changes.txt revision 209746
1---------------------------------------- 202 July 2010. Summary of changes for version 20100702: 3 4This release is available at www.acpica.org/downloads 5 61) ACPI CA Core Subsystem: 7 8Implemented several updates to the recently added GPE reference count 9support. The model for "wake" GPEs is changing to give the host OS complete 10control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 11methods, since the host already must execute them. Also, additional changes 12were made to help ensure that the reference counts are kept in proper 13synchronization with reality. Rafael J. Wysocki. 14 151) Ensure that GPEs are not enabled twice during initialization. 162) Ensure that GPE enable masks stay in sync with the reference count. 173) Do not inadvertently enable GPEs when writing GPE registers. 184) Remove the internal wake reference counter and add new AcpiGpeWakeup 19interface. This interface will set or clear individual GPEs for wakeup. 205) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 21are now used for "runtime" GPEs only. 22 23Changed the behavior of the GPE install/remove handler interfaces. The GPE is 24no longer disabled during this process, as it was found to cause problems on 25some machines. Rafael J. Wysocki. 26 27Reverted a change introduced in version 20100528 to enable Embedded 28Controller multi-byte transfers. This change was found to cause problems with 29Index Fields and possibly Bank Fields. It will be reintroduced when these 30problems have been resolved. 31 32Fixed a problem with references to Alias objects within Package Objects. A 33reference to an Alias within the definition of a Package was not always 34resolved properly. Aliases to objects like Processors, Thermal zones, etc. 35were resolved to the actual object instead of a reference to the object as it 36should be. Package objects are only allowed to contain integer, string, 37buffer, package, and reference objects. Redhat bugzilla 608648. 38 39Example Code and Data Size: These are the sizes for the OS-independent 40acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 41debug version of the code includes the debug output trace mechanism and has a 42much larger code and data size. 43 44 Previous Release: 45 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 46 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 47 Current Release: 48 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 49 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 50 512) iASL Compiler/Disassembler and Tools: 52 53iASL: Implemented a new compiler subsystem to allow definition and 54compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 55are called "ACPI Data Tables", and the new compiler is the "Data Table 56Compiler". This compiler is intended to simplify the existing error-prone 57process of creating these tables for the BIOS, as well as allowing the 58disassembly, modification, recompilation, and override of existing ACPI data 59tables. See the iASL User Guide for detailed information. 60 61iASL: Implemented a new Template Generator option in support of the new Data 62Table Compiler. This option will create examples of all known ACPI tables 63that can be used as the basis for table development. See the iASL 64documentation and the -T option. 65 66Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 67Descriptor Table). 68 69Updated the Linux makefiles for iASL and AcpiExec to place the generated 70object files in the local directory so that there can be no collisions 71between the shared files between them that are generated with different 72options. 73 74Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 75the #define __APPLE__ to enable this support. 76 77---------------------------------------- 7828 May 2010. Summary of changes for version 20100528: 79 80This release is available at www.acpica.org/downloads 81 82Note: The ACPI 4.0a specification was released on April 5, 2010 and is 83available at www.acpi.info. This is primarily an errata release. 84 851) ACPI CA Core Subsystem: 86 87Undefined ACPI tables: We are looking for the definitions for the following 88ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 89 90Implemented support to enable multi-byte transfers for Embedded Controller 91(EC) operation regions. Previously, the maximum data size passed to the EC 92operation region handler was a single byte. There are often EC Fields larger 93than one byte that need to be transferred, and it is useful for the EC driver 94to lock these as a single transaction. This change enables single transfers 95larger than 8 bits. This effectively changes the access to the EC space from 96ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 97Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 98transfers. Alexey Starikovskiy, Lin Ming 99 100Implemented a performance enhancement for namespace search and access. This 101change enhances the performance of namespace searches and walks by adding a 102backpointer to the parent in each namespace node. On large namespaces, this 103change can improve overall ACPI performance by up to 9X. Adding a pointer to 104each namespace node increases the overall size of the internal namespace by 105about 5%, since each namespace entry usually consists of both a namespace 106node and an ACPI operand object. However, this is the first growth of the 107namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 108 109Implemented a performance optimization that reduces the number of namespace 110walks. On control method exit, only walk the namespace if the method is known 111to have created namespace objects outside of its local scope. Previously, the 112entire namespace was traversed on each control method exit. This change can 113improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 114 115Added support to truncate I/O addresses to 16 bits for Windows compatibility. 116Some ASL code has been seen in the field that inadvertently has bits set 117above bit 15. This feature is optional and is enabled if the BIOS requests 118any Windows OSI strings. It can also be enabled by the host OS. Matthew 119Garrett, Bob Moore. 120 121Added support to limit the maximum time for the ASL Sleep() operator. To 122prevent accidental deep sleeps, limit the maximum time that Sleep() will 123actually sleep. Configurable, the default maximum is two seconds. ACPICA 124bugzilla 854. 125 126Added run-time validation support for the _WDG and_WED Microsoft predefined 127methods. These objects are defined by "Windows Instrumentation", and are not 128part of the ACPI spec. ACPICA BZ 860. 129 130Expanded all statistic counters used during namespace and device 131initialization from 16 to 32 bits in order to support very large namespaces. 132 133Replaced all instances of %d in printf format specifiers with %u since nearly 134all integers in ACPICA are unsigned. 135 136Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 137as AE_NO_HANDLER. 138 139Example Code and Data Size: These are the sizes for the OS-independent 140acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 141debug version of the code includes the debug output trace mechanism and has a 142much larger code and data size. 143 144 Previous Release: 145 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 146 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 147 Current Release: 148 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 149 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 150 1512) iASL Compiler/Disassembler and Tools: 152 153iASL: Added compiler support for the _WDG and_WED Microsoft predefined 154methods. These objects are defined by "Windows Instrumentation", and are not 155part of the ACPI spec. ACPICA BZ 860. 156 157AcpiExec: added option to disable the memory tracking mechanism. The -dt 158option will disable the tracking mechanism, which improves performance 159considerably. 160 161AcpiExec: Restructured the command line options into -d (disable) and -e 162(enable) options. 163 164---------------------------------------- 16528 April 2010. Summary of changes for version 20100428: 166 1671) ACPI CA Core Subsystem: 168 169Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 170including FADT-based and GPE Block Devices, execute any _PRW methods in the 171new table, and process any _Lxx/_Exx GPE methods in the new table. Any 172runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 173immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 174Devices. Provides compatibility with other ACPI implementations. Two new 175files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 176 177Fixed a regression introduced in version 20100331 within the table manager 178where initial table loading could fail. This was introduced in the fix for 179AcpiReallocateRootTable. Also, renamed some of fields in the table manager 180data structures to clarify their meaning and use. 181 182Fixed a possible allocation overrun during internal object copy in 183AcpiUtCopySimpleObject. The original code did not correctly handle the case 184where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 185 186Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 187possible access beyond end-of-allocation. Also, now fully validate descriptor 188(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 189 190Example Code and Data Size: These are the sizes for the OS-independent 191acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 192debug version of the code includes the debug output trace mechanism and has a 193much larger code and data size. 194 195 Previous Release: 196 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 197 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 198 Current Release: 199 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 200 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 201 2022) iASL Compiler/Disassembler and Tools: 203 204iASL: Implemented Min/Max/Len/Gran validation for address resource 205descriptors. This change implements validation for the address fields that 206are common to all address-type resource descriptors. These checks are 207implemented: Checks for valid Min/Max, length within the Min/Max window, 208valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 209table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 210and aslrestype2.c files into five new files. ACPICA BZ 840. 211 212iASL: Added support for the _Wxx predefined names. This support was missing 213and these names were not recognized by the compiler as valid predefined 214names. ACPICA BZ 851. 215 216iASL: Added an error for all predefined names that are defined to return no 217value and thus must be implemented as Control Methods. These include all of 218the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 219names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 220 221iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 222ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 223dynamically loaded via the Load() operator. Also cleaned up output for the - 224ta and -tc options. ACPICA BZ 853. 225 226Tests: Added a new file with examples of extended iASL error checking. 227Demonstrates the advanced error checking ability of the iASL compiler. 228Available at tests/misc/badcode.asl. 229 230---------------------------------------- 23131 March 2010. Summary of changes for version 20100331: 232 2331) ACPI CA Core Subsystem: 234 235Completed a major update for the GPE support in order to improve support for 236shared GPEs and to simplify both host OS and ACPICA code. Added a reference 237count mechanism to support shared GPEs that require multiple device drivers. 238Several external interfaces have changed. One external interface has been 239removed. One new external interface was added. Most of the GPE external 240interfaces now use the GPE spinlock instead of the events mutex (and the 241Flags parameter for many GPE interfaces has been removed.) See the updated 242ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 243Wysocki. ACPICA BZ 831. 244 245Changed: 246 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 247Removed: 248 AcpiSetGpeType 249New: 250 AcpiSetGpe 251 252Implemented write support for DataTable operation regions. These regions are 253defined via the DataTableRegion() operator. Previously, only read support was 254implemented. The ACPI specification allows DataTableRegions to be read/write, 255however. 256 257Implemented a new subsystem option to force a copy of the DSDT to local 258memory. Optionally copy the entire DSDT to local memory (instead of simply 259mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 260the original DSDT, creating the need for this option. Default is FALSE, do 261not copy the DSDT. 262 263Implemented detection of a corrupted or replaced DSDT. This change adds 264support to detect a DSDT that has been corrupted and/or replaced from outside 265the OS (by firmware). This is typically catastrophic for the system, but has 266been seen on some machines. Once this problem has been detected, the DSDT 267copy option can be enabled via system configuration. Lin Ming, Bob Moore. 268 269Fixed two problems with AcpiReallocateRootTable during the root table copy. 270When copying the root table to the new allocation, the length used was 271incorrect. The new size was used instead of the current table size, meaning 272too much data was copied. Also, the count of available slots for ACPI tables 273was not set correctly. Alexey Starikovskiy, Bob Moore. 274 275Example Code and Data Size: These are the sizes for the OS-independent 276acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 277debug version of the code includes the debug output trace mechanism and has a 278much larger code and data size. 279 280 Previous Release: 281 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 282 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 283 Current Release: 284 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 285 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 286 2872) iASL Compiler/Disassembler and Tools: 288 289iASL: Implement limited typechecking for values returned from predefined 290control methods. The type of any returned static (unnamed) object is now 291validated. For example, Return(1). ACPICA BZ 786. 292 293iASL: Fixed a predefined name object verification regression. Fixes a problem 294introduced in version 20100304. An error is incorrectly generated if a 295predefined name is declared as a static named object with a value defined 296using the keywords "Zero", "One", or "Ones". Lin Ming. 297 298iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 299reducing the requested registry access rights. ACPICA BZ 842. 300 301Disassembler: fixed a possible fault when generating External() statements. 302Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 303(carat). Fixes a string length allocation calculation. Lin Ming. 304 305---------------------------------------- 30604 March 2010. Summary of changes for version 20100304: 307 3081) ACPI CA Core Subsystem: 309 310Fixed a possible problem with the AML Mutex handling function 311AcpiExReleaseMutex where the function could fault under the very rare 312condition when the interpreter has blocked, the interpreter lock is released, 313the interpreter is then reentered via the same thread, and attempts to 314acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 315Ming. 316 317Implemented additional configuration support for the AML "Debug Object". 318Output from the debug object can now be enabled via a global variable, 319AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 320This debug output is now available in the release version of ACPICA instead 321of just the debug version. Also, the entire debug output module can now be 322configured out of the ACPICA build if desired. One new file added, 323executer/exdebug.c. Lin Ming, Bob Moore. 324 325Added header support for the ACPI MCHI table (Management Controller Host 326Interface Table). This table was added in ACPI 4.0, but the defining document 327has only recently become available. 328 329Standardized output of integer values for ACPICA warnings/errors. Always use 3300x prefix for hex output, always use %u for unsigned integer decimal output. 331Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 332invocations.) These invocations were converted from the original 333ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 334 335Example Code and Data Size: These are the sizes for the OS-independent 336acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 337debug version of the code includes the debug output trace mechanism and has a 338much larger code and data size. 339 340 Previous Release: 341 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 342 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 343 Current Release: 344 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 345 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 346 3472) iASL Compiler/Disassembler and Tools: 348 349iASL: Implemented typechecking support for static (non-control method) 350predefined named objects that are declared with the Name() operator. For 351example, the type of this object is now validated to be of type Integer: 352Name(_BBN, 1). This change migrates the compiler to using the core predefined 353name table instead of maintaining a local version. Added a new file, 354aslpredef.c. ACPICA BZ 832. 355 356Disassembler: Added support for the ACPI 4.0 MCHI table. 357 358---------------------------------------- 35921 January 2010. Summary of changes for version 20100121: 360 3611) ACPI CA Core Subsystem: 362 363Added the 2010 copyright to all module headers and signons. This affects 364virtually every file in the ACPICA core subsystem, the iASL compiler, the 365tools/utilities, and the test suites. 366 367Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 368invocations of the _STA method. In the case where a specific _HID is 369requested, do not run _STA until a _HID match is found. This eliminates 370potentially dozens of _STA calls during a search for a particular device/HID, 371which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 372 373Implemented an additional repair for predefined method return values. Attempt 374to repair unexpected NULL elements within returned Package objects. Create an 375Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 376ACPICA BZ 818. Lin Ming, Bob Moore. 377 378Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 379code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 38064-bit AML integers). It is now obsolete and this change removes it from the 381ACPICA code base, replaced by UINT64. The original typedef has been retained 382for now for compatibility with existing device driver code. ACPICA BZ 824. 383 384Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 385the parse tree object. 386 387Added additional warning options for the gcc-4 generation. Updated the source 388accordingly. This includes some code restructuring to eliminate unreachable 389code, elimination of some gotos, elimination of unused return values, some 390additional casting, and removal of redundant declarations. 391 392Example Code and Data Size: These are the sizes for the OS-independent 393acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 394debug version of the code includes the debug output trace mechanism and has a 395much larger code and data size. 396 397 Previous Release: 398 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 399 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 400 Current Release: 401 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 402 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 403 4042) iASL Compiler/Disassembler and Tools: 405 406No functional changes for this release. 407 408---------------------------------------- 40914 December 2009. Summary of changes for version 20091214: 410 4111) ACPI CA Core Subsystem: 412 413Enhanced automatic data type conversions for predefined name repairs. This 414change expands the automatic repairs/conversions for predefined name return 415values to make Integers, Strings, and Buffers fully interchangeable. Also, a 416Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 417module was completely restructured. Lin Ming, Bob Moore. 418 419Implemented automatic removal of null package elements during predefined name 420repairs. This change will automatically remove embedded and trailing NULL 421package elements from returned package objects that are defined to contain a 422variable number of sub-packages. The driver is then presented with a package 423with no null elements to deal with. ACPICA BZ 819. 424 425Implemented a repair for the predefined _FDE and _GTM names. The expected 426return value for both names is a Buffer of 5 DWORDs. This repair fixes two 427possible problems (both seen in the field), where a package of integers is 428returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 429 430Implemented additional module-level code support. This change will properly 431execute module-level code that is not at the root of the namespace (under a 432Device object, etc.). Now executes the code within the current scope instead 433of the root. ACPICA BZ 762. Lin Ming. 434 435Fixed possible mutex acquisition errors when running _REG methods. Fixes a 436problem where mutex errors can occur when running a _REG method that is in 437the same scope as a method-defined operation region or an operation region 438under a module-level IF block. This type of code is rare, so the problem has 439not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 440 441Fixed a possible memory leak during module-level code execution. An object 442could be leaked for each block of executed module-level code if the 443interpreter slack mode is enabled This change deletes any implicitly returned 444object from the module-level code block. Lin Ming. 445 446Removed messages for successful predefined repair(s). The repair mechanism 447was considered too wordy. Now, messages are only unconditionally emitted if 448the return object cannot be repaired. Existing messages for successful 449repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 450 451Example Code and Data Size: These are the sizes for the OS-independent 452acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 453debug version of the code includes the debug output trace mechanism and has a 454much larger code and data size. 455 456 Previous Release: 457 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 458 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 459 Current Release: 460 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 461 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 462 4632) iASL Compiler/Disassembler and Tools: 464 465iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 466were no longer automatically removed at the termination of the compile. 467 468acpiexec: Implemented the -f option to specify default region fill value. 469This option specifies the value used to initialize buffers that simulate 470operation regions. Default value is zero. Useful for debugging problems that 471depend on a specific initial value for a region or field. 472 473---------------------------------------- 47412 November 2009. Summary of changes for version 20091112: 475 4761) ACPI CA Core Subsystem: 477 478Implemented a post-order callback to AcpiWalkNamespace. The existing 479interface only has a pre-order callback. This change adds an additional 480parameter for a post-order callback which will be more useful for bus scans. 481ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 482 483Modified the behavior of the operation region memory mapping cache for 484SystemMemory. Ensure that the memory mappings created for operation regions 485do not cross 4K page boundaries. Crossing a page boundary while mapping 486regions can cause kernel warnings on some hosts if the pages have different 487attributes. Such regions are probably BIOS bugs, and this is the workaround. 488Linux BZ 14445. Lin Ming. 489 490Implemented an automatic repair for predefined methods that must return 491sorted lists. This change will repair (by sorting) packages returned by _ALR, 492_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 493and do not contain NULL package elements. Adds one new file, 494namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 495 496Fixed a possible fault during predefined name validation if a return Package 497object contains NULL elements. Also adds a warning if a NULL element is 498followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 499include repair or removal of all such NULL elements where possible. 500 501Implemented additional module-level executable AML code support. This change 502will execute module-level code that is not at the root of the namespace 503(under a Device object, etc.) at table load time. Module-level executable AML 504code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 505 506Implemented a new internal function to create Integer objects. This function 507simplifies miscellaneous object creation code. ACPICA BZ 823. 508 509Reduced the severity of predefined repair messages, Warning to Info. Since 510the object was successfully repaired, a warning is too severe. Reduced to an 511info message for now. These messages may eventually be changed to debug-only. 512ACPICA BZ 812. 513 514Example Code and Data Size: These are the sizes for the OS-independent 515acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 516debug version of the code includes the debug output trace mechanism and has a 517much larger code and data size. 518 519 Previous Release: 520 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 521 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 522 Current Release: 523 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 524 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 525 5262) iASL Compiler/Disassembler and Tools: 527 528iASL: Implemented Switch() with While(1) so that Break works correctly. This 529change correctly implements the Switch operator with a surrounding While(1) 530so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 531 532iASL: Added a message if a package initializer list is shorter than package 533length. Adds a new remark for a Package() declaration if an initializer list 534exists, but is shorter than the declared length of the package. Although 535technically legal, this is probably a coding error and it is seen in the 536field. ACPICA BZ 815. Lin Ming, Bob Moore. 537 538iASL: Fixed a problem where the compiler could fault after the maximum number 539of errors was reached (200). 540 541acpixtract: Fixed a possible warning for pointer cast if the compiler warning 542level set very high. 543 544---------------------------------------- 54513 October 2009. Summary of changes for version 20091013: 546 5471) ACPI CA Core Subsystem: 548 549Fixed a problem where an Operation Region _REG method could be executed more 550than once. If a custom address space handler is installed by the host before 551the "initialize operation regions" phase of the ACPICA initialization, any 552_REG methods for that address space could be executed twice. This change 553fixes the problem. ACPICA BZ 427. Lin Ming. 554 555Fixed a possible memory leak for the Scope() ASL operator. When the exact 556invocation of "Scope(\)" is executed (change scope to root), one internal 557operand object was leaked. Lin Ming. 558 559Implemented a run-time repair for the _MAT predefined method. If the _MAT 560return value is defined as a Field object in the AML, and the field 561size is less than or equal to the default width of an integer (32 or 64),_MAT 562can incorrectly return an Integer instead of a Buffer. ACPICA now 563automatically repairs this problem. ACPICA BZ 810. 564 565Implemented a run-time repair for the _BIF and _BIX predefined methods. The 566"OEM Information" field is often incorrectly returned as an Integer with 567value zero if the field is not supported by the platform. This is due to an 568ambiguity in the ACPI specification. The field should always be a string. 569ACPICA now automatically repairs this problem by returning a NULL string 570within the returned Package. ACPICA BZ 807. 571 572Example Code and Data Size: These are the sizes for the OS-independent 573acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 574debug version of the code includes the debug output trace mechanism and has a 575much larger code and data size. 576 577 Previous Release: 578 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 579 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 580 Current Release: 581 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 582 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 583 5842) iASL Compiler/Disassembler and Tools: 585 586Disassembler: Fixed a problem where references to external symbols that 587contained one or more parent-prefixes (carats) were not handled correctly, 588possibly causing a fault. ACPICA BZ 806. Lin Ming. 589 590Disassembler: Restructured the code so that all functions that handle 591external symbols are in a single module. One new file is added, 592common/dmextern.c. 593 594AML Debugger: Added a max count argument for the Batch command (which 595executes multiple predefined methods within the namespace.) 596 597iASL: Updated the compiler documentation (User Reference.) Available at 598http://www.acpica.org/documentation/. ACPICA BZ 750. 599 600AcpiXtract: Updated for Lint and other formatting changes. Close all open 601files. 602 603---------------------------------------- 60403 September 2009. Summary of changes for version 20090903: 605 6061) ACPI CA Core Subsystem: 607 608For Windows Vista compatibility, added the automatic execution of an _INI 609method located at the namespace root (\_INI). This method is executed at 610table load time. This support is in addition to the automatic execution of 611\_SB._INI. Lin Ming. 612 613Fixed a possible memory leak in the interpreter for AML package objects if 614the package initializer list is longer than the defined size of the package. 615This apparently can only happen if the BIOS changes the package size on the 616fly (seen in a _PSS object), as ASL compilers do not allow this. The 617interpreter will truncate the package to the defined size (and issue an error 618message), but previously could leave the extra objects undeleted if they were 619pre-created during the argument processing (such is the case if the package 620consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 621 622Fixed a problem seen when a Buffer or String is stored to itself via ASL. 623This has been reported in the field. Previously, ACPICA would zero out the 624buffer/string. Now, the operation is treated as a noop. Provides Windows 625compatibility. ACPICA BZ 803. Lin Ming. 626 627Removed an extraneous error message for ASL constructs of the form 628Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 629are seen in many BIOSs and are once again treated as NOOPs and no error is 630emitted when they are encountered. ACPICA BZ 785. 631 632Fixed an extraneous warning message if a _DSM reserved method returns a 633Package object. _DSM can return any type of object, so validation on the 634return type cannot be performed. ACPICA BZ 802. 635 636Example Code and Data Size: These are the sizes for the OS-independent 637acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 638debug version of the code includes the debug output trace mechanism and has a 639much larger code and data size. 640 641 Previous Release: 642 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 643 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 644 Current Release: 645 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 646 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 647 6482) iASL Compiler/Disassembler and Tools: 649 650iASL: Fixed a problem with the use of the Alias operator and Resource 651Templates. The correct alias is now constructed and no error is emitted. 652ACPICA BZ 738. 653 654iASL: Implemented the -I option to specify additional search directories for 655include files. Allows multiple additional search paths for include files. 656Directories are searched in the order specified on the command line (after 657the local directory is searched.) ACPICA BZ 800. 658 659iASL: Fixed a problem where the full pathname for include files was not 660emitted for warnings/errors. This caused the IDE support to not work 661properly. ACPICA BZ 765. 662 663iASL: Implemented the -@ option to specify a Windows-style response file 664containing additional command line options. ACPICA BZ 801. 665 666AcpiExec: Added support to load multiple AML files simultaneously (such as a 667DSDT and multiple SSDTs). Also added support for wildcards within the AML 668pathname. These features allow all machine tables to be easily loaded and 669debugged together. ACPICA BZ 804. 670 671Disassembler: Added missing support for disassembly of HEST table Error Bank 672subtables. 673 674---------------------------------------- 67530 July 2009. Summary of changes for version 20090730: 676 677The ACPI 4.0 implementation for ACPICA is complete with this release. 678 6791) ACPI CA Core Subsystem: 680 681ACPI 4.0: Added header file support for all new and changed ACPI tables. 682Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 683for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 684EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 685have been some ACPI 4.0 changes to other existing tables. Split the large 686actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 687 688ACPI 4.0: Implemented predefined name validation for all new names. There are 68931 new names in ACPI 4.0. The predefined validation module was split into two 690files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 691 692Implemented support for so-called "module-level executable code". This is 693executable AML code that exists outside of any control method and is intended 694to be executed at table load time. Although illegal since ACPI 2.0, this type 695of code still exists and is apparently still being created. Blocks of this 696code are now detected and executed as intended. Currently, the code blocks 697must exist under either an If, Else, or While construct; these are the 698typical cases seen in the field. ACPICA BZ 762. Lin Ming. 699 700Implemented an automatic dynamic repair for predefined names that return 701nested Package objects. This applies to predefined names that are defined to 702return a variable-length Package of sub-packages. If the number of sub- 703packages is one, BIOS code is occasionally seen that creates a simple single 704package with no sub-packages. This code attempts to fix the problem by 705wrapping a new package object around the existing package. These methods can 706be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 707790. 708 709Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 710The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 711BZ 793. 712 713Fixed a problem with AcpiReset where the reset would silently fail if the 714register was one of the protected I/O ports. AcpiReset now bypasses the port 715validation mechanism. This may eventually be driven into the AcpiRead/Write 716interfaces. 717 718Fixed a regression related to the recent update of the AcpiRead/Write 719interfaces. A sleep/suspend could fail if the optional PM2 Control register 720does not exist during an attempt to write the Bus Master Arbitration bit. 721(However, some hosts already delete the code that writes this bit, and the 722code may in fact be obsolete at this date.) ACPICA BZ 799. 723 724Fixed a problem where AcpiTerminate could fault if inadvertently called twice 725in succession. ACPICA BZ 795. 726 727Example Code and Data Size: These are the sizes for the OS-independent 728acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 729debug version of the code includes the debug output trace mechanism and has a 730much larger code and data size. 731 732 Previous Release: 733 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 734 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 735 Current Release: 736 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 737 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 738 7392) iASL Compiler/Disassembler and Tools: 740 741ACPI 4.0: Implemented disassembler support for all new ACPI tables and 742changes to existing tables. ACPICA BZ 775. 743 744---------------------------------------- 74525 June 2009. Summary of changes for version 20090625: 746 747The ACPI 4.0 Specification was released on June 16 and is available at 748www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 749continue for the next few releases. 750 7511) ACPI CA Core Subsystem: 752 753ACPI 4.0: Implemented interpreter support for the IPMI operation region 754address space. Includes support for bi-directional data buffers and an IPMI 755address space handler (to be installed by an IPMI device driver.) ACPICA BZ 756773. Lin Ming. 757 758ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 759support in both the header files and the disassembler. 760 761Completed a major update for the AcpiGetObjectInfo external interface. 762Changes include: 763 - Support for variable, unlimited length HID, UID, and CID strings. 764 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 765 - Call the _SxW power methods on behalf of a device object. 766 - Determine if a device is a PCI root bridge. 767 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 768These changes will require an update to all callers of this interface. See 769the updated ACPICA Programmer Reference for details. One new source file has 770been added - utilities/utids.c. ACPICA BZ 368, 780. 771 772Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 773transfers. The Value parameter has been extended from 32 bits to 64 bits in 774order to support new ACPI 4.0 tables. These changes will require an update to 775all callers of these interfaces. See the ACPICA Programmer Reference for 776details. ACPICA BZ 768. 777 778Fixed several problems with AcpiAttachData. The handler was not invoked when 779the host node was deleted. The data sub-object was not automatically deleted 780when the host node was deleted. The interface to the handler had an unused 781parameter, this was removed. ACPICA BZ 778. 782 783Enhanced the function that dumps ACPI table headers. All non-printable 784characters in the string fields are now replaced with '?' (Signature, OemId, 785OemTableId, and CompilerId.) ACPI tables with non-printable characters in 786these fields are occasionally seen in the field. ACPICA BZ 788. 787 788Fixed a problem with predefined method repair code where the code that 789attempts to repair/convert an object of incorrect type is only executed on 790the first time the predefined method is called. The mechanism that disables 791warnings on subsequent calls was interfering with the repair mechanism. 792ACPICA BZ 781. 793 794Fixed a possible memory leak in the predefined validation/repair code when a 795buffer is automatically converted to an expected string object. 796 797Removed obsolete 16-bit files from the distribution and from the current git 798tree head. ACPICA BZ 776. 799 800Example Code and Data Size: These are the sizes for the OS-independent 801acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 802debug version of the code includes the debug output trace mechanism and has a 803much larger code and data size. 804 805 Previous Release: 806 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 807 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 808 Current Release: 809 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 810 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 811 8122) iASL Compiler/Disassembler and Tools: 813 814ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 815operation region keyword. ACPICA BZ 771, 772. Lin Ming. 816 817ACPI 4.0: iASL - implemented compile-time validation support for all new 818predefined names and control methods (31 total). ACPICA BZ 769. 819 820---------------------------------------- 82121 May 2009. Summary of changes for version 20090521: 822 8231) ACPI CA Core Subsystem: 824 825Disabled the preservation of the SCI enable bit in the PM1 control register. 826The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 827a "preserved" bit - "OSPM always preserves this bit position", section 8284.7.3.2.1. However, some machines fail if this bit is in fact preserved 829because the bit needs to be explicitly set by the OS as a workaround. No 830machines fail if the bit is not preserved. Therefore, ACPICA no longer 831attempts to preserve this bit. 832 833Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 834incorrectly formed _PRT package could cause a fault. Added validation to 835ensure that each package element is actually a sub-package. 836 837Implemented a new interface to install or override a single control method, 838AcpiInstallMethod. This interface is useful when debugging in order to repair 839an existing method or to install a missing method without having to override 840the entire ACPI table. See the ACPICA Programmer Reference for use and 841examples. Lin Ming, Bob Moore. 842 843Fixed several reference count issues with the DdbHandle object that is 844created from a Load or LoadTable operator. Prevent premature deletion of the 845object. Also, mark the object as invalid once the table has been unloaded. 846This is needed because the handle itself may not be deleted after the table 847unload, depending on whether it has been stored in a named object by the 848caller. Lin Ming. 849 850Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 851mutexes of the same sync level are acquired but then not released in strict 852opposite order, the internally maintained Current Sync Level becomes confused 853and can cause subsequent execution errors. ACPICA BZ 471. 854 855Changed the allowable release order for ASL mutex objects. The ACPI 4.0 856specification has been changed to make the SyncLevel for mutex objects more 857useful. When releasing a mutex, the SyncLevel of the mutex must now be the 858same as the current sync level. This makes more sense than the previous rule 859(SyncLevel less than or equal). This change updates the code to match the 860specification. 861 862Fixed a problem with the local version of the AcpiOsPurgeCache function. The 863(local) cache must be locked during all cache object deletions. Andrew 864Baumann. 865 866Updated the Load operator to use operation region interfaces. This replaces 867direct memory mapping with region access calls. Now, all region accesses go 868through the installed region handler as they should. 869 870Simplified and optimized the NsGetNextNode function. Reduced parameter count 871and reduced code for this frequently used function. 872 873Example Code and Data Size: These are the sizes for the OS-independent 874acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 875debug version of the code includes the debug output trace mechanism and has a 876much larger code and data size. 877 878 Previous Release: 879 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 880 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 881 Current Release: 882 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 883 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 884 8852) iASL Compiler/Disassembler and Tools: 886 887Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 888with sub-table disassembly and handling invalid sub-tables. Attempt recovery 889after an invalid sub-table ID. 890 891---------------------------------------- 89222 April 2009. Summary of changes for version 20090422: 893 8941) ACPI CA Core Subsystem: 895 896Fixed a compatibility issue with the recently released I/O port protection 897mechanism. For windows compatibility, 1) On a port protection violation, 898simply ignore the request and do not return an exception (allow the control 899method to continue execution.) 2) If only part of the request overlaps a 900protected port, read/write the individual ports that are not protected. Linux 901BZ 13036. Lin Ming 902 903Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 904breaks into the AML debugger if the debugger is present. This matches the 905ACPI-defined behavior. 906 907Fixed several possible warnings related to the use of the configurable 908ACPI_THREAD_ID. This type can now be configured as either an integer or a 909pointer with no warnings. Also fixes several warnings in printf-like 910statements for the 64-bit build when the type is configured as a pointer. 911ACPICA BZ 766, 767. 912 913Fixed a number of possible warnings when compiling with gcc 4+ (depending on 914warning options.) Examples include printf formats, aliasing, unused globals, 915missing prototypes, missing switch default statements, use of non-ANSI 916library functions, use of non-ANSI constructs. See generate/unix/Makefile for 917a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 918 919Example Code and Data Size: These are the sizes for the OS-independent 920acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 921debug version of the code includes the debug output trace mechanism and has a 922much larger code and data size. 923 924 Previous Release: 925 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 926 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 927 Current Release: 928 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 929 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 930 9312) iASL Compiler/Disassembler and Tools: 932 933iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 934the 64-bit build. 935 936iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 937correctly digest Windows/DOS formatted files (with CR/LF). 938 939iASL: Added a new option for "quiet mode" (-va) that produces only the 940compilation summary, not individual errors and warnings. Useful for large 941batch compilations. 942 943AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 944timeout that can be used to detect hang conditions during execution of AML 945code (includes both internal semaphores and AML-defined mutexes and events.) 946 947Added new makefiles for the generation of acpica in a generic unix-like 948environment. These makefiles are intended to generate the acpica tools and 949utilities from the original acpica git source tree structure. 950 951Test Suites: Updated and cleaned up the documentation files. Updated the 952copyrights to 2009, affecting all source files. Use the new version of iASL 953with quiet mode. Increased the number of available semaphores in the Windows 954OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 955an alternate implementation of the semaphore timeout to allow aslts to 956execute fully on Cygwin. 957 958---------------------------------------- 95920 March 2009. Summary of changes for version 20090320: 960 9611) ACPI CA Core Subsystem: 962 963Fixed a possible race condition between AcpiWalkNamespace and dynamic table 964unloads. Added a reader/writer locking mechanism to allow multiple concurrent 965namespace walks (readers), but block a dynamic table unload until it can gain 966exclusive write access to the namespace. This fixes a problem where a table 967unload could (possibly catastrophically) delete the portion of the namespace 968that is currently being examined by a walk. Adds a new file, utlock.c, that 969implements the reader/writer lock mechanism. ACPICA BZ 749. 970 971Fixed a regression introduced in version 20090220 where a change to the FADT 972handling could cause the ACPICA subsystem to access non-existent I/O ports. 973 974Modified the handling of FADT register and table (FACS/DSDT) addresses. The 975FADT can contain both 32-bit and 64-bit versions of these addresses. 976Previously, the 64-bit versions were favored, meaning that if both 32 and 64 977versions were valid, but not equal, the 64-bit version was used. This was 978found to cause some machines to fail. Now, in this case, the 32-bit version 979is used instead. This now matches the Windows behavior. 980 981Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 982compatibility and protects the standard PC I/O ports from access via AML 983code. Adds a new file, hwvalid.c 984 985Fixed a possible extraneous warning message from the FADT support. The 986message warns of a 32/64 length mismatch between the legacy and GAS 987definitions for a register. 988 989Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 990made obsolete by the port protection mechanism above. It was previously used 991to validate the entire address range of an operation region, which could be 992incorrect if the range included illegal ports, but fields within the 993operation region did not actually access those ports. Validation is now 994performed on a per-field basis instead of the entire region. 995 996Modified the handling of the PM1 Status Register ignored bit (bit 11.) 997Ignored bits must be "preserved" according to the ACPI spec. Usually, this 998means a read/modify/write when writing to the register. However, for status 999registers, writing a one means clear the event. Writing a zero means preserve 1000the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1001and the ACPICA code now simply always writes a zero to the ignored bit. 1002 1003Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1004per the ACPI specification, for the control registers, preserve 1005(read/modify/write) all bits that are defined as either reserved or ignored. 1006 1007Updated the handling of write-only bits in the PM1 A/B Control Registers. 1008When reading the register, zero the write-only bits as per the ACPI spec. 1009ACPICA BZ 443. Lin Ming. 1010 1011Removed "Linux" from the list of supported _OSI strings. Linux no longer 1012wants to reply true to this request. The Windows strings are the only paths 1013through the AML that are tested and known to work properly. 1014 1015 Previous Release: 1016 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1017 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1018 Current Release: 1019 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1020 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1021 10222) iASL Compiler/Disassembler and Tools: 1023 1024Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1025aetables.c 1026 1027---------------------------------------- 102820 February 2009. Summary of changes for version 20090220: 1029 10301) ACPI CA Core Subsystem: 1031 1032Optimized the ACPI register locking. Removed locking for reads from the ACPI 1033bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1034not required when reading the single-bit registers. The 1035AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1036This will improve performance for reads on these registers. ACPICA BZ 760. 