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23 June 2011. Summary of changes for version 20110623:

1) ACPI CA Core Subsystem:

Updated the predefined name repair mechanism to not attempt repair of a _TSS 

return object if a _PSS object is present. We can only sort the _TSS return 

package if there is no _PSS within the same scope. This is because if _PSS is 

present, the ACPI specification dictates that the _TSS Power Dissipation field 

is to be ignored, and therefore some BIOSs leave garbage values in the _TSS 

Power field(s). In this case, it is best to just return the _TSS package as-

is. Reported by, and fixed with assistance from Fenghua Yu.

Added an option to globally disable the control method return value validation 

and repair. This runtime option can be used to disable return value repair if 

this is causing a problem on a particular machine. Also added an option to 

AcpiExec (-dr) to set this disable flag.

All makefiles and project files: Major changes to improve generation of ACPICA 

tools. ACPICA BZ 912:

    Reduce default optimization levels to improve compatibility

    For Linux, add strict-aliasing=0 for gcc 4

    Cleanup and simplify use of command line defines

    Cleanup multithread library support

    Improve usage messages

Linux-specific header: update handling of THREAD_ID and pthread. For the 32-

bit case, improve casting to eliminate possible warnings, especially with the 

acpica tools.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 

version of the code includes the debug output trace mechanism and has a much 

larger code and data size.

  Previous Release (VC 9.0):

    Non-Debug Version:  90.1K Code, 23.9K Data, 114.0K Total

    Debug Version:     165.6K Code, 68.4K Data, 234.0K Total

  Current Release (VC 9.0):

    Non-Debug Version:  90.2K Code, 23.9K Data, 114.1K Total

    Debug Version:     165.6K Code, 68.4K Data, 234.0K Total

2) iASL Compiler/Disassembler and Tools:

With this release, a new utility named "acpihelp" has been added to the ACPICA 

package. This utility summarizes the ACPI specification chapters for the ASL 

and AML languages. It generates under Linux/Unix as well as Windows, and 

provides the following functionality:

    Find/display ASL operator(s) -- with description and syntax.

    Find/display ASL keyword(s) -- with exact spelling and descriptions.

    Find/display ACPI predefined name(s) -- with description, number

        of arguments, and the return value data type.

    Find/display AML opcode name(s) -- with opcode, arguments, and grammar.

    Decode/display AML opcode -- with opcode name, arguments, and grammar.

Service Layers: Make multi-thread support configurable. Conditionally compile 

the multi-thread support so that threading libraries will not be linked if not 

necessary. The only tool that requires multi-thread support is AcpiExec.

iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of 

Bison appear to want the interface to yyerror to be a const char * (or at 

least this is a problem when generating iASL on some systems.) ACPICA BZ 923 

Pierre Lejeune.

Tools: Fix for systems where O_BINARY is not defined. Only used for Windows 

versions of the tools.

----------------------------------------

1) ACPI CA Core Subsystem:

ASL Load() operator: Reinstate most restrictions on the incoming ACPI table 

signature. Now, only allow SSDT, OEMx, and a null signature. History:

    1) Originally, we checked the table signature for "SSDT" or "PSDT".

       (PSDT is now obsolete.)

    2) We added support for OEMx tables, signature "OEM" plus a fourth

       "don't care" character.

    3) Valid tables were encountered with a null signature, so we just

       gave up on validating the signature, (05/2008).

    4) We encountered non-AML tables such as the MADT, which caused

       interpreter errors and kernel faults. So now, we once again allow

       only SSDT, OEMx, and now, also a null signature. (05/2011).

Added the missing _TDL predefined name to the global name list in order to 

enable validation. Affects both the core ACPICA code and the iASL compiler.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 

version of the code includes the debug output trace mechanism and has a much 

larger code and data size.

