changes.txt revision 249112
1168515Sgshapiro---------------------------------------- 2168515Sgshapiro28 March 2013. Summary of changes for version 20130328: 3168515Sgshapiro 4132943Sgshapiro1) ACPICA kernel-resident subsystem: 5266692Sgshapiro 6132943SgshapiroFixed several possible race conditions with the internal object reference 7168515Sgshapirocounting mechanism. Some of the external ACPICA interfaces update object 890792Sgshapiroreference counts without holding the interpreter or namespace lock. This 9168515Sgshapirochange adds a spinlock to protect reference count updates on the internal 1090792SgshapiroACPICA objects. Reported by and with assistance from Andriy Gapon 11168515Sgshapiro(avg@FreeBSD.org). 12168515Sgshapiro 1390792SgshapiroFADT support: Removed an extraneous warning for very large GPE register 1490792Sgshapirosets. This change removes a size mismatch warning if the legacy length 1590792Sgshapirofield for a GPE register set is larger than the 64-bit GAS structure can 1690792Sgshapiroaccommodate. GPE register sets can be larger than the 255-bit width 1790792Sgshapirolimitation of the GAS structure. Linn Crosetto (linn@hp.com). 18168515Sgshapiro 1990792Sgshapiro_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 20168515Sgshapiroreturn from this interface. Handles a possible timeout case if 2190792SgshapiroACPI_WAIT_FOREVER is modified by the host to be a value less than 2290792Sgshapiro"forever". Jung-uk Kim. 23168515Sgshapiro 24168515SgshapiroPredefined name support: Add allowed/required argument type information to 25168515Sgshapirothe master predefined info table. This change adds the infrastructure to 26168515Sgshapiroenable typechecking on incoming arguments for all predefined 27168515Sgshapiromethods/objects. It does not actually contain the code that will fully 28168515Sgshapiroutilize this information, this is still under development. Also condenses 29168515Sgshapirosome duplicate code for the predefined names into a new module, 30168515Sgshapiroutilities/utpredef.c 31168515Sgshapiro 32168515SgshapiroExample Code and Data Size: These are the sizes for the OS-independent 33168515Sgshapiroacpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3490792Sgshapirodebug version of the code includes the debug output trace mechanism and 3590792Sgshapirohas a much larger code and data size. 36168515Sgshapiro 37168515Sgshapiro Previous Release: 38168515Sgshapiro Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 39168515Sgshapiro Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 40168515Sgshapiro Current Release: 41168515Sgshapiro Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 42168515Sgshapiro Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 43168515Sgshapiro 44168515Sgshapiro 45168515Sgshapiro2) iASL Compiler/Disassembler and Tools: 46168515Sgshapiro 4790792SgshapiroiASL: Implemented a new option to simplify the development of ACPI-related 4890792SgshapiroBIOS code. Adds support for a new "offset table" output file. The -so 49168515Sgshapirooption will create a C table containing the AML table offsets of various 50168515Sgshapironamed objects in the namespace so that BIOS code can modify them easily at 5190792Sgshapiroboot time. This can simplify BIOS runtime code by eliminating expensive 52168515Sgshapirosearches for "magic values", enhancing boot times and adding greater 53168515Sgshapiroreliability. With assistance from Lee Hamel. 54168515Sgshapiro 55168515SgshapiroiASL: Allow additional predefined names to return zero-length packages. 56168515SgshapiroNow, all predefined names that are defined by the ACPI specification to 57168515Sgshapiroreturn a "variable-length package of packages" are allowed to return a 5890792Sgshapirozero length top-level package. This allows the BIOS to tell the host that 59168515Sgshapirothe requested feature is not supported, and supports existing BIOS/ASL 60168515Sgshapirocode and practices. 6190792Sgshapiro 6290792SgshapiroiASL: Changed the "result not used" warning to an error. This is the case 63168515Sgshapirowhere an ASL operator is effectively a NOOP because the result of the 64168515Sgshapirooperation is not stored anywhere. For example: 65168515Sgshapiro Add (4, Local0) 6690792SgshapiroThere is no target (missing 3rd argument), nor is the function return 6790792Sgshapirovalue used. This is potentially a very serious problem -- since the code 68168515Sgshapirowas probably intended to do something, but for whatever reason, the value 69168515Sgshapirowas not stored. Therefore, this issue has been upgraded from a warning to 70168515Sgshapiroan error. 7190792Sgshapiro 72168515SgshapiroAcpiHelp: Added allowable/required argument types to the predefined names 7390792Sgshapiroinfo display. This feature utilizes the recent update to the predefined 74168515Sgshapironames table (above). 75168515Sgshapiro 76261363Sgshapiro---------------------------------------- 7790792Sgshapiro14 February 2013. Summary of changes for version 20130214: 78168515Sgshapiro 7990792Sgshapiro1) ACPICA Kernel-resident Subsystem: 80112810Sgshapiro 81168515SgshapiroFixed a possible regression on some hosts: Reinstated the safe return 82168515Sgshapiromacros (return_ACPI_STATUS, etc.) that ensure that the argument is 83168515Sgshapiroevaluated only once. Although these macros are not needed for the ACPICA 84code itself, they are often used by ACPI-related host device drivers where 85the safe feature may be necessary. 86 87Fixed several issues related to the ACPI 5.0 reduced hardware support 88(SOC): Now ensure that if the platform declares itself as hardware-reduced 89via the FADT, the following functions become NOOPs (and always return 90AE_OK) because ACPI is always enabled by definition on these machines: 91 AcpiEnable 92 AcpiDisable 93 AcpiHwGetMode 94 AcpiHwSetMode 95 96Dynamic Object Repair: Implemented additional runtime repairs for 97predefined name return values. Both of these repairs can simplify code in 98the related device drivers that invoke these methods: 991) For the _STR and _MLS names, automatically repair/convert an ASCII 100string to a Unicode buffer. 1012) For the _CRS, _PRS, and _DMA names, return a resource descriptor with a 102lone end tag descriptor in the following cases: A Return(0) was executed, 103a null buffer was returned, or no object at all was returned (non-slack 104mode only). Adds a new file, nsconvert.c 105ACPICA BZ 998. Bob Moore, Lv Zheng. 106 107Resource Manager: Added additional code to prevent possible infinite loops 108while traversing corrupted or ill-formed resource template buffers. Check 109for zero-length resource descriptors in all code that loops through 110resource templates (the length field is used to index through the 111template). This change also hardens the external AcpiWalkResources and 112AcpiWalkResourceBuffer interfaces. 113 114Local Cache Manager: Enhanced the main data structure to eliminate an 115unnecessary mechanism to access the next object in the list. Actually 116provides a small performance enhancement for hosts that use the local 117ACPICA cache manager. Jung-uk Kim. 118 119Example Code and Data Size: These are the sizes for the OS-independent 120acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 121debug version of the code includes the debug output trace mechanism and 122has a much larger code and data size. 123 124 Previous Release: 125 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 126 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 127 Current Release: 128 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 129 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 130 131 1322) iASL Compiler/Disassembler and Tools: 133 134iASL/Disassembler: Fixed several issues with the definition of the ACPI 1355.0 RASF table (RAS Feature Table). This change incorporates late changes 136that were made to the ACPI 5.0 specification. 137 138iASL/Disassembler: Added full support for the following new ACPI tables: 139 1) The MTMR table (MID Timer Table) 140 2) The VRTC table (Virtual Real Time Clock Table). 141Includes header file, disassembler, table compiler, and template support 142for both tables. 143 144iASL: Implemented compile-time validation of package objects returned by 145predefined names. This new feature validates static package objects 146returned by the various predefined names defined to return packages. Both 147object types and package lengths are validated, for both parent packages 148and sub-packages, if any. The code is similar in structure and behavior to 149the runtime repair mechanism within the AML interpreter and uses the 150existing predefined name information table. Adds a new file, aslprepkg.c. 151ACPICA BZ 938. 152 153iASL: Implemented auto-detection of binary ACPI tables for disassembly. 154This feature detects a binary file with a valid ACPI table header and 155invokes the disassembler automatically. Eliminates the need to 156specifically invoke the disassembler with the -d option. ACPICA BZ 862. 157 158iASL/Disassembler: Added several warnings for the case where there are 159unresolved control methods during the disassembly. This can potentially 160cause errors when the output file is compiled, because the disassembler 161assumes zero method arguments in these cases (it cannot determine the 162actual number of arguments without resolution/definition of the method). 163 164Debugger: Added support to display all resources with a single command. 165Invocation of the resources command with no arguments will now display all 166resources within the current namespace. 167 168AcpiHelp: Added descriptive text for each ACPICA exception code displayed 169via the -e option. 170 171---------------------------------------- 17217 January 2013. Summary of changes for version 20130117: 173 1741) ACPICA Kernel-resident Subsystem: 175 176Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 177return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 178objects to return a package containing one integer, most BIOS code returns 179two integers and the previous code reflects that. However, we also need to 180support BIOS code that actually implements to the ACPI spec, and this 181change reflects this. 182 183Fixed two issues with the ACPI_DEBUG_PRINT macros: 1841) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 185C compilers that require this support. 1862) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 187ACPI_DEBUG is already used by many of the various hosts. 188 189Updated all ACPICA copyrights and signons to 2013. Added the 2013 190copyright to all module headers and signons, including the standard Linux 191header. This affects virtually every file in the ACPICA core subsystem, 192iASL compiler, all ACPICA utilities, and the test suites. 193 194Example Code and Data Size: These are the sizes for the OS-independent 195acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 196debug version of the code includes the debug output trace mechanism and 197has a much larger code and data size. 198 199 Previous Release: 200 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 201 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 202 Current Release: 203 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 204 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 205 206 2072) iASL Compiler/Disassembler and Tools: 208 209Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 210prevent a possible fault on some hosts. Some C libraries modify the arg 211pointer parameter to vfprintf making it difficult to call it twice in the 212AcpiOsVprintf function. Use a local buffer to workaround this issue. This 213does not affect the Windows OSL since the Win C library does not modify 214the arg pointer. Chao Guan, Bob Moore. 215 216iASL: Fixed a possible infinite loop when the maximum error count is 217reached. If an output file other than the .AML file is specified (such as 218a listing file), and the maximum number of errors is reached, do not 219attempt to flush data to the output file(s) as the compiler is aborting. 220This can cause an infinite loop as the max error count code essentially 221keeps calling itself. 222 223iASL/Disassembler: Added an option (-in) to ignore NOOP opcodes/operators. 224Implemented for both the compiler and the disassembler. Often, the NOOP 225opcode is used as padding for packages that are changed dynamically by the 226BIOS. When disassembled and recompiled, these NOOPs will cause syntax 227errors. This option causes the disassembler to ignore all NOOP opcodes 228(0xA3), and it also causes the compiler to ignore all ASL source code NOOP 229statements as well. 230 231Debugger: Enhanced the Sleep command to execute all sleep states. This 232change allows Sleep to be invoked with no arguments and causes the 233debugger to execute all of the sleep states, 0-5, automatically. 234 235---------------------------------------- 23620 December 2012. Summary of changes for version 20121220: 237 2381) ACPICA Kernel-resident Subsystem: 239 240Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 241alternate entry point for AcpiWalkResources and improves the usability of 242the resource manager by accepting as input a buffer containing the output 243of either a _CRS, _PRS, or _AEI method. The key functionality is that the 244input buffer is not deleted by this interface so that it can be used by 245the host later. See the ACPICA reference for details. 246 247Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 248(DSDT version < 2). The constant will be truncated and this warning 249reflects that behavior. 250 251Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 252ExtendedInterrupt, and GpioInt descriptors. This change adds support to 253both get and set the new wake bit in these descriptors, separately from 254the existing share bit. Reported by Aaron Lu. 255 256Interpreter: Fix Store() when an implicit conversion is not possible. For 257example, in the cases such as a store of a string to an existing package 258object, implement the store as a CopyObject(). This is a small departure 259from the ACPI specification which states that the control method should be 260aborted in this case. However, the ASLTS suite depends on this behavior. 261 262Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 263macros: check if debug output is currently enabled as soon as possible to 264minimize performance impact if debug is in fact not enabled. 265 266Source code restructuring: Cleanup to improve modularity. The following 267new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 268psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 269Associated makefiles and project files have been updated. 270 271Changed an exception code for LoadTable operator. For the case where one 272of the input strings is too long, change the returned exception code from 273AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 274 275Fixed a possible memory leak in dispatcher error path. On error, delete 276the mutex object created during method mutex creation. Reported by 277tim.gardner@canonical.com. 278 279Example Code and Data Size: These are the sizes for the OS-independent 280acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 281debug version of the code includes the debug output trace mechanism and 282has a much larger code and data size. 283 284 Previous Release: 285 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 286 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 287 Current Release: 288 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 289 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 290 291 2922) iASL Compiler/Disassembler and Tools: 293 294iASL: Disallow a method call as argument to the ObjectType ASL operator. 295This change tracks an errata to the ACPI 5.0 document. The AML grammar 296will not allow the interpreter to differentiate between a method and a 297method invocation when these are used as an argument to the ObjectType 298operator. The ACPI specification change is to disallow a method invocation 299(UserTerm) for the ObjectType operator. 300 301Finish support for the TPM2 and CSRT tables in the headers, table 302compiler, and disassembler. 303 304Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 305always expires immediately if the semaphore is not available. The original 306code was using a relative-time timeout, but sem_timedwait requires the use 307of an absolute time. 308 309iASL: Added a remark if the Timer() operator is used within a 32-bit 310table. This operator returns a 64-bit time value that will be truncated 311within a 32-bit table. 312 313iASL Source code restructuring: Cleanup to improve modularity. The 314following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 315aslmethod.c, and aslfileio.c. Associated makefiles and project files have 316been updated. 317 318 319---------------------------------------- 32014 November 2012. Summary of changes for version 20121114: 321 3221) ACPICA Kernel-resident Subsystem: 323 324Implemented a performance enhancement for ACPI/AML Package objects. This 325change greatly increases the performance of Package objects within the 326interpreter. It changes the processing of reference counts for packages by 327optimizing for the most common case where the package sub-objects are 328either Integers, Strings, or Buffers. Increases the overall performance of 329the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 2X.) 330Chao Guan. ACPICA BZ 943. 331 332Implemented and deployed common macros to extract flag bits from resource 333descriptors. Improves readability and maintainability of the code. Fixes a 334problem with the UART serial bus descriptor for the number of data bits 335flags (was incorrectly 2 bits, should be 3). 336 337Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 338of the macros and changed the SETx macros to the style of (destination, 339source). Also added ACPI_CASTx companion macros. Lv Zheng. 340 341Example Code and Data Size: These are the sizes for the OS-independent 342acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 343debug version of the code includes the debug output trace mechanism and 344has a much larger code and data size. 345 346 Previous Release: 347 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 348 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 349 Current Release: 350 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 351 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 352 353 3542) iASL Compiler/Disassembler and Tools: 355 356Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 357adds the ShareAndWake and ExclusiveAndWake flags which were added to the 358Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 359 360Disassembler: Fixed a problem with external declaration generation. Fixes 361a problem where an incorrect pathname could be generated for an external 362declaration if the original reference to the object includes leading 363carats (^). ACPICA BZ 984. 364 365Debugger: Completed a major update for the Disassemble<method> command. 366This command was out-of-date and did not properly disassemble control 367methods that had any reasonable complexity. This fix brings the command up 368to the same level as the rest of the disassembler. Adds one new file, 369dmdeferred.c, which is existing code that is now common with the main 370disassembler and the debugger disassemble command. ACPICA MZ 978. 371 372iASL: Moved the parser entry prototype to avoid a duplicate declaration. 373Newer versions of Bison emit this prototype, so moved the prototype out of 374the iASL header to where it is actually used in order to avoid a duplicate 375declaration. 376 377iASL/Tools: Standardized use of the stream I/O functions: 378 1) Ensure check for I/O error after every fopen/fread/fwrite 379 2) Ensure proper order of size/count arguments for fread/fwrite 380 3) Use test of (Actual != Requested) after all fwrite, and most fread 381 4) Standardize I/O error messages 382Improves reliability and maintainability of the code. Bob Moore, Lv Zheng. 383ACPICA BZ 981. 384 385Disassembler: Prevent duplicate External() statements. During generation 386of external statements, detect similar pathnames that are actually 387duplicates such as these: 388 External (\ABCD) 389 External (ABCD) 390Remove all leading '\' characters from pathnames during the external 391statement generation so that duplicates will be detected and tossed. 392ACPICA BZ 985. 393 394Tools: Replace low-level I/O with stream I/O functions. Replace 395open/read/write/close with the stream I/O equivalents 396fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 397Moore. 398 399AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 400name header so that AcpiXtract recognizes the output file/table. 401 402iASL: Remove obsolete -2 option flag. Originally intended to force the 403compiler/disassembler into an ACPI 2.0 mode, this was never implemented 404and the entire concept is now obsolete. 405 406---------------------------------------- 40718 October 2012. Summary of changes for version 20121018: 408 409 4101) ACPICA Kernel-resident Subsystem: 411 412Updated support for the ACPI 5.0 MPST table. Fixes some problems 413introduced by late changes to the table as it was added to the ACPI 5.0 414specification. Includes header, disassembler, and data table compiler 415support as well as a new version of the MPST template. 416 417AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 4185.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 419methods: _HID, _CID, and _UID. 420 421Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 422ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 423name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 424names for their various drivers. Affects the AcpiGetObjectInfo external 425interface, and other internal interfaces as well. 426 427Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 428This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 429on machines that support non-aligned transfers. Optimizes for this case 430rather than using a strncpy. With assistance from Zheng Lv. 431 432Resource Manager: Small fix for buffer size calculation. Fixed a one byte 433error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 434 435Added a new debug print message for AML mutex objects that are force- 436released. At control method termination, any currently acquired mutex 437objects are force-released. Adds a new debug-only message for each one 438that is released. 439 440Audited/updated all ACPICA return macros and the function debug depth 441counter: 1) Ensure that all functions that use the various TRACE macros 442also use the appropriate ACPICA return macros. 2) Ensure that all normal 443return statements surround the return expression (value) with parens to 444ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 445Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 446 447Global source code changes/maintenance: All extra lines at the start and 448end of each source file have been removed for consistency. Also, within 449comments, all new sentences start with a single space instead of a double 450space, again for consistency across the code base. 451 452Example Code and Data Size: These are the sizes for the OS-independent 453acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 454debug version of the code includes the debug output trace mechanism and 455has a much larger code and data size. 456 457 Previous Release: 458 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 459 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 460 Current Release: 461 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 462 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 463 464 4652) iASL Compiler/Disassembler and Tools: 466 467AcpiExec: Improved the algorithm used for memory leak/corruption 468detection. Added some intelligence to the code that maintains the global 469list of allocated memory. The list is now ordered by allocated memory 470address, significantly improving performance. When running AcpiExec on 471the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 472on the platform and/or the environment. Note, this performance 473enhancement affects the AcpiExec utility only, not the kernel-resident 474ACPICA code. 475 476Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 477the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 478incorrect table offset reported for invalid opcodes. Report the original 47932-bit value for bad ACPI_NAMEs (as well as the repaired name.) 480 481Disassembler: Enhanced the -vt option to emit the binary table data in 482hex format to assist with debugging. 483 484Fixed a potential filename buffer overflow in osunixdir.c. Increased the 485size of file structure. Colin Ian King. 486 487---------------------------------------- 48813 September 2012. Summary of changes for version 20120913: 489 490 4911) ACPICA Kernel-resident Subsystem: 492 493ACPI 5.0: Added two new notify types for the Hardware Error Notification 494Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 495and 496MCE(6). 497 498Table Manager: Merged/removed duplicate code in the root table resize 499functions. One function is external, the other is internal. Lv Zheng, 500ACPICA 501BZ 846. 502 503Makefiles: Completely removed the obsolete "Linux" makefiles under 504acpica/generate/linux. These makefiles are obsolete and have been replaced 505by 506the generic unix makefiles under acpica/generate/unix. 507 508Makefiles: Ensure that binary files always copied properly. Minor rule 509change 510to ensure that the final binary output files are always copied up to the 511appropriate binary directory (bin32 or bin64.) 512 513Example Code and Data Size: These are the sizes for the OS-independent 514acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 515debug 516version of the code includes the debug output trace mechanism and has a 517much 518larger code and data size. 519 520 Previous Release: 521 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 522 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 523 Current Release: 524 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 525 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 526 527 5282) iASL Compiler/Disassembler and Tools: 529 530Disassembler: Fixed a possible fault during the disassembly of resource 531descriptors when a second parse is required because of the invocation of 532external control methods within the table. With assistance from 533adq@lidskialf.net. ACPICA BZ 976. 534 535iASL: Fixed a namepath optimization problem. An error can occur if the 536parse 537node that contains the namepath to be optimized does not have a parent 538node 539that is a named object. This change fixes the problem. 540 541iASL: Fixed a regression where the AML file is not deleted on errors. The 542AML 543output file should be deleted if there are any errors during the compiler. 544The 545only exception is if the -f (force output) option is used. ACPICA BZ 974. 546 547iASL: Added a feature to automatically increase internal line buffer 548sizes. 549Via realloc(), automatically increase the internal line buffer sizes as 550necessary to support very long source code lines. The current version of 551the 552preprocessor requires a buffer long enough to contain full source code 553lines. 554This change increases the line buffer(s) if the input lines go beyond the 555current buffer size. This eliminates errors that occurred when a source 556code 557line was longer than the buffer. 558 559iASL: Fixed a problem with constant folding in method declarations. The 560SyncLevel term is a ByteConstExpr, and incorrect code would be generated 561if a 562Type3 opcode was used. 563 564Debugger: Improved command help support. For incorrect argument count, 565display 566full help for the command. For help command itself, allow an argument to 567specify a command. 568 569Test Suites: Several bug fixes for the ASLTS suite reduces the number of 570errors during execution of the suite. Guan Chao. 571 572---------------------------------------- 57316 August 2012. Summary of changes for version 20120816: 574 575 5761) ACPICA Kernel-resident Subsystem: 577 578Removed all use of the deprecated _GTS and _BFS predefined methods. The 579_GTS 580(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 581deprecated and will probably be removed from the ACPI specification. 582Windows 583does not invoke them, and reportedly never will. The final nail in the 584coffin 585is that the ACPI specification states that these methods must be run with 586interrupts off, which is not going to happen in a kernel interpreter. 587Note: 588Linux has removed all use of the methods also. It was discovered that 589invoking these functions caused failures on some machines, probably 590because 591they were never tested since Windows does not call them. Affects two 592external 593interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 594ACPICA BZ 969. 595 596Implemented support for complex bit-packed buffers returned from the _PLD 597(Physical Location of Device) predefined method. Adds a new external 598interface, AcpiDecodePldBuffer that parses the buffer into a more usable C 599structure. Note: C Bitfields cannot be used for this type of predefined 600structure since the memory layout of individual bitfields is not defined 601by 602the C language. In addition, there are endian concerns where a compiler 603will 604change the bitfield ordering based on the machine type. The new ACPICA 605interface eliminates these issues, and should be called after _PLD is 606executed. ACPICA BZ 954. 607 608Implemented a change to allow a scope change to root (via "Scope (\)") 609during 610execution of module-level ASL code (code that is executed at table load 611time.) Lin Ming. 612 613Added the Windows8/Server2012 string for the _OSI method. This change adds 614a 615new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 6162012. 617 618Added header support for the new ACPI tables DBG2 (Debug Port Table Type 6192) 620and CSRT (Core System Resource Table). 621 622Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 623names. This simplifies access to the buffers returned by these predefined 624names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 625 626GPE support: Removed an extraneous parameter from the various low-level 627internal GPE functions. Tang Feng. 628 629Removed the linux makefiles from the unix packages. The generate/linux 630makefiles are obsolete and have been removed from the unix tarball release 631packages. The replacement makefiles are under generate/unix, and there is 632a 633top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 634 635Updates for Unix makefiles: 6361) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 6372) Update linker flags (move to end of command line) for AcpiExec utility. 638Guan Chao. 639 640Split ACPICA initialization functions to new file, utxfinit.c. Split from 641utxface.c to improve modularity and reduce file size. 642 643Example Code and Data Size: These are the sizes for the OS-independent 644acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 645debug version of the code includes the debug output trace mechanism and 646has a 647much larger code and data size. 648 649 Previous Release: 650 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 651 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 652 Current Release: 653 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 654 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 655 656 6572) iASL Compiler/Disassembler and Tools: 658 659iASL: Fixed a problem with constant folding for fixed-length constant 660expressions. The constant-folding code was not being invoked for constant 661expressions that allow the use of type 3/4/5 opcodes to generate constants 662for expressions such as ByteConstExpr, WordConstExpr, etc. This could 663result 664in the generation of invalid AML bytecode. ACPICA BZ 970. 665 666iASL: Fixed a generation issue on newer versions of Bison. Newer versions 667apparently automatically emit some of the necessary externals. This change 668handles these versions in order to eliminate generation warnings. 669 670Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 671 672Disassembler: Add support to decode _PLD buffers. The decoded buffer 673appears 674within comments in the output file. 675 676Debugger: Fixed a regression with the "Threads" command where 677AE_BAD_PARAMETER was always returned. 678 679---------------------------------------- 68011 July 2012. Summary of changes for version 20120711: 681 6821) ACPICA Kernel-resident Subsystem: 683 684Fixed a possible fault in the return package object repair code. Fixes a 685problem that can occur when a lone package object is wrapped with an outer 686package object in order to force conformance to the ACPI specification. 687Can 688affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 689_DLM, 690_CSD, _PSD, _TSD. 691 692Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 693PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 694ARB_DIS bit must be implemented in the host-dependent C3 processor power 695state 696support. Note, ARB_DIS is obsolete and only applies to older chipsets, 697both 698Intel and other vendors. (for Intel: ICH4-M and earlier) 699 700This change removes the code to disable/enable bus master arbitration 701during 702suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 703causes 704resume problems on some machines. The change has been in use for over 705seven 706years within Linux. 707 708Implemented two new external interfaces to support host-directed dynamic 709ACPI 710table load and unload. They are intended to simplify the host 711implementation 712of hot-plug support: 713 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 714 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 715table. 716See the ACPICA reference for additional details. Adds one new file, 717components/tables/tbxfload.c 718 719Implemented and deployed two new interfaces for errors and warnings that 720are 721known to be caused by BIOS/firmware issues: 722 AcpiBiosError: Prints "ACPI Firmware Error" message. 723 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 724Deployed these new interfaces in the ACPICA Table Manager code for ACPI 725table 726and FADT errors. Additional deployment to be completed as appropriate in 727the 728future. The associated conditional macros are ACPI_BIOS_ERROR and 729ACPI_BIOS_WARNING. See the ACPICA reference for additional details. ACPICA 730BZ 731843. 732 733Implicit notify support: ensure that no memory allocation occurs within a 734critical region. This fix moves a memory allocation outside of the time 735that a 736spinlock is held. Fixes issues on systems that do not allow this behavior. 737Jung-uk Kim. 738 739Split exception code utilities and tables into a new file, 740utilities/utexcep.c 741 742Example Code and Data Size: These are the sizes for the OS-independent 743acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 744debug 745version of the code includes the debug output trace mechanism and has a 746much 747larger code and data size. 748 749 Previous Release: 750 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 751 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 752 Current Release: 753 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 754 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 755 756 7572) iASL Compiler/Disassembler and Tools: 758 759iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 760of 7610. Jung-uk Kim. 762 763Debugger: Enhanced the "tables" command to emit additional information 764about 765the current set of ACPI tables, including the owner ID and flags decode. 766 767Debugger: Reimplemented the "unload" command to use the new 768AcpiUnloadParentTable external interface. This command was disable 769previously 770due to need for an unload interface. 771 772AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 773option 774will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 775 776---------------------------------------- 77720 June 2012. Summary of changes for version 20120620: 778 779 7801) ACPICA Kernel-resident Subsystem: 781 782Implemented support to expand the "implicit notify" feature to allow 783multiple 784devices to be notified by a single GPE. This feature automatically 785generates a 786runtime device notification in the absence of a BIOS-provided GPE control 787method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 788notify is 789provided by ACPICA for Windows compatibility, and is a workaround for BIOS 790AML 791code errors. See the description of the AcpiSetupGpeForWake interface in 792the 793APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 794 795Changed some comments and internal function names to simplify and ensure 796correctness of the Linux code translation. No functional changes. 797 798Example Code and Data Size: These are the sizes for the OS-independent 799acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 800debug 801version of the code includes the debug output trace mechanism and has a 802much 803larger code and data size. 804 805 Previous Release: 806 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 807 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 808 Current Release: 809 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 810 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 811 812 8132) iASL Compiler/Disassembler and Tools: 814 815Disassembler: Added support to emit short, commented descriptions for the 816ACPI 817predefined names in order to improve the readability of the disassembled 818output. ACPICA BZ 959. Changes include: 819 1) Emit descriptions for all standard predefined names (_INI, _STA, 820_PRW, 821etc.) 822 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 823 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 824etc.) 825 826AcpiSrc: Fixed several long-standing Linux code translation issues. 827Argument 828descriptions in function headers are now translated properly to lower case 829and 830underscores. ACPICA BZ 961. Also fixes translation problems such as these: 831(old -> new) 832 i_aSL -> iASL 833 00-7_f -> 00-7F 834 16_k -> 16K 835 local_fADT -> local_FADT 836 execute_oSI -> execute_OSI 837 838iASL: Fixed a problem where null bytes were inadvertently emitted into 839some 840listing files. 841 842iASL: Added the existing debug options to the standard help screen. There 843are 844no longer two different help screens. ACPICA BZ 957. 845 846AcpiHelp: Fixed some typos in the various predefined name descriptions. 847Also 848expand some of the descriptions where appropriate. 849 850iASL: Fixed the -ot option (display compile times/statistics). Was not 851working 852properly for standard output; only worked for the debug file case. 853 854---------------------------------------- 85518 May 2012. Summary of changes for version 20120518: 856 857 8581) ACPICA Core Subsystem: 859 860Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 861defined 862to block until asynchronous events such as notifies and GPEs have 863completed. 864Within ACPICA, it is only called before a notify or GPE handler is 865removed/uninstalled. It also may be useful for the host OS within related 866drivers such as the Embedded Controller driver. See the ACPICA reference 867for 868additional information. ACPICA BZ 868. 869 870ACPI Tables: Added a new error message for a possible overflow failure 871during 872the conversion of FADT 32-bit legacy register addresses to internal common 87364- 874bit GAS structure representation. The GAS has a one-byte "bit length" 875field, 876thus limiting the register length to 255 bits. ACPICA BZ 953. 877 878Example Code and Data Size: These are the sizes for the OS-independent 879acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 880debug 881version of the code includes the debug output trace mechanism and has a 882much 883larger code and data size. 884 885 Previous Release: 886 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 887 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 888 Current Release: 889 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 890 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 891 892 8932) iASL Compiler/Disassembler and Tools: 894 895iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 896macro. 897This keyword was added late in the ACPI 5.0 release cycle and was not 898implemented until now. 899 900Disassembler: Added support for Operation Region externals. Adds missing 901support for operation regions that are defined in another table, and 902referenced locally via a Field or BankField ASL operator. Now generates 903the 904correct External statement. 905 906Disassembler: Several additional fixes for the External() statement 907generation 908related to some ASL operators. Also, order the External() statements 909alphabetically in the disassembler output. Fixes the External() generation 910for 911the Create* field, Alias, and Scope operators: 912 1) Create* buffer field operators - fix type mismatch warning on 913disassembly 914 2) Alias - implement missing External support 915 3) Scope - fix to make sure all necessary externals are emitted. 916 917iASL: Improved pathname support. For include files, merge the prefix 918pathname 919with the file pathname and eliminate unnecessary components. Convert 920backslashes in all pathnames to forward slashes, for readability. Include 921file 922pathname changes affect both #include and Include() type operators. 923 924iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 925end 926of a valid line by inserting a newline and then returning the EOF during 927the 928next call to GetNextLine. Prevents the line from being ignored due to EOF 929condition. 930 931iASL: Implemented some changes to enhance the IDE support (-vi option.) 932Error 933and Warning messages are now correctly recognized for both the source code 934browser and the global error and warning counts. 935 936---------------------------------------- 93720 April 2012. Summary of changes for version 20120420: 938 939 9401) ACPICA Core Subsystem: 941 942Implemented support for multiple notify handlers. This change adds support 943to 944allow multiple system and device notify handlers on Device, Thermal Zone, 945and 946Processor objects. This can simplify the host OS notification 947implementation. 948Also re-worked and restructured the entire notify support code to simplify 949handler installation, handler removal, notify event queuing, and notify 950dispatch to handler(s). Note: there can still only be two global notify 951handlers - one for system notifies and one for device notifies. There are 952no 953changes to the existing handler install/remove interfaces. Lin Ming, Bob 954Moore, Rafael Wysocki. 955 956Fixed a regression in the package repair code where the object reference 957count was calculated incorrectly. Regression was introduced in the commit 958"Support to add Package wrappers". 959 960Fixed a couple possible memory leaks in the AML parser, in the error 961recovery 962path. Jesper Juhl, Lin Ming. 963 964Example Code and Data Size: These are the sizes for the OS-independent 965acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 966debug version of the code includes the debug output trace mechanism and 967has a 968much larger code and data size. 969 970 Previous Release: 971 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 972 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 973 Current Release: 974 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 975 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 976 977 9782) iASL Compiler/Disassembler and Tools: 979 980iASL: Fixed a problem with the resource descriptor support where the 981length 982of the StartDependentFn and StartDependentFnNoPrio descriptors were not 983included in cumulative descriptor offset, resulting in incorrect values 984for 985resource tags within resource descriptors appearing after a 986StartDependent* 987descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 988 989iASL and Preprocessor: Implemented full support for the #line directive to 990correctly track original source file line numbers through the .i 991preprocessor 992output file - for error and warning messages. 993 994iASL: Expand the allowable byte constants for address space IDs. 995Previously, 996the allowable range was 0x80-0xFF (user-defined spaces), now the range is 9970x0A-0xFF to allow for custom and new IDs without changing the compiler. 998 999iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 1000 1001iASL: Add option to completely disable the preprocessor (-Pn). 1002 1003iASL: Now emit all error/warning messages to standard error (stderr) by 1004default (instead of the previous stdout). 1005 1006ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 1007Update 1008for resource descriptor offset fix above. Update/cleanup error output 1009routines. Enable and send iASL errors/warnings to an error logfile 1010(error.txt). Send all other iASL output to a logfile (compiler.txt). Fixed 1011several extraneous "unrecognized operator" messages. 1012 1013---------------------------------------- 101420 March 2012. Summary of changes for version 20120320: 1015 1016 10171) ACPICA Core Subsystem: 1018 1019Enhanced the sleep/wake interfaces to optionally execute the _GTS method 1020(Going To Sleep) and the _BFS method (Back From Sleep). Windows apparently 1021does not execute these methods, and therefore these methods are often 1022untested. It has been seen on some systems where the execution of these 1023methods causes errors and also prevents the machine from entering S5. It 1024is 1025therefore suggested that host operating systems do not execute these 1026methods 1027by default. In the future, perhaps these methods can be optionally 1028executed 1029based on the age of the system and/or what is the newest version of 1030Windows 1031that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 1032and 1033AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 1034Ming. 1035 1036Fixed a problem where the length of the local/common FADT was set too 1037early. 1038The local FADT table length cannot be set to the common length until the 1039original length has been examined. There is code that checks the table 1040length 1041and sets various fields appropriately. This can affect older machines with 1042early FADT versions. For example, this can cause inadvertent writes to the 1043CST_CNT register. Julian Anastasov. 1044 1045Fixed a mapping issue related to a physical table override. Use the 1046deferred 1047mapping mechanism for tables loaded via the physical override OSL 1048interface. 1049This allows for early mapping before the virtual memory manager is 1050available. 1051Thomas Renninger, Bob Moore. 1052 1053Enhanced the automatic return-object repair code: Repair a common problem 1054with 1055predefined methods that are defined to return a variable-length Package of 1056sub-objects. If there is only one sub-object, some BIOS ASL code 1057mistakenly 1058simply returns the single object instead of a Package with one sub-object. 1059This new support will repair this error by wrapping a Package object 1060around 1061the original object, creating the correct and expected Package with one 1062sub- 1063object. Names that can be repaired in this manner include: _ALR, _CSD, 1064_HPX, 1065_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 1066939. 1067 1068Changed the exception code returned for invalid ACPI paths passed as 1069parameters to external interfaces such as AcpiEvaluateObject. Was 1070AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 1071 1072Example Code and Data Size: These are the sizes for the OS-independent 1073acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1074debug 1075version of the code includes the debug output trace mechanism and has a 1076much 1077larger code and data size. 1078 1079 Previous Release: 1080 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 1081 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 1082 Current Release: 1083 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 1084 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 1085 1086 10872) iASL Compiler/Disassembler and Tools: 1088 1089iASL: Added the infrastructure and initial implementation of a integrated 1090C- 1091like preprocessor. This will simplify BIOS development process by 1092eliminating 1093the need for a separate preprocessing step during builds. On Windows, it 1094also 1095eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 1096features including full #define() macro support are still under 1097development. 1098These preprocessor directives are supported: 1099 #define 1100 #elif 1101 #else 1102 #endif 1103 #error 1104 #if 1105 #ifdef 1106 #ifndef 1107 #include 1108 #pragma message 1109 #undef 1110 #warning 1111In addition, these new command line options are supported: 1112 -D <symbol> Define symbol for preprocessor use 1113 -li Create preprocessed output file (*.i) 1114 -P Preprocess only and create preprocessor output file (*.i) 1115 1116Table Compiler: Fixed a problem where the equals operator within an 1117expression 1118did not work properly. 1119 1120Updated iASL to use the current versions of Bison/Flex. Updated the 1121Windows 1122project file to invoke these tools from the standard location. ACPICA BZ 1123904. 1124Versions supported: 1125 Flex for Windows: V2.5.4 1126 Bison for Windows: V2.4.1 1127 1128---------------------------------------- 112915 February 2012. Summary of changes for version 20120215: 1130 1131 11321) ACPICA Core Subsystem: 1133 1134There have been some major changes to the sleep/wake support code, as 1135described below (a - e). 1136 1137a) The AcpiLeaveSleepState has been split into two interfaces, similar to 1138AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 1139AcpiLeaveSleepStatePrep. This allows the host to perform actions between 1140the 1141time the _BFS method is called and the _WAK method is called. NOTE: all 1142hosts 1143must update their wake/resume code or else sleep/wake will not work 1144properly. 1145Rafael Wysocki. 1146 1147b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 1148_WAK 1149method. Some machines require that the GPEs are enabled before the _WAK 1150method 1151is executed. Thomas Renninger. 1152 1153c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) bit. 1154Some BIOS code assumes that WAK_STS will be cleared on resume and use it 1155to 1156determine whether the system is rebooting or resuming. Matthew Garrett. 1157 1158d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 1159Sleep) to 1160match the ACPI specification requirement. Rafael Wysocki. 1161 1162e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 1163registers within the V5 FADT. This support adds two new files: 1164hardware/hwesleep.c implements the support for the new registers. Moved 1165all 1166sleep/wake external interfaces to hardware/hwxfsleep.c. 1167 1168 1169Added a new OSL interface for ACPI table overrides, 1170AcpiOsPhysicalTableOverride. This interface allows the host to override a 1171table via a physical address, instead of the logical address required by 1172AcpiOsTableOverride. This simplifies the host implementation. Initial 1173implementation by Thomas Renninger. The ACPICA implementation creates a 1174single 1175shared function for table overrides that attempts both a logical and a 1176physical override. 1177 1178Expanded the OSL memory read/write interfaces to 64-bit data 1179(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 1180transfer support for GAS register structures passed to AcpiRead and 1181AcpiWrite. 1182 1183Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 1184custom 1185build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 1186model. 1187See the ACPICA reference for details. ACPICA BZ 942. This option removes 1188about 118910% of the code and 5% of the static data, and the following hardware ACPI 1190features become unavailable: 1191 PM Event and Control registers 1192 SCI interrupt (and handler) 1193 Fixed Events 1194 General Purpose Events (GPEs) 1195 Global Lock 1196 ACPI PM timer 1197 FACS table (Waking vectors and Global Lock) 1198 1199Updated the unix tarball directory structure to match the ACPICA git 1200source 1201tree. This ensures that the generic unix makefiles work properly (in 1202generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 867. 1203 1204Updated the return value of the _REV predefined method to integer value 5 1205to 1206reflect ACPI 5.0 support. 1207 1208Moved the external ACPI PM timer interface prototypes to the public 1209acpixf.h 1210file where they belong. 1211 1212Example Code and Data Size: These are the sizes for the OS-independent 1213acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1214debug 1215version of the code includes the debug output trace mechanism and has a 1216much 1217larger code and data size. 1218 1219 Previous Release: 1220 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 1221 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 1222 Current Release: 1223 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 1224 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 1225 1226 12272) iASL Compiler/Disassembler and Tools: 1228 1229Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 1230descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 1231incorrectly displayed. 1232 1233AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 1234specification. 1235 1236---------------------------------------- 123711 January 2012. Summary of changes for version 20120111: 1238 1239 12401) ACPICA Core Subsystem: 1241 1242Implemented a new mechanism to allow host device drivers to check for 1243address 1244range conflicts with ACPI Operation Regions. Both SystemMemory and 1245SystemIO 1246address spaces are supported. A new external interface, 1247AcpiCheckAddressRange, 1248allows drivers to check an address range against the ACPI namespace. See 1249the 1250ACPICA reference for additional details. Adds one new file, 1251utilities/utaddress.c. Lin Ming, Bob Moore. 1252 1253Fixed several issues with the ACPI 5.0 FADT support: Add the sleep Control 1254and 1255Status registers, update the ACPI 5.0 flags, and update internal data 1256structures to handle an FADT larger than 256 bytes. The size of the ACPI 12575.0 1258FADT is 268 bytes. 1259 1260Updated all ACPICA copyrights and signons to 2012. Added the 2012 1261copyright to 1262all module headers and signons, including the standard Linux header. This 1263affects virtually every file in the ACPICA core subsystem, iASL compiler, 1264and 1265all ACPICA utilities. 1266 1267Example Code and Data Size: These are the sizes for the OS-independent 1268acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1269debug 1270version of the code includes the debug output trace mechanism and has a 1271much 1272larger code and data size. 1273 1274 Previous Release: 1275 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 1276 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 1277 Current Release: 1278 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 1279 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 1280 1281 12822) iASL Compiler/Disassembler and Tools: 1283 1284Disassembler: fixed a problem with the automatic resource tag generation 1285support. Fixes a problem where the resource tags are inadvertently not 1286constructed if the table being disassembled contains external references 1287to 1288control methods. Moved the actual construction of the tags to after the 1289final 1290namespace is constructed (after 2nd parse is invoked due to external 1291control 1292method references.) ACPICA BZ 941. 1293 1294Table Compiler: Make all "generic" operators caseless. These are the 1295operators 1296like UINT8, String, etc. Making these caseless improves ease-of-use. 1297ACPICA BZ 1298934. 1299 1300---------------------------------------- 130123 November 2011. Summary of changes for version 20111123: 1302 13030) ACPI 5.0 Support: 1304 1305This release contains full support for the ACPI 5.0 specification, as 1306summarized below. 1307 1308Reduced Hardware Support: 1309------------------------- 1310 1311This support allows for ACPI systems without the usual ACPI hardware. This 1312support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 1313will 1314not attempt to initialize or use any of the usual ACPI hardware. Note, 1315when 1316this flag is set, all of the following ACPI hardware is assumed to be not 1317present and is not initialized or accessed: 1318 1319 General Purpose Events (GPEs) 1320 Fixed Events (PM1a/PM1b and PM Control) 1321 Power Management Timer and Console Buttons (power/sleep) 1322 Real-time Clock Alarm 1323 Global Lock 1324 System Control Interrupt (SCI) 1325 The FACS is assumed to be non-existent 1326 1327ACPI Tables: 1328------------ 1329 1330All new tables and updates to existing tables are fully supported in the 1331ACPICA headers (for use by device drivers), the disassembler, and the iASL 1332Data Table Compiler. ACPI 5.0 defines these new tables: 1333 1334 BGRT /* Boot Graphics Resource Table */ 1335 DRTM /* Dynamic Root of Trust for Measurement table */ 1336 FPDT /* Firmware Performance Data Table */ 1337 GTDT /* Generic Timer Description Table */ 1338 MPST /* Memory Power State Table */ 1339 PCCT /* Platform Communications Channel Table */ 1340 PMTT /* Platform Memory Topology Table */ 1341 RASF /* RAS Feature table */ 1342 1343Operation Regions/SpaceIDs: 1344--------------------------- 1345 1346All new operation regions are fully supported by the iASL compiler, the 1347disassembler, and the ACPICA runtime code (for dispatch to region 1348handlers.) 1349The new operation region Space IDs are: 1350 1351 GeneralPurposeIo 1352 GenericSerialBus 1353 1354Resource Descriptors: 1355--------------------- 1356 1357All new ASL resource descriptors are fully supported by the iASL compiler, 1358the 1359ASL/AML disassembler, and the ACPICA runtime Resource Manager code 1360(including 1361all new predefined resource tags). New descriptors are: 1362 1363 FixedDma 1364 GpioIo 1365 GpioInt 1366 I2cSerialBus 1367 SpiSerialBus 1368 UartSerialBus 1369 1370ASL/AML Operators, New and Modified: 1371------------------------------------ 1372 1373One new operator is added, the Connection operator, which is used to 1374associate 1375a GeneralPurposeIo or GenericSerialBus resource descriptor with individual 1376field objects within an operation region. Several new protocols are 1377associated 1378with the AccessAs operator. All are fully supported by the iASL compiler, 1379disassembler, and runtime ACPICA AML interpreter: 1380 1381 Connection // Declare Field Connection attributes 1382 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 1383 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol 1384 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 1385 RawDataBuffer // Data type for Vendor Data 1386fields 1387 1388Predefined ASL/AML Objects: 1389--------------------------- 1390 1391All new predefined objects/control-methods are supported by the iASL 1392compiler 1393and the ACPICA runtime validation/repair (arguments and return values.) 1394New 1395predefined names include the following: 1396 1397Standard Predefined Names (Objects or Control Methods): 1398 _AEI, _CLS, _CPC, _CWS, _DEP, 1399 _DLM, _EVT, _GCP, _CRT, _GWS, 1400 _HRV, _PRE, _PSE, _SRT, _SUB. 1401 1402Resource Tags (Names used to access individual fields within resource 1403descriptors): 1404 _DBT, _DPL, _DRS, _END, _FLC, 1405 _IOR, _LIN, _MOD, _PAR, _PHA, 1406 _PIN, _PPI, _POL, _RXL, _SLV, 1407 _SPE, _STB, _TXL, _VEN. 1408 1409ACPICA External Interfaces: 1410--------------------------- 1411 1412Several new interfaces have been defined for use by ACPI-related device 1413drivers and other host OS services: 1414 1415AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 1416to 1417acquire and release AML mutexes that are defined in the DSDT/SSDT tables 1418provided by the BIOS. They are intended to be used in conjunction with the 1419ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 1420mutual exclusion with the AML code/interpreter. 1421 1422AcpiGetEventResources: Returns the (formatted) resource descriptors as 1423defined 1424by the ACPI 5.0 _AEI object (ACPI Event Information). This object 1425provides 1426resource descriptors associated with hardware-reduced platform events, 1427similar 1428to the AcpiGetCurrentResources interface. 1429 1430Operation Region Handlers: For General Purpose IO and Generic Serial Bus 1431operation regions, information about the Connection() object and any 1432optional 1433length information is passed to the region handler within the Context 1434parameter. 1435 1436AcpiBufferToResource: This interface converts a raw AML buffer containing 1437a 1438resource template or resource descriptor to the ACPI_RESOURCE internal 1439format 1440suitable for use by device drivers. Can be used by an operation region 1441handler 1442to convert the Connection() buffer object into a ACPI_RESOURCE. 1443 1444Miscellaneous/Tools/TestSuites: 1445------------------------------- 1446 1447Support for extended _HID names (Four alpha characters instead of three). 1448Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 1449Support for ACPI 5.0 features in the ASLTS test suite. 1450Fully updated documentation (ACPICA and iASL reference documents.) 1451 1452ACPI Table Definition Language: 1453------------------------------- 1454 1455Support for this language was implemented and released as a subsystem of 1456the 1457iASL compiler in 2010. (See the iASL compiler User Guide.) 1458 1459 1460Non-ACPI 5.0 changes for this release: 1461-------------------------------------- 1462 14631) ACPICA Core Subsystem: 1464 1465Fix a problem with operation region declarations where a failure can occur 1466if 1467the region name and an argument that evaluates to an object (such as the 1468region address) are in different namespace scopes. Lin Ming, ACPICA BZ 1469937. 1470 1471Do not abort an ACPI table load if an invalid space ID is found within. 1472This 1473will be caught later if the offending method is executed. ACPICA BZ 925. 1474 1475Fixed an issue with the FFixedHW space ID where the ID was not always 1476recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 1477 1478Fixed a problem with the 32-bit generation of the unix-specific OSL 1479(osunixxf.c). Lin Ming, ACPICA BZ 936. 1480 1481Several changes made to enable generation with the GCC 4.6 compiler. 1482ACPICA BZ 1483935. 1484 1485New error messages: Unsupported I/O requests (not 8/16/32 bit), and 1486Index/Bank 1487field registers out-of-range. 1488 14892) iASL Compiler/Disassembler and Tools: 1490 1491iASL: Implemented the __PATH__ operator, which returns the full pathname 1492of 1493the current source file. 1494 1495AcpiHelp: Automatically display expanded keyword information for all ASL 1496operators. 1497 1498Debugger: Add "Template" command to disassemble/dump resource template 1499buffers. 1500 1501Added a new master script to generate and execute the ASLTS test suite. 1502Automatically handles 32- and 64-bit generation. See tests/aslts.sh 1503 1504iASL: Fix problem with listing generation during processing of the 1505Switch() 1506operator where AML listing was disabled until the entire Switch block was 1507completed. 1508 1509iASL: Improve support for semicolon statement terminators. Fix "invalid 1510character" message for some cases when the semicolon is used. Semicolons 1511are 1512now allowed after every <Term> grammar element. ACPICA BZ 927. 1513 1514iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 1515923. 1516 1517Disassembler: Fix problem with disassembly of the DataTableRegion operator 1518where an inadvertent "Unhandled deferred opcode" message could be 1519generated. 1520 15213) Example Code and Data Size 1522 1523These are the sizes for the OS-independent acpica.lib produced by the 1524Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 1525includes the debug output trace mechanism and has a much larger code and 1526data 1527size. 1528 1529 Previous Release: 1530 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 1531 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1532 Current Release: 1533 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 1534 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 1535 1536---------------------------------------- 153722 September 2011. Summary of changes for version 20110922: 1538 15390) ACPI 5.0 News: 1540 1541Support for ACPI 5.0 in ACPICA has been underway for several months and 1542will 1543be released at the same time that ACPI 5.0 is officially released. 1544 1545The ACPI 5.0 specification is on track for release in the next few months. 1546 15471) ACPICA Core Subsystem: 1548 1549Fixed a problem where the maximum sleep time for the Sleep() operator was 1550intended to be limited to two seconds, but was inadvertently limited to 20 1551seconds instead. 1552 1553Linux and Unix makefiles: Added header file dependencies to ensure correct 1554generation of ACPICA core code and utilities. Also simplified the 1555makefiles 1556considerably through the use of the vpath variable to specify search 1557paths. 1558ACPICA BZ 924. 1559 15602) iASL Compiler/Disassembler and Tools: 1561 1562iASL: Implemented support to check the access length for all fields 1563created to 1564access named Resource Descriptor fields. For example, if a resource field 1565is 1566defined to be two bits, a warning is issued if a CreateXxxxField() is used 1567with an incorrect bit length. This is implemented for all current resource 1568descriptor names. ACPICA BZ 930. 1569 1570Disassembler: Fixed a byte ordering problem with the output of 24-bit and 157156- 1572bit integers. 1573 1574iASL: Fixed a couple of issues associated with variable-length package 1575objects. 1) properly handle constants like One, Ones, Zero -- do not make 1576a 1577VAR_PACKAGE when these are used as a package length. 2) Allow the 1578VAR_PACKAGE 1579opcode (in addition to PACKAGE) when validating object types for 1580predefined 1581names. 1582 1583iASL: Emit statistics for all output files (instead of just the ASL input 1584and 1585AML output). Includes listings, hex files, etc. 1586 1587iASL: Added -G option to the table compiler to allow the compilation of 1588custom 1589ACPI tables. The only part of a table that is required is the standard 36- 1590byte 1591ACPI header. 1592 1593AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 1594headers), 1595which also adds correct 64-bit support. Also, now all output filenames are 1596completely lower case. 1597 1598AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 1599loading table files. A warning is issued for any such tables. The only 1600exception is an FADT. This also fixes a possible fault when attempting to 1601load 1602non-AML tables. ACPICA BZ 932. 1603 1604AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a 1605missing table terminator could cause a fault when using the -p option. 1606 1607AcpiSrc: Fixed a possible divide-by-zero fault when generating file 1608statistics. 1609 16103) Example Code and Data Size 1611 1612These are the sizes for the OS-independent acpica.lib produced by the 1613Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 1614includes the debug output trace mechanism and has a much larger code and 1615data 1616size. 1617 1618 Previous Release (VC 9.0): 1619 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 1620 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1621 Current Release (VC 9.0): 1622 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 1623 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1624 1625 1626---------------------------------------- 162723 June 2011. Summary of changes for version 20110623: 1628 16291) ACPI CA Core Subsystem: 1630 1631Updated the predefined name repair mechanism to not attempt repair of a 1632_TSS 1633return object if a _PSS object is present. We can only sort the _TSS 1634return 1635package if there is no _PSS within the same scope. This is because if _PSS 1636is 1637present, the ACPI specification dictates that the _TSS Power Dissipation 1638field 1639is to be ignored, and therefore some BIOSs leave garbage values in the 1640_TSS 1641Power field(s). In this case, it is best to just return the _TSS package 1642as- 1643is. Reported by, and fixed with assistance from Fenghua Yu. 1644 1645Added an option to globally disable the control method return value 1646validation 1647and repair. This runtime option can be used to disable return value repair 1648if 1649this is causing a problem on a particular machine. Also added an option to 1650AcpiExec (-dr) to set this disable flag. 1651 1652All makefiles and project files: Major changes to improve generation of 1653ACPICA 1654tools. ACPICA BZ 912: 1655 Reduce default optimization levels to improve compatibility 1656 For Linux, add strict-aliasing=0 for gcc 4 1657 Cleanup and simplify use of command line defines 1658 Cleanup multithread library support 1659 Improve usage messages 1660 1661Linux-specific header: update handling of THREAD_ID and pthread. For the 166232- 1663bit case, improve casting to eliminate possible warnings, especially with 1664the 1665acpica tools. 1666 1667Example Code and Data Size: These are the sizes for the OS-independent 1668acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1669debug 1670version of the code includes the debug output trace mechanism and has a 1671much 1672larger code and data size. 1673 1674 Previous Release (VC 9.0): 1675 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 1676 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1677 Current Release (VC 9.0): 1678 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 1679 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1680 16812) iASL Compiler/Disassembler and Tools: 1682 1683With this release, a new utility named "acpihelp" has been added to the 1684ACPICA 1685package. This utility summarizes the ACPI specification chapters for the 1686ASL 1687and AML languages. It generates under Linux/Unix as well as Windows, and 1688provides the following functionality: 1689 Find/display ASL operator(s) -- with description and syntax. 1690 Find/display ASL keyword(s) -- with exact spelling and descriptions. 