1037 1038Fixed the parameter validation for AcpiRead/Write. Now return 1039AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1040the register has an address of zero. Previously, these cases simply returned 1041AE_OK. For optional registers such as PM1B status/enable/control, the caller 1042should check for a valid register address before calling. ACPICA BZ 748. 1043 1044Renamed the external ACPI bit register access functions. Renamed 1045AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1046functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1047Also, restructured the code for these functions by simplifying the code path 1048and condensing duplicate code to reduce code size. 1049 1050Added new functions to transparently handle the possibly split PM1 A/B 1051registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1052now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1053746. 1054 1055Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1056This function writes both of the PM1 control registers (A/B). These registers 1057are different than the PM1 A/B status and enable registers in that different 1058values can be written to the A/B registers. Most notably, the SLP_TYP bits 1059can be different, as per the values returned from the _Sx predefined methods. 1060 1061Removed an extra register write within AcpiHwClearAcpiStatus. This function 1062was writing an optional PM1B status register twice. The existing call to the 1063low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1064register. ACPICA BZ 751. 1065 1066Split out the PM1 Status registers from the FADT. Added new globals for these 1067registers (A/B), similar to the way the PM1 Enable registers are handled. 1068Instead of overloading the FADT Event Register blocks. This makes the code 1069clearer and less prone to error. 1070 1071Fixed the warning message for when the platform contains too many ACPI tables 1072for the default size of the global root table data structure. The calculation 1073for the truncation value was incorrect. 1074 1075Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1076obsolete macro, since it is now a simple reference to ->common.type. There 1077were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1078 1079Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1080TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1081simply SLEEP_TYPE. ACPICA BZ 754. 1082 1083Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1084function is only needed on 64-bit host operating systems and is thus not 1085included for 32-bit hosts. 1086 1087Debug output: print the input and result for invocations of the _OSI reserved 1088control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1089verbosity of this debug level. Len Brown. 1090 1091Example Code and Data Size: These are the sizes for the OS-independent 1092acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1093debug version of the code includes the debug output trace mechanism and has a 1094much larger code and data size. 1095 1096 Previous Release: 1097 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1098 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1099 Current Release: 1100 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1101 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1102 11032) iASL Compiler/Disassembler and Tools: 1104 1105Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1106various legal performance profiles. 1107 1108---------------------------------------- 110923 January 2009. Summary of changes for version 20090123: 1110 11111) ACPI CA Core Subsystem: 1112 1113Added the 2009 copyright to all module headers and signons. This affects 1114virtually every file in the ACPICA core subsystem, the iASL compiler, and 1115the tools/utilities. 1116 1117Implemented a change to allow the host to override any ACPI table, including 1118dynamically loaded tables. Previously, only the DSDT could be replaced by the 1119host. With this change, the AcpiOsTableOverride interface is called for each 1120table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1121a table is dynamically loaded via the AML Load operator. 1122 1123Updated FADT flag definitions, especially the Boot Architecture flags. 1124 1125Debugger: For the Find command, automatically pad the input ACPI name with 1126underscores if the name is shorter than 4 characters. This enables a match 1127with the actual namespace entry which is itself padded with underscores. 1128 1129Example Code and Data Size: These are the sizes for the OS-independent 1130acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1131debug version of the code includes the debug output trace mechanism and has a 1132much larger code and data size. 1133 1134 Previous Release: 1135 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1136 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1137 Current Release: 1138 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1139 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1140 11412) iASL Compiler/Disassembler and Tools: 1142 1143Fix build error under Bison-2.4. 1144 1145Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1146flags. Now decode all flags, regardless of the FADT version. Flag output 1147includes the FADT version which first defined each flag. 1148 1149The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1150DSDT). Windows only. 1151 1152---------------------------------------- 115304 December 2008. Summary of changes for version 20081204: 1154 11551) ACPI CA Core Subsystem: 1156 1157The ACPICA Programmer Reference has been completely updated and revamped for 1158this release. This includes updates to the external interfaces, OSL 1159interfaces, the overview sections, and the debugger reference. 1160 1161Several new ACPICA interfaces have been implemented and documented in the 1162programmer reference: 1163AcpiReset - Writes the reset value to the FADT-defined reset register. 1164AcpiDisableAllGpes - Disable all available GPEs. 1165AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1166AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1167AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1168AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1169AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1170 1171Most of the public ACPI hardware-related interfaces have been moved to a new 1172file, components/hardware/hwxface.c 1173 1174Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1175register lengths within the FADT are now used, and the low level ACPI 1176register access no longer hardcodes the ACPI register lengths. Given that 1177there may be some risk in actually trusting the FADT register lengths, a run- 1178time option was added to fall back to the default hardcoded lengths if the 1179FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1180option is set to true for now, and a warning is issued if a suspicious FADT 1181register length is overridden with the default value. 1182 1183Fixed a reference count issue in NsRepairObject. This problem was introduced 1184in version 20081031 as part of a fix to repair Buffer objects within 1185Packages. Lin Ming. 1186 1187Added semaphore support to the Linux/Unix application OS-services layer 1188(OSL). ACPICA BZ 448. Lin Ming. 1189 1190Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1191be implemented in the OSL, or will binary semaphores be used instead. 1192 1193Example Code and Data Size: These are the sizes for the OS-independent 1194acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1195debug version of the code includes the debug output trace mechanism and has a 1196much larger code and data size. 1197 1198 Previous Release: 1199 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1200 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1201 Current Release: 1202 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1203 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1204 12052) iASL Compiler/Disassembler and Tools: 1206 1207iASL: Completed the '-e' option to include additional ACPI tables in order to 1208aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1209Ming. 1210 1211iASL: Removed the "named object in while loop" error. The compiler cannot 1212determine how many times a loop will execute. ACPICA BZ 730. 1213 1214Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1215BZ 743. 1216 1217Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1218 1219---------------------------------------- 122031 October 2008. Summary of changes for version 20081031: 1221 12221) ACPI CA Core Subsystem: 1223 1224Restructured the ACPICA header files into public/private. acpi.h now includes 1225only the "public" acpica headers. All other acpica headers are "private" and 1226should not be included by acpica users. One new file, accommon.h is used to 1227include the commonly used private headers for acpica code generation. Future 1228plans include moving all private headers to a new subdirectory. 1229 1230Implemented an automatic Buffer->String return value conversion for 1231predefined ACPI methods. For these methods (such as _BIF), added automatic 1232conversion for return objects that are required to be a String, but a Buffer 1233was found instead. This can happen when reading string battery data from an 1234operation region, because it used to be difficult to convert the data from 1235buffer to string from within the ASL. Ensures that the host OS is provided 1236with a valid null-terminated string. Linux BZ 11822. 1237 1238Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1239into two: one for the 32-bit vector, another for the 64-bit vector. This is 1240required because the host OS must setup the wake much differently for each 1241vector (real vs. protected mode, etc.) and the interface itself should not be 1242deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1243interface, as it served no purpose (only the firmware reads the vector, OS 1244only writes the vector.) ACPICA BZ 731. 1245 1246Implemented a mechanism to escape infinite AML While() loops. Added a loop 1247counter to force exit from AML While loops if the count becomes too large. 1248This can occur in poorly written AML when the hardware does not respond 1249within a while loop and the loop does not implement a timeout. The maximum 1250loop count is configurable. A new exception code is returned when a loop is 1251broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1252 1253Optimized the execution of AML While loops. Previously, a control state 1254object was allocated and freed for each execution of the loop. The 1255optimization is to simply reuse the control state for each iteration. This 1256speeds up the raw loop execution time by about 5%. 1257 1258Enhanced the implicit return mechanism. For Windows compatibility, return an 1259implicit integer of value zero for methods that contain no executable code. 1260Such methods are seen in the field as stubs (presumably), and can cause 1261drivers to fail if they expect a return value. Lin Ming. 1262 1263Allow multiple backslashes as root prefixes in namepaths. In a fully 1264qualified namepath, allow multiple backslash prefixes. This can happen (and 1265is seen in the field) because of the use of a double-backslash in strings 1266(since backslash is the escape character) causing confusion. ACPICA BZ 739 1267Lin Ming. 1268 1269Emit a warning if two different FACS or DSDT tables are discovered in the 1270FADT. Checks if there are two valid but different addresses for the FACS and 1271DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1272 1273Consolidated the method argument count validation code. Merged the code that 1274validates control method argument counts into the predefined validation 1275module. Eliminates possible multiple warnings for incorrect argument counts. 1276 1277Implemented ACPICA example code. Includes code for ACPICA initialization, 1278handler installation, and calling a control method. Available at 1279source/tools/examples. 1280 1281Added a global pointer for FACS table to simplify internal FACS access. Use 1282the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1283This simplifies the code for the Global Lock and the Firmware Waking 1284Vector(s). 1285 1286Example Code and Data Size: These are the sizes for the OS-independent 1287acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1288debug version of the code includes the debug output trace mechanism and has a 1289much larger code and data size. 1290 1291 Previous Release: 1292 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1293 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1294 Current Release: 1295 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1296 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1297 12982) iASL Compiler/Disassembler and Tools: 1299 1300iASL: Improved disassembly of external method calls. Added the -e option to 1301allow the inclusion of additional ACPI tables to help with the disassembly of 1302method invocations and the generation of external declarations during the 1303disassembly. Certain external method invocations cannot be disassembled 1304properly without the actual declaration of the method. Use the -e option to 1305include the table where the external method(s) are actually declared. Most 1306useful for disassembling SSDTs that make method calls back to the master 1307DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1308-e dsdt.aml ssdt1.aml 1309 1310iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1311problem where the use of an alias within a namepath would result in a not 1312found error or cause the compiler to fault. Also now allows forward 1313references from the Alias operator itself. ACPICA BZ 738. 1314 1315---------------------------------------- 131626 September 2008. Summary of changes for version 20080926: 1317 13181) ACPI CA Core Subsystem: 1319 1320Designed and implemented a mechanism to validate predefined ACPI methods and 1321objects. This code validates the predefined ACPI objects (objects whose names 1322start with underscore) that appear in the namespace, at the time they are 1323evaluated. The argument count and the type of the returned object are 1324validated against the ACPI specification. The purpose of this validation is 1325to detect problems with the BIOS-implemented predefined ACPI objects before 1326the results are returned to the ACPI-related drivers. Future enhancements may 1327include actual repair of incorrect return objects where possible. Two new 1328files are nspredef.c and acpredef.h. 1329 1330Fixed a fault in the AML parser if a memory allocation fails during the Op 1331completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1332 1333Fixed an issue with implicit return compatibility. This change improves the 1334implicit return mechanism to be more compatible with the MS interpreter. Lin 1335Ming, ACPICA BZ 349. 1336 1337Implemented support for zero-length buffer-to-string conversions. Allow zero 1338length strings during interpreter buffer-to-string conversions. For example, 1339during the ToDecimalString and ToHexString operators, as well as implicit 1340conversions. Fiodor Suietov, ACPICA BZ 585. 1341 1342Fixed two possible memory leaks in the error exit paths of 1343AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1344similar in that they use a stack of state objects in order to eliminate 1345recursion. The stack must be fully unwound and deallocated if an error 1346occurs. Lin Ming. ACPICA BZ 383. 1347 1348Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1349ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1350Moore ACPICA BZ 442. 1351 1352Removed the obsolete version number in module headers. Removed the 1353"$Revision" number that appeared in each module header. This version number 1354was useful under SourceSafe and CVS, but has no meaning under git. It is not 1355only incorrect, it could also be misleading. 1356 1357Example Code and Data Size: These are the sizes for the OS-independent 1358acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1359debug version of the code includes the debug output trace mechanism and has a 1360much larger code and data size. 1361 1362 Previous Release: 1363 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1364 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1365 Current Release: 1366 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1367 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1368 1369---------------------------------------- 137029 August 2008. Summary of changes for version 20080829: 1371 13721) ACPI CA Core Subsystem: 1373 1374Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1375Reference. Changes include the elimination of cheating on the Object field 1376for the DdbHandle subtype, addition of a reference class field to 1377differentiate the various reference types (instead of an AML opcode), and the 1378cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1379 1380Reduce an error to a warning for an incorrect method argument count. 1381Previously aborted with an error if too few arguments were passed to a 1382control method via the external ACPICA interface. Now issue a warning instead 1383and continue. Handles the case where the method inadvertently declares too 1384many arguments, but does not actually use the extra ones. Applies mainly to 1385the predefined methods. Lin Ming. Linux BZ 11032. 1386 1387Disallow the evaluation of named object types with no intrinsic value. Return 1388AE_TYPE for objects that have no value and therefore evaluation is undefined: 1389Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1390these types were allowed, but an exception would be generated at some point 1391during the evaluation. Now, the error is generated up front. 1392 1393Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1394(nsnames.c). Fixes a leak in the error exit path. 1395 1396Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1397levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1398interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1399ACPI_LV_EVENTS. 1400 1401Removed obsolete and/or unused exception codes from the acexcep.h header. 1402There is the possibility that certain device drivers may be affected if they 1403use any of these exceptions. 1404 1405The ACPICA documentation has been added to the public git source tree, under 1406acpica/documents. Included are the ACPICA programmer reference, the iASL 1407compiler reference, and the changes.txt release logfile. 1408 1409Example Code and Data Size: These are the sizes for the OS-independent 1410acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1411debug version of the code includes the debug output trace mechanism and has a 1412much larger code and data size. 1413 1414 Previous Release: 1415 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1416 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1417 Current Release: 1418 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1419 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1420 14212) iASL Compiler/Disassembler and Tools: 1422 1423Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1424defines _SCP with 3 arguments. Previous versions defined it with only 1 1425argument. iASL now allows both definitions. 1426 1427iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1428length subtables when disassembling ACPI tables. Also fixed a couple of 1429errors where a full 16-bit table type field was not extracted from the input 1430properly. 1431 1432acpisrc: Improve comment counting mechanism for generating source code 1433statistics. Count first and last lines of multi-line comments as whitespace, 1434not comment lines. Handle Linux legal header in addition to standard acpica 1435header. 1436 1437---------------------------------------- 1438 143929 July 2008. Summary of changes for version 20080729: 1440 14411) ACPI CA Core Subsystem: 1442 1443Fix a possible deadlock in the GPE dispatch. Remove call to 1444AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1445to acquire the GPE lock but can deadlock since the GPE lock is already held 1446at dispatch time. This code was introduced in version 20060831 as a response 1447to Linux BZ 6881 and has since been removed from Linux. 1448 1449Add a function to dereference returned reference objects. Examines the return 1450object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1451automatically dereferenced in an attempt to return something useful (these 1452reference types cannot be converted into an external ACPI_OBJECT.) Provides 1453MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1454 1455x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1456subtables for the MADT and one new subtable for the SRAT. Includes 1457disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1458Specification, June 2008. 1459 1460Additional error checking for pathname utilities. Add error check after all 1461calls to AcpiNsGetPathnameLength. Add status return from 1462AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1463to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1464 1465Return status from the global init function AcpiUtGlobalInitialize. This is 1466used by both the kernel subsystem and the utilities such as iASL compiler. 1467The function could possibly fail when the caches are initialized. Yang Yi. 1468 1469Add a function to decode reference object types to strings. Created for 1470improved error messages. 1471 1472Improve object conversion error messages. Better error messages during object 1473conversion from internal to the external ACPI_OBJECT. Used for external calls 1474to AcpiEvaluateObject. 1475 1476Example Code and Data Size: These are the sizes for the OS-independent 1477acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1478debug version of the code includes the debug output trace mechanism and has a 1479much larger code and data size. 1480 1481 Previous Release: 1482 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1483 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1484 Current Release: 1485 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1486 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1487 14882) iASL Compiler/Disassembler and Tools: 1489 1490Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1491introduced in version 20080701. If the object being evaluated (via execute 1492command) is not a method, the debugger can hang while trying to obtain non- 1493existent parameters. 1494 1495iASL: relax error for using reserved "_T_x" identifiers. These names can 1496appear in a disassembled ASL file if they were emitted by the original 1497compiler. Instead of issuing an error or warning and forcing the user to 1498manually change these names, issue a remark instead. 1499 1500iASL: error if named object created in while loop. Emit an error if any named 1501object is created within a While loop. If allowed, this code will generate a 1502run-time error on the second iteration of the loop when an attempt is made to 1503create the same named object twice. ACPICA bugzilla 730. 1504 1505iASL: Support absolute pathnames for include files. Add support for absolute 1506pathnames within the Include operator. previously, only relative pathnames 1507were supported. 1508 1509iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1510The ACPI spec requires one interrupt minimum. BZ 423 1511 1512iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1513Handles the case for the Interrupt Resource Descriptor where 1514the ResourceSource argument is omitted but ResourceSourceIndex 1515is present. Now leave room for the Index. BZ 426 1516 1517iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1518where an error message is emitted if the target does not exist. BZ 516 1519 1520iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1521(get ACPI tables on Windows). This was apparently broken in version 20070919. 1522 1523AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1524the EOF happens immediately after the last table in the input file. Print 1525completion message. Previously, no message was displayed in this case. 1526 1527---------------------------------------- 152801 July 2008. Summary of changes for version 20080701: 1529 15300) Git source tree / acpica.org 1531 1532Fixed a problem where a git-clone from http would not transfer the entire 1533source tree. 1534 15351) ACPI CA Core Subsystem: 1536 1537Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1538enable bit. Now performs a read-change-write of the enable register instead 1539of simply writing out the cached enable mask. This will prevent inadvertent 1540enabling of GPEs if a rogue GPE is received during initialization (before GPE 1541handlers are installed.) 1542 1543Implemented a copy for dynamically loaded tables. Previously, dynamically 1544loaded tables were simply mapped - but on some machines this memory is 1545corrupted after suspend. Now copy the table to a local buffer. For the 1546OpRegion case, added checksum verify. Use the table length from the table 1547header, not the region length. For the Buffer case, use the table length 1548also. Dennis Noordsij, Bob Moore. BZ 10734 1549 1550Fixed a problem where the same ACPI table could not be dynamically loaded and 1551unloaded more than once. Without this change, a table cannot be loaded again 1552once it has been loaded/unloaded one time. The current mechanism does not 1553unregister a table upon an unload. During a load, if the same table is found, 1554this no longer returns an exception. BZ 722 1555 1556Fixed a problem where the wrong descriptor length was calculated for the 1557EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1558are calculated as 12 bytes long, but the actual length in the internal 1559descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1560by Linn Crosetto. BZ 728 1561 1562Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1563by Load() did not have its reference count decremented during unload, leading 1564to a memory leak. Lin Ming. BZ 727 1565 1566Fixed a possible memory leak when deleting thermal/processor objects. Any 1567associated notify handlers (and objects) were not being deleted. Fiodor 1568Suietov. BZ 506 1569 1570Fixed the ordering of the ASCII names in the global mutex table to match the 1571actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1572Vegard Nossum. BZ 726 1573 1574Enhanced the AcpiGetObjectInfo interface to return the number of required 1575arguments if the object is a control method. Added this call to the debugger 1576so the proper number of default arguments are passed to a method. This 1577prevents a warning when executing methods from AcpiExec. 1578 1579Added a check for an invalid handle in AcpiGetObjectInfo. Return 1580AE_BAD_PARAMETER if input handle is invalid. BZ 474 1581 1582Fixed an extraneous warning from exconfig.c on the 64-bit build. 1583 1584Example Code and Data Size: These are the sizes for the OS-independent 1585acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1586debug version of the code includes the debug output trace mechanism and has a 1587much larger code and data size. 1588 1589 Previous Release: 1590 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1591 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1592 Current Release: 1593 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1594 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1595 15962) iASL Compiler/Disassembler and Tools: 1597 1598iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1599resource descriptor names. 1600 1601iASL: Detect invalid ASCII characters in input (windows version). Removed the 1602"-CF" flag from the flex compile, enables correct detection of non-ASCII 1603characters in the input. BZ 441 1604 1605iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1606"result of operation not used" warning when the DDB handle returned from 1607LoadTable is not used. The warning is not needed. BZ 590 1608 1609AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1610pass address of table to the AML. Added option to disable OpRegion simulation 1611to allow creation of an OpRegion with a real address that was passed to _CFG. 1612All of this allows testing of the Load and Unload operators from AcpiExec. 1613 1614Debugger: update tables command for unloaded tables. Handle unloaded tables 1615and use the standard table header output routine. 1616 1617---------------------------------------- 161809 June 2008. Summary of changes for version 20080609: 1619 16201) ACPI CA Core Subsystem: 1621 1622Implemented a workaround for reversed _PRT entries. A significant number of 1623BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1624change dynamically detects and repairs this problem. Provides compatibility 1625with MS ACPI. BZ 6859 1626 1627Simplified the internal ACPI hardware interfaces to eliminate the locking 1628flag parameter from Register Read/Write. Added a new external interface, 1629AcpiGetRegisterUnlocked. 1630 1631Fixed a problem where the invocation of a GPE control method could hang. This 1632was a regression introduced in 20080514. The new method argument count 1633validation mechanism can enter an infinite loop when a GPE method is 1634dispatched. Problem fixed by removing the obsolete code that passed GPE block 1635information to the notify handler via the control method parameter pointer. 1636 1637Fixed a problem where the _SST execution status was incorrectly returned to 1638the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 163920080514. _SST is optional and a NOT_FOUND exception should never be 1640returned. BZ 716 1641 1642Fixed a problem where a deleted object could be accessed from within the AML 1643parser. This was a regression introduced in version 20080123 as a fix for the 1644Unload operator. Lin Ming. BZ 10669 1645 1646Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1647and eliminated the use of a negative index in a loop. Operands are now 1648displayed in the correct order, not backwards. This also fixes a regression 1649introduced in 20080514 on 64-bit systems where the elimination of 1650ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1651 1652Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1653path did not delete a locally allocated structure. 1654 1655Updated definitions for the DMAR and SRAT tables to synchronize with the 1656current specifications. Includes disassembler support. 1657 1658Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1659loop termination value was used. Loop terminated on iteration early, missing 1660one mutex. Linn Crosetto 1661 1662Example Code and Data Size: These are the sizes for the OS-independent 1663acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1664debug version of the code includes the debug output trace mechanism and has a 1665much larger code and data size. 1666 1667 Previous Release: 1668 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1669 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1670 Current Release: 1671 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1672 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1673 16742) iASL Compiler/Disassembler and Tools: 1675 1676Disassembler: Implemented support for EisaId() within _CID objects. Now 1677disassemble integer _CID objects back to EisaId invocations, including 1678multiple integers within _CID packages. Includes single-step support for 1679debugger also. 1680 1681Disassembler: Added support for DMAR and SRAT table definition changes. 1682 1683---------------------------------------- 168414 May 2008. Summary of changes for version 20080514: 1685 16861) ACPI CA Core Subsystem: 1687 1688Fixed a problem where GPEs were enabled too early during the ACPICA 1689initialization. This could lead to "handler not installed" errors on some 1690machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1691ensures that all operation regions and devices throughout the namespace have 1692been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1693 1694Implemented a change to the enter sleep code. Moved execution of the _GTS 1695method to just before setting sleep enable bit. The execution was moved from 1696AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1697immediately before the SLP_EN bit is set, as per the ACPI specification. 1698Luming Yu, BZ 1653. 1699 1700Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1701the GPE, even if ACPICA thinks that that it is already disabled. It is 1702possible that the AML or some other code has enabled the GPE unbeknownst to 1703the ACPICA code. 1704 1705Fixed a problem with the Field operator where zero-length fields would return 1706an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1707field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1708 1709Implemented a fix for the Load operator, now load the table at the namespace 1710root. This reverts a change introduced in version 20071019. The table is now 1711loaded at the namespace root even though this goes against the ACPI 1712specification. This provides compatibility with other ACPI implementations. 1713The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1714 1715Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1716Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1717acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1718Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1719signatures, ACPICA must be compatible. BZ 10454. 1720 1721Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1722fields to the exception string arrays to eliminate a -1 subtraction on the 1723SubStatus field. 1724 1725Updated the debug tracking macros to reduce overall code and data size. 1726Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1727instead of pointers to static strings. Jan Beulich and Bob Moore. 1728 1729Implemented argument count checking in control method invocation via 1730AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1731many. This applies only to extern programmatic control method execution, not 1732method-to-method calls within the AML. Lin Ming. 1733 1734Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1735longer needed, especially with the removal of 16-bit support. It was replaced 1736mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 173732/64-bit platforms is required. 1738 1739Added the C const qualifier for appropriate string constants -- mostly 1740MODULE_NAME and printf format strings. Jan Beulich. 1741 1742Example Code and Data Size: These are the sizes for the OS-independent 1743acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1744debug version of the code includes the debug output trace mechanism and has a 1745much larger code and data size. 1746 1747 Previous Release: 1748 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1749 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1750 Current Release: 1751 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1752 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1753 17542) iASL Compiler/Disassembler and Tools: 1755 1756Implemented ACPI table revision ID validation in the disassembler. Zero is 1757always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1758means 32-bit and this is unusual. 2 or greater is 64-bit. 1759 1760---------------------------------------- 176121 March 2008. Summary of changes for version 20080321: 1762 17631) ACPI CA Core Subsystem: 1764 1765Implemented an additional change to the GPE support in order to suppress 1766spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1767disable incoming GPEs that are neither enabled nor disabled -- meaning that 1768the GPE is unknown to the system. This should prevent future interrupt floods 1769from that GPE. BZ 6217 (Zhang Rui) 1770 1771Fixed a problem where NULL package elements were not returned to the 1772AcpiEvaluateObject interface correctly. The element was simply ignored 1773instead of returning a NULL ACPI_OBJECT package element, potentially causing 1774a buffer overflow and/or confusing the caller who expected a fixed number of 1775elements. BZ 10132 (Lin Ming, Bob Moore) 1776 1777Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1778Qword), Field, BankField, and IndexField operators when invoked from inside 1779an executing control method. In this case, these operators created namespace 1780nodes that were incorrectly left marked as permanent nodes instead of 1781temporary nodes. This could cause a problem if there is race condition 1782between an exiting control method and a running namespace walk. (Reported by 1783Linn Crosetto) 1784 1785Fixed a problem where the CreateField and CreateXXXField operators would 1786incorrectly allow duplicate names (the name of the field) with no exception 1787generated. 1788 1789Implemented several changes for Notify handling. Added support for new Notify 1790values (ACPI 2.0+) and improved the Notify debug output. Notify on 1791PowerResource objects is no longer allowed, as per the ACPI specification. 1792(Bob Moore, Zhang Rui) 1793 1794All Reference Objects returned via the AcpiEvaluateObject interface are now 1795marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1796NULL objects - either NULL package elements or unresolved named references. 1797 1798Fixed a problem where an extraneous debug message was produced for package 1799objects (when debugging enabled). The message "Package List length larger 1800than NumElements count" is now produced in the correct case, and is now an 1801error message rather than a debug message. Added a debug message for the 1802opposite case, where NumElements is larger than the Package List (the package 1803will be padded out with NULL elements as per the ACPI spec.) 1804 1805Implemented several improvements for the output of the ASL "Debug" object to 1806clarify and keep all data for a given object on one output line. 1807 1808Fixed two size calculation issues with the variable-length Start Dependent 1809resource descriptor. 1810 1811Example Code and Data Size: These are the sizes for the OS-independent 1812acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1813debug version of the code includes the debug output trace mechanism and has 1814a much larger code and data size. 1815 1816 Previous Release: 1817 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1818 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1819 Current Release: 1820 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1821 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1822 18232) iASL Compiler/Disassembler and Tools: 1824 1825Fixed a problem with the use of the Switch operator where execution of the 1826containing method by multiple concurrent threads could cause an 1827AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1828actual Switch opcode, it must be simulated with local named temporary 1829variables and if/else pairs. The solution chosen was to mark any method that 1830uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1831 1832---------------------------------------- 183313 February 2008. Summary of changes for version 20080213: 1834 18351) ACPI CA Core Subsystem: 1836 1837Implemented another MS compatibility design change for GPE/Notify handling. 1838GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1839complete first. It is expected that the OSL will queue the enable request 1840behind all pending notify requests (may require changes to the local host OSL 1841in AcpiOsExecute). Alexey Starikovskiy. 1842 1843Fixed a problem where buffer and package objects passed as arguments to a 1844control method via the external AcpiEvaluateObject interface could cause an 1845AE_AML_INTERNAL exception depending on the order and type of operators 1846executed by the target control method. 1847 1848Fixed a problem where resource descriptor size optimization could cause a 1849problem when a _CRS resource template is passed to a _SRS method. The _SRS 1850resource template must use the same descriptors (with the same size) as 1851returned from _CRS. This change affects the following resource descriptors: 1852IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1853 1854Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1855objects did not perform an implicit conversion as it should. These types must 1856retain their initial type permanently as per the ACPI specification. However, 1857a CopyObject to all other object types should not perform an implicit 1858conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1859 1860Fixed a problem with the AcpiGetDevices interface where the mechanism to 1861match device CIDs did not examine the entire list of available CIDs, but 1862instead aborted on the first non-matching CID. Andrew Patterson. 1863 1864Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1865inadvertently changed to return a 16-bit value instead of a 32-bit value, 1866truncating the upper dword of a 64-bit value. This macro is only used to 1867display debug output, so no incorrect calculations were made. Also, 1868reimplemented the macro so that a 64-bit shift is not performed by 1869inefficient compilers. 1870 1871Added missing va_end statements that should correspond with each va_start 1872statement. 1873 1874Example Code and Data Size: These are the sizes for the OS-independent 1875acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1876debug version of the code includes the debug output trace mechanism and has 1877a much larger code and data size. 1878 1879 Previous Release: 1880 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1881 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1882 Current Release: 1883 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1884 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1885 18862) iASL Compiler/Disassembler and Tools: 1887 1888Implemented full disassembler support for the following new ACPI tables: 1889BERT, EINJ, and ERST. Implemented partial disassembler support for the 1890complicated HEST table. These tables support the Windows Hardware Error 1891Architecture (WHEA). 1892 1893---------------------------------------- 189423 January 2008. Summary of changes for version 20080123: 1895 18961) ACPI CA Core Subsystem: 1897 1898Added the 2008 copyright to all module headers and signons. This affects 1899virtually every file in the ACPICA core subsystem, the iASL compiler, and 1900the tools/utilities. 1901 1902Fixed a problem with the SizeOf operator when used with Package and Buffer 1903objects. These objects have deferred execution for some arguments, and the 1904execution is now completed before the SizeOf is executed. This problem caused 1905unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 19069558 1907 1908Implemented an enhancement to the interpreter "slack mode". In the absence of 1909an explicit return or an implicitly returned object from the last executed 1910opcode, a control method will now implicitly return an integer of value 0 for 1911Microsoft compatibility. (Lin Ming) BZ 392 1912 1913Fixed a problem with the Load operator where an exception was not returned in 1914the case where the table is already loaded. (Lin Ming) BZ 463 1915 1916Implemented support for the use of DDBHandles as an Indexed Reference, as per 1917the ACPI spec. (Lin Ming) BZ 486 1918 1919Implemented support for UserTerm (Method invocation) for the Unload operator 1920as per the ACPI spec. (Lin Ming) BZ 580 1921 1922Fixed a problem with the LoadTable operator where the OemId and OemTableId 1923input strings could cause unexpected failures if they were shorter than the 1924maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 1925 1926Implemented support for UserTerm (Method invocation) for the Unload operator 1927as per the ACPI spec. (Lin Ming) BZ 580 1928 1929Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 1930IBFT, UEFI, WDAT. Disassembler support is forthcoming. 1931 1932Example Code and Data Size: These are the sizes for the OS-independent 1933acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1934debug version of the code includes the debug output trace mechanism and has 1935a much larger code and data size. 1936 1937 Previous Release: 1938 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1939 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1940 Current Release: 1941 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1942 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1943 19442) iASL Compiler/Disassembler and Tools: 1945 1946Implemented support in the disassembler for checksum validation on incoming 1947binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 1948header dump at the start of the disassembly. 1949 1950Implemented additional debugging information in the namespace listing file 1951created during compilation. In addition to the namespace hierarchy, the full 1952pathname to each namespace object is displayed. 1953 1954Fixed a problem with the disassembler where invalid ACPI tables could cause 1955faults or infinite loops. 1956 1957Fixed an unexpected parse error when using the optional "parameter types" 1958list in a control method declaration. (Lin Ming) BZ 397 1959 1960Fixed a problem where two External declarations with the same name did not 1961cause an error (Lin Ming) BZ 509 1962 1963Implemented support for full TermArgs (adding Argx, Localx and method 1964invocation) for the ParameterData parameter to the LoadTable operator. (Lin 1965Ming) BZ 583,587 1966 1967---------------------------------------- 196819 December 2007. Summary of changes for version 20071219: 1969 19701) ACPI CA Core Subsystem: 1971 1972Implemented full support for deferred execution for the TermArg string 1973arguments for DataTableRegion. This enables forward references and full 1974operand resolution for the three string arguments. Similar to OperationRegion 1975deferred argument execution.) Lin Ming. BZ 430 1976 1977Implemented full argument resolution support for the BankValue argument to 1978BankField. Previously, only constants were supported, now any TermArg may be 1979used. Lin Ming BZ 387, 393 1980 1981Fixed a problem with AcpiGetDevices where the search of a branch of the 1982device tree could be terminated prematurely. In accordance with the ACPI 1983specification, the search down the current branch is terminated if a device 1984is both not present and not functional (instead of just not present.) Yakui 1985Zhao. 1986 1987Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 1988the underlying AML code changed the GPE enable registers. Now, any unknown 1989incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 1990instead of simply ignored. Rui Zhang. 1991 1992Fixed a problem with Index Fields where the Index register was incorrectly 1993limited to a maximum of 32 bits. Now any size may be used. 1994 1995Fixed a couple memory leaks associated with "implicit return" objects when 1996the AML Interpreter slack mode is enabled. Lin Ming BZ 349 1997 1998Example Code and Data Size: These are the sizes for the OS-independent 1999acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2000debug version of the code includes the debug output trace mechanism and has 2001a much larger code and data size. 2002 2003 Previous Release: 2004 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2005 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2006 Current Release: 2007 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2008 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2009 2010---------------------------------------- 201114 November 2007. Summary of changes for version 20071114: 2012 20131) ACPI CA Core Subsystem: 2014 2015Implemented event counters for each of the Fixed Events, the ACPI SCI 2016(interrupt) itself, and control methods executed. Named 2017AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2018should be useful for debugging and statistics. 2019 2020Implemented a new external interface, AcpiGetStatistics, to retrieve the 2021contents of the various event counters. Returns the current values for 2022AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2023AcpiMethodCount. The interface can be expanded in the future if new counters 2024are added. Device drivers should use this interface rather than access the 2025counters directly. 2026 2027Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2028the ShortDivide function worked incorrectly, causing problems with the BCD 2029functions with large input values. A truncation from 64-bit to 32-bit 2030inadvertently occurred. Internal BZ 435. Lin Ming 2031 2032Fixed a problem with Index references passed as method arguments. References 2033passed as arguments to control methods were dereferenced immediately (before 2034control was passed to the called method). The references are now correctly 2035passed directly to the called method. BZ 5389. Lin Ming 2036 2037Fixed a problem with CopyObject used in conjunction with the Index operator. 2038The reference was incorrectly dereferenced before the copy. The reference is 2039now correctly copied. BZ 5391. Lin Ming 2040 2041Fixed a problem with Control Method references within Package objects. These 2042references are now correctly generated. This completes the package 2043construction overhaul that began in version 20071019. 2044 2045Example Code and Data Size: These are the sizes for the OS-independent 2046acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2047debug version of the code includes the debug output trace mechanism and has 2048a much larger code and data size. 2049 2050 Previous Release: 2051 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2052 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2053 Current Release: 2054 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2055 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2056 2057 20582) iASL Compiler/Disassembler and Tools: 2059 2060The AcpiExec utility now installs handlers for all of the predefined 2061Operation Region types. New types supported are: PCI_Config, CMOS, and 2062PCIBARTarget. 2063 2064Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2065bit) address fields for the DSDT and FACS within the FADT were not being 2066used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2067and Bob Moore 2068 2069---------------------------------------- 207019 October 2007. Summary of changes for version 20071019: 2071 20721) ACPI CA Core Subsystem: 2073 2074Fixed a problem with the Alias operator when the target of the alias is a 2075named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2076Processor, and ThermalZone. In these cases, any children of the original 2077operator could not be accessed via the alias, potentially causing unexpected 2078AE_NOT_FOUND exceptions. (BZ 9067) 2079 2080Fixed a problem with the Package operator where all named references were 2081created as object references and left otherwise unresolved. According to the 2082ACPI specification, a Package can only contain Data Objects or references to 2083control methods. The implication is that named references to Data Objects 2084(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2085immediately upon package creation. This is the approach taken with this 2086change. References to all other named objects (Methods, Devices, Scopes, 2087etc.) are all now properly created as reference objects. (BZ 5328) 2088 2089Reverted a change to Notify handling that was introduced in version 209020070508. This version changed the Notify handling from asynchronous to 2091fully synchronous (Device driver Notify handling with respect to the Notify 2092ASL operator). It was found that this change caused more problems than it 2093solved and was removed by most users. 