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update to acpica-unix2-20140114
update to acpica-unix2-20131218
update to acpica-unix2-20131115
update to acpica-unix2-20130927
acpica-unix2-20130823
PANKOVs restructure
@@ -1,13 +1,2572 @@
----------------------------------------
-27 May 2011. Summary of changes for version 20110527:
+14 January 2014. Summary of changes for version 20140114:
-This release is available at www.acpica.org/downloads
+1) ACPICA kernel-resident subsystem:
+Updated all ACPICA copyrights and signons to 2014. Added the 2014
+copyright to all module headers and signons, including the standard Linux
+header. This affects virtually every file in the ACPICA core subsystem,
+iASL compiler, all ACPICA utilities, and the test suites.
+
+Improved parameter validation for AcpiInstallGpeBlock. Added the
+following checks:
+1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
+2) There is not already a GPE block attached to the device.
+Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
+device.
+
+Correctly support "references" in the ACPI_OBJECT. This change fixes the
+support to allow references (namespace nodes) to be passed as arguments
+to control methods via the evaluate object interface. This is probably
+most useful for testing purposes, however.
+
+Improved support for 32/64 bit physical addresses in printf()-like
+output. This change improves the support for physical addresses in printf
+debug statements and other output on both 32-bit and 64-bit hosts. It
+consistently outputs the appropriate number of bytes for each host. The
+%p specifier is unsatisfactory since it does not emit uniform output on
+all hosts/clib implementations (on some, leading zeros are not supported,
+leading to difficult-to-read output).
+
+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.
+
+ Current Release:
+ Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
+ Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
+ Previous Release:
+ Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
+ Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Fix a possible fault when using the Connection() operator. Fixes a
+problem if the parent Field definition for the Connection operator refers
+to an operation region that does not exist. ACPICA BZ 1064.
+
+AcpiExec: Load of local test tables is now optional. The utility has the
+capability to load some various tables to test features of ACPICA.
+However, there are enough of them that the output of the utility became
+confusing. With this change, only the required local tables are displayed
+(RSDP, XSDT, etc.) along with the actual tables loaded via the command
+line specification. This makes the default output simler and easier to
+understand. The -el command line option restores the original behavior
+for testing purposes.
+
+AcpiExec: Added support for overlapping operation regions. This change
+expands the simulation of operation regions by supporting regions that
+overlap within the given address space. Supports SystemMemory and
+SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
+
+AcpiExec: Added region handler support for PCI_Config and EC spaces. This
+allows AcpiExec to simulate these address spaces, similar to the current
+support for SystemMemory and SystemIO.
+
+Debugger: Added new command to read/write/compare all namespace objects.
+The command "test objects" will exercise the entire namespace by writing
+new values to each data object, and ensuring that the write was
+successful. The original value is then restored and verified.
+
+Debugger: Added the "test predefined" command. This change makes this
+test public and puts it under the new "test" command. The test executes
+each and every predefined name within the current namespace.
+
+----------------------------------------
+18 December 2013. Summary of changes for version 20131218:
+
+Global note: The ACPI 5.0A specification was released this month. There
+are no changes needed for ACPICA since this release of ACPI is an
+errata/clarification release. The specification is available at
+acpi.info.
+
+
+1) ACPICA kernel-resident subsystem:
+
+Added validation of the XSDT root table if it is present. Some older
+platforms contain an XSDT that is ill-formed or otherwise invalid (such
+as containing some or all entries that are NULL pointers). This change
+adds a new function to validate the XSDT before actually using it. If the
+XSDT is found to be invalid, ACPICA will now automatically fall back to
+using the RSDT instead. Original implementation by Zhao Yakui. Ported to
+ACPICA and enhanced by Lv Zheng and Bob Moore.
+
+Added a runtime option to ignore the XSDT and force the use of the RSDT.
+This change adds a runtime option that will force ACPICA to use the RSDT
+instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
+requires that an XSDT be used instead of the RSDT, the XSDT has been
+found to be corrupt or ill-formed on some machines. Lv Zheng.
+
+Added a runtime option to favor 32-bit FADT register addresses over the
+64-bit addresses. This change adds an option to favor 32-bit FADT
+addresses when there is a conflict between the 32-bit and 64-bit versions
+of the same register. The default behavior is to use the 64-bit version
+in accordance with the ACPI specification. This can now be overridden via
+the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
+
+During the change above, the internal "Convert FADT" and "Verify FADT"
+functions have been merged to simplify the code, making it easier to
+understand and maintain. ACPICA BZ 933.
+
+Improve exception reporting and handling for GPE block installation.
+Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
+status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
+
+Added helper macros to extract bus/segment numbers from the HEST table.
+This change adds two macros to extract the encoded bus and segment
+numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
+Betty Dall <betty.dall@hp.com>
+
+Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
+by ACPICA. It is not a public macro, so it should have no effect on
+existing OSV code. Lv Zheng.
+
+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.
+
+ Current Release:
+ Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
+ Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
+ Previous Release:
+ Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
+ Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Disassembler: Improved pathname support for emitted External()
+statements. This change adds full pathname support for external names
+that have been resolved internally by the inclusion of additional ACPI
+tables (via the iASL -e option). Without this change, the disassembler
+can emit multiple externals for the same object, or it become confused
+when the Scope() operator is used on an external object. Overall, greatly
+improves the ability to actually recompile the emitted ASL code when
+objects a referenced across multiple ACPI tables. Reported by Michael
+Tsirkin (mst@redhat.com).
+
+Tests/ASLTS: Updated functional control suite to execute with no errors.
+David Box. Fixed several errors related to the testing of the interpreter
+slack mode. Lv Zheng.
+
+iASL: Added support to detect names that are declared within a control
+method, but are unused (these are temporary names that are only valid
+during the time the method is executing). A remark is issued for these
+cases. ACPICA BZ 1022.
+
+iASL: Added full support for the DBG2 table. Adds full disassembler,
+table compiler, and template generator support for the DBG2 table (Debug
+Port 2 table).
+
+iASL: Added full support for the PCCT table, update the table definition.
+Updates the PCCT table definition in the actbl3.h header and adds table
+compiler and template generator support.
+
+iASL: Added an option to emit only error messages (no warnings/remarks).
+The -ve option will enable only error messages, warnings and remarks are
+suppressed. This can simplify debugging when only the errors are
+important, such as when an ACPI table is disassembled and there are many
+warnings and remarks -- but only the actual errors are of real interest.
+
+Example ACPICA code (source/tools/examples): Updated the example code so
+that it builds to an actual working program, not just example code. Added
+ACPI tables and execution of an example control method in the DSDT. Added
+makefile support for Unix generation.
+
+----------------------------------------
+15 November 2013. Summary of changes for version 20131115:
+
+This release is available at https://acpica.org/downloads
+
+
+1) ACPICA kernel-resident subsystem:
+
+Resource Manager: Fixed loop termination for the "get AML length"
+function. The loop previously had an error termination on a NULL resource
+pointer, which can never happen since the loop simply increments a valid
+resource pointer. This fix changes the loop to terminate with an error on
+an invalid end-of-buffer condition. The problem can be seen as an
+infinite loop by callers to AcpiSetCurrentResources with an invalid or
+corrupted resource descriptor, or a resource descriptor that is missing
+an END_TAG descriptor. Reported by Dan Carpenter
+<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
+
+Table unload and ACPICA termination: Delete all attached data objects
+during namespace node deletion. This fix updates namespace node deletion
+to delete the entire list of attached objects (attached via
+AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
+1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
+
+ACPICA termination: Added support to delete all objects attached to the
+root namespace node. This fix deletes any and all objects that have been
+attached to the root node via AcpiAttachData. Previously, none of these
+objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
+
+Debug output: Do not emit the function nesting level for the in-kernel
+build. The nesting level is really only useful during a single-thread
+execution. Therefore, only enable this output for the AcpiExec utility.
+Also, only emit the thread ID when executing under AcpiExec (Context
+switches are still always detected and a message is emitted). ACPICA BZ
+972.
+
+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.
+
+ Current Release:
+ Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
+ Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
+ Previous Release:
+ Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
+ Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
+correct portable POSIX header for terminal control functions.
+
+Disassembler: Fixed control method invocation issues related to the use
+of the CondRefOf() operator. The problem is seen in the disassembly where
+control method invocations may not be disassembled properly if the
+control method name has been used previously as an argument to CondRefOf.
+The solution is to not attempt to emit an external declaration for the
+CondRefOf target (it is not necessary in the first place). This prevents
+disassembler object type confusion. ACPICA BZ 988.
+
+Unix Makefiles: Added an option to disable compiler optimizations and the
+_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
+with optimizations (reportedly, gcc 4.4 for example). This change adds a
+command line option for make (NOOPT) that disables all compiler
+optimizations and the _FORTIFY_SOURCE compiler flag. The default
+optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
+1034. Lv Zheng, Bob Moore.
+
+Tests/ASLTS: Added options to specify individual test cases and modes.
+This allows testers running aslts.sh to optionally specify individual
+test modes and test cases. Also added an option to disable the forced
+generation of the ACPICA tools from source if desired. Lv Zheng.
+
+----------------------------------------
+27 September 2013. Summary of changes for version 20130927:
+
+This release is available at https://acpica.org/downloads
+
+
+1) ACPICA kernel-resident subsystem:
+
+Fixed a problem with store operations to reference objects. This change
+fixes a problem where a Store operation to an ArgX object that contained
+a
+reference to a field object did not complete the automatic dereference
+and
+then write to the actual field object. Instead, the object type of the
+field object was inadvertently changed to match the type of the source
+operand. The new behavior will actually write to the field object (buffer
+field or field unit), thus matching the correct ACPI-defined behavior.
+
+Implemented support to allow the host to redefine individual OSL
+prototypes. This change enables the host to redefine OSL prototypes found
+in the acpiosxf.h file. This allows the host to implement OSL interfaces
+with a macro or inlined function. Further, it allows the host to add any
+additional required modifiers such as __iomem, __init, __exit, etc., as
+necessary on a per-interface basis. Enables maximum flexibility for the
+OSL interfaces. Lv Zheng.
+
+Hardcoded the access width for the FADT-defined reset register. The ACPI
+specification requires the reset register width to be 8 bits. ACPICA now
+hardcodes the width to 8 and ignores the FADT width value. This provides
+compatibility with other ACPI implementations that have allowed BIOS code
+with bad register width values to go unnoticed. Matthew Garett, Bob
+Moore,
+Lv Zheng.
+
+Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
+used
+in the OSL header (acpiosxf). The change modifies the position of this
+macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
+build issues if the OSL defines the implementation of the interface to be
+an inline stub function. Lv Zheng.
+
+Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
+initialization interfaces. This change adds a new macro for the main init
+and terminate external interfaces in order to support hosts that require
+additional or different processing for these functions. Changed from
+ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
+Zheng, Bob Moore.
+
+Cleaned up the memory allocation macros for configurability. In the
+common
+case, the ACPI_ALLOCATE and related macros now resolve directly to their
+respective AcpiOs* OSL interfaces. Two options:
+1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
+default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
+2) For AcpiExec (and for debugging), the macros can optionally be
+resolved
+to the local ACPICA interfaces that track each allocation (local tracking
+is used to immediately detect memory leaks).
+Lv Zheng.
+
+Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
+to predefine this macro to either TRUE or FALSE during the system build.
+
+Replaced __FUNCTION_ with __func__ in the gcc-specific header.
+
+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.
+
+ Current Release:
+ Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
+ Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
+ Previous Release:
+ Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
+ Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Implemented wildcard support for the -e option. This simplifies use
+when there are many SSDTs that must be included to resolve external
+method
+declarations. ACPICA BZ 1041. Example:
+ iasl -e ssdt*.dat -d dsdt.dat
+
+AcpiExec: Add history/line-editing for Unix/Linux systems. This change
+adds a portable module that implements full history and limited line
+editing for Unix and Linux systems. It does not use readline() due to
+portability issues. Instead it uses the POSIX termio interface to put the
+terminal in raw input mode so that the various special keys can be
+trapped
+(such as up/down-arrow for history support and left/right-arrow for line
+editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
+
+AcpiXtract: Add support to handle (ignore) "empty" lines containing only
+one or more spaces. This provides compatible with early or different
+versions of the AcpiDump utility. ACPICA BZ 1044.
+
+AcpiDump: Do not ignore tables that contain only an ACPI table header.
+Apparently, some BIOSs create SSDTs that contain an ACPI table header but
+no other data. This change adds support to dump these tables. Any tables
+shorter than the length of an ACPI table header remain in error (an error
+message is emitted). Reported by Yi Li.
+
+Debugger: Echo actual command along with the "unknown command" message.
+
+----------------------------------------
+23 August 2013. Summary of changes for version 20130823:
+
+1) ACPICA kernel-resident subsystem:
+
+Implemented support for host-installed System Control Interrupt (SCI)
+handlers. Certain ACPI functionality requires the host to handle raw
+SCIs. For example, the "SCI Doorbell" that is defined for memory power
+state support requires the host device driver to handle SCIs to examine
+if the doorbell has been activated. Multiple SCI handlers can be
+installed to allow for future expansion. New external interfaces are
+AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
+details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
+
+Operation region support: Never locally free the handler "context"
+pointer. This change removes some dangerous code that attempts to free
+the handler context pointer in some (rare) circumstances. The owner of
+the handler owns this pointer and the ACPICA code should never touch it.
+Although not seen to be an issue in any kernel, it did show up as a
+problem (fault) under AcpiExec. Also, set the internal storage field for
+the context pointer to zero when the region is deactivated, simply for
+sanity. David Box. ACPICA BZ 1039.
+
+AcpiRead: On error, do not modify the return value target location. If an
+error happens in the middle of a split 32/32 64-bit I/O operation, do not
+modify the target of the return value pointer. Makes the code consistent
+with the rest of ACPICA. Bjorn Helgaas.
+
+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.
+
+ Current Release:
+ Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
+ Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
+ Previous Release:
+ Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
+ Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+AcpiDump: Implemented several new features and fixed some problems:
+1) Added support to dump the RSDP, RSDT, and XSDT tables.
+2) Added support for multiple table instances (SSDT, UEFI).
+3) Added option to dump "customized" (overridden) tables (-c).
+4) Fixed a problem where some table filenames were improperly
+constructed.
+5) Improved some error messages, removed some unnecessary messages.
+
+iASL: Implemented additional support for disassembly of ACPI tables that
+contain invocations of external control methods. The -fe<file> option
+allows the import of a file that specifies the external methods along
+with the required number of arguments for each -- allowing for the
+correct disassembly of the table. This is a workaround for a limitation
+of AML code where the disassembler often cannot determine the number of
+arguments required for an external control method and generates incorrect
+ASL code. See the iASL reference for details. ACPICA BZ 1030.
+
+Debugger: Implemented a new command (paths) that displays the full
+pathnames (namepaths) and object types of all objects in the namespace.
+This is an alternative to the namespace command.
+
+Debugger: Implemented a new command (sci) that invokes the SCI dispatch
+mechanism and any installed handlers.
+
+iASL: Fixed a possible segfault for "too many parent prefixes" condition.
+This can occur if there are too many parent prefixes in a namepath (for
+example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
+
+Application OSLs: Set the return value for the PCI read functions. These
+functions simply return AE_OK, but should set the return value to zero
+also. This change implements this. ACPICA BZ 1038.
+
+Debugger: Prevent possible command line buffer overflow. Increase the
+size of a couple of the debugger line buffers, and ensure that overflow
+cannot happen. ACPICA BZ 1037.
+
+iASL: Changed to abort immediately on serious errors during the parsing
+phase. Due to the nature of ASL, there is no point in attempting to
+compile these types of errors, and they typically end up causing a
+cascade of hundreds of errors which obscure the original problem.
+
+----------------------------------------
+25 July 2013. Summary of changes for version 20130725:
+
+1) ACPICA kernel-resident subsystem:
+
+Fixed a problem with the DerefOf operator where references to FieldUnits
+and BufferFields incorrectly returned the parent object, not the actual
+value of the object. After this change, a dereference of a FieldUnit
+reference results in a read operation on the field to get the value, and
+likewise, the appropriate BufferField value is extracted from the target
+buffer.
+
+Fixed a problem where the _WAK method could cause a fault under these
+circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
+method returned no value. The problem is rarely seen because most kernels
+run ACPICA in slack mode.
+
+For the DerefOf operator, a fatal error now results if an attempt is made
+to dereference a reference (created by the Index operator) to a NULL
+package element. Provides compatibility with other ACPI implementations,
+and this behavior will be added to a future version of the ACPI
+specification.
+
+The ACPI Power Management Timer (defined in the FADT) is now optional.
+This provides compatibility with other ACPI implementations and will
+appear in the next version of the ACPI specification. If there is no PM
+Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
+zero in the FADT indicates no PM timer.
+
+Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
+allows the host to globally enable/disable all vendor strings, all
+feature strings, or both. Intended to be primarily used for debugging
+purposes only. Lv Zheng.
+
+Expose the collected _OSI data to the host via a global variable. This
+data tracks the highest level vendor ID that has been invoked by the BIOS
+so that the host (and potentially ACPICA itself) can change behaviors
+based upon the age of the BIOS.
+
+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.
+
+ Current Release:
+ Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
+ Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
+ Previous Release:
+ Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
+ Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Created the following enhancements for the -so option (create
+offset table):
+1)Add offsets for the last nameseg in each namepath for every supported
+object type
+2)Add support for Processor, Device, Thermal Zone, and Scope objects
+3)Add the actual AML opcode for the parent object of every supported
+object type
+4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
+
+Disassembler: Emit all unresolved external symbols in a single block.
+These are external references to control methods that could not be
+resolved, and thus, the disassembler had to make a guess at the number of
+arguments to parse.
+
+iASL: The argument to the -T option (create table template) is now
+optional. If not specified, the default table is a DSDT, typically the
+most common case.
+
+----------------------------------------
+26 June 2013. Summary of changes for version 20130626:
+
+1) ACPICA kernel-resident subsystem:
+
+Fixed an issue with runtime repair of the _CST object. Null or invalid
+elements were not always removed properly. Lv Zheng.
+
+Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
+FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
+the maximum number of GPEs is 1016. Use of multiple GPE block devices
+makes the system-wide number of GPEs essentially unlimited.
+
+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.
+
+ Current Release:
+ Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
+ Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
+ Previous Release:
+ Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
+ Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Portable AcpiDump: Implemented full support for the Linux and FreeBSD
+hosts. Now supports Linux, FreeBSD, and Windows.
+
+Disassembler: Added some missing types for the HEST and EINJ tables: "Set
+Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
+
+iASL/Preprocessor: Implemented full support for nested
+#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
+
+Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
+max. The original purpose of this constraint was to limit the amount of
+debug output. However, the string function in question (UtPrintString) is
+now used for the disassembler also, where 256 bytes is insufficient.
+Reported by RehabMan@GitHub.
+
+iASL/DataTables: Fixed some problems and issues with compilation of DMAR
+tables. ACPICA BZ 999. Lv Zheng.
+
+iASL: Fixed a couple of error exit issues that could result in a "Could
+not delete <file>" message during ASL compilation.
+
+AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
+the actual signatures for these tables are "FACP" and "APIC",
+respectively.
+
+AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
+tables are allowed to have multiple instances.
+
+----------------------------------------
+17 May 2013. Summary of changes for version 20130517:
+
+1) ACPICA kernel-resident subsystem:
+
+Fixed a regression introduced in version 20130328 for _INI methods. This
+change fixes a problem introduced in 20130328 where _INI methods are no
+longer executed properly because of a memory block that was not
+initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
+<tomasz.nowicki@linaro.org>.
+
+Fixed a possible problem with the new extended sleep registers in the
+ACPI
+5.0 FADT. Do not use these registers (even if populated) unless the HW-
+reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
+1020. Lv Zheng.
+
+Implemented return value repair code for _CST predefined objects: Sort
+the
+list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
+
+Implemented a debug-only option to disable loading of SSDTs from the
+RSDT/XSDT during ACPICA initialization. This can be useful for debugging
+ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
+acglobal.h - ACPICA BZ 1005. Lv Zheng.
+
+Fixed some issues in the ACPICA initialization and termination code:
+Tomasz Nowicki <tomasz.nowicki@linaro.org>
+1) Clear events initialized flag upon event component termination. ACPICA
+BZ 1013.
+2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
+3) Delete global lock pending lock during termination. ACPICA BZ 1012.
+4) Clear debug buffer global on termination to prevent possible multiple
+delete. ACPICA BZ 1010.
+
+Standardized all switch() blocks across the entire source base. After
+many
+years, different formatting for switch() had crept in. This change makes
+the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
+
+Split some files to enhance ACPICA modularity and configurability:
+1) Split buffer dump routines into utilities/utbuffer.c
+2) Split internal error message routines into utilities/uterror.c
+3) Split table print utilities into tables/tbprint.c
+4) Split iASL command-line option processing into asloptions.c
+
+Makefile enhancements:
+1) Support for all new files above.
+2) Abort make on errors from any subcomponent. Chao Guan.
+3) Add build support for Apple Mac OS X. Liang Qi.
+
+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.
+
+ Current Release:
+ Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
+ Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
+ Previous Release:
+ Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
+ Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+New utility: Implemented an easily portable version of the acpidump
+utility to extract ACPI tables from the system (or a file) in an ASCII
+hex
+dump format. The top-level code implements the various command line
+options, file I/O, and table dump routines. To port to a new host, only
+three functions need to be implemented to get tables -- since this
+functionality is OS-dependent. See the tools/acpidump/apmain.c module and
+the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
+1) The Windows version obtains the ACPI tables from the Registry.
+2) The Linux version is under development.
+3) Other hosts - If an OS-dependent module is submitted, it will be
+distributed with ACPICA.
+
+iASL: Fixed a regression for -D preprocessor option (define symbol). A
+restructuring/change to the initialization sequence caused this option to
+no longer work properly.
+
+iASL: Implemented a mechanism to disable specific warnings and remarks.
+Adds a new command line option, "-vw <messageid> as well as "#pragma
+disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
+
+iASL: Fix for too-strict package object validation. The package object
+validation for return values from the predefined names is a bit too
+strict, it does not allow names references within the package (which will
+be resolved at runtime.) These types of references cannot be validated at
+compile time. This change ignores named references within package objects
+for names that return or define static packages.
+
+Debugger: Fixed the 80-character command line limitation for the History
+command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
+
+iASL: Added control method and package support for the -so option
+(generates AML offset table for BIOS support.)
+
+iASL: issue a remark if a non-serialized method creates named objects. If
+a thread blocks within the method for any reason, and another thread
+enters the method, the method will fail because an attempt will be made
+to
+create the same (named) object twice. In this case, issue a remark that
+the method should be marked serialized. NOTE: may become a warning later.
+ACPICA BZ 909.
+
+----------------------------------------
+18 April 2013. Summary of changes for version 20130418:
+
+1) ACPICA kernel-resident subsystem:
+
+Fixed a possible buffer overrun during some rare but specific field unit
+read operations. This overrun can only happen if the DSDT version is 1 --
+meaning that all AML integers are 32 bits -- and the field length is
+between 33 and 55 bits long. During the read, an internal buffer object
+is
+created for the field unit because the field is larger than an integer
+(32
+bits). However, in this case, the buffer will be incorrectly written
+beyond the end because the buffer length is less than the internal
+minimum
+of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
+long, but a full 8 bytes will be written.
+
+Updated the Embedded Controller "orphan" _REG method support. This refers
+to _REG methods under the EC device that have no corresponding operation
+region. This is allowed by the ACPI specification. This update removes a
+dependency on the existence an ECDT table. It will execute an orphan _REG
+method as long as the operation region handler for the EC is installed at
+the EC device node and not the namespace root. Rui Zhang (original
+update), Bob Moore (update/integrate).
+
+Implemented run-time argument typechecking for all predefined ACPI names
+(_STA, _BIF, etc.) This change performs object typechecking on all
+incoming arguments for all predefined names executed via
+AcpiEvaluateObject. This ensures that ACPI-related device drivers are
+passing correct object types as well as the correct number of arguments
+(therefore identifying any issues immediately). Also, the ASL/namespace
+definition of the predefined name is checked against the ACPI
+specification for the proper argument count. Adds one new file,
+nsarguments.c
+
+Changed an exception code for the ASL UnLoad() operator. Changed the
+exception code for the case where the input DdbHandle is invalid, from
+AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
+
+Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
+global makefile. The use of this flag causes compiler errors on earlier
+versions of GCC, so it has been removed for compatibility.
+
+Miscellaneous cleanup:
+1) Removed some unused/obsolete macros
+2) Fixed a possible memory leak in the _OSI support
+3) Removed an unused variable in the predefined name support
+4) Windows OSL: remove obsolete reference to a memory list field
+
+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.
+
+ Current Release:
+ Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
+ Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
+ Previous Release:
+ Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
+ Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+AcpiExec: Added installation of a handler for the SystemCMOS address
+space. This prevents control method abort if a method accesses this
+space.
+
+AcpiExec: Added support for multiple EC devices, and now install EC
+operation region handler(s) at the actual EC device instead of the
+namespace root. This reflects the typical behavior of host operating
+systems.
+
+AcpiExec: Updated to ensure that all operation region handlers are
+installed before the _REG methods are executed. This prevents a _REG
+method from aborting if it accesses an address space has no handler.
+AcpiExec installs a handler for every possible address space.
+
+Debugger: Enhanced the "handlers" command to display non-root handlers.
+This change enhances the handlers command to display handlers associated
+with individual devices throughout the namespace, in addition to the
+currently supported display of handlers associated with the root
+namespace
+node.
+
+ASL Test Suite: Several test suite errors have been identified and
+resolved, reducing the total error count during execution. Chao Guan.
+
+----------------------------------------
+28 March 2013. Summary of changes for version 20130328:
+
+1) ACPICA kernel-resident subsystem:
+
+Fixed several possible race conditions with the internal object reference
+counting mechanism. Some of the external ACPICA interfaces update object
+reference counts without holding the interpreter or namespace lock. This
+change adds a spinlock to protect reference count updates on the internal
+ACPICA objects. Reported by and with assistance from Andriy Gapon
+(avg@FreeBSD.org).
+
+FADT support: Removed an extraneous warning for very large GPE register
+sets. This change removes a size mismatch warning if the legacy length
+field for a GPE register set is larger than the 64-bit GAS structure can
+accommodate. GPE register sets can be larger than the 255-bit width
+limitation of the GAS structure. Linn Crosetto (linn@hp.com).
+
+_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
+return from this interface. Handles a possible timeout case if
+ACPI_WAIT_FOREVER is modified by the host to be a value less than
+"forever". Jung-uk Kim.
+
+Predefined name support: Add allowed/required argument type information
+to
+the master predefined info table. This change adds the infrastructure to
+enable typechecking on incoming arguments for all predefined
+methods/objects. It does not actually contain the code that will fully
+utilize this information, this is still under development. Also condenses
+some duplicate code for the predefined names into a new module,
+utilities/utpredef.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: 95.0K Code, 25.9K Data, 120.9K Total
+ Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
+ Current Release:
+ Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
+ Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Implemented a new option to simplify the development of ACPI-
+related
+BIOS code. Adds support for a new "offset table" output file. The -so
+option will create a C table containing the AML table offsets of various
+named objects in the namespace so that BIOS code can modify them easily
+at
+boot time. This can simplify BIOS runtime code by eliminating expensive
+searches for "magic values", enhancing boot times and adding greater
+reliability. With assistance from Lee Hamel.
+
+iASL: Allow additional predefined names to return zero-length packages.
+Now, all predefined names that are defined by the ACPI specification to
+return a "variable-length package of packages" are allowed to return a
+zero length top-level package. This allows the BIOS to tell the host that
+the requested feature is not supported, and supports existing BIOS/ASL
+code and practices.
+
+iASL: Changed the "result not used" warning to an error. This is the case
+where an ASL operator is effectively a NOOP because the result of the
+operation is not stored anywhere. For example:
+ Add (4, Local0)
+There is no target (missing 3rd argument), nor is the function return
+value used. This is potentially a very serious problem -- since the code
+was probably intended to do something, but for whatever reason, the value
+was not stored. Therefore, this issue has been upgraded from a warning to
+an error.
+
+AcpiHelp: Added allowable/required argument types to the predefined names
+info display. This feature utilizes the recent update to the predefined
+names table (above).
+
+----------------------------------------
+14 February 2013. Summary of changes for version 20130214:
+
+1) ACPICA Kernel-resident Subsystem:
+
+Fixed a possible regression on some hosts: Reinstated the safe return
+macros (return_ACPI_STATUS, etc.) that ensure that the argument is
+evaluated only once. Although these macros are not needed for the ACPICA
+code itself, they are often used by ACPI-related host device drivers
+where
+the safe feature may be necessary.
+
+Fixed several issues related to the ACPI 5.0 reduced hardware support
+(SOC): Now ensure that if the platform declares itself as hardware-
+reduced
+via the FADT, the following functions become NOOPs (and always return
+AE_OK) because ACPI is always enabled by definition on these machines:
+ AcpiEnable
+ AcpiDisable
+ AcpiHwGetMode
+ AcpiHwSetMode
+
+Dynamic Object Repair: Implemented additional runtime repairs for
+predefined name return values. Both of these repairs can simplify code in
+the related device drivers that invoke these methods:
+1) For the _STR and _MLS names, automatically repair/convert an ASCII
+string to a Unicode buffer.
+2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
+a
+lone end tag descriptor in the following cases: A Return(0) was executed,
+a null buffer was returned, or no object at all was returned (non-slack
+mode only). Adds a new file, nsconvert.c
+ACPICA BZ 998. Bob Moore, Lv Zheng.
+
+Resource Manager: Added additional code to prevent possible infinite
+loops
+while traversing corrupted or ill-formed resource template buffers. Check
+for zero-length resource descriptors in all code that loops through
+resource templates (the length field is used to index through the
+template). This change also hardens the external AcpiWalkResources and
+AcpiWalkResourceBuffer interfaces.
+
+Local Cache Manager: Enhanced the main data structure to eliminate an
+unnecessary mechanism to access the next object in the list. Actually
+provides a small performance enhancement for hosts that use the local
+ACPICA cache manager. Jung-uk Kim.
+
+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: 94.5K Code, 25.4K Data, 119.9K Total
+ Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
+ Current Release:
+ Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
+ Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL/Disassembler: Fixed several issues with the definition of the ACPI
+5.0 RASF table (RAS Feature Table). This change incorporates late changes
+that were made to the ACPI 5.0 specification.
+
+iASL/Disassembler: Added full support for the following new ACPI tables:
+ 1) The MTMR table (MID Timer Table)
+ 2) The VRTC table (Virtual Real Time Clock Table).
+Includes header file, disassembler, table compiler, and template support
+for both tables.
+
+iASL: Implemented compile-time validation of package objects returned by
+predefined names. This new feature validates static package objects
+returned by the various predefined names defined to return packages. Both
+object types and package lengths are validated, for both parent packages
+and sub-packages, if any. The code is similar in structure and behavior
+to
+the runtime repair mechanism within the AML interpreter and uses the
+existing predefined name information table. Adds a new file, aslprepkg.c.
+ACPICA BZ 938.
+
+iASL: Implemented auto-detection of binary ACPI tables for disassembly.
+This feature detects a binary file with a valid ACPI table header and
+invokes the disassembler automatically. Eliminates the need to
+specifically invoke the disassembler with the -d option. ACPICA BZ 862.
+
+iASL/Disassembler: Added several warnings for the case where there are
+unresolved control methods during the disassembly. This can potentially
+cause errors when the output file is compiled, because the disassembler
+assumes zero method arguments in these cases (it cannot determine the
+actual number of arguments without resolution/definition of the method).
+
+Debugger: Added support to display all resources with a single command.
+Invocation of the resources command with no arguments will now display
+all
+resources within the current namespace.
+
+AcpiHelp: Added descriptive text for each ACPICA exception code displayed
+via the -e option.
+
+----------------------------------------
+17 January 2013. Summary of changes for version 20130117:
+
+1) ACPICA Kernel-resident Subsystem:
+
+Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
+return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
+objects to return a package containing one integer, most BIOS code
+returns
+two integers and the previous code reflects that. However, we also need
+to
+support BIOS code that actually implements to the ACPI spec, and this
+change reflects this.
+
+Fixed two issues with the ACPI_DEBUG_PRINT macros:
+1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
+C compilers that require this support.
+2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
+ACPI_DEBUG is already used by many of the various hosts.
+
+Updated all ACPICA copyrights and signons to 2013. Added the 2013
+copyright to all module headers and signons, including the standard Linux
+header. This affects virtually every file in the ACPICA core subsystem,
+iASL compiler, all ACPICA utilities, and the test suites.
+
+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: 94.5K Code, 25.5K Data, 120.0K Total
+ Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
+ Current Release:
+ Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
+ Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
+prevent a possible fault on some hosts. Some C libraries modify the arg
+pointer parameter to vfprintf making it difficult to call it twice in the
+AcpiOsVprintf function. Use a local buffer to workaround this issue. This
+does not affect the Windows OSL since the Win C library does not modify
+the arg pointer. Chao Guan, Bob Moore.
+
+iASL: Fixed a possible infinite loop when the maximum error count is
+reached. If an output file other than the .AML file is specified (such as
+a listing file), and the maximum number of errors is reached, do not
+attempt to flush data to the output file(s) as the compiler is aborting.
+This can cause an infinite loop as the max error count code essentially
+keeps calling itself.
+
+iASL/Disassembler: Added an option (-in) to ignore NOOP
+opcodes/operators.
+Implemented for both the compiler and the disassembler. Often, the NOOP
+opcode is used as padding for packages that are changed dynamically by
+the
+BIOS. When disassembled and recompiled, these NOOPs will cause syntax
+errors. This option causes the disassembler to ignore all NOOP opcodes
+(0xA3), and it also causes the compiler to ignore all ASL source code
+NOOP
+statements as well.
+
+Debugger: Enhanced the Sleep command to execute all sleep states. This
+change allows Sleep to be invoked with no arguments and causes the
+debugger to execute all of the sleep states, 0-5, automatically.
+
+----------------------------------------
+20 December 2012. Summary of changes for version 20121220:
+
+1) ACPICA Kernel-resident Subsystem:
+
+Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
+alternate entry point for AcpiWalkResources and improves the usability of
+the resource manager by accepting as input a buffer containing the output
+of either a _CRS, _PRS, or _AEI method. The key functionality is that the
+input buffer is not deleted by this interface so that it can be used by
+the host later. See the ACPICA reference for details.
+
+Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
+(DSDT version < 2). The constant will be truncated and this warning
+reflects that behavior.
+
+Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
+ExtendedInterrupt, and GpioInt descriptors. This change adds support to
+both get and set the new wake bit in these descriptors, separately from
+the existing share bit. Reported by Aaron Lu.
+
+Interpreter: Fix Store() when an implicit conversion is not possible. For
+example, in the cases such as a store of a string to an existing package
+object, implement the store as a CopyObject(). This is a small departure
+from the ACPI specification which states that the control method should
+be
+aborted in this case. However, the ASLTS suite depends on this behavior.
+
+Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
+macros: check if debug output is currently enabled as soon as possible to
+minimize performance impact if debug is in fact not enabled.
+
+Source code restructuring: Cleanup to improve modularity. The following
+new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
+psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
+Associated makefiles and project files have been updated.
+
+Changed an exception code for LoadTable operator. For the case where one
+of the input strings is too long, change the returned exception code from
+AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
+
+Fixed a possible memory leak in dispatcher error path. On error, delete
+the mutex object created during method mutex creation. Reported by
+tim.gardner@canonical.com.
+
+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: 94.3K Code, 25.3K Data, 119.6K Total
+ Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
+ Current Release:
+ Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
+ Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Disallow a method call as argument to the ObjectType ASL operator.
+This change tracks an errata to the ACPI 5.0 document. The AML grammar
+will not allow the interpreter to differentiate between a method and a
+method invocation when these are used as an argument to the ObjectType
+operator. The ACPI specification change is to disallow a method
+invocation
+(UserTerm) for the ObjectType operator.
