changes.txt

acpi tools for linux include acpiexec and acpixtract

eliminated namespace loading during the pass one parse.)

Implemented _CID support for PCI Root Bridge detection. If the _HID does not 
match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 
obtained and also checked for an ID match.

Implemented additional support for the PCI _ADR execution: upsearch until a 
device scope is found before executing _ADR. This allows PCI_Config 
operation regions to be declared locally within control methods underneath 
PCI device objects.

Fixed a problem with a possible race condition between threads executing 
AcpiWalkNamespace and the AML interpreter. This condition was removed by 
modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 
entries created during any concurrent control method execution. An 
additional namespace race condition is known to exist between 
AcpiWalkNamespace and the Load/Unload ASL operators and is still under 
investigation.

Restructured the AML ParseLoop function, breaking it into several 
subfunctions in order to reduce CPU stack use and improve maintainability. 
(Mikhail Kouzmich)

AcpiGetHandle: Fix for parameter validation to detect invalid combinations 
of prefix handle and pathname. BZ 478

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:  77.9K Code, 17.1K Data,  95.0K Total
    Debug Version:     154.6K Code, 63.0K Data, 217.6K Total
  Current Release:
    Non-Debug Version:  78.1K Code, 17.1K Data,  95.2K Total
    Debug Version:     155.4K Code, 63.1K Data, 218.5K Total

2) iASL Compiler/Disassembler and Tools:

Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 
to restore original behavior.

----------------------------------------
27 September 2006. Summary of changes for version 20060927:

1) ACPI CA Core Subsystem:

Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 
These functions now use a spinlock for mutual exclusion and the interrupt 
level indication flag is not needed.

Fixed a problem with the Global Lock where the lock could appear to be 
obtained before it is actually obtained. The global lock semaphore was 
inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 
Suietov.

Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 
a read from a buffer or region field. (BZ 458) Fiodor Suietov.

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:  77.9K Code, 17.1K Data,  95.0K Total
    Debug Version:     154.7K Code, 63.0K Data, 217.7K Total
  Current Release:
    Non-Debug Version:  77.9K Code, 17.1K Data,  95.0K Total
    Debug Version:     154.6K Code, 63.0K Data, 217.6K Total


2) iASL Compiler/Disassembler and Tools:

Fixed a compilation problem with the pre-defined Resource Descriptor field 
names where an "object does not exist" error could be incorrectly generated 
if the parent ResourceTemplate pathname places the template within a 
different namespace scope than the current scope. (BZ 7212)

Fixed a problem where the compiler could hang after syntax errors detected 
in an ElseIf construct. (BZ 453)

Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 
operator. An incorrect output filename was produced when this parameter was 
a null string (""). Now, the original input filename is used as the AML 
output filename, with an ".aml" extension.

Implemented a generic batch command mode for the AcpiExec utility (execute 
any AML debugger command) (Valery Podrezov).

----------------------------------------
12 September 2006. Summary of changes for version 20060912:

1) ACPI CA Core Subsystem:

Enhanced the implementation of the "serialized mode" of the interpreter 
(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 
specified, instead of creating a serialization semaphore per control method, 
the interpreter lock is simply no longer released before a blocking 
operation during control method execution. This effectively makes the AML 
Interpreter single-threaded. The overhead of a semaphore per-method is 
eliminated.

Fixed a regression where an error was no longer emitted if a control method 
attempts to create 2 objects of the same name. This once again returns 
AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 
will dynamically serialize the control method to possible prevent future 
errors. (BZ 440)

Integrated a fix for a problem with PCI Express HID detection in the PCI 
Config Space setup procedure. (BZ 7145)

Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 
AcpiHwInitialize function - the FADT registers are now validated when the 
table is loaded.

Added two new warnings during FADT verification - 1) if the FADT is larger 
than the largest known FADT version, and 2) if there is a mismatch between a 
32-bit block address and the 64-bit X counterpart (when both are non-zero.)

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:  77.9K Code, 16.7K Data,  94.6K Total
    Debug Version:     154.9K Code, 62.6K Data, 217.5K Total
  Current Release:
    Non-Debug Version:  77.9K Code, 17.1K Data,  95.0K Total
    Debug Version:     154.7K Code, 63.0K Data, 217.7K Total


2) iASL Compiler/Disassembler and Tools:

Fixed a problem with the implementation of the Switch() operator where the 
temporary variable was declared too close to the actual Switch, instead of 
at method level. This could cause a problem if the Switch() operator is 
within a while loop, causing an error on the second iteration. (BZ 460)

Disassembler - fix for error emitted for unknown type for target of scope 
operator. Now, ignore it and continue.

