1---------------------------------------- 224 April 2014. Summary of changes for version 20140424: 3 41) ACPICA kernel-resident subsystem: 5 6Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 7Some of these tables are known to contain a trailing NULL entry. Lv 8Zheng. 9 10Removed an extraneous error message for the case where there are a large 11number of system GPEs (> 124). This was the "32-bit FADT register is too 12long to convert to GAS struct" message, which is irrelevant for GPEs 13since the GPEx_BLK_LEN fields of the FADT are always used instead of the 14(limited capacity) GAS bit length. Also, several changes to ensure proper 15support for GPE numbers > 255, where some "GPE number" fields were 8-bits 16internally. 17 18Implemented and deployed additional configuration support for the public 19ACPICA external interfaces. Entire classes of interfaces can now be 20easily modified or configured out, replaced by stubbed inline functions 21by default. Lv Zheng. 22 23Moved all public ACPICA runtime configuration globals to the public 24ACPICA external interface file for convenience. Also, removed some 25obsolete/unused globals. See the file acpixf.h. Lv Zheng. 26 27Documentation: Added a new section to the ACPICA reference describing the 28maximum number of GPEs that can be supported by the FADT-defined GPEs in 29block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 30reference. 31 32Example Code and Data Size: These are the sizes for the OS-independent 33acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 34debug version of the code includes the debug output trace mechanism and 35has a much larger code and data size. 36 37 Current Release: 38 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 39 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 40 Previous Release: 41 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 42 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 43 44 452) iASL Compiler/Disassembler and Tools: 46 47iASL and disassembler: Add full support for the LPIT table (Low Power 48Idle Table). Includes support in the disassembler, data table compiler, 49and template generator. 50 51AcpiDump utility: 521) Add option to force the use of the RSDT (over the XSDT). 532) Improve validation of the RSDP signature (use 8 chars instead of 4). 54 55iASL: Add check for predefined packages that are too large. For 56predefined names that contain subpackages, check if each subpackage is 57too large. (Check for too small already exists.) 58 59Debugger: Updated the GPE command (which simulates a GPE by executing the 60GPE code paths in ACPICA). The GPE device is now optional, and defaults 61to the GPE 0/1 FADT-defined blocks. 62 63Unix application OSL: Update line-editing support. Add additional error 64checking and take care not to reset terminal attributes on exit if they 65were never set. This should help guarantee that the terminal is always 66left in the previous state on program exit. 67 68---------------------------------------- 6925 March 2014. Summary of changes for version 20140325: 70 711) ACPICA kernel-resident subsystem: 72 73Updated the auto-serialize feature for control methods. This feature 74automatically serializes all methods that create named objects in order 75to prevent runtime errors. The update adds support to ignore the 76currently executing AML SyncLevel when invoking such a method, in order 77to prevent disruption of any existing SyncLevel priorities that may exist 78in the AML code. Although the use of SyncLevels is relatively rare, this 79change fixes a regression where an AE_AML_MUTEX_ORDER exception can 80appear on some machines starting with the 20140214 release. 81 82Added a new external interface to allow the host to install ACPI tables 83very early, before the namespace is even created. AcpiInstallTable gives 84the host additional flexibility for ACPI table management. Tables can be 85installed directly by the host as if they had originally appeared in the 86XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 87(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 88with additional internal restructuring and cleanup. See the ACPICA 89Reference for interface details. Lv Zheng. 90 91Added validation of the checksum for all incoming dynamically loaded 92tables (via external interfaces or via AML Load/LoadTable operators). Lv 93Zheng. 94 95Updated the use of the AcpiOsWaitEventsComplete interface during Notify 96and GPE handler removal. Restructured calls to eliminate possible race 97conditions. Lv Zheng. 98 99Added a warning for the use/execution of the ASL/AML Unload (table) 100operator. This will help detect and identify machines that use this 101operator if and when it is ever used. This operator has never been seen 102in the field and the usage model and possible side-effects of the drastic 103runtime action of a full table removal are unknown. 104 105Reverted the use of #pragma push/pop which was introduced in the 20140214 106release. It appears that push and pop are not implemented by enough 107compilers to make the use of this feature feasible for ACPICA at this 108time. However, these operators may be deployed in a future ACPICA 109release. 110 111Added the missing EXPORT_SYMBOL macros for the install and remove SCI 112handler interfaces. 113 114Source code generation: 1151) Disabled the use of the "strchr" macro for the gcc-specific 116generation. For some versions of gcc, this macro can periodically expose 117a compiler bug which in turn causes compile-time error(s). 1182) Added support for PPC64 compilation. Colin Ian King. 119 120Example Code and Data Size: These are the sizes for the OS-independent 121acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 122debug version of the code includes the debug output trace mechanism and 123has a much larger code and data size. 124 125 Current Release: 126 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 127 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 128 Previous Release: 129 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 130 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 131 132 1332) iASL Compiler/Disassembler and Tools: 134 135Disassembler: Added several new features to improve the readability of 136the resulting ASL code. Extra information is emitted within comment 137fields in the ASL code: 1381) Known _HID/_CID values are decoded to descriptive text. 1392) Standard values for the Notify() operator are decoded to descriptive 140text. 1413) Target operands are expanded to full pathnames (in a comment) when 142possible. 143 144Disassembler: Miscellaneous updates for extern() handling: 1451) Abort compiler if file specified by -fe option does not exist. 1462) Silence unnecessary warnings about argument count mismatches. 1473) Update warning messages concerning unresolved method externals. 1484) Emit "UnknownObj" keyword for externals whose type cannot be 149determined. 150 151AcpiHelp utility: 1521) Added the -a option to display both the ASL syntax and the AML 153encoding for an input ASL operator. This effectively displays all known 154information about an ASL operator with one AcpiHelp invocation. 1552) Added substring match support (similar to a wildcard) for the -i 156(_HID/PNP IDs) option. 157 158iASL/Disassembler: Since this tool does not yet support execution on big- 159endian machines, added detection of endianness and an error message if 160execution is attempted on big-endian. Support for big-endian within iASL 161is a feature that is on the ACPICA to-be-done list. 162 163AcpiBin utility: 1641) Remove option to extract binary files from an acpidump; this function 165is made obsolete by the AcpiXtract utility. 1662) General cleanup of open files and allocated buffers. 167 168---------------------------------------- 16914 February 2014. Summary of changes for version 20140214: 170 1711) ACPICA kernel-resident subsystem: 172 173Implemented a new mechanism to proactively prevent problems with ill- 174behaved reentrant control methods that create named ACPI objects. This 175behavior is illegal as per the ACPI specification, but is nonetheless 176frequently seen in the field. Previously, this could lead to an 177AE_ALREADY_EXISTS exception if the method was actually entered by more 178than one thread. This new mechanism detects such methods at table load 179time and marks them "serialized" to prevent reentrancy. A new global 180option, AcpiGbl_AutoSerializeMethods, has been added to disable this 181feature if desired. This mechanism and global option obsoletes and 182supersedes the previous AcpiGbl_SerializeAllMethods option. 183 184Added the "Windows 2013" string to the _OSI support. ACPICA will now 185respond TRUE to _OSI queries with this string. It is the stated policy of 186ACPICA to add new strings to the _OSI support as soon as possible after 187they are defined. See the full ACPICA _OSI policy which has been added to 188the utilities/utosi.c file. 189 190Hardened/updated the _PRT return value auto-repair code: 1911) Do not abort the repair on a single subpackage failure, continue to 192check all subpackages. 1932) Add check for the minimum subpackage length (4). 1943) Properly handle extraneous NULL package elements. 195 196Added support to avoid the possibility of infinite loops when traversing 197object linked lists. Never allow an infinite loop, even in the face of 198corrupted object lists. 199 200ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 201pack(pop) directives to ensure that the ACPICA headers are independent of 202compiler settings or other host headers. 203 204Example Code and Data Size: These are the sizes for the OS-independent 205acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 206debug version of the code includes the debug output trace mechanism and 207has a much larger code and data size. 208 209 Current Release: 210 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 211 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 212 Previous Release: 213 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 214 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 215 216 2172) iASL Compiler/Disassembler and Tools: 218 219iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 220first reserved field was incorrectly forced to have a value of zero. This 221change correctly forces the field to have a value of one. ACPICA BZ 1081. 222 223Debugger: Added missing support for the "Extra" and "Data" subobjects 224when displaying object data. 225 226Debugger: Added support to display entire object linked lists when 227displaying object data. 228 229iASL: Removed the obsolete -g option to obtain ACPI tables from the 230Windows registry. This feature has been superseded by the acpidump 231utility. 232 233---------------------------------------- 23414 January 2014. Summary of changes for version 20140114: 235 2361) ACPICA kernel-resident subsystem: 237 238Updated all ACPICA copyrights and signons to 2014. Added the 2014 239copyright to all module headers and signons, including the standard Linux 240header. This affects virtually every file in the ACPICA core subsystem, 241iASL compiler, all ACPICA utilities, and the test suites. 242 243Improved parameter validation for AcpiInstallGpeBlock. Added the 244following checks: 2451) The incoming device handle refers to type ACPI_TYPE_DEVICE. 2462) There is not already a GPE block attached to the device. 247Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 248device. 249 250Correctly support "references" in the ACPI_OBJECT. This change fixes the 251support to allow references (namespace nodes) to be passed as arguments 252to control methods via the evaluate object interface. This is probably 253most useful for testing purposes, however. 254 255Improved support for 32/64 bit physical addresses in printf()-like 256output. This change improves the support for physical addresses in printf 257debug statements and other output on both 32-bit and 64-bit hosts. It 258consistently outputs the appropriate number of bytes for each host. The 259%p specifier is unsatisfactory since it does not emit uniform output on 260all hosts/clib implementations (on some, leading zeros are not supported, 261leading to difficult-to-read output). 262 263Example Code and Data Size: These are the sizes for the OS-independent 264acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 265debug version of the code includes the debug output trace mechanism and 266has a much larger code and data size. 267 268 Current Release: 269 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 270 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 271 Previous Release: 272 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 273 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 274 275 2762) iASL Compiler/Disassembler and Tools: 277 278iASL: Fix a possible fault when using the Connection() operator. Fixes a 279problem if the parent Field definition for the Connection operator refers 280to an operation region that does not exist. ACPICA BZ 1064. 281 282AcpiExec: Load of local test tables is now optional. The utility has the 283capability to load some various tables to test features of ACPICA. 284However, there are enough of them that the output of the utility became 285confusing. With this change, only the required local tables are displayed 286(RSDP, XSDT, etc.) along with the actual tables loaded via the command 287line specification. This makes the default output simler and easier to 288understand. The -el command line option restores the original behavior 289for testing purposes. 290 291AcpiExec: Added support for overlapping operation regions. This change 292expands the simulation of operation regions by supporting regions that 293overlap within the given address space. Supports SystemMemory and 294SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 295 296AcpiExec: Added region handler support for PCI_Config and EC spaces. This 297allows AcpiExec to simulate these address spaces, similar to the current 298support for SystemMemory and SystemIO. 299 300Debugger: Added new command to read/write/compare all namespace objects. 301The command "test objects" will exercise the entire namespace by writing 302new values to each data object, and ensuring that the write was 303successful. The original value is then restored and verified. 304 305Debugger: Added the "test predefined" command. This change makes this 306test public and puts it under the new "test" command. The test executes 307each and every predefined name within the current namespace. 308 309---------------------------------------- 31018 December 2013. Summary of changes for version 20131218: 311 312Global note: The ACPI 5.0A specification was released this month. There 313are no changes needed for ACPICA since this release of ACPI is an 314errata/clarification release. The specification is available at 315acpi.info. 316 317 3181) ACPICA kernel-resident subsystem: 319 320Added validation of the XSDT root table if it is present. Some older 321platforms contain an XSDT that is ill-formed or otherwise invalid (such 322as containing some or all entries that are NULL pointers). This change 323adds a new function to validate the XSDT before actually using it. If the 324XSDT is found to be invalid, ACPICA will now automatically fall back to 325using the RSDT instead. Original implementation by Zhao Yakui. Ported to 326ACPICA and enhanced by Lv Zheng and Bob Moore. 327 328Added a runtime option to ignore the XSDT and force the use of the RSDT. 329This change adds a runtime option that will force ACPICA to use the RSDT 330instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 331requires that an XSDT be used instead of the RSDT, the XSDT has been 332found to be corrupt or ill-formed on some machines. Lv Zheng. 333 334Added a runtime option to favor 32-bit FADT register addresses over the 33564-bit addresses. This change adds an option to favor 32-bit FADT 336addresses when there is a conflict between the 32-bit and 64-bit versions 337of the same register. The default behavior is to use the 64-bit version 338in accordance with the ACPI specification. This can now be overridden via 339the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 340 341During the change above, the internal "Convert FADT" and "Verify FADT" 342functions have been merged to simplify the code, making it easier to 343understand and maintain. ACPICA BZ 933. 344 345Improve exception reporting and handling for GPE block installation. 346Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 347status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 348 349Added helper macros to extract bus/segment numbers from the HEST table. 350This change adds two macros to extract the encoded bus and segment 351numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 352Betty Dall <betty.dall@hp.com> 353 354Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 355by ACPICA. It is not a public macro, so it should have no effect on 356existing OSV code. Lv Zheng. 357 358Example Code and Data Size: These are the sizes for the OS-independent 359acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 360debug version of the code includes the debug output trace mechanism and 361has a much larger code and data size. 362 363 Current Release: 364 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 365 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 366 Previous Release: 367 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 368 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 369 370 3712) iASL Compiler/Disassembler and Tools: 372 373Disassembler: Improved pathname support for emitted External() 374statements. This change adds full pathname support for external names 375that have been resolved internally by the inclusion of additional ACPI 376tables (via the iASL -e option). Without this change, the disassembler 377can emit multiple externals for the same object, or it become confused 378when the Scope() operator is used on an external object. Overall, greatly 379improves the ability to actually recompile the emitted ASL code when 380objects a referenced across multiple ACPI tables. Reported by Michael 381Tsirkin (mst@redhat.com). 382 383Tests/ASLTS: Updated functional control suite to execute with no errors. 384David Box. Fixed several errors related to the testing of the interpreter 385slack mode. Lv Zheng. 386 387iASL: Added support to detect names that are declared within a control 388method, but are unused (these are temporary names that are only valid 389during the time the method is executing). A remark is issued for these 390cases. ACPICA BZ 1022. 391 392iASL: Added full support for the DBG2 table. Adds full disassembler, 393table compiler, and template generator support for the DBG2 table (Debug 394Port 2 table). 395 396iASL: Added full support for the PCCT table, update the table definition. 397Updates the PCCT table definition in the actbl3.h header and adds table 398compiler and template generator support. 399 400iASL: Added an option to emit only error messages (no warnings/remarks). 401The -ve option will enable only error messages, warnings and remarks are 402suppressed. This can simplify debugging when only the errors are 403important, such as when an ACPI table is disassembled and there are many 404warnings and remarks -- but only the actual errors are of real interest. 405 406Example ACPICA code (source/tools/examples): Updated the example code so 407that it builds to an actual working program, not just example code. Added 408ACPI tables and execution of an example control method in the DSDT. Added 409makefile support for Unix generation. 410 411---------------------------------------- 41215 November 2013. Summary of changes for version 20131115: 413 414This release is available at https://acpica.org/downloads 415 416 4171) ACPICA kernel-resident subsystem: 418 419Resource Manager: Fixed loop termination for the "get AML length" 420function. The loop previously had an error termination on a NULL resource 421pointer, which can never happen since the loop simply increments a valid 422resource pointer. This fix changes the loop to terminate with an error on 423an invalid end-of-buffer condition. The problem can be seen as an 424infinite loop by callers to AcpiSetCurrentResources with an invalid or 425corrupted resource descriptor, or a resource descriptor that is missing 426an END_TAG descriptor. Reported by Dan Carpenter 427<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 428 429Table unload and ACPICA termination: Delete all attached data objects 430during namespace node deletion. This fix updates namespace node deletion 431to delete the entire list of attached objects (attached via 432AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 4331024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 434 435ACPICA termination: Added support to delete all objects attached to the 436root namespace node. This fix deletes any and all objects that have been 437attached to the root node via AcpiAttachData. Previously, none of these 438objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 439 440Debug output: Do not emit the function nesting level for the in-kernel 441build. The nesting level is really only useful during a single-thread 442execution. Therefore, only enable this output for the AcpiExec utility. 443Also, only emit the thread ID when executing under AcpiExec (Context 444switches are still always detected and a message is emitted). ACPICA BZ 445972. 446 447Example Code and Data Size: These are the sizes for the OS-independent 448acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 449debug version of the code includes the debug output trace mechanism and 450has a much larger code and data size. 451 452 Current Release: 453 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 454 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 455 Previous Release: 456 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 457 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 458 459 4602) iASL Compiler/Disassembler and Tools: 461 462AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 463correct portable POSIX header for terminal control functions. 464 465Disassembler: Fixed control method invocation issues related to the use 466of the CondRefOf() operator. The problem is seen in the disassembly where 467control method invocations may not be disassembled properly if the 468control method name has been used previously as an argument to CondRefOf. 469The solution is to not attempt to emit an external declaration for the 470CondRefOf target (it is not necessary in the first place). This prevents 471disassembler object type confusion. ACPICA BZ 988. 472 473Unix Makefiles: Added an option to disable compiler optimizations and the 474_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 475with optimizations (reportedly, gcc 4.4 for example). This change adds a 476command line option for make (NOOPT) that disables all compiler 477optimizations and the _FORTIFY_SOURCE compiler flag. The default 478optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 4791034. Lv Zheng, Bob Moore. 480 481Tests/ASLTS: Added options to specify individual test cases and modes. 482This allows testers running aslts.sh to optionally specify individual 483test modes and test cases. Also added an option to disable the forced 484generation of the ACPICA tools from source if desired. Lv Zheng. 485 486---------------------------------------- 48727 September 2013. Summary of changes for version 20130927: 488 489This release is available at https://acpica.org/downloads 490 491 4921) ACPICA kernel-resident subsystem: 493 494Fixed a problem with store operations to reference objects. This change 495fixes a problem where a Store operation to an ArgX object that contained 496a 497reference to a field object did not complete the automatic dereference 498and 499then write to the actual field object. Instead, the object type of the 500field object was inadvertently changed to match the type of the source 501operand. The new behavior will actually write to the field object (buffer 502field or field unit), thus matching the correct ACPI-defined behavior. 503 504Implemented support to allow the host to redefine individual OSL 505prototypes. This change enables the host to redefine OSL prototypes found 506in the acpiosxf.h file. This allows the host to implement OSL interfaces 507with a macro or inlined function. Further, it allows the host to add any 508additional required modifiers such as __iomem, __init, __exit, etc., as 509necessary on a per-interface basis. Enables maximum flexibility for the 510OSL interfaces. Lv Zheng. 511 512Hardcoded the access width for the FADT-defined reset register. The ACPI 513specification requires the reset register width to be 8 bits. ACPICA now 514hardcodes the width to 8 and ignores the FADT width value. This provides 515compatibility with other ACPI implementations that have allowed BIOS code 516with bad register width values to go unnoticed. Matthew Garett, Bob 517Moore, 518Lv Zheng. 519 520Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 521used 522in the OSL header (acpiosxf). The change modifies the position of this 523macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 524build issues if the OSL defines the implementation of the interface to be 525an inline stub function. Lv Zheng. 526 527Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 528initialization interfaces. This change adds a new macro for the main init 529and terminate external interfaces in order to support hosts that require 530additional or different processing for these functions. Changed from 531ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 532Zheng, Bob Moore. 533 534Cleaned up the memory allocation macros for configurability. In the 535common 536case, the ACPI_ALLOCATE and related macros now resolve directly to their 537respective AcpiOs* OSL interfaces. Two options: 5381) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 539default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 5402) For AcpiExec (and for debugging), the macros can optionally be 541resolved 542to the local ACPICA interfaces that track each allocation (local tracking 543is used to immediately detect memory leaks). 544Lv Zheng. 545 546Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 547to predefine this macro to either TRUE or FALSE during the system build. 548 549Replaced __FUNCTION_ with __func__ in the gcc-specific header. 550 551Example Code and Data Size: These are the sizes for the OS-independent 552acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 553debug version of the code includes the debug output trace mechanism and 554has a much larger code and data size. 555 556 Current Release: 557 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 558 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 559 Previous Release: 560 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 561 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 562 563 5642) iASL Compiler/Disassembler and Tools: 565 566iASL: Implemented wildcard support for the -e option. This simplifies use 567when there are many SSDTs that must be included to resolve external 568method 569declarations. ACPICA BZ 1041. Example: 570 iasl -e ssdt*.dat -d dsdt.dat 571 572AcpiExec: Add history/line-editing for Unix/Linux systems. This change 573adds a portable module that implements full history and limited line 574editing for Unix and Linux systems. It does not use readline() due to 575portability issues. Instead it uses the POSIX termio interface to put the 576terminal in raw input mode so that the various special keys can be 577trapped 578(such as up/down-arrow for history support and left/right-arrow for line 579editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 580 581AcpiXtract: Add support to handle (ignore) "empty" lines containing only 582one or more spaces. This provides compatible with early or different 583versions of the AcpiDump utility. ACPICA BZ 1044. 584 585AcpiDump: Do not ignore tables that contain only an ACPI table header. 586Apparently, some BIOSs create SSDTs that contain an ACPI table header but 587no other data. This change adds support to dump these tables. Any tables 588shorter than the length of an ACPI table header remain in error (an error 589message is emitted). Reported by Yi Li. 590 591Debugger: Echo actual command along with the "unknown command" message. 592 593---------------------------------------- 59423 August 2013. Summary of changes for version 20130823: 595 5961) ACPICA kernel-resident subsystem: 597 598Implemented support for host-installed System Control Interrupt (SCI) 599handlers. Certain ACPI functionality requires the host to handle raw 600SCIs. For example, the "SCI Doorbell" that is defined for memory power 601state support requires the host device driver to handle SCIs to examine 602if the doorbell has been activated. Multiple SCI handlers can be 603installed to allow for future expansion. New external interfaces are 604AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 605details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 606 607Operation region support: Never locally free the handler "context" 608pointer. This change removes some dangerous code that attempts to free 609the handler context pointer in some (rare) circumstances. The owner of 610the handler owns this pointer and the ACPICA code should never touch it. 611Although not seen to be an issue in any kernel, it did show up as a 612problem (fault) under AcpiExec. Also, set the internal storage field for 613the context pointer to zero when the region is deactivated, simply for 614sanity. David Box. ACPICA BZ 1039. 615 616AcpiRead: On error, do not modify the return value target location. If an 617error happens in the middle of a split 32/32 64-bit I/O operation, do not 618modify the target of the return value pointer. Makes the code consistent 619with the rest of ACPICA. Bjorn Helgaas. 620 621Example Code and Data Size: These are the sizes for the OS-independent 622acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 623debug version of the code includes the debug output trace mechanism and 624has a much larger code and data size. 625 626 Current Release: 627 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 628 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 629 Previous Release: 630 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 631 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 632 633 6342) iASL Compiler/Disassembler and Tools: 635 636AcpiDump: Implemented several new features and fixed some problems: 6371) Added support to dump the RSDP, RSDT, and XSDT tables. 6382) Added support for multiple table instances (SSDT, UEFI). 6393) Added option to dump "customized" (overridden) tables (-c). 6404) Fixed a problem where some table filenames were improperly 641constructed. 6425) Improved some error messages, removed some unnecessary messages. 643 644iASL: Implemented additional support for disassembly of ACPI tables that 645contain invocations of external control methods. The -fe<file> option 646allows the import of a file that specifies the external methods along 647with the required number of arguments for each -- allowing for the 648correct disassembly of the table. This is a workaround for a limitation 649of AML code where the disassembler often cannot determine the number of 650arguments required for an external control method and generates incorrect 651ASL code. See the iASL reference for details. ACPICA BZ 1030. 652 653Debugger: Implemented a new command (paths) that displays the full 654pathnames (namepaths) and object types of all objects in the namespace. 655This is an alternative to the namespace command. 656 657Debugger: Implemented a new command (sci) that invokes the SCI dispatch 658mechanism and any installed handlers. 659 660iASL: Fixed a possible segfault for "too many parent prefixes" condition. 661This can occur if there are too many parent prefixes in a namepath (for 662example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 663 664Application OSLs: Set the return value for the PCI read functions. These 665functions simply return AE_OK, but should set the return value to zero 666also. This change implements this. ACPICA BZ 1038. 667 668Debugger: Prevent possible command line buffer overflow. Increase the 669size of a couple of the debugger line buffers, and ensure that overflow 670cannot happen. ACPICA BZ 1037. 671 672iASL: Changed to abort immediately on serious errors during the parsing 673phase. Due to the nature of ASL, there is no point in attempting to 674compile these types of errors, and they typically end up causing a 675cascade of hundreds of errors which obscure the original problem. 676 677---------------------------------------- 67825 July 2013. Summary of changes for version 20130725: 679 6801) ACPICA kernel-resident subsystem: 681 682Fixed a problem with the DerefOf operator where references to FieldUnits 683and BufferFields incorrectly returned the parent object, not the actual 684value of the object. After this change, a dereference of a FieldUnit 685reference results in a read operation on the field to get the value, and 686likewise, the appropriate BufferField value is extracted from the target 687buffer. 688 689Fixed a problem where the _WAK method could cause a fault under these 690circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 691method returned no value. The problem is rarely seen because most kernels 692run ACPICA in slack mode. 693 694For the DerefOf operator, a fatal error now results if an attempt is made 695to dereference a reference (created by the Index operator) to a NULL 696package element. Provides compatibility with other ACPI implementations, 697and this behavior will be added to a future version of the ACPI 698specification. 699 700The ACPI Power Management Timer (defined in the FADT) is now optional. 701This provides compatibility with other ACPI implementations and will 702appear in the next version of the ACPI specification. If there is no PM 703Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 704zero in the FADT indicates no PM timer. 705 706Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 707allows the host to globally enable/disable all vendor strings, all 708feature strings, or both. Intended to be primarily used for debugging 709purposes only. Lv Zheng. 710 711Expose the collected _OSI data to the host via a global variable. This 712data tracks the highest level vendor ID that has been invoked by the BIOS 713so that the host (and potentially ACPICA itself) can change behaviors 714based upon the age of the BIOS. 715 716Example Code and Data Size: These are the sizes for the OS-independent 717acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 718debug version of the code includes the debug output trace mechanism and 719has a much larger code and data size. 720 721 Current Release: 722 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 723 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 724 Previous Release: 725 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 726 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 727 728 7292) iASL Compiler/Disassembler and Tools: 730 731iASL: Created the following enhancements for the -so option (create 732offset table): 7331)Add offsets for the last nameseg in each namepath for every supported 734object type 7352)Add support for Processor, Device, Thermal Zone, and Scope objects 7363)Add the actual AML opcode for the parent object of every supported 737object type 7384)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 739 740Disassembler: Emit all unresolved external symbols in a single block. 741These are external references to control methods that could not be 742resolved, and thus, the disassembler had to make a guess at the number of 743arguments to parse. 744 745iASL: The argument to the -T option (create table template) is now 746optional. If not specified, the default table is a DSDT, typically the 747most common case. 748 749---------------------------------------- 75026 June 2013. Summary of changes for version 20130626: 751 7521) ACPICA kernel-resident subsystem: 753 754Fixed an issue with runtime repair of the _CST object. Null or invalid 755elements were not always removed properly. Lv Zheng. 756 757Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 758FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 759the maximum number of GPEs is 1016. Use of multiple GPE block devices 760makes the system-wide number of GPEs essentially unlimited. 761 762Example Code and Data Size: These are the sizes for the OS-independent 763acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 764debug version of the code includes the debug output trace mechanism and 765has a much larger code and data size. 766 767 Current Release: 768 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 769 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 770 Previous Release: 771 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 772 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 773 774 7752) iASL Compiler/Disassembler and Tools: 776 777Portable AcpiDump: Implemented full support for the Linux and FreeBSD 778hosts. Now supports Linux, FreeBSD, and Windows. 779 780Disassembler: Added some missing types for the HEST and EINJ tables: "Set 781Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 782 783iASL/Preprocessor: Implemented full support for nested 784#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 785 786Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 787max. The original purpose of this constraint was to limit the amount of 788debug output. However, the string function in question (UtPrintString) is 789now used for the disassembler also, where 256 bytes is insufficient. 790Reported by RehabMan@GitHub. 791 792iASL/DataTables: Fixed some problems and issues with compilation of DMAR 793tables. ACPICA BZ 999. Lv Zheng. 794 795iASL: Fixed a couple of error exit issues that could result in a "Could 796not delete <file>" message during ASL compilation. 797 798AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 799the actual signatures for these tables are "FACP" and "APIC", 800respectively. 801 802AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 803tables are allowed to have multiple instances. 804 805---------------------------------------- 80617 May 2013. Summary of changes for version 20130517: 807 8081) ACPICA kernel-resident subsystem: 809 810Fixed a regression introduced in version 20130328 for _INI methods. This 811change fixes a problem introduced in 20130328 where _INI methods are no 812longer executed properly because of a memory block that was not 813initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 814<tomasz.nowicki@linaro.org>. 815 816Fixed a possible problem with the new extended sleep registers in the 817ACPI 8185.0 FADT. Do not use these registers (even if populated) unless the HW- 819reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 8201020. Lv Zheng. 821 822Implemented return value repair code for _CST predefined objects: Sort 823the 824list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 825 826Implemented a debug-only option to disable loading of SSDTs from the 827RSDT/XSDT during ACPICA initialization. This can be useful for debugging 828ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 829acglobal.h - ACPICA BZ 1005. Lv Zheng. 830 831Fixed some issues in the ACPICA initialization and termination code: 832Tomasz Nowicki <tomasz.nowicki@linaro.org> 8331) Clear events initialized flag upon event component termination. ACPICA 834BZ 1013. 8352) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 8363) Delete global lock pending lock during termination. ACPICA BZ 1012. 8374) Clear debug buffer global on termination to prevent possible multiple 838delete. ACPICA BZ 1010. 839 840Standardized all switch() blocks across the entire source base. After 841many 842years, different formatting for switch() had crept in. This change makes 843the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 844 845Split some files to enhance ACPICA modularity and configurability: 8461) Split buffer dump routines into utilities/utbuffer.c 8472) Split internal error message routines into utilities/uterror.c 8483) Split table print utilities into tables/tbprint.c 8494) Split iASL command-line option processing into asloptions.c 850 851Makefile enhancements: 8521) Support for all new files above. 8532) Abort make on errors from any subcomponent. Chao Guan. 8543) Add build support for Apple Mac OS X. Liang Qi. 855 856Example Code and Data Size: These are the sizes for the OS-independent 857acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 858debug version of the code includes the debug output trace mechanism and 859has a much larger code and data size. 860 861 Current Release: 862 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 863 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 864 Previous Release: 865 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 866 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 867 868 8692) iASL Compiler/Disassembler and Tools: 870 871New utility: Implemented an easily portable version of the acpidump 872utility to extract ACPI tables from the system (or a file) in an ASCII 873hex 874dump format. The top-level code implements the various command line 875options, file I/O, and table dump routines. To port to a new host, only 876three functions need to be implemented to get tables -- since this 877functionality is OS-dependent. See the tools/acpidump/apmain.c module and 878the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 8791) The Windows version obtains the ACPI tables from the Registry. 8802) The Linux version is under development. 8813) Other hosts - If an OS-dependent module is submitted, it will be 882distributed with ACPICA. 883 884iASL: Fixed a regression for -D preprocessor option (define symbol). A 885restructuring/change to the initialization sequence caused this option to 886no longer work properly. 887 888iASL: Implemented a mechanism to disable specific warnings and remarks. 889Adds a new command line option, "-vw <messageid> as well as "#pragma 890disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 891 892iASL: Fix for too-strict package object validation. The package object 893validation for return values from the predefined names is a bit too 894strict, it does not allow names references within the package (which will 895be resolved at runtime.) These types of references cannot be validated at 896compile time. This change ignores named references within package objects 897for names that return or define static packages. 898 899Debugger: Fixed the 80-character command line limitation for the History 900command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 901 902iASL: Added control method and package support for the -so option 903(generates AML offset table for BIOS support.) 904 905iASL: issue a remark if a non-serialized method creates named objects. If 906a thread blocks within the method for any reason, and another thread 907enters the method, the method will fail because an attempt will be made 908to 909create the same (named) object twice. In this case, issue a remark that 910the method should be marked serialized. NOTE: may become a warning later. 911ACPICA BZ 909. 912 913---------------------------------------- 91418 April 2013. Summary of changes for version 20130418: 915 9161) ACPICA kernel-resident subsystem: 917 918Fixed a possible buffer overrun during some rare but specific field unit 919read operations. This overrun can only happen if the DSDT version is 1 -- 920meaning that all AML integers are 32 bits -- and the field length is 921between 33 and 55 bits long. During the read, an internal buffer object 922is 923created for the field unit because the field is larger than an integer 924(32 925bits). However, in this case, the buffer will be incorrectly written 926beyond the end because the buffer length is less than the internal 927minimum 928of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 929long, but a full 8 bytes will be written. 930 931Updated the Embedded Controller "orphan" _REG method support. This refers 932to _REG methods under the EC device that have no corresponding operation 933region. This is allowed by the ACPI specification. This update removes a 934dependency on the existence an ECDT table. It will execute an orphan _REG 935method as long as the operation region handler for the EC is installed at 936the EC device node and not the namespace root. Rui Zhang (original 937update), Bob Moore (update/integrate). 938 939Implemented run-time argument typechecking for all predefined ACPI names 940(_STA, _BIF, etc.) This change performs object typechecking on all 941incoming arguments for all predefined names executed via 942AcpiEvaluateObject. This ensures that ACPI-related device drivers are 943passing correct object types as well as the correct number of arguments 944(therefore identifying any issues immediately). Also, the ASL/namespace 945definition of the predefined name is checked against the ACPI 946specification for the proper argument count. Adds one new file, 947nsarguments.c 948 949Changed an exception code for the ASL UnLoad() operator. Changed the 950exception code for the case where the input DdbHandle is invalid, from 951AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 952 953Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 954global makefile. The use of this flag causes compiler errors on earlier 955versions of GCC, so it has been removed for compatibility. 956 957Miscellaneous cleanup: 9581) Removed some unused/obsolete macros 9592) Fixed a possible memory leak in the _OSI support 9603) Removed an unused variable in the predefined name support 9614) Windows OSL: remove obsolete reference to a memory list field 962 963Example Code and Data Size: These are the sizes for the OS-independent 964acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 965debug version of the code includes the debug output trace mechanism and 966has a much larger code and data size. 967 968 Current Release: 969 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 970 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 971 Previous Release: 972 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 973 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 974 975 9762) iASL Compiler/Disassembler and Tools: 977 978AcpiExec: Added installation of a handler for the SystemCMOS address 979space. This prevents control method abort if a method accesses this 980space. 981 982AcpiExec: Added support for multiple EC devices, and now install EC 983operation region handler(s) at the actual EC device instead of the 984namespace root. This reflects the typical behavior of host operating 985systems. 986 987AcpiExec: Updated to ensure that all operation region handlers are 988installed before the _REG methods are executed. This prevents a _REG 989method from aborting if it accesses an address space has no handler. 990AcpiExec installs a handler for every possible address space. 991 992Debugger: Enhanced the "handlers" command to display non-root handlers. 993This change enhances the handlers command to display handlers associated 994with individual devices throughout the namespace, in addition to the 995currently supported display of handlers associated with the root 996namespace 997node. 998 999ASL Test Suite: Several test suite errors have been identified and 1000resolved, reducing the total error count during execution. Chao Guan. 1001 1002---------------------------------------- 100328 March 2013. Summary of changes for version 20130328: 1004 10051) ACPICA kernel-resident subsystem: 1006 1007Fixed several possible race conditions with the internal object reference 1008counting mechanism. Some of the external ACPICA interfaces update object 1009reference counts without holding the interpreter or namespace lock. This 1010change adds a spinlock to protect reference count updates on the internal 1011ACPICA objects. Reported by and with assistance from Andriy Gapon 1012(avg@FreeBSD.org). 1013 1014FADT support: Removed an extraneous warning for very large GPE register 1015sets. This change removes a size mismatch warning if the legacy length 1016field for a GPE register set is larger than the 64-bit GAS structure can 1017accommodate. GPE register sets can be larger than the 255-bit width 1018limitation of the GAS structure. Linn Crosetto (linn@hp.com). 1019 1020_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 1021return from this interface. Handles a possible timeout case if 1022ACPI_WAIT_FOREVER is modified by the host to be a value less than 1023"forever". Jung-uk Kim. 1024 1025Predefined name support: Add allowed/required argument type information 1026to 1027the master predefined info table. This change adds the infrastructure to 1028enable typechecking on incoming arguments for all predefined 1029methods/objects. It does not actually contain the code that will fully 1030utilize this information, this is still under development. Also condenses 1031some duplicate code for the predefined names into a new module, 1032utilities/utpredef.c 1033 1034Example Code and Data Size: These are the sizes for the OS-independent 1035acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1036debug version of the code includes the debug output trace mechanism and 1037has a much larger code and data size. 1038 1039 Previous Release: 1040 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1041 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1042 Current Release: 1043 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 1044 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 1045 1046 10472) iASL Compiler/Disassembler and Tools: 1048 1049iASL: Implemented a new option to simplify the development of ACPI- 1050related 1051BIOS code. Adds support for a new "offset table" output file. The -so 1052option will create a C table containing the AML table offsets of various 1053named objects in the namespace so that BIOS code can modify them easily 1054at 1055boot time. This can simplify BIOS runtime code by eliminating expensive 1056searches for "magic values", enhancing boot times and adding greater 1057reliability. With assistance from Lee Hamel. 1058 1059iASL: Allow additional predefined names to return zero-length packages. 1060Now, all predefined names that are defined by the ACPI specification to 1061return a "variable-length package of packages" are allowed to return a 1062zero length top-level package. This allows the BIOS to tell the host that 1063the requested feature is not supported, and supports existing BIOS/ASL 1064code and practices. 1065 1066iASL: Changed the "result not used" warning to an error. This is the case 1067where an ASL operator is effectively a NOOP because the result of the 1068operation is not stored anywhere. For example: 1069 Add (4, Local0) 1070There is no target (missing 3rd argument), nor is the function return 1071value used. This is potentially a very serious problem -- since the code 1072was probably intended to do something, but for whatever reason, the value 1073was not stored. Therefore, this issue has been upgraded from a warning to 1074an error. 1075 1076AcpiHelp: Added allowable/required argument types to the predefined names 1077info display. This feature utilizes the recent update to the predefined 1078names table (above). 1079 1080---------------------------------------- 108114 February 2013. Summary of changes for version 20130214: 1082 10831) ACPICA Kernel-resident Subsystem: 1084 1085Fixed a possible regression on some hosts: Reinstated the safe return 1086macros (return_ACPI_STATUS, etc.) that ensure that the argument is 1087evaluated only once. Although these macros are not needed for the ACPICA 1088code itself, they are often used by ACPI-related host device drivers 1089where 1090the safe feature may be necessary. 1091 1092Fixed several issues related to the ACPI 5.0 reduced hardware support 1093(SOC): Now ensure that if the platform declares itself as hardware- 1094reduced 1095via the FADT, the following functions become NOOPs (and always return 1096AE_OK) because ACPI is always enabled by definition on these machines: 1097 AcpiEnable 1098 AcpiDisable 1099 AcpiHwGetMode 1100 AcpiHwSetMode 1101 1102Dynamic Object Repair: Implemented additional runtime repairs for 1103predefined name return values. Both of these repairs can simplify code in 1104the related device drivers that invoke these methods: 11051) For the _STR and _MLS names, automatically repair/convert an ASCII 1106string to a Unicode buffer. 11072) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 1108a 1109lone end tag descriptor in the following cases: A Return(0) was executed, 1110a null buffer was returned, or no object at all was returned (non-slack 1111mode only). Adds a new file, nsconvert.c 1112ACPICA BZ 998. Bob Moore, Lv Zheng. 1113 1114Resource Manager: Added additional code to prevent possible infinite 1115loops 1116while traversing corrupted or ill-formed resource template buffers. Check 1117for zero-length resource descriptors in all code that loops through 1118resource templates (the length field is used to index through the 1119template). This change also hardens the external AcpiWalkResources and 1120AcpiWalkResourceBuffer interfaces. 1121 1122Local Cache Manager: Enhanced the main data structure to eliminate an 1123unnecessary mechanism to access the next object in the list. Actually 1124provides a small performance enhancement for hosts that use the local 1125ACPICA cache manager. Jung-uk Kim. 1126 1127Example Code and Data Size: These are the sizes for the OS-independent 1128acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1129debug version of the code includes the debug output trace mechanism and 1130has a much larger code and data size. 1131 1132 Previous Release: 1133 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1134 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1135 Current Release: 1136 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 1137 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 1138 1139 11402) iASL Compiler/Disassembler and Tools: 1141 1142iASL/Disassembler: Fixed several issues with the definition of the ACPI 11435.0 RASF table (RAS Feature Table). This change incorporates late changes 1144that were made to the ACPI 5.0 specification. 1145 1146iASL/Disassembler: Added full support for the following new ACPI tables: 1147 1) The MTMR table (MID Timer Table) 1148 2) The VRTC table (Virtual Real Time Clock Table). 1149Includes header file, disassembler, table compiler, and template support 1150for both tables. 1151 1152iASL: Implemented compile-time validation of package objects returned by 1153predefined names. This new feature validates static package objects 1154returned by the various predefined names defined to return packages. Both 1155object types and package lengths are validated, for both parent packages 1156and sub-packages, if any. The code is similar in structure and behavior 1157to 1158the runtime repair mechanism within the AML interpreter and uses the 1159existing predefined name information table. Adds a new file, aslprepkg.c. 1160ACPICA BZ 938. 1161 1162iASL: Implemented auto-detection of binary ACPI tables for disassembly. 1163This feature detects a binary file with a valid ACPI table header and 1164invokes the disassembler automatically. Eliminates the need to 1165specifically invoke the disassembler with the -d option. ACPICA BZ 862. 1166 1167iASL/Disassembler: Added several warnings for the case where there are 1168unresolved control methods during the disassembly. This can potentially 1169cause errors when the output file is compiled, because the disassembler 1170assumes zero method arguments in these cases (it cannot determine the 1171actual number of arguments without resolution/definition of the method). 1172 1173Debugger: Added support to display all resources with a single command. 1174Invocation of the resources command with no arguments will now display 1175all 1176resources within the current namespace. 1177 1178AcpiHelp: Added descriptive text for each ACPICA exception code displayed 1179via the -e option. 1180 1181---------------------------------------- 118217 January 2013. Summary of changes for version 20130117: 1183 11841) ACPICA Kernel-resident Subsystem: 1185 1186Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 1187return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 1188objects to return a package containing one integer, most BIOS code 1189returns 1190two integers and the previous code reflects that. However, we also need 1191to 1192support BIOS code that actually implements to the ACPI spec, and this 1193change reflects this. 1194 1195Fixed two issues with the ACPI_DEBUG_PRINT macros: 11961) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 1197C compilers that require this support. 11982) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 1199ACPI_DEBUG is already used by many of the various hosts. 1200 1201Updated all ACPICA copyrights and signons to 2013. Added the 2013 1202copyright to all module headers and signons, including the standard Linux 1203header. This affects virtually every file in the ACPICA core subsystem, 1204iASL compiler, all ACPICA utilities, and the test suites. 1205 1206Example Code and Data Size: These are the sizes for the OS-independent 1207acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1208debug version of the code includes the debug output trace mechanism and 1209has a much larger code and data size. 1210 1211 Previous Release: 1212 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 1213 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 1214 Current Release: 1215 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 1216 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 1217 1218 12192) iASL Compiler/Disassembler and Tools: 1220 1221Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 1222prevent a possible fault on some hosts. Some C libraries modify the arg 1223pointer parameter to vfprintf making it difficult to call it twice in the 1224AcpiOsVprintf function. Use a local buffer to workaround this issue. This 1225does not affect the Windows OSL since the Win C library does not modify 1226the arg pointer. Chao Guan, Bob Moore. 1227 1228iASL: Fixed a possible infinite loop when the maximum error count is 1229reached. If an output file other than the .AML file is specified (such as 1230a listing file), and the maximum number of errors is reached, do not 1231attempt to flush data to the output file(s) as the compiler is aborting. 1232This can cause an infinite loop as the max error count code essentially 1233keeps calling itself. 1234 1235iASL/Disassembler: Added an option (-in) to ignore NOOP 1236opcodes/operators. 1237Implemented for both the compiler and the disassembler. Often, the NOOP 1238opcode is used as padding for packages that are changed dynamically by 1239the 1240BIOS. When disassembled and recompiled, these NOOPs will cause syntax 1241errors. This option causes the disassembler to ignore all NOOP opcodes 1242(0xA3), and it also causes the compiler to ignore all ASL source code 1243NOOP 1244statements as well. 1245 1246Debugger: Enhanced the Sleep command to execute all sleep states. This 1247change allows Sleep to be invoked with no arguments and causes the 1248debugger to execute all of the sleep states, 0-5, automatically. 1249 1250---------------------------------------- 125120 December 2012. Summary of changes for version 20121220: 1252 12531) ACPICA Kernel-resident Subsystem: 1254 1255Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 1256alternate entry point for AcpiWalkResources and improves the usability of 1257the resource manager by accepting as input a buffer containing the output 1258of either a _CRS, _PRS, or _AEI method. The key functionality is that the 1259input buffer is not deleted by this interface so that it can be used by 1260the host later. See the ACPICA reference for details. 1261 1262Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 1263(DSDT version < 2). The constant will be truncated and this warning 1264reflects that behavior. 1265 1266Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 1267ExtendedInterrupt, and GpioInt descriptors. This change adds support to 1268both get and set the new wake bit in these descriptors, separately from 1269the existing share bit. Reported by Aaron Lu. 1270 1271Interpreter: Fix Store() when an implicit conversion is not possible. For 1272example, in the cases such as a store of a string to an existing package 1273object, implement the store as a CopyObject(). This is a small departure 1274from the ACPI specification which states that the control method should 1275be 1276aborted in this case. However, the ASLTS suite depends on this behavior. 1277 1278Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 1279macros: check if debug output is currently enabled as soon as possible to 1280minimize performance impact if debug is in fact not enabled. 1281 1282Source code restructuring: Cleanup to improve modularity. The following 1283new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 1284psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 1285Associated makefiles and project files have been updated. 1286 1287Changed an exception code for LoadTable operator. For the case where one 1288of the input strings is too long, change the returned exception code from 1289AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 1290 1291Fixed a possible memory leak in dispatcher error path. On error, delete 1292the mutex object created during method mutex creation. Reported by 1293tim.gardner@canonical.com. 1294 1295Example Code and Data Size: These are the sizes for the OS-independent 1296acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1297debug version of the code includes the debug output trace mechanism and 1298has a much larger code and data size. 1299 1300 Previous Release: 1301 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 1302 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1303 Current Release: 1304 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 1305 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 1306 1307 13082) iASL Compiler/Disassembler and Tools: 1309 1310iASL: Disallow a method call as argument to the ObjectType ASL operator. 1311This change tracks an errata to the ACPI 5.0 document. The AML grammar 1312will not allow the interpreter to differentiate between a method and a 1313method invocation when these are used as an argument to the ObjectType 1314operator. The ACPI specification change is to disallow a method 1315invocation 1316(UserTerm) for the ObjectType operator. 1317 1318Finish support for the TPM2 and CSRT tables in the headers, table 1319compiler, and disassembler. 1320 1321Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 1322always expires immediately if the semaphore is not available. The 1323original 1324code was using a relative-time timeout, but sem_timedwait requires the 1325use 1326of an absolute time. 1327 1328iASL: Added a remark if the Timer() operator is used within a 32-bit 1329table. This operator returns a 64-bit time value that will be truncated 1330within a 32-bit table. 1331 1332iASL Source code restructuring: Cleanup to improve modularity. The 1333following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 1334aslmethod.c, and aslfileio.c. Associated makefiles and project files have 1335been updated. 1336 1337 1338---------------------------------------- 133914 November 2012. Summary of changes for version 20121114: 1340 13411) ACPICA Kernel-resident Subsystem: 1342 1343Implemented a performance enhancement for ACPI/AML Package objects. This 1344change greatly increases the performance of Package objects within the 1345interpreter. It changes the processing of reference counts for packages 1346by 1347optimizing for the most common case where the package sub-objects are 1348either Integers, Strings, or Buffers. Increases the overall performance 1349of 1350the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 13512X.) 1352Chao Guan. ACPICA BZ 943. 1353 1354Implemented and deployed common macros to extract flag bits from resource 1355descriptors. Improves readability and maintainability of the code. Fixes 1356a 1357problem with the UART serial bus descriptor for the number of data bits 1358flags (was incorrectly 2 bits, should be 3). 1359 1360Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 1361of the macros and changed the SETx macros to the style of (destination, 1362source). Also added ACPI_CASTx companion macros. Lv Zheng. 1363 1364Example Code and Data Size: These are the sizes for the OS-independent 1365acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1366debug version of the code includes the debug output trace mechanism and 1367has a much larger code and data size. 1368 1369 Previous Release: 1370 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 1371 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1372 Current Release: 1373 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 1374 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1375 1376 13772) iASL Compiler/Disassembler and Tools: 1378 1379Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 1380adds the ShareAndWake and ExclusiveAndWake flags which were added to the 1381Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 1382 1383Disassembler: Fixed a problem with external declaration generation. Fixes 1384a problem where an incorrect pathname could be generated for an external 1385declaration if the original reference to the object includes leading 1386carats (^). ACPICA BZ 984. 1387 1388Debugger: Completed a major update for the Disassemble<method> command. 1389This command was out-of-date and did not properly disassemble control 1390methods that had any reasonable complexity. This fix brings the command 1391up 1392to the same level as the rest of the disassembler. Adds one new file, 1393dmdeferred.c, which is existing code that is now common with the main 1394disassembler and the debugger disassemble command. ACPICA MZ 978. 1395 1396iASL: Moved the parser entry prototype to avoid a duplicate declaration. 1397Newer versions of Bison emit this prototype, so moved the prototype out 1398of 1399the iASL header to where it is actually used in order to avoid a 1400duplicate 1401declaration. 1402 1403iASL/Tools: Standardized use of the stream I/O functions: 1404 1) Ensure check for I/O error after every fopen/fread/fwrite 1405 2) Ensure proper order of size/count arguments for fread/fwrite 1406 3) Use test of (Actual != Requested) after all fwrite, and most fread 1407 4) Standardize I/O error messages 1408Improves reliability and maintainability of the code. Bob Moore, Lv 1409Zheng. 1410ACPICA BZ 981. 1411 1412Disassembler: Prevent duplicate External() statements. During generation 1413of external statements, detect similar pathnames that are actually 1414duplicates such as these: 1415 External (\ABCD) 1416 External (ABCD) 1417Remove all leading '\' characters from pathnames during the external 1418statement generation so that duplicates will be detected and tossed. 1419ACPICA BZ 985. 1420 1421Tools: Replace low-level I/O with stream I/O functions. Replace 1422open/read/write/close with the stream I/O equivalents 1423fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 1424Moore. 1425 1426AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 1427name header so that AcpiXtract recognizes the output file/table. 1428 1429iASL: Remove obsolete -2 option flag. Originally intended to force the 1430compiler/disassembler into an ACPI 2.0 mode, this was never implemented 1431and the entire concept is now obsolete. 1432 1433---------------------------------------- 143418 October 2012. Summary of changes for version 20121018: 1435 1436 14371) ACPICA Kernel-resident Subsystem: 1438 1439Updated support for the ACPI 5.0 MPST table. Fixes some problems 1440introduced by late changes to the table as it was added to the ACPI 5.0 1441specification. Includes header, disassembler, and data table compiler 1442support as well as a new version of the MPST template. 1443 1444AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 14455.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 1446methods: _HID, _CID, and _UID. 1447 1448Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 1449ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 1450name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 1451names for their various drivers. Affects the AcpiGetObjectInfo external 1452interface, and other internal interfaces as well. 1453 1454Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 1455This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 1456on machines that support non-aligned transfers. Optimizes for this case 1457rather than using a strncpy. With assistance from Zheng Lv. 1458 1459Resource Manager: Small fix for buffer size calculation. Fixed a one byte 1460error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 1461 1462Added a new debug print message for AML mutex objects that are force- 1463released. At control method termination, any currently acquired mutex 1464objects are force-released. Adds a new debug-only message for each one 1465that is released. 1466 1467Audited/updated all ACPICA return macros and the function debug depth 1468counter: 1) Ensure that all functions that use the various TRACE macros 1469also use the appropriate ACPICA return macros. 2) Ensure that all normal 1470return statements surround the return expression (value) with parens to 1471ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 1472Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 1473 1474Global source code changes/maintenance: All extra lines at the start and 1475end of each source file have been removed for consistency. Also, within 1476comments, all new sentences start with a single space instead of a double 1477space, again for consistency across the code base. 1478 1479Example Code and Data Size: These are the sizes for the OS-independent 1480acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1481debug version of the code includes the debug output trace mechanism and 1482has a much larger code and data size. 1483 1484 Previous Release: 1485 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 1486 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 1487 Current Release: 1488 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 1489 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 1490 1491 14922) iASL Compiler/Disassembler and Tools: 1493 1494AcpiExec: Improved the algorithm used for memory leak/corruption 1495detection. Added some intelligence to the code that maintains the global 1496list of allocated memory. The list is now ordered by allocated memory 1497address, significantly improving performance. When running AcpiExec on 1498the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 1499on the platform and/or the environment. Note, this performance 1500enhancement affects the AcpiExec utility only, not the kernel-resident 1501ACPICA code. 1502 1503Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 1504the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 1505incorrect table offset reported for invalid opcodes. Report the original 150632-bit value for bad ACPI_NAMEs (as well as the repaired name.) 1507 1508Disassembler: Enhanced the -vt option to emit the binary table data in 1509hex format to assist with debugging. 1510 1511Fixed a potential filename buffer overflow in osunixdir.c. Increased the 1512size of file structure. Colin Ian King. 1513 1514---------------------------------------- 151513 September 2012. Summary of changes for version 20120913: 1516 1517 15181) ACPICA Kernel-resident Subsystem: 1519 1520ACPI 5.0: Added two new notify types for the Hardware Error Notification 1521Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 1522and 1523MCE(6). 1524 1525Table Manager: Merged/removed duplicate code in the root table resize 1526functions. One function is external, the other is internal. Lv Zheng, 1527ACPICA 1528BZ 846. 1529 1530Makefiles: Completely removed the obsolete "Linux" makefiles under 1531acpica/generate/linux. These makefiles are obsolete and have been 1532replaced 1533by 1534the generic unix makefiles under acpica/generate/unix. 1535 1536Makefiles: Ensure that binary files always copied properly. Minor rule 1537change 1538to ensure that the final binary output files are always copied up to the 1539appropriate binary directory (bin32 or bin64.) 1540 1541Example Code and Data Size: These are the sizes for the OS-independent 1542acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1543debug 1544version of the code includes the debug output trace mechanism and has a 1545much 1546larger code and data size. 1547 1548 Previous Release: 1549 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 1550 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 1551 Current Release: 1552 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 1553 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 1554 1555 15562) iASL Compiler/Disassembler and Tools: 1557 1558Disassembler: Fixed a possible fault during the disassembly of resource 1559descriptors when a second parse is required because of the invocation of 1560external control methods within the table. With assistance from 1561adq@lidskialf.net. ACPICA BZ 976. 1562 1563iASL: Fixed a namepath optimization problem. An error can occur if the 1564parse 1565node that contains the namepath to be optimized does not have a parent 1566node 1567that is a named object. This change fixes the problem. 1568 1569iASL: Fixed a regression where the AML file is not deleted on errors. The 1570AML 1571output file should be deleted if there are any errors during the 1572compiler. 1573The 1574only exception is if the -f (force output) option is used. ACPICA BZ 974. 1575 1576iASL: Added a feature to automatically increase internal line buffer 1577sizes. 1578Via realloc(), automatically increase the internal line buffer sizes as 1579necessary to support very long source code lines. The current version of 1580the 1581preprocessor requires a buffer long enough to contain full source code 1582lines. 1583This change increases the line buffer(s) if the input lines go beyond the 1584current buffer size. This eliminates errors that occurred when a source 1585code 1586line was longer than the buffer. 1587 1588iASL: Fixed a problem with constant folding in method declarations. The 1589SyncLevel term is a ByteConstExpr, and incorrect code would be generated 1590if a 1591Type3 opcode was used. 1592 1593Debugger: Improved command help support. For incorrect argument count, 1594display 1595full help for the command. For help command itself, allow an argument to 1596specify a command. 1597 1598Test Suites: Several bug fixes for the ASLTS suite reduces the number of 1599errors during execution of the suite. Guan Chao. 1600 1601---------------------------------------- 160216 August 2012. Summary of changes for version 20120816: 1603 1604 16051) ACPICA Kernel-resident Subsystem: 1606 1607Removed all use of the deprecated _GTS and _BFS predefined methods. The 1608_GTS 1609(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 1610deprecated and will probably be removed from the ACPI specification. 1611Windows 1612does not invoke them, and reportedly never will. The final nail in the 1613coffin 1614is that the ACPI specification states that these methods must be run with 1615interrupts off, which is not going to happen in a kernel interpreter. 1616Note: 1617Linux has removed all use of the methods also. It was discovered that 1618invoking these functions caused failures on some machines, probably 1619because 1620they were never tested since Windows does not call them. Affects two 1621external 1622interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 1623ACPICA BZ 969. 1624 1625Implemented support for complex bit-packed buffers returned from the _PLD 1626(Physical Location of Device) predefined method. Adds a new external 1627interface, AcpiDecodePldBuffer that parses the buffer into a more usable 1628C 1629structure. Note: C Bitfields cannot be used for this type of predefined 1630structure since the memory layout of individual bitfields is not defined 1631by 1632the C language. In addition, there are endian concerns where a compiler 1633will 1634change the bitfield ordering based on the machine type. The new ACPICA 1635interface eliminates these issues, and should be called after _PLD is 1636executed. ACPICA BZ 954. 