+
+Finish support for the TPM2 and CSRT tables in the headers, table
+compiler, and disassembler.
+
+Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
+always expires immediately if the semaphore is not available. The
+original
+code was using a relative-time timeout, but sem_timedwait requires the
+use
+of an absolute time.
+
+iASL: Added a remark if the Timer() operator is used within a 32-bit
+table. This operator returns a 64-bit time value that will be truncated
+within a 32-bit table.
+
+iASL Source code restructuring: Cleanup to improve modularity. The
+following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
+aslmethod.c, and aslfileio.c. Associated makefiles and project files have
+been updated.
+
+
+----------------------------------------
+14 November 2012. Summary of changes for version 20121114:
+
+1) ACPICA Kernel-resident Subsystem:
+
+Implemented a performance enhancement for ACPI/AML Package objects. This
+change greatly increases the performance of Package objects within the
+interpreter. It changes the processing of reference counts for packages
+by
+optimizing for the most common case where the package sub-objects are
+either Integers, Strings, or Buffers. Increases the overall performance
+of
+the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
+2X.)
+Chao Guan. ACPICA BZ 943.
+
+Implemented and deployed common macros to extract flag bits from resource
+descriptors. Improves readability and maintainability of the code. Fixes
+a
+problem with the UART serial bus descriptor for the number of data bits
+flags (was incorrectly 2 bits, should be 3).
+
+Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
+of the macros and changed the SETx macros to the style of (destination,
+source). Also added ACPI_CASTx companion macros. Lv Zheng.
+
+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: 93.9K Code, 25.2K Data, 119.1K Total
+ Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
+ Current Release:
+ Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
+ Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
+adds the ShareAndWake and ExclusiveAndWake flags which were added to the
+Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
+
+Disassembler: Fixed a problem with external declaration generation. Fixes
+a problem where an incorrect pathname could be generated for an external
+declaration if the original reference to the object includes leading
+carats (^). ACPICA BZ 984.
+
+Debugger: Completed a major update for the Disassemble<method> command.
+This command was out-of-date and did not properly disassemble control
+methods that had any reasonable complexity. This fix brings the command
+up
+to the same level as the rest of the disassembler. Adds one new file,
+dmdeferred.c, which is existing code that is now common with the main
+disassembler and the debugger disassemble command. ACPICA MZ 978.
+
+iASL: Moved the parser entry prototype to avoid a duplicate declaration.
+Newer versions of Bison emit this prototype, so moved the prototype out
+of
+the iASL header to where it is actually used in order to avoid a
+duplicate
+declaration.
+
+iASL/Tools: Standardized use of the stream I/O functions:
+ 1) Ensure check for I/O error after every fopen/fread/fwrite
+ 2) Ensure proper order of size/count arguments for fread/fwrite
+ 3) Use test of (Actual != Requested) after all fwrite, and most fread
+ 4) Standardize I/O error messages
+Improves reliability and maintainability of the code. Bob Moore, Lv
+Zheng.
+ACPICA BZ 981.
+
+Disassembler: Prevent duplicate External() statements. During generation
+of external statements, detect similar pathnames that are actually
+duplicates such as these:
+ External (\ABCD)
+ External (ABCD)
+Remove all leading '\' characters from pathnames during the external
+statement generation so that duplicates will be detected and tossed.
+ACPICA BZ 985.
+
+Tools: Replace low-level I/O with stream I/O functions. Replace
+open/read/write/close with the stream I/O equivalents
+fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
+Moore.
+
+AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
+name header so that AcpiXtract recognizes the output file/table.
+
+iASL: Remove obsolete -2 option flag. Originally intended to force the
+compiler/disassembler into an ACPI 2.0 mode, this was never implemented
+and the entire concept is now obsolete.
+
+----------------------------------------
+18 October 2012. Summary of changes for version 20121018:
+
+
+1) ACPICA Kernel-resident Subsystem:
+
+Updated support for the ACPI 5.0 MPST table. Fixes some problems
+introduced by late changes to the table as it was added to the ACPI 5.0
+specification. Includes header, disassembler, and data table compiler
+support as well as a new version of the MPST template.
+
+AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
+5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
+methods: _HID, _CID, and _UID.
+
+Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
+ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
+name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
+names for their various drivers. Affects the AcpiGetObjectInfo external
+interface, and other internal interfaces as well.
+
+Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
+This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
+on machines that support non-aligned transfers. Optimizes for this case
+rather than using a strncpy. With assistance from Zheng Lv.
+
+Resource Manager: Small fix for buffer size calculation. Fixed a one byte
+error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
+
+Added a new debug print message for AML mutex objects that are force-
+released. At control method termination, any currently acquired mutex
+objects are force-released. Adds a new debug-only message for each one
+that is released.
+
+Audited/updated all ACPICA return macros and the function debug depth
+counter: 1) Ensure that all functions that use the various TRACE macros
+also use the appropriate ACPICA return macros. 2) Ensure that all normal
+return statements surround the return expression (value) with parens to
+ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
+Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
+
+Global source code changes/maintenance: All extra lines at the start and
+end of each source file have been removed for consistency. Also, within
+comments, all new sentences start with a single space instead of a double
+space, again for consistency across the code base.
+
+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: 93.7K Code, 25.3K Data, 119.0K Total
+ Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
+ Current Release:
+ Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
+ Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+AcpiExec: Improved the algorithm used for memory leak/corruption
+detection. Added some intelligence to the code that maintains the global
+list of allocated memory. The list is now ordered by allocated memory
+address, significantly improving performance. When running AcpiExec on
+the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
+on the platform and/or the environment. Note, this performance
+enhancement affects the AcpiExec utility only, not the kernel-resident
+ACPICA code.
+
+Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
+the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
+incorrect table offset reported for invalid opcodes. Report the original
+32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
+
+Disassembler: Enhanced the -vt option to emit the binary table data in
+hex format to assist with debugging.
+
+Fixed a potential filename buffer overflow in osunixdir.c. Increased the
+size of file structure. Colin Ian King.
+
+----------------------------------------
+13 September 2012. Summary of changes for version 20120913:
+
+
+1) ACPICA Kernel-resident Subsystem:
+
+ACPI 5.0: Added two new notify types for the Hardware Error Notification
+Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
+and
+MCE(6).
+
+Table Manager: Merged/removed duplicate code in the root table resize
+functions. One function is external, the other is internal. Lv Zheng,
+ACPICA
+BZ 846.
+
+Makefiles: Completely removed the obsolete "Linux" makefiles under
+acpica/generate/linux. These makefiles are obsolete and have been
+replaced
+by
+the generic unix makefiles under acpica/generate/unix.
+
+Makefiles: Ensure that binary files always copied properly. Minor rule
+change
+to ensure that the final binary output files are always copied up to the
+appropriate binary directory (bin32 or bin64.)
+
+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: 93.8K Code, 25.3K Data, 119.1K Total
+ Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
+ Current Release:
+ Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
+ Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Disassembler: Fixed a possible fault during the disassembly of resource
+descriptors when a second parse is required because of the invocation of
+external control methods within the table. With assistance from
+adq@lidskialf.net. ACPICA BZ 976.
+
+iASL: Fixed a namepath optimization problem. An error can occur if the
+parse
+node that contains the namepath to be optimized does not have a parent
+node
+that is a named object. This change fixes the problem.
+
+iASL: Fixed a regression where the AML file is not deleted on errors. The
+AML
+output file should be deleted if there are any errors during the
+compiler.
+The
+only exception is if the -f (force output) option is used. ACPICA BZ 974.
+
+iASL: Added a feature to automatically increase internal line buffer
+sizes.
+Via realloc(), automatically increase the internal line buffer sizes as
+necessary to support very long source code lines. The current version of
+the
+preprocessor requires a buffer long enough to contain full source code
+lines.
+This change increases the line buffer(s) if the input lines go beyond the
+current buffer size. This eliminates errors that occurred when a source
+code
+line was longer than the buffer.
+
+iASL: Fixed a problem with constant folding in method declarations. The
+SyncLevel term is a ByteConstExpr, and incorrect code would be generated
+if a
+Type3 opcode was used.
+
+Debugger: Improved command help support. For incorrect argument count,
+display
+full help for the command. For help command itself, allow an argument to
+specify a command.
+
+Test Suites: Several bug fixes for the ASLTS suite reduces the number of
+errors during execution of the suite. Guan Chao.
+
+----------------------------------------
+16 August 2012. Summary of changes for version 20120816:
+
+
+1) ACPICA Kernel-resident Subsystem:
+
+Removed all use of the deprecated _GTS and _BFS predefined methods. The
+_GTS
+(Going To Sleep) and _BFS (Back From Sleep) methods are essentially
+deprecated and will probably be removed from the ACPI specification.
+Windows
+does not invoke them, and reportedly never will. The final nail in the
+coffin
+is that the ACPI specification states that these methods must be run with
+interrupts off, which is not going to happen in a kernel interpreter.
+Note:
+Linux has removed all use of the methods also. It was discovered that
+invoking these functions caused failures on some machines, probably
+because
+they were never tested since Windows does not call them. Affects two
+external
+interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
+ACPICA BZ 969.
+
+Implemented support for complex bit-packed buffers returned from the _PLD
+(Physical Location of Device) predefined method. Adds a new external
+interface, AcpiDecodePldBuffer that parses the buffer into a more usable
+C
+structure. Note: C Bitfields cannot be used for this type of predefined
+structure since the memory layout of individual bitfields is not defined
+by
+the C language. In addition, there are endian concerns where a compiler
+will
+change the bitfield ordering based on the machine type. The new ACPICA
+interface eliminates these issues, and should be called after _PLD is
+executed. ACPICA BZ 954.
+
+Implemented a change to allow a scope change to root (via "Scope (\)")
+during
+execution of module-level ASL code (code that is executed at table load
+time.) Lin Ming.
+
+Added the Windows8/Server2012 string for the _OSI method. This change
+adds
+a
+new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
+2012.
+
+Added header support for the new ACPI tables DBG2 (Debug Port Table Type
+2)
+and CSRT (Core System Resource Table).
+
+Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
+names. This simplifies access to the buffers returned by these predefined
+names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
+
+GPE support: Removed an extraneous parameter from the various low-level
+internal GPE functions. Tang Feng.
+
+Removed the linux makefiles from the unix packages. The generate/linux
+makefiles are obsolete and have been removed from the unix tarball
+release
+packages. The replacement makefiles are under generate/unix, and there is
+a
+top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
+
+Updates for Unix makefiles:
+1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
+2) Update linker flags (move to end of command line) for AcpiExec
+utility.
+Guan Chao.
+
+Split ACPICA initialization functions to new file, utxfinit.c. Split from
+utxface.c to improve modularity and reduce file size.
+
+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: 93.5K Code, 25.3K Data, 118.8K Total
+ Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
+ Current Release:
+ Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
+ Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Fixed a problem with constant folding for fixed-length constant
+expressions. The constant-folding code was not being invoked for constant
+expressions that allow the use of type 3/4/5 opcodes to generate
+constants
+for expressions such as ByteConstExpr, WordConstExpr, etc. This could
+result
+in the generation of invalid AML bytecode. ACPICA BZ 970.
+
+iASL: Fixed a generation issue on newer versions of Bison. Newer versions
+apparently automatically emit some of the necessary externals. This
+change
+handles these versions in order to eliminate generation warnings.
+
+Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
+
+Disassembler: Add support to decode _PLD buffers. The decoded buffer
+appears
+within comments in the output file.
+
+Debugger: Fixed a regression with the "Threads" command where
+AE_BAD_PARAMETER was always returned.
+
+----------------------------------------
+11 July 2012. Summary of changes for version 20120711:
+
+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:
+
+
+1) ACPICA Kernel-resident Subsystem:
+
+Implemented support to expand the "implicit notify" feature to allow
+multiple
+devices to be notified by a single GPE. This feature automatically
+generates a
+runtime device notification in the absence of a BIOS-provided GPE control
+method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
+notify is
+provided by ACPICA for Windows compatibility, and is a workaround for
+BIOS
+AML
+code errors. See the description of the AcpiSetupGpeForWake interface in
+the
+APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
+
+Changed some comments and internal function names to simplify and ensure
+correctness of the Linux code translation. No functional changes.
+
+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: 93.0K Code, 25.1K Data, 118.1K Total
+ Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
+ Current Release:
+ Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
+ Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Disassembler: Added support to emit short, commented descriptions for the
+ACPI
+predefined names in order to improve the readability of the disassembled
+output. ACPICA BZ 959. Changes include:
+ 1) Emit descriptions for all standard predefined names (_INI, _STA,
+_PRW,
+etc.)
+ 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
+ 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
+etc.)
+
+AcpiSrc: Fixed several long-standing Linux code translation issues.
+Argument
+descriptions in function headers are now translated properly to lower
+case
+and
+underscores. ACPICA BZ 961. Also fixes translation problems such as
+these:
+(old -> new)
+ i_aSL -> iASL
+ 00-7_f -> 00-7F
+ 16_k -> 16K
+ local_fADT -> local_FADT
+ execute_oSI -> execute_OSI
+
+iASL: Fixed a problem where null bytes were inadvertently emitted into
+some
+listing files.
+
+iASL: Added the existing debug options to the standard help screen. There
+are
+no longer two different help screens. ACPICA BZ 957.
+
+AcpiHelp: Fixed some typos in the various predefined name descriptions.
+Also
+expand some of the descriptions where appropriate.
+
+iASL: Fixed the -ot option (display compile times/statistics). Was not
+working
+properly for standard output; only worked for the debug file case.
+
+----------------------------------------
+18 May 2012. Summary of changes for version 20120518:
+
+
+1) ACPICA Core Subsystem:
+
+Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
+defined
+to block until asynchronous events such as notifies and GPEs have
+completed.
+Within ACPICA, it is only called before a notify or GPE handler is
+removed/uninstalled. It also may be useful for the host OS within related
+drivers such as the Embedded Controller driver. See the ACPICA reference
+for
+additional information. ACPICA BZ 868.
+
+ACPI Tables: Added a new error message for a possible overflow failure
+during
+the conversion of FADT 32-bit legacy register addresses to internal
+common
+64-
+bit GAS structure representation. The GAS has a one-byte "bit length"
+field,
+thus limiting the register length to 255 bits. ACPICA BZ 953.
+
+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: 92.9K Code, 25.0K Data, 117.9K Total
+ Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
+ Current Release:
+ Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
+ Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
+macro.
+This keyword was added late in the ACPI 5.0 release cycle and was not
+implemented until now.
+
+Disassembler: Added support for Operation Region externals. Adds missing
+support for operation regions that are defined in another table, and
+referenced locally via a Field or BankField ASL operator. Now generates
+the
+correct External statement.
+
+Disassembler: Several additional fixes for the External() statement
+generation
+related to some ASL operators. Also, order the External() statements
+alphabetically in the disassembler output. Fixes the External()
+generation
+for
+the Create* field, Alias, and Scope operators:
+ 1) Create* buffer field operators - fix type mismatch warning on
+disassembly
+ 2) Alias - implement missing External support
+ 3) Scope - fix to make sure all necessary externals are emitted.
+
+iASL: Improved pathname support. For include files, merge the prefix
+pathname
+with the file pathname and eliminate unnecessary components. Convert
+backslashes in all pathnames to forward slashes, for readability. Include
+file
+pathname changes affect both #include and Include() type operators.
+
+iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
+end
+of a valid line by inserting a newline and then returning the EOF during
+the
+next call to GetNextLine. Prevents the line from being ignored due to EOF
+condition.
+
+iASL: Implemented some changes to enhance the IDE support (-vi option.)
+Error
+and Warning messages are now correctly recognized for both the source
+code
+browser and the global error and warning counts.
+
+----------------------------------------
+20 April 2012. Summary of changes for version 20120420:
+
+
+1) ACPICA Core Subsystem:
+
+Implemented support for multiple notify handlers. This change adds
+support
+to
+allow multiple system and device notify handlers on Device, Thermal Zone,
+and
+Processor objects. This can simplify the host OS notification
+implementation.
+Also re-worked and restructured the entire notify support code to
+simplify
+handler installation, handler removal, notify event queuing, and notify
+dispatch to handler(s). Note: there can still only be two global notify
+handlers - one for system notifies and one for device notifies. There are
+no
+changes to the existing handler install/remove interfaces. Lin Ming, Bob
+Moore, Rafael Wysocki.
+
+Fixed a regression in the package repair code where the object reference
+count was calculated incorrectly. Regression was introduced in the commit
+"Support to add Package wrappers".
+
+Fixed a couple possible memory leaks in the AML parser, in the error
+recovery
+path. Jesper Juhl, Lin Ming.
+
+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: 92.9K Code, 25.0K Data, 117.9K Total
+ Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
+ Current Release:
+ Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
+ Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Fixed a problem with the resource descriptor support where the
+length
+of the StartDependentFn and StartDependentFnNoPrio descriptors were not
+included in cumulative descriptor offset, resulting in incorrect values
+for
+resource tags within resource descriptors appearing after a
+StartDependent*
+descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
+
+iASL and Preprocessor: Implemented full support for the #line directive
+to
+correctly track original source file line numbers through the .i
+preprocessor
+output file - for error and warning messages.
+
+iASL: Expand the allowable byte constants for address space IDs.
+Previously,
+the allowable range was 0x80-0xFF (user-defined spaces), now the range is
+0x0A-0xFF to allow for custom and new IDs without changing the compiler.
+
+iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
+
+iASL: Add option to completely disable the preprocessor (-Pn).
+
+iASL: Now emit all error/warning messages to standard error (stderr) by
+default (instead of the previous stdout).
+
+ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
+Update
+for resource descriptor offset fix above. Update/cleanup error output
+routines. Enable and send iASL errors/warnings to an error logfile
+(error.txt). Send all other iASL output to a logfile (compiler.txt).
+Fixed
+several extraneous "unrecognized operator" messages.
+
+----------------------------------------
+20 March 2012. Summary of changes for version 20120320:
+
+
+1) ACPICA Core Subsystem:
+
+Enhanced the sleep/wake interfaces to optionally execute the _GTS method
+(Going To Sleep) and the _BFS method (Back From Sleep). Windows
+apparently
+does not execute these methods, and therefore these methods are often
+untested. It has been seen on some systems where the execution of these
+methods causes errors and also prevents the machine from entering S5. It
+is
+therefore suggested that host operating systems do not execute these
+methods
+by default. In the future, perhaps these methods can be optionally
+executed
+based on the age of the system and/or what is the newest version of
+Windows
+that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
+and
+AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
+Ming.
+
+Fixed a problem where the length of the local/common FADT was set too
+early.
+The local FADT table length cannot be set to the common length until the
+original length has been examined. There is code that checks the table
+length
+and sets various fields appropriately. This can affect older machines
+with
+early FADT versions. For example, this can cause inadvertent writes to
+the
+CST_CNT register. Julian Anastasov.
+
+Fixed a mapping issue related to a physical table override. Use the
+deferred
+mapping mechanism for tables loaded via the physical override OSL
+interface.
+This allows for early mapping before the virtual memory manager is
+available.
+Thomas Renninger, Bob Moore.
+
+Enhanced the automatic return-object repair code: Repair a common problem
+with
+predefined methods that are defined to return a variable-length Package
+of
+sub-objects. If there is only one sub-object, some BIOS ASL code
+mistakenly
+simply returns the single object instead of a Package with one sub-
+object.
+This new support will repair this error by wrapping a Package object
+around
+the original object, creating the correct and expected Package with one
+sub-
+object. Names that can be repaired in this manner include: _ALR, _CSD,
+_HPX,
+_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
+939.
+
+Changed the exception code returned for invalid ACPI paths passed as
+parameters to external interfaces such as AcpiEvaluateObject. Was
+AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
+
+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: 93.0K Code, 25.0K Data, 118.0K Total
+ Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
+ Current Release:
+ Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
+ Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Added the infrastructure and initial implementation of a integrated
+C-
+like preprocessor. This will simplify BIOS development process by
+eliminating
+the need for a separate preprocessing step during builds. On Windows, it
+also
+eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
+features including full #define() macro support are still under
+development.
+These preprocessor directives are supported:
+ #define
+ #elif
+ #else
+ #endif
+ #error
+ #if
+ #ifdef
+ #ifndef
+ #include
+ #pragma message
+ #undef
+ #warning
+In addition, these new command line options are supported:
+ -D <symbol> Define symbol for preprocessor use
+ -li Create preprocessed output file (*.i)
+ -P Preprocess only and create preprocessor output file (*.i)
+
+Table Compiler: Fixed a problem where the equals operator within an
+expression
+did not work properly.
+
+Updated iASL to use the current versions of Bison/Flex. Updated the
+Windows
+project file to invoke these tools from the standard location. ACPICA BZ
+904.
+Versions supported:
+ Flex for Windows: V2.5.4
+ Bison for Windows: V2.4.1
+
+----------------------------------------
+15 February 2012. Summary of changes for version 20120215:
+
+
+1) ACPICA Core Subsystem:
+
+There have been some major changes to the sleep/wake support code, as
+described below (a - e).
+
+a) The AcpiLeaveSleepState has been split into two interfaces, similar to
+AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
+AcpiLeaveSleepStatePrep. This allows the host to perform actions between
+the
+time the _BFS method is called and the _WAK method is called. NOTE: all
+hosts
+must update their wake/resume code or else sleep/wake will not work
+properly.
+Rafael Wysocki.
+
+b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
+_WAK
+method. Some machines require that the GPEs are enabled before the _WAK
+method
+is executed. Thomas Renninger.
+
+c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
+bit.
+Some BIOS code assumes that WAK_STS will be cleared on resume and use it
+to
+determine whether the system is rebooting or resuming. Matthew Garrett.
+
+d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
+Sleep) to
+match the ACPI specification requirement. Rafael Wysocki.
+
+e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
+registers within the V5 FADT. This support adds two new files:
+hardware/hwesleep.c implements the support for the new registers. Moved
+all
+sleep/wake external interfaces to hardware/hwxfsleep.c.
+
+
+Added a new OSL interface for ACPI table overrides,
+AcpiOsPhysicalTableOverride. This interface allows the host to override a
+table via a physical address, instead of the logical address required by
+AcpiOsTableOverride. This simplifies the host implementation. Initial
+implementation by Thomas Renninger. The ACPICA implementation creates a
+single
+shared function for table overrides that attempts both a logical and a
+physical override.
+
+Expanded the OSL memory read/write interfaces to 64-bit data
+(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
+transfer support for GAS register structures passed to AcpiRead and
+AcpiWrite.
+
+Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
+custom
+build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
+model.
+See the ACPICA reference for details. ACPICA BZ 942. This option removes
+about
+10% of the code and 5% of the static data, and the following hardware
+ACPI
+features become unavailable:
+ PM Event and Control registers
+ SCI interrupt (and handler)
+ Fixed Events
+ General Purpose Events (GPEs)
+ Global Lock
+ ACPI PM timer
+ FACS table (Waking vectors and Global Lock)
+
+Updated the unix tarball directory structure to match the ACPICA git
+source
+tree. This ensures that the generic unix makefiles work properly (in
+generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
+867.
+
+Updated the return value of the _REV predefined method to integer value 5
+to
+reflect ACPI 5.0 support.
+
+Moved the external ACPI PM timer interface prototypes to the public
+acpixf.h
+file where they belong.
+
+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: 92.8K Code, 24.9K Data, 117.7K Total
+ Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
+ Current Release:
+ Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
+ Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
+descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
+incorrectly displayed.
+
+AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
+specification.
+
+----------------------------------------
+11 January 2012. Summary of changes for version 20120111:
+
+
+1) ACPICA Core Subsystem:
+
+Implemented a new mechanism to allow host device drivers to check for
+address
+range conflicts with ACPI Operation Regions. Both SystemMemory and
+SystemIO
+address spaces are supported. A new external interface,
+AcpiCheckAddressRange,
+allows drivers to check an address range against the ACPI namespace. See
+the
+ACPICA reference for additional details. Adds one new file,
+utilities/utaddress.c. Lin Ming, Bob Moore.
+
+Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
+Control
+and
+Status registers, update the ACPI 5.0 flags, and update internal data
+structures to handle an FADT larger than 256 bytes. The size of the ACPI
+5.0
+FADT is 268 bytes.
+
+Updated all ACPICA copyrights and signons to 2012. Added the 2012
+copyright to
+all module headers and signons, including the standard Linux header. This
+affects virtually every file in the ACPICA core subsystem, iASL compiler,
+and
+all ACPICA utilities.
+
+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: 92.3K Code, 24.9K Data, 117.2K Total
+ Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
+ Current Release:
+ Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
+ Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
+
+
+2) iASL Compiler/Disassembler and Tools:
+
+Disassembler: fixed a problem with the automatic resource tag generation
+support. Fixes a problem where the resource tags are inadvertently not
+constructed if the table being disassembled contains external references
+to
+control methods. Moved the actual construction of the tags to after the
+final
+namespace is constructed (after 2nd parse is invoked due to external
+control
+method references.) ACPICA BZ 941.
+
+Table Compiler: Make all "generic" operators caseless. These are the
+operators
+like UINT8, String, etc. Making these caseless improves ease-of-use.
+ACPICA BZ
+934.
+
+----------------------------------------
+23 November 2011. Summary of changes for version 20111123:
+
+0) ACPI 5.0 Support:
+
+This release contains full support for the ACPI 5.0 specification, as
+summarized below.
+
+Reduced Hardware Support:
+-------------------------
+
+This support allows for ACPI systems without the usual ACPI hardware.
+This
+support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
+will
+not attempt to initialize or use any of the usual ACPI hardware. Note,
+when
+this flag is set, all of the following ACPI hardware is assumed to be not
+present and is not initialized or accessed:
+
+ General Purpose Events (GPEs)
+ Fixed Events (PM1a/PM1b and PM Control)
+ Power Management Timer and Console Buttons (power/sleep)
+ Real-time Clock Alarm
+ Global Lock
+ System Control Interrupt (SCI)
+ The FACS is assumed to be non-existent
+
+ACPI Tables:
+------------
+
+All new tables and updates to existing tables are fully supported in the
+ACPICA headers (for use by device drivers), the disassembler, and the
+iASL
+Data Table Compiler. ACPI 5.0 defines these new tables:
+
+ BGRT /* Boot Graphics Resource Table */
+ DRTM /* Dynamic Root of Trust for Measurement table */
+ FPDT /* Firmware Performance Data Table */
+ GTDT /* Generic Timer Description Table */
+ MPST /* Memory Power State Table */
+ PCCT /* Platform Communications Channel Table */
+ PMTT /* Platform Memory Topology Table */
+ RASF /* RAS Feature table */
+
+Operation Regions/SpaceIDs:
+---------------------------
+
+All new operation regions are fully supported by the iASL compiler, the
+disassembler, and the ACPICA runtime code (for dispatch to region
+handlers.)
+The new operation region Space IDs are:
+
+ GeneralPurposeIo
+ GenericSerialBus
+
+Resource Descriptors:
+---------------------
+
+All new ASL resource descriptors are fully supported by the iASL
+compiler,
+the
+ASL/AML disassembler, and the ACPICA runtime Resource Manager code
+(including
+all new predefined resource tags). New descriptors are:
+
+ FixedDma
+ GpioIo
+ GpioInt
+ I2cSerialBus
+ SpiSerialBus
+ UartSerialBus
+
+ASL/AML Operators, New and Modified:
+------------------------------------
+
+One new operator is added, the Connection operator, which is used to
+associate
+a GeneralPurposeIo or GenericSerialBus resource descriptor with
+individual
+field objects within an operation region. Several new protocols are
+associated
+with the AccessAs operator. All are fully supported by the iASL compiler,
+disassembler, and runtime ACPICA AML interpreter:
+
+ Connection // Declare Field Connection
+attributes
+ AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
+ AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
+Protocol
+ AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
+ RawDataBuffer // Data type for Vendor Data
+fields
+
+Predefined ASL/AML Objects:
+---------------------------
+
+All new predefined objects/control-methods are supported by the iASL
+compiler
+and the ACPICA runtime validation/repair (arguments and return values.)
+New
+predefined names include the following:
+
+Standard Predefined Names (Objects or Control Methods):
+ _AEI, _CLS, _CPC, _CWS, _DEP,
+ _DLM, _EVT, _GCP, _CRT, _GWS,
+ _HRV, _PRE, _PSE, _SRT, _SUB.
+
+Resource Tags (Names used to access individual fields within resource
+descriptors):
+ _DBT, _DPL, _DRS, _END, _FLC,
+ _IOR, _LIN, _MOD, _PAR, _PHA,
+ _PIN, _PPI, _POL, _RXL, _SLV,
+ _SPE, _STB, _TXL, _VEN.
+
+ACPICA External Interfaces:
+---------------------------
+
+Several new interfaces have been defined for use by ACPI-related device
+drivers and other host OS services:
+
+AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
+to
+acquire and release AML mutexes that are defined in the DSDT/SSDT tables
+provided by the BIOS. They are intended to be used in conjunction with
+the
+ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
+mutual exclusion with the AML code/interpreter.
+
+AcpiGetEventResources: Returns the (formatted) resource descriptors as
+defined
+by the ACPI 5.0 _AEI object (ACPI Event Information). This object
+provides
+resource descriptors associated with hardware-reduced platform events,
+similar
+to the AcpiGetCurrentResources interface.
+
+Operation Region Handlers: For General Purpose IO and Generic Serial Bus
+operation regions, information about the Connection() object and any
+optional
+length information is passed to the region handler within the Context
+parameter.
+
+AcpiBufferToResource: This interface converts a raw AML buffer containing
+a
+resource template or resource descriptor to the ACPI_RESOURCE internal
+format
+suitable for use by device drivers. Can be used by an operation region
+handler
+to convert the Connection() buffer object into a ACPI_RESOURCE.
+
+Miscellaneous/Tools/TestSuites:
+-------------------------------
+
+Support for extended _HID names (Four alpha characters instead of three).
+Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
+Support for ACPI 5.0 features in the ASLTS test suite.
+Fully updated documentation (ACPICA and iASL reference documents.)
+
+ACPI Table Definition Language:
+-------------------------------
+
+Support for this language was implemented and released as a subsystem of
+the
+iASL compiler in 2010. (See the iASL compiler User Guide.)
+
+
+Non-ACPI 5.0 changes for this release:
+--------------------------------------
+
+1) ACPICA Core Subsystem:
+
+Fix a problem with operation region declarations where a failure can
+occur
+if
+the region name and an argument that evaluates to an object (such as the
+region address) are in different namespace scopes. Lin Ming, ACPICA BZ
+937.
+
+Do not abort an ACPI table load if an invalid space ID is found within.
+This
+will be caught later if the offending method is executed. ACPICA BZ 925.
+
+Fixed an issue with the FFixedHW space ID where the ID was not always
+recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
+
+Fixed a problem with the 32-bit generation of the unix-specific OSL
+(osunixxf.c). Lin Ming, ACPICA BZ 936.
+
+Several changes made to enable generation with the GCC 4.6 compiler.
+ACPICA BZ
+935.
+
+New error messages: Unsupported I/O requests (not 8/16/32 bit), and
+Index/Bank
+field registers out-of-range.
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Implemented the __PATH__ operator, which returns the full pathname
+of
+the current source file.
+
+AcpiHelp: Automatically display expanded keyword information for all ASL
+operators.
+
+Debugger: Add "Template" command to disassemble/dump resource template
+buffers.
+
+Added a new master script to generate and execute the ASLTS test suite.
+Automatically handles 32- and 64-bit generation. See tests/aslts.sh
+
+iASL: Fix problem with listing generation during processing of the
+Switch()
+operator where AML listing was disabled until the entire Switch block was
+completed.
+
+iASL: Improve support for semicolon statement terminators. Fix "invalid
+character" message for some cases when the semicolon is used. Semicolons
+are
+now allowed after every <Term> grammar element. ACPICA BZ 927.
+
+iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
+923.
+
+Disassembler: Fix problem with disassembly of the DataTableRegion
+operator
+where an inadvertent "Unhandled deferred opcode" message could be
+generated.
+
+3) 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: 90.2K Code, 23.9K Data, 114.1K Total
+ Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
+ Current Release:
+ Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
+ Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
+
+----------------------------------------
+22 September 2011. Summary of changes for version 20110922:
+
+0) ACPI 5.0 News:
+
+Support for ACPI 5.0 in ACPICA has been underway for several months and
+will
+be released at the same time that ACPI 5.0 is officially released.
+
+The ACPI 5.0 specification is on track for release in the next few
+months.
+
+1) ACPICA Core Subsystem:
+
+Fixed a problem where the maximum sleep time for the Sleep() operator was
+intended to be limited to two seconds, but was inadvertently limited to
+20
+seconds instead.
+
+Linux and Unix makefiles: Added header file dependencies to ensure
+correct
+generation of ACPICA core code and utilities. Also simplified the
+makefiles
+considerably through the use of the vpath variable to specify search
+paths.
+ACPICA BZ 924.
+
+2) iASL Compiler/Disassembler and Tools:
+
+iASL: Implemented support to check the access length for all fields
+created to
+access named Resource Descriptor fields. For example, if a resource field
+is
+defined to be two bits, a warning is issued if a CreateXxxxField() is
+used
+with an incorrect bit length. This is implemented for all current
+resource
+descriptor names. ACPICA BZ 930.
+
+Disassembler: Fixed a byte ordering problem with the output of 24-bit and
+56-
+bit integers.
+
+iASL: Fixed a couple of issues associated with variable-length package
+objects. 1) properly handle constants like One, Ones, Zero -- do not make
+a
+VAR_PACKAGE when these are used as a package length. 2) Allow the
+VAR_PACKAGE
+opcode (in addition to PACKAGE) when validating object types for
+predefined
+names.
+
+iASL: Emit statistics for all output files (instead of just the ASL input
+and
+AML output). Includes listings, hex files, etc.
+
+iASL: Added -G option to the table compiler to allow the compilation of
+custom
+ACPI tables. The only part of a table that is required is the standard
+36-
+byte
+ACPI header.
+
+AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
+headers),
+which also adds correct 64-bit support. Also, now all output filenames
+are
+completely lower case.
+
+AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
+loading table files. A warning is issued for any such tables. The only
+exception is an FADT. This also fixes a possible fault when attempting to
+load
+non-AML tables. ACPICA BZ 932.
+
+AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
+a
+missing table terminator could cause a fault when using the -p option.
+
+AcpiSrc: Fixed a possible divide-by-zero fault when generating file
+statistics.
+
+3) 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: 90.2K Code, 23.9K Data, 114.1K 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
+
+
+----------------------------------------
+23 June 2011. Summary of changes for version 20110623:
+
1) ACPI CA Core Subsystem:
-ASL Load() operator: Reinstate most restrictions on the incoming ACPI table
+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.
+
+----------------------------------------
+27 May 2011. Summary of changes for version 20110527:
+
+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.
@@ -15,16 +2574,20 @@
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.
+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
+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
@@ -32,69 +2595,89 @@
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
+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.
+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
+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
+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
+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
+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
+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,
+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
+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.
+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
+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
@@ -103,77 +2686,105 @@
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-
+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.
+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
+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.
+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
+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
+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.
+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 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
+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
+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
+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.
+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
+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
+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
+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
@@ -182,55 +2793,71 @@
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,
+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
+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.
+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).
+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.
+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
+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
+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
+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
+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
+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
@@ -239,11 +2866,12 @@
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
+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
@@ -255,55 +2883,71 @@
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
+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
+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
+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
+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
+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
+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
+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
+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
+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.
+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
+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
+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.)
@@ -313,33 +2957,40 @@
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
+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
+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
+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
+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
+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
@@ -347,53 +2998,67 @@
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
+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
+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
+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
+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,
+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
+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
+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
+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
@@ -401,58 +3066,74 @@
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
+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
+Disassembler: Decode the AccessSize within a Generic Address Structure
+(byte
access, word access, etc.) Note, this field does not allow arbitrary bit
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
+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
+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
+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
+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
+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
+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.