2094 2095Fixed a problem with the Increment and Decrement operators where the type of 2096the target object could be unexpectedly and incorrectly changed. (BZ 353) 2097Lin Ming. 2098 2099Fixed a problem with the Load and LoadTable operators where the table 2100location within the namespace was ignored. Instead, the table was always 2101loaded into the root or current scope. Lin Ming. 2102 2103Fixed a problem with the Load operator when loading a table from a buffer 2104object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2105 2106Fixed a problem with the Debug object where a store of a DdbHandle reference 2107object to the Debug object could cause a fault. 2108 2109Added a table checksum verification for the Load operator, in the case where 2110the load is from a buffer. (BZ 578). 2111 2112Implemented additional parameter validation for the LoadTable operator. The 2113length of the input strings SignatureString, OemIdString, and OemTableId are 2114now checked for maximum lengths. (BZ 582) Lin Ming. 2115 2116Example Code and Data Size: These are the sizes for the OS-independent 2117acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2118debug version of the code includes the debug output trace mechanism and has 2119a much larger code and data size. 2120 2121 Previous Release: 2122 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2123 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2124 Current Release: 2125 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2126 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2127 2128 21292) iASL Compiler/Disassembler: 2130 2131Fixed a problem where if a single file was specified and the file did not 2132exist, no error message was emitted. (Introduced with wildcard support in 2133version 20070917.) 2134 2135---------------------------------------- 213619 September 2007. Summary of changes for version 20070919: 2137 21381) ACPI CA Core Subsystem: 2139 2140Designed and implemented new external interfaces to install and remove 2141handlers for ACPI table-related events. Current events that are defined are 2142LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2143they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2144AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2145 2146Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2147(acpi_serialized option on Linux) could cause some systems to hang during 2148initialization. (Bob Moore) BZ 8171 2149 2150Fixed a problem where objects of certain types (Device, ThermalZone, 2151Processor, PowerResource) can be not found if they are declared and 2152referenced from within the same control method (Lin Ming) BZ 341 2153 2154Example Code and Data Size: These are the sizes for the OS-independent 2155acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2156debug version of the code includes the debug output trace mechanism and has 2157a much larger code and data size. 2158 2159 Previous Release: 2160 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2161 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2162 Current Release: 2163 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2164 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2165 2166 21672) iASL Compiler/Disassembler: 2168 2169Implemented support to allow multiple files to be compiled/disassembled in a 2170single invocation. This includes command line wildcard support for both the 2171Windows and Unix versions of the compiler. This feature simplifies the 2172disassembly and compilation of multiple ACPI tables in a single directory. 2173 2174---------------------------------------- 217508 May 2007. Summary of changes for version 20070508: 2176 21771) ACPI CA Core Subsystem: 2178 2179Implemented a Microsoft compatibility design change for the handling of the 2180Notify AML operator. Previously, notify handlers were dispatched and 2181executed completely asynchronously in a deferred thread. The new design 2182still executes the notify handlers in a different thread, but the original 2183thread that executed the Notify() now waits at a synchronization point for 2184the notify handler to complete. Some machines depend on a synchronous Notify 2185operator in order to operate correctly. 2186 2187Implemented support to allow Package objects to be passed as method 2188arguments to the external AcpiEvaluateObject interface. Previously, this 2189would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2190implemented since there were no reserved control methods that required it 2191until recently. 2192 2193Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2194contained invalid non-zero values in reserved fields could cause later 2195failures because these fields have meaning in later revisions of the FADT. 2196For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2197are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2198 2199Fixed a problem where the Global Lock handle was not properly updated if a 2200thread that acquired the Global Lock via executing AML code then attempted 2201to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2202Liu. 2203 2204Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2205could be corrupted if the interrupt being removed was at the head of the 2206list. Reported by Linn Crosetto. 2207 2208Example Code and Data Size: These are the sizes for the OS-independent 2209acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2210debug version of the code includes the debug output trace mechanism and has 2211a much larger code and data size. 2212 2213 Previous Release: 2214 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2215 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2216 Current Release: 2217 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2218 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2219 2220---------------------------------------- 222120 March 2007. Summary of changes for version 20070320: 2222 22231) ACPI CA Core Subsystem: 2224 2225Implemented a change to the order of interpretation and evaluation of AML 2226operand objects within the AML interpreter. The interpreter now evaluates 2227operands in the order that they appear in the AML stream (and the 2228corresponding ASL code), instead of in the reverse order (after the entire 2229operand list has been parsed). The previous behavior caused several subtle 2230incompatibilities with the Microsoft AML interpreter as well as being 2231somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2232 2233Implemented a change to the ACPI Global Lock support. All interfaces to the 2234global lock now allow the same thread to acquire the lock multiple times. 2235This affects the AcpiAcquireGlobalLock external interface to the global lock 2236as well as the internal use of the global lock to support AML fields -- a 2237control method that is holding the global lock can now simultaneously access 2238AML fields that require global lock protection. Previously, in both cases, 2239this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2240AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2241Controller. There is no change to the behavior of the AML Acquire operator, 2242as this can already be used to acquire a mutex multiple times by the same 2243thread. BZ 8066. With assistance from Alexey Starikovskiy. 2244 2245Fixed a problem where invalid objects could be referenced in the AML 2246Interpreter after error conditions. During operand evaluation, ensure that 2247the internal "Return Object" field is cleared on error and only valid 2248pointers are stored there. Caused occasional access to deleted objects that 2249resulted in "large reference count" warning messages. Valery Podrezov. 2250 2251Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2252deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2253Podrezov. 2254 2255Fixed an internal problem with the handling of result objects on the 2256interpreter result stack. BZ 7872. Valery Podrezov. 2257 2258Removed obsolete code that handled the case where AML_NAME_OP is the target 2259of a reference (Reference.Opcode). This code was no longer necessary. BZ 22607874. Valery Podrezov. 2261 2262Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2263remnant from the previously discontinued 16-bit support. 2264 2265Example Code and Data Size: These are the sizes for the OS-independent 2266acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2267debug version of the code includes the debug output trace mechanism and has 2268a much larger code and data size. 2269 2270 Previous Release: 2271 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2272 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2273 Current Release: 2274 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2275 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2276 2277---------------------------------------- 227826 January 2007. Summary of changes for version 20070126: 2279 22801) ACPI CA Core Subsystem: 2281 2282Added the 2007 copyright to all module headers and signons. This affects 2283virtually every file in the ACPICA core subsystem, the iASL compiler, and 2284the utilities. 2285 2286Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2287during a table load. A bad pointer was passed in the case where the DSDT is 2288overridden, causing a fault in this case. 2289 2290Example Code and Data Size: These are the sizes for the OS-independent 2291acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2292debug version of the code includes the debug output trace mechanism and has 2293a much larger code and data size. 2294 2295 Previous Release: 2296 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2297 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2298 Current Release: 2299 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2300 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2301 2302---------------------------------------- 230315 December 2006. Summary of changes for version 20061215: 2304 23051) ACPI CA Core Subsystem: 2306 2307Support for 16-bit ACPICA has been completely removed since it is no longer 2308necessary and it clutters the code. All 16-bit macros, types, and 2309conditional compiles have been removed, cleaning up and simplifying the code 2310across the entire subsystem. DOS support is no longer needed since the 2311bootable Linux firmware kit is now available. 2312 2313The handler for the Global Lock is now removed during AcpiTerminate to 2314enable a clean subsystem restart, via the implementation of the 2315AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2316HP) 2317 2318Implemented enhancements to the multithreading support within the debugger 2319to enable improved multithreading debugging and evaluation of the subsystem. 2320(Valery Podrezov) 2321 2322Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2323memory used during the execution, as well as the maximum memory consumed by 2324each of the various object types. (Valery Podrezov) 2325 2326Example Code and Data Size: These are the sizes for the OS-independent 2327acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2328debug version of the code includes the debug output trace mechanism and has 2329a much larger code and data size. 2330 2331 Previous Release: 2332 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2333 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2334 Current Release: 2335 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2336 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2337 2338 23392) iASL Compiler/Disassembler and Tools: 2340 2341AcpiExec: Implemented a new option (-m) to display full memory use 2342statistics upon subsystem/program termination. (Valery Podrezov) 2343 2344---------------------------------------- 234509 November 2006. Summary of changes for version 20061109: 2346 23471) ACPI CA Core Subsystem: 2348 2349Optimized the Load ASL operator in the case where the source operand is an 2350operation region. Simply map the operation region memory, instead of 2351performing a bytewise read. (Region must be of type SystemMemory, see 2352below.) 2353 2354Fixed the Load ASL operator for the case where the source operand is a 2355region field. A buffer object is also allowed as the source operand. BZ 480 2356 2357Fixed a problem where the Load ASL operator allowed the source operand to be 2358an operation region of any type. It is now restricted to regions of type 2359SystemMemory, as per the ACPI specification. BZ 481 2360 2361Additional cleanup and optimizations for the new Table Manager code. 2362 2363AcpiEnable will now fail if all of the required ACPI tables are not loaded 2364(FADT, FACS, DSDT). BZ 477 2365 2366Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2367header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2368manually optimized to be aligned and will not work if it is byte-packed. 2369 2370Example Code and Data Size: These are the sizes for the OS-independent 2371acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2372debug version of the code includes the debug output trace mechanism and has 2373a much larger code and data size. 2374 2375 Previous Release: 2376 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2377 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2378 Current Release: 2379 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2380 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2381 2382 23832) iASL Compiler/Disassembler and Tools: 2384 2385Fixed a problem where the presence of the _OSI predefined control method 2386within complex expressions could cause an internal compiler error. 2387 2388AcpiExec: Implemented full region support for multiple address spaces. 2389SpaceId is now part of the REGION object. BZ 429 2390 2391---------------------------------------- 239211 October 2006. Summary of changes for version 20061011: 2393 23941) ACPI CA Core Subsystem: 2395 2396Completed an AML interpreter performance enhancement for control method 2397execution. Previously a 2-pass parse/execution, control methods are now 2398completely parsed and executed in a single pass. This improves overall 2399interpreter performance by ~25%, reduces code size, and reduces CPU stack 2400use. (Valery Podrezov + interpreter changes in version 20051202 that 2401eliminated namespace loading during the pass one parse.) 2402 2403Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2404match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2405obtained and also checked for an ID match. 2406 2407Implemented additional support for the PCI _ADR execution: upsearch until a 2408device scope is found before executing _ADR. This allows PCI_Config 2409operation regions to be declared locally within control methods underneath 2410PCI device objects. 2411 2412Fixed a problem with a possible race condition between threads executing 2413AcpiWalkNamespace and the AML interpreter. This condition was removed by 2414modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2415entries created during any concurrent control method execution. An 2416additional namespace race condition is known to exist between 2417AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2418investigation. 2419 2420Restructured the AML ParseLoop function, breaking it into several 2421subfunctions in order to reduce CPU stack use and improve maintainability. 2422(Mikhail Kouzmich) 2423 2424AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2425of prefix handle and pathname. BZ 478 2426 2427Example Code and Data Size: These are the sizes for the OS-independent 2428acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2429debug version of the code includes the debug output trace mechanism and has 2430a much larger code and data size. 2431 2432 Previous Release: 2433 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2434 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2435 Current Release: 2436 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2437 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2438 24392) iASL Compiler/Disassembler and Tools: 2440 2441Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2442to restore original behavior. 2443 2444---------------------------------------- 244527 September 2006. Summary of changes for version 20060927: 2446 24471) ACPI CA Core Subsystem: 2448 2449Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2450These functions now use a spinlock for mutual exclusion and the interrupt 2451level indication flag is not needed. 2452 2453Fixed a problem with the Global Lock where the lock could appear to be 2454obtained before it is actually obtained. The global lock semaphore was 2455inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2456Suietov. 2457 2458Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2459a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2460 2461Example Code and Data Size: These are the sizes for the OS-independent 2462acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2463debug version of the code includes the debug output trace mechanism and has 2464a much larger code and data size. 2465 2466 Previous Release: 2467 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2468 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2469 Current Release: 2470 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2471 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2472 2473 24742) iASL Compiler/Disassembler and Tools: 2475 2476Fixed a compilation problem with the pre-defined Resource Descriptor field 2477names where an "object does not exist" error could be incorrectly generated 2478if the parent ResourceTemplate pathname places the template within a 2479different namespace scope than the current scope. (BZ 7212) 2480 2481Fixed a problem where the compiler could hang after syntax errors detected 2482in an ElseIf construct. (BZ 453) 2483 2484Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2485operator. An incorrect output filename was produced when this parameter was 2486a null string (""). Now, the original input filename is used as the AML 2487output filename, with an ".aml" extension. 2488 2489Implemented a generic batch command mode for the AcpiExec utility (execute 2490any AML debugger command) (Valery Podrezov). 2491 2492---------------------------------------- 249312 September 2006. Summary of changes for version 20060912: 2494 24951) ACPI CA Core Subsystem: 2496 2497Enhanced the implementation of the "serialized mode" of the interpreter 2498(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2499specified, instead of creating a serialization semaphore per control method, 2500the interpreter lock is simply no longer released before a blocking 2501operation during control method execution. This effectively makes the AML 2502Interpreter single-threaded. The overhead of a semaphore per-method is 2503eliminated. 2504 2505Fixed a regression where an error was no longer emitted if a control method 2506attempts to create 2 objects of the same name. This once again returns 2507AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2508will dynamically serialize the control method to possible prevent future 2509errors. (BZ 440) 2510 2511Integrated a fix for a problem with PCI Express HID detection in the PCI 2512Config Space setup procedure. (BZ 7145) 2513 2514Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2515AcpiHwInitialize function - the FADT registers are now validated when the 2516table is loaded. 2517 2518Added two new warnings during FADT verification - 1) if the FADT is larger 2519than the largest known FADT version, and 2) if there is a mismatch between a 252032-bit block address and the 64-bit X counterpart (when both are non-zero.) 2521 2522Example Code and Data Size: These are the sizes for the OS-independent 2523acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2524debug version of the code includes the debug output trace mechanism and has 2525a much larger code and data size. 2526 2527 Previous Release: 2528 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2529 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2530 Current Release: 2531 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2532 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2533 2534 25352) iASL Compiler/Disassembler and Tools: 2536 2537Fixed a problem with the implementation of the Switch() operator where the 2538temporary variable was declared too close to the actual Switch, instead of 2539at method level. This could cause a problem if the Switch() operator is 2540within a while loop, causing an error on the second iteration. (BZ 460) 2541 2542Disassembler - fix for error emitted for unknown type for target of scope 2543operator. Now, ignore it and continue. 2544 2545Disassembly of an FADT now verifies the input FADT and reports any errors 2546found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2547 2548Disassembly of raw data buffers with byte initialization data now prefixes 2549each output line with the current buffer offset. 2550 2551Disassembly of ASF! table now includes all variable-length data fields at 2552the end of some of the subtables. 2553 2554The disassembler now emits a comment if a buffer appears to be a 2555ResourceTemplate, but cannot be disassembled as such because the EndTag does 2556not appear at the very end of the buffer. 2557 2558AcpiExec - Added the "-t" command line option to enable the serialized mode 2559of the AML interpreter. 2560 2561---------------------------------------- 256231 August 2006. Summary of changes for version 20060831: 2563 25641) ACPI CA Core Subsystem: 2565 2566Miscellaneous fixes for the Table Manager: 2567- Correctly initialize internal common FADT for all 64-bit "X" fields 2568- Fixed a couple table mapping issues during table load 2569- Fixed a couple alignment issues for IA64 2570- Initialize input array to zero in AcpiInitializeTables 2571- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2572AcpiGetTableByIndex 2573 2574Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2575immediately disabled to prevent the waking GPE from firing again and to 2576prevent other wake GPEs from interrupting the wake process. 2577 2578Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2579be used for debugging systems with a large number of ACPI interrupts. 2580 2581Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2582both the ACPICA headers and the disassembler. 2583 2584Example Code and Data Size: These are the sizes for the OS-independent 2585acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2586debug version of the code includes the debug output trace mechanism and has 2587a much larger code and data size. 2588 2589 Previous Release: 2590 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2591 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2592 Current Release: 2593 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2594 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2595 2596 25972) iASL Compiler/Disassembler and Tools: 2598 2599Disassembler support for the DMAR ACPI table. 2600 2601---------------------------------------- 260223 August 2006. Summary of changes for version 20060823: 2603 26041) ACPI CA Core Subsystem: 2605 2606The Table Manager component has been completely redesigned and 2607reimplemented. The new design is much simpler, and reduces the overall code 2608and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2609now possible to obtain the ACPI tables very early during kernel 2610initialization, even before dynamic memory management is initialized. 2611(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2612 2613Obsolete ACPICA interfaces: 2614 2615- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2616time). 2617- AcpiLoadTable: Not needed. 2618- AcpiUnloadTable: Not needed. 2619 2620New ACPICA interfaces: 2621 2622- AcpiInitializeTables: Must be called before the table manager can be used. 2623- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2624allocated memory after it becomes available. 2625- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2626in the RSDT/XSDT. 2627 2628Other ACPICA changes: 2629 2630- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2631AcpiOsUnmapMemory to free this mapping. 2632- AcpiGetTable returns the actual mapped table. The mapping is managed 2633internally and must not be deleted by the caller. Use of this interface 2634causes no additional dynamic memory allocation. 2635- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2636it appeared to be unused. 2637- The interface to AcpiOsMapMemory has changed to be consistent with the 2638other allocation interfaces. 2639- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2640parameters. 2641- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2642bit platforms. Was previously 64 bits on all platforms. 2643- The interface to the ACPI Global Lock acquire/release macros have changed 2644slightly since ACPICA no longer keeps a local copy of the FACS with a 2645constructed pointer to the actual global lock. 2646 2647Porting to the new table manager: 2648 2649- AcpiInitializeTables: Must be called once, and can be called anytime 2650during the OS initialization process. It allows the host to specify an area 2651of memory to be used to store the internal version of the RSDT/XSDT (root 2652table). This allows the host to access ACPI tables before memory management 2653is initialized and running. 2654- AcpiReallocateRootTable: Can be called after memory management is running 2655to copy the root table to a dynamically allocated array, freeing up the 2656scratch memory specified in the call to AcpiInitializeTables. 2657- AcpiSubsystemInitialize: This existing interface is independent of the 2658Table Manager, and does not have to be called before the Table Manager can 2659be used, it only must be called before the rest of ACPICA can be used. 2660- ACPI Tables: Some changes have been made to the names and structure of the 2661actbl.h and actbl1.h header files and may require changes to existing code. 2662For example, bitfields have been completely removed because of their lack of 2663portability across C compilers. 2664- Update interfaces to the Global Lock acquire/release macros if local 2665versions are used. (see acwin.h) 2666 2667Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2668 2669New files: tbfind.c 2670 2671Example Code and Data Size: These are the sizes for the OS-independent 2672acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2673debug version of the code includes the debug output trace mechanism and has 2674a much larger code and data size. 2675 2676 Previous Release: 2677 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2678 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2679 Current Release: 2680 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2681 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2682 2683 26842) iASL Compiler/Disassembler and Tools: 2685 2686No changes for this release. 2687 2688---------------------------------------- 268921 July 2006. Summary of changes for version 20060721: 2690 26911) ACPI CA Core Subsystem: 2692 2693The full source code for the ASL test suite used to validate the iASL 2694compiler and the ACPICA core subsystem is being released with the ACPICA 2695source for the first time. The source is contained in a separate package and 2696consists of over 1100 files that exercise all ASL/AML operators. The package 2697should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2698Suietov) 2699 2700Completed a new design and implementation for support of the ACPI Global 2701Lock. On the OS side, the global lock is now treated as a standard AML 2702mutex. Previously, multiple OS threads could "acquire" the global lock 2703simultaneously. However, this could cause the BIOS to be starved out of the 2704lock - especially in cases such as the Embedded Controller driver where 2705there is a tight coupling between the OS and the BIOS. 2706 2707Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2708The Global Lock interrupt handler no longer queues the execution of a 2709separate thread to signal the global lock semaphore. Instead, the semaphore 2710is signaled directly from the interrupt handler. 2711 2712Implemented support within the AML interpreter for package objects that 2713contain a larger AML length (package list length) than the package element 2714count. In this case, the length of the package is truncated to match the 2715package element count. Some BIOS code apparently modifies the package length 2716on the fly, and this change supports this behavior. Provides compatibility 2717with the MS AML interpreter. (With assistance from Fiodor Suietov) 2718 2719Implemented a temporary fix for the BankValue parameter of a Bank Field to 2720support all constant values, now including the Zero and One opcodes. 2721Evaluation of this parameter must eventually be converted to a full TermArg 2722evaluation. A not-implemented error is now returned (temporarily) for non- 2723constant values for this parameter. 2724 2725Fixed problem reports (Fiodor Suietov) integrated: 2726- Fix for premature object deletion after CopyObject on Operation Region (BZ 2727350) 2728 2729Example Code and Data Size: These are the sizes for the OS-independent 2730acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2731debug version of the code includes the debug output trace mechanism and has 2732a much larger code and data size. 2733 2734 Previous Release: 2735 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2736 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2737 Current Release: 2738 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2739 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2740 2741 27422) iASL Compiler/Disassembler and Tools: 2743 2744No changes for this release. 2745 2746---------------------------------------- 274707 July 2006. Summary of changes for version 20060707: 2748 27491) ACPI CA Core Subsystem: 2750 2751Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2752that do not allow the initialization of address pointers within packed 2753structures - even though the hardware itself may support misaligned 2754transfers. Some of the debug data structures are packed by default to 2755minimize size. 2756 2757Added an error message for the case where AcpiOsGetThreadId() returns zero. 2758A non-zero value is required by the core ACPICA code to ensure the proper 2759operation of AML mutexes and recursive control methods. 2760 2761The DSDT is now the only ACPI table that determines whether the AML 2762interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2763the hooks for per-table 32/64 switching have been removed from the code. A 2764clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2765 2766Fixed a possible leak of an OwnerID in the error path of 2767AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2768deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2769when using the AcpiTbDeleteTablesByType interface (with assistance from 2770Lance Ortiz.) 2771 2772Fixed a problem with Serialized control methods where the semaphore 2773associated with the method could be over-signaled after multiple method 2774invocations. 2775 2776Fixed two issues with the locking of the internal namespace data structure. 2777Both the Unload() operator and AcpiUnloadTable interface now lock the 2778namespace during the namespace deletion associated with the table unload 2779(with assistance from Linn Crosetto.) 2780 2781Fixed problem reports (Valery Podrezov) integrated: 2782- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2783 2784Fixed problem reports (Fiodor Suietov) integrated: 2785- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2786- On Address Space handler deletion, needless deactivation call (BZ 374) 2787- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2788- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2789(BZ 376) 2790- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2791- Minimum Length of RSDT should be validated (BZ 379) 2792- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2793Handler (BZ (380) 2794- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2795(BZ 381) 2796 2797Example Code and Data Size: These are the sizes for the OS-independent 2798acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2799debug version of the code includes the debug output trace mechanism and has 2800a much larger code and data size. 2801 2802 Previous Release: 2803 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2804 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2805 Current Release: 2806 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2807 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2808 2809 28102) iASL Compiler/Disassembler and Tools: 2811 2812Fixed problem reports: 2813Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2814436) 2815 2816---------------------------------------- 281723 June 2006. Summary of changes for version 20060623: 2818 28191) ACPI CA Core Subsystem: 2820 2821Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2822allows the type to be customized to the host OS for improved efficiency 2823(since a spinlock is usually a very small object.) 2824 2825Implemented support for "ignored" bits in the ACPI registers. According to 2826the ACPI specification, these bits should be preserved when writing the 2827registers via a read/modify/write cycle. There are 3 bits preserved in this 2828manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2829 2830Implemented the initial deployment of new OSL mutex interfaces. Since some 2831host operating systems have separate mutex and semaphore objects, this 2832feature was requested. The base code now uses mutexes (and the new mutex 2833interfaces) wherever a binary semaphore was used previously. However, for 2834the current release, the mutex interfaces are defined as macros to map them 2835to the existing semaphore interfaces. Therefore, no OSL changes are required 2836at this time. (See acpiosxf.h) 2837 2838Fixed several problems with the support for the control method SyncLevel 2839parameter. The SyncLevel now works according to the ACPI specification and 2840in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2841is a property of the executing thread. Mutual exclusion for control methods 2842is now implemented with a mutex instead of a semaphore. 2843 2844Fixed three instances of the use of the C shift operator in the bitfield 2845support code (exfldio.c) to avoid the use of a shift value larger than the 2846target data width. The behavior of C compilers is undefined in this case and 2847can cause unpredictable results, and therefore the case must be detected and 2848avoided. (Fiodor Suietov) 2849 2850Added an info message whenever an SSDT or OEM table is loaded dynamically 2851via the Load() or LoadTable() ASL operators. This should improve debugging 2852capability since it will show exactly what tables have been loaded (beyond 2853the tables present in the RSDT/XSDT.) 2854 2855Example Code and Data Size: These are the sizes for the OS-independent 2856acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2857debug version of the code includes the debug output trace mechanism and has 2858a much larger code and data size. 2859 2860 Previous Release: 2861 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2862 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2863 Current Release: 2864 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2865 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2866 2867 28682) iASL Compiler/Disassembler and Tools: 2869 2870No changes for this release. 2871 2872---------------------------------------- 287308 June 2006. Summary of changes for version 20060608: 2874 28751) ACPI CA Core Subsystem: 2876 2877Converted the locking mutex used for the ACPI hardware to a spinlock. This 2878change should eliminate all problems caused by attempting to acquire a 2879semaphore at interrupt level, and it means that all ACPICA external 2880interfaces that directly access the ACPI hardware can be safely called from 2881interrupt level. OSL code that implements the semaphore interfaces should be 2882able to eliminate any workarounds for being called at interrupt level. 2883 2884Fixed a regression introduced in 20060526 where the ACPI device 2885initialization could be prematurely aborted with an AE_NOT_FOUND if a device 2886did not have an optional _INI method. 2887 2888Fixed an IndexField issue where a write to the Data Register should be 2889limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 2890Fiodor Suietov) 2891 2892Fixed problem reports (Valery Podrezov) integrated: 2893- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 2894 2895Fixed problem reports (Fiodor Suietov) integrated: 2896- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 2897 2898Removed four global mutexes that were obsolete and were no longer being 2899used. 2900 2901Example Code and Data Size: These are the sizes for the OS-independent 2902acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2903debug version of the code includes the debug output trace mechanism and has 2904a much larger code and data size. 2905 2906 Previous Release: 2907 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2908 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2909 Current Release: 2910 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2911 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2912 2913 29142) iASL Compiler/Disassembler and Tools: 2915 2916Fixed a fault when using -g option (get tables from registry) on Windows 2917machines. 2918 2919Fixed problem reports integrated: 2920- Generate error if CreateField NumBits parameter is zero. (BZ 405) 2921- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 2922Suietov) 2923- Global table revision override (-r) is ignored (BZ 413) 2924 2925---------------------------------------- 292626 May 2006. Summary of changes for version 20060526: 2927 29281) ACPI CA Core Subsystem: 2929 2930Restructured, flattened, and simplified the internal interfaces for 2931namespace object evaluation - resulting in smaller code, less CPU stack use, 2932and fewer interfaces. (With assistance from Mikhail Kouzmich) 2933 2934Fixed a problem with the CopyObject operator where the first parameter was 2935not typed correctly for the parser, interpreter, compiler, and disassembler. 2936Caused various errors and unexpected behavior. 2937 2938Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 2939produced incorrect results with some C compilers. Since the behavior of C 2940compilers when the shift value is larger than the datatype width is 2941apparently not well defined, the interpreter now detects this condition and 2942simply returns zero as expected in all such cases. (BZ 395) 2943 2944Fixed problem reports (Valery Podrezov) integrated: 2945- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 2946- Allow interpreter to handle nested method declarations (BZ 5361) 2947 2948Fixed problem reports (Fiodor Suietov) integrated: 2949- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 2950- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 2951- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 2952- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 2953- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 2954- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 2955- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 2956- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 2957- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 2958- Status of the Global Initialization Handler call not used (BZ 366) 2959- Incorrect object parameter to Global Initialization Handler (BZ 367) 2960 2961Example Code and Data Size: These are the sizes for the OS-independent 2962acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2963debug version of the code includes the debug output trace mechanism and has 2964a much larger code and data size. 2965 2966 Previous Release: 2967 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2968 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2969 Current Release: 2970 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2971 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2972 2973 29742) iASL Compiler/Disassembler and Tools: 2975 2976Modified the parser to allow the names IO, DMA, and IRQ to be used as 2977namespace identifiers with no collision with existing resource descriptor 2978macro names. This provides compatibility with other ASL compilers and is 2979most useful for disassembly/recompilation of existing tables without parse 2980errors. (With assistance from Thomas Renninger) 2981 2982Disassembler: fixed an incorrect disassembly problem with the 2983DataTableRegion and CopyObject operators. Fixed a possible fault during 2984disassembly of some Alias operators. 2985 2986---------------------------------------- 298712 May 2006. Summary of changes for version 20060512: 2988 29891) ACPI CA Core Subsystem: 2990 2991Replaced the AcpiOsQueueForExecution interface with a new interface named 2992AcpiOsExecute. The major difference is that the new interface does not have 2993a Priority parameter, this appeared to be useless and has been replaced by a 2994Type parameter. The Type tells the host what type of execution is being 2995requested, such as global lock handler, notify handler, GPE handler, etc. 2996This allows the host to queue and execute the request as appropriate for the 2997request type, possibly using different work queues and different priorities 2998for the various request types. This enables fixes for multithreading 2999deadlock problems such as BZ #5534, and will require changes to all existing 3000OS interface layers. (Alexey Starikovskiy and Bob Moore) 3001 3002Fixed a possible memory leak associated with the support for the so-called 3003"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3004Suietov) 3005 3006Fixed a problem with the Load() operator where a table load from an 3007operation region could overwrite an internal table buffer by up to 7 bytes 3008and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3009 3010Example Code and Data Size: These are the sizes for the OS-independent 3011acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3012debug version of the code includes the debug output trace mechanism and has 3013a much larger code and data size. 3014 3015 Previous Release: 3016 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3017 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3018 Current Release: 3019 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3020 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3021 3022 3023 30242) iASL Compiler/Disassembler and Tools: 3025 3026Disassembler: Implemented support to cross reference the internal namespace 3027and automatically generate ASL External() statements for symbols not defined 3028within the current table being disassembled. This will simplify the 3029disassembly and recompilation of interdependent tables such as SSDTs since 3030these statements will no longer have to be added manually. 3031 3032Disassembler: Implemented experimental support to automatically detect 3033invocations of external control methods and generate appropriate External() 3034statements. This is problematic because the AML cannot be correctly parsed 3035until the number of arguments for each control method is known. Currently, 3036standalone method invocations and invocations as the source operand of a 3037Store() statement are supported. 3038 3039Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3040LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3041LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3042more readable and likely closer to the original ASL source. 3043 3044---------------------------------------- 304521 April 2006. Summary of changes for version 20060421: 3046 30471) ACPI CA Core Subsystem: 3048 3049Removed a device initialization optimization introduced in 20051216 where 3050the _STA method was not run unless an _INI was also present for the same 3051device. This optimization could cause problems because it could allow _INI 3052methods to be run within a not-present device subtree. (If a not-present 3053device had no _INI, _STA would not be run, the not-present status would not 3054be discovered, and the children of the device would be incorrectly 3055traversed.) 3056 3057Implemented a new _STA optimization where namespace subtrees that do not 3058contain _INI are identified and ignored during device initialization. 3059Selectively running _STA can significantly improve boot time on large 3060machines (with assistance from Len Brown.) 3061 3062Implemented support for the device initialization case where the returned 3063_STA flags indicate a device not-present but functioning. In this case, _INI 3064is not run, but the device children are examined for presence, as per the 3065ACPI specification. 3066 3067Implemented an additional change to the IndexField support in order to 3068conform to MS behavior. The value written to the Index Register is not 3069simply a byte offset, it is a byte offset in units of the access width of 3070the parent Index Field. (Fiodor Suietov) 3071 3072Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3073interface is called during the creation of all AML operation regions, and 3074allows the host OS to exert control over what addresses it will allow the 3075AML code to access. Operation Regions whose addresses are disallowed will 3076cause a runtime exception when they are actually accessed (will not affect 3077or abort table loading.) See oswinxf or osunixxf for an example 3078implementation. 3079 3080Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3081interface allows the host OS to match the various "optional" 3082interface/behavior strings for the _OSI predefined control method as 3083appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3084for an example implementation. 3085 3086Restructured and corrected various problems in the exception handling code 3087paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3088(with assistance from Takayoshi Kochi.) 3089 3090Modified the Linux source converter to ignore quoted string literals while 3091converting identifiers from mixed to lower case. This will correct problems 3092with the disassembler and other areas where such strings must not be 3093modified. 3094 3095The ACPI_FUNCTION_* macros no longer require quotes around the function 3096name. This allows the Linux source converter to convert the names, now that 3097the converter ignores quoted strings. 3098 3099Example Code and Data Size: These are the sizes for the OS-independent 3100acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3101debug version of the code includes the debug output trace mechanism and has 3102a much larger code and data size. 3103 3104 Previous Release: 3105 3106 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3107 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3108 Current Release: 3109 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3110 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3111 3112 31132) iASL Compiler/Disassembler and Tools: 3114 3115Implemented 3 new warnings for iASL, and implemented multiple warning levels 3116(w2 flag). 3117 31181) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3119WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3120check for the possible timeout, a warning is issued. 3121 31222) Useless operators: If an ASL operator does not specify an optional target 3123operand and it also does not use the function return value from the 3124operator, a warning is issued since the operator effectively does nothing. 3125 31263) Unreferenced objects: If a namespace object is created, but never 3127referenced, a warning is issued. This is a warning level 2 since there are 3128cases where this is ok, such as when a secondary table is loaded that uses 3129the unreferenced objects. Even so, care is taken to only flag objects that 3130don't look like they will ever be used. For example, the reserved methods 3131(starting with an underscore) are usually not referenced because it is 3132expected that the OS will invoke them. 3133 3134---------------------------------------- 313531 March 2006. Summary of changes for version 20060331: 3136 31371) ACPI CA Core Subsystem: 3138 3139Implemented header file support for the following additional ACPI tables: 3140ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3141all current and known ACPI tables are now defined in the ACPICA headers and 3142are available for use by device drivers and other software. 3143 3144Implemented support to allow tables that contain ACPI names with invalid 3145characters to be loaded. Previously, this would cause the table load to 3146fail, but since there are several known cases of such tables on existing 3147machines, this change was made to enable ACPI support for them. Also, this 3148matches the behavior of the Microsoft ACPI implementation. 3149 3150Fixed a couple regressions introduced during the memory optimization in the 315120060317 release. The namespace node definition required additional 3152reorganization and an internal datatype that had been changed to 8-bit was 3153restored to 32-bit. (Valery Podrezov) 3154 3155Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3156could be passed through to AcpiOsReleaseObject which is unexpected. Such 3157null pointers are now trapped and ignored, matching the behavior of the 3158previous implementation before the deployment of AcpiOsReleaseObject. 3159(Valery Podrezov, Fiodor Suietov) 3160 3161Fixed a memory mapping leak during the deletion of a SystemMemory operation 3162region where a cached memory mapping was not deleted. This became a 3163noticeable problem for operation regions that are defined within frequently 3164used control methods. (Dana Meyers) 3165 3166Reorganized the ACPI table header files into two main files: one for the 3167ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3168ACPI tables that are consumed by the drivers and other software. The various 3169FADT definitions were merged into one common section and three different 3170tables (ACPI 1.0, 1.0+, and 2.0) 3171 3172Example Code and Data Size: These are the sizes for the OS-independent 3173acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3174debug version of the code includes the debug output trace mechanism and has 3175a much larger code and data size. 3176 3177 Previous Release: 3178 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3179 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3180 Current Release: 3181 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3182 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3183 3184 31852) iASL Compiler/Disassembler and Tools: 3186 3187Disassembler: Implemented support to decode and format all non-AML ACPI 3188tables (tables other than DSDTs and SSDTs.) This includes the new tables 3189added to the ACPICA headers, therefore all current and known ACPI tables are 3190supported. 