1637 1638Implemented a change to allow a scope change to root (via "Scope (\)") 1639during 1640execution of module-level ASL code (code that is executed at table load 1641time.) Lin Ming. 1642 1643Added the Windows8/Server2012 string for the _OSI method. This change 1644adds 1645a 1646new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 16472012. 1648 1649Added header support for the new ACPI tables DBG2 (Debug Port Table Type 16502) 1651and CSRT (Core System Resource Table). 1652 1653Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 1654names. This simplifies access to the buffers returned by these predefined 1655names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 1656 1657GPE support: Removed an extraneous parameter from the various low-level 1658internal GPE functions. Tang Feng. 1659 1660Removed the linux makefiles from the unix packages. The generate/linux 1661makefiles are obsolete and have been removed from the unix tarball 1662release 1663packages. The replacement makefiles are under generate/unix, and there is 1664a 1665top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 1666 1667Updates for Unix makefiles: 16681) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 16692) Update linker flags (move to end of command line) for AcpiExec 1670utility. 1671Guan Chao. 1672 1673Split ACPICA initialization functions to new file, utxfinit.c. Split from 1674utxface.c to improve modularity and reduce file size. 1675 1676Example Code and Data Size: These are the sizes for the OS-independent 1677acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1678debug version of the code includes the debug output trace mechanism and 1679has a 1680much larger code and data size. 1681 1682 Previous Release: 1683 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 1684 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 1685 Current Release: 1686 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 1687 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 1688 1689 16902) iASL Compiler/Disassembler and Tools: 1691 1692iASL: Fixed a problem with constant folding for fixed-length constant 1693expressions. The constant-folding code was not being invoked for constant 1694expressions that allow the use of type 3/4/5 opcodes to generate 1695constants 1696for expressions such as ByteConstExpr, WordConstExpr, etc. This could 1697result 1698in the generation of invalid AML bytecode. ACPICA BZ 970. 1699 1700iASL: Fixed a generation issue on newer versions of Bison. Newer versions 1701apparently automatically emit some of the necessary externals. This 1702change 1703handles these versions in order to eliminate generation warnings. 1704 1705Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 1706 1707Disassembler: Add support to decode _PLD buffers. The decoded buffer 1708appears 1709within comments in the output file. 1710 1711Debugger: Fixed a regression with the "Threads" command where 1712AE_BAD_PARAMETER was always returned. 1713 1714---------------------------------------- 171511 July 2012. Summary of changes for version 20120711: 1716 17171) ACPICA Kernel-resident Subsystem: 1718 1719Fixed a possible fault in the return package object repair code. Fixes a 1720problem that can occur when a lone package object is wrapped with an 1721outer 1722package object in order to force conformance to the ACPI specification. 1723Can 1724affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 1725_DLM, 1726_CSD, _PSD, _TSD. 1727 1728Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 1729PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 1730ARB_DIS bit must be implemented in the host-dependent C3 processor power 1731state 1732support. Note, ARB_DIS is obsolete and only applies to older chipsets, 1733both 1734Intel and other vendors. (for Intel: ICH4-M and earlier) 1735 1736This change removes the code to disable/enable bus master arbitration 1737during 1738suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 1739causes 1740resume problems on some machines. The change has been in use for over 1741seven 1742years within Linux. 1743 1744Implemented two new external interfaces to support host-directed dynamic 1745ACPI 1746table load and unload. They are intended to simplify the host 1747implementation 1748of hot-plug support: 1749 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 1750 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 1751table. 1752See the ACPICA reference for additional details. Adds one new file, 1753components/tables/tbxfload.c 1754 1755Implemented and deployed two new interfaces for errors and warnings that 1756are 1757known to be caused by BIOS/firmware issues: 1758 AcpiBiosError: Prints "ACPI Firmware Error" message. 1759 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 1760Deployed these new interfaces in the ACPICA Table Manager code for ACPI 1761table 1762and FADT errors. Additional deployment to be completed as appropriate in 1763the 1764future. The associated conditional macros are ACPI_BIOS_ERROR and 1765ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 1766ACPICA 1767BZ 1768843. 1769 1770Implicit notify support: ensure that no memory allocation occurs within a 1771critical region. This fix moves a memory allocation outside of the time 1772that a 1773spinlock is held. Fixes issues on systems that do not allow this 1774behavior. 1775Jung-uk Kim. 1776 1777Split exception code utilities and tables into a new file, 1778utilities/utexcep.c 1779 1780Example Code and Data Size: These are the sizes for the OS-independent 1781acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1782debug 1783version of the code includes the debug output trace mechanism and has a 1784much 1785larger code and data size. 1786 1787 Previous Release: 1788 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 1789 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 1790 Current Release: 1791 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 1792 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 1793 1794 17952) iASL Compiler/Disassembler and Tools: 1796 1797iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 1798of 17990. Jung-uk Kim. 1800 1801Debugger: Enhanced the "tables" command to emit additional information 1802about 1803the current set of ACPI tables, including the owner ID and flags decode. 1804 1805Debugger: Reimplemented the "unload" command to use the new 1806AcpiUnloadParentTable external interface. This command was disable 1807previously 1808due to need for an unload interface. 1809 1810AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 1811option 1812will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 1813 1814---------------------------------------- 181520 June 2012. Summary of changes for version 20120620: 1816 1817 18181) ACPICA Kernel-resident Subsystem: 1819 1820Implemented support to expand the "implicit notify" feature to allow 1821multiple 1822devices to be notified by a single GPE. This feature automatically 1823generates a 1824runtime device notification in the absence of a BIOS-provided GPE control 1825method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 1826notify is 1827provided by ACPICA for Windows compatibility, and is a workaround for 1828BIOS 1829AML 1830code errors. See the description of the AcpiSetupGpeForWake interface in 1831the 1832APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 1833 1834Changed some comments and internal function names to simplify and ensure 1835correctness of the Linux code translation. No functional changes. 1836 1837Example Code and Data Size: These are the sizes for the OS-independent 1838acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1839debug 1840version of the code includes the debug output trace mechanism and has a 1841much 1842larger code and data size. 1843 1844 Previous Release: 1845 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 1846 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 1847 Current Release: 1848 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 1849 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 1850 1851 18522) iASL Compiler/Disassembler and Tools: 1853 1854Disassembler: Added support to emit short, commented descriptions for the 1855ACPI 1856predefined names in order to improve the readability of the disassembled 1857output. ACPICA BZ 959. Changes include: 1858 1) Emit descriptions for all standard predefined names (_INI, _STA, 1859_PRW, 1860etc.) 1861 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 1862 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 1863etc.) 1864 1865AcpiSrc: Fixed several long-standing Linux code translation issues. 1866Argument 1867descriptions in function headers are now translated properly to lower 1868case 1869and 1870underscores. ACPICA BZ 961. Also fixes translation problems such as 1871these: 1872(old -> new) 1873 i_aSL -> iASL 1874 00-7_f -> 00-7F 1875 16_k -> 16K 1876 local_fADT -> local_FADT 1877 execute_oSI -> execute_OSI 1878 1879iASL: Fixed a problem where null bytes were inadvertently emitted into 1880some 1881listing files. 1882 1883iASL: Added the existing debug options to the standard help screen. There 1884are 1885no longer two different help screens. ACPICA BZ 957. 1886 1887AcpiHelp: Fixed some typos in the various predefined name descriptions. 1888Also 1889expand some of the descriptions where appropriate. 1890 1891iASL: Fixed the -ot option (display compile times/statistics). Was not 1892working 1893properly for standard output; only worked for the debug file case. 1894 1895---------------------------------------- 189618 May 2012. Summary of changes for version 20120518: 1897 1898 18991) ACPICA Core Subsystem: 1900 1901Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 1902defined 1903to block until asynchronous events such as notifies and GPEs have 1904completed. 1905Within ACPICA, it is only called before a notify or GPE handler is 1906removed/uninstalled. It also may be useful for the host OS within related 1907drivers such as the Embedded Controller driver. See the ACPICA reference 1908for 1909additional information. ACPICA BZ 868. 1910 1911ACPI Tables: Added a new error message for a possible overflow failure 1912during 1913the conversion of FADT 32-bit legacy register addresses to internal 1914common 191564- 1916bit GAS structure representation. The GAS has a one-byte "bit length" 1917field, 1918thus limiting the register length to 255 bits. ACPICA BZ 953. 1919 1920Example Code and Data Size: These are the sizes for the OS-independent 1921acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1922debug 1923version of the code includes the debug output trace mechanism and has a 1924much 1925larger code and data size. 1926 1927 Previous Release: 1928 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 1929 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 1930 Current Release: 1931 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 1932 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 1933 1934 19352) iASL Compiler/Disassembler and Tools: 1936 1937iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 1938macro. 1939This keyword was added late in the ACPI 5.0 release cycle and was not 1940implemented until now. 1941 1942Disassembler: Added support for Operation Region externals. Adds missing 1943support for operation regions that are defined in another table, and 1944referenced locally via a Field or BankField ASL operator. Now generates 1945the 1946correct External statement. 1947 1948Disassembler: Several additional fixes for the External() statement 1949generation 1950related to some ASL operators. Also, order the External() statements 1951alphabetically in the disassembler output. Fixes the External() 1952generation 1953for 1954the Create* field, Alias, and Scope operators: 1955 1) Create* buffer field operators - fix type mismatch warning on 1956disassembly 1957 2) Alias - implement missing External support 1958 3) Scope - fix to make sure all necessary externals are emitted. 1959 1960iASL: Improved pathname support. For include files, merge the prefix 1961pathname 1962with the file pathname and eliminate unnecessary components. Convert 1963backslashes in all pathnames to forward slashes, for readability. Include 1964file 1965pathname changes affect both #include and Include() type operators. 1966 1967iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 1968end 1969of a valid line by inserting a newline and then returning the EOF during 1970the 1971next call to GetNextLine. Prevents the line from being ignored due to EOF 1972condition. 1973 1974iASL: Implemented some changes to enhance the IDE support (-vi option.) 1975Error 1976and Warning messages are now correctly recognized for both the source 1977code 1978browser and the global error and warning counts. 1979 1980---------------------------------------- 198120 April 2012. Summary of changes for version 20120420: 1982 1983 19841) ACPICA Core Subsystem: 1985 1986Implemented support for multiple notify handlers. This change adds 1987support 1988to 1989allow multiple system and device notify handlers on Device, Thermal Zone, 1990and 1991Processor objects. This can simplify the host OS notification 1992implementation. 1993Also re-worked and restructured the entire notify support code to 1994simplify 1995handler installation, handler removal, notify event queuing, and notify 1996dispatch to handler(s). Note: there can still only be two global notify 1997handlers - one for system notifies and one for device notifies. There are 1998no 1999changes to the existing handler install/remove interfaces. Lin Ming, Bob 2000Moore, Rafael Wysocki. 2001 2002Fixed a regression in the package repair code where the object reference 2003count was calculated incorrectly. Regression was introduced in the commit 2004"Support to add Package wrappers". 2005 2006Fixed a couple possible memory leaks in the AML parser, in the error 2007recovery 2008path. Jesper Juhl, Lin Ming. 2009 2010Example Code and Data Size: These are the sizes for the OS-independent 2011acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2012debug version of the code includes the debug output trace mechanism and 2013has a 2014much larger code and data size. 2015 2016 Previous Release: 2017 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2018 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2019 Current Release: 2020 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2021 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 2022 2023 20242) iASL Compiler/Disassembler and Tools: 2025 2026iASL: Fixed a problem with the resource descriptor support where the 2027length 2028of the StartDependentFn and StartDependentFnNoPrio descriptors were not 2029included in cumulative descriptor offset, resulting in incorrect values 2030for 2031resource tags within resource descriptors appearing after a 2032StartDependent* 2033descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 2034 2035iASL and Preprocessor: Implemented full support for the #line directive 2036to 2037correctly track original source file line numbers through the .i 2038preprocessor 2039output file - for error and warning messages. 2040 2041iASL: Expand the allowable byte constants for address space IDs. 2042Previously, 2043the allowable range was 0x80-0xFF (user-defined spaces), now the range is 20440x0A-0xFF to allow for custom and new IDs without changing the compiler. 2045 2046iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 2047 2048iASL: Add option to completely disable the preprocessor (-Pn). 2049 2050iASL: Now emit all error/warning messages to standard error (stderr) by 2051default (instead of the previous stdout). 2052 2053ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 2054Update 2055for resource descriptor offset fix above. Update/cleanup error output 2056routines. Enable and send iASL errors/warnings to an error logfile 2057(error.txt). Send all other iASL output to a logfile (compiler.txt). 2058Fixed 2059several extraneous "unrecognized operator" messages. 2060 2061---------------------------------------- 206220 March 2012. Summary of changes for version 20120320: 2063 2064 20651) ACPICA Core Subsystem: 2066 2067Enhanced the sleep/wake interfaces to optionally execute the _GTS method 2068(Going To Sleep) and the _BFS method (Back From Sleep). Windows 2069apparently 2070does not execute these methods, and therefore these methods are often 2071untested. It has been seen on some systems where the execution of these 2072methods causes errors and also prevents the machine from entering S5. It 2073is 2074therefore suggested that host operating systems do not execute these 2075methods 2076by default. In the future, perhaps these methods can be optionally 2077executed 2078based on the age of the system and/or what is the newest version of 2079Windows 2080that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 2081and 2082AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 2083Ming. 2084 2085Fixed a problem where the length of the local/common FADT was set too 2086early. 2087The local FADT table length cannot be set to the common length until the 2088original length has been examined. There is code that checks the table 2089length 2090and sets various fields appropriately. This can affect older machines 2091with 2092early FADT versions. For example, this can cause inadvertent writes to 2093the 2094CST_CNT register. Julian Anastasov. 2095 2096Fixed a mapping issue related to a physical table override. Use the 2097deferred 2098mapping mechanism for tables loaded via the physical override OSL 2099interface. 2100This allows for early mapping before the virtual memory manager is 2101available. 2102Thomas Renninger, Bob Moore. 2103 2104Enhanced the automatic return-object repair code: Repair a common problem 2105with 2106predefined methods that are defined to return a variable-length Package 2107of 2108sub-objects. If there is only one sub-object, some BIOS ASL code 2109mistakenly 2110simply returns the single object instead of a Package with one sub- 2111object. 2112This new support will repair this error by wrapping a Package object 2113around 2114the original object, creating the correct and expected Package with one 2115sub- 2116object. Names that can be repaired in this manner include: _ALR, _CSD, 2117_HPX, 2118_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 2119939. 2120 2121Changed the exception code returned for invalid ACPI paths passed as 2122parameters to external interfaces such as AcpiEvaluateObject. Was 2123AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 2124 2125Example Code and Data Size: These are the sizes for the OS-independent 2126acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2127debug 2128version of the code includes the debug output trace mechanism and has a 2129much 2130larger code and data size. 2131 2132 Previous Release: 2133 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2134 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2135 Current Release: 2136 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 2137 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2138 2139 21402) iASL Compiler/Disassembler and Tools: 2141 2142iASL: Added the infrastructure and initial implementation of a integrated 2143C- 2144like preprocessor. This will simplify BIOS development process by 2145eliminating 2146the need for a separate preprocessing step during builds. On Windows, it 2147also 2148eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 2149features including full #define() macro support are still under 2150development. 2151These preprocessor directives are supported: 2152 #define 2153 #elif 2154 #else 2155 #endif 2156 #error 2157 #if 2158 #ifdef 2159 #ifndef 2160 #include 2161 #pragma message 2162 #undef 2163 #warning 2164In addition, these new command line options are supported: 2165 -D <symbol> Define symbol for preprocessor use 2166 -li Create preprocessed output file (*.i) 2167 -P Preprocess only and create preprocessor output file (*.i) 2168 2169Table Compiler: Fixed a problem where the equals operator within an 2170expression 2171did not work properly. 2172 2173Updated iASL to use the current versions of Bison/Flex. Updated the 2174Windows 2175project file to invoke these tools from the standard location. ACPICA BZ 2176904. 2177Versions supported: 2178 Flex for Windows: V2.5.4 2179 Bison for Windows: V2.4.1 2180 2181---------------------------------------- 218215 February 2012. Summary of changes for version 20120215: 2183 2184 21851) ACPICA Core Subsystem: 2186 2187There have been some major changes to the sleep/wake support code, as 2188described below (a - e). 2189 2190a) The AcpiLeaveSleepState has been split into two interfaces, similar to 2191AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 2192AcpiLeaveSleepStatePrep. This allows the host to perform actions between 2193the 2194time the _BFS method is called and the _WAK method is called. NOTE: all 2195hosts 2196must update their wake/resume code or else sleep/wake will not work 2197properly. 2198Rafael Wysocki. 2199 2200b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 2201_WAK 2202method. Some machines require that the GPEs are enabled before the _WAK 2203method 2204is executed. Thomas Renninger. 2205 2206c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 2207bit. 2208Some BIOS code assumes that WAK_STS will be cleared on resume and use it 2209to 2210determine whether the system is rebooting or resuming. Matthew Garrett. 2211 2212d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 2213Sleep) to 2214match the ACPI specification requirement. Rafael Wysocki. 2215 2216e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 2217registers within the V5 FADT. This support adds two new files: 2218hardware/hwesleep.c implements the support for the new registers. Moved 2219all 2220sleep/wake external interfaces to hardware/hwxfsleep.c. 2221 2222 2223Added a new OSL interface for ACPI table overrides, 2224AcpiOsPhysicalTableOverride. This interface allows the host to override a 2225table via a physical address, instead of the logical address required by 2226AcpiOsTableOverride. This simplifies the host implementation. Initial 2227implementation by Thomas Renninger. The ACPICA implementation creates a 2228single 2229shared function for table overrides that attempts both a logical and a 2230physical override. 2231 2232Expanded the OSL memory read/write interfaces to 64-bit data 2233(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 2234transfer support for GAS register structures passed to AcpiRead and 2235AcpiWrite. 2236 2237Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 2238custom 2239build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 2240model. 2241See the ACPICA reference for details. ACPICA BZ 942. This option removes 2242about 224310% of the code and 5% of the static data, and the following hardware 2244ACPI 2245features become unavailable: 2246 PM Event and Control registers 2247 SCI interrupt (and handler) 2248 Fixed Events 2249 General Purpose Events (GPEs) 2250 Global Lock 2251 ACPI PM timer 2252 FACS table (Waking vectors and Global Lock) 2253 2254Updated the unix tarball directory structure to match the ACPICA git 2255source 2256tree. This ensures that the generic unix makefiles work properly (in 2257generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 2258867. 2259 2260Updated the return value of the _REV predefined method to integer value 5 2261to 2262reflect ACPI 5.0 support. 2263 2264Moved the external ACPI PM timer interface prototypes to the public 2265acpixf.h 2266file where they belong. 2267 2268Example Code and Data Size: These are the sizes for the OS-independent 2269acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2270debug 2271version of the code includes the debug output trace mechanism and has a 2272much 2273larger code and data size. 2274 2275 Previous Release: 2276 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 2277 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 2278 Current Release: 2279 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 2280 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 2281 2282 22832) iASL Compiler/Disassembler and Tools: 2284 2285Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 2286descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 2287incorrectly displayed. 2288 2289AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 2290specification. 2291 2292---------------------------------------- 229311 January 2012. Summary of changes for version 20120111: 2294 2295 22961) ACPICA Core Subsystem: 2297 2298Implemented a new mechanism to allow host device drivers to check for 2299address 2300range conflicts with ACPI Operation Regions. Both SystemMemory and 2301SystemIO 2302address spaces are supported. A new external interface, 2303AcpiCheckAddressRange, 2304allows drivers to check an address range against the ACPI namespace. See 2305the 2306ACPICA reference for additional details. Adds one new file, 2307utilities/utaddress.c. Lin Ming, Bob Moore. 2308 2309Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 2310Control 2311and 2312Status registers, update the ACPI 5.0 flags, and update internal data 2313structures to handle an FADT larger than 256 bytes. The size of the ACPI 23145.0 2315FADT is 268 bytes. 2316 2317Updated all ACPICA copyrights and signons to 2012. Added the 2012 2318copyright to 2319all module headers and signons, including the standard Linux header. This 2320affects virtually every file in the ACPICA core subsystem, iASL compiler, 2321and 2322all ACPICA utilities. 2323 2324Example Code and Data Size: These are the sizes for the OS-independent 2325acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2326debug 2327version of the code includes the debug output trace mechanism and has a 2328much 2329larger code and data size. 2330 2331 Previous Release: 2332 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 2333 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 2334 Current Release: 2335 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 2336 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 2337 2338 23392) iASL Compiler/Disassembler and Tools: 2340 2341Disassembler: fixed a problem with the automatic resource tag generation 2342support. Fixes a problem where the resource tags are inadvertently not 2343constructed if the table being disassembled contains external references 2344to 2345control methods. Moved the actual construction of the tags to after the 2346final 2347namespace is constructed (after 2nd parse is invoked due to external 2348control 2349method references.) ACPICA BZ 941. 2350 2351Table Compiler: Make all "generic" operators caseless. These are the 2352operators 2353like UINT8, String, etc. Making these caseless improves ease-of-use. 2354ACPICA BZ 2355934. 2356 2357---------------------------------------- 235823 November 2011. Summary of changes for version 20111123: 2359 23600) ACPI 5.0 Support: 2361 2362This release contains full support for the ACPI 5.0 specification, as 2363summarized below. 2364 2365Reduced Hardware Support: 2366------------------------- 2367 2368This support allows for ACPI systems without the usual ACPI hardware. 2369This 2370support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 2371will 2372not attempt to initialize or use any of the usual ACPI hardware. Note, 2373when 2374this flag is set, all of the following ACPI hardware is assumed to be not 2375present and is not initialized or accessed: 2376 2377 General Purpose Events (GPEs) 2378 Fixed Events (PM1a/PM1b and PM Control) 2379 Power Management Timer and Console Buttons (power/sleep) 2380 Real-time Clock Alarm 2381 Global Lock 2382 System Control Interrupt (SCI) 2383 The FACS is assumed to be non-existent 2384 2385ACPI Tables: 2386------------ 2387 2388All new tables and updates to existing tables are fully supported in the 2389ACPICA headers (for use by device drivers), the disassembler, and the 2390iASL 2391Data Table Compiler. ACPI 5.0 defines these new tables: 2392 2393 BGRT /* Boot Graphics Resource Table */ 2394 DRTM /* Dynamic Root of Trust for Measurement table */ 2395 FPDT /* Firmware Performance Data Table */ 2396 GTDT /* Generic Timer Description Table */ 2397 MPST /* Memory Power State Table */ 2398 PCCT /* Platform Communications Channel Table */ 2399 PMTT /* Platform Memory Topology Table */ 2400 RASF /* RAS Feature table */ 2401 2402Operation Regions/SpaceIDs: 2403--------------------------- 2404 2405All new operation regions are fully supported by the iASL compiler, the 2406disassembler, and the ACPICA runtime code (for dispatch to region 2407handlers.) 2408The new operation region Space IDs are: 2409 2410 GeneralPurposeIo 2411 GenericSerialBus 2412 2413Resource Descriptors: 2414--------------------- 2415 2416All new ASL resource descriptors are fully supported by the iASL 2417compiler, 2418the 2419ASL/AML disassembler, and the ACPICA runtime Resource Manager code 2420(including 2421all new predefined resource tags). New descriptors are: 2422 2423 FixedDma 2424 GpioIo 2425 GpioInt 2426 I2cSerialBus 2427 SpiSerialBus 2428 UartSerialBus 2429 2430ASL/AML Operators, New and Modified: 2431------------------------------------ 2432 2433One new operator is added, the Connection operator, which is used to 2434associate 2435a GeneralPurposeIo or GenericSerialBus resource descriptor with 2436individual 2437field objects within an operation region. Several new protocols are 2438associated 2439with the AccessAs operator. All are fully supported by the iASL compiler, 2440disassembler, and runtime ACPICA AML interpreter: 2441 2442 Connection // Declare Field Connection 2443attributes 2444 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 2445 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 2446Protocol 2447 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 2448 RawDataBuffer // Data type for Vendor Data 2449fields 2450 2451Predefined ASL/AML Objects: 2452--------------------------- 2453 2454All new predefined objects/control-methods are supported by the iASL 2455compiler 2456and the ACPICA runtime validation/repair (arguments and return values.) 2457New 2458predefined names include the following: 2459 2460Standard Predefined Names (Objects or Control Methods): 2461 _AEI, _CLS, _CPC, _CWS, _DEP, 2462 _DLM, _EVT, _GCP, _CRT, _GWS, 2463 _HRV, _PRE, _PSE, _SRT, _SUB. 2464 2465Resource Tags (Names used to access individual fields within resource 2466descriptors): 2467 _DBT, _DPL, _DRS, _END, _FLC, 2468 _IOR, _LIN, _MOD, _PAR, _PHA, 2469 _PIN, _PPI, _POL, _RXL, _SLV, 2470 _SPE, _STB, _TXL, _VEN. 2471 2472ACPICA External Interfaces: 2473--------------------------- 2474 2475Several new interfaces have been defined for use by ACPI-related device 2476drivers and other host OS services: 2477 2478AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 2479to 2480acquire and release AML mutexes that are defined in the DSDT/SSDT tables 2481provided by the BIOS. They are intended to be used in conjunction with 2482the 2483ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 2484mutual exclusion with the AML code/interpreter. 2485 2486AcpiGetEventResources: Returns the (formatted) resource descriptors as 2487defined 2488by the ACPI 5.0 _AEI object (ACPI Event Information). This object 2489provides 2490resource descriptors associated with hardware-reduced platform events, 2491similar 2492to the AcpiGetCurrentResources interface. 2493 2494Operation Region Handlers: For General Purpose IO and Generic Serial Bus 2495operation regions, information about the Connection() object and any 2496optional 2497length information is passed to the region handler within the Context 2498parameter. 2499 2500AcpiBufferToResource: This interface converts a raw AML buffer containing 2501a 2502resource template or resource descriptor to the ACPI_RESOURCE internal 2503format 2504suitable for use by device drivers. Can be used by an operation region 2505handler 2506to convert the Connection() buffer object into a ACPI_RESOURCE. 2507 2508Miscellaneous/Tools/TestSuites: 2509------------------------------- 2510 2511Support for extended _HID names (Four alpha characters instead of three). 2512Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 2513Support for ACPI 5.0 features in the ASLTS test suite. 2514Fully updated documentation (ACPICA and iASL reference documents.) 2515 2516ACPI Table Definition Language: 2517------------------------------- 2518 2519Support for this language was implemented and released as a subsystem of 2520the 2521iASL compiler in 2010. (See the iASL compiler User Guide.) 2522 2523 2524Non-ACPI 5.0 changes for this release: 2525-------------------------------------- 2526 25271) ACPICA Core Subsystem: 2528 2529Fix a problem with operation region declarations where a failure can 2530occur 2531if 2532the region name and an argument that evaluates to an object (such as the 2533region address) are in different namespace scopes. Lin Ming, ACPICA BZ 2534937. 2535 2536Do not abort an ACPI table load if an invalid space ID is found within. 2537This 2538will be caught later if the offending method is executed. ACPICA BZ 925. 2539 2540Fixed an issue with the FFixedHW space ID where the ID was not always 2541recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 2542 2543Fixed a problem with the 32-bit generation of the unix-specific OSL 2544(osunixxf.c). Lin Ming, ACPICA BZ 936. 2545 2546Several changes made to enable generation with the GCC 4.6 compiler. 2547ACPICA BZ 2548935. 2549 2550New error messages: Unsupported I/O requests (not 8/16/32 bit), and 2551Index/Bank 2552field registers out-of-range. 2553 25542) iASL Compiler/Disassembler and Tools: 2555 2556iASL: Implemented the __PATH__ operator, which returns the full pathname 2557of 2558the current source file. 2559 2560AcpiHelp: Automatically display expanded keyword information for all ASL 2561operators. 2562 2563Debugger: Add "Template" command to disassemble/dump resource template 2564buffers. 2565 2566Added a new master script to generate and execute the ASLTS test suite. 2567Automatically handles 32- and 64-bit generation. See tests/aslts.sh 2568 2569iASL: Fix problem with listing generation during processing of the 2570Switch() 2571operator where AML listing was disabled until the entire Switch block was 2572completed. 2573 2574iASL: Improve support for semicolon statement terminators. Fix "invalid 2575character" message for some cases when the semicolon is used. Semicolons 2576are 2577now allowed after every <Term> grammar element. ACPICA BZ 927. 2578 2579iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 2580923. 2581 2582Disassembler: Fix problem with disassembly of the DataTableRegion 2583operator 2584where an inadvertent "Unhandled deferred opcode" message could be 2585generated. 2586 25873) Example Code and Data Size 2588 2589These are the sizes for the OS-independent acpica.lib produced by the 2590Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 2591includes the debug output trace mechanism and has a much larger code and 2592data 2593size. 2594 2595 Previous Release: 2596 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 2597 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 2598 Current Release: 2599 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 2600 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 2601 2602---------------------------------------- 260322 September 2011. Summary of changes for version 20110922: 2604 26050) ACPI 5.0 News: 2606 2607Support for ACPI 5.0 in ACPICA has been underway for several months and 2608will 2609be released at the same time that ACPI 5.0 is officially released. 2610 2611The ACPI 5.0 specification is on track for release in the next few 2612months. 2613 26141) ACPICA Core Subsystem: 2615 2616Fixed a problem where the maximum sleep time for the Sleep() operator was 2617intended to be limited to two seconds, but was inadvertently limited to 261820 2619seconds instead. 2620 2621Linux and Unix makefiles: Added header file dependencies to ensure 2622correct 2623generation of ACPICA core code and utilities. Also simplified the 2624makefiles 2625considerably through the use of the vpath variable to specify search 2626paths. 2627ACPICA BZ 924. 2628 26292) iASL Compiler/Disassembler and Tools: 2630 2631iASL: Implemented support to check the access length for all fields 2632created to 2633access named Resource Descriptor fields. For example, if a resource field 2634is 2635defined to be two bits, a warning is issued if a CreateXxxxField() is 2636used 2637with an incorrect bit length. This is implemented for all current 2638resource 2639descriptor names. ACPICA BZ 930. 2640 2641Disassembler: Fixed a byte ordering problem with the output of 24-bit and 264256- 2643bit integers. 2644 2645iASL: Fixed a couple of issues associated with variable-length package 2646objects. 1) properly handle constants like One, Ones, Zero -- do not make 2647a 2648VAR_PACKAGE when these are used as a package length. 2) Allow the 2649VAR_PACKAGE 2650opcode (in addition to PACKAGE) when validating object types for 2651predefined 2652names. 2653 2654iASL: Emit statistics for all output files (instead of just the ASL input 2655and 2656AML output). Includes listings, hex files, etc. 2657 2658iASL: Added -G option to the table compiler to allow the compilation of 2659custom 2660ACPI tables. The only part of a table that is required is the standard 266136- 2662byte 2663ACPI header. 2664 2665AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 2666headers), 2667which also adds correct 64-bit support. Also, now all output filenames 2668are 2669completely lower case. 2670 2671AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 2672loading table files. A warning is issued for any such tables. The only 2673exception is an FADT. This also fixes a possible fault when attempting to 2674load 2675non-AML tables. ACPICA BZ 932. 2676 2677AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 2678a 2679missing table terminator could cause a fault when using the -p option. 2680 2681AcpiSrc: Fixed a possible divide-by-zero fault when generating file 2682statistics. 2683 26843) Example Code and Data Size 2685 2686These are the sizes for the OS-independent acpica.lib produced by the 2687Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 2688includes the debug output trace mechanism and has a much larger code and 2689data 2690size. 2691 2692 Previous Release (VC 9.0): 2693 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 2694 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 2695 Current Release (VC 9.0): 2696 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 2697 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 2698 2699 2700---------------------------------------- 270123 June 2011. Summary of changes for version 20110623: 2702 27031) ACPI CA Core Subsystem: 2704 2705Updated the predefined name repair mechanism to not attempt repair of a 2706_TSS 2707return object if a _PSS object is present. We can only sort the _TSS 2708return 2709package if there is no _PSS within the same scope. This is because if 2710_PSS 2711is 2712present, the ACPI specification dictates that the _TSS Power Dissipation 2713field 2714is to be ignored, and therefore some BIOSs leave garbage values in the 2715_TSS 2716Power field(s). In this case, it is best to just return the _TSS package 2717as- 2718is. Reported by, and fixed with assistance from Fenghua Yu. 2719 2720Added an option to globally disable the control method return value 2721validation 2722and repair. This runtime option can be used to disable return value 2723repair 2724if 2725this is causing a problem on a particular machine. Also added an option 2726to 2727AcpiExec (-dr) to set this disable flag. 2728 2729All makefiles and project files: Major changes to improve generation of 2730ACPICA 2731tools. ACPICA BZ 912: 2732 Reduce default optimization levels to improve compatibility 2733 For Linux, add strict-aliasing=0 for gcc 4 2734 Cleanup and simplify use of command line defines 2735 Cleanup multithread library support 2736 Improve usage messages 2737 2738Linux-specific header: update handling of THREAD_ID and pthread. For the 273932- 2740bit case, improve casting to eliminate possible warnings, especially with 2741the 2742acpica tools. 2743 2744Example Code and Data Size: These are the sizes for the OS-independent 2745acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2746debug 2747version of the code includes the debug output trace mechanism and has a 2748much 2749larger code and data size. 2750 2751 Previous Release (VC 9.0): 2752 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 2753 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 2754 Current Release (VC 9.0): 2755 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 2756 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 2757 27582) iASL Compiler/Disassembler and Tools: 2759 2760With this release, a new utility named "acpihelp" has been added to the 2761ACPICA 2762package. This utility summarizes the ACPI specification chapters for the 2763ASL 2764and AML languages. It generates under Linux/Unix as well as Windows, and 2765provides the following functionality: 2766 Find/display ASL operator(s) -- with description and syntax. 2767 Find/display ASL keyword(s) -- with exact spelling and descriptions. 2768 Find/display ACPI predefined name(s) -- with description, number 2769 of arguments, and the return value data type. 2770 Find/display AML opcode name(s) -- with opcode, arguments, and 2771grammar. 2772 Decode/display AML opcode -- with opcode name, arguments, and 2773grammar. 2774 2775Service Layers: Make multi-thread support configurable. Conditionally 2776compile 2777the multi-thread support so that threading libraries will not be linked 2778if 2779not 2780necessary. The only tool that requires multi-thread support is AcpiExec. 2781 2782iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 2783of 2784Bison appear to want the interface to yyerror to be a const char * (or at 2785least this is a problem when generating iASL on some systems.) ACPICA BZ 2786923 2787Pierre Lejeune. 2788 2789Tools: Fix for systems where O_BINARY is not defined. Only used for 2790Windows 2791versions of the tools. 2792 2793---------------------------------------- 279427 May 2011. Summary of changes for version 20110527: 2795 27961) ACPI CA Core Subsystem: 2797 2798ASL Load() operator: Reinstate most restrictions on the incoming ACPI 2799table 2800signature. Now, only allow SSDT, OEMx, and a null signature. History: 2801 1) Originally, we checked the table signature for "SSDT" or "PSDT". 2802 (PSDT is now obsolete.) 2803 2) We added support for OEMx tables, signature "OEM" plus a fourth 2804 "don't care" character. 2805 3) Valid tables were encountered with a null signature, so we just 2806 gave up on validating the signature, (05/2008). 2807 4) We encountered non-AML tables such as the MADT, which caused 2808 interpreter errors and kernel faults. So now, we once again allow 2809 only SSDT, OEMx, and now, also a null signature. (05/2011). 2810 2811Added the missing _TDL predefined name to the global name list in order 2812to 2813enable validation. Affects both the core ACPICA code and the iASL 2814compiler. 2815 2816Example Code and Data Size: These are the sizes for the OS-independent 2817acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2818debug 2819version of the code includes the debug output trace mechanism and has a 2820much 2821larger code and data size. 2822 2823 Previous Release (VC 9.0): 2824 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 2825 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 2826 Current Release (VC 9.0): 2827 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 2828 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 2829 28302) iASL Compiler/Disassembler and Tools: 2831 2832Debugger/AcpiExec: Implemented support for "complex" method arguments on 2833the 2834debugger command line. This adds support beyond simple integers -- 2835including 2836Strings, Buffers, and Packages. Includes support for nested packages. 2837Increased the default command line buffer size to accommodate these 2838arguments. 2839See the ACPICA reference for details and syntax. ACPICA BZ 917. 2840 2841Debugger/AcpiExec: Implemented support for "default" method arguments for 2842the 2843Execute/Debug command. Now, the debugger will always invoke a control 2844method 2845with the required number of arguments -- even if the command line 2846specifies 2847none or insufficient arguments. It uses default integer values for any 2848missing 2849arguments. Also fixes a bug where only six method arguments maximum were 2850supported instead of the required seven. 2851 2852Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 2853and 2854also return status in order to prevent buffer overruns. See the ACPICA 2855reference for details and syntax. ACPICA BZ 921 2856 2857iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 2858makefiles to simplify support for the two different but similar parser 2859generators, bison and yacc. 2860 2861Updated the generic unix makefile for gcc 4. The default gcc version is 2862now 2863expected to be 4 or greater, since options specific to gcc 4 are used. 2864 2865---------------------------------------- 286613 April 2011. Summary of changes for version 20110413: 2867 28681) ACPI CA Core Subsystem: 2869 2870Implemented support to execute a so-called "orphan" _REG method under the 2871EC 2872device. This change will force the execution of a _REG method underneath 2873the 2874EC 2875device even if there is no corresponding operation region of type 2876EmbeddedControl. Fixes a problem seen on some machines and apparently is 2877compatible with Windows behavior. ACPICA BZ 875. 2878 2879Added more predefined methods that are eligible for automatic NULL 2880package 2881element removal. This change adds another group of predefined names to 2882the 2883list 2884of names that can be repaired by having NULL package elements dynamically 2885removed. This group are those methods that return a single variable- 2886length 2887package containing simple data types such as integers, buffers, strings. 2888This 2889includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 2890_PSL, 2891_Sx, 2892and _TZD. ACPICA BZ 914. 2893 2894Split and segregated all internal global lock functions to a new file, 2895evglock.c. 2896 2897Updated internal address SpaceID for DataTable regions. Moved this 2898internal 2899space 2900id in preparation for ACPI 5.0 changes that will include some new space 2901IDs. 2902This 2903change should not affect user/host code. 2904 2905Example Code and Data Size: These are the sizes for the OS-independent 2906acpica.lib 2907produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 2908version of 2909the code includes the debug output trace mechanism and has a much larger 2910code 2911and 2912data size. 2913 2914 Previous Release (VC 9.0): 2915 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 2916 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 2917 Current Release (VC 9.0): 2918 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 2919 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 2920 29212) iASL Compiler/Disassembler and Tools: 2922 2923iASL/DTC: Major update for new grammar features. Allow generic data types 2924in 2925custom ACPI tables. Field names are now optional. Any line can be split 2926to 2927multiple lines using the continuation char (\). Large buffers now use 2928line- 2929continuation character(s) and no colon on the continuation lines. See the 2930grammar 2931update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 2932Moore. 2933 2934iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 2935statements. 2936Since the parser stuffs a "zero" as the return value for these statements 2937(due 2938to 2939the underlying AML grammar), they were seen as "return with value" by the 2940iASL 2941semantic checking. They are now seen correctly as "null" return 2942statements. 2943 2944iASL: Check if a_REG declaration has a corresponding Operation Region. 2945Adds a 2946check for each _REG to ensure that there is in fact a corresponding 2947operation 2948region declaration in the same scope. If not, the _REG method is not very 2949useful 2950since it probably won't be executed. ACPICA BZ 915. 2951 2952iASL/DTC: Finish support for expression evaluation. Added a new 2953expression 2954parser 2955that implements c-style operator precedence and parenthesization. ACPICA 2956bugzilla 2957908. 2958 2959Disassembler/DTC: Remove support for () and <> style comments in data 2960tables. 2961Now 2962that DTC has full expression support, we don't want to have comment 2963strings 2964that 2965start with a parentheses or a less-than symbol. Now, only the standard /* 2966and 2967// 2968comments are supported, as well as the bracket [] comments. 2969 2970AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 2971"unusual" 2972headers in the acpidump file. Update the header validation to support 2973these 2974tables. Problem introduced in previous AcpiXtract version in the change 2975to 2976support "wrong checksum" error messages emitted by acpidump utility. 2977 2978iASL: Add a * option to generate all template files (as a synonym for 2979ALL) 2980as 2981in 2982"iasl -T *" or "iasl -T ALL". 2983 2984iASL/DTC: Do not abort compiler on fatal errors. We do not want to 2985completely 2986abort the compiler on "fatal" errors, simply should abort the current 2987compile. 2988This allows multiple compiles with a single (possibly wildcard) compiler 2989invocation. 2990 2991---------------------------------------- 299216 March 2011. Summary of changes for version 20110316: 2993 29941) ACPI CA Core Subsystem: 2995 2996Fixed a problem caused by a _PRW method appearing at the namespace root 2997scope 2998during the setup of wake GPEs. A fault could occur if a _PRW directly 2999under 3000the 3001root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 3002 3003Implemented support for "spurious" Global Lock interrupts. On some 3004systems, a 3005global lock interrupt can occur without the pending flag being set. Upon 3006a 3007GL 3008interrupt, we now ensure that a thread is actually waiting for the lock 3009before 3010signaling GL availability. Rafael Wysocki, Bob Moore. 3011 3012Example Code and Data Size: These are the sizes for the OS-independent 3013acpica.lib 3014produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 3015version of 3016the code includes the debug output trace mechanism and has a much larger 3017code 3018and 3019data size. 3020 3021 Previous Release (VC 9.0): 3022 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3023 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3024 Current Release (VC 9.0): 3025 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 3026 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 3027 30282) iASL Compiler/Disassembler and Tools: 3029 3030Implemented full support for the "SLIC" ACPI table. Includes support in 3031the 3032header files, disassembler, table compiler, and template generator. Bob 3033Moore, 3034Lin Ming. 3035 3036AcpiXtract: Correctly handle embedded comments and messages from 3037AcpiDump. 3038Apparently some or all versions of acpidump will occasionally emit a 3039comment 3040like 3041"Wrong checksum", etc., into the dump file. This was causing problems for 3042AcpiXtract. ACPICA BZ 905. 3043 3044iASL: Fix the Linux makefile by removing an inadvertent double file 3045inclusion. 3046ACPICA BZ 913. 3047 3048AcpiExec: Update installation of operation region handlers. Install one 3049handler 3050for a user-defined address space. This is used by the ASL test suite 3051(ASLTS). 3052 3053---------------------------------------- 305411 February 2011. Summary of changes for version 20110211: 3055 30561) ACPI CA Core Subsystem: 3057 3058Added a mechanism to defer _REG methods for some early-installed 3059handlers. 3060Most user handlers should be installed before call to 3061AcpiEnableSubsystem. 3062However, Event handlers and region handlers should be installed after 3063AcpiInitializeObjects. Override handlers for the "default" regions should 3064be 3065installed early, however. This change executes all _REG methods for the 3066default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 3067chicken/egg issues between them. ACPICA BZ 848. 3068 3069Implemented an optimization for GPE detection. This optimization will 3070simply 3071ignore GPE registers that contain no enabled GPEs -- there is no need to 3072read the register since this information is available internally. This 3073becomes more important on machines with a large GPE space. ACPICA 3074bugzilla 3075884. Lin Ming. Suggestion from Joe Liu. 3076 3077Removed all use of the highly unreliable FADT revision field. The 3078revision 3079number in the FADT has been found to be completely unreliable and cannot 3080be 3081trusted. Only the actual table length can be used to infer the version. 3082This 3083change updates the ACPICA core and the disassembler so that both no 3084longer 3085even look at the FADT version and instead depend solely upon the FADT 3086length. 3087 3088Fix an unresolved name issue for the no-debug and no-error-message source 3089generation cases. The _AcpiModuleName was left undefined in these cases, 3090but 3091it is actually needed as a parameter to some interfaces. Define 3092_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 3093 3094Split several large files (makefiles and project files updated) 3095 utglobal.c -> utdecode.c 3096 dbcomds.c -> dbmethod.c dbnames.c 3097 dsopcode.c -> dsargs.c dscontrol.c 3098 dsload.c -> dsload2.c 3099 aslanalyze.c -> aslbtypes.c aslwalks.c 3100 3101Example Code and Data Size: These are the sizes for the OS-independent 3102acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3103debug version of the code includes the debug output trace mechanism and 3104has 3105a much larger code and data size. 3106 3107 Previous Release (VC 9.0): 3108 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3109 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3110 Current Release (VC 9.0): 3111 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3112 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3113 31142) iASL Compiler/Disassembler and Tools: 3115 3116iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 3117These are useful C-style macros with the standard definitions. ACPICA 3118bugzilla 898. 3119 3120iASL/DTC: Added support for integer expressions and labels. Support for 3121full 3122expressions for all integer fields in all ACPI tables. Support for labels 3123in 3124"generic" portions of tables such as UEFI. See the iASL reference manual. 3125 3126Debugger: Added a command to display the status of global handlers. The 3127"handlers" command will display op region, fixed event, and miscellaneous 3128global handlers. installation status -- and for op regions, whether 3129default 3130or user-installed handler will be used. 3131 3132iASL: Warn if reserved method incorrectly returns a value. Many 3133predefined 3134names are defined such that they do not return a value. If implemented as 3135a 3136method, issue a warning if such a name explicitly returns a value. ACPICA 3137Bugzilla 855. 3138 3139iASL: Added detection of GPE method name conflicts. Detects a conflict 3140where 3141there are two GPE methods of the form _Lxy and _Exy in the same scope. 3142(For 3143example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 3144 3145iASL/DTC: Fixed a couple input scanner issues with comments and line 3146numbers. Comment remover could get confused and miss a comment ending. 3147Fixed 3148a problem with line counter maintenance. 3149 3150iASL/DTC: Reduced the severity of some errors from fatal to error. There 3151is 3152no need to abort on simple errors within a field definition. 3153 3154Debugger: Simplified the output of the help command. All help output now 3155in 3156a single screen, instead of help subcommands. ACPICA Bugzilla 897. 3157 3158---------------------------------------- 315912 January 2011. Summary of changes for version 20110112: 3160 31611) ACPI CA Core Subsystem: 3162 3163Fixed a race condition between method execution and namespace walks that 3164can 3165possibly cause a fault. The problem was apparently introduced in version 316620100528 as a result of a performance optimization that reduces the 3167number 3168of 3169namespace walks upon method exit by using the delete_namespace_subtree 3170function instead of the delete_namespace_by_owner function used 3171previously. 3172Bug is a missing namespace lock in the delete_namespace_subtree function. 3173dana.myers@oracle.com 3174 3175Fixed several issues and a possible fault with the automatic "serialized" 3176method support. History: This support changes a method to "serialized" on 3177the 3178fly if the method generates an AE_ALREADY_EXISTS error, indicating the 3179possibility that it cannot handle reentrancy. This fix repairs a couple 3180of 3181issues seen in the field, especially on machines with many cores: 3182 3183 1) Delete method children only upon the exit of the last thread, 3184 so as to not delete objects out from under other running threads 3185 (and possibly causing a fault.) 3186 2) Set the "serialized" bit for the method only upon the exit of the 3187 Last thread, so as to not cause deadlock when running threads 3188 attempt to exit. 3189 3) Cleanup the use of the AML "MethodFlags" and internal method flags 3190 so that there is no longer any confusion between the two. 3191 3192 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 3193 3194Debugger: Now lock the namespace for duration of a namespace dump. 3195Prevents 3196issues if the namespace is changing dynamically underneath the debugger. 3197Especially affects temporary namespace nodes, since the debugger displays 3198these also. 3199 3200Updated the ordering of include files. The ACPICA headers should appear 3201before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 3202set 3203any necessary compiler-specific defines, etc. Affects the ACPI-related 3204tools 3205and utilities. 3206 3207Updated all ACPICA copyrights and signons to 2011. Added the 2011 3208copyright 3209to all module headers and signons, including the Linux header. This 3210affects 3211virtually every file in the ACPICA core subsystem, iASL compiler, and all 3212utilities. 3213 3214Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 3215project files for VC++ 6.0 are now obsolete. New project files can be 3216found 3217under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 3218details. 3219 3220Example Code and Data Size: These are the sizes for the OS-independent 3221acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3222debug version of the code includes the debug output trace mechanism and 3223has a 3224much larger code and data size. 3225 3226 Previous Release (VC 6.0): 3227 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 3228 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 3229 Current Release (VC 9.0): 3230 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 3231 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 3232 32332) iASL Compiler/Disassembler and Tools: 3234 3235iASL: Added generic data types to the Data Table compiler. Add "generic" 3236data 3237types such as UINT32, String, Unicode, etc., to simplify the generation 3238of 3239platform-defined tables such as UEFI. Lin Ming. 3240 3241iASL: Added listing support for the Data Table Compiler. Adds listing 3242support 3243(-l) to display actual binary output for each line of input code. 3244 3245---------------------------------------- 324609 December 2010. Summary of changes for version 20101209: 3247 32481) ACPI CA Core Subsystem: 3249 3250Completed the major overhaul of the GPE support code that was begun in 3251July 32522010. Major features include: removal of _PRW execution in ACPICA (host 3253executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 3254changes to existing interfaces, simplification of GPE handler operation, 3255and 3256a handful of new interfaces: 3257 3258 AcpiUpdateAllGpes 3259 AcpiFinishGpe 3260 AcpiSetupGpeForWake 3261 AcpiSetGpeWakeMask 3262 One new file, evxfgpe.c to consolidate all external GPE interfaces. 3263 3264See the ACPICA Programmer Reference for full details and programming 3265information. See the new section 4.4 "General Purpose Event (GPE) 3266Support" 3267for a full overview, and section 8.7 "ACPI General Purpose Event 3268Management" 3269for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 3270Ming, 3271Bob Moore, Rafael Wysocki. 3272 3273Implemented a new GPE feature for Windows compatibility, the "Implicit 3274Wake 3275GPE Notify". This feature will automatically issue a Notify(2) on a 3276device 3277when a Wake GPE is received if there is no corresponding GPE method or 3278handler. ACPICA BZ 870. 3279 3280Fixed a problem with the Scope() operator during table parse and load 3281phase. 3282During load phase (table load or method execution), the scope operator 3283should 3284not enter the target into the namespace. Instead, it should open a new 3285scope 3286at the target location. Linux BZ 19462, ACPICA BZ 882. 3287 3288Example Code and Data Size: These are the sizes for the OS-independent 3289acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3290debug version of the code includes the debug output trace mechanism and 3291has a 3292much larger code and data size. 3293 3294 Previous Release: 3295 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 3296 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 3297 Current Release: 3298 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3299 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3300 33012) iASL Compiler/Disassembler and Tools: 3302 3303iASL: Relax the alphanumeric restriction on _CID strings. These strings 3304are 3305"bus-specific" per the ACPI specification, and therefore any characters 3306are 3307acceptable. The only checks that can be performed are for a null string 3308and 3309perhaps for a leading asterisk. ACPICA BZ 886. 3310 3311iASL: Fixed a problem where a syntax error that caused a premature EOF 3312condition on the source file emitted a very confusing error message. The 3313premature EOF is now detected correctly. ACPICA BZ 891. 3314 3315Disassembler: Decode the AccessSize within a Generic Address Structure 3316(byte 3317access, word access, etc.) Note, this field does not allow arbitrary bit 3318access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 3319 3320New: AcpiNames utility - Example namespace dump utility. Shows an example 3321of 3322ACPICA configuration for a minimal namespace dump utility. Uses table and 3323namespace managers, but no AML interpreter. Does not add any 3324functionality 3325over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 3326partition and configure ACPICA. ACPICA BZ 883. 3327 3328AML Debugger: Increased the debugger buffer size for method return 3329objects. 3330Was 4K, increased to 16K. Also enhanced error messages for debugger 3331method 3332execution, including the buffer overflow case. 3333 3334---------------------------------------- 333513 October 2010. Summary of changes for version 20101013: 3336 33371) ACPI CA Core Subsystem: 3338 3339Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 3340now 3341clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 3342HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 3343 3344Changed the type of the predefined namespace object _TZ from ThermalZone 3345to 3346Device. This was found to be confusing to the host software that 3347processes 3348the various thermal zones, since _TZ is not really a ThermalZone. 3349However, 3350a 3351Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 3352Zhang. 3353 3354Added Windows Vista SP2 to the list of supported _OSI strings. The actual 3355string is "Windows 2006 SP2". 3356 3357Eliminated duplicate code in AcpiUtExecute* functions. Now that the 3358nsrepair 3359code automatically repairs _HID-related strings, this type of code is no 3360longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 3361878. 3362 3363Example Code and Data Size: These are the sizes for the OS-independent 3364acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3365debug version of the code includes the debug output trace mechanism and 3366has a 3367much larger code and data size. 3368 3369 Previous Release: 3370 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3371 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3372 Current Release: 3373 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3374 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3375 33762) iASL Compiler/Disassembler and Tools: 3377 3378iASL: Implemented additional compile-time validation for _HID strings. 3379The 3380non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 3381length 3382of 3383the string must be exactly seven or eight characters. For both _HID and 3384_CID 3385strings, all characters must be alphanumeric. ACPICA BZ 874. 3386 3387iASL: Allow certain "null" resource descriptors. Some BIOS code creates 3388descriptors that are mostly or all zeros, with the expectation that they 3389will 3390be filled in at runtime. iASL now allows this as long as there is a 3391"resource 3392tag" (name) associated with the descriptor, which gives the ASL a handle 3393needed to modify the descriptor. ACPICA BZ 873. 3394 3395Added single-thread support to the generic Unix application OSL. 3396Primarily 3397for iASL support, this change removes the use of semaphores in the 3398single- 3399threaded ACPICA tools/applications - increasing performance. The 3400_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 3401option. ACPICA BZ 879. 3402 3403AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 3404support 3405for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 3406 3407iASL: Moved all compiler messages to a new file, aslmessages.h. 3408 3409---------------------------------------- 341015 September 2010. Summary of changes for version 20100915: 3411 34121) ACPI CA Core Subsystem: 3413 3414Removed the AcpiOsDerivePciId OSL interface. The various host 3415implementations 3416of this function were not OS-dependent and are now obsolete and can be 3417removed from all host OSLs. This function has been replaced by 3418AcpiHwDerivePciId, which is now part of the ACPICA core code. 3419AcpiHwDerivePciId has been implemented without recursion. Adds one new 3420module, hwpci.c. ACPICA BZ 857. 3421 3422Implemented a dynamic repair for _HID and _CID strings. The following 3423problems are now repaired at runtime: 1) Remove a leading asterisk in the 3424string, and 2) the entire string is uppercased. Both repairs are in 3425accordance with the ACPI specification and will simplify host driver 3426code. 3427ACPICA BZ 871. 3428 3429The ACPI_THREAD_ID type is no longer configurable, internally it is now 3430always UINT64. This simplifies the ACPICA code, especially any printf 3431output. 3432UINT64 is the only common data type for all thread_id types across all 3433operating systems. It is now up to the host OSL to cast the native 3434thread_id 3435type to UINT64 before returning the value to ACPICA (via 3436AcpiOsGetThreadId). 3437Lin Ming, Bob Moore. 3438 3439Added the ACPI_INLINE type to enhance the ACPICA configuration. The 3440"inline" 3441keyword is not standard across compilers, and this type allows inline to 3442be 3443configured on a per-compiler basis. Lin Ming. 3444 3445Made the system global AcpiGbl_SystemAwakeAndRunning publically 3446available. 3447Added an extern for this boolean in acpixf.h. Some hosts utilize this 3448value 3449during suspend/restore operations. ACPICA BZ 869. 3450 3451All code that implements error/warning messages with the "ACPI:" prefix 3452has 3453been moved to a new module, utxferror.c. 3454 3455The UINT64_OVERLAY was moved to utmath.c, which is the only module where 3456it 3457is used. ACPICA BZ 829. Lin Ming, Bob Moore. 3458 3459Example Code and Data Size: These are the sizes for the OS-independent 3460acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3461debug version of the code includes the debug output trace mechanism and 3462has a 3463much larger code and data size. 3464 3465 Previous Release: 3466 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 3467 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 3468 Current Release: 3469 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 3470 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 3471 34722) iASL Compiler/Disassembler and Tools: 3473 3474iASL/Disassembler: Write ACPI errors to stderr instead of the output 3475file. 3476This keeps the output files free of random error messages that may 3477originate 3478from within the namespace/interpreter code. Used this opportunity to 3479merge 3480all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 3481866. Lin Ming, Bob Moore. 3482 3483Tools: update some printfs for ansi warnings on size_t. Handle width 3484change 3485of size_t on 32-bit versus 64-bit generations. Lin Ming. 3486 3487---------------------------------------- 348806 August 2010. Summary of changes for version 20100806: 3489 34901) ACPI CA Core Subsystem: 3491 3492Designed and implemented a new host interface to the _OSI support code. 3493This 3494will allow the host to dynamically add or remove multiple _OSI strings, 3495as 3496well as install an optional handler that is called for each _OSI 3497invocation. 3498Also added a new AML debugger command, 'osi' to display and modify the 3499global 3500_OSI string table, and test support in the AcpiExec utility. See the 3501ACPICA 3502reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 3503New Functions: 3504 AcpiInstallInterface - Add an _OSI string. 3505 AcpiRemoveInterface - Delete an _OSI string. 3506 AcpiInstallInterfaceHandler - Install optional _OSI handler. 3507Obsolete Functions: 3508 AcpiOsValidateInterface - no longer used. 3509New Files: 3510 source/components/utilities/utosi.c 3511 3512Re-introduced the support to enable multi-byte transfers for Embedded 3513Controller (EC) operation regions. A reported problem was found to be a 3514bug 3515in the host OS, not in the multi-byte support. Previously, the maximum 3516data 3517size passed to the EC operation region handler was a single byte. There 3518are 3519often EC Fields larger than one byte that need to be transferred, and it 3520is 3521useful for the EC driver to lock these as a single transaction. This 3522change 3523enables single transfers larger than 8 bits. This effectively changes the 3524access to the EC space from ByteAcc to AnyAcc, and will probably require 3525changes to the host OS Embedded Controller driver to enable 16/32/64/256- 3526bit 3527transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 3528 3529Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 3530prototype in acpiosxf.h had the output value pointer as a (void *). 3531It should be a (UINT64 *). This may affect some host OSL code. 3532 3533Fixed a couple problems with the recently modified Linux makefiles for 3534iASL 3535and AcpiExec. These new makefiles place the generated object files in the 3536local directory so that there can be no collisions between the files that 3537are 3538shared between them that are compiled with different options. 3539 3540Example Code and Data Size: These are the sizes for the OS-independent 3541acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3542debug version of the code includes the debug output trace mechanism and 3543has a 3544much larger code and data size. 3545 3546 Previous Release: 3547 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 3548 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 3549 Current Release: 3550 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 3551 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 3552 35532) iASL Compiler/Disassembler and Tools: 3554 3555iASL/Disassembler: Added a new option (-da, "disassemble all") to load 3556the 3557namespace from and disassemble an entire group of AML files. Useful for 3558loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 3559and 3560disassembling with one simple command. ACPICA BZ 865. Lin Ming. 3561 3562iASL: Allow multiple invocations of -e option. This change allows 3563multiple 3564uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 3565834. 3566Lin Ming. 3567 3568---------------------------------------- 356902 July 2010. Summary of changes for version 20100702: 3570 35711) ACPI CA Core Subsystem: 3572 3573Implemented several updates to the recently added GPE reference count 3574support. The model for "wake" GPEs is changing to give the host OS 3575complete 3576control of these GPEs. Eventually, the ACPICA core will not execute any 3577_PRW 3578methods, since the host already must execute them. Also, additional 3579changes 3580were made to help ensure that the reference counts are kept in proper 3581synchronization with reality. Rafael J. Wysocki. 3582 35831) Ensure that GPEs are not enabled twice during initialization. 35842) Ensure that GPE enable masks stay in sync with the reference count. 35853) Do not inadvertently enable GPEs when writing GPE registers. 35864) Remove the internal wake reference counter and add new AcpiGpeWakeup 3587interface. This interface will set or clear individual GPEs for wakeup. 35885) Remove GpeType argument from AcpiEnable and AcpiDisable. These 3589interfaces 3590are now used for "runtime" GPEs only. 3591 3592Changed the behavior of the GPE install/remove handler interfaces. The 3593GPE 3594is 3595no longer disabled during this process, as it was found to cause problems 3596on 3597some machines. Rafael J. Wysocki. 3598 3599Reverted a change introduced in version 20100528 to enable Embedded 3600Controller multi-byte transfers. This change was found to cause problems 3601with 3602Index Fields and possibly Bank Fields. It will be reintroduced when these 3603problems have been resolved. 3604 3605Fixed a problem with references to Alias objects within Package Objects. 3606A 3607reference to an Alias within the definition of a Package was not always 3608resolved properly. Aliases to objects like Processors, Thermal zones, 3609etc. 3610were resolved to the actual object instead of a reference to the object 3611as 3612it 3613should be. Package objects are only allowed to contain integer, string, 3614buffer, package, and reference objects. Redhat bugzilla 608648. 3615 3616Example Code and Data Size: These are the sizes for the OS-independent 3617acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3618debug version of the code includes the debug output trace mechanism and 3619has a 3620much larger code and data size. 3621 3622 Previous Release: 3623 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 3624 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 3625 Current Release: 3626 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 3627 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 3628 36292) iASL Compiler/Disassembler and Tools: 3630 3631iASL: Implemented a new compiler subsystem to allow definition and 3632compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 3633These 3634are called "ACPI Data Tables", and the new compiler is the "Data Table 3635Compiler". This compiler is intended to simplify the existing error-prone 3636process of creating these tables for the BIOS, as well as allowing the 3637disassembly, modification, recompilation, and override of existing ACPI 3638data 3639tables. See the iASL User Guide for detailed information. 3640 3641iASL: Implemented a new Template Generator option in support of the new 3642Data 3643Table Compiler. This option will create examples of all known ACPI tables 3644that can be used as the basis for table development. See the iASL 3645documentation and the -T option. 3646 3647Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 3648Descriptor Table). 3649 3650Updated the Linux makefiles for iASL and AcpiExec to place the generated 3651object files in the local directory so that there can be no collisions 3652between the shared files between them that are generated with different 3653options. 3654 3655Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 3656Use 3657the #define __APPLE__ to enable this support. 3658 3659---------------------------------------- 366028 May 2010. Summary of changes for version 20100528: 3661 3662Note: The ACPI 4.0a specification was released on April 5, 2010 and is 3663available at www.acpi.info. This is primarily an errata release. 