+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
+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
@@ -460,74 +3141,95 @@
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
+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
+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-
+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
+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
+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.
+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.
+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).
+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
+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
+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
+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
+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
+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
@@ -535,29 +3237,38 @@
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
+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
+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
+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.
@@ -565,32 +3276,41 @@
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
+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
+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
+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
+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
+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
@@ -598,58 +3318,75 @@
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
+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
+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.
+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
+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
+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
+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
+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
+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
+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
+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
@@ -658,18 +3395,21 @@
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
+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
+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
+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
@@ -678,11 +3418,12 @@
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
+Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
+Use
the #define __APPLE__ to enable this support.
----------------------------------------
28 May 2010. Summary of changes for version 20100528:
@@ -689,65 +3430,92 @@
Note: The ACPI 4.0a specification was released on April 5, 2010 and is
available at www.acpi.info. This is primarily an errata release.
1) ACPI CA Core Subsystem:
-Undefined ACPI tables: We are looking for the definitions for the following
+Undefined ACPI tables: We are looking for the definitions for the
+following
ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
-Implemented support to enable multi-byte transfers for Embedded Controller
-(EC) operation regions. 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
+Implemented support to enable multi-byte transfers for Embedded
+Controller
+(EC) operation regions. 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
-Implemented a performance enhancement for namespace search and access. This
-change enhances the performance of namespace searches and walks by adding a
-backpointer to the parent in each namespace node. On large namespaces, this
-change can improve overall ACPI performance by up to 9X. Adding a pointer to
-each namespace node increases the overall size of the internal namespace by
+Implemented a performance enhancement for namespace search and access.
+This
+change enhances the performance of namespace searches and walks by adding
+a
+backpointer to the parent in each namespace node. On large namespaces,
+this
+change can improve overall ACPI performance by up to 9X. Adding a pointer
+to
+each namespace node increases the overall size of the internal namespace
+by
about 5%, since each namespace entry usually consists of both a namespace
node and an ACPI operand object. However, this is the first growth of the
namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
-Implemented a performance optimization that reduces the number of namespace
-walks. On control method exit, only walk the namespace if the method is known
-to have created namespace objects outside of its local scope. Previously, the
-entire namespace was traversed on each control method exit. This change can
-improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore.
+Implemented a performance optimization that reduces the number of
+namespace
+walks. On control method exit, only walk the namespace if the method is
+known
+to have created namespace objects outside of its local scope. Previously,
+the
+entire namespace was traversed on each control method exit. This change
+can
+improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
+Moore.
-Added support to truncate I/O addresses to 16 bits for Windows compatibility.
+Added support to truncate I/O addresses to 16 bits for Windows
+compatibility.
Some ASL code has been seen in the field that inadvertently has bits set
-above bit 15. This feature is optional and is enabled if the BIOS requests
+above bit 15. This feature is optional and is enabled if the BIOS
+requests
any Windows OSI strings. It can also be enabled by the host OS. Matthew
Garrett, Bob Moore.
Added support to limit the maximum time for the ASL Sleep() operator. To
prevent accidental deep sleeps, limit the maximum time that Sleep() will
actually sleep. Configurable, the default maximum is two seconds. ACPICA
bugzilla 854.
-Added run-time validation support for the _WDG and_WED Microsoft predefined
-methods. These objects are defined by "Windows Instrumentation", and are not
+Added run-time validation support for the _WDG and_WED Microsoft
+predefined
+methods. These objects are defined by "Windows Instrumentation", and are
+not
part of the ACPI spec. ACPICA BZ 860.
Expanded all statistic counters used during namespace and device
-initialization from 16 to 32 bits in order to support very large namespaces.
+initialization from 16 to 32 bits in order to support very large
+namespaces.
-Replaced all instances of %d in printf format specifiers with %u since nearly
+Replaced all instances of %d in printf format specifiers with %u since
+nearly
all integers in ACPICA are unsigned.
-Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned
+Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
+returned
as AE_NO_HANDLER.
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
+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: 88.4K Code, 18.8K Data, 107.2K Total
Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
@@ -756,11 +3524,12 @@
Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
2) iASL Compiler/Disassembler and Tools:
iASL: Added compiler support for the _WDG and_WED Microsoft predefined
-methods. These objects are defined by "Windows Instrumentation", and are not
+methods. These objects are defined by "Windows Instrumentation", and are
+not
part of the ACPI spec. ACPICA BZ 860.
AcpiExec: added option to disable the memory tracking mechanism. The -dt
option will disable the tracking mechanism, which improves performance
considerably.
@@ -772,33 +3541,42 @@
28 April 2010. Summary of changes for version 20100428:
1) ACPI CA Core Subsystem:
Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
-including FADT-based and GPE Block Devices, execute any _PRW methods in the
+including FADT-based and GPE Block Devices, execute any _PRW methods in
+the
new table, and process any _Lxx/_Exx GPE methods in the new table. Any
runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
Devices. Provides compatibility with other ACPI implementations. Two new
-files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore.
+files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
+Moore.
-Fixed a regression introduced in version 20100331 within the table manager
-where initial table loading could fail. This was introduced in the fix for
-AcpiReallocateRootTable. Also, renamed some of fields in the table manager
+Fixed a regression introduced in version 20100331 within the table
+manager
+where initial table loading could fail. This was introduced in the fix
+for
+AcpiReallocateRootTable. Also, renamed some of fields in the table
+manager
data structures to clarify their meaning and use.
Fixed a possible allocation overrun during internal object copy in
-AcpiUtCopySimpleObject. The original code did not correctly handle the case
-where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847.
+AcpiUtCopySimpleObject. The original code did not correctly handle the
+case
+where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
+847.
Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
-possible access beyond end-of-allocation. Also, now fully validate descriptor
+possible access beyond end-of-allocation. Also, now fully validate
+descriptor
(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
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
+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: 87.9K Code, 18.6K Data, 106.5K Total
Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
@@ -807,29 +3585,39 @@
Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
2) iASL Compiler/Disassembler and Tools:
iASL: Implemented Min/Max/Len/Gran validation for address resource
-descriptors. This change implements validation for the address fields that
+descriptors. This change implements validation for the address fields
+that
are common to all address-type resource descriptors. These checks are
implemented: Checks for valid Min/Max, length within the Min/Max window,
-valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per
-table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c
+valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
+per
+table 6-40 in the ACPI 4.0a specification. Also split the large
+aslrestype1.c
and aslrestype2.c files into five new files. ACPICA BZ 840.
-iASL: Added support for the _Wxx predefined names. This support was missing
+iASL: Added support for the _Wxx predefined names. This support was
+missing
and these names were not recognized by the compiler as valid predefined
names. ACPICA BZ 851.
-iASL: Added an error for all predefined names that are defined to return no
-value and thus must be implemented as Control Methods. These include all of
+iASL: Added an error for all predefined names that are defined to return
+no
+value and thus must be implemented as Control Methods. These include all
+of
the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
-iASL: Implemented the -ts option to emit hex AML data in ASL format, as an
-ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be
-dynamically loaded via the Load() operator. Also cleaned up output for the -
+iASL: Implemented the -ts option to emit hex AML data in ASL format, as
+an
+ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
+be
+dynamically loaded via the Load() operator. Also cleaned up output for
+the
+-
ta and -tc options. ACPICA BZ 853.
Tests: Added a new file with examples of extended iASL error checking.
Demonstrates the advanced error checking ability of the iASL compiler.
Available at tests/misc/badcode.asl.
@@ -837,53 +3625,70 @@
----------------------------------------
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.
+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
+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,
+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
+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
+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.
+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
+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
+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
@@ -895,55 +3700,69 @@
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
+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
+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
+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,
+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
+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
+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
+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
+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
+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
@@ -954,11 +3773,12 @@
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(_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.
@@ -969,38 +3789,54 @@
Added the 2010 copyright to all module headers and signons. This affects
virtually every file in the ACPICA core subsystem, the iASL compiler, the
tools/utilities, and the test suites.
-Implemented a change to the AcpiGetDevices interface to eliminate unnecessary
+Implemented a change to the AcpiGetDevices interface to eliminate
+unnecessary
invocations of the _STA method. In the case where a specific _HID is
requested, do not run _STA until a _HID match is found. This eliminates
-potentially dozens of _STA calls during a search for a particular device/HID,
+potentially dozens of _STA calls during a search for a particular
+device/HID,
which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
-Implemented an additional repair for predefined method return values. Attempt
-to repair unexpected NULL elements within returned Package objects. Create an
-Integer of value zero, a NULL String, or a zero-length Buffer as appropriate.
+Implemented an additional repair for predefined method return values.
+Attempt
+to repair unexpected NULL elements within returned Package objects.
+Create
+an
+Integer of value zero, a NULL String, or a zero-length Buffer as
+appropriate.
ACPICA BZ 818. Lin Ming, Bob Moore.
-Removed the obsolete ACPI_INTEGER data type. This type was introduced as the
-code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with
-64-bit AML integers). It is now obsolete and this change removes it from the
-ACPICA code base, replaced by UINT64. The original typedef has been retained
-for now for compatibility with existing device driver code. ACPICA BZ 824.
+Removed the obsolete ACPI_INTEGER data type. This type was introduced as
+the
+code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
+(with
+64-bit AML integers). It is now obsolete and this change removes it from
+the
+ACPICA code base, replaced by UINT64. The original typedef has been
+retained
+for now for compatibility with existing device driver code. ACPICA BZ
+824.
-Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in
+Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
+in
the parse tree object.
-Added additional warning options for the gcc-4 generation. Updated the source
-accordingly. This includes some code restructuring to eliminate unreachable
-code, elimination of some gotos, elimination of unused return values, some
+Added additional warning options for the gcc-4 generation. Updated the
+source
+accordingly. This includes some code restructuring to eliminate
+unreachable
+code, elimination of some gotos, elimination of unused return values,
+some
additional casting, and removal of redundant declarations.
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
+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: 87.0K Code, 18.0K Data, 105.0K Total
Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
@@ -1015,51 +3851,76 @@
----------------------------------------
14 December 2009. Summary of changes for version 20091214:
1) ACPI CA Core Subsystem:
-Enhanced automatic data type conversions for predefined name repairs. This
-change expands the automatic repairs/conversions for predefined name return
-values to make Integers, Strings, and Buffers fully interchangeable. Also, a
-Buffer can be converted to a Package of Integers if necessary. The nsrepair.c
+Enhanced automatic data type conversions for predefined name repairs.
+This
+change expands the automatic repairs/conversions for predefined name
+return
+values to make Integers, Strings, and Buffers fully interchangeable.
+Also,
+a
+Buffer can be converted to a Package of Integers if necessary. The
+nsrepair.c
module was completely restructured. Lin Ming, Bob Moore.
-Implemented automatic removal of null package elements during predefined name
+Implemented automatic removal of null package elements during predefined
+name
repairs. This change will automatically remove embedded and trailing NULL
-package elements from returned package objects that are defined to contain a
-variable number of sub-packages. The driver is then presented with a package
+package elements from returned package objects that are defined to
+contain
+a
+variable number of sub-packages. The driver is then presented with a
+package
with no null elements to deal with. ACPICA BZ 819.
Implemented a repair for the predefined _FDE and _GTM names. The expected
-return value for both names is a Buffer of 5 DWORDs. This repair fixes two
-possible problems (both seen in the field), where a package of integers is
-returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim.
+return value for both names is a Buffer of 5 DWORDs. This repair fixes
+two
+possible problems (both seen in the field), where a package of integers
+is
+returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
+Kim.
-Implemented additional module-level code support. This change will properly
-execute module-level code that is not at the root of the namespace (under a
-Device object, etc.). Now executes the code within the current scope instead
+Implemented additional module-level code support. This change will
+properly
+execute module-level code that is not at the root of the namespace (under
+a
+Device object, etc.). Now executes the code within the current scope
+instead
of the root. ACPICA BZ 762. Lin Ming.
-Fixed possible mutex acquisition errors when running _REG methods. Fixes a
-problem where mutex errors can occur when running a _REG method that is in
-the same scope as a method-defined operation region or an operation region
-under a module-level IF block. This type of code is rare, so the problem has
+Fixed possible mutex acquisition errors when running _REG methods. Fixes
+a
+problem where mutex errors can occur when running a _REG method that is
+in
+the same scope as a method-defined operation region or an operation
+region
+under a module-level IF block. This type of code is rare, so the problem
+has
not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
-Fixed a possible memory leak during module-level code execution. An object
+Fixed a possible memory leak during module-level code execution. An
+object
could be leaked for each block of executed module-level code if the
-interpreter slack mode is enabled This change deletes any implicitly returned
+interpreter slack mode is enabled This change deletes any implicitly
+returned
object from the module-level code block. Lin Ming.
-Removed messages for successful predefined repair(s). The repair mechanism
-was considered too wordy. Now, messages are only unconditionally emitted if
+Removed messages for successful predefined repair(s). The repair
+mechanism
+was considered too wordy. Now, messages are only unconditionally emitted
+if
the return object cannot be repaired. Existing messages for successful
-repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827.
+repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
+827.
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
+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: 86.6K Code, 18.2K Data, 104.8K Total
Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
@@ -1067,62 +3928,79 @@
Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
2) iASL Compiler/Disassembler and Tools:
-iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files
+iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
+files
were no longer automatically removed at the termination of the compile.
acpiexec: Implemented the -f option to specify default region fill value.
This option specifies the value used to initialize buffers that simulate
-operation regions. Default value is zero. Useful for debugging problems that
+operation regions. Default value is zero. Useful for debugging problems
+that
depend on a specific initial value for a region or field.
----------------------------------------
12 November 2009. Summary of changes for version 20091112:
1) ACPI CA Core Subsystem:
Implemented a post-order callback to AcpiWalkNamespace. The existing
interface only has a pre-order callback. This change adds an additional
-parameter for a post-order callback which will be more useful for bus scans.
+parameter for a post-order callback which will be more useful for bus
+scans.
ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
Modified the behavior of the operation region memory mapping cache for
-SystemMemory. Ensure that the memory mappings created for operation regions
+SystemMemory. Ensure that the memory mappings created for operation
+regions
do not cross 4K page boundaries. Crossing a page boundary while mapping
-regions can cause kernel warnings on some hosts if the pages have different
-attributes. Such regions are probably BIOS bugs, and this is the workaround.
+regions can cause kernel warnings on some hosts if the pages have
+different
+attributes. Such regions are probably BIOS bugs, and this is the
+workaround.
Linux BZ 14445. Lin Ming.
Implemented an automatic repair for predefined methods that must return
-sorted lists. This change will repair (by sorting) packages returned by _ALR,
-_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted
+sorted lists. This change will repair (by sorting) packages returned by
+_ALR,
+_PSS, and _TSS. Drivers can now assume that the packages are correctly
+sorted
and do not contain NULL package elements. Adds one new file,
namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
-Fixed a possible fault during predefined name validation if a return Package
+Fixed a possible fault during predefined name validation if a return
+Package
object contains NULL elements. Also adds a warning if a NULL element is
-followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may
+followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
+may
include repair or removal of all such NULL elements where possible.
-Implemented additional module-level executable AML code support. This change
+Implemented additional module-level executable AML code support. This
+change
will execute module-level code that is not at the root of the namespace
-(under a Device object, etc.) at table load time. Module-level executable AML
+(under a Device object, etc.) at table load time. Module-level executable
+AML
code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
-Implemented a new internal function to create Integer objects. This function
+Implemented a new internal function to create Integer objects. This
+function
simplifies miscellaneous object creation code. ACPICA BZ 823.
-Reduced the severity of predefined repair messages, Warning to Info. Since
-the object was successfully repaired, a warning is too severe. Reduced to an
-info message for now. These messages may eventually be changed to debug-only.
+Reduced the severity of predefined repair messages, Warning to Info.
+Since
+the object was successfully repaired, a warning is too severe. Reduced to
+an
+info message for now. These messages may eventually be changed to debug-
+only.
ACPICA BZ 812.
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
+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: 85.8K Code, 18.0K Data, 103.8K Total
Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
@@ -1130,57 +4008,70 @@
Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
2) iASL Compiler/Disassembler and Tools:
-iASL: Implemented Switch() with While(1) so that Break works correctly. This
-change correctly implements the Switch operator with a surrounding While(1)
+iASL: Implemented Switch() with While(1) so that Break works correctly.
+This
+change correctly implements the Switch operator with a surrounding
+While(1)
so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
-iASL: Added a message if a package initializer list is shorter than package
-length. Adds a new remark for a Package() declaration if an initializer list
+iASL: Added a message if a package initializer list is shorter than
+package
+length. Adds a new remark for a Package() declaration if an initializer
+list
exists, but is shorter than the declared length of the package. Although
technically legal, this is probably a coding error and it is seen in the
field. ACPICA BZ 815. Lin Ming, Bob Moore.
-iASL: Fixed a problem where the compiler could fault after the maximum number
+iASL: Fixed a problem where the compiler could fault after the maximum
+number
of errors was reached (200).
-acpixtract: Fixed a possible warning for pointer cast if the compiler warning
+acpixtract: Fixed a possible warning for pointer cast if the compiler
+warning
level set very high.
----------------------------------------
13 October 2009. Summary of changes for version 20091013:
1) ACPI CA Core Subsystem:
-Fixed a problem where an Operation Region _REG method could be executed more
-than once. If a custom address space handler is installed by the host before
-the "initialize operation regions" phase of the ACPICA initialization, any
+Fixed a problem where an Operation Region _REG method could be executed
+more
+than once. If a custom address space handler is installed by the host
+before
+the "initialize operation regions" phase of the ACPICA initialization,
+any
_REG methods for that address space could be executed twice. This change
fixes the problem. ACPICA BZ 427. Lin Ming.
Fixed a possible memory leak for the Scope() ASL operator. When the exact
invocation of "Scope(\)" is executed (change scope to root), one internal
operand object was leaked. Lin Ming.
Implemented a run-time repair for the _MAT predefined method. If the _MAT
return value is defined as a Field object in the AML, and the field
-size is less than or equal to the default width of an integer (32 or 64),_MAT
+size is less than or equal to the default width of an integer (32 or
+64),_MAT
can incorrectly return an Integer instead of a Buffer. ACPICA now
automatically repairs this problem. ACPICA BZ 810.
-Implemented a run-time repair for the _BIF and _BIX predefined methods. The
+Implemented a run-time repair for the _BIF and _BIX predefined methods.
+The
"OEM Information" field is often incorrectly returned as an Integer with
-value zero if the field is not supported by the platform. This is due to an
+value zero if the field is not supported by the platform. This is due to
+an
ambiguity in the ACPI specification. The field should always be a string.
ACPICA now automatically repairs this problem by returning a NULL string
within the returned Package. ACPICA BZ 807.
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
+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: 85.6K Code, 18.0K Data, 103.6K Total
Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
@@ -1189,11 +4080,12 @@
Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
2) iASL Compiler/Disassembler and Tools:
Disassembler: Fixed a problem where references to external symbols that
-contained one or more parent-prefixes (carats) were not handled correctly,
+contained one or more parent-prefixes (carats) were not handled
+correctly,
possibly causing a fault. ACPICA BZ 806. Lin Ming.
Disassembler: Restructured the code so that all functions that handle
external symbols are in a single module. One new file is added,
common/dmextern.c.
@@ -1212,39 +4104,50 @@
1) ACPI CA Core Subsystem:
For Windows Vista compatibility, added the automatic execution of an _INI
method located at the namespace root (\_INI). This method is executed at
-table load time. This support is in addition to the automatic execution of
+table load time. This support is in addition to the automatic execution
+of
\_SB._INI. Lin Ming.
-Fixed a possible memory leak in the interpreter for AML package objects if
-the package initializer list is longer than the defined size of the package.
-This apparently can only happen if the BIOS changes the package size on the
+Fixed a possible memory leak in the interpreter for AML package objects
+if
+the package initializer list is longer than the defined size of the
+package.
+This apparently can only happen if the BIOS changes the package size on
+the
fly (seen in a _PSS object), as ASL compilers do not allow this. The
-interpreter will truncate the package to the defined size (and issue an error
-message), but previously could leave the extra objects undeleted if they were
-pre-created during the argument processing (such is the case if the package
+interpreter will truncate the package to the defined size (and issue an
+error
+message), but previously could leave the extra objects undeleted if they
+were
+pre-created during the argument processing (such is the case if the
+package
consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
Fixed a problem seen when a Buffer or String is stored to itself via ASL.
-This has been reported in the field. Previously, ACPICA would zero out the
+This has been reported in the field. Previously, ACPICA would zero out
+the
buffer/string. Now, the operation is treated as a noop. Provides Windows
compatibility. ACPICA BZ 803. Lin Ming.
Removed an extraneous error message for ASL constructs of the form
-Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements
-are seen in many BIOSs and are once again treated as NOOPs and no error is
+Store(LocalX,LocalX) when LocalX is uninitialized. These curious
+statements
+are seen in many BIOSs and are once again treated as NOOPs and no error
+is
emitted when they are encountered. ACPICA BZ 785.
Fixed an extraneous warning message if a _DSM reserved method returns a
Package object. _DSM can return any type of object, so validation on the
return type cannot be performed. ACPICA BZ 802.
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
+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: 85.5K Code, 18.0K Data, 103.5K Total
Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
@@ -1256,28 +4159,33 @@
iASL: Fixed a problem with the use of the Alias operator and Resource
Templates. The correct alias is now constructed and no error is emitted.
ACPICA BZ 738.
-iASL: Implemented the -I option to specify additional search directories for
+iASL: Implemented the -I option to specify additional search directories
+for
include files. Allows multiple additional search paths for include files.
-Directories are searched in the order specified on the command line (after
+Directories are searched in the order specified on the command line
+(after
the local directory is searched.) ACPICA BZ 800.
iASL: Fixed a problem where the full pathname for include files was not
emitted for warnings/errors. This caused the IDE support to not work
properly. ACPICA BZ 765.
iASL: Implemented the -@ option to specify a Windows-style response file
containing additional command line options. ACPICA BZ 801.
-AcpiExec: Added support to load multiple AML files simultaneously (such as a
+AcpiExec: Added support to load multiple AML files simultaneously (such
+as
+a
DSDT and multiple SSDTs). Also added support for wildcards within the AML
pathname. These features allow all machine tables to be easily loaded and
debugged together. ACPICA BZ 804.
-Disassembler: Added missing support for disassembly of HEST table Error Bank
+Disassembler: Added missing support for disassembly of HEST table Error
+Bank
subtables.
----------------------------------------
30 July 2009. Summary of changes for version 20090730:
@@ -1284,58 +4192,79 @@
The ACPI 4.0 implementation for ACPICA is complete with this release.
1) ACPI CA Core Subsystem:
ACPI 4.0: Added header file support for all new and changed ACPI tables.
-Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new
-for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT,
-EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There
+Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
+new
+for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
+BERT,
+EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
+There
have been some ACPI 4.0 changes to other existing tables. Split the large
actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
-ACPI 4.0: Implemented predefined name validation for all new names. There are
-31 new names in ACPI 4.0. The predefined validation module was split into two
+ACPI 4.0: Implemented predefined name validation for all new names. There
+are
+31 new names in ACPI 4.0. The predefined validation module was split into
+two
files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
Implemented support for so-called "module-level executable code". This is
-executable AML code that exists outside of any control method and is intended
-to be executed at table load time. Although illegal since ACPI 2.0, this type
-of code still exists and is apparently still being created. Blocks of this
-code are now detected and executed as intended. Currently, the code blocks
+executable AML code that exists outside of any control method and is
+intended
+to be executed at table load time. Although illegal since ACPI 2.0, this
+type
+of code still exists and is apparently still being created. Blocks of
+this
+code are now detected and executed as intended. Currently, the code
+blocks
must exist under either an If, Else, or While construct; these are the
typical cases seen in the field. ACPICA BZ 762. Lin Ming.
Implemented an automatic dynamic repair for predefined names that return
-nested Package objects. This applies to predefined names that are defined to
+nested Package objects. This applies to predefined names that are defined
+to
return a variable-length Package of sub-packages. If the number of sub-
-packages is one, BIOS code is occasionally seen that creates a simple single
+packages is one, BIOS code is occasionally seen that creates a simple
+single
package with no sub-packages. This code attempts to fix the problem by
-wrapping a new package object around the existing package. These methods can
-be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ
+wrapping a new package object around the existing package. These methods
+can
+be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
+BZ
790.
-Fixed a regression introduced in 20090625 for the AcpiGetDevices interface.
-The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA
+Fixed a regression introduced in 20090625 for the AcpiGetDevices
+interface.
+The _HID/_CID matching was broken and no longer matched IDs correctly.
+ACPICA
BZ 793.
Fixed a problem with AcpiReset where the reset would silently fail if the
-register was one of the protected I/O ports. AcpiReset now bypasses the port
-validation mechanism. This may eventually be driven into the AcpiRead/Write
+register was one of the protected I/O ports. AcpiReset now bypasses the
+port
+validation mechanism. This may eventually be driven into the
+AcpiRead/Write
interfaces.
Fixed a regression related to the recent update of the AcpiRead/Write
-interfaces. A sleep/suspend could fail if the optional PM2 Control register
+interfaces. A sleep/suspend could fail if the optional PM2 Control
+register
does not exist during an attempt to write the Bus Master Arbitration bit.
-(However, some hosts already delete the code that writes this bit, and the
+(However, some hosts already delete the code that writes this bit, and
+the
code may in fact be obsolete at this date.) ACPICA BZ 799.
-Fixed a problem where AcpiTerminate could fault if inadvertently called twice
+Fixed a problem where AcpiTerminate could fault if inadvertently called
+twice
in succession. ACPICA BZ 795.
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
+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: 84.7K Code, 17.8K Data, 102.5K Total
Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
@@ -1356,59 +4285,78 @@
continue for the next few releases.
1) ACPI CA Core Subsystem:
ACPI 4.0: Implemented interpreter support for the IPMI operation region
-address space. Includes support for bi-directional data buffers and an IPMI
-address space handler (to be installed by an IPMI device driver.) ACPICA BZ
+address space. Includes support for bi-directional data buffers and an
+IPMI
+address space handler (to be installed by an IPMI device driver.) ACPICA
+BZ
773. Lin Ming.
-ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes
+ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
+Includes
support in both the header files and the disassembler.
Completed a major update for the AcpiGetObjectInfo external interface.
Changes include:
- Support for variable, unlimited length HID, UID, and CID strings.
- - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.)
+ - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
+etc.)
- Call the _SxW power methods on behalf of a device object.
- Determine if a device is a PCI root bridge.
- Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
-These changes will require an update to all callers of this interface. See
-the updated ACPICA Programmer Reference for details. One new source file has
+These changes will require an update to all callers of this interface.
+See
+the updated ACPICA Programmer Reference for details. One new source file
+has
been added - utilities/utids.c. ACPICA BZ 368, 780.
Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
-transfers. The Value parameter has been extended from 32 bits to 64 bits in
-order to support new ACPI 4.0 tables. These changes will require an update to
+transfers. The Value parameter has been extended from 32 bits to 64 bits
+in
+order to support new ACPI 4.0 tables. These changes will require an
+update
+to
all callers of these interfaces. See the ACPICA Programmer Reference for
details. ACPICA BZ 768.
-Fixed several problems with AcpiAttachData. The handler was not invoked when
-the host node was deleted. The data sub-object was not automatically deleted
-when the host node was deleted. The interface to the handler had an unused
+Fixed several problems with AcpiAttachData. The handler was not invoked
+when
+the host node was deleted. The data sub-object was not automatically
+deleted
+when the host node was deleted. The interface to the handler had an
+unused
parameter, this was removed. ACPICA BZ 778.
Enhanced the function that dumps ACPI table headers. All non-printable
-characters in the string fields are now replaced with '?' (Signature, OemId,
+characters in the string fields are now replaced with '?' (Signature,
+OemId,
OemTableId, and CompilerId.) ACPI tables with non-printable characters in
these fields are occasionally seen in the field. ACPICA BZ 788.
Fixed a problem with predefined method repair code where the code that
-attempts to repair/convert an object of incorrect type is only executed on
-the first time the predefined method is called. The mechanism that disables
+attempts to repair/convert an object of incorrect type is only executed
+on
+the first time the predefined method is called. The mechanism that
+disables
warnings on subsequent calls was interfering with the repair mechanism.
ACPICA BZ 781.
-Fixed a possible memory leak in the predefined validation/repair code when a
+Fixed a possible memory leak in the predefined validation/repair code
+when
+a
buffer is automatically converted to an expected string object.
-Removed obsolete 16-bit files from the distribution and from the current git
+Removed obsolete 16-bit files from the distribution and from the current
+git
tree head. ACPICA BZ 776.
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
+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: 83.4K Code, 17.5K Data, 100.9K Total
Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
@@ -1427,12 +4375,15 @@
----------------------------------------
21 May 2009. Summary of changes for version 20090521:
1) ACPI CA Core Subsystem:
-Disabled the preservation of the SCI enable bit in the PM1 control register.
-The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be
+Disabled the preservation of the SCI enable bit in the PM1 control
+register.
+The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
+to
+be
a "preserved" bit - "OSPM always preserves this bit position", section
4.7.3.2.1. However, some machines fail if this bit is in fact preserved
because the bit needs to be explicitly set by the OS as a workaround. No
machines fail if the bit is not preserved. Therefore, ACPICA no longer
attempts to preserve this bit.
@@ -1439,49 +4390,65 @@
Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
incorrectly formed _PRT package could cause a fault. Added validation to
ensure that each package element is actually a sub-package.
-Implemented a new interface to install or override a single control method,
-AcpiInstallMethod. This interface is useful when debugging in order to repair
-an existing method or to install a missing method without having to override
+Implemented a new interface to install or override a single control
+method,
+AcpiInstallMethod. This interface is useful when debugging in order to
+repair
+an existing method or to install a missing method without having to
+override
the entire ACPI table. See the ACPICA Programmer Reference for use and
examples. Lin Ming, Bob Moore.
Fixed several reference count issues with the DdbHandle object that is
-created from a Load or LoadTable operator. Prevent premature deletion of the
-object. Also, mark the object as invalid once the table has been unloaded.
-This is needed because the handle itself may not be deleted after the table
+created from a Load or LoadTable operator. Prevent premature deletion of
+the
+object. Also, mark the object as invalid once the table has been
+unloaded.
+This is needed because the handle itself may not be deleted after the
+table
unload, depending on whether it has been stored in a named object by the
caller. Lin Ming.
Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
-mutexes of the same sync level are acquired but then not released in strict
-opposite order, the internally maintained Current Sync Level becomes confused
+mutexes of the same sync level are acquired but then not released in
+strict
+opposite order, the internally maintained Current Sync Level becomes
+confused
and can cause subsequent execution errors. ACPICA BZ 471.
Changed the allowable release order for ASL mutex objects. The ACPI 4.0
-specification has been changed to make the SyncLevel for mutex objects more
-useful. When releasing a mutex, the SyncLevel of the mutex must now be the
-same as the current sync level. This makes more sense than the previous rule
+specification has been changed to make the SyncLevel for mutex objects
+more
+useful. When releasing a mutex, the SyncLevel of the mutex must now be
+the
+same as the current sync level. This makes more sense than the previous
+rule
(SyncLevel less than or equal). This change updates the code to match the
specification.
-Fixed a problem with the local version of the AcpiOsPurgeCache function. The
+Fixed a problem with the local version of the AcpiOsPurgeCache function.
+The
(local) cache must be locked during all cache object deletions. Andrew
Baumann.
-Updated the Load operator to use operation region interfaces. This replaces
-direct memory mapping with region access calls. Now, all region accesses go
+Updated the Load operator to use operation region interfaces. This
+replaces
+direct memory mapping with region access calls. Now, all region accesses
+go
through the installed region handler as they should.
-Simplified and optimized the NsGetNextNode function. Reduced parameter count
+Simplified and optimized the NsGetNextNode function. Reduced parameter
+count
and reduced code for this frequently used function.
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
+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: 82.8K Code, 17.5K Data, 100.3K Total
Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
@@ -1489,45 +4456,55 @@
Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
2) iASL Compiler/Disassembler and Tools:
-Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems
-with sub-table disassembly and handling invalid sub-tables. Attempt recovery
+Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
+problems
+with sub-table disassembly and handling invalid sub-tables. Attempt
+recovery
after an invalid sub-table ID.
----------------------------------------
22 April 2009. Summary of changes for version 20090422:
1) ACPI CA Core Subsystem:
-Fixed a compatibility issue with the recently released I/O port protection
+Fixed a compatibility issue with the recently released I/O port
+protection
mechanism. For windows compatibility, 1) On a port protection violation,
-simply ignore the request and do not return an exception (allow the control
+simply ignore the request and do not return an exception (allow the
+control
method to continue execution.) 2) If only part of the request overlaps a
-protected port, read/write the individual ports that are not protected. Linux
+protected port, read/write the individual ports that are not protected.
+Linux
BZ 13036. Lin Ming
-Enhanced the execution of the ASL/AML BreakPoint operator so that it actually
+Enhanced the execution of the ASL/AML BreakPoint operator so that it
+actually
breaks into the AML debugger if the debugger is present. This matches the
ACPI-defined behavior.
Fixed several possible warnings related to the use of the configurable
ACPI_THREAD_ID. This type can now be configured as either an integer or a
pointer with no warnings. Also fixes several warnings in printf-like
statements for the 64-bit build when the type is configured as a pointer.
ACPICA BZ 766, 767.
-Fixed a number of possible warnings when compiling with gcc 4+ (depending on
-warning options.) Examples include printf formats, aliasing, unused globals,
+Fixed a number of possible warnings when compiling with gcc 4+ (depending
+on
+warning options.) Examples include printf formats, aliasing, unused
+globals,
missing prototypes, missing switch default statements, use of non-ANSI
-library functions, use of non-ANSI constructs. See generate/unix/Makefile for
+library functions, use of non-ANSI constructs. See generate/unix/Makefile
+for
a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
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
+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: 82.6K Code, 17.6K Data, 100.2K Total
Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
@@ -1535,90 +4512,122 @@
Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
2) iASL Compiler/Disassembler and Tools:
-iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on
+iASL: Fixed a generation warning from Bison 2.3 and fixed several
+warnings
+on
the 64-bit build.
-iASL: Fixed a problem where the Unix/Linux versions of the compiler could not
+iASL: Fixed a problem where the Unix/Linux versions of the compiler could
+not
correctly digest Windows/DOS formatted files (with CR/LF).
iASL: Added a new option for "quiet mode" (-va) that produces only the
compilation summary, not individual errors and warnings. Useful for large
batch compilations.
-AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex
-timeout that can be used to detect hang conditions during execution of AML
-code (includes both internal semaphores and AML-defined mutexes and events.)
+AcpiExec: Implemented a new option (-z) to enable a forced
+semaphore/mutex
+timeout that can be used to detect hang conditions during execution of
+AML
+code (includes both internal semaphores and AML-defined mutexes and
+events.)
Added new makefiles for the generation of acpica in a generic unix-like
-environment. These makefiles are intended to generate the acpica tools and
+environment. These makefiles are intended to generate the acpica tools
+and
utilities from the original acpica git source tree structure.
Test Suites: Updated and cleaned up the documentation files. Updated the
-copyrights to 2009, affecting all source files. Use the new version of iASL
-with quiet mode. Increased the number of available semaphores in the Windows
-OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added
+copyrights to 2009, affecting all source files. Use the new version of
+iASL
+with quiet mode. Increased the number of available semaphores in the
+Windows
+OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
+added
an alternate implementation of the semaphore timeout to allow aslts to
execute fully on Cygwin.