  Previous Release (VC 9.0):

    Non-Debug Version:  90.0K Code, 23.8K Data, 113.8K Total

    Debug Version:     164.5K Code, 68.0K Data, 232.5K Total

  Current Release (VC 9.0):

    Non-Debug Version:  90.1K Code, 23.9K Data, 114.0K Total

    Debug Version:     165.6K Code, 68.4K Data, 234.0K Total

2) iASL Compiler/Disassembler and Tools:

Debugger/AcpiExec: Implemented support for "complex" method arguments on the 

debugger command line. This adds support beyond simple integers -- including 

Strings, Buffers, and Packages. Includes support for nested packages. 

Increased the default command line buffer size to accommodate these arguments. 

See the ACPICA reference for details and syntax. ACPICA BZ 917.

Debugger/AcpiExec: Implemented support for "default" method arguments for the 

Execute/Debug command. Now, the debugger will always invoke a control method 

with the required number of arguments -- even if the command line specifies 

none or insufficient arguments. It uses default integer values for any missing 

arguments. Also fixes a bug where only six method arguments maximum were 

supported instead of the required seven.

Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and 

also return status in order to prevent buffer overruns. See the ACPICA 

reference for details and syntax. ACPICA BZ 921

iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 

makefiles to simplify support for the two different but similar parser 

generators, bison and yacc.

Updated the generic unix makefile for gcc 4. The default gcc version is now 

expected to be 4 or greater, since options specific to gcc 4 are used.

----------------------------------------

13 April 2011. Summary of changes for version 20110413:

1) ACPI CA Core Subsystem:

Implemented support to execute a so-called "orphan" _REG method under the EC 

device. This change will force the execution of a _REG method underneath the 

EC 

device even if there is no corresponding operation region of type 

EmbeddedControl. Fixes a problem seen on some machines and apparently is 

compatible with Windows behavior. ACPICA BZ 875.

Added more predefined methods that are eligible for automatic NULL package 

element removal. This change adds another group of predefined names to the 

list 

of names that can be repaired by having NULL package elements dynamically 

removed. This group are those methods that return a single variable-length 

package containing simple data types such as integers, buffers, strings. This 

includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, 

_Sx, 

and _TZD. ACPICA BZ 914.

Split and segregated all internal global lock functions to a new file, 

evglock.c.

Updated internal address SpaceID for DataTable regions. Moved this internal 

space 

id in preparation for ACPI 5.0 changes that will include some new space IDs. 

This 

change should not affect user/host code.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib 

produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 

the code includes the debug output trace mechanism and has a much larger code 

and 

data size.

  Previous Release (VC 9.0):

    Non-Debug Version:  89.8K Code, 23.8K Data, 113.6K Total

    Debug Version:     164.2K Code, 67.9K Data, 232.1K Total

  Current Release (VC 9.0):

    Non-Debug Version:  90.0K Code, 23.8K Data, 113.8K Total

    Debug Version:     164.5K Code, 68.0K Data, 232.5K Total

2) iASL Compiler/Disassembler and Tools:

iASL/DTC: Major update for new grammar features. Allow generic data types in 

custom ACPI tables. Field names are now optional. Any line can be split to 

multiple lines using the continuation char (\). Large buffers now use line-

continuation character(s) and no colon on the continuation lines. See the 

grammar 

update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore.

iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 

Since the parser stuffs a "zero" as the return value for these statements (due 

to 

the underlying AML grammar), they were seen as "return with value" by the iASL 

semantic checking. They are now seen correctly as "null" return statements.

iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 

check for each _REG to ensure that there is in fact a corresponding operation 

region declaration in the same scope. If not, the _REG method is not very 

useful 

since it probably won't be executed. ACPICA BZ 915.

iASL/DTC: Finish support for expression evaluation. Added a new expression 

parser 

that implements c-style operator precedence and parenthesization. ACPICA 

bugzilla 

908.

Disassembler/DTC: Remove support for () and <> style comments in data tables. 

Now 

that DTC has full expression support, we don't want to have comment strings 

that 

start with a parentheses or a less-than symbol. Now, only the standard /* and 

// 

comments are supported, as well as the bracket [] comments.

AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 

"unusual" 

headers in the acpidump file. Update the header validation to support these 

tables. Problem introduced in previous AcpiXtract version in the change to 

support "wrong checksum" error messages emitted by acpidump utility.

iASL: Add a * option to generate all template files (as a synonym for ALL) as 

in 

"iasl -T *" or "iasl -T ALL".

iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 

abort the compiler on "fatal" errors, simply should abort the current compile. 