3664 36651) ACPI CA Core Subsystem: 3666 3667Undefined ACPI tables: We are looking for the definitions for the 3668following 3669ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 3670 3671Implemented support to enable multi-byte transfers for Embedded 3672Controller 3673(EC) operation regions. Previously, the maximum data size passed to the 3674EC 3675operation region handler was a single byte. There are often EC Fields 3676larger 3677than one byte that need to be transferred, and it is useful for the EC 3678driver 3679to lock these as a single transaction. This change enables single 3680transfers 3681larger than 8 bits. This effectively changes the access to the EC space 3682from 3683ByteAcc to AnyAcc, and will probably require changes to the host OS 3684Embedded 3685Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 3686bit 3687transfers. Alexey Starikovskiy, Lin Ming 3688 3689Implemented a performance enhancement for namespace search and access. 3690This 3691change enhances the performance of namespace searches and walks by adding 3692a 3693backpointer to the parent in each namespace node. On large namespaces, 3694this 3695change can improve overall ACPI performance by up to 9X. Adding a pointer 3696to 3697each namespace node increases the overall size of the internal namespace 3698by 3699about 5%, since each namespace entry usually consists of both a namespace 3700node and an ACPI operand object. However, this is the first growth of the 3701namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 3702 3703Implemented a performance optimization that reduces the number of 3704namespace 3705walks. On control method exit, only walk the namespace if the method is 3706known 3707to have created namespace objects outside of its local scope. Previously, 3708the 3709entire namespace was traversed on each control method exit. This change 3710can 3711improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 3712Moore. 3713 3714Added support to truncate I/O addresses to 16 bits for Windows 3715compatibility. 3716Some ASL code has been seen in the field that inadvertently has bits set 3717above bit 15. This feature is optional and is enabled if the BIOS 3718requests 3719any Windows OSI strings. It can also be enabled by the host OS. Matthew 3720Garrett, Bob Moore. 3721 3722Added support to limit the maximum time for the ASL Sleep() operator. To 3723prevent accidental deep sleeps, limit the maximum time that Sleep() will 3724actually sleep. Configurable, the default maximum is two seconds. ACPICA 3725bugzilla 854. 3726 3727Added run-time validation support for the _WDG and_WED Microsoft 3728predefined 3729methods. These objects are defined by "Windows Instrumentation", and are 3730not 3731part of the ACPI spec. ACPICA BZ 860. 3732 3733Expanded all statistic counters used during namespace and device 3734initialization from 16 to 32 bits in order to support very large 3735namespaces. 3736 3737Replaced all instances of %d in printf format specifiers with %u since 3738nearly 3739all integers in ACPICA are unsigned. 3740 3741Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 3742returned 3743as AE_NO_HANDLER. 3744 3745Example Code and Data Size: These are the sizes for the OS-independent 3746acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3747debug version of the code includes the debug output trace mechanism and 3748has a 3749much larger code and data size. 3750 3751 Previous Release: 3752 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 3753 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 3754 Current Release: 3755 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 3756 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 3757 37582) iASL Compiler/Disassembler and Tools: 3759 3760iASL: Added compiler support for the _WDG and_WED Microsoft predefined 3761methods. These objects are defined by "Windows Instrumentation", and are 3762not 3763part of the ACPI spec. ACPICA BZ 860. 3764 3765AcpiExec: added option to disable the memory tracking mechanism. The -dt 3766option will disable the tracking mechanism, which improves performance 3767considerably. 3768 3769AcpiExec: Restructured the command line options into -d (disable) and -e 3770(enable) options. 3771 3772---------------------------------------- 377328 April 2010. Summary of changes for version 20100428: 3774 37751) ACPI CA Core Subsystem: 3776 3777Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 3778including FADT-based and GPE Block Devices, execute any _PRW methods in 3779the 3780new table, and process any _Lxx/_Exx GPE methods in the new table. Any 3781runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 3782immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 3783Devices. Provides compatibility with other ACPI implementations. Two new 3784files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 3785Moore. 3786 3787Fixed a regression introduced in version 20100331 within the table 3788manager 3789where initial table loading could fail. This was introduced in the fix 3790for 3791AcpiReallocateRootTable. Also, renamed some of fields in the table 3792manager 3793data structures to clarify their meaning and use. 3794 3795Fixed a possible allocation overrun during internal object copy in 3796AcpiUtCopySimpleObject. The original code did not correctly handle the 3797case 3798where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 3799847. 3800 3801Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 3802possible access beyond end-of-allocation. Also, now fully validate 3803descriptor 3804(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 3805 3806Example Code and Data Size: These are the sizes for the OS-independent 3807acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3808debug version of the code includes the debug output trace mechanism and 3809has a 3810much larger code and data size. 3811 3812 Previous Release: 3813 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 3814 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 3815 Current Release: 3816 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 3817 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 3818 38192) iASL Compiler/Disassembler and Tools: 3820 3821iASL: Implemented Min/Max/Len/Gran validation for address resource 3822descriptors. This change implements validation for the address fields 3823that 3824are common to all address-type resource descriptors. These checks are 3825implemented: Checks for valid Min/Max, length within the Min/Max window, 3826valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 3827per 3828table 6-40 in the ACPI 4.0a specification. Also split the large 3829aslrestype1.c 3830and aslrestype2.c files into five new files. ACPICA BZ 840. 3831 3832iASL: Added support for the _Wxx predefined names. This support was 3833missing 3834and these names were not recognized by the compiler as valid predefined 3835names. ACPICA BZ 851. 3836 3837iASL: Added an error for all predefined names that are defined to return 3838no 3839value and thus must be implemented as Control Methods. These include all 3840of 3841the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 3842names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 3843 3844iASL: Implemented the -ts option to emit hex AML data in ASL format, as 3845an 3846ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 3847be 3848dynamically loaded via the Load() operator. Also cleaned up output for 3849the 3850- 3851ta and -tc options. ACPICA BZ 853. 3852 3853Tests: Added a new file with examples of extended iASL error checking. 3854Demonstrates the advanced error checking ability of the iASL compiler. 3855Available at tests/misc/badcode.asl. 3856 3857---------------------------------------- 385831 March 2010. Summary of changes for version 20100331: 3859 38601) ACPI CA Core Subsystem: 3861 3862Completed a major update for the GPE support in order to improve support 3863for 3864shared GPEs and to simplify both host OS and ACPICA code. Added a 3865reference 3866count mechanism to support shared GPEs that require multiple device 3867drivers. 3868Several external interfaces have changed. One external interface has been 3869removed. One new external interface was added. Most of the GPE external 3870interfaces now use the GPE spinlock instead of the events mutex (and the 3871Flags parameter for many GPE interfaces has been removed.) See the 3872updated 3873ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 3874Rafael 3875Wysocki. ACPICA BZ 831. 3876 3877Changed: 3878 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 3879Removed: 3880 AcpiSetGpeType 3881New: 3882 AcpiSetGpe 3883 3884Implemented write support for DataTable operation regions. These regions 3885are 3886defined via the DataTableRegion() operator. Previously, only read support 3887was 3888implemented. The ACPI specification allows DataTableRegions to be 3889read/write, 3890however. 3891 3892Implemented a new subsystem option to force a copy of the DSDT to local 3893memory. Optionally copy the entire DSDT to local memory (instead of 3894simply 3895mapping it.) There are some (albeit very rare) BIOSs that corrupt or 3896replace 3897the original DSDT, creating the need for this option. Default is FALSE, 3898do 3899not copy the DSDT. 3900 3901Implemented detection of a corrupted or replaced DSDT. This change adds 3902support to detect a DSDT that has been corrupted and/or replaced from 3903outside 3904the OS (by firmware). This is typically catastrophic for the system, but 3905has 3906been seen on some machines. Once this problem has been detected, the DSDT 3907copy option can be enabled via system configuration. Lin Ming, Bob Moore. 3908 3909Fixed two problems with AcpiReallocateRootTable during the root table 3910copy. 3911When copying the root table to the new allocation, the length used was 3912incorrect. The new size was used instead of the current table size, 3913meaning 3914too much data was copied. Also, the count of available slots for ACPI 3915tables 3916was not set correctly. Alexey Starikovskiy, Bob Moore. 3917 3918Example Code and Data Size: These are the sizes for the OS-independent 3919acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3920debug version of the code includes the debug output trace mechanism and 3921has a 3922much larger code and data size. 3923 3924 Previous Release: 3925 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 3926 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 3927 Current Release: 3928 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 3929 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 3930 39312) iASL Compiler/Disassembler and Tools: 3932 3933iASL: Implement limited typechecking for values returned from predefined 3934control methods. The type of any returned static (unnamed) object is now 3935validated. For example, Return(1). ACPICA BZ 786. 3936 3937iASL: Fixed a predefined name object verification regression. Fixes a 3938problem 3939introduced in version 20100304. An error is incorrectly generated if a 3940predefined name is declared as a static named object with a value defined 3941using the keywords "Zero", "One", or "Ones". Lin Ming. 3942 3943iASL: Added Windows 7 support for the -g option (get local ACPI tables) 3944by 3945reducing the requested registry access rights. ACPICA BZ 842. 3946 3947Disassembler: fixed a possible fault when generating External() 3948statements. 3949Introduced in commit ae7d6fd: Properly handle externals with parent- 3950prefix 3951(carat). Fixes a string length allocation calculation. Lin Ming. 3952 3953---------------------------------------- 395404 March 2010. Summary of changes for version 20100304: 3955 39561) ACPI CA Core Subsystem: 3957 3958Fixed a possible problem with the AML Mutex handling function 3959AcpiExReleaseMutex where the function could fault under the very rare 3960condition when the interpreter has blocked, the interpreter lock is 3961released, 3962the interpreter is then reentered via the same thread, and attempts to 3963acquire an AML mutex that was previously acquired. FreeBSD report 140979. 3964Lin 3965Ming. 3966 3967Implemented additional configuration support for the AML "Debug Object". 3968Output from the debug object can now be enabled via a global variable, 3969AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 3970debugging. 3971This debug output is now available in the release version of ACPICA 3972instead 3973of just the debug version. Also, the entire debug output module can now 3974be 3975configured out of the ACPICA build if desired. One new file added, 3976executer/exdebug.c. Lin Ming, Bob Moore. 3977 3978Added header support for the ACPI MCHI table (Management Controller Host 3979Interface Table). This table was added in ACPI 4.0, but the defining 3980document 3981has only recently become available. 3982 3983Standardized output of integer values for ACPICA warnings/errors. Always 3984use 39850x prefix for hex output, always use %u for unsigned integer decimal 3986output. 3987Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 3988400 3989invocations.) These invocations were converted from the original 3990ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 3991 3992Example Code and Data Size: These are the sizes for the OS-independent 3993acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3994debug version of the code includes the debug output trace mechanism and 3995has a 3996much larger code and data size. 3997 3998 Previous Release: 3999 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4000 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4001 Current Release: 4002 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 4003 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 4004 40052) iASL Compiler/Disassembler and Tools: 4006 4007iASL: Implemented typechecking support for static (non-control method) 4008predefined named objects that are declared with the Name() operator. For 4009example, the type of this object is now validated to be of type Integer: 4010Name(_BBN, 1). This change migrates the compiler to using the core 4011predefined 4012name table instead of maintaining a local version. Added a new file, 4013aslpredef.c. ACPICA BZ 832. 4014 4015Disassembler: Added support for the ACPI 4.0 MCHI table. 4016 4017---------------------------------------- 401821 January 2010. Summary of changes for version 20100121: 4019 40201) ACPI CA Core Subsystem: 4021 4022Added the 2010 copyright to all module headers and signons. This affects 4023virtually every file in the ACPICA core subsystem, the iASL compiler, the 4024tools/utilities, and the test suites. 4025 4026Implemented a change to the AcpiGetDevices interface to eliminate 4027unnecessary 4028invocations of the _STA method. In the case where a specific _HID is 4029requested, do not run _STA until a _HID match is found. This eliminates 4030potentially dozens of _STA calls during a search for a particular 4031device/HID, 4032which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 4033 4034Implemented an additional repair for predefined method return values. 4035Attempt 4036to repair unexpected NULL elements within returned Package objects. 4037Create 4038an 4039Integer of value zero, a NULL String, or a zero-length Buffer as 4040appropriate. 4041ACPICA BZ 818. Lin Ming, Bob Moore. 4042 4043Removed the obsolete ACPI_INTEGER data type. This type was introduced as 4044the 4045code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 4046(with 404764-bit AML integers). It is now obsolete and this change removes it from 4048the 4049ACPICA code base, replaced by UINT64. The original typedef has been 4050retained 4051for now for compatibility with existing device driver code. ACPICA BZ 4052824. 4053 4054Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 4055in 4056the parse tree object. 4057 4058Added additional warning options for the gcc-4 generation. Updated the 4059source 4060accordingly. This includes some code restructuring to eliminate 4061unreachable 4062code, elimination of some gotos, elimination of unused return values, 4063some 4064additional casting, and removal of redundant declarations. 4065 4066Example Code and Data Size: These are the sizes for the OS-independent 4067acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4068debug version of the code includes the debug output trace mechanism and 4069has a 4070much larger code and data size. 4071 4072 Previous Release: 4073 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4074 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4075 Current Release: 4076 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 4077 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 4078 40792) iASL Compiler/Disassembler and Tools: 4080 4081No functional changes for this release. 4082 4083---------------------------------------- 408414 December 2009. Summary of changes for version 20091214: 4085 40861) ACPI CA Core Subsystem: 4087 4088Enhanced automatic data type conversions for predefined name repairs. 4089This 4090change expands the automatic repairs/conversions for predefined name 4091return 4092values to make Integers, Strings, and Buffers fully interchangeable. 4093Also, 4094a 4095Buffer can be converted to a Package of Integers if necessary. The 4096nsrepair.c 4097module was completely restructured. Lin Ming, Bob Moore. 4098 4099Implemented automatic removal of null package elements during predefined 4100name 4101repairs. This change will automatically remove embedded and trailing NULL 4102package elements from returned package objects that are defined to 4103contain 4104a 4105variable number of sub-packages. The driver is then presented with a 4106package 4107with no null elements to deal with. ACPICA BZ 819. 4108 4109Implemented a repair for the predefined _FDE and _GTM names. The expected 4110return value for both names is a Buffer of 5 DWORDs. This repair fixes 4111two 4112possible problems (both seen in the field), where a package of integers 4113is 4114returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 4115Kim. 4116 4117Implemented additional module-level code support. This change will 4118properly 4119execute module-level code that is not at the root of the namespace (under 4120a 4121Device object, etc.). Now executes the code within the current scope 4122instead 4123of the root. ACPICA BZ 762. Lin Ming. 4124 4125Fixed possible mutex acquisition errors when running _REG methods. Fixes 4126a 4127problem where mutex errors can occur when running a _REG method that is 4128in 4129the same scope as a method-defined operation region or an operation 4130region 4131under a module-level IF block. This type of code is rare, so the problem 4132has 4133not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 4134 4135Fixed a possible memory leak during module-level code execution. An 4136object 4137could be leaked for each block of executed module-level code if the 4138interpreter slack mode is enabled This change deletes any implicitly 4139returned 4140object from the module-level code block. Lin Ming. 4141 4142Removed messages for successful predefined repair(s). The repair 4143mechanism 4144was considered too wordy. Now, messages are only unconditionally emitted 4145if 4146the return object cannot be repaired. Existing messages for successful 4147repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 4148827. 4149 4150Example Code and Data Size: These are the sizes for the OS-independent 4151acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4152debug version of the code includes the debug output trace mechanism and 4153has a 4154much larger code and data size. 4155 4156 Previous Release: 4157 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4158 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4159 Current Release: 4160 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 4161 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 4162 41632) iASL Compiler/Disassembler and Tools: 4164 4165iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 4166files 4167were no longer automatically removed at the termination of the compile. 4168 4169acpiexec: Implemented the -f option to specify default region fill value. 4170This option specifies the value used to initialize buffers that simulate 4171operation regions. Default value is zero. Useful for debugging problems 4172that 4173depend on a specific initial value for a region or field. 4174 4175---------------------------------------- 417612 November 2009. Summary of changes for version 20091112: 4177 41781) ACPI CA Core Subsystem: 4179 4180Implemented a post-order callback to AcpiWalkNamespace. The existing 4181interface only has a pre-order callback. This change adds an additional 4182parameter for a post-order callback which will be more useful for bus 4183scans. 4184ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 4185 4186Modified the behavior of the operation region memory mapping cache for 4187SystemMemory. Ensure that the memory mappings created for operation 4188regions 4189do not cross 4K page boundaries. Crossing a page boundary while mapping 4190regions can cause kernel warnings on some hosts if the pages have 4191different 4192attributes. Such regions are probably BIOS bugs, and this is the 4193workaround. 4194Linux BZ 14445. Lin Ming. 4195 4196Implemented an automatic repair for predefined methods that must return 4197sorted lists. This change will repair (by sorting) packages returned by 4198_ALR, 4199_PSS, and _TSS. Drivers can now assume that the packages are correctly 4200sorted 4201and do not contain NULL package elements. Adds one new file, 4202namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 4203 4204Fixed a possible fault during predefined name validation if a return 4205Package 4206object contains NULL elements. Also adds a warning if a NULL element is 4207followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 4208may 4209include repair or removal of all such NULL elements where possible. 4210 4211Implemented additional module-level executable AML code support. This 4212change 4213will execute module-level code that is not at the root of the namespace 4214(under a Device object, etc.) at table load time. Module-level executable 4215AML 4216code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 4217 4218Implemented a new internal function to create Integer objects. This 4219function 4220simplifies miscellaneous object creation code. ACPICA BZ 823. 4221 4222Reduced the severity of predefined repair messages, Warning to Info. 4223Since 4224the object was successfully repaired, a warning is too severe. Reduced to 4225an 4226info message for now. These messages may eventually be changed to debug- 4227only. 4228ACPICA BZ 812. 4229 4230Example Code and Data Size: These are the sizes for the OS-independent 4231acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4232debug version of the code includes the debug output trace mechanism and 4233has a 4234much larger code and data size. 4235 4236 Previous Release: 4237 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 4238 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 4239 Current Release: 4240 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 4241 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 4242 42432) iASL Compiler/Disassembler and Tools: 4244 4245iASL: Implemented Switch() with While(1) so that Break works correctly. 4246This 4247change correctly implements the Switch operator with a surrounding 4248While(1) 4249so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 4250 4251iASL: Added a message if a package initializer list is shorter than 4252package 4253length. Adds a new remark for a Package() declaration if an initializer 4254list 4255exists, but is shorter than the declared length of the package. Although 4256technically legal, this is probably a coding error and it is seen in the 4257field. ACPICA BZ 815. Lin Ming, Bob Moore. 4258 4259iASL: Fixed a problem where the compiler could fault after the maximum 4260number 4261of errors was reached (200). 4262 4263acpixtract: Fixed a possible warning for pointer cast if the compiler 4264warning 4265level set very high. 4266 4267---------------------------------------- 426813 October 2009. Summary of changes for version 20091013: 4269 42701) ACPI CA Core Subsystem: 4271 4272Fixed a problem where an Operation Region _REG method could be executed 4273more 4274than once. If a custom address space handler is installed by the host 4275before 4276the "initialize operation regions" phase of the ACPICA initialization, 4277any 4278_REG methods for that address space could be executed twice. This change 4279fixes the problem. ACPICA BZ 427. Lin Ming. 4280 4281Fixed a possible memory leak for the Scope() ASL operator. When the exact 4282invocation of "Scope(\)" is executed (change scope to root), one internal 4283operand object was leaked. Lin Ming. 4284 4285Implemented a run-time repair for the _MAT predefined method. If the _MAT 4286return value is defined as a Field object in the AML, and the field 4287size is less than or equal to the default width of an integer (32 or 428864),_MAT 4289can incorrectly return an Integer instead of a Buffer. ACPICA now 4290automatically repairs this problem. ACPICA BZ 810. 4291 4292Implemented a run-time repair for the _BIF and _BIX predefined methods. 4293The 4294"OEM Information" field is often incorrectly returned as an Integer with 4295value zero if the field is not supported by the platform. This is due to 4296an 4297ambiguity in the ACPI specification. The field should always be a string. 4298ACPICA now automatically repairs this problem by returning a NULL string 4299within the returned Package. ACPICA BZ 807. 4300 4301Example Code and Data Size: These are the sizes for the OS-independent 4302acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4303debug version of the code includes the debug output trace mechanism and 4304has a 4305much larger code and data size. 4306 4307 Previous Release: 4308 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 4309 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 4310 Current Release: 4311 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 4312 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 4313 43142) iASL Compiler/Disassembler and Tools: 4315 4316Disassembler: Fixed a problem where references to external symbols that 4317contained one or more parent-prefixes (carats) were not handled 4318correctly, 4319possibly causing a fault. ACPICA BZ 806. Lin Ming. 4320 4321Disassembler: Restructured the code so that all functions that handle 4322external symbols are in a single module. One new file is added, 4323common/dmextern.c. 4324 4325AML Debugger: Added a max count argument for the Batch command (which 4326executes multiple predefined methods within the namespace.) 4327 4328iASL: Updated the compiler documentation (User Reference.) Available at 4329http://www.acpica.org/documentation/. ACPICA BZ 750. 4330 4331AcpiXtract: Updated for Lint and other formatting changes. Close all open 4332files. 4333 4334---------------------------------------- 433503 September 2009. Summary of changes for version 20090903: 4336 43371) ACPI CA Core Subsystem: 4338 4339For Windows Vista compatibility, added the automatic execution of an _INI 4340method located at the namespace root (\_INI). This method is executed at 4341table load time. This support is in addition to the automatic execution 4342of 4343\_SB._INI. Lin Ming. 4344 4345Fixed a possible memory leak in the interpreter for AML package objects 4346if 4347the package initializer list is longer than the defined size of the 4348package. 4349This apparently can only happen if the BIOS changes the package size on 4350the 4351fly (seen in a _PSS object), as ASL compilers do not allow this. The 4352interpreter will truncate the package to the defined size (and issue an 4353error 4354message), but previously could leave the extra objects undeleted if they 4355were 4356pre-created during the argument processing (such is the case if the 4357package 4358consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 4359 4360Fixed a problem seen when a Buffer or String is stored to itself via ASL. 4361This has been reported in the field. Previously, ACPICA would zero out 4362the 4363buffer/string. Now, the operation is treated as a noop. Provides Windows 4364compatibility. ACPICA BZ 803. Lin Ming. 4365 4366Removed an extraneous error message for ASL constructs of the form 4367Store(LocalX,LocalX) when LocalX is uninitialized. These curious 4368statements 4369are seen in many BIOSs and are once again treated as NOOPs and no error 4370is 4371emitted when they are encountered. ACPICA BZ 785. 4372 4373Fixed an extraneous warning message if a _DSM reserved method returns a 4374Package object. _DSM can return any type of object, so validation on the 4375return type cannot be performed. ACPICA BZ 802. 4376 4377Example Code and Data Size: These are the sizes for the OS-independent 4378acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4379debug version of the code includes the debug output trace mechanism and 4380has a 4381much larger code and data size. 4382 4383 Previous Release: 4384 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 4385 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 4386 Current Release: 4387 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 4388 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 4389 43902) iASL Compiler/Disassembler and Tools: 4391 4392iASL: Fixed a problem with the use of the Alias operator and Resource 4393Templates. The correct alias is now constructed and no error is emitted. 4394ACPICA BZ 738. 4395 4396iASL: Implemented the -I option to specify additional search directories 4397for 4398include files. Allows multiple additional search paths for include files. 4399Directories are searched in the order specified on the command line 4400(after 4401the local directory is searched.) ACPICA BZ 800. 4402 4403iASL: Fixed a problem where the full pathname for include files was not 4404emitted for warnings/errors. This caused the IDE support to not work 4405properly. ACPICA BZ 765. 4406 4407iASL: Implemented the -@ option to specify a Windows-style response file 4408containing additional command line options. ACPICA BZ 801. 4409 4410AcpiExec: Added support to load multiple AML files simultaneously (such 4411as 4412a 4413DSDT and multiple SSDTs). Also added support for wildcards within the AML 4414pathname. These features allow all machine tables to be easily loaded and 4415debugged together. ACPICA BZ 804. 4416 4417Disassembler: Added missing support for disassembly of HEST table Error 4418Bank 4419subtables. 4420 4421---------------------------------------- 442230 July 2009. Summary of changes for version 20090730: 4423 4424The ACPI 4.0 implementation for ACPICA is complete with this release. 4425 44261) ACPI CA Core Subsystem: 4427 4428ACPI 4.0: Added header file support for all new and changed ACPI tables. 4429Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 4430new 4431for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 4432BERT, 4433EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 4434There 4435have been some ACPI 4.0 changes to other existing tables. Split the large 4436actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 4437 4438ACPI 4.0: Implemented predefined name validation for all new names. There 4439are 444031 new names in ACPI 4.0. The predefined validation module was split into 4441two 4442files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 4443 4444Implemented support for so-called "module-level executable code". This is 4445executable AML code that exists outside of any control method and is 4446intended 4447to be executed at table load time. Although illegal since ACPI 2.0, this 4448type 4449of code still exists and is apparently still being created. Blocks of 4450this 4451code are now detected and executed as intended. Currently, the code 4452blocks 4453must exist under either an If, Else, or While construct; these are the 4454typical cases seen in the field. ACPICA BZ 762. Lin Ming. 4455 4456Implemented an automatic dynamic repair for predefined names that return 4457nested Package objects. This applies to predefined names that are defined 4458to 4459return a variable-length Package of sub-packages. If the number of sub- 4460packages is one, BIOS code is occasionally seen that creates a simple 4461single 4462package with no sub-packages. This code attempts to fix the problem by 4463wrapping a new package object around the existing package. These methods 4464can 4465be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 4466BZ 4467790. 4468 4469Fixed a regression introduced in 20090625 for the AcpiGetDevices 4470interface. 4471The _HID/_CID matching was broken and no longer matched IDs correctly. 4472ACPICA 4473BZ 793. 4474 4475Fixed a problem with AcpiReset where the reset would silently fail if the 4476register was one of the protected I/O ports. AcpiReset now bypasses the 4477port 4478validation mechanism. This may eventually be driven into the 4479AcpiRead/Write 4480interfaces. 4481 4482Fixed a regression related to the recent update of the AcpiRead/Write 4483interfaces. A sleep/suspend could fail if the optional PM2 Control 4484register 4485does not exist during an attempt to write the Bus Master Arbitration bit. 4486(However, some hosts already delete the code that writes this bit, and 4487the 4488code may in fact be obsolete at this date.) ACPICA BZ 799. 4489 4490Fixed a problem where AcpiTerminate could fault if inadvertently called 4491twice 4492in succession. ACPICA BZ 795. 4493 4494Example Code and Data Size: These are the sizes for the OS-independent 4495acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4496debug version of the code includes the debug output trace mechanism and 4497has a 4498much larger code and data size. 4499 4500 Previous Release: 4501 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 4502 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 4503 Current Release: 4504 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 4505 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 4506 45072) iASL Compiler/Disassembler and Tools: 4508 4509ACPI 4.0: Implemented disassembler support for all new ACPI tables and 4510changes to existing tables. ACPICA BZ 775. 4511 4512---------------------------------------- 451325 June 2009. Summary of changes for version 20090625: 4514 4515The ACPI 4.0 Specification was released on June 16 and is available at 4516www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 4517continue for the next few releases. 4518 45191) ACPI CA Core Subsystem: 4520 4521ACPI 4.0: Implemented interpreter support for the IPMI operation region 4522address space. Includes support for bi-directional data buffers and an 4523IPMI 4524address space handler (to be installed by an IPMI device driver.) ACPICA 4525BZ 4526773. Lin Ming. 4527 4528ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 4529Includes 4530support in both the header files and the disassembler. 4531 4532Completed a major update for the AcpiGetObjectInfo external interface. 4533Changes include: 4534 - Support for variable, unlimited length HID, UID, and CID strings. 4535 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 4536etc.) 4537 - Call the _SxW power methods on behalf of a device object. 4538 - Determine if a device is a PCI root bridge. 4539 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 4540These changes will require an update to all callers of this interface. 4541See 4542the updated ACPICA Programmer Reference for details. One new source file 4543has 4544been added - utilities/utids.c. ACPICA BZ 368, 780. 4545 4546Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 4547transfers. The Value parameter has been extended from 32 bits to 64 bits 4548in 4549order to support new ACPI 4.0 tables. These changes will require an 4550update 4551to 4552all callers of these interfaces. See the ACPICA Programmer Reference for 4553details. ACPICA BZ 768. 4554 4555Fixed several problems with AcpiAttachData. The handler was not invoked 4556when 4557the host node was deleted. The data sub-object was not automatically 4558deleted 4559when the host node was deleted. The interface to the handler had an 4560unused 4561parameter, this was removed. ACPICA BZ 778. 4562 4563Enhanced the function that dumps ACPI table headers. All non-printable 4564characters in the string fields are now replaced with '?' (Signature, 4565OemId, 4566OemTableId, and CompilerId.) ACPI tables with non-printable characters in 4567these fields are occasionally seen in the field. ACPICA BZ 788. 4568 4569Fixed a problem with predefined method repair code where the code that 4570attempts to repair/convert an object of incorrect type is only executed 4571on 4572the first time the predefined method is called. The mechanism that 4573disables 4574warnings on subsequent calls was interfering with the repair mechanism. 4575ACPICA BZ 781. 4576 4577Fixed a possible memory leak in the predefined validation/repair code 4578when 4579a 4580buffer is automatically converted to an expected string object. 4581 4582Removed obsolete 16-bit files from the distribution and from the current 4583git 4584tree head. ACPICA BZ 776. 4585 4586Example Code and Data Size: These are the sizes for the OS-independent 4587acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4588debug version of the code includes the debug output trace mechanism and 4589has a 4590much larger code and data size. 4591 4592 Previous Release: 4593 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 4594 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 4595 Current Release: 4596 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 4597 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 4598 45992) iASL Compiler/Disassembler and Tools: 4600 4601ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 4602operation region keyword. ACPICA BZ 771, 772. Lin Ming. 4603 4604ACPI 4.0: iASL - implemented compile-time validation support for all new 4605predefined names and control methods (31 total). ACPICA BZ 769. 4606 4607---------------------------------------- 460821 May 2009. Summary of changes for version 20090521: 4609 46101) ACPI CA Core Subsystem: 4611 4612Disabled the preservation of the SCI enable bit in the PM1 control 4613register. 4614The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 4615to 4616be 4617a "preserved" bit - "OSPM always preserves this bit position", section 46184.7.3.2.1. However, some machines fail if this bit is in fact preserved 4619because the bit needs to be explicitly set by the OS as a workaround. No 4620machines fail if the bit is not preserved. Therefore, ACPICA no longer 4621attempts to preserve this bit. 4622 4623Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 4624incorrectly formed _PRT package could cause a fault. Added validation to 4625ensure that each package element is actually a sub-package. 4626 4627Implemented a new interface to install or override a single control 4628method, 4629AcpiInstallMethod. This interface is useful when debugging in order to 4630repair 4631an existing method or to install a missing method without having to 4632override 4633the entire ACPI table. See the ACPICA Programmer Reference for use and 4634examples. Lin Ming, Bob Moore. 4635 4636Fixed several reference count issues with the DdbHandle object that is 4637created from a Load or LoadTable operator. Prevent premature deletion of 4638the 4639object. Also, mark the object as invalid once the table has been 4640unloaded. 4641This is needed because the handle itself may not be deleted after the 4642table 4643unload, depending on whether it has been stored in a named object by the 4644caller. Lin Ming. 4645 4646Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 4647mutexes of the same sync level are acquired but then not released in 4648strict 4649opposite order, the internally maintained Current Sync Level becomes 4650confused 4651and can cause subsequent execution errors. ACPICA BZ 471. 4652 4653Changed the allowable release order for ASL mutex objects. The ACPI 4.0 4654specification has been changed to make the SyncLevel for mutex objects 4655more 4656useful. When releasing a mutex, the SyncLevel of the mutex must now be 4657the 4658same as the current sync level. This makes more sense than the previous 4659rule 4660(SyncLevel less than or equal). This change updates the code to match the 4661specification. 4662 4663Fixed a problem with the local version of the AcpiOsPurgeCache function. 4664The 4665(local) cache must be locked during all cache object deletions. Andrew 4666Baumann. 4667 4668Updated the Load operator to use operation region interfaces. This 4669replaces 4670direct memory mapping with region access calls. Now, all region accesses 4671go 4672through the installed region handler as they should. 4673 4674Simplified and optimized the NsGetNextNode function. Reduced parameter 4675count 4676and reduced code for this frequently used function. 4677 4678Example Code and Data Size: These are the sizes for the OS-independent 4679acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4680debug version of the code includes the debug output trace mechanism and 4681has a 4682much larger code and data size. 4683 4684 Previous Release: 4685 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 4686 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 4687 Current Release: 4688 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 4689 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 4690 46912) iASL Compiler/Disassembler and Tools: 4692 4693Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 4694problems 4695with sub-table disassembly and handling invalid sub-tables. Attempt 4696recovery 4697after an invalid sub-table ID. 4698 4699---------------------------------------- 470022 April 2009. Summary of changes for version 20090422: 4701 47021) ACPI CA Core Subsystem: 4703 4704Fixed a compatibility issue with the recently released I/O port 4705protection 4706mechanism. For windows compatibility, 1) On a port protection violation, 4707simply ignore the request and do not return an exception (allow the 4708control 4709method to continue execution.) 2) If only part of the request overlaps a 4710protected port, read/write the individual ports that are not protected. 4711Linux 4712BZ 13036. Lin Ming 4713 4714Enhanced the execution of the ASL/AML BreakPoint operator so that it 4715actually 4716breaks into the AML debugger if the debugger is present. This matches the 4717ACPI-defined behavior. 4718 4719Fixed several possible warnings related to the use of the configurable 4720ACPI_THREAD_ID. This type can now be configured as either an integer or a 4721pointer with no warnings. Also fixes several warnings in printf-like 4722statements for the 64-bit build when the type is configured as a pointer. 4723ACPICA BZ 766, 767. 4724 4725Fixed a number of possible warnings when compiling with gcc 4+ (depending 4726on 4727warning options.) Examples include printf formats, aliasing, unused 4728globals, 4729missing prototypes, missing switch default statements, use of non-ANSI 4730library functions, use of non-ANSI constructs. See generate/unix/Makefile 4731for 4732a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 4733 4734Example Code and Data Size: These are the sizes for the OS-independent 4735acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4736debug version of the code includes the debug output trace mechanism and 4737has a 4738much larger code and data size. 4739 4740 Previous Release: 4741 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 4742 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 4743 Current Release: 4744 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 4745 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 4746 47472) iASL Compiler/Disassembler and Tools: 4748 4749iASL: Fixed a generation warning from Bison 2.3 and fixed several 4750warnings 4751on 4752the 64-bit build. 4753 4754iASL: Fixed a problem where the Unix/Linux versions of the compiler could 4755not 4756correctly digest Windows/DOS formatted files (with CR/LF). 4757 4758iASL: Added a new option for "quiet mode" (-va) that produces only the 4759compilation summary, not individual errors and warnings. Useful for large 4760batch compilations. 4761 4762AcpiExec: Implemented a new option (-z) to enable a forced 4763semaphore/mutex 4764timeout that can be used to detect hang conditions during execution of 4765AML 4766code (includes both internal semaphores and AML-defined mutexes and 4767events.) 4768 4769Added new makefiles for the generation of acpica in a generic unix-like 4770environment. These makefiles are intended to generate the acpica tools 4771and 4772utilities from the original acpica git source tree structure. 4773 4774Test Suites: Updated and cleaned up the documentation files. Updated the 4775copyrights to 2009, affecting all source files. Use the new version of 4776iASL 4777with quiet mode. Increased the number of available semaphores in the 4778Windows 4779OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 4780added 4781an alternate implementation of the semaphore timeout to allow aslts to 4782execute fully on Cygwin. 4783 4784---------------------------------------- 478520 March 2009. Summary of changes for version 20090320: 4786 47871) ACPI CA Core Subsystem: 4788 4789Fixed a possible race condition between AcpiWalkNamespace and dynamic 4790table 4791unloads. Added a reader/writer locking mechanism to allow multiple 4792concurrent 4793namespace walks (readers), but block a dynamic table unload until it can 4794gain 4795exclusive write access to the namespace. This fixes a problem where a 4796table 4797unload could (possibly catastrophically) delete the portion of the 4798namespace 4799that is currently being examined by a walk. Adds a new file, utlock.c, 4800that 4801implements the reader/writer lock mechanism. ACPICA BZ 749. 4802 4803Fixed a regression introduced in version 20090220 where a change to the 4804FADT 4805handling could cause the ACPICA subsystem to access non-existent I/O 4806ports. 4807 4808Modified the handling of FADT register and table (FACS/DSDT) addresses. 4809The 4810FADT can contain both 32-bit and 64-bit versions of these addresses. 4811Previously, the 64-bit versions were favored, meaning that if both 32 and 481264 4813versions were valid, but not equal, the 64-bit version was used. This was 4814found to cause some machines to fail. Now, in this case, the 32-bit 4815version 4816is used instead. This now matches the Windows behavior. 4817 4818Implemented a new mechanism to protect certain I/O ports. Provides 4819Microsoft 4820compatibility and protects the standard PC I/O ports from access via AML 4821code. Adds a new file, hwvalid.c 4822 4823Fixed a possible extraneous warning message from the FADT support. The 4824message warns of a 32/64 length mismatch between the legacy and GAS 4825definitions for a register. 4826 4827Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 4828is 4829made obsolete by the port protection mechanism above. It was previously 4830used 4831to validate the entire address range of an operation region, which could 4832be 4833incorrect if the range included illegal ports, but fields within the 4834operation region did not actually access those ports. Validation is now 4835performed on a per-field basis instead of the entire region. 4836 4837Modified the handling of the PM1 Status Register ignored bit (bit 11.) 4838Ignored bits must be "preserved" according to the ACPI spec. Usually, 4839this 4840means a read/modify/write when writing to the register. However, for 4841status 4842registers, writing a one means clear the event. Writing a zero means 4843preserve 4844the event (do not clear.) This behavior is clarified in the ACPI 4.0 4845spec, 4846and the ACPICA code now simply always writes a zero to the ignored bit. 4847 4848Modified the handling of ignored bits for the PM1 A/B Control Registers. 4849As 4850per the ACPI specification, for the control registers, preserve 4851(read/modify/write) all bits that are defined as either reserved or 4852ignored. 4853 4854Updated the handling of write-only bits in the PM1 A/B Control Registers. 4855When reading the register, zero the write-only bits as per the ACPI spec. 4856ACPICA BZ 443. Lin Ming. 4857 4858Removed "Linux" from the list of supported _OSI strings. Linux no longer 4859wants to reply true to this request. The Windows strings are the only 4860paths 4861through the AML that are tested and known to work properly. 4862 4863 Previous Release: 4864 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 4865 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 4866 Current Release: 4867 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 4868 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 4869 48702) iASL Compiler/Disassembler and Tools: 4871 4872Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 4873and 4874aetables.c 4875 4876---------------------------------------- 487720 February 2009. Summary of changes for version 20090220: 4878 48791) ACPI CA Core Subsystem: 4880 4881Optimized the ACPI register locking. Removed locking for reads from the 4882ACPI 4883bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 4884is 4885not required when reading the single-bit registers. The 4886AcpiGetRegisterUnlocked function is no longer needed and has been 4887removed. 4888This will improve performance for reads on these registers. ACPICA BZ 4889760. 4890 4891Fixed the parameter validation for AcpiRead/Write. Now return 4892AE_BAD_PARAMETER if the input register pointer is null, and 4893AE_BAD_ADDRESS 4894if 4895the register has an address of zero. Previously, these cases simply 4896returned 4897AE_OK. For optional registers such as PM1B status/enable/control, the 4898caller 4899should check for a valid register address before calling. ACPICA BZ 748. 4900 4901Renamed the external ACPI bit register access functions. Renamed 4902AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 4903functions. The new names are AcpiReadBitRegister and 4904AcpiWriteBitRegister. 4905Also, restructured the code for these functions by simplifying the code 4906path 4907and condensing duplicate code to reduce code size. 4908 4909Added new functions to transparently handle the possibly split PM1 A/B 4910registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 4911functions 4912now handle the split registers for PM1 Status, Enable, and Control. 4913ACPICA 4914BZ 4915746. 4916 4917Added a function to handle the PM1 control registers, 4918AcpiHwWritePm1Control. 4919This function writes both of the PM1 control registers (A/B). These 4920registers 4921are different than the PM1 A/B status and enable registers in that 4922different 4923values can be written to the A/B registers. Most notably, the SLP_TYP 4924bits 4925can be different, as per the values returned from the _Sx predefined 4926methods. 4927 4928Removed an extra register write within AcpiHwClearAcpiStatus. This 4929function 4930was writing an optional PM1B status register twice. The existing call to 4931the 4932low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 4933A/B 4934register. ACPICA BZ 751. 4935 4936Split out the PM1 Status registers from the FADT. Added new globals for 4937these 4938registers (A/B), similar to the way the PM1 Enable registers are handled. 4939Instead of overloading the FADT Event Register blocks. This makes the 4940code 4941clearer and less prone to error. 4942 4943Fixed the warning message for when the platform contains too many ACPI 4944tables 4945for the default size of the global root table data structure. The 4946calculation 4947for the truncation value was incorrect. 4948 4949Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 4950obsolete macro, since it is now a simple reference to ->common.type. 4951There 4952were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 4953 4954Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 4955TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 4956simply SLEEP_TYPE. ACPICA BZ 754. 4957 4958Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 4959function is only needed on 64-bit host operating systems and is thus not 4960included for 32-bit hosts. 4961 4962Debug output: print the input and result for invocations of the _OSI 4963reserved 4964control method via the ACPI_LV_INFO debug level. Also, reduced some of 4965the 4966verbosity of this debug level. Len Brown. 4967 4968Example Code and Data Size: These are the sizes for the OS-independent 4969acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4970debug version of the code includes the debug output trace mechanism and 4971has a 4972much larger code and data size. 4973 4974 Previous Release: 4975 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 4976 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 4977 Current Release: 4978 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 4979 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 4980 49812) iASL Compiler/Disassembler and Tools: 4982 4983Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 4984various legal performance profiles. 4985 4986---------------------------------------- 498723 January 2009. Summary of changes for version 20090123: 4988 49891) ACPI CA Core Subsystem: 4990 4991Added the 2009 copyright to all module headers and signons. This affects 4992virtually every file in the ACPICA core subsystem, the iASL compiler, and 4993the tools/utilities. 4994 4995Implemented a change to allow the host to override any ACPI table, 4996including 4997dynamically loaded tables. Previously, only the DSDT could be replaced by 4998the 4999host. With this change, the AcpiOsTableOverride interface is called for 5000each 5001table found in the RSDT/XSDT during ACPICA initialization, and also 5002whenever 5003a table is dynamically loaded via the AML Load operator. 5004 5005Updated FADT flag definitions, especially the Boot Architecture flags. 5006 5007Debugger: For the Find command, automatically pad the input ACPI name 5008with 5009underscores if the name is shorter than 4 characters. This enables a 5010match 5011with the actual namespace entry which is itself padded with underscores. 5012 5013Example Code and Data Size: These are the sizes for the OS-independent 5014acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5015debug version of the code includes the debug output trace mechanism and 5016has a 5017much larger code and data size. 5018 5019 Previous Release: 5020 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5021 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5022 Current Release: 5023 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 5024 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 5025 50262) iASL Compiler/Disassembler and Tools: 5027 5028Fix build error under Bison-2.4. 5029 5030Dissasembler: Enhanced FADT support. Added decoding of the Boot 5031Architecture 5032flags. Now decode all flags, regardless of the FADT version. Flag output 5033includes the FADT version which first defined each flag. 5034 5035The iASL -g option now dumps the RSDT to a file (in addition to the FADT 5036and 5037DSDT). Windows only. 5038 5039---------------------------------------- 504004 December 2008. Summary of changes for version 20081204: 5041 50421) ACPI CA Core Subsystem: 5043 5044The ACPICA Programmer Reference has been completely updated and revamped 5045for 5046this release. This includes updates to the external interfaces, OSL 5047interfaces, the overview sections, and the debugger reference. 5048 5049Several new ACPICA interfaces have been implemented and documented in the 5050programmer reference: 5051AcpiReset - Writes the reset value to the FADT-defined reset register. 5052AcpiDisableAllGpes - Disable all available GPEs. 5053AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 5054AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 5055AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 5056AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 5057AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 5058 5059Most of the public ACPI hardware-related interfaces have been moved to a 5060new 5061file, components/hardware/hwxface.c 5062 5063Enhanced the FADT parsing and low-level ACPI register access: The ACPI 5064register lengths within the FADT are now used, and the low level ACPI 5065register access no longer hardcodes the ACPI register lengths. Given that 5066there may be some risk in actually trusting the FADT register lengths, a 5067run- 5068time option was added to fall back to the default hardcoded lengths if 5069the 5070FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 5071option is set to true for now, and a warning is issued if a suspicious 5072FADT 5073register length is overridden with the default value. 5074 5075Fixed a reference count issue in NsRepairObject. This problem was 5076introduced 5077in version 20081031 as part of a fix to repair Buffer objects within 5078Packages. Lin Ming. 5079 5080Added semaphore support to the Linux/Unix application OS-services layer 5081(OSL). ACPICA BZ 448. Lin Ming. 5082 5083Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 5084will 5085be implemented in the OSL, or will binary semaphores be used instead. 5086 5087Example Code and Data Size: These are the sizes for the OS-independent 5088acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5089debug version of the code includes the debug output trace mechanism and 5090has a 5091much larger code and data size. 5092 5093 Previous Release: 5094 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5095 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5096 Current Release: 5097 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 5098 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 5099 51002) iASL Compiler/Disassembler and Tools: 5101 5102iASL: Completed the '-e' option to include additional ACPI tables in 5103order 5104to 5105aid with disassembly and External statement generation. ACPICA BZ 742. 5106Lin 5107Ming. 5108 5109iASL: Removed the "named object in while loop" error. The compiler cannot 5110determine how many times a loop will execute. ACPICA BZ 730. 5111 5112Disassembler: Implemented support for FADT revision 2 (MS extension). 5113ACPICA 5114BZ 743. 5115 5116Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 5117MCFG). 5118 5119---------------------------------------- 512031 October 2008. Summary of changes for version 20081031: 5121 51221) ACPI CA Core Subsystem: 5123 5124Restructured the ACPICA header files into public/private. acpi.h now 5125includes 5126only the "public" acpica headers. All other acpica headers are "private" 5127and 5128should not be included by acpica users. One new file, accommon.h is used 5129to 5130include the commonly used private headers for acpica code generation. 5131Future 5132plans include moving all private headers to a new subdirectory. 5133 5134Implemented an automatic Buffer->String return value conversion for 5135predefined ACPI methods. For these methods (such as _BIF), added 5136automatic 5137conversion for return objects that are required to be a String, but a 5138Buffer 5139was found instead. This can happen when reading string battery data from 5140an 5141operation region, because it used to be difficult to convert the data 5142from 5143buffer to string from within the ASL. Ensures that the host OS is 5144provided 5145with a valid null-terminated string. Linux BZ 11822. 5146 5147Updated the FACS waking vector interfaces. Split 5148AcpiSetFirmwareWakingVector 5149into two: one for the 32-bit vector, another for the 64-bit vector. This 5150is 5151required because the host OS must setup the wake much differently for 5152each 5153vector (real vs. protected mode, etc.) and the interface itself should 5154not 5155be 5156deciding which vector to use. Also, eliminated the 5157GetFirmwareWakingVector 5158interface, as it served no purpose (only the firmware reads the vector, 5159OS 5160only writes the vector.) ACPICA BZ 731. 5161 5162Implemented a mechanism to escape infinite AML While() loops. Added a 5163loop 5164counter to force exit from AML While loops if the count becomes too 5165large. 5166This can occur in poorly written AML when the hardware does not respond 5167within a while loop and the loop does not implement a timeout. The 5168maximum 5169loop count is configurable. A new exception code is returned when a loop 5170is 5171broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 5172 5173Optimized the execution of AML While loops. Previously, a control state 5174object was allocated and freed for each execution of the loop. The 5175optimization is to simply reuse the control state for each iteration. 5176This 5177speeds up the raw loop execution time by about 5%. 5178 5179Enhanced the implicit return mechanism. For Windows compatibility, return 5180an 5181implicit integer of value zero for methods that contain no executable 5182code. 5183Such methods are seen in the field as stubs (presumably), and can cause 5184drivers to fail if they expect a return value. Lin Ming. 5185 5186Allow multiple backslashes as root prefixes in namepaths. In a fully 5187qualified namepath, allow multiple backslash prefixes. This can happen 5188(and 5189is seen in the field) because of the use of a double-backslash in strings 5190(since backslash is the escape character) causing confusion. ACPICA BZ 5191739 5192Lin Ming. 5193 5194Emit a warning if two different FACS or DSDT tables are discovered in the 5195FADT. Checks if there are two valid but different addresses for the FACS 5196and 5197DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 5198 5199Consolidated the method argument count validation code. Merged the code 5200that 5201validates control method argument counts into the predefined validation 5202module. Eliminates possible multiple warnings for incorrect argument 5203counts. 5204 5205Implemented ACPICA example code. Includes code for ACPICA initialization, 5206handler installation, and calling a control method. Available at 5207source/tools/examples. 5208 5209Added a global pointer for FACS table to simplify internal FACS access. 5210Use 5211the global pointer instead of using AcpiGetTableByIndex for each FACS 5212access. 5213This simplifies the code for the Global Lock and the Firmware Waking 5214Vector(s). 5215 5216Example Code and Data Size: These are the sizes for the OS-independent 5217acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5218debug version of the code includes the debug output trace mechanism and 5219has a 5220much larger code and data size. 5221 5222 Previous Release: 5223 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 5224 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 5225 Current Release: 5226 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 5227 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 5228 52292) iASL Compiler/Disassembler and Tools: 5230 5231iASL: Improved disassembly of external method calls. Added the -e option 5232to 5233allow the inclusion of additional ACPI tables to help with the 5234disassembly 5235of 5236method invocations and the generation of external declarations during the 5237disassembly. Certain external method invocations cannot be disassembled 5238properly without the actual declaration of the method. Use the -e option 5239to 5240include the table where the external method(s) are actually declared. 5241Most 5242useful for disassembling SSDTs that make method calls back to the master 5243DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 5244-d 5245-e dsdt.aml ssdt1.aml 5246 5247iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 5248problem where the use of an alias within a namepath would result in a not 5249found error or cause the compiler to fault. Also now allows forward 5250references from the Alias operator itself. ACPICA BZ 738. 5251 5252---------------------------------------- 525326 September 2008. Summary of changes for version 20080926: 5254 52551) ACPI CA Core Subsystem: 5256 5257Designed and implemented a mechanism to validate predefined ACPI methods 5258and 5259objects. This code validates the predefined ACPI objects (objects whose 5260names 5261start with underscore) that appear in the namespace, at the time they are 5262evaluated. The argument count and the type of the returned object are 5263validated against the ACPI specification. The purpose of this validation 5264is 5265to detect problems with the BIOS-implemented predefined ACPI objects 5266before 5267the results are returned to the ACPI-related drivers. Future enhancements 5268may 5269include actual repair of incorrect return objects where possible. Two new 5270files are nspredef.c and acpredef.h. 5271 5272Fixed a fault in the AML parser if a memory allocation fails during the 5273Op 5274completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 5275 5276Fixed an issue with implicit return compatibility. This change improves 5277the 5278implicit return mechanism to be more compatible with the MS interpreter. 5279Lin 5280Ming, ACPICA BZ 349. 5281 5282Implemented support for zero-length buffer-to-string conversions. Allow 5283zero 5284length strings during interpreter buffer-to-string conversions. For 5285example, 5286during the ToDecimalString and ToHexString operators, as well as implicit 5287conversions. Fiodor Suietov, ACPICA BZ 585. 5288 5289Fixed two possible memory leaks in the error exit paths of 5290AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 5291are 5292similar in that they use a stack of state objects in order to eliminate 5293recursion. The stack must be fully unwound and deallocated if an error 5294occurs. Lin Ming. ACPICA BZ 383. 5295 5296Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 5297global 5298ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 5299Moore ACPICA BZ 442. 5300 5301Removed the obsolete version number in module headers. Removed the 5302"$Revision" number that appeared in each module header. This version 5303number 5304was useful under SourceSafe and CVS, but has no meaning under git. It is 5305not 5306only incorrect, it could also be misleading. 5307 5308Example Code and Data Size: These are the sizes for the OS-independent 5309acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5310debug version of the code includes the debug output trace mechanism and 5311has a 5312much larger code and data size. 5313 5314 Previous Release: 5315 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5316 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 5317 Current Release: 5318 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 5319 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 5320 5321---------------------------------------- 532229 August 2008. Summary of changes for version 20080829: 5323 53241) ACPI CA Core Subsystem: 5325 5326Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 5327Reference. Changes include the elimination of cheating on the Object 5328field 5329for the DdbHandle subtype, addition of a reference class field to 5330differentiate the various reference types (instead of an AML opcode), and 5331the 5332cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 5333 5334Reduce an error to a warning for an incorrect method argument count. 5335Previously aborted with an error if too few arguments were passed to a 5336control method via the external ACPICA interface. Now issue a warning 5337instead 5338and continue. Handles the case where the method inadvertently declares 5339too 5340many arguments, but does not actually use the extra ones. Applies mainly 5341to 5342the predefined methods. Lin Ming. Linux BZ 11032. 5343 5344Disallow the evaluation of named object types with no intrinsic value. 5345Return 5346AE_TYPE for objects that have no value and therefore evaluation is 5347undefined: 5348Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 5349of 5350these types were allowed, but an exception would be generated at some 5351point 5352during the evaluation. Now, the error is generated up front. 5353 5354Fixed a possible memory leak in the AcpiNsGetExternalPathname function 5355(nsnames.c). Fixes a leak in the error exit path. 5356 5357Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 5358debug 5359levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 5360ACPI_EXCEPTION 5361interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 5362ACPI_LV_EVENTS. 5363 5364Removed obsolete and/or unused exception codes from the acexcep.h header. 5365There is the possibility that certain device drivers may be affected if 5366they 5367use any of these exceptions. 5368 5369The ACPICA documentation has been added to the public git source tree, 5370under 5371acpica/documents. Included are the ACPICA programmer reference, the iASL 5372compiler reference, and the changes.txt release logfile. 5373 5374Example Code and Data Size: These are the sizes for the OS-independent 5375acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5376debug version of the code includes the debug output trace mechanism and 5377has a 5378much larger code and data size. 5379 5380 Previous Release: 5381 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5382 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 5383 Current Release: 5384 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5385 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 5386 53872) iASL Compiler/Disassembler and Tools: 5388 5389Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 5390defines _SCP with 3 arguments. Previous versions defined it with only 1 5391argument. iASL now allows both definitions. 5392 5393iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 5394zero- 5395length subtables when disassembling ACPI tables. Also fixed a couple of 5396errors where a full 16-bit table type field was not extracted from the 5397input 5398properly. 5399 5400acpisrc: Improve comment counting mechanism for generating source code 5401statistics. Count first and last lines of multi-line comments as 5402whitespace, 5403not comment lines. Handle Linux legal header in addition to standard 5404acpica 5405header. 5406 5407---------------------------------------- 5408 540929 July 2008. Summary of changes for version 20080729: 5410 54111) ACPI CA Core Subsystem: 5412 5413Fix a possible deadlock in the GPE dispatch. Remove call to 5414AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 5415attempt 5416to acquire the GPE lock but can deadlock since the GPE lock is already 5417held 5418at dispatch time. This code was introduced in version 20060831 as a 5419response 5420to Linux BZ 6881 and has since been removed from Linux. 5421 5422Add a function to dereference returned reference objects. Examines the 5423return 5424object from a call to AcpiEvaluateObject. Any Index or RefOf references 5425are 5426automatically dereferenced in an attempt to return something useful 5427(these 5428reference types cannot be converted into an external ACPI_OBJECT.) 5429Provides 5430MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 5431 5432x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 5433subtables for the MADT and one new subtable for the SRAT. Includes 5434disassembler and AcpiSrc support. Data from the Intel 64 Architecture 5435x2APIC 5436Specification, June 2008. 5437 5438Additional error checking for pathname utilities. Add error check after 5439all 5440calls to AcpiNsGetPathnameLength. Add status return from 5441AcpiNsBuildExternalPath and check after all calls. Add parameter 5442validation 5443to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 5444 5445Return status from the global init function AcpiUtGlobalInitialize. This 5446is 5447used by both the kernel subsystem and the utilities such as iASL 5448compiler. 5449The function could possibly fail when the caches are initialized. Yang 5450Yi. 5451 5452Add a function to decode reference object types to strings. Created for 5453improved error messages. 5454 5455Improve object conversion error messages. Better error messages during 5456object 5457conversion from internal to the external ACPI_OBJECT. Used for external 5458calls 5459to AcpiEvaluateObject. 5460 5461Example Code and Data Size: These are the sizes for the OS-independent 5462acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5463debug version of the code includes the debug output trace mechanism and 5464has a 5465much larger code and data size. 5466 5467 Previous Release: 5468 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 5469 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 5470 Current Release: 5471 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 5472 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 5473 54742) iASL Compiler/Disassembler and Tools: 5475 5476Debugger: fix a possible hang when evaluating non-methods. Fixes a 5477problem 5478introduced in version 20080701. If the object being evaluated (via 5479execute 5480command) is not a method, the debugger can hang while trying to obtain 5481non- 5482existent parameters. 5483 5484iASL: relax error for using reserved "_T_x" identifiers. These names can 5485appear in a disassembled ASL file if they were emitted by the original 5486compiler. Instead of issuing an error or warning and forcing the user to 5487manually change these names, issue a remark instead. 5488 5489iASL: error if named object created in while loop. Emit an error if any 5490named 5491object is created within a While loop. If allowed, this code will 5492generate 5493a 5494run-time error on the second iteration of the loop when an attempt is 5495made 5496to 5497create the same named object twice. ACPICA bugzilla 730. 5498 5499iASL: Support absolute pathnames for include files. Add support for 5500absolute 5501pathnames within the Include operator. previously, only relative 5502pathnames 5503were supported. 5504 5505iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 5506Descriptor. 5507The ACPI spec requires one interrupt minimum. BZ 423 5508 5509iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 5510Handles the case for the Interrupt Resource Descriptor where 5511the ResourceSource argument is omitted but ResourceSourceIndex 5512is present. Now leave room for the Index. BZ 426 5513 5514iASL: Prevent error message if CondRefOf target does not exist. Fixes 5515cases 5516where an error message is emitted if the target does not exist. BZ 516 5517 5518iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 5519(get ACPI tables on Windows). This was apparently broken in version 552020070919. 5521 5522AcpiXtract: Handle EOF while extracting data. Correctly handle the case 5523where 5524the EOF happens immediately after the last table in the input file. Print 5525completion message. Previously, no message was displayed in this case. 5526 5527---------------------------------------- 552801 July 2008. Summary of changes for version 20080701: 5529 55300) Git source tree / acpica.org 5531 5532Fixed a problem where a git-clone from http would not transfer the entire 5533source tree. 5534 55351) ACPI CA Core Subsystem: 5536 5537Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 5538enable bit. Now performs a read-change-write of the enable register 5539instead 5540of simply writing out the cached enable mask. This will prevent 5541inadvertent 5542enabling of GPEs if a rogue GPE is received during initialization (before 5543GPE 5544handlers are installed.) 5545 5546Implemented a copy for dynamically loaded tables. Previously, dynamically 5547loaded tables were simply mapped - but on some machines this memory is 5548corrupted after suspend. Now copy the table to a local buffer. For the 5549OpRegion case, added checksum verify. Use the table length from the table 5550header, not the region length. For the Buffer case, use the table length 5551also. Dennis Noordsij, Bob Moore. BZ 10734 5552 5553Fixed a problem where the same ACPI table could not be dynamically loaded 5554and 5555unloaded more than once. Without this change, a table cannot be loaded 5556again 5557once it has been loaded/unloaded one time. The current mechanism does not 5558unregister a table upon an unload. During a load, if the same table is 5559found, 5560this no longer returns an exception. BZ 722 5561 5562Fixed a problem where the wrong descriptor length was calculated for the 5563EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 5564EndTag 5565are calculated as 12 bytes long, but the actual length in the internal 5566descriptor is 16 because of the round-up to 8 on the 64-bit build. 