----------------------------------------
20 March 2009. Summary of changes for version 20090320:
1) ACPI CA Core Subsystem:
-Fixed a possible race condition between AcpiWalkNamespace and dynamic table
-unloads. Added a reader/writer locking mechanism to allow multiple concurrent
-namespace walks (readers), but block a dynamic table unload until it can gain
-exclusive write access to the namespace. This fixes a problem where a table
-unload could (possibly catastrophically) delete the portion of the namespace
-that is currently being examined by a walk. Adds a new file, utlock.c, that
+Fixed a possible race condition between AcpiWalkNamespace and dynamic
+table
+unloads. Added a reader/writer locking mechanism to allow multiple
+concurrent
+namespace walks (readers), but block a dynamic table unload until it can
+gain
+exclusive write access to the namespace. This fixes a problem where a
+table
+unload could (possibly catastrophically) delete the portion of the
+namespace
+that is currently being examined by a walk. Adds a new file, utlock.c,
+that
implements the reader/writer lock mechanism. ACPICA BZ 749.
-Fixed a regression introduced in version 20090220 where a change to the FADT
-handling could cause the ACPICA subsystem to access non-existent I/O ports.
+Fixed a regression introduced in version 20090220 where a change to the
+FADT
+handling could cause the ACPICA subsystem to access non-existent I/O
+ports.
-Modified the handling of FADT register and table (FACS/DSDT) addresses. The
+Modified the handling of FADT register and table (FACS/DSDT) addresses.
+The
FADT can contain both 32-bit and 64-bit versions of these addresses.
-Previously, the 64-bit versions were favored, meaning that if both 32 and 64
+Previously, the 64-bit versions were favored, meaning that if both 32 and
+64
versions were valid, but not equal, the 64-bit version was used. This was
-found to cause some machines to fail. Now, in this case, the 32-bit version
+found to cause some machines to fail. Now, in this case, the 32-bit
+version
is used instead. This now matches the Windows behavior.
-Implemented a new mechanism to protect certain I/O ports. Provides Microsoft
+Implemented a new mechanism to protect certain I/O ports. Provides
+Microsoft
compatibility and protects the standard PC I/O ports from access via AML
code. Adds a new file, hwvalid.c
Fixed a possible extraneous warning message from the FADT support. The
message warns of a 32/64 length mismatch between the legacy and GAS
definitions for a register.
-Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is
-made obsolete by the port protection mechanism above. It was previously used
-to validate the entire address range of an operation region, which could be
+Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
+is
+made obsolete by the port protection mechanism above. It was previously
+used
+to validate the entire address range of an operation region, which could
+be
incorrect if the range included illegal ports, but fields within the
operation region did not actually access those ports. Validation is now
performed on a per-field basis instead of the entire region.
Modified the handling of the PM1 Status Register ignored bit (bit 11.)
-Ignored bits must be "preserved" according to the ACPI spec. Usually, this
-means a read/modify/write when writing to the register. However, for status
-registers, writing a one means clear the event. Writing a zero means preserve
-the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec,
+Ignored bits must be "preserved" according to the ACPI spec. Usually,
+this
+means a read/modify/write when writing to the register. However, for
+status
+registers, writing a one means clear the event. Writing a zero means
+preserve
+the event (do not clear.) This behavior is clarified in the ACPI 4.0
+spec,
and the ACPICA code now simply always writes a zero to the ignored bit.
-Modified the handling of ignored bits for the PM1 A/B Control Registers. As
+Modified the handling of ignored bits for the PM1 A/B Control Registers.
+As
per the ACPI specification, for the control registers, preserve
-(read/modify/write) all bits that are defined as either reserved or ignored.
+(read/modify/write) all bits that are defined as either reserved or
+ignored.
Updated the handling of write-only bits in the PM1 A/B Control Registers.
When reading the register, zero the write-only bits as per the ACPI spec.
ACPICA BZ 443. Lin Ming.
Removed "Linux" from the list of supported _OSI strings. Linux no longer
-wants to reply true to this request. The Windows strings are the only paths
+wants to reply true to this request. The Windows strings are the only
+paths
through the AML that are tested and known to work properly.
Previous Release:
Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
@@ -1626,63 +4635,90 @@
Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
2) iASL Compiler/Disassembler and Tools:
-Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and
+Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
+and
aetables.c
----------------------------------------
20 February 2009. Summary of changes for version 20090220:
1) ACPI CA Core Subsystem:
-Optimized the ACPI register locking. Removed locking for reads from the ACPI
-bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is
+Optimized the ACPI register locking. Removed locking for reads from the
+ACPI
+bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
+is
not required when reading the single-bit registers. The
-AcpiGetRegisterUnlocked function is no longer needed and has been removed.
-This will improve performance for reads on these registers. ACPICA BZ 760.
+AcpiGetRegisterUnlocked function is no longer needed and has been
+removed.
+This will improve performance for reads on these registers. ACPICA BZ
+760.
Fixed the parameter validation for AcpiRead/Write. Now return
-AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if
-the register has an address of zero. Previously, these cases simply returned
-AE_OK. For optional registers such as PM1B status/enable/control, the caller
+AE_BAD_PARAMETER if the input register pointer is null, and
+AE_BAD_ADDRESS
+if
+the register has an address of zero. Previously, these cases simply
+returned
+AE_OK. For optional registers such as PM1B status/enable/control, the
+caller
should check for a valid register address before calling. ACPICA BZ 748.
Renamed the external ACPI bit register access functions. Renamed
AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
-functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister.
-Also, restructured the code for these functions by simplifying the code path
+functions. The new names are AcpiReadBitRegister and
+AcpiWriteBitRegister.
+Also, restructured the code for these functions by simplifying the code
+path
and condensing duplicate code to reduce code size.
Added new functions to transparently handle the possibly split PM1 A/B
-registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions
-now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ
+registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
+functions
+now handle the split registers for PM1 Status, Enable, and Control.
+ACPICA
+BZ
746.
-Added a function to handle the PM1 control registers, AcpiHwWritePm1Control.
-This function writes both of the PM1 control registers (A/B). These registers
-are different than the PM1 A/B status and enable registers in that different
-values can be written to the A/B registers. Most notably, the SLP_TYP bits
-can be different, as per the values returned from the _Sx predefined methods.
+Added a function to handle the PM1 control registers,
+AcpiHwWritePm1Control.
+This function writes both of the PM1 control registers (A/B). These
+registers
+are different than the PM1 A/B status and enable registers in that
+different
+values can be written to the A/B registers. Most notably, the SLP_TYP
+bits
+can be different, as per the values returned from the _Sx predefined
+methods.
-Removed an extra register write within AcpiHwClearAcpiStatus. This function
-was writing an optional PM1B status register twice. The existing call to the
-low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B
+Removed an extra register write within AcpiHwClearAcpiStatus. This
+function
+was writing an optional PM1B status register twice. The existing call to
+the
+low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
+A/B
register. ACPICA BZ 751.
-Split out the PM1 Status registers from the FADT. Added new globals for these
+Split out the PM1 Status registers from the FADT. Added new globals for
+these
registers (A/B), similar to the way the PM1 Enable registers are handled.
-Instead of overloading the FADT Event Register blocks. This makes the code
+Instead of overloading the FADT Event Register blocks. This makes the
+code
clearer and less prone to error.
-Fixed the warning message for when the platform contains too many ACPI tables
-for the default size of the global root table data structure. The calculation
+Fixed the warning message for when the platform contains too many ACPI
+tables
+for the default size of the global root table data structure. The
+calculation
for the truncation value was incorrect.
Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
-obsolete macro, since it is now a simple reference to ->common.type. There
+obsolete macro, since it is now a simple reference to ->common.type.
+There
were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
simply SLEEP_TYPE. ACPICA BZ 754.
@@ -1689,17 +4725,20 @@
Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
function is only needed on 64-bit host operating systems and is thus not
included for 32-bit hosts.
-Debug output: print the input and result for invocations of the _OSI reserved
-control method via the ACPI_LV_INFO debug level. Also, reduced some of the
+Debug output: print the input and result for invocations of the _OSI
+reserved
+control method via the ACPI_LV_INFO debug level. Also, reduced some of
+the
verbosity of this debug level. Len Brown.
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
+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: 82.3K Code, 17.5K Data, 99.8K Total
Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
@@ -1719,25 +4758,32 @@
Added the 2009 copyright to all module headers and signons. This affects
virtually every file in the ACPICA core subsystem, the iASL compiler, and
the tools/utilities.
-Implemented a change to allow the host to override any ACPI table, including
-dynamically loaded tables. Previously, only the DSDT could be replaced by the
-host. With this change, the AcpiOsTableOverride interface is called for each
-table found in the RSDT/XSDT during ACPICA initialization, and also whenever
+Implemented a change to allow the host to override any ACPI table,
+including
+dynamically loaded tables. Previously, only the DSDT could be replaced by
+the
+host. With this change, the AcpiOsTableOverride interface is called for
+each
+table found in the RSDT/XSDT during ACPICA initialization, and also
+whenever
a table is dynamically loaded via the AML Load operator.
Updated FADT flag definitions, especially the Boot Architecture flags.
-Debugger: For the Find command, automatically pad the input ACPI name with
-underscores if the name is shorter than 4 characters. This enables a match
+Debugger: For the Find command, automatically pad the input ACPI name
+with
+underscores if the name is shorter than 4 characters. This enables a
+match
with the actual namespace entry which is itself padded with underscores.
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
+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: 82.3K Code, 17.4K Data, 99.7K Total
Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
@@ -1747,23 +4793,26 @@
2) iASL Compiler/Disassembler and Tools:
Fix build error under Bison-2.4.
-Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture
+Dissasembler: Enhanced FADT support. Added decoding of the Boot
+Architecture
flags. Now decode all flags, regardless of the FADT version. Flag output
includes the FADT version which first defined each flag.
-The iASL -g option now dumps the RSDT to a file (in addition to the FADT and
+The iASL -g option now dumps the RSDT to a file (in addition to the FADT
+and
DSDT). Windows only.
----------------------------------------
04 December 2008. Summary of changes for version 20081204:
1) ACPI CA Core Subsystem:
-The ACPICA Programmer Reference has been completely updated and revamped for
+The ACPICA Programmer Reference has been completely updated and revamped
+for
this release. This includes updates to the external interfaces, OSL
interfaces, the overview sections, and the debugger reference.
Several new ACPICA interfaces have been implemented and documented in the
programmer reference:
@@ -1773,35 +4822,42 @@
AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
-Most of the public ACPI hardware-related interfaces have been moved to a new
+Most of the public ACPI hardware-related interfaces have been moved to a
+new
file, components/hardware/hwxface.c
Enhanced the FADT parsing and low-level ACPI register access: The ACPI
register lengths within the FADT are now used, and the low level ACPI
register access no longer hardcodes the ACPI register lengths. Given that
-there may be some risk in actually trusting the FADT register lengths, a run-
-time option was added to fall back to the default hardcoded lengths if the
+there may be some risk in actually trusting the FADT register lengths, a
+run-
+time option was added to fall back to the default hardcoded lengths if
+the
FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
-option is set to true for now, and a warning is issued if a suspicious FADT
+option is set to true for now, and a warning is issued if a suspicious
+FADT
register length is overridden with the default value.
-Fixed a reference count issue in NsRepairObject. This problem was introduced
+Fixed a reference count issue in NsRepairObject. This problem was
+introduced
in version 20081031 as part of a fix to repair Buffer objects within
Packages. Lin Ming.
Added semaphore support to the Linux/Unix application OS-services layer
(OSL). ACPICA BZ 448. Lin Ming.
-Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will
+Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
+will
be implemented in the OSL, or will binary semaphores be used instead.
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
+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: 81.7K Code, 17.3K Data, 99.0K Total
Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
@@ -1809,92 +4865,128 @@
Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
2) iASL Compiler/Disassembler and Tools:
-iASL: Completed the '-e' option to include additional ACPI tables in order to
-aid with disassembly and External statement generation. ACPICA BZ 742. Lin
+iASL: Completed the '-e' option to include additional ACPI tables in
+order
+to
+aid with disassembly and External statement generation. ACPICA BZ 742.
+Lin
Ming.
iASL: Removed the "named object in while loop" error. The compiler cannot
determine how many times a loop will execute. ACPICA BZ 730.
-Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA
+Disassembler: Implemented support for FADT revision 2 (MS extension).
+ACPICA
BZ 743.
-Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG).
+Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
+MCFG).
----------------------------------------
31 October 2008. Summary of changes for version 20081031:
1) ACPI CA Core Subsystem:
-Restructured the ACPICA header files into public/private. acpi.h now includes
-only the "public" acpica headers. All other acpica headers are "private" and
-should not be included by acpica users. One new file, accommon.h is used to
-include the commonly used private headers for acpica code generation. Future
+Restructured the ACPICA header files into public/private. acpi.h now
+includes
+only the "public" acpica headers. All other acpica headers are "private"
+and
+should not be included by acpica users. One new file, accommon.h is used
+to
+include the commonly used private headers for acpica code generation.
+Future
plans include moving all private headers to a new subdirectory.
Implemented an automatic Buffer->String return value conversion for
-predefined ACPI methods. For these methods (such as _BIF), added automatic
-conversion for return objects that are required to be a String, but a Buffer
-was found instead. This can happen when reading string battery data from an
-operation region, because it used to be difficult to convert the data from
-buffer to string from within the ASL. Ensures that the host OS is provided
+predefined ACPI methods. For these methods (such as _BIF), added
+automatic
+conversion for return objects that are required to be a String, but a
+Buffer
+was found instead. This can happen when reading string battery data from
+an
+operation region, because it used to be difficult to convert the data
+from
+buffer to string from within the ASL. Ensures that the host OS is
+provided
with a valid null-terminated string. Linux BZ 11822.
-Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector
-into two: one for the 32-bit vector, another for the 64-bit vector. This is
-required because the host OS must setup the wake much differently for each
-vector (real vs. protected mode, etc.) and the interface itself should not be
-deciding which vector to use. Also, eliminated the GetFirmwareWakingVector
-interface, as it served no purpose (only the firmware reads the vector, OS
+Updated the FACS waking vector interfaces. Split
+AcpiSetFirmwareWakingVector
+into two: one for the 32-bit vector, another for the 64-bit vector. This
+is
+required because the host OS must setup the wake much differently for
+each
+vector (real vs. protected mode, etc.) and the interface itself should
+not
+be
+deciding which vector to use. Also, eliminated the
+GetFirmwareWakingVector
+interface, as it served no purpose (only the firmware reads the vector,
+OS
only writes the vector.) ACPICA BZ 731.
-Implemented a mechanism to escape infinite AML While() loops. Added a loop
-counter to force exit from AML While loops if the count becomes too large.
+Implemented a mechanism to escape infinite AML While() loops. Added a
+loop
+counter to force exit from AML While loops if the count becomes too
+large.
This can occur in poorly written AML when the hardware does not respond
-within a while loop and the loop does not implement a timeout. The maximum
-loop count is configurable. A new exception code is returned when a loop is
+within a while loop and the loop does not implement a timeout. The
+maximum
+loop count is configurable. A new exception code is returned when a loop
+is
broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
Optimized the execution of AML While loops. Previously, a control state
object was allocated and freed for each execution of the loop. The
-optimization is to simply reuse the control state for each iteration. This
+optimization is to simply reuse the control state for each iteration.
+This
speeds up the raw loop execution time by about 5%.
-Enhanced the implicit return mechanism. For Windows compatibility, return an
-implicit integer of value zero for methods that contain no executable code.
+Enhanced the implicit return mechanism. For Windows compatibility, return
+an
+implicit integer of value zero for methods that contain no executable
+code.
Such methods are seen in the field as stubs (presumably), and can cause
drivers to fail if they expect a return value. Lin Ming.
Allow multiple backslashes as root prefixes in namepaths. In a fully
-qualified namepath, allow multiple backslash prefixes. This can happen (and
+qualified namepath, allow multiple backslash prefixes. This can happen
+(and
is seen in the field) because of the use of a double-backslash in strings
-(since backslash is the escape character) causing confusion. ACPICA BZ 739
+(since backslash is the escape character) causing confusion. ACPICA BZ
+739
Lin Ming.
Emit a warning if two different FACS or DSDT tables are discovered in the
-FADT. Checks if there are two valid but different addresses for the FACS and
+FADT. Checks if there are two valid but different addresses for the FACS
+and
DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
-Consolidated the method argument count validation code. Merged the code that
+Consolidated the method argument count validation code. Merged the code
+that
validates control method argument counts into the predefined validation
-module. Eliminates possible multiple warnings for incorrect argument counts.
+module. Eliminates possible multiple warnings for incorrect argument
+counts.
Implemented ACPICA example code. Includes code for ACPICA initialization,
handler installation, and calling a control method. Available at
source/tools/examples.
-Added a global pointer for FACS table to simplify internal FACS access. Use
-the global pointer instead of using AcpiGetTableByIndex for each FACS access.
+Added a global pointer for FACS table to simplify internal FACS access.
+Use
+the global pointer instead of using AcpiGetTableByIndex for each FACS
+access.
This simplifies the code for the Global Lock and the Firmware Waking
Vector(s).
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
+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: 81.2K Code, 17.0K Data, 98.2K Total
Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
@@ -1902,18 +4994,24 @@
Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
2) iASL Compiler/Disassembler and Tools:
-iASL: Improved disassembly of external method calls. Added the -e option to
-allow the inclusion of additional ACPI tables to help with the disassembly of
+iASL: Improved disassembly of external method calls. Added the -e option
+to
+allow the inclusion of additional ACPI tables to help with the
+disassembly
+of
method invocations and the generation of external declarations during the
disassembly. Certain external method invocations cannot be disassembled
-properly without the actual declaration of the method. Use the -e option to
-include the table where the external method(s) are actually declared. Most
+properly without the actual declaration of the method. Use the -e option
+to
+include the table where the external method(s) are actually declared.
+Most
useful for disassembling SSDTs that make method calls back to the master
-DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d
+DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
+-d
-e dsdt.aml ssdt1.aml
iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
problem where the use of an alias within a namepath would result in a not
found error or cause the compiler to fault. Also now allows forward
@@ -1922,50 +5020,65 @@
----------------------------------------
26 September 2008. Summary of changes for version 20080926:
1) ACPI CA Core Subsystem:
-Designed and implemented a mechanism to validate predefined ACPI methods and
-objects. This code validates the predefined ACPI objects (objects whose names
+Designed and implemented a mechanism to validate predefined ACPI methods
+and
+objects. This code validates the predefined ACPI objects (objects whose
+names
start with underscore) that appear in the namespace, at the time they are
evaluated. The argument count and the type of the returned object are
-validated against the ACPI specification. The purpose of this validation is
-to detect problems with the BIOS-implemented predefined ACPI objects before
-the results are returned to the ACPI-related drivers. Future enhancements may
+validated against the ACPI specification. The purpose of this validation
+is
+to detect problems with the BIOS-implemented predefined ACPI objects
+before
+the results are returned to the ACPI-related drivers. Future enhancements
+may
include actual repair of incorrect return objects where possible. Two new
files are nspredef.c and acpredef.h.
-Fixed a fault in the AML parser if a memory allocation fails during the Op
+Fixed a fault in the AML parser if a memory allocation fails during the
+Op
completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
-Fixed an issue with implicit return compatibility. This change improves the
-implicit return mechanism to be more compatible with the MS interpreter. Lin
+Fixed an issue with implicit return compatibility. This change improves
+the
+implicit return mechanism to be more compatible with the MS interpreter.
+Lin
Ming, ACPICA BZ 349.
-Implemented support for zero-length buffer-to-string conversions. Allow zero
-length strings during interpreter buffer-to-string conversions. For example,
+Implemented support for zero-length buffer-to-string conversions. Allow
+zero
+length strings during interpreter buffer-to-string conversions. For
+example,
during the ToDecimalString and ToHexString operators, as well as implicit
conversions. Fiodor Suietov, ACPICA BZ 585.
Fixed two possible memory leaks in the error exit paths of
-AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are
+AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
+are
similar in that they use a stack of state objects in order to eliminate
recursion. The stack must be fully unwound and deallocated if an error
occurs. Lin Ming. ACPICA BZ 383.
-Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global
+Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
+global
ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
Moore ACPICA BZ 442.
Removed the obsolete version number in module headers. Removed the
-"$Revision" number that appeared in each module header. This version number
-was useful under SourceSafe and CVS, but has no meaning under git. It is not
+"$Revision" number that appeared in each module header. This version
+number
+was useful under SourceSafe and CVS, but has no meaning under git. It is
+not
only incorrect, it could also be misleading.
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
+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: 79.7K Code, 16.4K Data, 96.1K Total
Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
@@ -1977,47 +5090,61 @@
29 August 2008. Summary of changes for version 20080829:
1) ACPI CA Core Subsystem:
Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
-Reference. Changes include the elimination of cheating on the Object field
+Reference. Changes include the elimination of cheating on the Object
+field
for the DdbHandle subtype, addition of a reference class field to
-differentiate the various reference types (instead of an AML opcode), and the
+differentiate the various reference types (instead of an AML opcode), and
+the
cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
Reduce an error to a warning for an incorrect method argument count.
Previously aborted with an error if too few arguments were passed to a
-control method via the external ACPICA interface. Now issue a warning instead
-and continue. Handles the case where the method inadvertently declares too
-many arguments, but does not actually use the extra ones. Applies mainly to
+control method via the external ACPICA interface. Now issue a warning
+instead
+and continue. Handles the case where the method inadvertently declares
+too
+many arguments, but does not actually use the extra ones. Applies mainly
+to
the predefined methods. Lin Ming. Linux BZ 11032.
-Disallow the evaluation of named object types with no intrinsic value. Return
-AE_TYPE for objects that have no value and therefore evaluation is undefined:
-Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of
-these types were allowed, but an exception would be generated at some point
+Disallow the evaluation of named object types with no intrinsic value.
+Return
+AE_TYPE for objects that have no value and therefore evaluation is
+undefined:
+Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
+of
+these types were allowed, but an exception would be generated at some
+point
during the evaluation. Now, the error is generated up front.
Fixed a possible memory leak in the AcpiNsGetExternalPathname function
(nsnames.c). Fixes a leak in the error exit path.
-Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug
-levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION
+Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
+debug
+levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
+ACPI_EXCEPTION
interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
ACPI_LV_EVENTS.
Removed obsolete and/or unused exception codes from the acexcep.h header.
-There is the possibility that certain device drivers may be affected if they
+There is the possibility that certain device drivers may be affected if
+they
use any of these exceptions.
-The ACPICA documentation has been added to the public git source tree, under
+The ACPICA documentation has been added to the public git source tree,
+under
acpica/documents. Included are the ACPICA programmer reference, the iASL
compiler reference, and the changes.txt release logfile.
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
+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: 79.7K Code, 16.4K Data, 96.1K Total
Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
@@ -2029,62 +5156,82 @@
Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
defines _SCP with 3 arguments. Previous versions defined it with only 1
argument. iASL now allows both definitions.
-iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero-
+iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
+zero-
length subtables when disassembling ACPI tables. Also fixed a couple of
-errors where a full 16-bit table type field was not extracted from the input
+errors where a full 16-bit table type field was not extracted from the
+input
properly.
acpisrc: Improve comment counting mechanism for generating source code
-statistics. Count first and last lines of multi-line comments as whitespace,
-not comment lines. Handle Linux legal header in addition to standard acpica
+statistics. Count first and last lines of multi-line comments as
+whitespace,
+not comment lines. Handle Linux legal header in addition to standard
+acpica
header.
----------------------------------------
29 July 2008. Summary of changes for version 20080729:
1) ACPI CA Core Subsystem:
Fix a possible deadlock in the GPE dispatch. Remove call to
-AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt
-to acquire the GPE lock but can deadlock since the GPE lock is already held
-at dispatch time. This code was introduced in version 20060831 as a response
+AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
+attempt
+to acquire the GPE lock but can deadlock since the GPE lock is already
+held
+at dispatch time. This code was introduced in version 20060831 as a
+response
to Linux BZ 6881 and has since been removed from Linux.
-Add a function to dereference returned reference objects. Examines the return
-object from a call to AcpiEvaluateObject. Any Index or RefOf references are
-automatically dereferenced in an attempt to return something useful (these
-reference types cannot be converted into an external ACPI_OBJECT.) Provides
+Add a function to dereference returned reference objects. Examines the
+return
+object from a call to AcpiEvaluateObject. Any Index or RefOf references
+are
+automatically dereferenced in an attempt to return something useful
+(these
+reference types cannot be converted into an external ACPI_OBJECT.)
+Provides
MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
subtables for the MADT and one new subtable for the SRAT. Includes
-disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC
+disassembler and AcpiSrc support. Data from the Intel 64 Architecture
+x2APIC
Specification, June 2008.
-Additional error checking for pathname utilities. Add error check after all
+Additional error checking for pathname utilities. Add error check after
+all
calls to AcpiNsGetPathnameLength. Add status return from
-AcpiNsBuildExternalPath and check after all calls. Add parameter validation
+AcpiNsBuildExternalPath and check after all calls. Add parameter
+validation
to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
-Return status from the global init function AcpiUtGlobalInitialize. This is
-used by both the kernel subsystem and the utilities such as iASL compiler.
-The function could possibly fail when the caches are initialized. Yang Yi.
+Return status from the global init function AcpiUtGlobalInitialize. This
+is
+used by both the kernel subsystem and the utilities such as iASL
+compiler.
+The function could possibly fail when the caches are initialized. Yang
+Yi.
Add a function to decode reference object types to strings. Created for
improved error messages.
-Improve object conversion error messages. Better error messages during object
-conversion from internal to the external ACPI_OBJECT. Used for external calls
+Improve object conversion error messages. Better error messages during
+object
+conversion from internal to the external ACPI_OBJECT. Used for external
+calls
to AcpiEvaluateObject.
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
+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: 79.6K Code, 16.2K Data, 95.8K Total
Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
@@ -2092,44 +5239,58 @@
Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
2) iASL Compiler/Disassembler and Tools:
-Debugger: fix a possible hang when evaluating non-methods. Fixes a problem
-introduced in version 20080701. If the object being evaluated (via execute
-command) is not a method, the debugger can hang while trying to obtain non-
+Debugger: fix a possible hang when evaluating non-methods. Fixes a
+problem
+introduced in version 20080701. If the object being evaluated (via
+execute
+command) is not a method, the debugger can hang while trying to obtain
+non-
existent parameters.
iASL: relax error for using reserved "_T_x" identifiers. These names can
appear in a disassembled ASL file if they were emitted by the original
compiler. Instead of issuing an error or warning and forcing the user to
manually change these names, issue a remark instead.
-iASL: error if named object created in while loop. Emit an error if any named
-object is created within a While loop. If allowed, this code will generate a
-run-time error on the second iteration of the loop when an attempt is made to
+iASL: error if named object created in while loop. Emit an error if any
+named
+object is created within a While loop. If allowed, this code will
+generate
+a
+run-time error on the second iteration of the loop when an attempt is
+made
+to
create the same named object twice. ACPICA bugzilla 730.
-iASL: Support absolute pathnames for include files. Add support for absolute
-pathnames within the Include operator. previously, only relative pathnames
+iASL: Support absolute pathnames for include files. Add support for
+absolute
+pathnames within the Include operator. previously, only relative
+pathnames
were supported.
-iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor.
+iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
+Descriptor.
The ACPI spec requires one interrupt minimum. BZ 423
iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
Handles the case for the Interrupt Resource Descriptor where
the ResourceSource argument is omitted but ResourceSourceIndex
is present. Now leave room for the Index. BZ 426
-iASL: Prevent error message if CondRefOf target does not exist. Fixes cases
+iASL: Prevent error message if CondRefOf target does not exist. Fixes
+cases
where an error message is emitted if the target does not exist. BZ 516
iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
-(get ACPI tables on Windows). This was apparently broken in version 20070919.
+(get ACPI tables on Windows). This was apparently broken in version
+20070919.
-AcpiXtract: Handle EOF while extracting data. Correctly handle the case where
+AcpiXtract: Handle EOF while extracting data. Correctly handle the case
+where
the EOF happens immediately after the last table in the input file. Print
completion message. Previously, no message was displayed in this case.
----------------------------------------
01 July 2008. Summary of changes for version 20080701:
@@ -2140,48 +5301,61 @@
source tree.
1) ACPI CA Core Subsystem:
Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
-enable bit. Now performs a read-change-write of the enable register instead
-of simply writing out the cached enable mask. This will prevent inadvertent
-enabling of GPEs if a rogue GPE is received during initialization (before GPE
+enable bit. Now performs a read-change-write of the enable register
+instead
+of simply writing out the cached enable mask. This will prevent
+inadvertent
+enabling of GPEs if a rogue GPE is received during initialization (before
+GPE
handlers are installed.)
Implemented a copy for dynamically loaded tables. Previously, dynamically
loaded tables were simply mapped - but on some machines this memory is
corrupted after suspend. Now copy the table to a local buffer. For the
OpRegion case, added checksum verify. Use the table length from the table
header, not the region length. For the Buffer case, use the table length
also. Dennis Noordsij, Bob Moore. BZ 10734
-Fixed a problem where the same ACPI table could not be dynamically loaded and
-unloaded more than once. Without this change, a table cannot be loaded again
+Fixed a problem where the same ACPI table could not be dynamically loaded
+and
+unloaded more than once. Without this change, a table cannot be loaded
+again
once it has been loaded/unloaded one time. The current mechanism does not
-unregister a table upon an unload. During a load, if the same table is found,
+unregister a table upon an unload. During a load, if the same table is
+found,
this no longer returns an exception. BZ 722
Fixed a problem where the wrong descriptor length was calculated for the
-EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag
+EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
+EndTag
are calculated as 12 bytes long, but the actual length in the internal
-descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported
+descriptor is 16 because of the round-up to 8 on the 64-bit build.
+Reported
by Linn Crosetto. BZ 728
-Fixed a possible memory leak in the Unload operator. The DdbHandle returned
-by Load() did not have its reference count decremented during unload, leading
+Fixed a possible memory leak in the Unload operator. The DdbHandle
+returned
+by Load() did not have its reference count decremented during unload,
+leading
to a memory leak. Lin Ming. BZ 727
Fixed a possible memory leak when deleting thermal/processor objects. Any
associated notify handlers (and objects) were not being deleted. Fiodor
Suietov. BZ 506
-Fixed the ordering of the ASCII names in the global mutex table to match the
-actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only.
+Fixed the ordering of the ASCII names in the global mutex table to match
+the
+actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
+only.
Vegard Nossum. BZ 726
Enhanced the AcpiGetObjectInfo interface to return the number of required
-arguments if the object is a control method. Added this call to the debugger
+arguments if the object is a control method. Added this call to the
+debugger
so the proper number of default arguments are passed to a method. This
prevents a warning when executing methods from AcpiExec.
Added a check for an invalid handle in AcpiGetObjectInfo. Return
AE_BAD_PARAMETER if input handle is invalid. BZ 474
@@ -2188,11 +5362,12 @@
Fixed an extraneous warning from exconfig.c on the 64-bit build.
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
+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: 79.3K Code, 16.2K Data, 95.5K Total
Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
@@ -2203,74 +5378,97 @@
2) iASL Compiler/Disassembler and Tools:
iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
resource descriptor names.
-iASL: Detect invalid ASCII characters in input (windows version). Removed the
+iASL: Detect invalid ASCII characters in input (windows version). Removed
+the
"-CF" flag from the flex compile, enables correct detection of non-ASCII
characters in the input. BZ 441
-iASL: Eliminate warning when result of LoadTable is not used. Eliminate the
+iASL: Eliminate warning when result of LoadTable is not used. Eliminate
+the
"result of operation not used" warning when the DDB handle returned from
LoadTable is not used. The warning is not needed. BZ 590
-AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to
-pass address of table to the AML. Added option to disable OpRegion simulation
-to allow creation of an OpRegion with a real address that was passed to _CFG.
-All of this allows testing of the Load and Unload operators from AcpiExec.
+AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
+method
+to
+pass address of table to the AML. Added option to disable OpRegion
+simulation
+to allow creation of an OpRegion with a real address that was passed to
+_CFG.
+All of this allows testing of the Load and Unload operators from
+AcpiExec.
-Debugger: update tables command for unloaded tables. Handle unloaded tables
+Debugger: update tables command for unloaded tables. Handle unloaded
+tables
and use the standard table header output routine.
----------------------------------------
09 June 2008. Summary of changes for version 20080609:
1) ACPI CA Core Subsystem:
-Implemented a workaround for reversed _PRT entries. A significant number of
+Implemented a workaround for reversed _PRT entries. A significant number
+of
BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
-change dynamically detects and repairs this problem. Provides compatibility
+change dynamically detects and repairs this problem. Provides
+compatibility
with MS ACPI. BZ 6859
Simplified the internal ACPI hardware interfaces to eliminate the locking
flag parameter from Register Read/Write. Added a new external interface,
AcpiGetRegisterUnlocked.
-Fixed a problem where the invocation of a GPE control method could hang. This
+Fixed a problem where the invocation of a GPE control method could hang.
+This
was a regression introduced in 20080514. The new method argument count
validation mechanism can enter an infinite loop when a GPE method is
-dispatched. Problem fixed by removing the obsolete code that passed GPE block
-information to the notify handler via the control method parameter pointer.
+dispatched. Problem fixed by removing the obsolete code that passed GPE
+block
+information to the notify handler via the control method parameter
+pointer.
-Fixed a problem where the _SST execution status was incorrectly returned to
-the caller of AcpiEnterSleepStatePrep. This was a regression introduced in
+Fixed a problem where the _SST execution status was incorrectly returned
+to
+the caller of AcpiEnterSleepStatePrep. This was a regression introduced
+in
20080514. _SST is optional and a NOT_FOUND exception should never be
returned. BZ 716
-Fixed a problem where a deleted object could be accessed from within the AML
-parser. This was a regression introduced in version 20080123 as a fix for the
+Fixed a problem where a deleted object could be accessed from within the
+AML
+parser. This was a regression introduced in version 20080123 as a fix for
+the
Unload operator. Lin Ming. BZ 10669
-Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands
+Cleaned up the debug operand dump mechanism. Eliminated unnecessary
+operands
and eliminated the use of a negative index in a loop. Operands are now
-displayed in the correct order, not backwards. This also fixes a regression
+displayed in the correct order, not backwards. This also fixes a
+regression
introduced in 20080514 on 64-bit systems where the elimination of
-ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715
+ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
+715
-Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit
+Fixed a possible memory leak in EvPciConfigRegionSetup where the error
+exit
path did not delete a locally allocated structure.
Updated definitions for the DMAR and SRAT tables to synchronize with the
current specifications. Includes disassembler support.
Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
-loop termination value was used. Loop terminated on iteration early, missing
+loop termination value was used. Loop terminated on iteration early,
+missing
one mutex. Linn Crosetto
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
+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: 79.5K Code, 16.2K Data, 95.7K Total
Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
@@ -2292,65 +5490,87 @@
1) ACPI CA Core Subsystem:
Fixed a problem where GPEs were enabled too early during the ACPICA
initialization. This could lead to "handler not installed" errors on some
-machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This
-ensures that all operation regions and devices throughout the namespace have
+machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
+This
+ensures that all operation regions and devices throughout the namespace
+have
been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
Implemented a change to the enter sleep code. Moved execution of the _GTS
-method to just before setting sleep enable bit. The execution was moved from
+method to just before setting sleep enable bit. The execution was moved
+from
AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
immediately before the SLP_EN bit is set, as per the ACPI specification.
Luming Yu, BZ 1653.
-Implemented a fix to disable unknown GPEs (2nd version). Now always disable
+Implemented a fix to disable unknown GPEs (2nd version). Now always
+disable
the GPE, even if ACPICA thinks that that it is already disabled. It is
-possible that the AML or some other code has enabled the GPE unbeknownst to
+possible that the AML or some other code has enabled the GPE unbeknownst
+to
the ACPICA code.
-Fixed a problem with the Field operator where zero-length fields would return
-an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL
+Fixed a problem with the Field operator where zero-length fields would
+return
+an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
+ASL
field declarations in Field(), BankField(), and IndexField(). BZ 10606.