This allows multiple compiles with a single (possibly wildcard) compiler 

invocation.

----------------------------------------

16 March 2011. Summary of changes for version 20110316:

1) ACPI CA Core Subsystem:

Fixed a problem caused by a _PRW method appearing at the namespace root scope 

during the setup of wake GPEs. A fault could occur if a _PRW directly under 

the 

root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.

Implemented support for "spurious" Global Lock interrupts. On some systems, a 

global lock interrupt can occur without the pending flag being set. Upon a GL 

interrupt, we now ensure that a thread is actually waiting for the lock before 

signaling GL availability. Rafael Wysocki, Bob Moore.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib 

produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 

the code includes the debug output trace mechanism and has a much larger code 

and 

data size.

  Previous Release (VC 9.0):

    Non-Debug Version:  89.7K Code, 23.7K Data, 113.4K Total

    Debug Version:     163.9K Code, 67.5K Data, 231.4K Total

  Current Release (VC 9.0):

    Non-Debug Version:  89.8K Code, 23.8K Data, 113.6K Total

    Debug Version:     164.2K Code, 67.9K Data, 232.1K Total

2) iASL Compiler/Disassembler and Tools:

Implemented full support for the "SLIC" ACPI table. Includes support in the 

header files, disassembler, table compiler, and template generator. Bob Moore, 

Lin Ming.

AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 

Apparently some or all versions of acpidump will occasionally emit a comment 

like 

"Wrong checksum", etc., into the dump file. This was causing problems for 

AcpiXtract. ACPICA BZ 905.

iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 

ACPICA BZ 913.

AcpiExec: Update installation of operation region handlers. Install one 

handler 

for a user-defined address space. This is used by the ASL test suite (ASLTS).

----------------------------------------

11 February 2011. Summary of changes for version 20110211:

1) ACPI CA Core Subsystem:

Added a mechanism to defer _REG methods for some early-installed handlers. 

Most user handlers should be installed before call to AcpiEnableSubsystem. 

However, Event handlers and region handlers should be installed after 

AcpiInitializeObjects. Override handlers for the "default" regions should be 

installed early, however. This change executes all _REG methods for the 

default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 

chicken/egg issues between them. ACPICA BZ 848.

Implemented an optimization for GPE detection. This optimization will simply 

ignore GPE registers that contain no enabled GPEs -- there is no need to 

read the register since this information is available internally. This 

becomes more important on machines with a large GPE space. ACPICA bugzilla 

884. Lin Ming. Suggestion from Joe Liu.

Removed all use of the highly unreliable FADT revision field. The revision 

number in the FADT has been found to be completely unreliable and cannot be 

trusted. Only the actual table length can be used to infer the version. This 

change updates the ACPICA core and the disassembler so that both no longer 

even look at the FADT version and instead depend solely upon the FADT 

length.

Fix an unresolved name issue for the no-debug and no-error-message source 

generation cases. The _AcpiModuleName was left undefined in these cases, but 

it is actually needed as a parameter to some interfaces. Define 

_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.

Split several large files (makefiles and project files updated)

  utglobal.c   -> utdecode.c

  dbcomds.c    -> dbmethod.c dbnames.c

  dsopcode.c   -> dsargs.c dscontrol.c

  dsload.c     -> dsload2.c

  aslanalyze.c -> aslbtypes.c aslwalks.c

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 

debug version of the code includes the debug output trace mechanism and has 

a much larger code and data size.

  Previous Release (VC 9.0):

    Non-Debug Version:  89.7K Code, 23.7K Data, 113.4K Total

    Debug Version:     163.9K Code, 67.5K Data, 231.4K Total

  Current Release (VC 9.0):

    Non-Debug Version:  89.7K Code, 23.7K Data, 113.4K Total

    Debug Version:     163.9K Code, 67.5K Data, 231.4K Total

2) iASL Compiler/Disassembler and Tools:

iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 

These are useful C-style macros with the standard definitions. ACPICA 

bugzilla 898.

iASL/DTC: Added support for integer expressions and labels. Support for full 

expressions for all integer fields in all ACPI tables. Support for labels in 

"generic" portions of tables such as UEFI. See the iASL reference manual.

