Debug Version:     165.6K Code, 68.4K Data, 234.0K Total
  39.   Current Release (VC 9.0):
  40.     Non-Debug Version:  90.2K Code, 23.9K Data, 114.1K Total
  41.     Debug Version:     165.6K Code, 68.4K Data, 234.0K Total
  42.  
  43. 2) iASL Compiler/Disassembler and Tools:
  44.  
  45. With this release, a new utility named "acpihelp" has been added to the ACPICA
  46. package. This utility summarizes the ACPI specification chapters for the ASL
  47. and AML languages. It generates under Linux/Unix as well as Windows, and
  48. provides the following functionality:
  49.     Find/display ASL operator(s) -- with description and syntax.
  50.     Find/display ASL keyword(s) -- with exact spelling and descriptions.
  51.     Find/display ACPI predefined name(s) -- with description, number
  52.         of arguments, and the return value data type.
  53.     Find/display AML opcode name(s) -- with opcode, arguments, and grammar.
  54.     Decode/display AML opcode -- with opcode name, arguments, and grammar.
  55.  
  56. Service Layers: Make multi-thread support configurable. Conditionally compile
  57. the multi-thread support so that threading libraries will not be linked if not
  58. necessary. The only tool that requires multi-thread support is AcpiExec.
  59.  
  60. iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of
  61. Bison appear to want the interface to yyerror to be a const char * (or at
  62. least this is a problem when generating iASL on some systems.) ACPICA BZ 923
  63. Pierre Lejeune.
  64.  
  65. Tools: Fix for systems where O_BINARY is not defined. Only used for Windows
  66. versions of the tools.
  67.  
  68. ----------------------------------------
  69. 27 May 2011. Summary of changes for version 20110527:
  70.  
  71. 1) ACPI CA Core Subsystem:
  72.  
  73. ASL Load() operator: Reinstate most restrictions on the incoming ACPI table
  74. signature. Now, only allow SSDT, OEMx, and a null signature. History:
  75.     1) Originally, we checked the table signature for "SSDT" or "PSDT".
  76.        (PSDT is now obsolete.)
  77.     2) We added support for OEMx tables, signature "OEM" plus a fourth
  78.        "don't care" character.
  79.     3) Valid tables were encountered with a null signature, so we just
  80.        gave up on validating the signature, (05/2008).
  81.     4) We encountered non-AML tables such as the MADT, which caused
  82.        interpreter errors and kernel faults. So now, we once again allow
  83.        only SSDT, OEMx, and now, also a null signature. (05/2011).
  84.  
  85. Added the missing _TDL predefined name to the global name list in order to
  86. enable validation. Affects both the core ACPICA code and the iASL compiler.
  87.  
  88. Example Code and Data Size: These are the sizes for the OS-independent
  89. acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
  90. version of the code includes the debug output trace mechanism and has a much
  91. larger code and data size.
  92.  
  93.   Previous Release (VC 9.0):
  94.     Non-Debug Version:  90.0K Code, 23.8K Data, 113.8K Total
  95.     Debug Version:     164.5K Code, 68.0K Data, 232.5K Total
  96.   Current Release (VC 9.0):
  97.     Non-Debug Version:  90.1K Code, 23.9K Data, 114.0K Total
  98.     Debug Version:     165.6K Code, 68.4K Data, 234.0K Total
  99.  
  100. 2) iASL Compiler/Disassembler and Tools:
  101.  
  102. Debugger/AcpiExec: Implemented support for "complex" method arguments on the
  103. debugger command line. This adds support beyond simple integers -- including
  104. Strings, Buffers, and Packages. Includes support for nested packages.
  105. Increased the default command line buffer size to accommodate these arguments.
  106. See the ACPICA reference for details and syntax. ACPICA BZ 917.
  107.  
  108. Debugger/AcpiExec: Implemented support for "default" method arguments for the
  109. Execute/Debug command. Now, the debugger will always invoke a control method
  110. with the required number of arguments -- even if the command line specifies
  111. none or insufficient arguments. It uses default integer values for any missing
  112. arguments. Also fixes a bug where only six method arguments maximum were
  113. supported instead of the required seven.
  114.  
  115. Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and
  116. also return status in order to prevent buffer overruns. See the ACPICA
  117. reference for details and syntax. ACPICA BZ 921
  118.  
  119. iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
  120. makefiles to simplify support for the two different but similar parser
  121. generators, bison and yacc.
  122.  
  123. Updated the generic unix makefile for gcc 4. The default gcc version is now
  124. expected to be 4 or greater, since options specific to gcc 4 are used.
  125.  
  126. ----------------------------------------
  127. 13 April 2011. Summary of changes for version 20110413:
  128.  
  129. 1) ACPI CA Core Subsystem:
  130.  
  131. Implemented support to execute a so-called "orphan" _REG method under the EC
  132. device. This change will force the execution of a _REG method underneath the
  133. EC
  134. device even if there is no corresponding operation region of type
  135. EmbeddedControl. Fixes a problem seen on some machines and apparently is
  136. compatible with Windows behavior. ACPICA BZ 875.
  137.  
  138. Added more predefined methods that are eligible for automatic NULL package
  139. element removal. This change adds another group of predefined names to the
  140. list
  141. of names that can be repaired by having NULL package elements dynamically
  142. removed. This group are those methods that return a single variable-length
  143. package containing simple data types such as integers, buffers, strings. This
  144. includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL,
  145. _Sx,
  146. and _TZD. ACPICA BZ 914.
  147.  
  148. Split and segregated all internal global lock functions to a new file,
  149. evglock.c.
  150.  
  151. Updated internal address SpaceID for DataTable regions. Moved this internal
  152. space
  153. id in preparation for ACPI 5.0 changes that will include some new space IDs.
  154. This
  155. change should not affect user/host code.
  156.  
  157. Example Code and Data Size: These are the sizes for the OS-independent
  158. acpica.lib
  159. produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of
  160. the code includes the debug output trace mechanism and has a much larger code
  161. and
  162. data size.
  163.  
  164.   Previous Release (VC 9.0):
  165.     Non-Debug Version:  89.8K Code, 23.8K Data, 113.6K Total
  166.     Debug Version:     164.2K Code, 67.9K Data, 232.1K Total
  167.   Current Release (VC 9.0):
  168.     Non-Debug Version:  90.0K Code, 23.8K Data, 113.8K Total
  169.     Debug Version:     164.5K Code, 68.0K Data, 232.5K Total
  170.  
  171. 2) iASL Compiler/Disassembler and Tools:
  172.  
  173. iASL/DTC: Major update for new grammar features. Allow generic data types in
  174. custom ACPI tables. Field names are now optional. Any line can be split to
  175. multiple lines using the continuation char (\). Large buffers now use line-
  176. continuation character(s) and no colon on the continuation lines. See the
  177. grammar
  178. update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore.
  179.  
  180. iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements.
  181. Since the parser stuffs a "zero" as the return value for these statements (due
  182. to
  183. the underlying AML grammar), they were seen as "return with value" by the iASL
  184. semantic checking. They are now seen correctly as "null" return statements.
  185.  
  186. iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a
  187. check for each _REG to ensure that there is in fact a corresponding operation
  188. region declaration in the same scope. If not, the _REG method is not very
  189. useful
  190. since it probably won't be executed. ACPICA BZ 915.
  191.  
  192. iASL/DTC: Finish support for expression evaluation. Added a new expression
  193. parser
  194. that implements c-style operator precedence and parenthesization. ACPICA
  195. bugzilla
  196. 908.
  197.  
  198. Disassembler/DTC: Remove support for () and <> style comments in data tables.
  199. Now
  200. that DTC has full expression support, we don't want to have comment strings
  201. that
  202. start with a parentheses or a less-than symbol. Now, only the standard /* and
  203. //
  204. comments are supported, as well as the bracket [] comments.
  205.  
  206. AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
  207. "unusual"
  208. headers in the acpidump file. Update the header validation to support these
  209. tables. Problem introduced in previous AcpiXtract version in the change to
  210. support "wrong checksum" error messages emitted by acpidump utility.
  211.  
  212. iASL: Add a * option to generate all template files (as a synonym for ALL) as
  213. in
  214. "iasl -T *" or "iasl -T ALL".
  215.  
  216. iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely
  217. abort the compiler on "fatal" errors, simply should abort the current compile.
  218. This allows multiple compiles with a single (possibly wildcard) compiler
  219. invocation.
  220.  
  221. ----------------------------------------
  222. 16 March 2011. Summary of changes for version 20110316:
  223.  
  224. 1) ACPI CA Core Subsystem:
  225.  
  226. Fixed a problem caused by a _PRW method appearing at the namespace root scope
  227. during the setup of wake GPEs. A fault could occur if a _PRW directly under
  228. the
  229. root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
  230.  
  231. Implemented support for "spurious" Global Lock interrupts. On some systems, a
  232. global lock interrupt can occur without the pending flag being set. Upon a GL
  233. interrupt, we now ensure that a thread is actually waiting for the lock before
  234. signaling GL availability. Rafael Wysocki, Bob Moore.
  235.  
  236. Example Code and Data Size: These are the sizes for the OS-independent
  237. acpica.lib
  238. produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of
  239. the code includes the debug output trace mechanism and has a much larger code
  240. and
  241. data size.
  242.  
  243.   Previous Release (VC 9.0):
  244.     Non-Debug Version:  89.7K Code, 23.7K Data, 113.4K Total
  245.     Debug Version:     163.9K Code, 67.5K Data, 231.4K Total
  246.   Current Release (VC 9.0):
  247.     Non-Debug Version:  89.8K Code, 23.8K Data, 113.6K Total
  248.     Debug Version:     164.2K Code, 67.9K Data, 232.1K Total
  249.  
  250. 2) iASL Compiler/Disassembler and Tools:
  251.  
  252. Implemented full support for the "SLIC" ACPI table. Includes support in the
  253. header files, disassembler, table compiler, and template generator. Bob Moore,
  254. Lin Ming.
  255.  
  256. AcpiXtract: Correctly handle embedded comments and messages from AcpiDump.
  257. Apparently some or all versions of acpidump will occasionally emit a comment
  258. like
  259. "Wrong checksum", etc., into the dump file. This was causing problems for
  260. AcpiXtract. ACPICA BZ 905.
  261.  
  262. iASL: Fix the Linux makefile by removing an inadvertent double file inclusion.
  263. ACPICA BZ 913.
  264.  
  265. AcpiExec: Update installation of operation region handlers. Install one
  266. handler
  267. for a user-defined address space. This is used by the ASL test suite (ASLTS).
  268.  
  269. ----------------------------------------
  270. 11 February 2011. Summary of changes for version 20110211:
  271.  
  272. 1) ACPI CA Core Subsystem:
  273.  
  274. Added a mechanism to defer _REG methods for some early-installed handlers.
  275. Most user handlers should be installed before call to AcpiEnableSubsystem.
  276. However, Event handlers and region handlers should be installed after
  277. AcpiInitializeObjects. Override handlers for the "default" regions should be
  278. installed early, however. This change executes all _REG methods for the
  279. default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
  280. chicken/egg issues between them. ACPICA BZ 848.
  281.  
  282. Implemented an optimization for GPE detection. This optimization will simply
  283. ignore GPE registers that contain no enabled GPEs -- there is no need to
  284. read the register since this information is available internally. This
  285. becomes more important on machines with a large GPE space. ACPICA bugzilla
  286. 884. Lin Ming. Suggestion from Joe Liu.
  287.  
  288. Removed all use of the highly unreliable FADT revision field. The revision
  289. number in the FADT has been found to be completely unreliable and cannot be
  290. trusted. Only the actual table length can be used to infer the version. This
  291. change updates the ACPICA core and the disassembler so that both no longer
  292. even look at the FADT version and instead depend solely upon the FADT
  293. length.
  294.  
  295. Fix an unresolved name issue for the no-debug and no-error-message source
  296. generation cases. The _AcpiModuleName was left undefined in these cases, but
  297. it is actually needed as a parameter to some interfaces. Define
  298. _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
  299.  
  300. Split several large files (makefiles and project files updated)
  301.   utglobal.c   -> utdecode.c
  302.   dbcomds.c    -> dbmethod.c dbnames.c
  303.   dsopcode.c   -> dsargs.c dscontrol.c
  304.   dsload.c     -> dsload2.c
  305.   aslanalyze.c -> aslbtypes.c aslwalks.c
  306.  
  307. Example Code and Data Size: These are the sizes for the OS-independent
  308. acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
  309. debug version of the code includes the debug output trace mechanism and has
  310. a much larger code and data size.
  311.  
  312.   Previous Release (VC 9.0):
  313.     Non-Debug Version:  89.7K Code, 23.7K Data, 113.4K Total
  314.     Debug Version:     163.9K Code, 67.5K Data, 231.4K Total
  315.   Current Release (VC 9.0):
  316.     Non-Debug Version:  89.7K Code, 23.7K Data, 113.4K Total
  317.     Debug Version:     163.9K Code, 67.5K Data, 231.4K Total
  318.  
  319. 2) iASL Compiler/Disassembler and Tools:
  320.  
  321. iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
  322. These are useful C-style macros with the standard definitions. ACPICA
  323. bugzilla 898.
  324.  
  325. iASL/DTC: Added support for integer expressions and labels. Support for full
  326. expressions for all integer fields in all ACPI tables. Support for labels in
  327. "generic" portions of tables such as UEFI. See the iASL reference manual.
  328.  
  329. Debugger: Added a command to display the status of global handlers. The
  330. "handlers" command will display op region, fixed event, and miscellaneous
  331. global handlers. installation status -- and for op regions, whether default
  332. or user-installed handler will be used.
  333.  
  334. iASL: Warn if reserved method incorrectly returns a value. Many predefined
  335. names are defined such that they do not return a value. If implemented as a
  336. method, issue a warning if such a name explicitly returns a value. ACPICA
  337. Bugzilla 855.
  338.  
  339. iASL: Added detection of GPE method name conflicts. Detects a conflict where
  340. there are two GPE methods of the form _Lxy and _Exy in the same scope. (For
  341. example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
  342.  
  343. iASL/DTC: Fixed a couple input scanner issues with comments and line
  344. numbers. Comment remover could get confused and miss a comment ending. Fixed
  345. a problem with line counter maintenance.
  346.  
  347. iASL/DTC: Reduced the severity of some errors from fatal to error. There is
  348. no need to abort on simple errors within a field definition.
  349.  
  350. Debugger: Simplified the output of the help command. All help output now in
  351. a single screen, instead of help subcommands. ACPICA Bugzilla 897.
  352.  
  353. ----------------------------------------
  354. 12 January 2011. Summary of changes for version 20110112:
  355.  
  356. 1) ACPI CA Core Subsystem:
  357.  
  358. Fixed a race condition between method execution and namespace walks that can
  359. possibly cause a fault. The problem was apparently introduced in version
  360. 20100528 as a result of a performance optimization that reduces the number of
  361. namespace walks upon method exit by using the delete_namespace_subtree
  362. function instead of the delete_namespace_by_owner function used previously.
  363. Bug is a missing namespace lock in the delete_namespace_subtree function.
  364. dana.myers@oracle.com
  365.  
  366. Fixed several issues and a possible fault with the automatic "serialized"
  367. method support. History: This support changes a method to "serialized" on the
  368. fly if the method generates an AE_ALREADY_EXISTS error, indicating the
  369. possibility that it cannot handle reentrancy. This fix repairs a couple of
  370. issues seen in the field, especially on machines with many cores:
  371.  
  372.     1) Delete method children only upon the exit of the last thread,
  373.        so as to not delete objects out from under other running threads
  374.       (and possibly causing a fault.)
  375.     2) Set the "serialized" bit for the method only upon the exit of the
  376.        Last thread, so as to not cause deadlock when running threads
  377.        attempt to exit.
  378.     3) Cleanup the use of the AML "MethodFlags" and internal method flags
  379.        so that there is no longer any confusion between the two.
  380.  
  381.     Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
  382.  
  383. Debugger: Now lock the namespace for duration of a namespace dump. Prevents
  384. issues if the namespace is changing dynamically underneath the debugger.
  385. Especially affects temporary namespace nodes, since the debugger displays
  386. these also.
  387.  
  388. Updated the ordering of include files. The ACPICA headers should appear
  389. before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set
  390. any necessary compiler-specific defines, etc. Affects the ACPI-related tools
  391. and utilities.
  392.  
  393. Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright
  394. to all module headers and signons, including the Linux header. This affects
  395. virtually every file in the ACPICA core subsystem, iASL compiler, and all
  396. utilities.
  397.  
  398. Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
  399. project files for VC++ 6.0 are now obsolete. New project files can be found
  400. under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
  401. details.
  402.  
  403. Example Code and Data Size: These are the sizes for the OS-independent
  404. acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
  405. debug version of the code includes the debug output trace mechanism and has a
  406. much larger code and data size.
  407.  
  408.   Previous Release (VC 6.0):
  409.     Non-Debug Version:  89.8K Code, 18.9K Data, 108.7K Total
  410.     Debug Version:     166.6K Code, 52.1K Data, 218.7K Total
  411.   Current Release (VC 9.0):
  412.     Non-Debug Version:  89.7K Code, 23.7K Data, 113.4K Total
  413.     Debug Version:     163.9K Code, 67.5K Data, 231.4K Total
  414.  
  415. 2) iASL Compiler/Disassembler and Tools:
  416.  
  417. iASL: Added generic data types to the Data Table compiler. Add "generic" data
  418. types such as UINT32, String, Unicode, etc., to simplify the generation of
  419. platform-defined tables such as UEFI. Lin Ming.
  420.  
  421. iASL: Added listing support for the Data Table Compiler. Adds listing support
  422. (-l) to display actual binary output for each line of input code.
  423.  
  424. ----------------------------------------
  425. 09 December 2010. Summary of changes for version 20101209:
  426.  
  427. 1) ACPI CA Core Subsystem:
  428.  
  429. Completed the major overhaul of the GPE support code that was begun in July
  430. 2010. Major features include: removal of _PRW execution in ACPICA (host
  431. executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
  432. changes to existing interfaces, simplification of GPE handler operation, and
  433. a handful of new interfaces:
  434.  
  435.     AcpiUpdateAllGpes
  436.     AcpiFinishGpe
  437.     AcpiSetupGpeForWake
  438.     AcpiSetGpeWakeMask
  439.     One new file, evxfgpe.c to consolidate all external GPE interfaces.
  440.  
  441. See the ACPICA Programmer Reference for full details and programming
  442. information. See the new section 4.4 "General Purpose Event (GPE) Support"
  443. for a full overview, and section 8.7 "ACPI General Purpose Event Management"
  444. for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming,
  445. Bob Moore, Rafael Wysocki.
  446.  
  447. Implemented a new GPE feature for Windows compatibility, the "Implicit Wake
  448. GPE Notify". This feature will automatically issue a Notify(2) on a device
  449. when a Wake GPE is received if there is no corresponding GPE method or
  450. handler. ACPICA BZ 870.
  451.  
  452. Fixed a problem with the Scope() operator during table parse and load phase.
  453. During load phase (table load or method execution), the scope operator should
  454. not enter the target into the namespace. Instead, it should open a new scope
  455. at the target location. Linux BZ 19462, ACPICA BZ 882.
  456.  
  457. Example Code and Data Size: These are the sizes for the OS-independent
  458. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  459. debug version of the code includes the debug output trace mechanism and has a
  460. much larger code and data size.
  461.  
  462.   Previous Release:
  463.     Non-Debug Version:  89.8K Code, 18.9K Data, 108.7K Total
  464.     Debug Version:     166.6K Code, 52.1K Data, 218.7K Total
  465.   Current Release:
  466.     Non-Debug Version:  89.9K Code, 19.0K Data, 108.9K Total
  467.     Debug Version:     166.3K Code, 52.1K Data, 218.4K Total
  468.  
  469. 2) iASL Compiler/Disassembler and Tools:
  470.  
  471. iASL: Relax the alphanumeric restriction on _CID strings. These strings are
  472. "bus-specific" per the ACPI specification, and therefore any characters are
  473. acceptable. The only checks that can be performed are for a null string and
  474. perhaps for a leading asterisk. ACPICA BZ 886.
  475.  
  476. iASL: Fixed a problem where a syntax error that caused a premature EOF
  477. condition on the source file emitted a very confusing error message. The
  478. premature EOF is now detected correctly. ACPICA BZ 891.
  479.  
  480. Disassembler: Decode the AccessSize within a Generic Address Structure (byte
  481. access, word access, etc.) Note, this field does not allow arbitrary bit
  482. access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
  483.  
  484. New: AcpiNames utility - Example namespace dump utility. Shows an example of
  485. ACPICA configuration for a minimal namespace dump utility. Uses table and
  486. namespace managers, but no AML interpreter. Does not add any functionality
  487. over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
  488. partition and configure ACPICA. ACPICA BZ 883.
  489.  
  490. AML Debugger: Increased the debugger buffer size for method return objects.
  491. Was 4K, increased to 16K. Also enhanced error messages for debugger method
  492. execution, including the buffer overflow case.
  493.  
  494. ----------------------------------------
  495. 13 October 2010. Summary of changes for version 20101013:
  496.  
  497. 1) ACPI CA Core Subsystem:
  498.  
  499. Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now
  500. clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
  501. HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
  502.  
  503. Changed the type of the predefined namespace object _TZ from ThermalZone to
  504. Device. This was found to be confusing to the host software that processes
  505. the various thermal zones, since _TZ is not really a ThermalZone. However, a
  506. Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
  507. Zhang.
  508.  
  509. Added Windows Vista SP2 to the list of supported _OSI strings. The actual
  510. string is "Windows 2006 SP2".
  511.  
  512. Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair
  513. code automatically repairs _HID-related strings, this type of code is no
  514. longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878.
  515.  
  516. Example Code and Data Size: These are the sizes for the OS-independent
  517. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  518. debug version of the code includes the debug output trace mechanism and has a
  519. much larger code and data size.
  520.  
  521.   Previous Release:
  522.     Non-Debug Version:  89.9K Code, 19.0K Data, 108.9K Total
  523.     Debug Version:     166.3K Code, 52.1K Data, 218.4K Total
  524.   Current Release:
  525.     Non-Debug Version:  89.9K Code, 19.0K Data, 108.9K Total
  526.     Debug Version:     166.3K Code, 52.1K Data, 218.4K Total
  527.  
  528. 2) iASL Compiler/Disassembler and Tools:
  529.  
  530. iASL: Implemented additional compile-time validation for _HID strings. The
  531. non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of
  532. the string must be exactly seven or eight characters. For both _HID and _CID
  533. strings, all characters must be alphanumeric. ACPICA BZ 874.
  534.  
  535. iASL: Allow certain "null" resource descriptors. Some BIOS code creates
  536. descriptors that are mostly or all zeros, with the expectation that they will
  537. be filled in at runtime. iASL now allows this as long as there is a "resource
  538. tag" (name) associated with the descriptor, which gives the ASL a handle
  539. needed to modify the descriptor. ACPICA BZ 873.
  540.  
  541. Added single-thread support to the generic Unix application OSL. Primarily
  542. for iASL support, this change removes the use of semaphores in the single-
  543. threaded ACPICA tools/applications - increasing performance. The
  544. _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
  545. option. ACPICA BZ 879.
  546.  
  547. AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support
  548. for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
  549.  
  550. iASL: Moved all compiler messages to a new file, aslmessages.h.
  551.  
  552. ----------------------------------------
  553. 15 September 2010. Summary of changes for version 20100915:
  554.  
  555. 1) ACPI CA Core Subsystem:
  556.  
  557. Removed the AcpiOsDerivePciId OSL interface. The various host implementations
  558. of this function were not OS-dependent and are now obsolete and can be
  559. removed from all host OSLs. This function has been replaced by
  560. AcpiHwDerivePciId, which is now part of the ACPICA core code.
  561. AcpiHwDerivePciId has been implemented without recursion. Adds one new
  562. module, hwpci.c. ACPICA BZ 857.
  563.  
  564. Implemented a dynamic repair for _HID and _CID strings. The following
  565. problems are now repaired at runtime: 1) Remove a leading asterisk in the
  566. string, and 2) the entire string is uppercased. Both repairs are in
  567. accordance with the ACPI specification and will simplify host driver code.
  568. ACPICA BZ 871.
  569.  
  570. The ACPI_THREAD_ID type is no longer configurable, internally it is now
  571. always UINT64. This simplifies the ACPICA code, especially any printf output.
  572. UINT64 is the only common data type for all thread_id types across all
  573. operating systems. It is now up to the host OSL to cast the native thread_id
  574. type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId).
  575. Lin Ming, Bob Moore.
  576.  
  577. Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline"
  578. keyword is not standard across compilers, and this type allows inline to be
  579. configured on a per-compiler basis. Lin Ming.
  580.  
  581. Made the system global AcpiGbl_SystemAwakeAndRunning publically available.
  582. Added an extern for this boolean in acpixf.h. Some hosts utilize this value
  583. during suspend/restore operations. ACPICA BZ 869.
  584.  
  585. All code that implements error/warning messages with the "ACPI:" prefix has
  586. been moved to a new module, utxferror.c.
  587.  
  588. The UINT64_OVERLAY was moved to utmath.c, which is the only module where it
  589. is used. ACPICA BZ 829. Lin Ming, Bob Moore.
  590.  
  591. Example Code and Data Size: These are the sizes for the OS-independent
  592. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  593. debug version of the code includes the debug output trace mechanism and has a
  594. much larger code and data size.
  595.  
  596.   Previous Release:
  597.     Non-Debug Version:  89.1K Code, 19.0K Data, 108.1K Total
  598.     Debug Version:     165.1K Code, 51.9K Data, 217.0K Total
  599.   Current Release:
  600.     Non-Debug Version:  89.9K Code, 19.0K Data, 108.9K Total
  601.     Debug Version:     166.3K Code, 52.1K Data, 218.4K Total
  602.  
  603. 2) iASL Compiler/Disassembler and Tools:
  604.  
  605. iASL/Disassembler: Write ACPI errors to stderr instead of the output file.
  606. This keeps the output files free of random error messages that may originate
  607. from within the namespace/interpreter code. Used this opportunity to merge
  608. all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
  609. 866. Lin Ming, Bob Moore.
  610.  
  611. Tools: update some printfs for ansi warnings on size_t. Handle width change
  612. of size_t on 32-bit versus 64-bit generations. Lin Ming.
  613.  
  614. ----------------------------------------
  615. 06 August 2010. Summary of changes for version 20100806:
  616.  
  617. 1) ACPI CA Core Subsystem:
  618.  
  619. Designed and implemented a new host interface to the _OSI support code. This
  620. will allow the host to dynamically add or remove multiple _OSI strings, as
  621. well as install an optional handler that is called for each _OSI invocation.
  622. Also added a new AML debugger command, 'osi' to display and modify the global
  623. _OSI string table, and test support in the AcpiExec utility. See the ACPICA
  624. reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
  625. New Functions:
  626.     AcpiInstallInterface - Add an _OSI string.
  627.     AcpiRemoveInterface - Delete an _OSI string.
  628.     AcpiInstallInterfaceHandler - Install optional _OSI handler.
  629. Obsolete Functions:
  630.     AcpiOsValidateInterface - no longer used.
  631. New Files:
  632.     source/components/utilities/utosi.c
  633.  
  634. Re-introduced the support to enable multi-byte transfers for Embedded
  635. Controller (EC) operation regions. A reported problem was found to be a bug
  636. in the host OS, not in the multi-byte support. Previously, the maximum data
  637. size passed to the EC operation region handler was a single byte. There are
  638. often EC Fields larger than one byte that need to be transferred, and it is
  639. useful for the EC driver to lock these as a single transaction. This change
  640. enables single transfers larger than 8 bits. This effectively changes the
  641. access to the EC space from ByteAcc to AnyAcc, and will probably require
  642. changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit
  643. transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
  644.  
  645. Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
  646. prototype in acpiosxf.h had the output value pointer as a (void *).
  647. It should be a (UINT64 *). This may affect some host OSL code.
  648.  
  649. Fixed a couple problems with the recently modified Linux makefiles for iASL
  650. and AcpiExec. These new makefiles place the generated object files in the
  651. local directory so that there can be no collisions between the files that are
  652. shared between them that are compiled with different options.
  653.  
  654. Example Code and Data Size: These are the sizes for the OS-independent
  655. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  656. debug version of the code includes the debug output trace mechanism and has a
  657. much larger code and data size.
  658.  
  659.   Previous Release:
  660.     Non-Debug Version:  88.3K Code, 18.8K Data, 107.1K Total
  661.     Debug Version:     164.0K Code, 51.5K Data, 215.5K Total
  662.   Current Release:
  663.     Non-Debug Version:  89.1K Code, 19.0K Data, 108.1K Total
  664.     Debug Version:     165.1K Code, 51.9K Data, 217.0K Total
  665.  
  666. 2) iASL Compiler/Disassembler and Tools:
  667.  
  668. iASL/Disassembler: Added a new option (-da, "disassemble all") to load the
  669. namespace from and disassemble an entire group of AML files. Useful for
  670. loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and
  671. disassembling with one simple command. ACPICA BZ 865. Lin Ming.
  672.  
  673. iASL: Allow multiple invocations of -e option. This change allows multiple
  674. uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834.
  675. Lin Ming.
  676.  
  677. ----------------------------------------
  678. 02 July 2010. Summary of changes for version 20100702:
  679.  
  680. 1) ACPI CA Core Subsystem:
  681.  
  682. Implemented several updates to the recently added GPE reference count
  683. support. The model for "wake" GPEs is changing to give the host OS complete
  684. control of these GPEs. Eventually, the ACPICA core will not execute any _PRW
  685. methods, since the host already must execute them. Also, additional changes
  686. were made to help ensure that the reference counts are kept in proper
  687. synchronization with reality. Rafael J. Wysocki.
  688.  
  689. 1) Ensure that GPEs are not enabled twice during initialization.
  690. 2) Ensure that GPE enable masks stay in sync with the reference count.
  691. 3) Do not inadvertently enable GPEs when writing GPE registers.
  692. 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
  693. interface. This interface will set or clear individual GPEs for wakeup.
  694. 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces
  695. are now used for "runtime" GPEs only.
  696.  
  697. Changed the behavior of the GPE install/remove handler interfaces. The GPE is
  698. no longer disabled during this process, as it was found to cause problems on
  699. some machines. Rafael J. Wysocki.
  700.  
  701. Reverted a change introduced in version 20100528 to enable Embedded
  702. Controller multi-byte transfers. This change was found to cause problems with
  703. Index Fields and possibly Bank Fields. It will be reintroduced when these
  704. problems have been resolved.
  705.  
  706. Fixed a problem with references to Alias objects within Package Objects. A
  707. reference to an Alias within the definition of a Package was not always
  708. resolved properly. Aliases to objects like Processors, Thermal zones, etc.
  709. were resolved to the actual object instead of a reference to the object as it
  710. should be. Package objects are only allowed to contain integer, string,
  711. buffer, package, and reference objects. Redhat bugzilla 608648.
  712.  
  713. Example Code and Data Size: These are the sizes for the OS-independent
  714. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  715. debug version of the code includes the debug output trace mechanism and has a
  716. much larger code and data size.
  717.  
  718.   Previous Release:
  719.     Non-Debug Version:  88.3K Code, 18.8K Data, 107.1K Total
  720.     Debug Version:     164.1K Code, 51.5K Data, 215.6K Total
  721.   Current Release:
  722.     Non-Debug Version:  88.3K Code, 18.8K Data, 107.1K Total
  723.     Debug Version:     164.0K Code, 51.5K Data, 215.5K Total
  724.  
  725. 2) iASL Compiler/Disassembler and Tools:
  726.  
  727. iASL: Implemented a new compiler subsystem to allow definition and
  728. compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These
  729. are called "ACPI Data Tables", and the new compiler is the "Data Table
  730. Compiler". This compiler is intended to simplify the existing error-prone
  731. process of creating these tables for the BIOS, as well as allowing the
  732. disassembly, modification, recompilation, and override of existing ACPI data
  733. tables. See the iASL User Guide for detailed information.
  734.  
  735. iASL: Implemented a new Template Generator option in support of the new Data
  736. Table Compiler. This option will create examples of all known ACPI tables
  737. that can be used as the basis for table development. See the iASL
  738. documentation and the -T option.
  739.  
  740. Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
  741. Descriptor Table).
  742.  
  743. Updated the Linux makefiles for iASL and AcpiExec to place the generated
  744. object files in the local directory so that there can be no collisions
  745. between the shared files between them that are generated with different
  746. options.
  747.  
  748. Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use
  749. the #define __APPLE__ to enable this support.
  750.  
  751. ----------------------------------------
  752. 28 May 2010. Summary of changes for version 20100528:
  753.  
  754. Note: The ACPI 4.0a specification was released on April 5, 2010 and is
  755. available at www.acpi.info. This is primarily an errata release.
  756.  
  757. 1) ACPI CA Core Subsystem:
  758.  
  759. Undefined ACPI tables: We are looking for the definitions for the following
  760. ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
  761.  
  762. Implemented support to enable multi-byte transfers for Embedded Controller
  763. (EC) operation regions. Previously, the maximum data size passed to the EC
  764. operation region handler was a single byte. There are often EC Fields larger
  765. than one byte that need to be transferred, and it is useful for the EC driver
  766. to lock these as a single transaction. This change enables single transfers
  767. larger than 8 bits. This effectively changes the access to the EC space from
  768. ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded
  769. Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit
  770. transfers. Alexey Starikovskiy, Lin Ming
  771.  
  772. Implemented a performance enhancement for namespace search and access. This
  773. change enhances the performance of namespace searches and walks by adding a
  774. backpointer to the parent in each namespace node. On large namespaces, this
  775. change can improve overall ACPI performance by up to 9X. Adding a pointer to
  776. each namespace node increases the overall size of the internal namespace by
  777. about 5%, since each namespace entry usually consists of both a namespace
  778. node and an ACPI operand object. However, this is the first growth of the
  779. namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
  780.  
  781. Implemented a performance optimization that reduces the number of namespace
  782. walks. On control method exit, only walk the namespace if the method is known
  783. to have created namespace objects outside of its local scope. Previously, the
  784. entire namespace was traversed on each control method exit. This change can
  785. improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore.
  786.  
  787. Added support to truncate I/O addresses to 16 bits for Windows compatibility.
  788. Some ASL code has been seen in the field that inadvertently has bits set
  789. above bit 15. This feature is optional and is enabled if the BIOS requests
  790. any Windows OSI strings. It can also be enabled by the host OS. Matthew
  791. Garrett, Bob Moore.
  792.  
  793. Added support to limit the maximum time for the ASL Sleep() operator. To
  794. prevent accidental deep sleeps, limit the maximum time that Sleep() will
  795. actually sleep. Configurable, the default maximum is two seconds. ACPICA
  796. bugzilla 854.
  797.  
  798. Added run-time validation support for the _WDG and_WED Microsoft predefined
  799. methods. These objects are defined by "Windows Instrumentation", and are not
  800. part of the ACPI spec. ACPICA BZ 860.
  801.  
  802. Expanded all statistic counters used during namespace and device
  803. initialization from 16 to 32 bits in order to support very large namespaces.
  804.  
  805. Replaced all instances of %d in printf format specifiers with %u since nearly
  806. all integers in ACPICA are unsigned.
  807.  
  808. Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned
  809. as AE_NO_HANDLER.
  810.  
  811. Example Code and Data Size: These are the sizes for the OS-independent
  812. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  813. debug version of the code includes the debug output trace mechanism and has a
  814. much larger code and data size.
  815.  
  816.   Previous Release:
  817.     Non-Debug Version:  88.4K Code, 18.8K Data, 107.2K Total
  818.     Debug Version:     164.2K Code, 51.5K Data, 215.7K Total
  819.   Current Release:
  820.     Non-Debug Version:  88.3K Code, 18.8K Data, 107.1K Total
  821.     Debug Version:     164.1K Code, 51.5K Data, 215.6K Total
  822.  
  823. 2) iASL Compiler/Disassembler and Tools:
  824.  
  825. iASL: Added compiler support for the _WDG and_WED Microsoft predefined
  826. methods. These objects are defined by "Windows Instrumentation", and are not
  827. part of the ACPI spec. ACPICA BZ 860.
  828.  
  829. AcpiExec: added option to disable the memory tracking mechanism. The -dt
  830. option will disable the tracking mechanism, which improves performance
  831. considerably.
  832.  
  833. AcpiExec: Restructured the command line options into -d (disable) and -e
  834. (enable) options.
  835.  
  836. ----------------------------------------
  837. 28 April 2010. Summary of changes for version 20100428:
  838.  
  839. 1) ACPI CA Core Subsystem:
  840.  
  841. Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
  842. including FADT-based and GPE Block Devices, execute any _PRW methods in the
  843. new table, and process any _Lxx/_Exx GPE methods in the new table. Any
  844. runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
  845. immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
  846. Devices. Provides compatibility with other ACPI implementations. Two new
  847. files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore.
  848.  
  849. Fixed a regression introduced in version 20100331 within the table manager
  850. where initial table loading could fail. This was introduced in the fix for
  851. AcpiReallocateRootTable. Also, renamed some of fields in the table manager
  852. data structures to clarify their meaning and use.
  853.  
  854. Fixed a possible allocation overrun during internal object copy in
  855. AcpiUtCopySimpleObject. The original code did not correctly handle the case
  856. where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847.
  857.  
  858. Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
  859. possible access beyond end-of-allocation. Also, now fully validate descriptor
  860. (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
  861.  
  862. Example Code and Data Size: These are the sizes for the OS-independent
  863. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  864. debug version of the code includes the debug output trace mechanism and has a
  865. much larger code and data size.
  866.  
  867.   Previous Release:
  868.     Non-Debug Version:  87.9K Code, 18.6K Data, 106.5K Total
  869.     Debug Version:     163.5K Code, 51.3K Data, 214.8K Total
  870.   Current Release:
  871.     Non-Debug Version:  88.4K Code, 18.8K Data, 107.2K Total
  872.     Debug Version:     164.2K Code, 51.5K Data, 215.7K Total
  873.  
  874. 2) iASL Compiler/Disassembler and Tools:
  875.  
  876. iASL: Implemented Min/Max/Len/Gran validation for address resource
  877. descriptors. This change implements validation for the address fields that
  878. are common to all address-type resource descriptors. These checks are
  879. implemented: Checks for valid Min/Max, length within the Min/Max window,
  880. valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per
  881. table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c
  882. and aslrestype2.c files into five new files. ACPICA BZ 840.
  883.  
  884. iASL: Added support for the _Wxx predefined names. This support was missing
  885. and these names were not recognized by the compiler as valid predefined
  886. names. ACPICA BZ 851.
  887.  
  888. iASL: Added an error for all predefined names that are defined to return no
  889. value and thus must be implemented as Control Methods. These include all of
  890. the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
  891. names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
  892.  
  893. iASL: Implemented the -ts option to emit hex AML data in ASL format, as an
  894. ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be
  895. dynamically loaded via the Load() operator. Also cleaned up output for the -
  896. ta and -tc options. ACPICA BZ 853.
  897.  
  898. Tests: Added a new file with examples of extended iASL error checking.
  899. Demonstrates the advanced error checking ability of the iASL compiler.
  900. Available at tests/misc/badcode.asl.
  901.  
  902. ----------------------------------------
  903. 31 March 2010. Summary of changes for version 20100331:
  904.  
  905. 1) ACPI CA Core Subsystem:
  906.  
  907. Completed a major update for the GPE support in order to improve support for
  908. shared GPEs and to simplify both host OS and ACPICA code. Added a reference
  909. count mechanism to support shared GPEs that require multiple device drivers.
  910. Several external interfaces have changed. One external interface has been
  911. removed. One new external interface was added. Most of the GPE external
  912. interfaces now use the GPE spinlock instead of the events mutex (and the
  913. Flags parameter for many GPE interfaces has been removed.) See the updated
  914. ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael
  915. Wysocki. ACPICA BZ 831.
  916.  
  917. Changed:
  918.     AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
  919. Removed:
  920.     AcpiSetGpeType
  921. New:
  922.     AcpiSetGpe
  923.  
  924. Implemented write support for DataTable operation regions. These regions are
  925. defined via the DataTableRegion() operator. Previously, only read support was
  926. implemented. The ACPI specification allows DataTableRegions to be read/write,
  927. however.
  928.  
  929. Implemented a new subsystem option to force a copy of the DSDT to local
  930. memory. Optionally copy the entire DSDT to local memory (instead of simply
  931. mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace
  932. the original DSDT, creating the need for this option. Default is FALSE, do
  933. not copy the DSDT.
  934.  
  935. Implemented detection of a corrupted or replaced DSDT. This change adds
  936. support to detect a DSDT that has been corrupted and/or replaced from outside
  937. the OS (by firmware). This is typically catastrophic for the system, but has
  938. been seen on some machines. Once this problem has been detected, the DSDT
  939. copy option can be enabled via system configuration. Lin Ming, Bob Moore.
  940.  
  941. Fixed two problems with AcpiReallocateRootTable during the root table copy.
  942. When copying the root table to the new allocation, the length used was
  943. incorrect. The new size was used instead of the current table size, meaning
  944. too much data was copied. Also, the count of available slots for ACPI tables
  945. was not set correctly. Alexey Starikovskiy, Bob Moore.
  946.  
  947. Example Code and Data Size: These are the sizes for the OS-independent
  948. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  949. debug version of the code includes the debug output trace mechanism and has a
  950. much larger code and data size.
  951.  
  952.   Previous Release:
  953.     Non-Debug Version:  87.5K Code, 18.4K Data, 105.9K Total
  954.     Debug Version:     163.4K Code, 51.1K Data, 214.5K Total
  955.   Current Release:
  956.     Non-Debug Version:  87.9K Code, 18.6K Data, 106.5K Total
  957.     Debug Version:     163.5K Code, 51.3K Data, 214.8K Total
  958.  
  959. 2) iASL Compiler/Disassembler and Tools:
  960.  
  961. iASL: Implement limited typechecking for values returned from predefined
  962. control methods. The type of any returned static (unnamed) object is now
  963. validated. For example, Return(1). ACPICA BZ 786.
  964.  
  965. iASL: Fixed a predefined name object verification regression. Fixes a problem
  966. introduced in version 20100304. An error is incorrectly generated if a
  967. predefined name is declared as a static named object with a value defined
  968. using the keywords "Zero", "One", or "Ones". Lin Ming.
  969.  
  970. iASL: Added Windows 7 support for the -g option (get local ACPI tables) by
  971. reducing the requested registry access rights. ACPICA BZ 842.
  972.  
  973. Disassembler: fixed a possible fault when generating External() statements.
  974. Introduced in commit ae7d6fd: Properly handle externals with parent-prefix
  975. (carat). Fixes a string length allocation calculation. Lin Ming.
  976.  
  977. ----------------------------------------
  978. 04 March 2010. Summary of changes for version 20100304:
  979.  
  980. 1) ACPI CA Core Subsystem:
  981.  
  982. Fixed a possible problem with the AML Mutex handling function
  983. AcpiExReleaseMutex where the function could fault under the very rare
  984. condition when the interpreter has blocked, the interpreter lock is released,
  985. the interpreter is then reentered via the same thread, and attempts to
  986. acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin
  987. Ming.
  988.  
  989. Implemented additional configuration support for the AML "Debug Object".
  990. Output from the debug object can now be enabled via a global variable,
  991. AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging.
  992. This debug output is now available in the release version of ACPICA instead
  993. of just the debug version. Also, the entire debug output module can now be
  994. configured out of the ACPICA build if desired. One new file added,
  995. executer/exdebug.c. Lin Ming, Bob Moore.
  996.  
  997. Added header support for the ACPI MCHI table (Management Controller Host
  998. Interface Table). This table was added in ACPI 4.0, but the defining document
  999. has only recently become available.
  1000.  
  1001. Standardized output of integer values for ACPICA warnings/errors. Always use
  1002. 0x prefix for hex output, always use %u for unsigned integer decimal output.
  1003. Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400
  1004. invocations.) These invocations were converted from the original
  1005. ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
  1006.  
  1007. Example Code and Data Size: These are the sizes for the OS-independent
  1008. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1009. debug version of the code includes the debug output trace mechanism and has a
  1010. much larger code and data size.
  1011.  
  1012.   Previous Release:
  1013.     Non-Debug Version:  87.1K Code, 18.0K Data, 105.1K Total
  1014.     Debug Version:     163.5K Code, 50.9K Data, 214.4K Total
  1015.   Current Release:
  1016.     Non-Debug Version:  87.5K Code, 18.4K Data, 105.9K Total
  1017.     Debug Version:     163.4K Code, 51.1K Data, 214.5K Total
  1018.  
  1019. 2) iASL Compiler/Disassembler and Tools:
  1020.  
  1021. iASL: Implemented typechecking support for static (non-control method)
  1022. predefined named objects that are declared with the Name() operator. For
  1023. example, the type of this object is now validated to be of type Integer:
  1024. Name(_BBN, 1). This change migrates the compiler to using the core predefined
  1025. name table instead of maintaining a local version. Added a new file,
  1026. aslpredef.c. ACPICA BZ 832.
  1027.  
  1028. Disassembler: Added support for the ACPI 4.0 MCHI table.
  1029.  
  1030. ----------------------------------------
  1031. 21 January 2010. Summary of changes for version 20100121:
  1032.  
  1033. 1) ACPI CA Core Subsystem:
  1034.  
  1035. Added the 2010 copyright to all module headers and signons. This affects
  1036. virtually every file in the ACPICA core subsystem, the iASL compiler, the
  1037. tools/utilities, and the test suites.
  1038.  
  1039. Implemented a change to the AcpiGetDevices interface to eliminate unnecessary
  1040. invocations of the _STA method. In the case where a specific _HID is
  1041. requested, do not run _STA until a _HID match is found. This eliminates
  1042. potentially dozens of _STA calls during a search for a particular device/HID,
  1043. which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
  1044.  
  1045. Implemented an additional repair for predefined method return values. Attempt
  1046. to repair unexpected NULL elements within returned Package objects. Create an
  1047. Integer of value zero, a NULL String, or a zero-length Buffer as appropriate.
  1048. ACPICA BZ 818. Lin Ming, Bob Moore.
  1049.  
  1050. Removed the obsolete ACPI_INTEGER data type. This type was introduced as the
  1051. code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with
  1052. 64-bit AML integers). It is now obsolete and this change removes it from the
  1053. ACPICA code base, replaced by UINT64. The original typedef has been retained
  1054. for now for compatibility with existing device driver code. ACPICA BZ 824.
  1055.  
  1056. Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in
  1057. the parse tree object.
  1058.  
  1059. Added additional warning options for the gcc-4 generation. Updated the source
  1060. accordingly. This includes some code restructuring to eliminate unreachable
  1061. code, elimination of some gotos, elimination of unused return values, some
  1062. additional casting, and removal of redundant declarations.
  1063.  
  1064. Example Code and Data Size: These are the sizes for the OS-independent
  1065. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1066. debug version of the code includes the debug output trace mechanism and has a
  1067. much larger code and data size.
  1068.  
  1069.   Previous Release:
  1070.     Non-Debug Version:  87.0K Code, 18.0K Data, 105.0K Total
  1071.     Debug Version:     163.4K Code, 50.8K Data, 214.2K Total
  1072.   Current Release:
  1073.     Non-Debug Version:  87.1K Code, 18.0K Data, 105.1K Total
  1074.     Debug Version:     163.5K Code, 50.9K Data, 214.4K Total
  1075.  
  1076. 2) iASL Compiler/Disassembler and Tools:
  1077.  
  1078. No functional changes for this release.
  1079.  
  1080. ----------------------------------------
  1081. 14 December 2009. Summary of changes for version 20091214:
  1082.  
  1083. 1) ACPI CA Core Subsystem:
  1084.  
  1085. Enhanced automatic data type conversions for predefined name repairs. This
  1086. change expands the automatic repairs/conversions for predefined name return
  1087. values to make Integers, Strings, and Buffers fully interchangeable. Also, a
  1088. Buffer can be converted to a Package of Integers if necessary. The nsrepair.c
  1089. module was completely restructured. Lin Ming, Bob Moore.
  1090.  
  1091. Implemented automatic removal of null package elements during predefined name
  1092. repairs. This change will automatically remove embedded and trailing NULL
  1093. package elements from returned package objects that are defined to contain a
  1094. variable number of sub-packages. The driver is then presented with a package
  1095. with no null elements to deal with. ACPICA BZ 819.
  1096.  
  1097. Implemented a repair for the predefined _FDE and _GTM names. The expected
  1098. return value for both names is a Buffer of 5 DWORDs. This repair fixes two
  1099. possible problems (both seen in the field), where a package of integers is
  1100. returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim.
  1101.  
  1102. Implemented additional module-level code support. This change will properly
  1103. execute module-level code that is not at the root of the namespace (under a
  1104. Device object, etc.). Now executes the code within the current scope instead
  1105. of the root. ACPICA BZ 762. Lin Ming.
  1106.  
  1107. Fixed possible mutex acquisition errors when running _REG methods. Fixes a
  1108. problem where mutex errors can occur when running a _REG method that is in
  1109. the same scope as a method-defined operation region or an operation region
  1110. under a module-level IF block. This type of code is rare, so the problem has
  1111. not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
  1112.  
  1113. Fixed a possible memory leak during module-level code execution. An object
  1114. could be leaked for each block of executed module-level code if the
  1115. interpreter slack mode is enabled This change deletes any implicitly returned
  1116. object from the module-level code block. Lin Ming.
  1117.  
  1118. Removed messages for successful predefined repair(s). The repair mechanism
  1119. was considered too wordy. Now, messages are only unconditionally emitted if
  1120. the return object cannot be repaired. Existing messages for successful
  1121. repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827.
  1122.  
  1123. Example Code and Data Size: These are the sizes for the OS-independent
  1124. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1125. debug version of the code includes the debug output trace mechanism and has a
  1126. much larger code and data size.
  1127.  
  1128.   Previous Release:
  1129.     Non-Debug Version:  86.6K Code, 18.2K Data, 104.8K Total
  1130.     Debug Version:     162.7K Code, 50.8K Data, 213.5K Total
  1131.   Current Release:
  1132.     Non-Debug Version:  87.0K Code, 18.0K Data, 105.0K Total
  1133.     Debug Version:     163.4K Code, 50.8K Data, 214.2K Total
  1134.  
  1135. 2) iASL Compiler/Disassembler and Tools:
  1136.  
  1137. iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files
  1138. were no longer automatically removed at the termination of the compile.
  1139.  
  1140. acpiexec: Implemented the -f option to specify default region fill value.
  1141. This option specifies the value used to initialize buffers that simulate
  1142. operation regions. Default value is zero. Useful for debugging problems that
  1143. depend on a specific initial value for a region or field.
  1144.  
  1145. ----------------------------------------
  1146. 12 November 2009. Summary of changes for version 20091112:
  1147.  
  1148. 1) ACPI CA Core Subsystem:
  1149.  
  1150. Implemented a post-order callback to AcpiWalkNamespace. The existing
  1151. interface only has a pre-order callback. This change adds an additional
  1152. parameter for a post-order callback which will be more useful for bus scans.
  1153. ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
  1154.  
  1155. Modified the behavior of the operation region memory mapping cache for
  1156. SystemMemory. Ensure that the memory mappings created for operation regions
  1157. do not cross 4K page boundaries. Crossing a page boundary while mapping
  1158. regions can cause kernel warnings on some hosts if the pages have different
  1159. attributes. Such regions are probably BIOS bugs, and this is the workaround.
  1160. Linux BZ 14445. Lin Ming.
  1161.  
  1162. Implemented an automatic repair for predefined methods that must return
  1163. sorted lists. This change will repair (by sorting) packages returned by _ALR,
  1164. _PSS, and _TSS. Drivers can now assume that the packages are correctly sorted
  1165. and do not contain NULL package elements. Adds one new file,
  1166. namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
  1167.  
  1168. Fixed a possible fault during predefined name validation if a return Package
  1169. object contains NULL elements. Also adds a warning if a NULL element is
  1170. followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may
  1171. include repair or removal of all such NULL elements where possible.
  1172.  
  1173. Implemented additional module-level executable AML code support. This change
  1174. will execute module-level code that is not at the root of the namespace
  1175. (under a Device object, etc.) at table load time. Module-level executable AML
  1176. code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
  1177.  
  1178. Implemented a new internal function to create Integer objects. This function
  1179. simplifies miscellaneous object creation code. ACPICA BZ 823.
  1180.  
  1181. Reduced the severity of predefined repair messages, Warning to Info. Since
  1182. the object was successfully repaired, a warning is too severe. Reduced to an
  1183. info message for now. These messages may eventually be changed to debug-only.
  1184. ACPICA BZ 812.
  1185.  
  1186. Example Code and Data Size: These are the sizes for the OS-independent
  1187. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1188. debug version of the code includes the debug output trace mechanism and has a
  1189. much larger code and data size.
  1190.  
  1191.   Previous Release:
  1192.     Non-Debug Version:  85.8K Code, 18.0K Data, 103.8K Total
  1193.     Debug Version:     161.8K Code, 50.6K Data, 212.4K Total
  1194.   Current Release:
  1195.     Non-Debug Version:  86.6K Code, 18.2K Data, 104.8K Total
  1196.     Debug Version:     162.7K Code, 50.8K Data, 213.5K Total
  1197.  
  1198. 2) iASL Compiler/Disassembler and Tools:
  1199.  
  1200. iASL: Implemented Switch() with While(1) so that Break works correctly. This
  1201. change correctly implements the Switch operator with a surrounding While(1)
  1202. so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
  1203.  
  1204. iASL: Added a message if a package initializer list is shorter than package
  1205. length. Adds a new remark for a Package() declaration if an initializer list
  1206. exists, but is shorter than the declared length of the package. Although
  1207. technically legal, this is probably a coding error and it is seen in the
  1208. field. ACPICA BZ 815. Lin Ming, Bob Moore.
  1209.  
  1210. iASL: Fixed a problem where the compiler could fault after the maximum number
  1211. of errors was reached (200).
  1212.  
  1213. acpixtract: Fixed a possible warning for pointer cast if the compiler warning
  1214. level set very high.
  1215.  
  1216. ----------------------------------------
  1217. 13 October 2009. Summary of changes for version 20091013:
  1218.  
  1219. 1) ACPI CA Core Subsystem:
  1220.  
  1221. Fixed a problem where an Operation Region _REG method could be executed more
  1222. than once. If a custom address space handler is installed by the host before
  1223. the "initialize operation regions" phase of the ACPICA initialization, any
  1224. _REG methods for that address space could be executed twice. This change
  1225. fixes the problem. ACPICA BZ 427. Lin Ming.
  1226.  
  1227. Fixed a possible memory leak for the Scope() ASL operator. When the exact
  1228. invocation of "Scope(\)" is executed (change scope to root), one internal
  1229. operand object was leaked. Lin Ming.
  1230.  
  1231. Implemented a run-time repair for the _MAT predefined method. If the _MAT
  1232. return value is defined as a Field object in the AML, and the field
  1233. size is less than or equal to the default width of an integer (32 or 64),_MAT
  1234. can incorrectly return an Integer instead of a Buffer. ACPICA now
  1235. automatically repairs this problem. ACPICA BZ 810.
  1236.  
  1237. Implemented a run-time repair for the _BIF and _BIX predefined methods. The
  1238. "OEM Information" field is often incorrectly returned as an Integer with
  1239. value zero if the field is not supported by the platform. This is due to an
  1240. ambiguity in the ACPI specification. The field should always be a string.
  1241. ACPICA now automatically repairs this problem by returning a NULL string
  1242. within the returned Package. ACPICA BZ 807.
  1243.  
  1244. Example Code and Data Size: These are the sizes for the OS-independent
  1245. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1246. debug version of the code includes the debug output trace mechanism and has a
  1247. much larger code and data size.
  1248.  
  1249.   Previous Release:
  1250.     Non-Debug Version:  85.6K Code, 18.0K Data, 103.6K Total
  1251.     Debug Version:     161.7K Code, 50.9K Data, 212.6K Total
  1252.   Current Release:
  1253.     Non-Debug Version:  85.8K Code, 18.0K Data, 103.8K Total
  1254.     Debug Version:     161.8K Code, 50.6K Data, 212.4K Total
  1255.  
  1256. 2) iASL Compiler/Disassembler and Tools:
  1257.  
  1258. Disassembler: Fixed a problem where references to external symbols that
  1259. contained one or more parent-prefixes (carats) were not handled correctly,
  1260. possibly causing a fault. ACPICA BZ 806. Lin Ming.
  1261.  
  1262. Disassembler: Restructured the code so that all functions that handle
  1263. external symbols are in a single module. One new file is added,
  1264. common/dmextern.c.
  1265.  
  1266. AML Debugger: Added a max count argument for the Batch command (which
  1267. executes multiple predefined methods within the namespace.)
  1268.  
  1269. iASL: Updated the compiler documentation (User Reference.) Available at
  1270. http://www.acpica.org/documentation/. ACPICA BZ 750.
  1271.  
  1272. AcpiXtract: Updated for Lint and other formatting changes. Close all open
  1273. files.
  1274.  
  1275. ----------------------------------------
  1276. 03 September 2009. Summary of changes for version 20090903:
  1277.  
  1278. 1) ACPI CA Core Subsystem:
  1279.  
  1280. For Windows Vista compatibility, added the automatic execution of an _INI
  1281. method located at the namespace root (\_INI). This method is executed at
  1282. table load time. This support is in addition to the automatic execution of
  1283. \_SB._INI. Lin Ming.
  1284.  
  1285. Fixed a possible memory leak in the interpreter for AML package objects if
  1286. the package initializer list is longer than the defined size of the package.
  1287. This apparently can only happen if the BIOS changes the package size on the
  1288. fly (seen in a _PSS object), as ASL compilers do not allow this. The
  1289. interpreter will truncate the package to the defined size (and issue an error
  1290. message), but previously could leave the extra objects undeleted if they were
  1291. pre-created during the argument processing (such is the case if the package
  1292. consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
  1293.  
  1294. Fixed a problem seen when a Buffer or String is stored to itself via ASL.
  1295. This has been reported in the field. Previously, ACPICA would zero out the
  1296. buffer/string. Now, the operation is treated as a noop. Provides Windows
  1297. compatibility. ACPICA BZ 803. Lin Ming.
  1298.  
  1299. Removed an extraneous error message for ASL constructs of the form
  1300. Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements
  1301. are seen in many BIOSs and are once again treated as NOOPs and no error is
  1302. emitted when they are encountered. ACPICA BZ 785.
  1303.  
  1304. Fixed an extraneous warning message if a _DSM reserved method returns a
  1305. Package object. _DSM can return any type of object, so validation on the
  1306. return type cannot be performed. ACPICA BZ 802.
  1307.  
  1308. Example Code and Data Size: These are the sizes for the OS-independent
  1309. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1310. debug version of the code includes the debug output trace mechanism and has a
  1311. much larger code and data size.
  1312.  
  1313.   Previous Release:
  1314.     Non-Debug Version:  85.5K Code, 18.0K Data, 103.5K Total
  1315.     Debug Version:     161.6K Code, 50.9K Data, 212.5K Total
  1316.   Current Release:
  1317.     Non-Debug Version:  85.6K Code, 18.0K Data, 103.6K Total
  1318.     Debug Version:     161.7K Code, 50.9K Data, 212.6K Total
  1319.  
  1320. 2) iASL Compiler/Disassembler and Tools:
  1321.  
  1322. iASL: Fixed a problem with the use of the Alias operator and Resource
  1323. Templates. The correct alias is now constructed and no error is emitted.
  1324. ACPICA BZ 738.
  1325.  
  1326. iASL: Implemented the -I option to specify additional search directories for
  1327. include files. Allows multiple additional search paths for include files.