1691 Find/display ACPI predefined name(s) -- with description, number 1692 of arguments, and the return value data type. 1693 Find/display AML opcode name(s) -- with opcode, arguments, and 1694grammar. 1695 Decode/display AML opcode -- with opcode name, arguments, and grammar. 1696 1697Service Layers: Make multi-thread support configurable. Conditionally 1698compile 1699the multi-thread support so that threading libraries will not be linked if 1700not 1701necessary. The only tool that requires multi-thread support is AcpiExec. 1702 1703iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 1704of 1705Bison appear to want the interface to yyerror to be a const char * (or at 1706least this is a problem when generating iASL on some systems.) ACPICA BZ 1707923 1708Pierre Lejeune. 1709 1710Tools: Fix for systems where O_BINARY is not defined. Only used for 1711Windows 1712versions of the tools. 1713 1714---------------------------------------- 171527 May 2011. Summary of changes for version 20110527: 1716 17171) ACPI CA Core Subsystem: 1718 1719ASL Load() operator: Reinstate most restrictions on the incoming ACPI 1720table 1721signature. Now, only allow SSDT, OEMx, and a null signature. History: 1722 1) Originally, we checked the table signature for "SSDT" or "PSDT". 1723 (PSDT is now obsolete.) 1724 2) We added support for OEMx tables, signature "OEM" plus a fourth 1725 "don't care" character. 1726 3) Valid tables were encountered with a null signature, so we just 1727 gave up on validating the signature, (05/2008). 1728 4) We encountered non-AML tables such as the MADT, which caused 1729 interpreter errors and kernel faults. So now, we once again allow 1730 only SSDT, OEMx, and now, also a null signature. (05/2011). 1731 1732Added the missing _TDL predefined name to the global name list in order to 1733enable validation. Affects both the core ACPICA code and the iASL 1734compiler. 1735 1736Example Code and Data Size: These are the sizes for the OS-independent 1737acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1738debug 1739version of the code includes the debug output trace mechanism and has a 1740much 1741larger code and data size. 1742 1743 Previous Release (VC 9.0): 1744 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 1745 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 1746 Current Release (VC 9.0): 1747 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 1748 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 1749 17502) iASL Compiler/Disassembler and Tools: 1751 1752Debugger/AcpiExec: Implemented support for "complex" method arguments on 1753the 1754debugger command line. This adds support beyond simple integers -- 1755including 1756Strings, Buffers, and Packages. Includes support for nested packages. 1757Increased the default command line buffer size to accommodate these 1758arguments. 1759See the ACPICA reference for details and syntax. ACPICA BZ 917. 1760 1761Debugger/AcpiExec: Implemented support for "default" method arguments for 1762the 1763Execute/Debug command. Now, the debugger will always invoke a control 1764method 1765with the required number of arguments -- even if the command line 1766specifies 1767none or insufficient arguments. It uses default integer values for any 1768missing 1769arguments. Also fixes a bug where only six method arguments maximum were 1770supported instead of the required seven. 1771 1772Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 1773and 1774also return status in order to prevent buffer overruns. See the ACPICA 1775reference for details and syntax. ACPICA BZ 921 1776 1777iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 1778makefiles to simplify support for the two different but similar parser 1779generators, bison and yacc. 1780 1781Updated the generic unix makefile for gcc 4. The default gcc version is 1782now 1783expected to be 4 or greater, since options specific to gcc 4 are used. 1784 1785---------------------------------------- 178613 April 2011. Summary of changes for version 20110413: 1787 17881) ACPI CA Core Subsystem: 1789 1790Implemented support to execute a so-called "orphan" _REG method under the 1791EC 1792device. This change will force the execution of a _REG method underneath 1793the 1794EC 1795device even if there is no corresponding operation region of type 1796EmbeddedControl. Fixes a problem seen on some machines and apparently is 1797compatible with Windows behavior. ACPICA BZ 875. 1798 1799Added more predefined methods that are eligible for automatic NULL package 1800element removal. This change adds another group of predefined names to the 1801list 1802of names that can be repaired by having NULL package elements dynamically 1803removed. This group are those methods that return a single variable-length 1804package containing simple data types such as integers, buffers, strings. 1805This 1806includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 1807_PSL, 1808_Sx, 1809and _TZD. ACPICA BZ 914. 1810 1811Split and segregated all internal global lock functions to a new file, 1812evglock.c. 1813 1814Updated internal address SpaceID for DataTable regions. Moved this 1815internal 1816space 1817id in preparation for ACPI 5.0 changes that will include some new space 1818IDs. 1819This 1820change should not affect user/host code. 1821 1822Example Code and Data Size: These are the sizes for the OS-independent 1823acpica.lib 1824produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 1825version of 1826the code includes the debug output trace mechanism and has a much larger 1827code 1828and 1829data size. 1830 1831 Previous Release (VC 9.0): 1832 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 1833 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 1834 Current Release (VC 9.0): 1835 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 1836 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 1837 18382) iASL Compiler/Disassembler and Tools: 1839 1840iASL/DTC: Major update for new grammar features. Allow generic data types 1841in 1842custom ACPI tables. Field names are now optional. Any line can be split to 1843multiple lines using the continuation char (\). Large buffers now use 1844line- 1845continuation character(s) and no colon on the continuation lines. See the 1846grammar 1847update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 1848Moore. 1849 1850iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 1851statements. 1852Since the parser stuffs a "zero" as the return value for these statements 1853(due 1854to 1855the underlying AML grammar), they were seen as "return with value" by the 1856iASL 1857semantic checking. They are now seen correctly as "null" return 1858statements. 1859 1860iASL: Check if a_REG declaration has a corresponding Operation Region. 1861Adds a 1862check for each _REG to ensure that there is in fact a corresponding 1863operation 1864region declaration in the same scope. If not, the _REG method is not very 1865useful 1866since it probably won't be executed. ACPICA BZ 915. 1867 1868iASL/DTC: Finish support for expression evaluation. Added a new expression 1869parser 1870that implements c-style operator precedence and parenthesization. ACPICA 1871bugzilla 1872908. 1873 1874Disassembler/DTC: Remove support for () and <> style comments in data 1875tables. 1876Now 1877that DTC has full expression support, we don't want to have comment 1878strings 1879that 1880start with a parentheses or a less-than symbol. Now, only the standard /* 1881and 1882// 1883comments are supported, as well as the bracket [] comments. 1884 1885AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 1886"unusual" 1887headers in the acpidump file. Update the header validation to support 1888these 1889tables. Problem introduced in previous AcpiXtract version in the change to 1890support "wrong checksum" error messages emitted by acpidump utility. 1891 1892iASL: Add a * option to generate all template files (as a synonym for ALL) 1893as 1894in 1895"iasl -T *" or "iasl -T ALL". 1896 1897iASL/DTC: Do not abort compiler on fatal errors. We do not want to 1898completely 1899abort the compiler on "fatal" errors, simply should abort the current 1900compile. 1901This allows multiple compiles with a single (possibly wildcard) compiler 1902invocation. 1903 1904---------------------------------------- 190516 March 2011. Summary of changes for version 20110316: 1906 19071) ACPI CA Core Subsystem: 1908 1909Fixed a problem caused by a _PRW method appearing at the namespace root 1910scope 1911during the setup of wake GPEs. A fault could occur if a _PRW directly 1912under 1913the 1914root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 1915 1916Implemented support for "spurious" Global Lock interrupts. On some 1917systems, a 1918global lock interrupt can occur without the pending flag being set. Upon a 1919GL 1920interrupt, we now ensure that a thread is actually waiting for the lock 1921before 1922signaling GL availability. Rafael Wysocki, Bob Moore. 1923 1924Example Code and Data Size: These are the sizes for the OS-independent 1925acpica.lib 1926produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 1927version of 1928the code includes the debug output trace mechanism and has a much larger 1929code 1930and 1931data size. 1932 1933 Previous Release (VC 9.0): 1934 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1935 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1936 Current Release (VC 9.0): 1937 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 1938 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 1939 19402) iASL Compiler/Disassembler and Tools: 1941 1942Implemented full support for the "SLIC" ACPI table. Includes support in 1943the 1944header files, disassembler, table compiler, and template generator. Bob 1945Moore, 1946Lin Ming. 1947 1948AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 1949Apparently some or all versions of acpidump will occasionally emit a 1950comment 1951like 1952"Wrong checksum", etc., into the dump file. This was causing problems for 1953AcpiXtract. ACPICA BZ 905. 1954 1955iASL: Fix the Linux makefile by removing an inadvertent double file 1956inclusion. 1957ACPICA BZ 913. 1958 1959AcpiExec: Update installation of operation region handlers. Install one 1960handler 1961for a user-defined address space. This is used by the ASL test suite 1962(ASLTS). 1963 1964---------------------------------------- 196511 February 2011. Summary of changes for version 20110211: 1966 19671) ACPI CA Core Subsystem: 1968 1969Added a mechanism to defer _REG methods for some early-installed handlers. 1970Most user handlers should be installed before call to AcpiEnableSubsystem. 1971However, Event handlers and region handlers should be installed after 1972AcpiInitializeObjects. Override handlers for the "default" regions should 1973be 1974installed early, however. This change executes all _REG methods for the 1975default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 1976chicken/egg issues between them. ACPICA BZ 848. 1977 1978Implemented an optimization for GPE detection. This optimization will 1979simply 1980ignore GPE registers that contain no enabled GPEs -- there is no need to 1981read the register since this information is available internally. This 1982becomes more important on machines with a large GPE space. ACPICA bugzilla 1983884. Lin Ming. Suggestion from Joe Liu. 1984 1985Removed all use of the highly unreliable FADT revision field. The revision 1986number in the FADT has been found to be completely unreliable and cannot 1987be 1988trusted. Only the actual table length can be used to infer the version. 1989This 1990change updates the ACPICA core and the disassembler so that both no longer 1991even look at the FADT version and instead depend solely upon the FADT 1992length. 1993 1994Fix an unresolved name issue for the no-debug and no-error-message source 1995generation cases. The _AcpiModuleName was left undefined in these cases, 1996but 1997it is actually needed as a parameter to some interfaces. Define 1998_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 1999 2000Split several large files (makefiles and project files updated) 2001 utglobal.c -> utdecode.c 2002 dbcomds.c -> dbmethod.c dbnames.c 2003 dsopcode.c -> dsargs.c dscontrol.c 2004 dsload.c -> dsload2.c 2005 aslanalyze.c -> aslbtypes.c aslwalks.c 2006 2007Example Code and Data Size: These are the sizes for the OS-independent 2008acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2009debug version of the code includes the debug output trace mechanism and 2010has 2011a much larger code and data size. 2012 2013 Previous Release (VC 9.0): 2014 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 2015 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 2016 Current Release (VC 9.0): 2017 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 2018 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 2019 20202) iASL Compiler/Disassembler and Tools: 2021 2022iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 2023These are useful C-style macros with the standard definitions. ACPICA 2024bugzilla 898. 2025 2026iASL/DTC: Added support for integer expressions and labels. Support for 2027full 2028expressions for all integer fields in all ACPI tables. Support for labels 2029in 2030"generic" portions of tables such as UEFI. See the iASL reference manual. 2031 2032Debugger: Added a command to display the status of global handlers. The 2033"handlers" command will display op region, fixed event, and miscellaneous 2034global handlers. installation status -- and for op regions, whether 2035default 2036or user-installed handler will be used. 2037 2038iASL: Warn if reserved method incorrectly returns a value. Many predefined 2039names are defined such that they do not return a value. If implemented as 2040a 2041method, issue a warning if such a name explicitly returns a value. ACPICA 2042Bugzilla 855. 2043 2044iASL: Added detection of GPE method name conflicts. Detects a conflict 2045where 2046there are two GPE methods of the form _Lxy and _Exy in the same scope. 2047(For 2048example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 2049 2050iASL/DTC: Fixed a couple input scanner issues with comments and line 2051numbers. Comment remover could get confused and miss a comment ending. 2052Fixed 2053a problem with line counter maintenance. 2054 2055iASL/DTC: Reduced the severity of some errors from fatal to error. There 2056is 2057no need to abort on simple errors within a field definition. 2058 2059Debugger: Simplified the output of the help command. All help output now 2060in 2061a single screen, instead of help subcommands. ACPICA Bugzilla 897. 2062 2063---------------------------------------- 206412 January 2011. Summary of changes for version 20110112: 2065 20661) ACPI CA Core Subsystem: 2067 2068Fixed a race condition between method execution and namespace walks that 2069can 2070possibly cause a fault. The problem was apparently introduced in version 207120100528 as a result of a performance optimization that reduces the number 2072of 2073namespace walks upon method exit by using the delete_namespace_subtree 2074function instead of the delete_namespace_by_owner function used 2075previously. 2076Bug is a missing namespace lock in the delete_namespace_subtree function. 2077dana.myers@oracle.com 2078 2079Fixed several issues and a possible fault with the automatic "serialized" 2080method support. History: This support changes a method to "serialized" on 2081the 2082fly if the method generates an AE_ALREADY_EXISTS error, indicating the 2083possibility that it cannot handle reentrancy. This fix repairs a couple of 2084issues seen in the field, especially on machines with many cores: 2085 2086 1) Delete method children only upon the exit of the last thread, 2087 so as to not delete objects out from under other running threads 2088 (and possibly causing a fault.) 2089 2) Set the "serialized" bit for the method only upon the exit of the 2090 Last thread, so as to not cause deadlock when running threads 2091 attempt to exit. 2092 3) Cleanup the use of the AML "MethodFlags" and internal method flags 2093 so that there is no longer any confusion between the two. 2094 2095 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 2096 2097Debugger: Now lock the namespace for duration of a namespace dump. 2098Prevents 2099issues if the namespace is changing dynamically underneath the debugger. 2100Especially affects temporary namespace nodes, since the debugger displays 2101these also. 2102 2103Updated the ordering of include files. The ACPICA headers should appear 2104before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 2105set 2106any necessary compiler-specific defines, etc. Affects the ACPI-related 2107tools 2108and utilities. 2109 2110Updated all ACPICA copyrights and signons to 2011. Added the 2011 2111copyright 2112to all module headers and signons, including the Linux header. This 2113affects 2114virtually every file in the ACPICA core subsystem, iASL compiler, and all 2115utilities. 2116 2117Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 2118project files for VC++ 6.0 are now obsolete. New project files can be 2119found 2120under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 2121details. 2122 2123Example Code and Data Size: These are the sizes for the OS-independent 2124acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2125debug version of the code includes the debug output trace mechanism and 2126has a 2127much larger code and data size. 2128 2129 Previous Release (VC 6.0): 2130 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 2131 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 2132 Current Release (VC 9.0): 2133 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 2134 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 2135 21362) iASL Compiler/Disassembler and Tools: 2137 2138iASL: Added generic data types to the Data Table compiler. Add "generic" 2139data 2140types such as UINT32, String, Unicode, etc., to simplify the generation of 2141platform-defined tables such as UEFI. Lin Ming. 2142 2143iASL: Added listing support for the Data Table Compiler. Adds listing 2144support 2145(-l) to display actual binary output for each line of input code. 2146 2147---------------------------------------- 214809 December 2010. Summary of changes for version 20101209: 2149 21501) ACPI CA Core Subsystem: 2151 2152Completed the major overhaul of the GPE support code that was begun in 2153July 21542010. Major features include: removal of _PRW execution in ACPICA (host 2155executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 2156changes to existing interfaces, simplification of GPE handler operation, 2157and 2158a handful of new interfaces: 2159 2160 AcpiUpdateAllGpes 2161 AcpiFinishGpe 2162 AcpiSetupGpeForWake 2163 AcpiSetGpeWakeMask 2164 One new file, evxfgpe.c to consolidate all external GPE interfaces. 2165 2166See the ACPICA Programmer Reference for full details and programming 2167information. See the new section 4.4 "General Purpose Event (GPE) Support" 2168for a full overview, and section 8.7 "ACPI General Purpose Event 2169Management" 2170for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 2171Bob Moore, Rafael Wysocki. 2172 2173Implemented a new GPE feature for Windows compatibility, the "Implicit 2174Wake 2175GPE Notify". This feature will automatically issue a Notify(2) on a device 2176when a Wake GPE is received if there is no corresponding GPE method or 2177handler. ACPICA BZ 870. 2178 2179Fixed a problem with the Scope() operator during table parse and load 2180phase. 2181During load phase (table load or method execution), the scope operator 2182should 2183not enter the target into the namespace. Instead, it should open a new 2184scope 2185at the target location. Linux BZ 19462, ACPICA BZ 882. 2186 2187Example Code and Data Size: These are the sizes for the OS-independent 2188acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2189debug version of the code includes the debug output trace mechanism and 2190has a 2191much larger code and data size. 2192 2193 Previous Release: 2194 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 2195 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 2196 Current Release: 2197 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 2198 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 2199 22002) iASL Compiler/Disassembler and Tools: 2201 2202iASL: Relax the alphanumeric restriction on _CID strings. These strings 2203are 2204"bus-specific" per the ACPI specification, and therefore any characters 2205are 2206acceptable. The only checks that can be performed are for a null string 2207and 2208perhaps for a leading asterisk. ACPICA BZ 886. 2209 2210iASL: Fixed a problem where a syntax error that caused a premature EOF 2211condition on the source file emitted a very confusing error message. The 2212premature EOF is now detected correctly. ACPICA BZ 891. 2213 2214Disassembler: Decode the AccessSize within a Generic Address Structure 2215(byte 2216access, word access, etc.) Note, this field does not allow arbitrary bit 2217access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 2218 2219New: AcpiNames utility - Example namespace dump utility. Shows an example 2220of 2221ACPICA configuration for a minimal namespace dump utility. Uses table and 2222namespace managers, but no AML interpreter. Does not add any functionality 2223over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 2224partition and configure ACPICA. ACPICA BZ 883. 2225 2226AML Debugger: Increased the debugger buffer size for method return 2227objects. 2228Was 4K, increased to 16K. Also enhanced error messages for debugger method 2229execution, including the buffer overflow case. 2230 2231---------------------------------------- 223213 October 2010. Summary of changes for version 20101013: 2233 22341) ACPI CA Core Subsystem: 2235 2236Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 2237now 2238clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 2239HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 2240 2241Changed the type of the predefined namespace object _TZ from ThermalZone 2242to 2243Device. This was found to be confusing to the host software that processes 2244the various thermal zones, since _TZ is not really a ThermalZone. However, 2245a 2246Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 2247Zhang. 2248 2249Added Windows Vista SP2 to the list of supported _OSI strings. The actual 2250string is "Windows 2006 SP2". 2251 2252Eliminated duplicate code in AcpiUtExecute* functions. Now that the 2253nsrepair 2254code automatically repairs _HID-related strings, this type of code is no 2255longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 2256 2257Example Code and Data Size: These are the sizes for the OS-independent 2258acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2259debug version of the code includes the debug output trace mechanism and 2260has a 2261much larger code and data size. 2262 2263 Previous Release: 2264 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 2265 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 2266 Current Release: 2267 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 2268 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 2269 22702) iASL Compiler/Disassembler and Tools: 2271 2272iASL: Implemented additional compile-time validation for _HID strings. The 2273non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length 2274of 2275the string must be exactly seven or eight characters. For both _HID and 2276_CID 2277strings, all characters must be alphanumeric. ACPICA BZ 874. 2278 2279iASL: Allow certain "null" resource descriptors. Some BIOS code creates 2280descriptors that are mostly or all zeros, with the expectation that they 2281will 2282be filled in at runtime. iASL now allows this as long as there is a 2283"resource 2284tag" (name) associated with the descriptor, which gives the ASL a handle 2285needed to modify the descriptor. ACPICA BZ 873. 2286 2287Added single-thread support to the generic Unix application OSL. Primarily 2288for iASL support, this change removes the use of semaphores in the single- 2289threaded ACPICA tools/applications - increasing performance. The 2290_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 2291option. ACPICA BZ 879. 2292 2293AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 2294support 2295for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 2296 2297iASL: Moved all compiler messages to a new file, aslmessages.h. 2298 2299---------------------------------------- 230015 September 2010. Summary of changes for version 20100915: 2301 23021) ACPI CA Core Subsystem: 2303 2304Removed the AcpiOsDerivePciId OSL interface. The various host 2305implementations 2306of this function were not OS-dependent and are now obsolete and can be 2307removed from all host OSLs. This function has been replaced by 2308AcpiHwDerivePciId, which is now part of the ACPICA core code. 2309AcpiHwDerivePciId has been implemented without recursion. Adds one new 2310module, hwpci.c. ACPICA BZ 857. 2311 2312Implemented a dynamic repair for _HID and _CID strings. The following 2313problems are now repaired at runtime: 1) Remove a leading asterisk in the 2314string, and 2) the entire string is uppercased. Both repairs are in 2315accordance with the ACPI specification and will simplify host driver code. 2316ACPICA BZ 871. 2317 2318The ACPI_THREAD_ID type is no longer configurable, internally it is now 2319always UINT64. This simplifies the ACPICA code, especially any printf 2320output. 2321UINT64 is the only common data type for all thread_id types across all 2322operating systems. It is now up to the host OSL to cast the native 2323thread_id 2324type to UINT64 before returning the value to ACPICA (via 2325AcpiOsGetThreadId). 2326Lin Ming, Bob Moore. 2327 2328Added the ACPI_INLINE type to enhance the ACPICA configuration. The 2329"inline" 2330keyword is not standard across compilers, and this type allows inline to 2331be 2332configured on a per-compiler basis. Lin Ming. 2333 2334Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 2335Added an extern for this boolean in acpixf.h. Some hosts utilize this 2336value 2337during suspend/restore operations. ACPICA BZ 869. 2338 2339All code that implements error/warning messages with the "ACPI:" prefix 2340has 2341been moved to a new module, utxferror.c. 2342 2343The UINT64_OVERLAY was moved to utmath.c, which is the only module where 2344it 2345is used. ACPICA BZ 829. Lin Ming, Bob Moore. 2346 2347Example Code and Data Size: These are the sizes for the OS-independent 2348acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2349debug version of the code includes the debug output trace mechanism and 2350has a 2351much larger code and data size. 2352 2353 Previous Release: 2354 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 2355 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 2356 Current Release: 2357 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 2358 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 2359 23602) iASL Compiler/Disassembler and Tools: 2361 2362iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 2363This keeps the output files free of random error messages that may 2364originate 2365from within the namespace/interpreter code. Used this opportunity to merge 2366all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 2367866. Lin Ming, Bob Moore. 2368 2369Tools: update some printfs for ansi warnings on size_t. Handle width 2370change 2371of size_t on 32-bit versus 64-bit generations. Lin Ming. 2372 2373---------------------------------------- 237406 August 2010. Summary of changes for version 20100806: 2375 23761) ACPI CA Core Subsystem: 2377 2378Designed and implemented a new host interface to the _OSI support code. 2379This 2380will allow the host to dynamically add or remove multiple _OSI strings, as 2381well as install an optional handler that is called for each _OSI 2382invocation. 2383Also added a new AML debugger command, 'osi' to display and modify the 2384global 2385_OSI string table, and test support in the AcpiExec utility. See the 2386ACPICA 2387reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 2388New Functions: 2389 AcpiInstallInterface - Add an _OSI string. 2390 AcpiRemoveInterface - Delete an _OSI string. 2391 AcpiInstallInterfaceHandler - Install optional _OSI handler. 2392Obsolete Functions: 2393 AcpiOsValidateInterface - no longer used. 2394New Files: 2395 source/components/utilities/utosi.c 2396 2397Re-introduced the support to enable multi-byte transfers for Embedded 2398Controller (EC) operation regions. A reported problem was found to be a 2399bug 2400in the host OS, not in the multi-byte support. Previously, the maximum 2401data 2402size passed to the EC operation region handler was a single byte. There 2403are 2404often EC Fields larger than one byte that need to be transferred, and it 2405is 2406useful for the EC driver to lock these as a single transaction. This 2407change 2408enables single transfers larger than 8 bits. This effectively changes the 2409access to the EC space from ByteAcc to AnyAcc, and will probably require 2410changes to the host OS Embedded Controller driver to enable 16/32/64/256- 2411bit 2412transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 2413 2414Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 2415prototype in acpiosxf.h had the output value pointer as a (void *). 2416It should be a (UINT64 *). This may affect some host OSL code. 2417 2418Fixed a couple problems with the recently modified Linux makefiles for 2419iASL 2420and AcpiExec. These new makefiles place the generated object files in the 2421local directory so that there can be no collisions between the files that 2422are 2423shared between them that are compiled with different options. 2424 2425Example Code and Data Size: These are the sizes for the OS-independent 2426acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2427debug version of the code includes the debug output trace mechanism and 2428has a 2429much larger code and data size. 2430 2431 Previous Release: 2432 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 2433 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 2434 Current Release: 2435 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 2436 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 2437 24382) iASL Compiler/Disassembler and Tools: 2439 2440iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 2441namespace from and disassemble an entire group of AML files. Useful for 2442loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 2443and 2444disassembling with one simple command. ACPICA BZ 865. Lin Ming. 2445 2446iASL: Allow multiple invocations of -e option. This change allows multiple 2447uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 2448834. 2449Lin Ming. 2450 2451---------------------------------------- 245202 July 2010. Summary of changes for version 20100702: 2453 24541) ACPI CA Core Subsystem: 2455 2456Implemented several updates to the recently added GPE reference count 2457support. The model for "wake" GPEs is changing to give the host OS 2458complete 2459control of these GPEs. Eventually, the ACPICA core will not execute any 2460_PRW 2461methods, since the host already must execute them. Also, additional 2462changes 2463were made to help ensure that the reference counts are kept in proper 2464synchronization with reality. Rafael J. Wysocki. 2465 24661) Ensure that GPEs are not enabled twice during initialization. 24672) Ensure that GPE enable masks stay in sync with the reference count. 24683) Do not inadvertently enable GPEs when writing GPE registers. 24694) Remove the internal wake reference counter and add new AcpiGpeWakeup 2470interface. This interface will set or clear individual GPEs for wakeup. 24715) Remove GpeType argument from AcpiEnable and AcpiDisable. These 2472interfaces 2473are now used for "runtime" GPEs only. 2474 2475Changed the behavior of the GPE install/remove handler interfaces. The GPE 2476is 2477no longer disabled during this process, as it was found to cause problems 2478on 2479some machines. Rafael J. Wysocki. 2480 2481Reverted a change introduced in version 20100528 to enable Embedded 2482Controller multi-byte transfers. This change was found to cause problems 2483with 2484Index Fields and possibly Bank Fields. It will be reintroduced when these 2485problems have been resolved. 2486 2487Fixed a problem with references to Alias objects within Package Objects. A 2488reference to an Alias within the definition of a Package was not always 2489resolved properly. Aliases to objects like Processors, Thermal zones, etc. 2490were resolved to the actual object instead of a reference to the object as 2491it 2492should be. Package objects are only allowed to contain integer, string, 2493buffer, package, and reference objects. Redhat bugzilla 608648. 2494 2495Example Code and Data Size: These are the sizes for the OS-independent 2496acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2497debug version of the code includes the debug output trace mechanism and 2498has a 2499much larger code and data size. 2500 2501 Previous Release: 2502 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 2503 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 2504 Current Release: 2505 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 2506 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 2507 25082) iASL Compiler/Disassembler and Tools: 2509 2510iASL: Implemented a new compiler subsystem to allow definition and 2511compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 2512These 2513are called "ACPI Data Tables", and the new compiler is the "Data Table 2514Compiler". This compiler is intended to simplify the existing error-prone 2515process of creating these tables for the BIOS, as well as allowing the 2516disassembly, modification, recompilation, and override of existing ACPI 2517data 2518tables. See the iASL User Guide for detailed information. 2519 2520iASL: Implemented a new Template Generator option in support of the new 2521Data 2522Table Compiler. This option will create examples of all known ACPI tables 2523that can be used as the basis for table development. See the iASL 2524documentation and the -T option. 2525 2526Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 2527Descriptor Table). 2528 2529Updated the Linux makefiles for iASL and AcpiExec to place the generated 2530object files in the local directory so that there can be no collisions 2531between the shared files between them that are generated with different 2532options. 2533 2534Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 2535the #define __APPLE__ to enable this support. 2536 2537---------------------------------------- 253828 May 2010. Summary of changes for version 20100528: 2539 2540Note: The ACPI 4.0a specification was released on April 5, 2010 and is 2541available at www.acpi.info. This is primarily an errata release. 2542 25431) ACPI CA Core Subsystem: 2544 2545Undefined ACPI tables: We are looking for the definitions for the 2546following 2547ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 2548 2549Implemented support to enable multi-byte transfers for Embedded Controller 2550(EC) operation regions. Previously, the maximum data size passed to the EC 2551operation region handler was a single byte. There are often EC Fields 2552larger 2553than one byte that need to be transferred, and it is useful for the EC 2554driver 2555to lock these as a single transaction. This change enables single 2556transfers 2557larger than 8 bits. This effectively changes the access to the EC space 2558from 2559ByteAcc to AnyAcc, and will probably require changes to the host OS 2560Embedded 2561Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 2562bit 2563transfers. Alexey Starikovskiy, Lin Ming 2564 2565Implemented a performance enhancement for namespace search and access. 2566This 2567change enhances the performance of namespace searches and walks by adding 2568a 2569backpointer to the parent in each namespace node. On large namespaces, 2570this 2571change can improve overall ACPI performance by up to 9X. Adding a pointer 2572to 2573each namespace node increases the overall size of the internal namespace 2574by 2575about 5%, since each namespace entry usually consists of both a namespace 2576node and an ACPI operand object. However, this is the first growth of the 2577namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 2578 2579Implemented a performance optimization that reduces the number of 2580namespace 2581walks. On control method exit, only walk the namespace if the method is 2582known 2583to have created namespace objects outside of its local scope. Previously, 2584the 2585entire namespace was traversed on each control method exit. This change 2586can 2587improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 2588Moore. 2589 2590Added support to truncate I/O addresses to 16 bits for Windows 2591compatibility. 2592Some ASL code has been seen in the field that inadvertently has bits set 2593above bit 15. This feature is optional and is enabled if the BIOS requests 2594any Windows OSI strings. It can also be enabled by the host OS. Matthew 2595Garrett, Bob Moore. 2596 2597Added support to limit the maximum time for the ASL Sleep() operator. To 2598prevent accidental deep sleeps, limit the maximum time that Sleep() will 2599actually sleep. Configurable, the default maximum is two seconds. ACPICA 2600bugzilla 854. 2601 2602Added run-time validation support for the _WDG and_WED Microsoft 2603predefined 2604methods. These objects are defined by "Windows Instrumentation", and are 2605not 2606part of the ACPI spec. ACPICA BZ 860. 2607 2608Expanded all statistic counters used during namespace and device 2609initialization from 16 to 32 bits in order to support very large 2610namespaces. 2611 2612Replaced all instances of %d in printf format specifiers with %u since 2613nearly 2614all integers in ACPICA are unsigned. 2615 2616Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 2617returned 2618as AE_NO_HANDLER. 2619 2620Example Code and Data Size: These are the sizes for the OS-independent 2621acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2622debug version of the code includes the debug output trace mechanism and 2623has a 2624much larger code and data size. 2625 2626 Previous Release: 2627 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 2628 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 2629 Current Release: 2630 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 2631 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 2632 26332) iASL Compiler/Disassembler and Tools: 2634 2635iASL: Added compiler support for the _WDG and_WED Microsoft predefined 2636methods. These objects are defined by "Windows Instrumentation", and are 2637not 2638part of the ACPI spec. ACPICA BZ 860. 2639 2640AcpiExec: added option to disable the memory tracking mechanism. The -dt 2641option will disable the tracking mechanism, which improves performance 2642considerably. 2643 2644AcpiExec: Restructured the command line options into -d (disable) and -e 2645(enable) options. 2646 2647---------------------------------------- 264828 April 2010. Summary of changes for version 20100428: 2649 26501) ACPI CA Core Subsystem: 2651 2652Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 2653including FADT-based and GPE Block Devices, execute any _PRW methods in 2654the 2655new table, and process any _Lxx/_Exx GPE methods in the new table. Any 2656runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 2657immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 2658Devices. Provides compatibility with other ACPI implementations. Two new 2659files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 2660Moore. 2661 2662Fixed a regression introduced in version 20100331 within the table manager 2663where initial table loading could fail. This was introduced in the fix for 2664AcpiReallocateRootTable. Also, renamed some of fields in the table manager 2665data structures to clarify their meaning and use. 2666 2667Fixed a possible allocation overrun during internal object copy in 2668AcpiUtCopySimpleObject. The original code did not correctly handle the 2669case 2670where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 2671847. 2672 2673Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 2674possible access beyond end-of-allocation. Also, now fully validate 2675descriptor 2676(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 2677 2678Example Code and Data Size: These are the sizes for the OS-independent 2679acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2680debug version of the code includes the debug output trace mechanism and 2681has a 2682much larger code and data size. 2683 2684 Previous Release: 2685 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 2686 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 2687 Current Release: 2688 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 2689 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 2690 26912) iASL Compiler/Disassembler and Tools: 2692 2693iASL: Implemented Min/Max/Len/Gran validation for address resource 2694descriptors. This change implements validation for the address fields that 2695are common to all address-type resource descriptors. These checks are 2696implemented: Checks for valid Min/Max, length within the Min/Max window, 2697valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 2698table 6-40 in the ACPI 4.0a specification. Also split the large 2699aslrestype1.c 2700and aslrestype2.c files into five new files. ACPICA BZ 840. 2701 2702iASL: Added support for the _Wxx predefined names. This support was 2703missing 2704and these names were not recognized by the compiler as valid predefined 2705names. ACPICA BZ 851. 2706 2707iASL: Added an error for all predefined names that are defined to return 2708no 2709value and thus must be implemented as Control Methods. These include all 2710of 2711the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 2712names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 2713 2714iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 2715ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 2716be 2717dynamically loaded via the Load() operator. Also cleaned up output for the 2718- 2719ta and -tc options. ACPICA BZ 853. 2720 2721Tests: Added a new file with examples of extended iASL error checking. 2722Demonstrates the advanced error checking ability of the iASL compiler. 2723Available at tests/misc/badcode.asl. 2724 2725---------------------------------------- 272631 March 2010. Summary of changes for version 20100331: 2727 27281) ACPI CA Core Subsystem: 2729 2730Completed a major update for the GPE support in order to improve support 2731for 2732shared GPEs and to simplify both host OS and ACPICA code. Added a 2733reference 2734count mechanism to support shared GPEs that require multiple device 2735drivers. 2736Several external interfaces have changed. One external interface has been 2737removed. One new external interface was added. Most of the GPE external 2738interfaces now use the GPE spinlock instead of the events mutex (and the 2739Flags parameter for many GPE interfaces has been removed.) See the updated 2740ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 2741Rafael 2742Wysocki. ACPICA BZ 831. 2743 2744Changed: 2745 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 2746Removed: 2747 AcpiSetGpeType 2748New: 2749 AcpiSetGpe 2750 2751Implemented write support for DataTable operation regions. These regions 2752are 2753defined via the DataTableRegion() operator. Previously, only read support 2754was 2755implemented. The ACPI specification allows DataTableRegions to be 2756read/write, 2757however. 2758 2759Implemented a new subsystem option to force a copy of the DSDT to local 2760memory. Optionally copy the entire DSDT to local memory (instead of simply 2761mapping it.) There are some (albeit very rare) BIOSs that corrupt or 2762replace 2763the original DSDT, creating the need for this option. Default is FALSE, do 2764not copy the DSDT. 2765 2766Implemented detection of a corrupted or replaced DSDT. This change adds 2767support to detect a DSDT that has been corrupted and/or replaced from 2768outside 2769the OS (by firmware). This is typically catastrophic for the system, but 2770has 2771been seen on some machines. Once this problem has been detected, the DSDT 2772copy option can be enabled via system configuration. Lin Ming, Bob Moore. 2773 2774Fixed two problems with AcpiReallocateRootTable during the root table 2775copy. 2776When copying the root table to the new allocation, the length used was 2777incorrect. The new size was used instead of the current table size, 2778meaning 2779too much data was copied. Also, the count of available slots for ACPI 2780tables 2781was not set correctly. Alexey Starikovskiy, Bob Moore. 2782 2783Example Code and Data Size: These are the sizes for the OS-independent 2784acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2785debug version of the code includes the debug output trace mechanism and 2786has a 2787much larger code and data size. 2788 2789 Previous Release: 2790 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 2791 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 2792 Current Release: 2793 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 2794 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 2795 27962) iASL Compiler/Disassembler and Tools: 2797 2798iASL: Implement limited typechecking for values returned from predefined 2799control methods. The type of any returned static (unnamed) object is now 2800validated. For example, Return(1). ACPICA BZ 786. 2801 2802iASL: Fixed a predefined name object verification regression. Fixes a 2803problem 2804introduced in version 20100304. An error is incorrectly generated if a 2805predefined name is declared as a static named object with a value defined 2806using the keywords "Zero", "One", or "Ones". Lin Ming. 2807 2808iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 2809reducing the requested registry access rights. ACPICA BZ 842. 2810 2811Disassembler: fixed a possible fault when generating External() 2812statements. 2813Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 2814(carat). Fixes a string length allocation calculation. Lin Ming. 2815 2816---------------------------------------- 281704 March 2010. Summary of changes for version 20100304: 2818 28191) ACPI CA Core Subsystem: 2820 2821Fixed a possible problem with the AML Mutex handling function 2822AcpiExReleaseMutex where the function could fault under the very rare 2823condition when the interpreter has blocked, the interpreter lock is 2824released, 2825the interpreter is then reentered via the same thread, and attempts to 2826acquire an AML mutex that was previously acquired. FreeBSD report 140979. 2827Lin 2828Ming. 2829 2830Implemented additional configuration support for the AML "Debug Object". 2831Output from the debug object can now be enabled via a global variable, 2832AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 2833debugging. 2834This debug output is now available in the release version of ACPICA 2835instead 2836of just the debug version. Also, the entire debug output module can now be 2837configured out of the ACPICA build if desired. One new file added, 2838executer/exdebug.c. Lin Ming, Bob Moore. 2839 2840Added header support for the ACPI MCHI table (Management Controller Host 2841Interface Table). This table was added in ACPI 4.0, but the defining 2842document 2843has only recently become available. 2844 2845Standardized output of integer values for ACPICA warnings/errors. Always 2846use 28470x prefix for hex output, always use %u for unsigned integer decimal 2848output. 2849Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 2850invocations.) These invocations were converted from the original 2851ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 2852 2853Example Code and Data Size: These are the sizes for the OS-independent 2854acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2855debug version of the code includes the debug output trace mechanism and 2856has a 2857much larger code and data size. 2858 2859 Previous Release: 2860 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 2861 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 2862 Current Release: 2863 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 2864 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 2865 28662) iASL Compiler/Disassembler and Tools: 2867 2868iASL: Implemented typechecking support for static (non-control method) 2869predefined named objects that are declared with the Name() operator. For 2870example, the type of this object is now validated to be of type Integer: 2871Name(_BBN, 1). This change migrates the compiler to using the core 2872predefined 2873name table instead of maintaining a local version. Added a new file, 2874aslpredef.c. ACPICA BZ 832. 2875 2876Disassembler: Added support for the ACPI 4.0 MCHI table. 2877 2878---------------------------------------- 287921 January 2010. Summary of changes for version 20100121: 2880 28811) ACPI CA Core Subsystem: 2882 2883Added the 2010 copyright to all module headers and signons. This affects 2884virtually every file in the ACPICA core subsystem, the iASL compiler, the 2885tools/utilities, and the test suites. 2886 2887Implemented a change to the AcpiGetDevices interface to eliminate 2888unnecessary 2889invocations of the _STA method. In the case where a specific _HID is 2890requested, do not run _STA until a _HID match is found. This eliminates 2891potentially dozens of _STA calls during a search for a particular 2892device/HID, 2893which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 2894 2895Implemented an additional repair for predefined method return values. 2896Attempt 2897to repair unexpected NULL elements within returned Package objects. Create 2898an 2899Integer of value zero, a NULL String, or a zero-length Buffer as 2900appropriate. 2901ACPICA BZ 818. Lin Ming, Bob Moore. 2902 2903Removed the obsolete ACPI_INTEGER data type. This type was introduced as 2904the 2905code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 2906(with 290764-bit AML integers). It is now obsolete and this change removes it from 2908the 2909ACPICA code base, replaced by UINT64. The original typedef has been 2910retained 2911for now for compatibility with existing device driver code. ACPICA BZ 824. 2912 2913Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 2914the parse tree object. 2915 2916Added additional warning options for the gcc-4 generation. Updated the 2917source 2918accordingly. This includes some code restructuring to eliminate 2919unreachable 2920code, elimination of some gotos, elimination of unused return values, some 2921additional casting, and removal of redundant declarations. 2922 2923Example Code and Data Size: These are the sizes for the OS-independent 2924acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2925debug version of the code includes the debug output trace mechanism and 2926has a 2927much larger code and data size. 2928 2929 Previous Release: 2930 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 2931 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 2932 Current Release: 2933 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 2934 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 2935 29362) iASL Compiler/Disassembler and Tools: 2937 2938No functional changes for this release. 2939 2940---------------------------------------- 294114 December 2009. Summary of changes for version 20091214: 2942 29431) ACPI CA Core Subsystem: 2944 2945Enhanced automatic data type conversions for predefined name repairs. This 2946change expands the automatic repairs/conversions for predefined name 2947return 2948values to make Integers, Strings, and Buffers fully interchangeable. Also, 2949a 2950Buffer can be converted to a Package of Integers if necessary. The 2951nsrepair.c 2952module was completely restructured. Lin Ming, Bob Moore. 2953 2954Implemented automatic removal of null package elements during predefined 2955name 2956repairs. This change will automatically remove embedded and trailing NULL 2957package elements from returned package objects that are defined to contain 2958a 2959variable number of sub-packages. The driver is then presented with a 2960package 2961with no null elements to deal with. ACPICA BZ 819. 2962 2963Implemented a repair for the predefined _FDE and _GTM names. The expected 2964return value for both names is a Buffer of 5 DWORDs. This repair fixes two 2965possible problems (both seen in the field), where a package of integers is 2966returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 2967Kim. 2968 2969Implemented additional module-level code support. This change will 2970properly 2971execute module-level code that is not at the root of the namespace (under 2972a 2973Device object, etc.). Now executes the code within the current scope 2974instead 2975of the root. ACPICA BZ 762. Lin Ming. 2976 2977Fixed possible mutex acquisition errors when running _REG methods. Fixes a 2978problem where mutex errors can occur when running a _REG method that is in 2979the same scope as a method-defined operation region or an operation region 2980under a module-level IF block. This type of code is rare, so the problem 2981has 2982not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 2983 2984Fixed a possible memory leak during module-level code execution. An object 2985could be leaked for each block of executed module-level code if the 2986interpreter slack mode is enabled This change deletes any implicitly 2987returned 2988object from the module-level code block. Lin Ming. 2989 2990Removed messages for successful predefined repair(s). The repair mechanism 2991was considered too wordy. Now, messages are only unconditionally emitted 2992if 2993the return object cannot be repaired. Existing messages for successful 2994repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 2995827. 2996 2997Example Code and Data Size: These are the sizes for the OS-independent 2998acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2999debug version of the code includes the debug output trace mechanism and 3000has a 3001much larger code and data size. 3002 3003 Previous Release: 3004 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 3005 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 3006 Current Release: 3007 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 3008 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 3009 30102) iASL Compiler/Disassembler and Tools: 3011 3012iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 3013files 3014were no longer automatically removed at the termination of the compile. 3015 3016acpiexec: Implemented the -f option to specify default region fill value. 3017This option specifies the value used to initialize buffers that simulate 3018operation regions. Default value is zero. Useful for debugging problems 3019that 3020depend on a specific initial value for a region or field. 3021 3022---------------------------------------- 302312 November 2009. Summary of changes for version 20091112: 3024 30251) ACPI CA Core Subsystem: 3026 3027Implemented a post-order callback to AcpiWalkNamespace. The existing 3028interface only has a pre-order callback. This change adds an additional 3029parameter for a post-order callback which will be more useful for bus 3030scans. 3031ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 3032 3033Modified the behavior of the operation region memory mapping cache for 3034SystemMemory. Ensure that the memory mappings created for operation 3035regions 3036do not cross 4K page boundaries. Crossing a page boundary while mapping 3037regions can cause kernel warnings on some hosts if the pages have 3038different 3039attributes. Such regions are probably BIOS bugs, and this is the 3040workaround. 3041Linux BZ 14445. Lin Ming. 3042 3043Implemented an automatic repair for predefined methods that must return 3044sorted lists. This change will repair (by sorting) packages returned by 3045_ALR, 3046_PSS, and _TSS. Drivers can now assume that the packages are correctly 3047sorted 3048and do not contain NULL package elements. Adds one new file, 3049namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 3050 3051Fixed a possible fault during predefined name validation if a return 3052Package 3053object contains NULL elements. Also adds a warning if a NULL element is 3054followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 3055may 3056include repair or removal of all such NULL elements where possible. 3057 3058Implemented additional module-level executable AML code support. This 3059change 3060will execute module-level code that is not at the root of the namespace 3061(under a Device object, etc.) at table load time. Module-level executable 3062AML 3063code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 3064 3065Implemented a new internal function to create Integer objects. This 3066function 3067simplifies miscellaneous object creation code. ACPICA BZ 823. 3068 3069Reduced the severity of predefined repair messages, Warning to Info. Since 3070the object was successfully repaired, a warning is too severe. Reduced to 3071an 3072info message for now. These messages may eventually be changed to debug- 3073only. 3074ACPICA BZ 812. 3075 3076Example Code and Data Size: These are the sizes for the OS-independent 3077acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3078debug version of the code includes the debug output trace mechanism and 3079has a 3080much larger code and data size. 3081 3082 Previous Release: 3083 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 3084 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 3085 Current Release: 3086 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 3087 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 3088 30892) iASL Compiler/Disassembler and Tools: 3090 3091iASL: Implemented Switch() with While(1) so that Break works correctly. 3092This 3093change correctly implements the Switch operator with a surrounding 3094While(1) 3095so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 3096 3097iASL: Added a message if a package initializer list is shorter than 3098package 3099length. Adds a new remark for a Package() declaration if an initializer 3100list 3101exists, but is shorter than the declared length of the package. Although 3102technically legal, this is probably a coding error and it is seen in the 3103field. ACPICA BZ 815. Lin Ming, Bob Moore. 3104 3105iASL: Fixed a problem where the compiler could fault after the maximum 3106number 3107of errors was reached (200). 3108 3109acpixtract: Fixed a possible warning for pointer cast if the compiler 3110warning 3111level set very high. 3112 3113---------------------------------------- 311413 October 2009. Summary of changes for version 20091013: 3115 31161) ACPI CA Core Subsystem: 3117 3118Fixed a problem where an Operation Region _REG method could be executed 3119more 3120than once. If a custom address space handler is installed by the host 3121before 3122the "initialize operation regions" phase of the ACPICA initialization, any 3123_REG methods for that address space could be executed twice. This change 3124fixes the problem. ACPICA BZ 427. Lin Ming. 3125 3126Fixed a possible memory leak for the Scope() ASL operator. When the exact 3127invocation of "Scope(\)" is executed (change scope to root), one internal 3128operand object was leaked. Lin Ming. 3129 3130Implemented a run-time repair for the _MAT predefined method. If the _MAT 3131return value is defined as a Field object in the AML, and the field 3132size is less than or equal to the default width of an integer (32 or 313364),_MAT 3134can incorrectly return an Integer instead of a Buffer. ACPICA now 3135automatically repairs this problem. ACPICA BZ 810. 3136 3137Implemented a run-time repair for the _BIF and _BIX predefined methods. 3138The 3139"OEM Information" field is often incorrectly returned as an Integer with 3140value zero if the field is not supported by the platform. This is due to 3141an 3142ambiguity in the ACPI specification. The field should always be a string. 3143ACPICA now automatically repairs this problem by returning a NULL string 3144within the returned Package. ACPICA BZ 807. 3145 3146Example Code and Data Size: These are the sizes for the OS-independent 3147acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3148debug version of the code includes the debug output trace mechanism and 3149has a 3150much larger code and data size. 3151 3152 Previous Release: 3153 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 3154 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 3155 Current Release: 3156 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 3157 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 3158 31592) iASL Compiler/Disassembler and Tools: 3160 3161Disassembler: Fixed a problem where references to external symbols that 3162contained one or more parent-prefixes (carats) were not handled correctly, 3163possibly causing a fault. ACPICA BZ 806. Lin Ming. 3164 3165Disassembler: Restructured the code so that all functions that handle 3166external symbols are in a single module. One new file is added, 3167common/dmextern.c. 3168 3169AML Debugger: Added a max count argument for the Batch command (which 3170executes multiple predefined methods within the namespace.) 3171 3172iASL: Updated the compiler documentation (User Reference.) Available at 3173http://www.acpica.org/documentation/. ACPICA BZ 750. 3174 3175AcpiXtract: Updated for Lint and other formatting changes. Close all open 3176files. 3177 3178---------------------------------------- 317903 September 2009. Summary of changes for version 20090903: 3180 31811) ACPI CA Core Subsystem: 3182 3183For Windows Vista compatibility, added the automatic execution of an _INI 3184method located at the namespace root (\_INI). This method is executed at 3185table load time. This support is in addition to the automatic execution of 3186\_SB._INI. Lin Ming. 3187 3188Fixed a possible memory leak in the interpreter for AML package objects if 3189the package initializer list is longer than the defined size of the 3190package. 3191This apparently can only happen if the BIOS changes the package size on 3192the 3193fly (seen in a _PSS object), as ASL compilers do not allow this. The 3194interpreter will truncate the package to the defined size (and issue an 3195error 3196message), but previously could leave the extra objects undeleted if they 3197were 3198pre-created during the argument processing (such is the case if the 3199package 3200consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 3201 3202Fixed a problem seen when a Buffer or String is stored to itself via ASL. 3203This has been reported in the field. Previously, ACPICA would zero out the 3204buffer/string. Now, the operation is treated as a noop. Provides Windows 3205compatibility. ACPICA BZ 803. Lin Ming. 3206 3207Removed an extraneous error message for ASL constructs of the form 3208Store(LocalX,LocalX) when LocalX is uninitialized. These curious 3209statements 3210are seen in many BIOSs and are once again treated as NOOPs and no error is 3211emitted when they are encountered. ACPICA BZ 785. 3212 3213Fixed an extraneous warning message if a _DSM reserved method returns a 3214Package object. _DSM can return any type of object, so validation on the 3215return type cannot be performed. ACPICA BZ 802. 3216 3217Example Code and Data Size: These are the sizes for the OS-independent 3218acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3219debug version of the code includes the debug output trace mechanism and 3220has a 3221much larger code and data size. 3222 3223 Previous Release: 3224 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 3225 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 3226 Current Release: 3227 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 3228 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 3229 32302) iASL Compiler/Disassembler and Tools: 3231 3232iASL: Fixed a problem with the use of the Alias operator and Resource 3233Templates. The correct alias is now constructed and no error is emitted. 3234ACPICA BZ 738. 3235 3236iASL: Implemented the -I option to specify additional search directories 3237for 3238include files. Allows multiple additional search paths for include files. 3239Directories are searched in the order specified on the command line (after 3240the local directory is searched.) ACPICA BZ 800. 3241 3242iASL: Fixed a problem where the full pathname for include files was not 3243emitted for warnings/errors. This caused the IDE support to not work 3244properly. ACPICA BZ 765. 3245 3246iASL: Implemented the -@ option to specify a Windows-style response file 3247containing additional command line options. ACPICA BZ 801. 3248 3249AcpiExec: Added support to load multiple AML files simultaneously (such as 3250a 3251DSDT and multiple SSDTs). Also added support for wildcards within the AML 3252pathname. These features allow all machine tables to be easily loaded and 3253debugged together. ACPICA BZ 804. 3254 3255Disassembler: Added missing support for disassembly of HEST table Error 3256Bank 3257subtables. 3258 3259---------------------------------------- 326030 July 2009. Summary of changes for version 20090730: 3261 3262The ACPI 4.0 implementation for ACPICA is complete with this release. 3263 32641) ACPI CA Core Subsystem: 3265 3266ACPI 4.0: Added header file support for all new and changed ACPI tables. 3267Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 3268for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 3269BERT, 3270EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 3271There 3272have been some ACPI 4.0 changes to other existing tables. Split the large 3273actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 3274 3275ACPI 4.0: Implemented predefined name validation for all new names. There 3276are 327731 new names in ACPI 4.0. The predefined validation module was split into 3278two 3279files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 3280 3281Implemented support for so-called "module-level executable code". This is 3282executable AML code that exists outside of any control method and is 3283intended 3284to be executed at table load time. Although illegal since ACPI 2.0, this 3285type 3286of code still exists and is apparently still being created. Blocks of this 3287code are now detected and executed as intended. Currently, the code blocks 3288must exist under either an If, Else, or While construct; these are the 3289typical cases seen in the field. ACPICA BZ 762. Lin Ming. 3290 3291Implemented an automatic dynamic repair for predefined names that return 3292nested Package objects. This applies to predefined names that are defined 3293to 3294return a variable-length Package of sub-packages. If the number of sub- 3295packages is one, BIOS code is occasionally seen that creates a simple 3296single 3297package with no sub-packages. This code attempts to fix the problem by 3298wrapping a new package object around the existing package. These methods 3299can 3300be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 3301790. 3302 3303Fixed a regression introduced in 20090625 for the AcpiGetDevices 3304interface. 3305The _HID/_CID matching was broken and no longer matched IDs correctly. 3306ACPICA 3307BZ 793. 3308 3309Fixed a problem with AcpiReset where the reset would silently fail if the 3310register was one of the protected I/O ports. AcpiReset now bypasses the 3311port 3312validation mechanism. This may eventually be driven into the 3313AcpiRead/Write 3314interfaces. 3315 3316Fixed a regression related to the recent update of the AcpiRead/Write 3317interfaces. A sleep/suspend could fail if the optional PM2 Control 3318register 3319does not exist during an attempt to write the Bus Master Arbitration bit. 3320(However, some hosts already delete the code that writes this bit, and the 3321code may in fact be obsolete at this date.) ACPICA BZ 799. 3322 3323Fixed a problem where AcpiTerminate could fault if inadvertently called 3324twice 3325in succession. ACPICA BZ 795. 3326 3327Example Code and Data Size: These are the sizes for the OS-independent 3328acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3329debug version of the code includes the debug output trace mechanism and 3330has a 3331much larger code and data size. 3332 3333 Previous Release: 3334 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 3335 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 3336 Current Release: 3337 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 3338 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 3339 33402) iASL Compiler/Disassembler and Tools: 3341 3342ACPI 4.0: Implemented disassembler support for all new ACPI tables and 3343changes to existing tables. ACPICA BZ 775. 3344 3345---------------------------------------- 334625 June 2009. Summary of changes for version 20090625: 3347 3348The ACPI 4.0 Specification was released on June 16 and is available at 3349www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 3350continue for the next few releases. 3351 33521) ACPI CA Core Subsystem: 3353 3354ACPI 4.0: Implemented interpreter support for the IPMI operation region 3355address space. Includes support for bi-directional data buffers and an 3356IPMI 3357address space handler (to be installed by an IPMI device driver.) ACPICA 3358BZ 3359773. Lin Ming. 3360 3361ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 3362support in both the header files and the disassembler. 3363 3364Completed a major update for the AcpiGetObjectInfo external interface. 3365Changes include: 3366 - Support for variable, unlimited length HID, UID, and CID strings. 3367 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 3368etc.) 3369 - Call the _SxW power methods on behalf of a device object. 3370 - Determine if a device is a PCI root bridge. 3371 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 3372These changes will require an update to all callers of this interface. See 3373the updated ACPICA Programmer Reference for details. One new source file 3374has 3375been added - utilities/utids.c. ACPICA BZ 368, 780. 