-Implemented a fix for the Load operator, now load the table at the namespace
-root. This reverts a change introduced in version 20071019. The table is now
+Implemented a fix for the Load operator, now load the table at the
+namespace
+root. This reverts a change introduced in version 20071019. The table is
+now
loaded at the namespace root even though this goes against the ACPI
-specification. This provides compatibility with other ACPI implementations.
-The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming.
+specification. This provides compatibility with other ACPI
+implementations.
+The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
+Ming.
-Fixed a problem where ACPICA would not Load() tables with unusual signatures.
+Fixed a problem where ACPICA would not Load() tables with unusual
+signatures.
Now ignore ACPI table signature for Load() operator. Only "SSDT" is
acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
-Therefore, signature validation is worthless. Apparently MS ACPI accepts such
+Therefore, signature validation is worthless. Apparently MS ACPI accepts
+such
signatures, ACPICA must be compatible. BZ 10454.
-Fixed a possible negative array index in AcpiUtValidateException. Added NULL
-fields to the exception string arrays to eliminate a -1 subtraction on the
+Fixed a possible negative array index in AcpiUtValidateException. Added
+NULL
+fields to the exception string arrays to eliminate a -1 subtraction on
+the
SubStatus field.
Updated the debug tracking macros to reduce overall code and data size.
Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
instead of pointers to static strings. Jan Beulich and Bob Moore.
Implemented argument count checking in control method invocation via
-AcpiEvaluateObject. Now emit an error if too few arguments, warning if too
-many. This applies only to extern programmatic control method execution, not
+AcpiEvaluateObject. Now emit an error if too few arguments, warning if
+too
+many. This applies only to extern programmatic control method execution,
+not
method-to-method calls within the AML. Lin Ming.
-Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no
-longer needed, especially with the removal of 16-bit support. It was replaced
-mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on
+Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
+no
+longer needed, especially with the removal of 16-bit support. It was
+replaced
+mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
+bit
+on
32/64-bit platforms is required.
Added the C const qualifier for appropriate string constants -- mostly
MODULE_NAME and printf format strings. Jan Beulich.
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
+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: 80.0K Code, 17.4K Data, 97.4K Total
Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
@@ -2358,68 +5578,91 @@
Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
2) iASL Compiler/Disassembler and Tools:
-Implemented ACPI table revision ID validation in the disassembler. Zero is
-always invalid. For DSDTs, the ID controls the interpreter integer width. 1
+Implemented ACPI table revision ID validation in the disassembler. Zero
+is
+always invalid. For DSDTs, the ID controls the interpreter integer width.
+1
means 32-bit and this is unusual. 2 or greater is 64-bit.
----------------------------------------
21 March 2008. Summary of changes for version 20080321:
1) ACPI CA Core Subsystem:
Implemented an additional change to the GPE support in order to suppress
-spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently
-disable incoming GPEs that are neither enabled nor disabled -- meaning that
-the GPE is unknown to the system. This should prevent future interrupt floods
+spurious or stray GPEs. The AcpiEvDisableGpe function will now
+permanently
+disable incoming GPEs that are neither enabled nor disabled -- meaning
+that
+the GPE is unknown to the system. This should prevent future interrupt
+floods
from that GPE. BZ 6217 (Zhang Rui)
Fixed a problem where NULL package elements were not returned to the
AcpiEvaluateObject interface correctly. The element was simply ignored
-instead of returning a NULL ACPI_OBJECT package element, potentially causing
-a buffer overflow and/or confusing the caller who expected a fixed number of
+instead of returning a NULL ACPI_OBJECT package element, potentially
+causing
+a buffer overflow and/or confusing the caller who expected a fixed number
+of
elements. BZ 10132 (Lin Ming, Bob Moore)
-Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword,
-Qword), Field, BankField, and IndexField operators when invoked from inside
-an executing control method. In this case, these operators created namespace
+Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
+Dword,
+Qword), Field, BankField, and IndexField operators when invoked from
+inside
+an executing control method. In this case, these operators created
+namespace
nodes that were incorrectly left marked as permanent nodes instead of
temporary nodes. This could cause a problem if there is race condition
-between an exiting control method and a running namespace walk. (Reported by
+between an exiting control method and a running namespace walk. (Reported
+by
Linn Crosetto)
Fixed a problem where the CreateField and CreateXXXField operators would
-incorrectly allow duplicate names (the name of the field) with no exception
+incorrectly allow duplicate names (the name of the field) with no
+exception
generated.
-Implemented several changes for Notify handling. Added support for new Notify
+Implemented several changes for Notify handling. Added support for new
+Notify
values (ACPI 2.0+) and improved the Notify debug output. Notify on
-PowerResource objects is no longer allowed, as per the ACPI specification.
+PowerResource objects is no longer allowed, as per the ACPI
+specification.
(Bob Moore, Zhang Rui)
-All Reference Objects returned via the AcpiEvaluateObject interface are now
-marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for
-NULL objects - either NULL package elements or unresolved named references.
+All Reference Objects returned via the AcpiEvaluateObject interface are
+now
+marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
+for
+NULL objects - either NULL package elements or unresolved named
+references.
-Fixed a problem where an extraneous debug message was produced for package
+Fixed a problem where an extraneous debug message was produced for
+package
objects (when debugging enabled). The message "Package List length larger
-than NumElements count" is now produced in the correct case, and is now an
+than NumElements count" is now produced in the correct case, and is now
+an
error message rather than a debug message. Added a debug message for the
-opposite case, where NumElements is larger than the Package List (the package
+opposite case, where NumElements is larger than the Package List (the
+package
will be padded out with NULL elements as per the ACPI spec.)
-Implemented several improvements for the output of the ASL "Debug" object to
+Implemented several improvements for the output of the ASL "Debug" object
+to
clarify and keep all data for a given object on one output line.
-Fixed two size calculation issues with the variable-length Start Dependent
+Fixed two size calculation issues with the variable-length Start
+Dependent
resource descriptor.
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
+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: 79.7K Code, 17.3K Data, 97.0K Total
Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
@@ -2427,50 +5670,64 @@
Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2) iASL Compiler/Disassembler and Tools:
-Fixed a problem with the use of the Switch operator where execution of the
+Fixed a problem with the use of the Switch operator where execution of
+the
containing method by multiple concurrent threads could cause an
AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
actual Switch opcode, it must be simulated with local named temporary
-variables and if/else pairs. The solution chosen was to mark any method that
-uses Switch as Serialized, thus preventing multiple thread entries. BZ 469.
+variables and if/else pairs. The solution chosen was to mark any method
+that
+uses Switch as Serialized, thus preventing multiple thread entries. BZ
+469.
----------------------------------------
13 February 2008. Summary of changes for version 20080213:
1) ACPI CA Core Subsystem:
-Implemented another MS compatibility design change for GPE/Notify handling.
-GPEs are now cleared/enabled asynchronously to allow all pending notifies to
+Implemented another MS compatibility design change for GPE/Notify
+handling.
+GPEs are now cleared/enabled asynchronously to allow all pending notifies
+to
complete first. It is expected that the OSL will queue the enable request
-behind all pending notify requests (may require changes to the local host OSL
+behind all pending notify requests (may require changes to the local host
+OSL
in AcpiOsExecute). Alexey Starikovskiy.
Fixed a problem where buffer and package objects passed as arguments to a
-control method via the external AcpiEvaluateObject interface could cause an
+control method via the external AcpiEvaluateObject interface could cause
+an
AE_AML_INTERNAL exception depending on the order and type of operators
executed by the target control method.
Fixed a problem where resource descriptor size optimization could cause a
-problem when a _CRS resource template is passed to a _SRS method. The _SRS
+problem when a _CRS resource template is passed to a _SRS method. The
+_SRS
resource template must use the same descriptors (with the same size) as
-returned from _CRS. This change affects the following resource descriptors:
-IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487)
+returned from _CRS. This change affects the following resource
+descriptors:
+IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
+9487)
-Fixed a problem where a CopyObject to RegionField, BankField, and IndexField
-objects did not perform an implicit conversion as it should. These types must
-retain their initial type permanently as per the ACPI specification. However,
+Fixed a problem where a CopyObject to RegionField, BankField, and
+IndexField
+objects did not perform an implicit conversion as it should. These types
+must
+retain their initial type permanently as per the ACPI specification.
+However,
a CopyObject to all other object types should not perform an implicit
conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
Fixed a problem with the AcpiGetDevices interface where the mechanism to
match device CIDs did not examine the entire list of available CIDs, but
instead aborted on the first non-matching CID. Andrew Patterson.
-Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was
+Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
+was
inadvertently changed to return a 16-bit value instead of a 32-bit value,
truncating the upper dword of a 64-bit value. This macro is only used to
display debug output, so no incorrect calculations were made. Also,
reimplemented the macro so that a 64-bit shift is not performed by
inefficient compilers.
@@ -2478,11 +5735,12 @@
Added missing va_end statements that should correspond with each va_start
statement.
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
+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: 79.5K Code, 17.2K Data, 96.7K Total
Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
@@ -2504,43 +5762,60 @@
Added the 2008 copyright to all module headers and signons. This affects
virtually every file in the ACPICA core subsystem, the iASL compiler, and
the tools/utilities.
-Fixed a problem with the SizeOf operator when used with Package and Buffer
-objects. These objects have deferred execution for some arguments, and the
-execution is now completed before the SizeOf is executed. This problem caused
-unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ
+Fixed a problem with the SizeOf operator when used with Package and
+Buffer
+objects. These objects have deferred execution for some arguments, and
+the
+execution is now completed before the SizeOf is executed. This problem
+caused
+unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
+BZ
9558
-Implemented an enhancement to the interpreter "slack mode". In the absence of
-an explicit return or an implicitly returned object from the last executed
-opcode, a control method will now implicitly return an integer of value 0 for
+Implemented an enhancement to the interpreter "slack mode". In the
+absence
+of
+an explicit return or an implicitly returned object from the last
+executed
+opcode, a control method will now implicitly return an integer of value 0
+for
Microsoft compatibility. (Lin Ming) BZ 392
-Fixed a problem with the Load operator where an exception was not returned in
+Fixed a problem with the Load operator where an exception was not
+returned
+in
the case where the table is already loaded. (Lin Ming) BZ 463
-Implemented support for the use of DDBHandles as an Indexed Reference, as per
+Implemented support for the use of DDBHandles as an Indexed Reference, as
+per
the ACPI spec. (Lin Ming) BZ 486
-Implemented support for UserTerm (Method invocation) for the Unload operator
+Implemented support for UserTerm (Method invocation) for the Unload
+operator
as per the ACPI spec. (Lin Ming) BZ 580
-Fixed a problem with the LoadTable operator where the OemId and OemTableId
-input strings could cause unexpected failures if they were shorter than the
+Fixed a problem with the LoadTable operator where the OemId and
+OemTableId
+input strings could cause unexpected failures if they were shorter than
+the
maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
-Implemented support for UserTerm (Method invocation) for the Unload operator
+Implemented support for UserTerm (Method invocation) for the Unload
+operator
as per the ACPI spec. (Lin Ming) BZ 580
-Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST,
+Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
+HEST,
IBFT, UEFI, WDAT. Disassembler support is forthcoming.
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
+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: 79.3K Code, 17.2K Data, 96.5K Total
Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
@@ -2548,65 +5823,83 @@
Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2) iASL Compiler/Disassembler and Tools:
-Implemented support in the disassembler for checksum validation on incoming
-binary DSDTs and SSDTs. If incorrect, a message is displayed within the table
+Implemented support in the disassembler for checksum validation on
+incoming
+binary DSDTs and SSDTs. If incorrect, a message is displayed within the
+table
header dump at the start of the disassembly.
-Implemented additional debugging information in the namespace listing file
-created during compilation. In addition to the namespace hierarchy, the full
+Implemented additional debugging information in the namespace listing
+file
+created during compilation. In addition to the namespace hierarchy, the
+full
pathname to each namespace object is displayed.
-Fixed a problem with the disassembler where invalid ACPI tables could cause
+Fixed a problem with the disassembler where invalid ACPI tables could
+cause
faults or infinite loops.
Fixed an unexpected parse error when using the optional "parameter types"
list in a control method declaration. (Lin Ming) BZ 397
-Fixed a problem where two External declarations with the same name did not
+Fixed a problem where two External declarations with the same name did
+not
cause an error (Lin Ming) BZ 509
Implemented support for full TermArgs (adding Argx, Localx and method
-invocation) for the ParameterData parameter to the LoadTable operator. (Lin
+invocation) for the ParameterData parameter to the LoadTable operator.
+(Lin
Ming) BZ 583,587
----------------------------------------
19 December 2007. Summary of changes for version 20071219:
1) ACPI CA Core Subsystem:
Implemented full support for deferred execution for the TermArg string
arguments for DataTableRegion. This enables forward references and full
-operand resolution for the three string arguments. Similar to OperationRegion
+operand resolution for the three string arguments. Similar to
+OperationRegion
deferred argument execution.) Lin Ming. BZ 430
-Implemented full argument resolution support for the BankValue argument to
-BankField. Previously, only constants were supported, now any TermArg may be
+Implemented full argument resolution support for the BankValue argument
+to
+BankField. Previously, only constants were supported, now any TermArg may
+be
used. Lin Ming BZ 387, 393
Fixed a problem with AcpiGetDevices where the search of a branch of the
device tree could be terminated prematurely. In accordance with the ACPI
-specification, the search down the current branch is terminated if a device
-is both not present and not functional (instead of just not present.) Yakui
+specification, the search down the current branch is terminated if a
+device
+is both not present and not functional (instead of just not present.)
+Yakui
Zhao.
-Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if
-the underlying AML code changed the GPE enable registers. Now, any unknown
-incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled
+Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
+if
+the underlying AML code changed the GPE enable registers. Now, any
+unknown
+incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
+disabled
instead of simply ignored. Rui Zhang.
-Fixed a problem with Index Fields where the Index register was incorrectly
+Fixed a problem with Index Fields where the Index register was
+incorrectly
limited to a maximum of 32 bits. Now any size may be used.
-Fixed a couple memory leaks associated with "implicit return" objects when
+Fixed a couple memory leaks associated with "implicit return" objects
+when
the AML Interpreter slack mode is enabled. Lin Ming BZ 349
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
+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: 79.0K Code, 17.2K Data, 96.2K Total
Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
@@ -2619,41 +5912,53 @@
1) ACPI CA Core Subsystem:
Implemented event counters for each of the Fixed Events, the ACPI SCI
(interrupt) itself, and control methods executed. Named
-AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These
+AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
+These
should be useful for debugging and statistics.
Implemented a new external interface, AcpiGetStatistics, to retrieve the
contents of the various event counters. Returns the current values for
AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
-AcpiMethodCount. The interface can be expanded in the future if new counters
-are added. Device drivers should use this interface rather than access the
+AcpiMethodCount. The interface can be expanded in the future if new
+counters
+are added. Device drivers should use this interface rather than access
+the
counters directly.
-Fixed a problem with the FromBCD and ToBCD operators. With some compilers,
-the ShortDivide function worked incorrectly, causing problems with the BCD
+Fixed a problem with the FromBCD and ToBCD operators. With some
+compilers,
+the ShortDivide function worked incorrectly, causing problems with the
+BCD
functions with large input values. A truncation from 64-bit to 32-bit
inadvertently occurred. Internal BZ 435. Lin Ming
-Fixed a problem with Index references passed as method arguments. References
-passed as arguments to control methods were dereferenced immediately (before
-control was passed to the called method). The references are now correctly
+Fixed a problem with Index references passed as method arguments.
+References
+passed as arguments to control methods were dereferenced immediately
+(before
+control was passed to the called method). The references are now
+correctly
passed directly to the called method. BZ 5389. Lin Ming
-Fixed a problem with CopyObject used in conjunction with the Index operator.
-The reference was incorrectly dereferenced before the copy. The reference is
+Fixed a problem with CopyObject used in conjunction with the Index
+operator.
+The reference was incorrectly dereferenced before the copy. The reference
+is
now correctly copied. BZ 5391. Lin Ming
-Fixed a problem with Control Method references within Package objects. These
+Fixed a problem with Control Method references within Package objects.
+These
references are now correctly generated. This completes the package
construction overhaul that began in version 20071019.
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
+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: 78.8K Code, 17.2K Data, 96.0K Total
Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
@@ -2666,42 +5971,50 @@
The AcpiExec utility now installs handlers for all of the predefined
Operation Region types. New types supported are: PCI_Config, CMOS, and
PCIBARTarget.
-Fixed a problem with the 64-bit version of AcpiExec where the extended (64-
+Fixed a problem with the 64-bit version of AcpiExec where the extended
+(64-
bit) address fields for the DSDT and FACS within the FADT were not being
-used, causing truncation of the upper 32-bits of these addresses. Lin Ming
+used, causing truncation of the upper 32-bits of these addresses. Lin
+Ming
and Bob Moore
----------------------------------------
19 October 2007. Summary of changes for version 20071019:
1) ACPI CA Core Subsystem:
Fixed a problem with the Alias operator when the target of the alias is a
-named ASL operator that opens a new scope -- Scope, Device, PowerResource,
+named ASL operator that opens a new scope -- Scope, Device,
+PowerResource,
Processor, and ThermalZone. In these cases, any children of the original
-operator could not be accessed via the alias, potentially causing unexpected
+operator could not be accessed via the alias, potentially causing
+unexpected
AE_NOT_FOUND exceptions. (BZ 9067)
Fixed a problem with the Package operator where all named references were
-created as object references and left otherwise unresolved. According to the
-ACPI specification, a Package can only contain Data Objects or references to
+created as object references and left otherwise unresolved. According to
+the
+ACPI specification, a Package can only contain Data Objects or references
+to
control methods. The implication is that named references to Data Objects
(Integer, Buffer, String, Package, BufferField, Field) should be resolved
immediately upon package creation. This is the approach taken with this
change. References to all other named objects (Methods, Devices, Scopes,
etc.) are all now properly created as reference objects. (BZ 5328)
Reverted a change to Notify handling that was introduced in version
20070508. This version changed the Notify handling from asynchronous to
-fully synchronous (Device driver Notify handling with respect to the Notify
+fully synchronous (Device driver Notify handling with respect to the
+Notify
ASL operator). It was found that this change caused more problems than it
solved and was removed by most users.
-Fixed a problem with the Increment and Decrement operators where the type of
+Fixed a problem with the Increment and Decrement operators where the type
+of
the target object could be unexpectedly and incorrectly changed. (BZ 353)
Lin Ming.
Fixed a problem with the Load and LoadTable operators where the table
location within the namespace was ignored. Instead, the table was always
@@ -2708,23 +6021,28 @@
loaded into the root or current scope. Lin Ming.
Fixed a problem with the Load operator when loading a table from a buffer
object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
-Fixed a problem with the Debug object where a store of a DdbHandle reference
+Fixed a problem with the Debug object where a store of a DdbHandle
+reference
object to the Debug object could cause a fault.
-Added a table checksum verification for the Load operator, in the case where
+Added a table checksum verification for the Load operator, in the case
+where
the load is from a buffer. (BZ 578).
-Implemented additional parameter validation for the LoadTable operator. The
-length of the input strings SignatureString, OemIdString, and OemTableId are
+Implemented additional parameter validation for the LoadTable operator.
+The
+length of the input strings SignatureString, OemIdString, and OemTableId
+are
now checked for maximum lengths. (BZ 582) Lin Ming.
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
+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: 78.5K Code, 17.1K Data, 95.6K Total
Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
@@ -2743,11 +6061,12 @@
19 September 2007. Summary of changes for version 20070919:
1) ACPI CA Core Subsystem:
Designed and implemented new external interfaces to install and remove
-handlers for ACPI table-related events. Current events that are defined are
+handlers for ACPI table-related events. Current events that are defined
+are
LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
@@ -2758,11 +6077,12 @@
Processor, PowerResource) can be not found if they are declared and
referenced from within the same control method (Lin Ming) BZ 341
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
+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: 78.3K Code, 17.0K Data, 95.3K Total
Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
@@ -2771,52 +6091,67 @@
Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2) iASL Compiler/Disassembler:
-Implemented support to allow multiple files to be compiled/disassembled in a
-single invocation. This includes command line wildcard support for both the
+Implemented support to allow multiple files to be compiled/disassembled
+in
+a
+single invocation. This includes command line wildcard support for both
+the
Windows and Unix versions of the compiler. This feature simplifies the
-disassembly and compilation of multiple ACPI tables in a single directory.
+disassembly and compilation of multiple ACPI tables in a single
+directory.
----------------------------------------
08 May 2007. Summary of changes for version 20070508:
1) ACPI CA Core Subsystem:
-Implemented a Microsoft compatibility design change for the handling of the
+Implemented a Microsoft compatibility design change for the handling of
+the
Notify AML operator. Previously, notify handlers were dispatched and
executed completely asynchronously in a deferred thread. The new design
-still executes the notify handlers in a different thread, but the original
-thread that executed the Notify() now waits at a synchronization point for
-the notify handler to complete. Some machines depend on a synchronous Notify
+still executes the notify handlers in a different thread, but the
+original
+thread that executed the Notify() now waits at a synchronization point
+for
+the notify handler to complete. Some machines depend on a synchronous
+Notify
operator in order to operate correctly.
Implemented support to allow Package objects to be passed as method
arguments to the external AcpiEvaluateObject interface. Previously, this
would return the AE_NOT_IMPLEMENTED exception. This feature had not been
implemented since there were no reserved control methods that required it
until recently.
-Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that
+Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
+that
contained invalid non-zero values in reserved fields could cause later
-failures because these fields have meaning in later revisions of the FADT.
-For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields
+failures because these fields have meaning in later revisions of the
+FADT.
+For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
+fields
are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
-Fixed a problem where the Global Lock handle was not properly updated if a
-thread that acquired the Global Lock via executing AML code then attempted
-to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe
+Fixed a problem where the Global Lock handle was not properly updated if
+a
+thread that acquired the Global Lock via executing AML code then
+attempted
+to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
+Joe
Liu.
Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
could be corrupted if the interrupt being removed was at the head of the
list. Reported by Linn Crosetto.
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
+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: 78.0K Code, 17.1K Data, 95.1K Total
Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
@@ -2830,50 +6165,65 @@
1) ACPI CA Core Subsystem:
Implemented a change to the order of interpretation and evaluation of AML
operand objects within the AML interpreter. The interpreter now evaluates
operands in the order that they appear in the AML stream (and the
-corresponding ASL code), instead of in the reverse order (after the entire
-operand list has been parsed). The previous behavior caused several subtle
+corresponding ASL code), instead of in the reverse order (after the
+entire
+operand list has been parsed). The previous behavior caused several
+subtle
incompatibilities with the Microsoft AML interpreter as well as being
somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
-Implemented a change to the ACPI Global Lock support. All interfaces to the
+Implemented a change to the ACPI Global Lock support. All interfaces to
+the
global lock now allow the same thread to acquire the lock multiple times.
-This affects the AcpiAcquireGlobalLock external interface to the global lock
+This affects the AcpiAcquireGlobalLock external interface to the global
+lock
as well as the internal use of the global lock to support AML fields -- a
-control method that is holding the global lock can now simultaneously access
-AML fields that require global lock protection. Previously, in both cases,
-this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to
+control method that is holding the global lock can now simultaneously
+access
+AML fields that require global lock protection. Previously, in both
+cases,
+this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
+to
AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
-Controller. There is no change to the behavior of the AML Acquire operator,
+Controller. There is no change to the behavior of the AML Acquire
+operator,
as this can already be used to acquire a mutex multiple times by the same
thread. BZ 8066. With assistance from Alexey Starikovskiy.
Fixed a problem where invalid objects could be referenced in the AML
-Interpreter after error conditions. During operand evaluation, ensure that
+Interpreter after error conditions. During operand evaluation, ensure
+that
the internal "Return Object" field is cleared on error and only valid
-pointers are stored there. Caused occasional access to deleted objects that
+pointers are stored there. Caused occasional access to deleted objects
+that
resulted in "large reference count" warning messages. Valery Podrezov.
-Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on
+Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
+on
deeply nested control method invocations. BZ 7873, local BZ 487. Valery
Podrezov.
Fixed an internal problem with the handling of result objects on the
interpreter result stack. BZ 7872. Valery Podrezov.
-Removed obsolete code that handled the case where AML_NAME_OP is the target
+Removed obsolete code that handled the case where AML_NAME_OP is the
+target
of a reference (Reference.Opcode). This code was no longer necessary. BZ
7874. Valery Podrezov.
-Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a
+Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
+was
+a
remnant from the previously discontinued 16-bit support.
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
+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: 78.0K Code, 17.1K Data, 95.1K Total
Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
@@ -2889,16 +6239,18 @@
Added the 2007 copyright to all module headers and signons. This affects
virtually every file in the ACPICA core subsystem, the iASL compiler, and
the utilities.
Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
-during a table load. A bad pointer was passed in the case where the DSDT is
+during a table load. A bad pointer was passed in the case where the DSDT
+is
overridden, causing a fault in this case.
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
+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: 78.0K Code, 17.1K Data, 95.1K Total
Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
@@ -2909,32 +6261,39 @@
----------------------------------------
15 December 2006. Summary of changes for version 20061215:
1) ACPI CA Core Subsystem:
-Support for 16-bit ACPICA has been completely removed since it is no longer
+Support for 16-bit ACPICA has been completely removed since it is no
+longer
necessary and it clutters the code. All 16-bit macros, types, and
-conditional compiles have been removed, cleaning up and simplifying the code
+conditional compiles have been removed, cleaning up and simplifying the
+code
across the entire subsystem. DOS support is no longer needed since the
bootable Linux firmware kit is now available.
The handler for the Global Lock is now removed during AcpiTerminate to
enable a clean subsystem restart, via the implementation of the
AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
HP)
-Implemented enhancements to the multithreading support within the debugger
-to enable improved multithreading debugging and evaluation of the subsystem.
+Implemented enhancements to the multithreading support within the
+debugger
+to enable improved multithreading debugging and evaluation of the
+subsystem.
(Valery Podrezov)
-Debugger: Enhanced the Statistics/Memory command to emit the total (maximum)
-memory used during the execution, as well as the maximum memory consumed by
+Debugger: Enhanced the Statistics/Memory command to emit the total
+(maximum)
+memory used during the execution, as well as the maximum memory consumed
+by
each of the various object types. (Valery Podrezov)
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
+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, 17.0K Data, 94.9K Total
Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
@@ -2951,34 +6310,40 @@
----------------------------------------
09 November 2006. Summary of changes for version 20061109:
1) ACPI CA Core Subsystem:
-Optimized the Load ASL operator in the case where the source operand is an
+Optimized the Load ASL operator in the case where the source operand is
+an
operation region. Simply map the operation region memory, instead of
performing a bytewise read. (Region must be of type SystemMemory, see
below.)
Fixed the Load ASL operator for the case where the source operand is a
-region field. A buffer object is also allowed as the source operand. BZ 480
+region field. A buffer object is also allowed as the source operand. BZ
+480
-Fixed a problem where the Load ASL operator allowed the source operand to be
+Fixed a problem where the Load ASL operator allowed the source operand to
+be
an operation region of any type. It is now restricted to regions of type
SystemMemory, as per the ACPI specification. BZ 481
Additional cleanup and optimizations for the new Table Manager code.
-AcpiEnable will now fail if all of the required ACPI tables are not loaded
+AcpiEnable will now fail if all of the required ACPI tables are not
+loaded
(FADT, FACS, DSDT). BZ 477
-Added #pragma pack(8/4) to acobject.h to ensure that the structures in this
+Added #pragma pack(8/4) to acobject.h to ensure that the structures in
+this
header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
manually optimized to be aligned and will not work if it is byte-packed.
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
+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: 78.1K Code, 17.1K Data, 95.2K Total
Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
@@ -3005,37 +6370,45 @@
completely parsed and executed in a single pass. This improves overall
interpreter performance by ~25%, reduces code size, and reduces CPU stack
use. (Valery Podrezov + interpreter changes in version 20051202 that
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
+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
+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
+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
+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.
+subfunctions in order to reduce CPU stack use and improve
+maintainability.
(Mikhail Kouzmich)
-AcpiGetHandle: Fix for parameter validation to detect invalid combinations
+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
+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
@@ -3043,11 +6416,12 @@
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
+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:
@@ -3057,19 +6431,22 @@
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
+inadvertently created with one unit instead of zero units. (BZ 464)
+Fiodor
Suietov.
-Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during
+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
+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
@@ -3078,42 +6455,50 @@
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
+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
+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
+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
+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,
+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
+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
+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)
@@ -3120,17 +6505,22 @@
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.)
+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
+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
@@ -3139,32 +6529,37 @@
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
+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
+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
+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
+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:
@@ -3176,23 +6571,26 @@
- 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
+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
+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
+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
@@ -3209,66 +6607,83 @@
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
+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
+- 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.
+- 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
+- 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
+- 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,
+- 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
+- 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-
+- 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
+- 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
+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
+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
+- 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
+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
+- 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
@@ -3275,11 +6690,12 @@
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
+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
@@ -3297,47 +6713,60 @@
1) ACPI CA Core Subsystem:
The full source code for the ASL test suite used to validate the iASL
compiler and the ACPICA core subsystem is being released with the ACPICA
-source for the first time. The source is contained in a separate package and
-consists of over 1100 files that exercise all ASL/AML operators. The package
-should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor
+source for the first time. The source is contained in a separate package
+and
+consists of over 1100 files that exercise all ASL/AML operators. The
+package
+should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
+Fiodor
Suietov)
Completed a new design and implementation for support of the ACPI Global
Lock. On the OS side, the global lock is now treated as a standard AML
mutex. Previously, multiple OS threads could "acquire" the global lock
-simultaneously. However, this could cause the BIOS to be starved out of the
+simultaneously. However, this could cause the BIOS to be starved out of
+the
lock - especially in cases such as the Embedded Controller driver where
there is a tight coupling between the OS and the BIOS.
Implemented an optimization for the ACPI Global Lock interrupt mechanism.
The Global Lock interrupt handler no longer queues the execution of a
-separate thread to signal the global lock semaphore. Instead, the semaphore
+separate thread to signal the global lock semaphore. Instead, the
+semaphore
is signaled directly from the interrupt handler.
Implemented support within the AML interpreter for package objects that
-contain a larger AML length (package list length) than the package element
+contain a larger AML length (package list length) than the package
+element
count. In this case, the length of the package is truncated to match the
-package element count. Some BIOS code apparently modifies the package length
-on the fly, and this change supports this behavior. Provides compatibility
+package element count. Some BIOS code apparently modifies the package
+length
+on the fly, and this change supports this behavior. Provides
+compatibility
with the MS AML interpreter. (With assistance from Fiodor Suietov)
-Implemented a temporary fix for the BankValue parameter of a Bank Field to
+Implemented a temporary fix for the BankValue parameter of a Bank Field
+to
support all constant values, now including the Zero and One opcodes.
-Evaluation of this parameter must eventually be converted to a full TermArg
-evaluation. A not-implemented error is now returned (temporarily) for non-
+Evaluation of this parameter must eventually be converted to a full
+TermArg
+evaluation. A not-implemented error is now returned (temporarily) for
+non-
constant values for this parameter.
Fixed problem reports (Fiodor Suietov) integrated:
-- Fix for premature object deletion after CopyObject on Operation Region (BZ
+- Fix for premature object deletion after CopyObject on Operation Region
+(BZ
350)
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
+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, 18.0K Data, 98.7K Total
Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
@@ -3359,30 +6788,35 @@
that do not allow the initialization of address pointers within packed
structures - even though the hardware itself may support misaligned
transfers. Some of the debug data structures are packed by default to
minimize size.
-Added an error message for the case where AcpiOsGetThreadId() returns zero.
+Added an error message for the case where AcpiOsGetThreadId() returns
+zero.
A non-zero value is required by the core ACPICA code to ensure the proper
operation of AML mutexes and recursive control methods.
The DSDT is now the only ACPI table that determines whether the AML
-interpreter is in 32-bit or 64-bit mode. Not really a functional change, but
-the hooks for per-table 32/64 switching have been removed from the code. A
+interpreter is in 32-bit or 64-bit mode. Not really a functional change,
+but
+the hooks for per-table 32/64 switching have been removed from the code.
+A
clarification to the ACPI specification is forthcoming in ACPI 3.0B.
Fixed a possible leak of an OwnerID in the error path of
AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
-deletion to a single place in AcpiTbUninstallTable to correct possible leaks
+deletion to a single place in AcpiTbUninstallTable to correct possible
+leaks
when using the AcpiTbDeleteTablesByType interface (with assistance from
Lance Ortiz.)
Fixed a problem with Serialized control methods where the semaphore
associated with the method could be over-signaled after multiple method
invocations.
-Fixed two issues with the locking of the internal namespace data structure.
+Fixed two issues with the locking of the internal namespace data
+structure.
Both the Unload() operator and AcpiUnloadTable interface now lock the
namespace during the namespace deletion associated with the table unload
(with assistance from Linn Crosetto.)
Fixed problem reports (Valery Podrezov) integrated:
@@ -3389,23 +6823,27 @@
- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
Fixed problem reports (Fiodor Suietov) integrated:
- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
- On Address Space handler deletion, needless deactivation call (BZ 374)
-- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375)
-- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone
+- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
+375)
+- Possible memory leak, Notify sub-objects of Processor, Power,
+ThermalZone
(BZ 376)
- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
- Minimum Length of RSDT should be validated (BZ 379)
- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
Handler (BZ (380)
-- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded
+- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
+loaded
(BZ 381)
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
+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: 80.5K Code, 17.8K Data, 98.3K Total
Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
@@ -3427,43 +6865,57 @@
Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
allows the type to be customized to the host OS for improved efficiency
(since a spinlock is usually a very small object.)
-Implemented support for "ignored" bits in the ACPI registers. According to
+Implemented support for "ignored" bits in the ACPI registers. According
+to
the ACPI specification, these bits should be preserved when writing the
-registers via a read/modify/write cycle. There are 3 bits preserved in this
+registers via a read/modify/write cycle. There are 3 bits preserved in
+this
manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
-Implemented the initial deployment of new OSL mutex interfaces. Since some
+Implemented the initial deployment of new OSL mutex interfaces. Since
+some
host operating systems have separate mutex and semaphore objects, this
feature was requested. The base code now uses mutexes (and the new mutex
interfaces) wherever a binary semaphore was used previously. However, for
-the current release, the mutex interfaces are defined as macros to map them
-to the existing semaphore interfaces. Therefore, no OSL changes are required
+the current release, the mutex interfaces are defined as macros to map
+them
+to the existing semaphore interfaces. Therefore, no OSL changes are
+required
at this time. (See acpiosxf.h)
Fixed several problems with the support for the control method SyncLevel
-parameter. The SyncLevel now works according to the ACPI specification and
-in concert with the Mutex SyncLevel parameter, since the current SyncLevel
-is a property of the executing thread. Mutual exclusion for control methods
+parameter. The SyncLevel now works according to the ACPI specification
+and
+in concert with the Mutex SyncLevel parameter, since the current
+SyncLevel
+is a property of the executing thread. Mutual exclusion for control
+methods
is now implemented with a mutex instead of a semaphore.
Fixed three instances of the use of the C shift operator in the bitfield
-support code (exfldio.c) to avoid the use of a shift value larger than the
-target data width. The behavior of C compilers is undefined in this case and
-can cause unpredictable results, and therefore the case must be detected and
+support code (exfldio.c) to avoid the use of a shift value larger than
+the
+target data width. The behavior of C compilers is undefined in this case
+and
+can cause unpredictable results, and therefore the case must be detected
+and
avoided. (Fiodor Suietov)
Added an info message whenever an SSDT or OEM table is loaded dynamically
-via the Load() or LoadTable() ASL operators. This should improve debugging
-capability since it will show exactly what tables have been loaded (beyond
+via the Load() or LoadTable() ASL operators. This should improve
+debugging
+capability since it will show exactly what tables have been loaded
+(beyond
the tables present in the RSDT/XSDT.)