  1328. Directories are searched in the order specified on the command line (after
  1329. the local directory is searched.) ACPICA BZ 800.
  1330.  
  1331. iASL: Fixed a problem where the full pathname for include files was not
  1332. emitted for warnings/errors. This caused the IDE support to not work
  1333. properly. ACPICA BZ 765.
  1334.  
  1335. iASL: Implemented the -@ option to specify a Windows-style response file
  1336. containing additional command line options. ACPICA BZ 801.
  1337.  
  1338. AcpiExec: Added support to load multiple AML files simultaneously (such as a
  1339. DSDT and multiple SSDTs). Also added support for wildcards within the AML
  1340. pathname. These features allow all machine tables to be easily loaded and
  1341. debugged together. ACPICA BZ 804.
  1342.  
  1343. Disassembler: Added missing support for disassembly of HEST table Error Bank
  1344. subtables.
  1345.  
  1346. ----------------------------------------
  1347. 30 July 2009. Summary of changes for version 20090730:
  1348.  
  1349. The ACPI 4.0 implementation for ACPICA is complete with this release.
  1350.  
  1351. 1) ACPI CA Core Subsystem:
  1352.  
  1353. ACPI 4.0: Added header file support for all new and changed ACPI tables.
  1354. Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new
  1355. for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT,
  1356. EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There
  1357. have been some ACPI 4.0 changes to other existing tables. Split the large
  1358. actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
  1359.  
  1360. ACPI 4.0: Implemented predefined name validation for all new names. There are
  1361. 31 new names in ACPI 4.0. The predefined validation module was split into two
  1362. files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
  1363.  
  1364. Implemented support for so-called "module-level executable code". This is
  1365. executable AML code that exists outside of any control method and is intended
  1366. to be executed at table load time. Although illegal since ACPI 2.0, this type
  1367. of code still exists and is apparently still being created. Blocks of this
  1368. code are now detected and executed as intended. Currently, the code blocks
  1369. must exist under either an If, Else, or While construct; these are the
  1370. typical cases seen in the field. ACPICA BZ 762. Lin Ming.
  1371.  
  1372. Implemented an automatic dynamic repair for predefined names that return
  1373. nested Package objects. This applies to predefined names that are defined to
  1374. return a variable-length Package of sub-packages. If the number of sub-
  1375. packages is one, BIOS code is occasionally seen that creates a simple single
  1376. package with no sub-packages. This code attempts to fix the problem by
  1377. wrapping a new package object around the existing package. These methods can
  1378. be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ
  1379. 790.
  1380.  
  1381. Fixed a regression introduced in 20090625 for the AcpiGetDevices interface.
  1382. The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA
  1383. BZ 793.
  1384.  
  1385. Fixed a problem with AcpiReset where the reset would silently fail if the
  1386. register was one of the protected I/O ports. AcpiReset now bypasses the port
  1387. validation mechanism. This may eventually be driven into the AcpiRead/Write
  1388. interfaces.
  1389.  
  1390. Fixed a regression related to the recent update of the AcpiRead/Write
  1391. interfaces. A sleep/suspend could fail if the optional PM2 Control register
  1392. does not exist during an attempt to write the Bus Master Arbitration bit.
  1393. (However, some hosts already delete the code that writes this bit, and the
  1394. code may in fact be obsolete at this date.) ACPICA BZ 799.
  1395.  
  1396. Fixed a problem where AcpiTerminate could fault if inadvertently called twice
  1397. in succession. ACPICA BZ 795.
  1398.  
  1399. Example Code and Data Size: These are the sizes for the OS-independent
  1400. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1401. debug version of the code includes the debug output trace mechanism and has a
  1402. much larger code and data size.
  1403.  
  1404.   Previous Release:
  1405.     Non-Debug Version:  84.7K Code, 17.8K Data, 102.5K Total
  1406.     Debug Version:     160.5K Code, 50.6K Data, 211.1K Total
  1407.   Current Release:
  1408.     Non-Debug Version:  85.5K Code, 18.0K Data, 103.5K Total
  1409.     Debug Version:     161.6K Code, 50.9K Data, 212.5K Total
  1410.  
  1411. 2) iASL Compiler/Disassembler and Tools:
  1412.  
  1413. ACPI 4.0: Implemented disassembler support for all new ACPI tables and
  1414. changes to existing tables. ACPICA BZ 775.
  1415.  
  1416. ----------------------------------------
  1417. 25 June 2009. Summary of changes for version 20090625:
  1418.  
  1419. The ACPI 4.0 Specification was released on June 16 and is available at
  1420. www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
  1421. continue for the next few releases.
  1422.  
  1423. 1) ACPI CA Core Subsystem:
  1424.  
  1425. ACPI 4.0: Implemented interpreter support for the IPMI operation region
  1426. address space. Includes support for bi-directional data buffers and an IPMI
  1427. address space handler (to be installed by an IPMI device driver.) ACPICA BZ
  1428. 773. Lin Ming.
  1429.  
  1430. ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes
  1431. support in both the header files and the disassembler.
  1432.  
  1433. Completed a major update for the AcpiGetObjectInfo external interface.
  1434. Changes include:
  1435.  - Support for variable, unlimited length HID, UID, and CID strings.
  1436.  - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.)
  1437.  - Call the _SxW power methods on behalf of a device object.
  1438.  - Determine if a device is a PCI root bridge.
  1439.  - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
  1440. These changes will require an update to all callers of this interface. See
  1441. the updated ACPICA Programmer Reference for details. One new source file has
  1442. been added - utilities/utids.c. ACPICA BZ 368, 780.
  1443.  
  1444. Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
  1445. transfers. The Value parameter has been extended from 32 bits to 64 bits in
  1446. order to support new ACPI 4.0 tables. These changes will require an update to
  1447. all callers of these interfaces. See the ACPICA Programmer Reference for
  1448. details. ACPICA BZ 768.
  1449.  
  1450. Fixed several problems with AcpiAttachData. The handler was not invoked when
  1451. the host node was deleted. The data sub-object was not automatically deleted
  1452. when the host node was deleted. The interface to the handler had an unused
  1453. parameter, this was removed. ACPICA BZ 778.
  1454.  
  1455. Enhanced the function that dumps ACPI table headers. All non-printable
  1456. characters in the string fields are now replaced with '?' (Signature, OemId,
  1457. OemTableId, and CompilerId.) ACPI tables with non-printable characters in
  1458. these fields are occasionally seen in the field. ACPICA BZ 788.
  1459.  
  1460. Fixed a problem with predefined method repair code where the code that
  1461. attempts to repair/convert an object of incorrect type is only executed on
  1462. the first time the predefined method is called. The mechanism that disables
  1463. warnings on subsequent calls was interfering with the repair mechanism.
  1464. ACPICA BZ 781.
  1465.  
  1466. Fixed a possible memory leak in the predefined validation/repair code when a
  1467. buffer is automatically converted to an expected string object.
  1468.  
  1469. Removed obsolete 16-bit files from the distribution and from the current git
  1470. tree head. ACPICA BZ 776.
  1471.  
  1472. Example Code and Data Size: These are the sizes for the OS-independent
  1473. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1474. debug version of the code includes the debug output trace mechanism and has a
  1475. much larger code and data size.
  1476.  
  1477.   Previous Release:
  1478.     Non-Debug Version:  83.4K Code, 17.5K Data, 100.9K Total
  1479.     Debug Version:     158.9K Code, 50.0K Data, 208.9K Total
  1480.   Current Release:
  1481.     Non-Debug Version:  84.7K Code, 17.8K Data, 102.5K Total
  1482.     Debug Version:     160.5K Code, 50.6K Data, 211.1K Total
  1483.  
  1484. 2) iASL Compiler/Disassembler and Tools:
  1485.  
  1486. ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
  1487. operation region keyword. ACPICA BZ 771, 772. Lin Ming.
  1488.  
  1489. ACPI 4.0: iASL - implemented compile-time validation support for all new
  1490. predefined names and control methods (31 total). ACPICA BZ 769.
  1491.  
  1492. ----------------------------------------
  1493. 21 May 2009. Summary of changes for version 20090521:
  1494.  
  1495. 1) ACPI CA Core Subsystem:
  1496.  
  1497. Disabled the preservation of the SCI enable bit in the PM1 control register.
  1498. The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be
  1499. a "preserved" bit - "OSPM always preserves this bit position", section
  1500. 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
  1501. because the bit needs to be explicitly set by the OS as a workaround. No
  1502. machines fail if the bit is not preserved. Therefore, ACPICA no longer
  1503. attempts to preserve this bit.
  1504.  
  1505. Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
  1506. incorrectly formed _PRT package could cause a fault. Added validation to
  1507. ensure that each package element is actually a sub-package.
  1508.  
  1509. Implemented a new interface to install or override a single control method,
  1510. AcpiInstallMethod. This interface is useful when debugging in order to repair
  1511. an existing method or to install a missing method without having to override
  1512. the entire ACPI table. See the ACPICA Programmer Reference for use and
  1513. examples. Lin Ming, Bob Moore.
  1514.  
  1515. Fixed several reference count issues with the DdbHandle object that is
  1516. created from a Load or LoadTable operator. Prevent premature deletion of the
  1517. object. Also, mark the object as invalid once the table has been unloaded.
  1518. This is needed because the handle itself may not be deleted after the table
  1519. unload, depending on whether it has been stored in a named object by the
  1520. caller. Lin Ming.
  1521.  
  1522. Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
  1523. mutexes of the same sync level are acquired but then not released in strict
  1524. opposite order, the internally maintained Current Sync Level becomes confused
  1525. and can cause subsequent execution errors. ACPICA BZ 471.
  1526.  
  1527. Changed the allowable release order for ASL mutex objects. The ACPI 4.0
  1528. specification has been changed to make the SyncLevel for mutex objects more
  1529. useful. When releasing a mutex, the SyncLevel of the mutex must now be the
  1530. same as the current sync level. This makes more sense than the previous rule
  1531. (SyncLevel less than or equal). This change updates the code to match the
  1532. specification.
  1533.  
  1534. Fixed a problem with the local version of the AcpiOsPurgeCache function. The
  1535. (local) cache must be locked during all cache object deletions. Andrew
  1536. Baumann.
  1537.  
  1538. Updated the Load operator to use operation region interfaces. This replaces
  1539. direct memory mapping with region access calls. Now, all region accesses go
  1540. through the installed region handler as they should.
  1541.  
  1542. Simplified and optimized the NsGetNextNode function. Reduced parameter count
  1543. and reduced code for this frequently used function.
  1544.  
  1545. Example Code and Data Size: These are the sizes for the OS-independent
  1546. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1547. debug version of the code includes the debug output trace mechanism and has a
  1548. much larger code and data size.
  1549.  
  1550.   Previous Release:
  1551.     Non-Debug Version:  82.8K Code, 17.5K Data, 100.3K Total
  1552.     Debug Version:     158.0K Code, 49.9K Data, 207.9K Total
  1553.   Current Release:
  1554.     Non-Debug Version:  83.4K Code, 17.5K Data, 100.9K Total
  1555.     Debug Version:     158.9K Code, 50.0K Data, 208.9K Total
  1556.  
  1557. 2) iASL Compiler/Disassembler and Tools:
  1558.  
  1559. Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems
  1560. with sub-table disassembly and handling invalid sub-tables. Attempt recovery
  1561. after an invalid sub-table ID.
  1562.  
  1563. ----------------------------------------
  1564. 22 April 2009. Summary of changes for version 20090422:
  1565.  
  1566. 1) ACPI CA Core Subsystem:
  1567.  
  1568. Fixed a compatibility issue with the recently released I/O port protection
  1569. mechanism. For windows compatibility, 1) On a port protection violation,
  1570. simply ignore the request and do not return an exception (allow the control
  1571. method to continue execution.) 2) If only part of the request overlaps a
  1572. protected port, read/write the individual ports that are not protected. Linux
  1573. BZ 13036. Lin Ming
  1574.  
  1575. Enhanced the execution of the ASL/AML BreakPoint operator so that it actually
  1576. breaks into the AML debugger if the debugger is present. This matches the
  1577. ACPI-defined behavior.
  1578.  
  1579. Fixed several possible warnings related to the use of the configurable
  1580. ACPI_THREAD_ID. This type can now be configured as either an integer or a
  1581. pointer with no warnings. Also fixes several warnings in printf-like
  1582. statements for the 64-bit build when the type is configured as a pointer.
  1583. ACPICA BZ 766, 767.
  1584.  
  1585. Fixed a number of possible warnings when compiling with gcc 4+ (depending on
  1586. warning options.) Examples include printf formats, aliasing, unused globals,
  1587. missing prototypes, missing switch default statements, use of non-ANSI
  1588. library functions, use of non-ANSI constructs. See generate/unix/Makefile for
  1589. a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
  1590.  
  1591. Example Code and Data Size: These are the sizes for the OS-independent
  1592. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1593. debug version of the code includes the debug output trace mechanism and has a
  1594. much larger code and data size.
  1595.  
  1596.   Previous Release:
  1597.     Non-Debug Version:  82.6K Code, 17.6K Data, 100.2K Total
  1598.     Debug Version:     157.7K Code, 49.9K Data, 207.6K Total
  1599.   Current Release:
  1600.     Non-Debug Version:  82.8K Code, 17.5K Data, 100.3K Total
  1601.     Debug Version:     158.0K Code, 49.9K Data, 207.9K Total
  1602.  
  1603. 2) iASL Compiler/Disassembler and Tools:
  1604.  
  1605. iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on
  1606. the 64-bit build.
  1607.  
  1608. iASL: Fixed a problem where the Unix/Linux versions of the compiler could not
  1609. correctly digest Windows/DOS formatted files (with CR/LF).
  1610.  
  1611. iASL: Added a new option for "quiet mode" (-va) that produces only the
  1612. compilation summary, not individual errors and warnings. Useful for large
  1613. batch compilations.
  1614.  
  1615. AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex
  1616. timeout that can be used to detect hang conditions during execution of AML
  1617. code (includes both internal semaphores and AML-defined mutexes and events.)
  1618.  
  1619. Added new makefiles for the generation of acpica in a generic unix-like
  1620. environment. These makefiles are intended to generate the acpica tools and
  1621. utilities from the original acpica git source tree structure.
  1622.  
  1623. Test Suites: Updated and cleaned up the documentation files. Updated the
  1624. copyrights to 2009, affecting all source files. Use the new version of iASL
  1625. with quiet mode. Increased the number of available semaphores in the Windows
  1626. OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added
  1627. an alternate implementation of the semaphore timeout to allow aslts to
  1628. execute fully on Cygwin.
  1629.  
  1630. ----------------------------------------
  1631. 20 March 2009. Summary of changes for version 20090320:
  1632.  
  1633. 1) ACPI CA Core Subsystem:
  1634.  
  1635. Fixed a possible race condition between AcpiWalkNamespace and dynamic table
  1636. unloads. Added a reader/writer locking mechanism to allow multiple concurrent
  1637. namespace walks (readers), but block a dynamic table unload until it can gain
  1638. exclusive write access to the namespace. This fixes a problem where a table
  1639. unload could (possibly catastrophically) delete the portion of the namespace
  1640. that is currently being examined by a walk. Adds a new file, utlock.c, that
  1641. implements the reader/writer lock mechanism. ACPICA BZ 749.
  1642.  
  1643. Fixed a regression introduced in version 20090220 where a change to the FADT
  1644. handling could cause the ACPICA subsystem to access non-existent I/O ports.
  1645.  
  1646. Modified the handling of FADT register and table (FACS/DSDT) addresses. The
  1647. FADT can contain both 32-bit and 64-bit versions of these addresses.
  1648. Previously, the 64-bit versions were favored, meaning that if both 32 and 64
  1649. versions were valid, but not equal, the 64-bit version was used. This was
  1650. found to cause some machines to fail. Now, in this case, the 32-bit version
  1651. is used instead. This now matches the Windows behavior.
  1652.  
  1653. Implemented a new mechanism to protect certain I/O ports. Provides Microsoft
  1654. compatibility and protects the standard PC I/O ports from access via AML
  1655. code. Adds a new file, hwvalid.c
  1656.  
  1657. Fixed a possible extraneous warning message from the FADT support. The
  1658. message warns of a 32/64 length mismatch between the legacy and GAS
  1659. definitions for a register.
  1660.  
  1661. Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is
  1662. made obsolete by the port protection mechanism above. It was previously used
  1663. to validate the entire address range of an operation region, which could be
  1664. incorrect if the range included illegal ports, but fields within the
  1665. operation region did not actually access those ports. Validation is now
  1666. performed on a per-field basis instead of the entire region.
  1667.  
  1668. Modified the handling of the PM1 Status Register ignored bit (bit 11.)
  1669. Ignored bits must be "preserved" according to the ACPI spec. Usually, this
  1670. means a read/modify/write when writing to the register. However, for status
  1671. registers, writing a one means clear the event. Writing a zero means preserve
  1672. the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec,
  1673. and the ACPICA code now simply always writes a zero to the ignored bit.
  1674.  
  1675. Modified the handling of ignored bits for the PM1 A/B Control Registers. As
  1676. per the ACPI specification, for the control registers, preserve
  1677. (read/modify/write) all bits that are defined as either reserved or ignored.
  1678.  
  1679. Updated the handling of write-only bits in the PM1 A/B Control Registers.
  1680. When reading the register, zero the write-only bits as per the ACPI spec.
  1681. ACPICA BZ 443. Lin Ming.
  1682.  
  1683. Removed "Linux" from the list of supported _OSI strings. Linux no longer
  1684. wants to reply true to this request. The Windows strings are the only paths
  1685. through the AML that are tested and known to work properly.
  1686.  
  1687.   Previous Release:
  1688.     Non-Debug Version:  82.0K Code, 17.5K Data,  99.5K Total
  1689.     Debug Version:     156.9K Code, 49.8K Data, 206.7K Total
  1690.   Current Release:
  1691.     Non-Debug Version:  82.6K Code, 17.6K Data, 100.2K Total
  1692.     Debug Version:     157.7K Code, 49.9K Data, 207.6K Total
  1693.  
  1694. 2) iASL Compiler/Disassembler and Tools:
  1695.  
  1696. Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and
  1697. aetables.c
  1698.  
  1699. ----------------------------------------
  1700. 20 February 2009. Summary of changes for version 20090220:
  1701.  
  1702. 1) ACPI CA Core Subsystem:
  1703.  
  1704. Optimized the ACPI register locking. Removed locking for reads from the ACPI
  1705. bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is
  1706. not required when reading the single-bit registers. The
  1707. AcpiGetRegisterUnlocked function is no longer needed and has been removed.
  1708. This will improve performance for reads on these registers. ACPICA BZ 760.
  1709.  
  1710. Fixed the parameter validation for AcpiRead/Write. Now return
  1711. AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if
  1712. the register has an address of zero. Previously, these cases simply returned
  1713. AE_OK. For optional registers such as PM1B status/enable/control, the caller
  1714. should check for a valid register address before calling. ACPICA BZ 748.
  1715.  
  1716. Renamed the external ACPI bit register access functions. Renamed
  1717. AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
  1718. functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister.
  1719. Also, restructured the code for these functions by simplifying the code path
  1720. and condensing duplicate code to reduce code size.
  1721.  
  1722. Added new functions to transparently handle the possibly split PM1 A/B
  1723. registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions
  1724. now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ
  1725. 746.
  1726.  
  1727. Added a function to handle the PM1 control registers, AcpiHwWritePm1Control.
  1728. This function writes both of the PM1 control registers (A/B). These registers
  1729. are different than the PM1 A/B status and enable registers in that different
  1730. values can be written to the A/B registers. Most notably, the SLP_TYP bits
  1731. can be different, as per the values returned from the _Sx predefined methods.
  1732.  
  1733. Removed an extra register write within AcpiHwClearAcpiStatus. This function
  1734. was writing an optional PM1B status register twice. The existing call to the
  1735. low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B
  1736. register. ACPICA BZ 751.
  1737.  
  1738. Split out the PM1 Status registers from the FADT. Added new globals for these
  1739. registers (A/B), similar to the way the PM1 Enable registers are handled.
  1740. Instead of overloading the FADT Event Register blocks. This makes the code
  1741. clearer and less prone to error.
  1742.  
  1743. Fixed the warning message for when the platform contains too many ACPI tables
  1744. for the default size of the global root table data structure. The calculation
  1745. for the truncation value was incorrect.
  1746.  
  1747. Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
  1748. obsolete macro, since it is now a simple reference to ->common.type. There
  1749. were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
  1750.  
  1751. Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
  1752. TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
  1753. simply SLEEP_TYPE. ACPICA BZ 754.
  1754.  
  1755. Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
  1756. function is only needed on 64-bit host operating systems and is thus not
  1757. included for 32-bit hosts.
  1758.  
  1759. Debug output: print the input and result for invocations of the _OSI reserved
  1760. control method via the ACPI_LV_INFO debug level. Also, reduced some of the
  1761. verbosity of this debug level. Len Brown.
  1762.  
  1763. Example Code and Data Size: These are the sizes for the OS-independent
  1764. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1765. debug version of the code includes the debug output trace mechanism and has a
  1766. much larger code and data size.
  1767.  
  1768.   Previous Release:
  1769.     Non-Debug Version:  82.3K Code, 17.5K Data,  99.8K Total
  1770.     Debug Version:     157.3K Code, 49.8K Data, 207.1K Total
  1771.   Current Release:
  1772.     Non-Debug Version:  82.0K Code, 17.5K Data,  99.5K Total
  1773.     Debug Version:     156.9K Code, 49.8K Data, 206.7K Total
  1774.  
  1775. 2) iASL Compiler/Disassembler and Tools:
  1776.  
  1777. Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
  1778. various legal performance profiles.
  1779.  
  1780. ----------------------------------------
  1781. 23 January 2009. Summary of changes for version 20090123:
  1782.  
  1783. 1) ACPI CA Core Subsystem:
  1784.  
  1785. Added the 2009 copyright to all module headers and signons. This affects
  1786. virtually every file in the ACPICA core subsystem, the iASL compiler, and
  1787. the tools/utilities.
  1788.  
  1789. Implemented a change to allow the host to override any ACPI table, including
  1790. dynamically loaded tables. Previously, only the DSDT could be replaced by the
  1791. host. With this change, the AcpiOsTableOverride interface is called for each
  1792. table found in the RSDT/XSDT during ACPICA initialization, and also whenever
  1793. a table is dynamically loaded via the AML Load operator.
  1794.  
  1795. Updated FADT flag definitions, especially the Boot Architecture flags.
  1796.  
  1797. Debugger: For the Find command, automatically pad the input ACPI name with
  1798. underscores if the name is shorter than 4 characters. This enables a match
  1799. with the actual namespace entry which is itself padded with underscores.
  1800.  
  1801. Example Code and Data Size: These are the sizes for the OS-independent
  1802. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1803. debug version of the code includes the debug output trace mechanism and has a
  1804. much larger code and data size.
  1805.  
  1806.   Previous Release:
  1807.     Non-Debug Version:  82.3K Code, 17.4K Data,  99.7K Total
  1808.     Debug Version:     157.1K Code, 49.7K Data, 206.8K Total
  1809.   Current Release:
  1810.     Non-Debug Version:  82.3K Code, 17.5K Data,  99.8K Total
  1811.     Debug Version:     157.3K Code, 49.8K Data, 207.1K Total
  1812.  
  1813. 2) iASL Compiler/Disassembler and Tools:
  1814.  
  1815. Fix build error under Bison-2.4.
  1816.  
  1817. Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture
  1818. flags. Now decode all flags, regardless of the FADT version. Flag output
  1819. includes the FADT version which first defined each flag.
  1820.  
  1821. The iASL -g option now dumps the RSDT to a file (in addition to the FADT and
  1822. DSDT). Windows only.
  1823.  
  1824. ----------------------------------------
  1825. 04 December 2008. Summary of changes for version 20081204:
  1826.  
  1827. 1) ACPI CA Core Subsystem:
  1828.  
  1829. The ACPICA Programmer Reference has been completely updated and revamped for
  1830. this release. This includes updates to the external interfaces, OSL
  1831. interfaces, the overview sections, and the debugger reference.
  1832.  
  1833. Several new ACPICA interfaces have been implemented and documented in the
  1834. programmer reference:
  1835. AcpiReset - Writes the reset value to the FADT-defined reset register.
  1836. AcpiDisableAllGpes - Disable all available GPEs.
  1837. AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
  1838. AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
  1839. AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
  1840. AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
  1841. AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
  1842.  
  1843. Most of the public ACPI hardware-related interfaces have been moved to a new
  1844. file, components/hardware/hwxface.c
  1845.  
  1846. Enhanced the FADT parsing and low-level ACPI register access: The ACPI
  1847. register lengths within the FADT are now used, and the low level ACPI
  1848. register access no longer hardcodes the ACPI register lengths. Given that
  1849. there may be some risk in actually trusting the FADT register lengths, a run-
  1850. time option was added to fall back to the default hardcoded lengths if the
  1851. FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
  1852. option is set to true for now, and a warning is issued if a suspicious FADT
  1853. register length is overridden with the default value.
  1854.  
  1855. Fixed a reference count issue in NsRepairObject. This problem was introduced
  1856. in version 20081031 as part of a fix to repair Buffer objects within
  1857. Packages. Lin Ming.
  1858.  
  1859. Added semaphore support to the Linux/Unix application OS-services layer
  1860. (OSL). ACPICA BZ 448. Lin Ming.
  1861.  
  1862. Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will
  1863. be implemented in the OSL, or will binary semaphores be used instead.
  1864.  
  1865. Example Code and Data Size: These are the sizes for the OS-independent
  1866. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1867. debug version of the code includes the debug output trace mechanism and has a
  1868. much larger code and data size.
  1869.  
  1870.   Previous Release:
  1871.     Non-Debug Version:  81.7K Code, 17.3K Data,  99.0K Total
  1872.     Debug Version:     156.4K Code, 49.4K Data, 205.8K Total
  1873.   Current Release:
  1874.     Non-Debug Version:  82.3K Code, 17.4K Data,  99.7K Total
  1875.     Debug Version:     157.1K Code, 49.7K Data, 206.8K Total
  1876.  
  1877. 2) iASL Compiler/Disassembler and Tools:
  1878.  
  1879. iASL: Completed the '-e' option to include additional ACPI tables in order to
  1880. aid with disassembly and External statement generation. ACPICA BZ 742. Lin
  1881. Ming.
  1882.  
  1883. iASL: Removed the "named object in while loop" error. The compiler cannot
  1884. determine how many times a loop will execute. ACPICA BZ 730.
  1885.  
  1886. Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA
  1887. BZ 743.
  1888.  
  1889. Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG).
  1890.  
  1891. ----------------------------------------
  1892. 31 October 2008. Summary of changes for version 20081031:
  1893.  
  1894. 1) ACPI CA Core Subsystem:
  1895.  
  1896. Restructured the ACPICA header files into public/private. acpi.h now includes
  1897. only the "public" acpica headers. All other acpica headers are "private" and
  1898. should not be included by acpica users. One new file, accommon.h is used to
  1899. include the commonly used private headers for acpica code generation. Future
  1900. plans include moving all private headers to a new subdirectory.
  1901.  
  1902. Implemented an automatic Buffer->String return value conversion for
  1903. predefined ACPI methods. For these methods (such as _BIF), added automatic
  1904. conversion for return objects that are required to be a String, but a Buffer
  1905. was found instead. This can happen when reading string battery data from an
  1906. operation region, because it used to be difficult to convert the data from
  1907. buffer to string from within the ASL. Ensures that the host OS is provided
  1908. with a valid null-terminated string. Linux BZ 11822.
  1909.  
  1910. Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector
  1911. into two: one for the 32-bit vector, another for the 64-bit vector. This is
  1912. required because the host OS must setup the wake much differently for each
  1913. vector (real vs. protected mode, etc.) and the interface itself should not be
  1914. deciding which vector to use. Also, eliminated the GetFirmwareWakingVector
  1915. interface, as it served no purpose (only the firmware reads the vector, OS
  1916. only writes the vector.) ACPICA BZ 731.
  1917.  
  1918. Implemented a mechanism to escape infinite AML While() loops. Added a loop
  1919. counter to force exit from AML While loops if the count becomes too large.
  1920. This can occur in poorly written AML when the hardware does not respond
  1921. within a while loop and the loop does not implement a timeout. The maximum
  1922. loop count is configurable. A new exception code is returned when a loop is
  1923. broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
  1924.  
  1925. Optimized the execution of AML While loops. Previously, a control state
  1926. object was allocated and freed for each execution of the loop. The
  1927. optimization is to simply reuse the control state for each iteration. This
  1928. speeds up the raw loop execution time by about 5%.
  1929.  
  1930. Enhanced the implicit return mechanism. For Windows compatibility, return an
  1931. implicit integer of value zero for methods that contain no executable code.
  1932. Such methods are seen in the field as stubs (presumably), and can cause
  1933. drivers to fail if they expect a return value. Lin Ming.
  1934.  
  1935. Allow multiple backslashes as root prefixes in namepaths. In a fully
  1936. qualified namepath, allow multiple backslash prefixes. This can happen (and
  1937. is seen in the field) because of the use of a double-backslash in strings
  1938. (since backslash is the escape character) causing confusion. ACPICA BZ 739
  1939. Lin Ming.
  1940.  
  1941. Emit a warning if two different FACS or DSDT tables are discovered in the
  1942. FADT. Checks if there are two valid but different addresses for the FACS and
  1943. DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
  1944.  
  1945. Consolidated the method argument count validation code. Merged the code that
  1946. validates control method argument counts into the predefined validation
  1947. module. Eliminates possible multiple warnings for incorrect argument counts.
  1948.  
  1949. Implemented ACPICA example code. Includes code for ACPICA initialization,
  1950. handler installation, and calling a control method. Available at
  1951. source/tools/examples.
  1952.  
  1953. Added a global pointer for FACS table to simplify internal FACS access. Use
  1954. the global pointer instead of using AcpiGetTableByIndex for each FACS access.
  1955. This simplifies the code for the Global Lock and the Firmware Waking
  1956. Vector(s).
  1957.  
  1958. Example Code and Data Size: These are the sizes for the OS-independent
  1959. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  1960. debug version of the code includes the debug output trace mechanism and has a
  1961. much larger code and data size.
  1962.  
  1963.   Previous Release:
  1964.     Non-Debug Version:  81.2K Code, 17.0K Data,  98.2K Total
  1965.     Debug Version:     155.8K Code, 49.1K Data, 204.9K Total
  1966.   Current Release:
  1967.     Non-Debug Version:  81.7K Code, 17.3K Data,  99.0K Total
  1968.     Debug Version:     156.4K Code, 49.4K Data, 205.8K Total
  1969.  
  1970. 2) iASL Compiler/Disassembler and Tools:
  1971.  
  1972. iASL: Improved disassembly of external method calls. Added the -e option to
  1973. allow the inclusion of additional ACPI tables to help with the disassembly of
  1974. method invocations and the generation of external declarations during the
  1975. disassembly. Certain external method invocations cannot be disassembled
  1976. properly without the actual declaration of the method. Use the -e option to
  1977. include the table where the external method(s) are actually declared. Most
  1978. useful for disassembling SSDTs that make method calls back to the master
  1979. DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT:  iasl -d
  1980. -e dsdt.aml ssdt1.aml
  1981.  
  1982. iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
  1983. problem where the use of an alias within a namepath would result in a not
  1984. found error or cause the compiler to fault. Also now allows forward
  1985. references from the Alias operator itself. ACPICA BZ 738.
  1986.  
  1987. ----------------------------------------
  1988. 26 September 2008. Summary of changes for version 20080926:
  1989.  
  1990. 1) ACPI CA Core Subsystem:
  1991.  
  1992. Designed and implemented a mechanism to validate predefined ACPI methods and
  1993. objects. This code validates the predefined ACPI objects (objects whose names
  1994. start with underscore) that appear in the namespace, at the time they are
  1995. evaluated. The argument count and the type of the returned object are
  1996. validated against the ACPI specification. The purpose of this validation is
  1997. to detect problems with the BIOS-implemented predefined ACPI objects before
  1998. the results are returned to the ACPI-related drivers. Future enhancements may
  1999. include actual repair of incorrect return objects where possible. Two new
  2000. files are nspredef.c and acpredef.h.
  2001.  
  2002. Fixed a fault in the AML parser if a memory allocation fails during the Op
  2003. completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
  2004.  
  2005. Fixed an issue with implicit return compatibility. This change improves the
  2006. implicit return mechanism to be more compatible with the MS interpreter. Lin
  2007. Ming, ACPICA BZ 349.
  2008.  
  2009. Implemented support for zero-length buffer-to-string conversions. Allow zero
  2010. length strings during interpreter buffer-to-string conversions. For example,
  2011. during the ToDecimalString and ToHexString operators, as well as implicit
  2012. conversions. Fiodor Suietov, ACPICA BZ 585.
  2013.  
  2014. Fixed two possible memory leaks in the error exit paths of
  2015. AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are
  2016. similar in that they use a stack of state objects in order to eliminate
  2017. recursion. The stack must be fully unwound and deallocated if an error
  2018. occurs. Lin Ming. ACPICA BZ 383.
  2019.  
  2020. Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global
  2021. ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
  2022. Moore ACPICA BZ 442.
  2023.  
  2024. Removed the obsolete version number in module headers. Removed the
  2025. "$Revision" number that appeared in each module header. This version number
  2026. was useful under SourceSafe and CVS, but has no meaning under git. It is not
  2027. only incorrect, it could also be misleading.
  2028.  
  2029. Example Code and Data Size: These are the sizes for the OS-independent
  2030. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2031. debug version of the code includes the debug output trace mechanism and has a
  2032. much larger code and data size.
  2033.  
  2034.   Previous Release:
  2035.     Non-Debug Version:  79.7K Code, 16.4K Data,  96.1K Total
  2036.     Debug Version:     153.7K Code, 48.2K Data, 201.9K Total
  2037.   Current Release:
  2038.     Non-Debug Version:  81.2K Code, 17.0K Data,  98.2K Total
  2039.     Debug Version:     155.8K Code, 49.1K Data, 204.9K Total
  2040.  
  2041. ----------------------------------------
  2042. 29 August 2008. Summary of changes for version 20080829:
  2043.  
  2044. 1) ACPI CA Core Subsystem:
  2045.  
  2046. Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
  2047. Reference. Changes include the elimination of cheating on the Object field
  2048. for the DdbHandle subtype, addition of a reference class field to
  2049. differentiate the various reference types (instead of an AML opcode), and the
  2050. cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
  2051.  
  2052. Reduce an error to a warning for an incorrect method argument count.
  2053. Previously aborted with an error if too few arguments were passed to a
  2054. control method via the external ACPICA interface. Now issue a warning instead
  2055. and continue. Handles the case where the method inadvertently declares too
  2056. many arguments, but does not actually use the extra ones. Applies mainly to
  2057. the predefined methods. Lin Ming. Linux BZ 11032.
  2058.  
  2059. Disallow the evaluation of named object types with no intrinsic value. Return
  2060. AE_TYPE for objects that have no value and therefore evaluation is undefined:
  2061. Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of
  2062. these types were allowed, but an exception would be generated at some point
  2063. during the evaluation. Now, the error is generated up front.
  2064.  
  2065. Fixed a possible memory leak in the AcpiNsGetExternalPathname function
  2066. (nsnames.c). Fixes a leak in the error exit path.
  2067.  
  2068. Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug
  2069. levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION
  2070. interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
  2071. ACPI_LV_EVENTS.
  2072.  
  2073. Removed obsolete and/or unused exception codes from the acexcep.h header.
  2074. There is the possibility that certain device drivers may be affected if they
  2075. use any of these exceptions.
  2076.  
  2077. The ACPICA documentation has been added to the public git source tree, under
  2078. acpica/documents. Included are the ACPICA programmer reference, the iASL
  2079. compiler reference, and the changes.txt release logfile.
  2080.  
  2081. Example Code and Data Size: These are the sizes for the OS-independent
  2082. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2083. debug version of the code includes the debug output trace mechanism and has a
  2084. much larger code and data size.
  2085.  
  2086.   Previous Release:
  2087.     Non-Debug Version:  79.7K Code, 16.4K Data,  96.1K Total
  2088.     Debug Version:     153.9K Code, 48.4K Data, 202.3K Total
  2089.   Current Release:
  2090.     Non-Debug Version:  79.7K Code, 16.4K Data,  96.1K Total
  2091.     Debug Version:     153.7K Code, 48.2K Data, 201.9K Total
  2092.  
  2093. 2) iASL Compiler/Disassembler and Tools:
  2094.  
  2095. Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
  2096. defines _SCP with 3 arguments. Previous versions defined it with only 1
  2097. argument. iASL now allows both definitions.
  2098.  
  2099. iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero-
  2100. length subtables when disassembling ACPI tables. Also fixed a couple of
  2101. errors where a full 16-bit table type field was not extracted from the input
  2102. properly.
  2103.  
  2104. acpisrc: Improve comment counting mechanism for generating source code
  2105. statistics. Count first and last lines of multi-line comments as whitespace,
  2106. not comment lines. Handle Linux legal header in addition to standard acpica
  2107. header.
  2108.  
  2109. ----------------------------------------
  2110.  
  2111. 29 July 2008. Summary of changes for version 20080729:
  2112.  
  2113. 1) ACPI CA Core Subsystem:
  2114.  
  2115. Fix a possible deadlock in the GPE dispatch. Remove call to
  2116. AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt
  2117. to acquire the GPE lock but can deadlock since the GPE lock is already held
  2118. at dispatch time. This code was introduced in version 20060831 as a response
  2119. to Linux BZ 6881 and has since been removed from Linux.
  2120.  
  2121. Add a function to dereference returned reference objects. Examines the return
  2122. object from a call to AcpiEvaluateObject. Any Index or RefOf references are
  2123. automatically dereferenced in an attempt to return something useful (these
  2124. reference types cannot be converted into an external ACPI_OBJECT.) Provides
  2125. MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
  2126.  
  2127. x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
  2128. subtables for the MADT and one new subtable for the SRAT. Includes
  2129. disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC
  2130. Specification, June 2008.
  2131.  
  2132. Additional error checking for pathname utilities. Add error check after all
  2133. calls to AcpiNsGetPathnameLength. Add status return from
  2134. AcpiNsBuildExternalPath and check after all calls. Add parameter validation
  2135. to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
  2136.  
  2137. Return status from the global init function AcpiUtGlobalInitialize. This is
  2138. used by both the kernel subsystem and the utilities such as iASL compiler.
  2139. The function could possibly fail when the caches are initialized. Yang Yi.
  2140.  
  2141. Add a function to decode reference object types to strings. Created for
  2142. improved error messages.
  2143.  
  2144. Improve object conversion error messages. Better error messages during object
  2145. conversion from internal to the external ACPI_OBJECT. Used for external calls
  2146. to AcpiEvaluateObject.
  2147.  
  2148. Example Code and Data Size: These are the sizes for the OS-independent
  2149. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2150. debug version of the code includes the debug output trace mechanism and has a
  2151. much larger code and data size.
  2152.  
  2153.   Previous Release:
  2154.     Non-Debug Version:  79.6K Code, 16.2K Data,  95.8K Total
  2155.     Debug Version:     153.5K Code, 48.2K Data, 201.7K Total
  2156.   Current Release:
  2157.     Non-Debug Version:  79.7K Code, 16.4K Data,  96.1K Total
  2158.     Debug Version:     153.9K Code, 48.4K Data, 202.3K Total
  2159.  
  2160. 2) iASL Compiler/Disassembler and Tools:
  2161.  
  2162. Debugger: fix a possible hang when evaluating non-methods. Fixes a problem
  2163. introduced in version 20080701. If the object being evaluated (via execute
  2164. command) is not a method, the debugger can hang while trying to obtain non-
  2165. existent parameters.
  2166.  
  2167. iASL: relax error for using reserved "_T_x" identifiers. These names can
  2168. appear in a disassembled ASL file if they were emitted by the original
  2169. compiler. Instead of issuing an error or warning and forcing the user to
  2170. manually change these names, issue a remark instead.
  2171.  
  2172. iASL: error if named object created in while loop. Emit an error if any named
  2173. object is created within a While loop. If allowed, this code will generate a
  2174. run-time error on the second iteration of the loop when an attempt is made to
  2175. create the same named object twice. ACPICA bugzilla 730.
  2176.  
  2177. iASL: Support absolute pathnames for include files. Add support for absolute
  2178. pathnames within the Include operator. previously, only relative pathnames
  2179. were supported.
  2180.  
  2181. iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor.
  2182. The ACPI spec requires one interrupt minimum. BZ 423
  2183.  
  2184. iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
  2185. Handles the case for the Interrupt Resource Descriptor where
  2186. the ResourceSource argument is omitted but ResourceSourceIndex
  2187. is present. Now leave room for the Index. BZ 426
  2188.  
  2189. iASL: Prevent error message if CondRefOf target does not exist. Fixes cases
  2190. where an error message is emitted if the target does not exist. BZ 516
  2191.  
  2192. iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
  2193. (get ACPI tables on Windows). This was apparently broken in version 20070919.
  2194.  
  2195. AcpiXtract: Handle EOF while extracting data. Correctly handle the case where
  2196. the EOF happens immediately after the last table in the input file. Print
  2197. completion message. Previously, no message was displayed in this case.
  2198.  
  2199. ----------------------------------------
  2200. 01 July 2008. Summary of changes for version 20080701:
  2201.  
  2202. 0) Git source tree / acpica.org
  2203.  
  2204. Fixed a problem where a git-clone from http would not transfer the entire
  2205. source tree.
  2206.  
  2207. 1) ACPI CA Core Subsystem:
  2208.  
  2209. Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
  2210. enable bit. Now performs a read-change-write of the enable register instead
  2211. of simply writing out the cached enable mask. This will prevent inadvertent
  2212. enabling of GPEs if a rogue GPE is received during initialization (before GPE
  2213. handlers are installed.)
  2214.  
  2215. Implemented a copy for dynamically loaded tables. Previously, dynamically
  2216. loaded tables were simply mapped - but on some machines this memory is
  2217. corrupted after suspend. Now copy the table to a local buffer. For the
  2218. OpRegion case, added checksum verify. Use the table length from the table
  2219. header, not the region length. For the Buffer case, use the table length
  2220. also. Dennis Noordsij, Bob Moore. BZ 10734
  2221.  
  2222. Fixed a problem where the same ACPI table could not be dynamically loaded and
  2223. unloaded more than once. Without this change, a table cannot be loaded again
  2224. once it has been loaded/unloaded one time. The current mechanism does not
  2225. unregister a table upon an unload. During a load, if the same table is found,
  2226. this no longer returns an exception. BZ 722
  2227.  
  2228. Fixed a problem where the wrong descriptor length was calculated for the
  2229. EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag
  2230. are calculated as 12 bytes long, but the actual length in the internal
  2231. descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported
  2232. by Linn Crosetto. BZ 728
  2233.  
  2234. Fixed a possible memory leak in the Unload operator. The DdbHandle returned
  2235. by Load() did not have its reference count decremented during unload, leading
  2236. to a memory leak. Lin Ming. BZ 727
  2237.  
  2238. Fixed a possible memory leak when deleting thermal/processor objects. Any
  2239. associated notify handlers (and objects) were not being deleted. Fiodor
  2240. Suietov. BZ 506
  2241.  
  2242. Fixed the ordering of the ASCII names in the global mutex table to match the
  2243. actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only.
  2244. Vegard Nossum. BZ 726
  2245.  
  2246. Enhanced the AcpiGetObjectInfo interface to return the number of required
  2247. arguments if the object is a control method. Added this call to the debugger
  2248. so the proper number of default arguments are passed to a method. This
  2249. prevents a warning when executing methods from AcpiExec.
  2250.  
  2251. Added a check for an invalid handle in AcpiGetObjectInfo. Return
  2252. AE_BAD_PARAMETER if input handle is invalid. BZ 474
  2253.  
  2254. Fixed an extraneous warning from exconfig.c on the 64-bit build.
  2255.  
  2256. Example Code and Data Size: These are the sizes for the OS-independent
  2257. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2258. debug version of the code includes the debug output trace mechanism and has a
  2259. much larger code and data size.
  2260.  
  2261.   Previous Release:
  2262.     Non-Debug Version:  79.3K Code, 16.2K Data,  95.5K Total
  2263.     Debug Version:     153.0K Code, 48.2K Data, 201.2K Total
  2264.   Current Release:
  2265.     Non-Debug Version:  79.6K Code, 16.2K Data,  95.8K Total
  2266.     Debug Version:     153.5K Code, 48.2K Data, 201.7K Total
  2267.  
  2268. 2) iASL Compiler/Disassembler and Tools:
  2269.  
  2270. iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
  2271. resource descriptor names.
  2272.  
  2273. iASL: Detect invalid ASCII characters in input (windows version). Removed the
  2274. "-CF" flag from the flex compile, enables correct detection of non-ASCII
  2275. characters in the input. BZ 441
  2276.  
  2277. iASL: Eliminate warning when result of LoadTable is not used. Eliminate the
  2278. "result of operation not used" warning when the DDB handle returned from
  2279. LoadTable is not used. The warning is not needed. BZ 590
  2280.  
  2281. AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to
  2282. pass address of table to the AML. Added option to disable OpRegion simulation
  2283. to allow creation of an OpRegion with a real address that was passed to _CFG.
  2284. All of this allows testing of the Load and Unload operators from AcpiExec.
  2285.  
  2286. Debugger: update tables command for unloaded tables. Handle unloaded tables
  2287. and use the standard table header output routine.
  2288.  
  2289. ----------------------------------------
  2290. 09 June 2008. Summary of changes for version 20080609:
  2291.  
  2292. 1) ACPI CA Core Subsystem:
  2293.  
  2294. Implemented a workaround for reversed _PRT entries. A significant number of
  2295. BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
  2296. change dynamically detects and repairs this problem. Provides compatibility
  2297. with MS ACPI. BZ 6859
  2298.  
  2299. Simplified the internal ACPI hardware interfaces to eliminate the locking
  2300. flag parameter from Register Read/Write. Added a new external interface,
  2301. AcpiGetRegisterUnlocked.
  2302.  
  2303. Fixed a problem where the invocation of a GPE control method could hang. This
  2304. was a regression introduced in 20080514. The new method argument count
  2305. validation mechanism can enter an infinite loop when a GPE method is
  2306. dispatched. Problem fixed by removing the obsolete code that passed GPE block
  2307. information to the notify handler via the control method parameter pointer.
  2308.  
  2309. Fixed a problem where the _SST execution status was incorrectly returned to
  2310. the caller of AcpiEnterSleepStatePrep. This was a regression introduced in
  2311. 20080514. _SST is optional and a NOT_FOUND exception should never be
  2312. returned. BZ 716
  2313.  
  2314. Fixed a problem where a deleted object could be accessed from within the AML
  2315. parser. This was a regression introduced in version 20080123 as a fix for the
  2316. Unload operator. Lin Ming. BZ 10669
  2317.  
  2318. Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands
  2319. and eliminated the use of a negative index in a loop. Operands are now
  2320. displayed in the correct order, not backwards. This also fixes a regression
  2321. introduced in 20080514 on 64-bit systems where the elimination of
  2322. ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715
  2323.  
  2324. Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit
  2325. path did not delete a locally allocated structure.
  2326.  
  2327. Updated definitions for the DMAR and SRAT tables to synchronize with the
  2328. current specifications. Includes disassembler support.
  2329.  
  2330. Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
  2331. loop termination value was used. Loop terminated on iteration early, missing
  2332. one mutex. Linn Crosetto
  2333.  
  2334. Example Code and Data Size: These are the sizes for the OS-independent
  2335. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2336. debug version of the code includes the debug output trace mechanism and has a
  2337. much larger code and data size.
  2338.  
  2339.   Previous Release:
  2340.     Non-Debug Version:  79.5K Code, 16.2K Data,  95.7K Total
  2341.     Debug Version:     153.3K Code, 48.3K Data, 201.6K Total
  2342.   Current Release:
  2343.     Non-Debug Version:  79.3K Code, 16.2K Data,  95.5K Total
  2344.     Debug Version:     153.0K Code, 48.2K Data, 201.2K Total
  2345.  
  2346. 2) iASL Compiler/Disassembler and Tools:
  2347.  
  2348. Disassembler: Implemented support for EisaId() within _CID objects. Now
  2349. disassemble integer _CID objects back to EisaId invocations, including
  2350. multiple integers within _CID packages. Includes single-step support for
  2351. debugger also.
  2352.  
  2353. Disassembler: Added support for DMAR and SRAT table definition changes.
  2354.  
  2355. ----------------------------------------
  2356. 14 May 2008. Summary of changes for version 20080514:
  2357.  
  2358. 1) ACPI CA Core Subsystem:
  2359.  
  2360. Fixed a problem where GPEs were enabled too early during the ACPICA
  2361. initialization. This could lead to "handler not installed" errors on some
  2362. machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This
  2363. ensures that all operation regions and devices throughout the namespace have
  2364. been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
  2365.  
  2366. Implemented a change to the enter sleep code. Moved execution of the _GTS
  2367. method to just before setting sleep enable bit. The execution was moved from
  2368. AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
  2369. immediately before the SLP_EN bit is set, as per the ACPI specification.
  2370. Luming Yu, BZ 1653.
  2371.  
  2372. Implemented a fix to disable unknown GPEs (2nd version). Now always disable
  2373. the GPE, even if ACPICA thinks that that it is already disabled. It is
  2374. possible that the AML or some other code has enabled the GPE unbeknownst to
  2375. the ACPICA code.
  2376.  
  2377. Fixed a problem with the Field operator where zero-length fields would return
  2378. an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL
  2379. field declarations in Field(), BankField(), and IndexField(). BZ 10606.
  2380.  
  2381. Implemented a fix for the Load operator, now load the table at the namespace
  2382. root. This reverts a change introduced in version 20071019. The table is now
  2383. loaded at the namespace root even though this goes against the ACPI
  2384. specification. This provides compatibility with other ACPI implementations.
  2385. The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming.
  2386.  
  2387. Fixed a problem where ACPICA would not Load() tables with unusual signatures.
  2388. Now ignore ACPI table signature for Load() operator. Only "SSDT" is
  2389. acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
  2390. Therefore, signature validation is worthless. Apparently MS ACPI accepts such
  2391. signatures, ACPICA must be compatible. BZ 10454.
  2392.  
  2393. Fixed a possible negative array index in AcpiUtValidateException. Added NULL
  2394. fields to the exception string arrays to eliminate a -1 subtraction on the
  2395. SubStatus field.
  2396.  
  2397. Updated the debug tracking macros to reduce overall code and data size.
  2398. Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
  2399. instead of pointers to static strings. Jan Beulich and Bob Moore.
  2400.  
  2401. Implemented argument count checking in control method invocation via
  2402. AcpiEvaluateObject. Now emit an error if too few arguments, warning if too
  2403. many. This applies only to extern programmatic control method execution, not
  2404. method-to-method calls within the AML. Lin Ming.
  2405.  
  2406. Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no
  2407. longer needed, especially with the removal of 16-bit support. It was replaced
  2408. mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on
  2409. 32/64-bit platforms is required.
  2410.  
  2411. Added the C const qualifier for appropriate string constants -- mostly
  2412. MODULE_NAME and printf format strings. Jan Beulich.
  2413.  
  2414. Example Code and Data Size: These are the sizes for the OS-independent
  2415. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2416. debug version of the code includes the debug output trace mechanism and has a
  2417. much larger code and data size.
  2418.  
  2419.   Previous Release:
  2420.     Non-Debug Version:  80.0K Code, 17.4K Data,  97.4K Total
  2421.     Debug Version:     159.4K Code, 64.4K Data, 223.8K Total
  2422.   Current Release:
  2423.     Non-Debug Version:  79.5K Code, 16.2K Data,  95.7K Total
  2424.     Debug Version:     153.3K Code, 48.3K Data, 201.6K Total
  2425.  
  2426. 2) iASL Compiler/Disassembler and Tools:
  2427.  
  2428. Implemented ACPI table revision ID validation in the disassembler. Zero is
  2429. always invalid. For DSDTs, the ID controls the interpreter integer width. 1
  2430. means 32-bit and this is unusual. 2 or greater is 64-bit.
  2431.  
  2432. ----------------------------------------
  2433. 21 March 2008. Summary of changes for version 20080321:
  2434.  
  2435. 1) ACPI CA Core Subsystem:
  2436.  
  2437. Implemented an additional change to the GPE support in order to suppress
  2438. spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently
  2439. disable incoming GPEs that are neither enabled nor disabled -- meaning that
  2440. the GPE is unknown to the system. This should prevent future interrupt floods
  2441. from that GPE. BZ 6217 (Zhang Rui)
  2442.  
  2443. Fixed a problem where NULL package elements were not returned to the
  2444. AcpiEvaluateObject interface correctly. The element was simply ignored
  2445. instead of returning a NULL ACPI_OBJECT package element, potentially causing
  2446. a buffer overflow and/or confusing the caller who expected a fixed number of
  2447. elements. BZ 10132 (Lin Ming, Bob Moore)
  2448.  
  2449. Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword,
  2450. Qword), Field, BankField, and IndexField operators when invoked from inside
  2451. an executing control method. In this case, these operators created namespace
  2452. nodes that were incorrectly left marked as permanent nodes instead of
  2453. temporary nodes. This could cause a problem if there is race condition
  2454. between an exiting control method and a running namespace walk. (Reported by
  2455. Linn Crosetto)
  2456.  
  2457. Fixed a problem where the CreateField and CreateXXXField operators would
  2458. incorrectly allow duplicate names (the name of the field) with no exception
  2459. generated.
  2460.  
  2461. Implemented several changes for Notify handling. Added support for new Notify
  2462. values (ACPI 2.0+) and improved the Notify debug output. Notify on
  2463. PowerResource objects is no longer allowed, as per the ACPI specification.
  2464. (Bob Moore, Zhang Rui)
  2465.  
  2466. All Reference Objects returned via the AcpiEvaluateObject interface are now
  2467. marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for
  2468. NULL objects - either NULL package elements or unresolved named references.
  2469.  
  2470. Fixed a problem where an extraneous debug message was produced for package
  2471. objects (when debugging enabled). The message "Package List length larger
  2472. than NumElements count" is now produced in the correct case, and is now an
  2473. error message rather than a debug message. Added a debug message for the
  2474. opposite case, where NumElements is larger than the Package List (the package
  2475. will be padded out with NULL elements as per the ACPI spec.)
  2476.  
  2477. Implemented several improvements for the output of the ASL "Debug" object to
  2478. clarify and keep all data for a given object on one output line.
  2479.  
  2480. Fixed two size calculation issues with the variable-length Start Dependent
  2481. resource descriptor.
  2482.  
  2483. Example Code and Data Size: These are the sizes for the OS-independent
  2484. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2485. debug version of the code includes the debug output trace mechanism and has
  2486. a much larger code and data size.
  2487.  
  2488.   Previous Release:
  2489.     Non-Debug Version:  79.7K Code, 17.3K Data,  97.0K Total
  2490.     Debug Version:     158.9K Code, 64.0K Data, 222.9K Total
  2491.   Current Release:
  2492.     Non-Debug Version:  80.0K Code, 17.4K Data,  97.4K Total
  2493.     Debug Version:     159.4K Code, 64.4K Data, 223.8K Total
  2494.  
  2495. 2) iASL Compiler/Disassembler and Tools:
  2496.  
  2497. Fixed a problem with the use of the Switch operator where execution of the
  2498. containing method by multiple concurrent threads could cause an
  2499. AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
  2500. actual Switch opcode, it must be simulated with local named temporary
  2501. variables and if/else pairs. The solution chosen was to mark any method that
  2502. uses Switch as Serialized, thus preventing multiple thread entries. BZ 469.
  2503.  
  2504. ----------------------------------------
  2505. 13 February 2008. Summary of changes for version 20080213:
  2506.  
  2507. 1) ACPI CA Core Subsystem:
  2508.  
  2509. Implemented another MS compatibility design change for GPE/Notify handling.
  2510. GPEs are now cleared/enabled asynchronously to allow all pending notifies to
  2511. complete first. It is expected that the OSL will queue the enable request
  2512. behind all pending notify requests (may require changes to the local host OSL
  2513. in AcpiOsExecute). Alexey Starikovskiy.
  2514.  
  2515. Fixed a problem where buffer and package objects passed as arguments to a
  2516. control method via the external AcpiEvaluateObject interface could cause an
  2517. AE_AML_INTERNAL exception depending on the order and type of operators
  2518. executed by the target control method.
  2519.  
  2520. Fixed a problem where resource descriptor size optimization could cause a
  2521. problem when a _CRS resource template is passed to a _SRS method. The _SRS
  2522. resource template must use the same descriptors (with the same size) as
  2523. returned from _CRS. This change affects the following resource descriptors:
  2524. IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487)
  2525.  
  2526. Fixed a problem where a CopyObject to RegionField, BankField, and IndexField
  2527. objects did not perform an implicit conversion as it should. These types must
  2528. retain their initial type permanently as per the ACPI specification. However,
  2529. a CopyObject to all other object types should not perform an implicit
  2530. conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
  2531.  
  2532. Fixed a problem with the AcpiGetDevices interface where the mechanism to
  2533. match device CIDs did not examine the entire list of available CIDs, but
  2534. instead aborted on the first non-matching CID. Andrew Patterson.
  2535.  
  2536. Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was
  2537. inadvertently changed to return a 16-bit value instead of a 32-bit value,
  2538. truncating the upper dword of a 64-bit value. This macro is only used to
  2539. display debug output, so no incorrect calculations were made. Also,
  2540. reimplemented the macro so that a 64-bit shift is not performed by
  2541. inefficient compilers.
  2542.  
  2543. Added missing va_end statements that should correspond with each va_start
  2544. statement.
  2545.  
  2546. Example Code and Data Size: These are the sizes for the OS-independent
  2547. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2548. debug version of the code includes the debug output trace mechanism and has
  2549. a much larger code and data size.
  2550.  
  2551.   Previous Release:
  2552.     Non-Debug Version:  79.5K Code, 17.2K Data,  96.7K Total
  2553.     Debug Version:     159.0K Code, 63.8K Data, 222.8K Total
  2554.   Current Release:
  2555.     Non-Debug Version:  79.7K Code, 17.3K Data,  97.0K Total
  2556.     Debug Version:     158.9K Code, 64.0K Data, 222.9K Total
  2557.  
  2558. 2) iASL Compiler/Disassembler and Tools:
  2559.  
  2560. Implemented full disassembler support for the following new ACPI tables:
  2561. BERT, EINJ, and ERST. Implemented partial disassembler support for the
  2562. complicated HEST table. These tables support the Windows Hardware Error
  2563. Architecture (WHEA).
  2564.  
  2565. ----------------------------------------
  2566. 23 January 2008. Summary of changes for version 20080123:
  2567.  
  2568. 1) ACPI CA Core Subsystem:
  2569.  
  2570. Added the 2008 copyright to all module headers and signons. This affects
  2571. virtually every file in the ACPICA core subsystem, the iASL compiler, and
  2572. the tools/utilities.
  2573.  
  2574. Fixed a problem with the SizeOf operator when used with Package and Buffer
  2575. objects. These objects have deferred execution for some arguments, and the
  2576. execution is now completed before the SizeOf is executed. This problem caused
  2577. unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ
  2578. 9558
  2579.  
  2580. Implemented an enhancement to the interpreter "slack mode". In the absence of
  2581. an explicit return or an implicitly returned object from the last executed
  2582. opcode, a control method will now implicitly return an integer of value 0 for
  2583. Microsoft compatibility. (Lin Ming) BZ 392
  2584.  
  2585. Fixed a problem with the Load operator where an exception was not returned in
  2586. the case where the table is already loaded. (Lin Ming) BZ 463
  2587.  
