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diff --git a/changes.txt b/changes.txt index 2123937..605e678 100644 --- a/changes.txt +++ b/changes.txt @@ -1,4 +1,82 @@ ---------------------------------------- +11 July 2012. Summary of changes for version 20120711: + +This release is available at https://www.acpica.org/downloads The ACPI 5.0 +specification is available at www.acpi.info + +1) ACPICA Kernel-resident Subsystem: + +Fixed a possible fault in the return package object repair code. Fixes a +problem that can occur when a lone package object is wrapped with an outer +package object in order to force conformance to the ACPI specification. Can +affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, _DLM, +_CSD, _PSD, _TSD. + +Removed code to disable/enable bus master arbitration (ARB_DIS bit in the +PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the +ARB_DIS bit must be implemented in the host-dependent C3 processor power state +support. Note, ARB_DIS is obsolete and only applies to older chipsets, both +Intel and other vendors. (for Intel: ICH4-M and earlier) + +This change removes the code to disable/enable bus master arbitration during +suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register causes +resume problems on some machines. The change has been in use for over seven +years within Linux. + +Implemented two new external interfaces to support host-directed dynamic ACPI +table load and unload. They are intended to simplify the host implementation +of hot-plug support: + AcpiLoadTable: Load an SSDT from a buffer into the namespace. + AcpiUnloadParentTable: Unload an SSDT via a named object owned by the table. +See the ACPICA reference for additional details. Adds one new file, +components/tables/tbxfload.c + +Implemented and deployed two new interfaces for errors and warnings that are +known to be caused by BIOS/firmware issues: + AcpiBiosError: Prints "ACPI Firmware Error" message. + AcpiBiosWarning: Prints "ACPI Firmware Warning" message. +Deployed these new interfaces in the ACPICA Table Manager code for ACPI table +and FADT errors. Additional deployment to be completed as appropriate in the +future. The associated conditional macros are ACPI_BIOS_ERROR and +ACPI_BIOS_WARNING. See the ACPICA reference for additional details. ACPICA BZ +843. + +Implicit notify support: ensure that no memory allocation occurs within a +critical region. This fix moves a memory allocation outside of the time that a +spinlock is held. Fixes issues on systems that do not allow this behavior. +Jung-uk Kim. + +Split exception code utilities and tables into a new file, utilities/utexcep.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: + Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total + Debug Version: 172.9K Code, 73.6K Data, 246.5K Total + Current Release: + Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total + Debug Version: 173.7K Code, 74.0K Data, 247.7K Total + + +2) iASL Compiler/Disassembler and Tools: + +iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead of +0. Jung-uk Kim. + +Debugger: Enhanced the "tables" command to emit additional information about +the current set of ACPI tables, including the owner ID and flags decode. + +Debugger: Reimplemented the "unload" command to use the new +AcpiUnloadParentTable external interface. This command was disable previously +due to need for an unload interface. + +AcpiHelp: Added a new option to decode ACPICA exception codes. The -e option +will decode 16-bit hex status codes (ACPI_STATUS) to name strings. + +---------------------------------------- 20 June 2012. Summary of changes for version 20120620: This release is available at https://www.acpica.org/downloads |