Debugger: Added a command to display the status of global handlers. The 

"handlers" command will display op region, fixed event, and miscellaneous 

global handlers. installation status -- and for op regions, whether default 

or user-installed handler will be used.

iASL: Warn if reserved method incorrectly returns a value. Many predefined 

names are defined such that they do not return a value. If implemented as a 

method, issue a warning if such a name explicitly returns a value. ACPICA 

Bugzilla 855.

iASL: Added detection of GPE method name conflicts. Detects a conflict where 

there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 

example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.

iASL/DTC: Fixed a couple input scanner issues with comments and line 

numbers. Comment remover could get confused and miss a comment ending. Fixed 

a problem with line counter maintenance.

iASL/DTC: Reduced the severity of some errors from fatal to error. There is 

no need to abort on simple errors within a field definition.

Debugger: Simplified the output of the help command. All help output now in 

a single screen, instead of help subcommands. ACPICA Bugzilla 897.

----------------------------------------

12 January 2011. Summary of changes for version 20110112:

1) ACPI CA Core Subsystem:

Fixed a race condition between method execution and namespace walks that can 

possibly cause a fault. The problem was apparently introduced in version 

20100528 as a result of a performance optimization that reduces the number of 

namespace walks upon method exit by using the delete_namespace_subtree 

function instead of the delete_namespace_by_owner function used previously. 

Bug is a missing namespace lock in the delete_namespace_subtree function. 

dana.myers@oracle.com

Fixed several issues and a possible fault with the automatic "serialized" 

method support. History: This support changes a method to "serialized" on the 

fly if the method generates an AE_ALREADY_EXISTS error, indicating the 

possibility that it cannot handle reentrancy. This fix repairs a couple of 

issues seen in the field, especially on machines with many cores:

    1) Delete method children only upon the exit of the last thread,

       so as to not delete objects out from under other running threads

      (and possibly causing a fault.)

    2) Set the "serialized" bit for the method only upon the exit of the

       Last thread, so as to not cause deadlock when running threads

       attempt to exit.

    3) Cleanup the use of the AML "MethodFlags" and internal method flags

       so that there is no longer any confusion between the two.

    Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.

Debugger: Now lock the namespace for duration of a namespace dump. Prevents 

issues if the namespace is changing dynamically underneath the debugger. 

Especially affects temporary namespace nodes, since the debugger displays 

these also.

Updated the ordering of include files. The ACPICA headers should appear 

before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 

any necessary compiler-specific defines, etc. Affects the ACPI-related tools 

and utilities.

Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 

to all module headers and signons, including the Linux header. This affects 

virtually every file in the ACPICA core subsystem, iASL compiler, and all 

utilities.

Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 

project files for VC++ 6.0 are now obsolete. New project files can be found 

under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 

details.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 

debug version of the code includes the debug output trace mechanism and has a 

much larger code and data size.

  Previous Release (VC 6.0):

    Non-Debug Version:  89.8K Code, 18.9K Data, 108.7K Total

    Debug Version:     166.6K Code, 52.1K Data, 218.7K Total

  Current Release (VC 9.0):

    Non-Debug Version:  89.7K Code, 23.7K Data, 113.4K Total

    Debug Version:     163.9K Code, 67.5K Data, 231.4K Total

2) iASL Compiler/Disassembler and Tools:

iASL: Added generic data types to the Data Table compiler. Add "generic" data 

types such as UINT32, String, Unicode, etc., to simplify the generation of 

platform-defined tables such as UEFI. Lin Ming.

iASL: Added listing support for the Data Table Compiler. Adds listing support 

(-l) to display actual binary output for each line of input code.

