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Diffstat (limited to 'sys/contrib/dev/acpica/changes.txt')
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diff --git a/sys/contrib/dev/acpica/changes.txt b/sys/contrib/dev/acpica/changes.txt index 60620ce..d2c8c0e 100644 --- a/sys/contrib/dev/acpica/changes.txt +++ b/sys/contrib/dev/acpica/changes.txt @@ -1,4 +1,132 @@ ---------------------------------------- +31 March 2010. Summary of changes for version 20100331: + +1) ACPI CA Core Subsystem: + +Completed a major update for the GPE support in order to improve support for +shared GPEs and to simplify both host OS and ACPICA code. Added a reference +count mechanism to support shared GPEs that require multiple device drivers. +Several external interfaces have changed. One external interface has been +removed. One new external interface was added. Most of the GPE external +interfaces now use the GPE spinlock instead of the events mutex (and the +Flags parameter for many GPE interfaces has been removed.) See the updated +ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael +Wysocki. ACPICA BZ 831. + +Changed: + AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus +Removed: + AcpiSetGpeType +New: + AcpiSetGpe + +Implemented write support for DataTable operation regions. These regions are +defined via the DataTableRegion() operator. Previously, only read support was +implemented. The ACPI specification allows DataTableRegions to be read/write, +however. + +Implemented a new subsystem option to force a copy of the DSDT to local +memory. Optionally copy the entire DSDT to local memory (instead of simply +mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace +the original DSDT, creating the need for this option. Default is FALSE, do +not copy the DSDT. + +Implemented detection of a corrupted or replaced DSDT. This change adds +support to detect a DSDT that has been corrupted and/or replaced from outside +the OS (by firmware). This is typically catastrophic for the system, but has +been seen on some machines. Once this problem has been detected, the DSDT +copy option can be enabled via system configuration. Lin Ming, Bob Moore. + +Fixed two problems with AcpiReallocateRootTable during the root table copy. +When copying the root table to the new allocation, the length used was +incorrect. The new size was used instead of the current table size, meaning +too much data was copied. Also, the count of available slots for ACPI tables +was not set correctly. Alexey Starikovskiy, 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: 87.5K Code, 18.4K Data, 105.9K Total + Debug Version: 163.4K Code, 51.1K Data, 214.5K Total + Current Release: + Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total + Debug Version: 163.5K Code, 51.3K Data, 214.8K Total + +2) iASL Compiler/Disassembler and Tools: + +iASL: Implement limited typechecking for values returned from predefined +control methods. The type of any returned static (unnamed) object is now +validated. For example, Return(1). ACPICA BZ 786. + +iASL: Fixed a predefined name object verification regression. Fixes a problem +introduced in version 20100304. An error is incorrectly generated if a +predefined name is declared as a static named object with a value defined +using the keywords "Zero", "One", or "Ones". Lin Ming. + +iASL: Added Windows 7 support for the -g option (get local ACPI tables) by +reducing the requested registry access rights. ACPICA BZ 842. + +Disassembler: fixed a possible fault when generating External() statements. +Introduced in commit ae7d6fd: Properly handle externals with parent-prefix +(carat). Fixes a string length allocation calculation. Lin Ming. + +---------------------------------------- +04 March 2010. Summary of changes for version 20100304: + +1) ACPI CA Core Subsystem: + +Fixed a possible problem with the AML Mutex handling function +AcpiExReleaseMutex where the function could fault under the very rare +condition when the interpreter has blocked, the interpreter lock is released, +the interpreter is then reentered via the same thread, and attempts to +acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin +Ming. + +Implemented additional configuration support for the AML "Debug Object". +Output from the debug object can now be enabled via a global variable, +AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. +This debug output is now available in the release version of ACPICA instead +of just the debug version. Also, the entire debug output module can now be +configured out of the ACPICA build if desired. One new file added, +executer/exdebug.c. Lin Ming, Bob Moore. + +Added header support for the ACPI MCHI table (Management Controller Host +Interface Table). This table was added in ACPI 4.0, but the defining document +has only recently become available. + +Standardized output of integer values for ACPICA warnings/errors. Always use +0x prefix for hex output, always use %u for unsigned integer decimal output. +Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 +invocations.) These invocations were converted from the original +ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. + +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: 87.1K Code, 18.0K Data, 105.1K Total + Debug Version: 163.5K Code, 50.9K Data, 214.4K Total + Current Release: + Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total + Debug Version: 163.4K Code, 51.1K Data, 214.5K Total + +2) iASL Compiler/Disassembler and Tools: + +iASL: Implemented typechecking support for static (non-control method) +predefined named objects that are declared with the Name() operator. For +example, the type of this object is now validated to be of type Integer: +Name(_BBN, 1). This change migrates the compiler to using the core predefined +name table instead of maintaining a local version. Added a new file, +aslpredef.c. ACPICA BZ 832. + +Disassembler: Added support for the ACPI 4.0 MCHI table. + +---------------------------------------- 21 January 2010. Summary of changes for version 20100121: 1) ACPI CA Core Subsystem: |