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
+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: 80.0K Code, 17.6K Data, 97.6K Total
Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
@@ -3479,23 +6931,28 @@
----------------------------------------
08 June 2006. Summary of changes for version 20060608:
1) ACPI CA Core Subsystem:
-Converted the locking mutex used for the ACPI hardware to a spinlock. This
+Converted the locking mutex used for the ACPI hardware to a spinlock.
+This
change should eliminate all problems caused by attempting to acquire a
semaphore at interrupt level, and it means that all ACPICA external
-interfaces that directly access the ACPI hardware can be safely called from
-interrupt level. OSL code that implements the semaphore interfaces should be
+interfaces that directly access the ACPI hardware can be safely called
+from
+interrupt level. OSL code that implements the semaphore interfaces should
+be
able to eliminate any workarounds for being called at interrupt level.
Fixed a regression introduced in 20060526 where the ACPI device
-initialization could be prematurely aborted with an AE_NOT_FOUND if a device
+initialization could be prematurely aborted with an AE_NOT_FOUND if a
+device
did not have an optional _INI method.
Fixed an IndexField issue where a write to the Data Register should be
-limited in size to the AccessSize (width) of the IndexField itself. (BZ 433,
+limited in size to the AccessSize (width) of the IndexField itself. (BZ
+433,
Fiodor Suietov)
Fixed problem reports (Valery Podrezov) integrated:
- Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
@@ -3505,11 +6962,12 @@
Removed four global mutexes that were obsolete and were no longer being
used.
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
+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: 80.0K Code, 17.7K Data, 97.7K Total
Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
@@ -3533,43 +6991,51 @@
26 May 2006. Summary of changes for version 20060526:
1) ACPI CA Core Subsystem:
Restructured, flattened, and simplified the internal interfaces for
-namespace object evaluation - resulting in smaller code, less CPU stack use,
+namespace object evaluation - resulting in smaller code, less CPU stack
+use,
and fewer interfaces. (With assistance from Mikhail Kouzmich)
-Fixed a problem with the CopyObject operator where the first parameter was
-not typed correctly for the parser, interpreter, compiler, and disassembler.
+Fixed a problem with the CopyObject operator where the first parameter
+was
+not typed correctly for the parser, interpreter, compiler, and
+disassembler.
Caused various errors and unexpected behavior.
Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
produced incorrect results with some C compilers. Since the behavior of C
compilers when the shift value is larger than the datatype width is
-apparently not well defined, the interpreter now detects this condition and
+apparently not well defined, the interpreter now detects this condition
+and
simply returns zero as expected in all such cases. (BZ 395)
Fixed problem reports (Valery Podrezov) integrated:
- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
- Allow interpreter to handle nested method declarations (BZ 5361)
Fixed problem reports (Fiodor Suietov) integrated:
-- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355)
-- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356)
+- AcpiTerminate doesn't free debug memory allocation list objects (BZ
+355)
+- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
+356)
- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
- Resource Manager should return AE_TYPE for non-device objects (BZ 358)
- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
- Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
-- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365)
+- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
+365)
- Status of the Global Initialization Handler call not used (BZ 366)
- Incorrect object parameter to Global Initialization Handler (BZ 367)
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
+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: 79.8K Code, 17.7K Data, 97.5K Total
Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
@@ -3581,11 +7047,12 @@
2) iASL Compiler/Disassembler and Tools:
Modified the parser to allow the names IO, DMA, and IRQ to be used as
namespace identifiers with no collision with existing resource descriptor
macro names. This provides compatibility with other ASL compilers and is
-most useful for disassembly/recompilation of existing tables without parse
+most useful for disassembly/recompilation of existing tables without
+parse
errors. (With assistance from Thomas Renninger)
Disassembler: fixed an incorrect disassembly problem with the
DataTableRegion and CopyObject operators. Fixed a possible fault during
disassembly of some Alias operators.
@@ -3594,31 +7061,41 @@
12 May 2006. Summary of changes for version 20060512:
1) ACPI CA Core Subsystem:
Replaced the AcpiOsQueueForExecution interface with a new interface named
-AcpiOsExecute. The major difference is that the new interface does not have
-a Priority parameter, this appeared to be useless and has been replaced by a
+AcpiOsExecute. The major difference is that the new interface does not
+have
+a Priority parameter, this appeared to be useless and has been replaced
+by
+a
Type parameter. The Type tells the host what type of execution is being
requested, such as global lock handler, notify handler, GPE handler, etc.
-This allows the host to queue and execute the request as appropriate for the
-request type, possibly using different work queues and different priorities
+This allows the host to queue and execute the request as appropriate for
+the
+request type, possibly using different work queues and different
+priorities
for the various request types. This enables fixes for multithreading
-deadlock problems such as BZ #5534, and will require changes to all existing
+deadlock problems such as BZ #5534, and will require changes to all
+existing
OS interface layers. (Alexey Starikovskiy and Bob Moore)
-Fixed a possible memory leak associated with the support for the so-called
+Fixed a possible memory leak associated with the support for the so-
+called
"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
Suietov)
Fixed a problem with the Load() operator where a table load from an
-operation region could overwrite an internal table buffer by up to 7 bytes
-and cause alignment faults on IPF systems. (With assistance from Luming Yu)
+operation region could overwrite an internal table buffer by up to 7
+bytes
+and cause alignment faults on IPF systems. (With assistance from Luming
+Yu)
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
+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: 79.7K Code, 17.7K Data, 97.4K Total
Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
@@ -3628,20 +7105,26 @@
2) iASL Compiler/Disassembler and Tools:
-Disassembler: Implemented support to cross reference the internal namespace
-and automatically generate ASL External() statements for symbols not defined
+Disassembler: Implemented support to cross reference the internal
+namespace
+and automatically generate ASL External() statements for symbols not
+defined
within the current table being disassembled. This will simplify the
-disassembly and recompilation of interdependent tables such as SSDTs since
+disassembly and recompilation of interdependent tables such as SSDTs
+since
these statements will no longer have to be added manually.
Disassembler: Implemented experimental support to automatically detect
-invocations of external control methods and generate appropriate External()
-statements. This is problematic because the AML cannot be correctly parsed
-until the number of arguments for each control method is known. Currently,
+invocations of external control methods and generate appropriate
+External()
+statements. This is problematic because the AML cannot be correctly
+parsed
+until the number of arguments for each control method is known.
+Currently,
standalone method invocations and invocations as the source operand of a
Store() statement are supported.
Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
@@ -3653,23 +7136,26 @@
1) ACPI CA Core Subsystem:
Removed a device initialization optimization introduced in 20051216 where
the _STA method was not run unless an _INI was also present for the same
-device. This optimization could cause problems because it could allow _INI
+device. This optimization could cause problems because it could allow
+_INI
methods to be run within a not-present device subtree. (If a not-present
-device had no _INI, _STA would not be run, the not-present status would not
+device had no _INI, _STA would not be run, the not-present status would
+not
be discovered, and the children of the device would be incorrectly
traversed.)
Implemented a new _STA optimization where namespace subtrees that do not
contain _INI are identified and ignored during device initialization.
Selectively running _STA can significantly improve boot time on large
machines (with assistance from Len Brown.)
Implemented support for the device initialization case where the returned
-_STA flags indicate a device not-present but functioning. In this case, _INI
+_STA flags indicate a device not-present but functioning. In this case,
+_INI
is not run, but the device children are examined for presence, as per the
ACPI specification.
Implemented an additional change to the IndexField support in order to
conform to MS behavior. The value written to the Index Register is not
@@ -3678,36 +7164,42 @@
Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
interface is called during the creation of all AML operation regions, and
allows the host OS to exert control over what addresses it will allow the
AML code to access. Operation Regions whose addresses are disallowed will
-cause a runtime exception when they are actually accessed (will not affect
+cause a runtime exception when they are actually accessed (will not
+affect
or abort table loading.) See oswinxf or osunixxf for an example
implementation.
Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
interface allows the host OS to match the various "optional"
interface/behavior strings for the _OSI predefined control method as
appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
for an example implementation.
-Restructured and corrected various problems in the exception handling code
+Restructured and corrected various problems in the exception handling
+code
paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
(with assistance from Takayoshi Kochi.)
-Modified the Linux source converter to ignore quoted string literals while
-converting identifiers from mixed to lower case. This will correct problems
+Modified the Linux source converter to ignore quoted string literals
+while
+converting identifiers from mixed to lower case. This will correct
+problems
with the disassembler and other areas where such strings must not be
modified.
The ACPI_FUNCTION_* macros no longer require quotes around the function
-name. This allows the Linux source converter to convert the names, now that
+name. This allows the Linux source converter to convert the names, now
+that
the converter ignores quoted strings.
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
+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: 81.1K Code, 17.7K Data, 98.8K Total
@@ -3717,25 +7209,32 @@
Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
2) iASL Compiler/Disassembler and Tools:
-Implemented 3 new warnings for iASL, and implemented multiple warning levels
+Implemented 3 new warnings for iASL, and implemented multiple warning
+levels
(w2 flag).
-1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not
+1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
+not
WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
check for the possible timeout, a warning is issued.
-2) Useless operators: If an ASL operator does not specify an optional target
+2) Useless operators: If an ASL operator does not specify an optional
+target
operand and it also does not use the function return value from the
-operator, a warning is issued since the operator effectively does nothing.
+operator, a warning is issued since the operator effectively does
+nothing.
3) Unreferenced objects: If a namespace object is created, but never
-referenced, a warning is issued. This is a warning level 2 since there are
-cases where this is ok, such as when a secondary table is loaded that uses
-the unreferenced objects. Even so, care is taken to only flag objects that
+referenced, a warning is issued. This is a warning level 2 since there
+are
+cases where this is ok, such as when a secondary table is loaded that
+uses
+the unreferenced objects. Even so, care is taken to only flag objects
+that
don't look like they will ever be used. For example, the reserved methods
(starting with an underscore) are usually not referenced because it is
expected that the OS will invoke them.
----------------------------------------
@@ -3742,45 +7241,55 @@
31 March 2006. Summary of changes for version 20060331:
1) ACPI CA Core Subsystem:
Implemented header file support for the following additional ACPI tables:
-ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support,
-all current and known ACPI tables are now defined in the ACPICA headers and
+ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
+support,
+all current and known ACPI tables are now defined in the ACPICA headers
+and
are available for use by device drivers and other software.
Implemented support to allow tables that contain ACPI names with invalid
characters to be loaded. Previously, this would cause the table load to
fail, but since there are several known cases of such tables on existing
-machines, this change was made to enable ACPI support for them. Also, this
+machines, this change was made to enable ACPI support for them. Also,
+this
matches the behavior of the Microsoft ACPI implementation.
-Fixed a couple regressions introduced during the memory optimization in the
+Fixed a couple regressions introduced during the memory optimization in
+the
20060317 release. The namespace node definition required additional
-reorganization and an internal datatype that had been changed to 8-bit was
+reorganization and an internal datatype that had been changed to 8-bit
+was
restored to 32-bit. (Valery Podrezov)
Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
could be passed through to AcpiOsReleaseObject which is unexpected. Such
null pointers are now trapped and ignored, matching the behavior of the
previous implementation before the deployment of AcpiOsReleaseObject.
(Valery Podrezov, Fiodor Suietov)
-Fixed a memory mapping leak during the deletion of a SystemMemory operation
+Fixed a memory mapping leak during the deletion of a SystemMemory
+operation
region where a cached memory mapping was not deleted. This became a
-noticeable problem for operation regions that are defined within frequently
+noticeable problem for operation regions that are defined within
+frequently
used control methods. (Dana Meyers)
Reorganized the ACPI table header files into two main files: one for the
-ACPI tables consumed by the ACPICA core, and another for the miscellaneous
-ACPI tables that are consumed by the drivers and other software. The various
+ACPI tables consumed by the ACPICA core, and another for the
+miscellaneous
+ACPI tables that are consumed by the drivers and other software. The
+various
FADT definitions were merged into one common section and three different
tables (ACPI 1.0, 1.0+, and 2.0)
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
+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: 80.9K Code, 17.7K Data, 98.6K Total
Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
@@ -3791,20 +7300,23 @@
2) iASL Compiler/Disassembler and Tools:
Disassembler: Implemented support to decode and format all non-AML ACPI
tables (tables other than DSDTs and SSDTs.) This includes the new tables
-added to the ACPICA headers, therefore all current and known ACPI tables are
+added to the ACPICA headers, therefore all current and known ACPI tables
+are
supported.
Disassembler: The change to allow ACPI names with invalid characters also
-enables the disassembly of such tables. Invalid characters within names are
+enables the disassembly of such tables. Invalid characters within names
+are
changed to '*' to make the name printable; the iASL compiler will still
generate an error for such names, however, since this is an invalid ACPI
character.
-Implemented an option for AcpiXtract (-a) to extract all tables found in the
+Implemented an option for AcpiXtract (-a) to extract all tables found in
+the
input file. The default invocation extracts only the DSDTs and SSDTs.
Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
makefile for the AcpiXtract utility.
@@ -3813,38 +7325,47 @@
1) ACPI CA Core Subsystem:
Implemented the use of a cache object for all internal namespace nodes.
Since there are about 1000 static nodes in a typical system, this will
-decrease memory use for cache implementations that minimize per-allocation
+decrease memory use for cache implementations that minimize per-
+allocation
overhead (such as a slab allocator.)
-Removed the reference count mechanism for internal namespace nodes, since it
+Removed the reference count mechanism for internal namespace nodes, since
+it
was deemed unnecessary. This reduces the size of each namespace node by
-about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case,
+about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
+case,
and 32 bytes for the 64-bit case.
-Optimized several internal data structures to reduce object size on 64-bit
+Optimized several internal data structures to reduce object size on 64-
+bit
platforms by packing data within the 64-bit alignment. This includes the
frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
instances corresponding to the namespace objects.
-Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1"
+Added two new strings for the predefined _OSI method: "Windows 2001.1
+SP1"
and "Windows 2006".
Split the allocation tracking mechanism out to a separate file, from
utalloc.c to uttrack.c. This mechanism appears to be only useful for
application-level code. Kernels may wish to not include uttrack.c in
distributions.
-Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated
+Removed all remnants of the obsolete ACPI_REPORT_* macros and the
+associated
code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
macros.)
-Code and Data Size: These are the sizes for the acpica.lib produced by the
-Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
-driver or OSPM code. The debug version of the code includes the debug output
+Code and Data Size: These are the sizes for the acpica.lib produced by
+the
+Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
+ACPI
+driver or OSPM code. The debug version of the code includes the debug
+output
trace mechanism and has a much larger code and data size. Note that these
values will vary depending on the efficiency of the compiler and the
compiler options used during generation.
Previous Release:
@@ -3855,11 +7376,12 @@
Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
2) iASL Compiler/Disassembler and Tools:
-Implemented an ANSI C version of the acpixtract utility. This version will
+Implemented an ANSI C version of the acpixtract utility. This version
+will
automatically extract the DSDT and all SSDTs from the input acpidump text
file and dump the binary output to separate files. It can also display a
summary of the input file including the headers for each table found and
will extract any single ACPI table, with any signature. (See
source/tools/acpixtract)
@@ -3868,36 +7390,45 @@
10 March 2006. Summary of changes for version 20060310:
1) ACPI CA Core Subsystem:
Tagged all external interfaces to the subsystem with the new
-ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist
+ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
+assist
kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
macro. The default definition is NULL.
-Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId.
+Added the ACPI_THREAD_ID type for the return value from
+AcpiOsGetThreadId.
This allows the host to define this as necessary to simplify kernel
integration. The default definition is ACPI_NATIVE_UINT.
-Fixed two interpreter problems related to error processing, the deletion of
+Fixed two interpreter problems related to error processing, the deletion
+of
objects, and placing invalid pointers onto the internal operator result
stack. BZ 6028, 6151 (Valery Podrezov)
-Increased the reference count threshold where a warning is emitted for large
-reference counts in order to eliminate unnecessary warnings on systems with
+Increased the reference count threshold where a warning is emitted for
+large
+reference counts in order to eliminate unnecessary warnings on systems
+with
large namespaces (especially 64-bit.) Increased the value from 0x400 to
0x800.
-Due to universal disagreement as to the meaning of the 'c' in the calloc()
+Due to universal disagreement as to the meaning of the 'c' in the
+calloc()
function, the ACPI_MEM_CALLOCATE macro has been renamed to
ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
ACPI_FREE.
-Code and Data Size: These are the sizes for the acpica.lib produced by the
-Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
-driver or OSPM code. The debug version of the code includes the debug output
+Code and Data Size: These are the sizes for the acpica.lib produced by
+the
+Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
+ACPI
+driver or OSPM code. The debug version of the code includes the debug
+output
trace mechanism and has a much larger code and data size. Note that these
values will vary depending on the efficiency of the compiler and the
compiler options used during generation.
Previous Release:
@@ -3909,52 +7440,66 @@
2) iASL Compiler/Disassembler:
Disassembler: implemented support for symbolic resource descriptor
-references. If a CreateXxxxField operator references a fixed offset within a
-resource descriptor, a name is assigned to the descriptor and the offset is
+references. If a CreateXxxxField operator references a fixed offset
+within
+a
+resource descriptor, a name is assigned to the descriptor and the offset
+is
translated to the appropriate resource tag and pathname. The addition of
this support brings the disassembled code very close to the original ASL
-source code and helps eliminate run-time errors when the disassembled code
+source code and helps eliminate run-time errors when the disassembled
+code
is modified (and recompiled) in such a way as to invalidate the original
fixed offsets.
-Implemented support for a Descriptor Name as the last parameter to the ASL
+Implemented support for a Descriptor Name as the last parameter to the
+ASL
Register() macro. This parameter was inadvertently left out of the ACPI
specification, and will be added for ACPI 3.0b.
Fixed a problem where the use of the "_OSI" string (versus the full path
"\_OSI") caused an internal compiler error. ("No back ptr to op")
-Fixed a problem with the error message that occurs when an invalid string is
-used for a _HID object (such as one with an embedded asterisk: "*PNP010A".)
+Fixed a problem with the error message that occurs when an invalid string
+is
+used for a _HID object (such as one with an embedded asterisk:
+"*PNP010A".)
The correct message is now displayed.
----------------------------------------
17 February 2006. Summary of changes for version 20060217:
1) ACPI CA Core Subsystem:
-Implemented a change to the IndexField support to match the behavior of the
-Microsoft AML interpreter. The value written to the Index register is now a
-byte offset, no longer an index based upon the width of the Data register.
+Implemented a change to the IndexField support to match the behavior of
+the
+Microsoft AML interpreter. The value written to the Index register is now
+a
+byte offset, no longer an index based upon the width of the Data
+register.
This should fix IndexField problems seen on some machines where the Data
register is not exactly one byte wide. The ACPI specification will be
clarified on this point.
Fixed a problem where several resource descriptor types could overrun the
internal descriptor buffer due to size miscalculation: VendorShort,
VendorLong, and Interrupt. This was noticed on IA64 machines, but could
affect all platforms.
-Fixed a problem where individual resource descriptors were misaligned within
+Fixed a problem where individual resource descriptors were misaligned
+within
the internal buffer, causing alignment faults on IA64 platforms.
-Code and Data Size: These are the sizes for the acpica.lib produced by the
-Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
-driver or OSPM code. The debug version of the code includes the debug output
+Code and Data Size: These are the sizes for the acpica.lib produced by
+the
+Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
+ACPI
+driver or OSPM code. The debug version of the code includes the debug
+output
trace mechanism and has a much larger code and data size. Note that these
values will vary depending on the efficiency of the compiler and the
compiler options used during generation.
Previous Release:
@@ -3981,40 +7526,51 @@
Removed a couple of extraneous ACPI_ERROR messages that appeared during
normal execution. These became apparent after the conversion from
ACPI_DEBUG_PRINT.
-Fixed a problem where the CreateField operator could hang if the BitIndex or
+Fixed a problem where the CreateField operator could hang if the BitIndex
+or
NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
Fixed a problem where a DeRefOf operation on a buffer object incorrectly
failed with an exception. This also fixes a couple of related RefOf and
DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
-Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of
-AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ
+Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
+of
+AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
+BZ
5480)
-Implemented a memory cleanup at the end of the execution of each iteration
-of an AML While() loop, preventing the accumulation of outstanding objects.
+Implemented a memory cleanup at the end of the execution of each
+iteration
+of an AML While() loop, preventing the accumulation of outstanding
+objects.
(Valery Podrezov, BZ 5427)
-Eliminated a chunk of duplicate code in the object resolution code. (Valery
+Eliminated a chunk of duplicate code in the object resolution code.
+(Valery
Podrezov, BZ 5336)
Fixed several warnings during the 64-bit code generation.
-The AcpiSrc source code conversion tool now inserts one line of whitespace
-after an if() statement that is followed immediately by a comment, improving
+The AcpiSrc source code conversion tool now inserts one line of
+whitespace
+after an if() statement that is followed immediately by a comment,
+improving
readability of the Linux code.
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
@@ -4023,53 +7579,63 @@
Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
2) iASL Compiler/Disassembler:
-Fixed a problem with the disassembly of a BankField operator with a complex
+Fixed a problem with the disassembly of a BankField operator with a
+complex
expression for the BankValue parameter.
----------------------------------------
27 January 2006. Summary of changes for version 20060127:
1) ACPI CA Core Subsystem:
-Implemented support in the Resource Manager to allow unresolved namestring
-references within resource package objects for the _PRT method. This support
+Implemented support in the Resource Manager to allow unresolved
+namestring
+references within resource package objects for the _PRT method. This
+support
is in addition to the previously implemented unresolved reference support
within the AML parser. If the interpreter slack mode is enabled, these
-unresolved references will be passed through to the caller as a NULL package
+unresolved references will be passed through to the caller as a NULL
+package
entry.
Implemented and deployed new macros and functions for error and warning
messages across the subsystem. These macros are simpler and generate less
code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
macros remain defined to allow ACPI drivers time to migrate to the new
macros.
-Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the
+Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
+the
Acquire/Release Lock OSL interfaces.
Fixed a problem where Alias ASL operators are sometimes not correctly
resolved, in both the interpreter and the iASL compiler.
-Fixed several problems with the implementation of the ConcatenateResTemplate
+Fixed several problems with the implementation of the
+ConcatenateResTemplate
ASL operator. As per the ACPI specification, zero length buffers are now
treated as a single EndTag. One-length buffers always cause a fatal
-exception. Non-zero length buffers that do not end with a full 2-byte EndTag
+exception. Non-zero length buffers that do not end with a full 2-byte
+EndTag
cause a fatal exception.
Fixed a possible structure overwrite in the AcpiGetObjectInfo external
interface. (With assistance from Thomas Renninger)
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
@@ -4078,11 +7644,12 @@
Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
2) iASL Compiler/Disassembler:
-Fixed an internal error that was generated for any forward references to ASL
+Fixed an internal error that was generated for any forward references to
+ASL
Alias objects.
----------------------------------------
13 January 2006. Summary of changes for version 20060113:
@@ -4090,33 +7657,42 @@
Added 2006 copyright to all module headers and signons. This affects
virtually every file in the ACPICA core subsystem, iASL compiler, and the
utilities.
-Enhanced the ACPICA error reporting in order to simplify user migration to
+Enhanced the ACPICA error reporting in order to simplify user migration
+to
the non-debug version of ACPICA. Replaced all instances of the
-ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug
+ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
+debug
levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
-respectively. This preserves all error and warning messages in the non-debug
+respectively. This preserves all error and warning messages in the non-
+debug
version of the ACPICA code (this has been referred to as the "debug lite"
option.) Over 200 cases were converted to create a total of over 380
-error/warning messages across the ACPICA code. This increases the code and
-data size of the default non-debug version of the code somewhat (about 13K),
+error/warning messages across the ACPICA code. This increases the code
+and
+data size of the default non-debug version of the code somewhat (about
+13K),
but all error/warning reporting may be disabled if desired (and code
eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
-configuration option. The size of the debug version of ACPICA remains about
+configuration option. The size of the debug version of ACPICA remains
+about
the same.
Fixed a memory leak within the AML Debugger "Set" command. One object was
not properly deleted for every successful invocation of the command.
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
@@ -4126,32 +7702,40 @@
2) iASL Compiler/Disassembler:
The compiler now officially supports the ACPI 3.0a specification that was
-released on December 30, 2005. (Specification is available at www.acpi.info)
+released on December 30, 2005. (Specification is available at
+www.acpi.info)
----------------------------------------
16 December 2005. Summary of changes for version 20051216:
1) ACPI CA Core Subsystem:
Implemented optional support to allow unresolved names within ASL Package
objects. A null object is inserted in the package when a named reference
cannot be located in the current namespace. Enabled via the interpreter
-slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines
+slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
+machines
that contain such code.
-Implemented an optimization to the initialization sequence that can improve
-boot time. During ACPI device initialization, the _STA method is now run if
-and only if the _INI method exists. The _STA method is used to determine if
-the device is present; An _INI can only be run if _STA returns present, but
+Implemented an optimization to the initialization sequence that can
+improve
+boot time. During ACPI device initialization, the _STA method is now run
+if
+and only if the _INI method exists. The _STA method is used to determine
+if
+the device is present; An _INI can only be run if _STA returns present,
+but
it is a waste of time to run the _STA method if the _INI does not exist.
(Prototype and assistance from Dong Wei)
-Implemented use of the C99 uintptr_t for the pointer casting macros if it is
-available in the current compiler. Otherwise, the default (void *) cast is
+Implemented use of the C99 uintptr_t for the pointer casting macros if it
+is
+available in the current compiler. Otherwise, the default (void *) cast
+is
used as before.
Fixed some possible memory leaks found within the execution path of the
Break, Continue, If, and CreateField operators. (Valery Podrezov)
@@ -4161,22 +7745,26 @@
Moved resource descriptor string constants that are used by both the AML
disassembler and AML debugger to the common utilities directory so that
these components are independent.
-Implemented support in the AcpiExec utility (-e switch) to globally ignore
+Implemented support in the AcpiExec utility (-e switch) to globally
+ignore
exceptions during control method execution (method is not aborted.)
Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
generation.
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
@@ -4185,43 +7773,54 @@
Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
2) iASL Compiler/Disassembler:
-Fixed a problem where a CPU stack overflow fault could occur if a recursive
+Fixed a problem where a CPU stack overflow fault could occur if a
+recursive
method call was made from within a Return statement.
----------------------------------------
02 December 2005. Summary of changes for version 20051202:
1) ACPI CA Core Subsystem:
Modified the parsing of control methods to no longer create namespace
objects during the first pass of the parse. Objects are now created only
-during the execute phase, at the moment the namespace creation operator is
-encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This
+during the execute phase, at the moment the namespace creation operator
+is
+encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
+This
should eliminate ALREADY_EXISTS exceptions seen on some machines where
-reentrant control methods are protected by an AML mutex. The mutex will now
-correctly block multiple threads from attempting to create the same object
+reentrant control methods are protected by an AML mutex. The mutex will
+now
+correctly block multiple threads from attempting to create the same
+object
more than once.
Increased the number of available Owner Ids for namespace object tracking
-from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on
-some machines with a large number of ACPI tables (either static or dynamic).
+from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
+on
+some machines with a large number of ACPI tables (either static or
+dynamic).
-Fixed a problem with the AcpiExec utility where a fault could occur when the
+Fixed a problem with the AcpiExec utility where a fault could occur when
+the
-b switch (batch mode) is used.
Enhanced the namespace dump routine to output the owner ID for each
namespace object.
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
@@ -4230,12 +7829,14 @@
Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
2) iASL Compiler/Disassembler:
-Fixed a parse error during compilation of certain Switch/Case constructs. To
-simplify the parse, the grammar now allows for multiple Default statements
+Fixed a parse error during compilation of certain Switch/Case constructs.
+To
+simplify the parse, the grammar now allows for multiple Default
+statements
and this error is now detected and flagged during the analysis phase.
Disassembler: The disassembly now includes the contents of the original
table header within a comment at the start of the file. This includes the
name and version of the original ASL compiler.
@@ -4244,49 +7845,63 @@
17 November 2005. Summary of changes for version 20051117:
1) ACPI CA Core Subsystem:
Fixed a problem in the AML parser where the method thread count could be
-decremented below zero if any errors occurred during the method parse phase.
-This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines.
+decremented below zero if any errors occurred during the method parse
+phase.
+This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
+machines.
This also fixed a related regression with the mechanism that detects and
corrects methods that cannot properly handle reentrancy (related to the
deployment of the new OwnerId mechanism.)
Eliminated the pre-parsing of control methods (to detect errors) during
-table load. Related to the problem above, this was causing unwind issues if
-any errors occurred during the parse, and it seemed to be overkill. A table
+table load. Related to the problem above, this was causing unwind issues
+if
+any errors occurred during the parse, and it seemed to be overkill. A
+table
load should not be aborted if there are problems with any single control
method, thus rendering this feature rather pointless.
-Fixed a problem with the new table-driven resource manager where an internal
+Fixed a problem with the new table-driven resource manager where an
+internal
buffer overflow could occur for small resource templates.
-Implemented a new external interface, AcpiGetVendorResource. This interface
-will find and return a vendor-defined resource descriptor within a _CRS or
-_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas.
+Implemented a new external interface, AcpiGetVendorResource. This
+interface
+will find and return a vendor-defined resource descriptor within a _CRS
+or
+_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
+Helgaas.
Removed the length limit (200) on string objects as per the upcoming ACPI
-3.0A specification. This affects the following areas of the interpreter: 1)
-any implicit conversion of a Buffer to a String, 2) a String object result
+3.0A specification. This affects the following areas of the interpreter:
+1)
+any implicit conversion of a Buffer to a String, 2) a String object
+result
of the ASL Concatentate operator, 3) the String object result of the ASL
ToString operator.
-Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER
+Fixed a problem in the Windows OS interface layer (OSL) where a
+WAIT_FOREVER
on a semaphore object would incorrectly timeout. This allows the
multithreading features of the AcpiExec utility to work properly under
Windows.
Updated the Linux makefiles for the iASL compiler and AcpiExec to include
the recently added file named "utresrc.c".
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
@@ -4296,54 +7911,68 @@
2) iASL Compiler/Disassembler:
Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
-specification. For the iASL compiler, this means that string literals within
+specification. For the iASL compiler, this means that string literals
+within
the source ASL can be of any length.
Enhanced the listing output to dump the AML code for resource descriptors
-immediately after the ASL code for each descriptor, instead of in a block at
+immediately after the ASL code for each descriptor, instead of in a block
+at
the end of the entire resource template.
Enhanced the compiler debug output to dump the entire original parse tree
-constructed during the parse phase, before any transforms are applied to the
+constructed during the parse phase, before any transforms are applied to
+the
tree. The transformed tree is dumped also.
----------------------------------------
02 November 2005. Summary of changes for version 20051102:
1) ACPI CA Core Subsystem:
-Modified the subsystem initialization sequence to improve GPE support. The
-GPE initialization has been split into two parts in order to defer execution
-of the _PRW methods (Power Resources for Wake) until after the hardware is
+Modified the subsystem initialization sequence to improve GPE support.
+The
+GPE initialization has been split into two parts in order to defer
+execution
+of the _PRW methods (Power Resources for Wake) until after the hardware
+is
fully initialized and the SCI handler is installed. This allows the _PRW
-methods to access fields protected by the Global Lock. This will fix systems
+methods to access fields protected by the Global Lock. This will fix
+systems
where a NO_GLOBAL_LOCK exception has been seen during initialization.
-Converted the ACPI internal object disassemble and display code within the
+Converted the ACPI internal object disassemble and display code within
+the
AML debugger to fully table-driven operation, reducing code size and
increasing maintainability.
-Fixed a regression with the ConcatenateResTemplate() ASL operator introduced
+Fixed a regression with the ConcatenateResTemplate() ASL operator
+introduced
in the 20051021 release.
Implemented support for "local" internal ACPI object types within the
debugger "Object" command and the AcpiWalkNamespace external interfaces.
-These local types include RegionFields, BankFields, IndexFields, Alias, and
+These local types include RegionFields, BankFields, IndexFields, Alias,
+and
reference objects.
-Moved common AML resource handling code into a new file, "utresrc.c". This
+Moved common AML resource handling code into a new file, "utresrc.c".
+This
code is shared by both the Resource Manager and the AML Debugger.
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
@@ -4352,24 +7981,30 @@
Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
2) iASL Compiler/Disassembler:
-Fixed a problem with very large initializer lists (more than 4000 elements)
+Fixed a problem with very large initializer lists (more than 4000
+elements)
for both Buffer and Package objects where the parse stack could overflow.
-Enhanced the pre-compile source code scan for non-ASCII characters to ignore
-characters within comment fields. The scan is now always performed and is no
+Enhanced the pre-compile source code scan for non-ASCII characters to
+ignore
+characters within comment fields. The scan is now always performed and is
+no
longer optional, detecting invalid characters within a source file
immediately rather than during the parse phase or later.
-Enhanced the ASL grammar definition to force early reductions on all list-
+Enhanced the ASL grammar definition to force early reductions on all
+list-
style grammar elements so that the overall parse stack usage is greatly
-reduced. This should improve performance and reduce the possibility of parse
+reduced. This should improve performance and reduce the possibility of
+parse
stack overflow.
-Eliminated all reduce/reduce conflicts in the iASL parser generation. Also,
+Eliminated all reduce/reduce conflicts in the iASL parser generation.
+Also,
with the addition of a %expected statement, the compiler generates from
source with no warnings.
Fixed a possible segment fault in the disassembler if the input filename
does not contain a "dot" extension (Thomas Renninger).
@@ -4385,31 +8020,38 @@
hardware support for non-aligned transfers.
Completed conversion of the Resource Manager to nearly full table-driven
operation. Specifically, the resource conversion code (convert AML to
internal format and the reverse) and the debug code to dump internal
-resource descriptors are fully table-driven, reducing code and data size and
+resource descriptors are fully table-driven, reducing code and data size
+and
improving maintainability.
-The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word
-on 64-bit processors instead of a fixed 32-bit word. (With assistance from
+The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
+word
+on 64-bit processors instead of a fixed 32-bit word. (With assistance
+from
Alexey Starikovskiy)
Implemented support within the resource conversion code for the Type-
Specific byte within the various ACPI 3.0 *WordSpace macros.
-Fixed some issues within the resource conversion code for the type-specific
+Fixed some issues within the resource conversion code for the type-
+specific
flags for both Memory and I/O address resource descriptors. For Memory,
implemented support for the MTP and TTP flags. For I/O, split the TRS and
TTP flags into two separate fields.
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
@@ -4419,57 +8061,71 @@
2) iASL Compiler/Disassembler:
-Relaxed a compiler restriction that disallowed a ResourceIndex byte if the
+Relaxed a compiler restriction that disallowed a ResourceIndex byte if
+the
corresponding ResourceSource string was not also present in a resource
descriptor declaration. This restriction caused problems with existing
-AML/ASL code that includes the Index byte without the string. When such AML
+AML/ASL code that includes the Index byte without the string. When such
+AML
was disassembled, it could not be compiled without modification. Further,
-the modified code created a resource template with a different size than the
-original, breaking code that used fixed offsets into the resource template
+the modified code created a resource template with a different size than
+the
+original, breaking code that used fixed offsets into the resource
+template
buffer.
-Removed a recent feature of the disassembler to ignore a lone ResourceIndex
+Removed a recent feature of the disassembler to ignore a lone
+ResourceIndex
byte. This byte is now emitted if present so that the exact AML can be
reproduced when the disassembled code is recompiled.
Improved comments and text alignment for the resource descriptor code
emitted by the disassembler.
-Implemented disassembler support for the ACPI 3.0 AccessSize field within a
+Implemented disassembler support for the ACPI 3.0 AccessSize field within
+a
Register() resource descriptor.