  2588. Implemented support for the use of DDBHandles as an Indexed Reference, as per
  2589. the ACPI spec. (Lin Ming) BZ 486
  2590.  
  2591. Implemented support for UserTerm (Method invocation) for the Unload operator
  2592. as per the ACPI spec. (Lin Ming) BZ 580
  2593.  
  2594. Fixed a problem with the LoadTable operator where the OemId and OemTableId
  2595. input strings could cause unexpected failures if they were shorter than the
  2596. maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
  2597.  
  2598. Implemented support for UserTerm (Method invocation) for the Unload operator
  2599. as per the ACPI spec. (Lin Ming) BZ 580
  2600.  
  2601. Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST,
  2602. IBFT, UEFI, WDAT. Disassembler support is forthcoming.
  2603.  
  2604. Example Code and Data Size: These are the sizes for the OS-independent
  2605. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2606. debug version of the code includes the debug output trace mechanism and has
  2607. a much larger code and data size.
  2608.  
  2609.   Previous Release:
  2610.     Non-Debug Version:  79.3K Code, 17.2K Data,  96.5K Total
  2611.     Debug Version:     158.6K Code, 63.8K Data, 222.4K Total
  2612.   Current Release:
  2613.     Non-Debug Version:  79.5K Code, 17.2K Data,  96.7K Total
  2614.     Debug Version:     159.0K Code, 63.8K Data, 222.8K Total
  2615.  
  2616. 2) iASL Compiler/Disassembler and Tools:
  2617.  
  2618. Implemented support in the disassembler for checksum validation on incoming
  2619. binary DSDTs and SSDTs. If incorrect, a message is displayed within the table
  2620. header dump at the start of the disassembly.
  2621.  
  2622. Implemented additional debugging information in the namespace listing file
  2623. created during compilation. In addition to the namespace hierarchy, the full
  2624. pathname to each namespace object is displayed.
  2625.  
  2626. Fixed a problem with the disassembler where invalid ACPI tables could cause
  2627. faults or infinite loops.
  2628.  
  2629. Fixed an unexpected parse error when using the optional "parameter types"
  2630. list in a control method declaration. (Lin Ming) BZ 397
  2631.  
  2632. Fixed a problem where two External declarations with the same name did not
  2633. cause an error (Lin Ming) BZ 509
  2634.  
  2635. Implemented support for full TermArgs (adding Argx, Localx and method
  2636. invocation) for the ParameterData parameter to the LoadTable operator. (Lin
  2637. Ming) BZ 583,587
  2638.  
  2639. ----------------------------------------
  2640. 19 December 2007. Summary of changes for version 20071219:
  2641.  
  2642. 1) ACPI CA Core Subsystem:
  2643.  
  2644. Implemented full support for deferred execution for the TermArg string
  2645. arguments for DataTableRegion. This enables forward references and full
  2646. operand resolution for the three string arguments. Similar to OperationRegion
  2647. deferred argument execution.) Lin Ming. BZ 430
  2648.  
  2649. Implemented full argument resolution support for the BankValue argument to
  2650. BankField. Previously, only constants were supported, now any TermArg may be
  2651. used. Lin Ming BZ 387, 393
  2652.  
  2653. Fixed a problem with AcpiGetDevices where the search of a branch of the
  2654. device tree could be terminated prematurely. In accordance with the ACPI
  2655. specification, the search down the current branch is terminated if a device
  2656. is both not present and not functional (instead of just not present.) Yakui
  2657. Zhao.
  2658.  
  2659. Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if
  2660. the underlying AML code changed the GPE enable registers. Now, any unknown
  2661. incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled
  2662. instead of simply ignored. Rui Zhang.
  2663.  
  2664. Fixed a problem with Index Fields where the Index register was incorrectly
  2665. limited to a maximum of 32 bits. Now any size may be used.
  2666.  
  2667. Fixed a couple memory leaks associated with "implicit return" objects when
  2668. the AML Interpreter slack mode is enabled. Lin Ming BZ 349
  2669.  
  2670. Example Code and Data Size: These are the sizes for the OS-independent
  2671. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2672. debug version of the code includes the debug output trace mechanism and has
  2673. a much larger code and data size.
  2674.  
  2675.   Previous Release:
  2676.     Non-Debug Version:  79.0K Code, 17.2K Data,  96.2K Total
  2677.     Debug Version:     157.9K Code, 63.6K Data, 221.5K Total
  2678.   Current Release:
  2679.     Non-Debug Version:  79.3K Code, 17.2K Data,  96.5K Total
  2680.     Debug Version:     158.6K Code, 63.8K Data, 222.4K Total
  2681.  
  2682. ----------------------------------------
  2683. 14 November 2007. Summary of changes for version 20071114:
  2684.  
  2685. 1) ACPI CA Core Subsystem:
  2686.  
  2687. Implemented event counters for each of the Fixed Events, the ACPI SCI
  2688. (interrupt) itself, and control methods executed. Named
  2689. AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These
  2690. should be useful for debugging and statistics.
  2691.  
  2692. Implemented a new external interface, AcpiGetStatistics, to retrieve the
  2693. contents of the various event counters. Returns the current values for
  2694. AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
  2695. AcpiMethodCount. The interface can be expanded in the future if new counters
  2696. are added. Device drivers should use this interface rather than access the
  2697. counters directly.
  2698.  
  2699. Fixed a problem with the FromBCD and ToBCD operators. With some compilers,
  2700. the ShortDivide function worked incorrectly, causing problems with the BCD
  2701. functions with large input values. A truncation from 64-bit to 32-bit
  2702. inadvertently occurred. Internal BZ 435. Lin Ming
  2703.  
  2704. Fixed a problem with Index references passed as method arguments. References
  2705. passed as arguments to control methods were dereferenced immediately (before
  2706. control was passed to the called method). The references are now correctly
  2707. passed directly to the called method. BZ 5389. Lin Ming
  2708.  
  2709. Fixed a problem with CopyObject used in conjunction with the Index operator.
  2710. The reference was incorrectly dereferenced before the copy. The reference is
  2711. now correctly copied. BZ 5391. Lin Ming
  2712.  
  2713. Fixed a problem with Control Method references within Package objects. These
  2714. references are now correctly generated. This completes the package
  2715. construction overhaul that began in version 20071019.
  2716.  
  2717. Example Code and Data Size: These are the sizes for the OS-independent
  2718. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2719. debug version of the code includes the debug output trace mechanism and has
  2720. a much larger code and data size.
  2721.  
  2722.   Previous Release:
  2723.     Non-Debug Version:  78.8K Code, 17.2K Data,  96.0K Total
  2724.     Debug Version:     157.2K Code, 63.4K Data, 220.6K Total
  2725.   Current Release:
  2726.     Non-Debug Version:  79.0K Code, 17.2K Data,  96.2K Total
  2727.     Debug Version:     157.9K Code, 63.6K Data, 221.5K Total
  2728.  
  2729.  
  2730. 2) iASL Compiler/Disassembler and Tools:
  2731.  
  2732. The AcpiExec utility now installs handlers for all of the predefined
  2733. Operation Region types. New types supported are: PCI_Config, CMOS, and
  2734. PCIBARTarget.
  2735.  
  2736. Fixed a problem with the 64-bit version of AcpiExec where the extended (64-
  2737. bit) address fields for the DSDT and FACS within the FADT were not being
  2738. used, causing truncation of the upper 32-bits of these addresses. Lin Ming
  2739. and Bob Moore
  2740.  
  2741. ----------------------------------------
  2742. 19 October 2007. Summary of changes for version 20071019:
  2743.  
  2744. 1) ACPI CA Core Subsystem:
  2745.  
  2746. Fixed a problem with the Alias operator when the target of the alias is a
  2747. named ASL operator that opens a new scope -- Scope, Device, PowerResource,
  2748. Processor, and ThermalZone. In these cases, any children of the original
  2749. operator could not be accessed via the alias, potentially causing unexpected
  2750. AE_NOT_FOUND exceptions. (BZ 9067)
  2751.  
  2752. Fixed a problem with the Package operator where all named references were
  2753. created as object references and left otherwise unresolved. According to the
  2754. ACPI specification, a Package can only contain Data Objects or references to
  2755. control methods. The implication is that named references to Data Objects
  2756. (Integer, Buffer, String, Package, BufferField, Field) should be resolved
  2757. immediately upon package creation. This is the approach taken with this
  2758. change. References to all other named objects (Methods, Devices, Scopes,
  2759. etc.) are all now properly created as reference objects. (BZ 5328)
  2760.  
  2761. Reverted a change to Notify handling that was introduced in version
  2762. 20070508. This version changed the Notify handling from asynchronous to
  2763. fully synchronous (Device driver Notify handling with respect to the Notify
  2764. ASL operator). It was found that this change caused more problems than it
  2765. solved and was removed by most users.
  2766.  
  2767. Fixed a problem with the Increment and Decrement operators where the type of
  2768. the target object could be unexpectedly and incorrectly changed. (BZ 353)
  2769. Lin Ming.
  2770.  
  2771. Fixed a problem with the Load and LoadTable operators where the table
  2772. location within the namespace was ignored. Instead, the table was always
  2773. loaded into the root or current scope. Lin Ming.
  2774.  
  2775. Fixed a problem with the Load operator when loading a table from a buffer
  2776. object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
  2777.  
  2778. Fixed a problem with the Debug object where a store of a DdbHandle reference
  2779. object to the Debug object could cause a fault.
  2780.  
  2781. Added a table checksum verification for the Load operator, in the case where
  2782. the load is from a buffer. (BZ 578).
  2783.  
  2784. Implemented additional parameter validation for the LoadTable operator. The
  2785. length of the input strings SignatureString, OemIdString, and OemTableId are
  2786. now checked for maximum lengths. (BZ 582) Lin Ming.
  2787.  
  2788. Example Code and Data Size: These are the sizes for the OS-independent
  2789. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2790. debug version of the code includes the debug output trace mechanism and has
  2791. a much larger code and data size.
  2792.  
  2793.   Previous Release:
  2794.     Non-Debug Version:  78.5K Code, 17.1K Data,  95.6K Total
  2795.     Debug Version:     156.7K Code, 63.2K Data, 219.9K Total
  2796.   Current Release:
  2797.     Non-Debug Version:  78.8K Code, 17.2K Data,  96.0K Total
  2798.     Debug Version:     157.2K Code, 63.4K Data, 220.6K Total
  2799.  
  2800.  
  2801. 2) iASL Compiler/Disassembler:
  2802.  
  2803. Fixed a problem where if a single file was specified and the file did not
  2804. exist, no error message was emitted. (Introduced with wildcard support in
  2805. version 20070917.)
  2806.  
  2807. ----------------------------------------
  2808. 19 September 2007. Summary of changes for version 20070919:
  2809.  
  2810. 1) ACPI CA Core Subsystem:
  2811.  
  2812. Designed and implemented new external interfaces to install and remove
  2813. handlers for ACPI table-related events. Current events that are defined are
  2814. LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
  2815. they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
  2816. AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
  2817.  
  2818. Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
  2819. (acpi_serialized option on Linux) could cause some systems to hang during
  2820. initialization. (Bob Moore) BZ 8171
  2821.  
  2822. Fixed a problem where objects of certain types (Device, ThermalZone,
  2823. Processor, PowerResource) can be not found if they are declared and
  2824. referenced from within the same control method (Lin Ming) BZ 341
  2825.  
  2826. Example Code and Data Size: These are the sizes for the OS-independent
  2827. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2828. debug version of the code includes the debug output trace mechanism and has
  2829. a much larger code and data size.
  2830.  
  2831.   Previous Release:
  2832.     Non-Debug Version:  78.3K Code, 17.0K Data,  95.3K Total
  2833.     Debug Version:     156.3K Code, 63.1K Data, 219.4K Total
  2834.   Current Release:
  2835.     Non-Debug Version:  78.5K Code, 17.1K Data,  95.6K Total
  2836.     Debug Version:     156.7K Code, 63.2K Data, 219.9K Total
  2837.  
  2838.  
  2839. 2) iASL Compiler/Disassembler:
  2840.  
  2841. Implemented support to allow multiple files to be compiled/disassembled in a
  2842. single invocation. This includes command line wildcard support for both the
  2843. Windows and Unix versions of the compiler. This feature simplifies the
  2844. disassembly and compilation of multiple ACPI tables in a single directory.
  2845.  
  2846. ----------------------------------------
  2847. 08 May 2007. Summary of changes for version 20070508:
  2848.  
  2849. 1) ACPI CA Core Subsystem:
  2850.  
  2851. Implemented a Microsoft compatibility design change for the handling of the
  2852. Notify AML operator. Previously, notify handlers were dispatched and
  2853. executed completely asynchronously in a deferred thread. The new design
  2854. still executes the notify handlers in a different thread, but the original
  2855. thread that executed the Notify() now waits at a synchronization point for
  2856. the notify handler to complete. Some machines depend on a synchronous Notify
  2857. operator in order to operate correctly.
  2858.  
  2859. Implemented support to allow Package objects to be passed as method
  2860. arguments to the external AcpiEvaluateObject interface. Previously, this
  2861. would return the AE_NOT_IMPLEMENTED exception. This feature had not been
  2862. implemented since there were no reserved control methods that required it
  2863. until recently.
  2864.  
  2865. Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that
  2866. contained invalid non-zero values in reserved fields could cause later
  2867. failures because these fields have meaning in later revisions of the FADT.
  2868. For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields
  2869. are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
  2870.  
  2871. Fixed a problem where the Global Lock handle was not properly updated if a
  2872. thread that acquired the Global Lock via executing AML code then attempted
  2873. to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe
  2874. Liu.
  2875.  
  2876. Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
  2877. could be corrupted if the interrupt being removed was at the head of the
  2878. list. Reported by Linn Crosetto.
  2879.  
  2880. Example Code and Data Size: These are the sizes for the OS-independent
  2881. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2882. debug version of the code includes the debug output trace mechanism and has
  2883. a much larger code and data size.
  2884.  
  2885.   Previous Release:
  2886.     Non-Debug Version:  78.0K Code, 17.1K Data,  95.1K Total
  2887.     Debug Version:     155.9K Code, 63.1K Data, 219.0K Total
  2888.   Current Release:
  2889.     Non-Debug Version:  78.3K Code, 17.0K Data,  95.3K Total
  2890.     Debug Version:     156.3K Code, 63.1K Data, 219.4K Total
  2891.  
  2892. ----------------------------------------
  2893. 20 March 2007. Summary of changes for version 20070320:
  2894.  
  2895. 1) ACPI CA Core Subsystem:
  2896.  
  2897. Implemented a change to the order of interpretation and evaluation of AML
  2898. operand objects within the AML interpreter. The interpreter now evaluates
  2899. operands in the order that they appear in the AML stream (and the
  2900. corresponding ASL code), instead of in the reverse order (after the entire
  2901. operand list has been parsed). The previous behavior caused several subtle
  2902. incompatibilities with the Microsoft AML interpreter as well as being
  2903. somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
  2904.  
  2905. Implemented a change to the ACPI Global Lock support. All interfaces to the
  2906. global lock now allow the same thread to acquire the lock multiple times.
  2907. This affects the AcpiAcquireGlobalLock external interface to the global lock
  2908. as well as the internal use of the global lock to support AML fields -- a
  2909. control method that is holding the global lock can now simultaneously access
  2910. AML fields that require global lock protection. Previously, in both cases,
  2911. this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to
  2912. AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
  2913. Controller. There is no change to the behavior of the AML Acquire operator,
  2914. as this can already be used to acquire a mutex multiple times by the same
  2915. thread. BZ 8066. With assistance from Alexey Starikovskiy.
  2916.  
  2917. Fixed a problem where invalid objects could be referenced in the AML
  2918. Interpreter after error conditions. During operand evaluation, ensure that
  2919. the internal "Return Object" field is cleared on error and only valid
  2920. pointers are stored there. Caused occasional access to deleted objects that
  2921. resulted in "large reference count" warning messages. Valery Podrezov.
  2922.  
  2923. Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on
  2924. deeply nested control method invocations. BZ 7873, local BZ 487. Valery
  2925. Podrezov.
  2926.  
  2927. Fixed an internal problem with the handling of result objects on the
  2928. interpreter result stack. BZ 7872. Valery Podrezov.
  2929.  
  2930. Removed obsolete code that handled the case where AML_NAME_OP is the target
  2931. of a reference (Reference.Opcode). This code was no longer necessary. BZ
  2932. 7874. Valery Podrezov.
  2933.  
  2934. Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a
  2935. remnant from the previously discontinued 16-bit support.
  2936.  
  2937. Example Code and Data Size: These are the sizes for the OS-independent
  2938. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2939. debug version of the code includes the debug output trace mechanism and has
  2940. a much larger code and data size.
  2941.  
  2942.   Previous Release:
  2943.     Non-Debug Version:  78.0K Code, 17.1K Data,  95.1K Total
  2944.     Debug Version:     155.8K Code, 63.3K Data, 219.1K Total
  2945.   Current Release:
  2946.     Non-Debug Version:  78.0K Code, 17.1K Data,  95.1K Total
  2947.     Debug Version:     155.9K Code, 63.1K Data, 219.0K Total
  2948.  
  2949. ----------------------------------------
  2950. 26 January 2007. Summary of changes for version 20070126:
  2951.  
  2952. 1) ACPI CA Core Subsystem:
  2953.  
  2954. Added the 2007 copyright to all module headers and signons. This affects
  2955. virtually every file in the ACPICA core subsystem, the iASL compiler, and
  2956. the utilities.
  2957.  
  2958. Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
  2959. during a table load. A bad pointer was passed in the case where the DSDT is
  2960. overridden, causing a fault in this case.
  2961.  
  2962. Example Code and Data Size: These are the sizes for the OS-independent
  2963. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  2964. debug version of the code includes the debug output trace mechanism and has
  2965. a much larger code and data size.
  2966.  
  2967.   Previous Release:
  2968.     Non-Debug Version:  78.0K Code, 17.1K Data,  95.1K Total
  2969.     Debug Version:     155.8K Code, 63.3K Data, 219.1K Total
  2970.   Current Release:
  2971.     Non-Debug Version:  78.0K Code, 17.1K Data,  95.1K Total
  2972.     Debug Version:     155.8K Code, 63.3K Data, 219.1K Total
  2973.  
  2974. ----------------------------------------
  2975. 15 December 2006. Summary of changes for version 20061215:
  2976.  
  2977. 1) ACPI CA Core Subsystem:
  2978.  
  2979. Support for 16-bit ACPICA has been completely removed since it is no longer
  2980. necessary and it clutters the code. All 16-bit macros, types, and
  2981. conditional compiles have been removed, cleaning up and simplifying the code
  2982. across the entire subsystem. DOS support is no longer needed since the
  2983. bootable Linux firmware kit is now available.
  2984.  
  2985. The handler for the Global Lock is now removed during AcpiTerminate to
  2986. enable a clean subsystem restart, via the implementation of the
  2987. AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
  2988. HP)
  2989.  
  2990. Implemented enhancements to the multithreading support within the debugger
  2991. to enable improved multithreading debugging and evaluation of the subsystem.
  2992. (Valery Podrezov)
  2993.  
  2994. Debugger: Enhanced the Statistics/Memory command to emit the total (maximum)
  2995. memory used during the execution, as well as the maximum memory consumed by
  2996. each of the various object types. (Valery Podrezov)
  2997.  
  2998. Example Code and Data Size: These are the sizes for the OS-independent
  2999. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3000. debug version of the code includes the debug output trace mechanism and has
  3001. a much larger code and data size.
  3002.  
  3003.   Previous Release:
  3004.     Non-Debug Version:  77.9K Code, 17.0K Data,  94.9K Total
  3005.     Debug Version:     155.2K Code, 63.1K Data, 218.3K Total
  3006.   Current Release:
  3007.     Non-Debug Version:  78.0K Code, 17.1K Data,  95.1K Total
  3008.     Debug Version:     155.8K Code, 63.3K Data, 219.1K Total
  3009.  
  3010.  
  3011. 2) iASL Compiler/Disassembler and Tools:
  3012.  
  3013. AcpiExec: Implemented a new option (-m) to display full memory use
  3014. statistics upon subsystem/program termination. (Valery Podrezov)
  3015.  
  3016. ----------------------------------------
  3017. 09 November 2006. Summary of changes for version 20061109:
  3018.  
  3019. 1) ACPI CA Core Subsystem:
  3020.  
  3021. Optimized the Load ASL operator in the case where the source operand is an
  3022. operation region. Simply map the operation region memory, instead of
  3023. performing a bytewise read. (Region must be of type SystemMemory, see
  3024. below.)
  3025.  
  3026. Fixed the Load ASL operator for the case where the source operand is a
  3027. region field. A buffer object is also allowed as the source operand. BZ 480
  3028.  
  3029. Fixed a problem where the Load ASL operator allowed the source operand to be
  3030. an operation region of any type. It is now restricted to regions of type
  3031. SystemMemory, as per the ACPI specification. BZ 481
  3032.  
  3033. Additional cleanup and optimizations for the new Table Manager code.
  3034.  
  3035. AcpiEnable will now fail if all of the required ACPI tables are not loaded
  3036. (FADT, FACS, DSDT). BZ 477
  3037.  
  3038. Added #pragma pack(8/4) to acobject.h to ensure that the structures in this
  3039. header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
  3040. manually optimized to be aligned and will not work if it is byte-packed.
  3041.  
  3042. Example Code and Data Size: These are the sizes for the OS-independent
  3043. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3044. debug version of the code includes the debug output trace mechanism and has
  3045. a much larger code and data size.
  3046.  
  3047.   Previous Release:
  3048.     Non-Debug Version:  78.1K Code, 17.1K Data,  95.2K Total
  3049.     Debug Version:     155.4K Code, 63.1K Data, 218.5K Total
  3050.   Current Release:
  3051.     Non-Debug Version:  77.9K Code, 17.0K Data,  94.9K Total
  3052.     Debug Version:     155.2K Code, 63.1K Data, 218.3K Total
  3053.  
  3054.  
  3055. 2) iASL Compiler/Disassembler and Tools:
  3056.  
  3057. Fixed a problem where the presence of the _OSI predefined control method
  3058. within complex expressions could cause an internal compiler error.
  3059.  
  3060. AcpiExec: Implemented full region support for multiple address spaces.
  3061. SpaceId is now part of the REGION object. BZ 429
  3062.  
  3063. ----------------------------------------
  3064. 11 October 2006. Summary of changes for version 20061011:
  3065.  
  3066. 1) ACPI CA Core Subsystem:
  3067.  
  3068. Completed an AML interpreter performance enhancement for control method
  3069. execution. Previously a 2-pass parse/execution, control methods are now
  3070. completely parsed and executed in a single pass. This improves overall
  3071. interpreter performance by ~25%, reduces code size, and reduces CPU stack
  3072. use. (Valery Podrezov + interpreter changes in version 20051202 that
  3073. eliminated namespace loading during the pass one parse.)
  3074.  
  3075. Implemented _CID support for PCI Root Bridge detection. If the _HID does not
  3076. match the predefined PCI Root Bridge IDs, the _CID list (if present) is now
  3077. obtained and also checked for an ID match.
  3078.  
  3079. Implemented additional support for the PCI _ADR execution: upsearch until a
  3080. device scope is found before executing _ADR. This allows PCI_Config
  3081. operation regions to be declared locally within control methods underneath
  3082. PCI device objects.
  3083.  
  3084. Fixed a problem with a possible race condition between threads executing
  3085. AcpiWalkNamespace and the AML interpreter. This condition was removed by
  3086. modifying AcpiWalkNamespace to (by default) ignore all temporary namespace
  3087. entries created during any concurrent control method execution. An
  3088. additional namespace race condition is known to exist between
  3089. AcpiWalkNamespace and the Load/Unload ASL operators and is still under
  3090. investigation.
  3091.  
  3092. Restructured the AML ParseLoop function, breaking it into several
  3093. subfunctions in order to reduce CPU stack use and improve maintainability.
  3094. (Mikhail Kouzmich)
  3095.  
  3096. AcpiGetHandle: Fix for parameter validation to detect invalid combinations
  3097. of prefix handle and pathname. BZ 478
  3098.  
  3099. Example Code and Data Size: These are the sizes for the OS-independent
  3100. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3101. debug version of the code includes the debug output trace mechanism and has
  3102. a much larger code and data size.
  3103.  
  3104.   Previous Release:
  3105.     Non-Debug Version:  77.9K Code, 17.1K Data,  95.0K Total
  3106.     Debug Version:     154.6K Code, 63.0K Data, 217.6K Total
  3107.   Current Release:
  3108.     Non-Debug Version:  78.1K Code, 17.1K Data,  95.2K Total
  3109.     Debug Version:     155.4K Code, 63.1K Data, 218.5K Total
  3110.  
  3111. 2) iASL Compiler/Disassembler and Tools:
  3112.  
  3113. Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager
  3114. to restore original behavior.
  3115.  
  3116. ----------------------------------------
  3117. 27 September 2006. Summary of changes for version 20060927:
  3118.  
  3119. 1) ACPI CA Core Subsystem:
  3120.  
  3121. Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
  3122. These functions now use a spinlock for mutual exclusion and the interrupt
  3123. level indication flag is not needed.
  3124.  
  3125. Fixed a problem with the Global Lock where the lock could appear to be
  3126. obtained before it is actually obtained. The global lock semaphore was
  3127. inadvertently created with one unit instead of zero units. (BZ 464) Fiodor
  3128. Suietov.
  3129.  
  3130. Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during
  3131. a read from a buffer or region field. (BZ 458) Fiodor Suietov.
  3132.  
  3133. Example Code and Data Size: These are the sizes for the OS-independent
  3134. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3135. debug version of the code includes the debug output trace mechanism and has
  3136. a much larger code and data size.
  3137.  
  3138.   Previous Release:
  3139.     Non-Debug Version:  77.9K Code, 17.1K Data,  95.0K Total
  3140.     Debug Version:     154.7K Code, 63.0K Data, 217.7K Total
  3141.   Current Release:
  3142.     Non-Debug Version:  77.9K Code, 17.1K Data,  95.0K Total
  3143.     Debug Version:     154.6K Code, 63.0K Data, 217.6K Total
  3144.  
  3145.  
  3146. 2) iASL Compiler/Disassembler and Tools:
  3147.  
  3148. Fixed a compilation problem with the pre-defined Resource Descriptor field
  3149. names where an "object does not exist" error could be incorrectly generated
  3150. if the parent ResourceTemplate pathname places the template within a
  3151. different namespace scope than the current scope. (BZ 7212)
  3152.  
  3153. Fixed a problem where the compiler could hang after syntax errors detected
  3154. in an ElseIf construct. (BZ 453)
  3155.  
  3156. Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
  3157. operator. An incorrect output filename was produced when this parameter was
  3158. a null string (""). Now, the original input filename is used as the AML
  3159. output filename, with an ".aml" extension.
  3160.  
  3161. Implemented a generic batch command mode for the AcpiExec utility (execute
  3162. any AML debugger command) (Valery Podrezov).
  3163.  
  3164. ----------------------------------------
  3165. 12 September 2006. Summary of changes for version 20060912:
  3166.  
  3167. 1) ACPI CA Core Subsystem:
  3168.  
  3169. Enhanced the implementation of the "serialized mode" of the interpreter
  3170. (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
  3171. specified, instead of creating a serialization semaphore per control method,
  3172. the interpreter lock is simply no longer released before a blocking
  3173. operation during control method execution. This effectively makes the AML
  3174. Interpreter single-threaded. The overhead of a semaphore per-method is
  3175. eliminated.
  3176.  
  3177. Fixed a regression where an error was no longer emitted if a control method
  3178. attempts to create 2 objects of the same name. This once again returns
  3179. AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that
  3180. will dynamically serialize the control method to possible prevent future
  3181. errors. (BZ 440)
  3182.  
  3183. Integrated a fix for a problem with PCI Express HID detection in the PCI
  3184. Config Space setup procedure. (BZ 7145)
  3185.  
  3186. Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
  3187. AcpiHwInitialize function - the FADT registers are now validated when the
  3188. table is loaded.
  3189.  
  3190. Added two new warnings during FADT verification - 1) if the FADT is larger
  3191. than the largest known FADT version, and 2) if there is a mismatch between a
  3192. 32-bit block address and the 64-bit X counterpart (when both are non-zero.)
  3193.  
  3194. Example Code and Data Size: These are the sizes for the OS-independent
  3195. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3196. debug version of the code includes the debug output trace mechanism and has
  3197. a much larger code and data size.
  3198.  
  3199.   Previous Release:
  3200.     Non-Debug Version:  77.9K Code, 16.7K Data,  94.6K Total
  3201.     Debug Version:     154.9K Code, 62.6K Data, 217.5K Total
  3202.   Current Release:
  3203.     Non-Debug Version:  77.9K Code, 17.1K Data,  95.0K Total
  3204.     Debug Version:     154.7K Code, 63.0K Data, 217.7K Total
  3205.  
  3206.  
  3207. 2) iASL Compiler/Disassembler and Tools:
  3208.  
  3209. Fixed a problem with the implementation of the Switch() operator where the
  3210. temporary variable was declared too close to the actual Switch, instead of
  3211. at method level. This could cause a problem if the Switch() operator is
  3212. within a while loop, causing an error on the second iteration. (BZ 460)
  3213.  
  3214. Disassembler - fix for error emitted for unknown type for target of scope
  3215. operator. Now, ignore it and continue.
  3216.  
  3217. Disassembly of an FADT now verifies the input FADT and reports any errors
  3218. found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
  3219.  
  3220. Disassembly of raw data buffers with byte initialization data now prefixes
  3221. each output line with the current buffer offset.
  3222.  
  3223. Disassembly of ASF! table now includes all variable-length data fields at
  3224. the end of some of the subtables.
  3225.  
  3226. The disassembler now emits a comment if a buffer appears to be a
  3227. ResourceTemplate, but cannot be disassembled as such because the EndTag does
  3228. not appear at the very end of the buffer.
  3229.  
  3230. AcpiExec - Added the "-t" command line option to enable the serialized mode
  3231. of the AML interpreter.
  3232.  
  3233. ----------------------------------------
  3234. 31 August 2006. Summary of changes for version 20060831:
  3235.  
  3236. 1) ACPI CA Core Subsystem:
  3237.  
  3238. Miscellaneous fixes for the Table Manager:
  3239. - Correctly initialize internal common FADT for all 64-bit "X" fields
  3240. - Fixed a couple table mapping issues during table load
  3241. - Fixed a couple alignment issues for IA64
  3242. - Initialize input array to zero in AcpiInitializeTables
  3243. - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
  3244. AcpiGetTableByIndex
  3245.  
  3246. Change for GPE support: when a "wake" GPE is received, all wake GPEs are now
  3247. immediately disabled to prevent the waking GPE from firing again and to
  3248. prevent other wake GPEs from interrupting the wake process.
  3249.  
  3250. Added the AcpiGpeCount global that tracks the number of processed GPEs, to
  3251. be used for debugging systems with a large number of ACPI interrupts.
  3252.  
  3253. Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
  3254. both the ACPICA headers and the disassembler.
  3255.  
  3256. Example Code and Data Size: These are the sizes for the OS-independent
  3257. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3258. debug version of the code includes the debug output trace mechanism and has
  3259. a much larger code and data size.
  3260.  
  3261.   Previous Release:
  3262.     Non-Debug Version:  77.8K Code, 16.5K Data,  94.3K Total
  3263.     Debug Version:     154.6K Code, 62.3K Data, 216.9K Total
  3264.   Current Release:
  3265.     Non-Debug Version:  77.9K Code, 16.7K Data,  94.6K Total
  3266.     Debug Version:     154.9K Code, 62.6K Data, 217.5K Total
  3267.  
  3268.  
  3269. 2) iASL Compiler/Disassembler and Tools:
  3270.  
  3271. Disassembler support for the DMAR ACPI table.
  3272.  
  3273. ----------------------------------------
  3274. 23 August 2006. Summary of changes for version 20060823:
  3275.  
  3276. 1) ACPI CA Core Subsystem:
  3277.  
  3278. The Table Manager component has been completely redesigned and
  3279. reimplemented. The new design is much simpler, and reduces the overall code
  3280. and data size of the kernel-resident ACPICA by approximately 5%. Also, it is
  3281. now possible to obtain the ACPI tables very early during kernel
  3282. initialization, even before dynamic memory management is initialized.
  3283. (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
  3284.  
  3285. Obsolete ACPICA interfaces:
  3286.  
  3287. - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init
  3288. time).
  3289. - AcpiLoadTable: Not needed.
  3290. - AcpiUnloadTable: Not needed.
  3291.  
  3292. New ACPICA interfaces:
  3293.  
  3294. - AcpiInitializeTables: Must be called before the table manager can be used.
  3295. - AcpiReallocateRootTable: Used to transfer the root table to dynamically
  3296. allocated memory after it becomes available.
  3297. - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables
  3298. in the RSDT/XSDT.
  3299.  
  3300. Other ACPICA changes:
  3301.  
  3302. - AcpiGetTableHeader returns the actual mapped table header, not a copy. Use
  3303. AcpiOsUnmapMemory to free this mapping.
  3304. - AcpiGetTable returns the actual mapped table. The mapping is managed
  3305. internally and must not be deleted by the caller. Use of this interface
  3306. causes no additional dynamic memory allocation.
  3307. - AcpiFindRootPointer: Support for physical addressing has been eliminated,
  3308. it appeared to be unused.
  3309. - The interface to AcpiOsMapMemory has changed to be consistent with the
  3310. other allocation interfaces.
  3311. - The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary
  3312. parameters.
  3313. - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64-
  3314. bit platforms. Was previously 64 bits on all platforms.
  3315. - The interface to the ACPI Global Lock acquire/release macros have changed
  3316. slightly since ACPICA no longer keeps a local copy of the FACS with a
  3317. constructed pointer to the actual global lock.
  3318.  
  3319. Porting to the new table manager:
  3320.  
  3321. - AcpiInitializeTables: Must be called once, and can be called anytime
  3322. during the OS initialization process. It allows the host to specify an area
  3323. of memory to be used to store the internal version of the RSDT/XSDT (root
  3324. table). This allows the host to access ACPI tables before memory management
  3325. is initialized and running.
  3326. - AcpiReallocateRootTable: Can be called after memory management is running
  3327. to copy the root table to a dynamically allocated array, freeing up the
  3328. scratch memory specified in the call to AcpiInitializeTables.
  3329. - AcpiSubsystemInitialize: This existing interface is independent of the
  3330. Table Manager, and does not have to be called before the Table Manager can
  3331. be used, it only must be called before the rest of ACPICA can be used.
  3332. - ACPI Tables: Some changes have been made to the names and structure of the
  3333. actbl.h and actbl1.h header files and may require changes to existing code.
  3334. For example, bitfields have been completely removed because of their lack of
  3335. portability across C compilers.
  3336. - Update interfaces to the Global Lock acquire/release macros if local
  3337. versions are used. (see acwin.h)
  3338.  
  3339. Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
  3340.  
  3341. New files: tbfind.c
  3342.  
  3343. Example Code and Data Size: These are the sizes for the OS-independent
  3344. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3345. debug version of the code includes the debug output trace mechanism and has
  3346. a much larger code and data size.
  3347.  
  3348.   Previous Release:
  3349.     Non-Debug Version:  80.7K Code, 17.9K Data,  98.6K Total
  3350.     Debug Version:     161.0K Code, 65.1K Data, 226.1K Total
  3351.   Current Release:
  3352.     Non-Debug Version:  77.8K Code, 16.5K Data,  94.3K Total
  3353.     Debug Version:     154.6K Code, 62.3K Data, 216.9K Total
  3354.  
  3355.  
  3356. 2) iASL Compiler/Disassembler and Tools:
  3357.  
  3358. No changes for this release.
  3359.  
  3360. ----------------------------------------
  3361. 21 July 2006. Summary of changes for version 20060721:
  3362.  
  3363. 1) ACPI CA Core Subsystem:
  3364.  
  3365. The full source code for the ASL test suite used to validate the iASL
  3366. compiler and the ACPICA core subsystem is being released with the ACPICA
  3367. source for the first time. The source is contained in a separate package and
  3368. consists of over 1100 files that exercise all ASL/AML operators. The package
  3369. should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor
  3370. Suietov)
  3371.  
  3372. Completed a new design and implementation for support of the ACPI Global
  3373. Lock. On the OS side, the global lock is now treated as a standard AML
  3374. mutex. Previously, multiple OS threads could "acquire" the global lock
  3375. simultaneously. However, this could cause the BIOS to be starved out of the
  3376. lock - especially in cases such as the Embedded Controller driver where
  3377. there is a tight coupling between the OS and the BIOS.
  3378.  
  3379. Implemented an optimization for the ACPI Global Lock interrupt mechanism.
  3380. The Global Lock interrupt handler no longer queues the execution of a
  3381. separate thread to signal the global lock semaphore. Instead, the semaphore
  3382. is signaled directly from the interrupt handler.
  3383.  
  3384. Implemented support within the AML interpreter for package objects that
  3385. contain a larger AML length (package list length) than the package element
  3386. count. In this case, the length of the package is truncated to match the
  3387. package element count. Some BIOS code apparently modifies the package length
  3388. on the fly, and this change supports this behavior. Provides compatibility
  3389. with the MS AML interpreter. (With assistance from Fiodor Suietov)
  3390.  
  3391. Implemented a temporary fix for the BankValue parameter of a Bank Field to
  3392. support all constant values, now including the Zero and One opcodes.
  3393. Evaluation of this parameter must eventually be converted to a full TermArg
  3394. evaluation. A not-implemented error is now returned (temporarily) for non-
  3395. constant values for this parameter.
  3396.  
  3397. Fixed problem reports (Fiodor Suietov) integrated:
  3398. - Fix for premature object deletion after CopyObject on Operation Region (BZ
  3399. 350)
  3400.  
  3401. Example Code and Data Size: These are the sizes for the OS-independent
  3402. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3403. debug version of the code includes the debug output trace mechanism and has
  3404. a much larger code and data size.
  3405.  
  3406.   Previous Release:
  3407.     Non-Debug Version:  80.7K Code, 18.0K Data,  98.7K Total
  3408.     Debug Version:     160.9K Code, 65.1K Data, 226.0K Total
  3409.   Current Release:
  3410.     Non-Debug Version:  80.7K Code, 17.9K Data,  98.6K Total
  3411.     Debug Version:     161.0K Code, 65.1K Data, 226.1K Total
  3412.  
  3413.  
  3414. 2) iASL Compiler/Disassembler and Tools:
  3415.  
  3416. No changes for this release.
  3417.  
  3418. ----------------------------------------
  3419. 07 July 2006. Summary of changes for version 20060707:
  3420.  
  3421. 1) ACPI CA Core Subsystem:
  3422.  
  3423. Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
  3424. that do not allow the initialization of address pointers within packed
  3425. structures - even though the hardware itself may support misaligned
  3426. transfers. Some of the debug data structures are packed by default to
  3427. minimize size.
  3428.  
  3429. Added an error message for the case where AcpiOsGetThreadId() returns zero.
  3430. A non-zero value is required by the core ACPICA code to ensure the proper
  3431. operation of AML mutexes and recursive control methods.
  3432.  
  3433. The DSDT is now the only ACPI table that determines whether the AML
  3434. interpreter is in 32-bit or 64-bit mode. Not really a functional change, but
  3435. the hooks for per-table 32/64 switching have been removed from the code. A
  3436. clarification to the ACPI specification is forthcoming in ACPI 3.0B.
  3437.  
  3438. Fixed a possible leak of an OwnerID in the error path of
  3439. AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
  3440. deletion to a single place in AcpiTbUninstallTable to correct possible leaks
  3441. when using the AcpiTbDeleteTablesByType interface (with assistance from
  3442. Lance Ortiz.)
  3443.  
  3444. Fixed a problem with Serialized control methods where the semaphore
  3445. associated with the method could be over-signaled after multiple method
  3446. invocations.
  3447.  
  3448. Fixed two issues with the locking of the internal namespace data structure.
  3449. Both the Unload() operator and AcpiUnloadTable interface now lock the
  3450. namespace during the namespace deletion associated with the table unload
  3451. (with assistance from Linn Crosetto.)
  3452.  
  3453. Fixed problem reports (Valery Podrezov) integrated:
  3454. - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
  3455.  
  3456. Fixed problem reports (Fiodor Suietov) integrated:
  3457. - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
  3458. - On Address Space handler deletion, needless deactivation call (BZ 374)
  3459. - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375)
  3460. - Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone
  3461. (BZ 376)
  3462. - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
  3463. - Minimum Length of RSDT should be validated (BZ 379)
  3464. - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
  3465. Handler (BZ (380)
  3466. - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded
  3467. (BZ 381)
  3468.  
  3469. Example Code and Data Size: These are the sizes for the OS-independent
  3470. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3471. debug version of the code includes the debug output trace mechanism and has
  3472. a much larger code and data size.
  3473.  
  3474.   Previous Release:
  3475.     Non-Debug Version:  80.5K Code, 17.8K Data,  98.3K Total
  3476.     Debug Version:     160.8K Code, 64.8K Data, 225.6K Total
  3477.   Current Release:
  3478.     Non-Debug Version:  80.7K Code, 17.9K Data,  98.6K Total
  3479.     Debug Version:     161.0K Code, 65.1K Data, 226.1K Total
  3480.  
  3481.  
  3482. 2) iASL Compiler/Disassembler and Tools:
  3483.  
  3484. Fixed problem reports:
  3485. Compiler segfault when ASL contains a long (>1024) String declaration (BZ
  3486. 436)
  3487.  
  3488. ----------------------------------------
  3489. 23 June 2006. Summary of changes for version 20060623:
  3490.  
  3491. 1) ACPI CA Core Subsystem:
  3492.  
  3493. Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
  3494. allows the type to be customized to the host OS for improved efficiency
  3495. (since a spinlock is usually a very small object.)
  3496.  
  3497. Implemented support for "ignored" bits in the ACPI registers. According to
  3498. the ACPI specification, these bits should be preserved when writing the
  3499. registers via a read/modify/write cycle. There are 3 bits preserved in this
  3500. manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
  3501.  
  3502. Implemented the initial deployment of new OSL mutex interfaces. Since some
  3503. host operating systems have separate mutex and semaphore objects, this
  3504. feature was requested. The base code now uses mutexes (and the new mutex
  3505. interfaces) wherever a binary semaphore was used previously. However, for
  3506. the current release, the mutex interfaces are defined as macros to map them
  3507. to the existing semaphore interfaces. Therefore, no OSL changes are required
  3508. at this time. (See acpiosxf.h)
  3509.  
  3510. Fixed several problems with the support for the control method SyncLevel
  3511. parameter. The SyncLevel now works according to the ACPI specification and
  3512. in concert with the Mutex SyncLevel parameter, since the current SyncLevel
  3513. is a property of the executing thread. Mutual exclusion for control methods
  3514. is now implemented with a mutex instead of a semaphore.
  3515.  
  3516. Fixed three instances of the use of the C shift operator in the bitfield
  3517. support code (exfldio.c) to avoid the use of a shift value larger than the
  3518. target data width. The behavior of C compilers is undefined in this case and
  3519. can cause unpredictable results, and therefore the case must be detected and
  3520. avoided. (Fiodor Suietov)
  3521.  
  3522. Added an info message whenever an SSDT or OEM table is loaded dynamically
  3523. via the Load() or LoadTable() ASL operators. This should improve debugging
  3524. capability since it will show exactly what tables have been loaded (beyond
  3525. the tables present in the RSDT/XSDT.)
  3526.  
  3527. Example Code and Data Size: These are the sizes for the OS-independent
  3528. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3529. debug version of the code includes the debug output trace mechanism and has
  3530. a much larger code and data size.
  3531.  
  3532.   Previous Release:
  3533.     Non-Debug Version:  80.0K Code, 17.6K Data,  97.6K Total
  3534.     Debug Version:     160.2K Code, 64.7K Data, 224.9K Total
  3535.   Current Release:
  3536.     Non-Debug Version:  80.5K Code, 17.8K Data,  98.3K Total
  3537.     Debug Version:     160.8K Code, 64.8K Data, 225.6K Total
  3538.  
  3539.  
  3540. 2) iASL Compiler/Disassembler and Tools:
  3541.  
  3542. No changes for this release.
  3543.  
  3544. ----------------------------------------
  3545. 08 June 2006. Summary of changes for version 20060608:
  3546.  
  3547. 1) ACPI CA Core Subsystem:
  3548.  
  3549. Converted the locking mutex used for the ACPI hardware to a spinlock. This
  3550. change should eliminate all problems caused by attempting to acquire a
  3551. semaphore at interrupt level, and it means that all ACPICA external
  3552. interfaces that directly access the ACPI hardware can be safely called from
  3553. interrupt level. OSL code that implements the semaphore interfaces should be
  3554. able to eliminate any workarounds for being called at interrupt level.
  3555.  
  3556. Fixed a regression introduced in 20060526 where the ACPI device
  3557. initialization could be prematurely aborted with an AE_NOT_FOUND if a device
  3558. did not have an optional _INI method.
  3559.  
  3560. Fixed an IndexField issue where a write to the Data Register should be
  3561. limited in size to the AccessSize (width) of the IndexField itself. (BZ 433,
  3562. Fiodor Suietov)
  3563.  
  3564. Fixed problem reports (Valery Podrezov) integrated:
  3565. - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
  3566.  
  3567. Fixed problem reports (Fiodor Suietov) integrated:
  3568. - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
  3569.  
  3570. Removed four global mutexes that were obsolete and were no longer being
  3571. used.
  3572.  
  3573. Example Code and Data Size: These are the sizes for the OS-independent
  3574. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3575. debug version of the code includes the debug output trace mechanism and has
  3576. a much larger code and data size.
  3577.  
  3578.   Previous Release:
  3579.     Non-Debug Version:  80.0K Code, 17.7K Data,  97.7K Total
  3580.     Debug Version:     160.3K Code, 64.9K Data, 225.2K Total
  3581.   Current Release:
  3582.     Non-Debug Version:  80.0K Code, 17.6K Data,  97.6K Total
  3583.     Debug Version:     160.2K Code, 64.7K Data, 224.9K Total
  3584.  
  3585.  
  3586. 2) iASL Compiler/Disassembler and Tools:
  3587.  
  3588. Fixed a fault when using -g option (get tables from registry) on Windows
  3589. machines.
  3590.  
  3591. Fixed problem reports integrated:
  3592. - Generate error if CreateField NumBits parameter is zero. (BZ 405)
  3593. - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
  3594. Suietov)
  3595. - Global table revision override (-r) is ignored (BZ 413)
  3596.  
  3597. ----------------------------------------
  3598. 26 May 2006. Summary of changes for version 20060526:
  3599.  
  3600. 1) ACPI CA Core Subsystem:
  3601.  
  3602. Restructured, flattened, and simplified the internal interfaces for
  3603. namespace object evaluation - resulting in smaller code, less CPU stack use,
  3604. and fewer interfaces. (With assistance from Mikhail Kouzmich)
  3605.  
  3606. Fixed a problem with the CopyObject operator where the first parameter was
  3607. not typed correctly for the parser, interpreter, compiler, and disassembler.
  3608. Caused various errors and unexpected behavior.
  3609.  
  3610. Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
  3611. produced incorrect results with some C compilers. Since the behavior of C
  3612. compilers when the shift value is larger than the datatype width is
  3613. apparently not well defined, the interpreter now detects this condition and
  3614. simply returns zero as expected in all such cases. (BZ 395)
  3615.  
  3616. Fixed problem reports (Valery Podrezov) integrated:
  3617. - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
  3618. - Allow interpreter to handle nested method declarations (BZ 5361)
  3619.  
  3620. Fixed problem reports (Fiodor Suietov) integrated:
  3621. - AcpiTerminate doesn't free debug memory allocation list objects (BZ 355)
  3622. - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356)
  3623. - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
  3624. - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
  3625. - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
  3626. - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
  3627. - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
  3628. - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
  3629. - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365)
  3630. - Status of the Global Initialization Handler call not used (BZ 366)
  3631. - Incorrect object parameter to Global Initialization Handler (BZ 367)
  3632.  
  3633. Example Code and Data Size: These are the sizes for the OS-independent
  3634. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3635. debug version of the code includes the debug output trace mechanism and has
  3636. a much larger code and data size.
  3637.  
  3638.   Previous Release:
  3639.     Non-Debug Version:  79.8K Code, 17.7K Data,  97.5K Total
  3640.     Debug Version:     160.5K Code, 65.1K Data, 225.6K Total
  3641.   Current Release:
  3642.     Non-Debug Version:  80.0K Code, 17.7K Data,  97.7K Total
  3643.     Debug Version:     160.3K Code, 64.9K Data, 225.2K Total
  3644.  
  3645.  
  3646. 2) iASL Compiler/Disassembler and Tools:
  3647.  
  3648. Modified the parser to allow the names IO, DMA, and IRQ to be used as
  3649. namespace identifiers with no collision with existing resource descriptor
  3650. macro names. This provides compatibility with other ASL compilers and is
  3651. most useful for disassembly/recompilation of existing tables without parse
  3652. errors. (With assistance from Thomas Renninger)
  3653.  
  3654. Disassembler: fixed an incorrect disassembly problem with the
  3655. DataTableRegion and CopyObject operators. Fixed a possible fault during
  3656. disassembly of some Alias operators.
  3657.  
  3658. ----------------------------------------
  3659. 12 May 2006. Summary of changes for version 20060512:
  3660.  
  3661. 1) ACPI CA Core Subsystem:
  3662.  
  3663. Replaced the AcpiOsQueueForExecution interface with a new interface named
  3664. AcpiOsExecute. The major difference is that the new interface does not have
  3665. a Priority parameter, this appeared to be useless and has been replaced by a
  3666. Type parameter. The Type tells the host what type of execution is being
  3667. requested, such as global lock handler, notify handler, GPE handler, etc.
  3668. This allows the host to queue and execute the request as appropriate for the
  3669. request type, possibly using different work queues and different priorities
  3670. for the various request types. This enables fixes for multithreading
  3671. deadlock problems such as BZ #5534, and will require changes to all existing
  3672. OS interface layers. (Alexey Starikovskiy and Bob Moore)
  3673.  
  3674. Fixed a possible memory leak associated with the support for the so-called
  3675. "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
  3676. Suietov)
  3677.  
  3678. Fixed a problem with the Load() operator where a table load from an
  3679. operation region could overwrite an internal table buffer by up to 7 bytes
  3680. and cause alignment faults on IPF systems. (With assistance from Luming Yu)
  3681.  
  3682. Example Code and Data Size: These are the sizes for the OS-independent
  3683. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3684. debug version of the code includes the debug output trace mechanism and has
  3685. a much larger code and data size.
  3686.  
  3687.   Previous Release:
  3688.     Non-Debug Version:  79.7K Code, 17.7K Data,  97.4K Total
  3689.     Debug Version:     160.1K Code, 65.2K Data, 225.3K Total
  3690.   Current Release:
  3691.     Non-Debug Version:  79.8K Code, 17.7K Data,  97.5K Total
  3692.     Debug Version:     160.5K Code, 65.1K Data, 225.6K Total
  3693.  
  3694.  
  3695.  
  3696. 2) iASL Compiler/Disassembler and Tools:
  3697.  
  3698. Disassembler: Implemented support to cross reference the internal namespace
  3699. and automatically generate ASL External() statements for symbols not defined
  3700. within the current table being disassembled. This will simplify the
  3701. disassembly and recompilation of interdependent tables such as SSDTs since
  3702. these statements will no longer have to be added manually.
  3703.  
  3704. Disassembler: Implemented experimental support to automatically detect
  3705. invocations of external control methods and generate appropriate External()
  3706. statements. This is problematic because the AML cannot be correctly parsed
  3707. until the number of arguments for each control method is known. Currently,
  3708. standalone method invocations and invocations as the source operand of a
  3709. Store() statement are supported.
  3710.  
  3711. Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
  3712. LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
  3713. LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
  3714. more readable and likely closer to the original ASL source.
  3715.  
  3716. ----------------------------------------
  3717. 21 April 2006. Summary of changes for version 20060421:
  3718.  
  3719. 1) ACPI CA Core Subsystem:
  3720.  
  3721. Removed a device initialization optimization introduced in 20051216 where
  3722. the _STA method was not run unless an _INI was also present for the same
  3723. device. This optimization could cause problems because it could allow _INI
  3724. methods to be run within a not-present device subtree. (If a not-present
  3725. device had no _INI, _STA would not be run, the not-present status would not
  3726. be discovered, and the children of the device would be incorrectly
  3727. traversed.)
  3728.  
  3729. Implemented a new _STA optimization where namespace subtrees that do not
  3730. contain _INI are identified and ignored during device initialization.
  3731. Selectively running _STA can significantly improve boot time on large
  3732. machines (with assistance from Len Brown.)
  3733.  
  3734. Implemented support for the device initialization case where the returned
  3735. _STA flags indicate a device not-present but functioning. In this case, _INI
  3736. is not run, but the device children are examined for presence, as per the
  3737. ACPI specification.
  3738.  
  3739. Implemented an additional change to the IndexField support in order to
  3740. conform to MS behavior. The value written to the Index Register is not
  3741. simply a byte offset, it is a byte offset in units of the access width of
  3742. the parent Index Field. (Fiodor Suietov)
  3743.  
  3744. Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
  3745. interface is called during the creation of all AML operation regions, and
  3746. allows the host OS to exert control over what addresses it will allow the
  3747. AML code to access. Operation Regions whose addresses are disallowed will
  3748. cause a runtime exception when they are actually accessed (will not affect
  3749. or abort table loading.) See oswinxf or osunixxf for an example
  3750. implementation.
  3751.  
  3752. Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
  3753. interface allows the host OS to match the various "optional"
  3754. interface/behavior strings for the _OSI predefined control method as
  3755. appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
  3756. for an example implementation.
  3757.  
  3758. Restructured and corrected various problems in the exception handling code
  3759. paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
  3760. (with assistance from Takayoshi Kochi.)
  3761.  
  3762. Modified the Linux source converter to ignore quoted string literals while
  3763. converting identifiers from mixed to lower case. This will correct problems
  3764. with the disassembler and other areas where such strings must not be
  3765. modified.
  3766.  
  3767. The ACPI_FUNCTION_* macros no longer require quotes around the function
  3768. name. This allows the Linux source converter to convert the names, now that
  3769. the converter ignores quoted strings.
  3770.  
  3771. Example Code and Data Size: These are the sizes for the OS-independent
  3772. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3773. debug version of the code includes the debug output trace mechanism and has
  3774. a much larger code and data size.
  3775.  
  3776.   Previous Release:
  3777.  
  3778.     Non-Debug Version:  81.1K Code, 17.7K Data,  98.8K Total
  3779.     Debug Version:     158.9K Code, 64.9K Data, 223.8K Total
  3780.   Current Release:
  3781.     Non-Debug Version:  79.7K Code, 17.7K Data,  97.4K Total
  3782.     Debug Version:     160.1K Code, 65.2K Data, 225.3K Total
  3783.  
  3784.  
  3785. 2) iASL Compiler/Disassembler and Tools:
  3786.  
  3787. Implemented 3 new warnings for iASL, and implemented multiple warning levels
  3788. (w2 flag).
  3789.  
  3790. 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not
  3791. WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
  3792. check for the possible timeout, a warning is issued.
  3793.  
  3794. 2) Useless operators: If an ASL operator does not specify an optional target
  3795. operand and it also does not use the function return value from the
  3796. operator, a warning is issued since the operator effectively does nothing.
  3797.  
  3798. 3) Unreferenced objects: If a namespace object is created, but never
  3799. referenced, a warning is issued. This is a warning level 2 since there are
  3800. cases where this is ok, such as when a secondary table is loaded that uses
  3801. the unreferenced objects. Even so, care is taken to only flag objects that
  3802. don't look like they will ever be used. For example, the reserved methods
  3803. (starting with an underscore) are usually not referenced because it is
  3804. expected that the OS will invoke them.
  3805.  
  3806. ----------------------------------------
  3807. 31 March 2006. Summary of changes for version 20060331:
  3808.  
  3809. 1) ACPI CA Core Subsystem:
  3810.  
  3811. Implemented header file support for the following additional ACPI tables:
  3812. ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support,
  3813. all current and known ACPI tables are now defined in the ACPICA headers and
  3814. are available for use by device drivers and other software.
  3815.  
  3816. Implemented support to allow tables that contain ACPI names with invalid
  3817. characters to be loaded. Previously, this would cause the table load to
  3818. fail, but since there are several known cases of such tables on existing
  3819. machines, this change was made to enable ACPI support for them. Also, this
  3820. matches the behavior of the Microsoft ACPI implementation.
  3821.  
  3822. Fixed a couple regressions introduced during the memory optimization in the
  3823. 20060317 release. The namespace node definition required additional
  3824. reorganization and an internal datatype that had been changed to 8-bit was
  3825. restored to 32-bit. (Valery Podrezov)
  3826.  
  3827. Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
  3828. could be passed through to AcpiOsReleaseObject which is unexpected. Such
  3829. null pointers are now trapped and ignored, matching the behavior of the
  3830. previous implementation before the deployment of AcpiOsReleaseObject.
  3831. (Valery Podrezov, Fiodor Suietov)
  3832.  
  3833. Fixed a memory mapping leak during the deletion of a SystemMemory operation
  3834. region where a cached memory mapping was not deleted. This became a
  3835. noticeable problem for operation regions that are defined within frequently
  3836. used control methods. (Dana Meyers)
  3837.  
  3838. Reorganized the ACPI table header files into two main files: one for the
  3839. ACPI tables consumed by the ACPICA core, and another for the miscellaneous
  3840. ACPI tables that are consumed by the drivers and other software. The various
  3841. FADT definitions were merged into one common section and three different
  3842. tables (ACPI 1.0, 1.0+, and 2.0)
  3843.  
  3844. Example Code and Data Size: These are the sizes for the OS-independent
  3845. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
  3846. debug version of the code includes the debug output trace mechanism and has
  3847. a much larger code and data size.
  3848.  
  3849.   Previous Release:
  3850.     Non-Debug Version:  80.9K Code, 17.7K Data,  98.6K Total
  3851.     Debug Version:     158.7K Code, 64.8K Data, 223.5K Total
  3852.   Current Release:
  3853.     Non-Debug Version:  81.1K Code, 17.7K Data,  98.8K Total
  3854.     Debug Version:     158.9K Code, 64.9K Data, 223.8K Total
  3855.  
  3856.  
  3857. 2) iASL Compiler/Disassembler and Tools:
  3858.  
  3859. Disassembler: Implemented support to decode and format all non-AML ACPI
  3860. tables (tables other than DSDTs and SSDTs.) This includes the new tables
  3861. added to the ACPICA headers, therefore all current and known ACPI tables are
  3862. supported.
  3863.  
  3864. Disassembler: The change to allow ACPI names with invalid characters also
  3865. enables the disassembly of such tables. Invalid characters within names are
  3866. changed to '*' to make the name printable; the iASL compiler will still
  3867. generate an error for such names, however, since this is an invalid ACPI
  3868. character.
  3869.  
  3870. Implemented an option for AcpiXtract (-a) to extract all tables found in the
  3871. input file. The default invocation extracts only the DSDTs and SSDTs.
  3872.  
  3873. Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
  3874. makefile for the AcpiXtract utility.
  3875.  
  3876. ----------------------------------------
  3877. 17 March 2006. Summary of changes for version 20060317:
  3878.  
  3879. 1) ACPI CA Core Subsystem:
  3880.  
  3881. Implemented the use of a cache object for all internal namespace nodes.
  3882. Since there are about 1000 static nodes in a typical system, this will
  3883. decrease memory use for cache implementations that minimize per-allocation
  3884. overhead (such as a slab allocator.)
  3885.  