3191 3192Disassembler: The change to allow ACPI names with invalid characters also 3193enables the disassembly of such tables. Invalid characters within names are 3194changed to '*' to make the name printable; the iASL compiler will still 3195generate an error for such names, however, since this is an invalid ACPI 3196character. 3197 3198Implemented an option for AcpiXtract (-a) to extract all tables found in the 3199input file. The default invocation extracts only the DSDTs and SSDTs. 3200 3201Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3202makefile for the AcpiXtract utility. 3203 3204---------------------------------------- 320517 March 2006. Summary of changes for version 20060317: 3206 32071) ACPI CA Core Subsystem: 3208 3209Implemented the use of a cache object for all internal namespace nodes. 3210Since there are about 1000 static nodes in a typical system, this will 3211decrease memory use for cache implementations that minimize per-allocation 3212overhead (such as a slab allocator.) 3213 3214Removed the reference count mechanism for internal namespace nodes, since it 3215was deemed unnecessary. This reduces the size of each namespace node by 3216about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3217and 32 bytes for the 64-bit case. 3218 3219Optimized several internal data structures to reduce object size on 64-bit 3220platforms by packing data within the 64-bit alignment. This includes the 3221frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3222instances corresponding to the namespace objects. 3223 3224Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3225and "Windows 2006". 3226 3227Split the allocation tracking mechanism out to a separate file, from 3228utalloc.c to uttrack.c. This mechanism appears to be only useful for 3229application-level code. Kernels may wish to not include uttrack.c in 3230distributions. 3231 3232Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3233code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3234macros.) 3235 3236Code and Data Size: These are the sizes for the acpica.lib produced by the 3237Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3238driver or OSPM code. The debug version of the code includes the debug output 3239trace mechanism and has a much larger code and data size. Note that these 3240values will vary depending on the efficiency of the compiler and the 3241compiler options used during generation. 3242 3243 Previous Release: 3244 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3245 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3246 Current Release: 3247 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3248 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3249 3250 32512) iASL Compiler/Disassembler and Tools: 3252 3253Implemented an ANSI C version of the acpixtract utility. This version will 3254automatically extract the DSDT and all SSDTs from the input acpidump text 3255file and dump the binary output to separate files. It can also display a 3256summary of the input file including the headers for each table found and 3257will extract any single ACPI table, with any signature. (See 3258source/tools/acpixtract) 3259 3260---------------------------------------- 326110 March 2006. Summary of changes for version 20060310: 3262 32631) ACPI CA Core Subsystem: 3264 3265Tagged all external interfaces to the subsystem with the new 3266ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3267kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3268macro. The default definition is NULL. 3269 3270Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3271This allows the host to define this as necessary to simplify kernel 3272integration. The default definition is ACPI_NATIVE_UINT. 3273 3274Fixed two interpreter problems related to error processing, the deletion of 3275objects, and placing invalid pointers onto the internal operator result 3276stack. BZ 6028, 6151 (Valery Podrezov) 3277 3278Increased the reference count threshold where a warning is emitted for large 3279reference counts in order to eliminate unnecessary warnings on systems with 3280large namespaces (especially 64-bit.) Increased the value from 0x400 to 32810x800. 3282 3283Due to universal disagreement as to the meaning of the 'c' in the calloc() 3284function, the ACPI_MEM_CALLOCATE macro has been renamed to 3285ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3286ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3287ACPI_FREE. 3288 3289Code and Data Size: These are the sizes for the acpica.lib produced by the 3290Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3291driver or OSPM code. The debug version of the code includes the debug output 3292trace mechanism and has a much larger code and data size. Note that these 3293values will vary depending on the efficiency of the compiler and the 3294compiler options used during generation. 3295 3296 Previous Release: 3297 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3298 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3299 Current Release: 3300 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3301 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3302 3303 33042) iASL Compiler/Disassembler: 3305 3306Disassembler: implemented support for symbolic resource descriptor 3307references. If a CreateXxxxField operator references a fixed offset within a 3308resource descriptor, a name is assigned to the descriptor and the offset is 3309translated to the appropriate resource tag and pathname. The addition of 3310this support brings the disassembled code very close to the original ASL 3311source code and helps eliminate run-time errors when the disassembled code 3312is modified (and recompiled) in such a way as to invalidate the original 3313fixed offsets. 3314 3315Implemented support for a Descriptor Name as the last parameter to the ASL 3316Register() macro. This parameter was inadvertently left out of the ACPI 3317specification, and will be added for ACPI 3.0b. 3318 3319Fixed a problem where the use of the "_OSI" string (versus the full path 3320"\_OSI") caused an internal compiler error. ("No back ptr to op") 3321 3322Fixed a problem with the error message that occurs when an invalid string is 3323used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3324The correct message is now displayed. 3325 3326---------------------------------------- 332717 February 2006. Summary of changes for version 20060217: 3328 33291) ACPI CA Core Subsystem: 3330 3331Implemented a change to the IndexField support to match the behavior of the 3332Microsoft AML interpreter. The value written to the Index register is now a 3333byte offset, no longer an index based upon the width of the Data register. 3334This should fix IndexField problems seen on some machines where the Data 3335register is not exactly one byte wide. The ACPI specification will be 3336clarified on this point. 3337 3338Fixed a problem where several resource descriptor types could overrun the 3339internal descriptor buffer due to size miscalculation: VendorShort, 3340VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3341affect all platforms. 3342 3343Fixed a problem where individual resource descriptors were misaligned within 3344the internal buffer, causing alignment faults on IA64 platforms. 3345 3346Code and Data Size: These are the sizes for the acpica.lib produced by the 3347Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3348driver or OSPM code. The debug version of the code includes the debug output 3349trace mechanism and has a much larger code and data size. Note that these 3350values will vary depending on the efficiency of the compiler and the 3351compiler options used during generation. 3352 3353 Previous Release: 3354 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3355 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3356 Current Release: 3357 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3358 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3359 3360 33612) iASL Compiler/Disassembler: 3362 3363Implemented support for new reserved names: _WDG and _WED are Microsoft 3364extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3365defined method (Throttling Depth Limit.) 3366 3367Fixed a problem where a zero-length VendorShort or VendorLong resource 3368descriptor was incorrectly emitted as a descriptor of length one. 3369 3370---------------------------------------- 337110 February 2006. Summary of changes for version 20060210: 3372 33731) ACPI CA Core Subsystem: 3374 3375Removed a couple of extraneous ACPI_ERROR messages that appeared during 3376normal execution. These became apparent after the conversion from 3377ACPI_DEBUG_PRINT. 3378 3379Fixed a problem where the CreateField operator could hang if the BitIndex or 3380NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3381 3382Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3383failed with an exception. This also fixes a couple of related RefOf and 3384DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3385 3386Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3387AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 33885480) 3389 3390Implemented a memory cleanup at the end of the execution of each iteration 3391of an AML While() loop, preventing the accumulation of outstanding objects. 3392(Valery Podrezov, BZ 5427) 3393 3394Eliminated a chunk of duplicate code in the object resolution code. (Valery 3395Podrezov, BZ 5336) 3396 3397Fixed several warnings during the 64-bit code generation. 3398 3399The AcpiSrc source code conversion tool now inserts one line of whitespace 3400after an if() statement that is followed immediately by a comment, improving 3401readability of the Linux code. 3402 3403Code and Data Size: The current and previous library sizes for the core 3404subsystem are shown below. These are the code and data sizes for the 3405acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3406values do not include any ACPI driver or OSPM code. The debug version of the 3407code includes the debug output trace mechanism and has a much larger code 3408and data size. Note that these values will vary depending on the efficiency 3409of the compiler and the compiler options used during generation. 3410 3411 Previous Release: 3412 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3413 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3414 Current Release: 3415 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3416 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3417 3418 34192) iASL Compiler/Disassembler: 3420 3421Fixed a problem with the disassembly of a BankField operator with a complex 3422expression for the BankValue parameter. 3423 3424---------------------------------------- 342527 January 2006. Summary of changes for version 20060127: 3426 34271) ACPI CA Core Subsystem: 3428 3429Implemented support in the Resource Manager to allow unresolved namestring 3430references within resource package objects for the _PRT method. This support 3431is in addition to the previously implemented unresolved reference support 3432within the AML parser. If the interpreter slack mode is enabled, these 3433unresolved references will be passed through to the caller as a NULL package 3434entry. 3435 3436Implemented and deployed new macros and functions for error and warning 3437messages across the subsystem. These macros are simpler and generate less 3438code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3439ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3440macros remain defined to allow ACPI drivers time to migrate to the new 3441macros. 3442 3443Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3444Acquire/Release Lock OSL interfaces. 3445 3446Fixed a problem where Alias ASL operators are sometimes not correctly 3447resolved, in both the interpreter and the iASL compiler. 3448 3449Fixed several problems with the implementation of the ConcatenateResTemplate 3450ASL operator. As per the ACPI specification, zero length buffers are now 3451treated as a single EndTag. One-length buffers always cause a fatal 3452exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3453cause a fatal exception. 3454 3455Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3456interface. (With assistance from Thomas Renninger) 3457 3458Code and Data Size: The current and previous library sizes for the core 3459subsystem are shown below. These are the code and data sizes for the 3460acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3461values do not include any ACPI driver or OSPM code. The debug version of the 3462code includes the debug output trace mechanism and has a much larger code 3463and data size. Note that these values will vary depending on the efficiency 3464of the compiler and the compiler options used during generation. 3465 3466 Previous Release: 3467 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3468 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3469 Current Release: 3470 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3471 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3472 3473 34742) iASL Compiler/Disassembler: 3475 3476Fixed an internal error that was generated for any forward references to ASL 3477Alias objects. 3478 3479---------------------------------------- 348013 January 2006. Summary of changes for version 20060113: 3481 34821) ACPI CA Core Subsystem: 3483 3484Added 2006 copyright to all module headers and signons. This affects 3485virtually every file in the ACPICA core subsystem, iASL compiler, and the 3486utilities. 3487 3488Enhanced the ACPICA error reporting in order to simplify user migration to 3489the non-debug version of ACPICA. Replaced all instances of the 3490ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3491levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3492respectively. This preserves all error and warning messages in the non-debug 3493version of the ACPICA code (this has been referred to as the "debug lite" 3494option.) Over 200 cases were converted to create a total of over 380 3495error/warning messages across the ACPICA code. This increases the code and 3496data size of the default non-debug version of the code somewhat (about 13K), 3497but all error/warning reporting may be disabled if desired (and code 3498eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3499configuration option. The size of the debug version of ACPICA remains about 3500the same. 3501 3502Fixed a memory leak within the AML Debugger "Set" command. One object was 3503not properly deleted for every successful invocation of the command. 3504 3505Code and Data Size: The current and previous library sizes for the core 3506subsystem are shown below. These are the code and data sizes for the 3507acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3508values do not include any ACPI driver or OSPM code. The debug version of the 3509code includes the debug output trace mechanism and has a much larger code 3510and data size. Note that these values will vary depending on the efficiency 3511of the compiler and the compiler options used during generation. 3512 3513 Previous Release: 3514 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3515 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3516 Current Release: 3517 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3518 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3519 3520 35212) iASL Compiler/Disassembler: 3522 3523The compiler now officially supports the ACPI 3.0a specification that was 3524released on December 30, 2005. (Specification is available at www.acpi.info) 3525 3526---------------------------------------- 352716 December 2005. Summary of changes for version 20051216: 3528 35291) ACPI CA Core Subsystem: 3530 3531Implemented optional support to allow unresolved names within ASL Package 3532objects. A null object is inserted in the package when a named reference 3533cannot be located in the current namespace. Enabled via the interpreter 3534slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3535that contain such code. 3536 3537Implemented an optimization to the initialization sequence that can improve 3538boot time. During ACPI device initialization, the _STA method is now run if 3539and only if the _INI method exists. The _STA method is used to determine if 3540the device is present; An _INI can only be run if _STA returns present, but 3541it is a waste of time to run the _STA method if the _INI does not exist. 3542(Prototype and assistance from Dong Wei) 3543 3544Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3545available in the current compiler. Otherwise, the default (void *) cast is 3546used as before. 3547 3548Fixed some possible memory leaks found within the execution path of the 3549Break, Continue, If, and CreateField operators. (Valery Podrezov) 3550 3551Fixed a problem introduced in the 20051202 release where an exception is 3552generated during method execution if a control method attempts to declare 3553another method. 3554 3555Moved resource descriptor string constants that are used by both the AML 3556disassembler and AML debugger to the common utilities directory so that 3557these components are independent. 3558 3559Implemented support in the AcpiExec utility (-e switch) to globally ignore 3560exceptions during control method execution (method is not aborted.) 3561 3562Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3563generation. 3564 3565Code and Data Size: The current and previous library sizes for the core 3566subsystem are shown below. These are the code and data sizes for the 3567acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3568values do not include any ACPI driver or OSPM code. The debug version of the 3569code includes the debug output trace mechanism and has a much larger code 3570and data size. Note that these values will vary depending on the efficiency 3571of the compiler and the compiler options used during generation. 3572 3573 Previous Release: 3574 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3575 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3576 Current Release: 3577 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3578 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3579 3580 35812) iASL Compiler/Disassembler: 3582 3583Fixed a problem where a CPU stack overflow fault could occur if a recursive 3584method call was made from within a Return statement. 3585 3586---------------------------------------- 358702 December 2005. Summary of changes for version 20051202: 3588 35891) ACPI CA Core Subsystem: 3590 3591Modified the parsing of control methods to no longer create namespace 3592objects during the first pass of the parse. Objects are now created only 3593during the execute phase, at the moment the namespace creation operator is 3594encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3595should eliminate ALREADY_EXISTS exceptions seen on some machines where 3596reentrant control methods are protected by an AML mutex. The mutex will now 3597correctly block multiple threads from attempting to create the same object 3598more than once. 3599 3600Increased the number of available Owner Ids for namespace object tracking 3601from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3602some machines with a large number of ACPI tables (either static or dynamic). 3603 3604Fixed a problem with the AcpiExec utility where a fault could occur when the 3605-b switch (batch mode) is used. 3606 3607Enhanced the namespace dump routine to output the owner ID for each 3608namespace object. 3609 3610Code and Data Size: The current and previous library sizes for the core 3611subsystem are shown below. These are the code and data sizes for the 3612acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3613values do not include any ACPI driver or OSPM code. The debug version of the 3614code includes the debug output trace mechanism and has a much larger code 3615and data size. Note that these values will vary depending on the efficiency 3616of the compiler and the compiler options used during generation. 3617 3618 Previous Release: 3619 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3620 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3621 Current Release: 3622 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3623 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3624 3625 36262) iASL Compiler/Disassembler: 3627 3628Fixed a parse error during compilation of certain Switch/Case constructs. To 3629simplify the parse, the grammar now allows for multiple Default statements 3630and this error is now detected and flagged during the analysis phase. 3631 3632Disassembler: The disassembly now includes the contents of the original 3633table header within a comment at the start of the file. This includes the 3634name and version of the original ASL compiler. 3635 3636---------------------------------------- 363717 November 2005. Summary of changes for version 20051117: 3638 36391) ACPI CA Core Subsystem: 3640 3641Fixed a problem in the AML parser where the method thread count could be 3642decremented below zero if any errors occurred during the method parse phase. 3643This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3644This also fixed a related regression with the mechanism that detects and 3645corrects methods that cannot properly handle reentrancy (related to the 3646deployment of the new OwnerId mechanism.) 3647 3648Eliminated the pre-parsing of control methods (to detect errors) during 3649table load. Related to the problem above, this was causing unwind issues if 3650any errors occurred during the parse, and it seemed to be overkill. A table 3651load should not be aborted if there are problems with any single control 3652method, thus rendering this feature rather pointless. 3653 3654Fixed a problem with the new table-driven resource manager where an internal 3655buffer overflow could occur for small resource templates. 3656 3657Implemented a new external interface, AcpiGetVendorResource. This interface 3658will find and return a vendor-defined resource descriptor within a _CRS or 3659_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3660 3661Removed the length limit (200) on string objects as per the upcoming ACPI 36623.0A specification. This affects the following areas of the interpreter: 1) 3663any implicit conversion of a Buffer to a String, 2) a String object result 3664of the ASL Concatentate operator, 3) the String object result of the ASL 3665ToString operator. 3666 3667Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3668on a semaphore object would incorrectly timeout. This allows the 3669multithreading features of the AcpiExec utility to work properly under 3670Windows. 3671 3672Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3673the recently added file named "utresrc.c". 3674 3675Code and Data Size: The current and previous library sizes for the core 3676subsystem are shown below. These are the code and data sizes for the 3677acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3678values do not include any ACPI driver or OSPM code. The debug version of the 3679code includes the debug output trace mechanism and has a much larger code 3680and data size. Note that these values will vary depending on the efficiency 3681of the compiler and the compiler options used during generation. 3682 3683 Previous Release: 3684 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3685 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3686 Current Release: 3687 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3688 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3689 3690 36912) iASL Compiler/Disassembler: 3692 3693Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3694specification. For the iASL compiler, this means that string literals within 3695the source ASL can be of any length. 3696 3697Enhanced the listing output to dump the AML code for resource descriptors 3698immediately after the ASL code for each descriptor, instead of in a block at 3699the end of the entire resource template. 3700 3701Enhanced the compiler debug output to dump the entire original parse tree 3702constructed during the parse phase, before any transforms are applied to the 3703tree. The transformed tree is dumped also. 3704 3705---------------------------------------- 370602 November 2005. Summary of changes for version 20051102: 3707 37081) ACPI CA Core Subsystem: 3709 3710Modified the subsystem initialization sequence to improve GPE support. The 3711GPE initialization has been split into two parts in order to defer execution 3712of the _PRW methods (Power Resources for Wake) until after the hardware is 3713fully initialized and the SCI handler is installed. This allows the _PRW 3714methods to access fields protected by the Global Lock. This will fix systems 3715where a NO_GLOBAL_LOCK exception has been seen during initialization. 3716 3717Converted the ACPI internal object disassemble and display code within the 3718AML debugger to fully table-driven operation, reducing code size and 3719increasing maintainability. 3720 3721Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3722in the 20051021 release. 3723 3724Implemented support for "local" internal ACPI object types within the 3725debugger "Object" command and the AcpiWalkNamespace external interfaces. 3726These local types include RegionFields, BankFields, IndexFields, Alias, and 3727reference objects. 3728 3729Moved common AML resource handling code into a new file, "utresrc.c". This 3730code is shared by both the Resource Manager and the AML Debugger. 3731 3732Code and Data Size: The current and previous library sizes for the core 3733subsystem are shown below. These are the code and data sizes for the 3734acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3735values do not include any ACPI driver or OSPM code. The debug version of the 3736code includes the debug output trace mechanism and has a much larger code 3737and data size. Note that these values will vary depending on the efficiency 3738of the compiler and the compiler options used during generation. 3739 3740 Previous Release: 3741 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3742 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3743 Current Release: 3744 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3745 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3746 3747 37482) iASL Compiler/Disassembler: 3749 3750Fixed a problem with very large initializer lists (more than 4000 elements) 3751for both Buffer and Package objects where the parse stack could overflow. 3752 3753Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3754characters within comment fields. The scan is now always performed and is no 3755longer optional, detecting invalid characters within a source file 3756immediately rather than during the parse phase or later. 3757 3758Enhanced the ASL grammar definition to force early reductions on all list- 3759style grammar elements so that the overall parse stack usage is greatly 3760reduced. This should improve performance and reduce the possibility of parse 3761stack overflow. 3762 3763Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3764with the addition of a %expected statement, the compiler generates from 3765source with no warnings. 3766 3767Fixed a possible segment fault in the disassembler if the input filename 3768does not contain a "dot" extension (Thomas Renninger). 3769 3770---------------------------------------- 377121 October 2005. Summary of changes for version 20051021: 3772 37731) ACPI CA Core Subsystem: 3774 3775Implemented support for the EM64T and other x86-64 processors. This 3776essentially entails recognizing that these processors support non-aligned 3777memory transfers. Previously, all 64-bit processors were assumed to lack 3778hardware support for non-aligned transfers. 3779 3780Completed conversion of the Resource Manager to nearly full table-driven 3781operation. Specifically, the resource conversion code (convert AML to 3782internal format and the reverse) and the debug code to dump internal 3783resource descriptors are fully table-driven, reducing code and data size and 3784improving maintainability. 3785 3786The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3787on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3788Alexey Starikovskiy) 3789 3790Implemented support within the resource conversion code for the Type- 3791Specific byte within the various ACPI 3.0 *WordSpace macros. 3792 3793Fixed some issues within the resource conversion code for the type-specific 3794flags for both Memory and I/O address resource descriptors. For Memory, 3795implemented support for the MTP and TTP flags. For I/O, split the TRS and 3796TTP flags into two separate fields. 3797 3798Code and Data Size: The current and previous library sizes for the core 3799subsystem are shown below. These are the code and data sizes for the 3800acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3801values do not include any ACPI driver or OSPM code. The debug version of the 3802code includes the debug output trace mechanism and has a much larger code 3803and data size. Note that these values will vary depending on the efficiency 3804of the compiler and the compiler options used during generation. 3805 3806 Previous Release: 3807 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3808 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3809 Current Release: 3810 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3811 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3812 3813 3814 38152) iASL Compiler/Disassembler: 3816 3817Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3818corresponding ResourceSource string was not also present in a resource 3819descriptor declaration. This restriction caused problems with existing 3820AML/ASL code that includes the Index byte without the string. When such AML 3821was disassembled, it could not be compiled without modification. Further, 3822the modified code created a resource template with a different size than the 3823original, breaking code that used fixed offsets into the resource template 3824buffer. 3825 3826Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3827byte. This byte is now emitted if present so that the exact AML can be 3828reproduced when the disassembled code is recompiled. 3829 3830Improved comments and text alignment for the resource descriptor code 3831emitted by the disassembler. 3832 3833Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3834Register() resource descriptor. 3835 3836---------------------------------------- 383730 September 2005. Summary of changes for version 20050930: 3838 38391) ACPI CA Core Subsystem: 3840 3841Completed a major overhaul of the Resource Manager code - specifically, 3842optimizations in the area of the AML/internal resource conversion code. The 3843code has been optimized to simplify and eliminate duplicated code, CPU stack 3844use has been decreased by optimizing function parameters and local 3845variables, and naming conventions across the manager have been standardized 3846for clarity and ease of maintenance (this includes function, parameter, 3847variable, and struct/typedef names.) The update may force changes in some 3848driver code, depending on how resources are handled by the host OS. 3849 3850All Resource Manager dispatch and information tables have been moved to a 3851single location for clarity and ease of maintenance. One new file was 3852created, named "rsinfo.c". 3853 3854The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3855guarantee that the argument is not evaluated twice, making them less prone 3856to macro side-effects. However, since there exists the possibility of 3857additional stack use if a particular compiler cannot optimize them (such as 3858in the debug generation case), the original macros are optionally available. 3859Note that some invocations of the return_VALUE macro may now cause size 3860mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3861eliminate these. (From Randy Dunlap) 3862 3863Implemented a new mechanism to enable debug tracing for individual control 3864methods. A new external interface, AcpiDebugTrace, is provided to enable 3865this mechanism. The intent is to allow the host OS to easily enable and 3866disable tracing for problematic control methods. This interface can be 3867easily exposed to a user or debugger interface if desired. See the file 3868psxface.c for details. 3869 3870AcpiUtCallocate will now return a valid pointer if a length of zero is 3871specified - a length of one is used and a warning is issued. This matches 3872the behavior of AcpiUtAllocate. 3873 3874Code and Data Size: The current and previous library sizes for the core 3875subsystem are shown below. These are the code and data sizes for the 3876acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3877values do not include any ACPI driver or OSPM code. The debug version of the 3878code includes the debug output trace mechanism and has a much larger code 3879and data size. Note that these values will vary depending on the efficiency 3880of the compiler and the compiler options used during generation. 3881 3882 Previous Release: 3883 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3884 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3885 Current Release: 3886 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3887 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3888 3889 38902) iASL Compiler/Disassembler: 3891 3892A remark is issued if the effective compile-time length of a package or 3893buffer is zero. Previously, this was a warning. 3894 3895---------------------------------------- 389616 September 2005. Summary of changes for version 20050916: 3897 38981) ACPI CA Core Subsystem: 3899 3900Fixed a problem within the Resource Manager where support for the Generic 3901Register descriptor was not fully implemented. This descriptor is now fully 3902recognized, parsed, disassembled, and displayed. 3903 3904Completely restructured the Resource Manager code to utilize table-driven 3905dispatch and lookup, eliminating many of the large switch() statements. This 3906reduces overall subsystem code size and code complexity. Affects the 3907resource parsing and construction, disassembly, and debug dump output. 3908 3909Cleaned up and restructured the debug dump output for all resource 3910descriptors. Improved readability of the output and reduced code size. 3911 3912Fixed a problem where changes to internal data structures caused the 3913optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 3914 3915Code and Data Size: The current and previous library sizes for the core 3916subsystem are shown below. These are the code and data sizes for the 3917acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3918values do not include any ACPI driver or OSPM code. The debug version of the 3919code includes the debug output trace mechanism and has a much larger code 3920and data size. Note that these values will vary depending on the efficiency 3921of the compiler and the compiler options used during generation. 3922 3923 Previous Release: 3924 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3925 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3926 Current Release: 3927 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3928 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3929 3930 39312) iASL Compiler/Disassembler: 3932 3933Updated the disassembler to automatically insert an EndDependentFn() macro 3934into the ASL stream if this macro is missing in the original AML code, 3935simplifying compilation of the resulting ASL module. 3936 3937Fixed a problem in the disassembler where a disassembled ResourceSource 3938string (within a large resource descriptor) was not surrounded by quotes and 3939not followed by a comma, causing errors when the resulting ASL module was 3940compiled. Also, escape sequences within a ResourceSource string are now 3941handled correctly (especially "\\") 3942 3943---------------------------------------- 394402 September 2005. Summary of changes for version 20050902: 3945 39461) ACPI CA Core Subsystem: 3947 3948Fixed a problem with the internal Owner ID allocation and deallocation 3949mechanisms for control method execution and recursive method invocation. 3950This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 3951messages seen on some systems. Recursive method invocation depth is 3952currently limited to 255. (Alexey Starikovskiy) 3953 3954Completely eliminated all vestiges of support for the "module-level 3955executable code" until this support is fully implemented and debugged. This 3956should eliminate the NO_RETURN_VALUE exceptions seen during table load on 3957some systems that invoke this support. 3958 3959Fixed a problem within the resource manager code where the transaction flags 3960for a 64-bit address descriptor were handled incorrectly in the type- 3961specific flag byte. 3962 3963Consolidated duplicate code within the address descriptor resource manager 3964code, reducing overall subsystem code size. 3965 3966Fixed a fault when using the AML debugger "disassemble" command to 3967disassemble individual control methods. 3968 3969Removed references to the "release_current" directory within the Unix 3970release package. 3971 3972Code and Data Size: The current and previous core subsystem library sizes 3973are shown below. These are the code and data sizes for the acpica.lib 3974produced by the Microsoft Visual C++ 6.0 compiler. These values do not 3975include any ACPI driver or OSPM code. The debug version of the code includes 3976the debug output trace mechanism and has a much larger code and data size. 3977Note that these values will vary depending on the efficiency of the compiler 3978and the compiler options used during generation. 3979 3980 Previous Release: 3981 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3982 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3983 Current Release: 3984 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3985 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3986 3987 39882) iASL Compiler/Disassembler: 3989 3990Implemented an error check for illegal duplicate values in the interrupt and 3991dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 3992Interrupt(). 3993 3994Implemented error checking for the Irq() and IrqNoFlags() macros to detect 3995too many values in the interrupt list (16 max) and invalid values in the 3996list (range 0 - 15) 3997 3998The maximum length string literal within an ASL file is now restricted to 3999200 characters as per the ACPI specification. 4000 4001Fixed a fault when using the -ln option (generate namespace listing). 4002 4003Implemented an error check to determine if a DescriptorName within a 4004resource descriptor has already been used within the current scope. 4005 4006---------------------------------------- 400715 August 2005. Summary of changes for version 20050815: 4008 40091) ACPI CA Core Subsystem: 4010 4011Implemented a full bytewise compare to determine if a table load request is 4012attempting to load a duplicate table. The compare is performed if the table 4013signatures and table lengths match. This will allow different tables with 4014the same OEM Table ID and revision to be loaded - probably against the ACPI 4015specification, but discovered in the field nonetheless. 4016 4017Added the changes.txt logfile to each of the zipped release packages. 4018 4019Code and Data Size: Current and previous core subsystem library sizes are 4020shown below. These are the code and data sizes for the acpica.lib produced 4021by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4022any ACPI driver or OSPM code. The debug version of the code includes the 4023debug output trace mechanism and has a much larger code and data size. Note 4024that these values will vary depending on the efficiency of the compiler and 4025the compiler options used during generation. 4026 4027 Previous Release: 4028 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4029 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4030 Current Release: 4031 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4032 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4033 4034 40352) iASL Compiler/Disassembler: 4036 4037Fixed a problem where incorrect AML code could be generated for Package 4038objects if optimization is disabled (via the -oa switch). 4039 4040Fixed a problem with where incorrect AML code is generated for variable- 4041length packages when the package length is not specified and the number of 4042initializer values is greater than 255. 4043 4044 4045---------------------------------------- 404629 July 2005. Summary of changes for version 20050729: 4047 40481) ACPI CA Core Subsystem: 4049 4050Implemented support to ignore an attempt to install/load a particular ACPI 4051table more than once. Apparently there exists BIOS code that repeatedly 4052attempts to load the same SSDT upon certain events. With assistance from 4053Venkatesh Pallipadi. 4054 4055Restructured the main interface to the AML parser in order to correctly 4056handle all exceptional conditions. This will prevent leakage of the OwnerId 4057resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4058machines. With assistance from Alexey Starikovskiy. 4059 4060Support for "module level code" has been disabled in this version due to a 4061number of issues that have appeared on various machines. The support can be 4062enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4063compilation. When the issues are fully resolved, the code will be enabled by 4064default again. 4065 4066Modified the internal functions for debug print support to define the 4067FunctionName parameter as a (const char *) for compatibility with compiler 4068built-in macros such as __FUNCTION__, etc. 4069 4070Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4071 4072Implemented support to display an object count summary for the AML Debugger 4073commands Object and Methods. 4074 4075Code and Data Size: Current and previous core subsystem library sizes are 4076shown below. These are the code and data sizes for the acpica.lib produced 4077by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4078any ACPI driver or OSPM code. The debug version of the code includes the 4079debug output trace mechanism and has a much larger code and data size. Note 4080that these values will vary depending on the efficiency of the compiler and 4081the compiler options used during generation. 4082 4083 Previous Release: 4084 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4085 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4086 Current Release: 4087 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4088 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4089 4090 40912) iASL Compiler/Disassembler: 4092 4093Fixed a regression that appeared in the 20050708 version of the compiler 4094where an error message was inadvertently emitted for invocations of the _OSI 4095reserved control method. 4096 4097---------------------------------------- 409808 July 2005. Summary of changes for version 20050708: 4099 41001) ACPI CA Core Subsystem: 4101 4102The use of the CPU stack in the debug version of the subsystem has been 4103considerably reduced. Previously, a debug structure was declared in every 4104function that used the debug macros. This structure has been removed in 4105favor of declaring the individual elements as parameters to the debug 4106functions. This reduces the cumulative stack use during nested execution of 4107ACPI function calls at the cost of a small increase in the code size of the 4108debug version of the subsystem. With assistance from Alexey Starikovskiy and 4109Len Brown. 4110 4111Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4112headers to define a macro that will return the current function name at 4113runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4114the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4115compiler-dependent header, the function name is saved on the CPU stack (one 4116pointer per function.) This mechanism is used because apparently there 4117exists no standard ANSI-C defined macro that that returns the function name. 4118 4119Redesigned and reimplemented the "Owner ID" mechanism used to track 4120namespace objects created/deleted by ACPI tables and control method 4121execution. A bitmap is now used to allocate and free the IDs, thus solving 4122the wraparound problem present in the previous implementation. The size of 4123the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4124Starikovskiy). 4125 4126Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4127flag definitions within the headers for the predefined ACPI tables. These 4128have been replaced by UINT8_BIT in order to increase the code portability of 4129the subsystem. If the use of UINT8 remains a problem, we may be forced to 4130eliminate bitfields entirely because of a lack of portability. 4131 4132Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4133is a frequently used function and this improvement increases the performance 4134of the entire subsystem (Alexey Starikovskiy). 4135 4136Fixed several possible memory leaks and the inverse - premature object 4137deletion (Alexey Starikovskiy). 4138 4139Code and Data Size: Current and previous core subsystem library sizes are 4140shown below. These are the code and data sizes for the acpica.lib produced 4141by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4142any ACPI driver or OSPM code. The debug version of the code includes the 4143debug output trace mechanism and has a much larger code and data size. Note 4144that these values will vary depending on the efficiency of the compiler and 4145the compiler options used during generation. 4146 4147 Previous Release: 4148 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4149 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4150 Current Release: 4151 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4152 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4153 4154---------------------------------------- 415524 June 2005. Summary of changes for version 20050624: 4156 41571) ACPI CA Core Subsystem: 4158 4159Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4160the host-defined cache object. This allows the OSL implementation to define 4161and type this object in any manner desired, simplifying the OSL 4162implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4163Linux, and should be defined in the OS-specific header file for other 4164operating systems as required. 4165 4166Changed the interface to AcpiOsAcquireObject to directly return the 4167requested object as the function return (instead of ACPI_STATUS.) This 4168change was made for performance reasons, since this is the purpose of the 4169interface in the first place. AcpiOsAcquireObject is now similar to the 4170AcpiOsAllocate interface. 4171 4172Implemented a new AML debugger command named Businfo. This command displays 4173information about all devices that have an associate _PRT object. The _ADR, 4174_HID, _UID, and _CID are displayed for these devices. 4175 4176Modified the initialization sequence in AcpiInitializeSubsystem to call the 4177OSL interface AcpiOslInitialize first, before any local initialization. This 4178change was required because the global initialization now calls OSL 4179interfaces. 4180 4181Enhanced the Dump command to display the entire contents of Package objects 4182(including all sub-objects and their values.) 4183 4184Restructured the code base to split some files because of size and/or 4185because the code logically belonged in a separate file. New files are listed 4186below. All makefiles and project files included in the ACPI CA release have 4187been updated. 4188 utilities/utcache.c /* Local cache interfaces */ 4189 utilities/utmutex.c /* Local mutex support */ 4190 utilities/utstate.c /* State object support */ 4191 interpreter/parser/psloop.c /* Main AML parse loop */ 4192 4193Code and Data Size: Current and previous core subsystem library sizes are 4194shown below. These are the code and data sizes for the acpica.lib produced 4195by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4196any ACPI driver or OSPM code. The debug version of the code includes the 4197debug output trace mechanism and has a much larger code and data size. Note 4198that these values will vary depending on the efficiency of the compiler and 4199the compiler options used during generation. 4200 4201 Previous Release: 4202 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4203 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4204 Current Release: 4205 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4206 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4207 4208 42092) iASL Compiler/Disassembler: 4210 4211Fixed a regression introduced in version 20050513 where the use of a Package 4212object within a Case() statement caused a compile time exception. The 4213original behavior has been restored (a Match() operator is emitted.) 4214 4215---------------------------------------- 421617 June 2005. Summary of changes for version 20050617: 4217 42181) ACPI CA Core Subsystem: 4219 4220Moved the object cache operations into the OS interface layer (OSL) to allow 4221the host OS to handle these operations if desired (for example, the Linux 4222OSL will invoke the slab allocator). This support is optional; the compile 4223time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4224code in the ACPI CA core. The new OSL interfaces are shown below. See 4225utalloc.c for an example implementation, and acpiosxf.h for the exact 4226interface definitions. With assistance from Alexey Starikovskiy. 4227 AcpiOsCreateCache 4228 AcpiOsDeleteCache 4229 AcpiOsPurgeCache 4230 AcpiOsAcquireObject 4231 AcpiOsReleaseObject 4232 4233Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4234and restore a flags parameter. This fits better with many OS lock models. 4235Note: the current execution state (interrupt handler or not) is no longer 4236passed to these interfaces. If necessary, the OSL must determine this state 4237by itself, a simple and fast operation. With assistance from Alexey 4238Starikovskiy. 