----------------------------------------

09 December 2010. Summary of changes for version 20101209:

1) ACPI CA Core Subsystem:

Completed the major overhaul of the GPE support code that was begun in July 

2010. Major features include: removal of _PRW execution in ACPICA (host 

executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 

changes to existing interfaces, simplification of GPE handler operation, and 

a handful of new interfaces:

    AcpiUpdateAllGpes

    AcpiFinishGpe

    AcpiSetupGpeForWake

    AcpiSetGpeWakeMask

    One new file, evxfgpe.c to consolidate all external GPE interfaces.

See the ACPICA Programmer Reference for full details and programming 

information. See the new section 4.4 "General Purpose Event (GPE) Support" 

for a full overview, and section 8.7 "ACPI General Purpose Event Management" 

for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 

Bob Moore, Rafael Wysocki.

Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 

GPE Notify". This feature will automatically issue a Notify(2) on a device 

when a Wake GPE is received if there is no corresponding GPE method or 

handler. ACPICA BZ 870.

Fixed a problem with the Scope() operator during table parse and load phase. 

During load phase (table load or method execution), the scope operator should 

not enter the target into the namespace. Instead, it should open a new scope 

at the target location. Linux BZ 19462, ACPICA BZ 882.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 

debug version of the code includes the debug output trace mechanism and has a 

much larger code and data size.

  Previous Release:

    Non-Debug Version:  89.8K Code, 18.9K Data, 108.7K Total

    Debug Version:     166.6K Code, 52.1K Data, 218.7K Total

  Current Release:

    Non-Debug Version:  89.9K Code, 19.0K Data, 108.9K Total

    Debug Version:     166.3K Code, 52.1K Data, 218.4K Total

2) iASL Compiler/Disassembler and Tools:

iASL: Relax the alphanumeric restriction on _CID strings. These strings are 

"bus-specific" per the ACPI specification, and therefore any characters are 

acceptable. The only checks that can be performed are for a null string and 

perhaps for a leading asterisk. ACPICA BZ 886.

iASL: Fixed a problem where a syntax error that caused a premature EOF 

condition on the source file emitted a very confusing error message. The 

premature EOF is now detected correctly. ACPICA BZ 891.

Disassembler: Decode the AccessSize within a Generic Address Structure (byte 

access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.

New: AcpiNames utility - Example namespace dump utility. Shows an example of 

ACPICA configuration for a minimal namespace dump utility. Uses table and 

namespace managers, but no AML interpreter. Does not add any functionality 

over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 

partition and configure ACPICA. ACPICA BZ 883.

AML Debugger: Increased the debugger buffer size for method return objects. 

Was 4K, increased to 16K. Also enhanced error messages for debugger method 

execution, including the buffer overflow case.

----------------------------------------

13 October 2010. Summary of changes for version 20101013:

1) ACPI CA Core Subsystem:

Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 

clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 

HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.

Changed the type of the predefined namespace object _TZ from ThermalZone to 

Device. This was found to be confusing to the host software that processes 

the various thermal zones, since _TZ is not really a ThermalZone. However, a 

Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 

Zhang.

Added Windows Vista SP2 to the list of supported _OSI strings. The actual 

string is "Windows 2006 SP2".

Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 

code automatically repairs _HID-related strings, this type of code is no 

longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 

debug version of the code includes the debug output trace mechanism and has a 

much larger code and data size.

  Previous Release:

    Non-Debug Version:  89.9K Code, 19.0K Data, 108.9K Total

    Debug Version:     166.3K Code, 52.1K Data, 218.4K Total

  Current Release:

    Non-Debug Version:  89.9K Code, 19.0K Data, 108.9K Total

    Debug Version:     166.3K Code, 52.1K Data, 218.4K Total

2) iASL Compiler/Disassembler and Tools:

iASL: Implemented additional compile-time validation for _HID strings. The 

non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 

the string must be exactly seven or eight characters. For both _HID and _CID 

strings, all characters must be alphanumeric. ACPICA BZ 874.

iASL: Allow certain "null" resource descriptors. Some BIOS code creates 

descriptors that are mostly or all zeros, with the expectation that they will 

be filled in at runtime. iASL now allows this as long as there is a "resource 

tag" (name) associated with the descriptor, which gives the ASL a handle 

needed to modify the descriptor. ACPICA BZ 873.