  3886. Removed the reference count mechanism for internal namespace nodes, since it
  3887. was deemed unnecessary. This reduces the size of each namespace node by
  3888. about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case,
  3889. and 32 bytes for the 64-bit case.
  3890.  
  3891. Optimized several internal data structures to reduce object size on 64-bit
  3892. platforms by packing data within the 64-bit alignment. This includes the
  3893. frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
  3894. instances corresponding to the namespace objects.
  3895.  
  3896. Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1"
  3897. and "Windows 2006".
  3898.  
  3899. Split the allocation tracking mechanism out to a separate file, from
  3900. utalloc.c to uttrack.c. This mechanism appears to be only useful for
  3901. application-level code. Kernels may wish to not include uttrack.c in
  3902. distributions.
  3903.  
  3904. Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated
  3905. code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
  3906. macros.)
  3907.  
  3908. Code and Data Size: These are the sizes for the acpica.lib produced by the
  3909. Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
  3910. driver or OSPM code. The debug version of the code includes the debug output
  3911. trace mechanism and has a much larger code and data size. Note that these
  3912. values will vary depending on the efficiency of the compiler and the
  3913. compiler options used during generation.
  3914.  
  3915.   Previous Release:
  3916.     Non-Debug Version:  81.1K Code, 17.8K Data,  98.9K Total
  3917.     Debug Version:     161.6K Code, 65.7K Data, 227.3K Total
  3918.   Current Release:
  3919.     Non-Debug Version:  80.9K Code, 17.7K Data,  98.6K Total
  3920.     Debug Version:     158.7K Code, 64.8K Data, 223.5K Total
  3921.  
  3922.  
  3923. 2) iASL Compiler/Disassembler and Tools:
  3924.  
  3925. Implemented an ANSI C version of the acpixtract utility. This version will
  3926. automatically extract the DSDT and all SSDTs from the input acpidump text
  3927. file and dump the binary output to separate files. It can also display a
  3928. summary of the input file including the headers for each table found and
  3929. will extract any single ACPI table, with any signature. (See
  3930. source/tools/acpixtract)
  3931.  
  3932. ----------------------------------------
  3933. 10 March 2006. Summary of changes for version 20060310:
  3934.  
  3935. 1) ACPI CA Core Subsystem:
  3936.  
  3937. Tagged all external interfaces to the subsystem with the new
  3938. ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist
  3939. kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
  3940. macro. The default definition is NULL.
  3941.  
  3942. Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId.
  3943. This allows the host to define this as necessary to simplify kernel
  3944. integration. The default definition is ACPI_NATIVE_UINT.
  3945.  
  3946. Fixed two interpreter problems related to error processing, the deletion of
  3947. objects, and placing invalid pointers onto the internal operator result
  3948. stack. BZ 6028, 6151 (Valery Podrezov)
  3949.  
  3950. Increased the reference count threshold where a warning is emitted for large
  3951. reference counts in order to eliminate unnecessary warnings on systems with
  3952. large namespaces (especially 64-bit.) Increased the value from 0x400 to
  3953. 0x800.
  3954.  
  3955. Due to universal disagreement as to the meaning of the 'c' in the calloc()
  3956. function, the ACPI_MEM_CALLOCATE macro has been renamed to
  3957. ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
  3958. ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
  3959. ACPI_FREE.
  3960.  
  3961. Code and Data Size: These are the sizes for the acpica.lib produced by the
  3962. Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
  3963. driver or OSPM code. The debug version of the code includes the debug output
  3964. trace mechanism and has a much larger code and data size. Note that these
  3965. values will vary depending on the efficiency of the compiler and the
  3966. compiler options used during generation.
  3967.  
  3968.   Previous Release:
  3969.     Non-Debug Version:  81.0K Code, 17.8K Data,  98.8K Total
  3970.     Debug Version:     161.4K Code, 65.7K Data, 227.1K Total
  3971.   Current Release:
  3972.     Non-Debug Version:  81.1K Code, 17.8K Data,  98.9K Total
  3973.     Debug Version:     161.6K Code, 65.7K Data, 227.3K Total
  3974.  
  3975.  
  3976. 2) iASL Compiler/Disassembler:
  3977.  
  3978. Disassembler: implemented support for symbolic resource descriptor
  3979. references. If a CreateXxxxField operator references a fixed offset within a
  3980. resource descriptor, a name is assigned to the descriptor and the offset is
  3981. translated to the appropriate resource tag and pathname. The addition of
  3982. this support brings the disassembled code very close to the original ASL
  3983. source code and helps eliminate run-time errors when the disassembled code
  3984. is modified (and recompiled) in such a way as to invalidate the original
  3985. fixed offsets.
  3986.  
  3987. Implemented support for a Descriptor Name as the last parameter to the ASL
  3988. Register() macro. This parameter was inadvertently left out of the ACPI
  3989. specification, and will be added for ACPI 3.0b.
  3990.  
  3991. Fixed a problem where the use of the "_OSI" string (versus the full path
  3992. "\_OSI") caused an internal compiler error. ("No back ptr to op")
  3993.  
  3994. Fixed a problem with the error message that occurs when an invalid string is
  3995. used for a _HID object (such as one with an embedded asterisk: "*PNP010A".)
  3996. The correct message is now displayed.
  3997.  
  3998. ----------------------------------------
  3999. 17 February 2006. Summary of changes for version 20060217:
  4000.  
  4001. 1) ACPI CA Core Subsystem:
  4002.  
  4003. Implemented a change to the IndexField support to match the behavior of the
  4004. Microsoft AML interpreter. The value written to the Index register is now a
  4005. byte offset, no longer an index based upon the width of the Data register.
  4006. This should fix IndexField problems seen on some machines where the Data
  4007. register is not exactly one byte wide. The ACPI specification will be
  4008. clarified on this point.
  4009.  
  4010. Fixed a problem where several resource descriptor types could overrun the
  4011. internal descriptor buffer due to size miscalculation: VendorShort,
  4012. VendorLong, and Interrupt. This was noticed on IA64 machines, but could
  4013. affect all platforms.
  4014.  
  4015. Fixed a problem where individual resource descriptors were misaligned within
  4016. the internal buffer, causing alignment faults on IA64 platforms.
  4017.  
  4018. Code and Data Size: These are the sizes for the acpica.lib produced by the
  4019. Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
  4020. driver or OSPM code. The debug version of the code includes the debug output
  4021. trace mechanism and has a much larger code and data size. Note that these
  4022. values will vary depending on the efficiency of the compiler and the
  4023. compiler options used during generation.
  4024.  
  4025.   Previous Release:
  4026.     Non-Debug Version:  81.1K Code, 17.8K Data,  98.9K Total
  4027.     Debug Version:     161.3K Code, 65.6K Data, 226.9K Total
  4028.   Current Release:
  4029.     Non-Debug Version:  81.0K Code, 17.8K Data,  98.8K Total
  4030.     Debug Version:     161.4K Code, 65.7K Data, 227.1K Total
  4031.  
  4032.  
  4033. 2) iASL Compiler/Disassembler:
  4034.  
  4035. Implemented support for new reserved names: _WDG and _WED are Microsoft
  4036. extensions for Windows Instrumentation Management, _TDL is a new ACPI-
  4037. defined method (Throttling Depth Limit.)
  4038.  
  4039. Fixed a problem where a zero-length VendorShort or VendorLong resource
  4040. descriptor was incorrectly emitted as a descriptor of length one.
  4041.  
  4042. ----------------------------------------
  4043. 10 February 2006. Summary of changes for version 20060210:
  4044.  
  4045. 1) ACPI CA Core Subsystem:
  4046.  
  4047. Removed a couple of extraneous ACPI_ERROR messages that appeared during
  4048. normal execution. These became apparent after the conversion from
  4049. ACPI_DEBUG_PRINT.
  4050.  
  4051. Fixed a problem where the CreateField operator could hang if the BitIndex or
  4052. NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
  4053.  
  4054. Fixed a problem where a DeRefOf operation on a buffer object incorrectly
  4055. failed with an exception. This also fixes a couple of related RefOf and
  4056. DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
  4057.  
  4058. Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of
  4059. AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ
  4060. 5480)
  4061.  
  4062. Implemented a memory cleanup at the end of the execution of each iteration
  4063. of an AML While() loop, preventing the accumulation of outstanding objects.
  4064. (Valery Podrezov, BZ 5427)
  4065.  
  4066. Eliminated a chunk of duplicate code in the object resolution code. (Valery
  4067. Podrezov, BZ 5336)
  4068.  
  4069. Fixed several warnings during the 64-bit code generation.
  4070.  
  4071. The AcpiSrc source code conversion tool now inserts one line of whitespace
  4072. after an if() statement that is followed immediately by a comment, improving
  4073. readability of the Linux code.
  4074.  
  4075. Code and Data Size: The current and previous library sizes for the core
  4076. subsystem are shown below. These are the code and data sizes for the
  4077. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4078. values do not include any ACPI driver or OSPM code. The debug version of the
  4079. code includes the debug output trace mechanism and has a much larger code
  4080. and data size. Note that these values will vary depending on the efficiency
  4081. of the compiler and the compiler options used during generation.
  4082.  
  4083.   Previous Release:
  4084.     Non-Debug Version:  81.0K Code, 17.9K Data,  98.9K Total
  4085.     Debug Version:     161.3K Code, 65.7K Data, 227.0K Total
  4086.   Current Release:
  4087.     Non-Debug Version:  81.1K Code, 17.8K Data,  98.9K Total
  4088.     Debug Version:     161.3K Code, 65.6K Data, 226.9K Total
  4089.  
  4090.  
  4091. 2) iASL Compiler/Disassembler:
  4092.  
  4093. Fixed a problem with the disassembly of a BankField operator with a complex
  4094. expression for the BankValue parameter.
  4095.  
  4096. ----------------------------------------
  4097. 27 January 2006. Summary of changes for version 20060127:
  4098.  
  4099. 1) ACPI CA Core Subsystem:
  4100.  
  4101. Implemented support in the Resource Manager to allow unresolved namestring
  4102. references within resource package objects for the _PRT method. This support
  4103. is in addition to the previously implemented unresolved reference support
  4104. within the AML parser. If the interpreter slack mode is enabled, these
  4105. unresolved references will be passed through to the caller as a NULL package
  4106. entry.
  4107.  
  4108. Implemented and deployed new macros and functions for error and warning
  4109. messages across the subsystem. These macros are simpler and generate less
  4110. code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
  4111. ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
  4112. macros remain defined to allow ACPI drivers time to migrate to the new
  4113. macros.
  4114.  
  4115. Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the
  4116. Acquire/Release Lock OSL interfaces.
  4117.  
  4118. Fixed a problem where Alias ASL operators are sometimes not correctly
  4119. resolved, in both the interpreter and the iASL compiler.
  4120.  
  4121. Fixed several problems with the implementation of the ConcatenateResTemplate
  4122. ASL operator. As per the ACPI specification, zero length buffers are now
  4123. treated as a single EndTag. One-length buffers always cause a fatal
  4124. exception. Non-zero length buffers that do not end with a full 2-byte EndTag
  4125. cause a fatal exception.
  4126.  
  4127. Fixed a possible structure overwrite in the AcpiGetObjectInfo external
  4128. interface. (With assistance from Thomas Renninger)
  4129.  
  4130. Code and Data Size: The current and previous library sizes for the core
  4131. subsystem are shown below. These are the code and data sizes for the
  4132. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4133. values do not include any ACPI driver or OSPM code. The debug version of the
  4134. code includes the debug output trace mechanism and has a much larger code
  4135. and data size. Note that these values will vary depending on the efficiency
  4136. of the compiler and the compiler options used during generation.
  4137.  
  4138.   Previous Release:
  4139.     Non-Debug Version:  83.1K Code, 18.4K Data, 101.5K Total
  4140.     Debug Version:     163.2K Code, 66.2K Data, 229.4K Total
  4141.   Current Release:
  4142.     Non-Debug Version:  81.0K Code, 17.9K Data,  98.9K Total
  4143.     Debug Version:     161.3K Code, 65.7K Data, 227.0K Total
  4144.  
  4145.  
  4146. 2) iASL Compiler/Disassembler:
  4147.  
  4148. Fixed an internal error that was generated for any forward references to ASL
  4149. Alias objects.
  4150.  
  4151. ----------------------------------------
  4152. 13 January 2006. Summary of changes for version 20060113:
  4153.  
  4154. 1) ACPI CA Core Subsystem:
  4155.  
  4156. Added 2006 copyright to all module headers and signons. This affects
  4157. virtually every file in the ACPICA core subsystem, iASL compiler, and the
  4158. utilities.
  4159.  
  4160. Enhanced the ACPICA error reporting in order to simplify user migration to
  4161. the non-debug version of ACPICA. Replaced all instances of the
  4162. ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug
  4163. levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
  4164. respectively. This preserves all error and warning messages in the non-debug
  4165. version of the ACPICA code (this has been referred to as the "debug lite"
  4166. option.) Over 200 cases were converted to create a total of over 380
  4167. error/warning messages across the ACPICA code. This increases the code and
  4168. data size of the default non-debug version of the code somewhat (about 13K),
  4169. but all error/warning reporting may be disabled if desired (and code
  4170. eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
  4171. configuration option. The size of the debug version of ACPICA remains about
  4172. the same.
  4173.  
  4174. Fixed a memory leak within the AML Debugger "Set" command. One object was
  4175. not properly deleted for every successful invocation of the command.
  4176.  
  4177. Code and Data Size: The current and previous library sizes for the core
  4178. subsystem are shown below. These are the code and data sizes for the
  4179. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4180. values do not include any ACPI driver or OSPM code. The debug version of the
  4181. code includes the debug output trace mechanism and has a much larger code
  4182. and data size. Note that these values will vary depending on the efficiency
  4183. of the compiler and the compiler options used during generation.
  4184.  
  4185.   Previous Release:
  4186.     Non-Debug Version:  76.6K Code, 12.3K Data,  88.9K Total
  4187.     Debug Version:     163.7K Code, 67.5K Data, 231.2K Total
  4188.   Current Release:
  4189.     Non-Debug Version:  83.1K Code, 18.4K Data, 101.5K Total
  4190.     Debug Version:     163.2K Code, 66.2K Data, 229.4K Total
  4191.  
  4192.  
  4193. 2) iASL Compiler/Disassembler:
  4194.  
  4195. The compiler now officially supports the ACPI 3.0a specification that was
  4196. released on December 30, 2005. (Specification is available at www.acpi.info)
  4197.  
  4198. ----------------------------------------
  4199. 16 December 2005. Summary of changes for version 20051216:
  4200.  
  4201. 1) ACPI CA Core Subsystem:
  4202.  
  4203. Implemented optional support to allow unresolved names within ASL Package
  4204. objects. A null object is inserted in the package when a named reference
  4205. cannot be located in the current namespace. Enabled via the interpreter
  4206. slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines
  4207. that contain such code.
  4208.  
  4209. Implemented an optimization to the initialization sequence that can improve
  4210. boot time. During ACPI device initialization, the _STA method is now run if
  4211. and only if the _INI method exists. The _STA method is used to determine if
  4212. the device is present; An _INI can only be run if _STA returns present, but
  4213. it is a waste of time to run the _STA method if the _INI does not exist.
  4214. (Prototype and assistance from Dong Wei)
  4215.  
  4216. Implemented use of the C99 uintptr_t for the pointer casting macros if it is
  4217. available in the current compiler. Otherwise, the default (void *) cast is
  4218. used as before.
  4219.  
  4220. Fixed some possible memory leaks found within the execution path of the
  4221. Break, Continue, If, and CreateField operators. (Valery Podrezov)
  4222.  
  4223. Fixed a problem introduced in the 20051202 release where an exception is
  4224. generated during method execution if a control method attempts to declare
  4225. another method.
  4226.  
  4227. Moved resource descriptor string constants that are used by both the AML
  4228. disassembler and AML debugger to the common utilities directory so that
  4229. these components are independent.
  4230.  
  4231. Implemented support in the AcpiExec utility (-e switch) to globally ignore
  4232. exceptions during control method execution (method is not aborted.)
  4233.  
  4234. Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
  4235. generation.
  4236.  
  4237. Code and Data Size: The current and previous library sizes for the core
  4238. subsystem are shown below. These are the code and data sizes for the
  4239. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4240. values do not include any ACPI driver or OSPM code. The debug version of the
  4241. code includes the debug output trace mechanism and has a much larger code
  4242. and data size. Note that these values will vary depending on the efficiency
  4243. of the compiler and the compiler options used during generation.
  4244.  
  4245.   Previous Release:
  4246.     Non-Debug Version:  76.3K Code, 12.3K Data,  88.6K Total
  4247.     Debug Version:     163.2K Code, 67.4K Data, 230.6K Total
  4248.   Current Release:
  4249.     Non-Debug Version:  76.6K Code, 12.3K Data,  88.9K Total
  4250.     Debug Version:     163.7K Code, 67.5K Data, 231.2K Total
  4251.  
  4252.  
  4253. 2) iASL Compiler/Disassembler:
  4254.  
  4255. Fixed a problem where a CPU stack overflow fault could occur if a recursive
  4256. method call was made from within a Return statement.
  4257.  
  4258. ----------------------------------------
  4259. 02 December 2005. Summary of changes for version 20051202:
  4260.  
  4261. 1) ACPI CA Core Subsystem:
  4262.  
  4263. Modified the parsing of control methods to no longer create namespace
  4264. objects during the first pass of the parse. Objects are now created only
  4265. during the execute phase, at the moment the namespace creation operator is
  4266. encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This
  4267. should eliminate ALREADY_EXISTS exceptions seen on some machines where
  4268. reentrant control methods are protected by an AML mutex. The mutex will now
  4269. correctly block multiple threads from attempting to create the same object
  4270. more than once.
  4271.  
  4272. Increased the number of available Owner Ids for namespace object tracking
  4273. from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on
  4274. some machines with a large number of ACPI tables (either static or dynamic).
  4275.  
  4276. Fixed a problem with the AcpiExec utility where a fault could occur when the
  4277. -b switch (batch mode) is used.
  4278.  
  4279. Enhanced the namespace dump routine to output the owner ID for each
  4280. namespace object.
  4281.  
  4282. Code and Data Size: The current and previous library sizes for the core
  4283. subsystem are shown below. These are the code and data sizes for the
  4284. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4285. values do not include any ACPI driver or OSPM code. The debug version of the
  4286. code includes the debug output trace mechanism and has a much larger code
  4287. and data size. Note that these values will vary depending on the efficiency
  4288. of the compiler and the compiler options used during generation.
  4289.  
  4290.   Previous Release:
  4291.     Non-Debug Version:  76.3K Code, 12.3K Data,  88.6K Total
  4292.     Debug Version:     163.0K Code, 67.4K Data, 230.4K Total
  4293.   Current Release:
  4294.     Non-Debug Version:  76.3K Code, 12.3K Data,  88.6K Total
  4295.     Debug Version:     163.2K Code, 67.4K Data, 230.6K Total
  4296.  
  4297.  
  4298. 2) iASL Compiler/Disassembler:
  4299.  
  4300. Fixed a parse error during compilation of certain Switch/Case constructs. To
  4301. simplify the parse, the grammar now allows for multiple Default statements
  4302. and this error is now detected and flagged during the analysis phase.
  4303.  
  4304. Disassembler: The disassembly now includes the contents of the original
  4305. table header within a comment at the start of the file. This includes the
  4306. name and version of the original ASL compiler.
  4307.  
  4308. ----------------------------------------
  4309. 17 November 2005. Summary of changes for version 20051117:
  4310.  
  4311. 1) ACPI CA Core Subsystem:
  4312.  
  4313. Fixed a problem in the AML parser where the method thread count could be
  4314. decremented below zero if any errors occurred during the method parse phase.
  4315. This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines.
  4316. This also fixed a related regression with the mechanism that detects and
  4317. corrects methods that cannot properly handle reentrancy (related to the
  4318. deployment of the new OwnerId mechanism.)
  4319.  
  4320. Eliminated the pre-parsing of control methods (to detect errors) during
  4321. table load. Related to the problem above, this was causing unwind issues if
  4322. any errors occurred during the parse, and it seemed to be overkill. A table
  4323. load should not be aborted if there are problems with any single control
  4324. method, thus rendering this feature rather pointless.
  4325.  
  4326. Fixed a problem with the new table-driven resource manager where an internal
  4327. buffer overflow could occur for small resource templates.
  4328.  
  4329. Implemented a new external interface, AcpiGetVendorResource. This interface
  4330. will find and return a vendor-defined resource descriptor within a _CRS or
  4331. _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas.
  4332.  
  4333. Removed the length limit (200) on string objects as per the upcoming ACPI
  4334. 3.0A specification. This affects the following areas of the interpreter: 1)
  4335. any implicit conversion of a Buffer to a String, 2) a String object result
  4336. of the ASL Concatentate operator, 3) the String object result of the ASL
  4337. ToString operator.
  4338.  
  4339. Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER
  4340. on a semaphore object would incorrectly timeout. This allows the
  4341. multithreading features of the AcpiExec utility to work properly under
  4342. Windows.
  4343.  
  4344. Updated the Linux makefiles for the iASL compiler and AcpiExec to include
  4345. the recently added file named "utresrc.c".
  4346.  
  4347. Code and Data Size: The current and previous library sizes for the core
  4348. subsystem are shown below. These are the code and data sizes for the
  4349. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4350. values do not include any ACPI driver or OSPM code. The debug version of the
  4351. code includes the debug output trace mechanism and has a much larger code
  4352. and data size. Note that these values will vary depending on the efficiency
  4353. of the compiler and the compiler options used during generation.
  4354.  
  4355.   Previous Release:
  4356.     Non-Debug Version:  76.2K Code, 12.3K Data,  88.5K Total
  4357.     Debug Version:     163.0K Code, 67.4K Data, 230.4K Total
  4358.   Current Release:
  4359.     Non-Debug Version:  76.3K Code, 12.3K Data,  88.6K Total
  4360.     Debug Version:     163.0K Code, 67.4K Data, 230.4K Total
  4361.  
  4362.  
  4363. 2) iASL Compiler/Disassembler:
  4364.  
  4365. Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
  4366. specification. For the iASL compiler, this means that string literals within
  4367. the source ASL can be of any length.
  4368.  
  4369. Enhanced the listing output to dump the AML code for resource descriptors
  4370. immediately after the ASL code for each descriptor, instead of in a block at
  4371. the end of the entire resource template.
  4372.  
  4373. Enhanced the compiler debug output to dump the entire original parse tree
  4374. constructed during the parse phase, before any transforms are applied to the
  4375. tree. The transformed tree is dumped also.
  4376.  
  4377. ----------------------------------------
  4378. 02 November 2005. Summary of changes for version 20051102:
  4379.  
  4380. 1) ACPI CA Core Subsystem:
  4381.  
  4382. Modified the subsystem initialization sequence to improve GPE support. The
  4383. GPE initialization has been split into two parts in order to defer execution
  4384. of the _PRW methods (Power Resources for Wake) until after the hardware is
  4385. fully initialized and the SCI handler is installed. This allows the _PRW
  4386. methods to access fields protected by the Global Lock. This will fix systems
  4387. where a NO_GLOBAL_LOCK exception has been seen during initialization.
  4388.  
  4389. Converted the ACPI internal object disassemble and display code within the
  4390. AML debugger to fully table-driven operation, reducing code size and
  4391. increasing maintainability.
  4392.  
  4393. Fixed a regression with the ConcatenateResTemplate() ASL operator introduced
  4394. in the 20051021 release.
  4395.  
  4396. Implemented support for "local" internal ACPI object types within the
  4397. debugger "Object" command and the AcpiWalkNamespace external interfaces.
  4398. These local types include RegionFields, BankFields, IndexFields, Alias, and
  4399. reference objects.
  4400.  
  4401. Moved common AML resource handling code into a new file, "utresrc.c". This
  4402. code is shared by both the Resource Manager and the AML Debugger.
  4403.  
  4404. Code and Data Size: The current and previous library sizes for the core
  4405. subsystem are shown below. These are the code and data sizes for the
  4406. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4407. values do not include any ACPI driver or OSPM code. The debug version of the
  4408. code includes the debug output trace mechanism and has a much larger code
  4409. and data size. Note that these values will vary depending on the efficiency
  4410. of the compiler and the compiler options used during generation.
  4411.  
  4412.   Previous Release:
  4413.     Non-Debug Version:  76.1K Code, 12.2K Data,  88.3K Total
  4414.     Debug Version:     163.5K Code, 67.0K Data, 230.5K Total
  4415.   Current Release:
  4416.     Non-Debug Version:  76.2K Code, 12.3K Data,  88.5K Total
  4417.     Debug Version:     163.0K Code, 67.4K Data, 230.4K Total
  4418.  
  4419.  
  4420. 2) iASL Compiler/Disassembler:
  4421.  
  4422. Fixed a problem with very large initializer lists (more than 4000 elements)
  4423. for both Buffer and Package objects where the parse stack could overflow.
  4424.  
  4425. Enhanced the pre-compile source code scan for non-ASCII characters to ignore
  4426. characters within comment fields. The scan is now always performed and is no
  4427. longer optional, detecting invalid characters within a source file
  4428. immediately rather than during the parse phase or later.
  4429.  
  4430. Enhanced the ASL grammar definition to force early reductions on all list-
  4431. style grammar elements so that the overall parse stack usage is greatly
  4432. reduced. This should improve performance and reduce the possibility of parse
  4433. stack overflow.
  4434.  
  4435. Eliminated all reduce/reduce conflicts in the iASL parser generation. Also,
  4436. with the addition of a %expected statement, the compiler generates from
  4437. source with no warnings.
  4438.  
  4439. Fixed a possible segment fault in the disassembler if the input filename
  4440. does not contain a "dot" extension (Thomas Renninger).
  4441.  
  4442. ----------------------------------------
  4443. 21 October 2005. Summary of changes for version 20051021:
  4444.  
  4445. 1) ACPI CA Core Subsystem:
  4446.  
  4447. Implemented support for the EM64T and other x86-64 processors. This
  4448. essentially entails recognizing that these processors support non-aligned
  4449. memory transfers. Previously, all 64-bit processors were assumed to lack
  4450. hardware support for non-aligned transfers.
  4451.  
  4452. Completed conversion of the Resource Manager to nearly full table-driven
  4453. operation. Specifically, the resource conversion code (convert AML to
  4454. internal format and the reverse) and the debug code to dump internal
  4455. resource descriptors are fully table-driven, reducing code and data size and
  4456. improving maintainability.
  4457.  
  4458. The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word
  4459. on 64-bit processors instead of a fixed 32-bit word. (With assistance from
  4460. Alexey Starikovskiy)
  4461.  
  4462. Implemented support within the resource conversion code for the Type-
  4463. Specific byte within the various ACPI 3.0 *WordSpace macros.
  4464.  
  4465. Fixed some issues within the resource conversion code for the type-specific
  4466. flags for both Memory and I/O address resource descriptors. For Memory,
  4467. implemented support for the MTP and TTP flags. For I/O, split the TRS and
  4468. TTP flags into two separate fields.
  4469.  
  4470. Code and Data Size: The current and previous library sizes for the core
  4471. subsystem are shown below. These are the code and data sizes for the
  4472. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4473. values do not include any ACPI driver or OSPM code. The debug version of the
  4474. code includes the debug output trace mechanism and has a much larger code
  4475. and data size. Note that these values will vary depending on the efficiency
  4476. of the compiler and the compiler options used during generation.
  4477.  
  4478.   Previous Release:
  4479.     Non-Debug Version:  77.1K Code, 12.1K Data,  89.2K Total
  4480.     Debug Version:     168.0K Code, 68.3K Data, 236.3K Total
  4481.   Current Release:
  4482.     Non-Debug Version:  76.1K Code, 12.2K Data,  88.3K Total
  4483.     Debug Version:     163.5K Code, 67.0K Data, 230.5K Total
  4484.  
  4485.  
  4486.  
  4487. 2) iASL Compiler/Disassembler:
  4488.  
  4489. Relaxed a compiler restriction that disallowed a ResourceIndex byte if the
  4490. corresponding ResourceSource string was not also present in a resource
  4491. descriptor declaration. This restriction caused problems with existing
  4492. AML/ASL code that includes the Index byte without the string. When such AML
  4493. was disassembled, it could not be compiled without modification. Further,
  4494. the modified code created a resource template with a different size than the
  4495. original, breaking code that used fixed offsets into the resource template
  4496. buffer.
  4497.  
  4498. Removed a recent feature of the disassembler to ignore a lone ResourceIndex
  4499. byte. This byte is now emitted if present so that the exact AML can be
  4500. reproduced when the disassembled code is recompiled.
  4501.  
  4502. Improved comments and text alignment for the resource descriptor code
  4503. emitted by the disassembler.
  4504.  
  4505. Implemented disassembler support for the ACPI 3.0 AccessSize field within a
  4506. Register() resource descriptor.
  4507.  
  4508. ----------------------------------------
  4509. 30 September 2005. Summary of changes for version 20050930:
  4510.  
  4511. 1) ACPI CA Core Subsystem:
  4512.  
  4513. Completed a major overhaul of the Resource Manager code - specifically,
  4514. optimizations in the area of the AML/internal resource conversion code. The
  4515. code has been optimized to simplify and eliminate duplicated code, CPU stack
  4516. use has been decreased by optimizing function parameters and local
  4517. variables, and naming conventions across the manager have been standardized
  4518. for clarity and ease of maintenance (this includes function, parameter,
  4519. variable, and struct/typedef names.) The update may force changes in some
  4520. driver code, depending on how resources are handled by the host OS.
  4521.  
  4522. All Resource Manager dispatch and information tables have been moved to a
  4523. single location for clarity and ease of maintenance. One new file was
  4524. created, named "rsinfo.c".
  4525.  
  4526. The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
  4527. guarantee that the argument is not evaluated twice, making them less prone
  4528. to macro side-effects. However, since there exists the possibility of
  4529. additional stack use if a particular compiler cannot optimize them (such as
  4530. in the debug generation case), the original macros are optionally available.  
  4531. Note that some invocations of the return_VALUE macro may now cause size
  4532. mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to
  4533. eliminate these. (From Randy Dunlap)
  4534.  
  4535. Implemented a new mechanism to enable debug tracing for individual control
  4536. methods. A new external interface, AcpiDebugTrace, is provided to enable
  4537. this mechanism. The intent is to allow the host OS to easily enable and
  4538. disable tracing for problematic control methods. This interface can be
  4539. easily exposed to a user or debugger interface if desired. See the file
  4540. psxface.c for details.
  4541.  
  4542. AcpiUtCallocate will now return a valid pointer if a length of zero is
  4543. specified - a length of one is used and a warning is issued. This matches
  4544. the behavior of AcpiUtAllocate.
  4545.  
  4546. Code and Data Size: The current and previous library sizes for the core
  4547. subsystem are shown below. These are the code and data sizes for the
  4548. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4549. values do not include any ACPI driver or OSPM code. The debug version of the
  4550. code includes the debug output trace mechanism and has a much larger code
  4551. and data size. Note that these values will vary depending on the efficiency
  4552. of the compiler and the compiler options used during generation.
  4553.  
  4554.   Previous Release:
  4555.     Non-Debug Version:  77.5K Code, 12.0K Data,  89.5K Total
  4556.     Debug Version:     168.1K Code, 68.4K Data, 236.5K Total
  4557.   Current Release:
  4558.     Non-Debug Version:  77.1K Code, 12.1K Data,  89.2K Total
  4559.     Debug Version:     168.0K Code, 68.3K Data, 236.3K Total
  4560.  
  4561.  
  4562. 2) iASL Compiler/Disassembler:
  4563.  
  4564. A remark is issued if the effective compile-time length of a package or
  4565. buffer is zero. Previously, this was a warning.
  4566.  
  4567. ----------------------------------------
  4568. 16 September 2005. Summary of changes for version 20050916:
  4569.  
  4570. 1) ACPI CA Core Subsystem:
  4571.  
  4572. Fixed a problem within the Resource Manager where support for the Generic
  4573. Register descriptor was not fully implemented. This descriptor is now fully
  4574. recognized, parsed, disassembled, and displayed.
  4575.  
  4576. Completely restructured the Resource Manager code to utilize table-driven
  4577. dispatch and lookup, eliminating many of the large switch() statements. This
  4578. reduces overall subsystem code size and code complexity. Affects the
  4579. resource parsing and construction, disassembly, and debug dump output.
  4580.  
  4581. Cleaned up and restructured the debug dump output for all resource
  4582. descriptors. Improved readability of the output and reduced code size.
  4583.  
  4584. Fixed a problem where changes to internal data structures caused the
  4585. optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
  4586.  
  4587. Code and Data Size: The current and previous library sizes for the core
  4588. subsystem are shown below. These are the code and data sizes for the
  4589. acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
  4590. values do not include any ACPI driver or OSPM code. The debug version of the
  4591. code includes the debug output trace mechanism and has a much larger code
  4592. and data size. Note that these values will vary depending on the efficiency
  4593. of the compiler and the compiler options used during generation.
  4594.  
  4595.   Previous Release:
  4596.     Non-Debug Version:  78.4K Code, 11.8K Data,  90.2K Total
  4597.     Debug Version:     169.6K Code, 69.9K Data, 239.5K Total
  4598.   Current Release:
  4599.     Non-Debug Version:  77.5K Code, 12.0K Data,  89.5K Total
  4600.     Debug Version:     168.1K Code, 68.4K Data, 236.5K Total
  4601.  
  4602.  
  4603. 2) iASL Compiler/Disassembler:
  4604.  
  4605. Updated the disassembler to automatically insert an EndDependentFn() macro
  4606. into the ASL stream if this macro is missing in the original AML code,
  4607. simplifying compilation of the resulting ASL module.
  4608.  
  4609. Fixed a problem in the disassembler where a disassembled ResourceSource
  4610. string (within a large resource descriptor) was not surrounded by quotes and
  4611. not followed by a comma, causing errors when the resulting ASL module was
  4612. compiled. Also, escape sequences within a ResourceSource string are now
  4613. handled correctly (especially "\\")
  4614.  
  4615. ----------------------------------------
  4616. 02 September 2005. Summary of changes for version 20050902:
  4617.  
  4618. 1) ACPI CA Core Subsystem:
  4619.  
  4620. Fixed a problem with the internal Owner ID allocation and deallocation
  4621. mechanisms for control method execution and recursive method invocation.
  4622. This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
  4623. messages seen on some systems. Recursive method invocation depth is
  4624. currently limited to 255. (Alexey Starikovskiy)
  4625.  
  4626. Completely eliminated all vestiges of support for the "module-level
  4627. executable code" until this support is fully implemented and debugged. This
  4628. should eliminate the NO_RETURN_VALUE exceptions seen during table load on
  4629. some systems that invoke this support.
  4630.  
  4631. Fixed a problem within the resource manager code where the transaction flags
  4632. for a 64-bit address descriptor were handled incorrectly in the type-
  4633. specific flag byte.
  4634.  
  4635. Consolidated duplicate code within the address descriptor resource manager
  4636. code, reducing overall subsystem code size.
  4637.  
  4638. Fixed a fault when using the AML debugger "disassemble" command to
  4639. disassemble individual control methods.
  4640.  
  4641. Removed references to the "release_current" directory within the Unix
  4642. release package.
  4643.  
  4644. Code and Data Size: The current and previous core subsystem library sizes
  4645. are shown below. These are the code and data sizes for the acpica.lib
  4646. produced by the Microsoft Visual C++ 6.0 compiler. These values do not
  4647. include any ACPI driver or OSPM code. The debug version of the code includes
  4648. the debug output trace mechanism and has a much larger code and data size.
  4649. Note that these values will vary depending on the efficiency of the compiler
  4650. and the compiler options used during generation.
  4651.  
  4652.   Previous Release:
  4653.     Non-Debug Version:  78.6K Code, 11.7K Data,  90.3K Total
  4654.     Debug Version:     170.0K Code, 69.9K Data, 239.9K Total
  4655.   Current Release:
  4656.     Non-Debug Version:  78.4K Code, 11.8K Data,  90.2K Total
  4657.     Debug Version:     169.6K Code, 69.9K Data, 239.5K Total
  4658.  
  4659.  
  4660. 2) iASL Compiler/Disassembler:
  4661.  
  4662. Implemented an error check for illegal duplicate values in the interrupt and
  4663. dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
  4664. Interrupt().
  4665.  
  4666. Implemented error checking for the Irq() and IrqNoFlags() macros to detect
  4667. too many values in the interrupt list (16 max) and invalid values in the
  4668. list (range 0 - 15)
  4669.  
  4670. The maximum length string literal within an ASL file is now restricted to
  4671. 200 characters as per the ACPI specification.
  4672.  
  4673. Fixed a fault when using the -ln option (generate namespace listing).
  4674.  
  4675. Implemented an error check to determine if a DescriptorName within a
  4676. resource descriptor has already been used within the current scope.
  4677.  
  4678. ----------------------------------------
  4679. 15 August 2005.  Summary of changes for version 20050815:
  4680.  
  4681. 1) ACPI CA Core Subsystem:
  4682.  
  4683. Implemented a full bytewise compare to determine if a table load request is
  4684. attempting to load a duplicate table. The compare is performed if the table
  4685. signatures and table lengths match. This will allow different tables with
  4686. the same OEM Table ID and revision to be loaded - probably against the ACPI
  4687. specification, but discovered in the field nonetheless.
  4688.  
  4689. Added the changes.txt logfile to each of the zipped release packages.
  4690.  
  4691. Code and Data Size: Current and previous core subsystem library sizes are
  4692. shown below. These are the code and data sizes for the acpica.lib produced
  4693. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  4694. any ACPI driver or OSPM code. The debug version of the code includes the
  4695. debug output trace mechanism and has a much larger code and data size. Note
  4696. that these values will vary depending on the efficiency of the compiler and
  4697. the compiler options used during generation.
  4698.  
  4699.   Previous Release:
  4700.     Non-Debug Version:  78.6K Code, 11.7K Data,  90.3K Total
  4701.     Debug Version:     167.0K Code, 69.9K Data, 236.9K Total
  4702.   Current Release:
  4703.     Non-Debug Version:  78.6K Code, 11.7K Data,  90.3K Total
  4704.     Debug Version:     170.0K Code, 69.9K Data, 239.9K Total
  4705.  
  4706.  
  4707. 2) iASL Compiler/Disassembler:
  4708.  
  4709. Fixed a problem where incorrect AML code could be generated for Package
  4710. objects if optimization is disabled (via the -oa switch).
  4711.  
  4712. Fixed a problem with where incorrect AML code is generated for variable-
  4713. length packages when the package length is not specified and the number of
  4714. initializer values is greater than 255.
  4715.  
  4716.  
  4717. ----------------------------------------
  4718. 29 July 2005.  Summary of changes for version 20050729:
  4719.  
  4720. 1) ACPI CA Core Subsystem:
  4721.  
  4722. Implemented support to ignore an attempt to install/load a particular ACPI
  4723. table more than once. Apparently there exists BIOS code that repeatedly
  4724. attempts to load the same SSDT upon certain events. With assistance from
  4725. Venkatesh Pallipadi.
  4726.  
  4727. Restructured the main interface to the AML parser in order to correctly
  4728. handle all exceptional conditions. This will prevent leakage of the OwnerId
  4729. resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some
  4730. machines. With assistance from Alexey Starikovskiy.
  4731.  
  4732. Support for "module level code" has been disabled in this version due to a
  4733. number of issues that have appeared on various machines. The support can be
  4734. enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
  4735. compilation. When the issues are fully resolved, the code will be enabled by
  4736. default again.
  4737.  
  4738. Modified the internal functions for debug print support to define the
  4739. FunctionName parameter as a (const char *) for compatibility with compiler
  4740. built-in macros such as __FUNCTION__, etc.
  4741.  
  4742. Linted the entire ACPICA source tree for both 32-bit and 64-bit.
  4743.  
  4744. Implemented support to display an object count summary for the AML Debugger
  4745. commands Object and Methods.
  4746.  
  4747. Code and Data Size: Current and previous core subsystem library sizes are
  4748. shown below. These are the code and data sizes for the acpica.lib produced
  4749. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  4750. any ACPI driver or OSPM code. The debug version of the code includes the
  4751. debug output trace mechanism and has a much larger code and data size. Note
  4752. that these values will vary depending on the efficiency of the compiler and
  4753. the compiler options used during generation.
  4754.  
  4755.   Previous Release:
  4756.     Non-Debug Version:  78.6K Code, 11.6K Data,  90.2K Total
  4757.     Debug Version:     170.0K Code, 69.7K Data, 239.7K Total
  4758.   Current Release:
  4759.     Non-Debug Version:  78.6K Code, 11.7K Data,  90.3K Total
  4760.     Debug Version:     167.0K Code, 69.9K Data, 236.9K Total
  4761.  
  4762.  
  4763. 2) iASL Compiler/Disassembler:
  4764.  
  4765. Fixed a regression that appeared in the 20050708 version of the compiler
  4766. where an error message was inadvertently emitted for invocations of the _OSI
  4767. reserved control method.
  4768.  
  4769. ----------------------------------------
  4770. 08 July 2005.  Summary of changes for version 20050708:
  4771.  
  4772. 1) ACPI CA Core Subsystem:
  4773.  
  4774. The use of the CPU stack in the debug version of the subsystem has been
  4775. considerably reduced. Previously, a debug structure was declared in every
  4776. function that used the debug macros. This structure has been removed in
  4777. favor of declaring the individual elements as parameters to the debug
  4778. functions. This reduces the cumulative stack use during nested execution of
  4779. ACPI function calls at the cost of a small increase in the code size of the
  4780. debug version of the subsystem. With assistance from Alexey Starikovskiy and
  4781. Len Brown.
  4782.  
  4783. Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
  4784. headers to define a macro that will return the current function name at
  4785. runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by
  4786. the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
  4787. compiler-dependent header, the function name is saved on the CPU stack (one
  4788. pointer per function.) This mechanism is used because apparently there
  4789. exists no standard ANSI-C defined macro that that returns the function name.
  4790.  
  4791. Redesigned and reimplemented the "Owner ID" mechanism used to track
  4792. namespace objects created/deleted by ACPI tables and control method
  4793. execution. A bitmap is now used to allocate and free the IDs, thus solving
  4794. the wraparound problem present in the previous implementation. The size of
  4795. the namespace node descriptor was reduced by 2 bytes as a result (Alexey
  4796. Starikovskiy).
  4797.  
  4798. Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield
  4799. flag definitions within the headers for the predefined ACPI tables. These
  4800. have been replaced by UINT8_BIT in order to increase the code portability of
  4801. the subsystem. If the use of UINT8 remains a problem, we may be forced to
  4802. eliminate bitfields entirely because of a lack of portability.
  4803.  
  4804. Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This
  4805. is a frequently used function and this improvement increases the performance
  4806. of the entire subsystem (Alexey Starikovskiy).
  4807.  
  4808. Fixed several possible memory leaks and the inverse - premature object
  4809. deletion (Alexey Starikovskiy).
  4810.  
  4811. Code and Data Size: Current and previous core subsystem library sizes are
  4812. shown below. These are the code and data sizes for the acpica.lib produced
  4813. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  4814. any ACPI driver or OSPM code. The debug version of the code includes the
  4815. debug output trace mechanism and has a much larger code and data size. Note
  4816. that these values will vary depending on the efficiency of the compiler and
  4817. the compiler options used during generation.
  4818.  
  4819.   Previous Release:
  4820.     Non-Debug Version:  78.6K Code, 11.5K Data,  90.1K Total
  4821.     Debug Version:     165.2K Code, 69.6K Data, 234.8K Total
  4822.   Current Release:
  4823.     Non-Debug Version:  78.6K Code, 11.6K Data,  90.2K Total
  4824.     Debug Version:     170.0K Code, 69.7K Data, 239.7K Total
  4825.  
  4826. ----------------------------------------
  4827. 24 June 2005.  Summary of changes for version 20050624:
  4828.  
  4829. 1) ACPI CA Core Subsystem:
  4830.  
  4831. Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
  4832. the host-defined cache object. This allows the OSL implementation to define
  4833. and type this object in any manner desired, simplifying the OSL
  4834. implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
  4835. Linux, and should be defined in the OS-specific header file for other
  4836. operating systems as required.
  4837.  
  4838. Changed the interface to AcpiOsAcquireObject to directly return the
  4839. requested object as the function return (instead of ACPI_STATUS.) This
  4840. change was made for performance reasons, since this is the purpose of the
  4841. interface in the first place. AcpiOsAcquireObject is now similar to the
  4842. AcpiOsAllocate interface.
  4843.  
  4844. Implemented a new AML debugger command named Businfo. This command displays
  4845. information about all devices that have an associate _PRT object. The _ADR,
  4846. _HID, _UID, and _CID are displayed for these devices.
  4847.  
  4848. Modified the initialization sequence in AcpiInitializeSubsystem to call the
  4849. OSL interface AcpiOslInitialize first, before any local initialization. This
  4850. change was required because the global initialization now calls OSL
  4851. interfaces.
  4852.  
  4853. Enhanced the Dump command to display the entire contents of Package objects
  4854. (including all sub-objects and their values.)
  4855.  
  4856. Restructured the code base to split some files because of size and/or
  4857. because the code logically belonged in a separate file. New files are listed
  4858. below. All makefiles and project files included in the ACPI CA release have
  4859. been updated.
  4860.     utilities/utcache.c           /* Local cache interfaces */
  4861.     utilities/utmutex.c           /* Local mutex support */
  4862.     utilities/utstate.c           /* State object support */
  4863.     interpreter/parser/psloop.c   /* Main AML parse loop */
  4864.  
  4865. Code and Data Size: Current and previous core subsystem library sizes are
  4866. shown below. These are the code and data sizes for the acpica.lib produced
  4867. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  4868. any ACPI driver or OSPM code. The debug version of the code includes the
  4869. debug output trace mechanism and has a much larger code and data size. Note
  4870. that these values will vary depending on the efficiency of the compiler and
  4871. the compiler options used during generation.
  4872.  
  4873.   Previous Release:
  4874.     Non-Debug Version:  78.3K Code, 11.6K Data,  89.9K Total
  4875.     Debug Version:     164.0K Code, 69.1K Data, 233.1K Total
  4876.   Current Release:
  4877.     Non-Debug Version:  78.6K Code, 11.5K Data,  90.1K Total
  4878.     Debug Version:     165.2K Code, 69.6K Data, 234.8K Total
  4879.  
  4880.  
  4881. 2) iASL Compiler/Disassembler:
  4882.  
  4883. Fixed a regression introduced in version 20050513 where the use of a Package
  4884. object within a Case() statement caused a compile time exception. The
  4885. original behavior has been restored (a Match() operator is emitted.)
  4886.  
  4887. ----------------------------------------
  4888. 17 June 2005.  Summary of changes for version 20050617:
  4889.  
  4890. 1) ACPI CA Core Subsystem:
  4891.  
  4892. Moved the object cache operations into the OS interface layer (OSL) to allow
  4893. the host OS to handle these operations if desired (for example, the Linux
  4894. OSL will invoke the slab allocator). This support is optional; the compile
  4895. time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache
  4896. code in the ACPI CA core. The new OSL interfaces are shown below. See
  4897. utalloc.c for an example implementation, and acpiosxf.h for the exact
  4898. interface definitions. With assistance from Alexey Starikovskiy.
  4899.     AcpiOsCreateCache
  4900.     AcpiOsDeleteCache
  4901.     AcpiOsPurgeCache
  4902.     AcpiOsAcquireObject
  4903.     AcpiOsReleaseObject
  4904.  
  4905. Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return
  4906. and restore a flags parameter. This fits better with many OS lock models.
  4907. Note: the current execution state (interrupt handler or not) is no longer
  4908. passed to these interfaces. If necessary, the OSL must determine this state
  4909. by itself, a simple and fast operation. With assistance from Alexey
  4910. Starikovskiy.
  4911.  
  4912. Fixed a problem in the ACPI table handling where a valid XSDT was assumed
  4913. present if the revision of the RSDP was 2 or greater. According to the ACPI
  4914. specification, the XSDT is optional in all cases, and the table manager
  4915. therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
  4916. Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain
  4917. only the RSDT.
  4918.  
  4919. Fixed an interpreter problem with the Mid() operator in the case of an input
  4920. string where the resulting output string is of zero length. It now correctly
  4921. returns a valid, null terminated string object instead of a string object
  4922. with a null pointer.
  4923.  
  4924. Fixed a problem with the control method argument handling to allow a store
  4925. to an Arg object that already contains an object of type Device. The Device
  4926. object is now correctly overwritten. Previously, an error was returned.
  4927.  
  4928.  
  4929. Enhanced the debugger Find command to emit object values in addition to the
  4930. found object pathnames. The output format is the same as the dump namespace
  4931. command.
  4932.  
  4933. Enhanced the debugger Set command. It now has the ability to set the value
  4934. of any Named integer object in the namespace (Previously, only method locals
  4935. and args could be set.)
  4936.  
  4937. Code and Data Size: Current and previous core subsystem library sizes are
  4938. shown below. These are the code and data sizes for the acpica.lib produced
  4939. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  4940. any ACPI driver or OSPM code. The debug version of the code includes the
  4941. debug output trace mechanism and has a much larger code and data size. Note
  4942. that these values will vary depending on the efficiency of the compiler and
  4943. the compiler options used during generation.
  4944.  
  4945.   Previous Release:
  4946.     Non-Debug Version:  78.1K Code, 11.6K Data,  89.7K Total
  4947.     Debug Version:     164.0K Code, 69.3K Data, 233.3K Total
  4948.   Current Release:
  4949.     Non-Debug Version:  78.3K Code, 11.6K Data,  89.9K Total
  4950.     Debug Version:     164.0K Code, 69.1K Data, 233.1K Total
  4951.  
  4952.  
  4953. 2) iASL Compiler/Disassembler:
  4954.  
  4955. Fixed a regression in the disassembler where if/else/while constructs were
  4956. output incorrectly. This problem was introduced in the previous release
  4957. (20050526). This problem also affected the single-step disassembly in the
  4958. debugger.
  4959.  
  4960. Fixed a problem where compiling the reserved _OSI method would randomly (but
  4961. rarely) produce compile errors.
  4962.  
  4963. Enhanced the disassembler to emit compilable code in the face of incorrect
  4964. AML resource descriptors. If the optional ResourceSourceIndex is present,
  4965. but the ResourceSource is not, do not emit the ResourceSourceIndex in the
  4966. disassembly. Otherwise, the resulting code cannot be compiled without
  4967. errors.
  4968.  
  4969. ----------------------------------------
  4970. 26 May 2005.  Summary of changes for version 20050526:
  4971.  
  4972. 1) ACPI CA Core Subsystem:
  4973.  
  4974. Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
  4975. the module level (not within a control method.) These opcodes are executed
  4976. exactly once at the time the table is loaded. This type of code was legal up
  4977. until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in
  4978. order to provide backwards compatibility with earlier BIOS implementations.
  4979. This eliminates the "Encountered executable code at module level" warning
  4980. that was previously generated upon detection of such code.
  4981.  
  4982. Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
  4983. inadvertently be generated during the lookup of namespace objects in the
  4984. second pass parse of ACPI tables and control methods. It appears that this
  4985. problem could occur during the resolution of forward references to namespace
  4986. objects.
  4987.  
  4988. Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
  4989. corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
  4990. allows the deadlock detection debug code to be compiled out in the normal
  4991. case, improving mutex performance (and overall subsystem performance)
  4992. considerably.
  4993.  
  4994. Implemented a handful of miscellaneous fixes for possible memory leaks on
  4995. error conditions and error handling control paths. These fixes were
  4996. suggested by FreeBSD and the Coverity Prevent source code analysis tool.
  4997.  
  4998. Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c)
  4999. to prevent a fault in this error case.
  5000.  
  5001. Code and Data Size: Current and previous core subsystem library sizes are
  5002. shown below. These are the code and data sizes for the acpica.lib produced
  5003. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5004. any ACPI driver or OSPM code. The debug version of the code includes the
  5005. debug output trace mechanism and has a much larger code and data size. Note
  5006. that these values will vary depending on the efficiency of the compiler and
  5007. the compiler options used during generation.
  5008.  
  5009.   Previous Release:
  5010.     Non-Debug Version:  78.2K Code, 11.6K Data,  89.8K Total
  5011.     Debug Version:     163.7K Code, 69.3K Data, 233.0K Total
  5012.   Current Release:
  5013.     Non-Debug Version:  78.1K Code, 11.6K Data,  89.7K Total
  5014.     Debug Version:     164.0K Code, 69.3K Data, 233.3K Total
  5015.  
  5016.  
  5017. 2) iASL Compiler/Disassembler:
  5018.  
  5019. Implemented support to allow Type 1 and Type 2 ASL operators to appear at
  5020. the module level (not within a control method.) These operators will be
  5021. executed once at the time the table is loaded. This type of code was legal
  5022. up until the release of ACPI 2.0B (2002) and is now supported by the iASL
  5023. compiler in order to provide backwards compatibility with earlier BIOS ASL
  5024. code.
  5025.  
  5026. The ACPI integer width (specified via the table revision ID or the -r
  5027. override, 32 or 64 bits) is now used internally during compile-time constant
  5028. folding to ensure that constants are truncated to 32 bits if necessary.
  5029. Previously, the revision ID value was only emitted in the AML table header.
  5030.  
  5031. An error message is now generated for the Mutex and Method operators if the
  5032. SyncLevel parameter is outside the legal range of 0 through 15.
  5033.  
  5034. Fixed a problem with the Method operator ParameterTypes list handling (ACPI
  5035. 3.0). Previously, more than 2 types or 2 arguments generated a syntax error.  
  5036. The actual underlying implementation of method argument typechecking is
  5037. still under development, however.
  5038.  
  5039. ----------------------------------------
  5040. 13 May 2005.  Summary of changes for version 20050513:
  5041.  
  5042. 1) ACPI CA Core Subsystem:
  5043.  
  5044. Implemented support for PCI Express root bridges -- added support for device
  5045. PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
  5046.  
  5047. The interpreter now automatically truncates incoming 64-bit constants to 32
  5048. bits if currently executing out of a 32-bit ACPI table (Revision < 2). This
  5049. also affects the iASL compiler constant folding. (Note: as per below, the
  5050. iASL compiler no longer allows 64-bit constants within 32-bit tables.)
  5051.  
  5052. Fixed a problem where string and buffer objects with "static" pointers
  5053. (pointers to initialization data within an ACPI table) were not handled
  5054. consistently. The internal object copy operation now always copies the data
  5055. to a newly allocated buffer, regardless of whether the source object is
  5056. static or not.
  5057.  
  5058. Fixed a problem with the FromBCD operator where an implicit result
  5059. conversion was improperly performed while storing the result to the target
  5060. operand. Since this is an "explicit conversion" operator, the implicit
  5061. conversion should never be performed on the output.
  5062.  
  5063. Fixed a problem with the CopyObject operator where a copy to an existing
  5064. named object did not always completely overwrite the existing object stored
  5065. at name. Specifically, a buffer-to-buffer copy did not delete the existing
  5066. buffer.
  5067.  
  5068. Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and
  5069. structs for consistency.
  5070.  
  5071. Code and Data Size: Current and previous core subsystem library sizes are
  5072. shown below. These are the code and data sizes for the acpica.lib produced
  5073. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5074. any ACPI driver or OSPM code. The debug version of the code includes the
  5075. debug output trace mechanism and has a much larger code and data size. Note
  5076. that these values will vary depending on the efficiency of the compiler and
  5077. the compiler options used during generation.
  5078.  
  5079.   Previous Release:
  5080.     Non-Debug Version:  78.2K Code, 11.6K Data,  89.8K Total
  5081.     Debug Version:     163.7K Code, 69.3K Data, 233.0K Total
  5082.   Current Release: (Same sizes)
  5083.     Non-Debug Version:  78.2K Code, 11.6K Data,  89.8K Total
  5084.     Debug Version:     163.7K Code, 69.3K Data, 233.0K Total
  5085.  
  5086.  
  5087. 2) iASL Compiler/Disassembler:
  5088.  
  5089. The compiler now emits a warning if an attempt is made to generate a 64-bit
  5090. integer constant from within a 32-bit ACPI table (Revision < 2). The integer
  5091. is truncated to 32 bits.
  5092.  
  5093. Fixed a problem with large package objects: if the static length of the
  5094. package is greater than 255, the "variable length package" opcode is
  5095. emitted. Previously, this caused an error. This requires an update to the
  5096. ACPI spec, since it currently (incorrectly) states that packages larger than
  5097. 255 elements are not allowed.
  5098.  
  5099. The disassembler now correctly handles variable length packages and packages
  5100. larger than 255 elements.
  5101.  
  5102. ----------------------------------------
  5103. 08 April 2005.  Summary of changes for version 20050408:
  5104.  
  5105. 1) ACPI CA Core Subsystem:
  5106.  
  5107. Fixed three cases in the interpreter where an "index" argument to an ASL
  5108. function was still (internally) 32 bits instead of the required 64 bits.
  5109. This was the Index argument to the Index, Mid, and Match operators.
  5110.  
  5111. The "strupr" function is now permanently local (AcpiUtStrupr), since this is
  5112. not a POSIX-defined function and not present in most kernel-level C
  5113. libraries. All references to the C library strupr function have been removed
  5114. from the headers.
  5115.  
  5116. Completed the deployment of static functions/prototypes. All prototypes with
  5117. the static attribute have been moved from the headers to the owning C file.
  5118.  
  5119. Implemented an extract option (-e) for the AcpiBin utility (AML binary
  5120. utility). This option allows the utility to extract individual ACPI tables
  5121. from the output of AcpiDmp. It provides the same functionality of the
  5122. acpixtract.pl perl script without the worry of setting the correct perl
  5123. options. AcpiBin runs on Windows and has not yet been generated/validated in
  5124. the Linux/Unix environment (but should be soon).
  5125.  
  5126. Updated and fixed the table dump option for AcpiBin (-d). This option
  5127. converts a single ACPI table to a hex/ascii file, similar to the output of
  5128. AcpiDmp.
  5129.  
  5130. Code and Data Size: Current and previous core subsystem library sizes are
  5131. shown below. These are the code and data sizes for the acpica.lib produced
  5132. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5133. any ACPI driver or OSPM code. The debug version of the code includes the
  5134. debug output trace mechanism and has a much larger code and data size. Note
  5135. that these values will vary depending on the efficiency of the compiler and
  5136. the compiler options used during generation.
  5137.  
  5138.   Previous Release:
  5139.     Non-Debug Version:  78.0K Code, 11.6K Data,  89.6K Total
  5140.     Debug Version:     163.5K Code, 69.3K Data, 232.8K Total
  5141.   Current Release:
  5142.     Non-Debug Version:  78.2K Code, 11.6K Data,  89.8K Total
  5143.     Debug Version:     163.7K Code, 69.3K Data, 233.0K Total
  5144.  
  5145.  
  5146. 2) iASL Compiler/Disassembler:
  5147.  
  5148. Disassembler fix: Added a check to ensure that the table length found in the
  5149. ACPI table header within the input file is not longer than the actual input
  5150. file size. This indicates some kind of file or table corruption.
  5151.  
  5152. ----------------------------------------
  5153. 29 March 2005.  Summary of changes for version 20050329:
  5154.  
  5155. 1) ACPI CA Core Subsystem:
  5156.  
  5157. An error is now generated if an attempt is made to create a Buffer Field of
  5158. length zero (A CreateField with a length operand of zero.)
  5159.  
  5160. The interpreter now issues a warning whenever executable code at the module
  5161. level is detected during ACPI table load. This will give some idea of the
  5162. prevalence of this type of code.
  5163.  
  5164. Implemented support for references to named objects (other than control
  5165. methods) within package objects.
  5166.  
  5167. Enhanced package object output for the debug object. Package objects are now
  5168. completely dumped, showing all elements.