4239 4240Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4241present if the revision of the RSDP was 2 or greater. According to the ACPI 4242specification, the XSDT is optional in all cases, and the table manager 4243therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4244Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4245only the RSDT. 4246 4247Fixed an interpreter problem with the Mid() operator in the case of an input 4248string where the resulting output string is of zero length. It now correctly 4249returns a valid, null terminated string object instead of a string object 4250with a null pointer. 4251 4252Fixed a problem with the control method argument handling to allow a store 4253to an Arg object that already contains an object of type Device. The Device 4254object is now correctly overwritten. Previously, an error was returned. 4255 4256 4257Enhanced the debugger Find command to emit object values in addition to the 4258found object pathnames. The output format is the same as the dump namespace 4259command. 4260 4261Enhanced the debugger Set command. It now has the ability to set the value 4262of any Named integer object in the namespace (Previously, only method locals 4263and args could be set.) 4264 4265Code and Data Size: Current and previous core subsystem library sizes are 4266shown below. These are the code and data sizes for the acpica.lib produced 4267by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4268any ACPI driver or OSPM code. The debug version of the code includes the 4269debug output trace mechanism and has a much larger code and data size. Note 4270that these values will vary depending on the efficiency of the compiler and 4271the compiler options used during generation. 4272 4273 Previous Release: 4274 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4275 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4276 Current Release: 4277 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4278 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4279 4280 42812) iASL Compiler/Disassembler: 4282 4283Fixed a regression in the disassembler where if/else/while constructs were 4284output incorrectly. This problem was introduced in the previous release 4285(20050526). This problem also affected the single-step disassembly in the 4286debugger. 4287 4288Fixed a problem where compiling the reserved _OSI method would randomly (but 4289rarely) produce compile errors. 4290 4291Enhanced the disassembler to emit compilable code in the face of incorrect 4292AML resource descriptors. If the optional ResourceSourceIndex is present, 4293but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4294disassembly. Otherwise, the resulting code cannot be compiled without 4295errors. 4296 4297---------------------------------------- 429826 May 2005. Summary of changes for version 20050526: 4299 43001) ACPI CA Core Subsystem: 4301 4302Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4303the module level (not within a control method.) These opcodes are executed 4304exactly once at the time the table is loaded. This type of code was legal up 4305until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4306order to provide backwards compatibility with earlier BIOS implementations. 4307This eliminates the "Encountered executable code at module level" warning 4308that was previously generated upon detection of such code. 4309 4310Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4311inadvertently be generated during the lookup of namespace objects in the 4312second pass parse of ACPI tables and control methods. It appears that this 4313problem could occur during the resolution of forward references to namespace 4314objects. 4315 4316Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4317corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4318allows the deadlock detection debug code to be compiled out in the normal 4319case, improving mutex performance (and overall subsystem performance) 4320considerably. 4321 4322Implemented a handful of miscellaneous fixes for possible memory leaks on 4323error conditions and error handling control paths. These fixes were 4324suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4325 4326Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4327to prevent a fault in this error case. 4328 4329Code and Data Size: Current and previous core subsystem library sizes are 4330shown below. These are the code and data sizes for the acpica.lib produced 4331by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4332any ACPI driver or OSPM code. The debug version of the code includes the 4333debug output trace mechanism and has a much larger code and data size. Note 4334that these values will vary depending on the efficiency of the compiler and 4335the compiler options used during generation. 4336 4337 Previous Release: 4338 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4339 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4340 Current Release: 4341 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4342 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4343 4344 43452) iASL Compiler/Disassembler: 4346 4347Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4348the module level (not within a control method.) These operators will be 4349executed once at the time the table is loaded. This type of code was legal 4350up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4351compiler in order to provide backwards compatibility with earlier BIOS ASL 4352code. 4353 4354The ACPI integer width (specified via the table revision ID or the -r 4355override, 32 or 64 bits) is now used internally during compile-time constant 4356folding to ensure that constants are truncated to 32 bits if necessary. 4357Previously, the revision ID value was only emitted in the AML table header. 4358 4359An error message is now generated for the Mutex and Method operators if the 4360SyncLevel parameter is outside the legal range of 0 through 15. 4361 4362Fixed a problem with the Method operator ParameterTypes list handling (ACPI 43633.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4364The actual underlying implementation of method argument typechecking is 4365still under development, however. 4366 4367---------------------------------------- 436813 May 2005. Summary of changes for version 20050513: 4369 43701) ACPI CA Core Subsystem: 4371 4372Implemented support for PCI Express root bridges -- added support for device 4373PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4374 4375The interpreter now automatically truncates incoming 64-bit constants to 32 4376bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4377also affects the iASL compiler constant folding. (Note: as per below, the 4378iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4379 4380Fixed a problem where string and buffer objects with "static" pointers 4381(pointers to initialization data within an ACPI table) were not handled 4382consistently. The internal object copy operation now always copies the data 4383to a newly allocated buffer, regardless of whether the source object is 4384static or not. 4385 4386Fixed a problem with the FromBCD operator where an implicit result 4387conversion was improperly performed while storing the result to the target 4388operand. Since this is an "explicit conversion" operator, the implicit 4389conversion should never be performed on the output. 4390 4391Fixed a problem with the CopyObject operator where a copy to an existing 4392named object did not always completely overwrite the existing object stored 4393at name. Specifically, a buffer-to-buffer copy did not delete the existing 4394buffer. 4395 4396Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4397structs for consistency. 4398 4399Code and Data Size: Current and previous core subsystem library sizes are 4400shown below. These are the code and data sizes for the acpica.lib produced 4401by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4402any ACPI driver or OSPM code. The debug version of the code includes the 4403debug output trace mechanism and has a much larger code and data size. Note 4404that these values will vary depending on the efficiency of the compiler and 4405the compiler options used during generation. 4406 4407 Previous Release: 4408 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4409 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4410 Current Release: (Same sizes) 4411 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4412 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4413 4414 44152) iASL Compiler/Disassembler: 4416 4417The compiler now emits a warning if an attempt is made to generate a 64-bit 4418integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4419is truncated to 32 bits. 4420 4421Fixed a problem with large package objects: if the static length of the 4422package is greater than 255, the "variable length package" opcode is 4423emitted. Previously, this caused an error. This requires an update to the 4424ACPI spec, since it currently (incorrectly) states that packages larger than 4425255 elements are not allowed. 4426 4427The disassembler now correctly handles variable length packages and packages 4428larger than 255 elements. 4429 4430---------------------------------------- 443108 April 2005. Summary of changes for version 20050408: 4432 44331) ACPI CA Core Subsystem: 4434 4435Fixed three cases in the interpreter where an "index" argument to an ASL 4436function was still (internally) 32 bits instead of the required 64 bits. 4437This was the Index argument to the Index, Mid, and Match operators. 4438 4439The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4440not a POSIX-defined function and not present in most kernel-level C 4441libraries. All references to the C library strupr function have been removed 4442from the headers. 4443 4444Completed the deployment of static functions/prototypes. All prototypes with 4445the static attribute have been moved from the headers to the owning C file. 4446 4447Implemented an extract option (-e) for the AcpiBin utility (AML binary 4448utility). This option allows the utility to extract individual ACPI tables 4449from the output of AcpiDmp. It provides the same functionality of the 4450acpixtract.pl perl script without the worry of setting the correct perl 4451options. AcpiBin runs on Windows and has not yet been generated/validated in 4452the Linux/Unix environment (but should be soon). 4453 4454Updated and fixed the table dump option for AcpiBin (-d). This option 4455converts a single ACPI table to a hex/ascii file, similar to the output of 4456AcpiDmp. 4457 4458Code and Data Size: Current and previous core subsystem library sizes are 4459shown below. These are the code and data sizes for the acpica.lib produced 4460by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4461any ACPI driver or OSPM code. The debug version of the code includes the 4462debug output trace mechanism and has a much larger code and data size. Note 4463that these values will vary depending on the efficiency of the compiler and 4464the compiler options used during generation. 4465 4466 Previous Release: 4467 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4468 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4469 Current Release: 4470 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4471 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4472 4473 44742) iASL Compiler/Disassembler: 4475 4476Disassembler fix: Added a check to ensure that the table length found in the 4477ACPI table header within the input file is not longer than the actual input 4478file size. This indicates some kind of file or table corruption. 4479 4480---------------------------------------- 448129 March 2005. Summary of changes for version 20050329: 4482 44831) ACPI CA Core Subsystem: 4484 4485An error is now generated if an attempt is made to create a Buffer Field of 4486length zero (A CreateField with a length operand of zero.) 4487 4488The interpreter now issues a warning whenever executable code at the module 4489level is detected during ACPI table load. This will give some idea of the 4490prevalence of this type of code. 4491 4492Implemented support for references to named objects (other than control 4493methods) within package objects. 4494 4495Enhanced package object output for the debug object. Package objects are now 4496completely dumped, showing all elements. 4497 4498Enhanced miscellaneous object output for the debug object. Any object can 4499now be written to the debug object (for example, a device object can be 4500written, and the type of the object will be displayed.) 4501 4502The "static" qualifier has been added to all local functions across both the 4503core subsystem and the iASL compiler. 4504 4505The number of "long" lines (> 80 chars) within the source has been 4506significantly reduced, by about 1/3. 4507 4508Cleaned up all header files to ensure that all CA/iASL functions are 4509prototyped (even static functions) and the formatting is consistent. 4510 4511Two new header files have been added, acopcode.h and acnames.h. 4512 4513Removed several obsolete functions that were no longer used. 4514 4515Code and Data Size: Current and previous core subsystem library sizes are 4516shown below. These are the code and data sizes for the acpica.lib produced 4517by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4518any ACPI driver or OSPM code. The debug version of the code includes the 4519debug output trace mechanism and has a much larger code and data size. Note 4520that these values will vary depending on the efficiency of the compiler and 4521the compiler options used during generation. 4522 4523 Previous Release: 4524 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4525 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4526 Current Release: 4527 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4528 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4529 4530 4531 45322) iASL Compiler/Disassembler: 4533 4534Fixed a problem with the resource descriptor generation/support. For the 4535ResourceSourceIndex and the ResourceSource fields, both must be present, or 4536both must be not present - can't have one without the other. 4537 4538The compiler now returns non-zero from the main procedure if any errors have 4539occurred during the compilation. 4540 4541 4542---------------------------------------- 454309 March 2005. Summary of changes for version 20050309: 4544 45451) ACPI CA Core Subsystem: 4546 4547The string-to-buffer implicit conversion code has been modified again after 4548a change to the ACPI specification. In order to match the behavior of the 4549other major ACPI implementation, the target buffer is no longer truncated if 4550the source string is smaller than an existing target buffer. This change 4551requires an update to the ACPI spec, and should eliminate the recent 4552AE_AML_BUFFER_LIMIT issues. 4553 4554The "implicit return" support was rewritten to a new algorithm that solves 4555the general case. Rather than attempt to determine when a method is about to 4556exit, the result of every ASL operator is saved momentarily until the very 4557next ASL operator is executed. Therefore, no matter how the method exits, 4558there will always be a saved implicit return value. This feature is only 4559enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4560AE_AML_NO_RETURN_VALUE errors when enabled. 4561 4562Implemented implicit conversion support for the predicate (operand) of the 4563If, Else, and While operators. String and Buffer arguments are automatically 4564converted to Integers. 4565 4566Changed the string-to-integer conversion behavior to match the new ACPI 4567errata: "If no integer object exists, a new integer is created. The ASCII 4568string is interpreted as a hexadecimal constant. Each string character is 4569interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4570with the first character as the most significant digit, and ending with the 4571first non-hexadecimal character or end-of-string." This means that the first 4572non-hex character terminates the conversion and this is the code that was 4573changed. 4574 4575Fixed a problem where the ObjectType operator would fail (fault) when used 4576on an Index of a Package which pointed to a null package element. The 4577operator now properly returns zero (Uninitialized) in this case. 4578 4579Fixed a problem where the While operator used excessive memory by not 4580properly popping the result stack during execution. There was no memory leak 4581after execution, however. (Code provided by Valery Podrezov.) 4582 4583Fixed a problem where references to control methods within Package objects 4584caused the method to be invoked, instead of producing a reference object 4585pointing to the method. 4586 4587Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4588improve performance and reduce code size. (Code provided by Alexey 4589Starikovskiy.) 4590 4591Code and Data Size: Current and previous core subsystem library sizes are 4592shown below. These are the code and data sizes for the acpica.lib produced 4593by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4594any ACPI driver or OSPM code. The debug version of the code includes the 4595debug output trace mechanism and has a much larger code and data size. Note 4596that these values will vary depending on the efficiency of the compiler and 4597the compiler options used during generation. 4598 4599 Previous Release: 4600 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4601 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4602 Current Release: 4603 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4604 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4605 4606 46072) iASL Compiler/Disassembler: 4608 4609Fixed a problem with the Return operator with no arguments. Since the AML 4610grammar for the byte encoding requires an operand for the Return opcode, the 4611compiler now emits a Return(Zero) for this case. An ACPI specification 4612update has been written for this case. 4613 4614For tables other than the DSDT, namepath optimization is automatically 4615disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4616compiler has no knowledge of where, and thus cannot optimize namepaths. 4617 4618Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4619inadvertently omitted from the ACPI specification, and will require an 4620update to the spec. 4621 4622The source file scan for ASCII characters is now optional (-a). This change 4623was made because some vendors place non-ascii characters within comments. 4624However, the scan is simply a brute-force byte compare to ensure all 4625characters in the file are in the range 0x00 to 0x7F. 4626 4627Fixed a problem with the CondRefOf operator where the compiler was 4628inappropriately checking for the existence of the target. Since the point of 4629the operator is to check for the existence of the target at run-time, the 4630compiler no longer checks for the target existence. 4631 4632Fixed a problem where errors generated from the internal AML interpreter 4633during constant folding were not handled properly, causing a fault. 4634 4635Fixed a problem with overly aggressive range checking for the Stall 4636operator. The valid range (max 255) is now only checked if the operand is of 4637type Integer. All other operand types cannot be statically checked. 4638 4639Fixed a problem where control method references within the RefOf, DeRefOf, 4640and ObjectType operators were not treated properly. They are now treated as 4641actual references, not method invocations. 4642 4643Fixed and enhanced the "list namespace" option (-ln). This option was broken 4644a number of releases ago. 4645 4646Improved error handling for the Field, IndexField, and BankField operators. 4647The compiler now cleanly reports and recovers from errors in the field 4648component (FieldUnit) list. 4649 4650Fixed a disassembler problem where the optional ResourceDescriptor fields 4651TRS and TTP were not always handled correctly. 4652 4653Disassembler - Comments in output now use "//" instead of "/*" 4654 4655---------------------------------------- 465628 February 2005. Summary of changes for version 20050228: 4657 46581) ACPI CA Core Subsystem: 4659 4660Fixed a problem where the result of an Index() operator (an object 4661reference) must increment the reference count on the target object for the 4662life of the object reference. 4663 4664Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4665Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4666resource descriptors. 4667 4668Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4669Space Descriptor" string, indicating interpreter support for the descriptors 4670above. 4671 4672Implemented header support for the new ACPI 3.0 FADT flag bits. 4673 4674Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4675status/enable registers. 4676 4677Updated header support for the MADT processor local Apic struct and MADT 4678platform interrupt source struct for new ACPI 3.0 fields. 4679 4680Implemented header support for the SRAT and SLIT ACPI tables. 4681 4682Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4683at runtime. 4684 4685Code and Data Size: Current and previous core subsystem library sizes are 4686shown below. These are the code and data sizes for the acpica.lib produced 4687by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4688any ACPI driver or OSPM code. The debug version of the code includes the 4689debug output trace mechanism and has a much larger code and data size. Note 4690that these values will vary depending on the efficiency of the compiler and 4691the compiler options used during generation. 4692 4693 Previous Release: 4694 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4695 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4696 Current Release: 4697 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4698 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4699 4700 47012) iASL Compiler/Disassembler: 4702 4703Fixed a problem with the internal 64-bit String-to-integer conversion with 4704strings less than two characters long. 4705 4706Fixed a problem with constant folding where the result of the Index() 4707operator can not be considered a constant. This means that Index() cannot be 4708a type3 opcode and this will require an update to the ACPI specification. 4709 4710Disassembler: Implemented support for the TTP, MTP, and TRS resource 4711descriptor fields. These fields were inadvertently ignored and not output in 4712the disassembly of the resource descriptor. 4713 4714 4715 ---------------------------------------- 471611 February 2005. Summary of changes for version 20050211: 4717 47181) ACPI CA Core Subsystem: 4719 4720Implemented ACPI 3.0 support for implicit conversion within the Match() 4721operator. MatchObjects can now be of type integer, buffer, or string instead 4722of just type integer. Package elements are implicitly converted to the type 4723of the MatchObject. This change aligns the behavior of Match() with the 4724behavior of the other logical operators (LLess(), etc.) It also requires an 4725errata change to the ACPI specification as this support was intended for 4726ACPI 3.0, but was inadvertently omitted. 4727 4728Fixed a problem with the internal implicit "to buffer" conversion. Strings 4729that are converted to buffers will cause buffer truncation if the string is 4730smaller than the target buffer. Integers that are converted to buffers will 4731not cause buffer truncation, only zero extension (both as per the ACPI 4732spec.) The problem was introduced when code was added to truncate the 4733buffer, but this should not be performed in all cases, only the string case. 4734 4735Fixed a problem with the Buffer and Package operators where the interpreter 4736would get confused if two such operators were used as operands to an ASL 4737operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4738stack was not being popped after the execution of these operators, resulting 4739in an AE_NO_RETURN_VALUE exception. 4740 4741Fixed a problem with constructs of the form Store(Index(...),...). The 4742reference object returned from Index was inadvertently resolved to an actual 4743value. This problem was introduced in version 20050114 when the behavior of 4744Store() was modified to restrict the object types that can be used as the 4745source operand (to match the ACPI specification.) 4746 4747Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4748 4749Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4750 4751Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 4752 4753Code and Data Size: Current and previous core subsystem library sizes are 4754shown below. These are the code and data sizes for the acpica.lib produced 4755by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4756any ACPI driver or OSPM code. The debug version of the code includes the 4757debug output trace mechanism and has a much larger code and data size. Note 4758that these values will vary depending on the efficiency of the compiler and 4759the compiler options used during generation. 4760 4761 Previous Release: 4762 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4763 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4764 Current Release: 4765 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4766 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4767 4768 47692) iASL Compiler/Disassembler: 4770 4771Fixed a code generation problem in the constant folding optimization code 4772where incorrect code was generated if a constant was reduced to a buffer 4773object (i.e., a reduced type 5 opcode.) 4774 4775Fixed a typechecking problem for the ToBuffer operator. Caused by an 4776incorrect return type in the internal opcode information table. 4777 4778---------------------------------------- 477925 January 2005. Summary of changes for version 20050125: 4780 47811) ACPI CA Core Subsystem: 4782 4783Fixed a recently introduced problem with the Global Lock where the 4784underlying semaphore was not created. This problem was introduced in 4785version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4786Acquire() operation on _GL. 4787 4788The local object cache is now optional, and is disabled by default. Both 4789AcpiExec and the iASL compiler enable the cache because they run in user 4790mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4791to enable the local cache. 4792 4793Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4794optional "implicit return" support where an error was returned if no return 4795object was expected, but one was implicitly returned. AE_OK is now returned 4796in this case and the implicitly returned object is deleted. 4797AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4798methods such as _STA and _INI where the return type is known up front. 4799 4800Fixed a few issues with the internal convert-to-integer code. It now returns 4801an error if an attempt is made to convert a null string, a string of only 4802blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4803and explicit conversion via the ToInteger() operator. 4804 4805The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4806not needed for normal operation and should increase the performance of the 4807entire subsystem. The code remains in case it is needed for debug purposes 4808again. 4809 4810The AcpiExec source and makefile are included in the Unix/Linux package for 4811the first time. 4812 4813Code and Data Size: Current and previous core subsystem library sizes are 4814shown below. These are the code and data sizes for the acpica.lib produced 4815by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4816any ACPI driver or OSPM code. The debug version of the code includes the 4817debug output trace mechanism and has a much larger code and data size. Note 4818that these values will vary depending on the efficiency of the compiler and 4819the compiler options used during generation. 4820 4821 Previous Release: 4822 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4823 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4824 Current Release: 4825 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4826 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4827 48282) iASL Compiler/Disassembler: 4829 4830Switch/Case support: A warning is now issued if the type of the Switch value 4831cannot be determined at compile time. For example, Switch(Arg0) will 4832generate the warning, and the type is assumed to be an integer. As per the 4833ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4834warning. 4835 4836Switch/Case support: Implemented support for buffer and string objects as 4837the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4838buffers and strings. 4839 4840Switch/Case support: The emitted code for the LEqual() comparisons now uses 4841the switch value as the first operand, not the second. The case value is now 4842the second operand, and this allows the case value to be implicitly 4843converted to the type of the switch value, not the other way around. 4844 4845Switch/Case support: Temporary variables are now emitted immediately within 4846the control method, not at the global level. This means that there are now 484736 temps available per-method, not 36 temps per-module as was the case with 4848the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4849 4850---------------------------------------- 485114 January 2005. Summary of changes for version 20050114: 4852 4853Added 2005 copyright to all module headers. This affects every module in 4854the core subsystem, iASL compiler, and the utilities. 4855 48561) ACPI CA Core Subsystem: 4857 4858Fixed an issue with the String-to-Buffer conversion code where the string 4859null terminator was not included in the buffer after conversion, but there 4860is existing ASL that assumes the string null terminator is included. This is 4861the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4862introduced in the previous version when the code was updated to correctly 4863set the converted buffer size as per the ACPI specification. The ACPI spec 4864is ambiguous and will be updated to specify that the null terminator must be 4865included in the converted buffer. This also affects the ToBuffer() ASL 4866operator. 4867 4868Fixed a problem with the Mid() ASL/AML operator where it did not work 4869correctly on Buffer objects. Newly created sub-buffers were not being marked 4870as initialized. 4871 4872 4873Fixed a problem in AcpiTbFindTable where incorrect string compares were 4874performed on the OemId and OemTableId table header fields. These fields are 4875not null terminated, so strncmp is now used instead of strcmp. 4876 4877Implemented a restriction on the Store() ASL/AML operator to align the 4878behavior with the ACPI specification. Previously, any object could be used 4879as the source operand. Now, the only objects that may be used are Integers, 4880Buffers, Strings, Packages, Object References, and DDB Handles. If 4881necessary, the original behavior can be restored by enabling the 4882EnableInterpreterSlack flag. 4883 4884Enhanced the optional "implicit return" support to allow an implicit return 4885value from methods that are invoked externally via the AcpiEvaluateObject 4886interface. This enables implicit returns from the _STA and _INI methods, 4887for example. 4888 4889Changed the Revision() ASL/AML operator to return the current version of the 4890AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 4891the supported ACPI version (This is the function of the _REV method). 4892 4893Updated the _REV predefined method to return the currently supported version 4894of ACPI, now 3. 4895 4896Implemented batch mode option for the AcpiExec utility (-b). 4897 4898Code and Data Size: Current and previous core subsystem library sizes are 4899shown below. These are the code and data sizes for the acpica.lib produced 4900by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4901any ACPI driver or OSPM code. The debug version of the code includes the 4902debug output trace mechanism and has a much larger code and data size. Note 4903that these values will vary depending on the efficiency of the compiler and 4904the compiler options used during generation. 4905 4906 Previous Release: 4907 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4908 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4909 Current Release: 4910 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4911 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4912 4913---------------------------------------- 491410 December 2004. Summary of changes for version 20041210: 4915 4916ACPI 3.0 support is nearing completion in both the iASL compiler and the 4917ACPI CA core subsystem. 4918 49191) ACPI CA Core Subsystem: 4920 4921Fixed a problem in the ToDecimalString operator where the resulting string 4922length was incorrectly calculated. The length is now calculated exactly, 4923eliminating incorrect AE_STRING_LIMIT exceptions. 4924 4925Fixed a problem in the ToHexString operator to allow a maximum 200 character 4926string to be produced. 4927 4928Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 4929routine where the length of the resulting buffer was not truncated to the 4930new size (if the target buffer already existed). 4931 4932Code and Data Size: Current and previous core subsystem library sizes are 4933shown below. These are the code and data sizes for the acpica.lib produced 4934by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4935any ACPI driver or OSPM code. The debug version of the code includes the 4936debug output trace mechanism and has a much larger code and data size. Note 4937that these values will vary depending on the efficiency of the compiler and 4938the compiler options used during generation. 4939 4940 Previous Release: 4941 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4942 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4943 Current Release: 4944 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4945 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4946 4947 49482) iASL Compiler/Disassembler: 4949 4950Implemented the new ACPI 3.0 resource template macros - DWordSpace, 4951ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 4952Includes support in the disassembler. 4953 4954Implemented support for the new (ACPI 3.0) parameter to the Register macro, 4955AccessSize. 4956 4957Fixed a problem where the _HE resource name for the Interrupt macro was 4958referencing bit 0 instead of bit 1. 4959 4960Implemented check for maximum 255 interrupts in the Interrupt macro. 4961 4962Fixed a problem with the predefined resource descriptor names where 4963incorrect AML code was generated if the offset within the resource buffer 4964was 0 or 1. The optimizer shortened the AML code to a single byte opcode 4965but did not update the surrounding package lengths. 4966 4967Changes to the Dma macro: All channels within the channel list must be in 4968the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 4969optional (default is BusMaster). 4970 4971Implemented check for maximum 7 data bytes for the VendorShort macro. 4972 4973The ReadWrite parameter is now optional for the Memory32 and similar macros. 4974 4975---------------------------------------- 497603 December 2004. Summary of changes for version 20041203: 4977 49781) ACPI CA Core Subsystem: 4979 4980The low-level field insertion/extraction code (exfldio) has been completely 4981rewritten to eliminate unnecessary complexity, bugs, and boundary 4982conditions. 4983 4984Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 4985operators where the input operand could be inadvertently deleted if no 4986conversion was necessary (e.g., if the input to ToInteger was an Integer 4987object.) 4988 4989Fixed a problem with the ToDecimalString and ToHexString where an incorrect 4990exception code was returned if the resulting string would be > 200 chars. 4991AE_STRING_LIMIT is now returned. 4992 4993Fixed a problem with the Concatenate operator where AE_OK was always 4994returned, even if the operation failed. 4995 4996Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 4997semaphores to be allocated. 4998 4999Code and Data Size: Current and previous core subsystem library sizes are 5000shown below. These are the code and data sizes for the acpica.lib produced 5001by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5002any ACPI driver or OSPM code. The debug version of the code includes the 5003debug output trace mechanism and has a much larger code and data size. Note 5004that these values will vary depending on the efficiency of the compiler and 5005the compiler options used during generation. 5006 5007 Previous Release: 5008 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5009 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5010 Current Release: 5011 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5012 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5013 5014 50152) iASL Compiler/Disassembler: 5016 5017Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5018recently introduced in 20041119. 5019 5020Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5021byte was inadvertently set to zero. 5022 5023---------------------------------------- 502419 November 2004. Summary of changes for version 20041119: 5025 50261) ACPI CA Core Subsystem: 5027 5028Fixed a problem in the internal ConvertToInteger routine where new integers 5029were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5030buffers and strings to integers. 5031 5032Implemented support to store a value to an Index() on a String object. This 5033is an ACPI 2.0 feature that had not yet been implemented. 5034 5035Implemented new behavior for storing objects to individual package elements 5036(via the Index() operator). The previous behavior was to invoke the implicit 5037conversion rules if an object was already present at the index. The new 5038behavior is to simply delete any existing object and directly store the new 5039object. Although the ACPI specification seems unclear on this subject, other 5040ACPI implementations behave in this manner. (This is the root of the 5041AE_BAD_HEX_CONSTANT issue.) 5042 5043Modified the RSDP memory scan mechanism to support the extended checksum for 5044ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5045RSDP signature is found with a valid checksum. 5046 5047Code and Data Size: Current and previous core subsystem library sizes are 5048shown below. These are the code and data sizes for the acpica.lib produced 5049by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5050any ACPI driver or OSPM code. The debug version of the code includes the 5051debug output trace mechanism and has a much larger code and data size. Note 5052that these values will vary depending on the efficiency of the compiler and 5053the compiler options used during generation. 5054 5055 Previous Release: 5056 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5057 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5058 Current Release: 5059 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5060 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5061 5062 50632) iASL Compiler/Disassembler: 5064 5065Fixed a missing semicolon in the aslcompiler.y file. 5066 5067---------------------------------------- 506805 November 2004. Summary of changes for version 20041105: 5069 50701) ACPI CA Core Subsystem: 5071 5072Implemented support for FADT revision 2. This was an interim table (between 5073ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5074 5075Implemented optional support to allow uninitialized LocalX and ArgX 5076variables in a control method. The variables are initialized to an Integer 5077object with a value of zero. This support is enabled by setting the 5078AcpiGbl_EnableInterpreterSlack flag to TRUE. 5079 5080Implemented support for Integer objects for the SizeOf operator. Either 4 5081or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5082depending on the parent table revision). 5083 5084Fixed a problem in the implementation of the SizeOf and ObjectType operators 5085where the operand was resolved to a value too early, causing incorrect 5086return values for some objects. 5087 5088Fixed some possible memory leaks during exceptional conditions. 5089 5090Code and Data Size: Current and previous core subsystem library sizes are 5091shown below. These are the code and data sizes for the acpica.lib produced 5092by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5093any ACPI driver or OSPM code. The debug version of the code includes the 5094debug output trace mechanism and has a much larger code and data size. Note 5095that these values will vary depending on the efficiency of the compiler and 5096the compiler options used during generation. 5097 5098 Previous Release: 5099 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5100 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5101 Current Release: 5102 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5103 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5104 5105 51062) iASL Compiler/Disassembler: 5107 5108Implemented support for all ACPI 3.0 reserved names and methods. 5109 5110Implemented all ACPI 3.0 grammar elements in the front-end, including 5111support for semicolons. 5112 5113Implemented the ACPI 3.0 Function() and ToUUID() macros 5114 5115Fixed a problem in the disassembler where a Scope() operator would not be 5116emitted properly if the target of the scope was in another table. 5117 5118---------------------------------------- 511915 October 2004. Summary of changes for version 20041015: 5120 5121Note: ACPI CA is currently undergoing an in-depth and complete formal 5122evaluation to test/verify the following areas. Other suggestions are 5123welcome. This will result in an increase in the frequency of releases and 5124the number of bug fixes in the next few months. 5125 - Functional tests for all ASL/AML operators 5126 - All implicit/explicit type conversions 5127 - Bit fields and operation regions 5128 - 64-bit math support and 32-bit-only "truncated" math support 5129 - Exceptional conditions, both compiler and interpreter 5130 - Dynamic object deletion and memory leaks 5131 - ACPI 3.0 support when implemented 5132 - External interfaces to the ACPI subsystem 5133 5134 51351) ACPI CA Core Subsystem: 5136 5137Fixed two alignment issues on 64-bit platforms - within debug statements in 5138AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5139field within the non-aligned ACPI generic address structure. 5140 5141Fixed a problem in the Increment and Decrement operators where incorrect 5142operand resolution could result in the inadvertent modification of the 5143original integer when the integer is passed into another method as an 5144argument and the arg is then incremented/decremented. 5145 5146Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5147BCD number were truncated during conversion. 5148 5149Fixed a problem in the ToDecimal operator where the length of the resulting 5150string could be set incorrectly too long if the input operand was a Buffer 5151object. 5152 5153Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5154within a buffer would prematurely terminate a compare between buffer 5155objects. 5156 5157Added a check for string overflow (>200 characters as per the ACPI 5158specification) during the Concatenate operator with two string operands. 5159 5160Code and Data Size: Current and previous core subsystem library sizes are 5161shown below. These are the code and data sizes for the acpica.lib produced 5162by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5163any ACPI driver or OSPM code. The debug version of the code includes the 5164debug output trace mechanism and has a much larger code and data size. Note 5165that these values will vary depending on the efficiency of the compiler and 5166the compiler options used during generation. 5167 5168 Previous Release: 5169 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5170 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5171 Current Release: 5172 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5173 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5174 5175 5176 51772) iASL Compiler/Disassembler: 5178 5179Allow the use of the ObjectType operator on uninitialized Locals and Args 5180(returns 0 as per the ACPI specification). 5181 5182Fixed a problem where the compiler would fault if there was a syntax error 5183in the FieldName of all of the various CreateXXXField operators. 5184 5185Disallow the use of lower case letters within the EISAID macro, as per the 5186ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5187U is an uppercase letter and N is a hex digit. 5188 5189 5190---------------------------------------- 519106 October 2004. Summary of changes for version 20041006: 5192 51931) ACPI CA Core Subsystem: 5194 5195Implemented support for the ACPI 3.0 Timer operator. This ASL function 5196implements a 64-bit timer with 100 nanosecond granularity. 5197 5198Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5199implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5200the timer with the best clock available. Also, it keeps the core subsystem 5201out of the clock handling business, since the host OS (usually) performs 5202this function. 5203 5204Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5205functions use a 64-bit address which is part of the packed ACPI Generic 5206Address Structure. Since the structure is non-aligned, the alignment macros 5207are now used to extract the address to a local variable before use. 5208 5209Fixed a problem where the ToInteger operator assumed all input strings were 5210hexadecimal. The operator now handles both decimal strings and hex strings 5211(prefixed with "0x"). 5212 5213Fixed a problem where the string length in the string object created as a 5214result of the internal ConvertToString procedure could be incorrect. This 5215potentially affected all implicit conversions and also the ToDecimalString 5216and ToHexString operators. 5217 5218Fixed two problems in the ToString operator. If the length parameter was 5219zero, an incorrect string object was created and the value of the input 5220length parameter was inadvertently changed from zero to Ones. 5221 5222Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5223resource macro was ignored. 5224 5225Simplified the interfaces to the internal division functions, reducing code 5226size and complexity. 5227 5228Code and Data Size: Current and previous core subsystem library sizes are 5229shown below. These are the code and data sizes for the acpica.lib produced 5230by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5231any ACPI driver or OSPM code. The debug version of the code includes the 5232debug output trace mechanism and has a much larger code and data size. Note 5233that these values will vary depending on the efficiency of the compiler and 5234the compiler options used during generation. 5235 5236 Previous Release: 5237 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5238 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5239 Current Release: 5240 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5241 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5242 5243 52442) iASL Compiler/Disassembler: 5245 5246Implemented support for the ACPI 3.0 Timer operator. 5247 5248Fixed a problem where the Default() operator was inadvertently ignored in a 5249Switch/Case block. This was a problem in the translation of the Switch 5250statement to If...Else pairs. 5251 5252Added support to allow a standalone Return operator, with no parentheses (or 5253operands). 5254 5255Fixed a problem with code generation for the ElseIf operator where the 5256translated Else...If parse tree was improperly constructed leading to the 5257loss of some code. 5258 5259---------------------------------------- 526022 September 2004. Summary of changes for version 20040922: 5261 52621) ACPI CA Core Subsystem: 5263 5264Fixed a problem with the implementation of the LNot() operator where "Ones" 5265was not returned for the TRUE case. Changed the code to return Ones instead 5266of (!Arg) which was usually 1. This change affects iASL constant folding for 5267this operator also. 5268 5269Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5270initialized properly -- Now zero the entire buffer in this case where the 5271buffer already exists. 5272 5273Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5274Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5275related code considerably. This will require changes/updates to all OS 5276interface layers (OSLs.) 5277 5278Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5279a system exception handler to be installed. This handler is invoked upon any 5280run-time exception that occurs during control method execution. 5281 5282Added support for the DSDT in AcpiTbFindTable. This allows the 5283DataTableRegion() operator to access the local copy of the DSDT. 5284 5285Code and Data Size: Current and previous core subsystem library sizes are 5286shown below. These are the code and data sizes for the acpica.lib produced 5287by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5288any ACPI driver or OSPM code. The debug version of the code includes the 5289debug output trace mechanism and has a much larger code and data size. Note 5290that these values will vary depending on the efficiency of the compiler and 5291the compiler options used during generation. 5292 5293 Previous Release: 5294 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5295 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5296 Current Release: 5297 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5298 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5299 5300 53012) iASL Compiler/Disassembler: 5302 5303Fixed a problem with constant folding and the LNot operator. LNot was 5304returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5305could result in the generation of an incorrect folded/reduced constant. 5306 5307End-Of-File is now allowed within a "//"-style comment. A parse error no 5308longer occurs if such a comment is at the very end of the input ASL source 5309file. 5310 5311Implemented the "-r" option to override the Revision in the table header. 5312The initial use of this option will be to simplify the evaluation of the AML 5313interpreter by allowing a single ASL source module to be compiled for either 531432-bit or 64-bit integers. 5315 5316 5317---------------------------------------- 531827 August 2004. Summary of changes for version 20040827: 5319 53201) ACPI CA Core Subsystem: 5321 5322- Implemented support for implicit object conversion in the non-numeric 5323logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5324LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5325the second operand is implicitly converted on the fly to match the type of 5326the first operand. For example: 5327 5328 LEqual (Source1, Source2) 5329 5330Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5331The data type of Source1 dictates the required type of Source2. Source2 is 5332implicitly converted if necessary to match the type of Source1. 5333 5334- Updated and corrected the behavior of the string conversion support. The 5335rules concerning conversion of buffers to strings (according to the ACPI 5336specification) are as follows: 5337 5338ToDecimalString - explicit byte-wise conversion of buffer to string of 5339decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5340conversion of buffer to string of hex values (0-FF) separated by commas. 5341ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5342copy with no transform except NULL terminated. Any other implicit buffer-to- 5343string conversion - byte-wise conversion of buffer to string of hex values 5344(0-FF) separated by spaces. 5345 5346- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5347 5348- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5349one byte too short in the case of a node in the root scope. This could 5350cause a fault during debug output. 5351 5352- Code and Data Size: Current and previous core subsystem library sizes are 5353shown below. These are the code and data sizes for the acpica.lib produced 5354by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5355any ACPI driver or OSPM code. The debug version of the code includes the 5356debug output trace mechanism and has a much larger code and data size. Note 5357that these values will vary depending on the efficiency of the compiler and 5358the compiler options used during generation. 5359 5360 Previous Release: 5361 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5362 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5363 Current Release: 5364 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5365 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5366 5367 53682) iASL Compiler/Disassembler: 5369 5370- Fixed a Linux generation error. 5371 5372 5373---------------------------------------- 537416 August 2004. Summary of changes for version 20040816: 5375 53761) ACPI CA Core Subsystem: 5377 5378Designed and implemented support within the AML interpreter for the so- 5379called "implicit return". This support returns the result of the last ASL 5380operation within a control method, in the absence of an explicit Return() 5381operator. A few machines depend on this behavior, even though it is not 5382explicitly supported by the ASL language. It is optional support that can 5383be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5384 5385Removed support for the PCI_Config address space from the internal low level 5386hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5387support was not used internally, and would not work correctly anyway because 5388the PCI bus number and segment number were not supported. There are 5389separate interfaces for PCI configuration space access because of the unique 5390interface. 5391 5392Code and Data Size: Current and previous core subsystem library sizes are 5393shown below. These are the code and data sizes for the acpica.lib produced 5394by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5395any ACPI driver or OSPM code. The debug version of the code includes the 5396debug output trace mechanism and has a much larger code and data size. Note 5397that these values will vary depending on the efficiency of the compiler and 5398the compiler options used during generation. 5399 5400 Previous Release: 5401 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5402 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5403 Current Release: 5404 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5405 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5406 5407 54082) iASL Compiler/Disassembler: 5409 5410Fixed a problem where constants in ASL expressions at the root level (not 5411within a control method) could be inadvertently truncated during code 5412generation. This problem was introduced in the 20040715 release. 5413 5414 5415---------------------------------------- 541615 July 2004. Summary of changes for version 20040715: 5417 54181) ACPI CA Core Subsystem: 5419 5420Restructured the internal HW GPE interfaces to pass/track the current state 5421of interrupts (enabled/disabled) in order to avoid possible deadlock and 5422increase flexibility of the interfaces. 5423 5424Implemented a "lexicographical compare" for String and Buffer objects within 5425the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5426as per further clarification to the ACPI specification. Behavior is similar 5427to C library "strcmp". 5428 5429Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5430external function. In the 32-bit non-debug case, the stack use has been 5431reduced from 168 bytes to 32 bytes. 5432 5433Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5434whose purpose is to allow the AML interpreter to forgive certain bad AML 5435constructs. Default setting is FALSE. 5436 5437Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5438support code. If enabled, it allows field access to go beyond the end of a 5439region definition if the field is within the region length rounded up to the 5440next access width boundary (a common coding error.) 5441 5442Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5443ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5444symbols are lowercased by the latest version of the AcpiSrc tool. 5445 5446The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5447rename "Register" to simply "Reg" to prevent certain compilers from 5448complaining. 5449 5450Code and Data Size: Current and previous core subsystem library sizes are 5451shown below. These are the code and data sizes for the acpica.lib produced 5452by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5453any ACPI driver or OSPM code. The debug version of the code includes the 5454debug output trace mechanism and has a much larger code and data size. Note 5455that these values will vary depending on the efficiency of the compiler and 5456the compiler options used during generation. 5457 5458 Previous Release: 5459 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5460 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5461 Current Release: 5462 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5463 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5464 5465 54662) iASL Compiler/Disassembler: 5467 5468Implemented full support for Package objects within the Case() operator. 5469Note: The Break() operator is currently not supported within Case blocks 5470(TermLists) as there is some question about backward compatibility with ACPI 54711.0 interpreters. 5472 5473 5474Fixed a problem where complex terms were not supported properly within the 5475Switch() operator. 5476 5477Eliminated extraneous warning for compiler-emitted reserved names of the 5478form "_T_x". (Used in Switch/Case operators.) 5479 5480Eliminated optimization messages for "_T_x" objects and small constants 5481within the DefinitionBlock operator. 5482 5483 5484---------------------------------------- 548515 June 2004. Summary of changes for version 20040615: 5486 54871) ACPI CA Core Subsystem: 5488 5489Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5490following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5491LLessEqual. 5492 5493All directory names in the entire source package are lower case, as they 5494were in earlier releases. 5495 5496Implemented "Disassemble" command in the AML debugger that will disassemble 5497a single control method. 5498 5499Code and Data Size: Current and previous core subsystem library sizes are 5500shown below. These are the code and data sizes for the acpica.lib produced 5501by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5502any ACPI driver or OSPM code. The debug version of the code includes the 5503debug output trace mechanism and has a much larger code and data size. Note 5504that these values will vary depending on the efficiency of the compiler and 5505the compiler options used during generation. 5506 5507 Previous Release: 5508 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5509 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5510 5511 Current Release: 5512 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5513 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5514 5515 55162) iASL Compiler/Disassembler: 5517 5518Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5519following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5520LLessEqual. 5521 5522All directory names in the entire source package are lower case, as they 5523were in earlier releases. 5524 5525Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5526not found. 5527 5528Fixed an issue with the Windows version of the compiler where later versions 5529of Windows place the FADT in the registry under the name "FADT" and not 5530"FACP" as earlier versions did. This applies when using the -g or - 5531d<nofilename> options. The compiler now looks for both strings as 5532necessary. 5533 5534Fixed a problem with compiler namepath optimization where a namepath within 5535the Scope() operator could not be optimized if the namepath was a subpath of 5536the current scope path. 5537 5538---------------------------------------- 553927 May 2004. Summary of changes for version 20040527: 5540 55411) ACPI CA Core Subsystem: 5542 5543Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5544support in the RSDP scan code. The original code improperly scanned for the 5545EBDA by simply scanning from memory location 0 to 0x400. The correct method 5546is to first obtain the EBDA pointer from within the BIOS data area, then 5547scan 1K of memory starting at the EBDA pointer. There appear to be few if 5548any machines that place the RSDP in the EBDA, however. 5549 5550Integrated a fix for a possible fault during evaluation of BufferField 5551arguments. Obsolete code that was causing the problem was removed. 5552 5553Found and fixed a problem in the Field Support Code where data could be 5554corrupted on a bit field read that starts on an aligned boundary but does 5555not end on an aligned boundary. Merged the read/write "datum length" 5556calculation code into a common procedure. 5557 5558Rolled in a couple of changes to the FreeBSD-specific header. 5559 5560 5561Code and Data Size: Current and previous core subsystem library sizes are 5562shown below. These are the code and data sizes for the acpica.lib produced 5563by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5564any ACPI driver or OSPM code. The debug version of the code includes the 5565debug output trace mechanism and has a much larger code and data size. Note 5566that these values will vary depending on the efficiency of the compiler and 5567the compiler options used during generation. 5568 5569 Previous Release: 5570 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5571 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5572 Current Release: 5573 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5574 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5575 5576 55772) iASL Compiler/Disassembler: 5578 5579Fixed a generation warning produced by some overly-verbose compilers for a 558064-bit constant. 5581 5582---------------------------------------- 558314 May 2004. Summary of changes for version 20040514: 5584 55851) ACPI CA Core Subsystem: 5586 5587Fixed a problem where hardware GPE enable bits sometimes not set properly 5588during and after GPE method execution. Result of 04/27 changes. 5589 5590Removed extra "clear all GPEs" when sleeping/waking. 5591 5592Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5593AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5594the new AcpiEv* calls as appropriate. 5595 5596ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5597now "Microsoft Windows NT" for maximum compatibility. However this can be 5598changed by modifying the acconfig.h file. 5599 5600Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5601traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5602 5603Run _INI methods on ThermalZone objects. This is against the ACPI 5604specification, but there is apparently ASL code in the field that has these 5605_INI methods, and apparently "other" AML interpreters execute them. 5606 5607Performed a full 16/32/64 bit lint that resulted in some small changes. 5608 5609Added a sleep simulation command to the AML debugger to test sleep code. 5610 5611Code and Data Size: Current and previous core subsystem library sizes are 5612shown below. These are the code and data sizes for the acpica.lib produced 5613by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5614any ACPI driver or OSPM code. The debug version of the code includes the 5615debug output trace mechanism and has a much larger code and data size. Note 5616that these values will vary depending on the efficiency of the compiler and 5617the compiler options used during generation. 5618 5619 Previous Release: 5620 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5621 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5622 Current Release: 5623 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5624 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5625 5626---------------------------------------- 562727 April 2004. Summary of changes for version 20040427: 5628 56291) ACPI CA Core Subsystem: 5630 5631Completed a major overhaul of the GPE handling within ACPI CA. There are 5632now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5633The only GPEs allowed to be combination wake/run are for button-style 5634devices such as a control-method power button, control-method sleep button, 5635or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5636referenced by any _PRW methods are marked for "runtime" and hardware 5637enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5638(and disabled at runtime). However, at sleep time, only those GPEs that 5639have been specifically enabled for wake via the AcpiEnableGpe interface will 5640actually be hardware enabled. 5641 5642A new external interface has been added, AcpiSetGpeType(), that is meant to 5643be used by device drivers to force a GPE to a particular type. It will be 5644especially useful for the drivers for the button devices mentioned above. 5645 5646Completed restructuring of the ACPI CA initialization sequence so that 5647default operation region handlers are installed before GPEs are initialized 5648and the _PRW methods are executed. This will prevent errors when the _PRW 5649methods attempt to access system memory or I/O space. 5650 5651GPE enable/disable no longer reads the GPE enable register. We now keep the 5652enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5653thus no longer depend on the hardware to maintain these bits. 5654 5655Always clear the wake status and fixed/GPE status bits before sleep, even 5656for state S5. 5657 5658Improved the AML debugger output for displaying the GPE blocks and their 5659current status. 5660 5661Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5662x = 0,1,2,3,4. 5663 5664Fixed a problem where the physical address was incorrectly calculated when 5665the Load() operator was used to directly load from an Operation Region (vs. 5666loading from a Field object.) Also added check for minimum table length for 5667this case. 5668 5669Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5670mutex release. 5671 5672Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5673consistency with the other fields returned. 5674 5675Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5676structure for each GPE in the system, so the size of this structure is 5677important. 5678 5679CPU stack requirement reduction: Cleaned up the method execution and object 5680evaluation paths so that now a parameter structure is passed, instead of 5681copying the various method parameters over and over again. 5682 5683In evregion.c: Correctly exit and reenter the interpreter region if and 5684only if dispatching an operation region request to a user-installed handler. 5685Do not exit/reenter when dispatching to a default handler (e.g., default 5686system memory or I/O handlers) 5687 5688 5689Notes for updating drivers for the new GPE support. The following changes 5690must be made to ACPI-related device drivers that are attached to one or more 5691GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5692 56931) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5694explicitly call AcpiEnableGpe. 56952) There is a new interface called AcpiSetGpeType. This should be called 5696before enabling the GPE. Also, this interface will automatically disable 5697the GPE if it is currently enabled. 56983) AcpiEnableGpe no longer supports a GPE type flag. 5699 5700Specific drivers that must be changed: 57011) EC driver: 5702 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5703AeGpeHandler, NULL); 5704 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5705 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5706 57072) Button Drivers (Power, Lid, Sleep): 5708Run _PRW method under parent device 5709If _PRW exists: /* This is a control-method button */ 5710 Extract GPE number and possibly GpeDevice 5711 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5712 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5713 5714For all other devices that have _PRWs, we automatically set the GPE type to 5715ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5716must be done on a selective basis, usually requiring some kind of user app 5717to allow the user to pick the wake devices. 5718 5719 5720Code and Data Size: Current and previous core subsystem library sizes are 5721shown below. These are the code and data sizes for the acpica.lib produced 5722by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5723any ACPI driver or OSPM code. The debug version of the code includes the 5724debug output trace mechanism and has a much larger code and data size. Note 5725that these values will vary depending on the efficiency of the compiler and 5726the compiler options used during generation. 5727 5728 Previous Release: 5729 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5730 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5731 Current Release: 5732 5733 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5734 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5735 5736 5737 5738---------------------------------------- 573902 April 2004. Summary of changes for version 20040402: 5740 57411) ACPI CA Core Subsystem: 5742 5743Fixed an interpreter problem where an indirect store through an ArgX 5744parameter was incorrectly applying the "implicit conversion rules" during 5745the store. From the ACPI specification: "If the target is a method local or 5746argument (LocalX or ArgX), no conversion is performed and the result is 5747stored directly to the target". The new behavior is to disable implicit 5748conversion during ALL stores to an ArgX. 5749 5750Changed the behavior of the _PRW method scan to ignore any and all errors 5751returned by a given _PRW. This prevents the scan from aborting from the 5752failure of any single _PRW. 5753 5754Moved the runtime configuration parameters from the global init procedure to 5755static variables in acglobal.h. This will allow the host to override the 5756default values easily. 5757 5758Code and Data Size: Current and previous core subsystem library sizes are 5759shown below. These are the code and data sizes for the acpica.lib produced 5760by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5761any ACPI driver or OSPM code. The debug version of the code includes the 5762debug output trace mechanism and has a much larger code and data size. Note 5763that these values will vary depending on the efficiency of the compiler and 5764the compiler options used during generation. 5765 5766 Previous Release: 5767 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5768 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5769 Current Release: 5770 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5771 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5772 5773 57742) iASL Compiler/Disassembler: 5775 5776iASL now fully disassembles SSDTs. However, External() statements are not 5777generated automatically for unresolved symbols at this time. This is a 5778planned feature for future implementation. 5779 5780Fixed a scoping problem in the disassembler that occurs when the type of the 5781target of a Scope() operator is overridden. This problem caused an 5782incorrectly nested internal namespace to be constructed. 5783 5784Any warnings or errors that are emitted during disassembly are now commented 5785out automatically so that the resulting file can be recompiled without any 5786hand editing. 5787 5788---------------------------------------- 578926 March 2004. Summary of changes for version 20040326: 5790 57911) ACPI CA Core Subsystem: 5792 5793Implemented support for "wake" GPEs via interaction between GPEs and the 5794_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5795identified as a WAKE GPE and by default will no longer be enabled at 5796runtime. Previously, we were blindly enabling all GPEs with a corresponding 5797_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5798believe this has been the cause of thousands of "spurious" GPEs on some 5799systems. 5800 5801This new GPE behavior is can be reverted to the original behavior (enable 5802ALL GPEs at runtime) via a runtime flag. 5803 5804Fixed a problem where aliased control methods could not access objects 5805properly. The proper scope within the namespace was not initialized 5806(transferred to the target of the aliased method) before executing the 5807target method. 5808 5809Fixed a potential race condition on internal object deletion on the return 5810object in AcpiEvaluateObject. 5811 5812Integrated a fix for resource descriptors where both _MEM and _MTP were 5813being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5814wide, 0x0F instead of 0x03.) 5815 5816Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5817fault in some cases. 5818 5819Updated Notify() values for debug statements in evmisc.c 5820 5821Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5822 5823Code and Data Size: Current and previous core subsystem library sizes are 5824shown below. These are the code and data sizes for the acpica.lib produced 5825by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5826any ACPI driver or OSPM code. The debug version of the code includes the 5827debug output trace mechanism and has a much larger code and data size. Note 5828that these values will vary depending on the efficiency of the compiler and 5829the compiler options used during generation. 5830 5831 Previous Release: 5832 5833 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5834 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5835 Current Release: 5836 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5837 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5838 5839---------------------------------------- 584011 March 2004. Summary of changes for version 20040311: 5841 58421) ACPI CA Core Subsystem: 5843 5844Fixed a problem where errors occurring during the parse phase of control 5845method execution did not abort cleanly. For example, objects created and 5846installed in the namespace were not deleted. This caused all subsequent 5847invocations of the method to return the AE_ALREADY_EXISTS exception. 5848 5849Implemented a mechanism to force a control method to "Serialized" execution 5850if the method attempts to create namespace objects. (The root of the 5851AE_ALREADY_EXISTS problem.) 5852 5853Implemented support for the predefined _OSI "internal" control method. 5854Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5855"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5856This feature will allow "other" operating systems to execute the fully 5857tested, "Windows" code path through the ASL code 5858 5859Global Lock Support: Now allows multiple acquires and releases with any 5860internal thread. Removed concept of "owning thread" for this special mutex. 5861 5862Fixed two functions that were inappropriately declaring large objects on the 5863CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5864method execution considerably. 5865 5866Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5867S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5868 5869Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5870defined on the machine. 5871 5872Implemented two runtime options: One to force all control method execution 5873to "Serialized" to mimic Windows behavior, another to disable _OSI support 5874if it causes problems on a given machine. 5875 5876Code and Data Size: Current and previous core subsystem library sizes are 5877shown below. These are the code and data sizes for the acpica.lib produced 5878by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5879any ACPI driver or OSPM code. The debug version of the code includes the 5880debug output trace mechanism and has a much larger code and data size. Note 5881that these values will vary depending on the efficiency of the compiler and 5882the compiler options used during generation. 5883 5884 Previous Release: 5885 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5886 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5887 Current Release: 5888 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5889 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5890 58912) iASL Compiler/Disassembler: 5892 5893Fixed an array size problem for FreeBSD that would cause the compiler to 5894fault. 5895 5896---------------------------------------- 589720 February 2004. Summary of changes for version 20040220: 5898 5899 59001) ACPI CA Core Subsystem: 5901 5902Implemented execution of _SxD methods for Device objects in the 5903GetObjectInfo interface. 5904 5905Fixed calls to _SST method to pass the correct arguments. 5906 5907Added a call to _SST on wake to restore to "working" state. 5908 5909Check for End-Of-Buffer failure case in the WalkResources interface. 5910 5911Integrated fix for 64-bit alignment issue in acglobal.h by moving two 5912structures to the beginning of the file. 5913 5914After wake, clear GPE status register(s) before enabling GPEs. 5915 5916After wake, clear/enable power button. (Perhaps we should clear/enable all 5917fixed events upon wake.) 5918 5919Fixed a couple of possible memory leaks in the Namespace manager. 5920 5921Integrated latest acnetbsd.h file. 5922 5923---------------------------------------- 592411 February 2004. Summary of changes for version 20040211: 5925 5926 59271) ACPI CA Core Subsystem: 5928 5929Completed investigation and implementation of the call-by-reference 5930mechanism for control method arguments. 5931 5932Fixed a problem where a store of an object into an indexed package could 5933fail if the store occurs within a different method than the method that 5934created the package. 5935 5936Fixed a problem where the ToDecimal operator could return incorrect results. 5937 5938Fixed a problem where the CopyObject operator could fail on some of the more 5939obscure objects (e.g., Reference objects.) 5940 5941Improved the output of the Debug object to display buffer, package, and 5942index objects. 5943 5944Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 5945the expected result. 5946 5947Added permanent ACPI_REPORT_ERROR macros for all instances of the 5948ACPI_AML_INTERNAL exception. 5949 5950Integrated latest version of acfreebsd.h 5951 5952---------------------------------------- 595316 January 2004. Summary of changes for version 20040116: 5954 5955The purpose of this release is primarily to update the copyright years in 5956each module, thus causing a huge number of diffs. There are a few small 5957functional changes, however. 5958 59591) ACPI CA Core Subsystem: 5960 5961Improved error messages when there is a problem finding one or more of the 5962required base ACPI tables 5963 5964Reintroduced the definition of APIC_HEADER in actbl.h 5965 5966Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 5967 5968Removed extraneous reference to NewObj in dsmthdat.c 5969 59702) iASL compiler 5971 5972Fixed a problem introduced in December that disabled the correct disassembly 5973of Resource Templates 5974 5975 5976---------------------------------------- 597703 December 2003. Summary of changes for version 20031203: 5978 59791) ACPI CA Core Subsystem: 5980 5981Changed the initialization of Operation Regions during subsystem 5982init to perform two entire walks of the ACPI namespace; The first 5983to initialize the regions themselves, the second to execute the 5984_REG methods. This fixed some interdependencies across _REG 5985methods found on some machines. 5986 5987Fixed a problem where a Store(Local0, Local1) could simply update 5988the object reference count, and not create a new copy of the 5989object if the Local1 is uninitialized. 5990 5991Implemented support for the _SST reserved method during sleep 5992transitions. 5993 5994Implemented support to clear the SLP_TYP and SLP_EN bits when 5995waking up, this is apparently required by some machines. 5996 5997When sleeping, clear the wake status only if SleepState is not S5. 5998 5999Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6000pointer arithmetic advanced a string pointer too far. 6001 6002Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6003could be returned if the requested table has not been loaded. 6004 6005Within the support for IRQ resources, restructured the handling of 6006the active and edge/level bits. 6007 6008Fixed a few problems in AcpiPsxExecute() where memory could be 6009leaked under certain error conditions. 6010 6011Improved error messages for the cases where the ACPI mode could 6012not be entered. 6013 6014Code and Data Size: Current and previous core subsystem library 6015sizes are shown below. These are the code and data sizes for the 6016acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6017these values do not include any ACPI driver or OSPM code. The 6018debug version of the code includes the debug output trace 6019mechanism and has a much larger code and data size. Note that 6020these values will vary depending on the efficiency of the compiler 6021and the compiler options used during generation. 6022 6023 Previous Release (20031029): 6024 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6025 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6026 Current Release: 6027 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6028 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6029 60302) iASL Compiler/Disassembler: 6031 6032Implemented a fix for the iASL disassembler where a bad index was 6033generated. This was most noticeable on 64-bit platforms 6034 6035 6036---------------------------------------- 603729 October 2003. Summary of changes for version 20031029: 6038 60391) ACPI CA Core Subsystem: 6040 6041 6042Fixed a problem where a level-triggered GPE with an associated 6043_Lxx control method was incorrectly cleared twice. 6044 6045Fixed a problem with the Field support code where an access can 6046occur beyond the end-of-region if the field is non-aligned but 6047extends to the very end of the parent region (resulted in an 6048AE_AML_REGION_LIMIT exception.) 6049 6050Fixed a problem with ACPI Fixed Events where an RT Clock handler 6051would not get invoked on an RTC event. The RTC event bitmasks for 6052the PM1 registers were not being initialized properly. 6053 6054Implemented support for executing _STA and _INI methods for 6055Processor objects. Although this is currently not part of the 6056ACPI specification, there is existing ASL code that depends on the 6057init-time execution of these methods. 6058 6059Implemented and deployed a GetDescriptorName function to decode 6060the various types of internal descriptors. Guards against null 6061descriptors during debug output also. 6062 6063Implemented and deployed a GetNodeName function to extract the 4- 6064character namespace node name. This function simplifies the debug 6065and error output, as well as guarding against null pointers during 6066output. 6067 6068Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6069simplify the debug and error output of 64-bit integers. This 6070macro replaces the HIDWORD and LODWORD macros for dumping these 6071integers. 6072 6073Updated the implementation of the Stall() operator to only call 6074AcpiOsStall(), and also return an error if the operand is larger 6075than 255. This preserves the required behavior of not 6076relinquishing the processor, as would happen if AcpiOsSleep() was 6077called for "long stalls". 6078 6079Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6080initialized are now treated as NOOPs. 6081 6082Cleaned up a handful of warnings during 64-bit generation. 6083 6084Fixed a reported error where and incorrect GPE number was passed 6085to the GPE dispatch handler. This value is only used for error 6086output, however. Used this opportunity to clean up and streamline 6087the GPE dispatch code. 6088 6089Code and Data Size: Current and previous core subsystem library 6090sizes are shown below. These are the code and data sizes for the 6091acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6092these values do not include any ACPI driver or OSPM code. The 6093 6094debug version of the code includes the debug output trace 6095mechanism and has a much larger code and data size. Note that 6096these values will vary depending on the efficiency of the compiler 6097and the compiler options used during generation. 6098 6099 Previous Release (20031002): 6100 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6101 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6102 Current Release: 6103 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6104 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6105 6106 61072) iASL Compiler/Disassembler: 6108 6109Updated the iASL compiler to return an error if the operand to the 6110Stall() operator is larger than 255. 6111 6112 6113---------------------------------------- 611402 October 2003. Summary of changes for version 20031002: 6115 6116 61171) ACPI CA Core Subsystem: 6118 6119Fixed a problem with Index Fields where the index was not 6120incremented for fields that require multiple writes to the 6121index/data registers (Fields that are wider than the data 6122register.) 6123 6124Fixed a problem with all Field objects where a write could go 6125beyond the end-of-field if the field was larger than the access 6126granularity and therefore required multiple writes to complete the 6127request. An extra write beyond the end of the field could happen 6128inadvertently. 6129 6130Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6131would incorrectly be returned if the width of the Data Register 6132was larger than the specified field access width. 6133 6134Completed fixes for LoadTable() and Unload() and verified their 6135operation. Implemented full support for the "DdbHandle" object 6136throughout the ACPI CA subsystem. 6137 6138Implemented full support for the MADT and ECDT tables in the ACPI 6139CA header files. Even though these tables are not directly 6140consumed by ACPI CA, the header definitions are useful for ACPI 6141device drivers. 6142 6143Integrated resource descriptor fixes posted to the Linux ACPI 6144list. This included checks for minimum descriptor length, and 6145support for trailing NULL strings within descriptors that have 6146optional string elements. 6147 6148Code and Data Size: Current and previous core subsystem library 6149sizes are shown below. These are the code and data sizes for the 6150acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6151these values do not include any ACPI driver or OSPM code. The 6152debug version of the code includes the debug output trace 6153mechanism and has a much larger code and data size. Note that 6154these values will vary depending on the efficiency of the compiler 6155and the compiler options used during generation. 6156 6157 Previous Release (20030918): 6158 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6159 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6160 Current Release: 6161 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6162 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6163 6164 61652) iASL Compiler: 6166 6167Implemented detection of non-ASCII characters within the input 6168source ASL file. This catches attempts to compile binary (AML) 6169files early in the compile, with an informative error message. 6170 6171Fixed a problem where the disassembler would fault if the output 6172filename could not be generated or if the output file could not be 6173opened. 6174 6175---------------------------------------- 617618 September 2003. Summary of changes for version 20030918: 6177 6178 61791) ACPI CA Core Subsystem: 6180 6181Found and fixed a longstanding problem with the late execution of 6182the various deferred AML opcodes (such as Operation Regions, 6183Buffer Fields, Buffers, and Packages). If the name string 6184specified for the name of the new object placed the object in a 6185scope other than the current scope, the initialization/execution 6186of the opcode failed. The solution to this problem was to 6187implement a mechanism where the late execution of such opcodes 6188does not attempt to lookup/create the name a second time in an 6189incorrect scope. This fixes the "region size computed 6190incorrectly" problem. 6191 6192Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6193Global Lock AE_BAD_PARAMETER error. 6194 6195Fixed several 64-bit issues with prototypes, casting and data 6196types. 6197 6198Removed duplicate prototype from acdisasm.h 6199 6200Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6201 6202Code and Data Size: Current and previous core subsystem library 6203sizes are shown below. These are the code and data sizes for the 6204acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6205these values do not include any ACPI driver or OSPM code. The 6206debug version of the code includes the debug output trace 6207mechanism and has a much larger code and data size. Note that 6208these values will vary depending on the efficiency of the compiler 6209and the compiler options used during generation. 6210 6211 Previous Release: 6212 6213 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6214 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6215 Current Release: 6216 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6217 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6218 6219 62202) Linux: 6221 6222Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6223correct sleep time in seconds. 6224 6225---------------------------------------- 622614 July 2003. Summary of changes for version 20030619: 6227 62281) ACPI CA Core Subsystem: 6229 6230Parse SSDTs in order discovered, as opposed to reverse order 6231(Hrvoje Habjanic) 6232 6233Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6234Klausner, 6235 Nate Lawson) 6236 6237 62382) Linux: 6239 6240Dynamically allocate SDT list (suggested by Andi Kleen) 6241 6242proc function return value cleanups (Andi Kleen) 6243 6244Correctly handle NMI watchdog during long stalls (Andrew Morton) 6245 6246Make it so acpismp=force works (reported by Andrew Morton) 6247 6248 6249---------------------------------------- 625019 June 2003. Summary of changes for version 20030619: 6251 62521) ACPI CA Core Subsystem: 6253 6254Fix To/FromBCD, eliminating the need for an arch-specific #define. 6255 6256Do not acquire a semaphore in the S5 shutdown path. 6257 6258Fix ex_digits_needed for 0. (Takayoshi Kochi) 6259 6260Fix sleep/stall code reversal. (Andi Kleen) 6261 6262Revert a change having to do with control method calling 6263semantics. 6264 62652) Linux: 6266 6267acpiphp update (Takayoshi Kochi) 6268 6269Export acpi_disabled for sonypi (Stelian Pop) 6270 6271Mention acpismp=force in config help 6272 6273Re-add acpitable.c and acpismp=force. This improves backwards 6274 6275compatibility and also cleans up the code to a significant degree. 6276 6277Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6278 6279---------------------------------------- 628022 May 2003. Summary of changes for version 20030522: 6281 62821) ACPI CA Core Subsystem: 6283 6284Found and fixed a reported problem where an AE_NOT_FOUND error 6285occurred occasionally during _BST evaluation. This turned out to 6286be an Owner ID allocation issue where a called method did not get 6287a new ID assigned to it. Eventually, (after 64k calls), the Owner 6288ID UINT16 would wraparound so that the ID would be the same as the 6289caller's and the called method would delete the caller's 6290namespace. 6291 6292Implemented extended error reporting for control methods that are 6293aborted due to a run-time exception. Output includes the exact 6294AML instruction that caused the method abort, a dump of the method 6295locals and arguments at the time of the abort, and a trace of all 6296nested control method calls. 6297 6298Modified the interpreter to allow the creation of buffers of zero 6299length from the AML code. Implemented new code to ensure that no 6300attempt is made to actually allocate a memory buffer (of length 6301zero) - instead, a simple buffer object with a NULL buffer pointer 6302and length zero is created. A warning is no longer issued when 6303the AML attempts to create a zero-length buffer. 6304 6305Implemented a workaround for the "leading asterisk issue" in 6306_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6307asterisk is automatically removed if present in any HID, UID, or 6308CID strings. The iASL compiler will still flag this asterisk as 6309an error, however. 6310 6311Implemented full support for _CID methods that return a package of 6312multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6313now additionally returns a device _CID list if present. This 6314required a change to the external interface in order to pass an 6315ACPI_BUFFER object as a parameter since the _CID list is of 6316variable length. 6317 6318Fixed a problem with the new AE_SAME_HANDLER exception where 6319handler initialization code did not know about this exception. 6320 6321Code and Data Size: Current and previous core subsystem library 6322sizes are shown below. These are the code and data sizes for the 6323acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6324these values do not include any ACPI driver or OSPM code. The 6325debug version of the code includes the debug output trace 6326mechanism and has a much larger code and data size. Note that 6327these values will vary depending on the efficiency of the compiler 6328and the compiler options used during generation. 6329 6330 Previous Release (20030509): 6331 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6332 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6333 Current Release: 6334 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6335 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6336 6337 63382) Linux: 6339 6340Fixed a bug in which we would reinitialize the ACPI interrupt 6341after it was already working, thus disabling all ACPI and the IRQs 6342for any other device sharing the interrupt. (Thanks to Stian 6343Jordet) 6344 6345Toshiba driver update (John Belmonte) 6346 6347Return only 0 or 1 for our interrupt handler status (Andrew 6348Morton) 6349 6350 63513) iASL Compiler: 6352 6353Fixed a reported problem where multiple (nested) ElseIf() 6354statements were not handled correctly by the compiler, resulting 6355in incorrect warnings and incorrect AML code. This was a problem 6356in both the ASL parser and the code generator. 6357 6358 63594) Documentation: 6360 6361Added changes to existing interfaces, new exception codes, and new 6362text concerning reference count object management versus garbage 6363collection. 6364 6365---------------------------------------- 636609 May 2003. Summary of changes for version 20030509. 6367 6368 63691) ACPI CA Core Subsystem: 6370 6371Changed the subsystem initialization sequence to hold off 6372installation of address space handlers until the hardware has been 6373initialized and the system has entered ACPI mode. This is because 6374the installation of space handlers can cause _REG methods to be 6375run. Previously, the _REG methods could potentially be run before 6376ACPI mode was enabled. 6377 6378Fixed some memory leak issues related to address space handler and 6379notify handler installation. There were some problems with the 6380reference count mechanism caused by the fact that the handler 6381objects are shared across several namespace objects. 6382 6383Fixed a reported problem where reference counts within the 6384namespace were not properly updated when named objects created by 6385method execution were deleted. 6386 6387Fixed a reported problem where multiple SSDTs caused a deletion 6388issue during subsystem termination. Restructured the table data 6389structures to simplify the linked lists and the related code. 6390 6391Fixed a problem where the table ID associated with secondary 6392tables (SSDTs) was not being propagated into the namespace objects 6393created by those tables. This would only present a problem for 6394tables that are unloaded at run-time, however. 6395 6396Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6397type as the length parameter (instead of UINT32). 6398 6399Solved a long-standing problem where an ALREADY_EXISTS error 6400appears on various systems. This problem could happen when there 6401are multiple PCI_Config operation regions under a single PCI root 6402bus. This doesn't happen very frequently, but there are some 6403systems that do this in the ASL. 6404 6405Fixed a reported problem where the internal DeleteNode function 6406was incorrectly handling the case where a namespace node was the 6407first in the parent's child list, and had additional peers (not 6408the only child, but first in the list of children.) 6409 6410Code and Data Size: Current core subsystem library sizes are shown 6411below. These are the code and data sizes for the acpica.lib 6412produced by the Microsoft Visual C++ 6.0 compiler, and these 6413values do not include any ACPI driver or OSPM code. The debug 6414version of the code includes the debug output trace mechanism and 6415has a much larger code and data size. Note that these values will 6416vary depending on the efficiency of the compiler and the compiler 6417options used during generation. 6418 6419 Previous Release 6420 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6421 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6422 Current Release: 6423 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6424 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6425 6426 64272) Linux: 6428 6429Allow ":" in OS override string (Ducrot Bruno) 6430 6431Kobject fix (Greg KH) 6432 6433 64343 iASL Compiler/Disassembler: 6435 6436Fixed a problem in the generation of the C source code files (AML 6437is emitted in C source statements for BIOS inclusion) where the 6438Ascii dump that appears within a C comment at the end of each line 6439could cause a compile time error if the AML sequence happens to 6440have an open comment or close comment sequence embedded. 6441 6442 6443---------------------------------------- 644424 April 2003. Summary of changes for version 20030424. 6445 6446 64471) ACPI CA Core Subsystem: 6448 6449Support for big-endian systems has been implemented. Most of the 6450support has been invisibly added behind big-endian versions of the 6451ACPI_MOVE_* macros. 6452 6453Fixed a problem in AcpiHwDisableGpeBlock() and 6454AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6455low level hardware write routine. The offset parameter was 6456actually eliminated from the low level read/write routines because 6457they had become obsolete. 6458 6459Fixed a problem where a handler object was deleted twice during 6460the removal of a fixed event handler. 6461 6462 64632) Linux: 6464 6465A fix for SMP systems with link devices was contributed by 6466 6467Compaq's Dan Zink. 6468 6469(2.5) Return whether we handled the interrupt in our IRQ handler. 6470(Linux ISRs no longer return void, so we can propagate the handler 6471return value from the ACPI CA core back to the OS.) 6472 6473 6474 64753) Documentation: 6476 6477The ACPI CA Programmer Reference has been updated to reflect new 6478interfaces and changes to existing interfaces. 6479 6480---------------------------------------- 648128 March 2003. Summary of changes for version 20030328. 6482 64831) ACPI CA Core Subsystem: 6484 6485The GPE Block Device support has been completed. New interfaces 6486are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6487interfaces (enable, disable, clear, getstatus) have been split 6488into separate interfaces for Fixed Events and General Purpose 6489Events (GPEs) in order to support GPE Block Devices properly. 6490 6491Fixed a problem where the error message "Failed to acquire 6492semaphore" would appear during operations on the embedded 6493controller (EC). 6494 6495Code and Data Size: Current core subsystem library sizes are shown 6496below. These are the code and data sizes for the acpica.lib 6497produced by the Microsoft Visual C++ 6.0 compiler, and these 6498values do not include any ACPI driver or OSPM code. The debug 6499version of the code includes the debug output trace mechanism and 6500has a much larger code and data size. Note that these values will 6501vary depending on the efficiency of the compiler and the compiler 6502options used during generation. 6503 6504 Previous Release 6505 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6506 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6507 Current Release: 6508 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6509 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6510 6511 6512---------------------------------------- 651328 February 2003. Summary of changes for version 20030228. 6514 6515 65161) ACPI CA Core Subsystem: 6517 6518The GPE handling and dispatch code has been completely overhauled 6519in preparation for support of GPE Block Devices (ID ACPI0006). 6520This affects internal data structures and code only; there should 6521be no differences visible externally. One new file has been 6522added, evgpeblk.c 6523 6524The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6525fields that are used to determine the GPE block lengths. The 6526REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6527structures are ignored. This is per the ACPI specification but it 6528isn't very clear. The full 256 Block 0/1 GPEs are now supported 6529(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6530 6531In the SCI interrupt handler, removed the read of the PM1_CONTROL 6532register to look at the SCI_EN bit. On some machines, this read 6533causes an SMI event and greatly slows down SCI events. (This may 6534in fact be the cause of slow battery status response on some 6535systems.) 