5567Reported 5568by Linn Crosetto. BZ 728 5569 5570Fixed a possible memory leak in the Unload operator. The DdbHandle 5571returned 5572by Load() did not have its reference count decremented during unload, 5573leading 5574to a memory leak. Lin Ming. BZ 727 5575 5576Fixed a possible memory leak when deleting thermal/processor objects. Any 5577associated notify handlers (and objects) were not being deleted. Fiodor 5578Suietov. BZ 506 5579 5580Fixed the ordering of the ASCII names in the global mutex table to match 5581the 5582actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 5583only. 5584Vegard Nossum. BZ 726 5585 5586Enhanced the AcpiGetObjectInfo interface to return the number of required 5587arguments if the object is a control method. Added this call to the 5588debugger 5589so the proper number of default arguments are passed to a method. This 5590prevents a warning when executing methods from AcpiExec. 5591 5592Added a check for an invalid handle in AcpiGetObjectInfo. Return 5593AE_BAD_PARAMETER if input handle is invalid. BZ 474 5594 5595Fixed an extraneous warning from exconfig.c on the 64-bit build. 5596 5597Example Code and Data Size: These are the sizes for the OS-independent 5598acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5599debug version of the code includes the debug output trace mechanism and 5600has a 5601much larger code and data size. 5602 5603 Previous Release: 5604 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 5605 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 5606 Current Release: 5607 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 5608 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 5609 56102) iASL Compiler/Disassembler and Tools: 5611 5612iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 5613resource descriptor names. 5614 5615iASL: Detect invalid ASCII characters in input (windows version). Removed 5616the 5617"-CF" flag from the flex compile, enables correct detection of non-ASCII 5618characters in the input. BZ 441 5619 5620iASL: Eliminate warning when result of LoadTable is not used. Eliminate 5621the 5622"result of operation not used" warning when the DDB handle returned from 5623LoadTable is not used. The warning is not needed. BZ 590 5624 5625AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 5626method 5627to 5628pass address of table to the AML. Added option to disable OpRegion 5629simulation 5630to allow creation of an OpRegion with a real address that was passed to 5631_CFG. 5632All of this allows testing of the Load and Unload operators from 5633AcpiExec. 5634 5635Debugger: update tables command for unloaded tables. Handle unloaded 5636tables 5637and use the standard table header output routine. 5638 5639---------------------------------------- 564009 June 2008. Summary of changes for version 20080609: 5641 56421) ACPI CA Core Subsystem: 5643 5644Implemented a workaround for reversed _PRT entries. A significant number 5645of 5646BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 5647change dynamically detects and repairs this problem. Provides 5648compatibility 5649with MS ACPI. BZ 6859 5650 5651Simplified the internal ACPI hardware interfaces to eliminate the locking 5652flag parameter from Register Read/Write. Added a new external interface, 5653AcpiGetRegisterUnlocked. 5654 5655Fixed a problem where the invocation of a GPE control method could hang. 5656This 5657was a regression introduced in 20080514. The new method argument count 5658validation mechanism can enter an infinite loop when a GPE method is 5659dispatched. Problem fixed by removing the obsolete code that passed GPE 5660block 5661information to the notify handler via the control method parameter 5662pointer. 5663 5664Fixed a problem where the _SST execution status was incorrectly returned 5665to 5666the caller of AcpiEnterSleepStatePrep. This was a regression introduced 5667in 566820080514. _SST is optional and a NOT_FOUND exception should never be 5669returned. BZ 716 5670 5671Fixed a problem where a deleted object could be accessed from within the 5672AML 5673parser. This was a regression introduced in version 20080123 as a fix for 5674the 5675Unload operator. Lin Ming. BZ 10669 5676 5677Cleaned up the debug operand dump mechanism. Eliminated unnecessary 5678operands 5679and eliminated the use of a negative index in a loop. Operands are now 5680displayed in the correct order, not backwards. This also fixes a 5681regression 5682introduced in 20080514 on 64-bit systems where the elimination of 5683ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 5684715 5685 5686Fixed a possible memory leak in EvPciConfigRegionSetup where the error 5687exit 5688path did not delete a locally allocated structure. 5689 5690Updated definitions for the DMAR and SRAT tables to synchronize with the 5691current specifications. Includes disassembler support. 5692 5693Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 5694loop termination value was used. Loop terminated on iteration early, 5695missing 5696one mutex. Linn Crosetto 5697 5698Example Code and Data Size: These are the sizes for the OS-independent 5699acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5700debug version of the code includes the debug output trace mechanism and 5701has a 5702much larger code and data size. 5703 5704 Previous Release: 5705 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 5706 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 5707 Current Release: 5708 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 5709 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 5710 57112) iASL Compiler/Disassembler and Tools: 5712 5713Disassembler: Implemented support for EisaId() within _CID objects. Now 5714disassemble integer _CID objects back to EisaId invocations, including 5715multiple integers within _CID packages. Includes single-step support for 5716debugger also. 5717 5718Disassembler: Added support for DMAR and SRAT table definition changes. 5719 5720---------------------------------------- 572114 May 2008. Summary of changes for version 20080514: 5722 57231) ACPI CA Core Subsystem: 5724 5725Fixed a problem where GPEs were enabled too early during the ACPICA 5726initialization. This could lead to "handler not installed" errors on some 5727machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 5728This 5729ensures that all operation regions and devices throughout the namespace 5730have 5731been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 5732 5733Implemented a change to the enter sleep code. Moved execution of the _GTS 5734method to just before setting sleep enable bit. The execution was moved 5735from 5736AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 5737immediately before the SLP_EN bit is set, as per the ACPI specification. 5738Luming Yu, BZ 1653. 5739 5740Implemented a fix to disable unknown GPEs (2nd version). Now always 5741disable 5742the GPE, even if ACPICA thinks that that it is already disabled. It is 5743possible that the AML or some other code has enabled the GPE unbeknownst 5744to 5745the ACPICA code. 5746 5747Fixed a problem with the Field operator where zero-length fields would 5748return 5749an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 5750ASL 5751field declarations in Field(), BankField(), and IndexField(). BZ 10606. 5752 5753Implemented a fix for the Load operator, now load the table at the 5754namespace 5755root. This reverts a change introduced in version 20071019. The table is 5756now 5757loaded at the namespace root even though this goes against the ACPI 5758specification. This provides compatibility with other ACPI 5759implementations. 5760The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 5761Ming. 5762 5763Fixed a problem where ACPICA would not Load() tables with unusual 5764signatures. 5765Now ignore ACPI table signature for Load() operator. Only "SSDT" is 5766acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 5767Therefore, signature validation is worthless. Apparently MS ACPI accepts 5768such 5769signatures, ACPICA must be compatible. BZ 10454. 5770 5771Fixed a possible negative array index in AcpiUtValidateException. Added 5772NULL 5773fields to the exception string arrays to eliminate a -1 subtraction on 5774the 5775SubStatus field. 5776 5777Updated the debug tracking macros to reduce overall code and data size. 5778Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 5779instead of pointers to static strings. Jan Beulich and Bob Moore. 5780 5781Implemented argument count checking in control method invocation via 5782AcpiEvaluateObject. Now emit an error if too few arguments, warning if 5783too 5784many. This applies only to extern programmatic control method execution, 5785not 5786method-to-method calls within the AML. Lin Ming. 5787 5788Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 5789no 5790longer needed, especially with the removal of 16-bit support. It was 5791replaced 5792mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 5793bit 5794on 579532/64-bit platforms is required. 5796 5797Added the C const qualifier for appropriate string constants -- mostly 5798MODULE_NAME and printf format strings. Jan Beulich. 5799 5800Example Code and Data Size: These are the sizes for the OS-independent 5801acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5802debug version of the code includes the debug output trace mechanism and 5803has a 5804much larger code and data size. 5805 5806 Previous Release: 5807 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 5808 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 5809 Current Release: 5810 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 5811 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 5812 58132) iASL Compiler/Disassembler and Tools: 5814 5815Implemented ACPI table revision ID validation in the disassembler. Zero 5816is 5817always invalid. For DSDTs, the ID controls the interpreter integer width. 58181 5819means 32-bit and this is unusual. 2 or greater is 64-bit. 5820 5821---------------------------------------- 582221 March 2008. Summary of changes for version 20080321: 5823 58241) ACPI CA Core Subsystem: 5825 5826Implemented an additional change to the GPE support in order to suppress 5827spurious or stray GPEs. The AcpiEvDisableGpe function will now 5828permanently 5829disable incoming GPEs that are neither enabled nor disabled -- meaning 5830that 5831the GPE is unknown to the system. This should prevent future interrupt 5832floods 5833from that GPE. BZ 6217 (Zhang Rui) 5834 5835Fixed a problem where NULL package elements were not returned to the 5836AcpiEvaluateObject interface correctly. The element was simply ignored 5837instead of returning a NULL ACPI_OBJECT package element, potentially 5838causing 5839a buffer overflow and/or confusing the caller who expected a fixed number 5840of 5841elements. BZ 10132 (Lin Ming, Bob Moore) 5842 5843Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 5844Dword, 5845Qword), Field, BankField, and IndexField operators when invoked from 5846inside 5847an executing control method. In this case, these operators created 5848namespace 5849nodes that were incorrectly left marked as permanent nodes instead of 5850temporary nodes. This could cause a problem if there is race condition 5851between an exiting control method and a running namespace walk. (Reported 5852by 5853Linn Crosetto) 5854 5855Fixed a problem where the CreateField and CreateXXXField operators would 5856incorrectly allow duplicate names (the name of the field) with no 5857exception 5858generated. 5859 5860Implemented several changes for Notify handling. Added support for new 5861Notify 5862values (ACPI 2.0+) and improved the Notify debug output. Notify on 5863PowerResource objects is no longer allowed, as per the ACPI 5864specification. 5865(Bob Moore, Zhang Rui) 5866 5867All Reference Objects returned via the AcpiEvaluateObject interface are 5868now 5869marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 5870for 5871NULL objects - either NULL package elements or unresolved named 5872references. 5873 5874Fixed a problem where an extraneous debug message was produced for 5875package 5876objects (when debugging enabled). The message "Package List length larger 5877than NumElements count" is now produced in the correct case, and is now 5878an 5879error message rather than a debug message. Added a debug message for the 5880opposite case, where NumElements is larger than the Package List (the 5881package 5882will be padded out with NULL elements as per the ACPI spec.) 5883 5884Implemented several improvements for the output of the ASL "Debug" object 5885to 5886clarify and keep all data for a given object on one output line. 5887 5888Fixed two size calculation issues with the variable-length Start 5889Dependent 5890resource descriptor. 5891 5892Example Code and Data Size: These are the sizes for the OS-independent 5893acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5894debug version of the code includes the debug output trace mechanism and 5895has 5896a much larger code and data size. 5897 5898 Previous Release: 5899 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 5900 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 5901 Current Release: 5902 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 5903 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 5904 59052) iASL Compiler/Disassembler and Tools: 5906 5907Fixed a problem with the use of the Switch operator where execution of 5908the 5909containing method by multiple concurrent threads could cause an 5910AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 5911actual Switch opcode, it must be simulated with local named temporary 5912variables and if/else pairs. The solution chosen was to mark any method 5913that 5914uses Switch as Serialized, thus preventing multiple thread entries. BZ 5915469. 5916 5917---------------------------------------- 591813 February 2008. Summary of changes for version 20080213: 5919 59201) ACPI CA Core Subsystem: 5921 5922Implemented another MS compatibility design change for GPE/Notify 5923handling. 5924GPEs are now cleared/enabled asynchronously to allow all pending notifies 5925to 5926complete first. It is expected that the OSL will queue the enable request 5927behind all pending notify requests (may require changes to the local host 5928OSL 5929in AcpiOsExecute). Alexey Starikovskiy. 5930 5931Fixed a problem where buffer and package objects passed as arguments to a 5932control method via the external AcpiEvaluateObject interface could cause 5933an 5934AE_AML_INTERNAL exception depending on the order and type of operators 5935executed by the target control method. 5936 5937Fixed a problem where resource descriptor size optimization could cause a 5938problem when a _CRS resource template is passed to a _SRS method. The 5939_SRS 5940resource template must use the same descriptors (with the same size) as 5941returned from _CRS. This change affects the following resource 5942descriptors: 5943IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 59449487) 5945 5946Fixed a problem where a CopyObject to RegionField, BankField, and 5947IndexField 5948objects did not perform an implicit conversion as it should. These types 5949must 5950retain their initial type permanently as per the ACPI specification. 5951However, 5952a CopyObject to all other object types should not perform an implicit 5953conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 5954 5955Fixed a problem with the AcpiGetDevices interface where the mechanism to 5956match device CIDs did not examine the entire list of available CIDs, but 5957instead aborted on the first non-matching CID. Andrew Patterson. 5958 5959Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 5960was 5961inadvertently changed to return a 16-bit value instead of a 32-bit value, 5962truncating the upper dword of a 64-bit value. This macro is only used to 5963display debug output, so no incorrect calculations were made. Also, 5964reimplemented the macro so that a 64-bit shift is not performed by 5965inefficient compilers. 5966 5967Added missing va_end statements that should correspond with each va_start 5968statement. 5969 5970Example Code and Data Size: These are the sizes for the OS-independent 5971acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5972debug version of the code includes the debug output trace mechanism and 5973has 5974a much larger code and data size. 5975 5976 Previous Release: 5977 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 5978 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 5979 Current Release: 5980 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 5981 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 5982 59832) iASL Compiler/Disassembler and Tools: 5984 5985Implemented full disassembler support for the following new ACPI tables: 5986BERT, EINJ, and ERST. Implemented partial disassembler support for the 5987complicated HEST table. These tables support the Windows Hardware Error 5988Architecture (WHEA). 5989 5990---------------------------------------- 599123 January 2008. Summary of changes for version 20080123: 5992 59931) ACPI CA Core Subsystem: 5994 5995Added the 2008 copyright to all module headers and signons. This affects 5996virtually every file in the ACPICA core subsystem, the iASL compiler, and 5997the tools/utilities. 5998 5999Fixed a problem with the SizeOf operator when used with Package and 6000Buffer 6001objects. These objects have deferred execution for some arguments, and 6002the 6003execution is now completed before the SizeOf is executed. This problem 6004caused 6005unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 6006BZ 60079558 6008 6009Implemented an enhancement to the interpreter "slack mode". In the 6010absence 6011of 6012an explicit return or an implicitly returned object from the last 6013executed 6014opcode, a control method will now implicitly return an integer of value 0 6015for 6016Microsoft compatibility. (Lin Ming) BZ 392 6017 6018Fixed a problem with the Load operator where an exception was not 6019returned 6020in 6021the case where the table is already loaded. (Lin Ming) BZ 463 6022 6023Implemented support for the use of DDBHandles as an Indexed Reference, as 6024per 6025the ACPI spec. (Lin Ming) BZ 486 6026 6027Implemented support for UserTerm (Method invocation) for the Unload 6028operator 6029as per the ACPI spec. (Lin Ming) BZ 580 6030 6031Fixed a problem with the LoadTable operator where the OemId and 6032OemTableId 6033input strings could cause unexpected failures if they were shorter than 6034the 6035maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 6036 6037Implemented support for UserTerm (Method invocation) for the Unload 6038operator 6039as per the ACPI spec. (Lin Ming) BZ 580 6040 6041Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 6042HEST, 6043IBFT, UEFI, WDAT. Disassembler support is forthcoming. 6044 6045Example Code and Data Size: These are the sizes for the OS-independent 6046acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6047debug version of the code includes the debug output trace mechanism and 6048has 6049a much larger code and data size. 6050 6051 Previous Release: 6052 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6053 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6054 Current Release: 6055 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 6056 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 6057 60582) iASL Compiler/Disassembler and Tools: 6059 6060Implemented support in the disassembler for checksum validation on 6061incoming 6062binary DSDTs and SSDTs. If incorrect, a message is displayed within the 6063table 6064header dump at the start of the disassembly. 6065 6066Implemented additional debugging information in the namespace listing 6067file 6068created during compilation. In addition to the namespace hierarchy, the 6069full 6070pathname to each namespace object is displayed. 6071 6072Fixed a problem with the disassembler where invalid ACPI tables could 6073cause 6074faults or infinite loops. 6075 6076Fixed an unexpected parse error when using the optional "parameter types" 6077list in a control method declaration. (Lin Ming) BZ 397 6078 6079Fixed a problem where two External declarations with the same name did 6080not 6081cause an error (Lin Ming) BZ 509 6082 6083Implemented support for full TermArgs (adding Argx, Localx and method 6084invocation) for the ParameterData parameter to the LoadTable operator. 6085(Lin 6086Ming) BZ 583,587 6087 6088---------------------------------------- 608919 December 2007. Summary of changes for version 20071219: 6090 60911) ACPI CA Core Subsystem: 6092 6093Implemented full support for deferred execution for the TermArg string 6094arguments for DataTableRegion. This enables forward references and full 6095operand resolution for the three string arguments. Similar to 6096OperationRegion 6097deferred argument execution.) Lin Ming. BZ 430 6098 6099Implemented full argument resolution support for the BankValue argument 6100to 6101BankField. Previously, only constants were supported, now any TermArg may 6102be 6103used. Lin Ming BZ 387, 393 6104 6105Fixed a problem with AcpiGetDevices where the search of a branch of the 6106device tree could be terminated prematurely. In accordance with the ACPI 6107specification, the search down the current branch is terminated if a 6108device 6109is both not present and not functional (instead of just not present.) 6110Yakui 6111Zhao. 6112 6113Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 6114if 6115the underlying AML code changed the GPE enable registers. Now, any 6116unknown 6117incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 6118disabled 6119instead of simply ignored. Rui Zhang. 6120 6121Fixed a problem with Index Fields where the Index register was 6122incorrectly 6123limited to a maximum of 32 bits. Now any size may be used. 6124 6125Fixed a couple memory leaks associated with "implicit return" objects 6126when 6127the AML Interpreter slack mode is enabled. Lin Ming BZ 349 6128 6129Example Code and Data Size: These are the sizes for the OS-independent 6130acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6131debug version of the code includes the debug output trace mechanism and 6132has 6133a much larger code and data size. 6134 6135 Previous Release: 6136 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6137 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6138 Current Release: 6139 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 6140 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 6141 6142---------------------------------------- 614314 November 2007. Summary of changes for version 20071114: 6144 61451) ACPI CA Core Subsystem: 6146 6147Implemented event counters for each of the Fixed Events, the ACPI SCI 6148(interrupt) itself, and control methods executed. Named 6149AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 6150These 6151should be useful for debugging and statistics. 6152 6153Implemented a new external interface, AcpiGetStatistics, to retrieve the 6154contents of the various event counters. Returns the current values for 6155AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 6156AcpiMethodCount. The interface can be expanded in the future if new 6157counters 6158are added. Device drivers should use this interface rather than access 6159the 6160counters directly. 6161 6162Fixed a problem with the FromBCD and ToBCD operators. With some 6163compilers, 6164the ShortDivide function worked incorrectly, causing problems with the 6165BCD 6166functions with large input values. A truncation from 64-bit to 32-bit 6167inadvertently occurred. Internal BZ 435. Lin Ming 6168 6169Fixed a problem with Index references passed as method arguments. 6170References 6171passed as arguments to control methods were dereferenced immediately 6172(before 6173control was passed to the called method). The references are now 6174correctly 6175passed directly to the called method. BZ 5389. Lin Ming 6176 6177Fixed a problem with CopyObject used in conjunction with the Index 6178operator. 6179The reference was incorrectly dereferenced before the copy. The reference 6180is 6181now correctly copied. BZ 5391. Lin Ming 6182 6183Fixed a problem with Control Method references within Package objects. 6184These 6185references are now correctly generated. This completes the package 6186construction overhaul that began in version 20071019. 6187 6188Example Code and Data Size: These are the sizes for the OS-independent 6189acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6190debug version of the code includes the debug output trace mechanism and 6191has 6192a much larger code and data size. 6193 6194 Previous Release: 6195 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6196 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6197 Current Release: 6198 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 6199 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 6200 6201 62022) iASL Compiler/Disassembler and Tools: 6203 6204The AcpiExec utility now installs handlers for all of the predefined 6205Operation Region types. New types supported are: PCI_Config, CMOS, and 6206PCIBARTarget. 6207 6208Fixed a problem with the 64-bit version of AcpiExec where the extended 6209(64- 6210bit) address fields for the DSDT and FACS within the FADT were not being 6211used, causing truncation of the upper 32-bits of these addresses. Lin 6212Ming 6213and Bob Moore 6214 6215---------------------------------------- 621619 October 2007. Summary of changes for version 20071019: 6217 62181) ACPI CA Core Subsystem: 6219 6220Fixed a problem with the Alias operator when the target of the alias is a 6221named ASL operator that opens a new scope -- Scope, Device, 6222PowerResource, 6223Processor, and ThermalZone. In these cases, any children of the original 6224operator could not be accessed via the alias, potentially causing 6225unexpected 6226AE_NOT_FOUND exceptions. (BZ 9067) 6227 6228Fixed a problem with the Package operator where all named references were 6229created as object references and left otherwise unresolved. According to 6230the 6231ACPI specification, a Package can only contain Data Objects or references 6232to 6233control methods. The implication is that named references to Data Objects 6234(Integer, Buffer, String, Package, BufferField, Field) should be resolved 6235immediately upon package creation. This is the approach taken with this 6236change. References to all other named objects (Methods, Devices, Scopes, 6237etc.) are all now properly created as reference objects. (BZ 5328) 6238 6239Reverted a change to Notify handling that was introduced in version 624020070508. This version changed the Notify handling from asynchronous to 6241fully synchronous (Device driver Notify handling with respect to the 6242Notify 6243ASL operator). It was found that this change caused more problems than it 6244solved and was removed by most users. 6245 6246Fixed a problem with the Increment and Decrement operators where the type 6247of 6248the target object could be unexpectedly and incorrectly changed. (BZ 353) 6249Lin Ming. 6250 6251Fixed a problem with the Load and LoadTable operators where the table 6252location within the namespace was ignored. Instead, the table was always 6253loaded into the root or current scope. Lin Ming. 6254 6255Fixed a problem with the Load operator when loading a table from a buffer 6256object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 6257 6258Fixed a problem with the Debug object where a store of a DdbHandle 6259reference 6260object to the Debug object could cause a fault. 6261 6262Added a table checksum verification for the Load operator, in the case 6263where 6264the load is from a buffer. (BZ 578). 6265 6266Implemented additional parameter validation for the LoadTable operator. 6267The 6268length of the input strings SignatureString, OemIdString, and OemTableId 6269are 6270now checked for maximum lengths. (BZ 582) Lin Ming. 6271 6272Example Code and Data Size: These are the sizes for the OS-independent 6273acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6274debug version of the code includes the debug output trace mechanism and 6275has 6276a much larger code and data size. 6277 6278 Previous Release: 6279 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 6280 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 6281 Current Release: 6282 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 6283 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 6284 6285 62862) iASL Compiler/Disassembler: 6287 6288Fixed a problem where if a single file was specified and the file did not 6289exist, no error message was emitted. (Introduced with wildcard support in 6290version 20070917.) 6291 6292---------------------------------------- 629319 September 2007. Summary of changes for version 20070919: 6294 62951) ACPI CA Core Subsystem: 6296 6297Designed and implemented new external interfaces to install and remove 6298handlers for ACPI table-related events. Current events that are defined 6299are 6300LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 6301they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 6302AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 6303 6304Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 6305(acpi_serialized option on Linux) could cause some systems to hang during 6306initialization. (Bob Moore) BZ 8171 6307 6308Fixed a problem where objects of certain types (Device, ThermalZone, 6309Processor, PowerResource) can be not found if they are declared and 6310referenced from within the same control method (Lin Ming) BZ 341 6311 6312Example Code and Data Size: These are the sizes for the OS-independent 6313acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6314debug version of the code includes the debug output trace mechanism and 6315has 6316a much larger code and data size. 6317 6318 Previous Release: 6319 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 6320 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 6321 Current Release: 6322 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 6323 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 6324 6325 63262) iASL Compiler/Disassembler: 6327 6328Implemented support to allow multiple files to be compiled/disassembled 6329in 6330a 6331single invocation. This includes command line wildcard support for both 6332the 6333Windows and Unix versions of the compiler. This feature simplifies the 6334disassembly and compilation of multiple ACPI tables in a single 6335directory. 6336 6337---------------------------------------- 633808 May 2007. Summary of changes for version 20070508: 6339 63401) ACPI CA Core Subsystem: 6341 6342Implemented a Microsoft compatibility design change for the handling of 6343the 6344Notify AML operator. Previously, notify handlers were dispatched and 6345executed completely asynchronously in a deferred thread. The new design 6346still executes the notify handlers in a different thread, but the 6347original 6348thread that executed the Notify() now waits at a synchronization point 6349for 6350the notify handler to complete. Some machines depend on a synchronous 6351Notify 6352operator in order to operate correctly. 6353 6354Implemented support to allow Package objects to be passed as method 6355arguments to the external AcpiEvaluateObject interface. Previously, this 6356would return the AE_NOT_IMPLEMENTED exception. This feature had not been 6357implemented since there were no reserved control methods that required it 6358until recently. 6359 6360Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 6361that 6362contained invalid non-zero values in reserved fields could cause later 6363failures because these fields have meaning in later revisions of the 6364FADT. 6365For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 6366fields 6367are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 6368 6369Fixed a problem where the Global Lock handle was not properly updated if 6370a 6371thread that acquired the Global Lock via executing AML code then 6372attempted 6373to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 6374Joe 6375Liu. 6376 6377Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 6378could be corrupted if the interrupt being removed was at the head of the 6379list. Reported by Linn Crosetto. 6380 6381Example Code and Data Size: These are the sizes for the OS-independent 6382acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6383debug version of the code includes the debug output trace mechanism and 6384has 6385a much larger code and data size. 6386 6387 Previous Release: 6388 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6389 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 6390 Current Release: 6391 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 6392 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 6393 6394---------------------------------------- 639520 March 2007. Summary of changes for version 20070320: 6396 63971) ACPI CA Core Subsystem: 6398 6399Implemented a change to the order of interpretation and evaluation of AML 6400operand objects within the AML interpreter. The interpreter now evaluates 6401operands in the order that they appear in the AML stream (and the 6402corresponding ASL code), instead of in the reverse order (after the 6403entire 6404operand list has been parsed). The previous behavior caused several 6405subtle 6406incompatibilities with the Microsoft AML interpreter as well as being 6407somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 6408 6409Implemented a change to the ACPI Global Lock support. All interfaces to 6410the 6411global lock now allow the same thread to acquire the lock multiple times. 6412This affects the AcpiAcquireGlobalLock external interface to the global 6413lock 6414as well as the internal use of the global lock to support AML fields -- a 6415control method that is holding the global lock can now simultaneously 6416access 6417AML fields that require global lock protection. Previously, in both 6418cases, 6419this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 6420to 6421AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 6422Controller. There is no change to the behavior of the AML Acquire 6423operator, 6424as this can already be used to acquire a mutex multiple times by the same 6425thread. BZ 8066. With assistance from Alexey Starikovskiy. 6426 6427Fixed a problem where invalid objects could be referenced in the AML 6428Interpreter after error conditions. During operand evaluation, ensure 6429that 6430the internal "Return Object" field is cleared on error and only valid 6431pointers are stored there. Caused occasional access to deleted objects 6432that 6433resulted in "large reference count" warning messages. Valery Podrezov. 6434 6435Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 6436on 6437deeply nested control method invocations. BZ 7873, local BZ 487. Valery 6438Podrezov. 6439 6440Fixed an internal problem with the handling of result objects on the 6441interpreter result stack. BZ 7872. Valery Podrezov. 6442 6443Removed obsolete code that handled the case where AML_NAME_OP is the 6444target 6445of a reference (Reference.Opcode). This code was no longer necessary. BZ 64467874. Valery Podrezov. 6447 6448Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 6449was 6450a 6451remnant from the previously discontinued 16-bit support. 6452 6453Example Code and Data Size: These are the sizes for the OS-independent 6454acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6455debug version of the code includes the debug output trace mechanism and 6456has 6457a much larger code and data size. 6458 6459 Previous Release: 6460 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6461 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 6462 Current Release: 6463 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6464 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 6465 6466---------------------------------------- 646726 January 2007. Summary of changes for version 20070126: 6468 64691) ACPI CA Core Subsystem: 6470 6471Added the 2007 copyright to all module headers and signons. This affects 6472virtually every file in the ACPICA core subsystem, the iASL compiler, and 6473the utilities. 6474 6475Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 6476during a table load. A bad pointer was passed in the case where the DSDT 6477is 6478overridden, causing a fault in this case. 6479 6480Example Code and Data Size: These are the sizes for the OS-independent 6481acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6482debug version of the code includes the debug output trace mechanism and 6483has 6484a much larger code and data size. 6485 6486 Previous Release: 6487 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6488 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 6489 Current Release: 6490 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6491 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 6492 6493---------------------------------------- 649415 December 2006. Summary of changes for version 20061215: 6495 64961) ACPI CA Core Subsystem: 6497 6498Support for 16-bit ACPICA has been completely removed since it is no 6499longer 6500necessary and it clutters the code. All 16-bit macros, types, and 6501conditional compiles have been removed, cleaning up and simplifying the 6502code 6503across the entire subsystem. DOS support is no longer needed since the 6504bootable Linux firmware kit is now available. 6505 6506The handler for the Global Lock is now removed during AcpiTerminate to 6507enable a clean subsystem restart, via the implementation of the 6508AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 6509HP) 6510 6511Implemented enhancements to the multithreading support within the 6512debugger 6513to enable improved multithreading debugging and evaluation of the 6514subsystem. 6515(Valery Podrezov) 6516 6517Debugger: Enhanced the Statistics/Memory command to emit the total 6518(maximum) 6519memory used during the execution, as well as the maximum memory consumed 6520by 6521each of the various object types. (Valery Podrezov) 6522 6523Example Code and Data Size: These are the sizes for the OS-independent 6524acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6525debug version of the code includes the debug output trace mechanism and 6526has 6527a much larger code and data size. 6528 6529 Previous Release: 6530 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 6531 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 6532 Current Release: 6533 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 6534 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 6535 6536 65372) iASL Compiler/Disassembler and Tools: 6538 6539AcpiExec: Implemented a new option (-m) to display full memory use 6540statistics upon subsystem/program termination. (Valery Podrezov) 6541 6542---------------------------------------- 654309 November 2006. Summary of changes for version 20061109: 6544 65451) ACPI CA Core Subsystem: 6546 6547Optimized the Load ASL operator in the case where the source operand is 6548an 6549operation region. Simply map the operation region memory, instead of 6550performing a bytewise read. (Region must be of type SystemMemory, see 6551below.) 6552 6553Fixed the Load ASL operator for the case where the source operand is a 6554region field. A buffer object is also allowed as the source operand. BZ 6555480 6556 6557Fixed a problem where the Load ASL operator allowed the source operand to 6558be 6559an operation region of any type. It is now restricted to regions of type 6560SystemMemory, as per the ACPI specification. BZ 481 6561 6562Additional cleanup and optimizations for the new Table Manager code. 6563 6564AcpiEnable will now fail if all of the required ACPI tables are not 6565loaded 6566(FADT, FACS, DSDT). BZ 477 6567 6568Added #pragma pack(8/4) to acobject.h to ensure that the structures in 6569this 6570header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 6571manually optimized to be aligned and will not work if it is byte-packed. 6572 6573Example Code and Data Size: These are the sizes for the OS-independent 6574acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6575debug version of the code includes the debug output trace mechanism and 6576has 6577a much larger code and data size. 6578 6579 Previous Release: 6580 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 6581 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 6582 Current Release: 6583 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 6584 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 6585 6586 65872) iASL Compiler/Disassembler and Tools: 6588 6589Fixed a problem where the presence of the _OSI predefined control method 6590within complex expressions could cause an internal compiler error. 6591 6592AcpiExec: Implemented full region support for multiple address spaces. 6593SpaceId is now part of the REGION object. BZ 429 6594 6595---------------------------------------- 659611 October 2006. Summary of changes for version 20061011: 6597 65981) ACPI CA Core Subsystem: 6599 6600Completed an AML interpreter performance enhancement for control method 6601execution. Previously a 2-pass parse/execution, control methods are now 6602completely parsed and executed in a single pass. This improves overall 6603interpreter performance by ~25%, reduces code size, and reduces CPU stack 6604use. (Valery Podrezov + interpreter changes in version 20051202 that 6605eliminated namespace loading during the pass one parse.) 6606 6607Implemented _CID support for PCI Root Bridge detection. If the _HID does 6608not 6609match the predefined PCI Root Bridge IDs, the _CID list (if present) is 6610now 6611obtained and also checked for an ID match. 6612 6613Implemented additional support for the PCI _ADR execution: upsearch until 6614a 6615device scope is found before executing _ADR. This allows PCI_Config 6616operation regions to be declared locally within control methods 6617underneath 6618PCI device objects. 6619 6620Fixed a problem with a possible race condition between threads executing 6621AcpiWalkNamespace and the AML interpreter. This condition was removed by 6622modifying AcpiWalkNamespace to (by default) ignore all temporary 6623namespace 6624entries created during any concurrent control method execution. An 6625additional namespace race condition is known to exist between 6626AcpiWalkNamespace and the Load/Unload ASL operators and is still under 6627investigation. 6628 6629Restructured the AML ParseLoop function, breaking it into several 6630subfunctions in order to reduce CPU stack use and improve 6631maintainability. 6632(Mikhail Kouzmich) 6633 6634AcpiGetHandle: Fix for parameter validation to detect invalid 6635combinations 6636of prefix handle and pathname. BZ 478 6637 6638Example Code and Data Size: These are the sizes for the OS-independent 6639acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6640debug version of the code includes the debug output trace mechanism and 6641has 6642a much larger code and data size. 6643 6644 Previous Release: 6645 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 6646 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 6647 Current Release: 6648 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 6649 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 6650 66512) iASL Compiler/Disassembler and Tools: 6652 6653Ported the -g option (get local ACPI tables) to the new ACPICA Table 6654Manager 6655to restore original behavior. 6656 6657---------------------------------------- 665827 September 2006. Summary of changes for version 20060927: 6659 66601) ACPI CA Core Subsystem: 6661 6662Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 6663These functions now use a spinlock for mutual exclusion and the interrupt 6664level indication flag is not needed. 6665 6666Fixed a problem with the Global Lock where the lock could appear to be 6667obtained before it is actually obtained. The global lock semaphore was 6668inadvertently created with one unit instead of zero units. (BZ 464) 6669Fiodor 6670Suietov. 6671 6672Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 6673during 6674a read from a buffer or region field. (BZ 458) Fiodor Suietov. 6675 6676Example Code and Data Size: These are the sizes for the OS-independent 6677acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6678debug version of the code includes the debug output trace mechanism and 6679has 6680a much larger code and data size. 6681 6682 Previous Release: 6683 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 6684 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 6685 Current Release: 6686 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 6687 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 6688 6689 66902) iASL Compiler/Disassembler and Tools: 6691 6692Fixed a compilation problem with the pre-defined Resource Descriptor 6693field 6694names where an "object does not exist" error could be incorrectly 6695generated 6696if the parent ResourceTemplate pathname places the template within a 6697different namespace scope than the current scope. (BZ 7212) 6698 6699Fixed a problem where the compiler could hang after syntax errors 6700detected 6701in an ElseIf construct. (BZ 453) 6702 6703Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 6704operator. An incorrect output filename was produced when this parameter 6705was 6706a null string (""). Now, the original input filename is used as the AML 6707output filename, with an ".aml" extension. 6708 6709Implemented a generic batch command mode for the AcpiExec utility 6710(execute 6711any AML debugger command) (Valery Podrezov). 6712 6713---------------------------------------- 671412 September 2006. Summary of changes for version 20060912: 6715 67161) ACPI CA Core Subsystem: 6717 6718Enhanced the implementation of the "serialized mode" of the interpreter 6719(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 6720specified, instead of creating a serialization semaphore per control 6721method, 6722the interpreter lock is simply no longer released before a blocking 6723operation during control method execution. This effectively makes the AML 6724Interpreter single-threaded. The overhead of a semaphore per-method is 6725eliminated. 6726 6727Fixed a regression where an error was no longer emitted if a control 6728method 6729attempts to create 2 objects of the same name. This once again returns 6730AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 6731that 6732will dynamically serialize the control method to possible prevent future 6733errors. (BZ 440) 6734 6735Integrated a fix for a problem with PCI Express HID detection in the PCI 6736Config Space setup procedure. (BZ 7145) 6737 6738Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 6739AcpiHwInitialize function - the FADT registers are now validated when the 6740table is loaded. 6741 6742Added two new warnings during FADT verification - 1) if the FADT is 6743larger 6744than the largest known FADT version, and 2) if there is a mismatch 6745between 6746a 674732-bit block address and the 64-bit X counterpart (when both are non- 6748zero.) 6749 6750Example Code and Data Size: These are the sizes for the OS-independent 6751acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6752debug version of the code includes the debug output trace mechanism and 6753has 6754a much larger code and data size. 6755 6756 Previous Release: 6757 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 6758 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 6759 Current Release: 6760 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 6761 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 6762 6763 67642) iASL Compiler/Disassembler and Tools: 6765 6766Fixed a problem with the implementation of the Switch() operator where 6767the 6768temporary variable was declared too close to the actual Switch, instead 6769of 6770at method level. This could cause a problem if the Switch() operator is 6771within a while loop, causing an error on the second iteration. (BZ 460) 6772 6773Disassembler - fix for error emitted for unknown type for target of scope 6774operator. Now, ignore it and continue. 6775 6776Disassembly of an FADT now verifies the input FADT and reports any errors 6777found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 6778 6779Disassembly of raw data buffers with byte initialization data now 6780prefixes 6781each output line with the current buffer offset. 6782 6783Disassembly of ASF! table now includes all variable-length data fields at 6784the end of some of the subtables. 6785 6786The disassembler now emits a comment if a buffer appears to be a 6787ResourceTemplate, but cannot be disassembled as such because the EndTag 6788does 6789not appear at the very end of the buffer. 6790 6791AcpiExec - Added the "-t" command line option to enable the serialized 6792mode 6793of the AML interpreter. 6794 6795---------------------------------------- 679631 August 2006. Summary of changes for version 20060831: 6797 67981) ACPI CA Core Subsystem: 6799 6800Miscellaneous fixes for the Table Manager: 6801- Correctly initialize internal common FADT for all 64-bit "X" fields 6802- Fixed a couple table mapping issues during table load 6803- Fixed a couple alignment issues for IA64 6804- Initialize input array to zero in AcpiInitializeTables 6805- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 6806AcpiGetTableByIndex 6807 6808Change for GPE support: when a "wake" GPE is received, all wake GPEs are 6809now 6810immediately disabled to prevent the waking GPE from firing again and to 6811prevent other wake GPEs from interrupting the wake process. 6812 6813Added the AcpiGpeCount global that tracks the number of processed GPEs, 6814to 6815be used for debugging systems with a large number of ACPI interrupts. 6816 6817Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 6818both the ACPICA headers and the disassembler. 6819 6820Example Code and Data Size: These are the sizes for the OS-independent 6821acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6822debug version of the code includes the debug output trace mechanism and 6823has 6824a much larger code and data size. 6825 6826 Previous Release: 6827 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 6828 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 6829 Current Release: 6830 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 6831 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 6832 6833 68342) iASL Compiler/Disassembler and Tools: 6835 6836Disassembler support for the DMAR ACPI table. 6837 6838---------------------------------------- 683923 August 2006. Summary of changes for version 20060823: 6840 68411) ACPI CA Core Subsystem: 6842 6843The Table Manager component has been completely redesigned and 6844reimplemented. The new design is much simpler, and reduces the overall 6845code 6846and data size of the kernel-resident ACPICA by approximately 5%. Also, it 6847is 6848now possible to obtain the ACPI tables very early during kernel 6849initialization, even before dynamic memory management is initialized. 6850(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 6851 6852Obsolete ACPICA interfaces: 6853 6854- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 6855init 6856time). 6857- AcpiLoadTable: Not needed. 6858- AcpiUnloadTable: Not needed. 6859 6860New ACPICA interfaces: 6861 6862- AcpiInitializeTables: Must be called before the table manager can be 6863used. 6864- AcpiReallocateRootTable: Used to transfer the root table to dynamically 6865allocated memory after it becomes available. 6866- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 6867tables 6868in the RSDT/XSDT. 6869 6870Other ACPICA changes: 6871 6872- AcpiGetTableHeader returns the actual mapped table header, not a copy. 6873Use 6874AcpiOsUnmapMemory to free this mapping. 6875- AcpiGetTable returns the actual mapped table. The mapping is managed 6876internally and must not be deleted by the caller. Use of this interface 6877causes no additional dynamic memory allocation. 6878- AcpiFindRootPointer: Support for physical addressing has been 6879eliminated, 6880it appeared to be unused. 6881- The interface to AcpiOsMapMemory has changed to be consistent with the 6882other allocation interfaces. 6883- The interface to AcpiOsGetRootPointer has changed to eliminate 6884unnecessary 6885parameters. 6886- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 688764- 6888bit platforms. Was previously 64 bits on all platforms. 6889- The interface to the ACPI Global Lock acquire/release macros have 6890changed 6891slightly since ACPICA no longer keeps a local copy of the FACS with a 6892constructed pointer to the actual global lock. 6893 6894Porting to the new table manager: 6895 6896- AcpiInitializeTables: Must be called once, and can be called anytime 6897during the OS initialization process. It allows the host to specify an 6898area 6899of memory to be used to store the internal version of the RSDT/XSDT (root 6900table). This allows the host to access ACPI tables before memory 6901management 6902is initialized and running. 6903- AcpiReallocateRootTable: Can be called after memory management is 6904running 6905to copy the root table to a dynamically allocated array, freeing up the 6906scratch memory specified in the call to AcpiInitializeTables. 6907- AcpiSubsystemInitialize: This existing interface is independent of the 6908Table Manager, and does not have to be called before the Table Manager 6909can 6910be used, it only must be called before the rest of ACPICA can be used. 6911- ACPI Tables: Some changes have been made to the names and structure of 6912the 6913actbl.h and actbl1.h header files and may require changes to existing 6914code. 6915For example, bitfields have been completely removed because of their lack 6916of 6917portability across C compilers. 6918- Update interfaces to the Global Lock acquire/release macros if local 6919versions are used. (see acwin.h) 6920 6921Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 6922 6923New files: tbfind.c 6924 6925Example Code and Data Size: These are the sizes for the OS-independent 6926acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6927debug version of the code includes the debug output trace mechanism and 6928has 6929a much larger code and data size. 6930 6931 Previous Release: 6932 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 6933 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 6934 Current Release: 6935 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 6936 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 6937 6938 69392) iASL Compiler/Disassembler and Tools: 6940 6941No changes for this release. 6942 6943---------------------------------------- 694421 July 2006. Summary of changes for version 20060721: 6945 69461) ACPI CA Core Subsystem: 6947 6948The full source code for the ASL test suite used to validate the iASL 6949compiler and the ACPICA core subsystem is being released with the ACPICA 6950source for the first time. The source is contained in a separate package 6951and 6952consists of over 1100 files that exercise all ASL/AML operators. The 6953package 6954should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 6955Fiodor 6956Suietov) 6957 6958Completed a new design and implementation for support of the ACPI Global 6959Lock. On the OS side, the global lock is now treated as a standard AML 6960mutex. Previously, multiple OS threads could "acquire" the global lock 6961simultaneously. However, this could cause the BIOS to be starved out of 6962the 6963lock - especially in cases such as the Embedded Controller driver where 6964there is a tight coupling between the OS and the BIOS. 6965 6966Implemented an optimization for the ACPI Global Lock interrupt mechanism. 6967The Global Lock interrupt handler no longer queues the execution of a 6968separate thread to signal the global lock semaphore. Instead, the 6969semaphore 6970is signaled directly from the interrupt handler. 6971 6972Implemented support within the AML interpreter for package objects that 6973contain a larger AML length (package list length) than the package 6974element 6975count. In this case, the length of the package is truncated to match the 6976package element count. Some BIOS code apparently modifies the package 6977length 6978on the fly, and this change supports this behavior. Provides 6979compatibility 6980with the MS AML interpreter. (With assistance from Fiodor Suietov) 6981 6982Implemented a temporary fix for the BankValue parameter of a Bank Field 6983to 6984support all constant values, now including the Zero and One opcodes. 6985Evaluation of this parameter must eventually be converted to a full 6986TermArg 6987evaluation. A not-implemented error is now returned (temporarily) for 6988non- 6989constant values for this parameter. 6990 6991Fixed problem reports (Fiodor Suietov) integrated: 6992- Fix for premature object deletion after CopyObject on Operation Region 6993(BZ 6994350) 6995 6996Example Code and Data Size: These are the sizes for the OS-independent 6997acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6998debug version of the code includes the debug output trace mechanism and 6999has 7000a much larger code and data size. 7001 7002 Previous Release: 7003 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 7004 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 7005 Current Release: 7006 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7007 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7008 7009 70102) iASL Compiler/Disassembler and Tools: 7011 7012No changes for this release. 7013 7014---------------------------------------- 701507 July 2006. Summary of changes for version 20060707: 7016 70171) ACPI CA Core Subsystem: 7018 7019Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 7020that do not allow the initialization of address pointers within packed 7021structures - even though the hardware itself may support misaligned 7022transfers. Some of the debug data structures are packed by default to 7023minimize size. 7024 7025Added an error message for the case where AcpiOsGetThreadId() returns 7026zero. 7027A non-zero value is required by the core ACPICA code to ensure the proper 7028operation of AML mutexes and recursive control methods. 7029 7030The DSDT is now the only ACPI table that determines whether the AML 7031interpreter is in 32-bit or 64-bit mode. Not really a functional change, 7032but 7033the hooks for per-table 32/64 switching have been removed from the code. 7034A 7035clarification to the ACPI specification is forthcoming in ACPI 3.0B. 7036 7037Fixed a possible leak of an OwnerID in the error path of 7038AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 7039deletion to a single place in AcpiTbUninstallTable to correct possible 7040leaks 7041when using the AcpiTbDeleteTablesByType interface (with assistance from 7042Lance Ortiz.) 7043 7044Fixed a problem with Serialized control methods where the semaphore 7045associated with the method could be over-signaled after multiple method 7046invocations. 7047 7048Fixed two issues with the locking of the internal namespace data 7049structure. 7050Both the Unload() operator and AcpiUnloadTable interface now lock the 7051namespace during the namespace deletion associated with the table unload 7052(with assistance from Linn Crosetto.) 7053 7054Fixed problem reports (Valery Podrezov) integrated: 7055- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 7056 7057Fixed problem reports (Fiodor Suietov) integrated: 7058- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 7059- On Address Space handler deletion, needless deactivation call (BZ 374) 7060- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 7061375) 7062- Possible memory leak, Notify sub-objects of Processor, Power, 7063ThermalZone 7064(BZ 376) 7065- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 7066- Minimum Length of RSDT should be validated (BZ 379) 7067- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 7068Handler (BZ (380) 7069- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 7070loaded 7071(BZ 381) 7072 7073Example Code and Data Size: These are the sizes for the OS-independent 7074acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7075debug version of the code includes the debug output trace mechanism and 7076has 7077a much larger code and data size. 7078 7079 Previous Release: 7080 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7081 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7082 Current Release: 7083 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 7084 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 7085 7086 70872) iASL Compiler/Disassembler and Tools: 7088 7089Fixed problem reports: 7090Compiler segfault when ASL contains a long (>1024) String declaration (BZ 7091436) 7092 7093---------------------------------------- 709423 June 2006. Summary of changes for version 20060623: 7095 70961) ACPI CA Core Subsystem: 7097 7098Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 7099allows the type to be customized to the host OS for improved efficiency 7100(since a spinlock is usually a very small object.) 7101 7102Implemented support for "ignored" bits in the ACPI registers. According 7103to 7104the ACPI specification, these bits should be preserved when writing the 7105registers via a read/modify/write cycle. There are 3 bits preserved in 7106this 7107manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 7108 7109Implemented the initial deployment of new OSL mutex interfaces. Since 7110some 7111host operating systems have separate mutex and semaphore objects, this 7112feature was requested. The base code now uses mutexes (and the new mutex 7113interfaces) wherever a binary semaphore was used previously. However, for 7114the current release, the mutex interfaces are defined as macros to map 7115them 7116to the existing semaphore interfaces. Therefore, no OSL changes are 7117required 7118at this time. (See acpiosxf.h) 7119 7120Fixed several problems with the support for the control method SyncLevel 7121parameter. The SyncLevel now works according to the ACPI specification 7122and 7123in concert with the Mutex SyncLevel parameter, since the current 7124SyncLevel 7125is a property of the executing thread. Mutual exclusion for control 7126methods 7127is now implemented with a mutex instead of a semaphore. 7128 7129Fixed three instances of the use of the C shift operator in the bitfield 7130support code (exfldio.c) to avoid the use of a shift value larger than 7131the 7132target data width. The behavior of C compilers is undefined in this case 7133and 7134can cause unpredictable results, and therefore the case must be detected 7135and 7136avoided. (Fiodor Suietov) 7137 7138Added an info message whenever an SSDT or OEM table is loaded dynamically 7139via the Load() or LoadTable() ASL operators. This should improve 7140debugging 7141capability since it will show exactly what tables have been loaded 7142(beyond 7143the tables present in the RSDT/XSDT.) 7144 7145Example Code and Data Size: These are the sizes for the OS-independent 7146acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7147debug version of the code includes the debug output trace mechanism and 7148has 7149a much larger code and data size. 7150 7151 Previous Release: 7152 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7153 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7154 Current Release: 7155 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 7156 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 7157 7158 71592) iASL Compiler/Disassembler and Tools: 7160 7161No changes for this release. 7162 7163---------------------------------------- 716408 June 2006. Summary of changes for version 20060608: 7165 71661) ACPI CA Core Subsystem: 7167 7168Converted the locking mutex used for the ACPI hardware to a spinlock. 7169This 7170change should eliminate all problems caused by attempting to acquire a 7171semaphore at interrupt level, and it means that all ACPICA external 7172interfaces that directly access the ACPI hardware can be safely called 7173from 7174interrupt level. OSL code that implements the semaphore interfaces should 7175be 7176able to eliminate any workarounds for being called at interrupt level. 7177 7178Fixed a regression introduced in 20060526 where the ACPI device 7179initialization could be prematurely aborted with an AE_NOT_FOUND if a 7180device 7181did not have an optional _INI method. 7182 7183Fixed an IndexField issue where a write to the Data Register should be 7184limited in size to the AccessSize (width) of the IndexField itself. (BZ 7185433, 7186Fiodor Suietov) 7187 7188Fixed problem reports (Valery Podrezov) integrated: 7189- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 7190 7191Fixed problem reports (Fiodor Suietov) integrated: 7192- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 7193 7194Removed four global mutexes that were obsolete and were no longer being 7195used. 7196 7197Example Code and Data Size: These are the sizes for the OS-independent 7198acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7199debug version of the code includes the debug output trace mechanism and 7200has 7201a much larger code and data size. 7202 7203 Previous Release: 7204 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 7205 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 7206 Current Release: 7207 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 7208 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 7209 7210 72112) iASL Compiler/Disassembler and Tools: 7212 7213Fixed a fault when using -g option (get tables from registry) on Windows 7214machines. 7215 7216Fixed problem reports integrated: 7217- Generate error if CreateField NumBits parameter is zero. (BZ 405) 7218- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 7219Suietov) 7220- Global table revision override (-r) is ignored (BZ 413) 7221 7222---------------------------------------- 722326 May 2006. Summary of changes for version 20060526: 7224 72251) ACPI CA Core Subsystem: 7226 7227Restructured, flattened, and simplified the internal interfaces for 7228namespace object evaluation - resulting in smaller code, less CPU stack 7229use, 7230and fewer interfaces. (With assistance from Mikhail Kouzmich) 7231 7232Fixed a problem with the CopyObject operator where the first parameter 7233was 7234not typed correctly for the parser, interpreter, compiler, and 7235disassembler. 7236Caused various errors and unexpected behavior. 7237 7238Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 7239produced incorrect results with some C compilers. Since the behavior of C 7240compilers when the shift value is larger than the datatype width is 7241apparently not well defined, the interpreter now detects this condition 7242and 7243simply returns zero as expected in all such cases. (BZ 395) 7244 7245Fixed problem reports (Valery Podrezov) integrated: 7246- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 7247- Allow interpreter to handle nested method declarations (BZ 5361) 7248 7249Fixed problem reports (Fiodor Suietov) integrated: 7250- AcpiTerminate doesn't free debug memory allocation list objects (BZ 7251355) 7252- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 7253356) 7254- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 7255- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 7256- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 7257- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 7258- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 7259- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 7260- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 7261365) 7262- Status of the Global Initialization Handler call not used (BZ 366) 7263- Incorrect object parameter to Global Initialization Handler (BZ 367) 7264 7265Example Code and Data Size: These are the sizes for the OS-independent 7266acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7267debug version of the code includes the debug output trace mechanism and 7268has 7269a much larger code and data size. 7270 7271 Previous Release: 7272 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 7273 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 7274 Current Release: 7275 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 7276 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 7277 7278 72792) iASL Compiler/Disassembler and Tools: 7280 7281Modified the parser to allow the names IO, DMA, and IRQ to be used as 7282namespace identifiers with no collision with existing resource descriptor 7283macro names. This provides compatibility with other ASL compilers and is 7284most useful for disassembly/recompilation of existing tables without 7285parse 7286errors. (With assistance from Thomas Renninger) 7287 7288Disassembler: fixed an incorrect disassembly problem with the 7289DataTableRegion and CopyObject operators. Fixed a possible fault during 7290disassembly of some Alias operators. 7291 7292---------------------------------------- 729312 May 2006. Summary of changes for version 20060512: 7294 72951) ACPI CA Core Subsystem: 7296 7297Replaced the AcpiOsQueueForExecution interface with a new interface named 7298AcpiOsExecute. The major difference is that the new interface does not 7299have 7300a Priority parameter, this appeared to be useless and has been replaced 7301by 7302a 7303Type parameter. The Type tells the host what type of execution is being 7304requested, such as global lock handler, notify handler, GPE handler, etc. 7305This allows the host to queue and execute the request as appropriate for 7306the 7307request type, possibly using different work queues and different 7308priorities 7309for the various request types. This enables fixes for multithreading 7310deadlock problems such as BZ #5534, and will require changes to all 7311existing 7312OS interface layers. (Alexey Starikovskiy and Bob Moore) 7313 7314Fixed a possible memory leak associated with the support for the so- 7315called 7316"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 7317Suietov) 7318 7319Fixed a problem with the Load() operator where a table load from an 7320operation region could overwrite an internal table buffer by up to 7 7321bytes 7322and cause alignment faults on IPF systems. (With assistance from Luming 7323Yu) 7324 7325Example Code and Data Size: These are the sizes for the OS-independent 7326acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7327debug version of the code includes the debug output trace mechanism and 7328has 7329a much larger code and data size. 7330 7331 Previous Release: 7332 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 7333 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 7334 Current Release: 7335 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 7336 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 7337 7338 7339 73402) iASL Compiler/Disassembler and Tools: 7341 7342Disassembler: Implemented support to cross reference the internal 7343namespace 7344and automatically generate ASL External() statements for symbols not 7345defined 7346within the current table being disassembled. This will simplify the 7347disassembly and recompilation of interdependent tables such as SSDTs 7348since 7349these statements will no longer have to be added manually. 7350 7351Disassembler: Implemented experimental support to automatically detect 7352invocations of external control methods and generate appropriate 7353External() 7354statements. This is problematic because the AML cannot be correctly 7355parsed 7356until the number of arguments for each control method is known. 7357Currently, 7358standalone method invocations and invocations as the source operand of a 7359Store() statement are supported. 7360 7361Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 7362LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 7363LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 7364more readable and likely closer to the original ASL source. 7365 7366---------------------------------------- 736721 April 2006. Summary of changes for version 20060421: 7368 73691) ACPI CA Core Subsystem: 7370 7371Removed a device initialization optimization introduced in 20051216 where 7372the _STA method was not run unless an _INI was also present for the same 7373device. This optimization could cause problems because it could allow 7374_INI 7375methods to be run within a not-present device subtree. (If a not-present 7376device had no _INI, _STA would not be run, the not-present status would 7377not 7378be discovered, and the children of the device would be incorrectly 7379traversed.) 7380 7381Implemented a new _STA optimization where namespace subtrees that do not 7382contain _INI are identified and ignored during device initialization. 7383Selectively running _STA can significantly improve boot time on large 7384machines (with assistance from Len Brown.) 7385 7386Implemented support for the device initialization case where the returned 7387_STA flags indicate a device not-present but functioning. In this case, 7388_INI 7389is not run, but the device children are examined for presence, as per the 7390ACPI specification. 7391 7392Implemented an additional change to the IndexField support in order to 7393conform to MS behavior. The value written to the Index Register is not 7394simply a byte offset, it is a byte offset in units of the access width of 7395the parent Index Field. (Fiodor Suietov) 7396 7397Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 7398interface is called during the creation of all AML operation regions, and 7399allows the host OS to exert control over what addresses it will allow the 7400AML code to access. Operation Regions whose addresses are disallowed will 7401cause a runtime exception when they are actually accessed (will not 7402affect 7403or abort table loading.) See oswinxf or osunixxf for an example 7404implementation. 7405 7406Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 7407interface allows the host OS to match the various "optional" 7408interface/behavior strings for the _OSI predefined control method as 7409appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 7410for an example implementation. 7411 7412Restructured and corrected various problems in the exception handling 7413code 7414paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 7415(with assistance from Takayoshi Kochi.) 7416 7417Modified the Linux source converter to ignore quoted string literals 7418while 7419converting identifiers from mixed to lower case. This will correct 7420problems 7421with the disassembler and other areas where such strings must not be 7422modified. 7423 7424The ACPI_FUNCTION_* macros no longer require quotes around the function 7425name. This allows the Linux source converter to convert the names, now 7426that 7427the converter ignores quoted strings. 7428 7429Example Code and Data Size: These are the sizes for the OS-independent 7430acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7431debug version of the code includes the debug output trace mechanism and 7432has 7433a much larger code and data size. 7434 7435 Previous Release: 7436 7437 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 7438 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 7439 Current Release: 7440 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 7441 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 7442 7443 74442) iASL Compiler/Disassembler and Tools: 7445 7446Implemented 3 new warnings for iASL, and implemented multiple warning 7447levels 7448(w2 flag). 7449 74501) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 7451not 7452WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 7453check for the possible timeout, a warning is issued. 7454 74552) Useless operators: If an ASL operator does not specify an optional 7456target 7457operand and it also does not use the function return value from the 7458operator, a warning is issued since the operator effectively does 7459nothing. 7460 74613) Unreferenced objects: If a namespace object is created, but never 7462referenced, a warning is issued. This is a warning level 2 since there 7463are 7464cases where this is ok, such as when a secondary table is loaded that 7465uses 7466the unreferenced objects. Even so, care is taken to only flag objects 7467that 7468don't look like they will ever be used. For example, the reserved methods 7469(starting with an underscore) are usually not referenced because it is 7470expected that the OS will invoke them. 7471 7472---------------------------------------- 747331 March 2006. Summary of changes for version 20060331: 7474 74751) ACPI CA Core Subsystem: 7476 7477Implemented header file support for the following additional ACPI tables: 7478ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 7479support, 7480all current and known ACPI tables are now defined in the ACPICA headers 7481and 7482are available for use by device drivers and other software. 