Added single-thread support to the generic Unix application OSL. Primarily 

for iASL support, this change removes the use of semaphores in the single-

threaded ACPICA tools/applications - increasing performance. The 

_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 

option. ACPICA BZ 879.

AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 

for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.

iASL: Moved all compiler messages to a new file, aslmessages.h.

----------------------------------------

15 September 2010. Summary of changes for version 20100915:

1) ACPI CA Core Subsystem:

Removed the AcpiOsDerivePciId OSL interface. The various host implementations 

of this function were not OS-dependent and are now obsolete and can be 

removed from all host OSLs. This function has been replaced by 

AcpiHwDerivePciId, which is now part of the ACPICA core code. 

AcpiHwDerivePciId has been implemented without recursion. Adds one new 

module, hwpci.c. ACPICA BZ 857.

Implemented a dynamic repair for _HID and _CID strings. The following 

problems are now repaired at runtime: 1) Remove a leading asterisk in the 

string, and 2) the entire string is uppercased. Both repairs are in 

accordance with the ACPI specification and will simplify host driver code. 

ACPICA BZ 871.

The ACPI_THREAD_ID type is no longer configurable, internally it is now 

always UINT64. This simplifies the ACPICA code, especially any printf output. 

UINT64 is the only common data type for all thread_id types across all 

operating systems. It is now up to the host OSL to cast the native thread_id 

type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 

Lin Ming, Bob Moore.

Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 

keyword is not standard across compilers, and this type allows inline to be 

configured on a per-compiler basis. Lin Ming.

Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 

Added an extern for this boolean in acpixf.h. Some hosts utilize this value 

during suspend/restore operations. ACPICA BZ 869.

All code that implements error/warning messages with the "ACPI:" prefix has 

been moved to a new module, utxferror.c.

The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 

is used. ACPICA BZ 829. Lin Ming, Bob Moore.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 

debug version of the code includes the debug output trace mechanism and has a 

much larger code and data size.

  Previous Release:

    Non-Debug Version:  89.1K Code, 19.0K Data, 108.1K Total

    Debug Version:     165.1K Code, 51.9K Data, 217.0K Total

  Current Release:

    Non-Debug Version:  89.9K Code, 19.0K Data, 108.9K Total

    Debug Version:     166.3K Code, 52.1K Data, 218.4K Total

2) iASL Compiler/Disassembler and Tools:

iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 

This keeps the output files free of random error messages that may originate 

from within the namespace/interpreter code. Used this opportunity to merge 

all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 

866. Lin Ming, Bob Moore.

Tools: update some printfs for ansi warnings on size_t. Handle width change 

of size_t on 32-bit versus 64-bit generations. Lin Ming.

----------------------------------------

06 August 2010. Summary of changes for version 20100806:

1) ACPI CA Core Subsystem:

Designed and implemented a new host interface to the _OSI support code. This 

will allow the host to dynamically add or remove multiple _OSI strings, as 

well as install an optional handler that is called for each _OSI invocation. 

Also added a new AML debugger command, 'osi' to display and modify the global 

_OSI string table, and test support in the AcpiExec utility. See the ACPICA 

reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.

New Functions:

    AcpiInstallInterface - Add an _OSI string.

    AcpiRemoveInterface - Delete an _OSI string.

    AcpiInstallInterfaceHandler - Install optional _OSI handler.

Obsolete Functions:

    AcpiOsValidateInterface - no longer used.

New Files:

    source/components/utilities/utosi.c

Re-introduced the support to enable multi-byte transfers for Embedded 

Controller (EC) operation regions. A reported problem was found to be a bug 

in the host OS, not in the multi-byte support. Previously, the maximum data 

size passed to the EC operation region handler was a single byte. There are 

often EC Fields larger than one byte that need to be transferred, and it is 

useful for the EC driver to lock these as a single transaction. This change 

enables single transfers larger than 8 bits. This effectively changes the 

access to the EC space from ByteAcc to AnyAcc, and will probably require 

changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 

transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.

Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 

prototype in acpiosxf.h had the output value pointer as a (void *).

It should be a (UINT64 *). This may affect some host OSL code.

Fixed a couple problems with the recently modified Linux makefiles for iASL 

and AcpiExec. These new makefiles place the generated object files in the 

local directory so that there can be no collisions between the files that are 

shared between them that are compiled with different options.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 

debug version of the code includes the debug output trace mechanism and has a 

much larger code and data size.

  Previous Release:

    Non-Debug Version:  88.3K Code, 18.8K Data, 107.1K Total

    Debug Version:     164.0K Code, 51.5K Data, 215.5K Total

  Current Release:

    Non-Debug Version:  89.1K Code, 19.0K Data, 108.1K Total

    Debug Version:     165.1K Code, 51.9K Data, 217.0K Total

2) iASL Compiler/Disassembler and Tools:

iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 

namespace from and disassemble an entire group of AML files. Useful for 

loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 

disassembling with one simple command. ACPICA BZ 865. Lin Ming.

iASL: Allow multiple invocations of -e option. This change allows multiple 

uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 

Lin Ming.

----------------------------------------

02 July 2010. Summary of changes for version 20100702:

1) ACPI CA Core Subsystem:

Implemented several updates to the recently added GPE reference count 

support. The model for "wake" GPEs is changing to give the host OS complete 

control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 

methods, since the host already must execute them. Also, additional changes 

were made to help ensure that the reference counts are kept in proper 

synchronization with reality. Rafael J. Wysocki.

1) Ensure that GPEs are not enabled twice during initialization.

2) Ensure that GPE enable masks stay in sync with the reference count.

3) Do not inadvertently enable GPEs when writing GPE registers.

4) Remove the internal wake reference counter and add new AcpiGpeWakeup 

interface. This interface will set or clear individual GPEs for wakeup.

5) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 

are now used for "runtime" GPEs only.

Changed the behavior of the GPE install/remove handler interfaces. The GPE is 

no longer disabled during this process, as it was found to cause problems on 

some machines. Rafael J. Wysocki.

Reverted a change introduced in version 20100528 to enable Embedded 

Controller multi-byte transfers. This change was found to cause problems with 

Index Fields and possibly Bank Fields. It will be reintroduced when these 

problems have been resolved.

Fixed a problem with references to Alias objects within Package Objects. A 

reference to an Alias within the definition of a Package was not always 

resolved properly. Aliases to objects like Processors, Thermal zones, etc. 

were resolved to the actual object instead of a reference to the object as it 

should be. Package objects are only allowed to contain integer, string, 

buffer, package, and reference objects. Redhat bugzilla 608648.

Example Code and Data Size: These are the sizes for the OS-independent 

acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 

debug version of the code includes the debug output trace mechanism and has a 

much larger code and data size.

  Previous Release:

    Non-Debug Version:  88.3K Code, 18.8K Data, 107.1K Total

    Debug Version:     164.1K Code, 51.5K Data, 215.6K Total

  Current Release:

    Non-Debug Version:  88.3K Code, 18.8K Data, 107.1K Total

    Debug Version:     164.0K Code, 51.5K Data, 215.5K Total

2) iASL Compiler/Disassembler and Tools:

iASL: Implemented a new compiler subsystem to allow definition and 

compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 

are called "ACPI Data Tables", and the new compiler is the "Data Table 

Compiler". This compiler is intended to simplify the existing error-prone 

process of creating these tables for the BIOS, as well as allowing the 

disassembly, modification, recompilation, and override of existing ACPI data 

tables. See the iASL User Guide for detailed information.

iASL: Implemented a new Template Generator option in support of the new Data 

Table Compiler. This option will create examples of all known ACPI tables 

that can be used as the basis for table development. See the iASL 

documentation and the -T option.

Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 

Descriptor Table).

Updated the Linux makefiles for iASL and AcpiExec to place the generated 

object files in the local directory so that there can be no collisions 

between the shared files between them that are generated with different 

options.

Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 

the #define __APPLE__ to enable this support.

----------------------------------------