----------------------------------------
30 September 2005. Summary of changes for version 20050930:
1) ACPI CA Core Subsystem:
Completed a major overhaul of the Resource Manager code - specifically,
-optimizations in the area of the AML/internal resource conversion code. The
-code has been optimized to simplify and eliminate duplicated code, CPU stack
+optimizations in the area of the AML/internal resource conversion code.
+The
+code has been optimized to simplify and eliminate duplicated code, CPU
+stack
use has been decreased by optimizing function parameters and local
-variables, and naming conventions across the manager have been standardized
+variables, and naming conventions across the manager have been
+standardized
for clarity and ease of maintenance (this includes function, parameter,
variable, and struct/typedef names.) The update may force changes in some
driver code, depending on how resources are handled by the host OS.
All Resource Manager dispatch and information tables have been moved to a
single location for clarity and ease of maintenance. One new file was
created, named "rsinfo.c".
The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
-guarantee that the argument is not evaluated twice, making them less prone
+guarantee that the argument is not evaluated twice, making them less
+prone
to macro side-effects. However, since there exists the possibility of
-additional stack use if a particular compiler cannot optimize them (such as
-in the debug generation case), the original macros are optionally available.
+additional stack use if a particular compiler cannot optimize them (such
+as
+in the debug generation case), the original macros are optionally
+available.
Note that some invocations of the return_VALUE macro may now cause size
-mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to
+mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
+to
eliminate these. (From Randy Dunlap)
-Implemented a new mechanism to enable debug tracing for individual control
+Implemented a new mechanism to enable debug tracing for individual
+control
methods. A new external interface, AcpiDebugTrace, is provided to enable
this mechanism. The intent is to allow the host OS to easily enable and
disable tracing for problematic control methods. This interface can be
easily exposed to a user or debugger interface if desired. See the file
psxface.c for details.
@@ -4478,14 +8134,17 @@
specified - a length of one is used and a warning is issued. This matches
the behavior of AcpiUtAllocate.
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
@@ -4503,15 +8162,17 @@
16 September 2005. Summary of changes for version 20050916:
1) ACPI CA Core Subsystem:
Fixed a problem within the Resource Manager where support for the Generic
-Register descriptor was not fully implemented. This descriptor is now fully
+Register descriptor was not fully implemented. This descriptor is now
+fully
recognized, parsed, disassembled, and displayed.
Completely restructured the Resource Manager code to utilize table-driven
-dispatch and lookup, eliminating many of the large switch() statements. This
+dispatch and lookup, eliminating many of the large switch() statements.
+This
reduces overall subsystem code size and code complexity. Affects the
resource parsing and construction, disassembly, and debug dump output.
Cleaned up and restructured the debug dump output for all resource
descriptors. Improved readability of the output and reduced code size.
@@ -4519,14 +8180,17 @@
Fixed a problem where changes to internal data structures caused the
optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
Code and Data Size: The current and previous library sizes for the core
subsystem are shown below. These are the code and data sizes for the
-acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
-values do not include any ACPI driver or OSPM code. The debug version of the
+acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
+These
+values do not include any ACPI driver or OSPM code. The debug version of
+the
code includes the debug output trace mechanism and has a much larger code
-and data size. Note that these values will vary depending on the efficiency
+and data size. Note that these values will vary depending on the
+efficiency
of the compiler and the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
@@ -4535,16 +8199,18 @@
Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
2) iASL Compiler/Disassembler:
-Updated the disassembler to automatically insert an EndDependentFn() macro
+Updated the disassembler to automatically insert an EndDependentFn()
+macro
into the ASL stream if this macro is missing in the original AML code,
simplifying compilation of the resulting ASL module.
Fixed a problem in the disassembler where a disassembled ResourceSource
-string (within a large resource descriptor) was not surrounded by quotes and
+string (within a large resource descriptor) was not surrounded by quotes
+and
not followed by a comma, causing errors when the resulting ASL module was
compiled. Also, escape sequences within a ResourceSource string are now
handled correctly (especially "\\")
----------------------------------------
@@ -4557,19 +8223,22 @@
This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
messages seen on some systems. Recursive method invocation depth is
currently limited to 255. (Alexey Starikovskiy)
Completely eliminated all vestiges of support for the "module-level
-executable code" until this support is fully implemented and debugged. This
+executable code" until this support is fully implemented and debugged.
+This
should eliminate the NO_RETURN_VALUE exceptions seen during table load on
some systems that invoke this support.
-Fixed a problem within the resource manager code where the transaction flags
+Fixed a problem within the resource manager code where the transaction
+flags
for a 64-bit address descriptor were handled incorrectly in the type-
specific flag byte.
-Consolidated duplicate code within the address descriptor resource manager
+Consolidated duplicate code within the address descriptor resource
+manager
code, reducing overall subsystem code size.
Fixed a fault when using the AML debugger "disassemble" command to
disassemble individual control methods.
@@ -4577,13 +8246,16 @@
release package.
Code and Data Size: The current and previous core subsystem library sizes
are shown below. These are the code and data sizes for the acpica.lib
produced by the Microsoft Visual C++ 6.0 compiler. These values do not
-include any ACPI driver or OSPM code. The debug version of the code includes
-the debug output trace mechanism and has a much larger code and data size.
-Note that these values will vary depending on the efficiency of the compiler
+include any ACPI driver or OSPM code. The debug version of the code
+includes
+the debug output trace mechanism and has a much larger code and data
+size.
+Note that these values will vary depending on the efficiency of the
+compiler
and the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
@@ -4592,15 +8264,17 @@
Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
2) iASL Compiler/Disassembler:
-Implemented an error check for illegal duplicate values in the interrupt and
+Implemented an error check for illegal duplicate values in the interrupt
+and
dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
Interrupt().
-Implemented error checking for the Irq() and IrqNoFlags() macros to detect
+Implemented error checking for the Irq() and IrqNoFlags() macros to
+detect
too many values in the interrupt list (16 max) and invalid values in the
list (range 0 - 15)
The maximum length string literal within an ASL file is now restricted to
200 characters as per the ACPI specification.
@@ -4613,24 +8287,30 @@
----------------------------------------
15 August 2005. Summary of changes for version 20050815:
1) ACPI CA Core Subsystem:
-Implemented a full bytewise compare to determine if a table load request is
-attempting to load a duplicate table. The compare is performed if the table
+Implemented a full bytewise compare to determine if a table load request
+is
+attempting to load a duplicate table. The compare is performed if the
+table
signatures and table lengths match. This will allow different tables with
-the same OEM Table ID and revision to be loaded - probably against the ACPI
+the same OEM Table ID and revision to be loaded - probably against the
+ACPI
specification, but discovered in the field nonetheless.
Added the changes.txt logfile to each of the zipped release packages.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
@@ -4643,50 +8323,62 @@
Fixed a problem where incorrect AML code could be generated for Package
objects if optimization is disabled (via the -oa switch).
Fixed a problem with where incorrect AML code is generated for variable-
-length packages when the package length is not specified and the number of
+length packages when the package length is not specified and the number
+of
initializer values is greater than 255.
----------------------------------------
29 July 2005. Summary of changes for version 20050729:
1) ACPI CA Core Subsystem:
-Implemented support to ignore an attempt to install/load a particular ACPI
+Implemented support to ignore an attempt to install/load a particular
+ACPI
table more than once. Apparently there exists BIOS code that repeatedly
attempts to load the same SSDT upon certain events. With assistance from
Venkatesh Pallipadi.
Restructured the main interface to the AML parser in order to correctly
-handle all exceptional conditions. This will prevent leakage of the OwnerId
-resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some
+handle all exceptional conditions. This will prevent leakage of the
+OwnerId
+resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
+some
machines. With assistance from Alexey Starikovskiy.
-Support for "module level code" has been disabled in this version due to a
-number of issues that have appeared on various machines. The support can be
+Support for "module level code" has been disabled in this version due to
+a
+number of issues that have appeared on various machines. The support can
+be
enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
-compilation. When the issues are fully resolved, the code will be enabled by
+compilation. When the issues are fully resolved, the code will be enabled
+by
default again.
Modified the internal functions for debug print support to define the
-FunctionName parameter as a (const char *) for compatibility with compiler
+FunctionName parameter as a (const char *) for compatibility with
+compiler
built-in macros such as __FUNCTION__, etc.
Linted the entire ACPICA source tree for both 32-bit and 64-bit.
-Implemented support to display an object count summary for the AML Debugger
+Implemented support to display an object count summary for the AML
+Debugger
commands Object and Methods.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
@@ -4696,11 +8388,12 @@
2) iASL Compiler/Disassembler:
Fixed a regression that appeared in the 20050708 version of the compiler
-where an error message was inadvertently emitted for invocations of the _OSI
+where an error message was inadvertently emitted for invocations of the
+_OSI
reserved control method.
----------------------------------------
08 July 2005. Summary of changes for version 20050708:
@@ -4708,49 +8401,64 @@
The use of the CPU stack in the debug version of the subsystem has been
considerably reduced. Previously, a debug structure was declared in every
function that used the debug macros. This structure has been removed in
favor of declaring the individual elements as parameters to the debug
-functions. This reduces the cumulative stack use during nested execution of
-ACPI function calls at the cost of a small increase in the code size of the
-debug version of the subsystem. With assistance from Alexey Starikovskiy and
+functions. This reduces the cumulative stack use during nested execution
+of
+ACPI function calls at the cost of a small increase in the code size of
+the
+debug version of the subsystem. With assistance from Alexey Starikovskiy
+and
Len Brown.
Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
headers to define a macro that will return the current function name at
-runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by
+runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
+by
the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
-compiler-dependent header, the function name is saved on the CPU stack (one
+compiler-dependent header, the function name is saved on the CPU stack
+(one
pointer per function.) This mechanism is used because apparently there
-exists no standard ANSI-C defined macro that that returns the function name.
+exists no standard ANSI-C defined macro that that returns the function
+name.
Redesigned and reimplemented the "Owner ID" mechanism used to track
namespace objects created/deleted by ACPI tables and control method
-execution. A bitmap is now used to allocate and free the IDs, thus solving
-the wraparound problem present in the previous implementation. The size of
+execution. A bitmap is now used to allocate and free the IDs, thus
+solving
+the wraparound problem present in the previous implementation. The size
+of
the namespace node descriptor was reduced by 2 bytes as a result (Alexey
Starikovskiy).
-Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield
+Removed the UINT32_BIT and UINT16_BIT types that were used for the
+bitfield
flag definitions within the headers for the predefined ACPI tables. These
-have been replaced by UINT8_BIT in order to increase the code portability of
+have been replaced by UINT8_BIT in order to increase the code portability
+of
the subsystem. If the use of UINT8 remains a problem, we may be forced to
eliminate bitfields entirely because of a lack of portability.
-Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This
-is a frequently used function and this improvement increases the performance
+Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
+This
+is a frequently used function and this improvement increases the
+performance
of the entire subsystem (Alexey Starikovskiy).
Fixed several possible memory leaks and the inverse - premature object
deletion (Alexey Starikovskiy).
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
@@ -4762,11 +8470,12 @@
24 June 2005. Summary of changes for version 20050624:
1) ACPI CA Core Subsystem:
Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
-the host-defined cache object. This allows the OSL implementation to define
+the host-defined cache object. This allows the OSL implementation to
+define
and type this object in any manner desired, simplifying the OSL
implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
Linux, and should be defined in the OS-specific header file for other
operating systems as required.
@@ -4774,37 +8483,47 @@
requested object as the function return (instead of ACPI_STATUS.) This
change was made for performance reasons, since this is the purpose of the
interface in the first place. AcpiOsAcquireObject is now similar to the
AcpiOsAllocate interface.
-Implemented a new AML debugger command named Businfo. This command displays
-information about all devices that have an associate _PRT object. The _ADR,
+Implemented a new AML debugger command named Businfo. This command
+displays
+information about all devices that have an associate _PRT object. The
+_ADR,
_HID, _UID, and _CID are displayed for these devices.
-Modified the initialization sequence in AcpiInitializeSubsystem to call the
-OSL interface AcpiOslInitialize first, before any local initialization. This
+Modified the initialization sequence in AcpiInitializeSubsystem to call
+the
+OSL interface AcpiOslInitialize first, before any local initialization.
+This
change was required because the global initialization now calls OSL
interfaces.
-Enhanced the Dump command to display the entire contents of Package objects
+Enhanced the Dump command to display the entire contents of Package
+objects
(including all sub-objects and their values.)
Restructured the code base to split some files because of size and/or
-because the code logically belonged in a separate file. New files are listed
-below. All makefiles and project files included in the ACPI CA release have
+because the code logically belonged in a separate file. New files are
+listed
+below. All makefiles and project files included in the ACPI CA release
+have
been updated.
utilities/utcache.c /* Local cache interfaces */
utilities/utmutex.c /* Local mutex support */
utilities/utstate.c /* State object support */
interpreter/parser/psloop.c /* Main AML parse loop */
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
@@ -4813,70 +8532,89 @@
Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
2) iASL Compiler/Disassembler:
-Fixed a regression introduced in version 20050513 where the use of a Package
+Fixed a regression introduced in version 20050513 where the use of a
+Package
object within a Case() statement caused a compile time exception. The
original behavior has been restored (a Match() operator is emitted.)
----------------------------------------
17 June 2005. Summary of changes for version 20050617:
1) ACPI CA Core Subsystem:
-Moved the object cache operations into the OS interface layer (OSL) to allow
+Moved the object cache operations into the OS interface layer (OSL) to
+allow
the host OS to handle these operations if desired (for example, the Linux
-OSL will invoke the slab allocator). This support is optional; the compile
-time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache
+OSL will invoke the slab allocator). This support is optional; the
+compile
+time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
+cache
code in the ACPI CA core. The new OSL interfaces are shown below. See
utalloc.c for an example implementation, and acpiosxf.h for the exact
interface definitions. With assistance from Alexey Starikovskiy.
AcpiOsCreateCache
AcpiOsDeleteCache
AcpiOsPurgeCache
AcpiOsAcquireObject
AcpiOsReleaseObject
-Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return
+Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
+return
and restore a flags parameter. This fits better with many OS lock models.
Note: the current execution state (interrupt handler or not) is no longer
-passed to these interfaces. If necessary, the OSL must determine this state
+passed to these interfaces. If necessary, the OSL must determine this
+state
by itself, a simple and fast operation. With assistance from Alexey
Starikovskiy.
Fixed a problem in the ACPI table handling where a valid XSDT was assumed
-present if the revision of the RSDP was 2 or greater. According to the ACPI
+present if the revision of the RSDP was 2 or greater. According to the
+ACPI
specification, the XSDT is optional in all cases, and the table manager
therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
-Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain
+Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
+contain
only the RSDT.
-Fixed an interpreter problem with the Mid() operator in the case of an input
-string where the resulting output string is of zero length. It now correctly
+Fixed an interpreter problem with the Mid() operator in the case of an
+input
+string where the resulting output string is of zero length. It now
+correctly
returns a valid, null terminated string object instead of a string object
with a null pointer.
-Fixed a problem with the control method argument handling to allow a store
-to an Arg object that already contains an object of type Device. The Device
+Fixed a problem with the control method argument handling to allow a
+store
+to an Arg object that already contains an object of type Device. The
+Device
object is now correctly overwritten. Previously, an error was returned.
-Enhanced the debugger Find command to emit object values in addition to the
-found object pathnames. The output format is the same as the dump namespace
+Enhanced the debugger Find command to emit object values in addition to
+the
+found object pathnames. The output format is the same as the dump
+namespace
command.
-Enhanced the debugger Set command. It now has the ability to set the value
-of any Named integer object in the namespace (Previously, only method locals
+Enhanced the debugger Set command. It now has the ability to set the
+value
+of any Named integer object in the namespace (Previously, only method
+locals
and args could be set.)
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
@@ -4885,19 +8623,22 @@
Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
2) iASL Compiler/Disassembler:
-Fixed a regression in the disassembler where if/else/while constructs were
+Fixed a regression in the disassembler where if/else/while constructs
+were
output incorrectly. This problem was introduced in the previous release
(20050526). This problem also affected the single-step disassembly in the
debugger.
-Fixed a problem where compiling the reserved _OSI method would randomly (but
+Fixed a problem where compiling the reserved _OSI method would randomly
+(but
rarely) produce compile errors.
-Enhanced the disassembler to emit compilable code in the face of incorrect
+Enhanced the disassembler to emit compilable code in the face of
+incorrect
AML resource descriptors. If the optional ResourceSourceIndex is present,
but the ResourceSource is not, do not emit the ResourceSourceIndex in the
disassembly. Otherwise, the resulting code cannot be compiled without
errors.
@@ -4905,21 +8646,27 @@
26 May 2005. Summary of changes for version 20050526:
1) ACPI CA Core Subsystem:
Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
-the module level (not within a control method.) These opcodes are executed
-exactly once at the time the table is loaded. This type of code was legal up
-until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in
-order to provide backwards compatibility with earlier BIOS implementations.
+the module level (not within a control method.) These opcodes are
+executed
+exactly once at the time the table is loaded. This type of code was legal
+up
+until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
+in
+order to provide backwards compatibility with earlier BIOS
+implementations.
This eliminates the "Encountered executable code at module level" warning
that was previously generated upon detection of such code.
Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
inadvertently be generated during the lookup of namespace objects in the
-second pass parse of ACPI tables and control methods. It appears that this
-problem could occur during the resolution of forward references to namespace
+second pass parse of ACPI tables and control methods. It appears that
+this
+problem could occur during the resolution of forward references to
+namespace
objects.
Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
allows the deadlock detection debug code to be compiled out in the normal
@@ -4928,19 +8675,23 @@
Implemented a handful of miscellaneous fixes for possible memory leaks on
error conditions and error handling control paths. These fixes were
suggested by FreeBSD and the Coverity Prevent source code analysis tool.
-Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c)
+Added a check for a null RSDT pointer in AcpiGetFirmwareTable
+(tbxfroot.c)
to prevent a fault in this error case.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
@@ -4951,66 +8702,84 @@
2) iASL Compiler/Disassembler:
Implemented support to allow Type 1 and Type 2 ASL operators to appear at
the module level (not within a control method.) These operators will be
-executed once at the time the table is loaded. This type of code was legal
+executed once at the time the table is loaded. This type of code was
+legal
up until the release of ACPI 2.0B (2002) and is now supported by the iASL
-compiler in order to provide backwards compatibility with earlier BIOS ASL
+compiler in order to provide backwards compatibility with earlier BIOS
+ASL
code.
The ACPI integer width (specified via the table revision ID or the -r
-override, 32 or 64 bits) is now used internally during compile-time constant
+override, 32 or 64 bits) is now used internally during compile-time
+constant
folding to ensure that constants are truncated to 32 bits if necessary.
-Previously, the revision ID value was only emitted in the AML table header.
+Previously, the revision ID value was only emitted in the AML table
+header.
-An error message is now generated for the Mutex and Method operators if the
+An error message is now generated for the Mutex and Method operators if
+the
SyncLevel parameter is outside the legal range of 0 through 15.
-Fixed a problem with the Method operator ParameterTypes list handling (ACPI
-3.0). Previously, more than 2 types or 2 arguments generated a syntax error.
+Fixed a problem with the Method operator ParameterTypes list handling
+(ACPI
+3.0). Previously, more than 2 types or 2 arguments generated a syntax
+error.
The actual underlying implementation of method argument typechecking is
still under development, however.
----------------------------------------
13 May 2005. Summary of changes for version 20050513:
1) ACPI CA Core Subsystem:
-Implemented support for PCI Express root bridges -- added support for device
+Implemented support for PCI Express root bridges -- added support for
+device
PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
-The interpreter now automatically truncates incoming 64-bit constants to 32
-bits if currently executing out of a 32-bit ACPI table (Revision < 2). This
+The interpreter now automatically truncates incoming 64-bit constants to
+32
+bits if currently executing out of a 32-bit ACPI table (Revision < 2).
+This
also affects the iASL compiler constant folding. (Note: as per below, the
iASL compiler no longer allows 64-bit constants within 32-bit tables.)
Fixed a problem where string and buffer objects with "static" pointers
(pointers to initialization data within an ACPI table) were not handled
-consistently. The internal object copy operation now always copies the data
+consistently. The internal object copy operation now always copies the
+data
to a newly allocated buffer, regardless of whether the source object is
static or not.
Fixed a problem with the FromBCD operator where an implicit result
-conversion was improperly performed while storing the result to the target
+conversion was improperly performed while storing the result to the
+target
operand. Since this is an "explicit conversion" operator, the implicit
conversion should never be performed on the output.
Fixed a problem with the CopyObject operator where a copy to an existing
-named object did not always completely overwrite the existing object stored
-at name. Specifically, a buffer-to-buffer copy did not delete the existing
+named object did not always completely overwrite the existing object
+stored
+at name. Specifically, a buffer-to-buffer copy did not delete the
+existing
buffer.
-Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and
+Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
+and
structs for consistency.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
@@ -5019,21 +8788,25 @@
Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
2) iASL Compiler/Disassembler:
-The compiler now emits a warning if an attempt is made to generate a 64-bit
-integer constant from within a 32-bit ACPI table (Revision < 2). The integer
+The compiler now emits a warning if an attempt is made to generate a 64-
+bit
+integer constant from within a 32-bit ACPI table (Revision < 2). The
+integer
is truncated to 32 bits.
Fixed a problem with large package objects: if the static length of the
package is greater than 255, the "variable length package" opcode is
emitted. Previously, this caused an error. This requires an update to the
-ACPI spec, since it currently (incorrectly) states that packages larger than
+ACPI spec, since it currently (incorrectly) states that packages larger
+than
255 elements are not allowed.
-The disassembler now correctly handles variable length packages and packages
+The disassembler now correctly handles variable length packages and
+packages
larger than 255 elements.
----------------------------------------
08 April 2005. Summary of changes for version 20050408:
@@ -5041,35 +8814,45 @@
Fixed three cases in the interpreter where an "index" argument to an ASL
function was still (internally) 32 bits instead of the required 64 bits.
This was the Index argument to the Index, Mid, and Match operators.
-The "strupr" function is now permanently local (AcpiUtStrupr), since this is
+The "strupr" function is now permanently local (AcpiUtStrupr), since this
+is
not a POSIX-defined function and not present in most kernel-level C
-libraries. All references to the C library strupr function have been removed
+libraries. All references to the C library strupr function have been
+removed
from the headers.
-Completed the deployment of static functions/prototypes. All prototypes with
-the static attribute have been moved from the headers to the owning C file.
+Completed the deployment of static functions/prototypes. All prototypes
+with
+the static attribute have been moved from the headers to the owning C
+file.
Implemented an extract option (-e) for the AcpiBin utility (AML binary
-utility). This option allows the utility to extract individual ACPI tables
+utility). This option allows the utility to extract individual ACPI
+tables
from the output of AcpiDmp. It provides the same functionality of the
acpixtract.pl perl script without the worry of setting the correct perl
-options. AcpiBin runs on Windows and has not yet been generated/validated in
+options. AcpiBin runs on Windows and has not yet been generated/validated
+in
the Linux/Unix environment (but should be soon).
Updated and fixed the table dump option for AcpiBin (-d). This option
-converts a single ACPI table to a hex/ascii file, similar to the output of
+converts a single ACPI table to a hex/ascii file, similar to the output
+of
AcpiDmp.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
@@ -5078,37 +8861,43 @@
Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
2) iASL Compiler/Disassembler:
-Disassembler fix: Added a check to ensure that the table length found in the
-ACPI table header within the input file is not longer than the actual input
+Disassembler fix: Added a check to ensure that the table length found in
+the
+ACPI table header within the input file is not longer than the actual
+input
file size. This indicates some kind of file or table corruption.
----------------------------------------
29 March 2005. Summary of changes for version 20050329:
1) ACPI CA Core Subsystem:
-An error is now generated if an attempt is made to create a Buffer Field of
+An error is now generated if an attempt is made to create a Buffer Field
+of
length zero (A CreateField with a length operand of zero.)
-The interpreter now issues a warning whenever executable code at the module
+The interpreter now issues a warning whenever executable code at the
+module
level is detected during ACPI table load. This will give some idea of the
prevalence of this type of code.
Implemented support for references to named objects (other than control
methods) within package objects.
-Enhanced package object output for the debug object. Package objects are now
+Enhanced package object output for the debug object. Package objects are
+now
completely dumped, showing all elements.
Enhanced miscellaneous object output for the debug object. Any object can
now be written to the debug object (for example, a device object can be
written, and the type of the object will be displayed.)
-The "static" qualifier has been added to all local functions across both the
+The "static" qualifier has been added to all local functions across both
+the
core subsystem and the iASL compiler.
The number of "long" lines (> 80 chars) within the source has been
significantly reduced, by about 1/3.
@@ -5118,15 +8907,18 @@
Two new header files have been added, acopcode.h and acnames.h.
Removed several obsolete functions that were no longer used.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
@@ -5137,72 +8929,92 @@
2) iASL Compiler/Disassembler:
Fixed a problem with the resource descriptor generation/support. For the
-ResourceSourceIndex and the ResourceSource fields, both must be present, or
+ResourceSourceIndex and the ResourceSource fields, both must be present,
+or
both must be not present - can't have one without the other.
-The compiler now returns non-zero from the main procedure if any errors have
+The compiler now returns non-zero from the main procedure if any errors
+have
occurred during the compilation.
----------------------------------------
09 March 2005. Summary of changes for version 20050309:
1) ACPI CA Core Subsystem:
-The string-to-buffer implicit conversion code has been modified again after
-a change to the ACPI specification. In order to match the behavior of the
-other major ACPI implementation, the target buffer is no longer truncated if
+The string-to-buffer implicit conversion code has been modified again
+after
+a change to the ACPI specification. In order to match the behavior of
+the
+other major ACPI implementation, the target buffer is no longer truncated
+if
the source string is smaller than an existing target buffer. This change
requires an update to the ACPI spec, and should eliminate the recent
AE_AML_BUFFER_LIMIT issues.
-The "implicit return" support was rewritten to a new algorithm that solves
-the general case. Rather than attempt to determine when a method is about to
-exit, the result of every ASL operator is saved momentarily until the very
+The "implicit return" support was rewritten to a new algorithm that
+solves
+the general case. Rather than attempt to determine when a method is about
+to
+exit, the result of every ASL operator is saved momentarily until the
+very
next ASL operator is executed. Therefore, no matter how the method exits,
there will always be a saved implicit return value. This feature is only
-enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate
+enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
+eliminate
AE_AML_NO_RETURN_VALUE errors when enabled.
-Implemented implicit conversion support for the predicate (operand) of the
-If, Else, and While operators. String and Buffer arguments are automatically
+Implemented implicit conversion support for the predicate (operand) of
+the
+If, Else, and While operators. String and Buffer arguments are
+automatically
converted to Integers.
Changed the string-to-integer conversion behavior to match the new ACPI
errata: "If no integer object exists, a new integer is created. The ASCII
string is interpreted as a hexadecimal constant. Each string character is
interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
-with the first character as the most significant digit, and ending with the
-first non-hexadecimal character or end-of-string." This means that the first
+with the first character as the most significant digit, and ending with
+the
+first non-hexadecimal character or end-of-string." This means that the
+first
non-hex character terminates the conversion and this is the code that was
changed.
-Fixed a problem where the ObjectType operator would fail (fault) when used
+Fixed a problem where the ObjectType operator would fail (fault) when
+used
on an Index of a Package which pointed to a null package element. The
operator now properly returns zero (Uninitialized) in this case.
Fixed a problem where the While operator used excessive memory by not
-properly popping the result stack during execution. There was no memory leak
+properly popping the result stack during execution. There was no memory
+leak
after execution, however. (Code provided by Valery Podrezov.)
-Fixed a problem where references to control methods within Package objects
+Fixed a problem where references to control methods within Package
+objects
caused the method to be invoked, instead of producing a reference object
pointing to the method.
-Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to
+Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
+to
improve performance and reduce code size. (Code provided by Alexey
Starikovskiy.)
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
@@ -5212,47 +9024,56 @@
2) iASL Compiler/Disassembler:
Fixed a problem with the Return operator with no arguments. Since the AML
-grammar for the byte encoding requires an operand for the Return opcode, the
+grammar for the byte encoding requires an operand for the Return opcode,
+the
compiler now emits a Return(Zero) for this case. An ACPI specification
update has been written for this case.
For tables other than the DSDT, namepath optimization is automatically
-disabled. This is because SSDTs can be loaded anywhere in the namespace, the
+disabled. This is because SSDTs can be loaded anywhere in the namespace,
+the
compiler has no knowledge of where, and thus cannot optimize namepaths.
Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
inadvertently omitted from the ACPI specification, and will require an
update to the spec.
-The source file scan for ASCII characters is now optional (-a). This change
+The source file scan for ASCII characters is now optional (-a). This
+change
was made because some vendors place non-ascii characters within comments.
However, the scan is simply a brute-force byte compare to ensure all
characters in the file are in the range 0x00 to 0x7F.
Fixed a problem with the CondRefOf operator where the compiler was
-inappropriately checking for the existence of the target. Since the point of
+inappropriately checking for the existence of the target. Since the point
+of
the operator is to check for the existence of the target at run-time, the
compiler no longer checks for the target existence.
Fixed a problem where errors generated from the internal AML interpreter
during constant folding were not handled properly, causing a fault.
Fixed a problem with overly aggressive range checking for the Stall
-operator. The valid range (max 255) is now only checked if the operand is of
+operator. The valid range (max 255) is now only checked if the operand is
+of
type Integer. All other operand types cannot be statically checked.
-Fixed a problem where control method references within the RefOf, DeRefOf,
-and ObjectType operators were not treated properly. They are now treated as
+Fixed a problem where control method references within the RefOf,
+DeRefOf,
+and ObjectType operators were not treated properly. They are now treated
+as
actual references, not method invocations.
-Fixed and enhanced the "list namespace" option (-ln). This option was broken
+Fixed and enhanced the "list namespace" option (-ln). This option was
+broken
a number of releases ago.
-Improved error handling for the Field, IndexField, and BankField operators.
+Improved error handling for the Field, IndexField, and BankField
+operators.
The compiler now cleanly reports and recovers from errors in the field
component (FieldUnit) list.
Fixed a disassembler problem where the optional ResourceDescriptor fields
TRS and TTP were not always handled correctly.
@@ -5263,40 +9084,48 @@
28 February 2005. Summary of changes for version 20050228:
1) ACPI CA Core Subsystem:
Fixed a problem where the result of an Index() operator (an object
-reference) must increment the reference count on the target object for the
+reference) must increment the reference count on the target object for
+the
life of the object reference.
Implemented AML Interpreter and Debugger support for the new ACPI 3.0
-Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace
+Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
+WordSpace
resource descriptors.
Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
-Space Descriptor" string, indicating interpreter support for the descriptors
+Space Descriptor" string, indicating interpreter support for the
+descriptors
above.
Implemented header support for the new ACPI 3.0 FADT flag bits.
-Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1
+Implemented header support for the new ACPI 3.0 PCI Express bits for the
+PM1
status/enable registers.
Updated header support for the MADT processor local Apic struct and MADT
platform interrupt source struct for new ACPI 3.0 fields.
Implemented header support for the SRAT and SLIT ACPI tables.
-Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag
+Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
+flag
at runtime.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
@@ -5305,51 +9134,65 @@
Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
2) iASL Compiler/Disassembler:
-Fixed a problem with the internal 64-bit String-to-integer conversion with
+Fixed a problem with the internal 64-bit String-to-integer conversion
+with
strings less than two characters long.
Fixed a problem with constant folding where the result of the Index()
-operator can not be considered a constant. This means that Index() cannot be
+operator can not be considered a constant. This means that Index() cannot
+be
a type3 opcode and this will require an update to the ACPI specification.
Disassembler: Implemented support for the TTP, MTP, and TRS resource
-descriptor fields. These fields were inadvertently ignored and not output in
+descriptor fields. These fields were inadvertently ignored and not output
+in
the disassembly of the resource descriptor.
----------------------------------------
11 February 2005. Summary of changes for version 20050211:
1) ACPI CA Core Subsystem:
Implemented ACPI 3.0 support for implicit conversion within the Match()
-operator. MatchObjects can now be of type integer, buffer, or string instead
-of just type integer. Package elements are implicitly converted to the type
+operator. MatchObjects can now be of type integer, buffer, or string
+instead
+of just type integer. Package elements are implicitly converted to the
+type
of the MatchObject. This change aligns the behavior of Match() with the
-behavior of the other logical operators (LLess(), etc.) It also requires an
+behavior of the other logical operators (LLess(), etc.) It also requires
+an
errata change to the ACPI specification as this support was intended for
ACPI 3.0, but was inadvertently omitted.
-Fixed a problem with the internal implicit "to buffer" conversion. Strings
-that are converted to buffers will cause buffer truncation if the string is
-smaller than the target buffer. Integers that are converted to buffers will
+Fixed a problem with the internal implicit "to buffer" conversion.
+Strings
+that are converted to buffers will cause buffer truncation if the string
+is
+smaller than the target buffer. Integers that are converted to buffers
+will
not cause buffer truncation, only zero extension (both as per the ACPI
spec.) The problem was introduced when code was added to truncate the
-buffer, but this should not be performed in all cases, only the string case.
+buffer, but this should not be performed in all cases, only the string
+case.
-Fixed a problem with the Buffer and Package operators where the interpreter
+Fixed a problem with the Buffer and Package operators where the
+interpreter
would get confused if two such operators were used as operands to an ASL
operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
-stack was not being popped after the execution of these operators, resulting
+stack was not being popped after the execution of these operators,
+resulting
in an AE_NO_RETURN_VALUE exception.
Fixed a problem with constructs of the form Store(Index(...),...). The
-reference object returned from Index was inadvertently resolved to an actual
-value. This problem was introduced in version 20050114 when the behavior of
+reference object returned from Index was inadvertently resolved to an
+actual
+value. This problem was introduced in version 20050114 when the behavior
+of
Store() was modified to restrict the object types that can be used as the
source operand (to match the ACPI specification.)
Reduced excessive stack use within the AcpiGetObjectInfo procedure.
@@ -5356,15 +9199,18 @@
Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
@@ -5392,39 +9238,53 @@
version 20050114, and caused an AE_AML_NO_OPERAND exception during an
Acquire() operation on _GL.
The local object cache is now optional, and is disabled by default. Both
AcpiExec and the iASL compiler enable the cache because they run in user
-mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE
+mode and this enhances their performance. #define
+ACPI_ENABLE_OBJECT_CACHE
to enable the local cache.
-Fixed an issue in the internal function AcpiUtEvaluateObject concerning the
-optional "implicit return" support where an error was returned if no return
-object was expected, but one was implicitly returned. AE_OK is now returned
+Fixed an issue in the internal function AcpiUtEvaluateObject concerning
+the
+optional "implicit return" support where an error was returned if no
+return
+object was expected, but one was implicitly returned. AE_OK is now
+returned
in this case and the implicitly returned object is deleted.
-AcpiUtEvaluateObject is only occasionally used, and only to execute reserved
+AcpiUtEvaluateObject is only occasionally used, and only to execute
+reserved
methods such as _STA and _INI where the return type is known up front.
-Fixed a few issues with the internal convert-to-integer code. It now returns
+Fixed a few issues with the internal convert-to-integer code. It now
+returns
an error if an attempt is made to convert a null string, a string of only
-blanks/tabs, or a zero-length buffer. This affects both implicit conversion
+blanks/tabs, or a zero-length buffer. This affects both implicit
+conversion
and explicit conversion via the ToInteger() operator.
-The internal debug code in AcpiUtAcquireMutex has been commented out. It is
-not needed for normal operation and should increase the performance of the
-entire subsystem. The code remains in case it is needed for debug purposes
+The internal debug code in AcpiUtAcquireMutex has been commented out. It
+is
+not needed for normal operation and should increase the performance of
+the
+entire subsystem. The code remains in case it is needed for debug
+purposes
again.