7483 7484Implemented support to allow tables that contain ACPI names with invalid 7485characters to be loaded. Previously, this would cause the table load to 7486fail, but since there are several known cases of such tables on existing 7487machines, this change was made to enable ACPI support for them. Also, 7488this 7489matches the behavior of the Microsoft ACPI implementation. 7490 7491Fixed a couple regressions introduced during the memory optimization in 7492the 749320060317 release. The namespace node definition required additional 7494reorganization and an internal datatype that had been changed to 8-bit 7495was 7496restored to 32-bit. (Valery Podrezov) 7497 7498Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 7499could be passed through to AcpiOsReleaseObject which is unexpected. Such 7500null pointers are now trapped and ignored, matching the behavior of the 7501previous implementation before the deployment of AcpiOsReleaseObject. 7502(Valery Podrezov, Fiodor Suietov) 7503 7504Fixed a memory mapping leak during the deletion of a SystemMemory 7505operation 7506region where a cached memory mapping was not deleted. This became a 7507noticeable problem for operation regions that are defined within 7508frequently 7509used control methods. (Dana Meyers) 7510 7511Reorganized the ACPI table header files into two main files: one for the 7512ACPI tables consumed by the ACPICA core, and another for the 7513miscellaneous 7514ACPI tables that are consumed by the drivers and other software. The 7515various 7516FADT definitions were merged into one common section and three different 7517tables (ACPI 1.0, 1.0+, and 2.0) 7518 7519Example Code and Data Size: These are the sizes for the OS-independent 7520acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7521debug version of the code includes the debug output trace mechanism and 7522has 7523a much larger code and data size. 7524 7525 Previous Release: 7526 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 7527 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 7528 Current Release: 7529 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 7530 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 7531 7532 75332) iASL Compiler/Disassembler and Tools: 7534 7535Disassembler: Implemented support to decode and format all non-AML ACPI 7536tables (tables other than DSDTs and SSDTs.) This includes the new tables 7537added to the ACPICA headers, therefore all current and known ACPI tables 7538are 7539supported. 7540 7541Disassembler: The change to allow ACPI names with invalid characters also 7542enables the disassembly of such tables. Invalid characters within names 7543are 7544changed to '*' to make the name printable; the iASL compiler will still 7545generate an error for such names, however, since this is an invalid ACPI 7546character. 7547 7548Implemented an option for AcpiXtract (-a) to extract all tables found in 7549the 7550input file. The default invocation extracts only the DSDTs and SSDTs. 7551 7552Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 7553makefile for the AcpiXtract utility. 7554 7555---------------------------------------- 755617 March 2006. Summary of changes for version 20060317: 7557 75581) ACPI CA Core Subsystem: 7559 7560Implemented the use of a cache object for all internal namespace nodes. 7561Since there are about 1000 static nodes in a typical system, this will 7562decrease memory use for cache implementations that minimize per- 7563allocation 7564overhead (such as a slab allocator.) 7565 7566Removed the reference count mechanism for internal namespace nodes, since 7567it 7568was deemed unnecessary. This reduces the size of each namespace node by 7569about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 7570case, 7571and 32 bytes for the 64-bit case. 7572 7573Optimized several internal data structures to reduce object size on 64- 7574bit 7575platforms by packing data within the 64-bit alignment. This includes the 7576frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 7577instances corresponding to the namespace objects. 7578 7579Added two new strings for the predefined _OSI method: "Windows 2001.1 7580SP1" 7581and "Windows 2006". 7582 7583Split the allocation tracking mechanism out to a separate file, from 7584utalloc.c to uttrack.c. This mechanism appears to be only useful for 7585application-level code. Kernels may wish to not include uttrack.c in 7586distributions. 7587 7588Removed all remnants of the obsolete ACPI_REPORT_* macros and the 7589associated 7590code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 7591macros.) 7592 7593Code and Data Size: These are the sizes for the acpica.lib produced by 7594the 7595Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 7596ACPI 7597driver or OSPM code. The debug version of the code includes the debug 7598output 7599trace mechanism and has a much larger code and data size. Note that these 7600values will vary depending on the efficiency of the compiler and the 7601compiler options used during generation. 7602 7603 Previous Release: 7604 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 7605 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 7606 Current Release: 7607 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 7608 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 7609 7610 76112) iASL Compiler/Disassembler and Tools: 7612 7613Implemented an ANSI C version of the acpixtract utility. This version 7614will 7615automatically extract the DSDT and all SSDTs from the input acpidump text 7616file and dump the binary output to separate files. It can also display a 7617summary of the input file including the headers for each table found and 7618will extract any single ACPI table, with any signature. (See 7619source/tools/acpixtract) 7620 7621---------------------------------------- 762210 March 2006. Summary of changes for version 20060310: 7623 76241) ACPI CA Core Subsystem: 7625 7626Tagged all external interfaces to the subsystem with the new 7627ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 7628assist 7629kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 7630macro. The default definition is NULL. 7631 7632Added the ACPI_THREAD_ID type for the return value from 7633AcpiOsGetThreadId. 7634This allows the host to define this as necessary to simplify kernel 7635integration. The default definition is ACPI_NATIVE_UINT. 7636 7637Fixed two interpreter problems related to error processing, the deletion 7638of 7639objects, and placing invalid pointers onto the internal operator result 7640stack. BZ 6028, 6151 (Valery Podrezov) 7641 7642Increased the reference count threshold where a warning is emitted for 7643large 7644reference counts in order to eliminate unnecessary warnings on systems 7645with 7646large namespaces (especially 64-bit.) Increased the value from 0x400 to 76470x800. 7648 7649Due to universal disagreement as to the meaning of the 'c' in the 7650calloc() 7651function, the ACPI_MEM_CALLOCATE macro has been renamed to 7652ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 7653ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 7654ACPI_FREE. 7655 7656Code and Data Size: These are the sizes for the acpica.lib produced by 7657the 7658Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 7659ACPI 7660driver or OSPM code. The debug version of the code includes the debug 7661output 7662trace mechanism and has a much larger code and data size. Note that these 7663values will vary depending on the efficiency of the compiler and the 7664compiler options used during generation. 7665 7666 Previous Release: 7667 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 7668 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 7669 Current Release: 7670 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 7671 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 7672 7673 76742) iASL Compiler/Disassembler: 7675 7676Disassembler: implemented support for symbolic resource descriptor 7677references. If a CreateXxxxField operator references a fixed offset 7678within 7679a 7680resource descriptor, a name is assigned to the descriptor and the offset 7681is 7682translated to the appropriate resource tag and pathname. The addition of 7683this support brings the disassembled code very close to the original ASL 7684source code and helps eliminate run-time errors when the disassembled 7685code 7686is modified (and recompiled) in such a way as to invalidate the original 7687fixed offsets. 7688 7689Implemented support for a Descriptor Name as the last parameter to the 7690ASL 7691Register() macro. This parameter was inadvertently left out of the ACPI 7692specification, and will be added for ACPI 3.0b. 7693 7694Fixed a problem where the use of the "_OSI" string (versus the full path 7695"\_OSI") caused an internal compiler error. ("No back ptr to op") 7696 7697Fixed a problem with the error message that occurs when an invalid string 7698is 7699used for a _HID object (such as one with an embedded asterisk: 7700"*PNP010A".) 7701The correct message is now displayed. 7702 7703---------------------------------------- 770417 February 2006. Summary of changes for version 20060217: 7705 77061) ACPI CA Core Subsystem: 7707 7708Implemented a change to the IndexField support to match the behavior of 7709the 7710Microsoft AML interpreter. The value written to the Index register is now 7711a 7712byte offset, no longer an index based upon the width of the Data 7713register. 7714This should fix IndexField problems seen on some machines where the Data 7715register is not exactly one byte wide. The ACPI specification will be 7716clarified on this point. 7717 7718Fixed a problem where several resource descriptor types could overrun the 7719internal descriptor buffer due to size miscalculation: VendorShort, 7720VendorLong, and Interrupt. This was noticed on IA64 machines, but could 7721affect all platforms. 7722 7723Fixed a problem where individual resource descriptors were misaligned 7724within 7725the internal buffer, causing alignment faults on IA64 platforms. 7726 7727Code and Data Size: These are the sizes for the acpica.lib produced by 7728the 7729Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 7730ACPI 7731driver or OSPM code. The debug version of the code includes the debug 7732output 7733trace mechanism and has a much larger code and data size. Note that these 7734values will vary depending on the efficiency of the compiler and the 7735compiler options used during generation. 7736 7737 Previous Release: 7738 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 7739 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 7740 Current Release: 7741 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 7742 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 7743 7744 77452) iASL Compiler/Disassembler: 7746 7747Implemented support for new reserved names: _WDG and _WED are Microsoft 7748extensions for Windows Instrumentation Management, _TDL is a new ACPI- 7749defined method (Throttling Depth Limit.) 7750 7751Fixed a problem where a zero-length VendorShort or VendorLong resource 7752descriptor was incorrectly emitted as a descriptor of length one. 7753 7754---------------------------------------- 775510 February 2006. Summary of changes for version 20060210: 7756 77571) ACPI CA Core Subsystem: 7758 7759Removed a couple of extraneous ACPI_ERROR messages that appeared during 7760normal execution. These became apparent after the conversion from 7761ACPI_DEBUG_PRINT. 7762 7763Fixed a problem where the CreateField operator could hang if the BitIndex 7764or 7765NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 7766 7767Fixed a problem where a DeRefOf operation on a buffer object incorrectly 7768failed with an exception. This also fixes a couple of related RefOf and 7769DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 7770 7771Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 7772of 7773AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 7774BZ 77755480) 7776 7777Implemented a memory cleanup at the end of the execution of each 7778iteration 7779of an AML While() loop, preventing the accumulation of outstanding 7780objects. 7781(Valery Podrezov, BZ 5427) 7782 7783Eliminated a chunk of duplicate code in the object resolution code. 7784(Valery 7785Podrezov, BZ 5336) 7786 7787Fixed several warnings during the 64-bit code generation. 7788 7789The AcpiSrc source code conversion tool now inserts one line of 7790whitespace 7791after an if() statement that is followed immediately by a comment, 7792improving 7793readability of the Linux code. 7794 7795Code and Data Size: The current and previous library sizes for the core 7796subsystem are shown below. These are the code and data sizes for the 7797acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 7798These 7799values do not include any ACPI driver or OSPM code. The debug version of 7800the 7801code includes the debug output trace mechanism and has a much larger code 7802and data size. Note that these values will vary depending on the 7803efficiency 7804of the compiler and the compiler options used during generation. 7805 7806 Previous Release: 7807 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 7808 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 7809 Current Release: 7810 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 7811 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 7812 7813 78142) iASL Compiler/Disassembler: 7815 7816Fixed a problem with the disassembly of a BankField operator with a 7817complex 7818expression for the BankValue parameter. 7819 7820---------------------------------------- 782127 January 2006. Summary of changes for version 20060127: 7822 78231) ACPI CA Core Subsystem: 7824 7825Implemented support in the Resource Manager to allow unresolved 7826namestring 7827references within resource package objects for the _PRT method. This 7828support 7829is in addition to the previously implemented unresolved reference support 7830within the AML parser. If the interpreter slack mode is enabled, these 7831unresolved references will be passed through to the caller as a NULL 7832package 7833entry. 7834 7835Implemented and deployed new macros and functions for error and warning 7836messages across the subsystem. These macros are simpler and generate less 7837code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 7838ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 7839macros remain defined to allow ACPI drivers time to migrate to the new 7840macros. 7841 7842Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 7843the 7844Acquire/Release Lock OSL interfaces. 7845 7846Fixed a problem where Alias ASL operators are sometimes not correctly 7847resolved, in both the interpreter and the iASL compiler. 7848 7849Fixed several problems with the implementation of the 7850ConcatenateResTemplate 7851ASL operator. As per the ACPI specification, zero length buffers are now 7852treated as a single EndTag. One-length buffers always cause a fatal 7853exception. Non-zero length buffers that do not end with a full 2-byte 7854EndTag 7855cause a fatal exception. 7856 7857Fixed a possible structure overwrite in the AcpiGetObjectInfo external 7858interface. (With assistance from Thomas Renninger) 7859 7860Code and Data Size: The current and previous library sizes for the core 7861subsystem are shown below. These are the code and data sizes for the 7862acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 7863These 7864values do not include any ACPI driver or OSPM code. The debug version of 7865the 7866code includes the debug output trace mechanism and has a much larger code 7867and data size. Note that these values will vary depending on the 7868efficiency 7869of the compiler and the compiler options used during generation. 7870 7871 Previous Release: 7872 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 7873 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 7874 Current Release: 7875 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 7876 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 7877 7878 78792) iASL Compiler/Disassembler: 7880 7881Fixed an internal error that was generated for any forward references to 7882ASL 7883Alias objects. 7884 7885---------------------------------------- 788613 January 2006. Summary of changes for version 20060113: 7887 78881) ACPI CA Core Subsystem: 7889 7890Added 2006 copyright to all module headers and signons. This affects 7891virtually every file in the ACPICA core subsystem, iASL compiler, and the 7892utilities. 7893 7894Enhanced the ACPICA error reporting in order to simplify user migration 7895to 7896the non-debug version of ACPICA. Replaced all instances of the 7897ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 7898debug 7899levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 7900respectively. This preserves all error and warning messages in the non- 7901debug 7902version of the ACPICA code (this has been referred to as the "debug lite" 7903option.) Over 200 cases were converted to create a total of over 380 7904error/warning messages across the ACPICA code. This increases the code 7905and 7906data size of the default non-debug version of the code somewhat (about 790713K), 7908but all error/warning reporting may be disabled if desired (and code 7909eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 7910configuration option. The size of the debug version of ACPICA remains 7911about 7912the same. 7913 7914Fixed a memory leak within the AML Debugger "Set" command. One object was 7915not properly deleted for every successful invocation of the command. 7916 7917Code and Data Size: The current and previous library sizes for the core 7918subsystem are shown below. These are the code and data sizes for the 7919acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 7920These 7921values do not include any ACPI driver or OSPM code. The debug version of 7922the 7923code includes the debug output trace mechanism and has a much larger code 7924and data size. Note that these values will vary depending on the 7925efficiency 7926of the compiler and the compiler options used during generation. 7927 7928 Previous Release: 7929 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 7930 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 7931 Current Release: 7932 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 7933 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 7934 7935 79362) iASL Compiler/Disassembler: 7937 7938The compiler now officially supports the ACPI 3.0a specification that was 7939released on December 30, 2005. (Specification is available at 7940www.acpi.info) 7941 7942---------------------------------------- 794316 December 2005. Summary of changes for version 20051216: 7944 79451) ACPI CA Core Subsystem: 7946 7947Implemented optional support to allow unresolved names within ASL Package 7948objects. A null object is inserted in the package when a named reference 7949cannot be located in the current namespace. Enabled via the interpreter 7950slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 7951machines 7952that contain such code. 7953 7954Implemented an optimization to the initialization sequence that can 7955improve 7956boot time. During ACPI device initialization, the _STA method is now run 7957if 7958and only if the _INI method exists. The _STA method is used to determine 7959if 7960the device is present; An _INI can only be run if _STA returns present, 7961but 7962it is a waste of time to run the _STA method if the _INI does not exist. 7963(Prototype and assistance from Dong Wei) 7964 7965Implemented use of the C99 uintptr_t for the pointer casting macros if it 7966is 7967available in the current compiler. Otherwise, the default (void *) cast 7968is 7969used as before. 7970 7971Fixed some possible memory leaks found within the execution path of the 7972Break, Continue, If, and CreateField operators. (Valery Podrezov) 7973 7974Fixed a problem introduced in the 20051202 release where an exception is 7975generated during method execution if a control method attempts to declare 7976another method. 7977 7978Moved resource descriptor string constants that are used by both the AML 7979disassembler and AML debugger to the common utilities directory so that 7980these components are independent. 7981 7982Implemented support in the AcpiExec utility (-e switch) to globally 7983ignore 7984exceptions during control method execution (method is not aborted.) 7985 7986Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 7987generation. 7988 7989Code and Data Size: The current and previous library sizes for the core 7990subsystem are shown below. These are the code and data sizes for the 7991acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 7992These 7993values do not include any ACPI driver or OSPM code. The debug version of 7994the 7995code includes the debug output trace mechanism and has a much larger code 7996and data size. Note that these values will vary depending on the 7997efficiency 7998of the compiler and the compiler options used during generation. 7999 8000 Previous Release: 8001 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8002 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8003 Current Release: 8004 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 8005 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 8006 8007 80082) iASL Compiler/Disassembler: 8009 8010Fixed a problem where a CPU stack overflow fault could occur if a 8011recursive 8012method call was made from within a Return statement. 8013 8014---------------------------------------- 801502 December 2005. Summary of changes for version 20051202: 8016 80171) ACPI CA Core Subsystem: 8018 8019Modified the parsing of control methods to no longer create namespace 8020objects during the first pass of the parse. Objects are now created only 8021during the execute phase, at the moment the namespace creation operator 8022is 8023encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 8024This 8025should eliminate ALREADY_EXISTS exceptions seen on some machines where 8026reentrant control methods are protected by an AML mutex. The mutex will 8027now 8028correctly block multiple threads from attempting to create the same 8029object 8030more than once. 8031 8032Increased the number of available Owner Ids for namespace object tracking 8033from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 8034on 8035some machines with a large number of ACPI tables (either static or 8036dynamic). 8037 8038Fixed a problem with the AcpiExec utility where a fault could occur when 8039the 8040-b switch (batch mode) is used. 8041 8042Enhanced the namespace dump routine to output the owner ID for each 8043namespace object. 8044 8045Code and Data Size: The current and previous library sizes for the core 8046subsystem are shown below. These are the code and data sizes for the 8047acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8048These 8049values do not include any ACPI driver or OSPM code. The debug version of 8050the 8051code includes the debug output trace mechanism and has a much larger code 8052and data size. Note that these values will vary depending on the 8053efficiency 8054of the compiler and the compiler options used during generation. 8055 8056 Previous Release: 8057 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8058 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8059 Current Release: 8060 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8061 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 8062 8063 80642) iASL Compiler/Disassembler: 8065 8066Fixed a parse error during compilation of certain Switch/Case constructs. 8067To 8068simplify the parse, the grammar now allows for multiple Default 8069statements 8070and this error is now detected and flagged during the analysis phase. 8071 8072Disassembler: The disassembly now includes the contents of the original 8073table header within a comment at the start of the file. This includes the 8074name and version of the original ASL compiler. 8075 8076---------------------------------------- 807717 November 2005. Summary of changes for version 20051117: 8078 80791) ACPI CA Core Subsystem: 8080 8081Fixed a problem in the AML parser where the method thread count could be 8082decremented below zero if any errors occurred during the method parse 8083phase. 8084This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 8085machines. 8086This also fixed a related regression with the mechanism that detects and 8087corrects methods that cannot properly handle reentrancy (related to the 8088deployment of the new OwnerId mechanism.) 8089 8090Eliminated the pre-parsing of control methods (to detect errors) during 8091table load. Related to the problem above, this was causing unwind issues 8092if 8093any errors occurred during the parse, and it seemed to be overkill. A 8094table 8095load should not be aborted if there are problems with any single control 8096method, thus rendering this feature rather pointless. 8097 8098Fixed a problem with the new table-driven resource manager where an 8099internal 8100buffer overflow could occur for small resource templates. 8101 8102Implemented a new external interface, AcpiGetVendorResource. This 8103interface 8104will find and return a vendor-defined resource descriptor within a _CRS 8105or 8106_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 8107Helgaas. 8108 8109Removed the length limit (200) on string objects as per the upcoming ACPI 81103.0A specification. This affects the following areas of the interpreter: 81111) 8112any implicit conversion of a Buffer to a String, 2) a String object 8113result 8114of the ASL Concatentate operator, 3) the String object result of the ASL 8115ToString operator. 8116 8117Fixed a problem in the Windows OS interface layer (OSL) where a 8118WAIT_FOREVER 8119on a semaphore object would incorrectly timeout. This allows the 8120multithreading features of the AcpiExec utility to work properly under 8121Windows. 8122 8123Updated the Linux makefiles for the iASL compiler and AcpiExec to include 8124the recently added file named "utresrc.c". 8125 8126Code and Data Size: The current and previous library sizes for the core 8127subsystem are shown below. These are the code and data sizes for the 8128acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8129These 8130values do not include any ACPI driver or OSPM code. The debug version of 8131the 8132code includes the debug output trace mechanism and has a much larger code 8133and data size. Note that these values will vary depending on the 8134efficiency 8135of the compiler and the compiler options used during generation. 8136 8137 Previous Release: 8138 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8139 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8140 Current Release: 8141 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 8142 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8143 8144 81452) iASL Compiler/Disassembler: 8146 8147Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 8148specification. For the iASL compiler, this means that string literals 8149within 8150the source ASL can be of any length. 8151 8152Enhanced the listing output to dump the AML code for resource descriptors 8153immediately after the ASL code for each descriptor, instead of in a block 8154at 8155the end of the entire resource template. 8156 8157Enhanced the compiler debug output to dump the entire original parse tree 8158constructed during the parse phase, before any transforms are applied to 8159the 8160tree. The transformed tree is dumped also. 8161 8162---------------------------------------- 816302 November 2005. Summary of changes for version 20051102: 8164 81651) ACPI CA Core Subsystem: 8166 8167Modified the subsystem initialization sequence to improve GPE support. 8168The 8169GPE initialization has been split into two parts in order to defer 8170execution 8171of the _PRW methods (Power Resources for Wake) until after the hardware 8172is 8173fully initialized and the SCI handler is installed. This allows the _PRW 8174methods to access fields protected by the Global Lock. This will fix 8175systems 8176where a NO_GLOBAL_LOCK exception has been seen during initialization. 8177 8178Converted the ACPI internal object disassemble and display code within 8179the 8180AML debugger to fully table-driven operation, reducing code size and 8181increasing maintainability. 8182 8183Fixed a regression with the ConcatenateResTemplate() ASL operator 8184introduced 8185in the 20051021 release. 8186 8187Implemented support for "local" internal ACPI object types within the 8188debugger "Object" command and the AcpiWalkNamespace external interfaces. 8189These local types include RegionFields, BankFields, IndexFields, Alias, 8190and 8191reference objects. 8192 8193Moved common AML resource handling code into a new file, "utresrc.c". 8194This 8195code is shared by both the Resource Manager and the AML Debugger. 8196 8197Code and Data Size: The current and previous library sizes for the core 8198subsystem are shown below. These are the code and data sizes for the 8199acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8200These 8201values do not include any ACPI driver or OSPM code. The debug version of 8202the 8203code includes the debug output trace mechanism and has a much larger code 8204and data size. Note that these values will vary depending on the 8205efficiency 8206of the compiler and the compiler options used during generation. 8207 8208 Previous Release: 8209 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 8210 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 8211 Current Release: 8212 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 8213 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 8214 8215 82162) iASL Compiler/Disassembler: 8217 8218Fixed a problem with very large initializer lists (more than 4000 8219elements) 8220for both Buffer and Package objects where the parse stack could overflow. 8221 8222Enhanced the pre-compile source code scan for non-ASCII characters to 8223ignore 8224characters within comment fields. The scan is now always performed and is 8225no 8226longer optional, detecting invalid characters within a source file 8227immediately rather than during the parse phase or later. 8228 8229Enhanced the ASL grammar definition to force early reductions on all 8230list- 8231style grammar elements so that the overall parse stack usage is greatly 8232reduced. This should improve performance and reduce the possibility of 8233parse 8234stack overflow. 8235 8236Eliminated all reduce/reduce conflicts in the iASL parser generation. 8237Also, 8238with the addition of a %expected statement, the compiler generates from 8239source with no warnings. 8240 8241Fixed a possible segment fault in the disassembler if the input filename 8242does not contain a "dot" extension (Thomas Renninger). 8243 8244---------------------------------------- 824521 October 2005. Summary of changes for version 20051021: 8246 82471) ACPI CA Core Subsystem: 8248 8249Implemented support for the EM64T and other x86-64 processors. This 8250essentially entails recognizing that these processors support non-aligned 8251memory transfers. Previously, all 64-bit processors were assumed to lack 8252hardware support for non-aligned transfers. 8253 8254Completed conversion of the Resource Manager to nearly full table-driven 8255operation. Specifically, the resource conversion code (convert AML to 8256internal format and the reverse) and the debug code to dump internal 8257resource descriptors are fully table-driven, reducing code and data size 8258and 8259improving maintainability. 8260 8261The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 8262word 8263on 64-bit processors instead of a fixed 32-bit word. (With assistance 8264from 8265Alexey Starikovskiy) 8266 8267Implemented support within the resource conversion code for the Type- 8268Specific byte within the various ACPI 3.0 *WordSpace macros. 8269 8270Fixed some issues within the resource conversion code for the type- 8271specific 8272flags for both Memory and I/O address resource descriptors. For Memory, 8273implemented support for the MTP and TTP flags. For I/O, split the TRS and 8274TTP flags into two separate fields. 8275 8276Code and Data Size: The current and previous library sizes for the core 8277subsystem are shown below. These are the code and data sizes for the 8278acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8279These 8280values do not include any ACPI driver or OSPM code. The debug version of 8281the 8282code includes the debug output trace mechanism and has a much larger code 8283and data size. Note that these values will vary depending on the 8284efficiency 8285of the compiler and the compiler options used during generation. 8286 8287 Previous Release: 8288 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 8289 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 8290 Current Release: 8291 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 8292 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 8293 8294 8295 82962) iASL Compiler/Disassembler: 8297 8298Relaxed a compiler restriction that disallowed a ResourceIndex byte if 8299the 8300corresponding ResourceSource string was not also present in a resource 8301descriptor declaration. This restriction caused problems with existing 8302AML/ASL code that includes the Index byte without the string. When such 8303AML 8304was disassembled, it could not be compiled without modification. Further, 8305the modified code created a resource template with a different size than 8306the 8307original, breaking code that used fixed offsets into the resource 8308template 8309buffer. 8310 8311Removed a recent feature of the disassembler to ignore a lone 8312ResourceIndex 8313byte. This byte is now emitted if present so that the exact AML can be 8314reproduced when the disassembled code is recompiled. 8315 8316Improved comments and text alignment for the resource descriptor code 8317emitted by the disassembler. 8318 8319Implemented disassembler support for the ACPI 3.0 AccessSize field within 8320a 8321Register() resource descriptor. 8322 8323---------------------------------------- 832430 September 2005. Summary of changes for version 20050930: 8325 83261) ACPI CA Core Subsystem: 8327 8328Completed a major overhaul of the Resource Manager code - specifically, 8329optimizations in the area of the AML/internal resource conversion code. 8330The 8331code has been optimized to simplify and eliminate duplicated code, CPU 8332stack 8333use has been decreased by optimizing function parameters and local 8334variables, and naming conventions across the manager have been 8335standardized 8336for clarity and ease of maintenance (this includes function, parameter, 8337variable, and struct/typedef names.) The update may force changes in some 8338driver code, depending on how resources are handled by the host OS. 8339 8340All Resource Manager dispatch and information tables have been moved to a 8341single location for clarity and ease of maintenance. One new file was 8342created, named "rsinfo.c". 8343 8344The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 8345guarantee that the argument is not evaluated twice, making them less 8346prone 8347to macro side-effects. However, since there exists the possibility of 8348additional stack use if a particular compiler cannot optimize them (such 8349as 8350in the debug generation case), the original macros are optionally 8351available. 8352Note that some invocations of the return_VALUE macro may now cause size 8353mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 8354to 8355eliminate these. (From Randy Dunlap) 8356 8357Implemented a new mechanism to enable debug tracing for individual 8358control 8359methods. A new external interface, AcpiDebugTrace, is provided to enable 8360this mechanism. The intent is to allow the host OS to easily enable and 8361disable tracing for problematic control methods. This interface can be 8362easily exposed to a user or debugger interface if desired. See the file 8363psxface.c for details. 8364 8365AcpiUtCallocate will now return a valid pointer if a length of zero is 8366specified - a length of one is used and a warning is issued. This matches 8367the behavior of AcpiUtAllocate. 8368 8369Code and Data Size: The current and previous library sizes for the core 8370subsystem are shown below. These are the code and data sizes for the 8371acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8372These 8373values do not include any ACPI driver or OSPM code. The debug version of 8374the 8375code includes the debug output trace mechanism and has a much larger code 8376and data size. Note that these values will vary depending on the 8377efficiency 8378of the compiler and the compiler options used during generation. 8379 8380 Previous Release: 8381 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 8382 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 8383 Current Release: 8384 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 8385 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 8386 8387 83882) iASL Compiler/Disassembler: 8389 8390A remark is issued if the effective compile-time length of a package or 8391buffer is zero. Previously, this was a warning. 8392 8393---------------------------------------- 839416 September 2005. Summary of changes for version 20050916: 8395 83961) ACPI CA Core Subsystem: 8397 8398Fixed a problem within the Resource Manager where support for the Generic 8399Register descriptor was not fully implemented. This descriptor is now 8400fully 8401recognized, parsed, disassembled, and displayed. 8402 8403Completely restructured the Resource Manager code to utilize table-driven 8404dispatch and lookup, eliminating many of the large switch() statements. 8405This 8406reduces overall subsystem code size and code complexity. Affects the 8407resource parsing and construction, disassembly, and debug dump output. 8408 8409Cleaned up and restructured the debug dump output for all resource 8410descriptors. Improved readability of the output and reduced code size. 8411 8412Fixed a problem where changes to internal data structures caused the 8413optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 8414 8415Code and Data Size: The current and previous library sizes for the core 8416subsystem are shown below. These are the code and data sizes for the 8417acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8418These 8419values do not include any ACPI driver or OSPM code. The debug version of 8420the 8421code includes the debug output trace mechanism and has a much larger code 8422and data size. Note that these values will vary depending on the 8423efficiency 8424of the compiler and the compiler options used during generation. 8425 8426 Previous Release: 8427 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 8428 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 8429 Current Release: 8430 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 8431 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 8432 8433 84342) iASL Compiler/Disassembler: 8435 8436Updated the disassembler to automatically insert an EndDependentFn() 8437macro 8438into the ASL stream if this macro is missing in the original AML code, 8439simplifying compilation of the resulting ASL module. 8440 8441Fixed a problem in the disassembler where a disassembled ResourceSource 8442string (within a large resource descriptor) was not surrounded by quotes 8443and 8444not followed by a comma, causing errors when the resulting ASL module was 8445compiled. Also, escape sequences within a ResourceSource string are now 8446handled correctly (especially "\\") 8447 8448---------------------------------------- 844902 September 2005. Summary of changes for version 20050902: 8450 84511) ACPI CA Core Subsystem: 8452 8453Fixed a problem with the internal Owner ID allocation and deallocation 8454mechanisms for control method execution and recursive method invocation. 8455This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 8456messages seen on some systems. Recursive method invocation depth is 8457currently limited to 255. (Alexey Starikovskiy) 8458 8459Completely eliminated all vestiges of support for the "module-level 8460executable code" until this support is fully implemented and debugged. 8461This 8462should eliminate the NO_RETURN_VALUE exceptions seen during table load on 8463some systems that invoke this support. 8464 8465Fixed a problem within the resource manager code where the transaction 8466flags 8467for a 64-bit address descriptor were handled incorrectly in the type- 8468specific flag byte. 8469 8470Consolidated duplicate code within the address descriptor resource 8471manager 8472code, reducing overall subsystem code size. 8473 8474Fixed a fault when using the AML debugger "disassemble" command to 8475disassemble individual control methods. 8476 8477Removed references to the "release_current" directory within the Unix 8478release package. 8479 8480Code and Data Size: The current and previous core subsystem library sizes 8481are shown below. These are the code and data sizes for the acpica.lib 8482produced by the Microsoft Visual C++ 6.0 compiler. These values do not 8483include any ACPI driver or OSPM code. The debug version of the code 8484includes 8485the debug output trace mechanism and has a much larger code and data 8486size. 8487Note that these values will vary depending on the efficiency of the 8488compiler 8489and the compiler options used during generation. 8490 8491 Previous Release: 8492 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 8493 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 8494 Current Release: 8495 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 8496 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 8497 8498 84992) iASL Compiler/Disassembler: 8500 8501Implemented an error check for illegal duplicate values in the interrupt 8502and 8503dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 8504Interrupt(). 8505 8506Implemented error checking for the Irq() and IrqNoFlags() macros to 8507detect 8508too many values in the interrupt list (16 max) and invalid values in the 8509list (range 0 - 15) 8510 8511The maximum length string literal within an ASL file is now restricted to 8512200 characters as per the ACPI specification. 8513 8514Fixed a fault when using the -ln option (generate namespace listing). 8515 8516Implemented an error check to determine if a DescriptorName within a 8517resource descriptor has already been used within the current scope. 8518 8519---------------------------------------- 852015 August 2005. Summary of changes for version 20050815: 8521 85221) ACPI CA Core Subsystem: 8523 8524Implemented a full bytewise compare to determine if a table load request 8525is 8526attempting to load a duplicate table. The compare is performed if the 8527table 8528signatures and table lengths match. This will allow different tables with 8529the same OEM Table ID and revision to be loaded - probably against the 8530ACPI 8531specification, but discovered in the field nonetheless. 8532 8533Added the changes.txt logfile to each of the zipped release packages. 8534 8535Code and Data Size: Current and previous core subsystem library sizes are 8536shown below. These are the code and data sizes for the acpica.lib 8537produced 8538by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8539any ACPI driver or OSPM code. The debug version of the code includes the 8540debug output trace mechanism and has a much larger code and data size. 8541Note 8542that these values will vary depending on the efficiency of the compiler 8543and 8544the compiler options used during generation. 8545 8546 Previous Release: 8547 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 8548 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 8549 Current Release: 8550 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 8551 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 8552 8553 85542) iASL Compiler/Disassembler: 8555 8556Fixed a problem where incorrect AML code could be generated for Package 8557objects if optimization is disabled (via the -oa switch). 8558 8559Fixed a problem with where incorrect AML code is generated for variable- 8560length packages when the package length is not specified and the number 8561of 8562initializer values is greater than 255. 8563 8564 8565---------------------------------------- 856629 July 2005. Summary of changes for version 20050729: 8567 85681) ACPI CA Core Subsystem: 8569 8570Implemented support to ignore an attempt to install/load a particular 8571ACPI 8572table more than once. Apparently there exists BIOS code that repeatedly 8573attempts to load the same SSDT upon certain events. With assistance from 8574Venkatesh Pallipadi. 8575 8576Restructured the main interface to the AML parser in order to correctly 8577handle all exceptional conditions. This will prevent leakage of the 8578OwnerId 8579resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 8580some 8581machines. With assistance from Alexey Starikovskiy. 8582 8583Support for "module level code" has been disabled in this version due to 8584a 8585number of issues that have appeared on various machines. The support can 8586be 8587enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 8588compilation. When the issues are fully resolved, the code will be enabled 8589by 8590default again. 8591 8592Modified the internal functions for debug print support to define the 8593FunctionName parameter as a (const char *) for compatibility with 8594compiler 8595built-in macros such as __FUNCTION__, etc. 8596 8597Linted the entire ACPICA source tree for both 32-bit and 64-bit. 8598 8599Implemented support to display an object count summary for the AML 8600Debugger 8601commands Object and Methods. 8602 8603Code and Data Size: Current and previous core subsystem library sizes are 8604shown below. These are the code and data sizes for the acpica.lib 8605produced 8606by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8607any ACPI driver or OSPM code. The debug version of the code includes the 8608debug output trace mechanism and has a much larger code and data size. 8609Note 8610that these values will vary depending on the efficiency of the compiler 8611and 8612the compiler options used during generation. 8613 8614 Previous Release: 8615 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 8616 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 8617 Current Release: 8618 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 8619 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 8620 8621 86222) iASL Compiler/Disassembler: 8623 8624Fixed a regression that appeared in the 20050708 version of the compiler 8625where an error message was inadvertently emitted for invocations of the 8626_OSI 8627reserved control method. 8628 8629---------------------------------------- 863008 July 2005. Summary of changes for version 20050708: 8631 86321) ACPI CA Core Subsystem: 8633 8634The use of the CPU stack in the debug version of the subsystem has been 8635considerably reduced. Previously, a debug structure was declared in every 8636function that used the debug macros. This structure has been removed in 8637favor of declaring the individual elements as parameters to the debug 8638functions. This reduces the cumulative stack use during nested execution 8639of 8640ACPI function calls at the cost of a small increase in the code size of 8641the 8642debug version of the subsystem. With assistance from Alexey Starikovskiy 8643and 8644Len Brown. 8645 8646Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 8647headers to define a macro that will return the current function name at 8648runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 8649by 8650the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 8651compiler-dependent header, the function name is saved on the CPU stack 8652(one 8653pointer per function.) This mechanism is used because apparently there 8654exists no standard ANSI-C defined macro that that returns the function 8655name. 8656 8657Redesigned and reimplemented the "Owner ID" mechanism used to track 8658namespace objects created/deleted by ACPI tables and control method 8659execution. A bitmap is now used to allocate and free the IDs, thus 8660solving 8661the wraparound problem present in the previous implementation. The size 8662of 8663the namespace node descriptor was reduced by 2 bytes as a result (Alexey 8664Starikovskiy). 8665 8666Removed the UINT32_BIT and UINT16_BIT types that were used for the 8667bitfield 8668flag definitions within the headers for the predefined ACPI tables. These 8669have been replaced by UINT8_BIT in order to increase the code portability 8670of 8671the subsystem. If the use of UINT8 remains a problem, we may be forced to 8672eliminate bitfields entirely because of a lack of portability. 8673 8674Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 8675This 8676is a frequently used function and this improvement increases the 8677performance 8678of the entire subsystem (Alexey Starikovskiy). 8679 8680Fixed several possible memory leaks and the inverse - premature object 8681deletion (Alexey Starikovskiy). 8682 8683Code and Data Size: Current and previous core subsystem library sizes are 8684shown below. These are the code and data sizes for the acpica.lib 8685produced 8686by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8687any ACPI driver or OSPM code. The debug version of the code includes the 8688debug output trace mechanism and has a much larger code and data size. 8689Note 8690that these values will vary depending on the efficiency of the compiler 8691and 8692the compiler options used during generation. 8693 8694 Previous Release: 8695 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 8696 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 8697 Current Release: 8698 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 8699 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 8700 8701---------------------------------------- 870224 June 2005. Summary of changes for version 20050624: 8703 87041) ACPI CA Core Subsystem: 8705 8706Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 8707the host-defined cache object. This allows the OSL implementation to 8708define 8709and type this object in any manner desired, simplifying the OSL 8710implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 8711Linux, and should be defined in the OS-specific header file for other 8712operating systems as required. 8713 8714Changed the interface to AcpiOsAcquireObject to directly return the 8715requested object as the function return (instead of ACPI_STATUS.) This 8716change was made for performance reasons, since this is the purpose of the 8717interface in the first place. AcpiOsAcquireObject is now similar to the 8718AcpiOsAllocate interface. 8719 8720Implemented a new AML debugger command named Businfo. This command 8721displays 8722information about all devices that have an associate _PRT object. The 8723_ADR, 8724_HID, _UID, and _CID are displayed for these devices. 8725 8726Modified the initialization sequence in AcpiInitializeSubsystem to call 8727the 8728OSL interface AcpiOslInitialize first, before any local initialization. 8729This 8730change was required because the global initialization now calls OSL 8731interfaces. 8732 8733Enhanced the Dump command to display the entire contents of Package 8734objects 8735(including all sub-objects and their values.) 8736 8737Restructured the code base to split some files because of size and/or 8738because the code logically belonged in a separate file. New files are 8739listed 8740below. All makefiles and project files included in the ACPI CA release 8741have 8742been updated. 8743 utilities/utcache.c /* Local cache interfaces */ 8744 utilities/utmutex.c /* Local mutex support */ 8745 utilities/utstate.c /* State object support */ 8746 interpreter/parser/psloop.c /* Main AML parse loop */ 8747 8748Code and Data Size: Current and previous core subsystem library sizes are 8749shown below. These are the code and data sizes for the acpica.lib 8750produced 8751by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8752any ACPI driver or OSPM code. The debug version of the code includes the 8753debug output trace mechanism and has a much larger code and data size. 8754Note 8755that these values will vary depending on the efficiency of the compiler 8756and 8757the compiler options used during generation. 8758 8759 Previous Release: 8760 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 8761 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 8762 Current Release: 8763 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 8764 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 8765 8766 87672) iASL Compiler/Disassembler: 8768 8769Fixed a regression introduced in version 20050513 where the use of a 8770Package 8771object within a Case() statement caused a compile time exception. The 8772original behavior has been restored (a Match() operator is emitted.) 8773 8774---------------------------------------- 877517 June 2005. Summary of changes for version 20050617: 8776 87771) ACPI CA Core Subsystem: 8778 8779Moved the object cache operations into the OS interface layer (OSL) to 8780allow 8781the host OS to handle these operations if desired (for example, the Linux 8782OSL will invoke the slab allocator). This support is optional; the 8783compile 8784time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 8785cache 8786code in the ACPI CA core. The new OSL interfaces are shown below. See 8787utalloc.c for an example implementation, and acpiosxf.h for the exact 8788interface definitions. With assistance from Alexey Starikovskiy. 8789 AcpiOsCreateCache 8790 AcpiOsDeleteCache 8791 AcpiOsPurgeCache 8792 AcpiOsAcquireObject 8793 AcpiOsReleaseObject 8794 8795Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 8796return 8797and restore a flags parameter. This fits better with many OS lock models. 8798Note: the current execution state (interrupt handler or not) is no longer 8799passed to these interfaces. If necessary, the OSL must determine this 8800state 8801by itself, a simple and fast operation. With assistance from Alexey 8802Starikovskiy. 8803 8804Fixed a problem in the ACPI table handling where a valid XSDT was assumed 8805present if the revision of the RSDP was 2 or greater. According to the 8806ACPI 8807specification, the XSDT is optional in all cases, and the table manager 8808therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 8809Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 8810contain 8811only the RSDT. 8812 8813Fixed an interpreter problem with the Mid() operator in the case of an 8814input 8815string where the resulting output string is of zero length. It now 8816correctly 8817returns a valid, null terminated string object instead of a string object 8818with a null pointer. 8819 8820Fixed a problem with the control method argument handling to allow a 8821store 8822to an Arg object that already contains an object of type Device. The 8823Device 8824object is now correctly overwritten. Previously, an error was returned. 8825 8826 8827Enhanced the debugger Find command to emit object values in addition to 8828the 8829found object pathnames. The output format is the same as the dump 8830namespace 8831command. 8832 8833Enhanced the debugger Set command. It now has the ability to set the 8834value 8835of any Named integer object in the namespace (Previously, only method 8836locals 8837and args could be set.) 8838 8839Code and Data Size: Current and previous core subsystem library sizes are 8840shown below. These are the code and data sizes for the acpica.lib 8841produced 8842by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8843any ACPI driver or OSPM code. The debug version of the code includes the 8844debug output trace mechanism and has a much larger code and data size. 8845Note 8846that these values will vary depending on the efficiency of the compiler 8847and 8848the compiler options used during generation. 8849 8850 Previous Release: 8851 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 8852 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 8853 Current Release: 8854 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 8855 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 8856 8857 88582) iASL Compiler/Disassembler: 8859 8860Fixed a regression in the disassembler where if/else/while constructs 8861were 8862output incorrectly. This problem was introduced in the previous release 8863(20050526). This problem also affected the single-step disassembly in the 8864debugger. 8865 8866Fixed a problem where compiling the reserved _OSI method would randomly 8867(but 8868rarely) produce compile errors. 8869 8870Enhanced the disassembler to emit compilable code in the face of 8871incorrect 8872AML resource descriptors. If the optional ResourceSourceIndex is present, 8873but the ResourceSource is not, do not emit the ResourceSourceIndex in the 8874disassembly. Otherwise, the resulting code cannot be compiled without 8875errors. 8876 8877---------------------------------------- 887826 May 2005. Summary of changes for version 20050526: 8879 88801) ACPI CA Core Subsystem: 8881 8882Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 8883the module level (not within a control method.) These opcodes are 8884executed 8885exactly once at the time the table is loaded. This type of code was legal 8886up 8887until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 8888in 8889order to provide backwards compatibility with earlier BIOS 8890implementations. 8891This eliminates the "Encountered executable code at module level" warning 8892that was previously generated upon detection of such code. 8893 8894Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 8895inadvertently be generated during the lookup of namespace objects in the 8896second pass parse of ACPI tables and control methods. It appears that 8897this 8898problem could occur during the resolution of forward references to 8899namespace 8900objects. 8901 8902Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 8903corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 8904allows the deadlock detection debug code to be compiled out in the normal 8905case, improving mutex performance (and overall subsystem performance) 8906considerably. 8907 8908Implemented a handful of miscellaneous fixes for possible memory leaks on 8909error conditions and error handling control paths. These fixes were 8910suggested by FreeBSD and the Coverity Prevent source code analysis tool. 8911 8912Added a check for a null RSDT pointer in AcpiGetFirmwareTable 8913(tbxfroot.c) 8914to prevent a fault in this error case. 8915 8916Code and Data Size: Current and previous core subsystem library sizes are 8917shown below. These are the code and data sizes for the acpica.lib 8918produced 8919by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8920any ACPI driver or OSPM code. The debug version of the code includes the 8921debug output trace mechanism and has a much larger code and data size. 8922Note 8923that these values will vary depending on the efficiency of the compiler 8924and 8925the compiler options used during generation. 8926 8927 Previous Release: 8928 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 8929 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 8930 Current Release: 8931 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 8932 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 8933 8934 89352) iASL Compiler/Disassembler: 8936 8937Implemented support to allow Type 1 and Type 2 ASL operators to appear at 8938the module level (not within a control method.) These operators will be 8939executed once at the time the table is loaded. This type of code was 8940legal 8941up until the release of ACPI 2.0B (2002) and is now supported by the iASL 8942compiler in order to provide backwards compatibility with earlier BIOS 8943ASL 8944code. 8945 8946The ACPI integer width (specified via the table revision ID or the -r 8947override, 32 or 64 bits) is now used internally during compile-time 8948constant 8949folding to ensure that constants are truncated to 32 bits if necessary. 8950Previously, the revision ID value was only emitted in the AML table 8951header. 8952 8953An error message is now generated for the Mutex and Method operators if 8954the 8955SyncLevel parameter is outside the legal range of 0 through 15. 8956 8957Fixed a problem with the Method operator ParameterTypes list handling 8958(ACPI 89593.0). Previously, more than 2 types or 2 arguments generated a syntax 8960error. 8961The actual underlying implementation of method argument typechecking is 8962still under development, however. 8963 8964---------------------------------------- 896513 May 2005. Summary of changes for version 20050513: 8966 89671) ACPI CA Core Subsystem: 8968 8969Implemented support for PCI Express root bridges -- added support for 8970device 8971PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 8972 8973The interpreter now automatically truncates incoming 64-bit constants to 897432 8975bits if currently executing out of a 32-bit ACPI table (Revision < 2). 8976This 8977also affects the iASL compiler constant folding. (Note: as per below, the 8978iASL compiler no longer allows 64-bit constants within 32-bit tables.) 8979 8980Fixed a problem where string and buffer objects with "static" pointers 8981(pointers to initialization data within an ACPI table) were not handled 8982consistently. The internal object copy operation now always copies the 8983data 8984to a newly allocated buffer, regardless of whether the source object is 8985static or not. 8986 8987Fixed a problem with the FromBCD operator where an implicit result 8988conversion was improperly performed while storing the result to the 8989target 8990operand. Since this is an "explicit conversion" operator, the implicit 8991conversion should never be performed on the output. 8992 8993Fixed a problem with the CopyObject operator where a copy to an existing 8994named object did not always completely overwrite the existing object 8995stored 8996at name. Specifically, a buffer-to-buffer copy did not delete the 8997existing 8998buffer. 8999 9000Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 9001and 9002structs for consistency. 9003 9004Code and Data Size: Current and previous core subsystem library sizes are 9005shown below. These are the code and data sizes for the acpica.lib 9006produced 9007by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9008any ACPI driver or OSPM code. The debug version of the code includes the 9009debug output trace mechanism and has a much larger code and data size. 9010Note 9011that these values will vary depending on the efficiency of the compiler 9012and 9013the compiler options used during generation. 9014 9015 Previous Release: 9016 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9017 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9018 Current Release: (Same sizes) 9019 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9020 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9021 9022 90232) iASL Compiler/Disassembler: 9024 9025The compiler now emits a warning if an attempt is made to generate a 64- 9026bit 9027integer constant from within a 32-bit ACPI table (Revision < 2). The 9028integer 9029is truncated to 32 bits. 9030 9031Fixed a problem with large package objects: if the static length of the 9032package is greater than 255, the "variable length package" opcode is 9033emitted. Previously, this caused an error. This requires an update to the 9034ACPI spec, since it currently (incorrectly) states that packages larger 9035than 9036255 elements are not allowed. 9037 9038The disassembler now correctly handles variable length packages and 9039packages 9040larger than 255 elements. 9041 9042---------------------------------------- 904308 April 2005. Summary of changes for version 20050408: 9044 90451) ACPI CA Core Subsystem: 9046 9047Fixed three cases in the interpreter where an "index" argument to an ASL 9048function was still (internally) 32 bits instead of the required 64 bits. 9049This was the Index argument to the Index, Mid, and Match operators. 9050 9051The "strupr" function is now permanently local (AcpiUtStrupr), since this 9052is 9053not a POSIX-defined function and not present in most kernel-level C 9054libraries. All references to the C library strupr function have been 9055removed 9056from the headers. 9057 9058Completed the deployment of static functions/prototypes. All prototypes 9059with 9060the static attribute have been moved from the headers to the owning C 9061file. 9062 9063Implemented an extract option (-e) for the AcpiBin utility (AML binary 9064utility). This option allows the utility to extract individual ACPI 9065tables 9066from the output of AcpiDmp. It provides the same functionality of the 9067acpixtract.pl perl script without the worry of setting the correct perl 9068options. AcpiBin runs on Windows and has not yet been generated/validated 9069in 9070the Linux/Unix environment (but should be soon). 9071 9072Updated and fixed the table dump option for AcpiBin (-d). This option 9073converts a single ACPI table to a hex/ascii file, similar to the output 9074of 9075AcpiDmp. 9076 9077Code and Data Size: Current and previous core subsystem library sizes are 9078shown below. These are the code and data sizes for the acpica.lib 9079produced 9080by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9081any ACPI driver or OSPM code. The debug version of the code includes the 9082debug output trace mechanism and has a much larger code and data size. 9083Note 9084that these values will vary depending on the efficiency of the compiler 9085and 9086the compiler options used during generation. 9087 9088 Previous Release: 9089 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9090 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9091 Current Release: 9092 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 9093 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 9094 9095 90962) iASL Compiler/Disassembler: 9097 9098Disassembler fix: Added a check to ensure that the table length found in 9099the 9100ACPI table header within the input file is not longer than the actual 9101input 9102file size. This indicates some kind of file or table corruption. 9103 9104---------------------------------------- 910529 March 2005. Summary of changes for version 20050329: 9106 91071) ACPI CA Core Subsystem: 9108 9109An error is now generated if an attempt is made to create a Buffer Field 9110of 9111length zero (A CreateField with a length operand of zero.) 9112 9113The interpreter now issues a warning whenever executable code at the 9114module 9115level is detected during ACPI table load. This will give some idea of the 9116prevalence of this type of code. 9117 9118Implemented support for references to named objects (other than control 9119methods) within package objects. 9120 9121Enhanced package object output for the debug object. Package objects are 9122now 9123completely dumped, showing all elements. 9124 9125Enhanced miscellaneous object output for the debug object. Any object can 9126now be written to the debug object (for example, a device object can be 9127written, and the type of the object will be displayed.) 9128 9129The "static" qualifier has been added to all local functions across both 9130the 9131core subsystem and the iASL compiler. 9132 9133The number of "long" lines (> 80 chars) within the source has been 9134significantly reduced, by about 1/3. 9135 9136Cleaned up all header files to ensure that all CA/iASL functions are 9137prototyped (even static functions) and the formatting is consistent. 9138 9139Two new header files have been added, acopcode.h and acnames.h. 9140 9141Removed several obsolete functions that were no longer used. 9142 9143Code and Data Size: Current and previous core subsystem library sizes are 9144shown below. These are the code and data sizes for the acpica.lib 9145produced 9146by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9147any ACPI driver or OSPM code. The debug version of the code includes the 9148debug output trace mechanism and has a much larger code and data size. 9149Note 9150that these values will vary depending on the efficiency of the compiler 9151and 9152the compiler options used during generation. 9153 9154 Previous Release: 9155 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9156 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9157 Current Release: 9158 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 9159 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 9160 9161 9162 91632) iASL Compiler/Disassembler: 9164 9165Fixed a problem with the resource descriptor generation/support. For the 9166ResourceSourceIndex and the ResourceSource fields, both must be present, 9167or 9168both must be not present - can't have one without the other. 9169 9170The compiler now returns non-zero from the main procedure if any errors 9171have 9172occurred during the compilation. 9173 9174 9175---------------------------------------- 917609 March 2005. Summary of changes for version 20050309: 9177 91781) ACPI CA Core Subsystem: 9179 9180The string-to-buffer implicit conversion code has been modified again 9181after 9182a change to the ACPI specification. In order to match the behavior of 9183the 9184other major ACPI implementation, the target buffer is no longer truncated 9185if 9186the source string is smaller than an existing target buffer. This change 9187requires an update to the ACPI spec, and should eliminate the recent 9188AE_AML_BUFFER_LIMIT issues. 9189 9190The "implicit return" support was rewritten to a new algorithm that 9191solves 9192the general case. Rather than attempt to determine when a method is about 9193to 9194exit, the result of every ASL operator is saved momentarily until the 9195very 9196next ASL operator is executed. Therefore, no matter how the method exits, 9197there will always be a saved implicit return value. This feature is only 9198enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 9199eliminate 9200AE_AML_NO_RETURN_VALUE errors when enabled. 9201 9202Implemented implicit conversion support for the predicate (operand) of 9203the 9204If, Else, and While operators. String and Buffer arguments are 9205automatically 9206converted to Integers. 9207 9208Changed the string-to-integer conversion behavior to match the new ACPI 9209errata: "If no integer object exists, a new integer is created. The ASCII 9210string is interpreted as a hexadecimal constant. Each string character is 9211interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 9212with the first character as the most significant digit, and ending with 9213the 9214first non-hexadecimal character or end-of-string." This means that the 9215first 9216non-hex character terminates the conversion and this is the code that was 9217changed. 9218 9219Fixed a problem where the ObjectType operator would fail (fault) when 9220used 9221on an Index of a Package which pointed to a null package element. The 9222operator now properly returns zero (Uninitialized) in this case. 9223 9224Fixed a problem where the While operator used excessive memory by not 9225properly popping the result stack during execution. There was no memory 9226leak 9227after execution, however. (Code provided by Valery Podrezov.) 9228 9229Fixed a problem where references to control methods within Package 9230objects 9231caused the method to be invoked, instead of producing a reference object 9232pointing to the method. 9233 9234Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 9235to 9236improve performance and reduce code size. (Code provided by Alexey 9237Starikovskiy.) 9238 9239Code and Data Size: Current and previous core subsystem library sizes are 9240shown below. These are the code and data sizes for the acpica.lib 9241produced 9242by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9243any ACPI driver or OSPM code. The debug version of the code includes the 9244debug output trace mechanism and has a much larger code and data size. 9245Note 9246that these values will vary depending on the efficiency of the compiler 9247and 9248the compiler options used during generation. 9249 9250 Previous Release: 9251 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9252 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 9253 Current Release: 9254 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9255 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 9256 9257 92582) iASL Compiler/Disassembler: 9259 9260Fixed a problem with the Return operator with no arguments. Since the AML 9261grammar for the byte encoding requires an operand for the Return opcode, 9262the 9263compiler now emits a Return(Zero) for this case. An ACPI specification 9264update has been written for this case. 9265 9266For tables other than the DSDT, namepath optimization is automatically 9267disabled. This is because SSDTs can be loaded anywhere in the namespace, 9268the 9269compiler has no knowledge of where, and thus cannot optimize namepaths. 9270 9271Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 9272inadvertently omitted from the ACPI specification, and will require an 9273update to the spec. 9274 9275The source file scan for ASCII characters is now optional (-a). This 9276change 9277was made because some vendors place non-ascii characters within comments. 9278However, the scan is simply a brute-force byte compare to ensure all 9279characters in the file are in the range 0x00 to 0x7F. 9280 9281Fixed a problem with the CondRefOf operator where the compiler was 9282inappropriately checking for the existence of the target. Since the point 9283of 9284the operator is to check for the existence of the target at run-time, the 9285compiler no longer checks for the target existence. 9286 9287Fixed a problem where errors generated from the internal AML interpreter 9288during constant folding were not handled properly, causing a fault. 9289 9290Fixed a problem with overly aggressive range checking for the Stall 9291operator. The valid range (max 255) is now only checked if the operand is 9292of 9293type Integer. All other operand types cannot be statically checked. 9294 9295Fixed a problem where control method references within the RefOf, 9296DeRefOf, 9297and ObjectType operators were not treated properly. They are now treated 9298as 9299actual references, not method invocations. 9300 9301Fixed and enhanced the "list namespace" option (-ln). This option was 9302broken 9303a number of releases ago. 9304 9305Improved error handling for the Field, IndexField, and BankField 9306operators. 9307The compiler now cleanly reports and recovers from errors in the field 9308component (FieldUnit) list. 9309 9310Fixed a disassembler problem where the optional ResourceDescriptor fields 9311TRS and TTP were not always handled correctly. 9312 9313Disassembler - Comments in output now use "//" instead of "/*" 9314 9315---------------------------------------- 931628 February 2005. Summary of changes for version 20050228: 9317 93181) ACPI CA Core Subsystem: 9319 9320Fixed a problem where the result of an Index() operator (an object 9321reference) must increment the reference count on the target object for 9322the 9323life of the object reference. 9324 9325Implemented AML Interpreter and Debugger support for the new ACPI 3.0 9326Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 9327WordSpace 9328resource descriptors. 9329 9330Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 9331Space Descriptor" string, indicating interpreter support for the 9332descriptors 9333above. 9334 9335Implemented header support for the new ACPI 3.0 FADT flag bits. 9336 9337Implemented header support for the new ACPI 3.0 PCI Express bits for the 9338PM1 9339status/enable registers. 9340 9341Updated header support for the MADT processor local Apic struct and MADT 9342platform interrupt source struct for new ACPI 3.0 fields. 9343 9344Implemented header support for the SRAT and SLIT ACPI tables. 9345 9346Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 9347flag 9348at runtime. 9349 9350Code and Data Size: Current and previous core subsystem library sizes are 9351shown below. These are the code and data sizes for the acpica.lib 9352produced 9353by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9354any ACPI driver or OSPM code. The debug version of the code includes the 9355debug output trace mechanism and has a much larger code and data size. 9356Note 9357that these values will vary depending on the efficiency of the compiler 9358and 9359the compiler options used during generation. 