Disassembly of an FADT now verifies the input FADT and reports any errors 
found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.

Disassembly of raw data buffers with byte initialization data now prefixes 
each output line with the current buffer offset.

Disassembly of ASF! table now includes all variable-length data fields at 
the end of some of the subtables.

The disassembler now emits a comment if a buffer appears to be a 
ResourceTemplate, but cannot be disassembled as such because the EndTag does 
not appear at the very end of the buffer.

AcpiExec - Added the "-t" command line option to enable the serialized mode 
of the AML interpreter.

----------------------------------------
31 August 2006. Summary of changes for version 20060831:

1) ACPI CA Core Subsystem:

Miscellaneous fixes for the Table Manager:
- Correctly initialize internal common FADT for all 64-bit "X" fields
- Fixed a couple table mapping issues during table load
- Fixed a couple alignment issues for IA64
- Initialize input array to zero in AcpiInitializeTables
- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 
AcpiGetTableByIndex

Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 
immediately disabled to prevent the waking GPE from firing again and to 
prevent other wake GPEs from interrupting the wake process.

Added the AcpiGpeCount global that tracks the number of processed GPEs, to 
be used for debugging systems with a large number of ACPI interrupts.

Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 
both the ACPICA headers and the disassembler.

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:  77.8K Code, 16.5K Data,  94.3K Total
    Debug Version:     154.6K Code, 62.3K Data, 216.9K Total
  Current Release:
    Non-Debug Version:  77.9K Code, 16.7K Data,  94.6K Total
    Debug Version:     154.9K Code, 62.6K Data, 217.5K Total


2) iASL Compiler/Disassembler and Tools:

Disassembler support for the DMAR ACPI table.

----------------------------------------
23 August 2006. Summary of changes for version 20060823:

1) ACPI CA Core Subsystem:

The Table Manager component has been completely redesigned and 
reimplemented. The new design is much simpler, and reduces the overall code 
and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 
now possible to obtain the ACPI tables very early during kernel 
initialization, even before dynamic memory management is initialized. 
(Alexey Starikovskiy, Fiodor Suietov, Bob Moore)

Obsolete ACPICA interfaces:

- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 
time).
- AcpiLoadTable: Not needed.
- AcpiUnloadTable: Not needed.

New ACPICA interfaces:

- AcpiInitializeTables: Must be called before the table manager can be used.
- AcpiReallocateRootTable: Used to transfer the root table to dynamically 
allocated memory after it becomes available.
- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 
in the RSDT/XSDT.

Other ACPICA changes:

- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 
AcpiOsUnmapMemory to free this mapping.
- AcpiGetTable returns the actual mapped table. The mapping is managed 
internally and must not be deleted by the caller. Use of this interface 
causes no additional dynamic memory allocation.
- AcpiFindRootPointer: Support for physical addressing has been eliminated, 
it appeared to be unused.
- The interface to AcpiOsMapMemory has changed to be consistent with the 
other allocation interfaces.
- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 
parameters.
- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64-
bit platforms. Was previously 64 bits on all platforms.
- The interface to the ACPI Global Lock acquire/release macros have changed 
slightly since ACPICA no longer keeps a local copy of the FACS with a 
constructed pointer to the actual global lock.

Porting to the new table manager:

- AcpiInitializeTables: Must be called once, and can be called anytime 
during the OS initialization process. It allows the host to specify an area 
of memory to be used to store the internal version of the RSDT/XSDT (root 
table). This allows the host to access ACPI tables before memory management 
is initialized and running.
- AcpiReallocateRootTable: Can be called after memory management is running 
to copy the root table to a dynamically allocated array, freeing up the 
scratch memory specified in the call to AcpiInitializeTables.
- AcpiSubsystemInitialize: This existing interface is independent of the 
Table Manager, and does not have to be called before the Table Manager can 
be used, it only must be called before the rest of ACPICA can be used.
- ACPI Tables: Some changes have been made to the names and structure of the 
actbl.h and actbl1.h header files and may require changes to existing code. 
For example, bitfields have been completely removed because of their lack of 
portability across C compilers.
- Update interfaces to the Global Lock acquire/release macros if local 
versions are used. (see acwin.h)

Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c

New files: tbfind.c

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:  80.7K Code, 17.9K Data,  98.6K Total
    Debug Version:     161.0K Code, 65.1K Data, 226.1K Total
  Current Release:
    Non-Debug Version:  77.8K Code, 16.5K Data,  94.3K Total
    Debug Version:     154.6K Code, 62.3K Data, 216.9K Total


2) iASL Compiler/Disassembler and Tools:

No changes for this release.