-The AcpiExec source and makefile are included in the Unix/Linux package for
+The AcpiExec source and makefile are included in the Unix/Linux package
+for
the first time.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
@@ -5432,28 +9292,36 @@
Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
2) iASL Compiler/Disassembler:
-Switch/Case support: A warning is now issued if the type of the Switch value
+Switch/Case support: A warning is now issued if the type of the Switch
+value
cannot be determined at compile time. For example, Switch(Arg0) will
-generate the warning, and the type is assumed to be an integer. As per the
-ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the
+generate the warning, and the type is assumed to be an integer. As per
+the
+ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
+the
warning.
Switch/Case support: Implemented support for buffer and string objects as
the switch value. This is an ACPI 3.0 feature, now that LEqual supports
buffers and strings.
-Switch/Case support: The emitted code for the LEqual() comparisons now uses
-the switch value as the first operand, not the second. The case value is now
+Switch/Case support: The emitted code for the LEqual() comparisons now
+uses
+the switch value as the first operand, not the second. The case value is
+now
the second operand, and this allows the case value to be implicitly
converted to the type of the switch value, not the other way around.
-Switch/Case support: Temporary variables are now emitted immediately within
-the control method, not at the global level. This means that there are now
-36 temps available per-method, not 36 temps per-module as was the case with
+Switch/Case support: Temporary variables are now emitted immediately
+within
+the control method, not at the global level. This means that there are
+now
+36 temps available per-method, not 36 temps per-module as was the case
+with
the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
----------------------------------------
14 January 2005. Summary of changes for version 20050114:
@@ -5461,55 +9329,70 @@
the core subsystem, iASL compiler, and the utilities.
1) ACPI CA Core Subsystem:
Fixed an issue with the String-to-Buffer conversion code where the string
-null terminator was not included in the buffer after conversion, but there
-is existing ASL that assumes the string null terminator is included. This is
+null terminator was not included in the buffer after conversion, but
+there
+is existing ASL that assumes the string null terminator is included. This
+is
the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
introduced in the previous version when the code was updated to correctly
-set the converted buffer size as per the ACPI specification. The ACPI spec
-is ambiguous and will be updated to specify that the null terminator must be
+set the converted buffer size as per the ACPI specification. The ACPI
+spec
+is ambiguous and will be updated to specify that the null terminator must
+be
included in the converted buffer. This also affects the ToBuffer() ASL
operator.
Fixed a problem with the Mid() ASL/AML operator where it did not work
-correctly on Buffer objects. Newly created sub-buffers were not being marked
+correctly on Buffer objects. Newly created sub-buffers were not being
+marked
as initialized.
Fixed a problem in AcpiTbFindTable where incorrect string compares were
-performed on the OemId and OemTableId table header fields. These fields are
+performed on the OemId and OemTableId table header fields. These fields
+are
not null terminated, so strncmp is now used instead of strcmp.
Implemented a restriction on the Store() ASL/AML operator to align the
-behavior with the ACPI specification. Previously, any object could be used
-as the source operand. Now, the only objects that may be used are Integers,
+behavior with the ACPI specification. Previously, any object could be
+used
+as the source operand. Now, the only objects that may be used are
+Integers,
Buffers, Strings, Packages, Object References, and DDB Handles. If
necessary, the original behavior can be restored by enabling the
EnableInterpreterSlack flag.
-Enhanced the optional "implicit return" support to allow an implicit return
+Enhanced the optional "implicit return" support to allow an implicit
+return
value from methods that are invoked externally via the AcpiEvaluateObject
interface. This enables implicit returns from the _STA and _INI methods,
for example.
-Changed the Revision() ASL/AML operator to return the current version of the
-AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned
+Changed the Revision() ASL/AML operator to return the current version of
+the
+AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
+returned
the supported ACPI version (This is the function of the _REV method).
-Updated the _REV predefined method to return the currently supported version
+Updated the _REV predefined method to return the currently supported
+version
of ACPI, now 3.
Implemented batch mode option for the AcpiExec utility (-b).
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
@@ -5523,27 +9406,33 @@
ACPI 3.0 support is nearing completion in both the iASL compiler and the
ACPI CA core subsystem.
1) ACPI CA Core Subsystem:
-Fixed a problem in the ToDecimalString operator where the resulting string
+Fixed a problem in the ToDecimalString operator where the resulting
+string
length was incorrectly calculated. The length is now calculated exactly,
eliminating incorrect AE_STRING_LIMIT exceptions.
-Fixed a problem in the ToHexString operator to allow a maximum 200 character
+Fixed a problem in the ToHexString operator to allow a maximum 200
+character
string to be produced.
-Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy
+Fixed a problem in the internal string-to-buffer and buffer-to-buffer
+copy
routine where the length of the resulting buffer was not truncated to the
new size (if the target buffer already existed).
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
@@ -5556,11 +9445,12 @@
Implemented the new ACPI 3.0 resource template macros - DWordSpace,
ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
Includes support in the disassembler.
-Implemented support for the new (ACPI 3.0) parameter to the Register macro,
+Implemented support for the new (ACPI 3.0) parameter to the Register
+macro,
AccessSize.
Fixed a problem where the _HE resource name for the Interrupt macro was
referencing bit 0 instead of bit 1.
@@ -5569,33 +9459,38 @@
Fixed a problem with the predefined resource descriptor names where
incorrect AML code was generated if the offset within the resource buffer
was 0 or 1. The optimizer shortened the AML code to a single byte opcode
but did not update the surrounding package lengths.
-Changes to the Dma macro: All channels within the channel list must be in
+Changes to the Dma macro: All channels within the channel list must be
+in
the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
optional (default is BusMaster).
Implemented check for maximum 7 data bytes for the VendorShort macro.
-The ReadWrite parameter is now optional for the Memory32 and similar macros.
+The ReadWrite parameter is now optional for the Memory32 and similar
+macros.
----------------------------------------
03 December 2004. Summary of changes for version 20041203:
1) ACPI CA Core Subsystem:
-The low-level field insertion/extraction code (exfldio) has been completely
+The low-level field insertion/extraction code (exfldio) has been
+completely
rewritten to eliminate unnecessary complexity, bugs, and boundary
conditions.
-Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString
+Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
+ToDecimalString
operators where the input operand could be inadvertently deleted if no
conversion was necessary (e.g., if the input to ToInteger was an Integer
object.)
-Fixed a problem with the ToDecimalString and ToHexString where an incorrect
+Fixed a problem with the ToDecimalString and ToHexString where an
+incorrect
exception code was returned if the resulting string would be > 200 chars.
AE_STRING_LIMIT is now returned.
Fixed a problem with the Concatenate operator where AE_OK was always
returned, even if the operation failed.
@@ -5602,15 +9497,18 @@
Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
semaphores to be allocated.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
@@ -5622,43 +9520,55 @@
2) iASL Compiler/Disassembler:
Fixed typechecking for the ObjectType and SizeOf operators. Problem was
recently introduced in 20041119.
-Fixed a problem with the ToUUID macro where the upper nybble of each buffer
+Fixed a problem with the ToUUID macro where the upper nybble of each
+buffer
byte was inadvertently set to zero.
----------------------------------------
19 November 2004. Summary of changes for version 20041119:
1) ACPI CA Core Subsystem:
-Fixed a problem in the internal ConvertToInteger routine where new integers
-were not truncated to 32 bits for 32-bit ACPI tables. This routine converts
+Fixed a problem in the internal ConvertToInteger routine where new
+integers
+were not truncated to 32 bits for 32-bit ACPI tables. This routine
+converts
buffers and strings to integers.
-Implemented support to store a value to an Index() on a String object. This
+Implemented support to store a value to an Index() on a String object.
+This
is an ACPI 2.0 feature that had not yet been implemented.
-Implemented new behavior for storing objects to individual package elements
-(via the Index() operator). The previous behavior was to invoke the implicit
+Implemented new behavior for storing objects to individual package
+elements
+(via the Index() operator). The previous behavior was to invoke the
+implicit
conversion rules if an object was already present at the index. The new
-behavior is to simply delete any existing object and directly store the new
-object. Although the ACPI specification seems unclear on this subject, other
+behavior is to simply delete any existing object and directly store the
+new
+object. Although the ACPI specification seems unclear on this subject,
+other
ACPI implementations behave in this manner. (This is the root of the
AE_BAD_HEX_CONSTANT issue.)
-Modified the RSDP memory scan mechanism to support the extended checksum for
+Modified the RSDP memory scan mechanism to support the extended checksum
+for
ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
RSDP signature is found with a valid checksum.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
@@ -5674,34 +9584,42 @@
----------------------------------------
05 November 2004. Summary of changes for version 20041105:
1) ACPI CA Core Subsystem:
-Implemented support for FADT revision 2. This was an interim table (between
+Implemented support for FADT revision 2. This was an interim table
+(between
ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
Implemented optional support to allow uninitialized LocalX and ArgX
-variables in a control method. The variables are initialized to an Integer
+variables in a control method. The variables are initialized to an
+Integer
object with a value of zero. This support is enabled by setting the
AcpiGbl_EnableInterpreterSlack flag to TRUE.
-Implemented support for Integer objects for the SizeOf operator. Either 4
-or 8 is returned, depending on the current integer size (32-bit or 64-bit,
+Implemented support for Integer objects for the SizeOf operator. Either
+4
+or 8 is returned, depending on the current integer size (32-bit or 64-
+bit,
depending on the parent table revision).
-Fixed a problem in the implementation of the SizeOf and ObjectType operators
+Fixed a problem in the implementation of the SizeOf and ObjectType
+operators
where the operand was resolved to a value too early, causing incorrect
return values for some objects.
Fixed some possible memory leaks during exceptional conditions.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
@@ -5739,39 +9657,48 @@
- External interfaces to the ACPI subsystem
1) ACPI CA Core Subsystem:
-Fixed two alignment issues on 64-bit platforms - within debug statements in
-AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address
+Fixed two alignment issues on 64-bit platforms - within debug statements
+in
+AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
+Address
field within the non-aligned ACPI generic address structure.
Fixed a problem in the Increment and Decrement operators where incorrect
operand resolution could result in the inadvertent modification of the
original integer when the integer is passed into another method as an
argument and the arg is then incremented/decremented.
-Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit
+Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
+bit
BCD number were truncated during conversion.
-Fixed a problem in the ToDecimal operator where the length of the resulting
-string could be set incorrectly too long if the input operand was a Buffer
+Fixed a problem in the ToDecimal operator where the length of the
+resulting
+string could be set incorrectly too long if the input operand was a
+Buffer
object.
-Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0)
+Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
+(0)
within a buffer would prematurely terminate a compare between buffer
objects.
Added a check for string overflow (>200 characters as per the ACPI
specification) during the Concatenate operator with two string operands.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
@@ -5784,15 +9711,18 @@
2) iASL Compiler/Disassembler:
Allow the use of the ObjectType operator on uninitialized Locals and Args
(returns 0 as per the ACPI specification).
-Fixed a problem where the compiler would fault if there was a syntax error
+Fixed a problem where the compiler would fault if there was a syntax
+error
in the FieldName of all of the various CreateXXXField operators.
-Disallow the use of lower case letters within the EISAID macro, as per the
-ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where
+Disallow the use of lower case letters within the EISAID macro, as per
+the
+ACPI specification. All EISAID strings must be of the form "UUUNNNN"
+Where
U is an uppercase letter and N is a hex digit.
----------------------------------------
06 October 2004. Summary of changes for version 20041006:
@@ -5801,45 +9731,56 @@
Implemented support for the ACPI 3.0 Timer operator. This ASL function
implements a 64-bit timer with 100 nanosecond granularity.
Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
-implement the ACPI 3.0 Timer operator. This allows the host OS to implement
-the timer with the best clock available. Also, it keeps the core subsystem
+implement the ACPI 3.0 Timer operator. This allows the host OS to
+implement
+the timer with the best clock available. Also, it keeps the core
+subsystem
out of the clock handling business, since the host OS (usually) performs
this function.
Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
functions use a 64-bit address which is part of the packed ACPI Generic
-Address Structure. Since the structure is non-aligned, the alignment macros
+Address Structure. Since the structure is non-aligned, the alignment
+macros
are now used to extract the address to a local variable before use.
-Fixed a problem where the ToInteger operator assumed all input strings were
-hexadecimal. The operator now handles both decimal strings and hex strings
+Fixed a problem where the ToInteger operator assumed all input strings
+were
+hexadecimal. The operator now handles both decimal strings and hex
+strings
(prefixed with "0x").
Fixed a problem where the string length in the string object created as a
result of the internal ConvertToString procedure could be incorrect. This
-potentially affected all implicit conversions and also the ToDecimalString
+potentially affected all implicit conversions and also the
+ToDecimalString
and ToHexString operators.
Fixed two problems in the ToString operator. If the length parameter was
zero, an incorrect string object was created and the value of the input
length parameter was inadvertently changed from zero to Ones.
-Fixed a problem where the optional ResourceSource string in the ExtendedIRQ
+Fixed a problem where the optional ResourceSource string in the
+ExtendedIRQ
resource macro was ignored.
-Simplified the interfaces to the internal division functions, reducing code
+Simplified the interfaces to the internal division functions, reducing
+code
size and complexity.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
@@ -5850,15 +9791,17 @@
2) iASL Compiler/Disassembler:
Implemented support for the ACPI 3.0 Timer operator.
-Fixed a problem where the Default() operator was inadvertently ignored in a
+Fixed a problem where the Default() operator was inadvertently ignored in
+a
Switch/Case block. This was a problem in the translation of the Switch
statement to If...Else pairs.
-Added support to allow a standalone Return operator, with no parentheses (or
+Added support to allow a standalone Return operator, with no parentheses
+(or
operands).
Fixed a problem with code generation for the ElseIf operator where the
translated Else...If parse tree was improperly constructed leading to the
loss of some code.
@@ -5866,37 +9809,46 @@
----------------------------------------
22 September 2004. Summary of changes for version 20040922:
1) ACPI CA Core Subsystem:
-Fixed a problem with the implementation of the LNot() operator where "Ones"
-was not returned for the TRUE case. Changed the code to return Ones instead
-of (!Arg) which was usually 1. This change affects iASL constant folding for
+Fixed a problem with the implementation of the LNot() operator where
+"Ones"
+was not returned for the TRUE case. Changed the code to return Ones
+instead
+of (!Arg) which was usually 1. This change affects iASL constant folding
+for
this operator also.
-Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not
+Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
+not
initialized properly -- Now zero the entire buffer in this case where the
buffer already exists.
Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
related code considerably. This will require changes/updates to all OS
interface layers (OSLs.)
-Implemented a new external interface, AcpiInstallExceptionHandler, to allow
-a system exception handler to be installed. This handler is invoked upon any
+Implemented a new external interface, AcpiInstallExceptionHandler, to
+allow
+a system exception handler to be installed. This handler is invoked upon
+any
run-time exception that occurs during control method execution.
Added support for the DSDT in AcpiTbFindTable. This allows the
DataTableRegion() operator to access the local copy of the DSDT.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
@@ -5906,64 +9858,82 @@
2) iASL Compiler/Disassembler:
Fixed a problem with constant folding and the LNot operator. LNot was
-returning 1 in the TRUE case, not Ones as per the ACPI specification. This
+returning 1 in the TRUE case, not Ones as per the ACPI specification.
+This
could result in the generation of an incorrect folded/reduced constant.
End-Of-File is now allowed within a "//"-style comment. A parse error no
-longer occurs if such a comment is at the very end of the input ASL source
+longer occurs if such a comment is at the very end of the input ASL
+source
file.
Implemented the "-r" option to override the Revision in the table header.
-The initial use of this option will be to simplify the evaluation of the AML
-interpreter by allowing a single ASL source module to be compiled for either
+The initial use of this option will be to simplify the evaluation of the
+AML
+interpreter by allowing a single ASL source module to be compiled for
+either
32-bit or 64-bit integers.
----------------------------------------
27 August 2004. Summary of changes for version 20040827:
1) ACPI CA Core Subsystem:
- Implemented support for implicit object conversion in the non-numeric
-logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and
+logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
+and
LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
-the second operand is implicitly converted on the fly to match the type of
+the second operand is implicitly converted on the fly to match the type
+of
the first operand. For example:
LEqual (Source1, Source2)
-Source1 and Source2 must each evaluate to an integer, a string, or a buffer.
-The data type of Source1 dictates the required type of Source2. Source2 is
+Source1 and Source2 must each evaluate to an integer, a string, or a
+buffer.
+The data type of Source1 dictates the required type of Source2. Source2
+is
implicitly converted if necessary to match the type of Source1.
-- Updated and corrected the behavior of the string conversion support. The
+- Updated and corrected the behavior of the string conversion support.
+The
rules concerning conversion of buffers to strings (according to the ACPI
specification) are as follows:
ToDecimalString - explicit byte-wise conversion of buffer to string of
-decimal values (0-255) separated by commas. ToHexString - explicit byte-wise
+decimal values (0-255) separated by commas. ToHexString - explicit byte-
+wise
conversion of buffer to string of hex values (0-FF) separated by commas.
-ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte
-copy with no transform except NULL terminated. Any other implicit buffer-to-
-string conversion - byte-wise conversion of buffer to string of hex values
+ToString - explicit byte-wise conversion of buffer to string. Byte-by-
+byte
+copy with no transform except NULL terminated. Any other implicit buffer-
+to-
+string conversion - byte-wise conversion of buffer to string of hex
+values
(0-FF) separated by spaces.
- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
-- Fixed a problem in AcpiNsGetPathnameLength where the returned length was
+- Fixed a problem in AcpiNsGetPathnameLength where the returned length
+was
one byte too short in the case of a node in the root scope. This could
cause a fault during debug output.
-- Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+- Code and Data Size: Current and previous core subsystem library sizes
+are
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
@@ -5981,29 +9951,37 @@
16 August 2004. Summary of changes for version 20040816:
1) ACPI CA Core Subsystem:
Designed and implemented support within the AML interpreter for the so-
-called "implicit return". This support returns the result of the last ASL
+called "implicit return". This support returns the result of the last
+ASL
operation within a control method, in the absence of an explicit Return()
operator. A few machines depend on this behavior, even though it is not
-explicitly supported by the ASL language. It is optional support that can
+explicitly supported by the ASL language. It is optional support that
+can
be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
-Removed support for the PCI_Config address space from the internal low level
+Removed support for the PCI_Config address space from the internal low
+level
hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
-support was not used internally, and would not work correctly anyway because
+support was not used internally, and would not work correctly anyway
+because
the PCI bus number and segment number were not supported. There are
-separate interfaces for PCI configuration space access because of the unique
+separate interfaces for PCI configuration space access because of the
+unique
interface.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
@@ -6022,46 +10000,58 @@
----------------------------------------
15 July 2004. Summary of changes for version 20040715:
1) ACPI CA Core Subsystem:
-Restructured the internal HW GPE interfaces to pass/track the current state
+Restructured the internal HW GPE interfaces to pass/track the current
+state
of interrupts (enabled/disabled) in order to avoid possible deadlock and
increase flexibility of the interfaces.
-Implemented a "lexicographical compare" for String and Buffer objects within
-the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual --
-as per further clarification to the ACPI specification. Behavior is similar
+Implemented a "lexicographical compare" for String and Buffer objects
+within
+the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
+-
+as per further clarification to the ACPI specification. Behavior is
+similar
to C library "strcmp".
Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
external function. In the 32-bit non-debug case, the stack use has been
reduced from 168 bytes to 32 bytes.
-Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack,
+Deployed a new run-time configuration flag,
+AcpiGbl_EnableInterpreterSlack,
whose purpose is to allow the AML interpreter to forgive certain bad AML
constructs. Default setting is FALSE.
-Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO
-support code. If enabled, it allows field access to go beyond the end of a
-region definition if the field is within the region length rounded up to the
+Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
+IO
+support code. If enabled, it allows field access to go beyond the end of
+a
+region definition if the field is within the region length rounded up to
+the
next access width boundary (a common coding error.)
Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
-ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these
+ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
+these
symbols are lowercased by the latest version of the AcpiSrc tool.
The prototypes for the PCI interfaces in acpiosxf.h have been updated to
rename "Register" to simply "Reg" to prevent certain compilers from
complaining.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
@@ -6072,15 +10062,17 @@
2) iASL Compiler/Disassembler:
Implemented full support for Package objects within the Case() operator.
Note: The Break() operator is currently not supported within Case blocks
-(TermLists) as there is some question about backward compatibility with ACPI
+(TermLists) as there is some question about backward compatibility with
+ACPI
1.0 interpreters.
-Fixed a problem where complex terms were not supported properly within the
+Fixed a problem where complex terms were not supported properly within
+the
Switch() operator.
Eliminated extraneous warning for compiler-emitted reserved names of the
form "_T_x". (Used in Switch/Case operators.)
@@ -6091,26 +10083,31 @@
----------------------------------------
15 June 2004. Summary of changes for version 20040615:
1) ACPI CA Core Subsystem:
-Implemented support for Buffer and String objects (as per ACPI 2.0) for the
+Implemented support for Buffer and String objects (as per ACPI 2.0) for
+the
following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
LLessEqual.
All directory names in the entire source package are lower case, as they
were in earlier releases.
-Implemented "Disassemble" command in the AML debugger that will disassemble
+Implemented "Disassemble" command in the AML debugger that will
+disassemble
a single control method.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
@@ -6120,40 +10117,48 @@
Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
2) iASL Compiler/Disassembler:
-Implemented support for Buffer and String objects (as per ACPI 2.0) for the
+Implemented support for Buffer and String objects (as per ACPI 2.0) for
+the
following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
LLessEqual.
All directory names in the entire source package are lower case, as they
were in earlier releases.
Fixed a fault when using the -g or -d<nofilename> options if the FADT was
not found.
-Fixed an issue with the Windows version of the compiler where later versions
+Fixed an issue with the Windows version of the compiler where later
+versions
of Windows place the FADT in the registry under the name "FADT" and not
"FACP" as earlier versions did. This applies when using the -g or -
d<nofilename> options. The compiler now looks for both strings as
necessary.
-Fixed a problem with compiler namepath optimization where a namepath within
-the Scope() operator could not be optimized if the namepath was a subpath of
+Fixed a problem with compiler namepath optimization where a namepath
+within
+the Scope() operator could not be optimized if the namepath was a subpath
+of
the current scope path.
----------------------------------------
27 May 2004. Summary of changes for version 20040527:
1) ACPI CA Core Subsystem:
-Completed a new design and implementation for EBDA (Extended BIOS Data Area)
-support in the RSDP scan code. The original code improperly scanned for the
-EBDA by simply scanning from memory location 0 to 0x400. The correct method
+Completed a new design and implementation for EBDA (Extended BIOS Data
+Area)
+support in the RSDP scan code. The original code improperly scanned for
+the
+EBDA by simply scanning from memory location 0 to 0x400. The correct
+method
is to first obtain the EBDA pointer from within the BIOS data area, then
-scan 1K of memory starting at the EBDA pointer. There appear to be few if
+scan 1K of memory starting at the EBDA pointer. There appear to be few
+if
any machines that place the RSDP in the EBDA, however.
Integrated a fix for a possible fault during evaluation of BufferField
arguments. Obsolete code that was causing the problem was removed.
@@ -6164,15 +10169,18 @@
Rolled in a couple of changes to the FreeBSD-specific header.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
@@ -6181,11 +10189,12 @@
Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
2) iASL Compiler/Disassembler:
-Fixed a generation warning produced by some overly-verbose compilers for a
+Fixed a generation warning produced by some overly-verbose compilers for
+a
64-bit constant.
----------------------------------------
14 May 2004. Summary of changes for version 20040514:
@@ -6195,34 +10204,41 @@
during and after GPE method execution. Result of 04/27 changes.
Removed extra "clear all GPEs" when sleeping/waking.
Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
-AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to
+AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
+to
the new AcpiEv* calls as appropriate.
-ACPI_OS_NAME was removed from the OS-specific headers. The default name is
-now "Microsoft Windows NT" for maximum compatibility. However this can be
+ACPI_OS_NAME was removed from the OS-specific headers. The default name
+is
+now "Microsoft Windows NT" for maximum compatibility. However this can
+be
changed by modifying the acconfig.h file.
Allow a single invocation of AcpiInstallNotifyHandler for a handler that
traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
Run _INI methods on ThermalZone objects. This is against the ACPI
-specification, but there is apparently ASL code in the field that has these
+specification, but there is apparently ASL code in the field that has
+these
_INI methods, and apparently "other" AML interpreters execute them.
Performed a full 16/32/64 bit lint that resulted in some small changes.
Added a sleep simulation command to the AML debugger to test sleep code.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
@@ -6234,45 +10250,59 @@
27 April 2004. Summary of changes for version 20040427:
1) ACPI CA Core Subsystem:
Completed a major overhaul of the GPE handling within ACPI CA. There are
-now three types of GPEs: wake-only, runtime-only, and combination wake/run.
+now three types of GPEs: wake-only, runtime-only, and combination
+wake/run.
The only GPEs allowed to be combination wake/run are for button-style
-devices such as a control-method power button, control-method sleep button,
-or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not
+devices such as a control-method power button, control-method sleep
+button,
+or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
+not
referenced by any _PRW methods are marked for "runtime" and hardware
-enabled. Any GPE that is referenced by a _PRW method is marked for "wake"
+enabled. Any GPE that is referenced by a _PRW method is marked for
+"wake"
(and disabled at runtime). However, at sleep time, only those GPEs that
-have been specifically enabled for wake via the AcpiEnableGpe interface will
+have been specifically enabled for wake via the AcpiEnableGpe interface
+will
actually be hardware enabled.
-A new external interface has been added, AcpiSetGpeType(), that is meant to
-be used by device drivers to force a GPE to a particular type. It will be
+A new external interface has been added, AcpiSetGpeType(), that is meant
+to
+be used by device drivers to force a GPE to a particular type. It will
+be
especially useful for the drivers for the button devices mentioned above.
Completed restructuring of the ACPI CA initialization sequence so that
-default operation region handlers are installed before GPEs are initialized
-and the _PRW methods are executed. This will prevent errors when the _PRW
+default operation region handlers are installed before GPEs are
+initialized
+and the _PRW methods are executed. This will prevent errors when the
+_PRW
methods attempt to access system memory or I/O space.
-GPE enable/disable no longer reads the GPE enable register. We now keep the
+GPE enable/disable no longer reads the GPE enable register. We now keep
+the
enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
thus no longer depend on the hardware to maintain these bits.
Always clear the wake status and fixed/GPE status bits before sleep, even
for state S5.
Improved the AML debugger output for displaying the GPE blocks and their
current status.
-Added new strings for the _OSI method, of the form "Windows 2001 SPx" where
+Added new strings for the _OSI method, of the form "Windows 2001 SPx"
+where
x = 0,1,2,3,4.
-Fixed a problem where the physical address was incorrectly calculated when
-the Load() operator was used to directly load from an Operation Region (vs.
-loading from a Field object.) Also added check for minimum table length for
+Fixed a problem where the physical address was incorrectly calculated
+when
+the Load() operator was used to directly load from an Operation Region
+(vs.
+loading from a Field object.) Also added check for minimum table length
+for
this case.
Fix for multiple mutex acquisition. Restore original thread SyncLevel on
mutex release.
@@ -6281,25 +10311,31 @@
Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
structure for each GPE in the system, so the size of this structure is
important.
-CPU stack requirement reduction: Cleaned up the method execution and object
+CPU stack requirement reduction: Cleaned up the method execution and
+object
evaluation paths so that now a parameter structure is passed, instead of
copying the various method parameters over and over again.
In evregion.c: Correctly exit and reenter the interpreter region if and
-only if dispatching an operation region request to a user-installed handler.
+only if dispatching an operation region request to a user-installed
+handler.
Do not exit/reenter when dispatching to a default handler (e.g., default
system memory or I/O handlers)
-Notes for updating drivers for the new GPE support. The following changes
-must be made to ACPI-related device drivers that are attached to one or more
-GPEs: (This information will be added to the ACPI CA Programmer Reference.)
+Notes for updating drivers for the new GPE support. The following
+changes
+must be made to ACPI-related device drivers that are attached to one or
+more
+GPEs: (This information will be added to the ACPI CA Programmer
+Reference.)
-1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must
+1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
+must
explicitly call AcpiEnableGpe.
2) There is a new interface called AcpiSetGpeType. This should be called
before enabling the GPE. Also, this interface will automatically disable
the GPE if it is currently enabled.
3) AcpiEnableGpe no longer supports a GPE type flag.
@@ -6316,22 +10352,28 @@
If _PRW exists: /* This is a control-method button */
Extract GPE number and possibly GpeDevice
AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
-For all other devices that have _PRWs, we automatically set the GPE type to
-ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This
-must be done on a selective basis, usually requiring some kind of user app
+For all other devices that have _PRWs, we automatically set the GPE type
+to
+ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
+This
+must be done on a selective basis, usually requiring some kind of user
+app
to allow the user to pick the wake devices.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
@@ -6347,29 +10389,34 @@
1) ACPI CA Core Subsystem:
Fixed an interpreter problem where an indirect store through an ArgX
parameter was incorrectly applying the "implicit conversion rules" during
-the store. From the ACPI specification: "If the target is a method local or
+the store. From the ACPI specification: "If the target is a method local
+or
argument (LocalX or ArgX), no conversion is performed and the result is
stored directly to the target". The new behavior is to disable implicit
conversion during ALL stores to an ArgX.
Changed the behavior of the _PRW method scan to ignore any and all errors
returned by a given _PRW. This prevents the scan from aborting from the
failure of any single _PRW.
-Moved the runtime configuration parameters from the global init procedure to
+Moved the runtime configuration parameters from the global init procedure
+to
static variables in acglobal.h. This will allow the host to override the
default values easily.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
@@ -6378,20 +10425,24 @@
Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
2) iASL Compiler/Disassembler:
-iASL now fully disassembles SSDTs. However, External() statements are not
+iASL now fully disassembles SSDTs. However, External() statements are
+not
generated automatically for unresolved symbols at this time. This is a
planned feature for future implementation.
-Fixed a scoping problem in the disassembler that occurs when the type of the
+Fixed a scoping problem in the disassembler that occurs when the type of
+the
target of a Scope() operator is overridden. This problem caused an
incorrectly nested internal namespace to be constructed.
-Any warnings or errors that are emitted during disassembly are now commented
-out automatically so that the resulting file can be recompiled without any
+Any warnings or errors that are emitted during disassembly are now
+commented
+out automatically so that the resulting file can be recompiled without
+any
hand editing.
----------------------------------------
26 March 2004. Summary of changes for version 20040326:
@@ -6398,12 +10449,14 @@
1) ACPI CA Core Subsystem:
Implemented support for "wake" GPEs via interaction between GPEs and the
_PRW methods. Every GPE that is pointed to by one or more _PRWs is
identified as a WAKE GPE and by default will no longer be enabled at
-runtime. Previously, we were blindly enabling all GPEs with a corresponding
-_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We
+runtime. Previously, we were blindly enabling all GPEs with a
+corresponding
+_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
+We
believe this has been the cause of thousands of "spurious" GPEs on some
systems.
This new GPE behavior is can be reverted to the original behavior (enable
ALL GPEs at runtime) via a runtime flag.
@@ -6411,30 +10464,36 @@
Fixed a problem where aliased control methods could not access objects
properly. The proper scope within the namespace was not initialized
(transferred to the target of the aliased method) before executing the
target method.
-Fixed a potential race condition on internal object deletion on the return
+Fixed a potential race condition on internal object deletion on the
+return
object in AcpiEvaluateObject.
Integrated a fix for resource descriptors where both _MEM and _MTP were
being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
wide, 0x0F instead of 0x03.)
-Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a
+Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
+preventing
+a
fault in some cases.
Updated Notify() values for debug statements in evmisc.c
Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
@@ -6451,43 +10510,54 @@
Fixed a problem where errors occurring during the parse phase of control
method execution did not abort cleanly. For example, objects created and
installed in the namespace were not deleted. This caused all subsequent
invocations of the method to return the AE_ALREADY_EXISTS exception.
-Implemented a mechanism to force a control method to "Serialized" execution
+Implemented a mechanism to force a control method to "Serialized"
+execution
if the method attempts to create namespace objects. (The root of the
AE_ALREADY_EXISTS problem.)
Implemented support for the predefined _OSI "internal" control method.
-Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and
-"Windows 2001.1", and can be easily upgraded for new strings as necessary.
+Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
+and
+"Windows 2001.1", and can be easily upgraded for new strings as
+necessary.
This feature will allow "other" operating systems to execute the fully
tested, "Windows" code path through the ASL code
Global Lock Support: Now allows multiple acquires and releases with any
-internal thread. Removed concept of "owning thread" for this special mutex.
+internal thread. Removed concept of "owning thread" for this special
+mutex.
-Fixed two functions that were inappropriately declaring large objects on the
-CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during
+Fixed two functions that were inappropriately declaring large objects on
+the
+CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
+during
method execution considerably.
Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
defined on the machine.
-Implemented two runtime options: One to force all control method execution
-to "Serialized" to mimic Windows behavior, another to disable _OSI support
+Implemented two runtime options: One to force all control method
+execution
+to "Serialized" to mimic Windows behavior, another to disable _OSI
+support
if it causes problems on a given machine.
Code and Data Size: Current and previous core subsystem library sizes are
-shown below. These are the code and data sizes for the acpica.lib produced
+shown below. These are the code and data sizes for the acpica.lib
+produced
by the Microsoft Visual C++ 6.0 compiler, and these values do not include
any ACPI driver or OSPM code. The debug version of the code includes the
-debug output trace mechanism and has a much larger code and data size. Note
-that these values will vary depending on the efficiency of the compiler and
+debug output trace mechanism and has a much larger code and data size.
+Note
+that these values will vary depending on the efficiency of the compiler
+and
the compiler options used during generation.
Previous Release:
Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
@@ -6518,11 +10588,12 @@
Integrated fix for 64-bit alignment issue in acglobal.h by moving two
structures to the beginning of the file.
After wake, clear GPE status register(s) before enabling GPEs.
-After wake, clear/enable power button. (Perhaps we should clear/enable all
+After wake, clear/enable power button. (Perhaps we should clear/enable
+all
fixed events upon wake.)
Fixed a couple of possible memory leaks in the Namespace manager.
Integrated latest acnetbsd.h file.
@@ -6538,19 +10609,22 @@
Fixed a problem where a store of an object into an indexed package could
fail if the store occurs within a different method than the method that
created the package.
-Fixed a problem where the ToDecimal operator could return incorrect results.
+Fixed a problem where the ToDecimal operator could return incorrect
+results.
-Fixed a problem where the CopyObject operator could fail on some of the more
+Fixed a problem where the CopyObject operator could fail on some of the
+more
obscure objects (e.g., Reference objects.)
Improved the output of the Debug object to display buffer, package, and
index objects.
-Fixed a problem where constructs of the form "RefOf (ArgX)" did not return
+Fixed a problem where constructs of the form "RefOf (ArgX)" did not
+return
the expected result.
Added permanent ACPI_REPORT_ERROR macros for all instances of the
ACPI_AML_INTERNAL exception.
@@ -6563,11 +10637,12 @@
each module, thus causing a huge number of diffs. There are a few small
functional changes, however.
1) ACPI CA Core Subsystem:
-Improved error messages when there is a problem finding one or more of the
+Improved error messages when there is a problem finding one or more of
+the
required base ACPI tables
Reintroduced the definition of APIC_HEADER in actbl.h
Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
@@ -6574,11 +10649,12 @@
Removed extraneous reference to NewObj in dsmthdat.c
2) iASL compiler
-Fixed a problem introduced in December that disabled the correct disassembly
+Fixed a problem introduced in December that disabled the correct
+disassembly
of Resource Templates
----------------------------------------
03 December 2003. Summary of changes for version 20031203: