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Diffstat (limited to 'sys/contrib/dev/acpica/CHANGES.txt')
| -rw-r--r-- | sys/contrib/dev/acpica/CHANGES.txt | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/CHANGES.txt b/sys/contrib/dev/acpica/CHANGES.txt index f87c968..3b82a15 100644 --- a/sys/contrib/dev/acpica/CHANGES.txt +++ b/sys/contrib/dev/acpica/CHANGES.txt @@ -1,4 +1,277 @@ ---------------------------------------- +15 November 2002. Summary of changes for version 20021115. + +1) ACPI CA Core Subsystem: + +Fixed a memory leak problem where an error during resolution +of method arguments during a method invocation from another +method failed to cleanup properly by deleting all successfully +resolved argument objects. + +Fixed a problem where the target of the Index() operator was +not correctly constructed if the source object was a package. +This problem has not been detected because the use of a target +operand with Index() is very rare. + +Fixed a problem with the Index() operator where an attempt was +made to delete the operand objects twice. + +Fixed a problem where an attempt was made to delete an operand +twice during execution of the CondRefOf() operator if the +target did not exist. + +Implemented the first of perhaps several internal create +object functions that create and initialize a specific object +type. This consolidates duplicated code wherever the object +is created, thus shrinking the size of the subsystem. + +Implemented improved debug/error messages for errors that +occur during nested method invocations. All executing method +pathnames are displayed (with the error) as the call stack is +unwound - thus simplifying debug. + +Fixed a problem introduced in the 10/02 release that caused +premature deletion of a buffer object if a buffer was used as +an ASL operand where an integer operand is required (Thus +causing an implicit object conversion from Buffer to Integer.) +The change in the 10/02 release was attempting to fix a memory +leak (albeit incorrectly.) + +Code and Data Size: Current 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 the compiler options used during generation. + + Previous Release + Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total + Debug Version: 153.1K Code, 63.3K Data, 216.4K Total + Current Release: + Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total + Debug Version: 152.7K Code, 63.2K Data, 215.5K Total + + +2) Linux + +Changed the implementation of the ACPI semaphores to use +down() instead of down_interruptable(). It is important that +the execution of ACPI control methods not be interrupted by +signals. Methods must run to completion, or the system may be +left in an unknown/unstable state. + +Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not +set. (Shawn Starr) + + +3) iASL Compiler/Disassembler + +Changed the default location of output files. All output +files are now placed in the current directory by default +instead of in the directory of the source file. This change +may affect some existing makefiles, but it brings the behavior +of the compiler in line with other similar tools. The +location of the output files can be overridden with the -p +command line switch. + + +---------------------------------------- +11 November 2002. Summary of changes for version 20021111. + + +0) ACPI Specification 2.0B is released and is now available +at: http://www.acpi.info/index.html + + +1) ACPI CA Core Subsystem: + +Implemented support for the ACPI 2.0 SMBus Operation Regions. +This includes the early detection and handoff of the request +to the SMBus region handler (avoiding all of the complex field +support code), and support for the bidirectional return packet +from an SMBus write operation. This paves the way for the +development of SMBus drivers in each host operating system. + +Fixed a problem where the semaphore WAIT_FOREVER constant was +defined as 32 bits, but must be 16 bits according to the ACPI +specification. This had the side effect of causing ASL +Mutex/Event timeouts even though the ASL code requested a wait +forever. Changed all internal references to the ACPI timeout +parameter to 16 bits to prevent future problems. Changed the +name of WAIT_FOREVER to ACPI_WAIT_FOREVER. + +Code and Data Size: Current 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 the compiler options used during generation. + + Previous Release + Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total + Debug Version: 152.3K Code, 63.0K Data, 215.3K Total + Current Release: + Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total + Debug Version: 153.1K Code, 63.3K Data, 216.4K Total + + +2) Linux + +Module loading/unloading fixes (John Cagle) + + +3) iASL Compiler/Disassembler + +Added support for the SMBBlockProcessCall keyword (ACPI 2.0) + +Implemented support for the disassembly of all SMBus protocol +keywords (SMBQuick, SMBWord, etc.) + +---------------------------------------- +01 November 2002. Summary of changes for version 20021101. + + +1) ACPI CA Core Subsystem: + +Fixed a problem where platforms that have a GPE1 block but no +GPE0 block were not handled correctly. This resulted in a +"GPE overlap" error message. GPE0 is no longer required. + +Removed code added in the previous release that inserted nodes +into the namespace in alphabetical order. This caused some +side-effects on various machines. The root cause of the +problem is still under investigation since in theory, the +internal ordering of the namespace nodes should not matter. + +Enhanced error reporting for the case where a named object is +not found during control method execution. The full ACPI +namepath (name reference) of the object that was not found is +displayed in this case. + +Note: as a result of the overhaul of the namespace object +types in the previous release, the namespace nodes for the +predefined scopes (_TZ, _PR, etc.) are now of the type +ACPI_TYPE_LOCAL_SCOPE instead of ACPI_TYPE_ANY. This +simplifies the namespace management code but may affect code +that walks the namespace tree looking for specific object +types. + +Code and Data Size: Current 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 the compiler options used during generation. + + Previous Release + Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total + Debug Version: 151.7K Code, 62.4K Data, 214.1K Total + Current Release: + Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total + Debug Version: 152.3K Code, 63.0K Data, 215.3K Total + + +2) Linux + +Fixed a problem introduced in the previous release where the +Processor and Thermal objects were not recognized and +installed in /proc. This was related to the scope type change +described above. + + +3) iASL Compiler/Disassembler + +Implemented the -g option to get all of the required ACPI +tables from the registry and save them to files (Windows +version of the compiler only.) The required tables are the +FADT, FACS, and DSDT. + +Added ACPI table checksum validation during table disassembly +in order to catch corrupted tables. + + +---------------------------------------- +22 October 2002. Summary of changes for version 20021022. + +1) ACPI CA Core Subsystem: + +Implemented a restriction on the Scope operator that the +target must already exist in the namespace at the time the +operator is encountered (during table load or method +execution). In other words, forward references are not +allowed and Scope() cannot create a new object. This changes +the previous behavior where the interpreter would create the +name if not found. This new behavior correctly enables the +search-to-root algorithm during namespace lookup of the target +name. Because of this upsearch, this fixes the known Compaq +_SB_.OKEC problem and makes both the AML interpreter and iASL +compiler compatible with other ACPI implementations. + +Completed a major overhaul of the internal ACPI object types +for the ACPI Namespace and the associated operand objects. +Many of these types had become obsolete with the introduction +of the two-pass namespace load. This cleanup simplifies the +code and makes the entire namespace load mechanism much +clearer and easier to understand. + +Improved debug output for tracking scope opening/closing to +help diagnose scoping issues. The old scope name as well as +the new scope name are displayed. Also improved error +messages for problems with ASL Mutex objects and error +messages for GPE problems. + +Cleaned up the namespace dump code, removed obsolete code. + +All string output (for all namespace/object dumps) now uses +the common ACPI string output procedure which handles escapes +properly and does not emit non-printable characters. + +Fixed some issues with constants in the 64-bit version of the +local C library (utclib.c) + + +2) Linux + +EC Driver: No longer attempts to acquire the Global Lock at +interrupt level. + + +3) iASL Compiler/Disassembler + +Implemented ACPI 2.0B grammar change that disallows all Type 1 +and 2 opcodes outside of a control method. This means that +the "executable" operators (versus the "namespace" operators) +cannot be used at the table level; they can only be used +within a control method. + +Implemented the restriction on the Scope() operator where the +target must already exist in the namespace at the time the +operator is encountered (during ASL compilation). In other +words, forward references are not allowed and Scope() cannot +create a new object. This makes the iASL compiler compatible +with other ACPI implementations and makes the Scope() +implementation adhere to the ACPI specification. + +Fixed a problem where namepath optimization for the Alias +operator was optimizing the wrong path (of the two namepaths.) +This caused a "Missing alias link" error message. + +Fixed a problem where an "unknown reserved name" warning could +be incorrectly generated for names like "_SB" when the +trailing underscore is not used in the original ASL. + +Fixed a problem where the reserved name check did not handle +NamePaths with multiple NameSegs correctly. The first nameseg +of the NamePath was examined instead of the last NameSeg. + + +---------------------------------------- 02 October 2002. Summary of changes for this release. |