3376 3377Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 3378transfers. The Value parameter has been extended from 32 bits to 64 bits 3379in 3380order to support new ACPI 4.0 tables. These changes will require an update 3381to 3382all callers of these interfaces. See the ACPICA Programmer Reference for 3383details. ACPICA BZ 768. 3384 3385Fixed several problems with AcpiAttachData. The handler was not invoked 3386when 3387the host node was deleted. The data sub-object was not automatically 3388deleted 3389when the host node was deleted. The interface to the handler had an unused 3390parameter, this was removed. ACPICA BZ 778. 3391 3392Enhanced the function that dumps ACPI table headers. All non-printable 3393characters in the string fields are now replaced with '?' (Signature, 3394OemId, 3395OemTableId, and CompilerId.) ACPI tables with non-printable characters in 3396these fields are occasionally seen in the field. ACPICA BZ 788. 3397 3398Fixed a problem with predefined method repair code where the code that 3399attempts to repair/convert an object of incorrect type is only executed on 3400the first time the predefined method is called. The mechanism that 3401disables 3402warnings on subsequent calls was interfering with the repair mechanism. 3403ACPICA BZ 781. 3404 3405Fixed a possible memory leak in the predefined validation/repair code when 3406a 3407buffer is automatically converted to an expected string object. 3408 3409Removed obsolete 16-bit files from the distribution and from the current 3410git 3411tree head. ACPICA BZ 776. 3412 3413Example Code and Data Size: These are the sizes for the OS-independent 3414acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3415debug version of the code includes the debug output trace mechanism and 3416has a 3417much larger code and data size. 3418 3419 Previous Release: 3420 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 3421 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 3422 Current Release: 3423 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 3424 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 3425 34262) iASL Compiler/Disassembler and Tools: 3427 3428ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 3429operation region keyword. ACPICA BZ 771, 772. Lin Ming. 3430 3431ACPI 4.0: iASL - implemented compile-time validation support for all new 3432predefined names and control methods (31 total). ACPICA BZ 769. 3433 3434---------------------------------------- 343521 May 2009. Summary of changes for version 20090521: 3436 34371) ACPI CA Core Subsystem: 3438 3439Disabled the preservation of the SCI enable bit in the PM1 control 3440register. 3441The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to 3442be 3443a "preserved" bit - "OSPM always preserves this bit position", section 34444.7.3.2.1. However, some machines fail if this bit is in fact preserved 3445because the bit needs to be explicitly set by the OS as a workaround. No 3446machines fail if the bit is not preserved. Therefore, ACPICA no longer 3447attempts to preserve this bit. 3448 3449Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 3450incorrectly formed _PRT package could cause a fault. Added validation to 3451ensure that each package element is actually a sub-package. 3452 3453Implemented a new interface to install or override a single control 3454method, 3455AcpiInstallMethod. This interface is useful when debugging in order to 3456repair 3457an existing method or to install a missing method without having to 3458override 3459the entire ACPI table. See the ACPICA Programmer Reference for use and 3460examples. Lin Ming, Bob Moore. 3461 3462Fixed several reference count issues with the DdbHandle object that is 3463created from a Load or LoadTable operator. Prevent premature deletion of 3464the 3465object. Also, mark the object as invalid once the table has been unloaded. 3466This is needed because the handle itself may not be deleted after the 3467table 3468unload, depending on whether it has been stored in a named object by the 3469caller. Lin Ming. 3470 3471Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 3472mutexes of the same sync level are acquired but then not released in 3473strict 3474opposite order, the internally maintained Current Sync Level becomes 3475confused 3476and can cause subsequent execution errors. ACPICA BZ 471. 3477 3478Changed the allowable release order for ASL mutex objects. The ACPI 4.0 3479specification has been changed to make the SyncLevel for mutex objects 3480more 3481useful. When releasing a mutex, the SyncLevel of the mutex must now be the 3482same as the current sync level. This makes more sense than the previous 3483rule 3484(SyncLevel less than or equal). This change updates the code to match the 3485specification. 3486 3487Fixed a problem with the local version of the AcpiOsPurgeCache function. 3488The 3489(local) cache must be locked during all cache object deletions. Andrew 3490Baumann. 3491 3492Updated the Load operator to use operation region interfaces. This 3493replaces 3494direct memory mapping with region access calls. Now, all region accesses 3495go 3496through the installed region handler as they should. 3497 3498Simplified and optimized the NsGetNextNode function. Reduced parameter 3499count 3500and reduced code for this frequently used function. 3501 3502Example Code and Data Size: These are the sizes for the OS-independent 3503acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3504debug version of the code includes the debug output trace mechanism and 3505has a 3506much larger code and data size. 3507 3508 Previous Release: 3509 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 3510 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 3511 Current Release: 3512 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 3513 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 3514 35152) iASL Compiler/Disassembler and Tools: 3516 3517Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 3518problems 3519with sub-table disassembly and handling invalid sub-tables. Attempt 3520recovery 3521after an invalid sub-table ID. 3522 3523---------------------------------------- 352422 April 2009. Summary of changes for version 20090422: 3525 35261) ACPI CA Core Subsystem: 3527 3528Fixed a compatibility issue with the recently released I/O port protection 3529mechanism. For windows compatibility, 1) On a port protection violation, 3530simply ignore the request and do not return an exception (allow the 3531control 3532method to continue execution.) 2) If only part of the request overlaps a 3533protected port, read/write the individual ports that are not protected. 3534Linux 3535BZ 13036. Lin Ming 3536 3537Enhanced the execution of the ASL/AML BreakPoint operator so that it 3538actually 3539breaks into the AML debugger if the debugger is present. This matches the 3540ACPI-defined behavior. 3541 3542Fixed several possible warnings related to the use of the configurable 3543ACPI_THREAD_ID. This type can now be configured as either an integer or a 3544pointer with no warnings. Also fixes several warnings in printf-like 3545statements for the 64-bit build when the type is configured as a pointer. 3546ACPICA BZ 766, 767. 3547 3548Fixed a number of possible warnings when compiling with gcc 4+ (depending 3549on 3550warning options.) Examples include printf formats, aliasing, unused 3551globals, 3552missing prototypes, missing switch default statements, use of non-ANSI 3553library functions, use of non-ANSI constructs. See generate/unix/Makefile 3554for 3555a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 3556 3557Example Code and Data Size: These are the sizes for the OS-independent 3558acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3559debug version of the code includes the debug output trace mechanism and 3560has a 3561much larger code and data size. 3562 3563 Previous Release: 3564 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 3565 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 3566 Current Release: 3567 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 3568 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 3569 35702) iASL Compiler/Disassembler and Tools: 3571 3572iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings 3573on 3574the 64-bit build. 3575 3576iASL: Fixed a problem where the Unix/Linux versions of the compiler could 3577not 3578correctly digest Windows/DOS formatted files (with CR/LF). 3579 3580iASL: Added a new option for "quiet mode" (-va) that produces only the 3581compilation summary, not individual errors and warnings. Useful for large 3582batch compilations. 3583 3584AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 3585timeout that can be used to detect hang conditions during execution of AML 3586code (includes both internal semaphores and AML-defined mutexes and 3587events.) 3588 3589Added new makefiles for the generation of acpica in a generic unix-like 3590environment. These makefiles are intended to generate the acpica tools and 3591utilities from the original acpica git source tree structure. 3592 3593Test Suites: Updated and cleaned up the documentation files. Updated the 3594copyrights to 2009, affecting all source files. Use the new version of 3595iASL 3596with quiet mode. Increased the number of available semaphores in the 3597Windows 3598OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 3599added 3600an alternate implementation of the semaphore timeout to allow aslts to 3601execute fully on Cygwin. 3602 3603---------------------------------------- 360420 March 2009. Summary of changes for version 20090320: 3605 36061) ACPI CA Core Subsystem: 3607 3608Fixed a possible race condition between AcpiWalkNamespace and dynamic 3609table 3610unloads. Added a reader/writer locking mechanism to allow multiple 3611concurrent 3612namespace walks (readers), but block a dynamic table unload until it can 3613gain 3614exclusive write access to the namespace. This fixes a problem where a 3615table 3616unload could (possibly catastrophically) delete the portion of the 3617namespace 3618that is currently being examined by a walk. Adds a new file, utlock.c, 3619that 3620implements the reader/writer lock mechanism. ACPICA BZ 749. 3621 3622Fixed a regression introduced in version 20090220 where a change to the 3623FADT 3624handling could cause the ACPICA subsystem to access non-existent I/O 3625ports. 3626 3627Modified the handling of FADT register and table (FACS/DSDT) addresses. 3628The 3629FADT can contain both 32-bit and 64-bit versions of these addresses. 3630Previously, the 64-bit versions were favored, meaning that if both 32 and 363164 3632versions were valid, but not equal, the 64-bit version was used. This was 3633found to cause some machines to fail. Now, in this case, the 32-bit 3634version 3635is used instead. This now matches the Windows behavior. 3636 3637Implemented a new mechanism to protect certain I/O ports. Provides 3638Microsoft 3639compatibility and protects the standard PC I/O ports from access via AML 3640code. Adds a new file, hwvalid.c 3641 3642Fixed a possible extraneous warning message from the FADT support. The 3643message warns of a 32/64 length mismatch between the legacy and GAS 3644definitions for a register. 3645 3646Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 3647is 3648made obsolete by the port protection mechanism above. It was previously 3649used 3650to validate the entire address range of an operation region, which could 3651be 3652incorrect if the range included illegal ports, but fields within the 3653operation region did not actually access those ports. Validation is now 3654performed on a per-field basis instead of the entire region. 3655 3656Modified the handling of the PM1 Status Register ignored bit (bit 11.) 3657Ignored bits must be "preserved" according to the ACPI spec. Usually, this 3658means a read/modify/write when writing to the register. However, for 3659status 3660registers, writing a one means clear the event. Writing a zero means 3661preserve 3662the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 3663and the ACPICA code now simply always writes a zero to the ignored bit. 3664 3665Modified the handling of ignored bits for the PM1 A/B Control Registers. 3666As 3667per the ACPI specification, for the control registers, preserve 3668(read/modify/write) all bits that are defined as either reserved or 3669ignored. 3670 3671Updated the handling of write-only bits in the PM1 A/B Control Registers. 3672When reading the register, zero the write-only bits as per the ACPI spec. 3673ACPICA BZ 443. Lin Ming. 3674 3675Removed "Linux" from the list of supported _OSI strings. Linux no longer 3676wants to reply true to this request. The Windows strings are the only 3677paths 3678through the AML that are tested and known to work properly. 3679 3680 Previous Release: 3681 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 3682 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 3683 Current Release: 3684 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 3685 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 3686 36872) iASL Compiler/Disassembler and Tools: 3688 3689Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 3690and 3691aetables.c 3692 3693---------------------------------------- 369420 February 2009. Summary of changes for version 20090220: 3695 36961) ACPI CA Core Subsystem: 3697 3698Optimized the ACPI register locking. Removed locking for reads from the 3699ACPI 3700bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 3701not required when reading the single-bit registers. The 3702AcpiGetRegisterUnlocked function is no longer needed and has been removed. 3703This will improve performance for reads on these registers. ACPICA BZ 760. 3704 3705Fixed the parameter validation for AcpiRead/Write. Now return 3706AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS 3707if 3708the register has an address of zero. Previously, these cases simply 3709returned 3710AE_OK. For optional registers such as PM1B status/enable/control, the 3711caller 3712should check for a valid register address before calling. ACPICA BZ 748. 3713 3714Renamed the external ACPI bit register access functions. Renamed 3715AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 3716functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 3717Also, restructured the code for these functions by simplifying the code 3718path 3719and condensing duplicate code to reduce code size. 3720 3721Added new functions to transparently handle the possibly split PM1 A/B 3722registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 3723now handle the split registers for PM1 Status, Enable, and Control. ACPICA 3724BZ 3725746. 3726 3727Added a function to handle the PM1 control registers, 3728AcpiHwWritePm1Control. 3729This function writes both of the PM1 control registers (A/B). These 3730registers 3731are different than the PM1 A/B status and enable registers in that 3732different 3733values can be written to the A/B registers. Most notably, the SLP_TYP bits 3734can be different, as per the values returned from the _Sx predefined 3735methods. 3736 3737Removed an extra register write within AcpiHwClearAcpiStatus. This 3738function 3739was writing an optional PM1B status register twice. The existing call to 3740the 3741low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 3742A/B 3743register. ACPICA BZ 751. 3744 3745Split out the PM1 Status registers from the FADT. Added new globals for 3746these 3747registers (A/B), similar to the way the PM1 Enable registers are handled. 3748Instead of overloading the FADT Event Register blocks. This makes the code 3749clearer and less prone to error. 3750 3751Fixed the warning message for when the platform contains too many ACPI 3752tables 3753for the default size of the global root table data structure. The 3754calculation 3755for the truncation value was incorrect. 3756 3757Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 3758obsolete macro, since it is now a simple reference to ->common.type. There 3759were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 3760 3761Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 3762TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 3763simply SLEEP_TYPE. ACPICA BZ 754. 3764 3765Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 3766function is only needed on 64-bit host operating systems and is thus not 3767included for 32-bit hosts. 3768 3769Debug output: print the input and result for invocations of the _OSI 3770reserved 3771control method via the ACPI_LV_INFO debug level. Also, reduced some of the 3772verbosity of this debug level. Len Brown. 3773 3774Example Code and Data Size: These are the sizes for the OS-independent 3775acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3776debug version of the code includes the debug output trace mechanism and 3777has a 3778much larger code and data size. 3779 3780 Previous Release: 3781 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 3782 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 3783 Current Release: 3784 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 3785 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 3786 37872) iASL Compiler/Disassembler and Tools: 3788 3789Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 3790various legal performance profiles. 3791 3792---------------------------------------- 379323 January 2009. Summary of changes for version 20090123: 3794 37951) ACPI CA Core Subsystem: 3796 3797Added the 2009 copyright to all module headers and signons. This affects 3798virtually every file in the ACPICA core subsystem, the iASL compiler, and 3799the tools/utilities. 3800 3801Implemented a change to allow the host to override any ACPI table, 3802including 3803dynamically loaded tables. Previously, only the DSDT could be replaced by 3804the 3805host. With this change, the AcpiOsTableOverride interface is called for 3806each 3807table found in the RSDT/XSDT during ACPICA initialization, and also 3808whenever 3809a table is dynamically loaded via the AML Load operator. 3810 3811Updated FADT flag definitions, especially the Boot Architecture flags. 3812 3813Debugger: For the Find command, automatically pad the input ACPI name with 3814underscores if the name is shorter than 4 characters. This enables a match 3815with the actual namespace entry which is itself padded with underscores. 3816 3817Example Code and Data Size: These are the sizes for the OS-independent 3818acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3819debug version of the code includes the debug output trace mechanism and 3820has a 3821much larger code and data size. 3822 3823 Previous Release: 3824 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 3825 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 3826 Current Release: 3827 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 3828 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 3829 38302) iASL Compiler/Disassembler and Tools: 3831 3832Fix build error under Bison-2.4. 3833 3834Dissasembler: Enhanced FADT support. Added decoding of the Boot 3835Architecture 3836flags. Now decode all flags, regardless of the FADT version. Flag output 3837includes the FADT version which first defined each flag. 3838 3839The iASL -g option now dumps the RSDT to a file (in addition to the FADT 3840and 3841DSDT). Windows only. 3842 3843---------------------------------------- 384404 December 2008. Summary of changes for version 20081204: 3845 38461) ACPI CA Core Subsystem: 3847 3848The ACPICA Programmer Reference has been completely updated and revamped 3849for 3850this release. This includes updates to the external interfaces, OSL 3851interfaces, the overview sections, and the debugger reference. 3852 3853Several new ACPICA interfaces have been implemented and documented in the 3854programmer reference: 3855AcpiReset - Writes the reset value to the FADT-defined reset register. 3856AcpiDisableAllGpes - Disable all available GPEs. 3857AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 3858AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 3859AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 3860AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 3861AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 3862 3863Most of the public ACPI hardware-related interfaces have been moved to a 3864new 3865file, components/hardware/hwxface.c 3866 3867Enhanced the FADT parsing and low-level ACPI register access: The ACPI 3868register lengths within the FADT are now used, and the low level ACPI 3869register access no longer hardcodes the ACPI register lengths. Given that 3870there may be some risk in actually trusting the FADT register lengths, a 3871run- 3872time option was added to fall back to the default hardcoded lengths if the 3873FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 3874option is set to true for now, and a warning is issued if a suspicious 3875FADT 3876register length is overridden with the default value. 3877 3878Fixed a reference count issue in NsRepairObject. This problem was 3879introduced 3880in version 20081031 as part of a fix to repair Buffer objects within 3881Packages. Lin Ming. 3882 3883Added semaphore support to the Linux/Unix application OS-services layer 3884(OSL). ACPICA BZ 448. Lin Ming. 3885 3886Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 3887will 3888be implemented in the OSL, or will binary semaphores be used instead. 3889 3890Example Code and Data Size: These are the sizes for the OS-independent 3891acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3892debug version of the code includes the debug output trace mechanism and 3893has a 3894much larger code and data size. 3895 3896 Previous Release: 3897 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 3898 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 3899 Current Release: 3900 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 3901 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 3902 39032) iASL Compiler/Disassembler and Tools: 3904 3905iASL: Completed the '-e' option to include additional ACPI tables in order 3906to 3907aid with disassembly and External statement generation. ACPICA BZ 742. Lin 3908Ming. 3909 3910iASL: Removed the "named object in while loop" error. The compiler cannot 3911determine how many times a loop will execute. ACPICA BZ 730. 3912 3913Disassembler: Implemented support for FADT revision 2 (MS extension). 3914ACPICA 3915BZ 743. 3916 3917Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 3918 3919---------------------------------------- 392031 October 2008. Summary of changes for version 20081031: 3921 39221) ACPI CA Core Subsystem: 3923 3924Restructured the ACPICA header files into public/private. acpi.h now 3925includes 3926only the "public" acpica headers. All other acpica headers are "private" 3927and 3928should not be included by acpica users. One new file, accommon.h is used 3929to 3930include the commonly used private headers for acpica code generation. 3931Future 3932plans include moving all private headers to a new subdirectory. 3933 3934Implemented an automatic Buffer->String return value conversion for 3935predefined ACPI methods. For these methods (such as _BIF), added automatic 3936conversion for return objects that are required to be a String, but a 3937Buffer 3938was found instead. This can happen when reading string battery data from 3939an 3940operation region, because it used to be difficult to convert the data from 3941buffer to string from within the ASL. Ensures that the host OS is provided 3942with a valid null-terminated string. Linux BZ 11822. 3943 3944Updated the FACS waking vector interfaces. Split 3945AcpiSetFirmwareWakingVector 3946into two: one for the 32-bit vector, another for the 64-bit vector. This 3947is 3948required because the host OS must setup the wake much differently for each 3949vector (real vs. protected mode, etc.) and the interface itself should not 3950be 3951deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 3952interface, as it served no purpose (only the firmware reads the vector, OS 3953only writes the vector.) ACPICA BZ 731. 3954 3955Implemented a mechanism to escape infinite AML While() loops. Added a loop 3956counter to force exit from AML While loops if the count becomes too large. 3957This can occur in poorly written AML when the hardware does not respond 3958within a while loop and the loop does not implement a timeout. The maximum 3959loop count is configurable. A new exception code is returned when a loop 3960is 3961broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 3962 3963Optimized the execution of AML While loops. Previously, a control state 3964object was allocated and freed for each execution of the loop. The 3965optimization is to simply reuse the control state for each iteration. This 3966speeds up the raw loop execution time by about 5%. 3967 3968Enhanced the implicit return mechanism. For Windows compatibility, return 3969an 3970implicit integer of value zero for methods that contain no executable 3971code. 3972Such methods are seen in the field as stubs (presumably), and can cause 3973drivers to fail if they expect a return value. Lin Ming. 3974 3975Allow multiple backslashes as root prefixes in namepaths. In a fully 3976qualified namepath, allow multiple backslash prefixes. This can happen 3977(and 3978is seen in the field) because of the use of a double-backslash in strings 3979(since backslash is the escape character) causing confusion. ACPICA BZ 739 3980Lin Ming. 3981 3982Emit a warning if two different FACS or DSDT tables are discovered in the 3983FADT. Checks if there are two valid but different addresses for the FACS 3984and 3985DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 3986 3987Consolidated the method argument count validation code. Merged the code 3988that 3989validates control method argument counts into the predefined validation 3990module. Eliminates possible multiple warnings for incorrect argument 3991counts. 3992 3993Implemented ACPICA example code. Includes code for ACPICA initialization, 3994handler installation, and calling a control method. Available at 3995source/tools/examples. 3996 3997Added a global pointer for FACS table to simplify internal FACS access. 3998Use 3999the global pointer instead of using AcpiGetTableByIndex for each FACS 4000access. 4001This simplifies the code for the Global Lock and the Firmware Waking 4002Vector(s). 4003 4004Example Code and Data Size: These are the sizes for the OS-independent 4005acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4006debug version of the code includes the debug output trace mechanism and 4007has a 4008much larger code and data size. 4009 4010 Previous Release: 4011 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 4012 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 4013 Current Release: 4014 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 4015 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 4016 40172) iASL Compiler/Disassembler and Tools: 4018 4019iASL: Improved disassembly of external method calls. Added the -e option 4020to 4021allow the inclusion of additional ACPI tables to help with the disassembly 4022of 4023method invocations and the generation of external declarations during the 4024disassembly. Certain external method invocations cannot be disassembled 4025properly without the actual declaration of the method. Use the -e option 4026to 4027include the table where the external method(s) are actually declared. Most 4028useful for disassembling SSDTs that make method calls back to the master 4029DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 4030-d 4031-e dsdt.aml ssdt1.aml 4032 4033iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 4034problem where the use of an alias within a namepath would result in a not 4035found error or cause the compiler to fault. Also now allows forward 4036references from the Alias operator itself. ACPICA BZ 738. 4037 4038---------------------------------------- 403926 September 2008. Summary of changes for version 20080926: 4040 40411) ACPI CA Core Subsystem: 4042 4043Designed and implemented a mechanism to validate predefined ACPI methods 4044and 4045objects. This code validates the predefined ACPI objects (objects whose 4046names 4047start with underscore) that appear in the namespace, at the time they are 4048evaluated. The argument count and the type of the returned object are 4049validated against the ACPI specification. The purpose of this validation 4050is 4051to detect problems with the BIOS-implemented predefined ACPI objects 4052before 4053the results are returned to the ACPI-related drivers. Future enhancements 4054may 4055include actual repair of incorrect return objects where possible. Two new 4056files are nspredef.c and acpredef.h. 4057 4058Fixed a fault in the AML parser if a memory allocation fails during the Op 4059completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 4060 4061Fixed an issue with implicit return compatibility. This change improves 4062the 4063implicit return mechanism to be more compatible with the MS interpreter. 4064Lin 4065Ming, ACPICA BZ 349. 4066 4067Implemented support for zero-length buffer-to-string conversions. Allow 4068zero 4069length strings during interpreter buffer-to-string conversions. For 4070example, 4071during the ToDecimalString and ToHexString operators, as well as implicit 4072conversions. Fiodor Suietov, ACPICA BZ 585. 4073 4074Fixed two possible memory leaks in the error exit paths of 4075AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 4076similar in that they use a stack of state objects in order to eliminate 4077recursion. The stack must be fully unwound and deallocated if an error 4078occurs. Lin Ming. ACPICA BZ 383. 4079 4080Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 4081global 4082ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 4083Moore ACPICA BZ 442. 4084 4085Removed the obsolete version number in module headers. Removed the 4086"$Revision" number that appeared in each module header. This version 4087number 4088was useful under SourceSafe and CVS, but has no meaning under git. It is 4089not 4090only incorrect, it could also be misleading. 4091 4092Example Code and Data Size: These are the sizes for the OS-independent 4093acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4094debug version of the code includes the debug output trace mechanism and 4095has a 4096much larger code and data size. 4097 4098 Previous Release: 4099 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 4100 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 4101 Current Release: 4102 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 4103 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 4104 4105---------------------------------------- 410629 August 2008. Summary of changes for version 20080829: 4107 41081) ACPI CA Core Subsystem: 4109 4110Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 4111Reference. Changes include the elimination of cheating on the Object field 4112for the DdbHandle subtype, addition of a reference class field to 4113differentiate the various reference types (instead of an AML opcode), and 4114the 4115cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 4116 4117Reduce an error to a warning for an incorrect method argument count. 4118Previously aborted with an error if too few arguments were passed to a 4119control method via the external ACPICA interface. Now issue a warning 4120instead 4121and continue. Handles the case where the method inadvertently declares too 4122many arguments, but does not actually use the extra ones. Applies mainly 4123to 4124the predefined methods. Lin Ming. Linux BZ 11032. 4125 4126Disallow the evaluation of named object types with no intrinsic value. 4127Return 4128AE_TYPE for objects that have no value and therefore evaluation is 4129undefined: 4130Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 4131of 4132these types were allowed, but an exception would be generated at some 4133point 4134during the evaluation. Now, the error is generated up front. 4135 4136Fixed a possible memory leak in the AcpiNsGetExternalPathname function 4137(nsnames.c). Fixes a leak in the error exit path. 4138 4139Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 4140debug 4141levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 4142ACPI_EXCEPTION 4143interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 4144ACPI_LV_EVENTS. 4145 4146Removed obsolete and/or unused exception codes from the acexcep.h header. 4147There is the possibility that certain device drivers may be affected if 4148they 4149use any of these exceptions. 4150 4151The ACPICA documentation has been added to the public git source tree, 4152under 4153acpica/documents. Included are the ACPICA programmer reference, the iASL 4154compiler reference, and the changes.txt release logfile. 4155 4156Example Code and Data Size: These are the sizes for the OS-independent 4157acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4158debug version of the code includes the debug output trace mechanism and 4159has a 4160much larger code and data size. 4161 4162 Previous Release: 4163 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 4164 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 4165 Current Release: 4166 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 4167 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 4168 41692) iASL Compiler/Disassembler and Tools: 4170 4171Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 4172defines _SCP with 3 arguments. Previous versions defined it with only 1 4173argument. iASL now allows both definitions. 4174 4175iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 4176length subtables when disassembling ACPI tables. Also fixed a couple of 4177errors where a full 16-bit table type field was not extracted from the 4178input 4179properly. 4180 4181acpisrc: Improve comment counting mechanism for generating source code 4182statistics. Count first and last lines of multi-line comments as 4183whitespace, 4184not comment lines. Handle Linux legal header in addition to standard 4185acpica 4186header. 4187 4188---------------------------------------- 4189 419029 July 2008. Summary of changes for version 20080729: 4191 41921) ACPI CA Core Subsystem: 4193 4194Fix a possible deadlock in the GPE dispatch. Remove call to 4195AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 4196attempt 4197to acquire the GPE lock but can deadlock since the GPE lock is already 4198held 4199at dispatch time. This code was introduced in version 20060831 as a 4200response 4201to Linux BZ 6881 and has since been removed from Linux. 4202 4203Add a function to dereference returned reference objects. Examines the 4204return 4205object from a call to AcpiEvaluateObject. Any Index or RefOf references 4206are 4207automatically dereferenced in an attempt to return something useful (these 4208reference types cannot be converted into an external ACPI_OBJECT.) 4209Provides 4210MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 4211 4212x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 4213subtables for the MADT and one new subtable for the SRAT. Includes 4214disassembler and AcpiSrc support. Data from the Intel 64 Architecture 4215x2APIC 4216Specification, June 2008. 4217 4218Additional error checking for pathname utilities. Add error check after 4219all 4220calls to AcpiNsGetPathnameLength. Add status return from 4221AcpiNsBuildExternalPath and check after all calls. Add parameter 4222validation 4223to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 4224 4225Return status from the global init function AcpiUtGlobalInitialize. This 4226is 4227used by both the kernel subsystem and the utilities such as iASL compiler. 4228The function could possibly fail when the caches are initialized. Yang Yi. 4229 4230Add a function to decode reference object types to strings. Created for 4231improved error messages. 4232 4233Improve object conversion error messages. Better error messages during 4234object 4235conversion from internal to the external ACPI_OBJECT. Used for external 4236calls 4237to AcpiEvaluateObject. 4238 4239Example Code and Data Size: These are the sizes for the OS-independent 4240acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4241debug version of the code includes the debug output trace mechanism and 4242has a 4243much larger code and data size. 4244 4245 Previous Release: 4246 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 4247 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 4248 Current Release: 4249 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 4250 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 4251 42522) iASL Compiler/Disassembler and Tools: 4253 4254Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 4255introduced in version 20080701. If the object being evaluated (via execute 4256command) is not a method, the debugger can hang while trying to obtain 4257non- 4258existent parameters. 4259 4260iASL: relax error for using reserved "_T_x" identifiers. These names can 4261appear in a disassembled ASL file if they were emitted by the original 4262compiler. Instead of issuing an error or warning and forcing the user to 4263manually change these names, issue a remark instead. 4264 4265iASL: error if named object created in while loop. Emit an error if any 4266named 4267object is created within a While loop. If allowed, this code will generate 4268a 4269run-time error on the second iteration of the loop when an attempt is made 4270to 4271create the same named object twice. ACPICA bugzilla 730. 4272 4273iASL: Support absolute pathnames for include files. Add support for 4274absolute 4275pathnames within the Include operator. previously, only relative pathnames 4276were supported. 4277 4278iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 4279Descriptor. 4280The ACPI spec requires one interrupt minimum. BZ 423 4281 4282iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 4283Handles the case for the Interrupt Resource Descriptor where 4284the ResourceSource argument is omitted but ResourceSourceIndex 4285is present. Now leave room for the Index. BZ 426 4286 4287iASL: Prevent error message if CondRefOf target does not exist. Fixes 4288cases 4289where an error message is emitted if the target does not exist. BZ 516 4290 4291iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 4292(get ACPI tables on Windows). This was apparently broken in version 429320070919. 4294 4295AcpiXtract: Handle EOF while extracting data. Correctly handle the case 4296where 4297the EOF happens immediately after the last table in the input file. Print 4298completion message. Previously, no message was displayed in this case. 4299 4300---------------------------------------- 430101 July 2008. Summary of changes for version 20080701: 4302 43030) Git source tree / acpica.org 4304 4305Fixed a problem where a git-clone from http would not transfer the entire 4306source tree. 4307 43081) ACPI CA Core Subsystem: 4309 4310Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 4311enable bit. Now performs a read-change-write of the enable register 4312instead 4313of simply writing out the cached enable mask. This will prevent 4314inadvertent 4315enabling of GPEs if a rogue GPE is received during initialization (before 4316GPE 4317handlers are installed.) 4318 4319Implemented a copy for dynamically loaded tables. Previously, dynamically 4320loaded tables were simply mapped - but on some machines this memory is 4321corrupted after suspend. Now copy the table to a local buffer. For the 4322OpRegion case, added checksum verify. Use the table length from the table 4323header, not the region length. For the Buffer case, use the table length 4324also. Dennis Noordsij, Bob Moore. BZ 10734 4325 4326Fixed a problem where the same ACPI table could not be dynamically loaded 4327and 4328unloaded more than once. Without this change, a table cannot be loaded 4329again 4330once it has been loaded/unloaded one time. The current mechanism does not 4331unregister a table upon an unload. During a load, if the same table is 4332found, 4333this no longer returns an exception. BZ 722 4334 4335Fixed a problem where the wrong descriptor length was calculated for the 4336EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 4337are calculated as 12 bytes long, but the actual length in the internal 4338descriptor is 16 because of the round-up to 8 on the 64-bit build. 4339Reported 4340by Linn Crosetto. BZ 728 4341 4342Fixed a possible memory leak in the Unload operator. The DdbHandle 4343returned 4344by Load() did not have its reference count decremented during unload, 4345leading 4346to a memory leak. Lin Ming. BZ 727 4347 4348Fixed a possible memory leak when deleting thermal/processor objects. Any 4349associated notify handlers (and objects) were not being deleted. Fiodor 4350Suietov. BZ 506 4351 4352Fixed the ordering of the ASCII names in the global mutex table to match 4353the 4354actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 4355only. 4356Vegard Nossum. BZ 726 4357 4358Enhanced the AcpiGetObjectInfo interface to return the number of required 4359arguments if the object is a control method. Added this call to the 4360debugger 4361so the proper number of default arguments are passed to a method. This 4362prevents a warning when executing methods from AcpiExec. 4363 4364Added a check for an invalid handle in AcpiGetObjectInfo. Return 4365AE_BAD_PARAMETER if input handle is invalid. BZ 474 4366 4367Fixed an extraneous warning from exconfig.c on the 64-bit build. 4368 4369Example Code and Data Size: These are the sizes for the OS-independent 4370acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4371debug version of the code includes the debug output trace mechanism and 4372has a 4373much larger code and data size. 4374 4375 Previous Release: 4376 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 4377 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 4378 Current Release: 4379 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 4380 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 4381 43822) iASL Compiler/Disassembler and Tools: 4383 4384iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 4385resource descriptor names. 4386 4387iASL: Detect invalid ASCII characters in input (windows version). Removed 4388the 4389"-CF" flag from the flex compile, enables correct detection of non-ASCII 4390characters in the input. BZ 441 4391 4392iASL: Eliminate warning when result of LoadTable is not used. Eliminate 4393the 4394"result of operation not used" warning when the DDB handle returned from 4395LoadTable is not used. The warning is not needed. BZ 590 4396 4397AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method 4398to 4399pass address of table to the AML. Added option to disable OpRegion 4400simulation 4401to allow creation of an OpRegion with a real address that was passed to 4402_CFG. 4403All of this allows testing of the Load and Unload operators from AcpiExec. 4404 4405Debugger: update tables command for unloaded tables. Handle unloaded 4406tables 4407and use the standard table header output routine. 4408 4409---------------------------------------- 441009 June 2008. Summary of changes for version 20080609: 4411 44121) ACPI CA Core Subsystem: 4413 4414Implemented a workaround for reversed _PRT entries. A significant number 4415of 4416BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 4417change dynamically detects and repairs this problem. Provides 4418compatibility 4419with MS ACPI. BZ 6859 4420 4421Simplified the internal ACPI hardware interfaces to eliminate the locking 4422flag parameter from Register Read/Write. Added a new external interface, 4423AcpiGetRegisterUnlocked. 4424 4425Fixed a problem where the invocation of a GPE control method could hang. 4426This 4427was a regression introduced in 20080514. The new method argument count 4428validation mechanism can enter an infinite loop when a GPE method is 4429dispatched. Problem fixed by removing the obsolete code that passed GPE 4430block 4431information to the notify handler via the control method parameter 4432pointer. 4433 4434Fixed a problem where the _SST execution status was incorrectly returned 4435to 4436the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 443720080514. _SST is optional and a NOT_FOUND exception should never be 4438returned. BZ 716 4439 4440Fixed a problem where a deleted object could be accessed from within the 4441AML 4442parser. This was a regression introduced in version 20080123 as a fix for 4443the 4444Unload operator. Lin Ming. BZ 10669 4445 4446Cleaned up the debug operand dump mechanism. Eliminated unnecessary 4447operands 4448and eliminated the use of a negative index in a loop. Operands are now 4449displayed in the correct order, not backwards. This also fixes a 4450regression 4451introduced in 20080514 on 64-bit systems where the elimination of 4452ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 4453715 4454 4455Fixed a possible memory leak in EvPciConfigRegionSetup where the error 4456exit 4457path did not delete a locally allocated structure. 4458 4459Updated definitions for the DMAR and SRAT tables to synchronize with the 4460current specifications. Includes disassembler support. 4461 4462Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 4463loop termination value was used. Loop terminated on iteration early, 4464missing 4465one mutex. Linn Crosetto 4466 4467Example Code and Data Size: These are the sizes for the OS-independent 4468acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4469debug version of the code includes the debug output trace mechanism and 4470has a 4471much larger code and data size. 4472 4473 Previous Release: 4474 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 4475 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 4476 Current Release: 4477 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 4478 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 4479 44802) iASL Compiler/Disassembler and Tools: 4481 4482Disassembler: Implemented support for EisaId() within _CID objects. Now 4483disassemble integer _CID objects back to EisaId invocations, including 4484multiple integers within _CID packages. Includes single-step support for 4485debugger also. 4486 4487Disassembler: Added support for DMAR and SRAT table definition changes. 4488 4489---------------------------------------- 449014 May 2008. Summary of changes for version 20080514: 4491 44921) ACPI CA Core Subsystem: 4493 4494Fixed a problem where GPEs were enabled too early during the ACPICA 4495initialization. This could lead to "handler not installed" errors on some 4496machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 4497This 4498ensures that all operation regions and devices throughout the namespace 4499have 4500been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 4501 4502Implemented a change to the enter sleep code. Moved execution of the _GTS 4503method to just before setting sleep enable bit. The execution was moved 4504from 4505AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 4506immediately before the SLP_EN bit is set, as per the ACPI specification. 4507Luming Yu, BZ 1653. 4508 4509Implemented a fix to disable unknown GPEs (2nd version). Now always 4510disable 4511the GPE, even if ACPICA thinks that that it is already disabled. It is 4512possible that the AML or some other code has enabled the GPE unbeknownst 4513to 4514the ACPICA code. 4515 4516Fixed a problem with the Field operator where zero-length fields would 4517return 4518an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 4519ASL 4520field declarations in Field(), BankField(), and IndexField(). BZ 10606. 4521 4522Implemented a fix for the Load operator, now load the table at the 4523namespace 4524root. This reverts a change introduced in version 20071019. The table is 4525now 4526loaded at the namespace root even though this goes against the ACPI 4527specification. This provides compatibility with other ACPI 4528implementations. 4529The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 4530Ming. 4531 4532Fixed a problem where ACPICA would not Load() tables with unusual 4533signatures. 4534Now ignore ACPI table signature for Load() operator. Only "SSDT" is 4535acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 4536Therefore, signature validation is worthless. Apparently MS ACPI accepts 4537such 4538signatures, ACPICA must be compatible. BZ 10454. 4539 4540Fixed a possible negative array index in AcpiUtValidateException. Added 4541NULL 4542fields to the exception string arrays to eliminate a -1 subtraction on the 4543SubStatus field. 4544 4545Updated the debug tracking macros to reduce overall code and data size. 4546Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 4547instead of pointers to static strings. Jan Beulich and Bob Moore. 4548 4549Implemented argument count checking in control method invocation via 4550AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 4551many. This applies only to extern programmatic control method execution, 4552not 4553method-to-method calls within the AML. Lin Ming. 4554 4555Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 4556no 4557longer needed, especially with the removal of 16-bit support. It was 4558replaced 4559mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit 4560on 456132/64-bit platforms is required. 4562 4563Added the C const qualifier for appropriate string constants -- mostly 4564MODULE_NAME and printf format strings. Jan Beulich. 4565 4566Example Code and Data Size: These are the sizes for the OS-independent 4567acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4568debug version of the code includes the debug output trace mechanism and 4569has a 4570much larger code and data size. 4571 4572 Previous Release: 4573 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 4574 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 4575 Current Release: 4576 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 4577 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 4578 45792) iASL Compiler/Disassembler and Tools: 4580 4581Implemented ACPI table revision ID validation in the disassembler. Zero is 4582always invalid. For DSDTs, the ID controls the interpreter integer width. 45831 4584means 32-bit and this is unusual. 2 or greater is 64-bit. 4585 4586---------------------------------------- 458721 March 2008. Summary of changes for version 20080321: 4588 45891) ACPI CA Core Subsystem: 4590 4591Implemented an additional change to the GPE support in order to suppress 4592spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 4593disable incoming GPEs that are neither enabled nor disabled -- meaning 4594that 4595the GPE is unknown to the system. This should prevent future interrupt 4596floods 4597from that GPE. BZ 6217 (Zhang Rui) 4598 4599Fixed a problem where NULL package elements were not returned to the 4600AcpiEvaluateObject interface correctly. The element was simply ignored 4601instead of returning a NULL ACPI_OBJECT package element, potentially 4602causing 4603a buffer overflow and/or confusing the caller who expected a fixed number 4604of 4605elements. BZ 10132 (Lin Ming, Bob Moore) 4606 4607Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 4608Dword, 4609Qword), Field, BankField, and IndexField operators when invoked from 4610inside 4611an executing control method. In this case, these operators created 4612namespace 4613nodes that were incorrectly left marked as permanent nodes instead of 4614temporary nodes. This could cause a problem if there is race condition 4615between an exiting control method and a running namespace walk. (Reported 4616by 4617Linn Crosetto) 4618 4619Fixed a problem where the CreateField and CreateXXXField operators would 4620incorrectly allow duplicate names (the name of the field) with no 4621exception 4622generated. 4623 4624Implemented several changes for Notify handling. Added support for new 4625Notify 4626values (ACPI 2.0+) and improved the Notify debug output. Notify on 4627PowerResource objects is no longer allowed, as per the ACPI specification. 4628(Bob Moore, Zhang Rui) 4629 4630All Reference Objects returned via the AcpiEvaluateObject interface are 4631now 4632marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 4633for 4634NULL objects - either NULL package elements or unresolved named 4635references. 4636 4637Fixed a problem where an extraneous debug message was produced for package 4638objects (when debugging enabled). The message "Package List length larger 4639than NumElements count" is now produced in the correct case, and is now an 4640error message rather than a debug message. Added a debug message for the 4641opposite case, where NumElements is larger than the Package List (the 4642package 4643will be padded out with NULL elements as per the ACPI spec.) 4644 4645Implemented several improvements for the output of the ASL "Debug" object 4646to 4647clarify and keep all data for a given object on one output line. 4648 4649Fixed two size calculation issues with the variable-length Start Dependent 4650resource descriptor. 4651 4652Example Code and Data Size: These are the sizes for the OS-independent 4653acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4654debug version of the code includes the debug output trace mechanism and 4655has 4656a much larger code and data size. 4657 4658 Previous Release: 4659 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 4660 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 4661 Current Release: 4662 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 4663 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 4664 46652) iASL Compiler/Disassembler and Tools: 4666 4667Fixed a problem with the use of the Switch operator where execution of the 4668containing method by multiple concurrent threads could cause an 4669AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 4670actual Switch opcode, it must be simulated with local named temporary 4671variables and if/else pairs. The solution chosen was to mark any method 4672that 4673uses Switch as Serialized, thus preventing multiple thread entries. BZ 4674469. 4675 4676---------------------------------------- 467713 February 2008. Summary of changes for version 20080213: 4678 46791) ACPI CA Core Subsystem: 4680 4681Implemented another MS compatibility design change for GPE/Notify 4682handling. 4683GPEs are now cleared/enabled asynchronously to allow all pending notifies 4684to 4685complete first. It is expected that the OSL will queue the enable request 4686behind all pending notify requests (may require changes to the local host 4687OSL 4688in AcpiOsExecute). Alexey Starikovskiy. 4689 4690Fixed a problem where buffer and package objects passed as arguments to a 4691control method via the external AcpiEvaluateObject interface could cause 4692an 4693AE_AML_INTERNAL exception depending on the order and type of operators 4694executed by the target control method. 4695 4696Fixed a problem where resource descriptor size optimization could cause a 4697problem when a _CRS resource template is passed to a _SRS method. The _SRS 4698resource template must use the same descriptors (with the same size) as 4699returned from _CRS. This change affects the following resource 4700descriptors: 4701IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 47029487) 4703 4704Fixed a problem where a CopyObject to RegionField, BankField, and 4705IndexField 4706objects did not perform an implicit conversion as it should. These types 4707must 4708retain their initial type permanently as per the ACPI specification. 4709However, 4710a CopyObject to all other object types should not perform an implicit 4711conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 4712 4713Fixed a problem with the AcpiGetDevices interface where the mechanism to 4714match device CIDs did not examine the entire list of available CIDs, but 4715instead aborted on the first non-matching CID. Andrew Patterson. 4716 4717Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 4718was 4719inadvertently changed to return a 16-bit value instead of a 32-bit value, 4720truncating the upper dword of a 64-bit value. This macro is only used to 4721display debug output, so no incorrect calculations were made. Also, 4722reimplemented the macro so that a 64-bit shift is not performed by 4723inefficient compilers. 4724 4725Added missing va_end statements that should correspond with each va_start 4726statement. 4727 4728Example Code and Data Size: These are the sizes for the OS-independent 4729acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4730debug version of the code includes the debug output trace mechanism and 4731has 4732a much larger code and data size. 4733 4734 Previous Release: 4735 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 4736 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 4737 Current Release: 4738 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 4739 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 4740 47412) iASL Compiler/Disassembler and Tools: 4742 4743Implemented full disassembler support for the following new ACPI tables: 4744BERT, EINJ, and ERST. Implemented partial disassembler support for the 4745complicated HEST table. These tables support the Windows Hardware Error 4746Architecture (WHEA). 4747 4748---------------------------------------- 474923 January 2008. Summary of changes for version 20080123: 4750 47511) ACPI CA Core Subsystem: 4752 4753Added the 2008 copyright to all module headers and signons. This affects 4754virtually every file in the ACPICA core subsystem, the iASL compiler, and 4755the tools/utilities. 4756 4757Fixed a problem with the SizeOf operator when used with Package and Buffer 4758objects. These objects have deferred execution for some arguments, and the 4759execution is now completed before the SizeOf is executed. This problem 4760caused 4761unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 4762BZ 47639558 4764 4765Implemented an enhancement to the interpreter "slack mode". In the absence 4766of 4767an explicit return or an implicitly returned object from the last executed 4768opcode, a control method will now implicitly return an integer of value 0 4769for 4770Microsoft compatibility. (Lin Ming) BZ 392 4771 4772Fixed a problem with the Load operator where an exception was not returned 4773in 4774the case where the table is already loaded. (Lin Ming) BZ 463 4775 4776Implemented support for the use of DDBHandles as an Indexed Reference, as 4777per 4778the ACPI spec. (Lin Ming) BZ 486 4779 4780Implemented support for UserTerm (Method invocation) for the Unload 4781operator 4782as per the ACPI spec. (Lin Ming) BZ 580 4783 4784Fixed a problem with the LoadTable operator where the OemId and OemTableId 4785input strings could cause unexpected failures if they were shorter than 4786the 4787maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 4788 4789Implemented support for UserTerm (Method invocation) for the Unload 4790operator 4791as per the ACPI spec. (Lin Ming) BZ 580 4792 4793Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 4794HEST, 4795IBFT, UEFI, WDAT. Disassembler support is forthcoming. 4796 4797Example Code and Data Size: These are the sizes for the OS-independent 4798acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4799debug version of the code includes the debug output trace mechanism and 4800has 4801a much larger code and data size. 4802 4803 Previous Release: 4804 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 4805 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 4806 Current Release: 4807 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 4808 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 4809 48102) iASL Compiler/Disassembler and Tools: 4811 4812Implemented support in the disassembler for checksum validation on 4813incoming 4814binary DSDTs and SSDTs. If incorrect, a message is displayed within the 4815table 4816header dump at the start of the disassembly. 4817 4818Implemented additional debugging information in the namespace listing file 4819created during compilation. In addition to the namespace hierarchy, the 4820full 4821pathname to each namespace object is displayed. 4822 4823Fixed a problem with the disassembler where invalid ACPI tables could 4824cause 4825faults or infinite loops. 4826 4827Fixed an unexpected parse error when using the optional "parameter types" 4828list in a control method declaration. (Lin Ming) BZ 397 4829 4830Fixed a problem where two External declarations with the same name did not 4831cause an error (Lin Ming) BZ 509 4832 4833Implemented support for full TermArgs (adding Argx, Localx and method 4834invocation) for the ParameterData parameter to the LoadTable operator. 4835(Lin 4836Ming) BZ 583,587 4837 4838---------------------------------------- 483919 December 2007. Summary of changes for version 20071219: 4840 48411) ACPI CA Core Subsystem: 4842 4843Implemented full support for deferred execution for the TermArg string 4844arguments for DataTableRegion. This enables forward references and full 4845operand resolution for the three string arguments. Similar to 4846OperationRegion 4847deferred argument execution.) Lin Ming. BZ 430 4848 4849Implemented full argument resolution support for the BankValue argument to 4850BankField. Previously, only constants were supported, now any TermArg may 4851be 4852used. Lin Ming BZ 387, 393 4853 4854Fixed a problem with AcpiGetDevices where the search of a branch of the 4855device tree could be terminated prematurely. In accordance with the ACPI 4856specification, the search down the current branch is terminated if a 4857device 4858is both not present and not functional (instead of just not present.) 4859Yakui 4860Zhao. 4861 4862Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 4863if 4864the underlying AML code changed the GPE enable registers. Now, any unknown 4865incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 4866disabled 4867instead of simply ignored. Rui Zhang. 4868 4869Fixed a problem with Index Fields where the Index register was incorrectly 4870limited to a maximum of 32 bits. Now any size may be used. 4871 4872Fixed a couple memory leaks associated with "implicit return" objects when 4873the AML Interpreter slack mode is enabled. Lin Ming BZ 349 4874 4875Example Code and Data Size: These are the sizes for the OS-independent 4876acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4877debug version of the code includes the debug output trace mechanism and 4878has 4879a much larger code and data size. 4880 4881 Previous Release: 4882 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 4883 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 4884 Current Release: 4885 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 4886 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 4887 4888---------------------------------------- 488914 November 2007. Summary of changes for version 20071114: 4890 48911) ACPI CA Core Subsystem: 4892 4893Implemented event counters for each of the Fixed Events, the ACPI SCI 4894(interrupt) itself, and control methods executed. Named 4895AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 4896These 4897should be useful for debugging and statistics. 4898 4899Implemented a new external interface, AcpiGetStatistics, to retrieve the 4900contents of the various event counters. Returns the current values for 4901AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 4902AcpiMethodCount. The interface can be expanded in the future if new 4903counters 4904are added. Device drivers should use this interface rather than access the 4905counters directly. 4906 4907Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 4908the ShortDivide function worked incorrectly, causing problems with the BCD 4909functions with large input values. A truncation from 64-bit to 32-bit 4910inadvertently occurred. Internal BZ 435. Lin Ming 4911 4912Fixed a problem with Index references passed as method arguments. 4913References 4914passed as arguments to control methods were dereferenced immediately 4915(before 4916control was passed to the called method). The references are now correctly 4917passed directly to the called method. BZ 5389. Lin Ming 4918 4919Fixed a problem with CopyObject used in conjunction with the Index 4920operator. 4921The reference was incorrectly dereferenced before the copy. The reference 4922is 4923now correctly copied. BZ 5391. Lin Ming 4924 4925Fixed a problem with Control Method references within Package objects. 4926These 4927references are now correctly generated. This completes the package 4928construction overhaul that began in version 20071019. 4929 4930Example Code and Data Size: These are the sizes for the OS-independent 4931acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4932debug version of the code includes the debug output trace mechanism and 4933has 4934a much larger code and data size. 4935 4936 Previous Release: 4937 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 4938 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 4939 Current Release: 4940 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 4941 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 4942 4943 49442) iASL Compiler/Disassembler and Tools: 4945 4946The AcpiExec utility now installs handlers for all of the predefined 4947Operation Region types. New types supported are: PCI_Config, CMOS, and 4948PCIBARTarget. 4949 4950Fixed a problem with the 64-bit version of AcpiExec where the extended 4951(64- 4952bit) address fields for the DSDT and FACS within the FADT were not being 4953used, causing truncation of the upper 32-bits of these addresses. Lin Ming 4954and Bob Moore 4955 4956---------------------------------------- 495719 October 2007. Summary of changes for version 20071019: 4958 49591) ACPI CA Core Subsystem: 4960 4961Fixed a problem with the Alias operator when the target of the alias is a 4962named ASL operator that opens a new scope -- Scope, Device, PowerResource, 4963Processor, and ThermalZone. In these cases, any children of the original 4964operator could not be accessed via the alias, potentially causing 4965unexpected 4966AE_NOT_FOUND exceptions. (BZ 9067) 4967 4968Fixed a problem with the Package operator where all named references were 4969created as object references and left otherwise unresolved. According to 4970the 4971ACPI specification, a Package can only contain Data Objects or references 4972to 4973control methods. The implication is that named references to Data Objects 4974(Integer, Buffer, String, Package, BufferField, Field) should be resolved 4975immediately upon package creation. This is the approach taken with this 4976change. References to all other named objects (Methods, Devices, Scopes, 4977etc.) are all now properly created as reference objects. (BZ 5328) 4978 4979Reverted a change to Notify handling that was introduced in version 498020070508. This version changed the Notify handling from asynchronous to 4981fully synchronous (Device driver Notify handling with respect to the 4982Notify 4983ASL operator). It was found that this change caused more problems than it 4984solved and was removed by most users. 4985 4986Fixed a problem with the Increment and Decrement operators where the type 4987of 4988the target object could be unexpectedly and incorrectly changed. (BZ 353) 4989Lin Ming. 4990 4991Fixed a problem with the Load and LoadTable operators where the table 4992location within the namespace was ignored. Instead, the table was always 4993loaded into the root or current scope. Lin Ming. 4994 4995Fixed a problem with the Load operator when loading a table from a buffer 4996object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 4997 4998Fixed a problem with the Debug object where a store of a DdbHandle 4999reference 5000object to the Debug object could cause a fault. 5001 5002Added a table checksum verification for the Load operator, in the case 5003where 5004the load is from a buffer. (BZ 578). 5005 5006Implemented additional parameter validation for the LoadTable operator. 5007The 5008length of the input strings SignatureString, OemIdString, and OemTableId 5009are 5010now checked for maximum lengths. (BZ 582) Lin Ming. 5011 5012Example Code and Data Size: These are the sizes for the OS-independent 5013acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5014debug version of the code includes the debug output trace mechanism and 5015has 5016a much larger code and data size. 5017 5018 Previous Release: 5019 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 5020 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 5021 Current Release: 5022 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 5023 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 5024 5025 50262) iASL Compiler/Disassembler: 5027 5028Fixed a problem where if a single file was specified and the file did not 5029exist, no error message was emitted. (Introduced with wildcard support in 5030version 20070917.) 5031 5032---------------------------------------- 503319 September 2007. Summary of changes for version 20070919: 5034 50351) ACPI CA Core Subsystem: 5036 5037Designed and implemented new external interfaces to install and remove 5038handlers for ACPI table-related events. Current events that are defined 5039are 5040LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 5041they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 5042AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 5043 5044Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 5045(acpi_serialized option on Linux) could cause some systems to hang during 5046initialization. (Bob Moore) BZ 8171 5047 5048Fixed a problem where objects of certain types (Device, ThermalZone, 5049Processor, PowerResource) can be not found if they are declared and 5050referenced from within the same control method (Lin Ming) BZ 341 5051 5052Example Code and Data Size: These are the sizes for the OS-independent 5053acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5054debug version of the code includes the debug output trace mechanism and 5055has 5056a much larger code and data size. 5057 5058 Previous Release: 5059 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 5060 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 5061 Current Release: 5062 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 5063 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 5064 5065 50662) iASL Compiler/Disassembler: 5067 5068Implemented support to allow multiple files to be compiled/disassembled in 5069a 5070single invocation. This includes command line wildcard support for both 5071the 5072Windows and Unix versions of the compiler. This feature simplifies the 5073disassembly and compilation of multiple ACPI tables in a single directory. 5074 5075---------------------------------------- 507608 May 2007. Summary of changes for version 20070508: 5077 50781) ACPI CA Core Subsystem: 5079 5080Implemented a Microsoft compatibility design change for the handling of 5081the 5082Notify AML operator. Previously, notify handlers were dispatched and 5083executed completely asynchronously in a deferred thread. The new design 5084still executes the notify handlers in a different thread, but the original 5085thread that executed the Notify() now waits at a synchronization point for 5086the notify handler to complete. Some machines depend on a synchronous 5087Notify 5088operator in order to operate correctly. 5089 5090Implemented support to allow Package objects to be passed as method 5091arguments to the external AcpiEvaluateObject interface. Previously, this 5092would return the AE_NOT_IMPLEMENTED exception. This feature had not been 5093implemented since there were no reserved control methods that required it 5094until recently. 5095 5096Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 5097that 5098contained invalid non-zero values in reserved fields could cause later 5099failures because these fields have meaning in later revisions of the FADT. 5100For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 5101fields 5102are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 5103 5104Fixed a problem where the Global Lock handle was not properly updated if a 5105thread that acquired the Global Lock via executing AML code then attempted 5106to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 5107Joe 5108Liu. 5109 5110Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 5111could be corrupted if the interrupt being removed was at the head of the 5112list. Reported by Linn Crosetto. 5113 5114Example Code and Data Size: These are the sizes for the OS-independent 5115acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5116debug version of the code includes the debug output trace mechanism and 5117has 5118a much larger code and data size. 5119 5120 Previous Release: 5121 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 5122 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 5123 Current Release: 5124 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 5125 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 5126 5127---------------------------------------- 512820 March 2007. Summary of changes for version 20070320: 5129 51301) ACPI CA Core Subsystem: 5131 5132Implemented a change to the order of interpretation and evaluation of AML 5133operand objects within the AML interpreter. The interpreter now evaluates 5134operands in the order that they appear in the AML stream (and the 5135corresponding ASL code), instead of in the reverse order (after the entire 5136operand list has been parsed). The previous behavior caused several subtle 5137incompatibilities with the Microsoft AML interpreter as well as being 5138somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 5139 5140Implemented a change to the ACPI Global Lock support. All interfaces to 5141the 5142global lock now allow the same thread to acquire the lock multiple times. 5143This affects the AcpiAcquireGlobalLock external interface to the global 5144lock 5145as well as the internal use of the global lock to support AML fields -- a 5146control method that is holding the global lock can now simultaneously 5147access 5148AML fields that require global lock protection. Previously, in both cases, 5149this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 5150to 5151AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 5152Controller. There is no change to the behavior of the AML Acquire 5153operator, 5154as this can already be used to acquire a mutex multiple times by the same 5155thread. BZ 8066. With assistance from Alexey Starikovskiy. 5156 5157Fixed a problem where invalid objects could be referenced in the AML 5158Interpreter after error conditions. During operand evaluation, ensure that 5159the internal "Return Object" field is cleared on error and only valid 5160pointers are stored there. Caused occasional access to deleted objects 5161that 5162resulted in "large reference count" warning messages. Valery Podrezov. 5163 5164Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 5165on 5166deeply nested control method invocations. BZ 7873, local BZ 487. Valery 5167Podrezov. 5168 5169Fixed an internal problem with the handling of result objects on the 5170interpreter result stack. BZ 7872. Valery Podrezov. 5171 5172Removed obsolete code that handled the case where AML_NAME_OP is the 5173target 5174of a reference (Reference.Opcode). This code was no longer necessary. BZ 51757874. Valery Podrezov. 5176 5177Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was 5178a 5179remnant from the previously discontinued 16-bit support. 5180 5181Example Code and Data Size: These are the sizes for the OS-independent 5182acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5183debug version of the code includes the debug output trace mechanism and 5184has 5185a much larger code and data size. 5186 5187 Previous Release: 5188 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 5189 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 5190 Current Release: 5191 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 5192 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 5193 5194---------------------------------------- 519526 January 2007. Summary of changes for version 20070126: 5196 51971) ACPI CA Core Subsystem: 5198 5199Added the 2007 copyright to all module headers and signons. This affects 5200virtually every file in the ACPICA core subsystem, the iASL compiler, and 5201the utilities. 5202 5203Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 5204during a table load. A bad pointer was passed in the case where the DSDT 5205is 5206overridden, causing a fault in this case. 5207 5208Example Code and Data Size: These are the sizes for the OS-independent 5209acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5210debug version of the code includes the debug output trace mechanism and 5211has 5212a much larger code and data size. 5213 5214 Previous Release: 5215 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 5216 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 5217 Current Release: 5218 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 5219 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 5220 5221---------------------------------------- 522215 December 2006. Summary of changes for version 20061215: 5223 52241) ACPI CA Core Subsystem: 5225 5226Support for 16-bit ACPICA has been completely removed since it is no 5227longer 5228necessary and it clutters the code. All 16-bit macros, types, and 5229conditional compiles have been removed, cleaning up and simplifying the 5230code 5231across the entire subsystem. DOS support is no longer needed since the 5232bootable Linux firmware kit is now available. 5233 5234The handler for the Global Lock is now removed during AcpiTerminate to 5235enable a clean subsystem restart, via the implementation of the 5236AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 5237HP) 5238 5239Implemented enhancements to the multithreading support within the debugger 5240to enable improved multithreading debugging and evaluation of the 5241subsystem. 5242(Valery Podrezov) 5243 5244Debugger: Enhanced the Statistics/Memory command to emit the total 5245(maximum) 5246memory used during the execution, as well as the maximum memory consumed 5247by 5248each of the various object types. (Valery Podrezov) 5249 5250Example Code and Data Size: These are the sizes for the OS-independent 5251acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5252debug version of the code includes the debug output trace mechanism and 5253has 5254a much larger code and data size. 5255 5256 Previous Release: 5257 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 5258 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 5259 Current Release: 5260 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 5261 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 5262 5263 52642) iASL Compiler/Disassembler and Tools: 5265 5266AcpiExec: Implemented a new option (-m) to display full memory use 5267statistics upon subsystem/program termination. (Valery Podrezov) 5268 5269---------------------------------------- 527009 November 2006. Summary of changes for version 20061109: 5271 52721) ACPI CA Core Subsystem: 5273 5274Optimized the Load ASL operator in the case where the source operand is an 5275operation region. Simply map the operation region memory, instead of 5276performing a bytewise read. (Region must be of type SystemMemory, see 5277below.) 5278 5279Fixed the Load ASL operator for the case where the source operand is a 5280region field. A buffer object is also allowed as the source operand. BZ 5281480 5282 5283Fixed a problem where the Load ASL operator allowed the source operand to 5284be 5285an operation region of any type. It is now restricted to regions of type 5286SystemMemory, as per the ACPI specification. BZ 481 5287 5288Additional cleanup and optimizations for the new Table Manager code. 5289 5290AcpiEnable will now fail if all of the required ACPI tables are not loaded 5291(FADT, FACS, DSDT). BZ 477 5292 5293Added #pragma pack(8/4) to acobject.h to ensure that the structures in 5294this 5295header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 5296manually optimized to be aligned and will not work if it is byte-packed. 5297 5298Example Code and Data Size: These are the sizes for the OS-independent 5299acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5300debug version of the code includes the debug output trace mechanism and 5301has 5302a much larger code and data size. 5303 5304 Previous Release: 5305 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 5306 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 5307 Current Release: 5308 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 5309 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 5310 5311 53122) iASL Compiler/Disassembler and Tools: 5313 5314Fixed a problem where the presence of the _OSI predefined control method 5315within complex expressions could cause an internal compiler error. 5316 5317AcpiExec: Implemented full region support for multiple address spaces. 5318SpaceId is now part of the REGION object. BZ 429 5319 5320---------------------------------------- 532111 October 2006. Summary of changes for version 20061011: 5322 53231) ACPI CA Core Subsystem: 5324 5325Completed an AML interpreter performance enhancement for control method 5326execution. Previously a 2-pass parse/execution, control methods are now 5327completely parsed and executed in a single pass. This improves overall 5328interpreter performance by ~25%, reduces code size, and reduces CPU stack 5329use. (Valery Podrezov + interpreter changes in version 20051202 that 5330eliminated namespace loading during the pass one parse.) 5331 5332Implemented _CID support for PCI Root Bridge detection. If the _HID does 5333not 5334match the predefined PCI Root Bridge IDs, the _CID list (if present) is 5335now 5336obtained and also checked for an ID match. 5337 5338Implemented additional support for the PCI _ADR execution: upsearch until 5339a 5340device scope is found before executing _ADR. This allows PCI_Config 5341operation regions to be declared locally within control methods underneath 5342PCI device objects. 5343 5344Fixed a problem with a possible race condition between threads executing 5345AcpiWalkNamespace and the AML interpreter. This condition was removed by 5346modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 5347entries created during any concurrent control method execution. An 5348additional namespace race condition is known to exist between 5349AcpiWalkNamespace and the Load/Unload ASL operators and is still under 5350investigation. 5351 5352Restructured the AML ParseLoop function, breaking it into several 5353subfunctions in order to reduce CPU stack use and improve maintainability. 5354(Mikhail Kouzmich) 5355 5356AcpiGetHandle: Fix for parameter validation to detect invalid combinations 5357of prefix handle and pathname. BZ 478 5358 5359Example Code and Data Size: These are the sizes for the OS-independent 5360acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5361debug version of the code includes the debug output trace mechanism and 5362has 5363a much larger code and data size. 5364 5365 Previous Release: 5366 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 5367 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 5368 Current Release: 5369 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 5370 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 5371 53722) iASL Compiler/Disassembler and Tools: 5373 5374Ported the -g option (get local ACPI tables) to the new ACPICA Table 5375Manager 5376to restore original behavior. 5377 5378---------------------------------------- 537927 September 2006. Summary of changes for version 20060927: 5380 53811) ACPI CA Core Subsystem: 5382 5383Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 5384These functions now use a spinlock for mutual exclusion and the interrupt 5385level indication flag is not needed. 5386 5387Fixed a problem with the Global Lock where the lock could appear to be 5388obtained before it is actually obtained. The global lock semaphore was 5389inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 5390Suietov. 5391 5392Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 5393during 5394a read from a buffer or region field. (BZ 458) Fiodor Suietov. 5395 5396Example Code and Data Size: These are the sizes for the OS-independent 5397acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5398debug version of the code includes the debug output trace mechanism and 5399has 5400a much larger code and data size. 5401 5402 Previous Release: 5403 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 5404 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 5405 Current Release: 5406 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 5407 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 5408 5409 54102) iASL Compiler/Disassembler and Tools: 5411 5412Fixed a compilation problem with the pre-defined Resource Descriptor field 5413names where an "object does not exist" error could be incorrectly 5414generated 5415if the parent ResourceTemplate pathname places the template within a 5416different namespace scope than the current scope. (BZ 7212) 5417 5418Fixed a problem where the compiler could hang after syntax errors detected 5419in an ElseIf construct. (BZ 453) 5420 5421Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 5422operator. An incorrect output filename was produced when this parameter 5423was 5424a null string (""). Now, the original input filename is used as the AML 5425output filename, with an ".aml" extension. 5426 5427Implemented a generic batch command mode for the AcpiExec utility (execute 5428any AML debugger command) (Valery Podrezov). 5429 5430---------------------------------------- 543112 September 2006. Summary of changes for version 20060912: 5432 54331) ACPI CA Core Subsystem: 5434 5435Enhanced the implementation of the "serialized mode" of the interpreter 5436(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 5437specified, instead of creating a serialization semaphore per control 5438method, 5439the interpreter lock is simply no longer released before a blocking 5440operation during control method execution. This effectively makes the AML 5441Interpreter single-threaded. The overhead of a semaphore per-method is 5442eliminated. 5443 5444Fixed a regression where an error was no longer emitted if a control 5445method 5446attempts to create 2 objects of the same name. This once again returns 5447AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 5448that 5449will dynamically serialize the control method to possible prevent future 5450errors. (BZ 440) 5451 5452Integrated a fix for a problem with PCI Express HID detection in the PCI 5453Config Space setup procedure. (BZ 7145) 5454 5455Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 5456AcpiHwInitialize function - the FADT registers are now validated when the 5457table is loaded. 5458 5459Added two new warnings during FADT verification - 1) if the FADT is larger 5460than the largest known FADT version, and 2) if there is a mismatch between 5461a 546232-bit block address and the 64-bit X counterpart (when both are non- 5463zero.) 5464 5465Example Code and Data Size: These are the sizes for the OS-independent 5466acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5467debug version of the code includes the debug output trace mechanism and 5468has 5469a much larger code and data size. 5470 5471 Previous Release: 5472 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 5473 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 5474 Current Release: 5475 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 5476 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 5477 5478 54792) iASL Compiler/Disassembler and Tools: 5480 5481Fixed a problem with the implementation of the Switch() operator where the 5482temporary variable was declared too close to the actual Switch, instead of 5483at method level. This could cause a problem if the Switch() operator is 5484within a while loop, causing an error on the second iteration. (BZ 460) 5485 5486Disassembler - fix for error emitted for unknown type for target of scope 5487operator. Now, ignore it and continue. 5488 5489Disassembly of an FADT now verifies the input FADT and reports any errors 5490found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 5491 5492Disassembly of raw data buffers with byte initialization data now prefixes 5493each output line with the current buffer offset. 5494 5495Disassembly of ASF! table now includes all variable-length data fields at 5496the end of some of the subtables. 5497 5498The disassembler now emits a comment if a buffer appears to be a 5499ResourceTemplate, but cannot be disassembled as such because the EndTag 5500does 5501not appear at the very end of the buffer. 5502 5503AcpiExec - Added the "-t" command line option to enable the serialized 5504mode 5505of the AML interpreter. 5506 5507---------------------------------------- 550831 August 2006. Summary of changes for version 20060831: 5509 55101) ACPI CA Core Subsystem: 5511 5512Miscellaneous fixes for the Table Manager: 5513- Correctly initialize internal common FADT for all 64-bit "X" fields 5514- Fixed a couple table mapping issues during table load 5515- Fixed a couple alignment issues for IA64 5516- Initialize input array to zero in AcpiInitializeTables 5517- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 5518AcpiGetTableByIndex 5519 5520Change for GPE support: when a "wake" GPE is received, all wake GPEs are 5521now 5522immediately disabled to prevent the waking GPE from firing again and to 5523prevent other wake GPEs from interrupting the wake process. 5524 5525Added the AcpiGpeCount global that tracks the number of processed GPEs, to 5526be used for debugging systems with a large number of ACPI interrupts. 5527 5528Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 5529both the ACPICA headers and the disassembler. 5530 5531Example Code and Data Size: These are the sizes for the OS-independent 5532acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5533debug version of the code includes the debug output trace mechanism and 5534has 5535a much larger code and data size. 5536 5537 Previous Release: 5538 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 5539 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 5540 Current Release: 5541 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 5542 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 5543 5544 55452) iASL Compiler/Disassembler and Tools: 5546 5547Disassembler support for the DMAR ACPI table. 5548 5549---------------------------------------- 555023 August 2006. Summary of changes for version 20060823: 5551 55521) ACPI CA Core Subsystem: 5553 5554The Table Manager component has been completely redesigned and 5555reimplemented. The new design is much simpler, and reduces the overall 5556code 5557and data size of the kernel-resident ACPICA by approximately 5%. Also, it 5558is 5559now possible to obtain the ACPI tables very early during kernel 5560initialization, even before dynamic memory management is initialized. 5561(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 5562 5563Obsolete ACPICA interfaces: 5564 5565- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 5566init 5567time). 5568- AcpiLoadTable: Not needed. 5569- AcpiUnloadTable: Not needed. 5570 5571New ACPICA interfaces: 5572 5573- AcpiInitializeTables: Must be called before the table manager can be 5574used. 5575- AcpiReallocateRootTable: Used to transfer the root table to dynamically 5576allocated memory after it becomes available. 5577- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 5578in the RSDT/XSDT. 5579 5580Other ACPICA changes: 5581 5582- AcpiGetTableHeader returns the actual mapped table header, not a copy. 5583Use 5584AcpiOsUnmapMemory to free this mapping. 5585- AcpiGetTable returns the actual mapped table. The mapping is managed 5586internally and must not be deleted by the caller. Use of this interface 5587causes no additional dynamic memory allocation. 5588- AcpiFindRootPointer: Support for physical addressing has been 5589eliminated, 5590it appeared to be unused. 5591- The interface to AcpiOsMapMemory has changed to be consistent with the 5592other allocation interfaces. 5593- The interface to AcpiOsGetRootPointer has changed to eliminate 5594unnecessary 5595parameters. 5596- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 5597bit platforms. Was previously 64 bits on all platforms. 5598- The interface to the ACPI Global Lock acquire/release macros have 5599changed 5600slightly since ACPICA no longer keeps a local copy of the FACS with a 5601constructed pointer to the actual global lock. 5602 5603Porting to the new table manager: 5604 5605- AcpiInitializeTables: Must be called once, and can be called anytime 5606during the OS initialization process. It allows the host to specify an 5607area 5608of memory to be used to store the internal version of the RSDT/XSDT (root 5609table). This allows the host to access ACPI tables before memory 5610management 5611is initialized and running. 5612- AcpiReallocateRootTable: Can be called after memory management is 5613running 5614to copy the root table to a dynamically allocated array, freeing up the 5615scratch memory specified in the call to AcpiInitializeTables. 5616- AcpiSubsystemInitialize: This existing interface is independent of the 5617Table Manager, and does not have to be called before the Table Manager can 5618be used, it only must be called before the rest of ACPICA can be used. 5619- ACPI Tables: Some changes have been made to the names and structure of 5620the 5621actbl.h and actbl1.h header files and may require changes to existing 5622code. 5623For example, bitfields have been completely removed because of their lack 5624of 5625portability across C compilers. 5626- Update interfaces to the Global Lock acquire/release macros if local 5627versions are used. (see acwin.h) 5628 5629Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 5630 5631New files: tbfind.c 5632 5633Example Code and Data Size: These are the sizes for the OS-independent 5634acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5635debug version of the code includes the debug output trace mechanism and 5636has 5637a much larger code and data size. 5638 5639 Previous Release: 5640 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 5641 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 5642 Current Release: 5643 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 5644 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 5645 5646 56472) iASL Compiler/Disassembler and Tools: 5648 5649No changes for this release. 5650 5651---------------------------------------- 565221 July 2006. Summary of changes for version 20060721: 5653 56541) ACPI CA Core Subsystem: 5655 5656The full source code for the ASL test suite used to validate the iASL 5657compiler and the ACPICA core subsystem is being released with the ACPICA 5658source for the first time. The source is contained in a separate package 5659and 5660consists of over 1100 files that exercise all ASL/AML operators. The 5661package 5662should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 5663Suietov) 5664 5665Completed a new design and implementation for support of the ACPI Global 5666Lock. On the OS side, the global lock is now treated as a standard AML 5667mutex. Previously, multiple OS threads could "acquire" the global lock 5668simultaneously. However, this could cause the BIOS to be starved out of 5669the 5670lock - especially in cases such as the Embedded Controller driver where 5671there is a tight coupling between the OS and the BIOS. 5672 5673Implemented an optimization for the ACPI Global Lock interrupt mechanism. 5674The Global Lock interrupt handler no longer queues the execution of a 5675separate thread to signal the global lock semaphore. Instead, the 5676semaphore 5677is signaled directly from the interrupt handler. 5678 5679Implemented support within the AML interpreter for package objects that 5680contain a larger AML length (package list length) than the package element 5681count. In this case, the length of the package is truncated to match the 5682package element count. Some BIOS code apparently modifies the package 5683length 5684on the fly, and this change supports this behavior. Provides compatibility 5685with the MS AML interpreter. (With assistance from Fiodor Suietov) 5686 5687Implemented a temporary fix for the BankValue parameter of a Bank Field to 5688support all constant values, now including the Zero and One opcodes. 5689Evaluation of this parameter must eventually be converted to a full 5690TermArg 5691evaluation. A not-implemented error is now returned (temporarily) for non- 5692constant values for this parameter. 5693 5694Fixed problem reports (Fiodor Suietov) integrated: 5695- Fix for premature object deletion after CopyObject on Operation Region 5696(BZ 5697350) 5698 5699Example Code and Data Size: These are the sizes for the OS-independent 5700acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5701debug version of the code includes the debug output trace mechanism and 5702has 5703a much larger code and data size. 5704 5705 Previous Release: 5706 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 5707 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 5708 Current Release: 5709 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 5710 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 5711 5712 57132) iASL Compiler/Disassembler and Tools: 5714 5715No changes for this release. 5716 5717---------------------------------------- 571807 July 2006. Summary of changes for version 20060707: 5719 57201) ACPI CA Core Subsystem: 5721 5722Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 5723that do not allow the initialization of address pointers within packed 5724structures - even though the hardware itself may support misaligned 5725transfers. Some of the debug data structures are packed by default to 5726minimize size. 5727 5728Added an error message for the case where AcpiOsGetThreadId() returns 5729zero. 5730A non-zero value is required by the core ACPICA code to ensure the proper 5731operation of AML mutexes and recursive control methods. 5732 5733The DSDT is now the only ACPI table that determines whether the AML 5734interpreter is in 32-bit or 64-bit mode. Not really a functional change, 5735but 5736the hooks for per-table 32/64 switching have been removed from the code. A 5737clarification to the ACPI specification is forthcoming in ACPI 3.0B. 5738 5739Fixed a possible leak of an OwnerID in the error path of 5740AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 5741deletion to a single place in AcpiTbUninstallTable to correct possible 5742leaks 5743when using the AcpiTbDeleteTablesByType interface (with assistance from 5744Lance Ortiz.) 5745 5746Fixed a problem with Serialized control methods where the semaphore 5747associated with the method could be over-signaled after multiple method 5748invocations. 5749 5750Fixed two issues with the locking of the internal namespace data 5751structure. 5752Both the Unload() operator and AcpiUnloadTable interface now lock the 5753namespace during the namespace deletion associated with the table unload 5754(with assistance from Linn Crosetto.) 5755 5756Fixed problem reports (Valery Podrezov) integrated: 5757- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 5758 5759Fixed problem reports (Fiodor Suietov) integrated: 5760- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 5761- On Address Space handler deletion, needless deactivation call (BZ 374) 5762- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 5763- Possible memory leak, Notify sub-objects of Processor, Power, 5764ThermalZone 5765(BZ 376) 5766- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 5767- Minimum Length of RSDT should be validated (BZ 379) 5768- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 5769Handler (BZ (380) 5770- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 5771loaded 5772(BZ 381) 5773 5774Example Code and Data Size: These are the sizes for the OS-independent 5775acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5776debug version of the code includes the debug output trace mechanism and 5777has 5778a much larger code and data size. 5779 5780 Previous Release: 5781 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 5782 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 5783 Current Release: 5784 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 5785 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 5786 5787 57882) iASL Compiler/Disassembler and Tools: 5789 5790Fixed problem reports: 5791Compiler segfault when ASL contains a long (>1024) String declaration (BZ 5792436) 5793 5794---------------------------------------- 579523 June 2006. Summary of changes for version 20060623: 5796 57971) ACPI CA Core Subsystem: 5798 5799Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 5800allows the type to be customized to the host OS for improved efficiency 5801(since a spinlock is usually a very small object.) 5802 5803Implemented support for "ignored" bits in the ACPI registers. According to 5804the ACPI specification, these bits should be preserved when writing the 5805registers via a read/modify/write cycle. There are 3 bits preserved in 5806this 5807manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 5808 5809Implemented the initial deployment of new OSL mutex interfaces. Since some 5810host operating systems have separate mutex and semaphore objects, this 5811feature was requested. The base code now uses mutexes (and the new mutex 5812interfaces) wherever a binary semaphore was used previously. However, for 5813the current release, the mutex interfaces are defined as macros to map 5814them 5815to the existing semaphore interfaces. Therefore, no OSL changes are 5816required 5817at this time. (See acpiosxf.h) 5818 5819Fixed several problems with the support for the control method SyncLevel 5820parameter. The SyncLevel now works according to the ACPI specification and 5821in concert with the Mutex SyncLevel parameter, since the current SyncLevel 5822is a property of the executing thread. Mutual exclusion for control 5823methods 5824is now implemented with a mutex instead of a semaphore. 5825 5826Fixed three instances of the use of the C shift operator in the bitfield 5827support code (exfldio.c) to avoid the use of a shift value larger than the 5828target data width. The behavior of C compilers is undefined in this case 5829and 5830can cause unpredictable results, and therefore the case must be detected 5831and 5832avoided. (Fiodor Suietov) 5833 5834Added an info message whenever an SSDT or OEM table is loaded dynamically 5835via the Load() or LoadTable() ASL operators. This should improve debugging 5836capability since it will show exactly what tables have been loaded (beyond 5837the tables present in the RSDT/XSDT.) 5838 5839Example Code and Data Size: These are the sizes for the OS-independent 5840acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5841debug version of the code includes the debug output trace mechanism and 5842has 5843a much larger code and data size. 5844 5845 Previous Release: 5846 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 5847 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 5848 Current Release: 5849 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 5850 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 5851 5852 58532) iASL Compiler/Disassembler and Tools: 5854 5855No changes for this release. 5856 5857---------------------------------------- 585808 June 2006. Summary of changes for version 20060608: 5859 58601) ACPI CA Core Subsystem: 5861 5862Converted the locking mutex used for the ACPI hardware to a spinlock. This 5863change should eliminate all problems caused by attempting to acquire a 5864semaphore at interrupt level, and it means that all ACPICA external 5865interfaces that directly access the ACPI hardware can be safely called 5866from 5867interrupt level. OSL code that implements the semaphore interfaces should 5868be 5869able to eliminate any workarounds for being called at interrupt level. 5870 5871Fixed a regression introduced in 20060526 where the ACPI device 5872initialization could be prematurely aborted with an AE_NOT_FOUND if a 5873device 5874did not have an optional _INI method. 5875 5876Fixed an IndexField issue where a write to the Data Register should be 5877limited in size to the AccessSize (width) of the IndexField itself. (BZ 5878433, 5879Fiodor Suietov) 5880 5881Fixed problem reports (Valery Podrezov) integrated: 5882- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 5883 5884Fixed problem reports (Fiodor Suietov) integrated: 5885- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 5886 5887Removed four global mutexes that were obsolete and were no longer being 5888used. 5889 5890Example Code and Data Size: These are the sizes for the OS-independent 5891acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5892debug version of the code includes the debug output trace mechanism and 5893has 5894a much larger code and data size. 5895 5896 Previous Release: 5897 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 5898 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 5899 Current Release: 5900 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 5901 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 5902 5903 59042) iASL Compiler/Disassembler and Tools: 5905 5906Fixed a fault when using -g option (get tables from registry) on Windows 5907machines. 5908 5909Fixed problem reports integrated: 5910- Generate error if CreateField NumBits parameter is zero. (BZ 405) 5911- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 5912Suietov) 5913- Global table revision override (-r) is ignored (BZ 413) 5914 5915---------------------------------------- 591626 May 2006. Summary of changes for version 20060526: 5917 59181) ACPI CA Core Subsystem: 5919 5920Restructured, flattened, and simplified the internal interfaces for 5921namespace object evaluation - resulting in smaller code, less CPU stack 5922use, 5923and fewer interfaces. (With assistance from Mikhail Kouzmich) 5924 5925Fixed a problem with the CopyObject operator where the first parameter was 5926not typed correctly for the parser, interpreter, compiler, and 5927disassembler. 5928Caused various errors and unexpected behavior. 5929 5930Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 5931produced incorrect results with some C compilers. Since the behavior of C 5932compilers when the shift value is larger than the datatype width is 5933apparently not well defined, the interpreter now detects this condition 5934and 5935simply returns zero as expected in all such cases. (BZ 395) 5936 5937Fixed problem reports (Valery Podrezov) integrated: 5938- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 5939- Allow interpreter to handle nested method declarations (BZ 5361) 5940 5941Fixed problem reports (Fiodor Suietov) integrated: 5942- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 5943- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 5944356) 5945- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 5946- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 5947- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 5948- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 5949- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 5950- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 5951- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 5952365) 5953- Status of the Global Initialization Handler call not used (BZ 366) 5954- Incorrect object parameter to Global Initialization Handler (BZ 367) 5955 5956Example Code and Data Size: These are the sizes for the OS-independent 5957acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5958debug version of the code includes the debug output trace mechanism and 5959has 5960a much larger code and data size. 5961 5962 Previous Release: 5963 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 5964 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 5965 Current Release: 5966 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 5967 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 5968 5969 59702) iASL Compiler/Disassembler and Tools: 5971 5972Modified the parser to allow the names IO, DMA, and IRQ to be used as 5973namespace identifiers with no collision with existing resource descriptor 5974macro names. This provides compatibility with other ASL compilers and is 5975most useful for disassembly/recompilation of existing tables without parse 5976errors. (With assistance from Thomas Renninger) 5977 5978Disassembler: fixed an incorrect disassembly problem with the 5979DataTableRegion and CopyObject operators. Fixed a possible fault during 5980disassembly of some Alias operators. 5981 5982---------------------------------------- 598312 May 2006. Summary of changes for version 20060512: 5984 59851) ACPI CA Core Subsystem: 5986 5987Replaced the AcpiOsQueueForExecution interface with a new interface named 5988AcpiOsExecute. The major difference is that the new interface does not 5989have 5990a Priority parameter, this appeared to be useless and has been replaced by 5991a 5992Type parameter. The Type tells the host what type of execution is being 5993requested, such as global lock handler, notify handler, GPE handler, etc. 5994This allows the host to queue and execute the request as appropriate for 5995the 5996request type, possibly using different work queues and different 5997priorities 5998for the various request types. This enables fixes for multithreading 5999deadlock problems such as BZ #5534, and will require changes to all 6000existing 6001OS interface layers. (Alexey Starikovskiy and Bob Moore) 6002 6003Fixed a possible memory leak associated with the support for the so-called 6004"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 6005Suietov) 6006 6007Fixed a problem with the Load() operator where a table load from an 6008operation region could overwrite an internal table buffer by up to 7 bytes 6009and cause alignment faults on IPF systems. (With assistance from Luming 6010Yu) 6011 6012Example Code and Data Size: These are the sizes for the OS-independent 6013acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6014debug version of the code includes the debug output trace mechanism and 6015has 6016a much larger code and data size. 6017 6018 Previous Release: 6019 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 6020 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 6021 Current Release: 6022 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 6023 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 6024 6025 6026 60272) iASL Compiler/Disassembler and Tools: 6028 6029Disassembler: Implemented support to cross reference the internal 6030namespace 6031and automatically generate ASL External() statements for symbols not 6032defined 6033within the current table being disassembled. This will simplify the 6034disassembly and recompilation of interdependent tables such as SSDTs since 6035these statements will no longer have to be added manually. 6036 6037Disassembler: Implemented experimental support to automatically detect 6038invocations of external control methods and generate appropriate 6039External() 6040statements. This is problematic because the AML cannot be correctly parsed 6041until the number of arguments for each control method is known. Currently, 6042standalone method invocations and invocations as the source operand of a 6043Store() statement are supported. 6044 6045Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 6046LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 6047LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 6048more readable and likely closer to the original ASL source. 6049 6050---------------------------------------- 605121 April 2006. Summary of changes for version 20060421: 6052 60531) ACPI CA Core Subsystem: 6054 6055Removed a device initialization optimization introduced in 20051216 where 6056the _STA method was not run unless an _INI was also present for the same 6057device. This optimization could cause problems because it could allow _INI 6058methods to be run within a not-present device subtree. (If a not-present 6059device had no _INI, _STA would not be run, the not-present status would 6060not 6061be discovered, and the children of the device would be incorrectly 6062traversed.) 6063 6064Implemented a new _STA optimization where namespace subtrees that do not 6065contain _INI are identified and ignored during device initialization. 6066Selectively running _STA can significantly improve boot time on large 6067machines (with assistance from Len Brown.) 6068 6069Implemented support for the device initialization case where the returned 6070_STA flags indicate a device not-present but functioning. In this case, 6071_INI 6072is not run, but the device children are examined for presence, as per the 6073ACPI specification. 6074 6075Implemented an additional change to the IndexField support in order to 6076conform to MS behavior. The value written to the Index Register is not 6077simply a byte offset, it is a byte offset in units of the access width of 6078the parent Index Field. (Fiodor Suietov) 6079 6080Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 6081interface is called during the creation of all AML operation regions, and 6082allows the host OS to exert control over what addresses it will allow the 6083AML code to access. Operation Regions whose addresses are disallowed will 6084cause a runtime exception when they are actually accessed (will not affect 6085or abort table loading.) See oswinxf or osunixxf for an example 6086implementation. 6087 6088Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 6089interface allows the host OS to match the various "optional" 6090interface/behavior strings for the _OSI predefined control method as 6091appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 6092for an example implementation. 6093 6094Restructured and corrected various problems in the exception handling code 6095paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 6096(with assistance from Takayoshi Kochi.) 6097 6098Modified the Linux source converter to ignore quoted string literals while 6099converting identifiers from mixed to lower case. This will correct 6100problems 6101with the disassembler and other areas where such strings must not be 6102modified. 6103 6104The ACPI_FUNCTION_* macros no longer require quotes around the function 6105name. This allows the Linux source converter to convert the names, now 6106that 6107the converter ignores quoted strings. 6108 6109Example Code and Data Size: These are the sizes for the OS-independent 6110acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6111debug version of the code includes the debug output trace mechanism and 6112has 6113a much larger code and data size. 6114 6115 Previous Release: 6116 6117 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 6118 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 6119 Current Release: 6120 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 6121 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 6122 6123 61242) iASL Compiler/Disassembler and Tools: 6125 6126Implemented 3 new warnings for iASL, and implemented multiple warning 6127levels 6128(w2 flag). 6129 61301) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 6131not 6132WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 6133check for the possible timeout, a warning is issued. 6134 61352) Useless operators: If an ASL operator does not specify an optional 6136target 6137operand and it also does not use the function return value from the 6138operator, a warning is issued since the operator effectively does nothing. 6139 61403) Unreferenced objects: If a namespace object is created, but never 6141referenced, a warning is issued. This is a warning level 2 since there are 6142cases where this is ok, such as when a secondary table is loaded that uses 6143the unreferenced objects. Even so, care is taken to only flag objects that 6144don't look like they will ever be used. For example, the reserved methods 6145(starting with an underscore) are usually not referenced because it is 6146expected that the OS will invoke them. 6147 6148---------------------------------------- 614931 March 2006. Summary of changes for version 20060331: 6150 61511) ACPI CA Core Subsystem: 6152 6153Implemented header file support for the following additional ACPI tables: 6154ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 6155support, 6156all current and known ACPI tables are now defined in the ACPICA headers 6157and 6158are available for use by device drivers and other software. 6159 6160Implemented support to allow tables that contain ACPI names with invalid 6161characters to be loaded. Previously, this would cause the table load to 6162fail, but since there are several known cases of such tables on existing 6163machines, this change was made to enable ACPI support for them. Also, this 6164matches the behavior of the Microsoft ACPI implementation. 6165 6166Fixed a couple regressions introduced during the memory optimization in 6167the 616820060317 release. The namespace node definition required additional 6169reorganization and an internal datatype that had been changed to 8-bit was 6170restored to 32-bit. (Valery Podrezov) 6171 6172Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 6173could be passed through to AcpiOsReleaseObject which is unexpected. Such 6174null pointers are now trapped and ignored, matching the behavior of the 6175previous implementation before the deployment of AcpiOsReleaseObject. 6176(Valery Podrezov, Fiodor Suietov) 6177 6178Fixed a memory mapping leak during the deletion of a SystemMemory 6179operation 6180region where a cached memory mapping was not deleted. This became a 6181noticeable problem for operation regions that are defined within 6182frequently 6183used control methods. (Dana Meyers) 6184 6185Reorganized the ACPI table header files into two main files: one for the 6186ACPI tables consumed by the ACPICA core, and another for the miscellaneous 6187ACPI tables that are consumed by the drivers and other software. The 6188various 6189FADT definitions were merged into one common section and three different 6190tables (ACPI 1.0, 1.0+, and 2.0) 6191 6192Example Code and Data Size: These are the sizes for the OS-independent 6193acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6194debug version of the code includes the debug output trace mechanism and 6195has 6196a much larger code and data size. 6197 6198 Previous Release: 6199 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 6200 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 6201 Current Release: 6202 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 6203 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 6204 6205 62062) iASL Compiler/Disassembler and Tools: 6207 6208Disassembler: Implemented support to decode and format all non-AML ACPI 6209tables (tables other than DSDTs and SSDTs.) This includes the new tables 6210added to the ACPICA headers, therefore all current and known ACPI tables 6211are 6212supported. 6213 6214Disassembler: The change to allow ACPI names with invalid characters also 6215enables the disassembly of such tables. Invalid characters within names 6216are 6217changed to '*' to make the name printable; the iASL compiler will still 6218generate an error for such names, however, since this is an invalid ACPI 6219character. 6220 6221Implemented an option for AcpiXtract (-a) to extract all tables found in 6222the 6223input file. The default invocation extracts only the DSDTs and SSDTs. 6224 6225Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 6226makefile for the AcpiXtract utility. 6227 6228---------------------------------------- 622917 March 2006. Summary of changes for version 20060317: 6230 62311) ACPI CA Core Subsystem: 6232 6233Implemented the use of a cache object for all internal namespace nodes. 6234Since there are about 1000 static nodes in a typical system, this will 6235decrease memory use for cache implementations that minimize per-allocation 6236overhead (such as a slab allocator.) 6237 6238Removed the reference count mechanism for internal namespace nodes, since 6239it 6240was deemed unnecessary. This reduces the size of each namespace node by 6241about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 6242and 32 bytes for the 64-bit case. 6243 6244Optimized several internal data structures to reduce object size on 64-bit 6245platforms by packing data within the 64-bit alignment. This includes the 6246frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 6247instances corresponding to the namespace objects. 6248 6249Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 6250and "Windows 2006". 6251 6252Split the allocation tracking mechanism out to a separate file, from 6253utalloc.c to uttrack.c. This mechanism appears to be only useful for 6254application-level code. Kernels may wish to not include uttrack.c in 6255distributions. 6256 6257Removed all remnants of the obsolete ACPI_REPORT_* macros and the 6258associated 6259code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 6260macros.) 6261 6262Code and Data Size: These are the sizes for the acpica.lib produced by the 6263Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 6264ACPI 6265driver or OSPM code. The debug version of the code includes the debug 6266output 6267trace mechanism and has a much larger code and data size. Note that these 6268values will vary depending on the efficiency of the compiler and the 6269compiler options used during generation. 6270 6271 Previous Release: 6272 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 6273 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 6274 Current Release: 6275 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 6276 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 6277 6278 62792) iASL Compiler/Disassembler and Tools: 6280 6281Implemented an ANSI C version of the acpixtract utility. This version will 6282automatically extract the DSDT and all SSDTs from the input acpidump text 6283file and dump the binary output to separate files. It can also display a 6284summary of the input file including the headers for each table found and 6285will extract any single ACPI table, with any signature. (See 6286source/tools/acpixtract) 6287 6288---------------------------------------- 628910 March 2006. Summary of changes for version 20060310: 6290 62911) ACPI CA Core Subsystem: 6292 6293Tagged all external interfaces to the subsystem with the new 6294ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 6295kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 6296macro. The default definition is NULL. 6297 6298Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 6299This allows the host to define this as necessary to simplify kernel 6300integration. The default definition is ACPI_NATIVE_UINT. 6301 6302Fixed two interpreter problems related to error processing, the deletion 6303of 6304objects, and placing invalid pointers onto the internal operator result 6305stack. BZ 6028, 6151 (Valery Podrezov) 6306 6307Increased the reference count threshold where a warning is emitted for 6308large 6309reference counts in order to eliminate unnecessary warnings on systems 6310with 6311large namespaces (especially 64-bit.) Increased the value from 0x400 to 63120x800. 6313 6314Due to universal disagreement as to the meaning of the 'c' in the calloc() 6315function, the ACPI_MEM_CALLOCATE macro has been renamed to 6316ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 6317ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 6318ACPI_FREE. 6319 6320Code and Data Size: These are the sizes for the acpica.lib produced by the 6321Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 6322ACPI 6323driver or OSPM code. The debug version of the code includes the debug 6324output 6325trace mechanism and has a much larger code and data size. Note that these 6326values will vary depending on the efficiency of the compiler and the 6327compiler options used during generation. 6328 6329 Previous Release: 6330 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 6331 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 6332 Current Release: 6333 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 6334 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 6335 6336 63372) iASL Compiler/Disassembler: 6338 6339Disassembler: implemented support for symbolic resource descriptor 6340references. If a CreateXxxxField operator references a fixed offset within 6341a 6342resource descriptor, a name is assigned to the descriptor and the offset 6343is 6344translated to the appropriate resource tag and pathname. The addition of 6345this support brings the disassembled code very close to the original ASL 6346source code and helps eliminate run-time errors when the disassembled code 6347is modified (and recompiled) in such a way as to invalidate the original 6348fixed offsets. 6349 6350Implemented support for a Descriptor Name as the last parameter to the ASL 6351Register() macro. This parameter was inadvertently left out of the ACPI 6352specification, and will be added for ACPI 3.0b. 6353 6354Fixed a problem where the use of the "_OSI" string (versus the full path 6355"\_OSI") caused an internal compiler error. ("No back ptr to op") 6356 6357Fixed a problem with the error message that occurs when an invalid string 6358is 6359used for a _HID object (such as one with an embedded asterisk: 6360"*PNP010A".) 6361The correct message is now displayed. 6362 6363---------------------------------------- 636417 February 2006. Summary of changes for version 20060217: 6365 63661) ACPI CA Core Subsystem: 6367 6368Implemented a change to the IndexField support to match the behavior of 6369the 6370Microsoft AML interpreter. The value written to the Index register is now 6371a 6372byte offset, no longer an index based upon the width of the Data register. 6373This should fix IndexField problems seen on some machines where the Data 6374register is not exactly one byte wide. The ACPI specification will be 6375clarified on this point. 6376 6377Fixed a problem where several resource descriptor types could overrun the 6378internal descriptor buffer due to size miscalculation: VendorShort, 6379VendorLong, and Interrupt. This was noticed on IA64 machines, but could 6380affect all platforms. 6381 6382Fixed a problem where individual resource descriptors were misaligned 6383within 6384the internal buffer, causing alignment faults on IA64 platforms. 6385 6386Code and Data Size: These are the sizes for the acpica.lib produced by the 6387Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 6388ACPI 6389driver or OSPM code. The debug version of the code includes the debug 6390output 6391trace mechanism and has a much larger code and data size. Note that these 6392values will vary depending on the efficiency of the compiler and the 6393compiler options used during generation. 6394 6395 Previous Release: 6396 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 6397 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 6398 Current Release: 6399 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 6400 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 6401 6402 64032) iASL Compiler/Disassembler: 6404 6405Implemented support for new reserved names: _WDG and _WED are Microsoft 6406extensions for Windows Instrumentation Management, _TDL is a new ACPI- 6407defined method (Throttling Depth Limit.) 6408 6409Fixed a problem where a zero-length VendorShort or VendorLong resource 6410descriptor was incorrectly emitted as a descriptor of length one. 6411 6412---------------------------------------- 641310 February 2006. Summary of changes for version 20060210: 6414 64151) ACPI CA Core Subsystem: 6416 6417Removed a couple of extraneous ACPI_ERROR messages that appeared during 6418normal execution. These became apparent after the conversion from 6419ACPI_DEBUG_PRINT. 6420 6421Fixed a problem where the CreateField operator could hang if the BitIndex 6422or 6423NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 6424 6425Fixed a problem where a DeRefOf operation on a buffer object incorrectly 6426failed with an exception. This also fixes a couple of related RefOf and 6427DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 6428 6429Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 6430of 6431AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 6432BZ 64335480) 6434 6435Implemented a memory cleanup at the end of the execution of each iteration 6436of an AML While() loop, preventing the accumulation of outstanding 6437objects. 6438(Valery Podrezov, BZ 5427) 6439 6440Eliminated a chunk of duplicate code in the object resolution code. 6441(Valery 6442Podrezov, BZ 5336) 6443 6444Fixed several warnings during the 64-bit code generation. 6445 6446The AcpiSrc source code conversion tool now inserts one line of whitespace 6447after an if() statement that is followed immediately by a comment, 6448improving 6449readability of the Linux code. 6450 6451Code and Data Size: The current and previous library sizes for the core 6452subsystem are shown below. These are the code and data sizes for the 6453acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6454values do not include any ACPI driver or OSPM code. The debug version of 6455the 6456code includes the debug output trace mechanism and has a much larger code 6457and data size. Note that these values will vary depending on the 6458efficiency 6459of the compiler and the compiler options used during generation. 6460 6461 Previous Release: 6462 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 6463 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 6464 Current Release: 6465 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 6466 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 6467 6468 64692) iASL Compiler/Disassembler: 6470 6471Fixed a problem with the disassembly of a BankField operator with a 6472complex 6473expression for the BankValue parameter. 6474 6475---------------------------------------- 647627 January 2006. Summary of changes for version 20060127: 6477 64781) ACPI CA Core Subsystem: 6479 6480Implemented support in the Resource Manager to allow unresolved namestring 6481references within resource package objects for the _PRT method. This 6482support 6483is in addition to the previously implemented unresolved reference support 6484within the AML parser. If the interpreter slack mode is enabled, these 6485unresolved references will be passed through to the caller as a NULL 6486package 6487entry. 6488 6489Implemented and deployed new macros and functions for error and warning 6490messages across the subsystem. These macros are simpler and generate less 6491code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 6492ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 6493macros remain defined to allow ACPI drivers time to migrate to the new 6494macros. 6495 6496Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 6497Acquire/Release Lock OSL interfaces. 6498 6499Fixed a problem where Alias ASL operators are sometimes not correctly 6500resolved, in both the interpreter and the iASL compiler. 6501 6502Fixed several problems with the implementation of the 6503ConcatenateResTemplate 6504ASL operator. As per the ACPI specification, zero length buffers are now 6505treated as a single EndTag. One-length buffers always cause a fatal 6506exception. Non-zero length buffers that do not end with a full 2-byte 6507EndTag 6508cause a fatal exception. 6509 6510Fixed a possible structure overwrite in the AcpiGetObjectInfo external 6511interface. (With assistance from Thomas Renninger) 6512 6513Code and Data Size: The current and previous library sizes for the core 6514subsystem are shown below. These are the code and data sizes for the 6515acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6516values do not include any ACPI driver or OSPM code. The debug version of 6517the 6518code includes the debug output trace mechanism and has a much larger code 6519and data size. Note that these values will vary depending on the 6520efficiency 6521of the compiler and the compiler options used during generation. 6522 6523 Previous Release: 6524 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 6525 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 6526 Current Release: 6527 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 6528 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 6529 6530 65312) iASL Compiler/Disassembler: 6532 6533Fixed an internal error that was generated for any forward references to 6534ASL 6535Alias objects. 6536 6537---------------------------------------- 653813 January 2006. Summary of changes for version 20060113: 6539 65401) ACPI CA Core Subsystem: 6541 6542Added 2006 copyright to all module headers and signons. This affects 6543virtually every file in the ACPICA core subsystem, iASL compiler, and the 6544utilities. 6545 6546Enhanced the ACPICA error reporting in order to simplify user migration to 6547the non-debug version of ACPICA. Replaced all instances of the 6548ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 6549levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 6550respectively. This preserves all error and warning messages in the non- 6551debug 6552version of the ACPICA code (this has been referred to as the "debug lite" 6553option.) Over 200 cases were converted to create a total of over 380 6554error/warning messages across the ACPICA code. This increases the code and 6555data size of the default non-debug version of the code somewhat (about 655613K), 6557but all error/warning reporting may be disabled if desired (and code 6558eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 6559configuration option. The size of the debug version of ACPICA remains 6560about 6561the same. 6562 6563Fixed a memory leak within the AML Debugger "Set" command. One object was 6564not properly deleted for every successful invocation of the command. 6565 6566Code and Data Size: The current and previous library sizes for the core 6567subsystem are shown below. These are the code and data sizes for the 6568acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6569values do not include any ACPI driver or OSPM code. The debug version of 6570the 6571code includes the debug output trace mechanism and has a much larger code 6572and data size. Note that these values will vary depending on the 6573efficiency 6574of the compiler and the compiler options used during generation. 6575 6576 Previous Release: 6577 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 6578 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 6579 Current Release: 6580 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 6581 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 6582 6583 65842) iASL Compiler/Disassembler: 6585 6586The compiler now officially supports the ACPI 3.0a specification that was 6587released on December 30, 2005. (Specification is available at 6588www.acpi.info) 6589 6590---------------------------------------- 659116 December 2005. Summary of changes for version 20051216: 6592 65931) ACPI CA Core Subsystem: 6594 6595Implemented optional support to allow unresolved names within ASL Package 6596objects. A null object is inserted in the package when a named reference 6597cannot be located in the current namespace. Enabled via the interpreter 6598slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 6599that contain such code. 6600 6601Implemented an optimization to the initialization sequence that can 6602improve 6603boot time. During ACPI device initialization, the _STA method is now run 6604if 6605and only if the _INI method exists. The _STA method is used to determine 6606if 6607the device is present; An _INI can only be run if _STA returns present, 6608but 6609it is a waste of time to run the _STA method if the _INI does not exist. 6610(Prototype and assistance from Dong Wei) 6611 6612Implemented use of the C99 uintptr_t for the pointer casting macros if it 6613is 6614available in the current compiler. Otherwise, the default (void *) cast is 6615used as before. 6616 6617Fixed some possible memory leaks found within the execution path of the 6618Break, Continue, If, and CreateField operators. (Valery Podrezov) 6619 6620Fixed a problem introduced in the 20051202 release where an exception is 6621generated during method execution if a control method attempts to declare 6622another method. 6623 6624Moved resource descriptor string constants that are used by both the AML 6625disassembler and AML debugger to the common utilities directory so that 6626these components are independent. 6627 6628Implemented support in the AcpiExec utility (-e switch) to globally ignore 6629exceptions during control method execution (method is not aborted.) 6630 6631Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 6632generation. 6633 6634Code and Data Size: The current and previous library sizes for the core 6635subsystem are shown below. These are the code and data sizes for the 6636acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6637values do not include any ACPI driver or OSPM code. The debug version of 6638the 6639code includes the debug output trace mechanism and has a much larger code 6640and data size. Note that these values will vary depending on the 6641efficiency 6642of the compiler and the compiler options used during generation. 6643 6644 Previous Release: 6645 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 6646 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 6647 Current Release: 6648 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 6649 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 6650 6651 66522) iASL Compiler/Disassembler: 6653 6654Fixed a problem where a CPU stack overflow fault could occur if a 6655recursive 6656method call was made from within a Return statement. 6657 6658---------------------------------------- 665902 December 2005. Summary of changes for version 20051202: 6660 66611) ACPI CA Core Subsystem: 6662 6663Modified the parsing of control methods to no longer create namespace 6664objects during the first pass of the parse. Objects are now created only 6665during the execute phase, at the moment the namespace creation operator is 6666encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 6667should eliminate ALREADY_EXISTS exceptions seen on some machines where 6668reentrant control methods are protected by an AML mutex. The mutex will 6669now 6670correctly block multiple threads from attempting to create the same object 6671more than once. 6672 6673Increased the number of available Owner Ids for namespace object tracking 6674from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 6675on 6676some machines with a large number of ACPI tables (either static or 6677dynamic). 6678 6679Fixed a problem with the AcpiExec utility where a fault could occur when 6680the 6681-b switch (batch mode) is used. 6682 6683Enhanced the namespace dump routine to output the owner ID for each 6684namespace object. 6685 6686Code and Data Size: The current and previous library sizes for the core 6687subsystem are shown below. These are the code and data sizes for the 6688acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6689values do not include any ACPI driver or OSPM code. The debug version of 6690the 6691code includes the debug output trace mechanism and has a much larger code 6692and data size. Note that these values will vary depending on the 6693efficiency 6694of the compiler and the compiler options used during generation. 6695 6696 Previous Release: 6697 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 6698 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 6699 Current Release: 6700 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 6701 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 6702 6703 67042) iASL Compiler/Disassembler: 6705 6706Fixed a parse error during compilation of certain Switch/Case constructs. 6707To 6708simplify the parse, the grammar now allows for multiple Default statements 6709and this error is now detected and flagged during the analysis phase. 6710 6711Disassembler: The disassembly now includes the contents of the original 6712table header within a comment at the start of the file. This includes the 6713name and version of the original ASL compiler. 6714 6715---------------------------------------- 671617 November 2005. Summary of changes for version 20051117: 6717 67181) ACPI CA Core Subsystem: 6719 6720Fixed a problem in the AML parser where the method thread count could be 6721decremented below zero if any errors occurred during the method parse 6722phase. 6723This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 6724machines. 6725This also fixed a related regression with the mechanism that detects and 6726corrects methods that cannot properly handle reentrancy (related to the 6727deployment of the new OwnerId mechanism.) 6728 6729Eliminated the pre-parsing of control methods (to detect errors) during 6730table load. Related to the problem above, this was causing unwind issues 6731if 6732any errors occurred during the parse, and it seemed to be overkill. A 6733table 6734load should not be aborted if there are problems with any single control 6735method, thus rendering this feature rather pointless. 6736 6737Fixed a problem with the new table-driven resource manager where an 6738internal 6739buffer overflow could occur for small resource templates. 6740 6741Implemented a new external interface, AcpiGetVendorResource. This 6742interface 6743will find and return a vendor-defined resource descriptor within a _CRS or 6744_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 6745Helgaas. 6746 6747Removed the length limit (200) on string objects as per the upcoming ACPI 67483.0A specification. This affects the following areas of the interpreter: 67491) 6750any implicit conversion of a Buffer to a String, 2) a String object result 6751of the ASL Concatentate operator, 3) the String object result of the ASL 6752ToString operator. 6753 6754Fixed a problem in the Windows OS interface layer (OSL) where a 6755WAIT_FOREVER 6756on a semaphore object would incorrectly timeout. This allows the 6757multithreading features of the AcpiExec utility to work properly under 6758Windows. 6759 6760Updated the Linux makefiles for the iASL compiler and AcpiExec to include 6761the recently added file named "utresrc.c". 6762 6763Code and Data Size: The current and previous library sizes for the core 6764subsystem are shown below. These are the code and data sizes for the 6765acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6766values do not include any ACPI driver or OSPM code. The debug version of 6767the 6768code includes the debug output trace mechanism and has a much larger code 6769and data size. Note that these values will vary depending on the 6770efficiency 6771of the compiler and the compiler options used during generation. 6772 6773 Previous Release: 6774 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 6775 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 6776 Current Release: 6777 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 6778 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 6779 6780 67812) iASL Compiler/Disassembler: 6782 6783Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 6784specification. For the iASL compiler, this means that string literals 6785within 6786the source ASL can be of any length. 6787 6788Enhanced the listing output to dump the AML code for resource descriptors 6789immediately after the ASL code for each descriptor, instead of in a block 6790at 6791the end of the entire resource template. 6792 6793Enhanced the compiler debug output to dump the entire original parse tree 6794constructed during the parse phase, before any transforms are applied to 6795the 6796tree. The transformed tree is dumped also. 6797 6798---------------------------------------- 679902 November 2005. Summary of changes for version 20051102: 6800 68011) ACPI CA Core Subsystem: 6802 6803Modified the subsystem initialization sequence to improve GPE support. The 6804GPE initialization has been split into two parts in order to defer 6805execution 6806of the _PRW methods (Power Resources for Wake) until after the hardware is 6807fully initialized and the SCI handler is installed. This allows the _PRW 6808methods to access fields protected by the Global Lock. This will fix 6809systems 6810where a NO_GLOBAL_LOCK exception has been seen during initialization. 6811 6812Converted the ACPI internal object disassemble and display code within the 6813AML debugger to fully table-driven operation, reducing code size and 6814increasing maintainability. 6815 6816Fixed a regression with the ConcatenateResTemplate() ASL operator 6817introduced 6818in the 20051021 release. 6819 6820Implemented support for "local" internal ACPI object types within the 6821debugger "Object" command and the AcpiWalkNamespace external interfaces. 6822These local types include RegionFields, BankFields, IndexFields, Alias, 6823and 6824reference objects. 6825 6826Moved common AML resource handling code into a new file, "utresrc.c". This 6827code is shared by both the Resource Manager and the AML Debugger. 6828 6829Code and Data Size: The current and previous library sizes for the core 6830subsystem are shown below. These are the code and data sizes for the 6831acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6832values do not include any ACPI driver or OSPM code. The debug version of 6833the 6834code includes the debug output trace mechanism and has a much larger code 6835and data size. Note that these values will vary depending on the 6836efficiency 6837of the compiler and the compiler options used during generation. 6838 6839 Previous Release: 6840 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 6841 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 6842 Current Release: 6843 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 6844 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 6845 6846 68472) iASL Compiler/Disassembler: 6848 6849Fixed a problem with very large initializer lists (more than 4000 6850elements) 6851for both Buffer and Package objects where the parse stack could overflow. 6852 6853Enhanced the pre-compile source code scan for non-ASCII characters to 6854ignore 6855characters within comment fields. The scan is now always performed and is 6856no 6857longer optional, detecting invalid characters within a source file 6858immediately rather than during the parse phase or later. 6859 6860Enhanced the ASL grammar definition to force early reductions on all list- 6861style grammar elements so that the overall parse stack usage is greatly 6862reduced. This should improve performance and reduce the possibility of 6863parse 6864stack overflow. 6865 6866Eliminated all reduce/reduce conflicts in the iASL parser generation. 6867Also, 6868with the addition of a %expected statement, the compiler generates from 6869source with no warnings. 6870 6871Fixed a possible segment fault in the disassembler if the input filename 6872does not contain a "dot" extension (Thomas Renninger). 6873 6874---------------------------------------- 687521 October 2005. Summary of changes for version 20051021: 6876 68771) ACPI CA Core Subsystem: 6878 6879Implemented support for the EM64T and other x86-64 processors. This 6880essentially entails recognizing that these processors support non-aligned 6881memory transfers. Previously, all 64-bit processors were assumed to lack 6882hardware support for non-aligned transfers. 6883 6884Completed conversion of the Resource Manager to nearly full table-driven 6885operation. Specifically, the resource conversion code (convert AML to 6886internal format and the reverse) and the debug code to dump internal 6887resource descriptors are fully table-driven, reducing code and data size 6888and 6889improving maintainability. 6890 6891The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 6892on 64-bit processors instead of a fixed 32-bit word. (With assistance from 6893Alexey Starikovskiy) 6894 6895Implemented support within the resource conversion code for the Type- 6896Specific byte within the various ACPI 3.0 *WordSpace macros. 6897 6898Fixed some issues within the resource conversion code for the type- 6899specific 6900flags for both Memory and I/O address resource descriptors. For Memory, 6901implemented support for the MTP and TTP flags. For I/O, split the TRS and 6902TTP flags into two separate fields. 6903 6904Code and Data Size: The current and previous library sizes for the core 6905subsystem are shown below. These are the code and data sizes for the 6906acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6907values do not include any ACPI driver or OSPM code. The debug version of 6908the 6909code includes the debug output trace mechanism and has a much larger code 6910and data size. Note that these values will vary depending on the 6911efficiency 6912of the compiler and the compiler options used during generation. 6913 6914 Previous Release: 6915 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 6916 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 6917 Current Release: 6918 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 6919 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 6920 6921 6922 69232) iASL Compiler/Disassembler: 6924 6925Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 6926corresponding ResourceSource string was not also present in a resource 6927descriptor declaration. This restriction caused problems with existing 6928AML/ASL code that includes the Index byte without the string. When such 6929AML 6930was disassembled, it could not be compiled without modification. Further, 6931the modified code created a resource template with a different size than 6932the 6933original, breaking code that used fixed offsets into the resource template 6934buffer. 6935 6936Removed a recent feature of the disassembler to ignore a lone 6937ResourceIndex 6938byte. This byte is now emitted if present so that the exact AML can be 6939reproduced when the disassembled code is recompiled. 6940 6941Improved comments and text alignment for the resource descriptor code 6942emitted by the disassembler. 6943 6944Implemented disassembler support for the ACPI 3.0 AccessSize field within 6945a 6946Register() resource descriptor. 6947 6948---------------------------------------- 694930 September 2005. Summary of changes for version 20050930: 6950 69511) ACPI CA Core Subsystem: 6952 6953Completed a major overhaul of the Resource Manager code - specifically, 6954optimizations in the area of the AML/internal resource conversion code. 6955The 6956code has been optimized to simplify and eliminate duplicated code, CPU 6957stack 6958use has been decreased by optimizing function parameters and local 6959variables, and naming conventions across the manager have been 6960standardized 6961for clarity and ease of maintenance (this includes function, parameter, 6962variable, and struct/typedef names.) The update may force changes in some 6963driver code, depending on how resources are handled by the host OS. 6964 6965All Resource Manager dispatch and information tables have been moved to a 6966single location for clarity and ease of maintenance. One new file was 6967created, named "rsinfo.c". 6968 6969The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 6970guarantee that the argument is not evaluated twice, making them less prone 6971to macro side-effects. However, since there exists the possibility of 6972additional stack use if a particular compiler cannot optimize them (such 6973as 6974in the debug generation case), the original macros are optionally 6975available. 6976Note that some invocations of the return_VALUE macro may now cause size 6977mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 6978to 6979eliminate these. (From Randy Dunlap) 6980 6981Implemented a new mechanism to enable debug tracing for individual control 6982methods. A new external interface, AcpiDebugTrace, is provided to enable 6983this mechanism. The intent is to allow the host OS to easily enable and 6984disable tracing for problematic control methods. This interface can be 6985easily exposed to a user or debugger interface if desired. See the file 6986psxface.c for details. 6987 6988AcpiUtCallocate will now return a valid pointer if a length of zero is 6989specified - a length of one is used and a warning is issued. This matches 6990the behavior of AcpiUtAllocate. 6991 6992Code and Data Size: The current and previous library sizes for the core 6993subsystem are shown below. These are the code and data sizes for the 6994acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 6995values do not include any ACPI driver or OSPM code. The debug version of 6996the 6997code includes the debug output trace mechanism and has a much larger code 6998and data size. Note that these values will vary depending on the 6999efficiency 7000of the compiler and the compiler options used during generation. 7001 7002 Previous Release: 7003 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 7004 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 7005 Current Release: 7006 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 7007 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 7008 7009 70102) iASL Compiler/Disassembler: 7011 7012A remark is issued if the effective compile-time length of a package or 7013buffer is zero. Previously, this was a warning. 7014 7015---------------------------------------- 701616 September 2005. Summary of changes for version 20050916: 7017 70181) ACPI CA Core Subsystem: 7019 7020Fixed a problem within the Resource Manager where support for the Generic 7021Register descriptor was not fully implemented. This descriptor is now 7022fully 7023recognized, parsed, disassembled, and displayed. 7024 7025Completely restructured the Resource Manager code to utilize table-driven 7026dispatch and lookup, eliminating many of the large switch() statements. 7027This 7028reduces overall subsystem code size and code complexity. Affects the 7029resource parsing and construction, disassembly, and debug dump output. 7030 7031Cleaned up and restructured the debug dump output for all resource 7032descriptors. Improved readability of the output and reduced code size. 7033 7034Fixed a problem where changes to internal data structures caused the 7035optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 7036 7037Code and Data Size: The current and previous library sizes for the core 7038subsystem are shown below. These are the code and data sizes for the 7039acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 7040values do not include any ACPI driver or OSPM code. The debug version of 7041the 7042code includes the debug output trace mechanism and has a much larger code 7043and data size. Note that these values will vary depending on the 7044efficiency 7045of the compiler and the compiler options used during generation. 7046 7047 Previous Release: 7048 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 7049 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 7050 Current Release: 7051 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 7052 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 7053 7054 70552) iASL Compiler/Disassembler: 7056 7057Updated the disassembler to automatically insert an EndDependentFn() macro 7058into the ASL stream if this macro is missing in the original AML code, 7059simplifying compilation of the resulting ASL module. 7060 7061Fixed a problem in the disassembler where a disassembled ResourceSource 7062string (within a large resource descriptor) was not surrounded by quotes 7063and 7064not followed by a comma, causing errors when the resulting ASL module was 7065compiled. Also, escape sequences within a ResourceSource string are now 7066handled correctly (especially "\\") 7067 7068---------------------------------------- 706902 September 2005. Summary of changes for version 20050902: 7070 70711) ACPI CA Core Subsystem: 7072 7073Fixed a problem with the internal Owner ID allocation and deallocation 7074mechanisms for control method execution and recursive method invocation. 7075This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 7076messages seen on some systems. Recursive method invocation depth is 7077currently limited to 255. (Alexey Starikovskiy) 7078 7079Completely eliminated all vestiges of support for the "module-level 7080executable code" until this support is fully implemented and debugged. 7081This 7082should eliminate the NO_RETURN_VALUE exceptions seen during table load on 7083some systems that invoke this support. 7084 7085Fixed a problem within the resource manager code where the transaction 7086flags 7087for a 64-bit address descriptor were handled incorrectly in the type- 7088specific flag byte. 7089 7090Consolidated duplicate code within the address descriptor resource manager 7091code, reducing overall subsystem code size. 7092 7093Fixed a fault when using the AML debugger "disassemble" command to 7094disassemble individual control methods. 7095 7096Removed references to the "release_current" directory within the Unix 7097release package. 7098 7099Code and Data Size: The current and previous core subsystem library sizes 7100are shown below. These are the code and data sizes for the acpica.lib 7101produced by the Microsoft Visual C++ 6.0 compiler. These values do not 7102include any ACPI driver or OSPM code. The debug version of the code 7103includes 7104the debug output trace mechanism and has a much larger code and data size. 7105Note that these values will vary depending on the efficiency of the 7106compiler 7107and the compiler options used during generation. 7108 7109 Previous Release: 7110 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 7111 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 7112 Current Release: 7113 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 7114 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 7115 7116 71172) iASL Compiler/Disassembler: 7118 7119Implemented an error check for illegal duplicate values in the interrupt 7120and 7121dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 7122Interrupt(). 7123 7124Implemented error checking for the Irq() and IrqNoFlags() macros to detect 7125too many values in the interrupt list (16 max) and invalid values in the 7126list (range 0 - 15) 7127 7128The maximum length string literal within an ASL file is now restricted to 7129200 characters as per the ACPI specification. 7130 7131Fixed a fault when using the -ln option (generate namespace listing). 7132 7133Implemented an error check to determine if a DescriptorName within a 7134resource descriptor has already been used within the current scope. 7135 7136---------------------------------------- 713715 August 2005. Summary of changes for version 20050815: 7138 71391) ACPI CA Core Subsystem: 7140 7141Implemented a full bytewise compare to determine if a table load request 7142is 7143attempting to load a duplicate table. The compare is performed if the 7144table 7145signatures and table lengths match. This will allow different tables with 7146the same OEM Table ID and revision to be loaded - probably against the 7147ACPI 7148specification, but discovered in the field nonetheless. 7149 7150Added the changes.txt logfile to each of the zipped release packages. 7151 7152Code and Data Size: Current and previous core subsystem library sizes are 7153shown below. These are the code and data sizes for the acpica.lib produced 7154by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7155any ACPI driver or OSPM code. The debug version of the code includes the 7156debug output trace mechanism and has a much larger code and data size. 7157Note 7158that these values will vary depending on the efficiency of the compiler 7159and 7160the compiler options used during generation. 7161 7162 Previous Release: 7163 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 7164 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 7165 Current Release: 7166 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 7167 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 7168 7169 71702) iASL Compiler/Disassembler: 7171 7172Fixed a problem where incorrect AML code could be generated for Package 7173objects if optimization is disabled (via the -oa switch). 7174 7175Fixed a problem with where incorrect AML code is generated for variable- 7176length packages when the package length is not specified and the number of 7177initializer values is greater than 255. 7178 7179 7180---------------------------------------- 718129 July 2005. Summary of changes for version 20050729: 7182 71831) ACPI CA Core Subsystem: 7184 7185Implemented support to ignore an attempt to install/load a particular ACPI 7186table more than once. Apparently there exists BIOS code that repeatedly 7187attempts to load the same SSDT upon certain events. With assistance from 7188Venkatesh Pallipadi. 7189 7190Restructured the main interface to the AML parser in order to correctly 7191handle all exceptional conditions. This will prevent leakage of the 7192OwnerId 7193resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 7194some 7195machines. With assistance from Alexey Starikovskiy. 7196 7197Support for "module level code" has been disabled in this version due to a 7198number of issues that have appeared on various machines. The support can 7199be 7200enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 7201compilation. When the issues are fully resolved, the code will be enabled 7202by 7203default again. 7204 7205Modified the internal functions for debug print support to define the 7206FunctionName parameter as a (const char *) for compatibility with compiler 7207built-in macros such as __FUNCTION__, etc. 7208 7209Linted the entire ACPICA source tree for both 32-bit and 64-bit. 7210 7211Implemented support to display an object count summary for the AML 7212Debugger 7213commands Object and Methods. 7214 7215Code and Data Size: Current and previous core subsystem library sizes are 7216shown below. These are the code and data sizes for the acpica.lib produced 7217by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7218any ACPI driver or OSPM code. The debug version of the code includes the 7219debug output trace mechanism and has a much larger code and data size. 7220Note 7221that these values will vary depending on the efficiency of the compiler 7222and 7223the compiler options used during generation. 7224 7225 Previous Release: 7226 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 7227 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 7228 Current Release: 7229 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 7230 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 7231 7232 72332) iASL Compiler/Disassembler: 7234 7235Fixed a regression that appeared in the 20050708 version of the compiler 7236where an error message was inadvertently emitted for invocations of the 7237_OSI 7238reserved control method. 7239 7240---------------------------------------- 724108 July 2005. Summary of changes for version 20050708: 7242 72431) ACPI CA Core Subsystem: 7244 7245The use of the CPU stack in the debug version of the subsystem has been 7246considerably reduced. Previously, a debug structure was declared in every 7247function that used the debug macros. This structure has been removed in 7248favor of declaring the individual elements as parameters to the debug 7249functions. This reduces the cumulative stack use during nested execution 7250of 7251ACPI function calls at the cost of a small increase in the code size of 7252the 7253debug version of the subsystem. With assistance from Alexey Starikovskiy 7254and 7255Len Brown. 7256 7257Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 7258headers to define a macro that will return the current function name at 7259runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 7260by 7261the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 7262compiler-dependent header, the function name is saved on the CPU stack 7263(one 7264pointer per function.) This mechanism is used because apparently there 7265exists no standard ANSI-C defined macro that that returns the function 7266name. 7267 7268Redesigned and reimplemented the "Owner ID" mechanism used to track 7269namespace objects created/deleted by ACPI tables and control method 7270execution. A bitmap is now used to allocate and free the IDs, thus solving 7271the wraparound problem present in the previous implementation. The size of 7272the namespace node descriptor was reduced by 2 bytes as a result (Alexey 7273Starikovskiy). 7274 7275Removed the UINT32_BIT and UINT16_BIT types that were used for the 7276bitfield 7277flag definitions within the headers for the predefined ACPI tables. These 7278have been replaced by UINT8_BIT in order to increase the code portability 7279of 7280the subsystem. If the use of UINT8 remains a problem, we may be forced to 7281eliminate bitfields entirely because of a lack of portability. 7282 7283Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 7284This 7285is a frequently used function and this improvement increases the 7286performance 7287of the entire subsystem (Alexey Starikovskiy). 7288 7289Fixed several possible memory leaks and the inverse - premature object 7290deletion (Alexey Starikovskiy). 7291 7292Code and Data Size: Current and previous core subsystem library sizes are 7293shown below. These are the code and data sizes for the acpica.lib produced 7294by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7295any ACPI driver or OSPM code. The debug version of the code includes the 7296debug output trace mechanism and has a much larger code and data size. 7297Note 7298that these values will vary depending on the efficiency of the compiler 7299and 7300the compiler options used during generation. 7301 7302 Previous Release: 7303 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 7304 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 7305 Current Release: 7306 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 7307 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 7308 7309---------------------------------------- 731024 June 2005. Summary of changes for version 20050624: 7311 73121) ACPI CA Core Subsystem: 7313 7314Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 7315the host-defined cache object. This allows the OSL implementation to 7316define 7317and type this object in any manner desired, simplifying the OSL 7318implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 7319Linux, and should be defined in the OS-specific header file for other 7320operating systems as required. 7321 7322Changed the interface to AcpiOsAcquireObject to directly return the 7323requested object as the function return (instead of ACPI_STATUS.) This 7324change was made for performance reasons, since this is the purpose of the 7325interface in the first place. AcpiOsAcquireObject is now similar to the 7326AcpiOsAllocate interface. 7327 7328Implemented a new AML debugger command named Businfo. This command 7329displays 7330information about all devices that have an associate _PRT object. The 7331_ADR, 7332_HID, _UID, and _CID are displayed for these devices. 7333 7334Modified the initialization sequence in AcpiInitializeSubsystem to call 7335the 7336OSL interface AcpiOslInitialize first, before any local initialization. 7337This 7338change was required because the global initialization now calls OSL 7339interfaces. 7340 7341Enhanced the Dump command to display the entire contents of Package 7342objects 7343(including all sub-objects and their values.) 7344 7345Restructured the code base to split some files because of size and/or 7346because the code logically belonged in a separate file. New files are 7347listed 7348below. All makefiles and project files included in the ACPI CA release 7349have 7350been updated. 7351 utilities/utcache.c /* Local cache interfaces */ 7352 utilities/utmutex.c /* Local mutex support */ 7353 utilities/utstate.c /* State object support */ 7354 interpreter/parser/psloop.c /* Main AML parse loop */ 7355 7356Code and Data Size: Current and previous core subsystem library sizes are 7357shown below. These are the code and data sizes for the acpica.lib produced 7358by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7359any ACPI driver or OSPM code. The debug version of the code includes the 7360debug output trace mechanism and has a much larger code and data size. 7361Note 7362that these values will vary depending on the efficiency of the compiler 7363and 7364the compiler options used during generation. 7365 7366 Previous Release: 7367 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 7368 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 7369 Current Release: 7370 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 7371 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 7372 7373 73742) iASL Compiler/Disassembler: 7375 7376Fixed a regression introduced in version 20050513 where the use of a 7377Package 7378object within a Case() statement caused a compile time exception. The 7379original behavior has been restored (a Match() operator is emitted.) 7380 7381---------------------------------------- 738217 June 2005. Summary of changes for version 20050617: 7383 73841) ACPI CA Core Subsystem: 7385 7386Moved the object cache operations into the OS interface layer (OSL) to 7387allow 7388the host OS to handle these operations if desired (for example, the Linux 7389OSL will invoke the slab allocator). This support is optional; the compile 7390time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 7391code in the ACPI CA core. The new OSL interfaces are shown below. See 7392utalloc.c for an example implementation, and acpiosxf.h for the exact 7393interface definitions. With assistance from Alexey Starikovskiy. 7394 AcpiOsCreateCache 7395 AcpiOsDeleteCache 7396 AcpiOsPurgeCache 7397 AcpiOsAcquireObject 7398 AcpiOsReleaseObject 7399 7400Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 7401return 7402and restore a flags parameter. This fits better with many OS lock models. 7403Note: the current execution state (interrupt handler or not) is no longer 7404passed to these interfaces. If necessary, the OSL must determine this 7405state 7406by itself, a simple and fast operation. With assistance from Alexey 7407Starikovskiy. 7408 7409Fixed a problem in the ACPI table handling where a valid XSDT was assumed 7410present if the revision of the RSDP was 2 or greater. According to the 7411ACPI 7412specification, the XSDT is optional in all cases, and the table manager 7413therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 7414Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 7415only the RSDT. 7416 7417Fixed an interpreter problem with the Mid() operator in the case of an 7418input 7419string where the resulting output string is of zero length. It now 7420correctly 7421returns a valid, null terminated string object instead of a string object 7422with a null pointer. 7423 7424Fixed a problem with the control method argument handling to allow a store 7425to an Arg object that already contains an object of type Device. The 7426Device 7427object is now correctly overwritten. Previously, an error was returned. 7428 7429 7430Enhanced the debugger Find command to emit object values in addition to 7431the 7432found object pathnames. The output format is the same as the dump 7433namespace 7434command. 7435 7436Enhanced the debugger Set command. It now has the ability to set the value 7437of any Named integer object in the namespace (Previously, only method 7438locals 7439and args could be set.) 7440 7441Code and Data Size: Current and previous core subsystem library sizes are 7442shown below. These are the code and data sizes for the acpica.lib produced 7443by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7444any ACPI driver or OSPM code. The debug version of the code includes the 7445debug output trace mechanism and has a much larger code and data size. 7446Note 7447that these values will vary depending on the efficiency of the compiler 7448and 7449the compiler options used during generation. 7450 7451 Previous Release: 7452 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 7453 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 7454 Current Release: 7455 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 7456 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 7457 7458 74592) iASL Compiler/Disassembler: 7460 7461Fixed a regression in the disassembler where if/else/while constructs were 7462output incorrectly. This problem was introduced in the previous release 7463(20050526). This problem also affected the single-step disassembly in the 7464debugger. 7465 7466Fixed a problem where compiling the reserved _OSI method would randomly 7467(but 7468rarely) produce compile errors. 7469 7470Enhanced the disassembler to emit compilable code in the face of incorrect 7471AML resource descriptors. If the optional ResourceSourceIndex is present, 7472but the ResourceSource is not, do not emit the ResourceSourceIndex in the 7473disassembly. Otherwise, the resulting code cannot be compiled without 7474errors. 7475 7476---------------------------------------- 747726 May 2005. Summary of changes for version 20050526: 7478 74791) ACPI CA Core Subsystem: 7480 7481Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 7482the module level (not within a control method.) These opcodes are executed 7483exactly once at the time the table is loaded. This type of code was legal 7484up 7485until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 7486in 7487order to provide backwards compatibility with earlier BIOS 7488implementations. 7489This eliminates the "Encountered executable code at module level" warning 7490that was previously generated upon detection of such code. 7491 7492Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 7493inadvertently be generated during the lookup of namespace objects in the 7494second pass parse of ACPI tables and control methods. It appears that this 7495problem could occur during the resolution of forward references to 7496namespace 7497objects. 7498 7499Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 7500corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 7501allows the deadlock detection debug code to be compiled out in the normal 7502case, improving mutex performance (and overall subsystem performance) 7503considerably. 7504 7505Implemented a handful of miscellaneous fixes for possible memory leaks on 7506error conditions and error handling control paths. These fixes were 7507suggested by FreeBSD and the Coverity Prevent source code analysis tool. 7508 7509Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 7510to prevent a fault in this error case. 7511 7512Code and Data Size: Current and previous core subsystem library sizes are 7513shown below. These are the code and data sizes for the acpica.lib produced 7514by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7515any ACPI driver or OSPM code. The debug version of the code includes the 7516debug output trace mechanism and has a much larger code and data size. 7517Note 7518that these values will vary depending on the efficiency of the compiler 7519and 7520the compiler options used during generation. 7521 7522 Previous Release: 7523 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 7524 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 7525 Current Release: 7526 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 7527 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 7528 7529 75302) iASL Compiler/Disassembler: 7531 7532Implemented support to allow Type 1 and Type 2 ASL operators to appear at 7533the module level (not within a control method.) These operators will be 7534executed once at the time the table is loaded. This type of code was legal 7535up until the release of ACPI 2.0B (2002) and is now supported by the iASL 7536compiler in order to provide backwards compatibility with earlier BIOS ASL 7537code. 7538 7539The ACPI integer width (specified via the table revision ID or the -r 7540override, 32 or 64 bits) is now used internally during compile-time 7541constant 7542folding to ensure that constants are truncated to 32 bits if necessary. 7543Previously, the revision ID value was only emitted in the AML table 7544header. 7545 7546An error message is now generated for the Mutex and Method operators if 7547the 7548SyncLevel parameter is outside the legal range of 0 through 15. 7549 7550Fixed a problem with the Method operator ParameterTypes list handling 7551(ACPI 75523.0). Previously, more than 2 types or 2 arguments generated a syntax 7553error. 7554The actual underlying implementation of method argument typechecking is 7555still under development, however. 7556 7557---------------------------------------- 755813 May 2005. Summary of changes for version 20050513: 7559 75601) ACPI CA Core Subsystem: 7561 7562Implemented support for PCI Express root bridges -- added support for 7563device 7564PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 7565 7566The interpreter now automatically truncates incoming 64-bit constants to 756732 7568bits if currently executing out of a 32-bit ACPI table (Revision < 2). 7569This 7570also affects the iASL compiler constant folding. (Note: as per below, the 7571iASL compiler no longer allows 64-bit constants within 32-bit tables.) 7572 7573Fixed a problem where string and buffer objects with "static" pointers 7574(pointers to initialization data within an ACPI table) were not handled 7575consistently. The internal object copy operation now always copies the 7576data 7577to a newly allocated buffer, regardless of whether the source object is 7578static or not. 7579 7580Fixed a problem with the FromBCD operator where an implicit result 7581conversion was improperly performed while storing the result to the target 7582operand. Since this is an "explicit conversion" operator, the implicit 7583conversion should never be performed on the output. 7584 7585Fixed a problem with the CopyObject operator where a copy to an existing 7586named object did not always completely overwrite the existing object 7587stored 7588at name. Specifically, a buffer-to-buffer copy did not delete the existing 7589buffer. 7590 7591Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 7592structs for consistency. 7593 7594Code and Data Size: Current and previous core subsystem library sizes are 7595shown below. These are the code and data sizes for the acpica.lib produced 7596by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7597any ACPI driver or OSPM code. The debug version of the code includes the 7598debug output trace mechanism and has a much larger code and data size. 7599Note 7600that these values will vary depending on the efficiency of the compiler 7601and 7602the compiler options used during generation. 7603 7604 Previous Release: 7605 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 7606 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 7607 Current Release: (Same sizes) 7608 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 7609 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 7610 7611 76122) iASL Compiler/Disassembler: 7613 7614The compiler now emits a warning if an attempt is made to generate a 64- 7615bit 7616integer constant from within a 32-bit ACPI table (Revision < 2). The 7617integer 7618is truncated to 32 bits. 7619 7620Fixed a problem with large package objects: if the static length of the 7621package is greater than 255, the "variable length package" opcode is 7622emitted. Previously, this caused an error. This requires an update to the 7623ACPI spec, since it currently (incorrectly) states that packages larger 7624than 7625255 elements are not allowed. 7626 7627The disassembler now correctly handles variable length packages and 7628packages 7629larger than 255 elements. 7630 7631---------------------------------------- 763208 April 2005. Summary of changes for version 20050408: 7633 76341) ACPI CA Core Subsystem: 7635 7636Fixed three cases in the interpreter where an "index" argument to an ASL 7637function was still (internally) 32 bits instead of the required 64 bits. 7638This was the Index argument to the Index, Mid, and Match operators. 7639 7640The "strupr" function is now permanently local (AcpiUtStrupr), since this 7641is 7642not a POSIX-defined function and not present in most kernel-level C 7643libraries. All references to the C library strupr function have been 7644removed 7645from the headers. 7646 7647Completed the deployment of static functions/prototypes. All prototypes 7648with 7649the static attribute have been moved from the headers to the owning C 7650file. 7651 7652Implemented an extract option (-e) for the AcpiBin utility (AML binary 7653utility). This option allows the utility to extract individual ACPI tables 7654from the output of AcpiDmp. It provides the same functionality of the 7655acpixtract.pl perl script without the worry of setting the correct perl 7656options. AcpiBin runs on Windows and has not yet been generated/validated 7657in 7658the Linux/Unix environment (but should be soon). 7659 7660Updated and fixed the table dump option for AcpiBin (-d). This option 7661converts a single ACPI table to a hex/ascii file, similar to the output of 7662AcpiDmp. 7663 7664Code and Data Size: Current and previous core subsystem library sizes are 7665shown below. These are the code and data sizes for the acpica.lib produced 7666by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7667any ACPI driver or OSPM code. The debug version of the code includes the 7668debug output trace mechanism and has a much larger code and data size. 7669Note 7670that these values will vary depending on the efficiency of the compiler 7671and 7672the compiler options used during generation. 7673 7674 Previous Release: 7675 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 7676 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 7677 Current Release: 7678 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 7679 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 7680 7681 76822) iASL Compiler/Disassembler: 7683 7684Disassembler fix: Added a check to ensure that the table length found in 7685the 7686ACPI table header within the input file is not longer than the actual 7687input 7688file size. This indicates some kind of file or table corruption. 7689 7690---------------------------------------- 769129 March 2005. Summary of changes for version 20050329: 7692 76931) ACPI CA Core Subsystem: 7694 7695An error is now generated if an attempt is made to create a Buffer Field 7696of 7697length zero (A CreateField with a length operand of zero.) 7698 7699The interpreter now issues a warning whenever executable code at the 7700module 7701level is detected during ACPI table load. This will give some idea of the 7702prevalence of this type of code. 7703 7704Implemented support for references to named objects (other than control 7705methods) within package objects. 7706 7707Enhanced package object output for the debug object. Package objects are 7708now 7709completely dumped, showing all elements. 7710 7711Enhanced miscellaneous object output for the debug object. Any object can 7712now be written to the debug object (for example, a device object can be 7713written, and the type of the object will be displayed.) 7714 7715The "static" qualifier has been added to all local functions across both 7716the 7717core subsystem and the iASL compiler. 7718 7719The number of "long" lines (> 80 chars) within the source has been 7720significantly reduced, by about 1/3. 7721 7722Cleaned up all header files to ensure that all CA/iASL functions are 7723prototyped (even static functions) and the formatting is consistent. 7724 7725Two new header files have been added, acopcode.h and acnames.h. 7726 7727Removed several obsolete functions that were no longer used. 7728 7729Code and Data Size: Current and previous core subsystem library sizes are 7730shown below. These are the code and data sizes for the acpica.lib produced 7731by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7732any ACPI driver or OSPM code. The debug version of the code includes the 7733debug output trace mechanism and has a much larger code and data size. 7734Note 7735that these values will vary depending on the efficiency of the compiler 7736and 7737the compiler options used during generation. 7738 7739 Previous Release: 7740 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7741 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 7742 Current Release: 7743 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 7744 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 7745 7746 7747 77482) iASL Compiler/Disassembler: 7749 7750Fixed a problem with the resource descriptor generation/support. For the 7751ResourceSourceIndex and the ResourceSource fields, both must be present, 7752or 7753both must be not present - can't have one without the other. 7754 7755The compiler now returns non-zero from the main procedure if any errors 7756have 7757occurred during the compilation. 7758 7759 7760---------------------------------------- 776109 March 2005. Summary of changes for version 20050309: 7762 77631) ACPI CA Core Subsystem: 7764 7765The string-to-buffer implicit conversion code has been modified again 7766after 7767a change to the ACPI specification. In order to match the behavior of the 7768other major ACPI implementation, the target buffer is no longer truncated 7769if 7770the source string is smaller than an existing target buffer. This change 7771requires an update to the ACPI spec, and should eliminate the recent 7772AE_AML_BUFFER_LIMIT issues. 7773 7774The "implicit return" support was rewritten to a new algorithm that solves 7775the general case. Rather than attempt to determine when a method is about 7776to 7777exit, the result of every ASL operator is saved momentarily until the very 7778next ASL operator is executed. Therefore, no matter how the method exits, 7779there will always be a saved implicit return value. This feature is only 7780enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 7781AE_AML_NO_RETURN_VALUE errors when enabled. 7782 7783Implemented implicit conversion support for the predicate (operand) of the 7784If, Else, and While operators. String and Buffer arguments are 7785automatically 7786converted to Integers. 7787 7788Changed the string-to-integer conversion behavior to match the new ACPI 7789errata: "If no integer object exists, a new integer is created. The ASCII 7790string is interpreted as a hexadecimal constant. Each string character is 7791interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 7792with the first character as the most significant digit, and ending with 7793the 7794first non-hexadecimal character or end-of-string." This means that the 7795first 7796non-hex character terminates the conversion and this is the code that was 7797changed. 7798 7799Fixed a problem where the ObjectType operator would fail (fault) when used 7800on an Index of a Package which pointed to a null package element. The 7801operator now properly returns zero (Uninitialized) in this case. 7802 7803Fixed a problem where the While operator used excessive memory by not 7804properly popping the result stack during execution. There was no memory 7805leak 7806after execution, however. (Code provided by Valery Podrezov.) 7807 7808Fixed a problem where references to control methods within Package objects 7809caused the method to be invoked, instead of producing a reference object 7810pointing to the method. 7811 7812Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 7813improve performance and reduce code size. (Code provided by Alexey 7814Starikovskiy.) 7815 7816Code and Data Size: Current and previous core subsystem library sizes are 7817shown below. These are the code and data sizes for the acpica.lib produced 7818by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7819any ACPI driver or OSPM code. The debug version of the code includes the 7820debug output trace mechanism and has a much larger code and data size. 7821Note 7822that these values will vary depending on the efficiency of the compiler 7823and 7824the compiler options used during generation. 7825 7826 Previous Release: 7827 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7828 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 7829 Current Release: 7830 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7831 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 7832 7833 78342) iASL Compiler/Disassembler: 7835 7836Fixed a problem with the Return operator with no arguments. Since the AML 7837grammar for the byte encoding requires an operand for the Return opcode, 7838the 7839compiler now emits a Return(Zero) for this case. An ACPI specification 7840update has been written for this case. 7841 7842For tables other than the DSDT, namepath optimization is automatically 7843disabled. This is because SSDTs can be loaded anywhere in the namespace, 7844the 7845compiler has no knowledge of where, and thus cannot optimize namepaths. 7846 7847Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 7848inadvertently omitted from the ACPI specification, and will require an 7849update to the spec. 7850 7851The source file scan for ASCII characters is now optional (-a). This 7852change 7853was made because some vendors place non-ascii characters within comments. 7854However, the scan is simply a brute-force byte compare to ensure all 7855characters in the file are in the range 0x00 to 0x7F. 7856 7857Fixed a problem with the CondRefOf operator where the compiler was 7858inappropriately checking for the existence of the target. Since the point 7859of 7860the operator is to check for the existence of the target at run-time, the 7861compiler no longer checks for the target existence. 7862 7863Fixed a problem where errors generated from the internal AML interpreter 7864during constant folding were not handled properly, causing a fault. 7865 7866Fixed a problem with overly aggressive range checking for the Stall 7867operator. The valid range (max 255) is now only checked if the operand is 7868of 7869type Integer. All other operand types cannot be statically checked. 7870 7871Fixed a problem where control method references within the RefOf, DeRefOf, 7872and ObjectType operators were not treated properly. They are now treated 7873as 7874actual references, not method invocations. 7875 7876Fixed and enhanced the "list namespace" option (-ln). This option was 7877broken 7878a number of releases ago. 7879 7880Improved error handling for the Field, IndexField, and BankField 7881operators. 7882The compiler now cleanly reports and recovers from errors in the field 7883component (FieldUnit) list. 7884 7885Fixed a disassembler problem where the optional ResourceDescriptor fields 7886TRS and TTP were not always handled correctly. 7887 7888Disassembler - Comments in output now use "//" instead of "/*" 7889 7890---------------------------------------- 789128 February 2005. Summary of changes for version 20050228: 7892 78931) ACPI CA Core Subsystem: 7894 7895Fixed a problem where the result of an Index() operator (an object 7896reference) must increment the reference count on the target object for the 7897life of the object reference. 7898 7899Implemented AML Interpreter and Debugger support for the new ACPI 3.0 7900Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 7901WordSpace 7902resource descriptors. 7903 7904Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 7905Space Descriptor" string, indicating interpreter support for the 7906descriptors 7907above. 7908 7909Implemented header support for the new ACPI 3.0 FADT flag bits. 7910 7911Implemented header support for the new ACPI 3.0 PCI Express bits for the 7912PM1 7913status/enable registers. 7914 7915Updated header support for the MADT processor local Apic struct and MADT 7916platform interrupt source struct for new ACPI 3.0 fields. 7917 7918Implemented header support for the SRAT and SLIT ACPI tables. 7919 7920Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 7921flag 7922at runtime. 7923 7924Code and Data Size: Current and previous core subsystem library sizes are 7925shown below. These are the code and data sizes for the acpica.lib produced 7926by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7927any ACPI driver or OSPM code. The debug version of the code includes the 7928debug output trace mechanism and has a much larger code and data size. 7929Note 7930that these values will vary depending on the efficiency of the compiler 7931and 7932the compiler options used during generation. 7933 7934 Previous Release: 7935 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 7936 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 7937 Current Release: 7938 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 7939 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 7940 7941 79422) iASL Compiler/Disassembler: 7943 7944Fixed a problem with the internal 64-bit String-to-integer conversion with 7945strings less than two characters long. 7946 7947Fixed a problem with constant folding where the result of the Index() 7948operator can not be considered a constant. This means that Index() cannot 7949be 7950a type3 opcode and this will require an update to the ACPI specification. 7951 7952Disassembler: Implemented support for the TTP, MTP, and TRS resource 7953descriptor fields. These fields were inadvertently ignored and not output 7954in 7955the disassembly of the resource descriptor. 7956 7957 7958 ---------------------------------------- 795911 February 2005. Summary of changes for version 20050211: 7960 79611) ACPI CA Core Subsystem: 7962 7963Implemented ACPI 3.0 support for implicit conversion within the Match() 7964operator. MatchObjects can now be of type integer, buffer, or string 7965instead 7966of just type integer. Package elements are implicitly converted to the 7967type 7968of the MatchObject. This change aligns the behavior of Match() with the 7969behavior of the other logical operators (LLess(), etc.) It also requires 7970an 7971errata change to the ACPI specification as this support was intended for 7972ACPI 3.0, but was inadvertently omitted. 7973 7974Fixed a problem with the internal implicit "to buffer" conversion. Strings 7975that are converted to buffers will cause buffer truncation if the string 7976is 7977smaller than the target buffer. Integers that are converted to buffers 7978will 7979not cause buffer truncation, only zero extension (both as per the ACPI 7980spec.) The problem was introduced when code was added to truncate the 7981buffer, but this should not be performed in all cases, only the string 7982case. 7983 7984Fixed a problem with the Buffer and Package operators where the 7985interpreter 7986would get confused if two such operators were used as operands to an ASL 7987operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 7988stack was not being popped after the execution of these operators, 7989resulting 7990in an AE_NO_RETURN_VALUE exception. 7991 7992Fixed a problem with constructs of the form Store(Index(...),...). The 7993reference object returned from Index was inadvertently resolved to an 7994actual 7995value. This problem was introduced in version 20050114 when the behavior 7996of 7997Store() was modified to restrict the object types that can be used as the 7998source operand (to match the ACPI specification.) 7999 8000Reduced excessive stack use within the AcpiGetObjectInfo procedure. 8001 8002Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 8003 8004Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 8005 8006Code and Data Size: Current and previous core subsystem library sizes are 8007shown below. These are the code and data sizes for the acpica.lib produced 8008by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8009any ACPI driver or OSPM code. The debug version of the code includes the 8010debug output trace mechanism and has a much larger code and data size. 8011Note 8012that these values will vary depending on the efficiency of the compiler 8013and 8014the compiler options used during generation. 8015 8016 Previous Release: 8017 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 8018 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 8019 Current Release: 8020 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 8021 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 8022 8023 80242) iASL Compiler/Disassembler: 8025 8026Fixed a code generation problem in the constant folding optimization code 8027where incorrect code was generated if a constant was reduced to a buffer 8028object (i.e., a reduced type 5 opcode.) 8029 8030Fixed a typechecking problem for the ToBuffer operator. Caused by an 8031incorrect return type in the internal opcode information table. 8032 8033---------------------------------------- 803425 January 2005. Summary of changes for version 20050125: 8035 80361) ACPI CA Core Subsystem: 8037 8038Fixed a recently introduced problem with the Global Lock where the 8039underlying semaphore was not created. This problem was introduced in 8040version 20050114, and caused an AE_AML_NO_OPERAND exception during an 8041Acquire() operation on _GL. 8042 8043The local object cache is now optional, and is disabled by default. Both 8044AcpiExec and the iASL compiler enable the cache because they run in user 8045mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 8046to enable the local cache. 8047 8048Fixed an issue in the internal function AcpiUtEvaluateObject concerning 8049the 8050optional "implicit return" support where an error was returned if no 8051return 8052object was expected, but one was implicitly returned. AE_OK is now 8053returned 8054in this case and the implicitly returned object is deleted. 8055AcpiUtEvaluateObject is only occasionally used, and only to execute 8056reserved 8057methods such as _STA and _INI where the return type is known up front. 8058 8059Fixed a few issues with the internal convert-to-integer code. It now 8060returns 8061an error if an attempt is made to convert a null string, a string of only 8062blanks/tabs, or a zero-length buffer. This affects both implicit 8063conversion 8064and explicit conversion via the ToInteger() operator. 8065 8066The internal debug code in AcpiUtAcquireMutex has been commented out. It 8067is 8068not needed for normal operation and should increase the performance of the 8069entire subsystem. The code remains in case it is needed for debug purposes 8070again. 8071 8072The AcpiExec source and makefile are included in the Unix/Linux package 8073for 8074the first time. 8075 8076Code and Data Size: Current and previous core subsystem library sizes are 8077shown below. These are the code and data sizes for the acpica.lib produced 8078by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8079any ACPI driver or OSPM code. The debug version of the code includes the 8080debug output trace mechanism and has a much larger code and data size. 8081Note 8082that these values will vary depending on the efficiency of the compiler 8083and 8084the compiler options used during generation. 8085 8086 Previous Release: 8087 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 8088 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 8089 Current Release: 8090 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 8091 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 8092 80932) iASL Compiler/Disassembler: 8094 8095Switch/Case support: A warning is now issued if the type of the Switch 8096value 8097cannot be determined at compile time. For example, Switch(Arg0) will 8098generate the warning, and the type is assumed to be an integer. As per the 8099ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 8100the 8101warning. 8102 8103Switch/Case support: Implemented support for buffer and string objects as 8104the switch value. This is an ACPI 3.0 feature, now that LEqual supports 8105buffers and strings. 8106 8107Switch/Case support: The emitted code for the LEqual() comparisons now 8108uses 8109the switch value as the first operand, not the second. The case value is 8110now 8111the second operand, and this allows the case value to be implicitly 8112converted to the type of the switch value, not the other way around. 8113 8114Switch/Case support: Temporary variables are now emitted immediately 8115within 8116the control method, not at the global level. This means that there are now 811736 temps available per-method, not 36 temps per-module as was the case 8118with 8119the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 8120 8121---------------------------------------- 812214 January 2005. Summary of changes for version 20050114: 8123 8124Added 2005 copyright to all module headers. This affects every module in 8125the core subsystem, iASL compiler, and the utilities. 8126 81271) ACPI CA Core Subsystem: 8128 8129Fixed an issue with the String-to-Buffer conversion code where the string 8130null terminator was not included in the buffer after conversion, but there 8131is existing ASL that assumes the string null terminator is included. This 8132is 8133the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 8134introduced in the previous version when the code was updated to correctly 8135set the converted buffer size as per the ACPI specification. The ACPI spec 8136is ambiguous and will be updated to specify that the null terminator must 8137be 8138included in the converted buffer. This also affects the ToBuffer() ASL 8139operator. 8140 8141Fixed a problem with the Mid() ASL/AML operator where it did not work 8142correctly on Buffer objects. Newly created sub-buffers were not being 8143marked 8144as initialized. 8145 8146 8147Fixed a problem in AcpiTbFindTable where incorrect string compares were 8148performed on the OemId and OemTableId table header fields. These fields 8149are 8150not null terminated, so strncmp is now used instead of strcmp. 8151 8152Implemented a restriction on the Store() ASL/AML operator to align the 8153behavior with the ACPI specification. Previously, any object could be 8154used 8155as the source operand. Now, the only objects that may be used are 8156Integers, 8157Buffers, Strings, Packages, Object References, and DDB Handles. If 8158necessary, the original behavior can be restored by enabling the 8159EnableInterpreterSlack flag. 8160 8161Enhanced the optional "implicit return" support to allow an implicit 8162return 8163value from methods that are invoked externally via the AcpiEvaluateObject 8164interface. This enables implicit returns from the _STA and _INI methods, 8165for example. 8166 8167Changed the Revision() ASL/AML operator to return the current version of 8168the 8169AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 8170returned 8171the supported ACPI version (This is the function of the _REV method). 8172 8173Updated the _REV predefined method to return the currently supported 8174version 8175of ACPI, now 3. 8176 8177Implemented batch mode option for the AcpiExec utility (-b). 8178 8179Code and Data Size: Current and previous core subsystem library sizes are 8180shown below. These are the code and data sizes for the acpica.lib produced 8181by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8182any ACPI driver or OSPM code. The debug version of the code includes the 8183debug output trace mechanism and has a much larger code and data size. 8184Note 8185that these values will vary depending on the efficiency of the compiler 8186and 8187the compiler options used during generation. 8188 8189 Previous Release: 8190 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 8191 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 8192 Current Release: 8193 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 8194 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 8195 8196---------------------------------------- 819710 December 2004. Summary of changes for version 20041210: 8198 8199ACPI 3.0 support is nearing completion in both the iASL compiler and the 8200ACPI CA core subsystem. 8201 82021) ACPI CA Core Subsystem: 8203 8204Fixed a problem in the ToDecimalString operator where the resulting string 8205length was incorrectly calculated. The length is now calculated exactly, 8206eliminating incorrect AE_STRING_LIMIT exceptions. 8207 8208Fixed a problem in the ToHexString operator to allow a maximum 200 8209character 8210string to be produced. 8211 8212Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 8213routine where the length of the resulting buffer was not truncated to the 8214new size (if the target buffer already existed). 8215 8216Code and Data Size: Current and previous core subsystem library sizes are 8217shown below. These are the code and data sizes for the acpica.lib produced 8218by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8219any ACPI driver or OSPM code. The debug version of the code includes the 8220debug output trace mechanism and has a much larger code and data size. 8221Note 8222that these values will vary depending on the efficiency of the compiler 8223and 8224the compiler options used during generation. 8225 8226 Previous Release: 8227 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 8228 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 8229 Current Release: 8230 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 8231 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 8232 8233 82342) iASL Compiler/Disassembler: 8235 8236Implemented the new ACPI 3.0 resource template macros - DWordSpace, 8237ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 8238Includes support in the disassembler. 8239 8240Implemented support for the new (ACPI 3.0) parameter to the Register 8241macro, 8242AccessSize. 8243 8244Fixed a problem where the _HE resource name for the Interrupt macro was 8245referencing bit 0 instead of bit 1. 8246 8247Implemented check for maximum 255 interrupts in the Interrupt macro. 8248 8249Fixed a problem with the predefined resource descriptor names where 8250incorrect AML code was generated if the offset within the resource buffer 8251was 0 or 1. The optimizer shortened the AML code to a single byte opcode 8252but did not update the surrounding package lengths. 8253 8254Changes to the Dma macro: All channels within the channel list must be in 8255the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 8256optional (default is BusMaster). 8257 8258Implemented check for maximum 7 data bytes for the VendorShort macro. 8259 8260The ReadWrite parameter is now optional for the Memory32 and similar 8261macros. 8262 8263---------------------------------------- 826403 December 2004. Summary of changes for version 20041203: 8265 82661) ACPI CA Core Subsystem: 8267 8268The low-level field insertion/extraction code (exfldio) has been 8269completely 8270rewritten to eliminate unnecessary complexity, bugs, and boundary 8271conditions. 8272 8273Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 8274ToDecimalString 8275operators where the input operand could be inadvertently deleted if no 8276conversion was necessary (e.g., if the input to ToInteger was an Integer 8277object.) 8278 8279Fixed a problem with the ToDecimalString and ToHexString where an 8280incorrect 8281exception code was returned if the resulting string would be > 200 chars. 8282AE_STRING_LIMIT is now returned. 8283 8284Fixed a problem with the Concatenate operator where AE_OK was always 8285returned, even if the operation failed. 8286 8287Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 8288semaphores to be allocated. 8289 8290Code and Data Size: Current and previous core subsystem library sizes are 8291shown below. These are the code and data sizes for the acpica.lib produced 8292by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8293any ACPI driver or OSPM code. The debug version of the code includes the 8294debug output trace mechanism and has a much larger code and data size. 8295Note 8296that these values will vary depending on the efficiency of the compiler 8297and 8298the compiler options used during generation. 8299 8300 Previous Release: 8301 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 8302 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 8303 Current Release: 8304 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 8305 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 8306 8307 83082) iASL Compiler/Disassembler: 8309 8310Fixed typechecking for the ObjectType and SizeOf operators. Problem was 8311recently introduced in 20041119. 8312 8313Fixed a problem with the ToUUID macro where the upper nybble of each 8314buffer 8315byte was inadvertently set to zero. 8316 8317---------------------------------------- 831819 November 2004. Summary of changes for version 20041119: 8319 83201) ACPI CA Core Subsystem: 8321 8322Fixed a problem in the internal ConvertToInteger routine where new 8323integers 8324were not truncated to 32 bits for 32-bit ACPI tables. This routine 8325converts 8326buffers and strings to integers. 8327 8328Implemented support to store a value to an Index() on a String object. 8329This 8330is an ACPI 2.0 feature that had not yet been implemented. 8331 8332Implemented new behavior for storing objects to individual package 8333elements 8334(via the Index() operator). The previous behavior was to invoke the 8335implicit 8336conversion rules if an object was already present at the index. The new 8337behavior is to simply delete any existing object and directly store the 8338new 8339object. Although the ACPI specification seems unclear on this subject, 8340other 8341ACPI implementations behave in this manner. (This is the root of the 8342AE_BAD_HEX_CONSTANT issue.) 8343 8344Modified the RSDP memory scan mechanism to support the extended checksum 8345for 8346ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 8347RSDP signature is found with a valid checksum. 8348 8349Code and Data Size: Current and previous core subsystem library sizes are 8350shown below. These are the code and data sizes for the acpica.lib produced 8351by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8352any ACPI driver or OSPM code. The debug version of the code includes the 8353debug output trace mechanism and has a much larger code and data size. 8354Note 8355that these values will vary depending on the efficiency of the compiler 8356and 8357the compiler options used during generation. 8358 8359 Previous Release: 8360 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 8361 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 8362 Current Release: 8363 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 8364 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 8365 8366 83672) iASL Compiler/Disassembler: 8368 8369Fixed a missing semicolon in the aslcompiler.y file. 8370 8371---------------------------------------- 837205 November 2004. Summary of changes for version 20041105: 8373 83741) ACPI CA Core Subsystem: 8375 8376Implemented support for FADT revision 2. This was an interim table 8377(between 8378ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 8379 8380Implemented optional support to allow uninitialized LocalX and ArgX 8381variables in a control method. The variables are initialized to an 8382Integer 8383object with a value of zero. This support is enabled by setting the 8384AcpiGbl_EnableInterpreterSlack flag to TRUE. 8385 8386Implemented support for Integer objects for the SizeOf operator. Either 4 8387or 8 is returned, depending on the current integer size (32-bit or 64-bit, 8388depending on the parent table revision). 8389 8390Fixed a problem in the implementation of the SizeOf and ObjectType 8391operators 8392where the operand was resolved to a value too early, causing incorrect 8393return values for some objects. 8394 8395Fixed some possible memory leaks during exceptional conditions. 8396 8397Code and Data Size: Current and previous core subsystem library sizes are 8398shown below. These are the code and data sizes for the acpica.lib produced 8399by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8400any ACPI driver or OSPM code. The debug version of the code includes the 8401debug output trace mechanism and has a much larger code and data size. 8402Note 8403that these values will vary depending on the efficiency of the compiler 8404and 8405the compiler options used during generation. 8406 8407 Previous Release: 8408 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 8409 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 8410 Current Release: 8411 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 8412 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 8413 8414 84152) iASL Compiler/Disassembler: 8416 8417Implemented support for all ACPI 3.0 reserved names and methods. 8418 8419Implemented all ACPI 3.0 grammar elements in the front-end, including 8420support for semicolons. 8421 8422Implemented the ACPI 3.0 Function() and ToUUID() macros 8423 8424Fixed a problem in the disassembler where a Scope() operator would not be 8425emitted properly if the target of the scope was in another table. 8426 8427---------------------------------------- 842815 October 2004. Summary of changes for version 20041015: 8429 8430Note: ACPI CA is currently undergoing an in-depth and complete formal 8431evaluation to test/verify the following areas. Other suggestions are 8432welcome. This will result in an increase in the frequency of releases and 8433the number of bug fixes in the next few months. 8434 - Functional tests for all ASL/AML operators 8435 - All implicit/explicit type conversions 8436 - Bit fields and operation regions 8437 - 64-bit math support and 32-bit-only "truncated" math support 8438 - Exceptional conditions, both compiler and interpreter 8439 - Dynamic object deletion and memory leaks 8440 - ACPI 3.0 support when implemented 8441 - External interfaces to the ACPI subsystem 8442 8443 84441) ACPI CA Core Subsystem: 8445 8446Fixed two alignment issues on 64-bit platforms - within debug statements 8447in 8448AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 8449Address 8450field within the non-aligned ACPI generic address structure. 8451 8452Fixed a problem in the Increment and Decrement operators where incorrect 8453operand resolution could result in the inadvertent modification of the 8454original integer when the integer is passed into another method as an 8455argument and the arg is then incremented/decremented. 8456 8457Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 8458bit 8459BCD number were truncated during conversion. 8460 8461Fixed a problem in the ToDecimal operator where the length of the 8462resulting 8463string could be set incorrectly too long if the input operand was a Buffer 8464object. 8465 8466Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 8467(0) 8468within a buffer would prematurely terminate a compare between buffer 8469objects. 8470 8471Added a check for string overflow (>200 characters as per the ACPI 8472specification) during the Concatenate operator with two string operands. 8473 8474Code and Data Size: Current and previous core subsystem library sizes are 8475shown below. These are the code and data sizes for the acpica.lib produced 8476by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8477any ACPI driver or OSPM code. The debug version of the code includes the 8478debug output trace mechanism and has a much larger code and data size. 8479Note 8480that these values will vary depending on the efficiency of the compiler 8481and 8482the compiler options used during generation. 8483 8484 Previous Release: 8485 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 8486 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 8487 Current Release: 8488 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 8489 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 8490 8491 8492 84932) iASL Compiler/Disassembler: 8494 8495Allow the use of the ObjectType operator on uninitialized Locals and Args 8496(returns 0 as per the ACPI specification). 8497 8498Fixed a problem where the compiler would fault if there was a syntax error 8499in the FieldName of all of the various CreateXXXField operators. 8500 8501Disallow the use of lower case letters within the EISAID macro, as per the 8502ACPI specification. All EISAID strings must be of the form "UUUNNNN" 8503Where 8504U is an uppercase letter and N is a hex digit. 8505 8506 8507---------------------------------------- 850806 October 2004. Summary of changes for version 20041006: 8509 85101) ACPI CA Core Subsystem: 8511 8512Implemented support for the ACPI 3.0 Timer operator. This ASL function 8513implements a 64-bit timer with 100 nanosecond granularity. 8514 8515Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 8516implement the ACPI 3.0 Timer operator. This allows the host OS to 8517implement 8518the timer with the best clock available. Also, it keeps the core subsystem 8519out of the clock handling business, since the host OS (usually) performs 8520this function. 8521 8522Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 8523functions use a 64-bit address which is part of the packed ACPI Generic 8524Address Structure. Since the structure is non-aligned, the alignment 8525macros 8526are now used to extract the address to a local variable before use. 8527 8528Fixed a problem where the ToInteger operator assumed all input strings 8529were 8530hexadecimal. The operator now handles both decimal strings and hex strings 8531(prefixed with "0x"). 8532 8533Fixed a problem where the string length in the string object created as a 8534result of the internal ConvertToString procedure could be incorrect. This 8535potentially affected all implicit conversions and also the ToDecimalString 8536and ToHexString operators. 8537 8538Fixed two problems in the ToString operator. If the length parameter was 8539zero, an incorrect string object was created and the value of the input 8540length parameter was inadvertently changed from zero to Ones. 8541 8542Fixed a problem where the optional ResourceSource string in the 8543ExtendedIRQ 8544resource macro was ignored. 8545 8546Simplified the interfaces to the internal division functions, reducing 8547code 8548size and complexity. 8549 8550Code and Data Size: Current and previous core subsystem library sizes are 8551shown below. These are the code and data sizes for the acpica.lib produced 8552by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8553any ACPI driver or OSPM code. The debug version of the code includes the 8554debug output trace mechanism and has a much larger code and data size. 8555Note 8556that these values will vary depending on the efficiency of the compiler 8557and 8558the compiler options used during generation. 8559 8560 Previous Release: 8561 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 8562 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 8563 Current Release: 8564 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 8565 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 8566 8567 85682) iASL Compiler/Disassembler: 8569 8570Implemented support for the ACPI 3.0 Timer operator. 8571 8572Fixed a problem where the Default() operator was inadvertently ignored in 8573a 8574Switch/Case block. This was a problem in the translation of the Switch 8575statement to If...Else pairs. 8576 8577Added support to allow a standalone Return operator, with no parentheses 8578(or 8579operands). 8580 8581Fixed a problem with code generation for the ElseIf operator where the 8582translated Else...If parse tree was improperly constructed leading to the 8583loss of some code. 8584 8585---------------------------------------- 858622 September 2004. Summary of changes for version 20040922: 8587 85881) ACPI CA Core Subsystem: 8589 8590Fixed a problem with the implementation of the LNot() operator where 8591"Ones" 8592was not returned for the TRUE case. Changed the code to return Ones 8593instead 8594of (!Arg) which was usually 1. This change affects iASL constant folding 8595for 8596this operator also. 8597 8598Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 8599initialized properly -- Now zero the entire buffer in this case where the 8600buffer already exists. 8601 8602Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 8603Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 8604related code considerably. This will require changes/updates to all OS 8605interface layers (OSLs.) 8606 8607Implemented a new external interface, AcpiInstallExceptionHandler, to 8608allow 8609a system exception handler to be installed. This handler is invoked upon 8610any 8611run-time exception that occurs during control method execution. 8612 8613Added support for the DSDT in AcpiTbFindTable. This allows the 8614DataTableRegion() operator to access the local copy of the DSDT. 8615 8616Code and Data Size: Current and previous core subsystem library sizes are 8617shown below. These are the code and data sizes for the acpica.lib produced 8618by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8619any ACPI driver or OSPM code. The debug version of the code includes the 8620debug output trace mechanism and has a much larger code and data size. 8621Note 8622that these values will vary depending on the efficiency of the compiler 8623and 8624the compiler options used during generation. 8625 8626 Previous Release: 8627 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 8628 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 8629 Current Release: 8630 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 8631 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 8632 8633 86342) iASL Compiler/Disassembler: 8635 8636Fixed a problem with constant folding and the LNot operator. LNot was 8637returning 1 in the TRUE case, not Ones as per the ACPI specification. This 8638could result in the generation of an incorrect folded/reduced constant. 8639 8640End-Of-File is now allowed within a "//"-style comment. A parse error no 8641longer occurs if such a comment is at the very end of the input ASL source 8642file. 8643 8644Implemented the "-r" option to override the Revision in the table header. 8645The initial use of this option will be to simplify the evaluation of the 8646AML 8647interpreter by allowing a single ASL source module to be compiled for 8648either 864932-bit or 64-bit integers. 8650 8651 8652---------------------------------------- 865327 August 2004. Summary of changes for version 20040827: 8654 86551) ACPI CA Core Subsystem: 8656 8657- Implemented support for implicit object conversion in the non-numeric 8658logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 8659LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 8660the second operand is implicitly converted on the fly to match the type of 8661the first operand. For example: 8662 8663 LEqual (Source1, Source2) 8664 8665Source1 and Source2 must each evaluate to an integer, a string, or a 8666buffer. 8667The data type of Source1 dictates the required type of Source2. Source2 is 8668implicitly converted if necessary to match the type of Source1. 8669 8670- Updated and corrected the behavior of the string conversion support. 8671The 8672rules concerning conversion of buffers to strings (according to the ACPI 8673specification) are as follows: 8674 8675ToDecimalString - explicit byte-wise conversion of buffer to string of 8676decimal values (0-255) separated by commas. ToHexString - explicit byte- 8677wise 8678conversion of buffer to string of hex values (0-FF) separated by commas. 8679ToString - explicit byte-wise conversion of buffer to string. Byte-by- 8680byte 8681copy with no transform except NULL terminated. Any other implicit buffer- 8682to- 8683string conversion - byte-wise conversion of buffer to string of hex values 8684(0-FF) separated by spaces. 8685 8686- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 8687 8688- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 8689one byte too short in the case of a node in the root scope. This could 8690cause a fault during debug output. 8691 8692- Code and Data Size: Current and previous core subsystem library sizes 8693are 8694shown below. These are the code and data sizes for the acpica.lib 8695produced 8696by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8697any ACPI driver or OSPM code. The debug version of the code includes the 8698debug output trace mechanism and has a much larger code and data size. 8699Note 8700that these values will vary depending on the efficiency of the compiler 8701and 8702the compiler options used during generation. 8703 8704 Previous Release: 8705 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 8706 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 8707 Current Release: 8708 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 8709 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 8710 8711 87122) iASL Compiler/Disassembler: 8713 8714- Fixed a Linux generation error. 8715 8716 8717---------------------------------------- 871816 August 2004. Summary of changes for version 20040816: 8719 87201) ACPI CA Core Subsystem: 8721 8722Designed and implemented support within the AML interpreter for the so- 8723called "implicit return". This support returns the result of the last ASL 8724operation within a control method, in the absence of an explicit Return() 8725operator. A few machines depend on this behavior, even though it is not 8726explicitly supported by the ASL language. It is optional support that can 8727be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 8728 8729Removed support for the PCI_Config address space from the internal low 8730level 8731hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 8732support was not used internally, and would not work correctly anyway 8733because 8734the PCI bus number and segment number were not supported. There are 8735separate interfaces for PCI configuration space access because of the 8736unique 8737interface. 8738 8739Code and Data Size: Current and previous core subsystem library sizes are 8740shown below. These are the code and data sizes for the acpica.lib 8741produced 8742by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8743any ACPI driver or OSPM code. The debug version of the code includes the 8744debug output trace mechanism and has a much larger code and data size. 8745Note 8746that these values will vary depending on the efficiency of the compiler 8747and 8748the compiler options used during generation. 8749 8750 Previous Release: 8751 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 8752 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 8753 Current Release: 8754 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 8755 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 8756 8757 87582) iASL Compiler/Disassembler: 8759 8760Fixed a problem where constants in ASL expressions at the root level (not 8761within a control method) could be inadvertently truncated during code 8762generation. This problem was introduced in the 20040715 release. 8763 8764 8765---------------------------------------- 876615 July 2004. Summary of changes for version 20040715: 8767 87681) ACPI CA Core Subsystem: 8769 8770Restructured the internal HW GPE interfaces to pass/track the current 8771state 8772of interrupts (enabled/disabled) in order to avoid possible deadlock and 8773increase flexibility of the interfaces. 8774 8775Implemented a "lexicographical compare" for String and Buffer objects 8776within 8777the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 8778as per further clarification to the ACPI specification. Behavior is 8779similar 8780to C library "strcmp". 8781 8782Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 8783external function. In the 32-bit non-debug case, the stack use has been 8784reduced from 168 bytes to 32 bytes. 8785 8786Deployed a new run-time configuration flag, 8787AcpiGbl_EnableInterpreterSlack, 8788whose purpose is to allow the AML interpreter to forgive certain bad AML 8789constructs. Default setting is FALSE. 8790 8791Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 8792IO 8793support code. If enabled, it allows field access to go beyond the end of 8794a 8795region definition if the field is within the region length rounded up to 8796the 8797next access width boundary (a common coding error.) 8798 8799Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 8800ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 8801these 8802symbols are lowercased by the latest version of the AcpiSrc tool. 8803 8804The prototypes for the PCI interfaces in acpiosxf.h have been updated to 8805rename "Register" to simply "Reg" to prevent certain compilers from 8806complaining. 8807 8808Code and Data Size: Current and previous core subsystem library sizes are 8809shown below. These are the code and data sizes for the acpica.lib 8810produced 8811by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8812any ACPI driver or OSPM code. The debug version of the code includes the 8813debug output trace mechanism and has a much larger code and data size. 8814Note 8815that these values will vary depending on the efficiency of the compiler 8816and 8817the compiler options used during generation. 8818 8819 Previous Release: 8820 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 8821 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 8822 Current Release: 8823 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 8824 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 8825 8826 88272) iASL Compiler/Disassembler: 8828 8829Implemented full support for Package objects within the Case() operator. 8830Note: The Break() operator is currently not supported within Case blocks 8831(TermLists) as there is some question about backward compatibility with 8832ACPI 88331.0 interpreters. 8834 8835 8836Fixed a problem where complex terms were not supported properly within the 8837Switch() operator. 8838 8839Eliminated extraneous warning for compiler-emitted reserved names of the 8840form "_T_x". (Used in Switch/Case operators.) 8841 8842Eliminated optimization messages for "_T_x" objects and small constants 8843within the DefinitionBlock operator. 8844 8845 8846---------------------------------------- 884715 June 2004. Summary of changes for version 20040615: 8848 88491) ACPI CA Core Subsystem: 8850 8851Implemented support for Buffer and String objects (as per ACPI 2.0) for 8852the 8853following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 8854LLessEqual. 8855 8856All directory names in the entire source package are lower case, as they 8857were in earlier releases. 8858 8859Implemented "Disassemble" command in the AML debugger that will 8860disassemble 8861a single control method. 8862 8863Code and Data Size: Current and previous core subsystem library sizes are 8864shown below. These are the code and data sizes for the acpica.lib 8865produced 8866by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8867any ACPI driver or OSPM code. The debug version of the code includes the 8868debug output trace mechanism and has a much larger code and data size. 8869Note 8870that these values will vary depending on the efficiency of the compiler 8871and 8872the compiler options used during generation. 8873 8874 Previous Release: 8875 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 8876 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 8877 8878 Current Release: 8879 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 8880 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 8881 8882 88832) iASL Compiler/Disassembler: 8884 8885Implemented support for Buffer and String objects (as per ACPI 2.0) for 8886the 8887following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 8888LLessEqual. 8889 8890All directory names in the entire source package are lower case, as they 8891were in earlier releases. 8892 8893Fixed a fault when using the -g or -d<nofilename> options if the FADT was 8894not found. 8895 8896Fixed an issue with the Windows version of the compiler where later 8897versions 8898of Windows place the FADT in the registry under the name "FADT" and not 8899"FACP" as earlier versions did. This applies when using the -g or - 8900d<nofilename> options. The compiler now looks for both strings as 8901necessary. 8902 8903Fixed a problem with compiler namepath optimization where a namepath 8904within 8905the Scope() operator could not be optimized if the namepath was a subpath 8906of 8907the current scope path. 8908 8909---------------------------------------- 891027 May 2004. Summary of changes for version 20040527: 8911 89121) ACPI CA Core Subsystem: 8913 8914Completed a new design and implementation for EBDA (Extended BIOS Data 8915Area) 8916support in the RSDP scan code. The original code improperly scanned for 8917the 8918EBDA by simply scanning from memory location 0 to 0x400. The correct 8919method 8920is to first obtain the EBDA pointer from within the BIOS data area, then 8921scan 1K of memory starting at the EBDA pointer. There appear to be few if 8922any machines that place the RSDP in the EBDA, however. 8923 8924Integrated a fix for a possible fault during evaluation of BufferField 8925arguments. Obsolete code that was causing the problem was removed. 8926 8927Found and fixed a problem in the Field Support Code where data could be 8928corrupted on a bit field read that starts on an aligned boundary but does 8929not end on an aligned boundary. Merged the read/write "datum length" 8930calculation code into a common procedure. 8931 8932Rolled in a couple of changes to the FreeBSD-specific header. 8933 8934 8935Code and Data Size: Current and previous core subsystem library sizes are 8936shown below. These are the code and data sizes for the acpica.lib 8937produced 8938by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8939any ACPI driver or OSPM code. The debug version of the code includes the 8940debug output trace mechanism and has a much larger code and data size. 8941Note 8942that these values will vary depending on the efficiency of the compiler 8943and 8944the compiler options used during generation. 8945 8946 Previous Release: 8947 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 8948 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 8949 Current Release: 8950 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 8951 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 8952 8953 89542) iASL Compiler/Disassembler: 8955 8956Fixed a generation warning produced by some overly-verbose compilers for a 895764-bit constant. 8958 8959---------------------------------------- 896014 May 2004. Summary of changes for version 20040514: 8961 89621) ACPI CA Core Subsystem: 8963 8964Fixed a problem where hardware GPE enable bits sometimes not set properly 8965during and after GPE method execution. Result of 04/27 changes. 8966 8967Removed extra "clear all GPEs" when sleeping/waking. 8968 8969Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 8970AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 8971to 8972the new AcpiEv* calls as appropriate. 8973 8974ACPI_OS_NAME was removed from the OS-specific headers. The default name 8975is 8976now "Microsoft Windows NT" for maximum compatibility. However this can be 8977changed by modifying the acconfig.h file. 8978 8979Allow a single invocation of AcpiInstallNotifyHandler for a handler that 8980traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 8981 8982Run _INI methods on ThermalZone objects. This is against the ACPI 8983specification, but there is apparently ASL code in the field that has 8984these 8985_INI methods, and apparently "other" AML interpreters execute them. 8986 8987Performed a full 16/32/64 bit lint that resulted in some small changes. 8988 8989Added a sleep simulation command to the AML debugger to test sleep code. 8990 8991Code and Data Size: Current and previous core subsystem library sizes are 8992shown below. These are the code and data sizes for the acpica.lib 8993produced 8994by the Microsoft Visual C++ 6.0 compiler, and these values do not include 8995any ACPI driver or OSPM code. The debug version of the code includes the 8996debug output trace mechanism and has a much larger code and data size. 8997Note 8998that these values will vary depending on the efficiency of the compiler 8999and 9000the compiler options used during generation. 9001 9002 Previous Release: 9003 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 9004 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 9005 Current Release: 9006 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 9007 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 9008 9009---------------------------------------- 901027 April 2004. Summary of changes for version 20040427: 9011 90121) ACPI CA Core Subsystem: 9013 9014Completed a major overhaul of the GPE handling within ACPI CA. There are 9015now three types of GPEs: wake-only, runtime-only, and combination 9016wake/run. 9017The only GPEs allowed to be combination wake/run are for button-style 9018devices such as a control-method power button, control-method sleep 9019button, 9020or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 9021not 9022referenced by any _PRW methods are marked for "runtime" and hardware 9023enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 9024(and disabled at runtime). However, at sleep time, only those GPEs that 9025have been specifically enabled for wake via the AcpiEnableGpe interface 9026will 9027actually be hardware enabled. 9028 9029A new external interface has been added, AcpiSetGpeType(), that is meant 9030to 9031be used by device drivers to force a GPE to a particular type. It will be 9032especially useful for the drivers for the button devices mentioned above. 9033 9034Completed restructuring of the ACPI CA initialization sequence so that 9035default operation region handlers are installed before GPEs are 9036initialized 9037and the _PRW methods are executed. This will prevent errors when the _PRW 9038methods attempt to access system memory or I/O space. 9039 9040GPE enable/disable no longer reads the GPE enable register. We now keep 9041the 9042enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 9043thus no longer depend on the hardware to maintain these bits. 9044 9045Always clear the wake status and fixed/GPE status bits before sleep, even 9046for state S5. 9047 9048Improved the AML debugger output for displaying the GPE blocks and their 9049current status. 9050 9051Added new strings for the _OSI method, of the form "Windows 2001 SPx" 9052where 9053x = 0,1,2,3,4. 9054 9055Fixed a problem where the physical address was incorrectly calculated when 9056the Load() operator was used to directly load from an Operation Region 9057(vs. 9058loading from a Field object.) Also added check for minimum table length 9059for 9060this case. 9061 9062Fix for multiple mutex acquisition. Restore original thread SyncLevel on 9063mutex release. 9064 9065Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 9066consistency with the other fields returned. 9067 9068Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 9069structure for each GPE in the system, so the size of this structure is 9070important. 9071 9072CPU stack requirement reduction: Cleaned up the method execution and 9073object 9074evaluation paths so that now a parameter structure is passed, instead of 9075copying the various method parameters over and over again. 9076 9077In evregion.c: Correctly exit and reenter the interpreter region if and 9078only if dispatching an operation region request to a user-installed 9079handler. 9080Do not exit/reenter when dispatching to a default handler (e.g., default 9081system memory or I/O handlers) 9082 9083 9084Notes for updating drivers for the new GPE support. The following changes 9085must be made to ACPI-related device drivers that are attached to one or 9086more 9087GPEs: (This information will be added to the ACPI CA Programmer 9088Reference.) 9089 90901) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 9091explicitly call AcpiEnableGpe. 90922) There is a new interface called AcpiSetGpeType. This should be called 9093before enabling the GPE. Also, this interface will automatically disable 9094the GPE if it is currently enabled. 90953) AcpiEnableGpe no longer supports a GPE type flag. 9096 9097Specific drivers that must be changed: 90981) EC driver: 9099 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 9100AeGpeHandler, NULL); 9101 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 9102 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 9103 91042) Button Drivers (Power, Lid, Sleep): 9105Run _PRW method under parent device 9106If _PRW exists: /* This is a control-method button */ 9107 Extract GPE number and possibly GpeDevice 9108 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 9109 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 9110 9111For all other devices that have _PRWs, we automatically set the GPE type 9112to 9113ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 9114must be done on a selective basis, usually requiring some kind of user app 9115to allow the user to pick the wake devices. 9116 9117 9118Code and Data Size: Current and previous core subsystem library sizes are 9119shown below. These are the code and data sizes for the acpica.lib 9120produced 9121by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9122any ACPI driver or OSPM code. The debug version of the code includes the 9123debug output trace mechanism and has a much larger code and data size. 9124Note 9125that these values will vary depending on the efficiency of the compiler 9126and 9127the compiler options used during generation. 9128 9129 Previous Release: 9130 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 9131 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 9132 Current Release: 9133 9134 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 9135 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 9136 9137 9138 9139---------------------------------------- 914002 April 2004. Summary of changes for version 20040402: 9141 91421) ACPI CA Core Subsystem: 9143 9144Fixed an interpreter problem where an indirect store through an ArgX 9145parameter was incorrectly applying the "implicit conversion rules" during 9146the store. From the ACPI specification: "If the target is a method local 9147or 9148argument (LocalX or ArgX), no conversion is performed and the result is 9149stored directly to the target". The new behavior is to disable implicit 9150conversion during ALL stores to an ArgX. 9151 9152Changed the behavior of the _PRW method scan to ignore any and all errors 9153returned by a given _PRW. This prevents the scan from aborting from the 9154failure of any single _PRW. 9155 9156Moved the runtime configuration parameters from the global init procedure 9157to 9158static variables in acglobal.h. This will allow the host to override the 9159default values easily. 9160 9161Code and Data Size: Current and previous core subsystem library sizes are 9162shown below. These are the code and data sizes for the acpica.lib 9163produced 9164by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9165any ACPI driver or OSPM code. The debug version of the code includes the 9166debug output trace mechanism and has a much larger code and data size. 9167Note 9168that these values will vary depending on the efficiency of the compiler 9169and 9170the compiler options used during generation. 9171 9172 Previous Release: 9173 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 9174 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 9175 Current Release: 9176 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 9177 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 9178 9179 91802) iASL Compiler/Disassembler: 9181 9182iASL now fully disassembles SSDTs. However, External() statements are not 9183generated automatically for unresolved symbols at this time. This is a 9184planned feature for future implementation. 9185 9186Fixed a scoping problem in the disassembler that occurs when the type of 9187the 9188target of a Scope() operator is overridden. This problem caused an 9189incorrectly nested internal namespace to be constructed. 9190 9191Any warnings or errors that are emitted during disassembly are now 9192commented 9193out automatically so that the resulting file can be recompiled without any 9194hand editing. 9195 9196---------------------------------------- 919726 March 2004. Summary of changes for version 20040326: 9198 91991) ACPI CA Core Subsystem: 9200 9201Implemented support for "wake" GPEs via interaction between GPEs and the 9202_PRW methods. Every GPE that is pointed to by one or more _PRWs is 9203identified as a WAKE GPE and by default will no longer be enabled at 9204runtime. Previously, we were blindly enabling all GPEs with a 9205corresponding 9206_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 9207We 9208believe this has been the cause of thousands of "spurious" GPEs on some 9209systems. 9210 9211This new GPE behavior is can be reverted to the original behavior (enable 9212ALL GPEs at runtime) via a runtime flag. 9213 9214Fixed a problem where aliased control methods could not access objects 9215properly. The proper scope within the namespace was not initialized 9216(transferred to the target of the aliased method) before executing the 9217target method. 9218 9219Fixed a potential race condition on internal object deletion on the return 9220object in AcpiEvaluateObject. 9221 9222Integrated a fix for resource descriptors where both _MEM and _MTP were 9223being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 9224wide, 0x0F instead of 0x03.) 9225 9226Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing 9227a 9228fault in some cases. 9229 9230Updated Notify() values for debug statements in evmisc.c 9231 9232Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 9233 9234Code and Data Size: Current and previous core subsystem library sizes are 9235shown below. These are the code and data sizes for the acpica.lib 9236produced 9237by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9238any ACPI driver or OSPM code. The debug version of the code includes the 9239debug output trace mechanism and has a much larger code and data size. 9240Note 9241that these values will vary depending on the efficiency of the compiler 9242and 9243the compiler options used during generation. 9244 9245 Previous Release: 9246 9247 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 9248 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 9249 Current Release: 9250 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 9251 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 9252 9253---------------------------------------- 925411 March 2004. Summary of changes for version 20040311: 9255 92561) ACPI CA Core Subsystem: 9257 9258Fixed a problem where errors occurring during the parse phase of control 9259method execution did not abort cleanly. For example, objects created and 9260installed in the namespace were not deleted. This caused all subsequent 9261invocations of the method to return the AE_ALREADY_EXISTS exception. 9262 9263Implemented a mechanism to force a control method to "Serialized" 9264execution 9265if the method attempts to create namespace objects. (The root of the 9266AE_ALREADY_EXISTS problem.) 9267 9268Implemented support for the predefined _OSI "internal" control method. 9269Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 9270"Windows 2001.1", and can be easily upgraded for new strings as necessary. 9271This feature will allow "other" operating systems to execute the fully 9272tested, "Windows" code path through the ASL code 9273 9274Global Lock Support: Now allows multiple acquires and releases with any 9275internal thread. Removed concept of "owning thread" for this special 9276mutex. 9277 9278Fixed two functions that were inappropriately declaring large objects on 9279the 9280CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 9281during 9282method execution considerably. 9283 9284Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 9285S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 9286 9287Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 9288defined on the machine. 9289 9290Implemented two runtime options: One to force all control method 9291execution 9292to "Serialized" to mimic Windows behavior, another to disable _OSI support 9293if it causes problems on a given machine. 9294 9295Code and Data Size: Current and previous core subsystem library sizes are 9296shown below. These are the code and data sizes for the acpica.lib 9297produced 9298by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9299any ACPI driver or OSPM code. The debug version of the code includes the 9300debug output trace mechanism and has a much larger code and data size. 9301Note 9302that these values will vary depending on the efficiency of the compiler 9303and 9304the compiler options used during generation. 9305 9306 Previous Release: 9307 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 9308 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 9309 Current Release: 9310 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 9311 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 9312 93132) iASL Compiler/Disassembler: 9314 9315Fixed an array size problem for FreeBSD that would cause the compiler to 9316fault. 9317 9318---------------------------------------- 931920 February 2004. Summary of changes for version 20040220: 9320 9321 93221) ACPI CA Core Subsystem: 9323 9324Implemented execution of _SxD methods for Device objects in the 9325GetObjectInfo interface. 9326 9327Fixed calls to _SST method to pass the correct arguments. 9328 9329Added a call to _SST on wake to restore to "working" state. 9330 9331Check for End-Of-Buffer failure case in the WalkResources interface. 9332 9333Integrated fix for 64-bit alignment issue in acglobal.h by moving two 9334structures to the beginning of the file. 9335 9336After wake, clear GPE status register(s) before enabling GPEs. 9337 9338After wake, clear/enable power button. (Perhaps we should clear/enable 9339all 9340fixed events upon wake.) 9341 9342Fixed a couple of possible memory leaks in the Namespace manager. 9343 9344Integrated latest acnetbsd.h file. 9345 9346---------------------------------------- 934711 February 2004. Summary of changes for version 20040211: 9348 9349 93501) ACPI CA Core Subsystem: 9351 9352Completed investigation and implementation of the call-by-reference 9353mechanism for control method arguments. 9354 9355Fixed a problem where a store of an object into an indexed package could 9356fail if the store occurs within a different method than the method that 9357created the package. 9358 9359Fixed a problem where the ToDecimal operator could return incorrect 9360results. 9361 9362Fixed a problem where the CopyObject operator could fail on some of the 9363more 9364obscure objects (e.g., Reference objects.) 9365 9366Improved the output of the Debug object to display buffer, package, and 9367index objects. 9368 9369Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 9370the expected result. 9371 9372Added permanent ACPI_REPORT_ERROR macros for all instances of the 9373ACPI_AML_INTERNAL exception. 9374 9375Integrated latest version of acfreebsd.h 9376 9377---------------------------------------- 937816 January 2004. Summary of changes for version 20040116: 9379 9380The purpose of this release is primarily to update the copyright years in 9381each module, thus causing a huge number of diffs. There are a few small 9382functional changes, however. 9383 93841) ACPI CA Core Subsystem: 9385 9386Improved error messages when there is a problem finding one or more of the 9387required base ACPI tables 9388 9389Reintroduced the definition of APIC_HEADER in actbl.h 9390 9391Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 9392 9393Removed extraneous reference to NewObj in dsmthdat.c 9394 93952) iASL compiler 9396 9397Fixed a problem introduced in December that disabled the correct 9398disassembly 9399of Resource Templates 9400 9401 9402---------------------------------------- 940303 December 2003. Summary of changes for version 20031203: 9404 94051) ACPI CA Core Subsystem: 9406 9407Changed the initialization of Operation Regions during subsystem 9408init to perform two entire walks of the ACPI namespace; The first 9409to initialize the regions themselves, the second to execute the 9410_REG methods. This fixed some interdependencies across _REG 9411methods found on some machines. 9412 9413Fixed a problem where a Store(Local0, Local1) could simply update 9414the object reference count, and not create a new copy of the 9415object if the Local1 is uninitialized. 9416 9417Implemented support for the _SST reserved method during sleep 9418transitions. 9419 9420Implemented support to clear the SLP_TYP and SLP_EN bits when 9421waking up, this is apparently required by some machines. 9422 9423When sleeping, clear the wake status only if SleepState is not S5. 9424 9425Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 9426pointer arithmetic advanced a string pointer too far. 9427 9428Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 9429could be returned if the requested table has not been loaded. 9430 9431Within the support for IRQ resources, restructured the handling of 9432the active and edge/level bits. 9433 9434Fixed a few problems in AcpiPsxExecute() where memory could be 9435leaked under certain error conditions. 9436 9437Improved error messages for the cases where the ACPI mode could 9438not be entered. 9439 9440Code and Data Size: Current and previous core subsystem library 9441sizes are shown below. These are the code and data sizes for the 9442acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9443these values do not include any ACPI driver or OSPM code. The 9444debug version of the code includes the debug output trace 9445mechanism and has a much larger code and data size. Note that 9446these values will vary depending on the efficiency of the compiler 9447and the compiler options used during generation. 9448 9449 Previous Release (20031029): 9450 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 9451 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 9452 Current Release: 9453 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 9454 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 9455 94562) iASL Compiler/Disassembler: 9457 9458Implemented a fix for the iASL disassembler where a bad index was 9459generated. This was most noticeable on 64-bit platforms 9460 9461 9462---------------------------------------- 946329 October 2003. Summary of changes for version 20031029: 9464 94651) ACPI CA Core Subsystem: 9466 9467 9468Fixed a problem where a level-triggered GPE with an associated 9469_Lxx control method was incorrectly cleared twice. 9470 9471Fixed a problem with the Field support code where an access can 9472occur beyond the end-of-region if the field is non-aligned but 9473extends to the very end of the parent region (resulted in an 9474AE_AML_REGION_LIMIT exception.) 9475 9476Fixed a problem with ACPI Fixed Events where an RT Clock handler 9477would not get invoked on an RTC event. The RTC event bitmasks for 9478the PM1 registers were not being initialized properly. 9479 9480Implemented support for executing _STA and _INI methods for 9481Processor objects. Although this is currently not part of the 9482ACPI specification, there is existing ASL code that depends on the 9483init-time execution of these methods. 9484 9485Implemented and deployed a GetDescriptorName function to decode 9486the various types of internal descriptors. Guards against null 9487descriptors during debug output also. 9488 9489Implemented and deployed a GetNodeName function to extract the 4- 9490character namespace node name. This function simplifies the debug 9491and error output, as well as guarding against null pointers during 9492output. 9493 9494Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 9495simplify the debug and error output of 64-bit integers. This 9496macro replaces the HIDWORD and LODWORD macros for dumping these 9497integers. 9498 9499Updated the implementation of the Stall() operator to only call 9500AcpiOsStall(), and also return an error if the operand is larger 9501than 255. This preserves the required behavior of not 9502relinquishing the processor, as would happen if AcpiOsSleep() was 9503called for "long stalls". 9504 9505Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 9506initialized are now treated as NOOPs. 9507 9508Cleaned up a handful of warnings during 64-bit generation. 9509 9510Fixed a reported error where and incorrect GPE number was passed 9511to the GPE dispatch handler. This value is only used for error 9512output, however. Used this opportunity to clean up and streamline 9513the GPE dispatch code. 9514 9515Code and Data Size: Current and previous core subsystem library 9516sizes are shown below. These are the code and data sizes for the 9517acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9518these values do not include any ACPI driver or OSPM code. The 9519 9520debug version of the code includes the debug output trace 9521mechanism and has a much larger code and data size. Note that 9522these values will vary depending on the efficiency of the compiler 9523and the compiler options used during generation. 9524 9525 Previous Release (20031002): 9526 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 9527 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 9528 Current Release: 9529 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 9530 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 9531 9532 95332) iASL Compiler/Disassembler: 9534 9535Updated the iASL compiler to return an error if the operand to the 9536Stall() operator is larger than 255. 9537 9538 9539---------------------------------------- 954002 October 2003. Summary of changes for version 20031002: 9541 9542 95431) ACPI CA Core Subsystem: 9544 9545Fixed a problem with Index Fields where the index was not 9546incremented for fields that require multiple writes to the 9547index/data registers (Fields that are wider than the data 9548register.) 9549 9550Fixed a problem with all Field objects where a write could go 9551beyond the end-of-field if the field was larger than the access 9552granularity and therefore required multiple writes to complete the 9553request. An extra write beyond the end of the field could happen 9554inadvertently. 9555 9556Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 9557would incorrectly be returned if the width of the Data Register 9558was larger than the specified field access width. 9559 9560Completed fixes for LoadTable() and Unload() and verified their 9561operation. Implemented full support for the "DdbHandle" object 9562throughout the ACPI CA subsystem. 9563 9564Implemented full support for the MADT and ECDT tables in the ACPI 9565CA header files. Even though these tables are not directly 9566consumed by ACPI CA, the header definitions are useful for ACPI 9567device drivers. 9568 9569Integrated resource descriptor fixes posted to the Linux ACPI 9570list. This included checks for minimum descriptor length, and 9571support for trailing NULL strings within descriptors that have 9572optional string elements. 9573 9574Code and Data Size: Current and previous core subsystem library 9575sizes are shown below. These are the code and data sizes for the 9576acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9577these values do not include any ACPI driver or OSPM code. The 9578debug version of the code includes the debug output trace 9579mechanism and has a much larger code and data size. Note that 9580these values will vary depending on the efficiency of the compiler 9581and the compiler options used during generation. 9582 9583 Previous Release (20030918): 9584 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 9585 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 9586 Current Release: 9587 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 9588 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 9589 9590 95912) iASL Compiler: 9592 9593Implemented detection of non-ASCII characters within the input 9594source ASL file. This catches attempts to compile binary (AML) 9595files early in the compile, with an informative error message. 9596 9597Fixed a problem where the disassembler would fault if the output 9598filename could not be generated or if the output file could not be 9599opened. 9600 9601---------------------------------------- 960218 September 2003. Summary of changes for version 20030918: 9603 9604 96051) ACPI CA Core Subsystem: 9606 9607Found and fixed a longstanding problem with the late execution of 9608the various deferred AML opcodes (such as Operation Regions, 9609Buffer Fields, Buffers, and Packages). If the name string 9610specified for the name of the new object placed the object in a 9611scope other than the current scope, the initialization/execution 9612of the opcode failed. The solution to this problem was to 9613implement a mechanism where the late execution of such opcodes 9614does not attempt to lookup/create the name a second time in an 9615incorrect scope. This fixes the "region size computed 9616incorrectly" problem. 9617 9618Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 9619Global Lock AE_BAD_PARAMETER error. 9620 9621Fixed several 64-bit issues with prototypes, casting and data 9622types. 9623 9624Removed duplicate prototype from acdisasm.h 9625 9626Fixed an issue involving EC Operation Region Detach (Shaohua Li) 9627 9628Code and Data Size: Current and previous core subsystem library 9629sizes are shown below. These are the code and data sizes for the 9630acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9631these values do not include any ACPI driver or OSPM code. The 9632debug version of the code includes the debug output trace 9633mechanism and has a much larger code and data size. Note that 9634these values will vary depending on the efficiency of the compiler 9635and the compiler options used during generation. 9636 9637 Previous Release: 9638 9639 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 9640 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 9641 Current Release: 9642 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 9643 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 9644 9645 96462) Linux: 9647 9648Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 9649correct sleep time in seconds. 9650 9651---------------------------------------- 965214 July 2003. Summary of changes for version 20030619: 9653 96541) ACPI CA Core Subsystem: 9655 9656Parse SSDTs in order discovered, as opposed to reverse order 9657(Hrvoje Habjanic) 9658 9659Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 9660Klausner, 9661 Nate Lawson) 9662 9663 96642) Linux: 9665 9666Dynamically allocate SDT list (suggested by Andi Kleen) 9667 9668proc function return value cleanups (Andi Kleen) 9669 9670Correctly handle NMI watchdog during long stalls (Andrew Morton) 9671 9672Make it so acpismp=force works (reported by Andrew Morton) 9673 9674 9675---------------------------------------- 967619 June 2003. Summary of changes for version 20030619: 9677 96781) ACPI CA Core Subsystem: 9679 9680Fix To/FromBCD, eliminating the need for an arch-specific #define. 9681 9682Do not acquire a semaphore in the S5 shutdown path. 9683 9684Fix ex_digits_needed for 0. (Takayoshi Kochi) 9685 9686Fix sleep/stall code reversal. (Andi Kleen) 9687 9688Revert a change having to do with control method calling 9689semantics. 9690 96912) Linux: 9692 9693acpiphp update (Takayoshi Kochi) 9694 9695Export acpi_disabled for sonypi (Stelian Pop) 9696 9697Mention acpismp=force in config help 9698 9699Re-add acpitable.c and acpismp=force. This improves backwards 9700 9701compatibility and also cleans up the code to a significant degree. 9702 9703Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 9704 9705---------------------------------------- 970622 May 2003. Summary of changes for version 20030522: 9707 97081) ACPI CA Core Subsystem: 9709 9710Found and fixed a reported problem where an AE_NOT_FOUND error 9711occurred occasionally during _BST evaluation. This turned out to 9712be an Owner ID allocation issue where a called method did not get 9713a new ID assigned to it. Eventually, (after 64k calls), the Owner 9714ID UINT16 would wraparound so that the ID would be the same as the 9715caller's and the called method would delete the caller's 9716namespace. 9717 9718Implemented extended error reporting for control methods that are 9719aborted due to a run-time exception. Output includes the exact 9720AML instruction that caused the method abort, a dump of the method 9721locals and arguments at the time of the abort, and a trace of all 9722nested control method calls. 9723 9724Modified the interpreter to allow the creation of buffers of zero 9725length from the AML code. Implemented new code to ensure that no 9726attempt is made to actually allocate a memory buffer (of length 9727zero) - instead, a simple buffer object with a NULL buffer pointer 9728and length zero is created. A warning is no longer issued when 9729the AML attempts to create a zero-length buffer. 9730 9731Implemented a workaround for the "leading asterisk issue" in 9732_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 9733asterisk is automatically removed if present in any HID, UID, or 9734CID strings. The iASL compiler will still flag this asterisk as 9735an error, however. 9736 9737Implemented full support for _CID methods that return a package of 9738multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 9739now additionally returns a device _CID list if present. This 9740required a change to the external interface in order to pass an 9741ACPI_BUFFER object as a parameter since the _CID list is of 9742variable length. 9743 9744Fixed a problem with the new AE_SAME_HANDLER exception where 9745handler initialization code did not know about this exception. 9746 9747Code and Data Size: Current and previous core subsystem library 9748sizes are shown below. These are the code and data sizes for the 9749acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 9750these values do not include any ACPI driver or OSPM code. The 9751debug version of the code includes the debug output trace 9752mechanism and has a much larger code and data size. Note that 9753these values will vary depending on the efficiency of the compiler 9754and the compiler options used during generation. 9755 9756 Previous Release (20030509): 9757 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 9758 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 9759 Current Release: 9760 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 9761 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 9762 9763 97642) Linux: 9765 9766Fixed a bug in which we would reinitialize the ACPI interrupt 9767after it was already working, thus disabling all ACPI and the IRQs 9768for any other device sharing the interrupt. (Thanks to Stian 9769Jordet) 9770 9771Toshiba driver update (John Belmonte) 9772 9773Return only 0 or 1 for our interrupt handler status (Andrew 9774Morton) 9775 9776 97773) iASL Compiler: 9778 9779Fixed a reported problem where multiple (nested) ElseIf() 9780statements were not handled correctly by the compiler, resulting 9781in incorrect warnings and incorrect AML code. This was a problem 9782in both the ASL parser and the code generator. 9783 9784 97854) Documentation: 9786 9787Added changes to existing interfaces, new exception codes, and new 9788text concerning reference count object management versus garbage 9789collection. 9790 9791---------------------------------------- 979209 May 2003. Summary of changes for version 20030509. 9793 9794 97951) ACPI CA Core Subsystem: 9796 9797Changed the subsystem initialization sequence to hold off 9798installation of address space handlers until the hardware has been 9799initialized and the system has entered ACPI mode. This is because 9800the installation of space handlers can cause _REG methods to be 9801run. Previously, the _REG methods could potentially be run before 9802ACPI mode was enabled. 9803 9804Fixed some memory leak issues related to address space handler and 9805notify handler installation. There were some problems with the 9806reference count mechanism caused by the fact that the handler 9807objects are shared across several namespace objects. 9808 9809Fixed a reported problem where reference counts within the 9810namespace were not properly updated when named objects created by 9811method execution were deleted. 9812 9813Fixed a reported problem where multiple SSDTs caused a deletion 9814issue during subsystem termination. Restructured the table data 9815structures to simplify the linked lists and the related code. 9816 9817Fixed a problem where the table ID associated with secondary 9818tables (SSDTs) was not being propagated into the namespace objects 9819created by those tables. This would only present a problem for 9820tables that are unloaded at run-time, however. 9821 9822Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 9823type as the length parameter (instead of UINT32). 9824 9825Solved a long-standing problem where an ALREADY_EXISTS error 9826appears on various systems. This problem could happen when there 9827are multiple PCI_Config operation regions under a single PCI root 9828bus. This doesn't happen very frequently, but there are some 9829systems that do this in the ASL. 9830 9831Fixed a reported problem where the internal DeleteNode function 9832was incorrectly handling the case where a namespace node was the 9833first in the parent's child list, and had additional peers (not 9834the only child, but first in the list of children.) 9835 9836Code and Data Size: Current core subsystem library sizes are shown 9837below. These are the code and data sizes for the acpica.lib 9838produced by the Microsoft Visual C++ 6.0 compiler, and these 9839values do not include any ACPI driver or OSPM code. The debug 9840version of the code includes the debug output trace mechanism and 9841has a much larger code and data size. Note that these values will 9842vary depending on the efficiency of the compiler and the compiler 9843options used during generation. 9844 9845 Previous Release 9846 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 9847 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 9848 Current Release: 9849 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 9850 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 9851 9852 98532) Linux: 9854 9855Allow ":" in OS override string (Ducrot Bruno) 9856 9857Kobject fix (Greg KH) 9858 9859 98603 iASL Compiler/Disassembler: 9861 9862Fixed a problem in the generation of the C source code files (AML 9863is emitted in C source statements for BIOS inclusion) where the 9864Ascii dump that appears within a C comment at the end of each line 9865could cause a compile time error if the AML sequence happens to 9866have an open comment or close comment sequence embedded. 9867 9868 9869---------------------------------------- 987024 April 2003. Summary of changes for version 20030424. 9871 9872 98731) ACPI CA Core Subsystem: 9874 9875Support for big-endian systems has been implemented. Most of the 9876support has been invisibly added behind big-endian versions of the 9877ACPI_MOVE_* macros. 9878 9879Fixed a problem in AcpiHwDisableGpeBlock() and 9880AcpiHwClearGpeBlock() where an incorrect offset was passed to the 9881low level hardware write routine. The offset parameter was 9882actually eliminated from the low level read/write routines because 9883they had become obsolete. 9884 9885Fixed a problem where a handler object was deleted twice during 9886the removal of a fixed event handler. 9887 9888 98892) Linux: 9890 9891A fix for SMP systems with link devices was contributed by 9892 9893Compaq's Dan Zink. 9894 9895(2.5) Return whether we handled the interrupt in our IRQ handler. 9896(Linux ISRs no longer return void, so we can propagate the handler 9897return value from the ACPI CA core back to the OS.) 9898 9899 9900 99013) Documentation: 9902 9903The ACPI CA Programmer Reference has been updated to reflect new 9904interfaces and changes to existing interfaces. 9905 9906---------------------------------------- 990728 March 2003. Summary of changes for version 20030328. 9908 99091) ACPI CA Core Subsystem: 9910 9911The GPE Block Device support has been completed. New interfaces 9912are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 9913interfaces (enable, disable, clear, getstatus) have been split 9914into separate interfaces for Fixed Events and General Purpose 9915Events (GPEs) in order to support GPE Block Devices properly. 9916 9917Fixed a problem where the error message "Failed to acquire 9918semaphore" would appear during operations on the embedded 9919controller (EC). 9920 9921Code and Data Size: Current core subsystem library sizes are shown 9922below. These are the code and data sizes for the acpica.lib 9923produced by the Microsoft Visual C++ 6.0 compiler, and these 9924values do not include any ACPI driver or OSPM code. The debug 9925version of the code includes the debug output trace mechanism and 9926has a much larger code and data size. Note that these values will 9927vary depending on the efficiency of the compiler and the compiler 9928options used during generation. 9929 9930 Previous Release 9931 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 9932 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 9933 Current Release: 9934 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 9935 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 9936 9937 9938---------------------------------------- 993928 February 2003. Summary of changes for version 20030228. 9940 9941 99421) ACPI CA Core Subsystem: 9943 9944The GPE handling and dispatch code has been completely overhauled 9945in preparation for support of GPE Block Devices (ID ACPI0006). 9946This affects internal data structures and code only; there should 9947be no differences visible externally. One new file has been 9948added, evgpeblk.c 9949 9950The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 9951fields that are used to determine the GPE block lengths. The 9952REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 9953structures are ignored. This is per the ACPI specification but it 9954isn't very clear. The full 256 Block 0/1 GPEs are now supported 9955(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 9956 9957In the SCI interrupt handler, removed the read of the PM1_CONTROL 9958register to look at the SCI_EN bit. On some machines, this read 9959causes an SMI event and greatly slows down SCI events. (This may 9960in fact be the cause of slow battery status response on some 9961systems.) 9962 9963Fixed a problem where a store of a NULL string to a package object 9964could cause the premature deletion of the object. This was seen 9965during execution of the battery _BIF method on some systems, 9966resulting in no battery data being returned. 9967 9968Added AcpiWalkResources interface to simplify parsing of resource 9969lists. 9970 9971Code and Data Size: Current core subsystem library sizes are shown 9972below. These are the code and data sizes for the acpica.lib 9973produced by the Microsoft Visual C++ 6.0 compiler, and these 9974values do not include any ACPI driver or OSPM code. The debug 9975version of the code includes the debug output trace mechanism and 9976has a much larger code and data size. Note that these values will 9977vary depending on the efficiency of the compiler and the compiler 9978options used during generation. 9979 9980 Previous Release 9981 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 9982 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 9983 Current Release: 9984 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 9985 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 9986 9987 99882) Linux 9989 9990S3 fixes (Ole Rohne) 9991 9992Update ACPI PHP driver with to use new acpi_walk_resource API 9993(Bjorn Helgaas) 9994 9995Add S4BIOS support (Pavel Machek) 9996 9997Map in entire table before performing checksum (John Stultz) 9998 9999Expand the mem= cmdline to allow the specification of reserved and 10000ACPI DATA blocks (Pavel Machek) 10001 10002Never use ACPI on VISWS 10003 10004Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 10005 10006Revert a change that allowed P_BLK lengths to be 4 or 5. This is 10007causing us to think that some systems support C2 when they really 10008don't. 10009 10010Do not count processor objects for non-present CPUs (Thanks to 10011Dominik Brodowski) 10012 10013 100143) iASL Compiler: 10015 10016Fixed a problem where ASL include files could not be found and 10017opened. 10018 10019Added support for the _PDC reserved name. 10020 10021 10022---------------------------------------- 1002322 January 2003. Summary of changes for version 20030122. 10024 10025 100261) ACPI CA Core Subsystem: 10027 10028Added a check for constructs of the form: Store (Local0, Local0) 10029where Local0 is not initialized. Apparently, some BIOS 10030programmers believe that this is a NOOP. Since this store doesn't 10031do anything anyway, the new prototype behavior will ignore this 10032error. This is a case where we can relax the strict checking in 10033the interpreter in the name of compatibility. 10034 10035 100362) Linux 10037 10038The AcpiSrc Source Conversion Utility has been released with the 10039Linux package for the first time. This is the utility that is 10040used to convert the ACPI CA base source code to the Linux version. 10041 10042(Both) Handle P_BLK lengths shorter than 6 more gracefully 10043 10044(Both) Move more headers to include/acpi, and delete an unused 10045header. 10046 10047(Both) Move drivers/acpi/include directory to include/acpi 10048 10049(Both) Boot functions don't use cmdline, so don't pass it around 10050 10051(Both) Remove include of unused header (Adrian Bunk) 10052 10053(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 10054the 10055former now also includes the latter, acpiphp.h only needs the one, 10056now. 10057 10058(2.5) Make it possible to select method of bios restoring after S3 10059resume. [=> no more ugly ifdefs] (Pavel Machek) 10060 10061(2.5) Make proc write interfaces work (Pavel Machek) 10062 10063(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 10064 10065(2.5) Break out ACPI Perf code into its own module, under cpufreq 10066(Dominik Brodowski) 10067 10068(2.4) S4BIOS support (Ducrot Bruno) 10069 10070(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 10071Visinoni) 10072 10073 100743) iASL Compiler: 10075 10076Added support to disassemble SSDT and PSDTs. 10077 10078Implemented support to obtain SSDTs from the Windows registry if 10079available. 10080 10081 10082---------------------------------------- 1008309 January 2003. Summary of changes for version 20030109. 10084 100851) ACPI CA Core Subsystem: 10086 10087Changed the behavior of the internal Buffer-to-String conversion 10088function. The current ACPI specification states that the contents 10089of the buffer are "converted to a string of two-character 10090hexadecimal numbers, each separated by a space". Unfortunately, 10091this definition is not backwards compatible with existing ACPI 1.0 10092implementations (although the behavior was not defined in the ACPI 100931.0 specification). The new behavior simply copies data from the 10094buffer to the string until a null character is found or the end of 10095the buffer is reached. The new String object is always null 10096terminated. This problem was seen during the generation of _BIF 10097battery data where incorrect strings were returned for battery 10098type, etc. This will also require an errata to the ACPI 10099specification. 10100 10101Renamed all instances of NATIVE_UINT and NATIVE_INT to 10102ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 10103 10104Copyright in all module headers (both Linux and non-Linux) has be 10105updated to 2003. 10106 10107Code and Data Size: Current core subsystem library sizes are shown 10108below. These are the code and data sizes for the acpica.lib 10109produced by the Microsoft Visual C++ 6.0 compiler, and these 10110values do not include any ACPI driver or OSPM code. The debug 10111version of the code includes the debug output trace mechanism and 10112has a much larger code and data size. Note that these values will 10113vary depending on the efficiency of the compiler and the compiler 10114options used during generation. 10115 10116 Previous Release 10117 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 10118 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 10119 Current Release: 10120 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 10121 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 10122 10123 101242) Linux 10125 10126Fixed an oops on module insertion/removal (Matthew Tippett) 10127 10128(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 10129 10130(2.5) Replace pr_debug (Randy Dunlap) 10131 10132(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 10133 10134(Both) Eliminate spawning of thread from timer callback, in favor 10135of schedule_work() 10136 10137(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 10138 10139(Both) Added define for Fixed Function HW region (Matthew Wilcox) 10140 10141(Both) Add missing statics to button.c (Pavel Machek) 10142 10143Several changes have been made to the source code translation 10144utility that generates the Linux Code in order to make the code 10145more "Linux-like": 10146 10147All typedefs on structs and unions have been removed in keeping 10148with the Linux coding style. 10149 10150Removed the non-Linux SourceSafe module revision number from each 10151module header. 10152 10153Completed major overhaul of symbols to be lowercased for linux. 10154Doubled the number of symbols that are lowercased. 10155 10156Fixed a problem where identifiers within procedure headers and 10157within quotes were not fully lower cased (they were left with a 10158starting capital.) 10159 10160Some C macros whose only purpose is to allow the generation of 16- 10161bit code are now completely removed in the Linux code, increasing 10162readability and maintainability. 10163 10164---------------------------------------- 10165 1016612 December 2002. Summary of changes for version 20021212. 10167 10168 101691) ACPI CA Core Subsystem: 10170 10171Fixed a problem where the creation of a zero-length AML Buffer 10172would cause a fault. 10173 10174Fixed a problem where a Buffer object that pointed to a static AML 10175buffer (in an ACPI table) could inadvertently be deleted, causing 10176memory corruption. 10177 10178Fixed a problem where a user buffer (passed in to the external 10179ACPI CA interfaces) could be overwritten if the buffer was too 10180small to complete the operation, causing memory corruption. 10181 10182Fixed a problem in the Buffer-to-String conversion code where a 10183string of length one was always returned, regardless of the size 10184of the input Buffer object. 10185 10186Removed the NATIVE_CHAR data type across the entire source due to 10187lack of need and lack of consistent use. 10188 10189Code and Data Size: Current core subsystem library sizes are shown 10190below. These are the code and data sizes for the acpica.lib 10191produced by the Microsoft Visual C++ 6.0 compiler, and these 10192values do not include any ACPI driver or OSPM code. The debug 10193version of the code includes the debug output trace mechanism and 10194has a much larger code and data size. Note that these values will 10195vary depending on the efficiency of the compiler and the compiler 10196options used during generation. 10197 10198 Previous Release 10199 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 10200 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 10201 Current Release: 10202 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 10203 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 10204 10205 10206---------------------------------------- 1020705 December 2002. Summary of changes for version 20021205. 10208 102091) ACPI CA Core Subsystem: 10210 10211Fixed a problem where a store to a String or Buffer object could 10212cause corruption of the DSDT if the object type being stored was 10213the same as the target object type and the length of the object 10214being stored was equal to or smaller than the original (existing) 10215target object. This was seen to cause corruption of battery _BIF 10216buffers if the _BIF method modified the buffer on the fly. 10217 10218Fixed a problem where an internal error was generated if a control 10219method invocation was used in an OperationRegion, Buffer, or 10220Package declaration. This was caused by the deferred parsing of 10221the control method and thus the deferred creation of the internal 10222method object. The solution to this problem was to create the 10223internal method object at the moment the method is encountered in 10224the first pass - so that subsequent references to the method will 10225able to obtain the required parameter count and thus properly 10226parse the method invocation. This problem presented itself as an 10227AE_AML_INTERNAL during the pass 1 parse phase during table load. 10228 10229Fixed a problem where the internal String object copy routine did 10230not always allocate sufficient memory for the target String object 10231and caused memory corruption. This problem was seen to cause 10232"Allocation already present in list!" errors as memory allocation 10233became corrupted. 10234 10235Implemented a new function for the evaluation of namespace objects 10236that allows the specification of the allowable return object 10237types. This simplifies a lot of code that checks for a return 10238object of one or more specific objects returned from the 10239evaluation (such as _STA, etc.) This may become and external 10240function if it would be useful to ACPI-related drivers. 10241 10242Completed another round of prefixing #defines with "ACPI_" for 10243clarity. 10244 10245Completed additional code restructuring to allow more modular 10246linking for iASL compiler and AcpiExec. Several files were split 10247creating new files. New files: nsparse.c dsinit.c evgpe.c 10248 10249Implemented an abort mechanism to terminate an executing control 10250method via the AML debugger. This feature is useful for debugging 10251control methods that depend (wait) for specific hardware 10252responses. 10253 10254Code and Data Size: Current core subsystem library sizes are shown 10255below. These are the code and data sizes for the acpica.lib 10256produced by the Microsoft Visual C++ 6.0 compiler, and these 10257values do not include any ACPI driver or OSPM code. The debug 10258version of the code includes the debug output trace mechanism and 10259has a much larger code and data size. Note that these values will 10260vary depending on the efficiency of the compiler and the compiler 10261options used during generation. 10262 10263 Previous Release 10264 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 10265 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 10266 Current Release: 10267 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 10268 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 10269 10270 102712) iASL Compiler/Disassembler 10272 10273Fixed a compiler code generation problem for "Interrupt" Resource 10274Descriptors. If specified in the ASL, the optional "Resource 10275Source Index" and "Resource Source" fields were not inserted into 10276the correct location within the AML resource descriptor, creating 10277an invalid descriptor. 10278 10279Fixed a disassembler problem for "Interrupt" resource descriptors. 10280The optional "Resource Source Index" and "Resource Source" fields 10281were ignored. 10282 10283 10284---------------------------------------- 1028522 November 2002. Summary of changes for version 20021122. 10286 10287 102881) ACPI CA Core Subsystem: 10289 10290Fixed a reported problem where an object stored to a Method Local 10291or Arg was not copied to a new object during the store - the 10292object pointer was simply copied to the Local/Arg. This caused 10293all subsequent operations on the Local/Arg to also affect the 10294original source of the store operation. 10295 10296Fixed a problem where a store operation to a Method Local or Arg 10297was not completed properly if the Local/Arg contained a reference 10298(from RefOf) to a named field. The general-purpose store-to- 10299namespace-node code is now used so that this case is handled 10300automatically. 10301 10302Fixed a problem where the internal object copy routine would cause 10303a protection fault if the object being copied was a Package and 10304contained either 1) a NULL package element or 2) a nested sub- 10305package. 10306 10307Fixed a problem with the GPE initialization that resulted from an 10308ambiguity in the ACPI specification. One section of the 10309specification states that both the address and length of the GPE 10310block must be zero if the block is not supported. Another section 10311implies that only the address need be zero if the block is not 10312supported. The code has been changed so that both the address and 10313the length must be non-zero to indicate a valid GPE block (i.e., 10314if either the address or the length is zero, the GPE block is 10315invalid.) 10316 10317Code and Data Size: Current core subsystem library sizes are shown 10318below. These are the code and data sizes for the acpica.lib 10319produced by the Microsoft Visual C++ 6.0 compiler, and these 10320values do not include any ACPI driver or OSPM code. The debug 10321version of the code includes the debug output trace mechanism and 10322has a much larger code and data size. Note that these values will 10323vary depending on the efficiency of the compiler and the compiler 10324options used during generation. 10325 10326 Previous Release 10327 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 10328 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 10329 Current Release: 10330 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 10331 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 10332 10333 103342) Linux 10335 10336Cleaned up EC driver. Exported an external EC read/write 10337interface. By going through this, other drivers (most notably 10338sonypi) will be able to serialize access to the EC. 10339 10340 103413) iASL Compiler/Disassembler 10342 10343Implemented support to optionally generate include files for both 10344ASM and C (the -i switch). This simplifies BIOS development by 10345automatically creating include files that contain external 10346declarations for the symbols that are created within the 10347 10348(optionally generated) ASM and C AML source files. 10349 10350 10351---------------------------------------- 1035215 November 2002. Summary of changes for version 20021115. 10353 103541) ACPI CA Core Subsystem: 10355 10356Fixed a memory leak problem where an error during resolution of 10357 10358method arguments during a method invocation from another method 10359failed to cleanup properly by deleting all successfully resolved 10360argument objects. 10361 10362Fixed a problem where the target of the Index() operator was not 10363correctly constructed if the source object was a package. This 10364problem has not been detected because the use of a target operand 10365with Index() is very rare. 10366 10367Fixed a problem with the Index() operator where an attempt was 10368made to delete the operand objects twice. 10369 10370Fixed a problem where an attempt was made to delete an operand 10371twice during execution of the CondRefOf() operator if the target 10372did not exist. 10373 10374Implemented the first of perhaps several internal create object 10375functions that create and initialize a specific object type. This 10376consolidates duplicated code wherever the object is created, thus 10377shrinking the size of the subsystem. 10378 10379Implemented improved debug/error messages for errors that occur 10380during nested method invocations. All executing method pathnames 10381are displayed (with the error) as the call stack is unwound - thus 10382simplifying debug. 10383 10384Fixed a problem introduced in the 10/02 release that caused 10385premature deletion of a buffer object if a buffer was used as an 10386ASL operand where an integer operand is required (Thus causing an 10387implicit object conversion from Buffer to Integer.) The change in 10388the 10/02 release was attempting to fix a memory leak (albeit 10389incorrectly.) 10390 10391Code and Data Size: Current core subsystem library sizes are shown 10392below. These are the code and data sizes for the acpica.lib 10393produced by the Microsoft Visual C++ 6.0 compiler, and these 10394values do not include any ACPI driver or OSPM code. The debug 10395version of the code includes the debug output trace mechanism and 10396has a much larger code and data size. Note that these values will 10397vary depending on the efficiency of the compiler and the compiler 10398options used during generation. 10399 10400 Previous Release 10401 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 10402 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 10403 Current Release: 10404 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 10405 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 10406 10407 104082) Linux 10409 10410Changed the implementation of the ACPI semaphores to use down() 10411instead of down_interruptable(). It is important that the 10412execution of ACPI control methods not be interrupted by signals. 10413Methods must run to completion, or the system may be left in an 10414unknown/unstable state. 10415 10416Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 10417(Shawn Starr) 10418 10419 104203) iASL Compiler/Disassembler 10421 10422 10423Changed the default location of output files. All output files 10424are now placed in the current directory by default instead of in 10425the directory of the source file. This change may affect some 10426existing makefiles, but it brings the behavior of the compiler in 10427line with other similar tools. The location of the output files 10428can be overridden with the -p command line switch. 10429 10430 10431---------------------------------------- 1043211 November 2002. Summary of changes for version 20021111. 10433 10434 104350) ACPI Specification 2.0B is released and is now available at: 10436http://www.acpi.info/index.html 10437 10438 104391) ACPI CA Core Subsystem: 10440 10441Implemented support for the ACPI 2.0 SMBus Operation Regions. 10442This includes the early detection and handoff of the request to 10443the SMBus region handler (avoiding all of the complex field 10444support code), and support for the bidirectional return packet 10445from an SMBus write operation. This paves the way for the 10446development of SMBus drivers in each host operating system. 10447 10448Fixed a problem where the semaphore WAIT_FOREVER constant was 10449defined as 32 bits, but must be 16 bits according to the ACPI 10450specification. This had the side effect of causing ASL 10451Mutex/Event timeouts even though the ASL code requested a wait 10452forever. Changed all internal references to the ACPI timeout 10453parameter to 16 bits to prevent future problems. Changed the name 10454of WAIT_FOREVER to ACPI_WAIT_FOREVER. 10455 10456Code and Data Size: Current core subsystem library sizes are shown 10457below. These are the code and data sizes for the acpica.lib 10458produced by the Microsoft Visual C++ 6.0 compiler, and these 10459values do not include any ACPI driver or OSPM code. The debug 10460version of the code includes the debug output trace mechanism and 10461has a much larger code and data size. Note that these values will 10462vary depending on the efficiency of the compiler and the compiler 10463options used during generation. 10464 10465 Previous Release 10466 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 10467 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 10468 Current Release: 10469 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 10470 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 10471 10472 104732) Linux 10474 10475Module loading/unloading fixes (John Cagle) 10476 10477 104783) iASL Compiler/Disassembler 10479 10480Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 10481 10482Implemented support for the disassembly of all SMBus protocol 10483keywords (SMBQuick, SMBWord, etc.) 10484 10485---------------------------------------- 1048601 November 2002. Summary of changes for version 20021101. 10487 10488 104891) ACPI CA Core Subsystem: 10490 10491Fixed a problem where platforms that have a GPE1 block but no GPE0 10492block were not handled correctly. This resulted in a "GPE 10493overlap" error message. GPE0 is no longer required. 10494 10495Removed code added in the previous release that inserted nodes 10496into the namespace in alphabetical order. This caused some side- 10497effects on various machines. The root cause of the problem is 10498still under investigation since in theory, the internal ordering 10499of the namespace nodes should not matter. 10500 10501 10502Enhanced error reporting for the case where a named object is not 10503found during control method execution. The full ACPI namepath 10504(name reference) of the object that was not found is displayed in 10505this case. 10506 10507Note: as a result of the overhaul of the namespace object types in 10508the previous release, the namespace nodes for the predefined 10509scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 10510instead of ACPI_TYPE_ANY. This simplifies the namespace 10511management code but may affect code that walks the namespace tree 10512looking for specific object types. 10513 10514Code and Data Size: Current core subsystem library sizes are shown 10515below. These are the code and data sizes for the acpica.lib 10516produced by the Microsoft Visual C++ 6.0 compiler, and these 10517values do not include any ACPI driver or OSPM code. The debug 10518version of the code includes the debug output trace mechanism and 10519has a much larger code and data size. Note that these values will 10520vary depending on the efficiency of the compiler and the compiler 10521options used during generation. 10522 10523 Previous Release 10524 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 10525 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 10526 Current Release: 10527 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 10528 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 10529 10530 105312) Linux 10532 10533Fixed a problem introduced in the previous release where the 10534Processor and Thermal objects were not recognized and installed in 10535/proc. This was related to the scope type change described above. 10536 10537 105383) iASL Compiler/Disassembler 10539 10540Implemented the -g option to get all of the required ACPI tables 10541from the registry and save them to files (Windows version of the 10542compiler only.) The required tables are the FADT, FACS, and DSDT. 10543 10544Added ACPI table checksum validation during table disassembly in 10545order to catch corrupted tables. 10546 10547 10548---------------------------------------- 1054922 October 2002. Summary of changes for version 20021022. 10550 105511) ACPI CA Core Subsystem: 10552 10553Implemented a restriction on the Scope operator that the target 10554must already exist in the namespace at the time the operator is 10555encountered (during table load or method execution). In other 10556words, forward references are not allowed and Scope() cannot 10557create a new object. This changes the previous behavior where the 10558interpreter would create the name if not found. This new behavior 10559correctly enables the search-to-root algorithm during namespace 10560lookup of the target name. Because of this upsearch, this fixes 10561the known Compaq _SB_.OKEC problem and makes both the AML 10562interpreter and iASL compiler compatible with other ACPI 10563implementations. 10564 10565Completed a major overhaul of the internal ACPI object types for 10566the ACPI Namespace and the associated operand objects. Many of 10567these types had become obsolete with the introduction of the two- 10568pass namespace load. This cleanup simplifies the code and makes 10569the entire namespace load mechanism much clearer and easier to 10570understand. 10571 10572Improved debug output for tracking scope opening/closing to help 10573diagnose scoping issues. The old scope name as well as the new 10574scope name are displayed. Also improved error messages for 10575problems with ASL Mutex objects and error messages for GPE 10576problems. 10577 10578Cleaned up the namespace dump code, removed obsolete code. 10579 10580All string output (for all namespace/object dumps) now uses the 10581common ACPI string output procedure which handles escapes properly 10582and does not emit non-printable characters. 10583 10584Fixed some issues with constants in the 64-bit version of the 10585local C library (utclib.c) 10586 10587 105882) Linux 10589 10590EC Driver: No longer attempts to acquire the Global Lock at 10591interrupt level. 10592 10593 105943) iASL Compiler/Disassembler 10595 10596Implemented ACPI 2.0B grammar change that disallows all Type 1 and 105972 opcodes outside of a control method. This means that the 10598"executable" operators (versus the "namespace" operators) cannot 10599be used at the table level; they can only be used within a control 10600method. 10601 10602Implemented the restriction on the Scope() operator where the 10603target must already exist in the namespace at the time the 10604operator is encountered (during ASL compilation). In other words, 10605forward references are not allowed and Scope() cannot create a new 10606object. This makes the iASL compiler compatible with other ACPI 10607implementations and makes the Scope() implementation adhere to the 10608ACPI specification. 10609 10610Fixed a problem where namepath optimization for the Alias operator 10611was optimizing the wrong path (of the two namepaths.) This caused 10612a "Missing alias link" error message. 10613 10614Fixed a problem where an "unknown reserved name" warning could be 10615incorrectly generated for names like "_SB" when the trailing 10616underscore is not used in the original ASL. 10617 10618Fixed a problem where the reserved name check did not handle 10619NamePaths with multiple NameSegs correctly. The first nameseg of 10620the NamePath was examined instead of the last NameSeg. 10621 10622 10623---------------------------------------- 10624 1062502 October 2002. Summary of changes for this release. 10626 10627 106281) ACPI CA Core Subsystem version 20021002: 10629 10630Fixed a problem where a store/copy of a string to an existing 10631string did not always set the string length properly in the String 10632object. 10633 10634Fixed a reported problem with the ToString operator where the 10635behavior was identical to the ToHexString operator instead of just 10636simply converting a raw buffer to a string data type. 10637 10638Fixed a problem where CopyObject and the other "explicit" 10639conversion operators were not updating the internal namespace node 10640type as part of the store operation. 10641 10642Fixed a memory leak during implicit source operand conversion 10643where the original object was not deleted if it was converted to a 10644new object of a different type. 10645 10646Enhanced error messages for all problems associated with namespace 10647lookups. Common procedure generates and prints the lookup name as 10648well as the formatted status. 10649 10650Completed implementation of a new design for the Alias support 10651within the namespace. The existing design did not handle the case 10652where a new object was assigned to one of the two names due to the 10653use of an explicit conversion operator, resulting in the two names 10654pointing to two different objects. The new design simply points 10655the Alias name to the original name node - not to the object. 10656This results in a level of indirection that must be handled in the 10657name resolution mechanism. 10658 10659Code and Data Size: Current core subsystem library sizes are shown 10660below. These are the code and data sizes for the acpica.lib 10661produced by the Microsoft Visual C++ 6.0 compiler, and these 10662values do not include any ACPI driver or OSPM code. The debug 10663version of the code includes the debug output trace mechanism and 10664has a larger code and data size. Note that these values will vary 10665depending on the efficiency of the compiler and the compiler 10666options used during generation. 10667 10668 Previous Release 10669 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 10670 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 10671 Current Release: 10672 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 10673 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 10674 10675 106762) Linux 10677 10678Initialize thermal driver's timer before it is used. (Knut 10679Neumann) 10680 10681Allow handling negative celsius values. (Kochi Takayoshi) 10682 10683Fix thermal management and make trip points. R/W (Pavel Machek) 10684 10685Fix /proc/acpi/sleep. (P. Christeas) 10686 10687IA64 fixes. (David Mosberger) 10688 10689Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 10690 10691Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 10692Brodowski) 10693 10694 106953) iASL Compiler/Disassembler 10696 10697Clarified some warning/error messages. 10698 10699 10700---------------------------------------- 1070118 September 2002. Summary of changes for this release. 10702 10703 107041) ACPI CA Core Subsystem version 20020918: 10705 10706Fixed a reported problem with reference chaining (via the Index() 10707and RefOf() operators) in the ObjectType() and SizeOf() operators. 10708The definition of these operators includes the dereferencing of 10709all chained references to return information on the base object. 10710 10711Fixed a problem with stores to indexed package elements - the 10712existing code would not complete the store if an "implicit 10713conversion" was not performed. In other words, if the existing 10714object (package element) was to be replaced completely, the code 10715didn't handle this case. 10716 10717Relaxed typechecking on the ASL "Scope" operator to allow the 10718target name to refer to an object of type Integer, String, or 10719Buffer, in addition to the scoping object types (Device, 10720predefined Scopes, Processor, PowerResource, and ThermalZone.) 10721This allows existing AML code that has workarounds for a bug in 10722Windows to function properly. A warning is issued, however. This 10723affects both the AML interpreter and the iASL compiler. Below is 10724an example of this type of ASL code: 10725 10726 Name(DEB,0x00) 10727 Scope(DEB) 10728 { 10729 10730Fixed some reported problems with 64-bit integer support in the 10731local implementation of C library functions (clib.c) 10732 10733 107342) Linux 10735 10736Use ACPI fix map region instead of IOAPIC region, since it is 10737undefined in non-SMP. 10738 10739Ensure that the SCI has the proper polarity and trigger, even on 10740systems that do not have an interrupt override entry in the MADT. 10741 107422.5 big driver reorganization (Pat Mochel) 10743 10744Use early table mapping code from acpitable.c (Andi Kleen) 10745 10746New blacklist entries (Andi Kleen) 10747 10748Blacklist improvements. Split blacklist code out into a separate 10749file. Move checking the blacklist to very early. Previously, we 10750would use ACPI tables, and then halfway through init, check the 10751blacklist -- too late. Now, it's early enough to completely fall- 10752back to non-ACPI. 10753 10754 107553) iASL Compiler/Disassembler version 20020918: 10756 10757Fixed a problem where the typechecking code didn't know that an 10758alias could point to a method. In other words, aliases were not 10759being dereferenced during typechecking. 10760 10761 10762---------------------------------------- 1076329 August 2002. Summary of changes for this release. 10764 107651) ACPI CA Core Subsystem Version 20020829: 10766 10767If the target of a Scope() operator already exists, it must be an 10768object type that actually opens a scope -- such as a Device, 10769Method, Scope, etc. This is a fatal runtime error. Similar error 10770check has been added to the iASL compiler also. 10771 10772Tightened up the namespace load to disallow multiple names in the 10773same scope. This previously was allowed if both objects were of 10774the same type. (i.e., a lookup was the same as entering a new 10775name). 10776 10777 107782) Linux 10779 10780Ensure that the ACPI interrupt has the proper trigger and 10781polarity. 10782 10783local_irq_disable is extraneous. (Matthew Wilcox) 10784 10785Make "acpi=off" actually do what it says, and not use the ACPI 10786interpreter *or* the tables. 10787 10788Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 10789Takayoshi) 10790 10791 107923) iASL Compiler/Disassembler Version 20020829: 10793 10794Implemented namepath optimization for name declarations. For 10795example, a declaration like "Method (\_SB_.ABCD)" would get 10796optimized to "Method (ABCD)" if the declaration is within the 10797\_SB_ scope. This optimization is in addition to the named 10798reference path optimization first released in the previous 10799version. This would seem to complete all possible optimizations 10800for namepaths within the ASL/AML. 10801 10802If the target of a Scope() operator already exists, it must be an 10803object type that actually opens a scope -- such as a Device, 10804Method, Scope, etc. 10805 10806Implemented a check and warning for unreachable code in the same 10807block below a Return() statement. 10808 10809Fixed a problem where the listing file was not generated if the 10810compiler aborted if the maximum error count was exceeded (200). 10811 10812Fixed a problem where the typechecking of method return values was 10813broken. This includes the check for a return value when the 10814method is invoked as a TermArg (a return value is expected.) 10815 10816Fixed a reported problem where EOF conditions during a quoted 10817string or comment caused a fault. 10818 10819 10820---------------------------------------- 1082115 August 2002. Summary of changes for this release. 10822 108231) ACPI CA Core Subsystem Version 20020815: 10824 10825Fixed a reported problem where a Store to a method argument that 10826contains a reference did not perform the indirect store correctly. 10827This problem was created during the conversion to the new 10828reference object model - the indirect store to a method argument 10829code was not updated to reflect the new model. 10830 10831Reworked the ACPI mode change code to better conform to ACPI 2.0, 10832handle corner cases, and improve code legibility (Kochi Takayoshi) 10833 10834Fixed a problem with the pathname parsing for the carat (^) 10835prefix. The heavy use of the carat operator by the new namepath 10836optimization in the iASL compiler uncovered a problem with the AML 10837interpreter handling of this prefix. In the case where one or 10838more carats precede a single nameseg, the nameseg was treated as 10839standalone and the search rule (to root) was inadvertently 10840applied. This could cause both the iASL compiler and the 10841interpreter to find the wrong object or to miss the error that 10842should occur if the object does not exist at that exact pathname. 10843 10844Found and fixed the problem where the HP Pavilion DSDT would not 10845load. This was a relatively minor tweak to the table loading code 10846(a problem caused by the unexpected encounter with a method 10847invocation not within a control method), but it does not solve the 10848overall issue of the execution of AML code at the table level. 10849This investigation is still ongoing. 10850 10851Code and Data Size: Current core subsystem library sizes are shown 10852below. These are the code and data sizes for the acpica.lib 10853produced by the Microsoft Visual C++ 6.0 compiler, and these 10854values do not include any ACPI driver or OSPM code. The debug 10855version of the code includes the debug output trace mechanism and 10856has a larger code and data size. Note that these values will vary 10857depending on the efficiency of the compiler and the compiler 10858options used during generation. 10859 10860 Previous Release 10861 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 10862 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 10863 Current Release: 10864 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 10865 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 10866 10867 108682) Linux 10869 10870Remove redundant slab.h include (Brad Hards) 10871 10872Fix several bugs in thermal.c (Herbert Nachtnebel) 10873 10874Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 10875 10876Change acpi_system_suspend to use updated irq functions (Pavel 10877Machek) 10878 10879Export acpi_get_firmware_table (Matthew Wilcox) 10880 10881Use proper root proc entry for ACPI (Kochi Takayoshi) 10882 10883Fix early-boot table parsing (Bjorn Helgaas) 10884 10885 108863) iASL Compiler/Disassembler 10887 10888Reworked the compiler options to make them more consistent and to 10889use two-letter options where appropriate. We were running out of 10890sensible letters. This may break some makefiles, so check the 10891current options list by invoking the compiler with no parameters. 10892 10893Completed the design and implementation of the ASL namepath 10894optimization option for the compiler. This option optimizes all 10895references to named objects to the shortest possible path. The 10896first attempt tries to utilize a single nameseg (4 characters) and 10897the "search-to-root" algorithm used by the interpreter. If that 10898cannot be used (because either the name is not in the search path 10899or there is a conflict with another object with the same name), 10900the pathname is optimized using the carat prefix (usually a 10901shorter string than specifying the entire path from the root.) 10902 10903Implemented support to obtain the DSDT from the Windows registry 10904(when the disassembly option is specified with no input file). 10905Added this code as the implementation for AcpiOsTableOverride in 10906the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 10907utility) to scan memory for the DSDT to the AcpiOsTableOverride 10908function in the DOS OSL to make the disassembler truly OS 10909independent. 10910 10911Implemented a new option to disassemble and compile in one step. 10912When used without an input filename, this option will grab the 10913DSDT from the local machine, disassemble it, and compile it in one 10914step. 10915 10916Added a warning message for invalid escapes (a backslash followed 10917by any character other than the allowable escapes). This catches 10918the quoted string error "\_SB_" (which should be "\\_SB_" ). 10919 10920Also, there are numerous instances in the ACPI specification where 10921this error occurs. 10922 10923Added a compiler option to disable all optimizations. This is 10924basically the "compatibility mode" because by using this option, 10925the AML code will come out exactly the same as other ASL 10926compilers. 10927 10928Added error messages for incorrectly ordered dependent resource 10929functions. This includes: missing EndDependentFn macro at end of 10930dependent resource list, nested dependent function macros (both 10931start and end), and missing StartDependentFn macro. These are 10932common errors that should be caught at compile time. 10933 10934Implemented _OSI support for the disassembler and compiler. _OSI 10935must be included in the namespace for proper disassembly (because 10936the disassembler must know the number of arguments.) 10937 10938Added an "optimization" message type that is optional (off by 10939default). This message is used for all optimizations - including 10940constant folding, integer optimization, and namepath optimization. 10941 10942---------------------------------------- 1094325 July 2002. Summary of changes for this release. 10944 10945 109461) ACPI CA Core Subsystem Version 20020725: 10947 10948The AML Disassembler has been enhanced to produce compilable ASL 10949code and has been integrated into the iASL compiler (see below) as 10950well as the single-step disassembly for the AML debugger and the 10951disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 10952resource templates and macros are fully supported. The 10953disassembler has been tested on over 30 different AML files, 10954producing identical AML when the resulting disassembled ASL file 10955is recompiled with the same ASL compiler. 10956 10957Modified the Resource Manager to allow zero interrupts and zero 10958dma channels during the GetCurrentResources call. This was 10959causing problems on some platforms. 10960 10961Added the AcpiOsRedirectOutput interface to the OSL to simplify 10962output redirection for the AcpiOsPrintf and AcpiOsVprintf 10963interfaces. 10964 10965Code and Data Size: Current core subsystem library sizes are shown 10966below. These are the code and data sizes for the acpica.lib 10967produced by the Microsoft Visual C++ 6.0 compiler, and these 10968values do not include any ACPI driver or OSPM code. The debug 10969version of the code includes the debug output trace mechanism and 10970has a larger code and data size. Note that these values will vary 10971depending on the efficiency of the compiler and the compiler 10972options used during generation. 10973 10974 Previous Release 10975 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 10976 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 10977 Current Release: 10978 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 10979 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 10980 10981 109822) Linux 10983 10984Fixed a panic in the EC driver (Dominik Brodowski) 10985 10986Implemented checksum of the R/XSDT itself during Linux table scan 10987(Richard Schaal) 10988 10989 109903) iASL compiler 10991 10992The AML disassembler is integrated into the compiler. The "-d" 10993option invokes the disassembler to completely disassemble an 10994input AML file, producing as output a text ASL file with the 10995extension ".dsl" (to avoid name collisions with existing .asl 10996source files.) A future enhancement will allow the disassembler 10997to obtain the BIOS DSDT from the registry under Windows. 10998 10999Fixed a problem with the VendorShort and VendorLong resource 11000descriptors where an invalid AML sequence was created. 11001 11002Implemented a fix for BufferData term in the ASL parser. It was 11003inadvertently defined twice, allowing invalid syntax to pass and 11004causing reduction conflicts. 11005 11006Fixed a problem where the Ones opcode could get converted to a 11007value of zero if "Ones" was used where a byte, word or dword value 11008was expected. The 64-bit value is now truncated to the correct 11009size with the correct value. 11010 11011 11012 11013---------------------------------------- 1101402 July 2002. Summary of changes for this release. 11015 11016 110171) ACPI CA Core Subsystem Version 20020702: 11018 11019The Table Manager code has been restructured to add several new 11020features. Tables that are not required by the core subsystem 11021(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 11022validated in any way and are returned from AcpiGetFirmwareTable if 11023requested. The AcpiOsTableOverride interface is now called for 11024each table that is loaded by the subsystem in order to allow the 11025host to override any table it chooses. Previously, only the DSDT 11026could be overridden. Added one new files, tbrsdt.c and 11027tbgetall.c. 11028 11029Fixed a problem with the conversion of internal package objects to 11030external objects (when a package is returned from a control 11031method.) The return buffer length was set to zero instead of the 11032proper length of the package object. 11033 11034Fixed a reported problem with the use of the RefOf and DeRefOf 11035operators when passing reference arguments to control methods. A 11036new type of Reference object is used internally for references 11037produced by the RefOf operator. 11038 11039Added additional error messages in the Resource Manager to explain 11040AE_BAD_DATA errors when they occur during resource parsing. 11041 11042Split the AcpiEnableSubsystem into two primitives to enable a 11043finer granularity initialization sequence. These two calls should 11044be called in this order: AcpiEnableSubsystem (flags), 11045AcpiInitializeObjects (flags). The flags parameter remains the 11046same. 11047 11048 110492) Linux 11050 11051Updated the ACPI utilities module to understand the new style of 11052fully resolved package objects that are now returned from the core 11053subsystem. This eliminates errors of the form: 11054 11055 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 11056 acpi_utils-0430 [145] acpi_evaluate_reference: 11057 Invalid element in package (not a device reference) 11058 11059The method evaluation utility uses the new buffer allocation 11060scheme instead of calling AcpiEvaluate Object twice. 11061 11062Added support for ECDT. This allows the use of the Embedded 11063 11064Controller before the namespace has been fully initialized, which 11065is necessary for ACPI 2.0 support, and for some laptops to 11066initialize properly. (Laptops using ECDT are still rare, so only 11067limited testing was performed of the added functionality.) 11068 11069Fixed memory leaks in the EC driver. 11070 11071Eliminated a brittle code structure in acpi_bus_init(). 11072 11073Eliminated the acpi_evaluate() helper function in utils.c. It is 11074no longer needed since acpi_evaluate_object can optionally 11075allocate memory for the return object. 11076 11077Implemented fix for keyboard hang when getting battery readings on 11078some systems (Stephen White) 11079 11080PCI IRQ routing update (Dominik Brodowski) 11081 11082Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 11083support 11084 11085---------------------------------------- 1108611 June 2002. Summary of changes for this release. 11087 11088 110891) ACPI CA Core Subsystem Version 20020611: 11090 11091Fixed a reported problem where constants such as Zero and One 11092appearing within _PRT packages were not handled correctly within 11093the resource manager code. Originally reported against the ASL 11094compiler because the code generator now optimizes integers to 11095their minimal AML representation (i.e. AML constants if possible.) 11096The _PRT code now handles all AML constant opcodes correctly 11097(Zero, One, Ones, Revision). 11098 11099Fixed a problem with the Concatenate operator in the AML 11100interpreter where a buffer result object was incorrectly marked as 11101not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 11102 11103All package sub-objects are now fully resolved before they are 11104returned from the external ACPI interfaces. This means that name 11105strings are resolved to object handles, and constant operators 11106(Zero, One, Ones, Revision) are resolved to Integers. 11107 11108Implemented immediate resolution of the AML Constant opcodes 11109(Zero, One, Ones, Revision) to Integer objects upon detection 11110within the AML stream. This has simplified and reduced the 11111generated code size of the subsystem by eliminating about 10 11112switch statements for these constants (which previously were 11113contained in Reference objects.) The complicating issues are that 11114the Zero opcode is used as a "placeholder" for unspecified 11115optional target operands and stores to constants are defined to be 11116no-ops. 11117 11118Code and Data Size: Current core subsystem library sizes are shown 11119below. These are the code and data sizes for the acpica.lib 11120produced by the Microsoft Visual C++ 6.0 compiler, and these 11121values do not include any ACPI driver or OSPM code. The debug 11122version of the code includes the debug output trace mechanism and 11123has a larger code and data size. Note that these values will vary 11124depending on the efficiency of the compiler and the compiler 11125options used during generation. 11126 11127 Previous Release 11128 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 11129 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 11130 Current Release: 11131 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 11132 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 11133 11134 111352) Linux 11136 11137 11138Added preliminary support for obtaining _TRA data for PCI root 11139bridges (Bjorn Helgaas). 11140 11141 111423) iASL Compiler Version X2046: 11143 11144Fixed a problem where the "_DDN" reserved name was defined to be a 11145control method with one argument. There are no arguments, and 11146_DDN does not have to be a control method. 11147 11148Fixed a problem with the Linux version of the compiler where the 11149source lines printed with error messages were the wrong lines. 11150This turned out to be the "LF versus CR/LF" difference between 11151Windows and Unix. This appears to be the longstanding issue 11152concerning listing output and error messages. 11153 11154Fixed a problem with the Linux version of compiler where opcode 11155names within error messages were wrong. This was caused by a 11156slight difference in the output of the Flex tool on Linux versus 11157Windows. 11158 11159Fixed a problem with the Linux compiler where the hex output files 11160contained some garbage data caused by an internal buffer overrun. 11161 11162 11163---------------------------------------- 1116417 May 2002. Summary of changes for this release. 11165 11166 111671) ACPI CA Core Subsystem Version 20020517: 11168 11169Implemented a workaround to an BIOS bug discovered on the HP 11170OmniBook where the FADT revision number and the table size are 11171inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 11172behavior is to fallback to using only the ACPI 1.0 fields of the 11173FADT if the table is too small to be a ACPI 2.0 table as claimed 11174by the revision number. Although this is a BIOS bug, this is a 11175case where the workaround is simple enough and with no side 11176effects, so it seemed prudent to add it. A warning message is 11177issued, however. 11178 11179Implemented minimum size checks for the fixed-length ACPI tables - 11180- the FADT and FACS, as well as consistency checks between the 11181revision number and the table size. 11182 11183Fixed a reported problem in the table override support where the 11184new table pointer was incorrectly treated as a physical address 11185instead of a logical address. 11186 11187Eliminated the use of the AE_AML_ERROR exception and replaced it 11188with more descriptive codes. 11189 11190Fixed a problem where an exception would occur if an ASL Field was 11191defined with no named Field Units underneath it (used by some 11192index fields). 11193 11194Code and Data Size: Current core subsystem library sizes are shown 11195below. These are the code and data sizes for the acpica.lib 11196produced by the Microsoft Visual C++ 6.0 compiler, and these 11197values do not include any ACPI driver or OSPM code. The debug 11198version of the code includes the debug output trace mechanism and 11199has a larger code and data size. Note that these values will vary 11200depending on the efficiency of the compiler and the compiler 11201options used during generation. 11202 11203 Previous Release 11204 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 11205 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 11206 Current Release: 11207 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 11208 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 11209 11210 11211 112122) Linux 11213 11214Much work done on ACPI init (MADT and PCI IRQ routing support). 11215(Paul D. and Dominik Brodowski) 11216 11217Fix PCI IRQ-related panic on boot (Sam Revitch) 11218 11219Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 11220 11221Fix "MHz" typo (Dominik Brodowski) 11222 11223Fix RTC year 2000 issue (Dominik Brodowski) 11224 11225Preclude multiple button proc entries (Eric Brunet) 11226 11227Moved arch-specific code out of include/platform/aclinux.h 11228 112293) iASL Compiler Version X2044: 11230 11231Implemented error checking for the string used in the EISAID macro 11232(Usually used in the definition of the _HID object.) The code now 11233strictly enforces the PnP format - exactly 7 characters, 3 11234uppercase letters and 4 hex digits. 11235 11236If a raw string is used in the definition of the _HID object 11237(instead of the EISAID macro), the string must contain all 11238alphanumeric characters (e.g., "*PNP0011" is not allowed because 11239of the asterisk.) 11240 11241Implemented checking for invalid use of ACPI reserved names for 11242most of the name creation operators (Name, Device, Event, Mutex, 11243OperationRegion, PowerResource, Processor, and ThermalZone.) 11244Previously, this check was only performed for control methods. 11245 11246Implemented an additional check on the Name operator to emit an 11247error if a reserved name that must be implemented in ASL as a 11248control method is used. We know that a reserved name must be a 11249method if it is defined with input arguments. 11250 11251The warning emitted when a namespace object reference is not found 11252during the cross reference phase has been changed into an error. 11253The "External" directive should be used for names defined in other 11254modules. 11255 11256 112574) Tools and Utilities 11258 11259The 16-bit tools (adump16 and aexec16) have been regenerated and 11260tested. 11261 11262Fixed a problem with the output of both acpidump and adump16 where 11263the indentation of closing parentheses and brackets was not 11264 11265aligned properly with the parent block. 11266 11267 11268---------------------------------------- 1126903 May 2002. Summary of changes for this release. 11270 11271 112721) ACPI CA Core Subsystem Version 20020503: 11273 11274Added support a new OSL interface that allows the host operating 11275 11276system software to override the DSDT found in the firmware - 11277AcpiOsTableOverride. With this interface, the OSL can examine the 11278version of the firmware DSDT and replace it with a different one 11279if desired. 11280 11281Added new external interfaces for accessing ACPI registers from 11282device drivers and other system software - AcpiGetRegister and 11283AcpiSetRegister. This was simply an externalization of the 11284existing AcpiHwBitRegister interfaces. 11285 11286Fixed a regression introduced in the previous build where the 11287ASL/AML CreateField operator always returned an error, 11288"destination must be a NS Node". 11289 11290Extended the maximum time (before failure) to successfully enable 11291ACPI mode to 3 seconds. 11292 11293Code and Data Size: Current core subsystem library sizes are shown 11294below. These are the code and data sizes for the acpica.lib 11295produced by the Microsoft Visual C++ 6.0 compiler, and these 11296values do not include any ACPI driver or OSPM code. The debug 11297version of the code includes the debug output trace mechanism and 11298has a larger code and data size. Note that these values will vary 11299depending on the efficiency of the compiler and the compiler 11300options used during generation. 11301 11302 Previous Release 11303 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 11304 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 11305 Current Release: 11306 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 11307 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 11308 11309 113102) Linux 11311 11312Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 11313free. While 3 out of 4 of our in-house systems work fine, the last 11314one still hangs when testing the LAPIC timer. 11315 11316Renamed many files in 2.5 kernel release to omit "acpi_" from the 11317name. 11318 11319Added warning on boot for Presario 711FR. 11320 11321Sleep improvements (Pavel Machek) 11322 11323ACPI can now be built without CONFIG_PCI enabled. 11324 11325IA64: Fixed memory map functions (JI Lee) 11326 11327 113283) iASL Compiler Version X2043: 11329 11330Added support to allow the compiler to be integrated into the MS 11331VC++ development environment for one-button compilation of single 11332files or entire projects -- with error-to-source-line mapping. 11333 11334Implemented support for compile-time constant folding for the 11335Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 11336specification. This allows the ASL writer to use expressions 11337instead of Integer/Buffer/String constants in terms that must 11338evaluate to constants at compile time and will also simplify the 11339emitted AML in any such sub-expressions that can be folded 11340(evaluated at compile-time.) This increases the size of the 11341compiler significantly because a portion of the ACPI CA AML 11342interpreter is included within the compiler in order to pre- 11343evaluate constant expressions. 11344 11345 11346Fixed a problem with the "Unicode" ASL macro that caused the 11347compiler to fault. (This macro is used in conjunction with the 11348_STR reserved name.) 11349 11350Implemented an AML opcode optimization to use the Zero, One, and 11351Ones opcodes where possible to further reduce the size of integer 11352constants and thus reduce the overall size of the generated AML 11353code. 11354 11355Implemented error checking for new reserved terms for ACPI version 113562.0A. 11357 11358Implemented the -qr option to display the current list of ACPI 11359reserved names known to the compiler. 11360 11361Implemented the -qc option to display the current list of ASL 11362operators that are allowed within constant expressions and can 11363therefore be folded at compile time if the operands are constants. 11364 11365 113664) Documentation 11367 11368Updated the Programmer's Reference for new interfaces, data types, 11369and memory allocation model options. 11370 11371Updated the iASL Compiler User Reference to apply new format and 11372add information about new features and options. 11373 11374---------------------------------------- 1137519 April 2002. Summary of changes for this release. 11376 113771) ACPI CA Core Subsystem Version 20020419: 11378 11379The source code base for the Core Subsystem has been completely 11380cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 11381versions. The Lint option files used are included in the 11382/acpi/generate/lint directory. 11383 11384Implemented enhanced status/error checking across the entire 11385Hardware manager subsystem. Any hardware errors (reported from 11386the OSL) are now bubbled up and will abort a running control 11387method. 11388 11389 11390Fixed a problem where the per-ACPI-table integer width (32 or 64) 11391was stored only with control method nodes, causing a fault when 11392non-control method code was executed during table loading. The 11393solution implemented uses a global variable to indicate table 11394width across the entire ACPI subsystem. Therefore, ACPI CA does 11395not support mixed integer widths across different ACPI tables 11396(DSDT, SSDT). 11397 11398Fixed a problem where NULL extended fields (X fields) in an ACPI 113992.0 ACPI FADT caused the table load to fail. Although the 11400existing ACPI specification is a bit fuzzy on this topic, the new 11401behavior is to fall back on a ACPI 1.0 field if the corresponding 11402ACPI 2.0 X field is zero (even though the table revision indicates 11403a full ACPI 2.0 table.) The ACPI specification will be updated to 11404clarify this issue. 11405 11406Fixed a problem with the SystemMemory operation region handler 11407where memory was always accessed byte-wise even if the AML- 11408specified access width was larger than a byte. This caused 11409problems on systems with memory-mapped I/O. Memory is now 11410accessed with the width specified. On systems that do not support 11411non-aligned transfers, a check is made to guarantee proper address 11412alignment before proceeding in order to avoid an AML-caused 11413alignment fault within the kernel. 11414 11415 11416Fixed a problem with the ExtendedIrq resource where only one byte 11417of the 4-byte Irq field was extracted. 11418 11419Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 11420function was out of date and required a rewrite. 11421 11422Code and Data Size: Current core subsystem library sizes are shown 11423below. These are the code and data sizes for the acpica.lib 11424produced by the Microsoft Visual C++ 6.0 compiler, and these 11425values do not include any ACPI driver or OSPM code. The debug 11426version of the code includes the debug output trace mechanism and 11427has a larger code and data size. Note that these values will vary 11428depending on the efficiency of the compiler and the compiler 11429options used during generation. 11430 11431 Previous Release 11432 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 11433 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 11434 Current Release: 11435 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 11436 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 11437 11438 114392) Linux 11440 11441PCI IRQ routing fixes (Dominik Brodowski) 11442 11443 114443) iASL Compiler Version X2042: 11445 11446Implemented an additional compile-time error check for a field 11447unit whose size + minimum access width would cause a run-time 11448access beyond the end-of-region. Previously, only the field size 11449itself was checked. 11450 11451The Core subsystem and iASL compiler now share a common parse 11452object in preparation for compile-time evaluation of the type 114533/4/5 ASL operators. 11454 11455 11456---------------------------------------- 11457Summary of changes for this release: 03_29_02 11458 114591) ACPI CA Core Subsystem Version 20020329: 11460 11461Implemented support for late evaluation of TermArg operands to 11462Buffer and Package objects. This allows complex expressions to be 11463used in the declarations of these object types. 11464 11465Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 114661.0, if the field was larger than 32 bits, it was returned as a 11467buffer - otherwise it was returned as an integer. In ACPI 2.0, 11468the field is returned as a buffer only if the field is larger than 1146964 bits. The TableRevision is now considered when making this 11470conversion to avoid incompatibility with existing ASL code. 11471 11472Implemented logical addressing for AcpiOsGetRootPointer. This 11473allows an RSDP with either a logical or physical address. With 11474this support, the host OS can now override all ACPI tables with 11475one logical RSDP. Includes implementation of "typed" pointer 11476support to allow a common data type for both physical and logical 11477pointers internally. This required a change to the 11478AcpiOsGetRootPointer interface. 11479 11480Implemented the use of ACPI 2.0 Generic Address Structures for all 11481GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 11482mapped I/O for these ACPI features. 11483 11484Initialization now ignores not only non-required tables (All 11485tables other than the FADT, FACS, DSDT, and SSDTs), but also does 11486not validate the table headers of unrecognized tables. 11487 11488Fixed a problem where a notify handler could only be 11489installed/removed on an object of type Device. All "notify" 11490 11491objects are now supported -- Devices, Processor, Power, and 11492Thermal. 11493 11494Removed most verbosity from the ACPI_DB_INFO debug level. Only 11495critical information is returned when this debug level is enabled. 11496 11497Code and Data Size: Current core subsystem library sizes are shown 11498below. These are the code and data sizes for the acpica.lib 11499produced by the Microsoft Visual C++ 6.0 compiler, and these 11500values do not include any ACPI driver or OSPM code. The debug 11501version of the code includes the debug output trace mechanism and 11502has a larger code and data size. Note that these values will vary 11503depending on the efficiency of the compiler and the compiler 11504options used during generation. 11505 11506 Previous Release 11507 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 11508 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 11509 Current Release: 11510 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 11511 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 11512 11513 115142) Linux: 11515 11516The processor driver (acpi_processor.c) now fully supports ACPI 115172.0-based processor performance control (e.g. Intel(R) 11518SpeedStep(TM) technology) Note that older laptops that only have 11519the Intel "applet" interface are not supported through this. The 11520'limit' and 'performance' interface (/proc) are fully functional. 11521[Note that basic policy for controlling performance state 11522transitions will be included in the next version of ospmd.] The 11523idle handler was modified to more aggressively use C2, and PIIX4 11524errata handling underwent a complete overhaul (big thanks to 11525Dominik Brodowski). 11526 11527Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 11528based devices in the ACPI namespace are now dynamically bound 11529(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 11530This allows, among other things, ACPI to resolve bus numbers for 11531subordinate PCI bridges. 11532 11533Enhanced PCI IRQ routing to get the proper bus number for _PRT 11534entries defined underneath PCI bridges. 11535 11536Added IBM 600E to bad bios list due to invalid _ADR value for 11537PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 11538 11539In the process of adding full MADT support (e.g. IOAPIC) for IA32 11540(acpi.c, mpparse.c) -- stay tuned. 11541 11542Added back visual differentiation between fixed-feature and 11543control-method buttons in dmesg. Buttons are also subtyped (e.g. 11544button/power/PWRF) to simplify button identification. 11545 11546We no longer use -Wno-unused when compiling debug. Please ignore 11547any "_THIS_MODULE defined but not used" messages. 11548 11549Can now shut down the system using "magic sysrq" key. 11550 11551 115523) iASL Compiler version 2041: 11553 11554Fixed a problem where conversion errors for hex/octal/decimal 11555constants were not reported. 11556 11557Implemented a fix for the General Register template Address field. 11558This field was 8 bits when it should be 64. 11559 11560Fixed a problem where errors/warnings were no longer being emitted 11561within the listing output file. 11562 11563Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 11564exactly 4 characters, alphanumeric only. 11565 11566 11567 11568 11569---------------------------------------- 11570Summary of changes for this release: 03_08_02 11571 11572 115731) ACPI CA Core Subsystem Version 20020308: 11574 11575Fixed a problem with AML Fields where the use of the "AccessAny" 11576keyword could cause an interpreter error due to attempting to read 11577or write beyond the end of the parent Operation Region. 11578 11579Fixed a problem in the SystemMemory Operation Region handler where 11580an attempt was made to map memory beyond the end of the region. 11581This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 11582errors on some Linux systems. 11583 11584Fixed a problem where the interpreter/namespace "search to root" 11585algorithm was not functioning for some object types. Relaxed the 11586internal restriction on the search to allow upsearches for all 11587external object types as well as most internal types. 11588 11589 115902) Linux: 11591 11592We now use safe_halt() macro versus individual calls to sti | hlt. 11593 11594Writing to the processor limit interface should now work. "echo 1" 11595will increase the limit, 2 will decrease, and 0 will reset to the 11596 11597default. 11598 11599 116003) ASL compiler: 11601 11602Fixed segfault on Linux version. 11603 11604 11605---------------------------------------- 11606Summary of changes for this release: 02_25_02 11607 116081) ACPI CA Core Subsystem: 11609 11610 11611Fixed a problem where the GPE bit masks were not initialized 11612properly, causing erratic GPE behavior. 11613 11614Implemented limited support for multiple calling conventions. The 11615code can be generated with either the VPL (variable parameter 11616list, or "C") convention, or the FPL (fixed parameter list, or 11617"Pascal") convention. The core subsystem is about 3.4% smaller 11618when generated with FPL. 11619 11620 116212) Linux 11622 11623Re-add some /proc/acpi/event functionality that was lost during 11624the rewrite 11625 11626Resolved issue with /proc events for fixed-feature buttons showing 11627up as the system device. 11628 11629Fixed checks on C2/C3 latencies to be inclusive of maximum values. 11630 11631Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 11632 11633Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 11634 11635Fixed limit interface & usage to fix bugs with passive cooling 11636hysterisis. 11637 11638Restructured PRT support. 11639 11640 11641---------------------------------------- 11642Summary of changes for this label: 02_14_02 11643 11644 116451) ACPI CA Core Subsystem: 11646 11647Implemented support in AcpiLoadTable to allow loading of FACS and 11648FADT tables. 11649 11650Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 11651been removed. All 64-bit platforms should be migrated to the ACPI 116522.0 tables. The actbl71.h header has been removed from the source 11653tree. 11654 11655All C macros defined within the subsystem have been prefixed with 11656"ACPI_" to avoid collision with other system include files. 11657 11658Removed the return value for the two AcpiOsPrint interfaces, since 11659it is never used and causes lint warnings for ignoring the return 11660value. 11661 11662Added error checking to all internal mutex acquire and release 11663calls. Although a failure from one of these interfaces is 11664probably a fatal system error, these checks will cause the 11665immediate abort of the currently executing method or interface. 11666 11667Fixed a problem where the AcpiSetCurrentResources interface could 11668fault. This was a side effect of the deployment of the new memory 11669allocation model. 11670 11671Fixed a couple of problems with the Global Lock support introduced 11672in the last major build. The "common" (1.0/2.0) internal FACS was 11673being overwritten with the FACS signature and clobbering the 11674Global Lock pointer. Also, the actual firmware FACS was being 11675unmapped after construction of the "common" FACS, preventing 11676access to the actual Global Lock field within it. The "common" 11677internal FACS is no longer installed as an actual ACPI table; it 11678is used simply as a global. 11679 11680Code and Data Size: Current core subsystem library sizes are shown 11681below. These are the code and data sizes for the acpica.lib 11682produced by the Microsoft Visual C++ 6.0 compiler, and these 11683values do not include any ACPI driver or OSPM code. The debug 11684version of the code includes the debug output trace mechanism and 11685has a larger code and data size. Note that these values will vary 11686depending on the efficiency of the compiler and the compiler 11687options used during generation. 11688 11689 Previous Release (02_07_01) 11690 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 11691 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 11692 Current Release: 11693 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 11694 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 11695 11696 116972) Linux 11698 11699Updated Linux-specific code for core macro and OSL interface 11700changes described above. 11701 11702Improved /proc/acpi/event. It now can be opened only once and has 11703proper poll functionality. 11704 11705Fixed and restructured power management (acpi_bus). 11706 11707Only create /proc "view by type" when devices of that class exist. 11708 11709Fixed "charging/discharging" bug (and others) in acpi_battery. 11710 11711Improved thermal zone code. 11712 11713 117143) ASL Compiler, version X2039: 11715 11716 11717Implemented the new compiler restriction on ASL String hex/octal 11718escapes to non-null, ASCII values. An error results if an invalid 11719value is used. (This will require an ACPI 2.0 specification 11720change.) 11721 11722AML object labels that are output to the optional C and ASM source 11723are now prefixed with both the ACPI table signature and table ID 11724to help guarantee uniqueness within a large BIOS project. 11725 11726 11727---------------------------------------- 11728Summary of changes for this label: 02_01_02 11729 117301) ACPI CA Core Subsystem: 11731 11732ACPI 2.0 support is complete in the entire Core Subsystem and the 11733ASL compiler. All new ACPI 2.0 operators are implemented and all 11734other changes for ACPI 2.0 support are complete. With 11735simultaneous code and data optimizations throughout the subsystem, 11736ACPI 2.0 support has been implemented with almost no additional 11737cost in terms of code and data size. 11738 11739Implemented a new mechanism for allocation of return buffers. If 11740the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 11741be allocated on behalf of the caller. Consolidated all return 11742buffer validation and allocation to a common procedure. Return 11743buffers will be allocated via the primary OSL allocation interface 11744since it appears that a separate pool is not needed by most users. 11745If a separate pool is required for these buffers, the caller can 11746still use the original mechanism and pre-allocate the buffer(s). 11747 11748Implemented support for string operands within the DerefOf 11749operator. 11750 11751Restructured the Hardware and Event managers to be table driven, 11752simplifying the source code and reducing the amount of generated 11753code. 11754 11755Split the common read/write low-level ACPI register bitfield 11756procedure into a separate read and write, simplifying the code 11757considerably. 11758 11759Obsoleted the AcpiOsCallocate OSL interface. This interface was 11760used only a handful of times and didn't have enough critical mass 11761for a separate interface. Replaced with a common calloc procedure 11762in the core. 11763 11764Fixed a reported problem with the GPE number mapping mechanism 11765that allows GPE1 numbers to be non-contiguous with GPE0. 11766Reorganized the GPE information and shrunk a large array that was 11767originally large enough to hold info for all possible GPEs (256) 11768to simply large enough to hold all GPEs up to the largest GPE 11769number on the machine. 11770 11771Fixed a reported problem with resource structure alignment on 64- 11772bit platforms. 11773 11774Changed the AcpiEnableEvent and AcpiDisableEvent external 11775interfaces to not require any flags for the common case of 11776enabling/disabling a GPE. 11777 11778Implemented support to allow a "Notify" on a Processor object. 11779 11780Most TBDs in comments within the source code have been resolved 11781and eliminated. 11782 11783 11784Fixed a problem in the interpreter where a standalone parent 11785prefix (^) was not handled correctly in the interpreter and 11786debugger. 11787 11788Removed obsolete and unnecessary GPE save/restore code. 11789 11790Implemented Field support in the ASL Load operator. This allows a 11791table to be loaded from a named field, in addition to loading a 11792table directly from an Operation Region. 11793 11794Implemented timeout and handle support in the external Global Lock 11795interfaces. 11796 11797Fixed a problem in the AcpiDump utility where pathnames were no 11798longer being generated correctly during the dump of named objects. 11799 11800Modified the AML debugger to give a full display of if/while 11801predicates instead of just one AML opcode at a time. (The 11802predicate can have several nested ASL statements.) The old method 11803was confusing during single stepping. 11804 11805Code and Data Size: Current core subsystem library sizes are shown 11806below. These are the code and data sizes for the acpica.lib 11807produced by the Microsoft Visual C++ 6.0 compiler, and these 11808values do not include any ACPI driver or OSPM code. The debug 11809version of the code includes the debug output trace mechanism and 11810has a larger code and data size. Note that these values will vary 11811depending on the efficiency of the compiler and the compiler 11812options used during generation. 11813 11814 Previous Release (12_18_01) 11815 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 11816 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 11817 Current Release: 11818 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 11819 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 11820 118212) Linux 11822 11823 Implemented fix for PIIX reverse throttling errata (Processor 11824driver) 11825 11826Added new Limit interface (Processor and Thermal drivers) 11827 11828New thermal policy (Thermal driver) 11829 11830Many updates to /proc 11831 11832Battery "low" event support (Battery driver) 11833 11834Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 11835 11836IA32 - IA64 initialization unification, no longer experimental 11837 11838Menuconfig options redesigned 11839 118403) ASL Compiler, version X2037: 11841 11842Implemented several new output features to simplify integration of 11843AML code into firmware: 1) Output the AML in C source code with 11844labels for each named ASL object. The original ASL source code 11845is interleaved as C comments. 2) Output the AML in ASM source code 11846with labels and interleaved ASL source. 3) Output the AML in 11847raw hex table form, in either C or ASM. 11848 11849Implemented support for optional string parameters to the 11850LoadTable operator. 11851 11852Completed support for embedded escape sequences within string 11853literals. The compiler now supports all single character escapes 11854as well as the Octal and Hex escapes. Note: the insertion of a 11855null byte into a string literal (via the hex/octal escape) causes 11856the string to be immediately terminated. A warning is issued. 11857 11858Fixed a problem where incorrect AML was generated for the case 11859where an ASL namepath consists of a single parent prefix ( 11860 11861) with no trailing name segments. 11862 11863The compiler has been successfully generated with a 64-bit C 11864compiler. 11865 11866 11867 11868 11869---------------------------------------- 11870Summary of changes for this label: 12_18_01 11871 118721) Linux 11873 11874Enhanced blacklist with reason and severity fields. Any table's 11875signature may now be used to identify a blacklisted system. 11876 11877Call _PIC control method to inform the firmware which interrupt 11878model the OS is using. Turn on any disabled link devices. 11879 11880Cleaned up busmgr /proc error handling (Andreas Dilger) 11881 11882 2) ACPI CA Core Subsystem: 11883 11884Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 11885while loop) 11886 11887Completed implementation of the ACPI 2.0 "Continue", 11888"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 11889operators. All new ACPI 2.0 operators are now implemented in both 11890the ASL compiler and the AML interpreter. The only remaining ACPI 118912.0 task is support for the String data type in the DerefOf 11892operator. Fixed a problem with AcquireMutex where the status code 11893was lost if the caller had to actually wait for the mutex. 11894 11895Increased the maximum ASL Field size from 64K bits to 4G bits. 11896 11897Completed implementation of the external Global Lock interfaces -- 11898AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 11899Handler parameters were added. 11900 11901Completed another pass at removing warnings and issues when 11902compiling with 64-bit compilers. The code now compiles cleanly 11903with the Intel 64-bit C/C++ compiler. Most notably, the pointer 11904add and subtract (diff) macros have changed considerably. 11905 11906 11907Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1190864-bit platforms, 32-bits on all others. This type is used 11909wherever memory allocation and/or the C sizeof() operator is used, 11910and affects the OSL memory allocation interfaces AcpiOsAllocate 11911and AcpiOsCallocate. 11912 11913Implemented sticky user breakpoints in the AML debugger. 11914 11915Code and Data Size: Current core subsystem library sizes are shown 11916below. These are the code and data sizes for the acpica.lib 11917produced by the Microsoft Visual C++ 6.0 compiler, and these 11918values do not include any ACPI driver or OSPM code. The debug 11919version of the code includes the debug output trace mechanism and 11920has a larger code and data size. Note that these values will vary 11921depending on the efficiency of the compiler and the compiler 11922options used during generation. 11923 11924 Previous Release (12_05_01) 11925 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 11926 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 11927 Current Release: 11928 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 11929 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 11930 11931 3) ASL Compiler, version X2034: 11932 11933Now checks for (and generates an error if detected) the use of a 11934Break or Continue statement without an enclosing While statement. 11935 11936 11937Successfully generated the compiler with the Intel 64-bit C 11938compiler. 11939 11940 ---------------------------------------- 11941Summary of changes for this label: 12_05_01 11942 11943 1) ACPI CA Core Subsystem: 11944 11945The ACPI 2.0 CopyObject operator is fully implemented. This 11946operator creates a new copy of an object (and is also used to 11947bypass the "implicit conversion" mechanism of the Store operator.) 11948 11949The ACPI 2.0 semantics for the SizeOf operator are fully 11950implemented. The change is that performing a SizeOf on a 11951reference object causes an automatic dereference of the object to 11952tha actual value before the size is evaluated. This behavior was 11953undefined in ACPI 1.0. 11954 11955The ACPI 2.0 semantics for the Extended IRQ resource descriptor 11956have been implemented. The interrupt polarity and mode are now 11957independently set. 11958 11959Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 11960appearing in Package objects were not properly converted to 11961integers when the internal Package was converted to an external 11962object (via the AcpiEvaluateObject interface.) 11963 11964Fixed a problem with the namespace object deletion mechanism for 11965objects created by control methods. There were two parts to this 11966problem: 1) Objects created during the initialization phase method 11967parse were not being deleted, and 2) The object owner ID mechanism 11968to track objects was broken. 11969 11970Fixed a problem where the use of the ASL Scope operator within a 11971control method would result in an invalid opcode exception. 11972 11973Fixed a problem introduced in the previous label where the buffer 11974length required for the _PRT structure was not being returned 11975correctly. 11976 11977Code and Data Size: Current core subsystem library sizes are shown 11978below. These are the code and data sizes for the acpica.lib 11979produced by the Microsoft Visual C++ 6.0 compiler, and these 11980values do not include any ACPI driver or OSPM code. The debug 11981version of the code includes the debug output trace mechanism and 11982has a larger code and data size. Note that these values will vary 11983depending on the efficiency of the compiler and the compiler 11984options used during generation. 11985 11986 Previous Release (11_20_01) 11987 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 11988 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 11989 11990 Current Release: 11991 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 11992 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 11993 11994 2) Linux: 11995 11996Updated all files to apply cleanly against 2.4.16. 11997 11998Added basic PCI Interrupt Routing Table (PRT) support for IA32 11999(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 12000version supports both static and dyanmic PRT entries, but dynamic 12001entries are treated as if they were static (not yet 12002reconfigurable). Architecture- specific code to use this data is 12003absent on IA32 but should be available shortly. 12004 12005Changed the initialization sequence to start the ACPI interpreter 12006(acpi_init) prior to initialization of the PCI driver (pci_init) 12007in init/main.c. This ordering is required to support PRT and 12008facilitate other (future) enhancement. A side effect is that the 12009ACPI bus driver and certain device drivers can no longer be loaded 12010as modules. 12011 12012Modified the 'make menuconfig' options to allow PCI Interrupt 12013Routing support to be included without the ACPI Bus and other 12014device drivers. 12015 12016 3) ASL Compiler, version X2033: 12017 12018Fixed some issues with the use of the new CopyObject and 12019DataTableRegion operators. Both are fully functional. 12020 12021 ---------------------------------------- 12022Summary of changes for this label: 11_20_01 12023 12024 20 November 2001. Summary of changes for this release. 12025 12026 1) ACPI CA Core Subsystem: 12027 12028Updated Index support to match ACPI 2.0 semantics. Storing a 12029Integer, String, or Buffer to an Index of a Buffer will store only 12030the least-significant byte of the source to the Indexed buffer 12031byte. Multiple writes are not performed. 12032 12033Fixed a problem where the access type used in an AccessAs ASL 12034operator was not recorded correctly into the field object. 12035 12036Fixed a problem where ASL Event objects were created in a 12037signalled state. Events are now created in an unsignalled state. 12038 12039The internal object cache is now purged after table loading and 12040initialization to reduce the use of dynamic kernel memory -- on 12041the assumption that object use is greatest during the parse phase 12042of the entire table (versus the run-time use of individual control 12043methods.) 12044 12045ACPI 2.0 variable-length packages are now fully operational. 12046 12047Code and Data Size: Code and Data optimizations have permitted new 12048feature development with an actual reduction in the library size. 12049Current core subsystem library sizes are shown below. These are 12050the code and data sizes for the acpica.lib produced by the 12051Microsoft Visual C++ 6.0 compiler, and these values do not include 12052any ACPI driver or OSPM code. The debug version of the code 12053includes the debug output trace mechanism and has a larger code 12054and data size. Note that these values will vary depending on the 12055efficiency of the compiler and the compiler options used during 12056generation. 12057 12058 Previous Release (11_09_01): 12059 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 12060 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 12061 12062 Current Release: 12063 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 12064 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 12065 12066 2) Linux: 12067 12068Enhanced the ACPI boot-time initialization code to allow the use 12069of Local APIC tables for processor enumeration on IA-32, and to 12070pave the way for a fully MPS-free boot (on SMP systems) in the 12071near future. This functionality replaces 12072arch/i386/kernel/acpitables.c, which was introduced in an earlier 120732.4.15-preX release. To enable this feature you must add 12074"acpi_boot=on" to the kernel command line -- see the help entry 12075for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 12076the works... 12077 12078Restructured the configuration options to allow boot-time table 12079parsing support without inclusion of the ACPI Interpreter (and 12080other) code. 12081 12082NOTE: This release does not include fixes for the reported events, 12083power-down, and thermal passive cooling issues (coming soon). 12084 12085 3) ASL Compiler: 12086 12087Added additional typechecking for Fields within restricted access 12088Operation Regions. All fields within EC and CMOS regions must be 12089declared with ByteAcc. All fields withing SMBus regions must be 12090declared with the BufferAcc access type. 12091 12092Fixed a problem where the listing file output of control methods 12093no longer interleaved the actual AML code with the ASL source 12094code. 12095 12096 12097 12098 12099---------------------------------------- 12100Summary of changes for this label: 11_09_01 12101 121021) ACPI CA Core Subsystem: 12103 12104Implemented ACPI 2.0-defined support for writes to fields with a 12105Buffer, String, or Integer source operand that is smaller than the 12106target field. In these cases, the source operand is zero-extended 12107to fill the target field. 12108 12109Fixed a problem where a Field starting bit offset (within the 12110parent operation region) was calculated incorrectly if the 12111 12112alignment of the field differed from the access width. This 12113affected CreateWordField, CreateDwordField, CreateQwordField, and 12114possibly other fields that use the "AccessAny" keyword. 12115 12116Fixed a problem introduced in the 11_02_01 release where indirect 12117stores through method arguments did not operate correctly. 12118 121192) Linux: 12120 12121Implemented boot-time ACPI table parsing support 12122(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 12123facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 12124legacy BIOS interfaces (e.g. MPS) for the configuration of system 12125processors, memory, and interrupts during setup_arch(). Note that 12126this patch does not include the required architecture-specific 12127changes required to apply this information -- subsequent patches 12128will be posted for both IA32 and IA64 to achieve this. 12129 12130Added low-level sleep support for IA32 platforms, courtesy of Pat 12131Mochel. This allows IA32 systems to transition to/from various 12132sleeping states (e.g. S1, S3), although the lack of a centralized 12133driver model and power-manageable drivers will prevent its 12134(successful) use on most systems. 12135 12136Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 12137submenu, unified IA32 and IA64 options, added new "Boot using ACPI 12138tables" option, etc. 12139 12140Increased the default timeout for the EC driver from 1ms to 10ms 12141(1000 cycles of 10us) to try to address AE_TIME errors during EC 12142transactions. 12143 12144 ---------------------------------------- 12145Summary of changes for this label: 11_02_01 12146 121471) ACPI CA Core Subsystem: 12148 12149ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 12150(QWordAcc keyword). All ACPI 2.0 64-bit support is now 12151implemented. 12152 12153OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 12154changes to support ACPI 2.0 Qword field access. Read/Write 12155PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 12156accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 12157the value parameter for the address space handler interface is now 12158an ACPI_INTEGER. OSL implementations of these interfaces must now 12159handle the case where the Width parameter is 64. 12160 12161Index Fields: Fixed a problem where unaligned bit assembly and 12162disassembly for IndexFields was not supported correctly. 12163 12164Index and Bank Fields: Nested Index and Bank Fields are now 12165supported. During field access, a check is performed to ensure 12166that the value written to an Index or Bank register is not out of 12167the range of the register. The Index (or Bank) register is 12168written before each access to the field data. Future support will 12169include allowing individual IndexFields to be wider than the 12170DataRegister width. 12171 12172Fields: Fixed a problem where the AML interpreter was incorrectly 12173attempting to write beyond the end of a Field/OpRegion. This was 12174a boundary case that occurred when a DWORD field was written to a 12175BYTE access OpRegion, forcing multiple writes and causing the 12176interpreter to write one datum too many. 12177 12178Fields: Fixed a problem with Field/OpRegion access where the 12179starting bit address of a field was incorrectly calculated if the 12180current access type was wider than a byte (WordAcc, DwordAcc, or 12181QwordAcc). 12182 12183Fields: Fixed a problem where forward references to individual 12184FieldUnits (individual Field names within a Field definition) were 12185not resolved during the AML table load. 12186 12187Fields: Fixed a problem where forward references from a Field 12188definition to the parent Operation Region definition were not 12189resolved during the AML table load. 12190 12191Fields: Duplicate FieldUnit names within a scope are now detected 12192during AML table load. 12193 12194Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 12195returned an incorrect name for the root node. 12196 12197Code and Data Size: Code and Data optimizations have permitted new 12198feature development with an actual reduction in the library size. 12199Current core subsystem library sizes are shown below. These are 12200the code and data sizes for the acpica.lib produced by the 12201Microsoft Visual C++ 6.0 compiler, and these values do not include 12202any ACPI driver or OSPM code. The debug version of the code 12203includes the debug output trace mechanism and has a larger code 12204and data size. Note that these values will vary depending on the 12205efficiency of the compiler and the compiler options used during 12206generation. 12207 12208 Previous Release (10_18_01): 12209 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 12210 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 12211 12212 Current Release: 12213 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 12214 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 12215 12216 2) Linux: 12217 12218Improved /proc processor output (Pavel Machek) Re-added 12219MODULE_LICENSE("GPL") to all modules. 12220 12221 3) ASL Compiler version X2030: 12222 12223Duplicate FieldUnit names within a scope are now detected and 12224flagged as errors. 12225 12226 4) Documentation: 12227 12228Programmer Reference updated to reflect OSL and address space 12229handler interface changes described above. 12230 12231---------------------------------------- 12232Summary of changes for this label: 10_18_01 12233 12234ACPI CA Core Subsystem: 12235 12236Fixed a problem with the internal object reference count mechanism 12237that occasionally caused premature object deletion. This resolves 12238all of the outstanding problem reports where an object is deleted 12239in the middle of an interpreter evaluation. Although this problem 12240only showed up in rather obscure cases, the solution to the 12241problem involved an adjustment of all reference counts involving 12242objects attached to namespace nodes. 12243 12244Fixed a problem with Field support in the interpreter where 12245writing to an aligned field whose length is an exact multiple (2 12246or greater) of the field access granularity would cause an attempt 12247to write beyond the end of the field. 12248 12249The top level AML opcode execution functions within the 12250interpreter have been renamed with a more meaningful and 12251consistent naming convention. The modules exmonad.c and 12252exdyadic.c were eliminated. New modules are exoparg1.c, 12253exoparg2.c, exoparg3.c, and exoparg6.c. 12254 12255Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 12256 12257Fixed a problem where the AML debugger was causing some internal 12258objects to not be deleted during subsystem termination. 12259 12260Fixed a problem with the external AcpiEvaluateObject interface 12261where the subsystem would fault if the named object to be 12262evaluated refered to a constant such as Zero, Ones, etc. 12263 12264Fixed a problem with IndexFields and BankFields where the 12265subsystem would fault if the index, data, or bank registers were 12266not defined in the same scope as the field itself. 12267 12268Added printf format string checking for compilers that support 12269this feature. Corrected more than 50 instances of issues with 12270format specifiers within invocations of ACPI_DEBUG_PRINT 12271throughout the core subsystem code. 12272 12273The ASL "Revision" operator now returns the ACPI support level 12274implemented in the core - the value "2" since the ACPI 2.0 support 12275is more than 50% implemented. 12276 12277Enhanced the output of the AML debugger "dump namespace" command 12278to output in a more human-readable form. 12279 12280Current core subsystem library code sizes are shown below. These 12281 12282are the code and data sizes for the acpica.lib produced by the 12283Microsoft Visual C++ 6.0 compiler, and these values do not include 12284any ACPI driver or OSPM code. The debug version of the code 12285includes the full debug trace mechanism -- leading to a much 12286 12287larger code and data size. Note that these values will vary 12288depending on the efficiency of the compiler and the compiler 12289options used during generation. 12290 12291 Previous Label (09_20_01): 12292 Non-Debug Version: 65K Code, 5K Data, 70K Total 12293 Debug Version: 138K Code, 58K Data, 196K Total 12294 12295 This Label: 12296 12297 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 12298 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 12299 12300Linux: 12301 12302Implemented a "Bad BIOS Blacklist" to track machines that have 12303known ASL/AML problems. 12304 12305Enhanced the /proc interface for the thermal zone driver and added 12306support for _HOT (the critical suspend trip point). The 'info' 12307file now includes threshold/policy information, and allows setting 12308of _SCP (cooling preference) and _TZP (polling frequency) values 12309to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 12310frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 12311preference to the passive/quiet mode (if supported by the ASL). 12312 12313Implemented a workaround for a gcc bug that resuted in an OOPs 12314when loading the control method battery driver. 12315 12316 ---------------------------------------- 12317Summary of changes for this label: 09_20_01 12318 12319 ACPI CA Core Subsystem: 12320 12321The AcpiEnableEvent and AcpiDisableEvent interfaces have been 12322modified to allow individual GPE levels to be flagged as wake- 12323enabled (i.e., these GPEs are to remain enabled when the platform 12324sleeps.) 12325 12326The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 12327support wake-enabled GPEs. This means that upon entering the 12328sleep state, all GPEs that are not wake-enabled are disabled. 12329When leaving the sleep state, these GPEs are reenabled. 12330 12331A local double-precision divide/modulo module has been added to 12332enhance portability to OS kernels where a 64-bit math library is 12333not available. The new module is "utmath.c". 12334 12335Several optimizations have been made to reduce the use of CPU 12336stack. Originally over 2K, the maximum stack usage is now below 123372K at 1860 bytes (1.82k) 12338 12339Fixed a problem with the AcpiGetFirmwareTable interface where the 12340root table pointer was not mapped into a logical address properly. 12341 12342Fixed a problem where a NULL pointer was being dereferenced in the 12343interpreter code for the ASL Notify operator. 12344 12345Fixed a problem where the use of the ASL Revision operator 12346returned an error. This operator now returns the current version 12347of the ACPI CA core subsystem. 12348 12349Fixed a problem where objects passed as control method parameters 12350to AcpiEvaluateObject were always deleted at method termination. 12351However, these objects may end up being stored into the namespace 12352by the called method. The object reference count mechanism was 12353applied to these objects instead of a force delete. 12354 12355Fixed a problem where static strings or buffers (contained in the 12356AML code) that are declared as package elements within the ASL 12357code could cause a fault because the interpreter would attempt to 12358delete them. These objects are now marked with the "static 12359object" flag to prevent any attempt to delete them. 12360 12361Implemented an interpreter optimization to use operands directly 12362from the state object instead of extracting the operands to local 12363variables. This reduces stack use and code size, and improves 12364performance. 12365 12366The module exxface.c was eliminated as it was an unnecessary extra 12367layer of code. 12368 12369Current core subsystem library code sizes are shown below. These 12370are the code and data sizes for the acpica.lib produced by the 12371Microsoft Visual C++ 6.0 compiler, and these values do not include 12372any ACPI driver or OSPM code. The debug version of the code 12373includes the full debug trace mechanism -- leading to a much 12374larger code and data size. Note that these values will vary 12375depending on the efficiency of the compiler and the compiler 12376options used during generation. 12377 12378 Non-Debug Version: 65K Code, 5K Data, 70K Total 12379(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 12380Total (Previously 195K) 12381 12382Linux: 12383 12384Support for ACPI 2.0 64-bit integers has been added. All ACPI 12385Integer objects are now 64 bits wide 12386 12387All Acpi data types and structures are now in lower case. Only 12388Acpi macros are upper case for differentiation. 12389 12390 Documentation: 12391 12392Changes to the external interfaces as described above. 12393 12394 ---------------------------------------- 12395Summary of changes for this label: 08_31_01 12396 12397 ACPI CA Core Subsystem: 12398 12399A bug with interpreter implementation of the ASL Divide operator 12400was found and fixed. The implicit function return value (not the 12401explicit store operands) was returning the remainder instead of 12402the quotient. This was a longstanding bug and it fixes several 12403known outstanding issues on various platforms. 12404 12405The ACPI_DEBUG_PRINT and function trace entry/exit macros have 12406been further optimized for size. There are 700 invocations of the 12407DEBUG_PRINT macro alone, so each optimization reduces the size of 12408the debug version of the subsystem significantly. 12409 12410A stack trace mechanism has been implemented. The maximum stack 12411usage is about 2K on 32-bit platforms. The debugger command "stat 12412stack" will display the current maximum stack usage. 12413 12414All public symbols and global variables within the subsystem are 12415now prefixed with the string "Acpi". This keeps all of the 12416symbols grouped together in a kernel map, and avoids conflicts 12417with other kernel subsystems. 12418 12419Most of the internal fixed lookup tables have been moved into the 12420code segment via the const operator. 12421 12422Several enhancements have been made to the interpreter to both 12423reduce the code size and improve performance. 12424 12425Current core subsystem library code sizes are shown below. These 12426are the code and data sizes for the acpica.lib produced by the 12427Microsoft Visual C++ 6.0 compiler, and these values do not include 12428any ACPI driver or OSPM code. The debug version of the code 12429includes the full debug trace mechanism which contains over 700 12430invocations of the DEBUG_PRINT macro, 500 function entry macro 12431invocations, and over 900 function exit macro invocations -- 12432leading to a much larger code and data size. Note that these 12433values will vary depending on the efficiency of the compiler and 12434the compiler options used during generation. 12435 12436 Non-Debug Version: 64K Code, 5K Data, 69K Total 12437Debug Version: 137K Code, 58K Data, 195K Total 12438 12439 Linux: 12440 12441Implemented wbinvd() macro, pending a kernel-wide definition. 12442 12443Fixed /proc/acpi/event to handle poll() and short reads. 12444 12445 ASL Compiler, version X2026: 12446 12447Fixed a problem introduced in the previous label where the AML 12448 12449code emitted for package objects produced packages with zero 12450length. 12451 12452 ---------------------------------------- 12453Summary of changes for this label: 08_16_01 12454 12455ACPI CA Core Subsystem: 12456 12457The following ACPI 2.0 ASL operators have been implemented in the 12458AML interpreter (These are already supported by the Intel ASL 12459compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 12460ToBuffer. Support for 64-bit AML constants is implemented in the 12461AML parser, debugger, and disassembler. 12462 12463The internal memory tracking mechanism (leak detection code) has 12464been upgraded to reduce the memory overhead (a separate tracking 12465block is no longer allocated for each memory allocation), and now 12466supports all of the internal object caches. 12467 12468The data structures and code for the internal object caches have 12469been coelesced and optimized so that there is a single cache and 12470memory list data structure and a single group of functions that 12471implement generic cache management. This has reduced the code 12472size in both the debug and release versions of the subsystem. 12473 12474The DEBUG_PRINT macro(s) have been optimized for size and replaced 12475by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 12476different, because it generates a single call to an internal 12477function. This results in a savings of about 90 bytes per 12478invocation, resulting in an overall code and data savings of about 1247916% in the debug version of the subsystem. 12480 12481 Linux: 12482 12483Fixed C3 disk corruption problems and re-enabled C3 on supporting 12484machines. 12485 12486Integrated low-level sleep code by Patrick Mochel. 12487 12488Further tweaked source code Linuxization. 12489 12490Other minor fixes. 12491 12492 ASL Compiler: 12493 12494Support for ACPI 2.0 variable length packages is fixed/completed. 12495 12496Fixed a problem where the optional length parameter for the ACPI 124972.0 ToString operator. 12498 12499Fixed multiple extraneous error messages when a syntax error is 12500detected within the declaration line of a control method. 12501 12502 ---------------------------------------- 12503Summary of changes for this label: 07_17_01 12504 12505ACPI CA Core Subsystem: 12506 12507Added a new interface named AcpiGetFirmwareTable to obtain any 12508ACPI table via the ACPI signature. The interface can be called at 12509any time during kernel initialization, even before the kernel 12510virtual memory manager is initialized and paging is enabled. This 12511allows kernel subsystems to obtain ACPI tables very early, even 12512before the ACPI CA subsystem is initialized. 12513 12514Fixed a problem where Fields defined with the AnyAcc attribute 12515could be resolved to the incorrect address under the following 12516conditions: 1) the field width is larger than 8 bits and 2) the 12517parent operation region is not defined on a DWORD boundary. 12518 12519Fixed a problem where the interpreter is not being locked during 12520namespace initialization (during execution of the _INI control 12521methods), causing an error when an attempt is made to release it 12522later. 12523 12524ACPI 2.0 support in the AML Interpreter has begun and will be 12525ongoing throughout the rest of this year. In this label, The Mod 12526operator is implemented. 12527 12528Added a new data type to contain full PCI addresses named 12529ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 12530and Function values. 12531 12532 Linux: 12533 12534Enhanced the Linux version of the source code to change most 12535capitalized ACPI type names to lowercase. For example, all 12536instances of ACPI_STATUS are changed to acpi_status. This will 12537result in a large diff, but the change is strictly cosmetic and 12538aligns the CA code closer to the Linux coding standard. 12539 12540OSL Interfaces: 12541 12542The interfaces to the PCI configuration space have been changed to 12543add the PCI Segment number and to split the single 32-bit combined 12544DeviceFunction field into two 16-bit fields. This was 12545accomplished by moving the four values that define an address in 12546PCI configuration space (segment, bus, device, and function) to 12547the new ACPI_PCI_ID structure. 12548 12549The changes to the PCI configuration space interfaces led to a 12550reexamination of the complete set of address space access 12551interfaces for PCI, I/O, and Memory. The previously existing 18 12552interfaces have proven difficult to maintain (any small change 12553must be propagated across at least 6 interfaces) and do not easily 12554allow for future expansion to 64 bits if necessary. Also, on some 12555systems, it would not be appropriate to demultiplex the access 12556width (8, 16, 32,or 64) before calling the OSL if the 12557corresponding native OS interfaces contain a similar access width 12558parameter. For these reasons, the 18 address space interfaces 12559have been replaced by these 6 new ones: 12560 12561AcpiOsReadPciConfiguration 12562AcpiOsWritePciConfiguration 12563AcpiOsReadMemory 12564AcpiOsWriteMemory 12565AcpiOsReadPort 12566AcpiOsWritePort 12567 12568Added a new interface named AcpiOsGetRootPointer to allow the OSL 12569to perform the platform and/or OS-specific actions necessary to 12570obtain the ACPI RSDP table pointer. On IA-32 platforms, this 12571interface will simply call down to the CA core to perform the low- 12572memory search for the table. On IA-64, the RSDP is obtained from 12573EFI. Migrating this interface to the OSL allows the CA core to 12574 12575remain OS and platform independent. 12576 12577Added a new interface named AcpiOsSignal to provide a generic 12578"function code and pointer" interface for various miscellaneous 12579signals and notifications that must be made to the host OS. The 12580first such signals are intended to support the ASL Fatal and 12581Breakpoint operators. In the latter case, the AcpiOsBreakpoint 12582interface has been obsoleted. 12583 12584The definition of the AcpiFormatException interface has been 12585changed to simplify its use. The caller no longer must supply a 12586buffer to the call; A pointer to a const string is now returned 12587directly. This allows the call to be easily used in printf 12588statements, etc. since the caller does not have to manage a local 12589buffer. 12590 12591 12592 ASL Compiler, Version X2025: 12593 12594The ACPI 2.0 Switch/Case/Default operators have been implemented 12595and are fully functional. They will work with all ACPI 1.0 12596interpreters, since the operators are simply translated to If/Else 12597pairs. 12598 12599The ACPI 2.0 ElseIf operator is implemented and will also work 12600with 1.0 interpreters, for the same reason. 12601 12602Implemented support for ACPI 2.0 variable-length packages. These 12603packages have a separate opcode, and their size is determined by 12604the interpreter at run-time. 12605 12606Documentation The ACPI CA Programmer Reference has been updated to 12607reflect the new interfaces and changes to existing interfaces. 12608 12609 ------------------------------------------ 12610Summary of changes for this label: 06_15_01 12611 12612 ACPI CA Core Subsystem: 12613 12614Fixed a problem where a DWORD-accessed field within a Buffer 12615object would get its byte address inadvertently rounded down to 12616the nearest DWORD. Buffers are always Byte-accessible. 12617 12618 ASL Compiler, version X2024: 12619 12620Fixed a problem where the Switch() operator would either fault or 12621hang the compiler. Note however, that the AML code for this ACPI 126222.0 operator is not yet implemented. 12623 12624Compiler uses the new AcpiOsGetTimer interface to obtain compile 12625timings. 12626 12627Implementation of the CreateField operator automatically converts 12628a reference to a named field within a resource descriptor from a 12629byte offset to a bit offset if required. 12630 12631Added some missing named fields from the resource descriptor 12632support. These are the names that are automatically created by the 12633compiler to reference fields within a descriptor. They are only 12634valid at compile time and are not passed through to the AML 12635interpreter. 12636 12637Resource descriptor named fields are now typed as Integers and 12638subject to compile-time typechecking when used in expressions. 12639 12640 ------------------------------------------ 12641Summary of changes for this label: 05_18_01 12642 12643 ACPI CA Core Subsystem: 12644 12645Fixed a couple of problems in the Field support code where bits 12646from adjacent fields could be returned along with the proper field 12647bits. Restructured the field support code to improve performance, 12648readability and maintainability. 12649 12650New DEBUG_PRINTP macro automatically inserts the procedure name 12651into the output, saving hundreds of copies of procedure name 12652strings within the source, shrinking the memory footprint of the 12653debug version of the core subsystem. 12654 12655 Source Code Structure: 12656 12657The source code directory tree was restructured to reflect the 12658current organization of the component architecture. Some files 12659and directories have been moved and/or renamed. 12660 12661 Linux: 12662 12663Fixed leaking kacpidpc processes. 12664 12665Fixed queueing event data even when /proc/acpi/event is not 12666opened. 12667 12668 ASL Compiler, version X2020: 12669 12670Memory allocation performance enhancement - over 24X compile time 12671improvement on large ASL files. Parse nodes and namestring 12672buffers are now allocated from a large internal compiler buffer. 12673 12674The temporary .SRC file is deleted unless the "-s" option is 12675specified 12676 12677The "-d" debug output option now sends all output to the .DBG file 12678instead of the console. 12679 12680"External" second parameter is now optional 12681 12682"ElseIf" syntax now properly allows the predicate 12683 12684Last operand to "Load" now recognized as a Target operand 12685 12686Debug object can now be used anywhere as a normal object. 12687 12688ResourceTemplate now returns an object of type BUFFER 12689 12690EISAID now returns an object of type INTEGER 12691 12692"Index" now works with a STRING operand 12693 12694"LoadTable" now accepts optional parameters 12695 12696"ToString" length parameter is now optional 12697 12698"Interrupt (ResourceType," parse error fixed. 12699 12700"Register" with a user-defined region space parse error fixed 12701 12702Escaped backslash at the end of a string ("\\") scan/parse error 12703fixed 12704 12705"Revision" is now an object of type INTEGER. 12706 12707 12708 12709------------------------------------------ 12710Summary of changes for this label: 05_02_01 12711 12712Linux: 12713 12714/proc/acpi/event now blocks properly. 12715 12716Removed /proc/sys/acpi. You can still dump your DSDT from 12717/proc/acpi/dsdt. 12718 12719 ACPI CA Core Subsystem: 12720 12721Fixed a problem introduced in the previous label where some of the 12722"small" resource descriptor types were not recognized. 12723 12724Improved error messages for the case where an ASL Field is outside 12725the range of the parent operation region. 12726 12727 ASL Compiler, version X2018: 12728 12729 12730Added error detection for ASL Fields that extend beyond the length 12731of the parent operation region (only if the length of the region 12732is known at compile time.) This includes fields that have a 12733minimum access width that is smaller than the parent region, and 12734individual field units that are partially or entirely beyond the 12735extent of the parent. 12736 12737 12738 12739------------------------------------------ 12740Summary of changes for this label: 04_27_01 12741 12742 ACPI CA Core Subsystem: 12743 12744Fixed a problem where the namespace mutex could be released at the 12745wrong time during execution of AcpiRemoveAddressSpaceHandler. 12746 12747Added optional thread ID output for debug traces, to simplify 12748debugging of multiple threads. Added context switch notification 12749when the debug code realizes that a different thread is now 12750executing ACPI code. 12751 12752Some additional external data types have been prefixed with the 12753string "ACPI_" for consistency. This may effect existing code. 12754The data types affected are the external callback typedefs - e.g., 12755 12756WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 12757 12758 Linux: 12759 12760Fixed an issue with the OSL semaphore implementation where a 12761thread was waking up with an error from receiving a SIGCHLD 12762signal. 12763 12764Linux version of ACPI CA now uses the system C library for string 12765manipulation routines instead of a local implementation. 12766 12767Cleaned up comments and removed TBDs. 12768 12769 ASL Compiler, version X2017: 12770 12771Enhanced error detection and reporting for all file I/O 12772operations. 12773 12774 Documentation: 12775 12776Programmer Reference updated to version 1.06. 12777 12778 12779 12780------------------------------------------ 12781Summary of changes for this label: 04_13_01 12782 12783 ACPI CA Core Subsystem: 12784 12785Restructured support for BufferFields and RegionFields. 12786BankFields support is now fully operational. All known 32-bit 12787limitations on field sizes have been removed. Both BufferFields 12788and (Operation) RegionFields are now supported by the same field 12789management code. 12790 12791Resource support now supports QWORD address and IO resources. The 1279216/32/64 bit address structures and the Extended IRQ structure 12793have been changed to properly handle Source Resource strings. 12794 12795A ThreadId of -1 is now used to indicate a "mutex not acquired" 12796condition internally and must never be returned by AcpiOsThreadId. 12797This reserved value was changed from 0 since Unix systems allow a 12798thread ID of 0. 12799 12800Linux: 12801 12802Driver code reorganized to enhance portability 12803 12804Added a kernel configuration option to control ACPI_DEBUG 12805 12806Fixed the EC driver to honor _GLK. 12807 12808ASL Compiler, version X2016: 12809 12810Fixed support for the "FixedHw" keyword. Previously, the FixedHw 12811address space was set to 0, not 0x7f as it should be. 12812 12813 ------------------------------------------ 12814Summary of changes for this label: 03_13_01 12815 12816 ACPI CA Core Subsystem: 12817 12818During ACPI initialization, the _SB_._INI method is now run if 12819present. 12820 12821Notify handler fix - notifies are deferred until the parent method 12822completes execution. This fixes the "mutex already acquired" 12823issue seen occasionally. 12824 12825Part of the "implicit conversion" rules in ACPI 2.0 have been 12826found to cause compatibility problems with existing ASL/AML. The 12827convert "result-to-target-type" implementation has been removed 12828for stores to method Args and Locals. Source operand conversion 12829is still fully implemented. Possible changes to ACPI 2.0 12830specification pending. 12831 12832Fix to AcpiRsCalculatePciRoutingTableLength to return correct 12833length. 12834 12835Fix for compiler warnings for 64-bit compiles. 12836 12837 Linux: 12838 12839/proc output aligned for easier parsing. 12840 12841Release-version compile problem fixed. 12842 12843New kernel configuration options documented in Configure.help. 12844 12845IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 12846context" message. 12847 12848 OSPM: 12849 12850Power resource driver integrated with bus manager. 12851 12852Fixed kernel fault during active cooling for thermal zones. 12853 12854Source Code: 12855 12856The source code tree has been restructured. 12857 12858 12859 12860------------------------------------------ 12861Summary of changes for this label: 03_02_01 12862 12863 Linux OS Services Layer (OSL): 12864 12865Major revision of all Linux-specific code. 12866 12867Modularized all ACPI-specific drivers. 12868 12869Added new thermal zone and power resource drivers. 12870 12871Revamped /proc interface (new functionality is under /proc/acpi). 12872 12873New kernel configuration options. 12874 12875 Linux known issues: 12876 12877New kernel configuration options not documented in Configure.help 12878yet. 12879 12880 12881Module dependencies not currently implemented. If used, they 12882should be loaded in this order: busmgr, power, ec, system, 12883processor, battery, ac_adapter, button, thermal. 12884 12885Modules will not load if CONFIG_MODVERSION is set. 12886 12887IBM 600E - entering S5 may reboot instead of shutting down. 12888 12889IBM 600E - Sleep button may generate "Invalid <NULL> context" 12890message. 12891 12892Some systems may fail with "execution mutex already acquired" 12893message. 12894 12895 ACPI CA Core Subsystem: 12896 12897Added a new OSL Interface, AcpiOsGetThreadId. This was required 12898for the deadlock detection code. Defined to return a non-zero, 32- 12899bit thread ID for the currently executing thread. May be a non- 12900zero constant integer on single-thread systems. 12901 12902Implemented deadlock detection for internal subsystem mutexes. We 12903may add conditional compilation for this code (debug only) later. 12904 12905ASL/AML Mutex object semantics are now fully supported. This 12906includes multiple acquires/releases by owner and support for the 12907 12908Mutex SyncLevel parameter. 12909 12910A new "Force Release" mechanism automatically frees all ASL 12911Mutexes that have been acquired but not released when a thread 12912exits the interpreter. This forces conformance to the ACPI spec 12913("All mutexes must be released when an invocation exits") and 12914prevents deadlocked ASL threads. This mechanism can be expanded 12915(later) to monitor other resource acquisitions if OEM ASL code 12916continues to misbehave (which it will). 12917 12918Several new ACPI exception codes have been added for the Mutex 12919support. 12920 12921Recursive method calls are now allowed and supported (the ACPI 12922spec does in fact allow recursive method calls.) The number of 12923recursive calls is subject to the restrictions imposed by the 12924SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 12925parameter. 12926 12927Implemented support for the SyncLevel parameter for control 12928methods (ACPI 2.0 feature) 12929 12930Fixed a deadlock problem when multiple threads attempted to use 12931the interpreter. 12932 12933Fixed a problem where the string length of a String package 12934element was not always set in a package returned from 12935AcpiEvaluateObject. 12936 12937Fixed a problem where the length of a String package element was 12938not always included in the length of the overall package returned 12939from AcpiEvaluateObject. 12940 12941Added external interfaces (Acpi*) to the ACPI debug memory 12942manager. This manager keeps a list of all outstanding 12943allocations, and can therefore detect memory leaks and attempts to 12944free memory blocks more than once. Useful for code such as the 12945power manager, etc. May not be appropriate for device drivers. 12946Performance with the debug code enabled is slow. 12947 12948The ACPI Global Lock is now an optional hardware element. 12949 12950 ASL Compiler Version X2015: 12951 12952Integrated changes to allow the compiler to be generated on 12953multiple platforms. 12954 12955Linux makefile added to generate the compiler on Linux 12956 12957 Source Code: 12958 12959All platform-specific headers have been moved to their own 12960subdirectory, Include/Platform. 12961 12962New source file added, Interpreter/ammutex.c 12963 12964New header file, Include/acstruct.h 12965 12966 Documentation: 12967 12968The programmer reference has been updated for the following new 12969interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 12970 12971 ------------------------------------------ 12972Summary of changes for this label: 02_08_01 12973 12974Core ACPI CA Subsystem: Fixed a problem where an error was 12975incorrectly returned if the return resource buffer was larger than 12976the actual data (in the resource interfaces). 12977 12978References to named objects within packages are resolved to the 12979 12980full pathname string before packages are returned directly (via 12981the AcpiEvaluateObject interface) or indirectly via the resource 12982interfaces. 12983 12984Linux OS Services Layer (OSL): 12985 12986Improved /proc battery interface. 12987 12988 12989Added C-state debugging output and other miscellaneous fixes. 12990 12991ASL Compiler Version X2014: 12992 12993All defined method arguments can now be used as local variables, 12994including the ones that are not actually passed in as parameters. 12995The compiler tracks initialization of the arguments and issues an 12996exception if they are used without prior assignment (just like 12997locals). 12998 12999The -o option now specifies a filename prefix that is used for all 13000output files, including the AML output file. Otherwise, the 13001default behavior is as follows: 1) the AML goes to the file 13002specified in the DSDT. 2) all other output files use the input 13003source filename as the base. 13004 13005 ------------------------------------------ 13006Summary of changes for this label: 01_25_01 13007 13008Core ACPI CA Subsystem: Restructured the implementation of object 13009store support within the interpreter. This includes support for 13010the Store operator as well as any ASL operators that include a 13011target operand. 13012 13013Partially implemented support for Implicit Result-to-Target 13014conversion. This is when a result object is converted on the fly 13015to the type of an existing target object. Completion of this 13016support is pending further analysis of the ACPI specification 13017concerning this matter. 13018 13019CPU-specific code has been removed from the subsystem (hardware 13020directory). 13021 13022New Power Management Timer functions added 13023 13024Linux OS Services Layer (OSL): Moved system state transition code 13025to the core, fixed it, and modified Linux OSL accordingly. 13026 13027Fixed C2 and C3 latency calculations. 13028 13029 13030We no longer use the compilation date for the version message on 13031initialization, but retrieve the version from AcpiGetSystemInfo(). 13032 13033Incorporated for fix Sony VAIO machines. 13034 13035Documentation: The Programmer Reference has been updated and 13036reformatted. 13037 13038 13039ASL Compiler: Version X2013: Fixed a problem where the line 13040numbering and error reporting could get out of sync in the 13041presence of multiple include files. 13042 13043 ------------------------------------------ 13044Summary of changes for this label: 01_15_01 13045 13046Core ACPI CA Subsystem: 13047 13048Implemented support for type conversions in the execution of the 13049ASL Concatenate operator (The second operand is converted to 13050match the type of the first operand before concatenation.) 13051 13052Support for implicit source operand conversion is partially 13053implemented. The ASL source operand types Integer, Buffer, and 13054String are freely interchangeable for most ASL operators and are 13055converted by the interpreter on the fly as required. Implicit 13056Target operand conversion (where the result is converted to the 13057target type before storing) is not yet implemented. 13058 13059Support for 32-bit and 64-bit BCD integers is implemented. 13060 13061Problem fixed where a field read on an aligned field could cause a 13062read past the end of the field. 13063 13064New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 13065does not return a value, but the caller expects one. (The ASL 13066compiler flags this as a warning.) 13067 13068ASL Compiler: 13069 13070Version X2011: 130711. Static typechecking of all operands is implemented. This 13072prevents the use of invalid objects (such as using a Package where 13073an Integer is required) at compile time instead of at interpreter 13074run-time. 130752. The ASL source line is printed with ALL errors and warnings. 130763. Bug fix for source EOF without final linefeed. 130774. Debug option is split into a parse trace and a namespace trace. 130785. Namespace output option (-n) includes initial values for 13079integers and strings. 130806. Parse-only option added for quick syntax checking. 130817. Compiler checks for duplicate ACPI name declarations 13082 13083Version X2012: 130841. Relaxed typechecking to allow interchangeability between 13085strings, integers, and buffers. These types are now converted by 13086the interpreter at runtime. 130872. Compiler reports time taken by each internal subsystem in the 13088debug output file. 13089 13090 13091 ------------------------------------------ 13092Summary of changes for this label: 12_14_00 13093 13094ASL Compiler: 13095 13096This is the first official release of the compiler. Since the 13097compiler requires elements of the Core Subsystem, this label 13098synchronizes everything. 13099 13100------------------------------------------ 13101Summary of changes for this label: 12_08_00 13102 13103 13104Fixed a problem where named references within the ASL definition 13105of both OperationRegions and CreateXXXFields did not work 13106properly. The symptom was an AE_AML_OPERAND_TYPE during 13107initialization of the region/field. This is similar (but not 13108related internally) to the problem that was fixed in the last 13109label. 13110 13111Implemented both 32-bit and 64-bit support for the BCD ASL 13112functions ToBCD and FromBCD. 13113 13114Updated all legal headers to include "2000" in the copyright 13115years. 13116 13117 ------------------------------------------ 13118Summary of changes for this label: 12_01_00 13119 13120Fixed a problem where method invocations within the ASL definition 13121of both OperationRegions and CreateXXXFields did not work 13122properly. The symptom was an AE_AML_OPERAND_TYPE during 13123initialization of the region/field: 13124 13125 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 13126[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 13127(0x3005) 13128 13129Fixed a problem where operators with more than one nested 13130subexpression would fail. The symptoms were varied, by mostly 13131AE_AML_OPERAND_TYPE errors. This was actually a rather serious 13132problem that has gone unnoticed until now. 13133 13134 Subtract (Add (1,2), Multiply (3,4)) 13135 13136Fixed a problem where AcpiGetHandle didn't quite get fixed in the 13137previous build (The prefix part of a relative path was handled 13138incorrectly). 13139 13140Fixed a problem where Operation Region initialization failed if 13141the operation region name was a "namepath" instead of a simple 13142"nameseg". Symptom was an AE_NO_OPERAND error. 13143 13144Fixed a problem where an assignment to a local variable via the 13145indirect RefOf mechanism only worked for the first such 13146assignment. Subsequent assignments were ignored. 13147 13148 ------------------------------------------ 13149Summary of changes for this label: 11_15_00 13150 13151ACPI 2.0 table support with backwards support for ACPI 1.0 and the 131520.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 13153the AML interpreter does NOT have support for the new 2.0 ASL 13154grammar terms at this time. 13155 13156All ACPI hardware access is via the GAS structures in the ACPI 2.0 13157FADT. 13158 13159All physical memory addresses across all platforms are now 64 bits 13160wide. Logical address width remains dependent on the platform 13161(i.e., "void *"). 13162 13163AcpiOsMapMemory interface changed to a 64-bit physical address. 13164 13165The AML interpreter integer size is now 64 bits, as per the ACPI 131662.0 specification. 13167 13168For backwards compatibility with ACPI 1.0, ACPI tables with a 13169revision number less than 2 use 32-bit integers only. 13170 13171Fixed a problem where the evaluation of OpRegion operands did not 13172always resolve them to numbers properly. 13173 13174------------------------------------------ 13175Summary of changes for this label: 10_20_00 13176 13177Fix for CBN_._STA issue. This fix will allow correct access to 13178CBN_ OpRegions when the _STA returns 0x8. 13179 13180Support to convert ACPI constants (Ones, Zeros, One) to actual 13181values before a package object is returned 13182 13183Fix for method call as predicate to if/while construct causing 13184incorrect if/while behavior 13185 13186Fix for Else block package lengths sometimes calculated wrong (if 13187block > 63 bytes) 13188 13189Fix for Processor object length field, was always zero 13190 13191Table load abort if FACP sanity check fails 13192 13193Fix for problem with Scope(name) if name already exists 13194 13195Warning emitted if a named object referenced cannot be found 13196(resolved) during method execution. 13197 13198 13199 13200 13201 13202------------------------------------------ 13203Summary of changes for this label: 9_29_00 13204 13205New table initialization interfaces: AcpiInitializeSubsystem no 13206longer has any parameters AcpiFindRootPointer - Find the RSDP (if 13207necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 13208>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 13209AcpiLoadTables 13210 13211Note: These interface changes require changes to all existing OSDs 13212 13213The PCI_Config default address space handler is always installed 13214at the root namespace object. 13215 13216------------------------------------------- 13217Summary of changes for this label: 09_15_00 13218 13219The new initialization architecture is implemented. New 13220interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 13221AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 13222 13223(Namespace is automatically loaded when a table is loaded) 13224 13225The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1322652 bytes to 32 bytes. There is usually one of these for every 13227namespace object, so the memory savings is significant. 13228 13229Implemented just-in-time evaluation of the CreateField operators. 13230 13231Bug fixes for IA-64 support have been integrated. 13232 13233Additional code review comments have been implemented 13234 13235The so-called "third pass parse" has been replaced by a final walk 13236through the namespace to initialize all operation regions (address 13237spaces) and fields that have not yet been initialized during the 13238execution of the various _INI and REG methods. 13239 13240New file - namespace/nsinit.c 13241 13242------------------------------------------- 13243Summary of changes for this label: 09_01_00 13244 13245Namespace manager data structures have been reworked to change the 13246primary object from a table to a single object. This has 13247resulted in dynamic memory savings of 3X within the namespace and 132482X overall in the ACPI CA subsystem. 13249 13250Fixed problem where the call to AcpiEvFindPciRootBuses was 13251inadvertently left commented out. 13252 13253Reduced the warning count when generating the source with the GCC 13254compiler. 13255 13256Revision numbers added to each module header showing the 13257SourceSafe version of the file. Please refer to this version 13258number when giving us feedback or comments on individual modules. 13259 13260The main object types within the subsystem have been renamed to 13261clarify their purpose: 13262 13263ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 13264ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 13265ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 13266 13267NOTE: no changes to the initialization sequence are included in 13268this label. 13269 13270------------------------------------------- 13271Summary of changes for this label: 08_23_00 13272 13273Fixed problem where TerminateControlMethod was being called 13274multiple times per method 13275 13276Fixed debugger problem where single stepping caused a semaphore to 13277be oversignalled 13278 13279Improved performance through additional parse object caching - 13280added ACPI_EXTENDED_OP type 13281 13282------------------------------------------- 13283Summary of changes for this label: 08_10_00 13284 13285Parser/Interpreter integration: Eliminated the creation of 13286complete parse trees for ACPI tables and control methods. 13287Instead, parse subtrees are created and then deleted as soon as 13288they are processed (Either entered into the namespace or executed 13289by the interpreter). This reduces the use of dynamic kernel 13290memory significantly. (about 10X) 13291 13292Exception codes broken into classes and renumbered. Be sure to 13293recompile all code that includes acexcep.h. Hopefully we won't 13294have to renumber the codes again now that they are split into 13295classes (environment, programmer, AML code, ACPI table, and 13296internal). 13297 13298Fixed some additional alignment issues in the Resource Manager 13299subcomponent 13300 13301Implemented semaphore tracking in the AcpiExec utility, and fixed 13302several places where mutexes/semaphores were being unlocked 13303without a corresponding lock operation. There are no known 13304semaphore or mutex "leaks" at this time. 13305 13306Fixed the case where an ASL Return operator is used to return an 13307unnamed package. 13308 13309------------------------------------------- 13310Summary of changes for this label: 07_28_00 13311 13312Fixed a problem with the way addresses were calculated in 13313AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 13314manifested itself when a Field was created with WordAccess or 13315DwordAccess, but the field unit defined within the Field was less 13316 13317than a Word or Dword. 13318 13319Fixed a problem in AmlDumpOperands() module's loop to pull 13320operands off of the operand stack to display information. The 13321problem manifested itself as a TLB error on 64-bit systems when 13322accessing an operand stack with two or more operands. 13323 13324Fixed a problem with the PCI configuration space handlers where 13325context was getting confused between accesses. This required a 13326change to the generic address space handler and address space 13327setup definitions. Handlers now get both a global handler context 13328(this is the one passed in by the user when executing 13329AcpiInstallAddressSpaceHandler() and a specific region context 13330that is unique to each region (For example, the _ADR, _SEG and 13331_BBN values associated with a specific region). The generic 13332function definitions have changed to the following: 13333 13334typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 13335UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 13336*HandlerContext, // This used to be void *Context void 13337*RegionContext); // This is an additional parameter 13338 13339typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 13340RegionHandle, UINT32 Function, void *HandlerContext, void 13341**RegionContext); // This used to be **ReturnContext 13342 13343------------------------------------------- 13344Summary of changes for this label: 07_21_00 13345 13346Major file consolidation and rename. All files within the 13347interpreter have been renamed as well as most header files. This 13348was done to prevent collisions with existing files in the host 13349OSs -- filenames such as "config.h" and "global.h" seem to be 13350quite common. The VC project files have been updated. All 13351makefiles will require modification. 13352 13353The parser/interpreter integration continues in Phase 5 with the 13354implementation of a complete 2-pass parse (the AML is parsed 13355twice) for each table; This avoids the construction of a huge 13356parse tree and therefore reduces the amount of dynamic memory 13357required by the subsystem. Greater use of the parse object cache 13358means that performance is unaffected. 13359 13360Many comments from the two code reviews have been rolled in. 13361 13362The 64-bit alignment support is complete. 13363 13364------------------------------------------- 13365Summary of changes for this label: 06_30_00 13366 13367With a nod and a tip of the hat to the technology of yesteryear, 13368we've added support in the source code for 80 column output 13369devices. The code is now mostly constrained to 80 columns or 13370less to support environments and editors that 1) cannot display 13371or print more than 80 characters on a single line, and 2) cannot 13372disable line wrapping. 13373 13374A major restructuring of the namespace data structure has been 13375completed. The result is 1) cleaner and more 13376understandable/maintainable code, and 2) a significant reduction 13377in the dynamic memory requirement for each named ACPI object 13378(almost half). 13379 13380------------------------------------------- 13381Summary of changes for this label: 06_23_00 13382 13383Linux support has been added. In order to obtain approval to get 13384the ACPI CA subsystem into the Linux kernel, we've had to make 13385quite a few changes to the base subsystem that will affect all 13386users (all the changes are generic and OS- independent). The 13387effects of these global changes have been somewhat far reaching. 13388Files have been merged and/or renamed and interfaces have been 13389renamed. The major changes are described below. 13390 13391Osd* interfaces renamed to AcpiOs* to eliminate namespace 13392pollution/confusion within our target kernels. All OSD 13393interfaces must be modified to match the new naming convention. 13394 13395Files merged across the subsystem. A number of the smaller source 13396and header files have been merged to reduce the file count and 13397increase the density of the existing files. There are too many 13398to list here. In general, makefiles that call out individual 13399files will require rebuilding. 13400 13401Interpreter files renamed. All interpreter files now have the 13402prefix am* instead of ie* and is*. 13403 13404Header files renamed: The acapi.h file is now acpixf.h. The 13405acpiosd.h file is now acpiosxf.h. We are removing references to 13406the acronym "API" since it is somewhat windowsy. The new name is 13407"external interface" or xface or xf in the filenames.j 13408 13409 13410All manifest constants have been forced to upper case (some were 13411mixed case.) Also, the string "ACPI_" has been prepended to many 13412(not all) of the constants, typedefs, and structs. 13413 13414The globals "DebugLevel" and "DebugLayer" have been renamed 13415"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 13416 13417All other globals within the subsystem are now prefixed with 13418"AcpiGbl_" Internal procedures within the subsystem are now 13419prefixed with "Acpi" (with only a few exceptions). The original 13420two-letter abbreviation for the subcomponent remains after "Acpi" 13421- for example, CmCallocate became AcpiCmCallocate. 13422 13423Added a source code translation/conversion utility. Used to 13424generate the Linux source code, it can be modified to generate 13425other types of source as well. Can also be used to cleanup 13426existing source by removing extraneous spaces and blank lines. 13427Found in tools/acpisrc/* 13428 13429OsdUnMapMemory was renamed to OsdUnmapMemory and then 13430AcpiOsUnmapMemory. (UnMap became Unmap). 13431 13432A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 13433When set to one, this indicates that the caller wants to use the 13434 13435semaphore as a mutex, not a counting semaphore. ACPI CA uses 13436both types. However, implementers of this call may want to use 13437different OS primitives depending on the type of semaphore 13438requested. For example, some operating systems provide separate 13439 13440"mutex" and "semaphore" interfaces - where the mutex interface is 13441much faster because it doesn't have all the overhead of a full 13442semaphore implementation. 13443 13444Fixed a deadlock problem where a method that accesses the PCI 13445address space can block forever if it is the first access to the 13446space. 13447 13448------------------------------------------- 13449Summary of changes for this label: 06_02_00 13450 13451Support for environments that cannot handle unaligned data 13452accesses (e.g. firmware and OS environments devoid of alignment 13453handler technology namely SAL/EFI and the IA-64 Linux kernel) has 13454been added (via configurable macros) in these three areas: - 13455Transfer of data from the raw AML byte stream is done via byte 13456moves instead of word/dword/qword moves. - External objects are 13457aligned within the user buffer, including package elements (sub- 13458objects). - Conversion of name strings to UINT32 Acpi Names is now 13459done byte-wise. 13460 13461The Store operator was modified to mimic Microsoft's 13462implementation when storing to a Buffer Field. 13463 13464Added a check of the BM_STS bit before entering C3. 13465 13466The methods subdirectory has been obsoleted and removed. A new 13467file, cmeval.c subsumes the functionality. 13468 13469A 16-bit (DOS) version of AcpiExec has been developed. The 13470makefile is under the acpiexec directory. 13471