  5169.  
  5170. Enhanced miscellaneous object output for the debug object. Any object can
  5171. now be written to the debug object (for example, a device object can be
  5172. written, and the type of the object will be displayed.)
  5173.  
  5174. The "static" qualifier has been added to all local functions across both the
  5175. core subsystem and the iASL compiler.
  5176.  
  5177. The number of "long" lines (> 80 chars) within the source has been
  5178. significantly reduced, by about 1/3.
  5179.  
  5180. Cleaned up all header files to ensure that all CA/iASL functions are
  5181. prototyped (even static functions) and the formatting is consistent.
  5182.  
  5183. Two new header files have been added, acopcode.h and acnames.h.
  5184.  
  5185. Removed several obsolete functions that were no longer used.
  5186.  
  5187. Code and Data Size: Current and previous core subsystem library sizes are
  5188. shown below. These are the code and data sizes for the acpica.lib produced
  5189. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5190. any ACPI driver or OSPM code. The debug version of the code includes the
  5191. debug output trace mechanism and has a much larger code and data size. Note
  5192. that these values will vary depending on the efficiency of the compiler and
  5193. the compiler options used during generation.
  5194.  
  5195.   Previous Release:
  5196.     Non-Debug Version:  78.3K Code, 11.5K Data,  89.8K Total
  5197.     Debug Version:     165.4K Code, 69.7K Data, 236.1K Total
  5198.   Current Release:
  5199.     Non-Debug Version:  78.0K Code, 11.6K Data,  89.6K Total
  5200.     Debug Version:     163.5K Code, 69.3K Data, 232.8K Total
  5201.  
  5202.  
  5203.  
  5204. 2) iASL Compiler/Disassembler:
  5205.  
  5206. Fixed a problem with the resource descriptor generation/support. For the
  5207. ResourceSourceIndex and the ResourceSource fields, both must be present, or
  5208. both must be not present - can't have one without the other.
  5209.  
  5210. The compiler now returns non-zero from the main procedure if any errors have
  5211. occurred during the compilation.
  5212.  
  5213.  
  5214. ----------------------------------------
  5215. 09 March 2005.  Summary of changes for version 20050309:
  5216.  
  5217. 1) ACPI CA Core Subsystem:
  5218.  
  5219. The string-to-buffer implicit conversion code has been modified again after
  5220. a change to the ACPI specification.  In order to match the behavior of the
  5221. other major ACPI implementation, the target buffer is no longer truncated if
  5222. the source string is smaller than an existing target buffer. This change
  5223. requires an update to the ACPI spec, and should eliminate the recent
  5224. AE_AML_BUFFER_LIMIT issues.
  5225.  
  5226. The "implicit return" support was rewritten to a new algorithm that solves
  5227. the general case. Rather than attempt to determine when a method is about to
  5228. exit, the result of every ASL operator is saved momentarily until the very
  5229. next ASL operator is executed. Therefore, no matter how the method exits,
  5230. there will always be a saved implicit return value. This feature is only
  5231. enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate
  5232. AE_AML_NO_RETURN_VALUE errors when enabled.
  5233.  
  5234. Implemented implicit conversion support for the predicate (operand) of the
  5235. If, Else, and While operators. String and Buffer arguments are automatically
  5236. converted to Integers.
  5237.  
  5238. Changed the string-to-integer conversion behavior to match the new ACPI
  5239. errata: "If no integer object exists, a new integer is created. The ASCII
  5240. string is interpreted as a hexadecimal constant. Each string character is
  5241. interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
  5242. with the first character as the most significant digit, and ending with the
  5243. first non-hexadecimal character or end-of-string." This means that the first
  5244. non-hex character terminates the conversion and this is the code that was
  5245. changed.
  5246.  
  5247. Fixed a problem where the ObjectType operator would fail (fault) when used
  5248. on an Index of a Package which pointed to a null package element. The
  5249. operator now properly returns zero (Uninitialized) in this case.
  5250.  
  5251. Fixed a problem where the While operator used excessive memory by not
  5252. properly popping the result stack during execution. There was no memory leak
  5253. after execution, however. (Code provided by Valery Podrezov.)
  5254.  
  5255. Fixed a problem where references to control methods within Package objects
  5256. caused the method to be invoked, instead of producing a reference object
  5257. pointing to the method.
  5258.  
  5259. Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to
  5260. improve performance and reduce code size. (Code provided by Alexey
  5261. Starikovskiy.)
  5262.  
  5263. Code and Data Size: Current and previous core subsystem library sizes are
  5264. shown below. These are the code and data sizes for the acpica.lib produced
  5265. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5266. any ACPI driver or OSPM code. The debug version of the code includes the
  5267. debug output trace mechanism and has a much larger code and data size. Note
  5268. that these values will vary depending on the efficiency of the compiler and
  5269. the compiler options used during generation.
  5270.  
  5271.   Previous Release:
  5272.     Non-Debug Version:  78.3K Code, 11.5K Data,  89.8K Total
  5273.     Debug Version:     165.4K Code, 69.6K Data, 236.0K Total
  5274.   Current Release:
  5275.     Non-Debug Version:  78.3K Code, 11.5K Data,  89.8K Total
  5276.     Debug Version:     165.4K Code, 69.7K Data, 236.1K Total
  5277.  
  5278.  
  5279. 2) iASL Compiler/Disassembler:
  5280.  
  5281. Fixed a problem with the Return operator with no arguments. Since the AML
  5282. grammar for the byte encoding requires an operand for the Return opcode, the
  5283. compiler now emits a Return(Zero) for this case.  An ACPI specification
  5284. update has been written for this case.
  5285.  
  5286. For tables other than the DSDT, namepath optimization is automatically
  5287. disabled. This is because SSDTs can be loaded anywhere in the namespace, the
  5288. compiler has no knowledge of where, and thus cannot optimize namepaths.
  5289.  
  5290. Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
  5291. inadvertently omitted from the ACPI specification, and will require an
  5292. update to the spec.
  5293.  
  5294. The source file scan for ASCII characters is now optional (-a). This change
  5295. was made because some vendors place non-ascii characters within comments.
  5296. However, the scan is simply a brute-force byte compare to ensure all
  5297. characters in the file are in the range 0x00 to 0x7F.
  5298.  
  5299. Fixed a problem with the CondRefOf operator where the compiler was
  5300. inappropriately checking for the existence of the target. Since the point of
  5301. the operator is to check for the existence of the target at run-time, the
  5302. compiler no longer checks for the target existence.
  5303.  
  5304. Fixed a problem where errors generated from the internal AML interpreter
  5305. during constant folding were not handled properly, causing a fault.
  5306.  
  5307. Fixed a problem with overly aggressive range checking for the Stall
  5308. operator. The valid range (max 255) is now only checked if the operand is of
  5309. type Integer. All other operand types cannot be statically checked.
  5310.  
  5311. Fixed a problem where control method references within the RefOf, DeRefOf,
  5312. and ObjectType operators were not treated properly. They are now treated as
  5313. actual references, not method invocations.
  5314.  
  5315. Fixed and enhanced the "list namespace" option (-ln). This option was broken
  5316. a number of releases ago.
  5317.  
  5318. Improved error handling for the Field, IndexField, and BankField operators.
  5319. The compiler now cleanly reports and recovers from errors in the field
  5320. component (FieldUnit) list.
  5321.  
  5322. Fixed a disassembler problem where the optional ResourceDescriptor fields
  5323. TRS and TTP were not always handled correctly.
  5324.  
  5325. Disassembler - Comments in output now use "//" instead of "/*"
  5326.  
  5327. ----------------------------------------
  5328. 28 February 2005.  Summary of changes for version 20050228:
  5329.  
  5330. 1) ACPI CA Core Subsystem:
  5331.  
  5332. Fixed a problem where the result of an Index() operator (an object
  5333. reference) must increment the reference count on the target object for the
  5334. life of the object reference.
  5335.  
  5336. Implemented AML Interpreter and Debugger support for the new ACPI 3.0
  5337. Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace
  5338. resource descriptors.
  5339.  
  5340. Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
  5341. Space Descriptor" string, indicating interpreter support for the descriptors
  5342. above.
  5343.  
  5344. Implemented header support for the new ACPI 3.0 FADT flag bits.
  5345.  
  5346. Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1
  5347. status/enable registers.
  5348.  
  5349. Updated header support for the MADT processor local Apic struct and MADT
  5350. platform interrupt source struct for new ACPI 3.0 fields.
  5351.  
  5352. Implemented header support for the SRAT and SLIT ACPI tables.
  5353.  
  5354. Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag
  5355. at runtime.
  5356.  
  5357. Code and Data Size: Current and previous core subsystem library sizes are
  5358. shown below. These are the code and data sizes for the acpica.lib produced
  5359. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5360. any ACPI driver or OSPM code. The debug version of the code includes the
  5361. debug output trace mechanism and has a much larger code and data size. Note
  5362. that these values will vary depending on the efficiency of the compiler and
  5363. the compiler options used during generation.
  5364.  
  5365.   Previous Release:
  5366.     Non-Debug Version:  78.2K Code, 11.5K Data,  89.7K Total
  5367.     Debug Version:     164.9K Code, 69.2K Data, 234.1K Total
  5368.   Current Release:
  5369.     Non-Debug Version:  78.3K Code, 11.5K Data,  89.8K Total
  5370.     Debug Version:     165.4K Code, 69.6K Data, 236.0K Total
  5371.  
  5372.  
  5373. 2) iASL Compiler/Disassembler:
  5374.  
  5375. Fixed a problem with the internal 64-bit String-to-integer conversion with
  5376. strings less than two characters long.
  5377.  
  5378. Fixed a problem with constant folding where the result of the Index()
  5379. operator can not be considered a constant. This means that Index() cannot be
  5380. a type3 opcode and this will require an update to the ACPI specification.
  5381.  
  5382. Disassembler: Implemented support for the TTP, MTP, and TRS resource
  5383. descriptor fields. These fields were inadvertently ignored and not output in
  5384. the disassembly of the resource descriptor.
  5385.  
  5386.  
  5387.  ----------------------------------------
  5388. 11 February 2005.  Summary of changes for version 20050211:
  5389.  
  5390. 1) ACPI CA Core Subsystem:
  5391.  
  5392. Implemented ACPI 3.0 support for implicit conversion within the Match()
  5393. operator. MatchObjects can now be of type integer, buffer, or string instead
  5394. of just type integer.  Package elements are implicitly converted to the type
  5395. of the MatchObject. This change aligns the behavior of Match() with the
  5396. behavior of the other logical operators (LLess(), etc.) It also requires an
  5397. errata change to the ACPI specification as this support was intended for
  5398. ACPI 3.0, but was inadvertently omitted.
  5399.  
  5400. Fixed a problem with the internal implicit "to buffer" conversion. Strings
  5401. that are converted to buffers will cause buffer truncation if the string is
  5402. smaller than the target buffer. Integers that are converted to buffers will
  5403. not cause buffer truncation, only zero extension (both as per the ACPI
  5404. spec.) The problem was introduced when code was added to truncate the
  5405. buffer, but this should not be performed in all cases, only the string case.
  5406.  
  5407. Fixed a problem with the Buffer and Package operators where the interpreter
  5408. would get confused if two such operators were used as operands to an ASL
  5409. operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
  5410. stack was not being popped after the execution of these operators, resulting
  5411. in an AE_NO_RETURN_VALUE exception.
  5412.  
  5413. Fixed a problem with constructs of the form Store(Index(...),...). The
  5414. reference object returned from Index was inadvertently resolved to an actual
  5415. value. This problem was introduced in version 20050114 when the behavior of
  5416. Store() was modified to restrict the object types that can be used as the
  5417. source operand (to match the ACPI specification.)
  5418.  
  5419. Reduced excessive stack use within the AcpiGetObjectInfo procedure.
  5420.  
  5421. Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
  5422.  
  5423. Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
  5424.  
  5425. Code and Data Size: Current and previous core subsystem library sizes are
  5426. shown below. These are the code and data sizes for the acpica.lib produced
  5427. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5428. any ACPI driver or OSPM code. The debug version of the code includes the
  5429. debug output trace mechanism and has a much larger code and data size. Note
  5430. that these values will vary depending on the efficiency of the compiler and
  5431. the compiler options used during generation.
  5432.  
  5433.   Previous Release:
  5434.     Non-Debug Version:  78.1K Code, 11.5K Data,  89.6K Total
  5435.     Debug Version:     164.8K Code, 69.2K Data, 234.0K Total
  5436.   Current Release:
  5437.     Non-Debug Version:  78.2K Code, 11.5K Data,  89.7K Total
  5438.     Debug Version:     164.9K Code, 69.2K Data, 234.1K Total
  5439.  
  5440.  
  5441. 2) iASL Compiler/Disassembler:
  5442.  
  5443. Fixed a code generation problem in the constant folding optimization code
  5444. where incorrect code was generated if a constant was reduced to a buffer
  5445. object (i.e., a reduced type 5 opcode.)
  5446.  
  5447. Fixed a typechecking problem for the ToBuffer operator. Caused by an
  5448. incorrect return type in the internal opcode information table.
  5449.  
  5450. ----------------------------------------
  5451. 25 January 2005.  Summary of changes for version 20050125:
  5452.  
  5453. 1) ACPI CA Core Subsystem:
  5454.  
  5455. Fixed a recently introduced problem with the Global Lock where the
  5456. underlying semaphore was not created.  This problem was introduced in
  5457. version 20050114, and caused an AE_AML_NO_OPERAND exception during an
  5458. Acquire() operation on _GL.
  5459.  
  5460. The local object cache is now optional, and is disabled by default. Both
  5461. AcpiExec and the iASL compiler enable the cache because they run in user
  5462. mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE
  5463. to enable the local cache.
  5464.  
  5465. Fixed an issue in the internal function AcpiUtEvaluateObject concerning the
  5466. optional "implicit return" support where an error was returned if no return
  5467. object was expected, but one was implicitly returned. AE_OK is now returned
  5468. in this case and the implicitly returned object is deleted.
  5469. AcpiUtEvaluateObject is only occasionally used, and only to execute reserved
  5470. methods such as _STA and _INI where the return type is known up front.
  5471.  
  5472. Fixed a few issues with the internal convert-to-integer code. It now returns
  5473. an error if an attempt is made to convert a null string, a string of only
  5474. blanks/tabs, or a zero-length buffer. This affects both implicit conversion
  5475. and explicit conversion via the ToInteger() operator.
  5476.  
  5477. The internal debug code in AcpiUtAcquireMutex has been commented out. It is
  5478. not needed for normal operation and should increase the performance of the
  5479. entire subsystem. The code remains in case it is needed for debug purposes
  5480. again.
  5481.  
  5482. The AcpiExec source and makefile are included in the Unix/Linux package for
  5483. the first time.
  5484.  
  5485. Code and Data Size: Current and previous core subsystem library sizes are
  5486. shown below. These are the code and data sizes for the acpica.lib produced
  5487. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5488. any ACPI driver or OSPM code. The debug version of the code includes the
  5489. debug output trace mechanism and has a much larger code and data size. Note
  5490. that these values will vary depending on the efficiency of the compiler and
  5491. the compiler options used during generation.
  5492.  
  5493.   Previous Release:
  5494.     Non-Debug Version:  78.4K Code,  11.5K Data,   89.9K Total
  5495.     Debug Version:     165.4K Code,  69.4K Data,  234.8K Total
  5496.   Current Release:
  5497.     Non-Debug Version:  78.1K Code,  11.5K Data,   89.6K Total
  5498.     Debug Version:     164.8K Code,  69.2K Data,  234.0K Total
  5499.  
  5500. 2) iASL Compiler/Disassembler:
  5501.  
  5502. Switch/Case support: A warning is now issued if the type of the Switch value
  5503. cannot be determined at compile time. For example, Switch(Arg0) will
  5504. generate the warning, and the type is assumed to be an integer. As per the
  5505. ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the
  5506. warning.
  5507.  
  5508. Switch/Case support: Implemented support for buffer and string objects as
  5509. the switch value.  This is an ACPI 3.0 feature, now that LEqual supports
  5510. buffers and strings.
  5511.  
  5512. Switch/Case support: The emitted code for the LEqual() comparisons now uses
  5513. the switch value as the first operand, not the second. The case value is now
  5514. the second operand, and this allows the case value to be implicitly
  5515. converted to the type of the switch value, not the other way around.
  5516.  
  5517. Switch/Case support: Temporary variables are now emitted immediately within
  5518. the control method, not at the global level. This means that there are now
  5519. 36 temps available per-method, not 36 temps per-module as was the case with
  5520. the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
  5521.  
  5522. ----------------------------------------
  5523. 14 January 2005.  Summary of changes for version 20050114:
  5524.  
  5525. Added 2005 copyright to all module headers.  This affects every module in
  5526. the core subsystem, iASL compiler, and the utilities.
  5527.  
  5528. 1) ACPI CA Core Subsystem:
  5529.  
  5530. Fixed an issue with the String-to-Buffer conversion code where the string
  5531. null terminator was not included in the buffer after conversion, but there
  5532. is existing ASL that assumes the string null terminator is included. This is
  5533. the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
  5534. introduced in the previous version when the code was updated to correctly
  5535. set the converted buffer size as per the ACPI specification. The ACPI spec
  5536. is ambiguous and will be updated to specify that the null terminator must be
  5537. included in the converted buffer. This also affects the ToBuffer() ASL
  5538. operator.
  5539.  
  5540. Fixed a problem with the Mid() ASL/AML operator where it did not work
  5541. correctly on Buffer objects. Newly created sub-buffers were not being marked
  5542. as initialized.
  5543.  
  5544.  
  5545. Fixed a problem in AcpiTbFindTable where incorrect string compares were
  5546. performed on the OemId and OemTableId table header fields.  These fields are
  5547. not null terminated, so strncmp is now used instead of strcmp.
  5548.  
  5549. Implemented a restriction on the Store() ASL/AML operator to align the
  5550. behavior with the ACPI specification.  Previously, any object could be used
  5551. as the source operand.  Now, the only objects that may be used are Integers,
  5552. Buffers, Strings, Packages, Object References, and DDB Handles.  If
  5553. necessary, the original behavior can be restored by enabling the
  5554. EnableInterpreterSlack flag.
  5555.  
  5556. Enhanced the optional "implicit return" support to allow an implicit return
  5557. value from methods that are invoked externally via the AcpiEvaluateObject
  5558. interface.  This enables implicit returns from the _STA and _INI methods,
  5559. for example.
  5560.  
  5561. Changed the Revision() ASL/AML operator to return the current version of the
  5562. AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned
  5563. the supported ACPI version (This is the function of the _REV method).
  5564.  
  5565. Updated the _REV predefined method to return the currently supported version
  5566. of ACPI, now 3.
  5567.  
  5568. Implemented batch mode option for the AcpiExec utility (-b).
  5569.  
  5570. Code and Data Size: Current and previous core subsystem library sizes are
  5571. shown below. These are the code and data sizes for the acpica.lib produced
  5572. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5573. any ACPI driver or OSPM code. The debug version of the code includes the
  5574. debug output trace mechanism and has a much larger code and data size. Note
  5575. that these values will vary depending on the efficiency of the compiler and
  5576. the compiler options used during generation.
  5577.  
  5578.   Previous Release:
  5579.     Non-Debug Version:  78.3K Code,  11.5K Data,   89.8K Total
  5580.     Debug Version:     165.3K Code,  69.4K Data,  234.7K Total
  5581.   Current Release:
  5582.     Non-Debug Version:  78.4K Code,  11.5K Data,   89.9K Total
  5583.     Debug Version:     165.4K Code,  69.4K Data,  234.8K Total
  5584.  
  5585. ----------------------------------------
  5586. 10 December 2004.  Summary of changes for version 20041210:
  5587.  
  5588. ACPI 3.0 support is nearing completion in both the iASL compiler and the
  5589. ACPI CA core subsystem.
  5590.  
  5591. 1) ACPI CA Core Subsystem:
  5592.  
  5593. Fixed a problem in the ToDecimalString operator where the resulting string
  5594. length was incorrectly calculated. The length is now calculated exactly,
  5595. eliminating incorrect AE_STRING_LIMIT exceptions.
  5596.  
  5597. Fixed a problem in the ToHexString operator to allow a maximum 200 character
  5598. string to be produced.
  5599.  
  5600. Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy
  5601. routine where the length of the resulting buffer was not truncated to the
  5602. new size (if the target buffer already existed).
  5603.  
  5604. Code and Data Size: Current and previous core subsystem library sizes are
  5605. shown below. These are the code and data sizes for the acpica.lib produced
  5606. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5607. any ACPI driver or OSPM code. The debug version of the code includes the
  5608. debug output trace mechanism and has a much larger code and data size. Note
  5609. that these values will vary depending on the efficiency of the compiler and
  5610. the compiler options used during generation.
  5611.  
  5612.   Previous Release:
  5613.     Non-Debug Version:  78.3K Code,  11.5K Data,   89.8K Total
  5614.     Debug Version:     164.7K Code,  68.5K Data,  233.2K Total
  5615.   Current Release:
  5616.     Non-Debug Version:  78.3K Code,  11.5K Data,   89.8K Total
  5617.     Debug Version:     165.3K Code,  69.4K Data,  234.7K Total
  5618.  
  5619.  
  5620. 2) iASL Compiler/Disassembler:
  5621.  
  5622. Implemented the new ACPI 3.0 resource template macros - DWordSpace,
  5623. ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
  5624. Includes support in the disassembler.
  5625.  
  5626. Implemented support for the new (ACPI 3.0) parameter to the Register macro,
  5627. AccessSize.
  5628.  
  5629. Fixed a problem where the _HE resource name for the Interrupt macro was
  5630. referencing bit 0 instead of bit 1.
  5631.  
  5632. Implemented check for maximum 255 interrupts in the Interrupt macro.
  5633.  
  5634. Fixed a problem with the predefined resource descriptor names where
  5635. incorrect AML code was generated if the offset within the resource buffer
  5636. was 0 or 1.  The optimizer shortened the AML code to a single byte opcode
  5637. but did not update the surrounding package lengths.
  5638.  
  5639. Changes to the Dma macro:  All channels within the channel list must be in
  5640. the range 0-7.  Maximum 8 channels can be specified. BusMaster operand is
  5641. optional (default is BusMaster).
  5642.  
  5643. Implemented check for maximum 7 data bytes for the VendorShort macro.
  5644.  
  5645. The ReadWrite parameter is now optional for the Memory32 and similar macros.
  5646.  
  5647. ----------------------------------------
  5648. 03 December 2004.  Summary of changes for version 20041203:
  5649.  
  5650. 1) ACPI CA Core Subsystem:
  5651.  
  5652. The low-level field insertion/extraction code (exfldio) has been completely
  5653. rewritten to eliminate unnecessary complexity, bugs, and boundary
  5654. conditions.
  5655.  
  5656. Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString
  5657. operators where the input operand could be inadvertently deleted if no
  5658. conversion was necessary (e.g., if the input to ToInteger was an Integer
  5659. object.)
  5660.  
  5661. Fixed a problem with the ToDecimalString and ToHexString where an incorrect
  5662. exception code was returned if the resulting string would be > 200 chars.  
  5663. AE_STRING_LIMIT is now returned.
  5664.  
  5665. Fixed a problem with the Concatenate operator where AE_OK was always
  5666. returned, even if the operation failed.
  5667.  
  5668. Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
  5669. semaphores to be allocated.
  5670.  
  5671. Code and Data Size: Current and previous core subsystem library sizes are
  5672. shown below. These are the code and data sizes for the acpica.lib produced
  5673. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5674. any ACPI driver or OSPM code. The debug version of the code includes the
  5675. debug output trace mechanism and has a much larger code and data size. Note
  5676. that these values will vary depending on the efficiency of the compiler and
  5677. the compiler options used during generation.
  5678.  
  5679.   Previous Release:
  5680.     Non-Debug Version:  78.5K Code,  11.5K Data,   90.0K Total
  5681.     Debug Version:     165.2K Code,  68.6K Data,  233.8K Total
  5682.   Current Release:
  5683.     Non-Debug Version:  78.3K Code,  11.5K Data,   89.8K Total
  5684.     Debug Version:     164.7K Code,  68.5K Data,  233.2K Total
  5685.  
  5686.  
  5687. 2) iASL Compiler/Disassembler:
  5688.  
  5689. Fixed typechecking for the ObjectType and SizeOf operators.  Problem was
  5690. recently introduced in 20041119.
  5691.  
  5692. Fixed a problem with the ToUUID macro where the upper nybble of each buffer
  5693. byte was inadvertently set to zero.
  5694.  
  5695. ----------------------------------------
  5696. 19 November 2004.  Summary of changes for version 20041119:
  5697.  
  5698. 1) ACPI CA Core Subsystem:
  5699.  
  5700. Fixed a problem in the internal ConvertToInteger routine where new integers
  5701. were not truncated to 32 bits for 32-bit ACPI tables. This routine converts
  5702. buffers and strings to integers.
  5703.  
  5704. Implemented support to store a value to an Index() on a String object. This
  5705. is an ACPI 2.0 feature that had not yet been implemented.
  5706.  
  5707. Implemented new behavior for storing objects to individual package elements
  5708. (via the Index() operator). The previous behavior was to invoke the implicit
  5709. conversion rules if an object was already present at the index.  The new
  5710. behavior is to simply delete any existing object and directly store the new
  5711. object. Although the ACPI specification seems unclear on this subject, other
  5712. ACPI implementations behave in this manner.  (This is the root of the
  5713. AE_BAD_HEX_CONSTANT issue.)
  5714.  
  5715. Modified the RSDP memory scan mechanism to support the extended checksum for
  5716. ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
  5717. RSDP signature is found with a valid checksum.
  5718.  
  5719. Code and Data Size: Current and previous core subsystem library sizes are
  5720. shown below. These are the code and data sizes for the acpica.lib produced
  5721. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5722. any ACPI driver or OSPM code. The debug version of the code includes the
  5723. debug output trace mechanism and has a much larger code and data size. Note
  5724. that these values will vary depending on the efficiency of the compiler and
  5725. the compiler options used during generation.
  5726.  
  5727.   Previous Release:
  5728.     Non-Debug Version:  78.5K Code,  11.5K Data,   90.0K Total
  5729.     Debug Version:     165.2K Code,  68.6K Data,  233.8K Total
  5730.   Current Release:
  5731.     Non-Debug Version:  78.5K Code,  11.5K Data,   90.0K Total
  5732.     Debug Version:     165.2K Code,  68.6K Data,  233.8K Total
  5733.  
  5734.  
  5735. 2) iASL Compiler/Disassembler:
  5736.  
  5737. Fixed a missing semicolon in the aslcompiler.y file.
  5738.  
  5739. ----------------------------------------
  5740. 05 November 2004.  Summary of changes for version 20041105:
  5741.  
  5742. 1) ACPI CA Core Subsystem:
  5743.  
  5744. Implemented support for FADT revision 2.  This was an interim table (between
  5745. ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
  5746.  
  5747. Implemented optional support to allow uninitialized LocalX and ArgX
  5748. variables in a control method.  The variables are initialized to an Integer
  5749. object with a value of zero.  This support is enabled by setting the
  5750. AcpiGbl_EnableInterpreterSlack flag to TRUE.
  5751.  
  5752. Implemented support for Integer objects for the SizeOf operator.  Either 4
  5753. or 8 is returned, depending on the current integer size (32-bit or 64-bit,
  5754. depending on the parent table revision).
  5755.  
  5756. Fixed a problem in the implementation of the SizeOf and ObjectType operators
  5757. where the operand was resolved to a value too early, causing incorrect
  5758. return values for some objects.
  5759.  
  5760. Fixed some possible memory leaks during exceptional conditions.
  5761.  
  5762. Code and Data Size: Current and previous core subsystem library sizes are
  5763. shown below. These are the code and data sizes for the acpica.lib produced
  5764. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5765. any ACPI driver or OSPM code. The debug version of the code includes the
  5766. debug output trace mechanism and has a much larger code and data size. Note
  5767. that these values will vary depending on the efficiency of the compiler and
  5768. the compiler options used during generation.
  5769.  
  5770.   Previous Release:
  5771.     Non-Debug Version:  78.0K Code,  11.5K Data,   89.5K Total
  5772.     Debug Version:     164.8K Code,  68.6K Data,  233.4K Total
  5773.   Current Release:
  5774.     Non-Debug Version:  78.5K Code,  11.5K Data,   90.0K Total
  5775.     Debug Version:     165.2K Code,  68.6K Data,  233.8K Total
  5776.  
  5777.  
  5778. 2) iASL Compiler/Disassembler:
  5779.  
  5780. Implemented support for all ACPI 3.0 reserved names and methods.
  5781.  
  5782. Implemented all ACPI 3.0 grammar elements in the front-end, including
  5783. support for semicolons.
  5784.  
  5785. Implemented the ACPI 3.0 Function() and ToUUID() macros
  5786.  
  5787. Fixed a problem in the disassembler where a Scope() operator would not be
  5788. emitted properly if the target of the scope was in another table.
  5789.  
  5790. ----------------------------------------
  5791. 15 October 2004.  Summary of changes for version 20041015:
  5792.  
  5793. Note:  ACPI CA is currently undergoing an in-depth and complete formal
  5794. evaluation to test/verify the following areas. Other suggestions are
  5795. welcome. This will result in an increase in the frequency of releases and
  5796. the number of bug fixes in the next few months.
  5797.   - Functional tests for all ASL/AML operators
  5798.   - All implicit/explicit type conversions
  5799.   - Bit fields and operation regions
  5800.   - 64-bit math support and 32-bit-only "truncated" math support
  5801.   - Exceptional conditions, both compiler and interpreter
  5802.   - Dynamic object deletion and memory leaks
  5803.   - ACPI 3.0 support when implemented
  5804.   - External interfaces to the ACPI subsystem
  5805.  
  5806.  
  5807. 1) ACPI CA Core Subsystem:
  5808.  
  5809. Fixed two alignment issues on 64-bit platforms - within debug statements in
  5810. AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address
  5811. field within the non-aligned ACPI generic address structure.
  5812.  
  5813. Fixed a problem in the Increment and Decrement operators where incorrect
  5814. operand resolution could result in the inadvertent modification of the
  5815. original integer when the integer is passed into another method as an
  5816. argument and the arg is then incremented/decremented.
  5817.  
  5818. Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit
  5819. BCD number were truncated during conversion.
  5820.  
  5821. Fixed a problem in the ToDecimal operator where the length of the resulting
  5822. string could be set incorrectly too long if the input operand was a Buffer
  5823. object.
  5824.  
  5825. Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0)
  5826. within a buffer would prematurely terminate a compare between buffer
  5827. objects.
  5828.  
  5829. Added a check for string overflow (>200 characters as per the ACPI
  5830. specification) during the Concatenate operator with two string operands.
  5831.  
  5832. Code and Data Size: Current and previous core subsystem library sizes are
  5833. shown below. These are the code and data sizes for the acpica.lib produced
  5834. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5835. any ACPI driver or OSPM code. The debug version of the code includes the
  5836. debug output trace mechanism and has a much larger code and data size. Note
  5837. that these values will vary depending on the efficiency of the compiler and
  5838. the compiler options used during generation.
  5839.  
  5840.   Previous Release:
  5841.     Non-Debug Version:  77.8K Code,  11.5K Data,   89.3K Total
  5842.     Debug Version:     164.6K Code,  68.5K Data,  233.1K Total
  5843.   Current Release:
  5844.     Non-Debug Version:  78.0K Code,  11.5K Data,   89.5K Total
  5845.     Debug Version:     164.8K Code,  68.6K Data,  233.4K Total
  5846.  
  5847.  
  5848.  
  5849. 2) iASL Compiler/Disassembler:
  5850.  
  5851. Allow the use of the ObjectType operator on uninitialized Locals and Args
  5852. (returns 0 as per the ACPI specification).
  5853.  
  5854. Fixed a problem where the compiler would fault if there was a syntax error
  5855. in the FieldName of all of the various CreateXXXField operators.
  5856.  
  5857. Disallow the use of lower case letters within the EISAID macro, as per the
  5858. ACPI specification.  All EISAID strings must be of the form "UUUNNNN" Where
  5859. U is an uppercase letter and N is a hex digit.
  5860.  
  5861.  
  5862. ----------------------------------------
  5863. 06 October 2004.  Summary of changes for version 20041006:
  5864.  
  5865. 1) ACPI CA Core Subsystem:
  5866.  
  5867. Implemented support for the ACPI 3.0 Timer operator. This ASL function
  5868. implements a 64-bit timer with 100 nanosecond granularity.
  5869.  
  5870. Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
  5871. implement the ACPI 3.0 Timer operator.  This allows the host OS to implement
  5872. the timer with the best clock available. Also, it keeps the core subsystem
  5873. out of the clock handling business, since the host OS (usually) performs
  5874. this function.
  5875.  
  5876. Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
  5877. functions use a 64-bit address which is part of the packed ACPI Generic
  5878. Address Structure. Since the structure is non-aligned, the alignment macros
  5879. are now used to extract the address to a local variable before use.
  5880.  
  5881. Fixed a problem where the ToInteger operator assumed all input strings were
  5882. hexadecimal. The operator now handles both decimal strings and hex strings
  5883. (prefixed with "0x").
  5884.  
  5885. Fixed a problem where the string length in the string object created as a
  5886. result of the internal ConvertToString procedure could be incorrect. This
  5887. potentially affected all implicit conversions and also the ToDecimalString
  5888. and ToHexString operators.
  5889.  
  5890. Fixed two problems in the ToString operator. If the length parameter was
  5891. zero, an incorrect string object was created and the value of the input
  5892. length parameter was inadvertently changed from zero to Ones.
  5893.  
  5894. Fixed a problem where the optional ResourceSource string in the ExtendedIRQ
  5895. resource macro was ignored.
  5896.  
  5897. Simplified the interfaces to the internal division functions, reducing code
  5898. size and complexity.
  5899.  
  5900. Code and Data Size: Current and previous core subsystem library sizes are
  5901. shown below. These are the code and data sizes for the acpica.lib produced
  5902. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5903. any ACPI driver or OSPM code. The debug version of the code includes the
  5904. debug output trace mechanism and has a much larger code and data size. Note
  5905. that these values will vary depending on the efficiency of the compiler and
  5906. the compiler options used during generation.
  5907.  
  5908.   Previous Release:
  5909.     Non-Debug Version:  77.9K Code,  11.4K Data,   89.3K Total
  5910.     Debug Version:     164.5K Code,  68.3K Data,  232.8K Total
  5911.   Current Release:
  5912.     Non-Debug Version:  77.8K Code,  11.5K Data,   89.3K Total
  5913.     Debug Version:     164.6K Code,  68.5K Data,  233.1K Total
  5914.  
  5915.  
  5916. 2) iASL Compiler/Disassembler:
  5917.  
  5918. Implemented support for the ACPI 3.0 Timer operator.
  5919.  
  5920. Fixed a problem where the Default() operator was inadvertently ignored in a
  5921. Switch/Case block.  This was a problem in the translation of the Switch
  5922. statement to If...Else pairs.
  5923.  
  5924. Added support to allow a standalone Return operator, with no parentheses (or
  5925. operands).
  5926.  
  5927. Fixed a problem with code generation for the ElseIf operator where the
  5928. translated Else...If parse tree was improperly constructed leading to the
  5929. loss of some code.
  5930.  
  5931. ----------------------------------------
  5932. 22 September 2004.  Summary of changes for version 20040922:
  5933.  
  5934. 1) ACPI CA Core Subsystem:
  5935.  
  5936. Fixed a problem with the implementation of the LNot() operator where "Ones"
  5937. was not returned for the TRUE case. Changed the code to return Ones instead
  5938. of (!Arg) which was usually 1. This change affects iASL constant folding for
  5939. this operator also.
  5940.  
  5941. Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not
  5942. initialized properly -- Now zero the entire buffer in this case where the
  5943. buffer already exists.
  5944.  
  5945. Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
  5946. Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
  5947. related code considerably. This will require changes/updates to all OS
  5948. interface layers (OSLs.)
  5949.  
  5950. Implemented a new external interface, AcpiInstallExceptionHandler, to allow
  5951. a system exception handler to be installed. This handler is invoked upon any
  5952. run-time exception that occurs during control method execution.
  5953.  
  5954. Added support for the DSDT in AcpiTbFindTable. This allows the
  5955. DataTableRegion() operator to access the local copy of the DSDT.
  5956.  
  5957. Code and Data Size: Current and previous core subsystem library sizes are
  5958. shown below. These are the code and data sizes for the acpica.lib produced
  5959. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  5960. any ACPI driver or OSPM code. The debug version of the code includes the
  5961. debug output trace mechanism and has a much larger code and data size. Note
  5962. that these values will vary depending on the efficiency of the compiler and
  5963. the compiler options used during generation.
  5964.  
  5965.   Previous Release:
  5966.     Non-Debug Version:  77.8K Code,  11.4K Data,   89.2K Total
  5967.     Debug Version:     164.2K Code,  68.2K Data,  232.4K Total
  5968.   Current Release:
  5969.     Non-Debug Version:  77.9K Code,  11.4K Data,   89.3K Total
  5970.     Debug Version:     164.5K Code,  68.3K Data,  232.8K Total
  5971.  
  5972.  
  5973. 2) iASL Compiler/Disassembler:
  5974.  
  5975. Fixed a problem with constant folding and the LNot operator. LNot was
  5976. returning 1 in the TRUE case, not Ones as per the ACPI specification. This
  5977. could result in the generation of an incorrect folded/reduced constant.
  5978.  
  5979. End-Of-File is now allowed within a "//"-style comment.  A parse error no
  5980. longer occurs if such a comment is at the very end of the input ASL source
  5981. file.
  5982.  
  5983. Implemented the "-r" option to override the Revision in the table header.
  5984. The initial use of this option will be to simplify the evaluation of the AML
  5985. interpreter by allowing a single ASL source module to be compiled for either
  5986. 32-bit or 64-bit integers.
  5987.  
  5988.  
  5989. ----------------------------------------
  5990. 27 August 2004.  Summary of changes for version 20040827:
  5991.  
  5992. 1) ACPI CA Core Subsystem:
  5993.  
  5994. - Implemented support for implicit object conversion in the non-numeric
  5995. logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and
  5996. LNotEqual.)  Any combination of Integers/Strings/Buffers may now be used;
  5997. the second operand is implicitly converted on the fly to match the type of
  5998. the first operand.  For example:
  5999.  
  6000.     LEqual (Source1, Source2)
  6001.  
  6002. Source1 and Source2 must each evaluate to an integer, a string, or a buffer.
  6003. The data type of Source1 dictates the required type of Source2. Source2 is
  6004. implicitly converted if necessary to match the type of Source1.
  6005.  
  6006. - Updated and corrected the behavior of the string conversion support.  The
  6007. rules concerning conversion of buffers to strings (according to the ACPI
  6008. specification) are as follows:
  6009.  
  6010. ToDecimalString - explicit byte-wise conversion of buffer to string of
  6011. decimal values (0-255) separated by commas. ToHexString - explicit byte-wise
  6012. conversion of buffer to string of hex values (0-FF) separated by commas.
  6013. ToString - explicit byte-wise conversion of buffer to string.  Byte-by-byte
  6014. copy with no transform except NULL terminated. Any other implicit buffer-to-
  6015. string conversion - byte-wise conversion of buffer to string of hex values
  6016. (0-FF) separated by spaces.
  6017.  
  6018. - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
  6019.  
  6020. - Fixed a problem in AcpiNsGetPathnameLength where the returned length was
  6021. one byte too short in the case of a node in the root scope.  This could
  6022. cause a fault during debug output.
  6023.  
  6024. - Code and Data Size: Current and previous core subsystem library sizes are
  6025. shown below.  These are the code and data sizes for the acpica.lib produced
  6026. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6027. any ACPI driver or OSPM code.  The debug version of the code includes the
  6028. debug output trace mechanism and has a much larger code and data size.  Note
  6029. that these values will vary depending on the efficiency of the compiler and
  6030. the compiler options used during generation.
  6031.  
  6032.   Previous Release:
  6033.     Non-Debug Version:  77.9K Code,  11.5K Data,   89.4K Total
  6034.     Debug Version:     164.1K Code,  68.3K Data,  232.4K Total
  6035.   Current Release:
  6036.     Non-Debug Version:  77.8K Code,  11.4K Data,   89.2K Total
  6037.     Debug Version:     164.2K Code,  68.2K Data,  232.4K Total
  6038.  
  6039.  
  6040. 2) iASL Compiler/Disassembler:
  6041.  
  6042. - Fixed a Linux generation error.
  6043.  
  6044.  
  6045. ----------------------------------------
  6046. 16 August 2004.  Summary of changes for version 20040816:
  6047.  
  6048. 1) ACPI CA Core Subsystem:
  6049.  
  6050. Designed and implemented support within the AML interpreter for the so-
  6051. called "implicit return".  This support returns the result of the last ASL
  6052. operation within a control method, in the absence of an explicit Return()
  6053. operator.  A few machines depend on this behavior, even though it is not
  6054. explicitly supported by the ASL language.  It is optional support that can
  6055. be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
  6056.  
  6057. Removed support for the PCI_Config address space from the internal low level
  6058. hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite).  This
  6059. support was not used internally, and would not work correctly anyway because
  6060. the PCI bus number and segment number were not supported.  There are
  6061. separate interfaces for PCI configuration space access because of the unique
  6062. interface.
  6063.  
  6064. Code and Data Size: Current and previous core subsystem library sizes are
  6065. shown below.  These are the code and data sizes for the acpica.lib produced
  6066. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6067. any ACPI driver or OSPM code.  The debug version of the code includes the
  6068. debug output trace mechanism and has a much larger code and data size.  Note
  6069. that these values will vary depending on the efficiency of the compiler and
  6070. the compiler options used during generation.
  6071.  
  6072.   Previous Release:
  6073.     Non-Debug Version:  78.0K Code,  11.5K Data,   89.5K Total
  6074.     Debug Version:     164.1K Code,  68.2K Data,  232.3K Total
  6075.   Current Release:
  6076.     Non-Debug Version:  77.9K Code,  11.5K Data,   89.4K Total
  6077.     Debug Version:     164.1K Code,  68.3K Data,  232.4K Total
  6078.  
  6079.  
  6080. 2) iASL Compiler/Disassembler:
  6081.  
  6082. Fixed a problem where constants in ASL expressions at the root level (not
  6083. within a control method) could be inadvertently truncated during code
  6084. generation.  This problem was introduced in the 20040715 release.
  6085.  
  6086.  
  6087. ----------------------------------------
  6088. 15 July 2004.  Summary of changes for version 20040715:
  6089.  
  6090. 1) ACPI CA Core Subsystem:
  6091.  
  6092. Restructured the internal HW GPE interfaces to pass/track the current state
  6093. of interrupts (enabled/disabled) in order to avoid possible deadlock and
  6094. increase flexibility of the interfaces.
  6095.  
  6096. Implemented a "lexicographical compare" for String and Buffer objects within
  6097. the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual --
  6098. as per further clarification to the ACPI specification.  Behavior is similar
  6099. to C library "strcmp".
  6100.  
  6101. Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
  6102. external function.  In the 32-bit non-debug case, the stack use has been
  6103. reduced from 168 bytes to 32 bytes.
  6104.  
  6105. Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack,
  6106. whose purpose is to allow the AML interpreter to forgive certain bad AML
  6107. constructs.  Default setting is FALSE.
  6108.  
  6109. Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO
  6110. support code.  If enabled, it allows field access to go beyond the end of a
  6111. region definition if the field is within the region length rounded up to the
  6112. next access width boundary (a common coding error.)
  6113.  
  6114. Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
  6115. ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols.  Also, these
  6116. symbols are lowercased by the latest version of the AcpiSrc tool.
  6117.  
  6118. The prototypes for the PCI interfaces in acpiosxf.h have been updated to
  6119. rename "Register" to simply "Reg" to prevent certain compilers from
  6120. complaining.
  6121.  
  6122. Code and Data Size: Current and previous core subsystem library sizes are
  6123. shown below.  These are the code and data sizes for the acpica.lib produced
  6124. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6125. any ACPI driver or OSPM code.  The debug version of the code includes the
  6126. debug output trace mechanism and has a much larger code and data size.  Note
  6127. that these values will vary depending on the efficiency of the compiler and
  6128. the compiler options used during generation.
  6129.  
  6130.   Previous Release:
  6131.     Non-Debug Version:  77.8K Code,  11.5K Data,   89.3K Total
  6132.     Debug Version:     163.8K Code,  68.2K Data,  232.0K Total
  6133.   Current Release:
  6134.     Non-Debug Version:  78.0K Code,  11.5K Data,   89.5K Total
  6135.     Debug Version:     164.1K Code,  68.2K Data,  232.3K Total
  6136.  
  6137.  
  6138. 2) iASL Compiler/Disassembler:
  6139.  
  6140. Implemented full support for Package objects within the Case() operator.  
  6141. Note: The Break() operator is currently not supported within Case blocks
  6142. (TermLists) as there is some question about backward compatibility with ACPI
  6143. 1.0 interpreters.
  6144.  
  6145.  
  6146. Fixed a problem where complex terms were not supported properly within the
  6147. Switch() operator.
  6148.  
  6149. Eliminated extraneous warning for compiler-emitted reserved names of the
  6150. form "_T_x".  (Used in Switch/Case operators.)
  6151.  
  6152. Eliminated optimization messages for "_T_x" objects and small constants
  6153. within the DefinitionBlock operator.
  6154.  
  6155.  
  6156. ----------------------------------------
  6157. 15 June 2004.  Summary of changes for version 20040615:
  6158.  
  6159. 1) ACPI CA Core Subsystem:
  6160.  
  6161. Implemented support for Buffer and String objects (as per ACPI 2.0) for the
  6162. following ASL operators:  LEqual, LGreater, LLess, LGreaterEqual, and
  6163. LLessEqual.
  6164.  
  6165. All directory names in the entire source package are lower case, as they
  6166. were in earlier releases.
  6167.  
  6168. Implemented "Disassemble" command in the AML debugger that will disassemble
  6169. a single control method.
  6170.  
  6171. Code and Data Size: Current and previous core subsystem library sizes are
  6172. shown below.  These are the code and data sizes for the acpica.lib produced
  6173. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6174. any ACPI driver or OSPM code.  The debug version of the code includes the
  6175. debug output trace mechanism and has a much larger code and data size.  Note
  6176. that these values will vary depending on the efficiency of the compiler and
  6177. the compiler options used during generation.
  6178.  
  6179.   Previous Release:
  6180.     Non-Debug Version:  77.7K Code,  11.5K Data,   89.2K Total
  6181.     Debug Version:     163.3K Code,  67.2K Data,  230.5K Total
  6182.  
  6183.   Current Release:
  6184.     Non-Debug Version:  77.8K Code,  11.5K Data,   89.3K Total
  6185.     Debug Version:     163.8K Code,  68.2K Data,  232.0K Total
  6186.  
  6187.  
  6188. 2) iASL Compiler/Disassembler:
  6189.  
  6190. Implemented support for Buffer and String objects (as per ACPI 2.0) for the
  6191. following ASL operators:  LEqual, LGreater, LLess, LGreaterEqual, and
  6192. LLessEqual.
  6193.  
  6194. All directory names in the entire source package are lower case, as they
  6195. were in earlier releases.
  6196.  
  6197. Fixed a fault when using the -g or -d<nofilename> options if the FADT was
  6198. not found.
  6199.  
  6200. Fixed an issue with the Windows version of the compiler where later versions
  6201. of Windows place the FADT in the registry under the name "FADT" and not
  6202. "FACP" as earlier versions did.  This applies when using the -g or -
  6203. d<nofilename> options.  The compiler now looks for both strings as
  6204. necessary.
  6205.  
  6206. Fixed a problem with compiler namepath optimization where a namepath within
  6207. the Scope() operator could not be optimized if the namepath was a subpath of
  6208. the current scope path.
  6209.  
  6210. ----------------------------------------
  6211. 27 May 2004.  Summary of changes for version 20040527:
  6212.  
  6213. 1) ACPI CA Core Subsystem:
  6214.  
  6215. Completed a new design and implementation for EBDA (Extended BIOS Data Area)
  6216. support in the RSDP scan code.  The original code improperly scanned for the
  6217. EBDA by simply scanning from memory location 0 to 0x400.  The correct method
  6218. is to first obtain the EBDA pointer from within the BIOS data area, then
  6219. scan 1K of memory starting at the EBDA pointer.  There appear to be few if
  6220. any machines that place the RSDP in the EBDA, however.
  6221.  
  6222. Integrated a fix for a possible fault during evaluation of BufferField
  6223. arguments.  Obsolete code that was causing the problem was removed.
  6224.  
  6225. Found and fixed a problem in the Field Support Code where data could be
  6226. corrupted on a bit field read that starts on an aligned boundary but does
  6227. not end on an aligned boundary.  Merged the read/write "datum length"
  6228. calculation code into a common procedure.
  6229.  
  6230. Rolled in a couple of changes to the FreeBSD-specific header.
  6231.  
  6232.  
  6233. Code and Data Size: Current and previous core subsystem library sizes are
  6234. shown below.  These are the code and data sizes for the acpica.lib produced
  6235. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6236. any ACPI driver or OSPM code.  The debug version of the code includes the
  6237. debug output trace mechanism and has a much larger code and data size.  Note
  6238. that these values will vary depending on the efficiency of the compiler and
  6239. the compiler options used during generation.
  6240.  
  6241.   Previous Release:
  6242.     Non-Debug Version:  77.6K Code,  11.5K Data,   89.1K Total
  6243.     Debug Version:     163.2K Code,  67.2K Data,  230.4K Total
  6244.   Current Release:
  6245.     Non-Debug Version:  77.7K Code,  11.5K Data,   89.2K Total
  6246.     Debug Version:     163.3K Code,  67.2K Data,  230.5K Total
  6247.  
  6248.  
  6249. 2) iASL Compiler/Disassembler:
  6250.  
  6251. Fixed a generation warning produced by some overly-verbose compilers for a
  6252. 64-bit constant.
  6253.  
  6254. ----------------------------------------
  6255. 14 May 2004.  Summary of changes for version 20040514:
  6256.  
  6257. 1) ACPI CA Core Subsystem:
  6258.  
  6259. Fixed a problem where hardware GPE enable bits sometimes not set properly
  6260. during and after GPE method execution.  Result of 04/27 changes.
  6261.  
  6262. Removed extra "clear all GPEs" when sleeping/waking.
  6263.  
  6264. Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
  6265. AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to
  6266. the new AcpiEv* calls as appropriate.
  6267.  
  6268. ACPI_OS_NAME was removed from the OS-specific headers.  The default name is
  6269. now "Microsoft Windows NT" for maximum compatibility.  However this can be
  6270. changed by modifying the acconfig.h file.
  6271.  
  6272. Allow a single invocation of AcpiInstallNotifyHandler for a handler that
  6273. traps both types of notifies (System, Device).  Use ACPI_ALL_NOTIFY flag.
  6274.  
  6275. Run _INI methods on ThermalZone objects.  This is against the ACPI
  6276. specification, but there is apparently ASL code in the field that has these
  6277. _INI methods, and apparently "other" AML interpreters execute them.
  6278.  
  6279. Performed a full 16/32/64 bit lint that resulted in some small changes.
  6280.  
  6281. Added a sleep simulation command to the AML debugger to test sleep code.
  6282.  
  6283. Code and Data Size: Current and previous core subsystem library sizes are
  6284. shown below.  These are the code and data sizes for the acpica.lib produced
  6285. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6286. any ACPI driver or OSPM code.  The debug version of the code includes the
  6287. debug output trace mechanism and has a much larger code and data size.  Note
  6288. that these values will vary depending on the efficiency of the compiler and
  6289. the compiler options used during generation.
  6290.  
  6291.   Previous Release:
  6292.     Non-Debug Version:  77.6K Code,  11.5K Data,   89.1K Total
  6293.     Debug Version:     162.9K Code,  67.0K Data,  229.9K Total
  6294.   Current Release:
  6295.     Non-Debug Version:  77.6K Code,  11.5K Data,   89.1K Total
  6296.     Debug Version:     163.2K Code,  67.2K Data,  230.4K Total
  6297.  
  6298. ----------------------------------------
  6299. 27 April 2004.  Summary of changes for version 20040427:
  6300.  
  6301. 1) ACPI CA Core Subsystem:
  6302.  
  6303. Completed a major overhaul of the GPE handling within ACPI CA.  There are
  6304. now three types of GPEs:  wake-only, runtime-only, and combination wake/run.  
  6305. The only GPEs allowed to be combination wake/run are for button-style
  6306. devices such as a control-method power button, control-method sleep button,
  6307. or a notebook lid switch.  GPEs that have an _Lxx or _Exx method and are not
  6308. referenced by any _PRW methods are marked for "runtime" and hardware
  6309. enabled.  Any GPE that is referenced by a _PRW method is marked for "wake"
  6310. (and disabled at runtime).  However, at sleep time, only those GPEs that
  6311. have been specifically enabled for wake via the AcpiEnableGpe interface will
  6312. actually be hardware enabled.
  6313.  
  6314. A new external interface has been added, AcpiSetGpeType(), that is meant to
  6315. be used by device drivers to force a GPE to a particular type.  It will be
  6316. especially useful for the drivers for the button devices mentioned above.
  6317.  
  6318. Completed restructuring of the ACPI CA initialization sequence so that
  6319. default operation region handlers are installed before GPEs are initialized
  6320. and the _PRW methods are executed.  This will prevent errors when the _PRW
  6321. methods attempt to access system memory or I/O space.
  6322.  
  6323. GPE enable/disable no longer reads the GPE enable register.  We now keep the
  6324. enable info for runtime and wake separate and in the GPE_EVENT_INFO.  We
  6325. thus no longer depend on the hardware to maintain these bits.
  6326.  
  6327. Always clear the wake status and fixed/GPE status bits before sleep, even
  6328. for state S5.
  6329.  
  6330. Improved the AML debugger output for displaying the GPE blocks and their
  6331. current status.
  6332.  
  6333. Added new strings for the _OSI method, of the form "Windows 2001 SPx" where
  6334. x = 0,1,2,3,4.
  6335.  
  6336. Fixed a problem where the physical address was incorrectly calculated when
  6337. the Load() operator was used to directly load from an Operation Region (vs.
  6338. loading from a Field object.)  Also added check for minimum table length for
  6339. this case.
  6340.  
  6341. Fix for multiple mutex acquisition.  Restore original thread SyncLevel on
  6342. mutex release.
  6343.  
  6344. Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
  6345. consistency with the other fields returned.
  6346.  
  6347. Shrunk the ACPI_GPE_EVENT_INFO structure by 40%.  There is one such
  6348. structure for each GPE in the system, so the size of this structure is
  6349. important.
  6350.  
  6351. CPU stack requirement reduction:  Cleaned up the method execution and object
  6352. evaluation paths so that now a parameter structure is passed, instead of
  6353. copying the various method parameters over and over again.
  6354.  
  6355. In evregion.c:  Correctly exit and reenter the interpreter region if and
  6356. only if dispatching an operation region request to a user-installed handler.  
  6357. Do not exit/reenter when dispatching to a default handler (e.g., default
  6358. system memory or I/O handlers)
  6359.  
  6360.  
  6361. Notes for updating drivers for the new GPE support.  The following changes
  6362. must be made to ACPI-related device drivers that are attached to one or more
  6363. GPEs: (This information will be added to the ACPI CA Programmer Reference.)
  6364.  
  6365. 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must
  6366. explicitly call AcpiEnableGpe.
  6367. 2) There is a new interface called AcpiSetGpeType. This should be called
  6368. before enabling the GPE.  Also, this interface will automatically disable
  6369. the GPE if it is currently enabled.
  6370. 3) AcpiEnableGpe no longer supports a GPE type flag.
  6371.  
  6372. Specific drivers that must be changed:
  6373. 1) EC driver:
  6374.     AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
  6375. AeGpeHandler, NULL);
  6376.     AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
  6377.     AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
  6378.  
  6379. 2) Button Drivers (Power, Lid, Sleep):
  6380. Run _PRW method under parent device
  6381. If _PRW exists: /* This is a control-method button */
  6382.     Extract GPE number and possibly GpeDevice
  6383.     AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
  6384.     AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
  6385.  
  6386. For all other devices that have _PRWs, we automatically set the GPE type to
  6387. ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.  This
  6388. must be done on a selective basis, usually requiring some kind of user app
  6389. to allow the user to pick the wake devices.
  6390.  
  6391.  
  6392. Code and Data Size: Current and previous core subsystem library sizes are
  6393. shown below.  These are the code and data sizes for the acpica.lib produced
  6394. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6395. any ACPI driver or OSPM code.  The debug version of the code includes the
  6396. debug output trace mechanism and has a much larger code and data size.  Note
  6397. that these values will vary depending on the efficiency of the compiler and
  6398. the compiler options used during generation.
  6399.  
  6400.   Previous Release:
  6401.     Non-Debug Version:  77.0K Code,  11.4K Data,   88.4K Total
  6402.     Debug Version:     161.0K Code,  66.3K Data,  227.3K Total
  6403.   Current Release:
  6404.  
  6405.     Non-Debug Version:  77.6K Code,  11.5K Data,   89.1K Total
  6406.     Debug Version:     162.9K Code,  67.0K Data,  229.9K Total
  6407.  
  6408.  
  6409.  
  6410. ----------------------------------------
  6411. 02 April 2004.  Summary of changes for version 20040402:
  6412.  
  6413. 1) ACPI CA Core Subsystem:
  6414.  
  6415. Fixed an interpreter problem where an indirect store through an ArgX
  6416. parameter was incorrectly applying the "implicit conversion rules" during
  6417. the store.  From the ACPI specification: "If the target is a method local or
  6418. argument (LocalX or ArgX), no conversion is performed and the result is
  6419. stored directly to the target".  The new behavior is to disable implicit
  6420. conversion during ALL stores to an ArgX.
  6421.  
  6422. Changed the behavior of the _PRW method scan to ignore any and all errors
  6423. returned by a given _PRW.  This prevents the scan from aborting from the
  6424. failure of any single _PRW.
  6425.  
  6426. Moved the runtime configuration parameters from the global init procedure to
  6427. static variables in acglobal.h.  This will allow the host to override the
  6428. default values easily.
  6429.  
  6430. Code and Data Size: Current and previous core subsystem library sizes are
  6431. shown below.  These are the code and data sizes for the acpica.lib produced
  6432. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6433. any ACPI driver or OSPM code.  The debug version of the code includes the
  6434. debug output trace mechanism and has a much larger code and data size.  Note
  6435. that these values will vary depending on the efficiency of the compiler and
  6436. the compiler options used during generation.
  6437.  
  6438.   Previous Release:
  6439.     Non-Debug Version:  76.9K Code,  11.4K Data,   88.3K Total
  6440.     Debug Version:     160.8K Code,  66.1K Data,  226.9K Total
  6441.   Current Release:
  6442.     Non-Debug Version:  77.0K Code,  11.4K Data,   88.4K Total
  6443.     Debug Version:     161.0K Code,  66.3K Data,  227.3K Total
  6444.  
  6445.  
  6446. 2) iASL Compiler/Disassembler:
  6447.  
  6448. iASL now fully disassembles SSDTs.  However, External() statements are not
  6449. generated automatically for unresolved symbols at this time.  This is a
  6450. planned feature for future implementation.
  6451.  
  6452. Fixed a scoping problem in the disassembler that occurs when the type of the
  6453. target of a Scope() operator is overridden.  This problem caused an
  6454. incorrectly nested internal namespace to be constructed.
  6455.  
  6456. Any warnings or errors that are emitted during disassembly are now commented
  6457. out automatically so that the resulting file can be recompiled without any
  6458. hand editing.
  6459.  
  6460. ----------------------------------------
  6461. 26 March 2004.  Summary of changes for version 20040326:
  6462.  
  6463. 1) ACPI CA Core Subsystem:
  6464.  
  6465. Implemented support for "wake" GPEs via interaction between GPEs and the
  6466. _PRW methods.  Every GPE that is pointed to by one or more _PRWs is
  6467. identified as a WAKE GPE and by default will no longer be enabled at
  6468. runtime.  Previously, we were blindly enabling all GPEs with a corresponding
  6469. _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.  We
  6470. believe this has been the cause of thousands of "spurious" GPEs on some
  6471. systems.
  6472.  
  6473. This new GPE behavior is can be reverted to the original behavior (enable
  6474. ALL GPEs at runtime) via a runtime flag.
  6475.  
  6476. Fixed a problem where aliased control methods could not access objects
  6477. properly.  The proper scope within the namespace was not initialized
  6478. (transferred to the target of the aliased method) before executing the
  6479. target method.
  6480.  
  6481. Fixed a potential race condition on internal object deletion on the return
  6482. object in AcpiEvaluateObject.
  6483.  
  6484. Integrated a fix for resource descriptors where both _MEM and _MTP were
  6485. being extracted instead of just _MEM.  (i.e. bitmask was incorrectly too
  6486. wide, 0x0F instead of 0x03.)
  6487.  
  6488. Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a
  6489. fault in some cases.
  6490.  
  6491. Updated Notify() values for debug statements in evmisc.c
  6492.  
  6493. Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
  6494.  
  6495. Code and Data Size: Current and previous core subsystem library sizes are
  6496. shown below.  These are the code and data sizes for the acpica.lib produced
  6497. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6498. any ACPI driver or OSPM code.  The debug version of the code includes the
  6499. debug output trace mechanism and has a much larger code and data size.  Note
  6500. that these values will vary depending on the efficiency of the compiler and
  6501. the compiler options used during generation.
  6502.  
  6503.   Previous Release:
  6504.  
  6505.     Non-Debug Version:  76.5K Code,  11.3K Data,   87.8K Total
  6506.     Debug Version:     160.3K Code,  66.0K Data,  226.3K Total
  6507.   Current Release:
  6508.     Non-Debug Version:  76.9K Code,  11.4K Data,   88.3K Total
  6509.     Debug Version:     160.8K Code,  66.1K Data,  226.9K Total
  6510.  
  6511. ----------------------------------------
  6512. 11 March 2004.  Summary of changes for version 20040311:
  6513.  
  6514. 1) ACPI CA Core Subsystem:
  6515.  
  6516. Fixed a problem where errors occurring during the parse phase of control
  6517. method execution did not abort cleanly.  For example, objects created and
  6518. installed in the namespace were not deleted.  This caused all subsequent
  6519. invocations of the method to return the AE_ALREADY_EXISTS exception.
  6520.  
  6521. Implemented a mechanism to force a control method to "Serialized" execution
  6522. if the method attempts to create namespace objects. (The root of the
  6523. AE_ALREADY_EXISTS problem.)
  6524.  
  6525. Implemented support for the predefined _OSI "internal" control method.  
  6526. Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and
  6527. "Windows 2001.1", and can be easily upgraded for new strings as necessary.  
  6528. This feature will allow "other" operating systems to execute the fully
  6529. tested, "Windows" code path through the ASL code
  6530.  
  6531. Global Lock Support:  Now allows multiple acquires and releases with any
  6532. internal thread.  Removed concept of "owning thread" for this special mutex.
  6533.  
  6534. Fixed two functions that were inappropriately declaring large objects on the
  6535. CPU stack:  PsParseLoop, NsEvaluateRelative.  Reduces the stack usage during
  6536. method execution considerably.
  6537.  
  6538. Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
  6539. S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
  6540.  
  6541. Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
  6542. defined on the machine.
  6543.  
  6544. Implemented two runtime options:  One to force all control method execution
  6545. to "Serialized" to mimic Windows behavior, another to disable _OSI support
  6546. if it causes problems on a given machine.
  6547.  
  6548. Code and Data Size: Current and previous core subsystem library sizes are
  6549. shown below.  These are the code and data sizes for the acpica.lib produced
  6550. by the Microsoft Visual C++ 6.0 compiler, and these values do not include
  6551. any ACPI driver or OSPM code.  The debug version of the code includes the
  6552. debug output trace mechanism and has a much larger code and data size.  Note
  6553. that these values will vary depending on the efficiency of the compiler and
  6554. the compiler options used during generation.
  6555.  
  6556.   Previous Release:
  6557.     Non-Debug Version:  74.8K Code,  10.1K Data,   84.9K Total
  6558.     Debug Version:     158.7K Code,  65.1K Data,  223.8K Total
  6559.   Current Release:
  6560.     Non-Debug Version:  76.5K Code,  11.3K Data,   87.8K Total
  6561.     Debug Version:     160.3K Code,  66.0K Data,  226.3K Total
  6562.  
  6563. 2) iASL Compiler/Disassembler:
  6564.  
  6565. Fixed an array size problem for FreeBSD that would cause the compiler to
  6566. fault.
  6567.  
  6568. ----------------------------------------
  6569. 20 February 2004.  Summary of changes for version 20040220:
  6570.  
  6571.  
  6572. 1) ACPI CA Core Subsystem:
  6573.  
  6574. Implemented execution of _SxD methods for Device objects in the
  6575. GetObjectInfo interface.
  6576.  
  6577. Fixed calls to _SST method to pass the correct arguments.
  6578.  
  6579. Added a call to _SST on wake to restore to "working" state.
  6580.  
  6581. Check for End-Of-Buffer failure case in the WalkResources interface.
  6582.  
  6583. Integrated fix for 64-bit alignment issue in acglobal.h by moving two
  6584. structures to the beginning of the file.
  6585.  
  6586. After wake, clear GPE status register(s) before enabling GPEs.
  6587.  
  6588. After wake, clear/enable power button.  (Perhaps we should clear/enable all
  6589. fixed events upon wake.)
  6590.  
  6591. Fixed a couple of possible memory leaks in the Namespace manager.
  6592.  
  6593. Integrated latest acnetbsd.h file.
  6594.  
  6595. ----------------------------------------
  6596. 11 February 2004.  Summary of changes for version 20040211:
  6597.  
  6598.  
  6599. 1) ACPI CA Core Subsystem:
  6600.  
  6601. Completed investigation and implementation of the call-by-reference
  6602. mechanism for control method arguments.
  6603.  
  6604. Fixed a problem where a store of an object into an indexed package could
  6605. fail if the store occurs within a different method than the method that
  6606. created the package.
  6607.  
  6608. Fixed a problem where the ToDecimal operator could return incorrect results.
  6609.  
  6610. Fixed a problem where the CopyObject operator could fail on some of the more
  6611. obscure objects (e.g., Reference objects.)
  6612.  
  6613. Improved the output of the Debug object to display buffer, package, and
  6614. index objects.
  6615.  
  6616. Fixed a problem where constructs of the form "RefOf (ArgX)" did not return
  6617. the expected result.
  6618.  
  6619. Added permanent ACPI_REPORT_ERROR macros for all instances of the
  6620. ACPI_AML_INTERNAL exception.
  6621.  
  6622. Integrated latest version of acfreebsd.h
  6623.  
  6624. ----------------------------------------
  6625. 16 January 2004.  Summary of changes for version 20040116:
  6626.  
  6627. The purpose of this release is primarily to update the copyright years in
  6628. each module, thus causing a huge number of diffs.  There are a few small
  6629. functional changes, however.
  6630.  
  6631. 1) ACPI CA Core Subsystem:
  6632.  
  6633. Improved error messages when there is a problem finding one or more of the
  6634. required base ACPI tables
  6635.  
  6636. Reintroduced the definition of APIC_HEADER in actbl.h
  6637.  
  6638. Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
  6639.  
  6640. Removed extraneous reference to NewObj in dsmthdat.c
  6641.  
  6642. 2) iASL compiler
  6643.  
  6644. Fixed a problem introduced in December that disabled the correct disassembly
  6645. of Resource Templates
  6646.  
  6647.  
  6648. ----------------------------------------
  6649. 03 December 2003.  Summary of changes for version 20031203:
  6650.  
  6651. 1) ACPI CA Core Subsystem:
  6652.  
  6653. Changed the initialization of Operation Regions during subsystem
  6654. init to perform two entire walks of the ACPI namespace; The first
  6655. to initialize the regions themselves, the second to execute the
  6656. _REG methods.  This fixed some interdependencies across _REG
  6657. methods found on some machines.
  6658.  
  6659. Fixed a problem where a Store(Local0, Local1) could simply update
  6660. the object reference count, and not create a new copy of the
  6661. object if the Local1 is uninitialized.
  6662.  
  6663. Implemented support for the _SST reserved method during sleep
  6664. transitions.
  6665.  
  6666. Implemented support to clear the SLP_TYP and SLP_EN bits when
  6667. waking up, this is apparently required by some machines.
  6668.  
  6669. When sleeping, clear the wake status only if SleepState is not S5.
  6670.  
  6671. Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
  6672. pointer arithmetic advanced a string pointer too far.
  6673.  
  6674. Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
  6675. could be returned if the requested table has not been loaded.
  6676.  
  6677. Within the support for IRQ resources, restructured the handling of
  6678. the active and edge/level bits.
  6679.  
  6680. Fixed a few problems in AcpiPsxExecute() where memory could be
  6681. leaked under certain error conditions.
  6682.  
  6683. Improved error messages for the cases where the ACPI mode could
  6684. not be entered.
  6685.  
  6686. Code and Data Size: Current and previous core subsystem library
  6687. sizes are shown below.  These are the code and data sizes for the
  6688. acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
  6689. these values do not include any ACPI driver or OSPM code.  The
  6690. debug version of the code includes the debug output trace
  6691. mechanism and has a much larger code and data size.  Note that
  6692. these values will vary depending on the efficiency of the compiler
  6693. and the compiler options used during generation.
  6694.  
  6695.   Previous Release (20031029):
  6696.     Non-Debug Version:  74.4K Code,  10.1K Data,   84.5K Total
  6697.     Debug Version:     158.3K Code,  65.0K Data,  223.3K Total
  6698.   Current Release:
  6699.     Non-Debug Version:  74.8K Code,  10.1K Data,   84.9K Total
  6700.     Debug Version:     158.7K Code,  65.1K Data,  223.8K Total
  6701.  
  6702. 2) iASL Compiler/Disassembler:
  6703.  
  6704. Implemented a fix for the iASL disassembler where a bad index was
  6705. generated.  This was most noticeable on 64-bit platforms
  6706.  
  6707.  
  6708. ----------------------------------------
  6709. 29 October 2003.  Summary of changes for version 20031029:
  6710.  
  6711. 1) ACPI CA Core Subsystem:
  6712.  
  6713.  
  6714. Fixed a problem where a level-triggered GPE with an associated
  6715. _Lxx control method was incorrectly cleared twice.
  6716.  
  6717. Fixed a problem with the Field support code where an access can
  6718. occur beyond the end-of-region if the field is non-aligned but
  6719. extends to the very end of the parent region (resulted in an
  6720. AE_AML_REGION_LIMIT exception.)
  6721.  
  6722. Fixed a problem with ACPI Fixed Events where an RT Clock handler
  6723. would not get invoked on an RTC event.  The RTC event bitmasks for
  6724. the PM1 registers were not being initialized properly.
  6725.  
  6726. Implemented support for executing _STA and _INI methods for
  6727. Processor objects.  Although this is currently not part of the
  6728. ACPI specification, there is existing ASL code that depends on the
  6729. init-time execution of these methods.
  6730.  
  6731. Implemented and deployed a GetDescriptorName function to decode
  6732. the various types of internal descriptors.  Guards against null
  6733. descriptors during debug output also.
  6734.  
  6735. Implemented and deployed a GetNodeName function to extract the 4-
  6736. character namespace node name.  This function simplifies the debug
  6737. and error output, as well as guarding against null pointers during
  6738. output.
  6739.  
  6740. Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
  6741. simplify the debug and error output of 64-bit integers.  This
  6742. macro replaces the HIDWORD and LODWORD macros for dumping these
  6743. integers.
  6744.  
  6745. Updated the implementation of the Stall() operator to only call
  6746. AcpiOsStall(), and also return an error if the operand is larger
  6747. than 255.  This preserves the required behavior of not
  6748. relinquishing the processor, as would happen if AcpiOsSleep() was
  6749. called for "long stalls".
  6750.  
  6751. Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
  6752. initialized are now treated as NOOPs.
  6753.  
  6754. Cleaned up a handful of warnings during 64-bit generation.
  6755.  
  6756. Fixed a reported error where and incorrect GPE number was passed
  6757. to the GPE dispatch handler.  This value is only used for error
  6758. output, however.  Used this opportunity to clean up and streamline
  6759. the GPE dispatch code.
  6760.  
  6761. Code and Data Size: Current and previous core subsystem library
  6762. sizes are shown below.  These are the code and data sizes for the
  6763. acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
  6764. these values do not include any ACPI driver or OSPM code.  The
  6765.  
  6766. debug version of the code includes the debug output trace
  6767. mechanism and has a much larger code and data size.  Note that
  6768. these values will vary depending on the efficiency of the compiler
  6769. and the compiler options used during generation.
  6770.  
  6771.   Previous Release (20031002):
  6772.     Non-Debug Version:  74.1K Code,   9.7K Data,   83.8K Total
  6773.     Debug Version:     157.9K Code,  64.8K Data,  222.7K Total
  6774.   Current Release:
  6775.     Non-Debug Version:  74.4K Code,  10.1K Data,   84.5K Total
  6776.     Debug Version:     158.3K Code,  65.0K Data,  223.3K Total
  6777.  
  6778.  
  6779. 2) iASL Compiler/Disassembler:
  6780.  
  6781. Updated the iASL compiler to return an error if the operand to the
  6782. Stall() operator is larger than 255.
  6783.  
  6784.  
  6785. ----------------------------------------
  6786. 02 October 2003.  Summary of changes for version 20031002:
  6787.  
  6788.  
  6789. 1) ACPI CA Core Subsystem:
  6790.  
  6791. Fixed a problem with Index Fields where the index was not
  6792. incremented for fields that require multiple writes to the
  6793. index/data registers (Fields that are wider than the data
  6794. register.)
  6795.  
  6796. Fixed a problem with all Field objects where a write could go
  6797. beyond the end-of-field if the field was larger than the access
  6798. granularity and therefore required multiple writes to complete the
  6799. request.  An extra write beyond the end of the field could happen
  6800. inadvertently.
  6801.  
  6802. Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
  6803. would incorrectly be returned if the width of the Data Register
  6804. was larger than the specified field access width.
  6805.  
  6806. Completed fixes for LoadTable() and Unload() and verified their
  6807. operation.  Implemented full support for the "DdbHandle" object
  6808. throughout the ACPI CA subsystem.
  6809.  
  6810. Implemented full support for the MADT and ECDT tables in the ACPI
  6811. CA header files.  Even though these tables are not directly
  6812. consumed by ACPI CA, the header definitions are useful for ACPI
  6813. device drivers.
  6814.  
  6815. Integrated resource descriptor fixes posted to the Linux ACPI
  6816. list.  This included checks for minimum descriptor length, and
  6817. support for trailing NULL strings within descriptors that have
  6818. optional string elements.
  6819.  
  6820. Code and Data Size: Current and previous core subsystem library
  6821. sizes are shown below.  These are the code and data sizes for the
  6822. acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
  6823. these values do not include any ACPI driver or OSPM code.  The
  6824. debug version of the code includes the debug output trace
  6825. mechanism and has a much larger code and data size.  Note that
  6826. these values will vary depending on the efficiency of the compiler
  6827. and the compiler options used during generation.
  6828.  
  6829.   Previous Release (20030918):
  6830.     Non-Debug Version:  73.9K Code,   9.7K Data,   83.6K Total
  6831.     Debug Version:     157.3K Code,  64.5K Data,  221.8K Total
  6832.   Current Release:
  6833.     Non-Debug Version:  74.1K Code,   9.7K Data,   83.8K Total
  6834.     Debug Version:     157.9K Code,  64.8K Data,  222.7K Total
  6835.  
  6836.  
  6837. 2) iASL Compiler:
  6838.  
  6839. Implemented detection of non-ASCII characters within the input
  6840. source ASL file.  This catches attempts to compile binary (AML)
  6841. files early in the compile, with an informative error message.
  6842.  
  6843. Fixed a problem where the disassembler would fault if the output
  6844. filename could not be generated or if the output file could not be
  6845. opened.
  6846.  
  6847. ----------------------------------------
  6848. 18 September 2003.  Summary of changes for version 20030918:
  6849.  
  6850.  
  6851. 1) ACPI CA Core Subsystem:
  6852.  
  6853. Found and fixed a longstanding problem with the late execution of
  6854. the various deferred AML opcodes (such as Operation Regions,
  6855. Buffer Fields, Buffers, and Packages).  If the name string
  6856. specified for the name of the new object placed the object in a
  6857. scope other than the current scope, the initialization/execution
  6858. of the opcode failed.  The solution to this problem was to
  6859. implement a mechanism where the late execution of such opcodes
  6860. does not attempt to lookup/create the name a second time in an
  6861. incorrect scope.  This fixes the "region size computed
  6862. incorrectly" problem.
  6863.  
  6864. Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
  6865. Global Lock AE_BAD_PARAMETER error.
  6866.  
  6867. Fixed several 64-bit issues with prototypes, casting and data
  6868. types.
  6869.  
  6870. Removed duplicate prototype from acdisasm.h
  6871.  
  6872. Fixed an issue involving EC Operation Region Detach (Shaohua Li)
  6873.  
  6874. Code and Data Size: Current and previous core subsystem library
  6875. sizes are shown below.  These are the code and data sizes for the
  6876. acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
  6877. these values do not include any ACPI driver or OSPM code.  The
  6878. debug version of the code includes the debug output trace
  6879. mechanism and has a much larger code and data size.  Note that
  6880. these values will vary depending on the efficiency of the compiler
  6881. and the compiler options used during generation.
  6882.  
  6883.   Previous Release:
  6884.  
  6885.     Non-Debug Version:  73.7K Code,   9.7K Data,   83.4K Total
  6886.     Debug Version:     156.9K Code,  64.2K Data,  221.1K Total
  6887.   Current Release:
  6888.     Non-Debug Version:  73.9K Code,   9.7K Data,   83.6K Total
  6889.     Debug Version:     157.3K Code,  64.5K Data,  221.8K Total
  6890.  
  6891.  
  6892. 2) Linux:
  6893.  
  6894. Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
  6895. correct sleep time in seconds.
  6896.  
  6897. ----------------------------------------
  6898. 14 July 2003.  Summary of changes for version 20030619:
  6899.  
  6900. 1) ACPI CA Core Subsystem:
  6901.  
  6902. Parse SSDTs in order discovered, as opposed to reverse order
  6903. (Hrvoje Habjanic)
  6904.  
  6905. Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
  6906. Klausner,
  6907.    Nate Lawson)
  6908.  
  6909.  
  6910. 2) Linux:
  6911.  
  6912. Dynamically allocate SDT list (suggested by Andi Kleen)
  6913.  
  6914. proc function return value cleanups (Andi Kleen)
  6915.  
  6916. Correctly handle NMI watchdog during long stalls (Andrew Morton)
  6917.  
  6918. Make it so acpismp=force works (reported by Andrew Morton)
  6919.  
  6920.  
  6921. ----------------------------------------
  6922. 19 June 2003.  Summary of changes for version 20030619:
  6923.  
  6924. 1) ACPI CA Core Subsystem:
  6925.  
  6926. Fix To/FromBCD, eliminating the need for an arch-specific #define.
  6927.  
  6928. Do not acquire a semaphore in the S5 shutdown path.
  6929.  
  6930. Fix ex_digits_needed for 0. (Takayoshi Kochi)
  6931.  
  6932. Fix sleep/stall code reversal. (Andi Kleen)
  6933.  
  6934. Revert a change having to do with control method calling
  6935. semantics.
  6936.  
  6937. 2) Linux:
  6938.  
  6939. acpiphp update (Takayoshi Kochi)
  6940.  
  6941. Export acpi_disabled for sonypi (Stelian Pop)
  6942.  
  6943. Mention acpismp=force in config help
  6944.  
  6945. Re-add acpitable.c and acpismp=force. This improves backwards
  6946.  
  6947. compatibility and also cleans up the code to a significant degree.
  6948.  
  6949. Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
  6950.  
  6951. ----------------------------------------
  6952. 22 May 2003.  Summary of changes for version 20030522:
  6953.  
  6954. 1) ACPI CA Core Subsystem:
  6955.  
  6956. Found and fixed a reported problem where an AE_NOT_FOUND error
  6957. occurred occasionally during _BST evaluation.  This turned out to
  6958. be an Owner ID allocation issue where a called method did not get
  6959. a new ID assigned to it.  Eventually, (after 64k calls), the Owner
  6960. ID UINT16 would wraparound so that the ID would be the same as the
  6961. caller's and the called method would delete the caller's
  6962. namespace.
  6963.  
  6964. Implemented extended error reporting for control methods that are
  6965. aborted due to a run-time exception.  Output includes the exact
  6966. AML instruction that caused the method abort, a dump of the method
  6967. locals and arguments at the time of the abort, and a trace of all
  6968. nested control method calls.
  6969.  
  6970. Modified the interpreter to allow the creation of buffers of zero
  6971. length from the AML code. Implemented new code to ensure that no
  6972. attempt is made to actually allocate a memory buffer (of length
  6973. zero) - instead, a simple buffer object with a NULL buffer pointer
  6974. and length zero is created.  A warning is no longer issued when
  6975. the AML attempts to create a zero-length buffer.
  6976.  
  6977. Implemented a workaround for the "leading asterisk issue" in
  6978. _HIDs, _UIDs, and _CIDs in the AML interpreter.  One leading
  6979. asterisk is automatically removed if present in any HID, UID, or
  6980. CID strings.  The iASL compiler will still flag this asterisk as
  6981. an error, however.
  6982.  
  6983. Implemented full support for _CID methods that return a package of
  6984. multiple CIDs (Compatible IDs).  The AcpiGetObjectInfo() interface
  6985. now additionally returns a device _CID list if present.  This
  6986. required a change to the external interface in order to pass an
  6987. ACPI_BUFFER object as a parameter since the _CID list is of
  6988. variable length.
  6989.  
  6990. Fixed a problem with the new AE_SAME_HANDLER exception where
  6991. handler initialization code did not know about this exception.
  6992.  
  6993. Code and Data Size: Current and previous core subsystem library
  6994. sizes are shown below.  These are the code and data sizes for the
  6995. acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
  6996. these values do not include any ACPI driver or OSPM code.  The
  6997. debug version of the code includes the debug output trace
  6998. mechanism and has a much larger code and data size.  Note that
  6999. these values will vary depending on the efficiency of the compiler
  7000. and the compiler options used during generation.
  7001.  
  7002.   Previous Release (20030509):
  7003.     Non-Debug Version:  73.4K Code,   9.7K Data,   83.1K Total
  7004.     Debug Version:     156.1K Code,  63.9K Data,  220.0K Total
  7005.   Current Release:
  7006.     Non-Debug Version:  73.7K Code,   9.7K Data,   83.4K Total
  7007.     Debug Version:     156.9K Code,  64.2K Data,  221.1K Total
  7008.  
  7009.  
  7010. 2) Linux:
  7011.  
  7012. Fixed a bug in which we would reinitialize the ACPI interrupt
  7013. after it was already working, thus disabling all ACPI and the IRQs
  7014. for any other device sharing the interrupt. (Thanks to Stian
  7015. Jordet)
  7016.  
  7017. Toshiba driver update (John Belmonte)
  7018.  
  7019. Return only 0 or 1 for our interrupt handler status (Andrew
  7020. Morton)
  7021.  
  7022.  
  7023. 3) iASL Compiler:
  7024.  
  7025. Fixed a reported problem where multiple (nested) ElseIf()
  7026. statements were not handled correctly by the compiler, resulting
  7027. in incorrect warnings and incorrect AML code.  This was a problem
  7028. in both the ASL parser and the code generator.
  7029.  
  7030.  
  7031. 4) Documentation:
  7032.  
  7033. Added changes to existing interfaces, new exception codes, and new
  7034. text concerning reference count object management versus garbage
  7035. collection.
  7036.  
  7037. ----------------------------------------
  7038. 09 May 2003.  Summary of changes for version 20030509.
  7039.  
  7040.  
  7041. 1) ACPI CA Core Subsystem:
  7042.  
  7043. Changed the subsystem initialization sequence to hold off
  7044. installation of address space handlers until the hardware has been
  7045. initialized and the system has entered ACPI mode.  This is because
  7046. the installation of space handlers can cause _REG methods to be
  7047. run.  Previously, the _REG methods could potentially be run before
  7048. ACPI mode was enabled.
  7049.  
  7050. Fixed some memory leak issues related to address space handler and
  7051. notify handler installation.  There were some problems with the
  7052. reference count mechanism caused by the fact that the handler
  7053. objects are shared across several namespace objects.
  7054.  
  7055. Fixed a reported problem where reference counts within the
  7056. namespace were not properly updated when named objects created by
  7057. method execution were deleted.
  7058.  
  7059. Fixed a reported problem where multiple SSDTs caused a deletion
  7060. issue during subsystem termination.  Restructured the table data
  7061. structures to simplify the linked lists and the related code.
  7062.  
  7063. Fixed a problem where the table ID associated with secondary
  7064. tables (SSDTs) was not being propagated into the namespace objects
  7065. created by those tables.  This would only present a problem for
  7066. tables that are unloaded at run-time, however.
  7067.  
  7068. Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
  7069. type as the length parameter (instead of UINT32).
  7070.  
  7071. Solved a long-standing problem where an ALREADY_EXISTS error
  7072. appears on various systems.  This problem could happen when there
  7073. are multiple PCI_Config operation regions under a single PCI root
  7074. bus.  This doesn't happen very frequently, but there are some
  7075. systems that do this in the ASL.
  7076.  
  7077. Fixed a reported problem where the internal DeleteNode function
  7078. was incorrectly handling the case where a namespace node was the
  7079. first in the parent's child list, and had additional peers (not
  7080. the only child, but first in the list of children.)
  7081.  
  7082. Code and Data Size: Current core subsystem library sizes are shown
  7083. below.  These are the code and data sizes for the acpica.lib
  7084. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7085. values do not include any ACPI driver or OSPM code.  The debug
  7086. version of the code includes the debug output trace mechanism and
  7087. has a much larger code and data size.  Note that these values will
  7088. vary depending on the efficiency of the compiler and the compiler
  7089. options used during generation.
  7090.  
  7091.   Previous Release
  7092.     Non-Debug Version:  73.7K Code,   9.5K Data,   83.2K Total
  7093.     Debug Version:     156.1K Code,  63.6K Data,  219.7K Total
  7094.   Current Release:
  7095.     Non-Debug Version:  73.4K Code,   9.7K Data,   83.1K Total
  7096.     Debug Version:     156.1K Code,  63.9K Data,  220.0K Total
  7097.  
  7098.  
  7099. 2) Linux:
  7100.  
  7101. Allow ":" in OS override string (Ducrot Bruno)
  7102.  
  7103. Kobject fix (Greg KH)
  7104.  
  7105.  
  7106. 3 iASL Compiler/Disassembler:
  7107.  
  7108. Fixed a problem in the generation of the C source code files (AML
  7109. is emitted in C source statements for BIOS inclusion) where the
  7110. Ascii dump that appears within a C comment at the end of each line
  7111. could cause a compile time error if the AML sequence happens to
  7112. have an open comment or close comment sequence embedded.
  7113.  
  7114.  
  7115. ----------------------------------------
  7116. 24 April 2003.  Summary of changes for version 20030424.
  7117.  
  7118.  
  7119. 1) ACPI CA Core Subsystem:
  7120.  
  7121. Support for big-endian systems has been implemented.  Most of the
  7122. support has been invisibly added behind big-endian versions of the
  7123. ACPI_MOVE_* macros.
  7124.  
  7125. Fixed a problem in AcpiHwDisableGpeBlock() and
  7126. AcpiHwClearGpeBlock() where an incorrect offset was passed to the
  7127. low level hardware write routine.  The offset parameter was
  7128. actually eliminated from the low level read/write routines because
  7129. they had become obsolete.
  7130.  
  7131. Fixed a problem where a handler object was deleted twice during
  7132. the removal of a fixed event handler.
  7133.  
  7134.  
  7135. 2) Linux:
  7136.  
  7137. A fix for SMP systems with link devices was contributed by
  7138.  
  7139. Compaq's Dan Zink.
  7140.  
  7141. (2.5) Return whether we handled the interrupt in our IRQ handler.
  7142. (Linux ISRs no longer return void, so we can propagate the handler
  7143. return value from the ACPI CA core back to the OS.)
  7144.  
  7145.  
  7146.  
  7147. 3) Documentation:
  7148.  
  7149. The ACPI CA Programmer Reference has been updated to reflect new
  7150. interfaces and changes to existing interfaces.
  7151.  
  7152. ----------------------------------------
  7153. 28 March 2003.  Summary of changes for version 20030328.
  7154.  
  7155. 1) ACPI CA Core Subsystem:
  7156.  
  7157. The GPE Block Device support has been completed.  New interfaces
  7158. are AcpiInstallGpeBlock and AcpiRemoveGpeBlock.  The Event
  7159. interfaces (enable, disable, clear, getstatus) have been split
  7160. into separate interfaces for Fixed Events and General Purpose
  7161. Events (GPEs) in order to support GPE Block Devices properly.
  7162.  
  7163. Fixed a problem where the error message "Failed to acquire
  7164. semaphore" would appear during operations on the embedded
  7165. controller (EC).
  7166.  
  7167. Code and Data Size: Current core subsystem library sizes are shown
  7168. below.  These are the code and data sizes for the acpica.lib
  7169. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7170. values do not include any ACPI driver or OSPM code.  The debug
  7171. version of the code includes the debug output trace mechanism and
  7172. has a much larger code and data size.  Note that these values will
  7173. vary depending on the efficiency of the compiler and the compiler
  7174. options used during generation.
  7175.  
  7176.   Previous Release
  7177.     Non-Debug Version:  72.3K Code,   9.5K Data,   81.8K Total
  7178.     Debug Version:     154.0K Code,  63.4K Data,  217.4K Total
  7179.   Current Release:
  7180.     Non-Debug Version:  73.7K Code,   9.5K Data,   83.2K Total
  7181.     Debug Version:     156.1K Code,  63.6K Data,  219.7K Total
  7182.  
  7183.  
  7184. ----------------------------------------
  7185. 28 February 2003.  Summary of changes for version 20030228.
  7186.  
  7187.  
  7188. 1) ACPI CA Core Subsystem:
  7189.  
  7190. The GPE handling and dispatch code has been completely overhauled
  7191. in preparation for support of GPE Block Devices (ID ACPI0006).
  7192. This affects internal data structures and code only; there should
  7193. be no differences visible externally.  One new file has been
  7194. added, evgpeblk.c
  7195.  
  7196. The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
  7197. fields that are used to determine the GPE block lengths.  The
  7198. REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
  7199. structures are ignored.  This is per the ACPI specification but it
  7200. isn't very clear.  The full 256 Block 0/1 GPEs are now supported
  7201. (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
  7202.  
  7203. In the SCI interrupt handler, removed the read of the PM1_CONTROL
  7204. register to look at the SCI_EN bit.  On some machines, this read
  7205. causes an SMI event and greatly slows down SCI events.  (This may
  7206. in fact be the cause of slow battery status response on some
  7207. systems.)
  7208.  
  7209. Fixed a problem where a store of a NULL string to a package object
  7210. could cause the premature deletion of the object.  This was seen
  7211. during execution of the battery _BIF method on some systems,
  7212. resulting in no battery data being returned.
  7213.  
  7214. Added AcpiWalkResources interface to simplify parsing of resource
  7215. lists.
  7216.  
  7217. Code and Data Size: Current core subsystem library sizes are shown
  7218. below.  These are the code and data sizes for the acpica.lib
  7219. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7220. values do not include any ACPI driver or OSPM code.  The debug
  7221. version of the code includes the debug output trace mechanism and
  7222. has a much larger code and data size.  Note that these values will
  7223. vary depending on the efficiency of the compiler and the compiler
  7224. options used during generation.
  7225.  
  7226.   Previous Release
  7227.     Non-Debug Version:  72.0K Code,   9.5K Data,   81.5K Total
  7228.     Debug Version:     153.0K Code,  62.9K Data,  215.9K Total
  7229.   Current Release:
  7230.     Non-Debug Version:  72.3K Code,   9.5K Data,   81.8K Total
  7231.     Debug Version:     154.0K Code,  63.4K Data,  217.4K Total
  7232.  
  7233.  
  7234. 2) Linux
  7235.  
  7236. S3 fixes (Ole Rohne)
  7237.  
  7238. Update ACPI PHP driver with to use new acpi_walk_resource API
  7239. (Bjorn Helgaas)
  7240.  
  7241. Add S4BIOS support (Pavel Machek)
  7242.  
  7243. Map in entire table before performing checksum (John Stultz)
  7244.  
  7245. Expand the mem= cmdline to allow the specification of reserved and
  7246. ACPI DATA blocks (Pavel Machek)
  7247.  
  7248. Never use ACPI on VISWS
  7249.  
  7250. Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
  7251.  
  7252. Revert a change that allowed P_BLK lengths to be 4 or 5. This is
  7253. causing us to think that some systems support C2 when they really
  7254. don't.
  7255.  
  7256. Do not count processor objects for non-present CPUs (Thanks to
  7257. Dominik Brodowski)
  7258.  
  7259.  
  7260. 3) iASL Compiler:
  7261.  
  7262. Fixed a problem where ASL include files could not be found and
  7263. opened.
  7264.  
  7265. Added support for the _PDC reserved name.
  7266.  
  7267.  
  7268. ----------------------------------------
  7269. 22 January 2003.  Summary of changes for version 20030122.
  7270.  
  7271.  
  7272. 1) ACPI CA Core Subsystem:
  7273.  
  7274. Added a check for constructs of the form:  Store (Local0, Local0)
  7275. where Local0 is not initialized.  Apparently, some BIOS
  7276. programmers believe that this is a NOOP.  Since this store doesn't
  7277. do anything anyway, the new prototype behavior will ignore this
  7278. error.  This is a case where we can relax the strict checking in
  7279. the interpreter in the name of compatibility.
  7280.  
  7281.  
  7282. 2) Linux
  7283.  
  7284. The AcpiSrc Source Conversion Utility has been released with the
  7285. Linux package for the first time.  This is the utility that is
  7286. used to convert the ACPI CA base source code to the Linux version.
  7287.  
  7288. (Both) Handle P_BLK lengths shorter than 6 more gracefully
  7289.  
  7290. (Both) Move more headers to include/acpi, and delete an unused
  7291. header.
  7292.  
  7293. (Both) Move drivers/acpi/include directory to include/acpi
  7294.  
  7295. (Both) Boot functions don't use cmdline, so don't pass it around
  7296.  
  7297. (Both) Remove include of unused header (Adrian Bunk)
  7298.  
  7299. (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
  7300. the
  7301. former now also includes the latter, acpiphp.h only needs the one,
  7302. now.
  7303.  
  7304. (2.5) Make it possible to select method of bios restoring after S3
  7305. resume. [=> no more ugly ifdefs] (Pavel Machek)
  7306.  
  7307. (2.5) Make proc write interfaces work (Pavel Machek)
  7308.  
  7309. (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
  7310.  
  7311. (2.5) Break out ACPI Perf code into its own module, under cpufreq
  7312. (Dominik Brodowski)
  7313.  
  7314. (2.4) S4BIOS support (Ducrot Bruno)
  7315.  
  7316. (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
  7317. Visinoni)
  7318.  
  7319.  
  7320. 3) iASL Compiler:
  7321.  
  7322. Added support to disassemble SSDT and PSDTs.
  7323.  
  7324. Implemented support to obtain SSDTs from the Windows registry if
  7325. available.
  7326.  
  7327.  
  7328. ----------------------------------------
  7329. 09 January 2003.  Summary of changes for version 20030109.
  7330.  
  7331. 1) ACPI CA Core Subsystem:
  7332.  
  7333. Changed the behavior of the internal Buffer-to-String conversion
  7334. function.  The current ACPI specification states that the contents
  7335. of the buffer are "converted to a string of two-character
  7336. hexadecimal numbers, each separated by a space".  Unfortunately,
  7337. this definition is not backwards compatible with existing ACPI 1.0
  7338. implementations (although the behavior was not defined in the ACPI
  7339. 1.0 specification).  The new behavior simply copies data from the
  7340. buffer to the string until a null character is found or the end of
  7341. the buffer is reached.  The new String object is always null
  7342. terminated.  This problem was seen during the generation of _BIF
  7343. battery data where incorrect strings were returned for battery
  7344. type, etc.  This will also require an errata to the ACPI
  7345. specification.
  7346.  
  7347. Renamed all instances of NATIVE_UINT and NATIVE_INT to
  7348. ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
  7349.  
  7350. Copyright in all module headers (both Linux and non-Linux) has be
  7351. updated to 2003.
  7352.  
  7353. Code and Data Size: Current core subsystem library sizes are shown
  7354. below.  These are the code and data sizes for the acpica.lib
  7355. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7356. values do not include any ACPI driver or OSPM code.  The debug
  7357. version of the code includes the debug output trace mechanism and
  7358. has a much larger code and data size.  Note that these values will
  7359. vary depending on the efficiency of the compiler and the compiler
  7360. options used during generation.
  7361.  
  7362.   Previous Release
  7363.     Non-Debug Version:  72.0K Code,   9.5K Data,   81.5K Total
  7364.     Debug Version:     153.0K Code,  62.9K Data,  215.9K Total
  7365.   Current Release:
  7366.     Non-Debug Version:  72.0K Code,   9.5K Data,   81.5K Total
  7367.     Debug Version:     153.0K Code,  62.9K Data,  215.9K Total
  7368.  
  7369.  
  7370. 2) Linux
  7371.  
  7372. Fixed an oops on module insertion/removal (Matthew Tippett)
  7373.  
  7374. (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
  7375.  
  7376. (2.5) Replace pr_debug (Randy Dunlap)
  7377.  
  7378. (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
  7379.  
  7380. (Both) Eliminate spawning of thread from timer callback, in favor
  7381. of schedule_work()
  7382.  
  7383. (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
  7384.  
  7385. (Both) Added define for Fixed Function HW region (Matthew Wilcox)
  7386.  
  7387. (Both) Add missing statics to button.c (Pavel Machek)
  7388.  
  7389. Several changes have been made to the source code translation
  7390. utility that generates the Linux Code in order to make the code
  7391. more "Linux-like":
  7392.  
  7393. All typedefs on structs and unions have been removed in keeping
  7394. with the Linux coding style.
  7395.  
  7396. Removed the non-Linux SourceSafe module revision number from each
  7397. module header.
  7398.  
  7399. Completed major overhaul of symbols to be lowercased for linux.
  7400. Doubled the number of symbols that are lowercased.
  7401.  
  7402. Fixed a problem where identifiers within procedure headers and
  7403. within quotes were not fully lower cased (they were left with a
  7404. starting capital.)
  7405.  
  7406. Some C macros whose only purpose is to allow the generation of 16-
  7407. bit code are now completely removed in the Linux code, increasing
  7408. readability and maintainability.
  7409.  
  7410. ----------------------------------------
  7411.  
  7412. 12 December 2002.  Summary of changes for version 20021212.
  7413.  
  7414.  
  7415. 1) ACPI CA Core Subsystem:
  7416.  
  7417. Fixed a problem where the creation of a zero-length AML Buffer
  7418. would cause a fault.
  7419.  
  7420. Fixed a problem where a Buffer object that pointed to a static AML
  7421. buffer (in an ACPI table) could inadvertently be deleted, causing
  7422. memory corruption.
  7423.  
  7424. Fixed a problem where a user buffer (passed in to the external
  7425. ACPI CA interfaces) could be overwritten if the buffer was too
  7426. small to complete the operation, causing memory corruption.
  7427.  
  7428. Fixed a problem in the Buffer-to-String conversion code where a
  7429. string of length one was always returned, regardless of the size
  7430. of the input Buffer object.
  7431.  
  7432. Removed the NATIVE_CHAR data type across the entire source due to
  7433. lack of need and lack of consistent use.
  7434.  
  7435. Code and Data Size: Current core subsystem library sizes are shown
  7436. below.  These are the code and data sizes for the acpica.lib
  7437. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7438. values do not include any ACPI driver or OSPM code.  The debug
  7439. version of the code includes the debug output trace mechanism and
  7440. has a much larger code and data size.  Note that these values will
  7441. vary depending on the efficiency of the compiler and the compiler
  7442. options used during generation.
  7443.  
  7444.   Previous Release
  7445.     Non-Debug Version:  72.1K Code,   9.5K Data,   81.6K Total
  7446.     Debug Version:     152.7K Code,  62.7K Data,  215.4K Total
  7447.   Current Release:
  7448.     Non-Debug Version:  72.0K Code,   9.5K Data,   81.5K Total
  7449.     Debug Version:     153.0K Code,  62.9K Data,  215.9K Total
  7450.  
  7451.  
  7452. ----------------------------------------
  7453. 05 December 2002.  Summary of changes for version 20021205.
  7454.  
  7455. 1) ACPI CA Core Subsystem:
  7456.  
  7457. Fixed a problem where a store to a String or Buffer object could
  7458. cause corruption of the DSDT if the object type being stored was
  7459. the same as the target object type and the length of the object
  7460. being stored was equal to or smaller than the original (existing)
  7461. target object.  This was seen to cause corruption of battery _BIF
  7462. buffers if the _BIF method modified the buffer on the fly.
  7463.  
  7464. Fixed a problem where an internal error was generated if a control
  7465. method invocation was used in an OperationRegion, Buffer, or
  7466. Package declaration.  This was caused by the deferred parsing of
  7467. the control method and thus the deferred creation of the internal
  7468. method object.  The solution to this problem was to create the
  7469. internal method object at the moment the method is encountered in
  7470. the first pass - so that subsequent references to the method will
  7471. able to obtain the required parameter count and thus properly
  7472. parse the method invocation.  This problem presented itself as an
  7473. AE_AML_INTERNAL during the pass 1 parse phase during table load.
  7474.  
  7475. Fixed a problem where the internal String object copy routine did
  7476. not always allocate sufficient memory for the target String object
  7477. and caused memory corruption.  This problem was seen to cause
  7478. "Allocation already present in list!" errors as memory allocation
  7479. became corrupted.
  7480.  
  7481. Implemented a new function for the evaluation of namespace objects
  7482. that allows the specification of the allowable return object
  7483. types.  This simplifies a lot of code that checks for a return
  7484. object of one or more specific objects returned from the
  7485. evaluation (such as _STA, etc.)  This may become and external
  7486. function if it would be useful to ACPI-related drivers.
  7487.  
  7488. Completed another round of prefixing #defines with "ACPI_" for
  7489. clarity.
  7490.  
  7491. Completed additional code restructuring to allow more modular
  7492. linking for iASL compiler and AcpiExec.  Several files were split
  7493. creating new files.  New files:  nsparse.c dsinit.c evgpe.c
  7494.  
  7495. Implemented an abort mechanism to terminate an executing control
  7496. method via the AML debugger.  This feature is useful for debugging
  7497. control methods that depend (wait) for specific hardware
  7498. responses.
  7499.  
  7500. Code and Data Size: Current core subsystem library sizes are shown
  7501. below.  These are the code and data sizes for the acpica.lib
  7502. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7503. values do not include any ACPI driver or OSPM code.  The debug
  7504. version of the code includes the debug output trace mechanism and
  7505. has a much larger code and data size.  Note that these values will
  7506. vary depending on the efficiency of the compiler and the compiler
  7507. options used during generation.
  7508.  
  7509.   Previous Release
  7510.     Non-Debug Version:  71.4K Code,   9.0K Data,   80.4K Total
  7511.     Debug Version:     152.9K Code,  63.3K Data,  216.2K Total
  7512.   Current Release:
  7513.     Non-Debug Version:  72.1K Code,   9.5K Data,   81.6K Total
  7514.     Debug Version:     152.7K Code,  62.7K Data,  215.4K Total
  7515.  
  7516.  
  7517. 2) iASL Compiler/Disassembler
  7518.  
  7519. Fixed a compiler code generation problem for "Interrupt" Resource
  7520. Descriptors.  If specified in the ASL, the optional "Resource
  7521. Source Index" and "Resource Source" fields were not inserted into
  7522. the correct location within the AML resource descriptor, creating
  7523. an invalid descriptor.
  7524.  
  7525. Fixed a disassembler problem for "Interrupt" resource descriptors.
  7526. The optional "Resource Source Index" and "Resource Source" fields
  7527. were ignored.
  7528.  
  7529.  
  7530. ----------------------------------------
  7531. 22 November 2002.  Summary of changes for version 20021122.
  7532.  
  7533.  
  7534. 1) ACPI CA Core Subsystem:
  7535.  
  7536. Fixed a reported problem where an object stored to a Method Local
  7537. or Arg was not copied to a new object during the store - the
  7538. object pointer was simply copied to the Local/Arg.  This caused
  7539. all subsequent operations on the Local/Arg to also affect the
  7540. original source of the store operation.
  7541.  
  7542. Fixed a problem where a store operation to a Method Local or Arg
  7543. was not completed properly if the Local/Arg contained a reference
  7544. (from RefOf) to a named field.  The general-purpose store-to-
  7545. namespace-node code is now used so that this case is handled
  7546. automatically.
  7547.  
  7548. Fixed a problem where the internal object copy routine would cause
  7549. a protection fault if the object being copied was a Package and
  7550. contained either 1) a NULL package element or 2) a nested sub-
  7551. package.
  7552.  
  7553. Fixed a problem with the GPE initialization that resulted from an
  7554. ambiguity in the ACPI specification.  One section of the
  7555. specification states that both the address and length of the GPE
  7556. block must be zero if the block is not supported.  Another section
  7557. implies that only the address need be zero if the block is not
  7558. supported.  The code has been changed so that both the address and
  7559. the length must be non-zero to indicate a valid GPE block (i.e.,
  7560. if either the address or the length is zero, the GPE block is
  7561. invalid.)
  7562.  
  7563. Code and Data Size: Current core subsystem library sizes are shown
  7564. below.  These are the code and data sizes for the acpica.lib
  7565. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7566. values do not include any ACPI driver or OSPM code.  The debug
  7567. version of the code includes the debug output trace mechanism and
  7568. has a much larger code and data size.  Note that these values will
  7569. vary depending on the efficiency of the compiler and the compiler
  7570. options used during generation.
  7571.  
  7572.   Previous Release
  7573.     Non-Debug Version:  71.3K Code,   9.0K Data,   80.3K Total
  7574.     Debug Version:     152.7K Code,  63.2K Data,  215.5K Total
  7575.   Current Release:
  7576.     Non-Debug Version:  71.4K Code,   9.0K Data,   80.4K Total
  7577.     Debug Version:     152.9K Code,  63.3K Data,  216.2K Total
  7578.  
  7579.  
  7580. 2) Linux
  7581.  
  7582. Cleaned up EC driver. Exported an external EC read/write
  7583. interface. By going through this, other drivers (most notably
  7584. sonypi) will be able to serialize access to the EC.
  7585.  
  7586.  
  7587. 3) iASL Compiler/Disassembler
  7588.  
  7589. Implemented support to optionally generate include files for both
  7590. ASM and C (the -i switch).  This simplifies BIOS development by
  7591. automatically creating include files that contain external
  7592. declarations for the symbols that are created within the
  7593.  
  7594. (optionally generated) ASM and C AML source files.
  7595.  
  7596.  
  7597. ----------------------------------------
  7598. 15 November 2002.  Summary of changes for version 20021115.
  7599.  
  7600. 1) ACPI CA Core Subsystem:
  7601.  
  7602. Fixed a memory leak problem where an error during resolution of
  7603.  
  7604. method arguments during a method invocation from another method
  7605. failed to cleanup properly by deleting all successfully resolved
  7606. argument objects.
  7607.  
  7608. Fixed a problem where the target of the Index() operator was not
  7609. correctly constructed if the source object was a package.  This
  7610. problem has not been detected because the use of a target operand
  7611. with Index() is very rare.
  7612.  
  7613. Fixed a problem with the Index() operator where an attempt was
  7614. made to delete the operand objects twice.
  7615.  
  7616. Fixed a problem where an attempt was made to delete an operand
  7617. twice during execution of the CondRefOf() operator if the target
  7618. did not exist.
  7619.  
  7620. Implemented the first of perhaps several internal create object
  7621. functions that create and initialize a specific object type.  This
  7622. consolidates duplicated code wherever the object is created, thus
  7623. shrinking the size of the subsystem.
  7624.  
  7625. Implemented improved debug/error messages for errors that occur
  7626. during nested method invocations.  All executing method pathnames
  7627. are displayed (with the error) as the call stack is unwound - thus
  7628. simplifying debug.
  7629.  
  7630. Fixed a problem introduced in the 10/02 release that caused
  7631. premature deletion of a buffer object if a buffer was used as an
  7632. ASL operand where an integer operand is required (Thus causing an
  7633. implicit object conversion from Buffer to Integer.)  The change in
  7634. the 10/02 release was attempting to fix a memory leak (albeit
  7635. incorrectly.)
  7636.  
  7637. Code and Data Size: Current core subsystem library sizes are shown
  7638. below.  These are the code and data sizes for the acpica.lib
  7639. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7640. values do not include any ACPI driver or OSPM code.  The debug
  7641. version of the code includes the debug output trace mechanism and
  7642. has a much larger code and data size.  Note that these values will
  7643. vary depending on the efficiency of the compiler and the compiler
  7644. options used during generation.
  7645.  
  7646.   Previous Release
  7647.     Non-Debug Version:  71.9K Code,   9.1K Data,   81.0K Total
  7648.     Debug Version:     153.1K Code,  63.3K Data,  216.4K Total
  7649.   Current Release:
  7650.     Non-Debug Version:  71.3K Code,   9.0K Data,   80.3K Total
  7651.     Debug Version:     152.7K Code,  63.2K Data,  215.5K Total
  7652.  
  7653.  
  7654. 2) Linux
  7655.  
  7656. Changed the implementation of the ACPI semaphores to use down()
  7657. instead of down_interruptable().  It is important that the
  7658. execution of ACPI control methods not be interrupted by signals.
  7659. Methods must run to completion, or the system may be left in an
  7660. unknown/unstable state.
  7661.  
  7662. Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
  7663. (Shawn Starr)
  7664.  
  7665.  
  7666. 3) iASL Compiler/Disassembler
  7667.  
  7668.  
  7669. Changed the default location of output files.  All output files
  7670. are now placed in the current directory by default instead of in
  7671. the directory of the source file.  This change may affect some
  7672. existing makefiles, but it brings the behavior of the compiler in
  7673. line with other similar tools.  The location of the output files
  7674. can be overridden with the -p command line switch.
  7675.  
  7676.  
  7677. ----------------------------------------
  7678. 11 November 2002.  Summary of changes for version 20021111.
  7679.  
  7680.  
  7681. 0) ACPI Specification 2.0B is released and is now available at:
  7682. http://www.acpi.info/index.html
  7683.  
  7684.  
  7685. 1) ACPI CA Core Subsystem:
  7686.  
  7687. Implemented support for the ACPI 2.0 SMBus Operation Regions.
  7688. This includes the early detection and handoff of the request to
  7689. the SMBus region handler (avoiding all of the complex field
  7690. support code), and support for the bidirectional return packet
  7691. from an SMBus write operation.  This paves the way for the
  7692. development of SMBus drivers in each host operating system.
  7693.  
  7694. Fixed a problem where the semaphore WAIT_FOREVER constant was
  7695. defined as 32 bits, but must be 16 bits according to the ACPI
  7696. specification.  This had the side effect of causing ASL
  7697. Mutex/Event timeouts even though the ASL code requested a wait
  7698. forever.  Changed all internal references to the ACPI timeout
  7699. parameter to 16 bits to prevent future problems.  Changed the name
  7700. of WAIT_FOREVER to ACPI_WAIT_FOREVER.
  7701.  
  7702. Code and Data Size: Current core subsystem library sizes are shown
  7703. below.  These are the code and data sizes for the acpica.lib
  7704. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7705. values do not include any ACPI driver or OSPM code.  The debug
  7706. version of the code includes the debug output trace mechanism and
  7707. has a much larger code and data size.  Note that these values will
  7708. vary depending on the efficiency of the compiler and the compiler
  7709. options used during generation.
  7710.  
  7711.   Previous Release
  7712.     Non-Debug Version:  71.4K Code,   9.0K Data,   80.4K Total
  7713.     Debug Version:     152.3K Code,  63.0K Data,  215.3K Total
  7714.   Current Release:
  7715.     Non-Debug Version:  71.9K Code,   9.1K Data,   81.0K Total
  7716.     Debug Version:     153.1K Code,  63.3K Data,  216.4K Total
  7717.  
  7718.  
  7719. 2) Linux
  7720.  
  7721. Module loading/unloading fixes (John Cagle)
  7722.  
  7723.  
  7724. 3) iASL Compiler/Disassembler
  7725.  
  7726. Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
  7727.  
  7728. Implemented support for the disassembly of all SMBus protocol
  7729. keywords (SMBQuick, SMBWord, etc.)
  7730.  
  7731. ----------------------------------------
  7732. 01 November 2002.  Summary of changes for version 20021101.
  7733.  
  7734.  
  7735. 1) ACPI CA Core Subsystem:
  7736.  
  7737. Fixed a problem where platforms that have a GPE1 block but no GPE0
  7738. block were not handled correctly.  This resulted in a "GPE
  7739. overlap" error message.  GPE0 is no longer required.
  7740.  
  7741. Removed code added in the previous release that inserted nodes
  7742. into the namespace in alphabetical order.  This caused some side-
  7743. effects on various machines.  The root cause of the problem is
  7744. still under investigation since in theory, the internal ordering
  7745. of the namespace nodes should not matter.
  7746.  
  7747.  
  7748. Enhanced error reporting for the case where a named object is not
  7749. found during control method execution.  The full ACPI namepath
  7750. (name reference) of the object that was not found is displayed in
  7751. this case.
  7752.  
  7753. Note: as a result of the overhaul of the namespace object types in
  7754. the previous release, the namespace nodes for the predefined
  7755. scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
  7756. instead of ACPI_TYPE_ANY.  This simplifies the namespace
  7757. management code but may affect code that walks the namespace tree
  7758. looking for specific object types.
  7759.  
  7760. Code and Data Size: Current core subsystem library sizes are shown
  7761. below.  These are the code and data sizes for the acpica.lib
  7762. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7763. values do not include any ACPI driver or OSPM code.  The debug
  7764. version of the code includes the debug output trace mechanism and
  7765. has a much larger code and data size.  Note that these values will
  7766. vary depending on the efficiency of the compiler and the compiler
  7767. options used during generation.
  7768.  
  7769.   Previous Release
  7770.     Non-Debug Version:  70.7K Code,   8.6K Data,   79.3K Total
  7771.     Debug Version:     151.7K Code,  62.4K Data,  214.1K Total
  7772.   Current Release:
  7773.     Non-Debug Version:  71.4K Code,   9.0K Data,   80.4K Total
  7774.     Debug Version:     152.3K Code,  63.0K Data,  215.3K Total
  7775.  
  7776.  
  7777. 2) Linux
  7778.  
  7779. Fixed a problem introduced in the previous release where the
  7780. Processor and Thermal objects were not recognized and installed in
  7781. /proc.  This was related to the scope type change described above.
  7782.  
  7783.  
  7784. 3) iASL Compiler/Disassembler
  7785.  
  7786. Implemented the -g option to get all of the required ACPI tables
  7787. from the registry and save them to files (Windows version of the
  7788. compiler only.)  The required tables are the FADT, FACS, and DSDT.
  7789.  
  7790. Added ACPI table checksum validation during table disassembly in
  7791. order to catch corrupted tables.
  7792.  
  7793.  
  7794. ----------------------------------------
  7795. 22 October 2002.  Summary of changes for version 20021022.
  7796.  
  7797. 1) ACPI CA Core Subsystem:
  7798.  
  7799. Implemented a restriction on the Scope operator that the target
  7800. must already exist in the namespace at the time the operator is
  7801. encountered (during table load or method execution).  In other
  7802. words, forward references are not allowed and Scope() cannot
  7803. create a new object. This changes the previous behavior where the
  7804. interpreter would create the name if not found.  This new behavior
  7805. correctly enables the search-to-root algorithm during namespace
  7806. lookup of the target name.  Because of this upsearch, this fixes
  7807. the known Compaq _SB_.OKEC problem and makes both the AML
  7808. interpreter and iASL compiler compatible with other ACPI
  7809. implementations.
  7810.  
  7811. Completed a major overhaul of the internal ACPI object types for
  7812. the ACPI Namespace and the associated operand objects.  Many of
  7813. these types had become obsolete with the introduction of the two-
  7814. pass namespace load.  This cleanup simplifies the code and makes
  7815. the entire namespace load mechanism much clearer and easier to
  7816. understand.
  7817.  
  7818. Improved debug output for tracking scope opening/closing to help
  7819. diagnose scoping issues.  The old scope name as well as the new
  7820. scope name are displayed.  Also improved error messages for
  7821. problems with ASL Mutex objects and error messages for GPE
  7822. problems.
  7823.  
  7824. Cleaned up the namespace dump code, removed obsolete code.
  7825.  
  7826. All string output (for all namespace/object dumps) now uses the
  7827. common ACPI string output procedure which handles escapes properly
  7828. and does not emit non-printable characters.
  7829.  
  7830. Fixed some issues with constants in the 64-bit version of the
  7831. local C library (utclib.c)
  7832.  
  7833.  
  7834. 2) Linux
  7835.  
  7836. EC Driver:  No longer attempts to acquire the Global Lock at
  7837. interrupt level.
  7838.  
  7839.  
  7840. 3) iASL Compiler/Disassembler
  7841.  
  7842. Implemented ACPI 2.0B grammar change that disallows all Type 1 and
  7843. 2 opcodes outside of a control method.  This means that the
  7844. "executable" operators (versus the "namespace" operators) cannot
  7845. be used at the table level; they can only be used within a control
  7846. method.
  7847.  
  7848. Implemented the restriction on the Scope() operator where the
  7849. target must already exist in the namespace at the time the
  7850. operator is encountered (during ASL compilation). In other words,
  7851. forward references are not allowed and Scope() cannot create a new
  7852. object.  This makes the iASL compiler compatible with other ACPI
  7853. implementations and makes the Scope() implementation adhere to the
  7854. ACPI specification.
  7855.  
  7856. Fixed a problem where namepath optimization for the Alias operator
  7857. was optimizing the wrong path (of the two namepaths.)  This caused
  7858. a "Missing alias link" error message.
  7859.  
  7860. Fixed a problem where an "unknown reserved name" warning could be
  7861. incorrectly generated for names like "_SB" when the trailing
  7862. underscore is not used in the original ASL.
  7863.  
  7864. Fixed a problem where the reserved name check did not handle
  7865. NamePaths with multiple NameSegs correctly.  The first nameseg of
  7866. the NamePath was examined instead of the last NameSeg.
  7867.  
  7868.  
  7869. ----------------------------------------
  7870.  
  7871. 02 October 2002.  Summary of changes for this release.
  7872.  
  7873.  
  7874. 1) ACPI CA Core Subsystem version 20021002:
  7875.  
  7876. Fixed a problem where a store/copy of a string to an existing
  7877. string did not always set the string length properly in the String
  7878. object.
  7879.  
  7880. Fixed a reported problem with the ToString operator where the
  7881. behavior was identical to the ToHexString operator instead of just
  7882. simply converting a raw buffer to a string data type.
  7883.  
  7884. Fixed a problem where CopyObject and the other "explicit"
  7885. conversion operators were not updating the internal namespace node
  7886. type as part of the store operation.
  7887.  
  7888. Fixed a memory leak during implicit source operand conversion
  7889. where the original object was not deleted if it was converted to a
  7890. new object of a different type.
  7891.  
  7892. Enhanced error messages for all problems associated with namespace
  7893. lookups.  Common procedure generates and prints the lookup name as
  7894. well as the formatted status.
  7895.  
  7896. Completed implementation of a new design for the Alias support
  7897. within the namespace.  The existing design did not handle the case
  7898. where a new object was assigned to one of the two names due to the
  7899. use of an explicit conversion operator, resulting in the two names
  7900. pointing to two different objects.  The new design simply points
  7901. the Alias name to the original name node - not to the object.
  7902. This results in a level of indirection that must be handled in the
  7903. name resolution mechanism.
  7904.  
  7905. Code and Data Size: Current core subsystem library sizes are shown
  7906. below.  These are the code and data sizes for the acpica.lib
  7907. produced by the Microsoft Visual C++ 6.0 compiler, and these
  7908. values do not include any ACPI driver or OSPM code.  The debug
  7909. version of the code includes the debug output trace mechanism and
  7910. has a larger code and data size.  Note that these values will vary
  7911. depending on the efficiency of the compiler and the compiler
  7912. options used during generation.
  7913.  
  7914.   Previous Release
  7915.     Non-Debug Version:  69.6K Code,   8.3K Data,   77.9K Total
  7916.     Debug Version:     150.0K Code,  61.7K Data,  211.7K Total
  7917.   Current Release:
  7918.     Non-Debug Version:  70.7K Code,   8.6K Data,   79.3K Total
  7919.     Debug Version:     151.7K Code,  62.4K Data,  214.1K Total
  7920.  
  7921.  
  7922. 2) Linux
  7923.  
  7924. Initialize thermal driver's timer before it is used. (Knut
  7925. Neumann)
  7926.  
  7927. Allow handling negative celsius values. (Kochi Takayoshi)
  7928.  
  7929. Fix thermal management and make trip points. R/W (Pavel Machek)
  7930.  
  7931. Fix /proc/acpi/sleep. (P. Christeas)
  7932.  
  7933. IA64 fixes. (David Mosberger)
  7934.  
  7935. Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
  7936.  
  7937. Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
  7938. Brodowski)
  7939.  
  7940.  
  7941. 3) iASL Compiler/Disassembler
  7942.  
  7943. Clarified some warning/error messages.
  7944.  
  7945.  
  7946. ----------------------------------------
  7947. 18 September 2002.  Summary of changes for this release.
  7948.  
  7949.  
  7950. 1) ACPI CA Core Subsystem version 20020918:
  7951.  
  7952. Fixed a reported problem with reference chaining (via the Index()
  7953. and RefOf() operators) in the ObjectType() and SizeOf() operators.
  7954. The definition of these operators includes the dereferencing of
  7955. all chained references to return information on the base object.
  7956.  
  7957. Fixed a problem with stores to indexed package elements - the
  7958. existing code would not complete the store if an "implicit
  7959. conversion" was not performed.  In other words, if the existing
  7960. object (package element) was to be replaced completely, the code
  7961. didn't handle this case.
  7962.  
  7963. Relaxed typechecking on the ASL "Scope" operator to allow the
  7964. target name to refer to an object of type Integer, String, or
  7965. Buffer, in addition to the scoping object types (Device,
  7966. predefined Scopes, Processor, PowerResource, and ThermalZone.)
  7967. This allows existing AML code that has workarounds for a bug in
  7968. Windows to function properly.  A warning is issued, however.  This
  7969. affects both the AML interpreter and the iASL compiler. Below is
  7970. an example of this type of ASL code:
  7971.  
  7972.       Name(DEB,0x00)
  7973.       Scope(DEB)
  7974.       {
  7975.  
  7976. Fixed some reported problems with 64-bit integer support in the
  7977. local implementation of C library functions (clib.c)
  7978.  
  7979.  
  7980. 2) Linux
  7981.  
  7982. Use ACPI fix map region instead of IOAPIC region, since it is
  7983. undefined in non-SMP.
  7984.  
  7985. Ensure that the SCI has the proper polarity and trigger, even on
  7986. systems that do not have an interrupt override entry in the MADT.
  7987.  
  7988. 2.5 big driver reorganization (Pat Mochel)
  7989.  
  7990. Use early table mapping code from acpitable.c (Andi Kleen)
  7991.  
  7992. New blacklist entries (Andi Kleen)
  7993.  
  7994. Blacklist improvements. Split blacklist code out into a separate
  7995. file. Move checking the blacklist to very early. Previously, we
  7996. would use ACPI tables, and then halfway through init, check the
  7997. blacklist -- too late. Now, it's early enough to completely fall-
  7998. back to non-ACPI.
  7999.  
  8000.  
  8001. 3) iASL Compiler/Disassembler version 20020918:
  8002.  
  8003. Fixed a problem where the typechecking code didn't know that an
  8004. alias could point to a method.  In other words, aliases were not
  8005. being dereferenced during typechecking.
  8006.  
  8007.  
  8008. ----------------------------------------
  8009. 29 August 2002.  Summary of changes for this release.
  8010.  
  8011. 1) ACPI CA Core Subsystem Version 20020829:
  8012.  
  8013. If the target of a Scope() operator already exists, it must be an
  8014. object type that actually opens a scope -- such as a Device,
  8015. Method, Scope, etc.  This is a fatal runtime error.  Similar error
  8016. check has been added to the iASL compiler also.
  8017.  
  8018. Tightened up the namespace load to disallow multiple names in the
  8019. same scope.  This previously was allowed if both objects were of
  8020. the same type.  (i.e., a lookup was the same as entering a new
  8021. name).
  8022.  
  8023.  
  8024. 2) Linux
  8025.  
  8026. Ensure that the ACPI interrupt has the proper trigger and
  8027. polarity.
  8028.  
  8029. local_irq_disable is extraneous. (Matthew Wilcox)
  8030.  
  8031. Make "acpi=off" actually do what it says, and not use the ACPI
  8032. interpreter *or* the tables.
  8033.  
  8034. Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
  8035. Takayoshi)
  8036.  
  8037.  
  8038. 3) iASL Compiler/Disassembler  Version 20020829:
  8039.  
  8040. Implemented namepath optimization for name declarations.  For
  8041. example, a declaration like "Method (\_SB_.ABCD)" would get
  8042. optimized to "Method (ABCD)" if the declaration is within the
  8043. \_SB_ scope.  This optimization is in addition to the named
  8044. reference path optimization first released in the previous
  8045. version. This would seem to complete all possible optimizations
  8046. for namepaths within the ASL/AML.
  8047.  
  8048. If the target of a Scope() operator already exists, it must be an
  8049. object type that actually opens a scope -- such as a Device,
  8050. Method, Scope, etc.
  8051.  
  8052. Implemented a check and warning for unreachable code in the same
  8053. block below a Return() statement.
  8054.  
  8055. Fixed a problem where the listing file was not generated if the
  8056. compiler aborted if the maximum error count was exceeded (200).
  8057.  
  8058. Fixed a problem where the typechecking of method return values was
  8059. broken.  This includes the check for a return value when the
  8060. method is invoked as a TermArg (a return value is expected.)
  8061.  
  8062. Fixed a reported problem where EOF conditions during a quoted
  8063. string or comment caused a fault.
  8064.  
  8065.  
  8066. ----------------------------------------
  8067. 15 August 2002.  Summary of changes for this release.
  8068.  
  8069. 1) ACPI CA Core Subsystem Version 20020815:
  8070.  
  8071. Fixed a reported problem where a Store to a method argument that
  8072. contains a reference did not perform the indirect store correctly.
  8073. This problem was created during the conversion to the new
  8074. reference object model - the indirect store to a method argument
  8075. code was not updated to reflect the new model.
  8076.  
  8077. Reworked the ACPI mode change code to better conform to ACPI 2.0,
  8078. handle corner cases, and improve code legibility (Kochi Takayoshi)
  8079.  
  8080. Fixed a problem with the pathname parsing for the carat (^)
  8081. prefix.  The heavy use of the carat operator by the new namepath
  8082. optimization in the iASL compiler uncovered a problem with the AML
  8083. interpreter handling of this prefix.  In the case where one or
  8084. more carats precede a single nameseg, the nameseg was treated as
  8085. standalone and the search rule (to root) was inadvertently
  8086. applied.  This could cause both the iASL compiler and the
  8087. interpreter to find the wrong object or to miss the error that
  8088. should occur if the object does not exist at that exact pathname.
  8089.  
  8090. Found and fixed the problem where the HP Pavilion DSDT would not
  8091. load.  This was a relatively minor tweak to the table loading code
  8092. (a problem caused by the unexpected encounter with a method
  8093. invocation not within a control method), but it does not solve the
  8094. overall issue of the execution of AML code at the table level.
  8095. This investigation is still ongoing.
  8096.  
  8097. Code and Data Size: Current core subsystem library sizes are shown
  8098. below.  These are the code and data sizes for the acpica.lib
  8099. produced by the Microsoft Visual C++ 6.0 compiler, and these
  8100. values do not include any ACPI driver or OSPM code.  The debug
  8101. version of the code includes the debug output trace mechanism and
  8102. has a larger code and data size.  Note that these values will vary
  8103. depending on the efficiency of the compiler and the compiler
  8104. options used during generation.
  8105.  
  8106.   Previous Release
  8107.     Non-Debug Version:  69.1K Code,   8.2K Data,   77.3K Total
  8108.     Debug Version:     149.4K Code,  61.6K Data,  211.0K Total
  8109.   Current Release:
  8110.     Non-Debug Version:  69.6K Code,   8.3K Data,   77.9K Total
  8111.     Debug Version:     150.0K Code,  61.7K Data,  211.7K Total
  8112.  
  8113.  
  8114. 2) Linux
  8115.  
  8116. Remove redundant slab.h include (Brad Hards)
  8117.  
  8118. Fix several bugs in thermal.c (Herbert Nachtnebel)
  8119.  
  8120. Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
  8121.  
  8122. Change acpi_system_suspend to use updated irq functions (Pavel
  8123. Machek)
  8124.  
  8125. Export acpi_get_firmware_table (Matthew Wilcox)
  8126.  
  8127. Use proper root proc entry for ACPI (Kochi Takayoshi)
  8128.  
  8129. Fix early-boot table parsing (Bjorn Helgaas)
  8130.  
  8131.  
  8132. 3) iASL Compiler/Disassembler
  8133.  
  8134. Reworked the compiler options to make them more consistent and to
  8135. use two-letter options where appropriate.  We were running out of
  8136. sensible letters.   This may break some makefiles, so check the
  8137. current options list by invoking the compiler with no parameters.
  8138.  
  8139. Completed the design and implementation of the ASL namepath
  8140. optimization option for the compiler.  This option optimizes all
  8141. references to named objects to the shortest possible path.  The
  8142. first attempt tries to utilize a single nameseg (4 characters) and
  8143. the "search-to-root" algorithm used by the interpreter.  If that
  8144. cannot be used (because either the name is not in the search path
  8145. or there is a conflict with another object with the same name),
  8146. the pathname is optimized using the carat prefix (usually a
  8147. shorter string than specifying the entire path from the root.)
  8148.  
  8149. Implemented support to obtain the DSDT from the Windows registry
  8150. (when the disassembly option is specified with no input file).
  8151. Added this code as the implementation for AcpiOsTableOverride in
  8152. the Windows OSL.  Migrated the 16-bit code (used in the AcpiDump
  8153. utility) to scan memory for the DSDT to the AcpiOsTableOverride
  8154. function in the DOS OSL to make the disassembler truly OS
  8155. independent.
  8156.  
  8157. Implemented a new option to disassemble and compile in one step.
  8158. When used without an input filename, this option will grab the
  8159. DSDT from the local machine, disassemble it, and compile it in one
  8160. step.
  8161.  
  8162. Added a warning message for invalid escapes (a backslash followed
  8163. by any character other than the allowable escapes).  This catches
  8164. the quoted string error "\_SB_" (which should be "\\_SB_" ).
  8165.  
  8166. Also, there are numerous instances in the ACPI specification where
  8167. this error occurs.
  8168.  
  8169. Added a compiler option to disable all optimizations.  This is
  8170. basically the "compatibility mode" because by using this option,
  8171. the AML code will come out exactly the same as other ASL
  8172. compilers.
  8173.  
  8174. Added error messages for incorrectly ordered dependent resource
  8175. functions.  This includes: missing EndDependentFn macro at end of
  8176. dependent resource list, nested dependent function macros (both
  8177. start and end), and missing StartDependentFn macro.  These are
  8178. common errors that should be caught at compile time.
  8179.  
  8180. Implemented _OSI support for the disassembler and compiler.  _OSI
  8181. must be included in the namespace for proper disassembly (because
  8182. the disassembler must know the number of arguments.)
  8183.  
  8184. Added an "optimization" message type that is optional (off by
  8185. default).  This message is used for all optimizations - including
  8186. constant folding, integer optimization, and namepath optimization.
  8187.  
  8188. ----------------------------------------
  8189. 25 July 2002.  Summary of changes for this release.
  8190.  
  8191.  
  8192. 1) ACPI CA Core Subsystem Version 20020725:
  8193.  
  8194. The AML Disassembler has been enhanced to produce compilable ASL
  8195. code and has been integrated into the iASL compiler (see below) as
  8196. well as the single-step disassembly for the AML debugger and the
  8197. disassembler for the AcpiDump utility.  All ACPI 2.0A opcodes,
  8198. resource templates and macros are fully supported.  The
  8199. disassembler has been tested on over 30 different AML files,
  8200. producing identical AML when the resulting disassembled ASL file
  8201. is recompiled with the same ASL compiler.
  8202.  
  8203. Modified the Resource Manager to allow zero interrupts and zero
  8204. dma channels during the GetCurrentResources call.  This was
  8205. causing problems on some platforms.
  8206.  
  8207. Added the AcpiOsRedirectOutput interface to the OSL to simplify
  8208. output redirection for the AcpiOsPrintf and AcpiOsVprintf
  8209. interfaces.
  8210.  
  8211. Code and Data Size: Current core subsystem library sizes are shown
  8212. below.  These are the code and data sizes for the acpica.lib
  8213. produced by the Microsoft Visual C++ 6.0 compiler, and these
  8214. values do not include any ACPI driver or OSPM code.  The debug
  8215. version of the code includes the debug output trace mechanism and
  8216. has a larger code and data size.  Note that these values will vary
  8217. depending on the efficiency of the compiler and the compiler
  8218. options used during generation.
  8219.  
  8220.   Previous Release
  8221.     Non-Debug Version:  68.7K Code,   7.4K Data,   76.1K Total
  8222.     Debug Version:     142.9K Code,  58.7K Data,  201.6K Total
  8223.   Current Release:
  8224.     Non-Debug Version:  69.1K Code,   8.2K Data,   77.3K Total
  8225.     Debug Version:     149.4K Code,  61.6K Data,  211.0K Total
  8226.  
  8227.  
  8228. 2) Linux
  8229.  
  8230. Fixed a panic in the EC driver (Dominik Brodowski)
  8231.  
  8232. Implemented checksum of the R/XSDT itself during Linux table scan
  8233. (Richard Schaal)
  8234.  
  8235.  
  8236. 3) iASL compiler
  8237.  
  8238. The AML disassembler is integrated into the compiler.  The "-d"
  8239. option invokes the disassembler  to completely disassemble an
  8240. input AML file, producing as output a text ASL file with the
  8241. extension ".dsl" (to avoid name collisions with existing .asl
  8242. source files.)  A future enhancement will allow the disassembler
  8243. to obtain the BIOS DSDT from the registry under Windows.
  8244.  
  8245. Fixed a problem with the VendorShort and VendorLong resource
  8246. descriptors where an invalid AML sequence was created.
  8247.  
  8248. Implemented a fix for BufferData term in the ASL parser.  It was
  8249. inadvertently defined twice, allowing invalid syntax to pass and
  8250. causing reduction conflicts.
  8251.  
  8252. Fixed a problem where the Ones opcode could get converted to a
  8253. value of zero if "Ones" was used where a byte, word or dword value
  8254. was expected.  The 64-bit value is now truncated to the correct
  8255. size with the correct value.
  8256.  
  8257.  
  8258.  
  8259. ----------------------------------------
  8260. 02 July 2002.  Summary of changes for this release.
  8261.  
  8262.  
  8263. 1) ACPI CA Core Subsystem Version 20020702:
  8264.  
  8265. The Table Manager code has been restructured to add several new
  8266. features.  Tables that are not required by the core subsystem
  8267. (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
  8268. validated in any way and are returned from AcpiGetFirmwareTable if
  8269. requested.  The AcpiOsTableOverride interface is now called for
  8270. each table that is loaded by the subsystem in order to allow the
  8271. host to override any table it chooses.  Previously, only the DSDT
  8272. could be overridden.  Added one new files, tbrsdt.c and
  8273. tbgetall.c.
  8274.  
  8275. Fixed a problem with the conversion of internal package objects to
  8276. external objects (when a package is returned from a control
  8277. method.)  The return buffer length was set to zero instead of the
  8278. proper length of the package object.
  8279.  
  8280. Fixed a reported problem with the use of the RefOf and DeRefOf
  8281. operators when passing reference arguments to control methods.  A
  8282. new type of Reference object is used internally for references
  8283. produced by the RefOf operator.
  8284.  
  8285. Added additional error messages in the Resource Manager to explain
  8286. AE_BAD_DATA errors when they occur during resource parsing.
  8287.  
  8288. Split the AcpiEnableSubsystem into two primitives to enable a
  8289. finer granularity initialization sequence.  These two calls should
  8290. be called in this order: AcpiEnableSubsystem (flags),
  8291. AcpiInitializeObjects (flags).  The flags parameter remains the
  8292. same.
  8293.  
  8294.  
  8295. 2) Linux
  8296.  
  8297. Updated the ACPI utilities module to understand the new style of
  8298. fully resolved package objects that are now returned from the core
  8299. subsystem.  This eliminates errors of the form:
  8300.  
  8301.     ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
  8302.     acpi_utils-0430 [145] acpi_evaluate_reference:
  8303.         Invalid element in package (not a device reference)
  8304.  
  8305. The method evaluation utility uses the new buffer allocation
  8306. scheme instead of calling AcpiEvaluate Object twice.
  8307.  
  8308. Added support for ECDT. This allows the use of the Embedded
  8309.  
  8310. Controller before the namespace has been fully initialized, which
  8311. is necessary for ACPI 2.0 support, and for some laptops to
  8312. initialize properly. (Laptops using ECDT are still rare, so only
  8313. limited testing was performed of the added functionality.)
  8314.  
  8315. Fixed memory leaks in the EC driver.
  8316.  
  8317. Eliminated a brittle code structure in acpi_bus_init().
  8318.  
  8319. Eliminated the acpi_evaluate() helper function in utils.c. It is
  8320. no longer needed since acpi_evaluate_object can optionally
  8321. allocate memory for the return object.
  8322.  
  8323. Implemented fix for keyboard hang when getting battery readings on
  8324. some systems (Stephen White)
  8325.  
  8326. PCI IRQ routing update (Dominik Brodowski)
  8327.  
  8328. Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
  8329. support
  8330.  
  8331. ----------------------------------------
  8332. 11 June 2002.  Summary of changes for this release.
  8333.  
  8334.  
  8335. 1) ACPI CA Core Subsystem Version 20020611:
  8336.  
  8337. Fixed a reported problem where constants such as Zero and One
  8338. appearing within _PRT packages were not handled correctly within
  8339. the resource manager code.  Originally reported against the ASL
  8340. compiler because the code generator now optimizes integers to
  8341. their minimal AML representation (i.e. AML constants if possible.)
  8342. The _PRT code now handles all AML constant opcodes correctly
  8343. (Zero, One, Ones, Revision).
  8344.  
  8345. Fixed a problem with the Concatenate operator in the AML
  8346. interpreter where a buffer result object was incorrectly marked as
  8347. not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
  8348.  
  8349. All package sub-objects are now fully resolved before they are
  8350. returned from the external ACPI interfaces.  This means that name
  8351. strings are resolved to object handles, and constant operators
  8352. (Zero, One, Ones, Revision) are resolved to Integers.
  8353.  
  8354. Implemented immediate resolution of the AML Constant opcodes
  8355. (Zero, One, Ones, Revision) to Integer objects upon detection
  8356. within the AML stream. This has simplified and reduced the
  8357. generated code size of the subsystem by eliminating about 10
  8358. switch statements for these constants (which previously were
  8359. contained in Reference objects.)  The complicating issues are that
  8360. the Zero opcode is used as a "placeholder" for unspecified
  8361. optional target operands and stores to constants are defined to be
  8362. no-ops.
  8363.  
  8364. Code and Data Size: Current core subsystem library sizes are shown
  8365. below. These are the code and data sizes for the acpica.lib
  8366. produced by the Microsoft Visual C++ 6.0 compiler, and these
  8367. values do not include any ACPI driver or OSPM code.  The debug
  8368. version of the code includes the debug output trace mechanism and
  8369. has a larger code and data size.  Note that these values will vary
  8370. depending on the efficiency of the compiler and the compiler
  8371. options used during generation.
  8372.  
  8373.   Previous Release
  8374.     Non-Debug Version:  69.3K Code,   7.4K Data,   76.7K Total
  8375.     Debug Version:     143.8K Code,  58.8K Data,  202.6K Total
  8376.   Current Release:
  8377.     Non-Debug Version:  68.7K Code,   7.4K Data,   76.1K Total
  8378.     Debug Version:     142.9K Code,  58.7K Data,  201.6K Total
  8379.  
  8380.  
  8381. 2) Linux
  8382.  
  8383.  
  8384. Added preliminary support for obtaining _TRA data for PCI root
  8385. bridges (Bjorn Helgaas).
  8386.  
  8387.  
  8388. 3) iASL Compiler Version X2046:
  8389.  
  8390. Fixed a problem where the "_DDN" reserved name was defined to be a
  8391. control method with one argument.  There are no arguments, and
  8392. _DDN does not have to be a control method.
  8393.  
  8394. Fixed a problem with the Linux version of the compiler where the
  8395. source lines printed with error messages were the wrong lines.
  8396. This turned out to be the "LF versus CR/LF" difference between
  8397. Windows and Unix.  This appears to be the longstanding issue
  8398. concerning listing output and error messages.
  8399.  
  8400. Fixed a problem with the Linux version of compiler where opcode
  8401. names within error messages were wrong.  This was caused by a
  8402. slight difference in the output of the Flex tool on Linux versus
  8403. Windows.
  8404.  
  8405. Fixed a problem with the Linux compiler where the hex output files
  8406. contained some garbage data caused by an internal buffer overrun.
  8407.  
  8408.  
  8409. ----------------------------------------
  8410. 17 May 2002.  Summary of changes for this release.
  8411.  
  8412.  
  8413. 1) ACPI CA Core Subsystem Version 20020517:
  8414.  
  8415. Implemented a workaround to an BIOS bug discovered on the HP
  8416. OmniBook where the FADT revision number and the table size are
  8417. inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size).  The new
  8418. behavior is to fallback to using only the ACPI 1.0 fields of the
  8419. FADT if the table is too small to be a ACPI 2.0 table as claimed
  8420. by the revision number.  Although this is a BIOS bug, this is a
  8421. case where the workaround is simple enough and with no side
  8422. effects, so it seemed prudent to add it.  A warning message is
  8423. issued, however.
  8424.  
  8425. Implemented minimum size checks for the fixed-length ACPI tables -
  8426. - the FADT and FACS, as well as consistency checks between the
  8427. revision number and the table size.
  8428.  
  8429. Fixed a reported problem in the table override support where the
  8430. new table pointer was incorrectly treated as a physical address
  8431. instead of a logical address.
  8432.  
  8433. Eliminated the use of the AE_AML_ERROR exception and replaced it
  8434. with more descriptive codes.
  8435.  
  8436. Fixed a problem where an exception would occur if an ASL Field was
  8437. defined with no named Field Units underneath it (used by some
  8438. index fields).
  8439.  
  8440. Code and Data Size: Current core subsystem library sizes are shown
  8441. below.  These are the code and data sizes for the acpica.lib
  8442. produced by the Microsoft Visual C++ 6.0 compiler, and these
  8443. values do not include any ACPI driver or OSPM code.  The debug
  8444. version of the code includes the debug output trace mechanism and
  8445. has a larger code and data size.  Note that these values will vary
  8446. depending on the efficiency of the compiler and the compiler
  8447. options used during generation.
  8448.  
  8449.   Previous Release
  8450.     Non-Debug Version:  68.8K Code,   7.1K Data,   75.9K Total
  8451.     Debug Version:     142.9K Code,  58.4K Data,  201.3K Total
  8452.   Current Release:
  8453.     Non-Debug Version:  69.3K Code,   7.4K Data,   76.7K Total
  8454.     Debug Version:     143.8K Code,  58.8K Data,  202.6K Total
  8455.  
  8456.  
  8457.  
  8458. 2) Linux
  8459.  
  8460. Much work done on ACPI init (MADT and PCI IRQ routing support).
  8461. (Paul D. and Dominik Brodowski)
  8462.  
  8463. Fix PCI IRQ-related panic on boot (Sam Revitch)
  8464.  
  8465. Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
  8466.  
  8467. Fix "MHz" typo (Dominik Brodowski)
  8468.  
  8469. Fix RTC year 2000 issue (Dominik Brodowski)
  8470.  
  8471. Preclude multiple button proc entries (Eric Brunet)
  8472.  
  8473. Moved arch-specific code out of include/platform/aclinux.h
  8474.  
  8475. 3) iASL Compiler Version X2044:
  8476.  
  8477. Implemented error checking for the string used in the EISAID macro
  8478. (Usually used in the definition of the _HID object.)  The code now
  8479. strictly enforces the PnP format - exactly 7 characters, 3
  8480. uppercase letters and 4 hex digits.
  8481.  
  8482. If a raw string is used in the definition of the _HID object
  8483. (instead of the EISAID macro), the string must contain all
  8484. alphanumeric characters (e.g., "*PNP0011" is not allowed because
  8485. of the asterisk.)
  8486.  
  8487. Implemented checking for invalid use of ACPI reserved names for
  8488. most of the name creation operators (Name, Device, Event, Mutex,
  8489. OperationRegion, PowerResource, Processor, and ThermalZone.)
  8490. Previously, this check was only performed for control methods.
  8491.  
  8492. Implemented an additional check on the Name operator to emit an
  8493. error if a reserved name that must be implemented in ASL as a
  8494. control method is used.  We know that a reserved name must be a
  8495. method if it is defined with input arguments.
  8496.  
  8497. The warning emitted when a namespace object reference is not found
  8498. during the cross reference phase has been changed into an error.
  8499. The "External" directive should be used for names defined in other
  8500. modules.
  8501.  
  8502.  
  8503. 4) Tools and Utilities
  8504.  
  8505. The 16-bit tools (adump16 and aexec16) have been regenerated and
  8506. tested.
  8507.  
  8508. Fixed a problem with the output of both acpidump and adump16 where
  8509. the indentation of closing parentheses and brackets was not
  8510.  
  8511. aligned properly with the parent block.
  8512.  
  8513.  
  8514. ----------------------------------------
  8515. 03 May 2002.  Summary of changes for this release.
  8516.  
  8517.  
  8518. 1) ACPI CA Core Subsystem Version 20020503:
  8519.  
  8520. Added support a new OSL interface that allows the host operating
  8521.  
  8522. system software to override the DSDT found in the firmware -
  8523. AcpiOsTableOverride.  With this interface, the OSL can examine the
  8524. version of the firmware DSDT and replace it with a different one
  8525. if desired.
  8526.  
  8527. Added new external interfaces for accessing ACPI registers from
  8528. device drivers and other system software - AcpiGetRegister and
  8529. AcpiSetRegister.  This was simply an externalization of the
  8530. existing AcpiHwBitRegister interfaces.
  8531.  
  8532. Fixed a regression introduced in the previous build where the
  8533. ASL/AML CreateField operator always returned an error,
  8534. "destination must be a NS Node".
  8535.  
  8536. Extended the maximum time (before failure) to successfully enable
  8537. ACPI mode to 3 seconds.
  8538.  
  8539. Code and Data Size: Current core subsystem library sizes are shown
  8540. below.  These are the code and data sizes for the acpica.lib
  8541. produced by the Microsoft Visual C++ 6.0 compiler, and these
  8542. values do not include any ACPI driver or OSPM code.  The debug
  8543. version of the code includes the debug output trace mechanism and
  8544. has a larger code and data size.  Note that these values will vary
  8545. depending on the efficiency of the compiler and the compiler
  8546. options used during generation.
  8547.  
  8548.   Previous Release
  8549.     Non-Debug Version:  68.5K Code,   7.0K Data,   75.5K Total
  8550.     Debug Version:     142.4K Code,  58.3K Data,  200.7K Total
  8551.   Current Release:
  8552.     Non-Debug Version:  68.8K Code,   7.1K Data,   75.9K Total
  8553.     Debug Version:     142.9K Code,  58.4K Data,  201.3K Total
  8554.  
  8555.  
  8556. 2) Linux
  8557.  
  8558. Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
  8559. free. While 3 out of 4 of our in-house systems work fine, the last
  8560. one still hangs when testing the LAPIC timer.
  8561.  
  8562. Renamed many files in 2.5 kernel release to omit "acpi_" from the
  8563. name.
  8564.  
  8565. Added warning on boot for Presario 711FR.
  8566.  
  8567. Sleep improvements (Pavel Machek)
  8568.  
  8569. ACPI can now be built without CONFIG_PCI enabled.
  8570.  
  8571. IA64: Fixed memory map functions (JI Lee)
  8572.  
  8573.  
  8574. 3) iASL Compiler Version X2043:
  8575.  
  8576. Added support to allow the compiler to be integrated into the MS
  8577. VC++ development environment for one-button compilation of single
  8578. files or entire projects -- with error-to-source-line mapping.
  8579.  
  8580. Implemented support for compile-time constant folding for the
  8581. Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
  8582. specification.  This allows the ASL writer to use expressions
  8583. instead of Integer/Buffer/String constants in terms that must
  8584. evaluate to constants at compile time and will also simplify the
  8585. emitted AML in any such sub-expressions that can be folded
  8586. (evaluated at compile-time.)  This increases the size of the
  8587. compiler significantly because a portion of the ACPI CA AML
  8588. interpreter is included within the compiler in order to pre-
  8589. evaluate constant expressions.
  8590.  
  8591.  
  8592. Fixed a problem with the "Unicode" ASL macro that caused the
  8593. compiler to fault.  (This macro is used in conjunction with the
  8594. _STR reserved name.)
  8595.  
  8596. Implemented an AML opcode optimization to use the Zero, One, and
  8597. Ones opcodes where possible to further reduce the size of integer
  8598. constants and thus reduce the overall size of the generated AML
  8599. code.
  8600.  
  8601. Implemented error checking for new reserved terms for ACPI version
  8602. 2.0A.
  8603.  
  8604. Implemented the -qr option to display the current list of ACPI
  8605. reserved names known to the compiler.
  8606.  
  8607. Implemented the -qc option to display the current list of ASL
  8608. operators that are allowed within constant expressions and can
  8609. therefore be folded at compile time if the operands are constants.
  8610.  
  8611.  
  8612. 4) Documentation
  8613.  
  8614. Updated the Programmer's Reference for new interfaces, data types,
  8615. and memory allocation model options.
  8616.  
  8617. Updated the iASL Compiler User Reference to apply new format and
  8618. add information about new features and options.
  8619.  
  8620. ----------------------------------------
  8621. 19 April 2002.  Summary of changes for this release.
  8622.  
  8623. 1) ACPI CA Core Subsystem Version 20020419:
  8624.  
  8625. The source code base for the Core Subsystem has been completely
  8626. cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
  8627. versions.  The Lint option files used are included in the
  8628. /acpi/generate/lint directory.
  8629.  
  8630. Implemented enhanced status/error checking across the entire
  8631. Hardware manager subsystem.  Any hardware errors (reported from
  8632. the OSL) are now bubbled up and will abort a running control
  8633. method.
  8634.  
  8635.  
  8636. Fixed a problem where the per-ACPI-table integer width (32 or 64)
  8637. was stored only with control method nodes, causing a fault when
  8638. non-control method code was executed during table loading.  The
  8639. solution implemented uses a global variable to indicate table
  8640. width across the entire ACPI subsystem.  Therefore, ACPI CA does
  8641. not support mixed integer widths across different ACPI tables
  8642. (DSDT, SSDT).
  8643.  
  8644. Fixed a problem where NULL extended fields (X fields) in an ACPI
  8645. 2.0 ACPI FADT caused the table load to fail.  Although the
  8646. existing ACPI specification is a bit fuzzy on this topic, the new
  8647. behavior is to fall back on a ACPI 1.0 field if the corresponding
  8648. ACPI 2.0 X field is zero (even though the table revision indicates
  8649. a full ACPI 2.0 table.)  The ACPI specification will be updated to
  8650. clarify this issue.
  8651.  
  8652. Fixed a problem with the SystemMemory operation region handler
  8653. where memory was always accessed byte-wise even if the AML-
  8654. specified access width was larger than a byte.  This caused
  8655. problems on systems with memory-mapped I/O.  Memory is now
  8656. accessed with the width specified.  On systems that do not support
  8657. non-aligned transfers, a check is made to guarantee proper address
  8658. alignment before proceeding in order to avoid an AML-caused
  8659. alignment fault within the kernel.
  8660.  
  8661.  
  8662. Fixed a problem with the ExtendedIrq resource where only one byte
  8663. of the 4-byte Irq field was extracted.
  8664.  
  8665. Fixed the AcpiExDigitsNeeded() procedure to support _UID.  This
  8666. function was out of date and required a rewrite.
  8667.  
  8668. Code and Data Size: Current core subsystem library sizes are shown
  8669. below.  These are the code and data sizes for the acpica.lib
  8670. produced by the Microsoft Visual C++ 6.0 compiler, and these
  8671. values do not include any ACPI driver or OSPM code.  The debug
  8672. version of the code includes the debug output trace mechanism and
  8673. has a larger code and data size.  Note that these values will vary
  8674. depending on the efficiency of the compiler and the compiler
  8675. options used during generation.
  8676.  
  8677.   Previous Release
  8678.     Non-Debug Version:  66.6K Code,   6.5K Data,   73.1K Total
  8679.     Debug Version:     139.8K Code,  57.4K Data,  197.2K Total
  8680.   Current Release:
  8681.     Non-Debug Version:  68.5K Code,   7.0K Data,   75.5K Total
  8682.     Debug Version:     142.4K Code,  58.3K Data,  200.7K Total
  8683.  
  8684.  
  8685. 2) Linux
  8686.  
  8687. PCI IRQ routing fixes (Dominik Brodowski)
  8688.  
  8689.  
  8690. 3) iASL Compiler Version X2042:
  8691.  
  8692. Implemented an additional compile-time error check for a field
  8693. unit whose size + minimum access width would cause a run-time
  8694. access beyond the end-of-region.  Previously, only the field size
  8695. itself was checked.
  8696.  
  8697. The Core subsystem and iASL compiler now share a common parse
  8698. object in preparation for compile-time evaluation of the type
  8699. 3/4/5 ASL operators.
  8700.  
  8701.  
  8702. ----------------------------------------
  8703. Summary of changes for this release: 03_29_02
  8704.  
  8705. 1) ACPI CA Core Subsystem Version 20020329:
  8706.  
  8707. Implemented support for late evaluation of TermArg operands to
  8708. Buffer and Package objects.  This allows complex expressions to be
  8709. used in the declarations of these object types.
  8710.  
  8711. Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
  8712. 1.0, if the field was larger than 32 bits, it was returned as a
  8713. buffer - otherwise it was returned as an integer.  In ACPI 2.0,
  8714. the field is returned as a buffer only if the field is larger than
  8715. 64 bits.  The TableRevision is now considered when making this
  8716. conversion to avoid incompatibility with existing ASL code.
  8717.  
  8718. Implemented logical addressing for AcpiOsGetRootPointer.  This
  8719. allows an RSDP with either a logical or physical address.  With
  8720. this support, the host OS can now override all ACPI tables with
  8721. one logical RSDP.  Includes implementation of  "typed" pointer
  8722. support to allow a common data type for both physical and logical
  8723. pointers internally.  This required a change to the
  8724. AcpiOsGetRootPointer interface.
  8725.  
  8726. Implemented the use of ACPI 2.0 Generic Address Structures for all
  8727. GPE, Fixed Event, and PM Timer I/O.  This allows the use of memory
  8728. mapped I/O for these ACPI features.
  8729.  
  8730. Initialization now ignores not only non-required tables (All
  8731. tables other than the FADT, FACS, DSDT, and SSDTs), but also does
  8732. not validate the table headers of unrecognized tables.
  8733.  
  8734. Fixed a problem where a notify handler could only be
  8735. installed/removed on an object of type Device.  All "notify"
  8736.  
  8737. objects are now supported -- Devices, Processor, Power, and
  8738. Thermal.
  8739.  
  8740. Removed most verbosity from the ACPI_DB_INFO debug level.  Only
  8741. critical information is returned when this debug level is enabled.
  8742.  
  8743. Code and Data Size: Current core subsystem library sizes are shown
  8744. below.  These are the code and data sizes for the acpica.lib
  8745. produced by the Microsoft Visual C++ 6.0 compiler, and these
  8746. values do not include any ACPI driver or OSPM code.  The debug
  8747. version of the code includes the debug output trace mechanism and
  8748. has a larger code and data size.  Note that these values will vary
  8749. depending on the efficiency of the compiler and the compiler
  8750. options used during generation.
  8751.  
  8752.   Previous Release
  8753.     Non-Debug Version:  65.4K Code,   6.2K Data,   71.6K Total
  8754.     Debug Version:     138.0K Code,  56.6K Data,  194.6K Total
  8755.   Current Release:
  8756.     Non-Debug Version:  66.6K Code,   6.5K Data,   73.1K Total
  8757.     Debug Version:     139.8K Code,  57.4K Data,  197.2K Total
  8758.  
  8759.  
  8760. 2) Linux:
  8761.  
  8762. The processor driver (acpi_processor.c) now fully supports ACPI
  8763. 2.0-based processor performance control (e.g. Intel(R)
  8764. SpeedStep(TM) technology) Note that older laptops that only have
  8765. the Intel "applet" interface are not supported through this.  The
  8766. 'limit' and 'performance' interface (/proc) are fully functional.
  8767. [Note that basic policy for controlling performance state
  8768. transitions will be included in the next version of ospmd.]  The
  8769. idle handler was modified to more aggressively use C2, and PIIX4
  8770. errata handling underwent a complete overhaul (big thanks to
  8771. Dominik Brodowski).
  8772.  
  8773. Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
  8774. based devices in the ACPI namespace are now dynamically bound
  8775. (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
  8776. This allows, among other things, ACPI to resolve bus numbers for
  8777. subordinate PCI bridges.
  8778.  
  8779. Enhanced PCI IRQ routing to get the proper bus number for _PRT
  8780. entries defined underneath PCI bridges.
  8781.  
  8782. Added IBM 600E to bad bios list due to invalid _ADR value for
  8783. PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
  8784.  
  8785. In the process of adding full MADT support (e.g. IOAPIC) for IA32
  8786. (acpi.c, mpparse.c) -- stay tuned.
  8787.  
  8788. Added back visual differentiation between fixed-feature and
  8789. control-method buttons in dmesg.  Buttons are also subtyped (e.g.
  8790. button/power/PWRF) to simplify button identification.
  8791.  
  8792. We no longer use -Wno-unused when compiling debug. Please ignore
  8793. any "_THIS_MODULE defined but not used" messages.
  8794.  
  8795. Can now shut down the system using "magic sysrq" key.
  8796.  
  8797.  
  8798. 3) iASL Compiler version 2041:
  8799.  
  8800. Fixed a problem where conversion errors for hex/octal/decimal
  8801. constants were not reported.
  8802.  
  8803. Implemented a fix for the General Register template Address field.
  8804. This field was 8 bits when it should be 64.
  8805.  
  8806. Fixed a problem where errors/warnings were no longer being emitted
  8807. within the listing output file.
  8808.  
  8809. Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
  8810. exactly 4 characters, alphanumeric only.
  8811.  
  8812.  
  8813.  
  8814.  
  8815. ----------------------------------------
  8816. Summary of changes for this release: 03_08_02
  8817.  
  8818.  
  8819. 1) ACPI CA Core Subsystem Version 20020308:
  8820.  
  8821. Fixed a problem with AML Fields where the use of the "AccessAny"
  8822. keyword could cause an interpreter error due to attempting to read
  8823. or write beyond the end of the parent Operation Region.
  8824.  
  8825. Fixed a problem in the SystemMemory Operation Region handler where
  8826. an attempt was made to map memory beyond the end of the region.
  8827. This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
  8828. errors on some Linux systems.
  8829.  
  8830. Fixed a problem where the interpreter/namespace "search to root"
  8831. algorithm was not functioning for some object types.  Relaxed the
  8832. internal restriction on the search to allow upsearches for all
  8833. external object types as well as most internal types.
  8834.  
  8835.  
  8836. 2) Linux:
  8837.  
  8838. We now use safe_halt() macro versus individual calls to sti | hlt.
  8839.  
  8840. Writing to the processor limit interface should now work. "echo 1"
  8841. will increase the limit, 2 will decrease, and 0 will reset to the
  8842.  
  8843. default.
  8844.  
  8845.  
  8846. 3) ASL compiler:
  8847.  
  8848. Fixed segfault on Linux version.
  8849.  
  8850.  
  8851. ----------------------------------------
  8852. Summary of changes for this release: 02_25_02
  8853.  
  8854. 1) ACPI CA Core Subsystem:
  8855.  
  8856.  
  8857. Fixed a problem where the GPE bit masks were not initialized
  8858. properly, causing erratic GPE behavior.
  8859.  
  8860. Implemented limited support for multiple calling conventions.  The
  8861. code can be generated with either the VPL (variable parameter
  8862. list, or "C") convention, or the FPL (fixed parameter list, or
  8863. "Pascal") convention.  The core subsystem is about 3.4% smaller
  8864. when generated with FPL.
  8865.  
  8866.  
  8867. 2) Linux
  8868.  
  8869. Re-add some /proc/acpi/event functionality that was lost during
  8870. the rewrite
  8871.  
  8872. Resolved issue with /proc events for fixed-feature buttons showing
  8873. up as the system device.
  8874.  
  8875. Fixed checks on C2/C3 latencies to be inclusive of maximum values.
  8876.  
  8877. Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
  8878.  
  8879. Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
  8880.  
  8881. Fixed limit interface & usage to fix bugs with passive cooling
  8882. hysterisis.
  8883.  
  8884. Restructured PRT support.
  8885.  
  8886.  
  8887. ----------------------------------------
  8888. Summary of changes for this label: 02_14_02
  8889.  
  8890.  
  8891. 1) ACPI CA Core Subsystem:
  8892.  
  8893. Implemented support in AcpiLoadTable to allow loading of FACS and
  8894. FADT tables.
  8895.  
  8896. Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
  8897. been removed.  All 64-bit platforms should be migrated to the ACPI
  8898. 2.0 tables.  The actbl71.h header has been removed from the source
  8899. tree.
  8900.  
  8901. All C macros defined within the subsystem have been prefixed with
  8902. "ACPI_" to avoid collision with other system include files.
  8903.  
  8904. Removed the return value for the two AcpiOsPrint interfaces, since
  8905. it is never used and causes lint warnings for ignoring the return
  8906. value.
  8907.  
  8908. Added error checking to all internal mutex acquire and release
  8909. calls.  Although a failure from one of these interfaces is
  8910. probably a fatal system error, these checks will cause the
  8911. immediate abort of the currently executing method or interface.
  8912.  
  8913. Fixed a problem where the AcpiSetCurrentResources interface could
  8914. fault.  This was a side effect of the deployment of the new memory
  8915. allocation model.
  8916.  
  8917. Fixed a couple of problems with the Global Lock support introduced
  8918. in the last major build.  The "common" (1.0/2.0) internal FACS was
  8919. being overwritten with the FACS signature and clobbering the
  8920. Global Lock pointer.  Also, the actual firmware FACS was being
  8921. unmapped after construction of the "common" FACS, preventing
  8922. access to the actual Global Lock field within it.  The "common"
  8923. internal FACS is no longer installed as an actual ACPI table; it
  8924. is used simply as a global.
  8925.  
  8926. Code and Data Size: Current core subsystem library sizes are shown
  8927. below.  These are the code and data sizes for the acpica.lib
  8928. produced by the Microsoft Visual C++ 6.0 compiler, and these
  8929. values do not include any ACPI driver or OSPM code.  The debug
  8930. version of the code includes the debug output trace mechanism and
  8931. has a larger code and data size.  Note that these values will vary
  8932. depending on the efficiency of the compiler and the compiler
  8933. options used during generation.
  8934.  
  8935.   Previous Release (02_07_01)
  8936.     Non-Debug Version:  65.2K Code,   6.2K Data,   71.4K Total
  8937.     Debug Version:     136.9K Code,  56.4K Data,  193.3K Total
  8938.   Current Release:
  8939.     Non-Debug Version:  65.4K Code,   6.2K Data,   71.6K Total
  8940.     Debug Version:     138.0K Code,  56.6K Data,  194.6K Total
  8941.  
  8942.  
  8943. 2) Linux
  8944.  
  8945. Updated Linux-specific code for core macro and OSL interface
  8946. changes described above.
  8947.  
  8948. Improved /proc/acpi/event. It now can be opened only once and has
  8949. proper poll functionality.
  8950.  
  8951. Fixed and restructured power management (acpi_bus).
  8952.  
  8953. Only create /proc "view by type" when devices of that class exist.
  8954.  
  8955. Fixed "charging/discharging" bug (and others) in acpi_battery.
  8956.  
  8957. Improved thermal zone code.
  8958.  
  8959.  
  8960. 3) ASL Compiler, version X2039:
  8961.  
  8962.  
  8963. Implemented the new compiler restriction on ASL String hex/octal
  8964. escapes to non-null, ASCII values.  An error results if an invalid
  8965. value is used.  (This will require an ACPI 2.0 specification
  8966. change.)
  8967.  
  8968. AML object labels that are output to the optional C and ASM source
  8969. are now prefixed with both the ACPI table signature and table ID
  8970. to help guarantee uniqueness within a large BIOS project.
  8971.  
  8972.  
  8973. ----------------------------------------
  8974. Summary of changes for this label: 02_01_02
  8975.  
  8976. 1) ACPI CA Core Subsystem:
  8977.  
  8978. ACPI 2.0 support is complete in the entire Core Subsystem and the
  8979. ASL compiler. All new ACPI 2.0 operators are implemented and all
  8980. other changes for ACPI 2.0 support are complete.  With
  8981. simultaneous code and data optimizations throughout the subsystem,
  8982. ACPI 2.0 support has been implemented with almost no additional
  8983. cost in terms of code and data size.
  8984.  
  8985. Implemented a new mechanism for allocation of return buffers.  If
  8986. the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
  8987. be allocated on behalf of the caller.  Consolidated all return
  8988. buffer validation and allocation to a common procedure.  Return
  8989. buffers will be allocated via the primary OSL allocation interface
  8990. since it appears that a separate pool is not needed by most users.
  8991. If a separate pool is required for these buffers, the caller can
  8992. still use the original mechanism and pre-allocate the buffer(s).
  8993.  
  8994. Implemented support for string operands within the DerefOf
  8995. operator.
  8996.  
  8997. Restructured the Hardware and Event managers to be table driven,
  8998. simplifying the source code and reducing the amount of generated
  8999. code.
  9000.  
  9001. Split the common read/write low-level ACPI register bitfield
  9002. procedure into a separate read and write, simplifying the code
  9003. considerably.
  9004.  
  9005. Obsoleted the AcpiOsCallocate OSL interface.  This interface was
  9006. used only a handful of times and didn't have enough critical mass
  9007. for a separate interface.  Replaced with a common calloc procedure
  9008. in the core.
  9009.  
  9010. Fixed a reported problem with the GPE number mapping mechanism
  9011. that allows GPE1 numbers to be non-contiguous with GPE0.
  9012. Reorganized the GPE information and shrunk a large array that was
  9013. originally large enough to hold info for all possible GPEs (256)
  9014. to simply large enough to hold all GPEs up to the largest GPE
  9015. number on the machine.
  9016.  
  9017. Fixed a reported problem with resource structure alignment on 64-
  9018. bit platforms.
  9019.  
  9020. Changed the AcpiEnableEvent and AcpiDisableEvent external
  9021. interfaces to not require any flags for the common case of
  9022. enabling/disabling a GPE.
  9023.  
  9024. Implemented support to allow a "Notify" on a Processor object.
  9025.  
  9026. Most TBDs in comments within the source code have been resolved
  9027. and eliminated.
  9028.  
  9029.  
  9030. Fixed a problem in the interpreter where a standalone parent
  9031. prefix (^) was not handled correctly in the interpreter and
  9032. debugger.
  9033.  
  9034. Removed obsolete and unnecessary GPE save/restore code.
  9035.  
  9036. Implemented Field support in the ASL Load operator.  This allows a
  9037. table to be loaded from a named field, in addition to loading a
  9038. table directly from an Operation Region.
  9039.  
  9040. Implemented timeout and handle support in the external Global Lock
  9041. interfaces.
  9042.  
  9043. Fixed a problem in the AcpiDump utility where pathnames were no
  9044. longer being generated correctly during the dump of named objects.
  9045.  
  9046. Modified the AML debugger to give a full display of if/while
  9047. predicates instead of just one AML opcode at a time.  (The
  9048. predicate can have several nested ASL statements.)  The old method
  9049. was confusing during single stepping.
  9050.  
  9051. Code and Data Size: Current core subsystem library sizes are shown
  9052. below. These are the code and data sizes for the acpica.lib
  9053. produced by the Microsoft Visual C++ 6.0 compiler, and these
  9054. values do not include any ACPI driver or OSPM code.  The debug
  9055. version of the code includes the debug output trace mechanism and
  9056. has a larger code and data size.  Note that these values will vary
  9057. depending on the efficiency of the compiler and the compiler
  9058. options used during generation.
  9059.  
  9060.   Previous Release (12_18_01)
  9061.      Non-Debug Version:  66.1K Code,   5.5K Data,   71.6K Total
  9062.      Debug Version:     138.3K Code,  55.9K Data,  194.2K Total
  9063.    Current Release:
  9064.      Non-Debug Version:  65.2K Code,   6.2K Data,   71.4K Total
  9065.      Debug Version:     136.9K Code,  56.4K Data,  193.3K Total
  9066.  
  9067. 2) Linux
  9068.  
  9069.  Implemented fix for PIIX reverse throttling errata (Processor
  9070. driver)
  9071.  
  9072. Added new Limit interface (Processor and Thermal drivers)
  9073.  
  9074. New thermal policy (Thermal driver)
  9075.  
  9076. Many updates to /proc
  9077.  
  9078. Battery "low" event support (Battery driver)
  9079.  
  9080. Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
  9081.  
  9082. IA32 - IA64 initialization unification, no longer experimental
  9083.  
  9084. Menuconfig options redesigned
  9085.  
  9086. 3) ASL Compiler, version X2037:
  9087.  
  9088. Implemented several new output features to simplify integration of
  9089. AML code into  firmware: 1) Output the AML in C source code with
  9090. labels for each named ASL object.  The    original ASL source code
  9091. is interleaved as C comments. 2) Output the AML in ASM source code
  9092. with labels and interleaved ASL    source. 3) Output the AML in
  9093. raw hex table form, in either C or ASM.
  9094.  
  9095. Implemented support for optional string parameters to the
  9096. LoadTable operator.
  9097.  
  9098. Completed support for embedded escape sequences within string
  9099. literals.  The compiler now supports all single character escapes
  9100. as well as the Octal and Hex escapes.  Note: the insertion of a
  9101. null byte into a string literal (via the hex/octal escape) causes
  9102. the string to be immediately terminated.  A warning is issued.
  9103.  
  9104. Fixed a problem where incorrect AML was generated for the case
  9105. where an ASL namepath consists of a single parent prefix (
  9106.  
  9107. ) with no trailing name segments.
  9108.  
  9109. The compiler has been successfully generated with a 64-bit C
  9110. compiler.
  9111.  
  9112.  
  9113.  
  9114.  
  9115. ----------------------------------------
  9116. Summary of changes for this label: 12_18_01
  9117.  
  9118. 1) Linux
  9119.  
  9120. Enhanced blacklist with reason and severity fields. Any table's
  9121. signature may now be used to identify a blacklisted system.
  9122.  
  9123. Call _PIC control method to inform the firmware which interrupt
  9124. model the OS is using. Turn on any disabled link devices.
  9125.  
  9126. Cleaned up busmgr /proc error handling (Andreas Dilger)
  9127.  
  9128.  2) ACPI CA Core Subsystem:
  9129.  
  9130. Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
  9131. while loop)
  9132.  
  9133. Completed implementation of the ACPI 2.0 "Continue",
  9134. "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
  9135. operators.  All new ACPI 2.0 operators are now implemented in both
  9136. the ASL compiler and the AML interpreter.  The only remaining ACPI
  9137. 2.0 task is support for the String data type in the DerefOf
  9138. operator.  Fixed a problem with AcquireMutex where the status code
  9139. was lost if the caller had to actually wait for the mutex.
  9140.  
  9141. Increased the maximum ASL Field size from 64K bits to 4G bits.
  9142.  
  9143. Completed implementation of the external Global Lock interfaces --
  9144. AcpiAcquireGlobalLock and AcpiReleaseGlobalLock.  The Timeout and
  9145. Handler parameters were added.
  9146.  
  9147. Completed another pass at removing warnings and issues when
  9148. compiling with 64-bit compilers.  The code now compiles cleanly
  9149. with the Intel 64-bit C/C++ compiler.  Most notably, the pointer
  9150. add and subtract (diff) macros have changed considerably.
  9151.  
  9152.  
  9153. Created and deployed a new ACPI_SIZE type that is 64-bits wide on
  9154. 64-bit platforms, 32-bits on all others.  This type is used
  9155. wherever memory allocation and/or the C sizeof() operator is used,
  9156. and affects the OSL memory allocation interfaces AcpiOsAllocate
  9157. and AcpiOsCallocate.
  9158.  
  9159. Implemented sticky user breakpoints in the AML debugger.
  9160.  
  9161. Code and Data Size: Current core subsystem library sizes are shown
  9162. below. These are the code and data sizes for the acpica.lib
  9163. produced by the Microsoft Visual C++ 6.0 compiler, and these
  9164. values do not include any ACPI driver or OSPM code.  The debug
  9165. version of the code includes the debug output trace mechanism and
  9166. has a larger code and data size. Note that these values will vary
  9167. depending on the efficiency of the compiler and the compiler
  9168. options used during generation.
  9169.  
  9170.   Previous Release (12_05_01)
  9171.      Non-Debug Version:  64.7K Code,   5.3K Data,   70.0K Total
  9172.      Debug Version:     136.2K Code,  55.6K Data,  191.8K Total
  9173.    Current Release:
  9174.      Non-Debug Version:  66.1K Code,   5.5K Data,   71.6K Total
  9175.      Debug Version:     138.3K Code,  55.9K Data,  194.2K Total
  9176.  
  9177.  3) ASL Compiler, version X2034:
  9178.  
  9179. Now checks for (and generates an error if detected) the use of a
  9180. Break or Continue statement without an enclosing While statement.
  9181.  
  9182.  
  9183. Successfully generated the compiler with the Intel 64-bit C
  9184. compiler.
  9185.  
  9186.  ----------------------------------------
  9187. Summary of changes for this label: 12_05_01
  9188.  
  9189.  1) ACPI CA Core Subsystem:
  9190.  
  9191. The ACPI 2.0 CopyObject operator is fully implemented.  This
  9192. operator creates a new copy of an object (and is also used to
  9193. bypass the "implicit conversion" mechanism of the Store operator.)
  9194.  
  9195. The ACPI 2.0 semantics for the SizeOf operator are fully
  9196. implemented.  The change is that performing a SizeOf on a
  9197. reference object causes an automatic dereference of the object to
  9198. tha actual value before the size is evaluated. This behavior was
  9199. undefined in ACPI 1.0.
  9200.  
  9201. The ACPI 2.0 semantics for the Extended IRQ resource descriptor
  9202. have been implemented.  The interrupt polarity and mode are now
  9203. independently set.
  9204.  
  9205. Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
  9206. appearing in Package objects were not properly converted to
  9207. integers when the internal Package was converted to an external
  9208. object (via the AcpiEvaluateObject interface.)
  9209.  
  9210. Fixed a problem with the namespace object deletion mechanism for
  9211. objects created by control methods.  There were two parts to this
  9212. problem: 1) Objects created during the initialization phase method
  9213. parse were not being deleted, and 2) The object owner ID mechanism
  9214. to track objects was broken.
  9215.  
  9216. Fixed a problem where the use of the ASL Scope operator within a
  9217. control method would result in an invalid opcode exception.
  9218.  
  9219. Fixed a problem introduced in the previous label where the buffer
  9220. length required for the _PRT structure was not being returned
  9221. correctly.
  9222.  
  9223. Code and Data Size: Current core subsystem library sizes are shown
  9224. below. These are the code and data sizes for the acpica.lib
  9225. produced by the Microsoft Visual C++ 6.0 compiler, and these
  9226. values do not include any ACPI driver or OSPM code.  The debug
  9227. version of the code includes the debug output trace mechanism and
  9228. has a larger code and data size.  Note that these values will vary
  9229. depending on the efficiency of the compiler and the compiler
  9230. options used during generation.
  9231.  
  9232.   Previous Release (11_20_01)
  9233.      Non-Debug Version:  64.1K Code,   5.3K Data,   69.4K Total
  9234.      Debug Version:     135.1K Code,  55.4K Data,  190.5K Total
  9235.  
  9236.   Current Release:
  9237.      Non-Debug Version:  64.7K Code,   5.3K Data,   70.0K Total
  9238.      Debug Version:     136.2K Code,  55.6K Data,  191.8K Total
  9239.  
  9240.  2) Linux:
  9241.  
  9242. Updated all files to apply cleanly against 2.4.16.
  9243.  
  9244. Added basic PCI Interrupt Routing Table (PRT) support for IA32
  9245. (acpi_pci.c), and unified the PRT code for IA32 and IA64.  This
  9246. version supports both static and dyanmic PRT entries, but dynamic
  9247. entries are treated as if they were static (not yet
  9248. reconfigurable).  Architecture- specific code to use this data is
  9249. absent on IA32 but should be available shortly.
  9250.  
  9251. Changed the initialization sequence to start the ACPI interpreter
  9252. (acpi_init) prior to initialization of the PCI driver (pci_init)
  9253. in init/main.c.  This ordering is required to support PRT and
  9254. facilitate other (future) enhancement.  A side effect is that the
  9255. ACPI bus driver and certain device drivers can no longer be loaded
  9256. as modules.
  9257.  
  9258. Modified the 'make menuconfig' options to allow PCI Interrupt
  9259. Routing support to be included without the ACPI Bus and other
  9260. device drivers.
  9261.  
  9262.  3) ASL Compiler, version X2033:
  9263.  
  9264. Fixed some issues with the use of the new CopyObject and
  9265. DataTableRegion operators.  Both are fully functional.
  9266.  
  9267.  ----------------------------------------
  9268. Summary of changes for this label: 11_20_01
  9269.  
  9270.  20 November 2001.  Summary of changes for this release.
  9271.  
  9272.  1) ACPI CA Core Subsystem:
  9273.  