9360 9361 Previous Release: 9362 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 9363 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 9364 Current Release: 9365 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9366 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 9367 9368 93692) iASL Compiler/Disassembler: 9370 9371Fixed a problem with the internal 64-bit String-to-integer conversion 9372with 9373strings less than two characters long. 9374 9375Fixed a problem with constant folding where the result of the Index() 9376operator can not be considered a constant. This means that Index() cannot 9377be 9378a type3 opcode and this will require an update to the ACPI specification. 9379 9380Disassembler: Implemented support for the TTP, MTP, and TRS resource 9381descriptor fields. These fields were inadvertently ignored and not output 9382in 9383the disassembly of the resource descriptor. 9384 9385 9386 ---------------------------------------- 938711 February 2005. Summary of changes for version 20050211: 9388 93891) ACPI CA Core Subsystem: 9390 9391Implemented ACPI 3.0 support for implicit conversion within the Match() 9392operator. MatchObjects can now be of type integer, buffer, or string 9393instead 9394of just type integer. Package elements are implicitly converted to the 9395type 9396of the MatchObject. This change aligns the behavior of Match() with the 9397behavior of the other logical operators (LLess(), etc.) It also requires 9398an 9399errata change to the ACPI specification as this support was intended for 9400ACPI 3.0, but was inadvertently omitted. 9401 9402Fixed a problem with the internal implicit "to buffer" conversion. 9403Strings 9404that are converted to buffers will cause buffer truncation if the string 9405is 9406smaller than the target buffer. Integers that are converted to buffers 9407will 9408not cause buffer truncation, only zero extension (both as per the ACPI 9409spec.) The problem was introduced when code was added to truncate the 9410buffer, but this should not be performed in all cases, only the string 9411case. 9412 9413Fixed a problem with the Buffer and Package operators where the 9414interpreter 9415would get confused if two such operators were used as operands to an ASL 9416operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 9417stack was not being popped after the execution of these operators, 9418resulting 9419in an AE_NO_RETURN_VALUE exception. 9420 9421Fixed a problem with constructs of the form Store(Index(...),...). The 9422reference object returned from Index was inadvertently resolved to an 9423actual 9424value. This problem was introduced in version 20050114 when the behavior 9425of 9426Store() was modified to restrict the object types that can be used as the 9427source operand (to match the ACPI specification.) 9428 9429Reduced excessive stack use within the AcpiGetObjectInfo procedure. 9430 9431Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 9432 9433Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 9434 9435Code and Data Size: Current and previous core subsystem library sizes are 9436shown below. These are the code and data sizes for the acpica.lib 9437produced 9438by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9439any ACPI driver or OSPM code. The debug version of the code includes the 9440debug output trace mechanism and has a much larger code and data size. 9441Note 9442that these values will vary depending on the efficiency of the compiler 9443and 9444the compiler options used during generation. 9445 9446 Previous Release: 9447 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 9448 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 9449 Current Release: 9450 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 9451 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 9452 9453 94542) iASL Compiler/Disassembler: 9455 9456Fixed a code generation problem in the constant folding optimization code 9457where incorrect code was generated if a constant was reduced to a buffer 9458object (i.e., a reduced type 5 opcode.) 9459 9460Fixed a typechecking problem for the ToBuffer operator. Caused by an 9461incorrect return type in the internal opcode information table. 9462 9463---------------------------------------- 946425 January 2005. Summary of changes for version 20050125: 9465 94661) ACPI CA Core Subsystem: 9467 9468Fixed a recently introduced problem with the Global Lock where the 9469underlying semaphore was not created. This problem was introduced in 9470version 20050114, and caused an AE_AML_NO_OPERAND exception during an 9471Acquire() operation on _GL. 9472 9473The local object cache is now optional, and is disabled by default. Both 9474AcpiExec and the iASL compiler enable the cache because they run in user 9475mode and this enhances their performance. #define 9476ACPI_ENABLE_OBJECT_CACHE 9477to enable the local cache. 9478 9479Fixed an issue in the internal function AcpiUtEvaluateObject concerning 9480the 9481optional "implicit return" support where an error was returned if no 9482return 9483object was expected, but one was implicitly returned. AE_OK is now 9484returned 9485in this case and the implicitly returned object is deleted. 9486AcpiUtEvaluateObject is only occasionally used, and only to execute 9487reserved 9488methods such as _STA and _INI where the return type is known up front. 9489 9490Fixed a few issues with the internal convert-to-integer code. It now 9491returns 9492an error if an attempt is made to convert a null string, a string of only 9493blanks/tabs, or a zero-length buffer. This affects both implicit 9494conversion 9495and explicit conversion via the ToInteger() operator. 9496 9497The internal debug code in AcpiUtAcquireMutex has been commented out. It 9498is 9499not needed for normal operation and should increase the performance of 9500the 9501entire subsystem. The code remains in case it is needed for debug 9502purposes 9503again. 9504 9505The AcpiExec source and makefile are included in the Unix/Linux package 9506for 9507the first time. 9508 9509Code and Data Size: Current and previous core subsystem library sizes are 9510shown below. These are the code and data sizes for the acpica.lib 9511produced 9512by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9513any ACPI driver or OSPM code. The debug version of the code includes the 9514debug output trace mechanism and has a much larger code and data size. 9515Note 9516that these values will vary depending on the efficiency of the compiler 9517and 9518the compiler options used during generation. 9519 9520 Previous Release: 9521 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 9522 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 9523 Current Release: 9524 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 9525 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 9526 95272) iASL Compiler/Disassembler: 9528 9529Switch/Case support: A warning is now issued if the type of the Switch 9530value 9531cannot be determined at compile time. For example, Switch(Arg0) will 9532generate the warning, and the type is assumed to be an integer. As per 9533the 9534ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 9535the 9536warning. 9537 9538Switch/Case support: Implemented support for buffer and string objects as 9539the switch value. This is an ACPI 3.0 feature, now that LEqual supports 9540buffers and strings. 9541 9542Switch/Case support: The emitted code for the LEqual() comparisons now 9543uses 9544the switch value as the first operand, not the second. The case value is 9545now 9546the second operand, and this allows the case value to be implicitly 9547converted to the type of the switch value, not the other way around. 9548 9549Switch/Case support: Temporary variables are now emitted immediately 9550within 9551the control method, not at the global level. This means that there are 9552now 955336 temps available per-method, not 36 temps per-module as was the case 9554with 9555the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 9556 9557---------------------------------------- 955814 January 2005. Summary of changes for version 20050114: 9559 9560Added 2005 copyright to all module headers. This affects every module in 9561the core subsystem, iASL compiler, and the utilities. 9562 95631) ACPI CA Core Subsystem: 9564 9565Fixed an issue with the String-to-Buffer conversion code where the string 9566null terminator was not included in the buffer after conversion, but 9567there 9568is existing ASL that assumes the string null terminator is included. This 9569is 9570the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 9571introduced in the previous version when the code was updated to correctly 9572set the converted buffer size as per the ACPI specification. The ACPI 9573spec 9574is ambiguous and will be updated to specify that the null terminator must 9575be 9576included in the converted buffer. This also affects the ToBuffer() ASL 9577operator. 9578 9579Fixed a problem with the Mid() ASL/AML operator where it did not work 9580correctly on Buffer objects. Newly created sub-buffers were not being 9581marked 9582as initialized. 9583 9584 9585Fixed a problem in AcpiTbFindTable where incorrect string compares were 9586performed on the OemId and OemTableId table header fields. These fields 9587are 9588not null terminated, so strncmp is now used instead of strcmp. 9589 9590Implemented a restriction on the Store() ASL/AML operator to align the 9591behavior with the ACPI specification. Previously, any object could be 9592used 9593as the source operand. Now, the only objects that may be used are 9594Integers, 9595Buffers, Strings, Packages, Object References, and DDB Handles. If 9596necessary, the original behavior can be restored by enabling the 9597EnableInterpreterSlack flag. 9598 9599Enhanced the optional "implicit return" support to allow an implicit 9600return 9601value from methods that are invoked externally via the AcpiEvaluateObject 9602interface. This enables implicit returns from the _STA and _INI methods, 9603for example. 9604 9605Changed the Revision() ASL/AML operator to return the current version of 9606the 9607AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 9608returned 9609the supported ACPI version (This is the function of the _REV method). 9610 9611Updated the _REV predefined method to return the currently supported 9612version 9613of ACPI, now 3. 9614 9615Implemented batch mode option for the AcpiExec utility (-b). 9616 9617Code and Data Size: Current and previous core subsystem library sizes are 9618shown below. These are the code and data sizes for the acpica.lib 9619produced 9620by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9621any ACPI driver or OSPM code. The debug version of the code includes the 9622debug output trace mechanism and has a much larger code and data size. 9623Note 9624that these values will vary depending on the efficiency of the compiler 9625and 9626the compiler options used during generation. 9627 9628 Previous Release: 9629 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9630 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 9631 Current Release: 9632 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 9633 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 9634 9635---------------------------------------- 963610 December 2004. Summary of changes for version 20041210: 9637 9638ACPI 3.0 support is nearing completion in both the iASL compiler and the 9639ACPI CA core subsystem. 9640 96411) ACPI CA Core Subsystem: 9642 9643Fixed a problem in the ToDecimalString operator where the resulting 9644string 9645length was incorrectly calculated. The length is now calculated exactly, 9646eliminating incorrect AE_STRING_LIMIT exceptions. 9647 9648Fixed a problem in the ToHexString operator to allow a maximum 200 9649character 9650string to be produced. 9651 9652Fixed a problem in the internal string-to-buffer and buffer-to-buffer 9653copy 9654routine where the length of the resulting buffer was not truncated to the 9655new size (if the target buffer already existed). 9656 9657Code and Data Size: Current and previous core subsystem library sizes are 9658shown below. These are the code and data sizes for the acpica.lib 9659produced 9660by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9661any ACPI driver or OSPM code. The debug version of the code includes the 9662debug output trace mechanism and has a much larger code and data size. 9663Note 9664that these values will vary depending on the efficiency of the compiler 9665and 9666the compiler options used during generation. 9667 9668 Previous Release: 9669 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9670 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 9671 Current Release: 9672 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9673 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 9674 9675 96762) iASL Compiler/Disassembler: 9677 9678Implemented the new ACPI 3.0 resource template macros - DWordSpace, 9679ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 9680Includes support in the disassembler. 9681 9682Implemented support for the new (ACPI 3.0) parameter to the Register 9683macro, 9684AccessSize. 9685 9686Fixed a problem where the _HE resource name for the Interrupt macro was 9687referencing bit 0 instead of bit 1. 9688 9689Implemented check for maximum 255 interrupts in the Interrupt macro. 9690 9691Fixed a problem with the predefined resource descriptor names where 9692incorrect AML code was generated if the offset within the resource buffer 9693was 0 or 1. The optimizer shortened the AML code to a single byte opcode 9694but did not update the surrounding package lengths. 9695 9696Changes to the Dma macro: All channels within the channel list must be 9697in 9698the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 9699optional (default is BusMaster). 9700 9701Implemented check for maximum 7 data bytes for the VendorShort macro. 9702 9703The ReadWrite parameter is now optional for the Memory32 and similar 9704macros. 9705 9706---------------------------------------- 970703 December 2004. Summary of changes for version 20041203: 9708 97091) ACPI CA Core Subsystem: 9710 9711The low-level field insertion/extraction code (exfldio) has been 9712completely 9713rewritten to eliminate unnecessary complexity, bugs, and boundary 9714conditions. 9715 9716Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 9717ToDecimalString 9718operators where the input operand could be inadvertently deleted if no 9719conversion was necessary (e.g., if the input to ToInteger was an Integer 9720object.) 9721 9722Fixed a problem with the ToDecimalString and ToHexString where an 9723incorrect 9724exception code was returned if the resulting string would be > 200 chars. 9725AE_STRING_LIMIT is now returned. 9726 9727Fixed a problem with the Concatenate operator where AE_OK was always 9728returned, even if the operation failed. 9729 9730Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 9731semaphores to be allocated. 9732 9733Code and Data Size: Current and previous core subsystem library sizes are 9734shown below. These are the code and data sizes for the acpica.lib 9735produced 9736by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9737any ACPI driver or OSPM code. The debug version of the code includes the 9738debug output trace mechanism and has a much larger code and data size. 9739Note 9740that these values will vary depending on the efficiency of the compiler 9741and 9742the compiler options used during generation. 9743 9744 Previous Release: 9745 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 9746 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 9747 Current Release: 9748 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 9749 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 9750 9751 97522) iASL Compiler/Disassembler: 9753 9754Fixed typechecking for the ObjectType and SizeOf operators. Problem was 9755recently introduced in 20041119. 9756 9757Fixed a problem with the ToUUID macro where the upper nybble of each 9758buffer 9759byte was inadvertently set to zero. 9760 9761---------------------------------------- 976219 November 2004. Summary of changes for version 20041119: 9763 97641) ACPI CA Core Subsystem: 9765 9766Fixed a problem in the internal ConvertToInteger routine where new 9767integers 9768were not truncated to 32 bits for 32-bit ACPI tables. This routine 9769converts 9770buffers and strings to integers. 9771 9772Implemented support to store a value to an Index() on a String object. 9773This 9774is an ACPI 2.0 feature that had not yet been implemented. 9775 9776Implemented new behavior for storing objects to individual package 9777elements 9778(via the Index() operator). The previous behavior was to invoke the 9779implicit 9780conversion rules if an object was already present at the index. The new 9781behavior is to simply delete any existing object and directly store the 9782new 9783object. Although the ACPI specification seems unclear on this subject, 9784other 9785ACPI implementations behave in this manner. (This is the root of the 9786AE_BAD_HEX_CONSTANT issue.) 9787 9788Modified the RSDP memory scan mechanism to support the extended checksum 9789for 9790ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 9791RSDP signature is found with a valid checksum. 9792 9793Code and Data Size: Current and previous core subsystem library sizes are 9794shown below. These are the code and data sizes for the acpica.lib 9795produced 9796by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9797any ACPI driver or OSPM code. The debug version of the code includes the 9798debug output trace mechanism and has a much larger code and data size. 9799Note 9800that these values will vary depending on the efficiency of the compiler 9801and 9802the compiler options used during generation. 9803 9804 Previous Release: 9805 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 9806 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 9807 Current Release: 9808 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 9809 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 9810 9811 98122) iASL Compiler/Disassembler: 9813 9814Fixed a missing semicolon in the aslcompiler.y file. 9815 9816---------------------------------------- 981705 November 2004. Summary of changes for version 20041105: 9818 98191) ACPI CA Core Subsystem: 9820 9821Implemented support for FADT revision 2. This was an interim table 9822(between 9823ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 9824 9825Implemented optional support to allow uninitialized LocalX and ArgX 9826variables in a control method. The variables are initialized to an 9827Integer 9828object with a value of zero. This support is enabled by setting the 9829AcpiGbl_EnableInterpreterSlack flag to TRUE. 9830 9831Implemented support for Integer objects for the SizeOf operator. Either 98324 9833or 8 is returned, depending on the current integer size (32-bit or 64- 9834bit, 9835depending on the parent table revision). 9836 9837Fixed a problem in the implementation of the SizeOf and ObjectType 9838operators 9839where the operand was resolved to a value too early, causing incorrect 9840return values for some objects. 9841 9842Fixed some possible memory leaks during exceptional conditions. 9843 9844Code and Data Size: Current and previous core subsystem library sizes are 9845shown below. These are the code and data sizes for the acpica.lib 9846produced 9847by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9848any ACPI driver or OSPM code. The debug version of the code includes the 9849debug output trace mechanism and has a much larger code and data size. 9850Note 9851that these values will vary depending on the efficiency of the compiler 9852and 9853the compiler options used during generation. 9854 9855 Previous Release: 9856 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 9857 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 9858 Current Release: 9859 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 9860 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 9861 9862 98632) iASL Compiler/Disassembler: 9864 9865Implemented support for all ACPI 3.0 reserved names and methods. 9866 9867Implemented all ACPI 3.0 grammar elements in the front-end, including 9868support for semicolons. 9869 9870Implemented the ACPI 3.0 Function() and ToUUID() macros 9871 9872Fixed a problem in the disassembler where a Scope() operator would not be 9873emitted properly if the target of the scope was in another table. 9874 9875---------------------------------------- 987615 October 2004. Summary of changes for version 20041015: 9877 9878Note: ACPI CA is currently undergoing an in-depth and complete formal 9879evaluation to test/verify the following areas. Other suggestions are 9880welcome. This will result in an increase in the frequency of releases and 9881the number of bug fixes in the next few months. 9882 - Functional tests for all ASL/AML operators 9883 - All implicit/explicit type conversions 9884 - Bit fields and operation regions 9885 - 64-bit math support and 32-bit-only "truncated" math support 9886 - Exceptional conditions, both compiler and interpreter 9887 - Dynamic object deletion and memory leaks 9888 - ACPI 3.0 support when implemented 9889 - External interfaces to the ACPI subsystem 9890 9891 98921) ACPI CA Core Subsystem: 9893 9894Fixed two alignment issues on 64-bit platforms - within debug statements 9895in 9896AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 9897Address 9898field within the non-aligned ACPI generic address structure. 9899 9900Fixed a problem in the Increment and Decrement operators where incorrect 9901operand resolution could result in the inadvertent modification of the 9902original integer when the integer is passed into another method as an 9903argument and the arg is then incremented/decremented. 9904 9905Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 9906bit 9907BCD number were truncated during conversion. 9908 9909Fixed a problem in the ToDecimal operator where the length of the 9910resulting 9911string could be set incorrectly too long if the input operand was a 9912Buffer 9913object. 9914 9915Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 9916(0) 9917within a buffer would prematurely terminate a compare between buffer 9918objects. 9919 9920Added a check for string overflow (>200 characters as per the ACPI 9921specification) during the Concatenate operator with two string operands. 9922 9923Code and Data Size: Current and previous core subsystem library sizes are 9924shown below. These are the code and data sizes for the acpica.lib 9925produced 9926by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9927any ACPI driver or OSPM code. The debug version of the code includes the 9928debug output trace mechanism and has a much larger code and data size. 9929Note 9930that these values will vary depending on the efficiency of the compiler 9931and 9932the compiler options used during generation. 9933 9934 Previous Release: 9935 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 9936 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 9937 Current Release: 9938 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 9939 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 9940 9941 9942 99432) iASL Compiler/Disassembler: 9944 9945Allow the use of the ObjectType operator on uninitialized Locals and Args 9946(returns 0 as per the ACPI specification). 9947 9948Fixed a problem where the compiler would fault if there was a syntax 9949error 9950in the FieldName of all of the various CreateXXXField operators. 9951 9952Disallow the use of lower case letters within the EISAID macro, as per 9953the 9954ACPI specification. All EISAID strings must be of the form "UUUNNNN" 9955Where 9956U is an uppercase letter and N is a hex digit. 9957 9958 9959---------------------------------------- 996006 October 2004. Summary of changes for version 20041006: 9961 99621) ACPI CA Core Subsystem: 9963 9964Implemented support for the ACPI 3.0 Timer operator. This ASL function 9965implements a 64-bit timer with 100 nanosecond granularity. 9966 9967Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 9968implement the ACPI 3.0 Timer operator. This allows the host OS to 9969implement 9970the timer with the best clock available. Also, it keeps the core 9971subsystem 9972out of the clock handling business, since the host OS (usually) performs 9973this function. 9974 9975Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 9976functions use a 64-bit address which is part of the packed ACPI Generic 9977Address Structure. Since the structure is non-aligned, the alignment 9978macros 9979are now used to extract the address to a local variable before use. 9980 9981Fixed a problem where the ToInteger operator assumed all input strings 9982were 9983hexadecimal. The operator now handles both decimal strings and hex 9984strings 9985(prefixed with "0x"). 9986 9987Fixed a problem where the string length in the string object created as a 9988result of the internal ConvertToString procedure could be incorrect. This 9989potentially affected all implicit conversions and also the 9990ToDecimalString 9991and ToHexString operators. 9992 9993Fixed two problems in the ToString operator. If the length parameter was 9994zero, an incorrect string object was created and the value of the input 9995length parameter was inadvertently changed from zero to Ones. 9996 9997Fixed a problem where the optional ResourceSource string in the 9998ExtendedIRQ 9999resource macro was ignored. 10000 10001Simplified the interfaces to the internal division functions, reducing 10002code 10003size and complexity. 10004 10005Code and Data Size: Current and previous core subsystem library sizes are 10006shown below. These are the code and data sizes for the acpica.lib 10007produced 10008by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10009any ACPI driver or OSPM code. The debug version of the code includes the 10010debug output trace mechanism and has a much larger code and data size. 10011Note 10012that these values will vary depending on the efficiency of the compiler 10013and 10014the compiler options used during generation. 10015 10016 Previous Release: 10017 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10018 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10019 Current Release: 10020 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10021 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 10022 10023 100242) iASL Compiler/Disassembler: 10025 10026Implemented support for the ACPI 3.0 Timer operator. 10027 10028Fixed a problem where the Default() operator was inadvertently ignored in 10029a 10030Switch/Case block. This was a problem in the translation of the Switch 10031statement to If...Else pairs. 10032 10033Added support to allow a standalone Return operator, with no parentheses 10034(or 10035operands). 10036 10037Fixed a problem with code generation for the ElseIf operator where the 10038translated Else...If parse tree was improperly constructed leading to the 10039loss of some code. 10040 10041---------------------------------------- 1004222 September 2004. Summary of changes for version 20040922: 10043 100441) ACPI CA Core Subsystem: 10045 10046Fixed a problem with the implementation of the LNot() operator where 10047"Ones" 10048was not returned for the TRUE case. Changed the code to return Ones 10049instead 10050of (!Arg) which was usually 1. This change affects iASL constant folding 10051for 10052this operator also. 10053 10054Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 10055not 10056initialized properly -- Now zero the entire buffer in this case where the 10057buffer already exists. 10058 10059Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 10060Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 10061related code considerably. This will require changes/updates to all OS 10062interface layers (OSLs.) 10063 10064Implemented a new external interface, AcpiInstallExceptionHandler, to 10065allow 10066a system exception handler to be installed. This handler is invoked upon 10067any 10068run-time exception that occurs during control method execution. 10069 10070Added support for the DSDT in AcpiTbFindTable. This allows the 10071DataTableRegion() operator to access the local copy of the DSDT. 10072 10073Code and Data Size: Current and previous core subsystem library sizes are 10074shown below. These are the code and data sizes for the acpica.lib 10075produced 10076by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10077any ACPI driver or OSPM code. The debug version of the code includes the 10078debug output trace mechanism and has a much larger code and data size. 10079Note 10080that these values will vary depending on the efficiency of the compiler 10081and 10082the compiler options used during generation. 10083 10084 Previous Release: 10085 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10086 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10087 Current Release: 10088 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 10089 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 10090 10091 100922) iASL Compiler/Disassembler: 10093 10094Fixed a problem with constant folding and the LNot operator. LNot was 10095returning 1 in the TRUE case, not Ones as per the ACPI specification. 10096This 10097could result in the generation of an incorrect folded/reduced constant. 10098 10099End-Of-File is now allowed within a "//"-style comment. A parse error no 10100longer occurs if such a comment is at the very end of the input ASL 10101source 10102file. 10103 10104Implemented the "-r" option to override the Revision in the table header. 10105The initial use of this option will be to simplify the evaluation of the 10106AML 10107interpreter by allowing a single ASL source module to be compiled for 10108either 1010932-bit or 64-bit integers. 10110 10111 10112---------------------------------------- 1011327 August 2004. Summary of changes for version 20040827: 10114 101151) ACPI CA Core Subsystem: 10116 10117- Implemented support for implicit object conversion in the non-numeric 10118logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 10119and 10120LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 10121the second operand is implicitly converted on the fly to match the type 10122of 10123the first operand. For example: 10124 10125 LEqual (Source1, Source2) 10126 10127Source1 and Source2 must each evaluate to an integer, a string, or a 10128buffer. 10129The data type of Source1 dictates the required type of Source2. Source2 10130is 10131implicitly converted if necessary to match the type of Source1. 10132 10133- Updated and corrected the behavior of the string conversion support. 10134The 10135rules concerning conversion of buffers to strings (according to the ACPI 10136specification) are as follows: 10137 10138ToDecimalString - explicit byte-wise conversion of buffer to string of 10139decimal values (0-255) separated by commas. ToHexString - explicit byte- 10140wise 10141conversion of buffer to string of hex values (0-FF) separated by commas. 10142ToString - explicit byte-wise conversion of buffer to string. Byte-by- 10143byte 10144copy with no transform except NULL terminated. Any other implicit buffer- 10145to- 10146string conversion - byte-wise conversion of buffer to string of hex 10147values 10148(0-FF) separated by spaces. 10149 10150- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 10151 10152- Fixed a problem in AcpiNsGetPathnameLength where the returned length 10153was 10154one byte too short in the case of a node in the root scope. This could 10155cause a fault during debug output. 10156 10157- Code and Data Size: Current and previous core subsystem library sizes 10158are 10159shown below. These are the code and data sizes for the acpica.lib 10160produced 10161by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10162any ACPI driver or OSPM code. The debug version of the code includes the 10163debug output trace mechanism and has a much larger code and data size. 10164Note 10165that these values will vary depending on the efficiency of the compiler 10166and 10167the compiler options used during generation. 10168 10169 Previous Release: 10170 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10171 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10172 Current Release: 10173 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 10174 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 10175 10176 101772) iASL Compiler/Disassembler: 10178 10179- Fixed a Linux generation error. 10180 10181 10182---------------------------------------- 1018316 August 2004. Summary of changes for version 20040816: 10184 101851) ACPI CA Core Subsystem: 10186 10187Designed and implemented support within the AML interpreter for the so- 10188called "implicit return". This support returns the result of the last 10189ASL 10190operation within a control method, in the absence of an explicit Return() 10191operator. A few machines depend on this behavior, even though it is not 10192explicitly supported by the ASL language. It is optional support that 10193can 10194be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 10195 10196Removed support for the PCI_Config address space from the internal low 10197level 10198hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 10199support was not used internally, and would not work correctly anyway 10200because 10201the PCI bus number and segment number were not supported. There are 10202separate interfaces for PCI configuration space access because of the 10203unique 10204interface. 10205 10206Code and Data Size: Current and previous core subsystem library sizes are 10207shown below. These are the code and data sizes for the acpica.lib 10208produced 10209by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10210any ACPI driver or OSPM code. The debug version of the code includes the 10211debug output trace mechanism and has a much larger code and data size. 10212Note 10213that these values will vary depending on the efficiency of the compiler 10214and 10215the compiler options used during generation. 10216 10217 Previous Release: 10218 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10219 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 10220 Current Release: 10221 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 10222 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 10223 10224 102252) iASL Compiler/Disassembler: 10226 10227Fixed a problem where constants in ASL expressions at the root level (not 10228within a control method) could be inadvertently truncated during code 10229generation. This problem was introduced in the 20040715 release. 10230 10231 10232---------------------------------------- 1023315 July 2004. Summary of changes for version 20040715: 10234 102351) ACPI CA Core Subsystem: 10236 10237Restructured the internal HW GPE interfaces to pass/track the current 10238state 10239of interrupts (enabled/disabled) in order to avoid possible deadlock and 10240increase flexibility of the interfaces. 10241 10242Implemented a "lexicographical compare" for String and Buffer objects 10243within 10244the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 10245- 10246as per further clarification to the ACPI specification. Behavior is 10247similar 10248to C library "strcmp". 10249 10250Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 10251external function. In the 32-bit non-debug case, the stack use has been 10252reduced from 168 bytes to 32 bytes. 10253 10254Deployed a new run-time configuration flag, 10255AcpiGbl_EnableInterpreterSlack, 10256whose purpose is to allow the AML interpreter to forgive certain bad AML 10257constructs. Default setting is FALSE. 10258 10259Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 10260IO 10261support code. If enabled, it allows field access to go beyond the end of 10262a 10263region definition if the field is within the region length rounded up to 10264the 10265next access width boundary (a common coding error.) 10266 10267Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 10268ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 10269these 10270symbols are lowercased by the latest version of the AcpiSrc tool. 10271 10272The prototypes for the PCI interfaces in acpiosxf.h have been updated to 10273rename "Register" to simply "Reg" to prevent certain compilers from 10274complaining. 10275 10276Code and Data Size: Current and previous core subsystem library sizes are 10277shown below. These are the code and data sizes for the acpica.lib 10278produced 10279by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10280any ACPI driver or OSPM code. The debug version of the code includes the 10281debug output trace mechanism and has a much larger code and data size. 10282Note 10283that these values will vary depending on the efficiency of the compiler 10284and 10285the compiler options used during generation. 10286 10287 Previous Release: 10288 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10289 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 10290 Current Release: 10291 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10292 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 10293 10294 102952) iASL Compiler/Disassembler: 10296 10297Implemented full support for Package objects within the Case() operator. 10298Note: The Break() operator is currently not supported within Case blocks 10299(TermLists) as there is some question about backward compatibility with 10300ACPI 103011.0 interpreters. 10302 10303 10304Fixed a problem where complex terms were not supported properly within 10305the 10306Switch() operator. 10307 10308Eliminated extraneous warning for compiler-emitted reserved names of the 10309form "_T_x". (Used in Switch/Case operators.) 10310 10311Eliminated optimization messages for "_T_x" objects and small constants 10312within the DefinitionBlock operator. 10313 10314 10315---------------------------------------- 1031615 June 2004. Summary of changes for version 20040615: 10317 103181) ACPI CA Core Subsystem: 10319 10320Implemented support for Buffer and String objects (as per ACPI 2.0) for 10321the 10322following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 10323LLessEqual. 10324 10325All directory names in the entire source package are lower case, as they 10326were in earlier releases. 10327 10328Implemented "Disassemble" command in the AML debugger that will 10329disassemble 10330a single control method. 10331 10332Code and Data Size: Current and previous core subsystem library sizes are 10333shown below. These are the code and data sizes for the acpica.lib 10334produced 10335by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10336any ACPI driver or OSPM code. The debug version of the code includes the 10337debug output trace mechanism and has a much larger code and data size. 10338Note 10339that these values will vary depending on the efficiency of the compiler 10340and 10341the compiler options used during generation. 10342 10343 Previous Release: 10344 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 10345 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 10346 10347 Current Release: 10348 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 10349 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 10350 10351 103522) iASL Compiler/Disassembler: 10353 10354Implemented support for Buffer and String objects (as per ACPI 2.0) for 10355the 10356following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 10357LLessEqual. 10358 10359All directory names in the entire source package are lower case, as they 10360were in earlier releases. 10361 10362Fixed a fault when using the -g or -d<nofilename> options if the FADT was 10363not found. 10364 10365Fixed an issue with the Windows version of the compiler where later 10366versions 10367of Windows place the FADT in the registry under the name "FADT" and not 10368"FACP" as earlier versions did. This applies when using the -g or - 10369d<nofilename> options. The compiler now looks for both strings as 10370necessary. 10371 10372Fixed a problem with compiler namepath optimization where a namepath 10373within 10374the Scope() operator could not be optimized if the namepath was a subpath 10375of 10376the current scope path. 10377 10378---------------------------------------- 1037927 May 2004. Summary of changes for version 20040527: 10380 103811) ACPI CA Core Subsystem: 10382 10383Completed a new design and implementation for EBDA (Extended BIOS Data 10384Area) 10385support in the RSDP scan code. The original code improperly scanned for 10386the 10387EBDA by simply scanning from memory location 0 to 0x400. The correct 10388method 10389is to first obtain the EBDA pointer from within the BIOS data area, then 10390scan 1K of memory starting at the EBDA pointer. There appear to be few 10391if 10392any machines that place the RSDP in the EBDA, however. 10393 10394Integrated a fix for a possible fault during evaluation of BufferField 10395arguments. Obsolete code that was causing the problem was removed. 10396 10397Found and fixed a problem in the Field Support Code where data could be 10398corrupted on a bit field read that starts on an aligned boundary but does 10399not end on an aligned boundary. Merged the read/write "datum length" 10400calculation code into a common procedure. 10401 10402Rolled in a couple of changes to the FreeBSD-specific header. 10403 10404 10405Code and Data Size: Current and previous core subsystem library sizes are 10406shown below. These are the code and data sizes for the acpica.lib 10407produced 10408by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10409any ACPI driver or OSPM code. The debug version of the code includes the 10410debug output trace mechanism and has a much larger code and data size. 10411Note 10412that these values will vary depending on the efficiency of the compiler 10413and 10414the compiler options used during generation. 10415 10416 Previous Release: 10417 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10418 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 10419 Current Release: 10420 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 10421 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 10422 10423 104242) iASL Compiler/Disassembler: 10425 10426Fixed a generation warning produced by some overly-verbose compilers for 10427a 1042864-bit constant. 10429 10430---------------------------------------- 1043114 May 2004. Summary of changes for version 20040514: 10432 104331) ACPI CA Core Subsystem: 10434 10435Fixed a problem where hardware GPE enable bits sometimes not set properly 10436during and after GPE method execution. Result of 04/27 changes. 10437 10438Removed extra "clear all GPEs" when sleeping/waking. 10439 10440Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 10441AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 10442to 10443the new AcpiEv* calls as appropriate. 10444 10445ACPI_OS_NAME was removed from the OS-specific headers. The default name 10446is 10447now "Microsoft Windows NT" for maximum compatibility. However this can 10448be 10449changed by modifying the acconfig.h file. 10450 10451Allow a single invocation of AcpiInstallNotifyHandler for a handler that 10452traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 10453 10454Run _INI methods on ThermalZone objects. This is against the ACPI 10455specification, but there is apparently ASL code in the field that has 10456these 10457_INI methods, and apparently "other" AML interpreters execute them. 10458 10459Performed a full 16/32/64 bit lint that resulted in some small changes. 10460 10461Added a sleep simulation command to the AML debugger to test sleep code. 10462 10463Code and Data Size: Current and previous core subsystem library sizes are 10464shown below. These are the code and data sizes for the acpica.lib 10465produced 10466by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10467any ACPI driver or OSPM code. The debug version of the code includes the 10468debug output trace mechanism and has a much larger code and data size. 10469Note 10470that these values will vary depending on the efficiency of the compiler 10471and 10472the compiler options used during generation. 10473 10474 Previous Release: 10475 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10476 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 10477 Current Release: 10478 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10479 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 10480 10481---------------------------------------- 1048227 April 2004. Summary of changes for version 20040427: 10483 104841) ACPI CA Core Subsystem: 10485 10486Completed a major overhaul of the GPE handling within ACPI CA. There are 10487now three types of GPEs: wake-only, runtime-only, and combination 10488wake/run. 10489The only GPEs allowed to be combination wake/run are for button-style 10490devices such as a control-method power button, control-method sleep 10491button, 10492or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 10493not 10494referenced by any _PRW methods are marked for "runtime" and hardware 10495enabled. Any GPE that is referenced by a _PRW method is marked for 10496"wake" 10497(and disabled at runtime). However, at sleep time, only those GPEs that 10498have been specifically enabled for wake via the AcpiEnableGpe interface 10499will 10500actually be hardware enabled. 10501 10502A new external interface has been added, AcpiSetGpeType(), that is meant 10503to 10504be used by device drivers to force a GPE to a particular type. It will 10505be 10506especially useful for the drivers for the button devices mentioned above. 10507 10508Completed restructuring of the ACPI CA initialization sequence so that 10509default operation region handlers are installed before GPEs are 10510initialized 10511and the _PRW methods are executed. This will prevent errors when the 10512_PRW 10513methods attempt to access system memory or I/O space. 10514 10515GPE enable/disable no longer reads the GPE enable register. We now keep 10516the 10517enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 10518thus no longer depend on the hardware to maintain these bits. 10519 10520Always clear the wake status and fixed/GPE status bits before sleep, even 10521for state S5. 10522 10523Improved the AML debugger output for displaying the GPE blocks and their 10524current status. 10525 10526Added new strings for the _OSI method, of the form "Windows 2001 SPx" 10527where 10528x = 0,1,2,3,4. 10529 10530Fixed a problem where the physical address was incorrectly calculated 10531when 10532the Load() operator was used to directly load from an Operation Region 10533(vs. 10534loading from a Field object.) Also added check for minimum table length 10535for 10536this case. 10537 10538Fix for multiple mutex acquisition. Restore original thread SyncLevel on 10539mutex release. 10540 10541Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 10542consistency with the other fields returned. 10543 10544Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 10545structure for each GPE in the system, so the size of this structure is 10546important. 10547 10548CPU stack requirement reduction: Cleaned up the method execution and 10549object 10550evaluation paths so that now a parameter structure is passed, instead of 10551copying the various method parameters over and over again. 10552 10553In evregion.c: Correctly exit and reenter the interpreter region if and 10554only if dispatching an operation region request to a user-installed 10555handler. 10556Do not exit/reenter when dispatching to a default handler (e.g., default 10557system memory or I/O handlers) 10558 10559 10560Notes for updating drivers for the new GPE support. The following 10561changes 10562must be made to ACPI-related device drivers that are attached to one or 10563more 10564GPEs: (This information will be added to the ACPI CA Programmer 10565Reference.) 10566 105671) AcpiInstallGpeHandler no longer automatically enables the GPE, you 10568must 10569explicitly call AcpiEnableGpe. 105702) There is a new interface called AcpiSetGpeType. This should be called 10571before enabling the GPE. Also, this interface will automatically disable 10572the GPE if it is currently enabled. 105733) AcpiEnableGpe no longer supports a GPE type flag. 10574 10575Specific drivers that must be changed: 105761) EC driver: 10577 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 10578AeGpeHandler, NULL); 10579 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 10580 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 10581 105822) Button Drivers (Power, Lid, Sleep): 10583Run _PRW method under parent device 10584If _PRW exists: /* This is a control-method button */ 10585 Extract GPE number and possibly GpeDevice 10586 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 10587 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 10588 10589For all other devices that have _PRWs, we automatically set the GPE type 10590to 10591ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 10592This 10593must be done on a selective basis, usually requiring some kind of user 10594app 10595to allow the user to pick the wake devices. 10596 10597 10598Code and Data Size: Current and previous core subsystem library sizes are 10599shown below. These are the code and data sizes for the acpica.lib 10600produced 10601by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10602any ACPI driver or OSPM code. The debug version of the code includes the 10603debug output trace mechanism and has a much larger code and data size. 10604Note 10605that these values will vary depending on the efficiency of the compiler 10606and 10607the compiler options used during generation. 10608 10609 Previous Release: 10610 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 10611 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 10612 Current Release: 10613 10614 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 10615 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 10616 10617 10618 10619---------------------------------------- 1062002 April 2004. Summary of changes for version 20040402: 10621 106221) ACPI CA Core Subsystem: 10623 10624Fixed an interpreter problem where an indirect store through an ArgX 10625parameter was incorrectly applying the "implicit conversion rules" during 10626the store. From the ACPI specification: "If the target is a method local 10627or 10628argument (LocalX or ArgX), no conversion is performed and the result is 10629stored directly to the target". The new behavior is to disable implicit 10630conversion during ALL stores to an ArgX. 10631 10632Changed the behavior of the _PRW method scan to ignore any and all errors 10633returned by a given _PRW. This prevents the scan from aborting from the 10634failure of any single _PRW. 10635 10636Moved the runtime configuration parameters from the global init procedure 10637to 10638static variables in acglobal.h. This will allow the host to override the 10639default values easily. 10640 10641Code and Data Size: Current and previous core subsystem library sizes are 10642shown below. These are the code and data sizes for the acpica.lib 10643produced 10644by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10645any ACPI driver or OSPM code. The debug version of the code includes the 10646debug output trace mechanism and has a much larger code and data size. 10647Note 10648that these values will vary depending on the efficiency of the compiler 10649and 10650the compiler options used during generation. 10651 10652 Previous Release: 10653 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 10654 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 10655 Current Release: 10656 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 10657 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 10658 10659 106602) iASL Compiler/Disassembler: 10661 10662iASL now fully disassembles SSDTs. However, External() statements are 10663not 10664generated automatically for unresolved symbols at this time. This is a 10665planned feature for future implementation. 10666 10667Fixed a scoping problem in the disassembler that occurs when the type of 10668the 10669target of a Scope() operator is overridden. This problem caused an 10670incorrectly nested internal namespace to be constructed. 10671 10672Any warnings or errors that are emitted during disassembly are now 10673commented 10674out automatically so that the resulting file can be recompiled without 10675any 10676hand editing. 10677 10678---------------------------------------- 1067926 March 2004. Summary of changes for version 20040326: 10680 106811) ACPI CA Core Subsystem: 10682 10683Implemented support for "wake" GPEs via interaction between GPEs and the 10684_PRW methods. Every GPE that is pointed to by one or more _PRWs is 10685identified as a WAKE GPE and by default will no longer be enabled at 10686runtime. Previously, we were blindly enabling all GPEs with a 10687corresponding 10688_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 10689We 10690believe this has been the cause of thousands of "spurious" GPEs on some 10691systems. 10692 10693This new GPE behavior is can be reverted to the original behavior (enable 10694ALL GPEs at runtime) via a runtime flag. 10695 10696Fixed a problem where aliased control methods could not access objects 10697properly. The proper scope within the namespace was not initialized 10698(transferred to the target of the aliased method) before executing the 10699target method. 10700 10701Fixed a potential race condition on internal object deletion on the 10702return 10703object in AcpiEvaluateObject. 10704 10705Integrated a fix for resource descriptors where both _MEM and _MTP were 10706being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 10707wide, 0x0F instead of 0x03.) 10708 10709Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 10710preventing 10711a 10712fault in some cases. 10713 10714Updated Notify() values for debug statements in evmisc.c 10715 10716Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 10717 10718Code and Data Size: Current and previous core subsystem library sizes are 10719shown below. These are the code and data sizes for the acpica.lib 10720produced 10721by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10722any ACPI driver or OSPM code. The debug version of the code includes the 10723debug output trace mechanism and has a much larger code and data size. 10724Note 10725that these values will vary depending on the efficiency of the compiler 10726and 10727the compiler options used during generation. 10728 10729 Previous Release: 10730 10731 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 10732 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 10733 Current Release: 10734 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 10735 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 10736 10737---------------------------------------- 1073811 March 2004. Summary of changes for version 20040311: 10739 107401) ACPI CA Core Subsystem: 10741 10742Fixed a problem where errors occurring during the parse phase of control 10743method execution did not abort cleanly. For example, objects created and 10744installed in the namespace were not deleted. This caused all subsequent 10745invocations of the method to return the AE_ALREADY_EXISTS exception. 10746 10747Implemented a mechanism to force a control method to "Serialized" 10748execution 10749if the method attempts to create namespace objects. (The root of the 10750AE_ALREADY_EXISTS problem.) 10751 10752Implemented support for the predefined _OSI "internal" control method. 10753Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 10754and 10755"Windows 2001.1", and can be easily upgraded for new strings as 10756necessary. 10757This feature will allow "other" operating systems to execute the fully 10758tested, "Windows" code path through the ASL code 10759 10760Global Lock Support: Now allows multiple acquires and releases with any 10761internal thread. Removed concept of "owning thread" for this special 10762mutex. 10763 10764Fixed two functions that were inappropriately declaring large objects on 10765the 10766CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 10767during 10768method execution considerably. 10769 10770Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 10771S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 10772 10773Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 10774defined on the machine. 10775 10776Implemented two runtime options: One to force all control method 10777execution 10778to "Serialized" to mimic Windows behavior, another to disable _OSI 10779support 10780if it causes problems on a given machine. 10781 10782Code and Data Size: Current and previous core subsystem library sizes are 10783shown below. These are the code and data sizes for the acpica.lib 10784produced 10785by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10786any ACPI driver or OSPM code. The debug version of the code includes the 10787debug output trace mechanism and has a much larger code and data size. 10788Note 10789that these values will vary depending on the efficiency of the compiler 10790and 10791the compiler options used during generation. 10792 10793 Previous Release: 10794 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 10795 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 10796 Current Release: 10797 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 10798 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 10799 108002) iASL Compiler/Disassembler: 10801 10802Fixed an array size problem for FreeBSD that would cause the compiler to 10803fault. 10804 10805---------------------------------------- 1080620 February 2004. Summary of changes for version 20040220: 10807 10808 108091) ACPI CA Core Subsystem: 10810 10811Implemented execution of _SxD methods for Device objects in the 10812GetObjectInfo interface. 10813 10814Fixed calls to _SST method to pass the correct arguments. 10815 10816Added a call to _SST on wake to restore to "working" state. 10817 10818Check for End-Of-Buffer failure case in the WalkResources interface. 10819 10820Integrated fix for 64-bit alignment issue in acglobal.h by moving two 10821structures to the beginning of the file. 10822 10823After wake, clear GPE status register(s) before enabling GPEs. 10824 10825After wake, clear/enable power button. (Perhaps we should clear/enable 10826all 10827fixed events upon wake.) 10828 10829Fixed a couple of possible memory leaks in the Namespace manager. 10830 10831Integrated latest acnetbsd.h file. 10832 10833---------------------------------------- 1083411 February 2004. Summary of changes for version 20040211: 10835 10836 108371) ACPI CA Core Subsystem: 10838 10839Completed investigation and implementation of the call-by-reference 10840mechanism for control method arguments. 10841 10842Fixed a problem where a store of an object into an indexed package could 10843fail if the store occurs within a different method than the method that 10844created the package. 10845 10846Fixed a problem where the ToDecimal operator could return incorrect 10847results. 10848 10849Fixed a problem where the CopyObject operator could fail on some of the 10850more 10851obscure objects (e.g., Reference objects.) 10852 10853Improved the output of the Debug object to display buffer, package, and 10854index objects. 10855 10856Fixed a problem where constructs of the form "RefOf (ArgX)" did not 10857return 10858the expected result. 10859 10860Added permanent ACPI_REPORT_ERROR macros for all instances of the 10861ACPI_AML_INTERNAL exception. 10862 10863Integrated latest version of acfreebsd.h 10864 10865---------------------------------------- 1086616 January 2004. Summary of changes for version 20040116: 10867 10868The purpose of this release is primarily to update the copyright years in 10869each module, thus causing a huge number of diffs. There are a few small 10870functional changes, however. 10871 108721) ACPI CA Core Subsystem: 10873 10874Improved error messages when there is a problem finding one or more of 10875the 10876required base ACPI tables 10877 10878Reintroduced the definition of APIC_HEADER in actbl.h 10879 10880Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 10881 10882Removed extraneous reference to NewObj in dsmthdat.c 10883 108842) iASL compiler 10885 10886Fixed a problem introduced in December that disabled the correct 10887disassembly 10888of Resource Templates 10889 10890 10891---------------------------------------- 1089203 December 2003. Summary of changes for version 20031203: 10893 108941) ACPI CA Core Subsystem: 10895 10896Changed the initialization of Operation Regions during subsystem 10897init to perform two entire walks of the ACPI namespace; The first 10898to initialize the regions themselves, the second to execute the 10899_REG methods. This fixed some interdependencies across _REG 10900methods found on some machines. 10901 10902Fixed a problem where a Store(Local0, Local1) could simply update 10903the object reference count, and not create a new copy of the 10904object if the Local1 is uninitialized. 10905 10906Implemented support for the _SST reserved method during sleep 10907transitions. 10908 10909Implemented support to clear the SLP_TYP and SLP_EN bits when 10910waking up, this is apparently required by some machines. 10911 10912When sleeping, clear the wake status only if SleepState is not S5. 10913 10914Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 10915pointer arithmetic advanced a string pointer too far. 10916 10917Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 10918could be returned if the requested table has not been loaded. 10919 10920Within the support for IRQ resources, restructured the handling of 10921the active and edge/level bits. 10922 10923Fixed a few problems in AcpiPsxExecute() where memory could be 10924leaked under certain error conditions. 10925 10926Improved error messages for the cases where the ACPI mode could 10927not be entered. 10928 10929Code and Data Size: Current and previous core subsystem library 10930sizes are shown below. These are the code and data sizes for the 10931acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 10932these values do not include any ACPI driver or OSPM code. The 10933debug version of the code includes the debug output trace 10934mechanism and has a much larger code and data size. Note that 10935these values will vary depending on the efficiency of the compiler 10936and the compiler options used during generation. 10937 10938 Previous Release (20031029): 10939 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 10940 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 10941 Current Release: 10942 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 10943 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 10944 109452) iASL Compiler/Disassembler: 10946 10947Implemented a fix for the iASL disassembler where a bad index was 10948generated. This was most noticeable on 64-bit platforms 10949 10950 10951---------------------------------------- 1095229 October 2003. Summary of changes for version 20031029: 10953 109541) ACPI CA Core Subsystem: 10955 10956 10957Fixed a problem where a level-triggered GPE with an associated 10958_Lxx control method was incorrectly cleared twice. 10959 10960Fixed a problem with the Field support code where an access can 10961occur beyond the end-of-region if the field is non-aligned but 10962extends to the very end of the parent region (resulted in an 10963AE_AML_REGION_LIMIT exception.) 10964 10965Fixed a problem with ACPI Fixed Events where an RT Clock handler 10966would not get invoked on an RTC event. The RTC event bitmasks for 10967the PM1 registers were not being initialized properly. 10968 10969Implemented support for executing _STA and _INI methods for 10970Processor objects. Although this is currently not part of the 10971ACPI specification, there is existing ASL code that depends on the 10972init-time execution of these methods. 10973 10974Implemented and deployed a GetDescriptorName function to decode 10975the various types of internal descriptors. Guards against null 10976descriptors during debug output also. 10977 10978Implemented and deployed a GetNodeName function to extract the 4- 10979character namespace node name. This function simplifies the debug 10980and error output, as well as guarding against null pointers during 10981output. 10982 10983Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 10984simplify the debug and error output of 64-bit integers. This 10985macro replaces the HIDWORD and LODWORD macros for dumping these 10986integers. 10987 10988Updated the implementation of the Stall() operator to only call 10989AcpiOsStall(), and also return an error if the operand is larger 10990than 255. This preserves the required behavior of not 10991relinquishing the processor, as would happen if AcpiOsSleep() was 10992called for "long stalls". 10993 10994Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 10995initialized are now treated as NOOPs. 10996 10997Cleaned up a handful of warnings during 64-bit generation. 10998 10999Fixed a reported error where and incorrect GPE number was passed 11000to the GPE dispatch handler. This value is only used for error 11001output, however. Used this opportunity to clean up and streamline 11002the GPE dispatch code. 11003 11004Code and Data Size: Current and previous core subsystem library 11005sizes are shown below. These are the code and data sizes for the 11006acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11007these values do not include any ACPI driver or OSPM code. The 11008 11009debug version of the code includes the debug output trace 11010mechanism and has a much larger code and data size. Note that 11011these values will vary depending on the efficiency of the compiler 11012and the compiler options used during generation. 11013 11014 Previous Release (20031002): 11015 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11016 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11017 Current Release: 11018 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 11019 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 11020 11021 110222) iASL Compiler/Disassembler: 11023 11024Updated the iASL compiler to return an error if the operand to the 11025Stall() operator is larger than 255. 11026 11027 11028---------------------------------------- 1102902 October 2003. Summary of changes for version 20031002: 11030 11031 110321) ACPI CA Core Subsystem: 11033 11034Fixed a problem with Index Fields where the index was not 11035incremented for fields that require multiple writes to the 11036index/data registers (Fields that are wider than the data 11037register.) 11038 11039Fixed a problem with all Field objects where a write could go 11040beyond the end-of-field if the field was larger than the access 11041granularity and therefore required multiple writes to complete the 11042request. An extra write beyond the end of the field could happen 11043inadvertently. 11044 11045Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 11046would incorrectly be returned if the width of the Data Register 11047was larger than the specified field access width. 11048 11049Completed fixes for LoadTable() and Unload() and verified their 11050operation. Implemented full support for the "DdbHandle" object 11051throughout the ACPI CA subsystem. 11052 11053Implemented full support for the MADT and ECDT tables in the ACPI 11054CA header files. Even though these tables are not directly 11055consumed by ACPI CA, the header definitions are useful for ACPI 11056device drivers. 11057 11058Integrated resource descriptor fixes posted to the Linux ACPI 11059list. This included checks for minimum descriptor length, and 11060support for trailing NULL strings within descriptors that have 11061optional string elements. 11062 11063Code and Data Size: Current and previous core subsystem library 11064sizes are shown below. These are the code and data sizes for the 11065acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11066these values do not include any ACPI driver or OSPM code. The 11067debug version of the code includes the debug output trace 11068mechanism and has a much larger code and data size. Note that 11069these values will vary depending on the efficiency of the compiler 11070and the compiler options used during generation. 11071 11072 Previous Release (20030918): 11073 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11074 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11075 Current Release: 11076 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 11077 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 11078 11079 110802) iASL Compiler: 11081 11082Implemented detection of non-ASCII characters within the input 11083source ASL file. This catches attempts to compile binary (AML) 11084files early in the compile, with an informative error message. 11085 11086Fixed a problem where the disassembler would fault if the output 11087filename could not be generated or if the output file could not be 11088opened. 11089 11090---------------------------------------- 1109118 September 2003. Summary of changes for version 20030918: 11092 11093 110941) ACPI CA Core Subsystem: 11095 11096Found and fixed a longstanding problem with the late execution of 11097the various deferred AML opcodes (such as Operation Regions, 11098Buffer Fields, Buffers, and Packages). If the name string 11099specified for the name of the new object placed the object in a 11100scope other than the current scope, the initialization/execution 11101of the opcode failed. The solution to this problem was to 11102implement a mechanism where the late execution of such opcodes 11103does not attempt to lookup/create the name a second time in an 11104incorrect scope. This fixes the "region size computed 11105incorrectly" problem. 11106 11107Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 11108Global Lock AE_BAD_PARAMETER error. 11109 11110Fixed several 64-bit issues with prototypes, casting and data 11111types. 11112 11113Removed duplicate prototype from acdisasm.h 11114 11115Fixed an issue involving EC Operation Region Detach (Shaohua Li) 11116 11117Code and Data Size: Current and previous core subsystem library 11118sizes are shown below. These are the code and data sizes for the 11119acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11120these values do not include any ACPI driver or OSPM code. The 11121debug version of the code includes the debug output trace 11122mechanism and has a much larger code and data size. Note that 11123these values will vary depending on the efficiency of the compiler 11124and the compiler options used during generation. 11125 11126 Previous Release: 11127 11128 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11129 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11130 Current Release: 11131 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 11132 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 11133 11134 111352) Linux: 11136 11137Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 11138correct sleep time in seconds. 11139 11140---------------------------------------- 1114114 July 2003. Summary of changes for version 20030619: 11142 111431) ACPI CA Core Subsystem: 11144 11145Parse SSDTs in order discovered, as opposed to reverse order 11146(Hrvoje Habjanic) 11147 11148Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 11149Klausner, 11150 Nate Lawson) 11151 11152 111532) Linux: 11154 11155Dynamically allocate SDT list (suggested by Andi Kleen) 11156 11157proc function return value cleanups (Andi Kleen) 11158 11159Correctly handle NMI watchdog during long stalls (Andrew Morton) 11160 11161Make it so acpismp=force works (reported by Andrew Morton) 11162 11163 11164---------------------------------------- 1116519 June 2003. Summary of changes for version 20030619: 11166 111671) ACPI CA Core Subsystem: 11168 11169Fix To/FromBCD, eliminating the need for an arch-specific #define. 11170 11171Do not acquire a semaphore in the S5 shutdown path. 11172 11173Fix ex_digits_needed for 0. (Takayoshi Kochi) 11174 11175Fix sleep/stall code reversal. (Andi Kleen) 11176 11177Revert a change having to do with control method calling 11178semantics. 11179 111802) Linux: 11181 11182acpiphp update (Takayoshi Kochi) 11183 11184Export acpi_disabled for sonypi (Stelian Pop) 11185 11186Mention acpismp=force in config help 11187 11188Re-add acpitable.c and acpismp=force. This improves backwards 11189 11190compatibility and also cleans up the code to a significant degree. 11191 11192Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 11193 11194---------------------------------------- 1119522 May 2003. Summary of changes for version 20030522: 11196 111971) ACPI CA Core Subsystem: 11198 11199Found and fixed a reported problem where an AE_NOT_FOUND error 11200occurred occasionally during _BST evaluation. This turned out to 11201be an Owner ID allocation issue where a called method did not get 11202a new ID assigned to it. Eventually, (after 64k calls), the Owner 11203ID UINT16 would wraparound so that the ID would be the same as the 11204caller's and the called method would delete the caller's 11205namespace. 11206 11207Implemented extended error reporting for control methods that are 11208aborted due to a run-time exception. Output includes the exact 11209AML instruction that caused the method abort, a dump of the method 11210locals and arguments at the time of the abort, and a trace of all 11211nested control method calls. 11212 11213Modified the interpreter to allow the creation of buffers of zero 11214length from the AML code. Implemented new code to ensure that no 11215attempt is made to actually allocate a memory buffer (of length 11216zero) - instead, a simple buffer object with a NULL buffer pointer 11217and length zero is created. A warning is no longer issued when 11218the AML attempts to create a zero-length buffer. 11219 11220Implemented a workaround for the "leading asterisk issue" in 11221_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 11222asterisk is automatically removed if present in any HID, UID, or 11223CID strings. The iASL compiler will still flag this asterisk as 11224an error, however. 11225 11226Implemented full support for _CID methods that return a package of 11227multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 11228now additionally returns a device _CID list if present. This 11229required a change to the external interface in order to pass an 11230ACPI_BUFFER object as a parameter since the _CID list is of 11231variable length. 11232 11233Fixed a problem with the new AE_SAME_HANDLER exception where 11234handler initialization code did not know about this exception. 11235 11236Code and Data Size: Current and previous core subsystem library 11237sizes are shown below. These are the code and data sizes for the 11238acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 11239these values do not include any ACPI driver or OSPM code. The 11240debug version of the code includes the debug output trace 11241mechanism and has a much larger code and data size. Note that 11242these values will vary depending on the efficiency of the compiler 11243and the compiler options used during generation. 11244 11245 Previous Release (20030509): 11246 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 11247 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 11248 Current Release: 11249 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 11250 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 11251 11252 112532) Linux: 11254 11255Fixed a bug in which we would reinitialize the ACPI interrupt 11256after it was already working, thus disabling all ACPI and the IRQs 11257for any other device sharing the interrupt. (Thanks to Stian 11258Jordet) 11259 11260Toshiba driver update (John Belmonte) 11261 11262Return only 0 or 1 for our interrupt handler status (Andrew 11263Morton) 11264 11265 112663) iASL Compiler: 11267 11268Fixed a reported problem where multiple (nested) ElseIf() 11269statements were not handled correctly by the compiler, resulting 11270in incorrect warnings and incorrect AML code. This was a problem 11271in both the ASL parser and the code generator. 11272 11273 112744) Documentation: 11275 11276Added changes to existing interfaces, new exception codes, and new 11277text concerning reference count object management versus garbage 11278collection. 11279 11280---------------------------------------- 1128109 May 2003. Summary of changes for version 20030509. 11282 11283 112841) ACPI CA Core Subsystem: 11285 11286Changed the subsystem initialization sequence to hold off 11287installation of address space handlers until the hardware has been 11288initialized and the system has entered ACPI mode. This is because 11289the installation of space handlers can cause _REG methods to be 11290run. Previously, the _REG methods could potentially be run before 11291ACPI mode was enabled. 11292 11293Fixed some memory leak issues related to address space handler and 11294notify handler installation. There were some problems with the 11295reference count mechanism caused by the fact that the handler 11296objects are shared across several namespace objects. 11297 11298Fixed a reported problem where reference counts within the 11299namespace were not properly updated when named objects created by 11300method execution were deleted. 11301 11302Fixed a reported problem where multiple SSDTs caused a deletion 11303issue during subsystem termination. Restructured the table data 11304structures to simplify the linked lists and the related code. 11305 11306Fixed a problem where the table ID associated with secondary 11307tables (SSDTs) was not being propagated into the namespace objects 11308created by those tables. This would only present a problem for 11309tables that are unloaded at run-time, however. 11310 11311Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 11312type as the length parameter (instead of UINT32). 11313 11314Solved a long-standing problem where an ALREADY_EXISTS error 11315appears on various systems. This problem could happen when there 11316are multiple PCI_Config operation regions under a single PCI root 11317bus. This doesn't happen very frequently, but there are some 11318systems that do this in the ASL. 11319 11320Fixed a reported problem where the internal DeleteNode function 11321was incorrectly handling the case where a namespace node was the 11322first in the parent's child list, and had additional peers (not 11323the only child, but first in the list of children.) 11324 11325Code and Data Size: Current core subsystem library sizes are shown 11326below. These are the code and data sizes for the acpica.lib 11327produced by the Microsoft Visual C++ 6.0 compiler, and these 11328values do not include any ACPI driver or OSPM code. The debug 11329version of the code includes the debug output trace mechanism and 11330has a much larger code and data size. Note that these values will 11331vary depending on the efficiency of the compiler and the compiler 11332options used during generation. 11333 11334 Previous Release 11335 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 11336 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 11337 Current Release: 11338 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 11339 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 11340 11341 113422) Linux: 11343 11344Allow ":" in OS override string (Ducrot Bruno) 11345 11346Kobject fix (Greg KH) 11347 11348 113493 iASL Compiler/Disassembler: 11350 11351Fixed a problem in the generation of the C source code files (AML 11352is emitted in C source statements for BIOS inclusion) where the 11353Ascii dump that appears within a C comment at the end of each line 11354could cause a compile time error if the AML sequence happens to 11355have an open comment or close comment sequence embedded. 11356 11357 11358---------------------------------------- 1135924 April 2003. Summary of changes for version 20030424. 11360 11361 113621) ACPI CA Core Subsystem: 11363 11364Support for big-endian systems has been implemented. Most of the 11365support has been invisibly added behind big-endian versions of the 11366ACPI_MOVE_* macros. 11367 11368Fixed a problem in AcpiHwDisableGpeBlock() and 11369AcpiHwClearGpeBlock() where an incorrect offset was passed to the 11370low level hardware write routine. The offset parameter was 11371actually eliminated from the low level read/write routines because 11372they had become obsolete. 11373 11374Fixed a problem where a handler object was deleted twice during 11375the removal of a fixed event handler. 11376 11377 113782) Linux: 11379 11380A fix for SMP systems with link devices was contributed by 11381 11382Compaq's Dan Zink. 11383 11384(2.5) Return whether we handled the interrupt in our IRQ handler. 11385(Linux ISRs no longer return void, so we can propagate the handler 11386return value from the ACPI CA core back to the OS.) 11387 11388 11389 113903) Documentation: 11391 11392The ACPI CA Programmer Reference has been updated to reflect new 11393interfaces and changes to existing interfaces. 11394 11395---------------------------------------- 1139628 March 2003. Summary of changes for version 20030328. 11397 113981) ACPI CA Core Subsystem: 11399 11400The GPE Block Device support has been completed. New interfaces 11401are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 11402interfaces (enable, disable, clear, getstatus) have been split 11403into separate interfaces for Fixed Events and General Purpose 11404Events (GPEs) in order to support GPE Block Devices properly. 11405 11406Fixed a problem where the error message "Failed to acquire 11407semaphore" would appear during operations on the embedded 11408controller (EC). 11409 11410Code and Data Size: Current core subsystem library sizes are shown 11411below. These are the code and data sizes for the acpica.lib 11412produced by the Microsoft Visual C++ 6.0 compiler, and these 11413values do not include any ACPI driver or OSPM code. The debug 11414version of the code includes the debug output trace mechanism and 11415has a much larger code and data size. Note that these values will 11416vary depending on the efficiency of the compiler and the compiler 11417options used during generation. 11418 11419 Previous Release 11420 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 11421 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 11422 Current Release: 11423 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 11424 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 11425 11426 11427---------------------------------------- 1142828 February 2003. Summary of changes for version 20030228. 11429 11430 114311) ACPI CA Core Subsystem: 11432 11433The GPE handling and dispatch code has been completely overhauled 11434in preparation for support of GPE Block Devices (ID ACPI0006). 11435This affects internal data structures and code only; there should 11436be no differences visible externally. One new file has been 11437added, evgpeblk.c 11438 11439The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 11440fields that are used to determine the GPE block lengths. The 11441REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 11442structures are ignored. This is per the ACPI specification but it 11443isn't very clear. The full 256 Block 0/1 GPEs are now supported 11444(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 11445 11446In the SCI interrupt handler, removed the read of the PM1_CONTROL 11447register to look at the SCI_EN bit. On some machines, this read 11448causes an SMI event and greatly slows down SCI events. (This may 11449in fact be the cause of slow battery status response on some 11450systems.) 11451 11452Fixed a problem where a store of a NULL string to a package object 11453could cause the premature deletion of the object. This was seen 11454during execution of the battery _BIF method on some systems, 11455resulting in no battery data being returned. 11456 11457Added AcpiWalkResources interface to simplify parsing of resource 11458lists. 11459 11460Code and Data Size: Current core subsystem library sizes are shown 11461below. These are the code and data sizes for the acpica.lib 11462produced by the Microsoft Visual C++ 6.0 compiler, and these 11463values do not include any ACPI driver or OSPM code. The debug 11464version of the code includes the debug output trace mechanism and 11465has a much larger code and data size. Note that these values will 11466vary depending on the efficiency of the compiler and the compiler 11467options used during generation. 11468 11469 Previous Release 11470 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 11471 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 11472 Current Release: 11473 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 11474 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 11475 11476 114772) Linux 11478 11479S3 fixes (Ole Rohne) 11480 11481Update ACPI PHP driver with to use new acpi_walk_resource API 11482(Bjorn Helgaas) 11483 11484Add S4BIOS support (Pavel Machek) 11485 11486Map in entire table before performing checksum (John Stultz) 11487 11488Expand the mem= cmdline to allow the specification of reserved and 11489ACPI DATA blocks (Pavel Machek) 11490 11491Never use ACPI on VISWS 11492 11493Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 11494 11495Revert a change that allowed P_BLK lengths to be 4 or 5. This is 11496causing us to think that some systems support C2 when they really 11497don't. 11498 11499Do not count processor objects for non-present CPUs (Thanks to 11500Dominik Brodowski) 11501 11502 115033) iASL Compiler: 11504 11505Fixed a problem where ASL include files could not be found and 11506opened. 11507 11508Added support for the _PDC reserved name. 11509 11510 11511---------------------------------------- 1151222 January 2003. Summary of changes for version 20030122. 11513 11514 115151) ACPI CA Core Subsystem: 11516 11517Added a check for constructs of the form: Store (Local0, Local0) 11518where Local0 is not initialized. Apparently, some BIOS 11519programmers believe that this is a NOOP. Since this store doesn't 11520do anything anyway, the new prototype behavior will ignore this 11521error. This is a case where we can relax the strict checking in 11522the interpreter in the name of compatibility. 11523 11524 115252) Linux 11526 11527The AcpiSrc Source Conversion Utility has been released with the 11528Linux package for the first time. This is the utility that is 11529used to convert the ACPI CA base source code to the Linux version. 11530 11531(Both) Handle P_BLK lengths shorter than 6 more gracefully 11532 11533(Both) Move more headers to include/acpi, and delete an unused 11534header. 11535 11536(Both) Move drivers/acpi/include directory to include/acpi 11537 11538(Both) Boot functions don't use cmdline, so don't pass it around 11539 11540(Both) Remove include of unused header (Adrian Bunk) 11541 11542(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 11543the 11544former now also includes the latter, acpiphp.h only needs the one, 11545now. 11546 11547(2.5) Make it possible to select method of bios restoring after S3 11548resume. [=> no more ugly ifdefs] (Pavel Machek) 11549 11550(2.5) Make proc write interfaces work (Pavel Machek) 11551 11552(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 11553 11554(2.5) Break out ACPI Perf code into its own module, under cpufreq 11555(Dominik Brodowski) 11556 11557(2.4) S4BIOS support (Ducrot Bruno) 11558 11559(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 11560Visinoni) 11561 11562 115633) iASL Compiler: 11564 11565Added support to disassemble SSDT and PSDTs. 11566 11567Implemented support to obtain SSDTs from the Windows registry if 11568available. 11569 11570 11571---------------------------------------- 1157209 January 2003. Summary of changes for version 20030109. 11573 115741) ACPI CA Core Subsystem: 11575 11576Changed the behavior of the internal Buffer-to-String conversion 11577function. The current ACPI specification states that the contents 11578of the buffer are "converted to a string of two-character 11579hexadecimal numbers, each separated by a space". Unfortunately, 11580this definition is not backwards compatible with existing ACPI 1.0 11581implementations (although the behavior was not defined in the ACPI 115821.0 specification). The new behavior simply copies data from the 11583buffer to the string until a null character is found or the end of 11584the buffer is reached. The new String object is always null 11585terminated. This problem was seen during the generation of _BIF 11586battery data where incorrect strings were returned for battery 11587type, etc. This will also require an errata to the ACPI 11588specification. 11589 11590Renamed all instances of NATIVE_UINT and NATIVE_INT to 11591ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 11592 11593Copyright in all module headers (both Linux and non-Linux) has be 11594updated to 2003. 11595 11596Code and Data Size: Current core subsystem library sizes are shown 11597below. These are the code and data sizes for the acpica.lib 11598produced by the Microsoft Visual C++ 6.0 compiler, and these 11599values do not include any ACPI driver or OSPM code. The debug 11600version of the code includes the debug output trace mechanism and 11601has a much larger code and data size. Note that these values will 11602vary depending on the efficiency of the compiler and the compiler 11603options used during generation. 11604 11605 Previous Release 11606 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 11607 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 11608 Current Release: 11609 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 11610 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 11611 11612 116132) Linux 11614 11615Fixed an oops on module insertion/removal (Matthew Tippett) 11616 11617(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 11618 11619(2.5) Replace pr_debug (Randy Dunlap) 11620 11621(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 11622 11623(Both) Eliminate spawning of thread from timer callback, in favor 11624of schedule_work() 11625 11626(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 11627 11628(Both) Added define for Fixed Function HW region (Matthew Wilcox) 11629 11630(Both) Add missing statics to button.c (Pavel Machek) 11631 11632Several changes have been made to the source code translation 11633utility that generates the Linux Code in order to make the code 11634more "Linux-like": 11635 11636All typedefs on structs and unions have been removed in keeping 11637with the Linux coding style. 11638 11639Removed the non-Linux SourceSafe module revision number from each 11640module header. 11641 11642Completed major overhaul of symbols to be lowercased for linux. 11643Doubled the number of symbols that are lowercased. 11644 11645Fixed a problem where identifiers within procedure headers and 11646within quotes were not fully lower cased (they were left with a 11647starting capital.) 11648 11649Some C macros whose only purpose is to allow the generation of 16- 11650bit code are now completely removed in the Linux code, increasing 11651readability and maintainability. 11652 11653---------------------------------------- 11654 1165512 December 2002. Summary of changes for version 20021212. 11656 11657 116581) ACPI CA Core Subsystem: 11659 11660Fixed a problem where the creation of a zero-length AML Buffer 11661would cause a fault. 11662 11663Fixed a problem where a Buffer object that pointed to a static AML 11664buffer (in an ACPI table) could inadvertently be deleted, causing 11665memory corruption. 11666 11667Fixed a problem where a user buffer (passed in to the external 11668ACPI CA interfaces) could be overwritten if the buffer was too 11669small to complete the operation, causing memory corruption. 11670 11671Fixed a problem in the Buffer-to-String conversion code where a 11672string of length one was always returned, regardless of the size 11673of the input Buffer object. 11674 11675Removed the NATIVE_CHAR data type across the entire source due to 11676lack of need and lack of consistent use. 11677 11678Code and Data Size: Current core subsystem library sizes are shown 11679below. These are the code and data sizes for the acpica.lib 11680produced by the Microsoft Visual C++ 6.0 compiler, and these 11681values do not include any ACPI driver or OSPM code. The debug 11682version of the code includes the debug output trace mechanism and 11683has a much larger code and data size. Note that these values will 11684vary depending on the efficiency of the compiler and the compiler 11685options used during generation. 11686 11687 Previous Release 11688 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 11689 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 11690 Current Release: 11691 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 11692 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 11693 11694 11695---------------------------------------- 1169605 December 2002. Summary of changes for version 20021205. 11697 116981) ACPI CA Core Subsystem: 11699 11700Fixed a problem where a store to a String or Buffer object could 11701cause corruption of the DSDT if the object type being stored was 11702the same as the target object type and the length of the object 11703being stored was equal to or smaller than the original (existing) 11704target object. This was seen to cause corruption of battery _BIF 11705buffers if the _BIF method modified the buffer on the fly. 11706 11707Fixed a problem where an internal error was generated if a control 11708method invocation was used in an OperationRegion, Buffer, or 11709Package declaration. This was caused by the deferred parsing of 11710the control method and thus the deferred creation of the internal 11711method object. The solution to this problem was to create the 11712internal method object at the moment the method is encountered in 11713the first pass - so that subsequent references to the method will 11714able to obtain the required parameter count and thus properly 11715parse the method invocation. This problem presented itself as an 11716AE_AML_INTERNAL during the pass 1 parse phase during table load. 11717 11718Fixed a problem where the internal String object copy routine did 11719not always allocate sufficient memory for the target String object 11720and caused memory corruption. This problem was seen to cause 11721"Allocation already present in list!" errors as memory allocation 11722became corrupted. 11723 11724Implemented a new function for the evaluation of namespace objects 11725that allows the specification of the allowable return object 11726types. This simplifies a lot of code that checks for a return 11727object of one or more specific objects returned from the 11728evaluation (such as _STA, etc.) This may become and external 11729function if it would be useful to ACPI-related drivers. 11730 11731Completed another round of prefixing #defines with "ACPI_" for 11732clarity. 11733 11734Completed additional code restructuring to allow more modular 11735linking for iASL compiler and AcpiExec. Several files were split 11736creating new files. New files: nsparse.c dsinit.c evgpe.c 11737 11738Implemented an abort mechanism to terminate an executing control 11739method via the AML debugger. This feature is useful for debugging 11740control methods that depend (wait) for specific hardware 11741responses. 11742 11743Code and Data Size: Current core subsystem library sizes are shown 11744below. These are the code and data sizes for the acpica.lib 11745produced by the Microsoft Visual C++ 6.0 compiler, and these 11746values do not include any ACPI driver or OSPM code. The debug 11747version of the code includes the debug output trace mechanism and 11748has a much larger code and data size. Note that these values will 11749vary depending on the efficiency of the compiler and the compiler 11750options used during generation. 11751 11752 Previous Release 11753 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 11754 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 11755 Current Release: 11756 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 11757 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 11758 11759 117602) iASL Compiler/Disassembler 11761 11762Fixed a compiler code generation problem for "Interrupt" Resource 11763Descriptors. If specified in the ASL, the optional "Resource 11764Source Index" and "Resource Source" fields were not inserted into 11765the correct location within the AML resource descriptor, creating 11766an invalid descriptor. 11767 11768Fixed a disassembler problem for "Interrupt" resource descriptors. 11769The optional "Resource Source Index" and "Resource Source" fields 11770were ignored. 11771 11772 11773---------------------------------------- 1177422 November 2002. Summary of changes for version 20021122. 11775 11776 117771) ACPI CA Core Subsystem: 11778 11779Fixed a reported problem where an object stored to a Method Local 11780or Arg was not copied to a new object during the store - the 11781object pointer was simply copied to the Local/Arg. This caused 11782all subsequent operations on the Local/Arg to also affect the 11783original source of the store operation. 11784 11785Fixed a problem where a store operation to a Method Local or Arg 11786was not completed properly if the Local/Arg contained a reference 11787(from RefOf) to a named field. The general-purpose store-to- 11788namespace-node code is now used so that this case is handled 11789automatically. 11790 11791Fixed a problem where the internal object copy routine would cause 11792a protection fault if the object being copied was a Package and 11793contained either 1) a NULL package element or 2) a nested sub- 11794package. 11795 11796Fixed a problem with the GPE initialization that resulted from an 11797ambiguity in the ACPI specification. One section of the 11798specification states that both the address and length of the GPE 11799block must be zero if the block is not supported. Another section 11800implies that only the address need be zero if the block is not 11801supported. The code has been changed so that both the address and 11802the length must be non-zero to indicate a valid GPE block (i.e., 11803if either the address or the length is zero, the GPE block is 11804invalid.) 11805 11806Code and Data Size: Current core subsystem library sizes are shown 11807below. These are the code and data sizes for the acpica.lib 11808produced by the Microsoft Visual C++ 6.0 compiler, and these 11809values do not include any ACPI driver or OSPM code. The debug 11810version of the code includes the debug output trace mechanism and 11811has a much larger code and data size. Note that these values will 11812vary depending on the efficiency of the compiler and the compiler 11813options used during generation. 11814 11815 Previous Release 11816 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 11817 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 11818 Current Release: 11819 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 11820 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 11821 11822 118232) Linux 11824 11825Cleaned up EC driver. Exported an external EC read/write 11826interface. By going through this, other drivers (most notably 11827sonypi) will be able to serialize access to the EC. 11828 11829 118303) iASL Compiler/Disassembler 11831 11832Implemented support to optionally generate include files for both 11833ASM and C (the -i switch). This simplifies BIOS development by 11834automatically creating include files that contain external 11835declarations for the symbols that are created within the 11836 11837(optionally generated) ASM and C AML source files. 11838 11839 11840---------------------------------------- 1184115 November 2002. Summary of changes for version 20021115. 11842 118431) ACPI CA Core Subsystem: 11844 11845Fixed a memory leak problem where an error during resolution of 11846 11847method arguments during a method invocation from another method 11848failed to cleanup properly by deleting all successfully resolved 11849argument objects. 11850 11851Fixed a problem where the target of the Index() operator was not 11852correctly constructed if the source object was a package. This 11853problem has not been detected because the use of a target operand 11854with Index() is very rare. 11855 11856Fixed a problem with the Index() operator where an attempt was 11857made to delete the operand objects twice. 11858 11859Fixed a problem where an attempt was made to delete an operand 11860twice during execution of the CondRefOf() operator if the target 11861did not exist. 11862 11863Implemented the first of perhaps several internal create object 11864functions that create and initialize a specific object type. This 11865consolidates duplicated code wherever the object is created, thus 11866shrinking the size of the subsystem. 11867 11868Implemented improved debug/error messages for errors that occur 11869during nested method invocations. All executing method pathnames 11870are displayed (with the error) as the call stack is unwound - thus 11871simplifying debug. 11872 11873Fixed a problem introduced in the 10/02 release that caused 11874premature deletion of a buffer object if a buffer was used as an 11875ASL operand where an integer operand is required (Thus causing an 11876implicit object conversion from Buffer to Integer.) The change in 11877the 10/02 release was attempting to fix a memory leak (albeit 11878incorrectly.) 11879 11880Code and Data Size: Current core subsystem library sizes are shown 11881below. These are the code and data sizes for the acpica.lib 11882produced by the Microsoft Visual C++ 6.0 compiler, and these 11883values do not include any ACPI driver or OSPM code. The debug 11884version of the code includes the debug output trace mechanism and 11885has a much larger code and data size. Note that these values will 11886vary depending on the efficiency of the compiler and the compiler 11887options used during generation. 11888 11889 Previous Release 11890 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 11891 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 11892 Current Release: 11893 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 11894 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 11895 11896 118972) Linux 11898 11899Changed the implementation of the ACPI semaphores to use down() 11900instead of down_interruptable(). It is important that the 11901execution of ACPI control methods not be interrupted by signals. 11902Methods must run to completion, or the system may be left in an 11903unknown/unstable state. 11904 11905Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 11906(Shawn Starr) 11907 11908 119093) iASL Compiler/Disassembler 11910 11911 11912Changed the default location of output files. All output files 11913are now placed in the current directory by default instead of in 11914the directory of the source file. This change may affect some 11915existing makefiles, but it brings the behavior of the compiler in 11916line with other similar tools. The location of the output files 11917can be overridden with the -p command line switch. 11918 11919 11920---------------------------------------- 1192111 November 2002. Summary of changes for version 20021111. 11922 11923 119240) ACPI Specification 2.0B is released and is now available at: 11925http://www.acpi.info/index.html 11926 11927 119281) ACPI CA Core Subsystem: 11929 11930Implemented support for the ACPI 2.0 SMBus Operation Regions. 11931This includes the early detection and handoff of the request to 11932the SMBus region handler (avoiding all of the complex field 11933support code), and support for the bidirectional return packet 11934from an SMBus write operation. This paves the way for the 11935development of SMBus drivers in each host operating system. 11936 11937Fixed a problem where the semaphore WAIT_FOREVER constant was 11938defined as 32 bits, but must be 16 bits according to the ACPI 11939specification. This had the side effect of causing ASL 11940Mutex/Event timeouts even though the ASL code requested a wait 11941forever. Changed all internal references to the ACPI timeout 11942parameter to 16 bits to prevent future problems. Changed the name 11943of WAIT_FOREVER to ACPI_WAIT_FOREVER. 11944 11945Code and Data Size: Current core subsystem library sizes are shown 11946below. These are the code and data sizes for the acpica.lib 11947produced by the Microsoft Visual C++ 6.0 compiler, and these 11948values do not include any ACPI driver or OSPM code. The debug 11949version of the code includes the debug output trace mechanism and 11950has a much larger code and data size. Note that these values will 11951vary depending on the efficiency of the compiler and the compiler 11952options used during generation. 11953 11954 Previous Release 11955 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 11956 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 11957 Current Release: 11958 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 11959 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 11960 11961 119622) Linux 11963 11964Module loading/unloading fixes (John Cagle) 11965 11966 119673) iASL Compiler/Disassembler 11968 11969Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 11970 11971Implemented support for the disassembly of all SMBus protocol 11972keywords (SMBQuick, SMBWord, etc.) 11973 11974---------------------------------------- 1197501 November 2002. Summary of changes for version 20021101. 11976 11977 119781) ACPI CA Core Subsystem: 11979 11980Fixed a problem where platforms that have a GPE1 block but no GPE0 11981block were not handled correctly. This resulted in a "GPE 11982overlap" error message. GPE0 is no longer required. 11983 11984Removed code added in the previous release that inserted nodes 11985into the namespace in alphabetical order. This caused some side- 11986effects on various machines. The root cause of the problem is 11987still under investigation since in theory, the internal ordering 11988of the namespace nodes should not matter. 11989 11990 11991Enhanced error reporting for the case where a named object is not 11992found during control method execution. The full ACPI namepath 11993(name reference) of the object that was not found is displayed in 11994this case. 11995 11996Note: as a result of the overhaul of the namespace object types in 11997the previous release, the namespace nodes for the predefined 11998scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 11999instead of ACPI_TYPE_ANY. This simplifies the namespace 12000management code but may affect code that walks the namespace tree 12001looking for specific object types. 12002 12003Code and Data Size: Current core subsystem library sizes are shown 12004below. These are the code and data sizes for the acpica.lib 12005produced by the Microsoft Visual C++ 6.0 compiler, and these 12006values do not include any ACPI driver or OSPM code. The debug 12007version of the code includes the debug output trace mechanism and 12008has a much larger code and data size. Note that these values will 12009vary depending on the efficiency of the compiler and the compiler 12010options used during generation. 12011 12012 Previous Release 12013 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12014 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12015 Current Release: 12016 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12017 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 12018 12019 120202) Linux 12021 12022Fixed a problem introduced in the previous release where the 12023Processor and Thermal objects were not recognized and installed in 12024/proc. This was related to the scope type change described above. 12025 12026 120273) iASL Compiler/Disassembler 12028 12029Implemented the -g option to get all of the required ACPI tables 12030from the registry and save them to files (Windows version of the 12031compiler only.) The required tables are the FADT, FACS, and DSDT. 12032 12033Added ACPI table checksum validation during table disassembly in 12034order to catch corrupted tables. 12035 12036 12037---------------------------------------- 1203822 October 2002. Summary of changes for version 20021022. 12039 120401) ACPI CA Core Subsystem: 12041 12042Implemented a restriction on the Scope operator that the target 12043must already exist in the namespace at the time the operator is 12044encountered (during table load or method execution). In other 12045words, forward references are not allowed and Scope() cannot 12046create a new object. This changes the previous behavior where the 12047interpreter would create the name if not found. This new behavior 12048correctly enables the search-to-root algorithm during namespace 12049lookup of the target name. Because of this upsearch, this fixes 12050the known Compaq _SB_.OKEC problem and makes both the AML 12051interpreter and iASL compiler compatible with other ACPI 12052implementations. 12053 12054Completed a major overhaul of the internal ACPI object types for 12055the ACPI Namespace and the associated operand objects. Many of 12056these types had become obsolete with the introduction of the two- 12057pass namespace load. This cleanup simplifies the code and makes 12058the entire namespace load mechanism much clearer and easier to 12059understand. 12060 12061Improved debug output for tracking scope opening/closing to help 12062diagnose scoping issues. The old scope name as well as the new 12063scope name are displayed. Also improved error messages for 12064problems with ASL Mutex objects and error messages for GPE 12065problems. 12066 12067Cleaned up the namespace dump code, removed obsolete code. 12068 12069All string output (for all namespace/object dumps) now uses the 12070common ACPI string output procedure which handles escapes properly 12071and does not emit non-printable characters. 12072 12073Fixed some issues with constants in the 64-bit version of the 12074local C library (utclib.c) 12075 12076 120772) Linux 12078 12079EC Driver: No longer attempts to acquire the Global Lock at 12080interrupt level. 12081 12082 120833) iASL Compiler/Disassembler 12084 12085Implemented ACPI 2.0B grammar change that disallows all Type 1 and 120862 opcodes outside of a control method. This means that the 12087"executable" operators (versus the "namespace" operators) cannot 12088be used at the table level; they can only be used within a control 12089method. 12090 12091Implemented the restriction on the Scope() operator where the 12092target must already exist in the namespace at the time the 12093operator is encountered (during ASL compilation). In other words, 12094forward references are not allowed and Scope() cannot create a new 12095object. This makes the iASL compiler compatible with other ACPI 12096implementations and makes the Scope() implementation adhere to the 12097ACPI specification. 12098 12099Fixed a problem where namepath optimization for the Alias operator 12100was optimizing the wrong path (of the two namepaths.) This caused 12101a "Missing alias link" error message. 12102 12103Fixed a problem where an "unknown reserved name" warning could be 12104incorrectly generated for names like "_SB" when the trailing 12105underscore is not used in the original ASL. 12106 12107Fixed a problem where the reserved name check did not handle 12108NamePaths with multiple NameSegs correctly. The first nameseg of 12109the NamePath was examined instead of the last NameSeg. 12110 12111 12112---------------------------------------- 12113 1211402 October 2002. Summary of changes for this release. 12115 12116 121171) ACPI CA Core Subsystem version 20021002: 12118 12119Fixed a problem where a store/copy of a string to an existing 12120string did not always set the string length properly in the String 12121object. 12122 12123Fixed a reported problem with the ToString operator where the 12124behavior was identical to the ToHexString operator instead of just 12125simply converting a raw buffer to a string data type. 12126 12127Fixed a problem where CopyObject and the other "explicit" 12128conversion operators were not updating the internal namespace node 12129type as part of the store operation. 12130 12131Fixed a memory leak during implicit source operand conversion 12132where the original object was not deleted if it was converted to a 12133new object of a different type. 12134 12135Enhanced error messages for all problems associated with namespace 12136lookups. Common procedure generates and prints the lookup name as 12137well as the formatted status. 12138 12139Completed implementation of a new design for the Alias support 12140within the namespace. The existing design did not handle the case 12141where a new object was assigned to one of the two names due to the 12142use of an explicit conversion operator, resulting in the two names 12143pointing to two different objects. The new design simply points 12144the Alias name to the original name node - not to the object. 12145This results in a level of indirection that must be handled in the 12146name resolution mechanism. 12147 12148Code and Data Size: Current core subsystem library sizes are shown 12149below. These are the code and data sizes for the acpica.lib 12150produced by the Microsoft Visual C++ 6.0 compiler, and these 12151values do not include any ACPI driver or OSPM code. The debug 12152version of the code includes the debug output trace mechanism and 12153has a larger code and data size. Note that these values will vary 12154depending on the efficiency of the compiler and the compiler 12155options used during generation. 12156 12157 Previous Release 12158 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12159 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12160 Current Release: 12161 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 12162 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 12163 12164 121652) Linux 12166 12167Initialize thermal driver's timer before it is used. (Knut 12168Neumann) 12169 12170Allow handling negative celsius values. (Kochi Takayoshi) 12171 12172Fix thermal management and make trip points. R/W (Pavel Machek) 12173 12174Fix /proc/acpi/sleep. (P. Christeas) 12175 12176IA64 fixes. (David Mosberger) 12177 12178Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 12179 12180Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 12181Brodowski) 12182 12183 121843) iASL Compiler/Disassembler 12185 12186Clarified some warning/error messages. 12187 12188 12189---------------------------------------- 1219018 September 2002. Summary of changes for this release. 12191 12192 121931) ACPI CA Core Subsystem version 20020918: 12194 12195Fixed a reported problem with reference chaining (via the Index() 12196and RefOf() operators) in the ObjectType() and SizeOf() operators. 12197The definition of these operators includes the dereferencing of 12198all chained references to return information on the base object. 12199 12200Fixed a problem with stores to indexed package elements - the 12201existing code would not complete the store if an "implicit 12202conversion" was not performed. In other words, if the existing 12203object (package element) was to be replaced completely, the code 12204didn't handle this case. 12205 12206Relaxed typechecking on the ASL "Scope" operator to allow the 12207target name to refer to an object of type Integer, String, or 12208Buffer, in addition to the scoping object types (Device, 12209predefined Scopes, Processor, PowerResource, and ThermalZone.) 12210This allows existing AML code that has workarounds for a bug in 12211Windows to function properly. A warning is issued, however. This 12212affects both the AML interpreter and the iASL compiler. Below is 12213an example of this type of ASL code: 12214 12215 Name(DEB,0x00) 12216 Scope(DEB) 12217 { 12218 12219Fixed some reported problems with 64-bit integer support in the 12220local implementation of C library functions (clib.c) 12221 12222 122232) Linux 12224 12225Use ACPI fix map region instead of IOAPIC region, since it is 12226undefined in non-SMP. 12227 12228Ensure that the SCI has the proper polarity and trigger, even on 12229systems that do not have an interrupt override entry in the MADT. 12230 122312.5 big driver reorganization (Pat Mochel) 12232 12233Use early table mapping code from acpitable.c (Andi Kleen) 12234 12235New blacklist entries (Andi Kleen) 12236 12237Blacklist improvements. Split blacklist code out into a separate 12238file. Move checking the blacklist to very early. Previously, we 12239would use ACPI tables, and then halfway through init, check the 12240blacklist -- too late. Now, it's early enough to completely fall- 12241back to non-ACPI. 12242 12243 122443) iASL Compiler/Disassembler version 20020918: 12245 12246Fixed a problem where the typechecking code didn't know that an 12247alias could point to a method. In other words, aliases were not 12248being dereferenced during typechecking. 12249 12250 12251---------------------------------------- 1225229 August 2002. Summary of changes for this release. 12253 122541) ACPI CA Core Subsystem Version 20020829: 12255 12256If the target of a Scope() operator already exists, it must be an 12257object type that actually opens a scope -- such as a Device, 12258Method, Scope, etc. This is a fatal runtime error. Similar error 12259check has been added to the iASL compiler also. 12260 12261Tightened up the namespace load to disallow multiple names in the 12262same scope. This previously was allowed if both objects were of 12263the same type. (i.e., a lookup was the same as entering a new 12264name). 12265 12266 122672) Linux 12268 12269Ensure that the ACPI interrupt has the proper trigger and 12270polarity. 12271 12272local_irq_disable is extraneous. (Matthew Wilcox) 12273 12274Make "acpi=off" actually do what it says, and not use the ACPI 12275interpreter *or* the tables. 12276 12277Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 12278Takayoshi) 12279 12280 122813) iASL Compiler/Disassembler Version 20020829: 12282 12283Implemented namepath optimization for name declarations. For 12284example, a declaration like "Method (\_SB_.ABCD)" would get 12285optimized to "Method (ABCD)" if the declaration is within the 12286\_SB_ scope. This optimization is in addition to the named 12287reference path optimization first released in the previous 12288version. This would seem to complete all possible optimizations 12289for namepaths within the ASL/AML. 12290 12291If the target of a Scope() operator already exists, it must be an 12292object type that actually opens a scope -- such as a Device, 12293Method, Scope, etc. 12294 12295Implemented a check and warning for unreachable code in the same 12296block below a Return() statement. 12297 12298Fixed a problem where the listing file was not generated if the 12299compiler aborted if the maximum error count was exceeded (200). 12300 12301Fixed a problem where the typechecking of method return values was 12302broken. This includes the check for a return value when the 12303method is invoked as a TermArg (a return value is expected.) 12304 12305Fixed a reported problem where EOF conditions during a quoted 12306string or comment caused a fault. 12307 12308 12309---------------------------------------- 1231015 August 2002. Summary of changes for this release. 12311 123121) ACPI CA Core Subsystem Version 20020815: 12313 12314Fixed a reported problem where a Store to a method argument that 12315contains a reference did not perform the indirect store correctly. 12316This problem was created during the conversion to the new 12317reference object model - the indirect store to a method argument 12318code was not updated to reflect the new model. 12319 12320Reworked the ACPI mode change code to better conform to ACPI 2.0, 12321handle corner cases, and improve code legibility (Kochi Takayoshi) 12322 12323Fixed a problem with the pathname parsing for the carat (^) 12324prefix. The heavy use of the carat operator by the new namepath 12325optimization in the iASL compiler uncovered a problem with the AML 12326interpreter handling of this prefix. In the case where one or 12327more carats precede a single nameseg, the nameseg was treated as 12328standalone and the search rule (to root) was inadvertently 12329applied. This could cause both the iASL compiler and the 12330interpreter to find the wrong object or to miss the error that 12331should occur if the object does not exist at that exact pathname. 12332 12333Found and fixed the problem where the HP Pavilion DSDT would not 12334load. This was a relatively minor tweak to the table loading code 12335(a problem caused by the unexpected encounter with a method 12336invocation not within a control method), but it does not solve the 12337overall issue of the execution of AML code at the table level. 12338This investigation is still ongoing. 12339 12340Code and Data Size: Current core subsystem library sizes are shown 12341below. These are the code and data sizes for the acpica.lib 12342produced by the Microsoft Visual C++ 6.0 compiler, and these 12343values do not include any ACPI driver or OSPM code. The debug 12344version of the code includes the debug output trace mechanism and 12345has a larger code and data size. Note that these values will vary 12346depending on the efficiency of the compiler and the compiler 12347options used during generation. 12348 12349 Previous Release 12350 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 12351 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 12352 Current Release: 12353 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 12354 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 12355 12356 123572) Linux 12358 12359Remove redundant slab.h include (Brad Hards) 12360 12361Fix several bugs in thermal.c (Herbert Nachtnebel) 12362 12363Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 12364 12365Change acpi_system_suspend to use updated irq functions (Pavel 12366Machek) 12367 12368Export acpi_get_firmware_table (Matthew Wilcox) 12369 12370Use proper root proc entry for ACPI (Kochi Takayoshi) 12371 12372Fix early-boot table parsing (Bjorn Helgaas) 12373 12374 123753) iASL Compiler/Disassembler 12376 12377Reworked the compiler options to make them more consistent and to 12378use two-letter options where appropriate. We were running out of 12379sensible letters. This may break some makefiles, so check the 12380current options list by invoking the compiler with no parameters. 12381 12382Completed the design and implementation of the ASL namepath 12383optimization option for the compiler. This option optimizes all 12384references to named objects to the shortest possible path. The 12385first attempt tries to utilize a single nameseg (4 characters) and 12386the "search-to-root" algorithm used by the interpreter. If that 12387cannot be used (because either the name is not in the search path 12388or there is a conflict with another object with the same name), 12389the pathname is optimized using the carat prefix (usually a 12390shorter string than specifying the entire path from the root.) 12391 12392Implemented support to obtain the DSDT from the Windows registry 12393(when the disassembly option is specified with no input file). 12394Added this code as the implementation for AcpiOsTableOverride in 12395the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 12396utility) to scan memory for the DSDT to the AcpiOsTableOverride 12397function in the DOS OSL to make the disassembler truly OS 12398independent. 12399 12400Implemented a new option to disassemble and compile in one step. 12401When used without an input filename, this option will grab the 12402DSDT from the local machine, disassemble it, and compile it in one 12403step. 12404 12405Added a warning message for invalid escapes (a backslash followed 12406by any character other than the allowable escapes). This catches 12407the quoted string error "\_SB_" (which should be "\\_SB_" ). 12408 12409Also, there are numerous instances in the ACPI specification where 12410this error occurs. 12411 12412Added a compiler option to disable all optimizations. This is 12413basically the "compatibility mode" because by using this option, 12414the AML code will come out exactly the same as other ASL 12415compilers. 12416 12417Added error messages for incorrectly ordered dependent resource 12418functions. This includes: missing EndDependentFn macro at end of 12419dependent resource list, nested dependent function macros (both 12420start and end), and missing StartDependentFn macro. These are 12421common errors that should be caught at compile time. 12422 12423Implemented _OSI support for the disassembler and compiler. _OSI 12424must be included in the namespace for proper disassembly (because 12425the disassembler must know the number of arguments.) 12426 12427Added an "optimization" message type that is optional (off by 12428default). This message is used for all optimizations - including 12429constant folding, integer optimization, and namepath optimization. 12430 12431---------------------------------------- 1243225 July 2002. Summary of changes for this release. 12433 12434 124351) ACPI CA Core Subsystem Version 20020725: 12436 12437The AML Disassembler has been enhanced to produce compilable ASL 12438code and has been integrated into the iASL compiler (see below) as 12439well as the single-step disassembly for the AML debugger and the 12440disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 12441resource templates and macros are fully supported. The 12442disassembler has been tested on over 30 different AML files, 12443producing identical AML when the resulting disassembled ASL file 12444is recompiled with the same ASL compiler. 12445 12446Modified the Resource Manager to allow zero interrupts and zero 12447dma channels during the GetCurrentResources call. This was 12448causing problems on some platforms. 12449 12450Added the AcpiOsRedirectOutput interface to the OSL to simplify 12451output redirection for the AcpiOsPrintf and AcpiOsVprintf 12452interfaces. 12453 12454Code and Data Size: Current core subsystem library sizes are shown 12455below. These are the code and data sizes for the acpica.lib 12456produced by the Microsoft Visual C++ 6.0 compiler, and these 12457values do not include any ACPI driver or OSPM code. The debug 12458version of the code includes the debug output trace mechanism and 12459has a larger code and data size. Note that these values will vary 12460depending on the efficiency of the compiler and the compiler 12461options used during generation. 12462 12463 Previous Release 12464 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 12465 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 12466 Current Release: 12467 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 12468 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 12469 12470 124712) Linux 12472 12473Fixed a panic in the EC driver (Dominik Brodowski) 12474 12475Implemented checksum of the R/XSDT itself during Linux table scan 12476(Richard Schaal) 12477 12478 124793) iASL compiler 12480 12481The AML disassembler is integrated into the compiler. The "-d" 12482option invokes the disassembler to completely disassemble an 12483input AML file, producing as output a text ASL file with the 12484extension ".dsl" (to avoid name collisions with existing .asl 12485source files.) A future enhancement will allow the disassembler 12486to obtain the BIOS DSDT from the registry under Windows. 12487 12488Fixed a problem with the VendorShort and VendorLong resource 12489descriptors where an invalid AML sequence was created. 12490 12491Implemented a fix for BufferData term in the ASL parser. It was 12492inadvertently defined twice, allowing invalid syntax to pass and 12493causing reduction conflicts. 12494 12495Fixed a problem where the Ones opcode could get converted to a 12496value of zero if "Ones" was used where a byte, word or dword value 12497was expected. The 64-bit value is now truncated to the correct 12498size with the correct value. 12499 12500 12501 12502---------------------------------------- 1250302 July 2002. Summary of changes for this release. 12504 12505 125061) ACPI CA Core Subsystem Version 20020702: 12507 12508The Table Manager code has been restructured to add several new 12509features. Tables that are not required by the core subsystem 12510(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 12511validated in any way and are returned from AcpiGetFirmwareTable if 12512requested. The AcpiOsTableOverride interface is now called for 12513each table that is loaded by the subsystem in order to allow the 12514host to override any table it chooses. Previously, only the DSDT 12515could be overridden. Added one new files, tbrsdt.c and 12516tbgetall.c. 12517 12518Fixed a problem with the conversion of internal package objects to 12519external objects (when a package is returned from a control 12520method.) The return buffer length was set to zero instead of the 12521proper length of the package object. 12522 12523Fixed a reported problem with the use of the RefOf and DeRefOf 12524operators when passing reference arguments to control methods. A 12525new type of Reference object is used internally for references 12526produced by the RefOf operator. 12527 12528Added additional error messages in the Resource Manager to explain 12529AE_BAD_DATA errors when they occur during resource parsing. 12530 12531Split the AcpiEnableSubsystem into two primitives to enable a 12532finer granularity initialization sequence. These two calls should 12533be called in this order: AcpiEnableSubsystem (flags), 12534AcpiInitializeObjects (flags). The flags parameter remains the 12535same. 12536 12537 125382) Linux 12539 12540Updated the ACPI utilities module to understand the new style of 12541fully resolved package objects that are now returned from the core 12542subsystem. This eliminates errors of the form: 12543 12544 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 12545 acpi_utils-0430 [145] acpi_evaluate_reference: 12546 Invalid element in package (not a device reference) 12547 12548The method evaluation utility uses the new buffer allocation 12549scheme instead of calling AcpiEvaluate Object twice. 12550 12551Added support for ECDT. This allows the use of the Embedded 12552 12553Controller before the namespace has been fully initialized, which 12554is necessary for ACPI 2.0 support, and for some laptops to 12555initialize properly. (Laptops using ECDT are still rare, so only 12556limited testing was performed of the added functionality.) 12557 12558Fixed memory leaks in the EC driver. 12559 12560Eliminated a brittle code structure in acpi_bus_init(). 12561 12562Eliminated the acpi_evaluate() helper function in utils.c. It is 12563no longer needed since acpi_evaluate_object can optionally 12564allocate memory for the return object. 12565 12566Implemented fix for keyboard hang when getting battery readings on 12567some systems (Stephen White) 12568 12569PCI IRQ routing update (Dominik Brodowski) 12570 12571Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 12572support 12573 12574---------------------------------------- 1257511 June 2002. Summary of changes for this release. 12576 12577 125781) ACPI CA Core Subsystem Version 20020611: 12579 12580Fixed a reported problem where constants such as Zero and One 12581appearing within _PRT packages were not handled correctly within 12582the resource manager code. Originally reported against the ASL 12583compiler because the code generator now optimizes integers to 12584their minimal AML representation (i.e. AML constants if possible.) 12585The _PRT code now handles all AML constant opcodes correctly 12586(Zero, One, Ones, Revision). 12587 12588Fixed a problem with the Concatenate operator in the AML 12589interpreter where a buffer result object was incorrectly marked as 12590not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 12591 12592All package sub-objects are now fully resolved before they are 12593returned from the external ACPI interfaces. This means that name 12594strings are resolved to object handles, and constant operators 12595(Zero, One, Ones, Revision) are resolved to Integers. 12596 12597Implemented immediate resolution of the AML Constant opcodes 12598(Zero, One, Ones, Revision) to Integer objects upon detection 12599within the AML stream. This has simplified and reduced the 12600generated code size of the subsystem by eliminating about 10 12601switch statements for these constants (which previously were 12602contained in Reference objects.) The complicating issues are that 12603the Zero opcode is used as a "placeholder" for unspecified 12604optional target operands and stores to constants are defined to be 12605no-ops. 12606 12607Code and Data Size: Current core subsystem library sizes are shown 12608below. These are the code and data sizes for the acpica.lib 12609produced by the Microsoft Visual C++ 6.0 compiler, and these 12610values do not include any ACPI driver or OSPM code. The debug 12611version of the code includes the debug output trace mechanism and 12612has a larger code and data size. Note that these values will vary 12613depending on the efficiency of the compiler and the compiler 12614options used during generation. 12615 12616 Previous Release 12617 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 12618 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 12619 Current Release: 12620 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 12621 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 12622 12623 126242) Linux 12625 12626 12627Added preliminary support for obtaining _TRA data for PCI root 12628bridges (Bjorn Helgaas). 12629 12630 126313) iASL Compiler Version X2046: 12632 12633Fixed a problem where the "_DDN" reserved name was defined to be a 12634control method with one argument. There are no arguments, and 12635_DDN does not have to be a control method. 12636 12637Fixed a problem with the Linux version of the compiler where the 12638source lines printed with error messages were the wrong lines. 12639This turned out to be the "LF versus CR/LF" difference between 12640Windows and Unix. This appears to be the longstanding issue 12641concerning listing output and error messages. 12642 12643Fixed a problem with the Linux version of compiler where opcode 12644names within error messages were wrong. This was caused by a 12645slight difference in the output of the Flex tool on Linux versus 12646Windows. 12647 12648Fixed a problem with the Linux compiler where the hex output files 12649contained some garbage data caused by an internal buffer overrun. 12650 12651 12652---------------------------------------- 1265317 May 2002. Summary of changes for this release. 12654 12655 126561) ACPI CA Core Subsystem Version 20020517: 12657 12658Implemented a workaround to an BIOS bug discovered on the HP 12659OmniBook where the FADT revision number and the table size are 12660inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 12661behavior is to fallback to using only the ACPI 1.0 fields of the 12662FADT if the table is too small to be a ACPI 2.0 table as claimed 12663by the revision number. Although this is a BIOS bug, this is a 12664case where the workaround is simple enough and with no side 12665effects, so it seemed prudent to add it. A warning message is 12666issued, however. 12667 12668Implemented minimum size checks for the fixed-length ACPI tables - 12669- the FADT and FACS, as well as consistency checks between the 12670revision number and the table size. 12671 12672Fixed a reported problem in the table override support where the 12673new table pointer was incorrectly treated as a physical address 12674instead of a logical address. 12675 12676Eliminated the use of the AE_AML_ERROR exception and replaced it 12677with more descriptive codes. 12678 12679Fixed a problem where an exception would occur if an ASL Field was 12680defined with no named Field Units underneath it (used by some 12681index fields). 12682 12683Code and Data Size: Current core subsystem library sizes are shown 12684below. These are the code and data sizes for the acpica.lib 12685produced by the Microsoft Visual C++ 6.0 compiler, and these 12686values do not include any ACPI driver or OSPM code. The debug 12687version of the code includes the debug output trace mechanism and 12688has a larger code and data size. Note that these values will vary 12689depending on the efficiency of the compiler and the compiler 12690options used during generation. 12691 12692 Previous Release 12693 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 12694 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 12695 Current Release: 12696 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 12697 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 12698 12699 12700 127012) Linux 12702 12703Much work done on ACPI init (MADT and PCI IRQ routing support). 12704(Paul D. and Dominik Brodowski) 12705 12706Fix PCI IRQ-related panic on boot (Sam Revitch) 12707 12708Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 12709 12710Fix "MHz" typo (Dominik Brodowski) 12711 12712Fix RTC year 2000 issue (Dominik Brodowski) 12713 12714Preclude multiple button proc entries (Eric Brunet) 12715 12716Moved arch-specific code out of include/platform/aclinux.h 12717 127183) iASL Compiler Version X2044: 12719 12720Implemented error checking for the string used in the EISAID macro 12721(Usually used in the definition of the _HID object.) The code now 12722strictly enforces the PnP format - exactly 7 characters, 3 12723uppercase letters and 4 hex digits. 12724 12725If a raw string is used in the definition of the _HID object 12726(instead of the EISAID macro), the string must contain all 12727alphanumeric characters (e.g., "*PNP0011" is not allowed because 12728of the asterisk.) 12729 12730Implemented checking for invalid use of ACPI reserved names for 12731most of the name creation operators (Name, Device, Event, Mutex, 12732OperationRegion, PowerResource, Processor, and ThermalZone.) 12733Previously, this check was only performed for control methods. 12734 12735Implemented an additional check on the Name operator to emit an 12736error if a reserved name that must be implemented in ASL as a 12737control method is used. We know that a reserved name must be a 12738method if it is defined with input arguments. 12739 12740The warning emitted when a namespace object reference is not found 12741during the cross reference phase has been changed into an error. 12742The "External" directive should be used for names defined in other 12743modules. 12744 12745 127464) Tools and Utilities 12747 12748The 16-bit tools (adump16 and aexec16) have been regenerated and 12749tested. 12750 12751Fixed a problem with the output of both acpidump and adump16 where 12752the indentation of closing parentheses and brackets was not 12753 12754aligned properly with the parent block. 12755 12756 12757---------------------------------------- 1275803 May 2002. Summary of changes for this release. 12759 12760 127611) ACPI CA Core Subsystem Version 20020503: 12762 12763Added support a new OSL interface that allows the host operating 12764 12765system software to override the DSDT found in the firmware - 12766AcpiOsTableOverride. With this interface, the OSL can examine the 12767version of the firmware DSDT and replace it with a different one 12768if desired. 12769 12770Added new external interfaces for accessing ACPI registers from 12771device drivers and other system software - AcpiGetRegister and 12772AcpiSetRegister. This was simply an externalization of the 12773existing AcpiHwBitRegister interfaces. 12774 12775Fixed a regression introduced in the previous build where the 12776ASL/AML CreateField operator always returned an error, 12777"destination must be a NS Node". 12778 12779Extended the maximum time (before failure) to successfully enable 12780ACPI mode to 3 seconds. 12781 12782Code and Data Size: Current core subsystem library sizes are shown 12783below. These are the code and data sizes for the acpica.lib 12784produced by the Microsoft Visual C++ 6.0 compiler, and these 12785values do not include any ACPI driver or OSPM code. The debug 12786version of the code includes the debug output trace mechanism and 12787has a larger code and data size. Note that these values will vary 12788depending on the efficiency of the compiler and the compiler 12789options used during generation. 12790 12791 Previous Release 12792 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 12793 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 12794 Current Release: 12795 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 12796 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 12797 12798 127992) Linux 12800 12801Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 12802free. While 3 out of 4 of our in-house systems work fine, the last 12803one still hangs when testing the LAPIC timer. 12804 12805Renamed many files in 2.5 kernel release to omit "acpi_" from the 12806name. 12807 12808Added warning on boot for Presario 711FR. 12809 12810Sleep improvements (Pavel Machek) 12811 12812ACPI can now be built without CONFIG_PCI enabled. 12813 12814IA64: Fixed memory map functions (JI Lee) 12815 12816 128173) iASL Compiler Version X2043: 12818 12819Added support to allow the compiler to be integrated into the MS 12820VC++ development environment for one-button compilation of single 12821files or entire projects -- with error-to-source-line mapping. 12822 12823Implemented support for compile-time constant folding for the 12824Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 12825specification. This allows the ASL writer to use expressions 12826instead of Integer/Buffer/String constants in terms that must 12827evaluate to constants at compile time and will also simplify the 12828emitted AML in any such sub-expressions that can be folded 12829(evaluated at compile-time.) This increases the size of the 12830compiler significantly because a portion of the ACPI CA AML 12831interpreter is included within the compiler in order to pre- 12832evaluate constant expressions. 12833 12834 12835Fixed a problem with the "Unicode" ASL macro that caused the 12836compiler to fault. (This macro is used in conjunction with the 12837_STR reserved name.) 12838 12839Implemented an AML opcode optimization to use the Zero, One, and 12840Ones opcodes where possible to further reduce the size of integer 12841constants and thus reduce the overall size of the generated AML 12842code. 12843 12844Implemented error checking for new reserved terms for ACPI version 128452.0A. 12846 12847Implemented the -qr option to display the current list of ACPI 12848reserved names known to the compiler. 12849 12850Implemented the -qc option to display the current list of ASL 12851operators that are allowed within constant expressions and can 12852therefore be folded at compile time if the operands are constants. 12853 12854 128554) Documentation 12856 12857Updated the Programmer's Reference for new interfaces, data types, 12858and memory allocation model options. 12859 12860Updated the iASL Compiler User Reference to apply new format and 12861add information about new features and options. 12862 12863---------------------------------------- 1286419 April 2002. Summary of changes for this release. 12865 128661) ACPI CA Core Subsystem Version 20020419: 12867 12868The source code base for the Core Subsystem has been completely 12869cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 12870versions. The Lint option files used are included in the 12871/acpi/generate/lint directory. 12872 12873Implemented enhanced status/error checking across the entire 12874Hardware manager subsystem. Any hardware errors (reported from 12875the OSL) are now bubbled up and will abort a running control 12876method. 12877 12878 12879Fixed a problem where the per-ACPI-table integer width (32 or 64) 12880was stored only with control method nodes, causing a fault when 12881non-control method code was executed during table loading. The 12882solution implemented uses a global variable to indicate table 12883width across the entire ACPI subsystem. Therefore, ACPI CA does 12884not support mixed integer widths across different ACPI tables 12885(DSDT, SSDT). 12886 12887Fixed a problem where NULL extended fields (X fields) in an ACPI 128882.0 ACPI FADT caused the table load to fail. Although the 12889existing ACPI specification is a bit fuzzy on this topic, the new 12890behavior is to fall back on a ACPI 1.0 field if the corresponding 12891ACPI 2.0 X field is zero (even though the table revision indicates 12892a full ACPI 2.0 table.) The ACPI specification will be updated to 12893clarify this issue. 12894 12895Fixed a problem with the SystemMemory operation region handler 12896where memory was always accessed byte-wise even if the AML- 12897specified access width was larger than a byte. This caused 12898problems on systems with memory-mapped I/O. Memory is now 12899accessed with the width specified. On systems that do not support 12900non-aligned transfers, a check is made to guarantee proper address 12901alignment before proceeding in order to avoid an AML-caused 12902alignment fault within the kernel. 12903 12904 12905Fixed a problem with the ExtendedIrq resource where only one byte 12906of the 4-byte Irq field was extracted. 12907 12908Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 12909function was out of date and required a rewrite. 12910 12911Code and Data Size: Current core subsystem library sizes are shown 12912below. These are the code and data sizes for the acpica.lib 12913produced by the Microsoft Visual C++ 6.0 compiler, and these 12914values do not include any ACPI driver or OSPM code. The debug 12915version of the code includes the debug output trace mechanism and 12916has a larger code and data size. Note that these values will vary 12917depending on the efficiency of the compiler and the compiler 12918options used during generation. 12919 12920 Previous Release 12921 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 12922 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 12923 Current Release: 12924 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 12925 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 12926 12927 129282) Linux 12929 12930PCI IRQ routing fixes (Dominik Brodowski) 12931 12932 129333) iASL Compiler Version X2042: 12934 12935Implemented an additional compile-time error check for a field 12936unit whose size + minimum access width would cause a run-time 12937access beyond the end-of-region. Previously, only the field size 12938itself was checked. 12939 12940The Core subsystem and iASL compiler now share a common parse 12941object in preparation for compile-time evaluation of the type 129423/4/5 ASL operators. 12943 12944 12945---------------------------------------- 12946Summary of changes for this release: 03_29_02 12947 129481) ACPI CA Core Subsystem Version 20020329: 12949 12950Implemented support for late evaluation of TermArg operands to 12951Buffer and Package objects. This allows complex expressions to be 12952used in the declarations of these object types. 12953 12954Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 129551.0, if the field was larger than 32 bits, it was returned as a 12956buffer - otherwise it was returned as an integer. In ACPI 2.0, 12957the field is returned as a buffer only if the field is larger than 1295864 bits. The TableRevision is now considered when making this 12959conversion to avoid incompatibility with existing ASL code. 12960 12961Implemented logical addressing for AcpiOsGetRootPointer. This 12962allows an RSDP with either a logical or physical address. With 12963this support, the host OS can now override all ACPI tables with 12964one logical RSDP. Includes implementation of "typed" pointer 12965support to allow a common data type for both physical and logical 12966pointers internally. This required a change to the 12967AcpiOsGetRootPointer interface. 12968 12969Implemented the use of ACPI 2.0 Generic Address Structures for all 12970GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 12971mapped I/O for these ACPI features. 12972 12973Initialization now ignores not only non-required tables (All 12974tables other than the FADT, FACS, DSDT, and SSDTs), but also does 12975not validate the table headers of unrecognized tables. 12976 12977Fixed a problem where a notify handler could only be 12978installed/removed on an object of type Device. All "notify" 12979 12980objects are now supported -- Devices, Processor, Power, and 12981Thermal. 12982 12983Removed most verbosity from the ACPI_DB_INFO debug level. Only 12984critical information is returned when this debug level is enabled. 12985 12986Code and Data Size: Current core subsystem library sizes are shown 12987below. These are the code and data sizes for the acpica.lib 12988produced by the Microsoft Visual C++ 6.0 compiler, and these 12989values do not include any ACPI driver or OSPM code. The debug 12990version of the code includes the debug output trace mechanism and 12991has a larger code and data size. Note that these values will vary 12992depending on the efficiency of the compiler and the compiler 12993options used during generation. 12994 12995 Previous Release 12996 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 12997 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 12998 Current Release: 12999 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 13000 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 13001 13002 130032) Linux: 13004 13005The processor driver (acpi_processor.c) now fully supports ACPI 130062.0-based processor performance control (e.g. Intel(R) 13007SpeedStep(TM) technology) Note that older laptops that only have 13008the Intel "applet" interface are not supported through this. The 13009'limit' and 'performance' interface (/proc) are fully functional. 13010[Note that basic policy for controlling performance state 13011transitions will be included in the next version of ospmd.] The 13012idle handler was modified to more aggressively use C2, and PIIX4 13013errata handling underwent a complete overhaul (big thanks to 13014Dominik Brodowski). 13015 13016Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 13017based devices in the ACPI namespace are now dynamically bound 13018(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 13019This allows, among other things, ACPI to resolve bus numbers for 13020subordinate PCI bridges. 13021 13022Enhanced PCI IRQ routing to get the proper bus number for _PRT 13023entries defined underneath PCI bridges. 13024 13025Added IBM 600E to bad bios list due to invalid _ADR value for 13026PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 13027 13028In the process of adding full MADT support (e.g. IOAPIC) for IA32 13029(acpi.c, mpparse.c) -- stay tuned. 13030 13031Added back visual differentiation between fixed-feature and 13032control-method buttons in dmesg. Buttons are also subtyped (e.g. 13033button/power/PWRF) to simplify button identification. 13034 13035We no longer use -Wno-unused when compiling debug. Please ignore 13036any "_THIS_MODULE defined but not used" messages. 13037 13038Can now shut down the system using "magic sysrq" key. 13039 13040 130413) iASL Compiler version 2041: 13042 13043Fixed a problem where conversion errors for hex/octal/decimal 13044constants were not reported. 13045 13046Implemented a fix for the General Register template Address field. 13047This field was 8 bits when it should be 64. 13048 13049Fixed a problem where errors/warnings were no longer being emitted 13050within the listing output file. 13051 13052Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 13053exactly 4 characters, alphanumeric only. 13054 13055 13056 13057 13058---------------------------------------- 13059Summary of changes for this release: 03_08_02 13060 13061 130621) ACPI CA Core Subsystem Version 20020308: 13063 13064Fixed a problem with AML Fields where the use of the "AccessAny" 13065keyword could cause an interpreter error due to attempting to read 13066or write beyond the end of the parent Operation Region. 13067 13068Fixed a problem in the SystemMemory Operation Region handler where 13069an attempt was made to map memory beyond the end of the region. 13070This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 13071errors on some Linux systems. 13072 13073Fixed a problem where the interpreter/namespace "search to root" 13074algorithm was not functioning for some object types. Relaxed the 13075internal restriction on the search to allow upsearches for all 13076external object types as well as most internal types. 13077 13078 130792) Linux: 13080 13081We now use safe_halt() macro versus individual calls to sti | hlt. 13082 13083Writing to the processor limit interface should now work. "echo 1" 13084will increase the limit, 2 will decrease, and 0 will reset to the 13085 13086default. 13087 13088 130893) ASL compiler: 13090 13091Fixed segfault on Linux version. 13092 13093 13094---------------------------------------- 13095Summary of changes for this release: 02_25_02 13096 130971) ACPI CA Core Subsystem: 13098 13099 13100Fixed a problem where the GPE bit masks were not initialized 13101properly, causing erratic GPE behavior. 13102 13103Implemented limited support for multiple calling conventions. The 13104code can be generated with either the VPL (variable parameter 13105list, or "C") convention, or the FPL (fixed parameter list, or 13106"Pascal") convention. The core subsystem is about 3.4% smaller 13107when generated with FPL. 13108 13109 131102) Linux 13111 13112Re-add some /proc/acpi/event functionality that was lost during 13113the rewrite 13114 13115Resolved issue with /proc events for fixed-feature buttons showing 13116up as the system device. 13117 13118Fixed checks on C2/C3 latencies to be inclusive of maximum values. 13119 13120Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 13121 13122Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 13123 13124Fixed limit interface & usage to fix bugs with passive cooling 13125hysterisis. 13126 13127Restructured PRT support. 13128 13129 13130---------------------------------------- 13131Summary of changes for this label: 02_14_02 13132 13133 131341) ACPI CA Core Subsystem: 13135 13136Implemented support in AcpiLoadTable to allow loading of FACS and 13137FADT tables. 13138 13139Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 13140been removed. All 64-bit platforms should be migrated to the ACPI 131412.0 tables. The actbl71.h header has been removed from the source 13142tree. 13143 13144All C macros defined within the subsystem have been prefixed with 13145"ACPI_" to avoid collision with other system include files. 13146 13147Removed the return value for the two AcpiOsPrint interfaces, since 13148it is never used and causes lint warnings for ignoring the return 13149value. 13150 13151Added error checking to all internal mutex acquire and release 13152calls. Although a failure from one of these interfaces is 13153probably a fatal system error, these checks will cause the 13154immediate abort of the currently executing method or interface. 13155 13156Fixed a problem where the AcpiSetCurrentResources interface could 13157fault. This was a side effect of the deployment of the new memory 13158allocation model. 13159 13160Fixed a couple of problems with the Global Lock support introduced 13161in the last major build. The "common" (1.0/2.0) internal FACS was 13162being overwritten with the FACS signature and clobbering the 13163Global Lock pointer. Also, the actual firmware FACS was being 13164unmapped after construction of the "common" FACS, preventing 13165access to the actual Global Lock field within it. The "common" 13166internal FACS is no longer installed as an actual ACPI table; it 13167is used simply as a global. 13168 13169Code and Data Size: Current core subsystem library sizes are shown 13170below. These are the code and data sizes for the acpica.lib 13171produced by the Microsoft Visual C++ 6.0 compiler, and these 13172values do not include any ACPI driver or OSPM code. The debug 13173version of the code includes the debug output trace mechanism and 13174has a larger code and data size. Note that these values will vary 13175depending on the efficiency of the compiler and the compiler 13176options used during generation. 13177 13178 Previous Release (02_07_01) 13179 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13180 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13181 Current Release: 13182 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 13183 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 13184 13185 131862) Linux 13187 13188Updated Linux-specific code for core macro and OSL interface 13189changes described above. 13190 13191Improved /proc/acpi/event. It now can be opened only once and has 13192proper poll functionality. 13193 13194Fixed and restructured power management (acpi_bus). 13195 13196Only create /proc "view by type" when devices of that class exist. 13197 13198Fixed "charging/discharging" bug (and others) in acpi_battery. 13199 13200Improved thermal zone code. 13201 13202 132033) ASL Compiler, version X2039: 13204 13205 13206Implemented the new compiler restriction on ASL String hex/octal 13207escapes to non-null, ASCII values. An error results if an invalid 13208value is used. (This will require an ACPI 2.0 specification 13209change.) 13210 13211AML object labels that are output to the optional C and ASM source 13212are now prefixed with both the ACPI table signature and table ID 13213to help guarantee uniqueness within a large BIOS project. 13214 13215 13216---------------------------------------- 13217Summary of changes for this label: 02_01_02 13218 132191) ACPI CA Core Subsystem: 13220 13221ACPI 2.0 support is complete in the entire Core Subsystem and the 13222ASL compiler. All new ACPI 2.0 operators are implemented and all 13223other changes for ACPI 2.0 support are complete. With 13224simultaneous code and data optimizations throughout the subsystem, 13225ACPI 2.0 support has been implemented with almost no additional 13226cost in terms of code and data size. 13227 13228Implemented a new mechanism for allocation of return buffers. If 13229the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 13230be allocated on behalf of the caller. Consolidated all return 13231buffer validation and allocation to a common procedure. Return 13232buffers will be allocated via the primary OSL allocation interface 13233since it appears that a separate pool is not needed by most users. 13234If a separate pool is required for these buffers, the caller can 13235still use the original mechanism and pre-allocate the buffer(s). 13236 13237Implemented support for string operands within the DerefOf 13238operator. 13239 13240Restructured the Hardware and Event managers to be table driven, 13241simplifying the source code and reducing the amount of generated 13242code. 13243 13244Split the common read/write low-level ACPI register bitfield 13245procedure into a separate read and write, simplifying the code 13246considerably. 13247 13248Obsoleted the AcpiOsCallocate OSL interface. This interface was 13249used only a handful of times and didn't have enough critical mass 13250for a separate interface. Replaced with a common calloc procedure 13251in the core. 13252 13253Fixed a reported problem with the GPE number mapping mechanism 13254that allows GPE1 numbers to be non-contiguous with GPE0. 13255Reorganized the GPE information and shrunk a large array that was 13256originally large enough to hold info for all possible GPEs (256) 13257to simply large enough to hold all GPEs up to the largest GPE 13258number on the machine. 13259 13260Fixed a reported problem with resource structure alignment on 64- 13261bit platforms. 13262 13263Changed the AcpiEnableEvent and AcpiDisableEvent external 13264interfaces to not require any flags for the common case of 13265enabling/disabling a GPE. 13266 13267Implemented support to allow a "Notify" on a Processor object. 13268 13269Most TBDs in comments within the source code have been resolved 13270and eliminated. 13271 13272 13273Fixed a problem in the interpreter where a standalone parent 13274prefix (^) was not handled correctly in the interpreter and 13275debugger. 13276 13277Removed obsolete and unnecessary GPE save/restore code. 13278 13279Implemented Field support in the ASL Load operator. This allows a 13280table to be loaded from a named field, in addition to loading a 13281table directly from an Operation Region. 13282 13283Implemented timeout and handle support in the external Global Lock 13284interfaces. 13285 13286Fixed a problem in the AcpiDump utility where pathnames were no 13287longer being generated correctly during the dump of named objects. 13288 13289Modified the AML debugger to give a full display of if/while 13290predicates instead of just one AML opcode at a time. (The 13291predicate can have several nested ASL statements.) The old method 13292was confusing during single stepping. 13293 13294Code and Data Size: Current core subsystem library sizes are shown 13295below. These are the code and data sizes for the acpica.lib 13296produced by the Microsoft Visual C++ 6.0 compiler, and these 13297values do not include any ACPI driver or OSPM code. The debug 13298version of the code includes the debug output trace mechanism and 13299has a larger code and data size. Note that these values will vary 13300depending on the efficiency of the compiler and the compiler 13301options used during generation. 13302 13303 Previous Release (12_18_01) 13304 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 13305 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 13306 Current Release: 13307 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 13308 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 13309 133102) Linux 13311 13312 Implemented fix for PIIX reverse throttling errata (Processor 13313driver) 13314 13315Added new Limit interface (Processor and Thermal drivers) 13316 13317New thermal policy (Thermal driver) 13318 13319Many updates to /proc 13320 13321Battery "low" event support (Battery driver) 13322 13323Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 13324 13325IA32 - IA64 initialization unification, no longer experimental 13326 13327Menuconfig options redesigned 13328 133293) ASL Compiler, version X2037: 13330 13331Implemented several new output features to simplify integration of 13332AML code into firmware: 1) Output the AML in C source code with 13333labels for each named ASL object. The original ASL source code 13334is interleaved as C comments. 2) Output the AML in ASM source code 13335with labels and interleaved ASL source. 3) Output the AML in 13336raw hex table form, in either C or ASM. 13337 13338Implemented support for optional string parameters to the 13339LoadTable operator. 13340 13341Completed support for embedded escape sequences within string 13342literals. The compiler now supports all single character escapes 13343as well as the Octal and Hex escapes. Note: the insertion of a 13344null byte into a string literal (via the hex/octal escape) causes 13345the string to be immediately terminated. A warning is issued. 13346 13347Fixed a problem where incorrect AML was generated for the case 13348where an ASL namepath consists of a single parent prefix ( 13349 13350) with no trailing name segments. 13351 13352The compiler has been successfully generated with a 64-bit C 13353compiler. 13354 13355 13356 13357 13358---------------------------------------- 13359Summary of changes for this label: 12_18_01 13360 133611) Linux 13362 13363Enhanced blacklist with reason and severity fields. Any table's 13364signature may now be used to identify a blacklisted system. 13365 13366Call _PIC control method to inform the firmware which interrupt 13367model the OS is using. Turn on any disabled link devices. 13368 13369Cleaned up busmgr /proc error handling (Andreas Dilger) 13370 13371 2) ACPI CA Core Subsystem: 13372 13373Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 13374while loop) 13375 13376Completed implementation of the ACPI 2.0 "Continue", 13377"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 13378operators. All new ACPI 2.0 operators are now implemented in both 13379the ASL compiler and the AML interpreter. The only remaining ACPI 133802.0 task is support for the String data type in the DerefOf 13381operator. Fixed a problem with AcquireMutex where the status code 13382was lost if the caller had to actually wait for the mutex. 13383 13384Increased the maximum ASL Field size from 64K bits to 4G bits. 13385 13386Completed implementation of the external Global Lock interfaces -- 13387AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 13388Handler parameters were added. 13389 13390Completed another pass at removing warnings and issues when 13391compiling with 64-bit compilers. The code now compiles cleanly 13392with the Intel 64-bit C/C++ compiler. Most notably, the pointer 13393add and subtract (diff) macros have changed considerably. 13394 13395 13396Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1339764-bit platforms, 32-bits on all others. This type is used 13398wherever memory allocation and/or the C sizeof() operator is used, 13399and affects the OSL memory allocation interfaces AcpiOsAllocate 13400and AcpiOsCallocate. 13401 13402Implemented sticky user breakpoints in the AML debugger. 13403 13404Code and Data Size: Current core subsystem library sizes are shown 13405below. These are the code and data sizes for the acpica.lib 13406produced by the Microsoft Visual C++ 6.0 compiler, and these 13407values do not include any ACPI driver or OSPM code. The debug 13408version of the code includes the debug output trace mechanism and 13409has a larger code and data size. Note that these values will vary 13410depending on the efficiency of the compiler and the compiler 13411options used during generation. 13412 13413 Previous Release (12_05_01) 13414 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 13415 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 13416 Current Release: 13417 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 13418 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 13419 13420 3) ASL Compiler, version X2034: 13421 13422Now checks for (and generates an error if detected) the use of a 13423Break or Continue statement without an enclosing While statement. 13424 13425 13426Successfully generated the compiler with the Intel 64-bit C 13427compiler. 13428 13429 ---------------------------------------- 13430Summary of changes for this label: 12_05_01 13431 13432 1) ACPI CA Core Subsystem: 13433 13434The ACPI 2.0 CopyObject operator is fully implemented. This 13435operator creates a new copy of an object (and is also used to 13436bypass the "implicit conversion" mechanism of the Store operator.) 13437 13438The ACPI 2.0 semantics for the SizeOf operator are fully 13439implemented. The change is that performing a SizeOf on a 13440reference object causes an automatic dereference of the object to 13441tha actual value before the size is evaluated. This behavior was 13442undefined in ACPI 1.0. 13443 13444The ACPI 2.0 semantics for the Extended IRQ resource descriptor 13445have been implemented. The interrupt polarity and mode are now 13446independently set. 13447 13448Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 13449appearing in Package objects were not properly converted to 13450integers when the internal Package was converted to an external 13451object (via the AcpiEvaluateObject interface.) 13452 13453Fixed a problem with the namespace object deletion mechanism for 13454objects created by control methods. There were two parts to this 13455problem: 1) Objects created during the initialization phase method 13456parse were not being deleted, and 2) The object owner ID mechanism 13457to track objects was broken. 13458 13459Fixed a problem where the use of the ASL Scope operator within a 13460control method would result in an invalid opcode exception. 13461 13462Fixed a problem introduced in the previous label where the buffer 13463length required for the _PRT structure was not being returned 13464correctly. 13465 13466Code and Data Size: Current core subsystem library sizes are shown 13467below. These are the code and data sizes for the acpica.lib 13468produced by the Microsoft Visual C++ 6.0 compiler, and these 13469values do not include any ACPI driver or OSPM code. The debug 13470version of the code includes the debug output trace mechanism and 13471has a larger code and data size. Note that these values will vary 13472depending on the efficiency of the compiler and the compiler 13473options used during generation. 13474 13475 Previous Release (11_20_01) 13476 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 13477 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 13478 13479 Current Release: 13480 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 13481 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 13482 13483 2) Linux: 13484 13485Updated all files to apply cleanly against 2.4.16. 13486 13487Added basic PCI Interrupt Routing Table (PRT) support for IA32 13488(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 13489version supports both static and dyanmic PRT entries, but dynamic 13490entries are treated as if they were static (not yet 13491reconfigurable). Architecture- specific code to use this data is 13492absent on IA32 but should be available shortly. 13493 13494Changed the initialization sequence to start the ACPI interpreter 13495(acpi_init) prior to initialization of the PCI driver (pci_init) 13496in init/main.c. This ordering is required to support PRT and 13497facilitate other (future) enhancement. A side effect is that the 13498ACPI bus driver and certain device drivers can no longer be loaded 13499as modules. 13500 13501Modified the 'make menuconfig' options to allow PCI Interrupt 13502Routing support to be included without the ACPI Bus and other 13503device drivers. 13504 13505 3) ASL Compiler, version X2033: 13506 13507Fixed some issues with the use of the new CopyObject and 13508DataTableRegion operators. Both are fully functional. 13509 13510 ---------------------------------------- 13511Summary of changes for this label: 11_20_01 13512 13513 20 November 2001. Summary of changes for this release. 13514 13515 1) ACPI CA Core Subsystem: 13516 13517Updated Index support to match ACPI 2.0 semantics. Storing a 13518Integer, String, or Buffer to an Index of a Buffer will store only 13519the least-significant byte of the source to the Indexed buffer 13520byte. Multiple writes are not performed. 13521 13522Fixed a problem where the access type used in an AccessAs ASL 13523operator was not recorded correctly into the field object. 13524 13525Fixed a problem where ASL Event objects were created in a 13526signalled state. Events are now created in an unsignalled state. 13527 13528The internal object cache is now purged after table loading and 13529initialization to reduce the use of dynamic kernel memory -- on 13530the assumption that object use is greatest during the parse phase 13531of the entire table (versus the run-time use of individual control 13532methods.) 13533 13534ACPI 2.0 variable-length packages are now fully operational. 13535 13536Code and Data Size: Code and Data optimizations have permitted new 13537feature development with an actual reduction in the library size. 13538Current core subsystem library sizes are shown below. These are 13539the code and data sizes for the acpica.lib produced by the 13540Microsoft Visual C++ 6.0 compiler, and these values do not include 13541any ACPI driver or OSPM code. The debug version of the code 13542includes the debug output trace mechanism and has a larger code 13543and data size. Note that these values will vary depending on the 13544efficiency of the compiler and the compiler options used during 13545generation. 13546 13547 Previous Release (11_09_01): 13548 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 13549 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 13550 13551 Current Release: 13552 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 13553 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 13554 13555 2) Linux: 13556 13557Enhanced the ACPI boot-time initialization code to allow the use 13558of Local APIC tables for processor enumeration on IA-32, and to 13559pave the way for a fully MPS-free boot (on SMP systems) in the 13560near future. This functionality replaces 13561arch/i386/kernel/acpitables.c, which was introduced in an earlier 135622.4.15-preX release. To enable this feature you must add 13563"acpi_boot=on" to the kernel command line -- see the help entry 13564for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 13565the works... 13566 13567Restructured the configuration options to allow boot-time table 13568parsing support without inclusion of the ACPI Interpreter (and 13569other) code. 13570 13571NOTE: This release does not include fixes for the reported events, 13572power-down, and thermal passive cooling issues (coming soon). 13573 13574 3) ASL Compiler: 13575 13576Added additional typechecking for Fields within restricted access 13577Operation Regions. All fields within EC and CMOS regions must be 13578declared with ByteAcc. All fields withing SMBus regions must be 13579declared with the BufferAcc access type. 13580 13581Fixed a problem where the listing file output of control methods 13582no longer interleaved the actual AML code with the ASL source 13583code. 13584 13585 13586 13587 13588---------------------------------------- 13589Summary of changes for this label: 11_09_01 13590 135911) ACPI CA Core Subsystem: 13592 13593Implemented ACPI 2.0-defined support for writes to fields with a 13594Buffer, String, or Integer source operand that is smaller than the 13595target field. In these cases, the source operand is zero-extended 13596to fill the target field. 13597 13598Fixed a problem where a Field starting bit offset (within the 13599parent operation region) was calculated incorrectly if the 13600 13601alignment of the field differed from the access width. This 13602affected CreateWordField, CreateDwordField, CreateQwordField, and 13603possibly other fields that use the "AccessAny" keyword. 13604 13605Fixed a problem introduced in the 11_02_01 release where indirect 13606stores through method arguments did not operate correctly. 13607 136082) Linux: 13609 13610Implemented boot-time ACPI table parsing support 13611(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 13612facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 13613legacy BIOS interfaces (e.g. MPS) for the configuration of system 13614processors, memory, and interrupts during setup_arch(). Note that 13615this patch does not include the required architecture-specific 13616changes required to apply this information -- subsequent patches 13617will be posted for both IA32 and IA64 to achieve this. 13618 13619Added low-level sleep support for IA32 platforms, courtesy of Pat 13620Mochel. This allows IA32 systems to transition to/from various 13621sleeping states (e.g. S1, S3), although the lack of a centralized 13622driver model and power-manageable drivers will prevent its 13623(successful) use on most systems. 13624 13625Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 13626submenu, unified IA32 and IA64 options, added new "Boot using ACPI 13627tables" option, etc. 13628 13629Increased the default timeout for the EC driver from 1ms to 10ms 13630(1000 cycles of 10us) to try to address AE_TIME errors during EC 13631transactions. 13632 13633 ---------------------------------------- 13634Summary of changes for this label: 11_02_01 13635 136361) ACPI CA Core Subsystem: 13637 13638ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 13639(QWordAcc keyword). All ACPI 2.0 64-bit support is now 13640implemented. 13641 13642OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 13643changes to support ACPI 2.0 Qword field access. Read/Write 13644PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 13645accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 13646the value parameter for the address space handler interface is now 13647an ACPI_INTEGER. OSL implementations of these interfaces must now 13648handle the case where the Width parameter is 64. 13649 13650Index Fields: Fixed a problem where unaligned bit assembly and 13651disassembly for IndexFields was not supported correctly. 13652 13653Index and Bank Fields: Nested Index and Bank Fields are now 13654supported. During field access, a check is performed to ensure 13655that the value written to an Index or Bank register is not out of 13656the range of the register. The Index (or Bank) register is 13657written before each access to the field data. Future support will 13658include allowing individual IndexFields to be wider than the 13659DataRegister width. 13660 13661Fields: Fixed a problem where the AML interpreter was incorrectly 13662attempting to write beyond the end of a Field/OpRegion. This was 13663a boundary case that occurred when a DWORD field was written to a 13664BYTE access OpRegion, forcing multiple writes and causing the 13665interpreter to write one datum too many. 13666 13667Fields: Fixed a problem with Field/OpRegion access where the 13668starting bit address of a field was incorrectly calculated if the 13669current access type was wider than a byte (WordAcc, DwordAcc, or 13670QwordAcc). 13671 13672Fields: Fixed a problem where forward references to individual 13673FieldUnits (individual Field names within a Field definition) were 13674not resolved during the AML table load. 13675 13676Fields: Fixed a problem where forward references from a Field 13677definition to the parent Operation Region definition were not 13678resolved during the AML table load. 13679 13680Fields: Duplicate FieldUnit names within a scope are now detected 13681during AML table load. 13682 13683Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 13684returned an incorrect name for the root node. 13685 13686Code and Data Size: Code and Data optimizations have permitted new 13687feature development with an actual reduction in the library size. 13688Current core subsystem library sizes are shown below. These are 13689the code and data sizes for the acpica.lib produced by the 13690Microsoft Visual C++ 6.0 compiler, and these values do not include 13691any ACPI driver or OSPM code. The debug version of the code 13692includes the debug output trace mechanism and has a larger code 13693and data size. Note that these values will vary depending on the 13694efficiency of the compiler and the compiler options used during 13695generation. 13696 13697 Previous Release (10_18_01): 13698 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 13699 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 13700 13701 Current Release: 13702 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 13703 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 13704 13705 2) Linux: 13706 13707Improved /proc processor output (Pavel Machek) Re-added 13708MODULE_LICENSE("GPL") to all modules. 13709 13710 3) ASL Compiler version X2030: 13711 13712Duplicate FieldUnit names within a scope are now detected and 13713flagged as errors. 13714 13715 4) Documentation: 13716 13717Programmer Reference updated to reflect OSL and address space 13718handler interface changes described above. 13719 13720---------------------------------------- 13721Summary of changes for this label: 10_18_01 13722 13723ACPI CA Core Subsystem: 13724 13725Fixed a problem with the internal object reference count mechanism 13726that occasionally caused premature object deletion. This resolves 13727all of the outstanding problem reports where an object is deleted 13728in the middle of an interpreter evaluation. Although this problem 13729only showed up in rather obscure cases, the solution to the 13730problem involved an adjustment of all reference counts involving 13731objects attached to namespace nodes. 13732 13733Fixed a problem with Field support in the interpreter where 13734writing to an aligned field whose length is an exact multiple (2 13735or greater) of the field access granularity would cause an attempt 13736to write beyond the end of the field. 13737 13738The top level AML opcode execution functions within the 13739interpreter have been renamed with a more meaningful and 13740consistent naming convention. The modules exmonad.c and 13741exdyadic.c were eliminated. New modules are exoparg1.c, 13742exoparg2.c, exoparg3.c, and exoparg6.c. 13743 13744Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 13745 13746Fixed a problem where the AML debugger was causing some internal 13747objects to not be deleted during subsystem termination. 13748 13749Fixed a problem with the external AcpiEvaluateObject interface 13750where the subsystem would fault if the named object to be 13751evaluated refered to a constant such as Zero, Ones, etc. 13752 13753Fixed a problem with IndexFields and BankFields where the 13754subsystem would fault if the index, data, or bank registers were 13755not defined in the same scope as the field itself. 13756 13757Added printf format string checking for compilers that support 13758this feature. Corrected more than 50 instances of issues with 13759format specifiers within invocations of ACPI_DEBUG_PRINT 13760throughout the core subsystem code. 13761 13762The ASL "Revision" operator now returns the ACPI support level 13763implemented in the core - the value "2" since the ACPI 2.0 support 13764is more than 50% implemented. 13765 13766Enhanced the output of the AML debugger "dump namespace" command 13767to output in a more human-readable form. 13768 13769Current core subsystem library code sizes are shown below. These 13770 13771are the code and data sizes for the acpica.lib produced by the 13772Microsoft Visual C++ 6.0 compiler, and these values do not include 13773any ACPI driver or OSPM code. The debug version of the code 13774includes the full debug trace mechanism -- leading to a much 13775 13776larger code and data size. Note that these values will vary 13777depending on the efficiency of the compiler and the compiler 13778options used during generation. 13779 13780 Previous Label (09_20_01): 13781 Non-Debug Version: 65K Code, 5K Data, 70K Total 13782 Debug Version: 138K Code, 58K Data, 196K Total 13783 13784 This Label: 13785 13786 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 13787 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 13788 13789Linux: 13790 13791Implemented a "Bad BIOS Blacklist" to track machines that have 13792known ASL/AML problems. 13793 13794Enhanced the /proc interface for the thermal zone driver and added 13795support for _HOT (the critical suspend trip point). The 'info' 13796file now includes threshold/policy information, and allows setting 13797of _SCP (cooling preference) and _TZP (polling frequency) values 13798to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 13799frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 13800preference to the passive/quiet mode (if supported by the ASL). 13801 13802Implemented a workaround for a gcc bug that resuted in an OOPs 13803when loading the control method battery driver. 13804 13805 ---------------------------------------- 13806Summary of changes for this label: 09_20_01 13807 13808 ACPI CA Core Subsystem: 13809 13810The AcpiEnableEvent and AcpiDisableEvent interfaces have been 13811modified to allow individual GPE levels to be flagged as wake- 13812enabled (i.e., these GPEs are to remain enabled when the platform 13813sleeps.) 13814 13815The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 13816support wake-enabled GPEs. This means that upon entering the 13817sleep state, all GPEs that are not wake-enabled are disabled. 13818When leaving the sleep state, these GPEs are reenabled. 13819 13820A local double-precision divide/modulo module has been added to 13821enhance portability to OS kernels where a 64-bit math library is 13822not available. The new module is "utmath.c". 13823 13824Several optimizations have been made to reduce the use of CPU 13825stack. Originally over 2K, the maximum stack usage is now below 138262K at 1860 bytes (1.82k) 13827 13828Fixed a problem with the AcpiGetFirmwareTable interface where the 13829root table pointer was not mapped into a logical address properly. 13830 13831Fixed a problem where a NULL pointer was being dereferenced in the 13832interpreter code for the ASL Notify operator. 13833 13834Fixed a problem where the use of the ASL Revision operator 13835returned an error. This operator now returns the current version 13836of the ACPI CA core subsystem. 13837 13838Fixed a problem where objects passed as control method parameters 13839to AcpiEvaluateObject were always deleted at method termination. 13840However, these objects may end up being stored into the namespace 13841by the called method. The object reference count mechanism was 13842applied to these objects instead of a force delete. 13843 13844Fixed a problem where static strings or buffers (contained in the 13845AML code) that are declared as package elements within the ASL 13846code could cause a fault because the interpreter would attempt to 13847delete them. These objects are now marked with the "static 13848object" flag to prevent any attempt to delete them. 13849 13850Implemented an interpreter optimization to use operands directly 13851from the state object instead of extracting the operands to local 13852variables. This reduces stack use and code size, and improves 13853performance. 13854 13855The module exxface.c was eliminated as it was an unnecessary extra 13856layer of code. 13857 13858Current core subsystem library code sizes are shown below. These 13859are the code and data sizes for the acpica.lib produced by the 13860Microsoft Visual C++ 6.0 compiler, and these values do not include 13861any ACPI driver or OSPM code. The debug version of the code 13862includes the full debug trace mechanism -- leading to a much 13863larger code and data size. Note that these values will vary 13864depending on the efficiency of the compiler and the compiler 13865options used during generation. 13866 13867 Non-Debug Version: 65K Code, 5K Data, 70K Total 13868(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 13869Total (Previously 195K) 13870 13871Linux: 13872 13873Support for ACPI 2.0 64-bit integers has been added. All ACPI 13874Integer objects are now 64 bits wide 13875 13876All Acpi data types and structures are now in lower case. Only 13877Acpi macros are upper case for differentiation. 13878 13879 Documentation: 13880 13881Changes to the external interfaces as described above. 13882 13883 ---------------------------------------- 13884Summary of changes for this label: 08_31_01 13885 13886 ACPI CA Core Subsystem: 13887 13888A bug with interpreter implementation of the ASL Divide operator 13889was found and fixed. The implicit function return value (not the 13890explicit store operands) was returning the remainder instead of 13891the quotient. This was a longstanding bug and it fixes several 13892known outstanding issues on various platforms. 13893 13894The ACPI_DEBUG_PRINT and function trace entry/exit macros have 13895been further optimized for size. There are 700 invocations of the 13896DEBUG_PRINT macro alone, so each optimization reduces the size of 13897the debug version of the subsystem significantly. 13898 13899A stack trace mechanism has been implemented. The maximum stack 13900usage is about 2K on 32-bit platforms. The debugger command "stat 13901stack" will display the current maximum stack usage. 13902 13903All public symbols and global variables within the subsystem are 13904now prefixed with the string "Acpi". This keeps all of the 13905symbols grouped together in a kernel map, and avoids conflicts 13906with other kernel subsystems. 13907 13908Most of the internal fixed lookup tables have been moved into the 13909code segment via the const operator. 13910 13911Several enhancements have been made to the interpreter to both 13912reduce the code size and improve performance. 13913 13914Current core subsystem library code sizes are shown below. These 13915are the code and data sizes for the acpica.lib produced by the 13916Microsoft Visual C++ 6.0 compiler, and these values do not include 13917any ACPI driver or OSPM code. The debug version of the code 13918includes the full debug trace mechanism which contains over 700 13919invocations of the DEBUG_PRINT macro, 500 function entry macro 13920invocations, and over 900 function exit macro invocations -- 13921leading to a much larger code and data size. Note that these 13922values will vary depending on the efficiency of the compiler and 13923the compiler options used during generation. 13924 13925 Non-Debug Version: 64K Code, 5K Data, 69K Total 13926Debug Version: 137K Code, 58K Data, 195K Total 13927 13928 Linux: 13929 13930Implemented wbinvd() macro, pending a kernel-wide definition. 13931 13932Fixed /proc/acpi/event to handle poll() and short reads. 13933 13934 ASL Compiler, version X2026: 13935 13936Fixed a problem introduced in the previous label where the AML 13937 13938code emitted for package objects produced packages with zero 13939length. 13940 13941 ---------------------------------------- 13942Summary of changes for this label: 08_16_01 13943 13944ACPI CA Core Subsystem: 13945 13946The following ACPI 2.0 ASL operators have been implemented in the 13947AML interpreter (These are already supported by the Intel ASL 13948compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 13949ToBuffer. Support for 64-bit AML constants is implemented in the 13950AML parser, debugger, and disassembler. 13951 13952The internal memory tracking mechanism (leak detection code) has 13953been upgraded to reduce the memory overhead (a separate tracking 13954block is no longer allocated for each memory allocation), and now 13955supports all of the internal object caches. 13956 13957The data structures and code for the internal object caches have 13958been coelesced and optimized so that there is a single cache and 13959memory list data structure and a single group of functions that 13960implement generic cache management. This has reduced the code 13961size in both the debug and release versions of the subsystem. 13962 13963The DEBUG_PRINT macro(s) have been optimized for size and replaced 13964by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 13965different, because it generates a single call to an internal 13966function. This results in a savings of about 90 bytes per 13967invocation, resulting in an overall code and data savings of about 1396816% in the debug version of the subsystem. 13969 13970 Linux: 13971 13972Fixed C3 disk corruption problems and re-enabled C3 on supporting 13973machines. 13974 13975Integrated low-level sleep code by Patrick Mochel. 13976 13977Further tweaked source code Linuxization. 13978 13979Other minor fixes. 13980 13981 ASL Compiler: 13982 13983Support for ACPI 2.0 variable length packages is fixed/completed. 13984 13985Fixed a problem where the optional length parameter for the ACPI 139862.0 ToString operator. 13987 13988Fixed multiple extraneous error messages when a syntax error is 13989detected within the declaration line of a control method. 13990 13991 ---------------------------------------- 13992Summary of changes for this label: 07_17_01 13993 13994ACPI CA Core Subsystem: 13995 13996Added a new interface named AcpiGetFirmwareTable to obtain any 13997ACPI table via the ACPI signature. The interface can be called at 13998any time during kernel initialization, even before the kernel 13999virtual memory manager is initialized and paging is enabled. This 14000allows kernel subsystems to obtain ACPI tables very early, even 14001before the ACPI CA subsystem is initialized. 14002 14003Fixed a problem where Fields defined with the AnyAcc attribute 14004could be resolved to the incorrect address under the following 14005conditions: 1) the field width is larger than 8 bits and 2) the 14006parent operation region is not defined on a DWORD boundary. 14007 14008Fixed a problem where the interpreter is not being locked during 14009namespace initialization (during execution of the _INI control 14010methods), causing an error when an attempt is made to release it 14011later. 14012 14013ACPI 2.0 support in the AML Interpreter has begun and will be 14014ongoing throughout the rest of this year. In this label, The Mod 14015operator is implemented. 14016 14017Added a new data type to contain full PCI addresses named 14018ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 14019and Function values. 14020 14021 Linux: 14022 14023Enhanced the Linux version of the source code to change most 14024capitalized ACPI type names to lowercase. For example, all 14025instances of ACPI_STATUS are changed to acpi_status. This will 14026result in a large diff, but the change is strictly cosmetic and 14027aligns the CA code closer to the Linux coding standard. 14028 14029OSL Interfaces: 14030 14031The interfaces to the PCI configuration space have been changed to 14032add the PCI Segment number and to split the single 32-bit combined 14033DeviceFunction field into two 16-bit fields. This was 14034accomplished by moving the four values that define an address in 14035PCI configuration space (segment, bus, device, and function) to 14036the new ACPI_PCI_ID structure. 14037 14038The changes to the PCI configuration space interfaces led to a 14039reexamination of the complete set of address space access 14040interfaces for PCI, I/O, and Memory. The previously existing 18 14041interfaces have proven difficult to maintain (any small change 14042must be propagated across at least 6 interfaces) and do not easily 14043allow for future expansion to 64 bits if necessary. Also, on some 14044systems, it would not be appropriate to demultiplex the access 14045width (8, 16, 32,or 64) before calling the OSL if the 14046corresponding native OS interfaces contain a similar access width 14047parameter. For these reasons, the 18 address space interfaces 14048have been replaced by these 6 new ones: 14049 14050AcpiOsReadPciConfiguration 14051AcpiOsWritePciConfiguration 14052AcpiOsReadMemory 14053AcpiOsWriteMemory 14054AcpiOsReadPort 14055AcpiOsWritePort 14056 14057Added a new interface named AcpiOsGetRootPointer to allow the OSL 14058to perform the platform and/or OS-specific actions necessary to 14059obtain the ACPI RSDP table pointer. On IA-32 platforms, this 14060interface will simply call down to the CA core to perform the low- 14061memory search for the table. On IA-64, the RSDP is obtained from 14062EFI. Migrating this interface to the OSL allows the CA core to 14063 14064remain OS and platform independent. 14065 14066Added a new interface named AcpiOsSignal to provide a generic 14067"function code and pointer" interface for various miscellaneous 14068signals and notifications that must be made to the host OS. The 14069first such signals are intended to support the ASL Fatal and 14070Breakpoint operators. In the latter case, the AcpiOsBreakpoint 14071interface has been obsoleted. 14072 14073The definition of the AcpiFormatException interface has been 14074changed to simplify its use. The caller no longer must supply a 14075buffer to the call; A pointer to a const string is now returned 14076directly. This allows the call to be easily used in printf 14077statements, etc. since the caller does not have to manage a local 14078buffer. 14079 14080 14081 ASL Compiler, Version X2025: 14082 14083The ACPI 2.0 Switch/Case/Default operators have been implemented 14084and are fully functional. They will work with all ACPI 1.0 14085interpreters, since the operators are simply translated to If/Else 14086pairs. 14087 14088The ACPI 2.0 ElseIf operator is implemented and will also work 14089with 1.0 interpreters, for the same reason. 14090 14091Implemented support for ACPI 2.0 variable-length packages. These 14092packages have a separate opcode, and their size is determined by 14093the interpreter at run-time. 14094 14095Documentation The ACPI CA Programmer Reference has been updated to 14096reflect the new interfaces and changes to existing interfaces. 14097 14098 ------------------------------------------ 14099Summary of changes for this label: 06_15_01 14100 14101 ACPI CA Core Subsystem: 14102 14103Fixed a problem where a DWORD-accessed field within a Buffer 14104object would get its byte address inadvertently rounded down to 14105the nearest DWORD. Buffers are always Byte-accessible. 14106 14107 ASL Compiler, version X2024: 14108 14109Fixed a problem where the Switch() operator would either fault or 14110hang the compiler. Note however, that the AML code for this ACPI 141112.0 operator is not yet implemented. 14112 14113Compiler uses the new AcpiOsGetTimer interface to obtain compile 14114timings. 14115 14116Implementation of the CreateField operator automatically converts 14117a reference to a named field within a resource descriptor from a 14118byte offset to a bit offset if required. 14119 14120Added some missing named fields from the resource descriptor 14121support. These are the names that are automatically created by the 14122compiler to reference fields within a descriptor. They are only 14123valid at compile time and are not passed through to the AML 14124interpreter. 14125 14126Resource descriptor named fields are now typed as Integers and 14127subject to compile-time typechecking when used in expressions. 14128 14129 ------------------------------------------ 14130Summary of changes for this label: 05_18_01 14131 14132 ACPI CA Core Subsystem: 14133 14134Fixed a couple of problems in the Field support code where bits 14135from adjacent fields could be returned along with the proper field 14136bits. Restructured the field support code to improve performance, 14137readability and maintainability. 14138 14139New DEBUG_PRINTP macro automatically inserts the procedure name 14140into the output, saving hundreds of copies of procedure name 14141strings within the source, shrinking the memory footprint of the 14142debug version of the core subsystem. 14143 14144 Source Code Structure: 14145 14146The source code directory tree was restructured to reflect the 14147current organization of the component architecture. Some files 14148and directories have been moved and/or renamed. 14149 14150 Linux: 14151 14152Fixed leaking kacpidpc processes. 14153 14154Fixed queueing event data even when /proc/acpi/event is not 14155opened. 14156 14157 ASL Compiler, version X2020: 14158 14159Memory allocation performance enhancement - over 24X compile time 14160improvement on large ASL files. Parse nodes and namestring 14161buffers are now allocated from a large internal compiler buffer. 14162 14163The temporary .SRC file is deleted unless the "-s" option is 14164specified 14165 14166The "-d" debug output option now sends all output to the .DBG file 14167instead of the console. 14168 14169"External" second parameter is now optional 14170 14171"ElseIf" syntax now properly allows the predicate 14172 14173Last operand to "Load" now recognized as a Target operand 14174 14175Debug object can now be used anywhere as a normal object. 14176 14177ResourceTemplate now returns an object of type BUFFER 14178 14179EISAID now returns an object of type INTEGER 14180 14181"Index" now works with a STRING operand 14182 14183"LoadTable" now accepts optional parameters 14184 14185"ToString" length parameter is now optional 14186 14187"Interrupt (ResourceType," parse error fixed. 14188 14189"Register" with a user-defined region space parse error fixed 14190 14191Escaped backslash at the end of a string ("\\") scan/parse error 14192fixed 14193 14194"Revision" is now an object of type INTEGER. 14195 14196 14197 14198------------------------------------------ 14199Summary of changes for this label: 05_02_01 14200 14201Linux: 14202 14203/proc/acpi/event now blocks properly. 14204 14205Removed /proc/sys/acpi. You can still dump your DSDT from 14206/proc/acpi/dsdt. 14207 14208 ACPI CA Core Subsystem: 14209 14210Fixed a problem introduced in the previous label where some of the 14211"small" resource descriptor types were not recognized. 14212 14213Improved error messages for the case where an ASL Field is outside 14214the range of the parent operation region. 14215 14216 ASL Compiler, version X2018: 14217 14218 14219Added error detection for ASL Fields that extend beyond the length 14220of the parent operation region (only if the length of the region 14221is known at compile time.) This includes fields that have a 14222minimum access width that is smaller than the parent region, and 14223individual field units that are partially or entirely beyond the 14224extent of the parent. 14225 14226 14227 14228------------------------------------------ 14229Summary of changes for this label: 04_27_01 14230 14231 ACPI CA Core Subsystem: 14232 14233Fixed a problem where the namespace mutex could be released at the 14234wrong time during execution of AcpiRemoveAddressSpaceHandler. 14235 14236Added optional thread ID output for debug traces, to simplify 14237debugging of multiple threads. Added context switch notification 14238when the debug code realizes that a different thread is now 14239executing ACPI code. 14240 14241Some additional external data types have been prefixed with the 14242string "ACPI_" for consistency. This may effect existing code. 14243The data types affected are the external callback typedefs - e.g., 14244 14245WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 14246 14247 Linux: 14248 14249Fixed an issue with the OSL semaphore implementation where a 14250thread was waking up with an error from receiving a SIGCHLD 14251signal. 14252 14253Linux version of ACPI CA now uses the system C library for string 14254manipulation routines instead of a local implementation. 14255 14256Cleaned up comments and removed TBDs. 14257 14258 ASL Compiler, version X2017: 14259 14260Enhanced error detection and reporting for all file I/O 14261operations. 14262 14263 Documentation: 14264 14265Programmer Reference updated to version 1.06. 14266 14267 14268 14269------------------------------------------ 14270Summary of changes for this label: 04_13_01 14271 14272 ACPI CA Core Subsystem: 14273 14274Restructured support for BufferFields and RegionFields. 14275BankFields support is now fully operational. All known 32-bit 14276limitations on field sizes have been removed. Both BufferFields 14277and (Operation) RegionFields are now supported by the same field 14278management code. 14279 14280Resource support now supports QWORD address and IO resources. The 1428116/32/64 bit address structures and the Extended IRQ structure 14282have been changed to properly handle Source Resource strings. 14283 14284A ThreadId of -1 is now used to indicate a "mutex not acquired" 14285condition internally and must never be returned by AcpiOsThreadId. 14286This reserved value was changed from 0 since Unix systems allow a 14287thread ID of 0. 14288 14289Linux: 14290 14291Driver code reorganized to enhance portability 14292 14293Added a kernel configuration option to control ACPI_DEBUG 14294 14295Fixed the EC driver to honor _GLK. 14296 14297ASL Compiler, version X2016: 14298 14299Fixed support for the "FixedHw" keyword. Previously, the FixedHw 14300address space was set to 0, not 0x7f as it should be. 14301 14302 ------------------------------------------ 14303Summary of changes for this label: 03_13_01 14304 14305 ACPI CA Core Subsystem: 14306 14307During ACPI initialization, the _SB_._INI method is now run if 14308present. 14309 14310Notify handler fix - notifies are deferred until the parent method 14311completes execution. This fixes the "mutex already acquired" 14312issue seen occasionally. 14313 14314Part of the "implicit conversion" rules in ACPI 2.0 have been 14315found to cause compatibility problems with existing ASL/AML. The 14316convert "result-to-target-type" implementation has been removed 14317for stores to method Args and Locals. Source operand conversion 14318is still fully implemented. Possible changes to ACPI 2.0 14319specification pending. 14320 14321Fix to AcpiRsCalculatePciRoutingTableLength to return correct 14322length. 14323 14324Fix for compiler warnings for 64-bit compiles. 14325 14326 Linux: 14327 14328/proc output aligned for easier parsing. 14329 14330Release-version compile problem fixed. 14331 14332New kernel configuration options documented in Configure.help. 14333 14334IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 14335context" message. 14336 14337 OSPM: 14338 14339Power resource driver integrated with bus manager. 14340 14341Fixed kernel fault during active cooling for thermal zones. 14342 14343Source Code: 14344 14345The source code tree has been restructured. 14346 14347 14348 14349------------------------------------------ 14350Summary of changes for this label: 03_02_01 14351 14352 Linux OS Services Layer (OSL): 14353 14354Major revision of all Linux-specific code. 14355 14356Modularized all ACPI-specific drivers. 14357 14358Added new thermal zone and power resource drivers. 14359 14360Revamped /proc interface (new functionality is under /proc/acpi). 14361 14362New kernel configuration options. 14363 14364 Linux known issues: 14365 14366New kernel configuration options not documented in Configure.help 14367yet. 14368 14369 14370Module dependencies not currently implemented. If used, they 14371should be loaded in this order: busmgr, power, ec, system, 14372processor, battery, ac_adapter, button, thermal. 14373 14374Modules will not load if CONFIG_MODVERSION is set. 14375 14376IBM 600E - entering S5 may reboot instead of shutting down. 14377 14378IBM 600E - Sleep button may generate "Invalid <NULL> context" 14379message. 14380 14381Some systems may fail with "execution mutex already acquired" 14382message. 14383 14384 ACPI CA Core Subsystem: 14385 14386Added a new OSL Interface, AcpiOsGetThreadId. This was required 14387for the deadlock detection code. Defined to return a non-zero, 32- 14388bit thread ID for the currently executing thread. May be a non- 14389zero constant integer on single-thread systems. 14390 14391Implemented deadlock detection for internal subsystem mutexes. We 14392may add conditional compilation for this code (debug only) later. 14393 14394ASL/AML Mutex object semantics are now fully supported. This 14395includes multiple acquires/releases by owner and support for the 14396 14397Mutex SyncLevel parameter. 14398 14399A new "Force Release" mechanism automatically frees all ASL 14400Mutexes that have been acquired but not released when a thread 14401exits the interpreter. This forces conformance to the ACPI spec 14402("All mutexes must be released when an invocation exits") and 14403prevents deadlocked ASL threads. This mechanism can be expanded 14404(later) to monitor other resource acquisitions if OEM ASL code 14405continues to misbehave (which it will). 14406 14407Several new ACPI exception codes have been added for the Mutex 14408support. 14409 14410Recursive method calls are now allowed and supported (the ACPI 14411spec does in fact allow recursive method calls.) The number of 14412recursive calls is subject to the restrictions imposed by the 14413SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 14414parameter. 14415 14416Implemented support for the SyncLevel parameter for control 14417methods (ACPI 2.0 feature) 14418 14419Fixed a deadlock problem when multiple threads attempted to use 14420the interpreter. 14421 14422Fixed a problem where the string length of a String package 14423element was not always set in a package returned from 14424AcpiEvaluateObject. 14425 14426Fixed a problem where the length of a String package element was 14427not always included in the length of the overall package returned 14428from AcpiEvaluateObject. 14429 14430Added external interfaces (Acpi*) to the ACPI debug memory 14431manager. This manager keeps a list of all outstanding 14432allocations, and can therefore detect memory leaks and attempts to 14433free memory blocks more than once. Useful for code such as the 14434power manager, etc. May not be appropriate for device drivers. 14435Performance with the debug code enabled is slow. 14436 14437The ACPI Global Lock is now an optional hardware element. 14438 14439 ASL Compiler Version X2015: 14440 14441Integrated changes to allow the compiler to be generated on 14442multiple platforms. 14443 14444Linux makefile added to generate the compiler on Linux 14445 14446 Source Code: 14447 14448All platform-specific headers have been moved to their own 14449subdirectory, Include/Platform. 14450 14451New source file added, Interpreter/ammutex.c 14452 14453New header file, Include/acstruct.h 14454 14455 Documentation: 14456 14457The programmer reference has been updated for the following new 14458interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 14459 14460 ------------------------------------------ 14461Summary of changes for this label: 02_08_01 14462 14463Core ACPI CA Subsystem: Fixed a problem where an error was 14464incorrectly returned if the return resource buffer was larger than 14465the actual data (in the resource interfaces). 14466 14467References to named objects within packages are resolved to the 14468 14469full pathname string before packages are returned directly (via 14470the AcpiEvaluateObject interface) or indirectly via the resource 14471interfaces. 14472 14473Linux OS Services Layer (OSL): 14474 14475Improved /proc battery interface. 14476 14477 14478Added C-state debugging output and other miscellaneous fixes. 14479 14480ASL Compiler Version X2014: 14481 14482All defined method arguments can now be used as local variables, 14483including the ones that are not actually passed in as parameters. 14484The compiler tracks initialization of the arguments and issues an 14485exception if they are used without prior assignment (just like 14486locals). 14487 14488The -o option now specifies a filename prefix that is used for all 14489output files, including the AML output file. Otherwise, the 14490default behavior is as follows: 1) the AML goes to the file 14491specified in the DSDT. 2) all other output files use the input 14492source filename as the base. 14493 14494 ------------------------------------------ 14495Summary of changes for this label: 01_25_01 14496 14497Core ACPI CA Subsystem: Restructured the implementation of object 14498store support within the interpreter. This includes support for 14499the Store operator as well as any ASL operators that include a 14500target operand. 14501 14502Partially implemented support for Implicit Result-to-Target 14503conversion. This is when a result object is converted on the fly 14504to the type of an existing target object. Completion of this 14505support is pending further analysis of the ACPI specification 14506concerning this matter. 14507 14508CPU-specific code has been removed from the subsystem (hardware 14509directory). 14510 14511New Power Management Timer functions added 14512 14513Linux OS Services Layer (OSL): Moved system state transition code 14514to the core, fixed it, and modified Linux OSL accordingly. 14515 14516Fixed C2 and C3 latency calculations. 14517 14518 14519We no longer use the compilation date for the version message on 14520initialization, but retrieve the version from AcpiGetSystemInfo(). 14521 14522Incorporated for fix Sony VAIO machines. 14523 14524Documentation: The Programmer Reference has been updated and 14525reformatted. 14526 14527 14528ASL Compiler: Version X2013: Fixed a problem where the line 14529numbering and error reporting could get out of sync in the 14530presence of multiple include files. 14531 14532 ------------------------------------------ 14533Summary of changes for this label: 01_15_01 14534 14535Core ACPI CA Subsystem: 14536 14537Implemented support for type conversions in the execution of the 14538ASL Concatenate operator (The second operand is converted to 14539match the type of the first operand before concatenation.) 14540 14541Support for implicit source operand conversion is partially 14542implemented. The ASL source operand types Integer, Buffer, and 14543String are freely interchangeable for most ASL operators and are 14544converted by the interpreter on the fly as required. Implicit 14545Target operand conversion (where the result is converted to the 14546target type before storing) is not yet implemented. 14547 14548Support for 32-bit and 64-bit BCD integers is implemented. 14549 14550Problem fixed where a field read on an aligned field could cause a 14551read past the end of the field. 14552 14553New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 14554does not return a value, but the caller expects one. (The ASL 14555compiler flags this as a warning.) 14556 14557ASL Compiler: 14558 14559Version X2011: 145601. Static typechecking of all operands is implemented. This 14561prevents the use of invalid objects (such as using a Package where 14562an Integer is required) at compile time instead of at interpreter 14563run-time. 145642. The ASL source line is printed with ALL errors and warnings. 145653. Bug fix for source EOF without final linefeed. 145664. Debug option is split into a parse trace and a namespace trace. 145675. Namespace output option (-n) includes initial values for 14568integers and strings. 145696. Parse-only option added for quick syntax checking. 145707. Compiler checks for duplicate ACPI name declarations 14571 14572Version X2012: 145731. Relaxed typechecking to allow interchangeability between 14574strings, integers, and buffers. These types are now converted by 14575the interpreter at runtime. 145762. Compiler reports time taken by each internal subsystem in the 14577debug output file. 14578 14579 14580 ------------------------------------------ 14581Summary of changes for this label: 12_14_00 14582 14583ASL Compiler: 14584 14585This is the first official release of the compiler. Since the 14586compiler requires elements of the Core Subsystem, this label 14587synchronizes everything. 14588 14589------------------------------------------ 14590Summary of changes for this label: 12_08_00 14591 14592 14593Fixed a problem where named references within the ASL definition 14594of both OperationRegions and CreateXXXFields did not work 14595properly. The symptom was an AE_AML_OPERAND_TYPE during 14596initialization of the region/field. This is similar (but not 14597related internally) to the problem that was fixed in the last 14598label. 14599 14600Implemented both 32-bit and 64-bit support for the BCD ASL 14601functions ToBCD and FromBCD. 14602 14603Updated all legal headers to include "2000" in the copyright 14604years. 14605 14606 ------------------------------------------ 14607Summary of changes for this label: 12_01_00 14608 14609Fixed a problem where method invocations within the ASL definition 14610of both OperationRegions and CreateXXXFields did not work 14611properly. The symptom was an AE_AML_OPERAND_TYPE during 14612initialization of the region/field: 14613 14614 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 14615[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 14616(0x3005) 14617 14618Fixed a problem where operators with more than one nested 14619subexpression would fail. The symptoms were varied, by mostly 14620AE_AML_OPERAND_TYPE errors. This was actually a rather serious 14621problem that has gone unnoticed until now. 14622 14623 Subtract (Add (1,2), Multiply (3,4)) 14624 14625Fixed a problem where AcpiGetHandle didn't quite get fixed in the 14626previous build (The prefix part of a relative path was handled 14627incorrectly). 14628 14629Fixed a problem where Operation Region initialization failed if 14630the operation region name was a "namepath" instead of a simple 14631"nameseg". Symptom was an AE_NO_OPERAND error. 14632 14633Fixed a problem where an assignment to a local variable via the 14634indirect RefOf mechanism only worked for the first such 14635assignment. Subsequent assignments were ignored. 14636 14637 ------------------------------------------ 14638Summary of changes for this label: 11_15_00 14639 14640ACPI 2.0 table support with backwards support for ACPI 1.0 and the 146410.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 14642the AML interpreter does NOT have support for the new 2.0 ASL 14643grammar terms at this time. 14644 14645All ACPI hardware access is via the GAS structures in the ACPI 2.0 14646FADT. 14647 14648All physical memory addresses across all platforms are now 64 bits 14649wide. Logical address width remains dependent on the platform 14650(i.e., "void *"). 14651 14652AcpiOsMapMemory interface changed to a 64-bit physical address. 14653 14654The AML interpreter integer size is now 64 bits, as per the ACPI 146552.0 specification. 14656 14657For backwards compatibility with ACPI 1.0, ACPI tables with a 14658revision number less than 2 use 32-bit integers only. 14659 14660Fixed a problem where the evaluation of OpRegion operands did not 14661always resolve them to numbers properly. 14662 14663------------------------------------------ 14664Summary of changes for this label: 10_20_00 14665 14666Fix for CBN_._STA issue. This fix will allow correct access to 14667CBN_ OpRegions when the _STA returns 0x8. 14668 14669Support to convert ACPI constants (Ones, Zeros, One) to actual 14670values before a package object is returned 14671 14672Fix for method call as predicate to if/while construct causing 14673incorrect if/while behavior 14674 14675Fix for Else block package lengths sometimes calculated wrong (if 14676block > 63 bytes) 14677 14678Fix for Processor object length field, was always zero 14679 14680Table load abort if FACP sanity check fails 14681 14682Fix for problem with Scope(name) if name already exists 14683 14684Warning emitted if a named object referenced cannot be found 14685(resolved) during method execution. 14686 14687 14688 14689 14690 14691------------------------------------------ 14692Summary of changes for this label: 9_29_00 14693 14694New table initialization interfaces: AcpiInitializeSubsystem no 14695longer has any parameters AcpiFindRootPointer - Find the RSDP (if 14696necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 14697>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 14698AcpiLoadTables 14699 14700Note: These interface changes require changes to all existing OSDs 14701 14702The PCI_Config default address space handler is always installed 14703at the root namespace object. 14704 14705------------------------------------------- 14706Summary of changes for this label: 09_15_00 14707 14708The new initialization architecture is implemented. New 14709interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 14710AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 14711 14712(Namespace is automatically loaded when a table is loaded) 14713 14714The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1471552 bytes to 32 bytes. There is usually one of these for every 14716namespace object, so the memory savings is significant. 14717 14718Implemented just-in-time evaluation of the CreateField operators. 14719 14720Bug fixes for IA-64 support have been integrated. 14721 14722Additional code review comments have been implemented 14723 14724The so-called "third pass parse" has been replaced by a final walk 14725through the namespace to initialize all operation regions (address 14726spaces) and fields that have not yet been initialized during the 14727execution of the various _INI and REG methods. 14728 14729New file - namespace/nsinit.c 14730 14731------------------------------------------- 14732Summary of changes for this label: 09_01_00 14733 14734Namespace manager data structures have been reworked to change the 14735primary object from a table to a single object. This has 14736resulted in dynamic memory savings of 3X within the namespace and 147372X overall in the ACPI CA subsystem. 14738 14739Fixed problem where the call to AcpiEvFindPciRootBuses was 14740inadvertently left commented out. 14741 14742Reduced the warning count when generating the source with the GCC 14743compiler. 14744 14745Revision numbers added to each module header showing the 14746SourceSafe version of the file. Please refer to this version 14747number when giving us feedback or comments on individual modules. 14748 14749The main object types within the subsystem have been renamed to 14750clarify their purpose: 14751 14752ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 14753ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 14754ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 14755 14756NOTE: no changes to the initialization sequence are included in 14757this label. 14758 14759------------------------------------------- 14760Summary of changes for this label: 08_23_00 14761 14762Fixed problem where TerminateControlMethod was being called 14763multiple times per method 14764 14765Fixed debugger problem where single stepping caused a semaphore to 14766be oversignalled 14767 14768Improved performance through additional parse object caching - 14769added ACPI_EXTENDED_OP type 14770 14771------------------------------------------- 14772Summary of changes for this label: 08_10_00 14773 14774Parser/Interpreter integration: Eliminated the creation of 14775complete parse trees for ACPI tables and control methods. 14776Instead, parse subtrees are created and then deleted as soon as 14777they are processed (Either entered into the namespace or executed 14778by the interpreter). This reduces the use of dynamic kernel 14779memory significantly. (about 10X) 14780 14781Exception codes broken into classes and renumbered. Be sure to 14782recompile all code that includes acexcep.h. Hopefully we won't 14783have to renumber the codes again now that they are split into 14784classes (environment, programmer, AML code, ACPI table, and 14785internal). 14786 14787Fixed some additional alignment issues in the Resource Manager 14788subcomponent 14789 14790Implemented semaphore tracking in the AcpiExec utility, and fixed 14791several places where mutexes/semaphores were being unlocked 14792without a corresponding lock operation. There are no known 14793semaphore or mutex "leaks" at this time. 14794 14795Fixed the case where an ASL Return operator is used to return an 14796unnamed package. 14797 14798------------------------------------------- 14799Summary of changes for this label: 07_28_00 14800 14801Fixed a problem with the way addresses were calculated in 14802AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 14803manifested itself when a Field was created with WordAccess or 14804DwordAccess, but the field unit defined within the Field was less 14805 14806than a Word or Dword. 14807 14808Fixed a problem in AmlDumpOperands() module's loop to pull 14809operands off of the operand stack to display information. The 14810problem manifested itself as a TLB error on 64-bit systems when 14811accessing an operand stack with two or more operands. 14812 14813Fixed a problem with the PCI configuration space handlers where 14814context was getting confused between accesses. This required a 14815change to the generic address space handler and address space 14816setup definitions. Handlers now get both a global handler context 14817(this is the one passed in by the user when executing 14818AcpiInstallAddressSpaceHandler() and a specific region context 14819that is unique to each region (For example, the _ADR, _SEG and 14820_BBN values associated with a specific region). The generic 14821function definitions have changed to the following: 14822 14823typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 14824UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 14825*HandlerContext, // This used to be void *Context void 14826*RegionContext); // This is an additional parameter 14827 14828typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 14829RegionHandle, UINT32 Function, void *HandlerContext, void 14830**RegionContext); // This used to be **ReturnContext 14831 14832------------------------------------------- 14833Summary of changes for this label: 07_21_00 14834 14835Major file consolidation and rename. All files within the 14836interpreter have been renamed as well as most header files. This 14837was done to prevent collisions with existing files in the host 14838OSs -- filenames such as "config.h" and "global.h" seem to be 14839quite common. The VC project files have been updated. All 14840makefiles will require modification. 14841 14842The parser/interpreter integration continues in Phase 5 with the 14843implementation of a complete 2-pass parse (the AML is parsed 14844twice) for each table; This avoids the construction of a huge 14845parse tree and therefore reduces the amount of dynamic memory 14846required by the subsystem. Greater use of the parse object cache 14847means that performance is unaffected. 14848 14849Many comments from the two code reviews have been rolled in. 14850 14851The 64-bit alignment support is complete. 14852 14853------------------------------------------- 14854Summary of changes for this label: 06_30_00 14855 14856With a nod and a tip of the hat to the technology of yesteryear, 14857we've added support in the source code for 80 column output 14858devices. The code is now mostly constrained to 80 columns or 14859less to support environments and editors that 1) cannot display 14860or print more than 80 characters on a single line, and 2) cannot 14861disable line wrapping. 14862 14863A major restructuring of the namespace data structure has been 14864completed. The result is 1) cleaner and more 14865understandable/maintainable code, and 2) a significant reduction 14866in the dynamic memory requirement for each named ACPI object 14867(almost half). 14868 14869------------------------------------------- 14870Summary of changes for this label: 06_23_00 14871 14872Linux support has been added. In order to obtain approval to get 14873the ACPI CA subsystem into the Linux kernel, we've had to make 14874quite a few changes to the base subsystem that will affect all 14875users (all the changes are generic and OS- independent). The 14876effects of these global changes have been somewhat far reaching. 14877Files have been merged and/or renamed and interfaces have been 14878renamed. The major changes are described below. 14879 14880Osd* interfaces renamed to AcpiOs* to eliminate namespace 14881pollution/confusion within our target kernels. All OSD 14882interfaces must be modified to match the new naming convention. 14883 14884Files merged across the subsystem. A number of the smaller source 14885and header files have been merged to reduce the file count and 14886increase the density of the existing files. There are too many 14887to list here. In general, makefiles that call out individual 14888files will require rebuilding. 14889 14890Interpreter files renamed. All interpreter files now have the 14891prefix am* instead of ie* and is*. 14892 14893Header files renamed: The acapi.h file is now acpixf.h. The 14894acpiosd.h file is now acpiosxf.h. We are removing references to 14895the acronym "API" since it is somewhat windowsy. The new name is 14896"external interface" or xface or xf in the filenames.j 14897 14898 14899All manifest constants have been forced to upper case (some were 14900mixed case.) Also, the string "ACPI_" has been prepended to many 14901(not all) of the constants, typedefs, and structs. 14902 14903The globals "DebugLevel" and "DebugLayer" have been renamed 14904"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 14905 14906All other globals within the subsystem are now prefixed with 14907"AcpiGbl_" Internal procedures within the subsystem are now 14908prefixed with "Acpi" (with only a few exceptions). The original 14909two-letter abbreviation for the subcomponent remains after "Acpi" 14910- for example, CmCallocate became AcpiCmCallocate. 14911 14912Added a source code translation/conversion utility. Used to 14913generate the Linux source code, it can be modified to generate 14914other types of source as well. Can also be used to cleanup 14915existing source by removing extraneous spaces and blank lines. 14916Found in tools/acpisrc/* 14917 14918OsdUnMapMemory was renamed to OsdUnmapMemory and then 14919AcpiOsUnmapMemory. (UnMap became Unmap). 14920 14921A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 14922When set to one, this indicates that the caller wants to use the 14923 14924semaphore as a mutex, not a counting semaphore. ACPI CA uses 14925both types. However, implementers of this call may want to use 14926different OS primitives depending on the type of semaphore 14927requested. For example, some operating systems provide separate 14928 14929"mutex" and "semaphore" interfaces - where the mutex interface is 14930much faster because it doesn't have all the overhead of a full 14931semaphore implementation. 14932 14933Fixed a deadlock problem where a method that accesses the PCI 14934address space can block forever if it is the first access to the 14935space. 14936 14937------------------------------------------- 14938Summary of changes for this label: 06_02_00 14939 14940Support for environments that cannot handle unaligned data 14941accesses (e.g. firmware and OS environments devoid of alignment 14942handler technology namely SAL/EFI and the IA-64 Linux kernel) has 14943been added (via configurable macros) in these three areas: - 14944Transfer of data from the raw AML byte stream is done via byte 14945moves instead of word/dword/qword moves. - External objects are 14946aligned within the user buffer, including package elements (sub- 14947objects). - Conversion of name strings to UINT32 Acpi Names is now 14948done byte-wise. 14949 14950The Store operator was modified to mimic Microsoft's 14951implementation when storing to a Buffer Field. 14952 14953Added a check of the BM_STS bit before entering C3. 14954 14955The methods subdirectory has been obsoleted and removed. A new 14956file, cmeval.c subsumes the functionality. 14957 14958A 16-bit (DOS) version of AcpiExec has been developed. The 14959makefile is under the acpiexec directory. 14960