  9274. Updated Index support to match ACPI 2.0 semantics.  Storing a
  9275. Integer, String, or Buffer to an Index of a Buffer will store only
  9276. the least-significant byte of the source to the Indexed buffer
  9277. byte.  Multiple writes are not performed.
  9278.  
  9279. Fixed a problem where the access type used in an AccessAs ASL
  9280. operator was not recorded correctly into the field object.
  9281.  
  9282. Fixed a problem where ASL Event objects were created in a
  9283. signalled state. Events are now created in an unsignalled state.
  9284.  
  9285. The internal object cache is now purged after table loading and
  9286. initialization to reduce the use of dynamic kernel memory -- on
  9287. the assumption that object use is greatest during the parse phase
  9288. of the entire table (versus the run-time use of individual control
  9289. methods.)
  9290.  
  9291. ACPI 2.0 variable-length packages are now fully operational.
  9292.  
  9293. Code and Data Size: Code and Data optimizations have permitted new
  9294. feature development with an actual reduction in the library size.
  9295. Current core subsystem library sizes are shown below.  These are
  9296. the code and data sizes for the acpica.lib produced by the
  9297. Microsoft Visual C++ 6.0 compiler, and these values do not include
  9298. any ACPI driver or OSPM code.  The debug version of the code
  9299. includes the debug output trace mechanism and has a larger code
  9300. and data size.  Note that these values will vary depending on the
  9301. efficiency of the compiler and the compiler options used during
  9302. generation.
  9303.  
  9304.   Previous Release (11_09_01):
  9305.      Non-Debug Version:  63.7K Code,   5.2K Data,   68.9K Total
  9306.      Debug Version:     134.5K Code,  55.4K Data,  189.9K Total
  9307.  
  9308.   Current Release:
  9309.      Non-Debug Version:  64.1K Code,   5.3K Data,   69.4K Total
  9310.      Debug Version:     135.1K Code,  55.4K Data,  190.5K Total
  9311.  
  9312.  2) Linux:
  9313.  
  9314. Enhanced the ACPI boot-time initialization code to allow the use
  9315. of Local APIC tables for processor enumeration on IA-32, and to
  9316. pave the way for a fully MPS-free boot (on SMP systems) in the
  9317. near future.  This functionality replaces
  9318. arch/i386/kernel/acpitables.c, which was introduced in an earlier
  9319. 2.4.15-preX release.  To enable this feature you must add
  9320. "acpi_boot=on" to the kernel command line -- see the help entry
  9321. for CONFIG_ACPI_BOOT for more information.  An IA-64 release is in
  9322. the works...
  9323.  
  9324. Restructured the configuration options to allow boot-time table
  9325. parsing support without inclusion of the ACPI Interpreter (and
  9326. other) code.
  9327.  
  9328. NOTE: This release does not include fixes for the reported events,
  9329. power-down, and thermal passive cooling issues (coming soon).
  9330.  
  9331.  3) ASL Compiler:
  9332.  
  9333. Added additional typechecking for Fields within restricted access
  9334. Operation Regions.  All fields within EC and CMOS regions must be
  9335. declared with ByteAcc. All fields withing SMBus regions must be
  9336. declared with the BufferAcc access type.
  9337.  
  9338. Fixed a problem where the listing file output of control methods
  9339. no longer interleaved the actual AML code with the ASL source
  9340. code.
  9341.  
  9342.  
  9343.  
  9344.  
  9345. ----------------------------------------
  9346. Summary of changes for this label: 11_09_01
  9347.  
  9348. 1) ACPI CA Core Subsystem:
  9349.  
  9350. Implemented ACPI 2.0-defined support for writes to fields with a
  9351. Buffer, String, or Integer source operand that is smaller than the
  9352. target field. In these cases, the source operand is zero-extended
  9353. to fill the target field.
  9354.  
  9355. Fixed a problem where a Field starting bit offset (within the
  9356. parent operation region) was calculated incorrectly if the
  9357.  
  9358. alignment of the field differed from the access width.  This
  9359. affected CreateWordField, CreateDwordField, CreateQwordField, and
  9360. possibly other fields that use the "AccessAny" keyword.
  9361.  
  9362. Fixed a problem introduced in the 11_02_01 release where indirect
  9363. stores through method arguments did not operate correctly.
  9364.  
  9365. 2) Linux:
  9366.  
  9367. Implemented boot-time ACPI table parsing support
  9368. (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems.  This code
  9369. facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
  9370. legacy BIOS interfaces (e.g. MPS) for the configuration of system
  9371. processors, memory, and interrupts during setup_arch().  Note that
  9372. this patch does not include the required architecture-specific
  9373. changes required to apply this information -- subsequent patches
  9374. will be posted for both IA32 and IA64 to achieve this.
  9375.  
  9376. Added low-level sleep support for IA32 platforms, courtesy of Pat
  9377. Mochel. This allows IA32 systems to transition to/from various
  9378. sleeping states (e.g. S1, S3), although the lack of a centralized
  9379. driver model and power-manageable drivers will prevent its
  9380. (successful) use on most systems.
  9381.  
  9382. Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
  9383. submenu, unified IA32 and IA64 options, added new "Boot using ACPI
  9384. tables" option, etc.
  9385.  
  9386. Increased the default timeout for the EC driver from 1ms to 10ms
  9387. (1000 cycles of 10us) to try to address AE_TIME errors during EC
  9388. transactions.
  9389.  
  9390.  ----------------------------------------
  9391. Summary of changes for this label: 11_02_01
  9392.  
  9393. 1) ACPI CA Core Subsystem:
  9394.  
  9395. ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
  9396. (QWordAcc keyword). All ACPI 2.0 64-bit support is now
  9397. implemented.
  9398.  
  9399. OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
  9400. changes to support ACPI 2.0 Qword field access.  Read/Write
  9401. PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
  9402. accept an ACPI_INTEGER (64 bits) as the value parameter.  Also,
  9403. the value parameter for the address space handler interface is now
  9404. an ACPI_INTEGER.  OSL implementations of these interfaces must now
  9405. handle the case where the Width parameter is 64.
  9406.  
  9407. Index Fields: Fixed a problem where unaligned bit assembly and
  9408. disassembly for IndexFields was not supported correctly.
  9409.  
  9410. Index and Bank Fields:  Nested Index and Bank Fields are now
  9411. supported. During field access, a check is performed to ensure
  9412. that the value written to an Index or Bank register is not out of
  9413. the range of the register.  The Index (or Bank) register is
  9414. written before each access to the field data. Future support will
  9415. include allowing individual IndexFields to be wider than the
  9416. DataRegister width.
  9417.  
  9418. Fields: Fixed a problem where the AML interpreter was incorrectly
  9419. attempting to write beyond the end of a Field/OpRegion.  This was
  9420. a boundary case that occurred when a DWORD field was written to a
  9421. BYTE access OpRegion, forcing multiple writes and causing the
  9422. interpreter to write one datum too many.
  9423.  
  9424. Fields: Fixed a problem with Field/OpRegion access where the
  9425. starting bit address of a field was incorrectly calculated if the
  9426. current access type was wider than a byte (WordAcc, DwordAcc, or
  9427. QwordAcc).
  9428.  
  9429. Fields: Fixed a problem where forward references to individual
  9430. FieldUnits (individual Field names within a Field definition) were
  9431. not resolved during the AML table load.
  9432.  
  9433. Fields: Fixed a problem where forward references from a Field
  9434. definition to the parent Operation Region definition were not
  9435. resolved during the AML table load.
  9436.  
  9437. Fields: Duplicate FieldUnit names within a scope are now detected
  9438. during AML table load.
  9439.  
  9440. Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
  9441. returned an incorrect name for the root node.
  9442.  
  9443. Code and Data Size: Code and Data optimizations have permitted new
  9444. feature development with an actual reduction in the library size.
  9445. Current core subsystem library sizes are shown below.  These are
  9446. the code and data sizes for the acpica.lib produced by the
  9447. Microsoft Visual C++ 6.0 compiler, and these values do not include
  9448. any ACPI driver or OSPM code.  The debug version of the code
  9449. includes the debug output trace mechanism and has a larger code
  9450. and data size.  Note that these values will vary depending on the
  9451. efficiency of the compiler and the compiler options used during
  9452. generation.
  9453.  
  9454.   Previous Release (10_18_01):
  9455.      Non-Debug Version:  63.9K Code,   5.1K Data,   69.0K Total
  9456.      Debug Version:     136.7K Code,  57.4K Data,  194.2K Total
  9457.  
  9458.   Current Release:
  9459.      Non-Debug Version:  63.7K Code,   5.2K Data,   68.9K Total
  9460.      Debug Version:     134.5K Code,  55.4K Data,  189.9K Total
  9461.  
  9462.  2) Linux:
  9463.  
  9464. Improved /proc processor output (Pavel Machek) Re-added
  9465. MODULE_LICENSE("GPL") to all modules.
  9466.  
  9467.  3) ASL Compiler version X2030:
  9468.  
  9469. Duplicate FieldUnit names within a scope are now detected and
  9470. flagged as errors.
  9471.  
  9472.  4) Documentation:
  9473.  
  9474. Programmer Reference updated to reflect OSL and address space
  9475. handler interface changes described above.
  9476.  
  9477. ----------------------------------------
  9478. Summary of changes for this label: 10_18_01
  9479.  
  9480. ACPI CA Core Subsystem:
  9481.  
  9482. Fixed a problem with the internal object reference count mechanism
  9483. that occasionally caused premature object deletion. This resolves
  9484. all of the outstanding problem reports where an object is deleted
  9485. in the middle of an interpreter evaluation.  Although this problem
  9486. only showed up in rather obscure cases, the solution to the
  9487. problem involved an adjustment of all reference counts involving
  9488. objects attached to namespace nodes.
  9489.  
  9490. Fixed a problem with Field support in the interpreter where
  9491. writing to an aligned field whose length is an exact multiple (2
  9492. or greater) of the field access granularity would cause an attempt
  9493. to write beyond the end of the field.
  9494.  
  9495. The top level AML opcode execution functions within the
  9496. interpreter have been renamed with a more meaningful and
  9497. consistent naming convention.  The modules exmonad.c and
  9498. exdyadic.c were eliminated.  New modules are exoparg1.c,
  9499. exoparg2.c, exoparg3.c, and exoparg6.c.
  9500.  
  9501. Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
  9502.  
  9503. Fixed a problem where the AML debugger was causing some internal
  9504. objects to not be deleted during subsystem termination.
  9505.  
  9506. Fixed a problem with the external AcpiEvaluateObject interface
  9507. where the subsystem would fault if the named object to be
  9508. evaluated refered to a constant such as Zero, Ones, etc.
  9509.  
  9510. Fixed a problem with IndexFields and BankFields where the
  9511. subsystem would fault if the index, data, or bank registers were
  9512. not defined in the same scope as the field itself.
  9513.  
  9514. Added printf format string checking for compilers that support
  9515. this feature.  Corrected more than 50 instances of issues with
  9516. format specifiers within invocations of ACPI_DEBUG_PRINT
  9517. throughout the core subsystem code.
  9518.  
  9519. The ASL "Revision" operator now returns the ACPI support level
  9520. implemented in the core - the value "2" since the ACPI 2.0 support
  9521. is more than 50% implemented.
  9522.  
  9523. Enhanced the output of the AML debugger "dump namespace" command
  9524. to output in a more human-readable form.
  9525.  
  9526. Current core subsystem library code sizes are shown below.  These
  9527.  
  9528. are the code and data sizes for the acpica.lib produced by the
  9529. Microsoft Visual C++ 6.0 compiler, and these values do not include
  9530. any ACPI driver or OSPM code.  The debug version of the code
  9531. includes the full debug trace mechanism -- leading to a much
  9532.  
  9533. larger code and data size.  Note that these values will vary
  9534. depending on the efficiency of the compiler and the compiler
  9535. options used during generation.
  9536.  
  9537.      Previous Label (09_20_01):
  9538.      Non-Debug Version:    65K Code,     5K Data,     70K Total
  9539.      Debug Version:       138K Code,    58K Data,    196K Total
  9540.  
  9541.      This Label:
  9542.  
  9543.      Non-Debug Version:  63.9K Code,   5.1K Data,   69.0K Total
  9544.      Debug Version:     136.7K Code,  57.4K Data,  194.2K Total
  9545.  
  9546. Linux:
  9547.  
  9548. Implemented a "Bad BIOS Blacklist" to track machines that have
  9549. known ASL/AML problems.
  9550.  
  9551. Enhanced the /proc interface for the thermal zone driver and added
  9552. support for _HOT (the critical suspend trip point).  The 'info'
  9553. file now includes threshold/policy information, and allows setting
  9554. of _SCP (cooling preference) and _TZP (polling frequency) values
  9555. to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
  9556. frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
  9557. preference to the passive/quiet mode (if supported by the ASL).
  9558.  
  9559. Implemented a workaround for a gcc bug that resuted in an OOPs
  9560. when loading the control method battery driver.
  9561.  
  9562.  ----------------------------------------
  9563. Summary of changes for this label: 09_20_01
  9564.  
  9565.  ACPI CA Core Subsystem:
  9566.  
  9567. The AcpiEnableEvent and AcpiDisableEvent interfaces have been
  9568. modified to allow individual GPE levels to be flagged as wake-
  9569. enabled (i.e., these GPEs are to remain enabled when the platform
  9570. sleeps.)
  9571.  
  9572. The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
  9573. support wake-enabled GPEs.  This means that upon entering the
  9574. sleep state, all GPEs that are not wake-enabled are disabled.
  9575. When leaving the sleep state, these GPEs are reenabled.
  9576.  
  9577. A local double-precision divide/modulo module has been added to
  9578. enhance portability to OS kernels where a 64-bit math library is
  9579. not available.  The new module is "utmath.c".
  9580.  
  9581. Several optimizations have been made to reduce the use of CPU
  9582. stack.  Originally over 2K, the maximum stack usage is now below
  9583. 2K at 1860  bytes (1.82k)
  9584.  
  9585. Fixed a problem with the AcpiGetFirmwareTable interface where the
  9586. root table pointer was not mapped into a logical address properly.
  9587.  
  9588. Fixed a problem where a NULL pointer was being dereferenced in the
  9589. interpreter code for the ASL Notify operator.
  9590.  
  9591. Fixed a problem where the use of the ASL Revision operator
  9592. returned an error. This operator now returns the current version
  9593. of the ACPI CA core subsystem.
  9594.  
  9595. Fixed a problem where objects passed as control method parameters
  9596. to AcpiEvaluateObject were always deleted at method termination.
  9597. However, these objects may end up being stored into the namespace
  9598. by the called method.  The object reference count mechanism was
  9599. applied to these objects instead of a force delete.
  9600.  
  9601. Fixed a problem where static strings or buffers (contained in the
  9602. AML code) that are declared as package elements within the ASL
  9603. code could cause a fault because the interpreter would attempt to
  9604. delete them.  These objects are now marked with the "static
  9605. object" flag to prevent any attempt to delete them.
  9606.  
  9607. Implemented an interpreter optimization to use operands directly
  9608. from the state object instead of extracting the operands to local
  9609. variables.  This reduces stack use and code size, and improves
  9610. performance.
  9611.  
  9612. The module exxface.c was eliminated as it was an unnecessary extra
  9613. layer of code.
  9614.  
  9615. Current core subsystem library code sizes are shown below.  These
  9616. are the code and data sizes for the acpica.lib produced by the
  9617. Microsoft Visual C++ 6.0 compiler, and these values do not include
  9618. any ACPI driver or OSPM code.  The debug version of the code
  9619. includes the full debug trace mechanism -- leading to a much
  9620. larger code and data size.  Note that these values will vary
  9621. depending on the efficiency of the compiler and the compiler
  9622. options used during generation.
  9623.  
  9624.   Non-Debug Version:  65K Code,   5K Data,   70K Total
  9625. (Previously 69K)   Debug Version:     138K Code,  58K Data,  196K
  9626. Total  (Previously 195K)
  9627.  
  9628. Linux:
  9629.  
  9630. Support for ACPI 2.0 64-bit integers has been added.   All ACPI
  9631. Integer objects are now 64 bits wide
  9632.  
  9633. All Acpi data types and structures are now in lower case.  Only
  9634. Acpi macros are upper case for differentiation.
  9635.  
  9636.  Documentation:
  9637.  
  9638. Changes to the external interfaces as described above.
  9639.  
  9640.  ----------------------------------------
  9641. Summary of changes for this label: 08_31_01
  9642.  
  9643.  ACPI CA Core Subsystem:
  9644.  
  9645. A bug with interpreter implementation of the ASL Divide operator
  9646. was found and fixed.  The implicit function return value (not the
  9647. explicit store operands) was returning the remainder instead of
  9648. the quotient.  This was a longstanding bug and it fixes several
  9649. known outstanding issues on various platforms.
  9650.  
  9651. The ACPI_DEBUG_PRINT and function trace entry/exit macros have
  9652. been further optimized for size.  There are 700 invocations of the
  9653. DEBUG_PRINT macro alone, so each optimization reduces the size of
  9654. the debug version of the subsystem significantly.
  9655.  
  9656. A stack trace mechanism has been implemented.  The maximum stack
  9657. usage is about 2K on 32-bit platforms.  The debugger command "stat
  9658. stack" will display the current maximum stack usage.
  9659.  
  9660. All public symbols and global variables within the subsystem are
  9661. now prefixed with the string "Acpi".  This keeps all of the
  9662. symbols grouped together in a kernel map, and avoids conflicts
  9663. with other kernel subsystems.
  9664.  
  9665. Most of the internal fixed lookup tables have been moved into the
  9666. code segment via the const operator.
  9667.  
  9668. Several enhancements have been made to the interpreter to both
  9669. reduce the code size and improve performance.
  9670.  
  9671. Current core subsystem library code sizes are shown below.  These
  9672. are the code and data sizes for the acpica.lib produced by the
  9673. Microsoft Visual C++ 6.0 compiler, and these values do not include
  9674. any ACPI driver or OSPM code.  The debug version of the code
  9675. includes the full debug trace mechanism which contains over 700
  9676. invocations of the DEBUG_PRINT macro, 500 function entry macro
  9677. invocations, and over 900 function exit macro invocations --
  9678. leading to a much larger code and data size.  Note that these
  9679. values will vary depending on the efficiency of the compiler and
  9680. the compiler options used during generation.
  9681.  
  9682.         Non-Debug Version:  64K Code,   5K Data,   69K Total
  9683. Debug Version:     137K Code,  58K Data,  195K Total
  9684.  
  9685.  Linux:
  9686.  
  9687. Implemented wbinvd() macro, pending a kernel-wide definition.
  9688.  
  9689. Fixed /proc/acpi/event to handle poll() and short reads.
  9690.  
  9691.  ASL Compiler, version X2026:
  9692.  
  9693. Fixed a problem introduced in the previous label where the AML
  9694.  
  9695. code emitted for package objects produced packages with zero
  9696. length.
  9697.  
  9698.  ----------------------------------------
  9699. Summary of changes for this label: 08_16_01
  9700.  
  9701. ACPI CA Core Subsystem:
  9702.  
  9703. The following ACPI 2.0 ASL operators have been implemented in the
  9704. AML interpreter (These are already supported by the Intel ASL
  9705. compiler):  ToDecimalString, ToHexString, ToString, ToInteger, and
  9706. ToBuffer.  Support for 64-bit AML constants is implemented in the
  9707. AML parser, debugger, and disassembler.
  9708.  
  9709. The internal memory tracking mechanism (leak detection code) has
  9710. been upgraded to reduce the memory overhead (a separate tracking
  9711. block is no longer allocated for each memory allocation), and now
  9712. supports all of the internal object caches.
  9713.  
  9714. The data structures and code for the internal object caches have
  9715. been coelesced and optimized so that there is a single cache and
  9716. memory list data structure and a single group of functions that
  9717. implement generic cache management.  This has reduced the code
  9718. size in both the debug and release versions of the subsystem.
  9719.  
  9720. The DEBUG_PRINT macro(s) have been optimized for size and replaced
  9721. by ACPI_DEBUG_PRINT.  The syntax for this macro is slightly
  9722. different, because it generates a single call to an internal
  9723. function.  This results in a savings of about 90 bytes per
  9724. invocation, resulting in an overall code and data savings of about
  9725. 16% in the debug version of the subsystem.
  9726.  
  9727.  Linux:
  9728.  
  9729. Fixed C3 disk corruption problems and re-enabled C3 on supporting
  9730. machines.
  9731.  
  9732. Integrated low-level sleep code by Patrick Mochel.
  9733.  
  9734. Further tweaked source code Linuxization.
  9735.  
  9736. Other minor fixes.
  9737.  
  9738.  ASL Compiler:
  9739.  
  9740. Support for ACPI 2.0 variable length packages is fixed/completed.
  9741.  
  9742. Fixed a problem where the optional length parameter for the ACPI
  9743. 2.0 ToString operator.
  9744.  
  9745. Fixed multiple extraneous error messages when a syntax error is
  9746. detected within the declaration line of a control method.
  9747.  
  9748.  ----------------------------------------
  9749. Summary of changes for this label: 07_17_01
  9750.  
  9751. ACPI CA Core Subsystem:
  9752.  
  9753. Added a new interface named AcpiGetFirmwareTable to obtain any
  9754. ACPI table via the ACPI signature.  The interface can be called at
  9755. any time during kernel initialization, even before the kernel
  9756. virtual memory manager is initialized and paging is enabled.  This
  9757. allows kernel subsystems to obtain ACPI tables very early, even
  9758. before the ACPI CA subsystem is initialized.
  9759.  
  9760. Fixed a problem where Fields defined with the AnyAcc attribute
  9761. could be resolved to the incorrect address under the following
  9762. conditions: 1) the field width is larger than 8 bits and 2) the
  9763. parent operation region is not defined on a DWORD boundary.
  9764.  
  9765. Fixed a problem where the interpreter is not being locked during
  9766. namespace initialization (during execution of the _INI control
  9767. methods), causing an error when an attempt is made to release it
  9768. later.
  9769.  
  9770. ACPI 2.0 support in the AML Interpreter has begun and will be
  9771. ongoing throughout the rest of this year.  In this label, The Mod
  9772. operator is implemented.
  9773.  
  9774. Added a new data type to contain full PCI addresses named
  9775. ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
  9776. and Function values.
  9777.  
  9778.  Linux:
  9779.  
  9780. Enhanced the Linux version of the source code to change most
  9781. capitalized ACPI type names to lowercase. For example, all
  9782. instances of ACPI_STATUS are changed to acpi_status.  This will
  9783. result in a large diff, but the change is strictly cosmetic and
  9784. aligns the CA code closer to the Linux coding standard.
  9785.  
  9786. OSL Interfaces:
  9787.  
  9788. The interfaces to the PCI configuration space have been changed to
  9789. add the PCI Segment number and to split the single 32-bit combined
  9790. DeviceFunction field into two 16-bit fields.  This was
  9791. accomplished by moving the four values that define an address in
  9792. PCI configuration space (segment, bus, device, and function) to
  9793. the new ACPI_PCI_ID structure.
  9794.  
  9795. The changes to the PCI configuration space interfaces led to a
  9796. reexamination of the complete set of address space access
  9797. interfaces for PCI, I/O, and Memory.  The previously existing 18
  9798. interfaces have proven difficult to maintain (any small change
  9799. must be propagated across at least 6 interfaces) and do not easily
  9800. allow for future expansion to 64 bits if necessary.  Also, on some
  9801. systems, it would not be appropriate to demultiplex the access
  9802. width (8, 16, 32,or 64) before calling the OSL if the
  9803. corresponding native OS interfaces contain a similar access width
  9804. parameter.  For these reasons, the 18 address space interfaces
  9805. have been replaced by these 6 new ones:
  9806.  
  9807. AcpiOsReadPciConfiguration
  9808. AcpiOsWritePciConfiguration
  9809. AcpiOsReadMemory
  9810. AcpiOsWriteMemory
  9811. AcpiOsReadPort
  9812. AcpiOsWritePort
  9813.  
  9814. Added a new interface named AcpiOsGetRootPointer to allow the OSL
  9815. to perform the platform and/or OS-specific actions necessary to
  9816. obtain the ACPI RSDP table pointer.  On IA-32 platforms, this
  9817. interface will simply call down to the CA core to perform the low-
  9818. memory search for the table.  On IA-64, the RSDP is obtained from
  9819. EFI.  Migrating this interface to the OSL allows the CA core to
  9820.  
  9821. remain OS and platform independent.
  9822.  
  9823. Added a new interface named AcpiOsSignal to provide a generic
  9824. "function code and pointer" interface for various miscellaneous
  9825. signals and notifications that must be made to the host OS.   The
  9826. first such signals are intended to support the ASL Fatal and
  9827. Breakpoint operators.  In the latter case, the AcpiOsBreakpoint
  9828. interface has been obsoleted.
  9829.  
  9830. The definition of the AcpiFormatException interface has been
  9831. changed to simplify its use.  The caller no longer must supply a
  9832. buffer to the call; A pointer to a const string is now returned
  9833. directly.  This allows the call to be easily used in printf
  9834. statements, etc. since the caller does not have to manage a local
  9835. buffer.
  9836.  
  9837.  
  9838.  ASL Compiler, Version X2025:
  9839.  
  9840. The ACPI 2.0 Switch/Case/Default operators have been implemented
  9841. and are fully functional.  They will work with all ACPI 1.0
  9842. interpreters, since the operators are simply translated to If/Else
  9843. pairs.
  9844.  
  9845. The ACPI 2.0 ElseIf operator is implemented and will also work
  9846. with 1.0 interpreters, for the same reason.
  9847.  
  9848. Implemented support for ACPI 2.0 variable-length packages.  These
  9849. packages have a separate opcode, and their size is determined by
  9850. the interpreter at run-time.
  9851.  
  9852. Documentation The ACPI CA Programmer Reference has been updated to
  9853. reflect the new interfaces and changes to existing interfaces.
  9854.  
  9855.  ------------------------------------------
  9856. Summary of changes for this label: 06_15_01
  9857.  
  9858.  ACPI CA Core Subsystem:
  9859.  
  9860. Fixed a problem where a DWORD-accessed field within a Buffer
  9861. object would get its byte address inadvertently rounded down to
  9862. the nearest DWORD.  Buffers are always Byte-accessible.
  9863.  
  9864.  ASL Compiler, version X2024:
  9865.  
  9866. Fixed a problem where the Switch() operator would either fault or
  9867. hang the compiler.  Note however, that the AML code for this ACPI
  9868. 2.0 operator is not yet implemented.
  9869.  
  9870. Compiler uses the new AcpiOsGetTimer interface to obtain compile
  9871. timings.
  9872.  
  9873. Implementation of the CreateField operator automatically converts
  9874. a reference to a named field within a resource descriptor from a
  9875. byte offset to a bit offset if required.
  9876.  
  9877. Added some missing named fields from the resource descriptor
  9878. support. These are the names that are automatically created by the
  9879. compiler to reference fields within a descriptor.  They are only
  9880. valid at compile time and are not passed through to the AML
  9881. interpreter.
  9882.  
  9883. Resource descriptor named fields are now typed as Integers and
  9884. subject to compile-time typechecking when used in expressions.
  9885.  
  9886.  ------------------------------------------
  9887. Summary of changes for this label: 05_18_01
  9888.  
  9889.  ACPI CA Core Subsystem:
  9890.  
  9891. Fixed a couple of problems in the Field support code where bits
  9892. from adjacent fields could be returned along with the proper field
  9893. bits. Restructured the field support code to improve performance,
  9894. readability and maintainability.
  9895.  
  9896. New DEBUG_PRINTP macro automatically inserts the procedure name
  9897. into the output, saving hundreds of copies of procedure name
  9898. strings within the source, shrinking the memory footprint of the
  9899. debug version of the core subsystem.
  9900.  
  9901.  Source Code Structure:
  9902.  
  9903. The source code directory tree was restructured to reflect the
  9904. current organization of the component architecture.  Some files
  9905. and directories have been moved and/or renamed.
  9906.  
  9907.  Linux:
  9908.  
  9909. Fixed leaking kacpidpc processes.
  9910.  
  9911. Fixed queueing event data even when /proc/acpi/event is not
  9912. opened.
  9913.  
  9914.  ASL Compiler, version X2020:
  9915.  
  9916. Memory allocation performance enhancement - over 24X compile time
  9917. improvement on large ASL files.  Parse nodes and namestring
  9918. buffers are now allocated from a large internal compiler buffer.
  9919.  
  9920. The temporary .SRC file is deleted unless the "-s" option is
  9921. specified
  9922.  
  9923. The "-d" debug output option now sends all output to the .DBG file
  9924. instead of the console.
  9925.  
  9926. "External" second parameter is now optional
  9927.  
  9928. "ElseIf" syntax now properly allows the predicate
  9929.  
  9930. Last operand to "Load" now recognized as a Target operand
  9931.  
  9932. Debug object can now be used anywhere as a normal object.
  9933.  
  9934. ResourceTemplate now returns an object of type BUFFER
  9935.  
  9936. EISAID now returns an object of type INTEGER
  9937.  
  9938. "Index" now works with a STRING operand
  9939.  
  9940. "LoadTable" now accepts optional parameters
  9941.  
  9942. "ToString" length parameter is now optional
  9943.  
  9944. "Interrupt (ResourceType," parse error fixed.
  9945.  
  9946. "Register" with a user-defined region space parse error fixed
  9947.  
  9948. Escaped backslash at the end of a string ("\\") scan/parse error
  9949. fixed
  9950.  
  9951. "Revision" is now an object of type INTEGER.
  9952.  
  9953.  
  9954.  
  9955. ------------------------------------------
  9956. Summary of changes for this label: 05_02_01
  9957.  
  9958. Linux:
  9959.  
  9960. /proc/acpi/event now blocks properly.
  9961.  
  9962. Removed /proc/sys/acpi. You can still dump your DSDT from
  9963. /proc/acpi/dsdt.
  9964.  
  9965.  ACPI CA Core Subsystem:
  9966.  
  9967. Fixed a problem introduced in the previous label where some of the
  9968. "small" resource descriptor types were not recognized.
  9969.  
  9970. Improved error messages for the case where an ASL Field is outside
  9971. the range of the parent operation region.
  9972.  
  9973.  ASL Compiler, version X2018:
  9974.  
  9975.  
  9976. Added error detection for ASL Fields that extend beyond the length
  9977. of the parent operation region (only if the length of the region
  9978. is known at compile time.)  This includes fields that have a
  9979. minimum access width that is smaller than the parent region, and
  9980. individual field units that are partially or entirely beyond the
  9981. extent of the parent.
  9982.  
  9983.  
  9984.  
  9985. ------------------------------------------
  9986. Summary of changes for this label: 04_27_01
  9987.  
  9988.  ACPI CA Core Subsystem:
  9989.  
  9990. Fixed a problem where the namespace mutex could be released at the
  9991. wrong time during execution of AcpiRemoveAddressSpaceHandler.
  9992.  
  9993. Added optional thread ID output for debug traces, to simplify
  9994. debugging of multiple threads.  Added context switch notification
  9995. when the debug code realizes that a different thread is now
  9996. executing ACPI code.
  9997.  
  9998. Some additional external data types have been prefixed with the
  9999. string "ACPI_" for consistency.  This may effect existing code.
  10000. The data types affected are the external callback typedefs - e.g.,
  10001.  
  10002. WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
  10003.  
  10004.  Linux:
  10005.  
  10006. Fixed an issue with the OSL semaphore implementation where a
  10007. thread was waking up with an error from receiving a SIGCHLD
  10008. signal.
  10009.  
  10010. Linux version of ACPI CA now uses the system C library for string
  10011. manipulation routines instead of a local implementation.
  10012.  
  10013. Cleaned up comments and removed TBDs.
  10014.  
  10015.  ASL Compiler, version X2017:
  10016.  
  10017. Enhanced error detection and reporting for all file I/O
  10018. operations.
  10019.  
  10020.  Documentation:
  10021.  
  10022. Programmer Reference updated to version 1.06.
  10023.  
  10024.  
  10025.  
  10026. ------------------------------------------
  10027. Summary of changes for this label: 04_13_01
  10028.  
  10029.  ACPI CA Core Subsystem:
  10030.  
  10031. Restructured support for BufferFields and RegionFields.
  10032. BankFields support is now fully operational.  All known 32-bit
  10033. limitations on field sizes have been removed.  Both BufferFields
  10034. and (Operation) RegionFields are now supported by the same field
  10035. management code.
  10036.  
  10037. Resource support now supports QWORD address and IO resources. The
  10038. 16/32/64 bit address structures and the Extended IRQ structure
  10039. have been changed to properly handle Source Resource strings.
  10040.  
  10041. A ThreadId of -1 is now used to indicate a "mutex not acquired"
  10042. condition internally and must never be returned by AcpiOsThreadId.
  10043. This reserved value was changed from 0 since Unix systems allow a
  10044. thread ID of 0.
  10045.  
  10046. Linux:
  10047.  
  10048. Driver code reorganized to enhance portability
  10049.  
  10050. Added a kernel configuration option to control ACPI_DEBUG
  10051.  
  10052. Fixed the EC driver to honor _GLK.
  10053.  
  10054. ASL Compiler, version X2016:
  10055.  
  10056. Fixed support for the "FixedHw" keyword.  Previously, the FixedHw
  10057. address space was set to 0, not 0x7f as it should be.
  10058.  
  10059.  ------------------------------------------
  10060. Summary of changes for this label: 03_13_01
  10061.  
  10062.  ACPI CA Core Subsystem:
  10063.  
  10064. During ACPI initialization, the _SB_._INI method is now run if
  10065. present.
  10066.  
  10067. Notify handler fix - notifies are deferred until the parent method
  10068. completes execution.  This fixes the "mutex already acquired"
  10069. issue seen occasionally.
  10070.  
  10071. Part of the "implicit conversion" rules in ACPI 2.0 have been
  10072. found to cause compatibility problems with existing ASL/AML.  The
  10073. convert "result-to-target-type" implementation has been removed
  10074. for stores to method Args and Locals.  Source operand conversion
  10075. is still fully implemented.  Possible changes to ACPI 2.0
  10076. specification pending.
  10077.  
  10078. Fix to AcpiRsCalculatePciRoutingTableLength to return correct
  10079. length.
  10080.  
  10081. Fix for compiler warnings for 64-bit compiles.
  10082.  
  10083.  Linux:
  10084.  
  10085. /proc output aligned for easier parsing.
  10086.  
  10087. Release-version compile problem fixed.
  10088.  
  10089. New kernel configuration options documented in Configure.help.
  10090.  
  10091. IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
  10092. context" message.
  10093.  
  10094.  OSPM:
  10095.  
  10096. Power resource driver integrated with bus manager.
  10097.  
  10098. Fixed kernel fault during active cooling for thermal zones.
  10099.  
  10100. Source Code:
  10101.  
  10102. The source code tree has been restructured.
  10103.  
  10104.  
  10105.  
  10106. ------------------------------------------
  10107. Summary of changes for this label: 03_02_01
  10108.  
  10109.  Linux OS Services Layer (OSL):
  10110.  
  10111. Major revision of all Linux-specific code.
  10112.  
  10113. Modularized all ACPI-specific drivers.
  10114.  
  10115. Added new thermal zone and power resource drivers.
  10116.  
  10117. Revamped /proc interface (new functionality is under /proc/acpi).
  10118.  
  10119. New kernel configuration options.
  10120.  
  10121.  Linux known issues:
  10122.  
  10123. New kernel configuration options not documented in Configure.help
  10124. yet.
  10125.  
  10126.  
  10127. Module dependencies not currently implemented. If used, they
  10128. should be loaded in this order: busmgr, power, ec, system,
  10129. processor, battery, ac_adapter, button, thermal.
  10130.  
  10131. Modules will not load if CONFIG_MODVERSION is set.
  10132.  
  10133. IBM 600E - entering S5 may reboot instead of shutting down.
  10134.  
  10135. IBM 600E - Sleep button may generate "Invalid <NULL> context"
  10136. message.
  10137.  
  10138. Some systems may fail with "execution mutex already acquired"
  10139. message.
  10140.  
  10141.  ACPI CA Core Subsystem:
  10142.  
  10143. Added a new OSL Interface, AcpiOsGetThreadId.  This was required
  10144. for the  deadlock detection code. Defined to return a non-zero, 32-
  10145. bit thread ID for the currently executing thread.  May be a non-
  10146. zero constant integer on single-thread systems.
  10147.  
  10148. Implemented deadlock detection for internal subsystem mutexes.  We
  10149. may add conditional compilation for this code (debug only) later.
  10150.  
  10151. ASL/AML Mutex object semantics are now fully supported.  This
  10152. includes multiple acquires/releases by owner and support for the
  10153.  
  10154. Mutex SyncLevel parameter.
  10155.  
  10156. A new "Force Release" mechanism automatically frees all ASL
  10157. Mutexes that have been acquired but not released when a thread
  10158. exits the interpreter.  This forces conformance to the ACPI spec
  10159. ("All mutexes must be released when an invocation exits") and
  10160. prevents deadlocked ASL threads.  This mechanism can be expanded
  10161. (later) to monitor other resource acquisitions if OEM ASL code
  10162. continues to misbehave (which it will).
  10163.  
  10164. Several new ACPI exception codes have been added for the Mutex
  10165. support.
  10166.  
  10167. Recursive method calls are now allowed and supported (the ACPI
  10168. spec does in fact allow recursive method calls.)  The number of
  10169. recursive calls is subject to the restrictions imposed by the
  10170. SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
  10171. parameter.
  10172.  
  10173. Implemented support for the SyncLevel parameter for control
  10174. methods (ACPI 2.0 feature)
  10175.  
  10176. Fixed a deadlock problem when multiple threads attempted to use
  10177. the interpreter.
  10178.  
  10179. Fixed a problem where the string length of a String package
  10180. element was not always set in a package returned from
  10181. AcpiEvaluateObject.
  10182.  
  10183. Fixed a problem where the length of a String package element was
  10184. not always included in the length of the overall package returned
  10185. from AcpiEvaluateObject.
  10186.  
  10187. Added external interfaces (Acpi*) to the ACPI debug memory
  10188. manager.  This manager keeps a list of all outstanding
  10189. allocations, and can therefore detect memory leaks and attempts to
  10190. free memory blocks more than once. Useful for code such as the
  10191. power manager, etc.  May not be appropriate for device drivers.
  10192. Performance with the debug code enabled is slow.
  10193.  
  10194. The ACPI Global Lock is now an optional hardware element.
  10195.  
  10196.  ASL Compiler Version X2015:
  10197.  
  10198. Integrated changes to allow the compiler to be generated on
  10199. multiple platforms.
  10200.  
  10201. Linux makefile added to generate the compiler on Linux
  10202.  
  10203.  Source Code:
  10204.  
  10205. All platform-specific headers have been moved to their own
  10206. subdirectory, Include/Platform.
  10207.  
  10208. New source file added, Interpreter/ammutex.c
  10209.  
  10210. New header file, Include/acstruct.h
  10211.  
  10212.  Documentation:
  10213.  
  10214. The programmer reference has been updated for the following new
  10215. interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
  10216.  
  10217.  ------------------------------------------
  10218. Summary of changes for this label: 02_08_01
  10219.  
  10220. Core ACPI CA Subsystem: Fixed a problem where an error was
  10221. incorrectly returned if the return resource buffer was larger than
  10222. the actual data (in the resource interfaces).
  10223.  
  10224. References to named objects within packages are resolved to the
  10225.  
  10226. full pathname string before packages are returned directly (via
  10227. the AcpiEvaluateObject interface) or indirectly via the resource
  10228. interfaces.
  10229.  
  10230. Linux OS Services Layer (OSL):
  10231.  
  10232. Improved /proc battery interface.
  10233.  
  10234.  
  10235. Added C-state debugging output and other miscellaneous fixes.
  10236.  
  10237. ASL Compiler Version X2014:
  10238.  
  10239. All defined method arguments can now be used as local variables,
  10240. including the ones that are not actually passed in as parameters.
  10241. The compiler tracks initialization of the arguments and issues an
  10242. exception if they are used without prior assignment (just like
  10243. locals).
  10244.  
  10245. The -o option now specifies a filename prefix that is used for all
  10246. output files, including the AML output file.  Otherwise, the
  10247. default behavior is as follows:  1) the AML goes to the file
  10248. specified in the DSDT.  2) all other output files use the input
  10249. source filename as the base.
  10250.  
  10251.  ------------------------------------------
  10252. Summary of changes for this label: 01_25_01
  10253.  
  10254. Core ACPI CA Subsystem: Restructured the implementation of object
  10255. store support within the  interpreter.  This includes support for
  10256. the Store operator as well  as any ASL operators that include a
  10257. target operand.
  10258.  
  10259. Partially implemented support for Implicit Result-to-Target
  10260. conversion. This is when a result object is converted on the fly
  10261. to the type of  an existing target object.  Completion of this
  10262. support is pending  further analysis of the ACPI specification
  10263. concerning this matter.
  10264.  
  10265. CPU-specific code has been removed from the subsystem (hardware
  10266. directory).
  10267.  
  10268. New Power Management Timer functions added
  10269.  
  10270. Linux OS Services Layer (OSL): Moved system state transition code
  10271. to the core, fixed it, and modified  Linux OSL accordingly.
  10272.  
  10273. Fixed C2 and C3 latency calculations.
  10274.  
  10275.  
  10276. We no longer use the compilation date for the version message on
  10277. initialization, but retrieve the version from AcpiGetSystemInfo().
  10278.  
  10279. Incorporated for fix Sony VAIO machines.
  10280.  
  10281. Documentation:  The Programmer Reference has been updated and
  10282. reformatted.
  10283.  
  10284.  
  10285. ASL Compiler:  Version X2013: Fixed a problem where the line
  10286. numbering and error reporting could get out  of sync in the
  10287. presence of multiple include files.
  10288.  
  10289.  ------------------------------------------
  10290. Summary of changes for this label: 01_15_01
  10291.  
  10292. Core ACPI CA Subsystem:
  10293.  
  10294. Implemented support for type conversions in the execution of the
  10295. ASL  Concatenate operator (The second operand is converted to
  10296. match the type  of the first operand before concatenation.)
  10297.  
  10298. Support for implicit source operand conversion is partially
  10299. implemented.   The ASL source operand types Integer, Buffer, and
  10300. String are freely  interchangeable for most ASL operators and are
  10301. converted by the interpreter  on the fly as required.  Implicit
  10302. Target operand conversion (where the  result is converted to the
  10303. target type before storing) is not yet implemented.
  10304.  
  10305. Support for 32-bit and 64-bit BCD integers is implemented.
  10306.  
  10307. Problem fixed where a field read on an aligned field could cause a
  10308. read  past the end of the field.
  10309.  
  10310. New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
  10311. does not return a value, but the caller expects one.  (The ASL
  10312. compiler flags this as a warning.)
  10313.  
  10314. ASL Compiler:
  10315.  
  10316. Version X2011:
  10317. 1. Static typechecking of all operands is implemented. This
  10318. prevents the use of invalid objects (such as using a Package where
  10319. an Integer is required) at compile time instead of at interpreter
  10320. run-time.
  10321. 2. The ASL source line is printed with ALL errors and warnings.
  10322. 3. Bug fix for source EOF without final linefeed.
  10323. 4. Debug option is split into a parse trace and a namespace trace.
  10324. 5. Namespace output option (-n) includes initial values for
  10325. integers and strings.
  10326. 6. Parse-only option added for quick syntax checking.
  10327. 7. Compiler checks for duplicate ACPI name declarations
  10328.  
  10329. Version X2012:
  10330. 1. Relaxed typechecking to allow interchangeability between
  10331. strings, integers, and buffers.  These types are now converted by
  10332. the interpreter at runtime.
  10333. 2. Compiler reports time taken by each internal subsystem in the
  10334. debug         output file.
  10335.  
  10336.  
  10337.  ------------------------------------------
  10338. Summary of changes for this label: 12_14_00
  10339.  
  10340. ASL Compiler:
  10341.  
  10342. This is the first official release of the compiler. Since the
  10343. compiler requires elements of the Core Subsystem, this label
  10344. synchronizes everything.
  10345.  
  10346. ------------------------------------------
  10347. Summary of changes for this label: 12_08_00
  10348.  
  10349.  
  10350. Fixed a problem where named references within the ASL definition
  10351. of both OperationRegions and CreateXXXFields did not work
  10352. properly.  The symptom was an AE_AML_OPERAND_TYPE during
  10353. initialization of the region/field. This is similar (but not
  10354. related internally) to the problem that was fixed in the last
  10355. label.
  10356.  
  10357. Implemented both 32-bit and 64-bit support for the BCD ASL
  10358. functions ToBCD and FromBCD.
  10359.  
  10360. Updated all legal headers to include "2000" in the copyright
  10361. years.
  10362.  
  10363.  ------------------------------------------
  10364. Summary of changes for this label: 12_01_00
  10365.  
  10366. Fixed a problem where method invocations within the ASL definition
  10367. of both OperationRegions and CreateXXXFields did not work
  10368. properly.  The symptom was an AE_AML_OPERAND_TYPE during
  10369. initialization of the region/field:
  10370.  
  10371.   nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
  10372. [DEBG]   ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
  10373. (0x3005)
  10374.  
  10375. Fixed a problem where operators with more than one nested
  10376. subexpression would fail.  The symptoms were varied, by mostly
  10377. AE_AML_OPERAND_TYPE errors.  This was actually a rather serious
  10378. problem that has gone unnoticed until now.
  10379.  
  10380.   Subtract (Add (1,2), Multiply (3,4))
  10381.  
  10382. Fixed a problem where AcpiGetHandle didn't quite get fixed in the
  10383. previous build (The prefix part of a relative path was handled
  10384. incorrectly).
  10385.  
  10386. Fixed a problem where Operation Region initialization failed if
  10387. the operation region name was a "namepath" instead of a simple
  10388. "nameseg". Symptom was an AE_NO_OPERAND error.
  10389.  
  10390. Fixed a problem where an assignment to a local variable via the
  10391. indirect RefOf mechanism only worked for the first such
  10392. assignment.  Subsequent assignments were ignored.
  10393.  
  10394.  ------------------------------------------
  10395. Summary of changes for this label: 11_15_00
  10396.  
  10397. ACPI 2.0 table support with backwards support for ACPI 1.0 and the
  10398. 0.71 extensions.  Note: although we can read ACPI 2.0 BIOS tables,
  10399. the AML  interpreter does NOT have support for the new 2.0 ASL
  10400. grammar terms at this time.
  10401.  
  10402. All ACPI hardware access is via the GAS structures in the ACPI 2.0
  10403. FADT.
  10404.  
  10405. All physical memory addresses across all platforms are now 64 bits
  10406. wide. Logical address width remains dependent on the platform
  10407. (i.e., "void *").
  10408.  
  10409. AcpiOsMapMemory interface changed to a 64-bit physical address.
  10410.  
  10411. The AML interpreter integer size is now 64 bits, as per the ACPI
  10412. 2.0 specification.
  10413.  
  10414. For backwards compatibility with ACPI 1.0, ACPI tables with a
  10415. revision number less than 2 use 32-bit integers only.
  10416.  
  10417. Fixed a problem where the evaluation of OpRegion operands did not
  10418. always resolve them to numbers properly.
  10419.  
  10420. ------------------------------------------
  10421. Summary of changes for this label: 10_20_00
  10422.  
  10423. Fix for CBN_._STA issue.  This fix will allow correct access to
  10424. CBN_ OpRegions when the _STA returns 0x8.
  10425.  
  10426. Support to convert ACPI constants (Ones, Zeros, One) to actual
  10427. values before a package object is returned
  10428.  
  10429. Fix for method call as predicate to if/while construct causing
  10430. incorrect if/while behavior
  10431.  
  10432. Fix for Else block package lengths sometimes calculated wrong (if
  10433. block > 63 bytes)
  10434.  
  10435. Fix for Processor object length field, was always zero
  10436.  
  10437. Table load abort if FACP sanity check fails
  10438.  
  10439. Fix for problem with Scope(name) if name already exists
  10440.  
  10441. Warning emitted if a named object referenced cannot be found
  10442. (resolved) during method execution.
  10443.  
  10444.  
  10445.  
  10446.  
  10447.  
  10448. ------------------------------------------
  10449. Summary of changes for this label: 9_29_00
  10450.  
  10451. New table initialization interfaces: AcpiInitializeSubsystem no
  10452. longer has any parameters AcpiFindRootPointer - Find the RSDP (if
  10453. necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
  10454. >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
  10455. AcpiLoadTables
  10456.  
  10457. Note: These interface changes require changes to all existing OSDs
  10458.  
  10459. The PCI_Config default address space handler is always installed
  10460. at the root namespace object.
  10461.  
  10462. -------------------------------------------
  10463. Summary of changes for this label: 09_15_00
  10464.  
  10465. The new initialization architecture is implemented.  New
  10466. interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
  10467. AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
  10468.  
  10469. (Namespace is automatically loaded when a table is loaded)
  10470.  
  10471. The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
  10472. 52 bytes to 32 bytes.  There is usually one of these for every
  10473. namespace object, so the memory savings is significant.
  10474.  
  10475. Implemented just-in-time evaluation of the CreateField operators.
  10476.  
  10477. Bug fixes for IA-64 support have been integrated.
  10478.  
  10479. Additional code review comments have been implemented
  10480.  
  10481. The so-called "third pass parse" has been replaced by a final walk
  10482. through the namespace to initialize all operation regions (address
  10483. spaces) and fields that have not yet been initialized during the
  10484. execution of the various _INI and REG methods.
  10485.  
  10486. New file - namespace/nsinit.c
  10487.  
  10488. -------------------------------------------
  10489. Summary of changes for this label: 09_01_00
  10490.  
  10491. Namespace manager data structures have been reworked to change the
  10492. primary  object from a table to a single object.  This has
  10493. resulted in dynamic memory  savings of 3X within the namespace and
  10494. 2X overall in the ACPI CA subsystem.
  10495.  
  10496. Fixed problem where the call to AcpiEvFindPciRootBuses was
  10497. inadvertently left  commented out.
  10498.  
  10499. Reduced the warning count when generating the source with the GCC
  10500. compiler.
  10501.  
  10502. Revision numbers added to each module header showing the
  10503. SourceSafe version of the file.  Please refer to this version
  10504. number when giving us feedback or comments on individual modules.
  10505.  
  10506. The main object types within the subsystem have been renamed to
  10507. clarify their  purpose:
  10508.  
  10509. ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
  10510. ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
  10511. ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
  10512.  
  10513. NOTE: no changes to the initialization sequence are included in
  10514. this label.
  10515.  
  10516. -------------------------------------------
  10517. Summary of changes for this label: 08_23_00
  10518.  
  10519. Fixed problem where TerminateControlMethod was being called
  10520. multiple times per  method
  10521.  
  10522. Fixed debugger problem where single stepping caused a semaphore to
  10523. be  oversignalled
  10524.  
  10525. Improved performance through additional parse object caching -
  10526. added  ACPI_EXTENDED_OP type
  10527.  
  10528. -------------------------------------------
  10529. Summary of changes for this label: 08_10_00
  10530.  
  10531. Parser/Interpreter integration:  Eliminated the creation of
  10532. complete parse trees  for ACPI tables and control methods.
  10533. Instead, parse subtrees are created and  then deleted as soon as
  10534. they are processed (Either entered into the namespace or  executed
  10535. by the interpreter).  This reduces the use of dynamic kernel
  10536. memory  significantly. (about 10X)
  10537.  
  10538. Exception codes broken into classes and renumbered.  Be sure to
  10539. recompile all  code that includes acexcep.h.  Hopefully we won't
  10540. have to renumber the codes  again now that they are split into
  10541. classes (environment, programmer, AML code,  ACPI table, and
  10542. internal).
  10543.  
  10544. Fixed some additional alignment issues in the Resource Manager
  10545. subcomponent
  10546.  
  10547. Implemented semaphore tracking in the AcpiExec utility, and fixed
  10548. several places  where mutexes/semaphores were being unlocked
  10549. without a corresponding lock  operation.  There are no known
  10550. semaphore or mutex "leaks" at this time.
  10551.  
  10552. Fixed the case where an ASL Return operator is used to return an
  10553. unnamed  package.
  10554.  
  10555. -------------------------------------------
  10556. Summary of changes for this label: 07_28_00
  10557.  
  10558. Fixed a problem with the way addresses were calculated in
  10559. AcpiAmlReadFieldData()  and AcpiAmlWriteFieldData(). This problem
  10560. manifested itself when a Field was  created with WordAccess or
  10561. DwordAccess, but the field unit defined within the  Field was less
  10562.  
  10563. than a Word or Dword.
  10564.  
  10565. Fixed a problem in AmlDumpOperands() module's loop to pull
  10566. operands off of the  operand stack to display information. The
  10567. problem manifested itself as a TLB  error on 64-bit systems when
  10568. accessing an operand stack with two or more  operands.
  10569.  
  10570. Fixed a problem with the PCI configuration space handlers where
  10571. context was  getting confused between accesses. This required a
  10572. change to the generic address  space handler and address space
  10573. setup definitions. Handlers now get both a  global handler context
  10574. (this is the one passed in by the user when executing
  10575. AcpiInstallAddressSpaceHandler() and a specific region context
  10576. that is unique to  each region (For example, the _ADR, _SEG and
  10577. _BBN values associated with a  specific region). The generic
  10578. function definitions have changed to the  following:
  10579.  
  10580. typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
  10581. UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
  10582. *HandlerContext, // This used to be void *Context void
  10583. *RegionContext); // This is an additional parameter
  10584.  
  10585. typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
  10586. RegionHandle, UINT32 Function, void *HandlerContext,  void
  10587. **RegionContext); // This used to be **ReturnContext
  10588.  
  10589. -------------------------------------------
  10590. Summary of changes for this label: 07_21_00
  10591.  
  10592. Major file consolidation and rename.  All files within the
  10593. interpreter have been  renamed as well as most header files.  This
  10594. was done to prevent collisions with  existing files in the host
  10595. OSs -- filenames such as "config.h" and "global.h"  seem to be
  10596. quite common.  The VC project files have been updated.  All
  10597. makefiles  will require modification.
  10598.  
  10599. The parser/interpreter integration continues in Phase 5 with the
  10600. implementation  of a complete 2-pass parse (the AML is parsed
  10601. twice) for each table;  This  avoids the construction of a huge
  10602. parse tree and therefore reduces the amount of  dynamic memory
  10603. required by the subsystem.  Greater use of the parse object cache
  10604. means that performance is unaffected.
  10605.  
  10606. Many comments from the two code reviews have been rolled in.
  10607.  
  10608. The 64-bit alignment support is complete.
  10609.  
  10610. -------------------------------------------
  10611. Summary of changes for this label: 06_30_00
  10612.  
  10613. With a nod and a tip of the hat to the technology of yesteryear,
  10614. we've added  support in the source code for 80 column output
  10615. devices.  The code is now mostly  constrained to 80 columns or
  10616. less to support environments and editors that 1)  cannot display
  10617. or print more than 80 characters on a single line, and 2) cannot
  10618. disable line wrapping.
  10619.  
  10620. A major restructuring of the namespace data structure has been
  10621. completed.  The  result is 1) cleaner and more
  10622. understandable/maintainable code, and 2) a  significant reduction
  10623. in the dynamic memory requirement for each named ACPI  object
  10624. (almost half).
  10625.  
  10626. -------------------------------------------
  10627. Summary of changes for this label: 06_23_00
  10628.  
  10629. Linux support has been added.  In order to obtain approval to get
  10630. the ACPI CA  subsystem into the Linux kernel, we've had to make
  10631. quite a few changes to the  base subsystem that will affect all
  10632. users (all the changes are generic and OS- independent).  The
  10633. effects of these global changes have been somewhat far  reaching.
  10634. Files have been merged and/or renamed and interfaces have been
  10635. renamed.   The major changes are described below.
  10636.  
  10637. Osd* interfaces renamed to AcpiOs* to eliminate namespace
  10638. pollution/confusion  within our target kernels.  All OSD
  10639. interfaces must be modified to match the new  naming convention.
  10640.  
  10641. Files merged across the subsystem.  A number of the smaller source
  10642. and header  files have been merged to reduce the file count and
  10643. increase the density of the  existing files.  There are too many
  10644. to list here.  In general, makefiles that  call out individual
  10645. files will require rebuilding.
  10646.  
  10647. Interpreter files renamed.  All interpreter files now have the
  10648. prefix am*  instead of ie* and is*.
  10649.  
  10650. Header files renamed:  The acapi.h file is now acpixf.h.  The
  10651. acpiosd.h file is  now acpiosxf.h.  We are removing references to
  10652. the acronym "API" since it is  somewhat windowsy. The new name is
  10653. "external interface" or xface or xf in the  filenames.j
  10654.  
  10655.  
  10656. All manifest constants have been forced to upper case (some were
  10657. mixed case.)   Also, the string "ACPI_" has been prepended to many
  10658. (not all) of the constants,  typedefs, and structs.
  10659.  
  10660. The globals "DebugLevel" and "DebugLayer" have been renamed
  10661. "AcpiDbgLevel" and  "AcpiDbgLayer" respectively.
  10662.  
  10663. All other globals within the subsystem are now prefixed with
  10664. "AcpiGbl_" Internal procedures within the subsystem are now
  10665. prefixed with "Acpi" (with only  a few exceptions).  The original
  10666. two-letter abbreviation for the subcomponent  remains after "Acpi"
  10667. - for example, CmCallocate became AcpiCmCallocate.
  10668.  
  10669. Added a source code translation/conversion utility.  Used to
  10670. generate the Linux  source code, it can be modified to generate
  10671. other types of source as well. Can  also be used to cleanup
  10672. existing source by removing extraneous spaces and blank  lines.
  10673. Found in tools/acpisrc/*
  10674.  
  10675. OsdUnMapMemory was renamed to OsdUnmapMemory and then
  10676. AcpiOsUnmapMemory.  (UnMap  became Unmap).
  10677.  
  10678. A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
  10679. When set to  one, this indicates that the caller wants to use the
  10680.  
  10681. semaphore as a mutex, not a  counting semaphore.  ACPI CA uses
  10682. both types.  However, implementers of this  call may want to use
  10683. different OS primitives depending on the type of semaphore
  10684. requested.  For example, some operating systems provide separate
  10685.  
  10686. "mutex" and  "semaphore" interfaces - where the mutex interface is
  10687. much faster because it  doesn't have all the overhead of a full
  10688. semaphore implementation.
  10689.  
  10690. Fixed a deadlock problem where a method that accesses the PCI
  10691. address space can  block forever if it is the first access to the
  10692. space.
  10693.  
  10694. -------------------------------------------
  10695. Summary of changes for this label: 06_02_00
  10696.  
  10697. Support for environments that cannot handle unaligned data
  10698. accesses (e.g.  firmware and OS environments devoid of alignment
  10699. handler technology namely  SAL/EFI and the IA-64 Linux kernel) has
  10700. been added (via configurable macros) in  these three areas: -
  10701. Transfer of data from the raw AML byte stream is done via byte
  10702. moves instead of    word/dword/qword moves. - External objects are
  10703. aligned within the user buffer, including package   elements (sub-
  10704. objects). - Conversion of name strings to UINT32 Acpi Names is now
  10705. done byte-wise.
  10706.  
  10707. The Store operator was modified to mimic Microsoft's
  10708. implementation when storing  to a Buffer Field.
  10709.  
  10710. Added a check of the BM_STS bit before entering C3.
  10711.  
  10712. The methods subdirectory has been obsoleted and removed.  A new
  10713. file, cmeval.c  subsumes the functionality.
  10714.  
  10715. A 16-bit (DOS) version of AcpiExec has been developed.  The
  10716. makefile is under  the acpiexec directory.
  10717.