6536 6537Fixed a problem where a store of a NULL string to a package object 6538could cause the premature deletion of the object. This was seen 6539during execution of the battery _BIF method on some systems, 6540resulting in no battery data being returned. 6541 6542Added AcpiWalkResources interface to simplify parsing of resource 6543lists. 6544 6545Code and Data Size: Current core subsystem library sizes are shown 6546below. These are the code and data sizes for the acpica.lib 6547produced by the Microsoft Visual C++ 6.0 compiler, and these 6548values do not include any ACPI driver or OSPM code. The debug 6549version of the code includes the debug output trace mechanism and 6550has a much larger code and data size. Note that these values will 6551vary depending on the efficiency of the compiler and the compiler 6552options used during generation. 6553 6554 Previous Release 6555 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6556 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6557 Current Release: 6558 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6559 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6560 6561 65622) Linux 6563 6564S3 fixes (Ole Rohne) 6565 6566Update ACPI PHP driver with to use new acpi_walk_resource API 6567(Bjorn Helgaas) 6568 6569Add S4BIOS support (Pavel Machek) 6570 6571Map in entire table before performing checksum (John Stultz) 6572 6573Expand the mem= cmdline to allow the specification of reserved and 6574ACPI DATA blocks (Pavel Machek) 6575 6576Never use ACPI on VISWS 6577 6578Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6579 6580Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6581causing us to think that some systems support C2 when they really 6582don't. 6583 6584Do not count processor objects for non-present CPUs (Thanks to 6585Dominik Brodowski) 6586 6587 65883) iASL Compiler: 6589 6590Fixed a problem where ASL include files could not be found and 6591opened. 6592 6593Added support for the _PDC reserved name. 6594 6595 6596---------------------------------------- 659722 January 2003. Summary of changes for version 20030122. 6598 6599 66001) ACPI CA Core Subsystem: 6601 6602Added a check for constructs of the form: Store (Local0, Local0) 6603where Local0 is not initialized. Apparently, some BIOS 6604programmers believe that this is a NOOP. Since this store doesn't 6605do anything anyway, the new prototype behavior will ignore this 6606error. This is a case where we can relax the strict checking in 6607the interpreter in the name of compatibility. 6608 6609 66102) Linux 6611 6612The AcpiSrc Source Conversion Utility has been released with the 6613Linux package for the first time. This is the utility that is 6614used to convert the ACPI CA base source code to the Linux version. 6615 6616(Both) Handle P_BLK lengths shorter than 6 more gracefully 6617 6618(Both) Move more headers to include/acpi, and delete an unused 6619header. 6620 6621(Both) Move drivers/acpi/include directory to include/acpi 6622 6623(Both) Boot functions don't use cmdline, so don't pass it around 6624 6625(Both) Remove include of unused header (Adrian Bunk) 6626 6627(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6628the 6629former now also includes the latter, acpiphp.h only needs the one, 6630now. 6631 6632(2.5) Make it possible to select method of bios restoring after S3 6633resume. [=> no more ugly ifdefs] (Pavel Machek) 6634 6635(2.5) Make proc write interfaces work (Pavel Machek) 6636 6637(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6638 6639(2.5) Break out ACPI Perf code into its own module, under cpufreq 6640(Dominik Brodowski) 6641 6642(2.4) S4BIOS support (Ducrot Bruno) 6643 6644(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6645Visinoni) 6646 6647 66483) iASL Compiler: 6649 6650Added support to disassemble SSDT and PSDTs. 6651 6652Implemented support to obtain SSDTs from the Windows registry if 6653available. 6654 6655 6656---------------------------------------- 665709 January 2003. Summary of changes for version 20030109. 6658 66591) ACPI CA Core Subsystem: 6660 6661Changed the behavior of the internal Buffer-to-String conversion 6662function. The current ACPI specification states that the contents 6663of the buffer are "converted to a string of two-character 6664hexadecimal numbers, each separated by a space". Unfortunately, 6665this definition is not backwards compatible with existing ACPI 1.0 6666implementations (although the behavior was not defined in the ACPI 66671.0 specification). The new behavior simply copies data from the 6668buffer to the string until a null character is found or the end of 6669the buffer is reached. The new String object is always null 6670terminated. This problem was seen during the generation of _BIF 6671battery data where incorrect strings were returned for battery 6672type, etc. This will also require an errata to the ACPI 6673specification. 6674 6675Renamed all instances of NATIVE_UINT and NATIVE_INT to 6676ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6677 6678Copyright in all module headers (both Linux and non-Linux) has be 6679updated to 2003. 6680 6681Code and Data Size: Current core subsystem library sizes are shown 6682below. These are the code and data sizes for the acpica.lib 6683produced by the Microsoft Visual C++ 6.0 compiler, and these 6684values do not include any ACPI driver or OSPM code. The debug 6685version of the code includes the debug output trace mechanism and 6686has a much larger code and data size. Note that these values will 6687vary depending on the efficiency of the compiler and the compiler 6688options used during generation. 6689 6690 Previous Release 6691 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6692 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6693 Current Release: 6694 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6695 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6696 6697 66982) Linux 6699 6700Fixed an oops on module insertion/removal (Matthew Tippett) 6701 6702(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6703 6704(2.5) Replace pr_debug (Randy Dunlap) 6705 6706(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6707 6708(Both) Eliminate spawning of thread from timer callback, in favor 6709of schedule_work() 6710 6711(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6712 6713(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6714 6715(Both) Add missing statics to button.c (Pavel Machek) 6716 6717Several changes have been made to the source code translation 6718utility that generates the Linux Code in order to make the code 6719more "Linux-like": 6720 6721All typedefs on structs and unions have been removed in keeping 6722with the Linux coding style. 6723 6724Removed the non-Linux SourceSafe module revision number from each 6725module header. 6726 6727Completed major overhaul of symbols to be lowercased for linux. 6728Doubled the number of symbols that are lowercased. 6729 6730Fixed a problem where identifiers within procedure headers and 6731within quotes were not fully lower cased (they were left with a 6732starting capital.) 6733 6734Some C macros whose only purpose is to allow the generation of 16- 6735bit code are now completely removed in the Linux code, increasing 6736readability and maintainability. 6737 6738---------------------------------------- 6739 674012 December 2002. Summary of changes for version 20021212. 6741 6742 67431) ACPI CA Core Subsystem: 6744 6745Fixed a problem where the creation of a zero-length AML Buffer 6746would cause a fault. 6747 6748Fixed a problem where a Buffer object that pointed to a static AML 6749buffer (in an ACPI table) could inadvertently be deleted, causing 6750memory corruption. 6751 6752Fixed a problem where a user buffer (passed in to the external 6753ACPI CA interfaces) could be overwritten if the buffer was too 6754small to complete the operation, causing memory corruption. 6755 6756Fixed a problem in the Buffer-to-String conversion code where a 6757string of length one was always returned, regardless of the size 6758of the input Buffer object. 6759 6760Removed the NATIVE_CHAR data type across the entire source due to 6761lack of need and lack of consistent use. 6762 6763Code and Data Size: Current core subsystem library sizes are shown 6764below. These are the code and data sizes for the acpica.lib 6765produced by the Microsoft Visual C++ 6.0 compiler, and these 6766values do not include any ACPI driver or OSPM code. The debug 6767version of the code includes the debug output trace mechanism and 6768has a much larger code and data size. Note that these values will 6769vary depending on the efficiency of the compiler and the compiler 6770options used during generation. 6771 6772 Previous Release 6773 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6774 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6775 Current Release: 6776 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6777 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6778 6779 6780---------------------------------------- 678105 December 2002. Summary of changes for version 20021205. 6782 67831) ACPI CA Core Subsystem: 6784 6785Fixed a problem where a store to a String or Buffer object could 6786cause corruption of the DSDT if the object type being stored was 6787the same as the target object type and the length of the object 6788being stored was equal to or smaller than the original (existing) 6789target object. This was seen to cause corruption of battery _BIF 6790buffers if the _BIF method modified the buffer on the fly. 6791 6792Fixed a problem where an internal error was generated if a control 6793method invocation was used in an OperationRegion, Buffer, or 6794Package declaration. This was caused by the deferred parsing of 6795the control method and thus the deferred creation of the internal 6796method object. The solution to this problem was to create the 6797internal method object at the moment the method is encountered in 6798the first pass - so that subsequent references to the method will 6799able to obtain the required parameter count and thus properly 6800parse the method invocation. This problem presented itself as an 6801AE_AML_INTERNAL during the pass 1 parse phase during table load. 6802 6803Fixed a problem where the internal String object copy routine did 6804not always allocate sufficient memory for the target String object 6805and caused memory corruption. This problem was seen to cause 6806"Allocation already present in list!" errors as memory allocation 6807became corrupted. 6808 6809Implemented a new function for the evaluation of namespace objects 6810that allows the specification of the allowable return object 6811types. This simplifies a lot of code that checks for a return 6812object of one or more specific objects returned from the 6813evaluation (such as _STA, etc.) This may become and external 6814function if it would be useful to ACPI-related drivers. 6815 6816Completed another round of prefixing #defines with "ACPI_" for 6817clarity. 6818 6819Completed additional code restructuring to allow more modular 6820linking for iASL compiler and AcpiExec. Several files were split 6821creating new files. New files: nsparse.c dsinit.c evgpe.c 6822 6823Implemented an abort mechanism to terminate an executing control 6824method via the AML debugger. This feature is useful for debugging 6825control methods that depend (wait) for specific hardware 6826responses. 6827 6828Code and Data Size: Current core subsystem library sizes are shown 6829below. These are the code and data sizes for the acpica.lib 6830produced by the Microsoft Visual C++ 6.0 compiler, and these 6831values do not include any ACPI driver or OSPM code. The debug 6832version of the code includes the debug output trace mechanism and 6833has a much larger code and data size. Note that these values will 6834vary depending on the efficiency of the compiler and the compiler 6835options used during generation. 6836 6837 Previous Release 6838 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6839 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6840 Current Release: 6841 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6842 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6843 6844 68452) iASL Compiler/Disassembler 6846 6847Fixed a compiler code generation problem for "Interrupt" Resource 6848Descriptors. If specified in the ASL, the optional "Resource 6849Source Index" and "Resource Source" fields were not inserted into 6850the correct location within the AML resource descriptor, creating 6851an invalid descriptor. 6852 6853Fixed a disassembler problem for "Interrupt" resource descriptors. 6854The optional "Resource Source Index" and "Resource Source" fields 6855were ignored. 6856 6857 6858---------------------------------------- 685922 November 2002. Summary of changes for version 20021122. 6860 6861 68621) ACPI CA Core Subsystem: 6863 6864Fixed a reported problem where an object stored to a Method Local 6865or Arg was not copied to a new object during the store - the 6866object pointer was simply copied to the Local/Arg. This caused 6867all subsequent operations on the Local/Arg to also affect the 6868original source of the store operation. 6869 6870Fixed a problem where a store operation to a Method Local or Arg 6871was not completed properly if the Local/Arg contained a reference 6872(from RefOf) to a named field. The general-purpose store-to- 6873namespace-node code is now used so that this case is handled 6874automatically. 6875 6876Fixed a problem where the internal object copy routine would cause 6877a protection fault if the object being copied was a Package and 6878contained either 1) a NULL package element or 2) a nested sub- 6879package. 6880 6881Fixed a problem with the GPE initialization that resulted from an 6882ambiguity in the ACPI specification. One section of the 6883specification states that both the address and length of the GPE 6884block must be zero if the block is not supported. Another section 6885implies that only the address need be zero if the block is not 6886supported. The code has been changed so that both the address and 6887the length must be non-zero to indicate a valid GPE block (i.e., 6888if either the address or the length is zero, the GPE block is 6889invalid.) 6890 6891Code and Data Size: Current core subsystem library sizes are shown 6892below. These are the code and data sizes for the acpica.lib 6893produced by the Microsoft Visual C++ 6.0 compiler, and these 6894values do not include any ACPI driver or OSPM code. The debug 6895version of the code includes the debug output trace mechanism and 6896has a much larger code and data size. Note that these values will 6897vary depending on the efficiency of the compiler and the compiler 6898options used during generation. 6899 6900 Previous Release 6901 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6902 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6903 Current Release: 6904 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6905 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6906 6907 69082) Linux 6909 6910Cleaned up EC driver. Exported an external EC read/write 6911interface. By going through this, other drivers (most notably 6912sonypi) will be able to serialize access to the EC. 6913 6914 69153) iASL Compiler/Disassembler 6916 6917Implemented support to optionally generate include files for both 6918ASM and C (the -i switch). This simplifies BIOS development by 6919automatically creating include files that contain external 6920declarations for the symbols that are created within the 6921 6922(optionally generated) ASM and C AML source files. 6923 6924 6925---------------------------------------- 692615 November 2002. Summary of changes for version 20021115. 6927 69281) ACPI CA Core Subsystem: 6929 6930Fixed a memory leak problem where an error during resolution of 6931 6932method arguments during a method invocation from another method 6933failed to cleanup properly by deleting all successfully resolved 6934argument objects. 6935 6936Fixed a problem where the target of the Index() operator was not 6937correctly constructed if the source object was a package. This 6938problem has not been detected because the use of a target operand 6939with Index() is very rare. 6940 6941Fixed a problem with the Index() operator where an attempt was 6942made to delete the operand objects twice. 6943 6944Fixed a problem where an attempt was made to delete an operand 6945twice during execution of the CondRefOf() operator if the target 6946did not exist. 6947 6948Implemented the first of perhaps several internal create object 6949functions that create and initialize a specific object type. This 6950consolidates duplicated code wherever the object is created, thus 6951shrinking the size of the subsystem. 6952 6953Implemented improved debug/error messages for errors that occur 6954during nested method invocations. All executing method pathnames 6955are displayed (with the error) as the call stack is unwound - thus 6956simplifying debug. 6957 6958Fixed a problem introduced in the 10/02 release that caused 6959premature deletion of a buffer object if a buffer was used as an 6960ASL operand where an integer operand is required (Thus causing an 6961implicit object conversion from Buffer to Integer.) The change in 6962the 10/02 release was attempting to fix a memory leak (albeit 6963incorrectly.) 6964 6965Code and Data Size: Current core subsystem library sizes are shown 6966below. These are the code and data sizes for the acpica.lib 6967produced by the Microsoft Visual C++ 6.0 compiler, and these 6968values do not include any ACPI driver or OSPM code. The debug 6969version of the code includes the debug output trace mechanism and 6970has a much larger code and data size. Note that these values will 6971vary depending on the efficiency of the compiler and the compiler 6972options used during generation. 6973 6974 Previous Release 6975 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6976 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6977 Current Release: 6978 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6979 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6980 6981 69822) Linux 6983 6984Changed the implementation of the ACPI semaphores to use down() 6985instead of down_interruptable(). It is important that the 6986execution of ACPI control methods not be interrupted by signals. 6987Methods must run to completion, or the system may be left in an 6988unknown/unstable state. 6989 6990Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 6991(Shawn Starr) 6992 6993 69943) iASL Compiler/Disassembler 6995 6996 6997Changed the default location of output files. All output files 6998are now placed in the current directory by default instead of in 6999the directory of the source file. This change may affect some 7000existing makefiles, but it brings the behavior of the compiler in 7001line with other similar tools. The location of the output files 7002can be overridden with the -p command line switch. 7003 7004 7005---------------------------------------- 700611 November 2002. Summary of changes for version 20021111. 7007 7008 70090) ACPI Specification 2.0B is released and is now available at: 7010http://www.acpi.info/index.html 7011 7012 70131) ACPI CA Core Subsystem: 7014 7015Implemented support for the ACPI 2.0 SMBus Operation Regions. 7016This includes the early detection and handoff of the request to 7017the SMBus region handler (avoiding all of the complex field 7018support code), and support for the bidirectional return packet 7019from an SMBus write operation. This paves the way for the 7020development of SMBus drivers in each host operating system. 7021 7022Fixed a problem where the semaphore WAIT_FOREVER constant was 7023defined as 32 bits, but must be 16 bits according to the ACPI 7024specification. This had the side effect of causing ASL 7025Mutex/Event timeouts even though the ASL code requested a wait 7026forever. Changed all internal references to the ACPI timeout 7027parameter to 16 bits to prevent future problems. Changed the name 7028of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7029 7030Code and Data Size: Current core subsystem library sizes are shown 7031below. These are the code and data sizes for the acpica.lib 7032produced by the Microsoft Visual C++ 6.0 compiler, and these 7033values do not include any ACPI driver or OSPM code. The debug 7034version of the code includes the debug output trace mechanism and 7035has a much larger code and data size. Note that these values will 7036vary depending on the efficiency of the compiler and the compiler 7037options used during generation. 7038 7039 Previous Release 7040 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7041 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7042 Current Release: 7043 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7044 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7045 7046 70472) Linux 7048 7049Module loading/unloading fixes (John Cagle) 7050 7051 70523) iASL Compiler/Disassembler 7053 7054Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7055 7056Implemented support for the disassembly of all SMBus protocol 7057keywords (SMBQuick, SMBWord, etc.) 7058 7059---------------------------------------- 706001 November 2002. Summary of changes for version 20021101. 7061 7062 70631) ACPI CA Core Subsystem: 7064 7065Fixed a problem where platforms that have a GPE1 block but no GPE0 7066block were not handled correctly. This resulted in a "GPE 7067overlap" error message. GPE0 is no longer required. 7068 7069Removed code added in the previous release that inserted nodes 7070into the namespace in alphabetical order. This caused some side- 7071effects on various machines. The root cause of the problem is 7072still under investigation since in theory, the internal ordering 7073of the namespace nodes should not matter. 7074 7075 7076Enhanced error reporting for the case where a named object is not 7077found during control method execution. The full ACPI namepath 7078(name reference) of the object that was not found is displayed in 7079this case. 7080 7081Note: as a result of the overhaul of the namespace object types in 7082the previous release, the namespace nodes for the predefined 7083scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7084instead of ACPI_TYPE_ANY. This simplifies the namespace 7085management code but may affect code that walks the namespace tree 7086looking for specific object types. 7087 7088Code and Data Size: Current core subsystem library sizes are shown 7089below. These are the code and data sizes for the acpica.lib 7090produced by the Microsoft Visual C++ 6.0 compiler, and these 7091values do not include any ACPI driver or OSPM code. The debug 7092version of the code includes the debug output trace mechanism and 7093has a much larger code and data size. Note that these values will 7094vary depending on the efficiency of the compiler and the compiler 7095options used during generation. 7096 7097 Previous Release 7098 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7099 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7100 Current Release: 7101 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7102 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7103 7104 71052) Linux 7106 7107Fixed a problem introduced in the previous release where the 7108Processor and Thermal objects were not recognized and installed in 7109/proc. This was related to the scope type change described above. 7110 7111 71123) iASL Compiler/Disassembler 7113 7114Implemented the -g option to get all of the required ACPI tables 7115from the registry and save them to files (Windows version of the 7116compiler only.) The required tables are the FADT, FACS, and DSDT. 7117 7118Added ACPI table checksum validation during table disassembly in 7119order to catch corrupted tables. 7120 7121 7122---------------------------------------- 712322 October 2002. Summary of changes for version 20021022. 7124 71251) ACPI CA Core Subsystem: 7126 7127Implemented a restriction on the Scope operator that the target 7128must already exist in the namespace at the time the operator is 7129encountered (during table load or method execution). In other 7130words, forward references are not allowed and Scope() cannot 7131create a new object. This changes the previous behavior where the 7132interpreter would create the name if not found. This new behavior 7133correctly enables the search-to-root algorithm during namespace 7134lookup of the target name. Because of this upsearch, this fixes 7135the known Compaq _SB_.OKEC problem and makes both the AML 7136interpreter and iASL compiler compatible with other ACPI 7137implementations. 7138 7139Completed a major overhaul of the internal ACPI object types for 7140the ACPI Namespace and the associated operand objects. Many of 7141these types had become obsolete with the introduction of the two- 7142pass namespace load. This cleanup simplifies the code and makes 7143the entire namespace load mechanism much clearer and easier to 7144understand. 7145 7146Improved debug output for tracking scope opening/closing to help 7147diagnose scoping issues. The old scope name as well as the new 7148scope name are displayed. Also improved error messages for 7149problems with ASL Mutex objects and error messages for GPE 7150problems. 7151 7152Cleaned up the namespace dump code, removed obsolete code. 7153 7154All string output (for all namespace/object dumps) now uses the 7155common ACPI string output procedure which handles escapes properly 7156and does not emit non-printable characters. 7157 7158Fixed some issues with constants in the 64-bit version of the 7159local C library (utclib.c) 7160 7161 71622) Linux 7163 7164EC Driver: No longer attempts to acquire the Global Lock at 7165interrupt level. 7166 7167 71683) iASL Compiler/Disassembler 7169 7170Implemented ACPI 2.0B grammar change that disallows all Type 1 and 71712 opcodes outside of a control method. This means that the 7172"executable" operators (versus the "namespace" operators) cannot 7173be used at the table level; they can only be used within a control 7174method. 7175 7176Implemented the restriction on the Scope() operator where the 7177target must already exist in the namespace at the time the 7178operator is encountered (during ASL compilation). In other words, 7179forward references are not allowed and Scope() cannot create a new 7180object. This makes the iASL compiler compatible with other ACPI 7181implementations and makes the Scope() implementation adhere to the 7182ACPI specification. 7183 7184Fixed a problem where namepath optimization for the Alias operator 7185was optimizing the wrong path (of the two namepaths.) This caused 7186a "Missing alias link" error message. 7187 7188Fixed a problem where an "unknown reserved name" warning could be 7189incorrectly generated for names like "_SB" when the trailing 7190underscore is not used in the original ASL. 7191 7192Fixed a problem where the reserved name check did not handle 7193NamePaths with multiple NameSegs correctly. The first nameseg of 7194the NamePath was examined instead of the last NameSeg. 7195 7196 7197---------------------------------------- 7198 719902 October 2002. Summary of changes for this release. 7200 7201 72021) ACPI CA Core Subsystem version 20021002: 7203 7204Fixed a problem where a store/copy of a string to an existing 7205string did not always set the string length properly in the String 7206object. 7207 7208Fixed a reported problem with the ToString operator where the 7209behavior was identical to the ToHexString operator instead of just 7210simply converting a raw buffer to a string data type. 7211 7212Fixed a problem where CopyObject and the other "explicit" 7213conversion operators were not updating the internal namespace node 7214type as part of the store operation. 7215 7216Fixed a memory leak during implicit source operand conversion 7217where the original object was not deleted if it was converted to a 7218new object of a different type. 7219 7220Enhanced error messages for all problems associated with namespace 7221lookups. Common procedure generates and prints the lookup name as 7222well as the formatted status. 7223 7224Completed implementation of a new design for the Alias support 7225within the namespace. The existing design did not handle the case 7226where a new object was assigned to one of the two names due to the 7227use of an explicit conversion operator, resulting in the two names 7228pointing to two different objects. The new design simply points 7229the Alias name to the original name node - not to the object. 7230This results in a level of indirection that must be handled in the 7231name resolution mechanism. 7232 7233Code and Data Size: Current core subsystem library sizes are shown 7234below. These are the code and data sizes for the acpica.lib 7235produced by the Microsoft Visual C++ 6.0 compiler, and these 7236values do not include any ACPI driver or OSPM code. The debug 7237version of the code includes the debug output trace mechanism and 7238has a larger code and data size. Note that these values will vary 7239depending on the efficiency of the compiler and the compiler 7240options used during generation. 7241 7242 Previous Release 7243 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7244 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7245 Current Release: 7246 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7247 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7248 7249 72502) Linux 7251 7252Initialize thermal driver's timer before it is used. (Knut 7253Neumann) 7254 7255Allow handling negative celsius values. (Kochi Takayoshi) 7256 7257Fix thermal management and make trip points. R/W (Pavel Machek) 7258 7259Fix /proc/acpi/sleep. (P. Christeas) 7260 7261IA64 fixes. (David Mosberger) 7262 7263Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7264 7265Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7266Brodowski) 7267 7268 72693) iASL Compiler/Disassembler 7270 7271Clarified some warning/error messages. 7272 7273 7274---------------------------------------- 727518 September 2002. Summary of changes for this release. 7276 7277 72781) ACPI CA Core Subsystem version 20020918: 7279 7280Fixed a reported problem with reference chaining (via the Index() 7281and RefOf() operators) in the ObjectType() and SizeOf() operators. 7282The definition of these operators includes the dereferencing of 7283all chained references to return information on the base object. 7284 7285Fixed a problem with stores to indexed package elements - the 7286existing code would not complete the store if an "implicit 7287conversion" was not performed. In other words, if the existing 7288object (package element) was to be replaced completely, the code 7289didn't handle this case. 7290 7291Relaxed typechecking on the ASL "Scope" operator to allow the 7292target name to refer to an object of type Integer, String, or 7293Buffer, in addition to the scoping object types (Device, 7294predefined Scopes, Processor, PowerResource, and ThermalZone.) 7295This allows existing AML code that has workarounds for a bug in 7296Windows to function properly. A warning is issued, however. This 7297affects both the AML interpreter and the iASL compiler. Below is 7298an example of this type of ASL code: 7299 7300 Name(DEB,0x00) 7301 Scope(DEB) 7302 { 7303 7304Fixed some reported problems with 64-bit integer support in the 7305local implementation of C library functions (clib.c) 7306 7307 73082) Linux 7309 7310Use ACPI fix map region instead of IOAPIC region, since it is 7311undefined in non-SMP. 7312 7313Ensure that the SCI has the proper polarity and trigger, even on 7314systems that do not have an interrupt override entry in the MADT. 7315 73162.5 big driver reorganization (Pat Mochel) 7317 7318Use early table mapping code from acpitable.c (Andi Kleen) 7319 7320New blacklist entries (Andi Kleen) 7321 7322Blacklist improvements. Split blacklist code out into a separate 7323file. Move checking the blacklist to very early. Previously, we 7324would use ACPI tables, and then halfway through init, check the 7325blacklist -- too late. Now, it's early enough to completely fall- 7326back to non-ACPI. 7327 7328 73293) iASL Compiler/Disassembler version 20020918: 7330 7331Fixed a problem where the typechecking code didn't know that an 7332alias could point to a method. In other words, aliases were not 7333being dereferenced during typechecking. 7334 7335 7336---------------------------------------- 733729 August 2002. Summary of changes for this release. 7338 73391) ACPI CA Core Subsystem Version 20020829: 7340 7341If the target of a Scope() operator already exists, it must be an 7342object type that actually opens a scope -- such as a Device, 7343Method, Scope, etc. This is a fatal runtime error. Similar error 7344check has been added to the iASL compiler also. 7345 7346Tightened up the namespace load to disallow multiple names in the 7347same scope. This previously was allowed if both objects were of 7348the same type. (i.e., a lookup was the same as entering a new 7349name). 7350 7351 73522) Linux 7353 7354Ensure that the ACPI interrupt has the proper trigger and 7355polarity. 7356 7357local_irq_disable is extraneous. (Matthew Wilcox) 7358 7359Make "acpi=off" actually do what it says, and not use the ACPI 7360interpreter *or* the tables. 7361 7362Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7363Takayoshi) 7364 7365 73663) iASL Compiler/Disassembler Version 20020829: 7367 7368Implemented namepath optimization for name declarations. For 7369example, a declaration like "Method (\_SB_.ABCD)" would get 7370optimized to "Method (ABCD)" if the declaration is within the 7371\_SB_ scope. This optimization is in addition to the named 7372reference path optimization first released in the previous 7373version. This would seem to complete all possible optimizations 7374for namepaths within the ASL/AML. 7375 7376If the target of a Scope() operator already exists, it must be an 7377object type that actually opens a scope -- such as a Device, 7378Method, Scope, etc. 7379 7380Implemented a check and warning for unreachable code in the same 7381block below a Return() statement. 7382 7383Fixed a problem where the listing file was not generated if the 7384compiler aborted if the maximum error count was exceeded (200). 7385 7386Fixed a problem where the typechecking of method return values was 7387broken. This includes the check for a return value when the 7388method is invoked as a TermArg (a return value is expected.) 7389 7390Fixed a reported problem where EOF conditions during a quoted 7391string or comment caused a fault. 7392 7393 7394---------------------------------------- 739515 August 2002. Summary of changes for this release. 7396 73971) ACPI CA Core Subsystem Version 20020815: 7398 7399Fixed a reported problem where a Store to a method argument that 7400contains a reference did not perform the indirect store correctly. 7401This problem was created during the conversion to the new 7402reference object model - the indirect store to a method argument 7403code was not updated to reflect the new model. 7404 7405Reworked the ACPI mode change code to better conform to ACPI 2.0, 7406handle corner cases, and improve code legibility (Kochi Takayoshi) 7407 7408Fixed a problem with the pathname parsing for the carat (^) 7409prefix. The heavy use of the carat operator by the new namepath 7410optimization in the iASL compiler uncovered a problem with the AML 7411interpreter handling of this prefix. In the case where one or 7412more carats precede a single nameseg, the nameseg was treated as 7413standalone and the search rule (to root) was inadvertently 7414applied. This could cause both the iASL compiler and the 7415interpreter to find the wrong object or to miss the error that 7416should occur if the object does not exist at that exact pathname. 7417 7418Found and fixed the problem where the HP Pavilion DSDT would not 7419load. This was a relatively minor tweak to the table loading code 7420(a problem caused by the unexpected encounter with a method 7421invocation not within a control method), but it does not solve the 7422overall issue of the execution of AML code at the table level. 7423This investigation is still ongoing. 7424 7425Code and Data Size: Current core subsystem library sizes are shown 7426below. These are the code and data sizes for the acpica.lib 7427produced by the Microsoft Visual C++ 6.0 compiler, and these 7428values do not include any ACPI driver or OSPM code. The debug 7429version of the code includes the debug output trace mechanism and 7430has a larger code and data size. Note that these values will vary 7431depending on the efficiency of the compiler and the compiler 7432options used during generation. 7433 7434 Previous Release 7435 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7436 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7437 Current Release: 7438 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7439 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7440 7441 74422) Linux 7443 7444Remove redundant slab.h include (Brad Hards) 7445 7446Fix several bugs in thermal.c (Herbert Nachtnebel) 7447 7448Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7449 7450Change acpi_system_suspend to use updated irq functions (Pavel 7451Machek) 7452 7453Export acpi_get_firmware_table (Matthew Wilcox) 7454 7455Use proper root proc entry for ACPI (Kochi Takayoshi) 7456 7457Fix early-boot table parsing (Bjorn Helgaas) 7458 7459 74603) iASL Compiler/Disassembler 7461 7462Reworked the compiler options to make them more consistent and to 7463use two-letter options where appropriate. We were running out of 7464sensible letters. This may break some makefiles, so check the 7465current options list by invoking the compiler with no parameters. 7466 7467Completed the design and implementation of the ASL namepath 7468optimization option for the compiler. This option optimizes all 7469references to named objects to the shortest possible path. The 7470first attempt tries to utilize a single nameseg (4 characters) and 7471the "search-to-root" algorithm used by the interpreter. If that 7472cannot be used (because either the name is not in the search path 7473or there is a conflict with another object with the same name), 7474the pathname is optimized using the carat prefix (usually a 7475shorter string than specifying the entire path from the root.) 7476 7477Implemented support to obtain the DSDT from the Windows registry 7478(when the disassembly option is specified with no input file). 7479Added this code as the implementation for AcpiOsTableOverride in 7480the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7481utility) to scan memory for the DSDT to the AcpiOsTableOverride 7482function in the DOS OSL to make the disassembler truly OS 7483independent. 7484 7485Implemented a new option to disassemble and compile in one step. 7486When used without an input filename, this option will grab the 7487DSDT from the local machine, disassemble it, and compile it in one 7488step. 7489 7490Added a warning message for invalid escapes (a backslash followed 7491by any character other than the allowable escapes). This catches 7492the quoted string error "\_SB_" (which should be "\\_SB_" ). 7493 7494Also, there are numerous instances in the ACPI specification where 7495this error occurs. 7496 7497Added a compiler option to disable all optimizations. This is 7498basically the "compatibility mode" because by using this option, 7499the AML code will come out exactly the same as other ASL 7500compilers. 7501 7502Added error messages for incorrectly ordered dependent resource 7503functions. This includes: missing EndDependentFn macro at end of 7504dependent resource list, nested dependent function macros (both 7505start and end), and missing StartDependentFn macro. These are 7506common errors that should be caught at compile time. 7507 7508Implemented _OSI support for the disassembler and compiler. _OSI 7509must be included in the namespace for proper disassembly (because 7510the disassembler must know the number of arguments.) 7511 7512Added an "optimization" message type that is optional (off by 7513default). This message is used for all optimizations - including 7514constant folding, integer optimization, and namepath optimization. 7515 7516---------------------------------------- 751725 July 2002. Summary of changes for this release. 7518 7519 75201) ACPI CA Core Subsystem Version 20020725: 7521 7522The AML Disassembler has been enhanced to produce compilable ASL 7523code and has been integrated into the iASL compiler (see below) as 7524well as the single-step disassembly for the AML debugger and the 7525disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7526resource templates and macros are fully supported. The 7527disassembler has been tested on over 30 different AML files, 7528producing identical AML when the resulting disassembled ASL file 7529is recompiled with the same ASL compiler. 7530 7531Modified the Resource Manager to allow zero interrupts and zero 7532dma channels during the GetCurrentResources call. This was 7533causing problems on some platforms. 7534 7535Added the AcpiOsRedirectOutput interface to the OSL to simplify 7536output redirection for the AcpiOsPrintf and AcpiOsVprintf 7537interfaces. 7538 7539Code and Data Size: Current core subsystem library sizes are shown 7540below. These are the code and data sizes for the acpica.lib 7541produced by the Microsoft Visual C++ 6.0 compiler, and these 7542values do not include any ACPI driver or OSPM code. The debug 7543version of the code includes the debug output trace mechanism and 7544has a larger code and data size. Note that these values will vary 7545depending on the efficiency of the compiler and the compiler 7546options used during generation. 7547 7548 Previous Release 7549 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7550 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7551 Current Release: 7552 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7553 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7554 7555 75562) Linux 7557 7558Fixed a panic in the EC driver (Dominik Brodowski) 7559 7560Implemented checksum of the R/XSDT itself during Linux table scan 7561(Richard Schaal) 7562 7563 75643) iASL compiler 7565 7566The AML disassembler is integrated into the compiler. The "-d" 7567option invokes the disassembler to completely disassemble an 7568input AML file, producing as output a text ASL file with the 7569extension ".dsl" (to avoid name collisions with existing .asl 7570source files.) A future enhancement will allow the disassembler 7571to obtain the BIOS DSDT from the registry under Windows. 7572 7573Fixed a problem with the VendorShort and VendorLong resource 7574descriptors where an invalid AML sequence was created. 7575 7576Implemented a fix for BufferData term in the ASL parser. It was 7577inadvertently defined twice, allowing invalid syntax to pass and 7578causing reduction conflicts. 7579 7580Fixed a problem where the Ones opcode could get converted to a 7581value of zero if "Ones" was used where a byte, word or dword value 7582was expected. The 64-bit value is now truncated to the correct 7583size with the correct value. 7584 7585 7586 7587---------------------------------------- 758802 July 2002. Summary of changes for this release. 7589 7590 75911) ACPI CA Core Subsystem Version 20020702: 7592 7593The Table Manager code has been restructured to add several new 7594features. Tables that are not required by the core subsystem 7595(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7596validated in any way and are returned from AcpiGetFirmwareTable if 7597requested. The AcpiOsTableOverride interface is now called for 7598each table that is loaded by the subsystem in order to allow the 7599host to override any table it chooses. Previously, only the DSDT 7600could be overridden. Added one new files, tbrsdt.c and 7601tbgetall.c. 7602 7603Fixed a problem with the conversion of internal package objects to 7604external objects (when a package is returned from a control 7605method.) The return buffer length was set to zero instead of the 7606proper length of the package object. 7607 7608Fixed a reported problem with the use of the RefOf and DeRefOf 7609operators when passing reference arguments to control methods. A 7610new type of Reference object is used internally for references 7611produced by the RefOf operator. 7612 7613Added additional error messages in the Resource Manager to explain 7614AE_BAD_DATA errors when they occur during resource parsing. 7615 7616Split the AcpiEnableSubsystem into two primitives to enable a 7617finer granularity initialization sequence. These two calls should 7618be called in this order: AcpiEnableSubsystem (flags), 7619AcpiInitializeObjects (flags). The flags parameter remains the 7620same. 7621 7622 76232) Linux 7624 7625Updated the ACPI utilities module to understand the new style of 7626fully resolved package objects that are now returned from the core 7627subsystem. This eliminates errors of the form: 7628 7629 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7630 acpi_utils-0430 [145] acpi_evaluate_reference: 7631 Invalid element in package (not a device reference) 7632 7633The method evaluation utility uses the new buffer allocation 7634scheme instead of calling AcpiEvaluate Object twice. 7635 7636Added support for ECDT. This allows the use of the Embedded 7637 7638Controller before the namespace has been fully initialized, which 7639is necessary for ACPI 2.0 support, and for some laptops to 7640initialize properly. (Laptops using ECDT are still rare, so only 7641limited testing was performed of the added functionality.) 7642 7643Fixed memory leaks in the EC driver. 7644 7645Eliminated a brittle code structure in acpi_bus_init(). 7646 7647Eliminated the acpi_evaluate() helper function in utils.c. It is 7648no longer needed since acpi_evaluate_object can optionally 7649allocate memory for the return object. 7650 7651Implemented fix for keyboard hang when getting battery readings on 7652some systems (Stephen White) 7653 7654PCI IRQ routing update (Dominik Brodowski) 7655 7656Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7657support 7658 7659---------------------------------------- 766011 June 2002. Summary of changes for this release. 7661 7662 76631) ACPI CA Core Subsystem Version 20020611: 7664 7665Fixed a reported problem where constants such as Zero and One 7666appearing within _PRT packages were not handled correctly within 7667the resource manager code. Originally reported against the ASL 7668compiler because the code generator now optimizes integers to 7669their minimal AML representation (i.e. AML constants if possible.) 7670The _PRT code now handles all AML constant opcodes correctly 7671(Zero, One, Ones, Revision). 7672 7673Fixed a problem with the Concatenate operator in the AML 7674interpreter where a buffer result object was incorrectly marked as 7675not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7676 7677All package sub-objects are now fully resolved before they are 7678returned from the external ACPI interfaces. This means that name 7679strings are resolved to object handles, and constant operators 7680(Zero, One, Ones, Revision) are resolved to Integers. 7681 7682Implemented immediate resolution of the AML Constant opcodes 7683(Zero, One, Ones, Revision) to Integer objects upon detection 7684within the AML stream. This has simplified and reduced the 7685generated code size of the subsystem by eliminating about 10 7686switch statements for these constants (which previously were 7687contained in Reference objects.) The complicating issues are that 7688the Zero opcode is used as a "placeholder" for unspecified 7689optional target operands and stores to constants are defined to be 7690no-ops. 7691 7692Code and Data Size: Current core subsystem library sizes are shown 7693below. These are the code and data sizes for the acpica.lib 7694produced by the Microsoft Visual C++ 6.0 compiler, and these 7695values do not include any ACPI driver or OSPM code. The debug 7696version of the code includes the debug output trace mechanism and 7697has a larger code and data size. Note that these values will vary 7698depending on the efficiency of the compiler and the compiler 7699options used during generation. 7700 7701 Previous Release 7702 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7703 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7704 Current Release: 7705 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7706 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7707 7708 77092) Linux 7710 7711 7712Added preliminary support for obtaining _TRA data for PCI root 7713bridges (Bjorn Helgaas). 7714 7715 77163) iASL Compiler Version X2046: 7717 7718Fixed a problem where the "_DDN" reserved name was defined to be a 7719control method with one argument. There are no arguments, and 7720_DDN does not have to be a control method. 7721 7722Fixed a problem with the Linux version of the compiler where the 7723source lines printed with error messages were the wrong lines. 7724This turned out to be the "LF versus CR/LF" difference between 7725Windows and Unix. This appears to be the longstanding issue 7726concerning listing output and error messages. 7727 7728Fixed a problem with the Linux version of compiler where opcode 7729names within error messages were wrong. This was caused by a 7730slight difference in the output of the Flex tool on Linux versus 7731Windows. 7732 7733Fixed a problem with the Linux compiler where the hex output files 7734contained some garbage data caused by an internal buffer overrun. 7735 7736 7737---------------------------------------- 773817 May 2002. Summary of changes for this release. 7739 7740 77411) ACPI CA Core Subsystem Version 20020517: 7742 7743Implemented a workaround to an BIOS bug discovered on the HP 7744OmniBook where the FADT revision number and the table size are 7745inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7746behavior is to fallback to using only the ACPI 1.0 fields of the 7747FADT if the table is too small to be a ACPI 2.0 table as claimed 7748by the revision number. Although this is a BIOS bug, this is a 7749case where the workaround is simple enough and with no side 7750effects, so it seemed prudent to add it. A warning message is 7751issued, however. 7752 7753Implemented minimum size checks for the fixed-length ACPI tables - 7754- the FADT and FACS, as well as consistency checks between the 7755revision number and the table size. 7756 7757Fixed a reported problem in the table override support where the 7758new table pointer was incorrectly treated as a physical address 7759instead of a logical address. 7760 7761Eliminated the use of the AE_AML_ERROR exception and replaced it 7762with more descriptive codes. 7763 7764Fixed a problem where an exception would occur if an ASL Field was 7765defined with no named Field Units underneath it (used by some 7766index fields). 7767 7768Code and Data Size: Current core subsystem library sizes are shown 7769below. These are the code and data sizes for the acpica.lib 7770produced by the Microsoft Visual C++ 6.0 compiler, and these 7771values do not include any ACPI driver or OSPM code. The debug 7772version of the code includes the debug output trace mechanism and 7773has a larger code and data size. Note that these values will vary 7774depending on the efficiency of the compiler and the compiler 7775options used during generation. 7776 7777 Previous Release 7778 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7779 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7780 Current Release: 7781 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7782 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7783 7784 7785 77862) Linux 7787 7788Much work done on ACPI init (MADT and PCI IRQ routing support). 7789(Paul D. and Dominik Brodowski) 7790 7791Fix PCI IRQ-related panic on boot (Sam Revitch) 7792 7793Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7794 7795Fix "MHz" typo (Dominik Brodowski) 7796 7797Fix RTC year 2000 issue (Dominik Brodowski) 7798 7799Preclude multiple button proc entries (Eric Brunet) 7800 7801Moved arch-specific code out of include/platform/aclinux.h 7802 78033) iASL Compiler Version X2044: 7804 7805Implemented error checking for the string used in the EISAID macro 7806(Usually used in the definition of the _HID object.) The code now 7807strictly enforces the PnP format - exactly 7 characters, 3 7808uppercase letters and 4 hex digits. 7809 7810If a raw string is used in the definition of the _HID object 7811(instead of the EISAID macro), the string must contain all 7812alphanumeric characters (e.g., "*PNP0011" is not allowed because 7813of the asterisk.) 7814 7815Implemented checking for invalid use of ACPI reserved names for 7816most of the name creation operators (Name, Device, Event, Mutex, 7817OperationRegion, PowerResource, Processor, and ThermalZone.) 7818Previously, this check was only performed for control methods. 7819 7820Implemented an additional check on the Name operator to emit an 7821error if a reserved name that must be implemented in ASL as a 7822control method is used. We know that a reserved name must be a 7823method if it is defined with input arguments. 7824 7825The warning emitted when a namespace object reference is not found 7826during the cross reference phase has been changed into an error. 7827The "External" directive should be used for names defined in other 7828modules. 7829 7830 78314) Tools and Utilities 7832 7833The 16-bit tools (adump16 and aexec16) have been regenerated and 7834tested. 7835 7836Fixed a problem with the output of both acpidump and adump16 where 7837the indentation of closing parentheses and brackets was not 7838 7839aligned properly with the parent block. 7840 7841 7842---------------------------------------- 784303 May 2002. Summary of changes for this release. 7844 7845 78461) ACPI CA Core Subsystem Version 20020503: 7847 7848Added support a new OSL interface that allows the host operating 7849 7850system software to override the DSDT found in the firmware - 7851AcpiOsTableOverride. With this interface, the OSL can examine the 7852version of the firmware DSDT and replace it with a different one 7853if desired. 7854 7855Added new external interfaces for accessing ACPI registers from 7856device drivers and other system software - AcpiGetRegister and 7857AcpiSetRegister. This was simply an externalization of the 7858existing AcpiHwBitRegister interfaces. 7859 7860Fixed a regression introduced in the previous build where the 7861ASL/AML CreateField operator always returned an error, 7862"destination must be a NS Node". 7863 7864Extended the maximum time (before failure) to successfully enable 7865ACPI mode to 3 seconds. 7866 7867Code and Data Size: Current core subsystem library sizes are shown 7868below. These are the code and data sizes for the acpica.lib 7869produced by the Microsoft Visual C++ 6.0 compiler, and these 7870values do not include any ACPI driver or OSPM code. The debug 7871version of the code includes the debug output trace mechanism and 7872has a larger code and data size. Note that these values will vary 7873depending on the efficiency of the compiler and the compiler 7874options used during generation. 7875 7876 Previous Release 7877 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7878 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7879 Current Release: 7880 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7881 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7882 7883 78842) Linux 7885 7886Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 7887free. While 3 out of 4 of our in-house systems work fine, the last 7888one still hangs when testing the LAPIC timer. 7889 7890Renamed many files in 2.5 kernel release to omit "acpi_" from the 7891name. 7892 7893Added warning on boot for Presario 711FR. 7894 7895Sleep improvements (Pavel Machek) 7896 7897ACPI can now be built without CONFIG_PCI enabled. 7898 7899IA64: Fixed memory map functions (JI Lee) 7900 7901 79023) iASL Compiler Version X2043: 7903 7904Added support to allow the compiler to be integrated into the MS 7905VC++ development environment for one-button compilation of single 7906files or entire projects -- with error-to-source-line mapping. 7907 7908Implemented support for compile-time constant folding for the 7909Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 7910specification. This allows the ASL writer to use expressions 7911instead of Integer/Buffer/String constants in terms that must 7912evaluate to constants at compile time and will also simplify the 7913emitted AML in any such sub-expressions that can be folded 7914(evaluated at compile-time.) This increases the size of the 7915compiler significantly because a portion of the ACPI CA AML 7916interpreter is included within the compiler in order to pre- 7917evaluate constant expressions. 7918 7919 7920Fixed a problem with the "Unicode" ASL macro that caused the 7921compiler to fault. (This macro is used in conjunction with the 7922_STR reserved name.) 7923 7924Implemented an AML opcode optimization to use the Zero, One, and 7925Ones opcodes where possible to further reduce the size of integer 7926constants and thus reduce the overall size of the generated AML 7927code. 7928 7929Implemented error checking for new reserved terms for ACPI version 79302.0A. 7931 7932Implemented the -qr option to display the current list of ACPI 7933reserved names known to the compiler. 7934 7935Implemented the -qc option to display the current list of ASL 7936operators that are allowed within constant expressions and can 7937therefore be folded at compile time if the operands are constants. 7938 7939 79404) Documentation 7941 7942Updated the Programmer's Reference for new interfaces, data types, 7943and memory allocation model options. 7944 7945Updated the iASL Compiler User Reference to apply new format and 7946add information about new features and options. 7947 7948---------------------------------------- 794919 April 2002. Summary of changes for this release. 7950 79511) ACPI CA Core Subsystem Version 20020419: 7952 7953The source code base for the Core Subsystem has been completely 7954cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 7955versions. The Lint option files used are included in the 7956/acpi/generate/lint directory. 7957 7958Implemented enhanced status/error checking across the entire 7959Hardware manager subsystem. Any hardware errors (reported from 7960the OSL) are now bubbled up and will abort a running control 7961method. 7962 7963 7964Fixed a problem where the per-ACPI-table integer width (32 or 64) 7965was stored only with control method nodes, causing a fault when 7966non-control method code was executed during table loading. The 7967solution implemented uses a global variable to indicate table 7968width across the entire ACPI subsystem. Therefore, ACPI CA does 7969not support mixed integer widths across different ACPI tables 7970(DSDT, SSDT). 7971 7972Fixed a problem where NULL extended fields (X fields) in an ACPI 79732.0 ACPI FADT caused the table load to fail. Although the 7974existing ACPI specification is a bit fuzzy on this topic, the new 7975behavior is to fall back on a ACPI 1.0 field if the corresponding 7976ACPI 2.0 X field is zero (even though the table revision indicates 7977a full ACPI 2.0 table.) The ACPI specification will be updated to 7978clarify this issue. 7979 7980Fixed a problem with the SystemMemory operation region handler 7981where memory was always accessed byte-wise even if the AML- 7982specified access width was larger than a byte. This caused 7983problems on systems with memory-mapped I/O. Memory is now 7984accessed with the width specified. On systems that do not support 7985non-aligned transfers, a check is made to guarantee proper address 7986alignment before proceeding in order to avoid an AML-caused 7987alignment fault within the kernel. 7988 7989 7990Fixed a problem with the ExtendedIrq resource where only one byte 7991of the 4-byte Irq field was extracted. 7992 7993Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 7994function was out of date and required a rewrite. 7995 7996Code and Data Size: Current core subsystem library sizes are shown 7997below. These are the code and data sizes for the acpica.lib 7998produced by the Microsoft Visual C++ 6.0 compiler, and these 7999values do not include any ACPI driver or OSPM code. The debug 8000version of the code includes the debug output trace mechanism and 8001has a larger code and data size. Note that these values will vary 8002depending on the efficiency of the compiler and the compiler 8003options used during generation. 8004 8005 Previous Release 8006 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8007 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8008 Current Release: 8009 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8010 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8011 8012 80132) Linux 8014 8015PCI IRQ routing fixes (Dominik Brodowski) 8016 8017 80183) iASL Compiler Version X2042: 8019 8020Implemented an additional compile-time error check for a field 8021unit whose size + minimum access width would cause a run-time 8022access beyond the end-of-region. Previously, only the field size 8023itself was checked. 8024 8025The Core subsystem and iASL compiler now share a common parse 8026object in preparation for compile-time evaluation of the type 80273/4/5 ASL operators. 8028 8029 8030---------------------------------------- 8031Summary of changes for this release: 03_29_02 8032 80331) ACPI CA Core Subsystem Version 20020329: 8034 8035Implemented support for late evaluation of TermArg operands to 8036Buffer and Package objects. This allows complex expressions to be 8037used in the declarations of these object types. 8038 8039Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 80401.0, if the field was larger than 32 bits, it was returned as a 8041buffer - otherwise it was returned as an integer. In ACPI 2.0, 8042the field is returned as a buffer only if the field is larger than 804364 bits. The TableRevision is now considered when making this 8044conversion to avoid incompatibility with existing ASL code. 8045 8046Implemented logical addressing for AcpiOsGetRootPointer. This 8047allows an RSDP with either a logical or physical address. With 8048this support, the host OS can now override all ACPI tables with 8049one logical RSDP. Includes implementation of "typed" pointer 8050support to allow a common data type for both physical and logical 8051pointers internally. This required a change to the 8052AcpiOsGetRootPointer interface. 8053 8054Implemented the use of ACPI 2.0 Generic Address Structures for all 8055GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8056mapped I/O for these ACPI features. 8057 8058Initialization now ignores not only non-required tables (All 8059tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8060not validate the table headers of unrecognized tables. 8061 8062Fixed a problem where a notify handler could only be 8063installed/removed on an object of type Device. All "notify" 8064 8065objects are now supported -- Devices, Processor, Power, and 8066Thermal. 8067 8068Removed most verbosity from the ACPI_DB_INFO debug level. Only 8069critical information is returned when this debug level is enabled. 8070 8071Code and Data Size: Current core subsystem library sizes are shown 8072below. These are the code and data sizes for the acpica.lib 8073produced by the Microsoft Visual C++ 6.0 compiler, and these 8074values do not include any ACPI driver or OSPM code. The debug 8075version of the code includes the debug output trace mechanism and 8076has a larger code and data size. Note that these values will vary 8077depending on the efficiency of the compiler and the compiler 8078options used during generation. 8079 8080 Previous Release 8081 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8082 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8083 Current Release: 8084 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8085 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8086 8087 80882) Linux: 8089 8090The processor driver (acpi_processor.c) now fully supports ACPI 80912.0-based processor performance control (e.g. Intel(R) 8092SpeedStep(TM) technology) Note that older laptops that only have 8093the Intel "applet" interface are not supported through this. The 8094'limit' and 'performance' interface (/proc) are fully functional. 8095[Note that basic policy for controlling performance state 8096transitions will be included in the next version of ospmd.] The 8097idle handler was modified to more aggressively use C2, and PIIX4 8098errata handling underwent a complete overhaul (big thanks to 8099Dominik Brodowski). 8100 8101Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8102based devices in the ACPI namespace are now dynamically bound 8103(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8104This allows, among other things, ACPI to resolve bus numbers for 8105subordinate PCI bridges. 8106 8107Enhanced PCI IRQ routing to get the proper bus number for _PRT 8108entries defined underneath PCI bridges. 8109 8110Added IBM 600E to bad bios list due to invalid _ADR value for 8111PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8112 8113In the process of adding full MADT support (e.g. IOAPIC) for IA32 8114(acpi.c, mpparse.c) -- stay tuned. 8115 8116Added back visual differentiation between fixed-feature and 8117control-method buttons in dmesg. Buttons are also subtyped (e.g. 8118button/power/PWRF) to simplify button identification. 8119 8120We no longer use -Wno-unused when compiling debug. Please ignore 8121any "_THIS_MODULE defined but not used" messages. 8122 8123Can now shut down the system using "magic sysrq" key. 8124 8125 81263) iASL Compiler version 2041: 8127 8128Fixed a problem where conversion errors for hex/octal/decimal 8129constants were not reported. 8130 8131Implemented a fix for the General Register template Address field. 8132This field was 8 bits when it should be 64. 8133 8134Fixed a problem where errors/warnings were no longer being emitted 8135within the listing output file. 8136 8137Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8138exactly 4 characters, alphanumeric only. 8139 8140 8141 8142 8143---------------------------------------- 8144Summary of changes for this release: 03_08_02 8145 8146 81471) ACPI CA Core Subsystem Version 20020308: 8148 8149Fixed a problem with AML Fields where the use of the "AccessAny" 8150keyword could cause an interpreter error due to attempting to read 8151or write beyond the end of the parent Operation Region. 8152 8153Fixed a problem in the SystemMemory Operation Region handler where 8154an attempt was made to map memory beyond the end of the region. 8155This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8156errors on some Linux systems. 8157 8158Fixed a problem where the interpreter/namespace "search to root" 8159algorithm was not functioning for some object types. Relaxed the 8160internal restriction on the search to allow upsearches for all 8161external object types as well as most internal types. 8162 8163 81642) Linux: 8165 8166We now use safe_halt() macro versus individual calls to sti | hlt. 8167 8168Writing to the processor limit interface should now work. "echo 1" 8169will increase the limit, 2 will decrease, and 0 will reset to the 8170 8171default. 8172 8173 81743) ASL compiler: 8175 8176Fixed segfault on Linux version. 8177 8178 8179---------------------------------------- 8180Summary of changes for this release: 02_25_02 8181 81821) ACPI CA Core Subsystem: 8183 8184 8185Fixed a problem where the GPE bit masks were not initialized 8186properly, causing erratic GPE behavior. 8187 8188Implemented limited support for multiple calling conventions. The 8189code can be generated with either the VPL (variable parameter 8190list, or "C") convention, or the FPL (fixed parameter list, or 8191"Pascal") convention. The core subsystem is about 3.4% smaller 8192when generated with FPL. 8193 8194 81952) Linux 8196 8197Re-add some /proc/acpi/event functionality that was lost during 8198the rewrite 8199 8200Resolved issue with /proc events for fixed-feature buttons showing 8201up as the system device. 8202 8203Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8204 8205Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8206 8207Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8208 8209Fixed limit interface & usage to fix bugs with passive cooling 8210hysterisis. 8211 8212Restructured PRT support. 8213 8214 8215---------------------------------------- 8216Summary of changes for this label: 02_14_02 8217 8218 82191) ACPI CA Core Subsystem: 8220 8221Implemented support in AcpiLoadTable to allow loading of FACS and 8222FADT tables. 8223 8224Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8225been removed. All 64-bit platforms should be migrated to the ACPI 82262.0 tables. The actbl71.h header has been removed from the source 8227tree. 8228 8229All C macros defined within the subsystem have been prefixed with 8230"ACPI_" to avoid collision with other system include files. 8231 8232Removed the return value for the two AcpiOsPrint interfaces, since 8233it is never used and causes lint warnings for ignoring the return 8234value. 8235 8236Added error checking to all internal mutex acquire and release 8237calls. Although a failure from one of these interfaces is 8238probably a fatal system error, these checks will cause the 8239immediate abort of the currently executing method or interface. 8240 8241Fixed a problem where the AcpiSetCurrentResources interface could 8242fault. This was a side effect of the deployment of the new memory 8243allocation model. 8244 8245Fixed a couple of problems with the Global Lock support introduced 8246in the last major build. The "common" (1.0/2.0) internal FACS was 8247being overwritten with the FACS signature and clobbering the 8248Global Lock pointer. Also, the actual firmware FACS was being 8249unmapped after construction of the "common" FACS, preventing 8250access to the actual Global Lock field within it. The "common" 8251internal FACS is no longer installed as an actual ACPI table; it 8252is used simply as a global. 8253 8254Code and Data Size: Current core subsystem library sizes are shown 8255below. These are the code and data sizes for the acpica.lib 8256produced by the Microsoft Visual C++ 6.0 compiler, and these 8257values do not include any ACPI driver or OSPM code. The debug 8258version of the code includes the debug output trace mechanism and 8259has a larger code and data size. Note that these values will vary 8260depending on the efficiency of the compiler and the compiler 8261options used during generation. 8262 8263 Previous Release (02_07_01) 8264 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8265 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8266 Current Release: 8267 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8268 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8269 8270 82712) Linux 8272 8273Updated Linux-specific code for core macro and OSL interface 8274changes described above. 8275 8276Improved /proc/acpi/event. It now can be opened only once and has 8277proper poll functionality. 8278 8279Fixed and restructured power management (acpi_bus). 8280 8281Only create /proc "view by type" when devices of that class exist. 8282 8283Fixed "charging/discharging" bug (and others) in acpi_battery. 8284 8285Improved thermal zone code. 8286 8287 82883) ASL Compiler, version X2039: 8289 8290 8291Implemented the new compiler restriction on ASL String hex/octal 8292escapes to non-null, ASCII values. An error results if an invalid 8293value is used. (This will require an ACPI 2.0 specification 8294change.) 8295 8296AML object labels that are output to the optional C and ASM source 8297are now prefixed with both the ACPI table signature and table ID 8298to help guarantee uniqueness within a large BIOS project. 8299 8300 8301---------------------------------------- 8302Summary of changes for this label: 02_01_02 8303 83041) ACPI CA Core Subsystem: 8305 8306ACPI 2.0 support is complete in the entire Core Subsystem and the 8307ASL compiler. All new ACPI 2.0 operators are implemented and all 8308other changes for ACPI 2.0 support are complete. With 8309simultaneous code and data optimizations throughout the subsystem, 8310ACPI 2.0 support has been implemented with almost no additional 8311cost in terms of code and data size. 8312 8313Implemented a new mechanism for allocation of return buffers. If 8314the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8315be allocated on behalf of the caller. Consolidated all return 8316buffer validation and allocation to a common procedure. Return 8317buffers will be allocated via the primary OSL allocation interface 8318since it appears that a separate pool is not needed by most users. 8319If a separate pool is required for these buffers, the caller can 8320still use the original mechanism and pre-allocate the buffer(s). 8321 8322Implemented support for string operands within the DerefOf 8323operator. 8324 8325Restructured the Hardware and Event managers to be table driven, 8326simplifying the source code and reducing the amount of generated 8327code. 8328 8329Split the common read/write low-level ACPI register bitfield 8330procedure into a separate read and write, simplifying the code 8331considerably. 8332 8333Obsoleted the AcpiOsCallocate OSL interface. This interface was 8334used only a handful of times and didn't have enough critical mass 8335for a separate interface. Replaced with a common calloc procedure 8336in the core. 8337 8338Fixed a reported problem with the GPE number mapping mechanism 8339that allows GPE1 numbers to be non-contiguous with GPE0. 8340Reorganized the GPE information and shrunk a large array that was 8341originally large enough to hold info for all possible GPEs (256) 8342to simply large enough to hold all GPEs up to the largest GPE 8343number on the machine. 8344 8345Fixed a reported problem with resource structure alignment on 64- 8346bit platforms. 8347 8348Changed the AcpiEnableEvent and AcpiDisableEvent external 8349interfaces to not require any flags for the common case of 8350enabling/disabling a GPE. 8351 8352Implemented support to allow a "Notify" on a Processor object. 8353 8354Most TBDs in comments within the source code have been resolved 8355and eliminated. 8356 8357 8358Fixed a problem in the interpreter where a standalone parent 8359prefix (^) was not handled correctly in the interpreter and 8360debugger. 8361 8362Removed obsolete and unnecessary GPE save/restore code. 8363 8364Implemented Field support in the ASL Load operator. This allows a 8365table to be loaded from a named field, in addition to loading a 8366table directly from an Operation Region. 8367 8368Implemented timeout and handle support in the external Global Lock 8369interfaces. 8370 8371Fixed a problem in the AcpiDump utility where pathnames were no 8372longer being generated correctly during the dump of named objects. 8373 8374Modified the AML debugger to give a full display of if/while 8375predicates instead of just one AML opcode at a time. (The 8376predicate can have several nested ASL statements.) The old method 8377was confusing during single stepping. 8378 8379Code and Data Size: Current core subsystem library sizes are shown 8380below. These are the code and data sizes for the acpica.lib 8381produced by the Microsoft Visual C++ 6.0 compiler, and these 8382values do not include any ACPI driver or OSPM code. The debug 8383version of the code includes the debug output trace mechanism and 8384has a larger code and data size. Note that these values will vary 8385depending on the efficiency of the compiler and the compiler 8386options used during generation. 8387 8388 Previous Release (12_18_01) 8389 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8390 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8391 Current Release: 8392 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8393 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8394 83952) Linux 8396 8397 Implemented fix for PIIX reverse throttling errata (Processor 8398driver) 8399 8400Added new Limit interface (Processor and Thermal drivers) 8401 8402New thermal policy (Thermal driver) 8403 8404Many updates to /proc 8405 8406Battery "low" event support (Battery driver) 8407 8408Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8409 8410IA32 - IA64 initialization unification, no longer experimental 8411 8412Menuconfig options redesigned 8413 84143) ASL Compiler, version X2037: 8415 8416Implemented several new output features to simplify integration of 8417AML code into firmware: 1) Output the AML in C source code with 8418labels for each named ASL object. The original ASL source code 8419is interleaved as C comments. 2) Output the AML in ASM source code 8420with labels and interleaved ASL source. 3) Output the AML in 8421raw hex table form, in either C or ASM. 8422 8423Implemented support for optional string parameters to the 8424LoadTable operator. 8425 8426Completed support for embedded escape sequences within string 8427literals. The compiler now supports all single character escapes 8428as well as the Octal and Hex escapes. Note: the insertion of a 8429null byte into a string literal (via the hex/octal escape) causes 8430the string to be immediately terminated. A warning is issued. 8431 8432Fixed a problem where incorrect AML was generated for the case 8433where an ASL namepath consists of a single parent prefix ( 8434 8435) with no trailing name segments. 8436 8437The compiler has been successfully generated with a 64-bit C 8438compiler. 8439 8440 8441 8442 8443---------------------------------------- 8444Summary of changes for this label: 12_18_01 8445 84461) Linux 8447 8448Enhanced blacklist with reason and severity fields. Any table's 8449signature may now be used to identify a blacklisted system. 8450 8451Call _PIC control method to inform the firmware which interrupt 8452model the OS is using. Turn on any disabled link devices. 8453 8454Cleaned up busmgr /proc error handling (Andreas Dilger) 8455 8456 2) ACPI CA Core Subsystem: 8457 8458Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8459while loop) 8460 8461Completed implementation of the ACPI 2.0 "Continue", 8462"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8463operators. All new ACPI 2.0 operators are now implemented in both 8464the ASL compiler and the AML interpreter. The only remaining ACPI 84652.0 task is support for the String data type in the DerefOf 8466operator. Fixed a problem with AcquireMutex where the status code 8467was lost if the caller had to actually wait for the mutex. 8468 8469Increased the maximum ASL Field size from 64K bits to 4G bits. 8470 8471Completed implementation of the external Global Lock interfaces -- 8472AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8473Handler parameters were added. 8474 8475Completed another pass at removing warnings and issues when 8476compiling with 64-bit compilers. The code now compiles cleanly 8477with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8478add and subtract (diff) macros have changed considerably. 8479 8480 8481Created and deployed a new ACPI_SIZE type that is 64-bits wide on 848264-bit platforms, 32-bits on all others. This type is used 8483wherever memory allocation and/or the C sizeof() operator is used, 8484and affects the OSL memory allocation interfaces AcpiOsAllocate 8485and AcpiOsCallocate. 8486 8487Implemented sticky user breakpoints in the AML debugger. 8488 8489Code and Data Size: Current core subsystem library sizes are shown 8490below. These are the code and data sizes for the acpica.lib 8491produced by the Microsoft Visual C++ 6.0 compiler, and these 8492values do not include any ACPI driver or OSPM code. The debug 8493version of the code includes the debug output trace mechanism and 8494has a larger code and data size. Note that these values will vary 8495depending on the efficiency of the compiler and the compiler 8496options used during generation. 8497 8498 Previous Release (12_05_01) 8499 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8500 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8501 Current Release: 8502 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8503 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8504 8505 3) ASL Compiler, version X2034: 8506 8507Now checks for (and generates an error if detected) the use of a 8508Break or Continue statement without an enclosing While statement. 8509 8510 8511Successfully generated the compiler with the Intel 64-bit C 8512compiler. 8513 8514 ---------------------------------------- 8515Summary of changes for this label: 12_05_01 8516 8517 1) ACPI CA Core Subsystem: 8518 8519The ACPI 2.0 CopyObject operator is fully implemented. This 8520operator creates a new copy of an object (and is also used to 8521bypass the "implicit conversion" mechanism of the Store operator.) 8522 8523The ACPI 2.0 semantics for the SizeOf operator are fully 8524implemented. The change is that performing a SizeOf on a 8525reference object causes an automatic dereference of the object to 8526tha actual value before the size is evaluated. This behavior was 8527undefined in ACPI 1.0. 8528 8529The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8530have been implemented. The interrupt polarity and mode are now 8531independently set. 8532 8533Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8534appearing in Package objects were not properly converted to 8535integers when the internal Package was converted to an external 8536object (via the AcpiEvaluateObject interface.) 8537 8538Fixed a problem with the namespace object deletion mechanism for 8539objects created by control methods. There were two parts to this 8540problem: 1) Objects created during the initialization phase method 8541parse were not being deleted, and 2) The object owner ID mechanism 8542to track objects was broken. 8543 8544Fixed a problem where the use of the ASL Scope operator within a 8545control method would result in an invalid opcode exception. 8546 8547Fixed a problem introduced in the previous label where the buffer 8548length required for the _PRT structure was not being returned 8549correctly. 8550 8551Code and Data Size: Current core subsystem library sizes are shown 8552below. These are the code and data sizes for the acpica.lib 8553produced by the Microsoft Visual C++ 6.0 compiler, and these 8554values do not include any ACPI driver or OSPM code. The debug 8555version of the code includes the debug output trace mechanism and 8556has a larger code and data size. Note that these values will vary 8557depending on the efficiency of the compiler and the compiler 8558options used during generation. 8559 8560 Previous Release (11_20_01) 8561 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8562 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8563 8564 Current Release: 8565 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8566 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8567 8568 2) Linux: 8569 8570Updated all files to apply cleanly against 2.4.16. 8571 8572Added basic PCI Interrupt Routing Table (PRT) support for IA32 8573(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8574version supports both static and dyanmic PRT entries, but dynamic 8575entries are treated as if they were static (not yet 8576reconfigurable). Architecture- specific code to use this data is 8577absent on IA32 but should be available shortly. 8578 8579Changed the initialization sequence to start the ACPI interpreter 8580(acpi_init) prior to initialization of the PCI driver (pci_init) 8581in init/main.c. This ordering is required to support PRT and 8582facilitate other (future) enhancement. A side effect is that the 8583ACPI bus driver and certain device drivers can no longer be loaded 8584as modules. 8585 8586Modified the 'make menuconfig' options to allow PCI Interrupt 8587Routing support to be included without the ACPI Bus and other 8588device drivers. 8589 8590 3) ASL Compiler, version X2033: 8591 8592Fixed some issues with the use of the new CopyObject and 8593DataTableRegion operators. Both are fully functional. 8594 8595 ---------------------------------------- 8596Summary of changes for this label: 11_20_01 8597 8598 20 November 2001. Summary of changes for this release. 8599 8600 1) ACPI CA Core Subsystem: 8601 8602Updated Index support to match ACPI 2.0 semantics. Storing a 8603Integer, String, or Buffer to an Index of a Buffer will store only 8604the least-significant byte of the source to the Indexed buffer 8605byte. Multiple writes are not performed. 8606 8607Fixed a problem where the access type used in an AccessAs ASL 8608operator was not recorded correctly into the field object. 8609 8610Fixed a problem where ASL Event objects were created in a 8611signalled state. Events are now created in an unsignalled state. 8612 8613The internal object cache is now purged after table loading and 8614initialization to reduce the use of dynamic kernel memory -- on 8615the assumption that object use is greatest during the parse phase 8616of the entire table (versus the run-time use of individual control 8617methods.) 8618 8619ACPI 2.0 variable-length packages are now fully operational. 8620 8621Code and Data Size: Code and Data optimizations have permitted new 8622feature development with an actual reduction in the library size. 8623Current core subsystem library sizes are shown below. These are 8624the code and data sizes for the acpica.lib produced by the 8625Microsoft Visual C++ 6.0 compiler, and these values do not include 8626any ACPI driver or OSPM code. The debug version of the code 8627includes the debug output trace mechanism and has a larger code 8628and data size. Note that these values will vary depending on the 8629efficiency of the compiler and the compiler options used during 8630generation. 8631 8632 Previous Release (11_09_01): 8633 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8634 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8635 8636 Current Release: 8637 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8638 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8639 8640 2) Linux: 8641 8642Enhanced the ACPI boot-time initialization code to allow the use 8643of Local APIC tables for processor enumeration on IA-32, and to 8644pave the way for a fully MPS-free boot (on SMP systems) in the 8645near future. This functionality replaces 8646arch/i386/kernel/acpitables.c, which was introduced in an earlier 86472.4.15-preX release. To enable this feature you must add 8648"acpi_boot=on" to the kernel command line -- see the help entry 8649for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8650the works... 8651 8652Restructured the configuration options to allow boot-time table 8653parsing support without inclusion of the ACPI Interpreter (and 8654other) code. 8655 8656NOTE: This release does not include fixes for the reported events, 8657power-down, and thermal passive cooling issues (coming soon). 8658 8659 3) ASL Compiler: 8660 8661Added additional typechecking for Fields within restricted access 8662Operation Regions. All fields within EC and CMOS regions must be 8663declared with ByteAcc. All fields withing SMBus regions must be 8664declared with the BufferAcc access type. 8665 8666Fixed a problem where the listing file output of control methods 8667no longer interleaved the actual AML code with the ASL source 8668code. 8669 8670 8671 8672 8673---------------------------------------- 8674Summary of changes for this label: 11_09_01 8675 86761) ACPI CA Core Subsystem: 8677 8678Implemented ACPI 2.0-defined support for writes to fields with a 8679Buffer, String, or Integer source operand that is smaller than the 8680target field. In these cases, the source operand is zero-extended 8681to fill the target field. 8682 8683Fixed a problem where a Field starting bit offset (within the 8684parent operation region) was calculated incorrectly if the 8685 8686alignment of the field differed from the access width. This 8687affected CreateWordField, CreateDwordField, CreateQwordField, and 8688possibly other fields that use the "AccessAny" keyword. 8689 8690Fixed a problem introduced in the 11_02_01 release where indirect 8691stores through method arguments did not operate correctly. 8692 86932) Linux: 8694 8695Implemented boot-time ACPI table parsing support 8696(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8697facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8698legacy BIOS interfaces (e.g. MPS) for the configuration of system 8699processors, memory, and interrupts during setup_arch(). Note that 8700this patch does not include the required architecture-specific 8701changes required to apply this information -- subsequent patches 8702will be posted for both IA32 and IA64 to achieve this. 8703 8704Added low-level sleep support for IA32 platforms, courtesy of Pat 8705Mochel. This allows IA32 systems to transition to/from various 8706sleeping states (e.g. S1, S3), although the lack of a centralized 8707driver model and power-manageable drivers will prevent its 8708(successful) use on most systems. 8709 8710Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8711submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8712tables" option, etc. 8713 8714Increased the default timeout for the EC driver from 1ms to 10ms 8715(1000 cycles of 10us) to try to address AE_TIME errors during EC 8716transactions. 8717 8718 ---------------------------------------- 8719Summary of changes for this label: 11_02_01 8720 87211) ACPI CA Core Subsystem: 8722 8723ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8724(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8725implemented. 8726 8727OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8728changes to support ACPI 2.0 Qword field access. Read/Write 8729PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8730accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8731the value parameter for the address space handler interface is now 8732an ACPI_INTEGER. OSL implementations of these interfaces must now 8733handle the case where the Width parameter is 64. 8734 8735Index Fields: Fixed a problem where unaligned bit assembly and 8736disassembly for IndexFields was not supported correctly. 8737 8738Index and Bank Fields: Nested Index and Bank Fields are now 8739supported. During field access, a check is performed to ensure 8740that the value written to an Index or Bank register is not out of 8741the range of the register. The Index (or Bank) register is 8742written before each access to the field data. Future support will 8743include allowing individual IndexFields to be wider than the 8744DataRegister width. 8745 8746Fields: Fixed a problem where the AML interpreter was incorrectly 8747attempting to write beyond the end of a Field/OpRegion. This was 8748a boundary case that occurred when a DWORD field was written to a 8749BYTE access OpRegion, forcing multiple writes and causing the 8750interpreter to write one datum too many. 8751 8752Fields: Fixed a problem with Field/OpRegion access where the 8753starting bit address of a field was incorrectly calculated if the 8754current access type was wider than a byte (WordAcc, DwordAcc, or 8755QwordAcc). 8756 8757Fields: Fixed a problem where forward references to individual 8758FieldUnits (individual Field names within a Field definition) were 8759not resolved during the AML table load. 8760 8761Fields: Fixed a problem where forward references from a Field 8762definition to the parent Operation Region definition were not 8763resolved during the AML table load. 8764 8765Fields: Duplicate FieldUnit names within a scope are now detected 8766during AML table load. 8767 8768Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8769returned an incorrect name for the root node. 8770 8771Code and Data Size: Code and Data optimizations have permitted new 8772feature development with an actual reduction in the library size. 8773Current core subsystem library sizes are shown below. These are 8774the code and data sizes for the acpica.lib produced by the 8775Microsoft Visual C++ 6.0 compiler, and these values do not include 8776any ACPI driver or OSPM code. The debug version of the code 8777includes the debug output trace mechanism and has a larger code 8778and data size. Note that these values will vary depending on the 8779efficiency of the compiler and the compiler options used during 8780generation. 8781 8782 Previous Release (10_18_01): 8783 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8784 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8785 8786 Current Release: 8787 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8788 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8789 8790 2) Linux: 8791 8792Improved /proc processor output (Pavel Machek) Re-added 8793MODULE_LICENSE("GPL") to all modules. 8794 8795 3) ASL Compiler version X2030: 8796 8797Duplicate FieldUnit names within a scope are now detected and 8798flagged as errors. 8799 8800 4) Documentation: 8801 8802Programmer Reference updated to reflect OSL and address space 8803handler interface changes described above. 8804 8805---------------------------------------- 8806Summary of changes for this label: 10_18_01 8807 8808ACPI CA Core Subsystem: 8809 8810Fixed a problem with the internal object reference count mechanism 8811that occasionally caused premature object deletion. This resolves 8812all of the outstanding problem reports where an object is deleted 8813in the middle of an interpreter evaluation. Although this problem 8814only showed up in rather obscure cases, the solution to the 8815problem involved an adjustment of all reference counts involving 8816objects attached to namespace nodes. 8817 8818Fixed a problem with Field support in the interpreter where 8819writing to an aligned field whose length is an exact multiple (2 8820or greater) of the field access granularity would cause an attempt 8821to write beyond the end of the field. 8822 8823The top level AML opcode execution functions within the 8824interpreter have been renamed with a more meaningful and 8825consistent naming convention. The modules exmonad.c and 8826exdyadic.c were eliminated. New modules are exoparg1.c, 8827exoparg2.c, exoparg3.c, and exoparg6.c. 8828 8829Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8830 8831Fixed a problem where the AML debugger was causing some internal 8832objects to not be deleted during subsystem termination. 8833 8834Fixed a problem with the external AcpiEvaluateObject interface 8835where the subsystem would fault if the named object to be 8836evaluated refered to a constant such as Zero, Ones, etc. 8837 8838Fixed a problem with IndexFields and BankFields where the 8839subsystem would fault if the index, data, or bank registers were 8840not defined in the same scope as the field itself. 8841 8842Added printf format string checking for compilers that support 8843this feature. Corrected more than 50 instances of issues with 8844format specifiers within invocations of ACPI_DEBUG_PRINT 8845throughout the core subsystem code. 8846 8847The ASL "Revision" operator now returns the ACPI support level 8848implemented in the core - the value "2" since the ACPI 2.0 support 8849is more than 50% implemented. 8850 8851Enhanced the output of the AML debugger "dump namespace" command 8852to output in a more human-readable form. 8853 8854Current core subsystem library code sizes are shown below. These 8855 8856are the code and data sizes for the acpica.lib produced by the 8857Microsoft Visual C++ 6.0 compiler, and these values do not include 8858any ACPI driver or OSPM code. The debug version of the code 8859includes the full debug trace mechanism -- leading to a much 8860 8861larger code and data size. Note that these values will vary 8862depending on the efficiency of the compiler and the compiler 8863options used during generation. 8864 8865 Previous Label (09_20_01): 8866 Non-Debug Version: 65K Code, 5K Data, 70K Total 8867 Debug Version: 138K Code, 58K Data, 196K Total 8868 8869 This Label: 8870 8871 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8872 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8873 8874Linux: 8875 8876Implemented a "Bad BIOS Blacklist" to track machines that have 8877known ASL/AML problems. 8878 8879Enhanced the /proc interface for the thermal zone driver and added 8880support for _HOT (the critical suspend trip point). The 'info' 8881file now includes threshold/policy information, and allows setting 8882of _SCP (cooling preference) and _TZP (polling frequency) values 8883to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 8884frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 8885preference to the passive/quiet mode (if supported by the ASL). 8886 8887Implemented a workaround for a gcc bug that resuted in an OOPs 8888when loading the control method battery driver. 8889 8890 ---------------------------------------- 8891Summary of changes for this label: 09_20_01 8892 8893 ACPI CA Core Subsystem: 8894 8895The AcpiEnableEvent and AcpiDisableEvent interfaces have been 8896modified to allow individual GPE levels to be flagged as wake- 8897enabled (i.e., these GPEs are to remain enabled when the platform 8898sleeps.) 8899 8900The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 8901support wake-enabled GPEs. This means that upon entering the 8902sleep state, all GPEs that are not wake-enabled are disabled. 8903When leaving the sleep state, these GPEs are reenabled. 8904 8905A local double-precision divide/modulo module has been added to 8906enhance portability to OS kernels where a 64-bit math library is 8907not available. The new module is "utmath.c". 8908 8909Several optimizations have been made to reduce the use of CPU 8910stack. Originally over 2K, the maximum stack usage is now below 89112K at 1860 bytes (1.82k) 8912 8913Fixed a problem with the AcpiGetFirmwareTable interface where the 8914root table pointer was not mapped into a logical address properly. 8915 8916Fixed a problem where a NULL pointer was being dereferenced in the 8917interpreter code for the ASL Notify operator. 8918 8919Fixed a problem where the use of the ASL Revision operator 8920returned an error. This operator now returns the current version 8921of the ACPI CA core subsystem. 8922 8923Fixed a problem where objects passed as control method parameters 8924to AcpiEvaluateObject were always deleted at method termination. 8925However, these objects may end up being stored into the namespace 8926by the called method. The object reference count mechanism was 8927applied to these objects instead of a force delete. 8928 8929Fixed a problem where static strings or buffers (contained in the 8930AML code) that are declared as package elements within the ASL 8931code could cause a fault because the interpreter would attempt to 8932delete them. These objects are now marked with the "static 8933object" flag to prevent any attempt to delete them. 8934 8935Implemented an interpreter optimization to use operands directly 8936from the state object instead of extracting the operands to local 8937variables. This reduces stack use and code size, and improves 8938performance. 8939 8940The module exxface.c was eliminated as it was an unnecessary extra 8941layer of code. 8942 8943Current core subsystem library code sizes are shown below. These 8944are the code and data sizes for the acpica.lib produced by the 8945Microsoft Visual C++ 6.0 compiler, and these values do not include 8946any ACPI driver or OSPM code. The debug version of the code 8947includes the full debug trace mechanism -- leading to a much 8948larger code and data size. Note that these values will vary 8949depending on the efficiency of the compiler and the compiler 8950options used during generation. 8951 8952 Non-Debug Version: 65K Code, 5K Data, 70K Total 8953(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 8954Total (Previously 195K) 8955 8956Linux: 8957 8958Support for ACPI 2.0 64-bit integers has been added. All ACPI 8959Integer objects are now 64 bits wide 8960 8961All Acpi data types and structures are now in lower case. Only 8962Acpi macros are upper case for differentiation. 8963 8964 Documentation: 8965 8966Changes to the external interfaces as described above. 8967 8968 ---------------------------------------- 8969Summary of changes for this label: 08_31_01 8970 8971 ACPI CA Core Subsystem: 8972 8973A bug with interpreter implementation of the ASL Divide operator 8974was found and fixed. The implicit function return value (not the 8975explicit store operands) was returning the remainder instead of 8976the quotient. This was a longstanding bug and it fixes several 8977known outstanding issues on various platforms. 8978 8979The ACPI_DEBUG_PRINT and function trace entry/exit macros have 8980been further optimized for size. There are 700 invocations of the 8981DEBUG_PRINT macro alone, so each optimization reduces the size of 8982the debug version of the subsystem significantly. 8983 8984A stack trace mechanism has been implemented. The maximum stack 8985usage is about 2K on 32-bit platforms. The debugger command "stat 8986stack" will display the current maximum stack usage. 8987 8988All public symbols and global variables within the subsystem are 8989now prefixed with the string "Acpi". This keeps all of the 8990symbols grouped together in a kernel map, and avoids conflicts 8991with other kernel subsystems. 8992 8993Most of the internal fixed lookup tables have been moved into the 8994code segment via the const operator. 8995 8996Several enhancements have been made to the interpreter to both 8997reduce the code size and improve performance. 8998 8999Current core subsystem library code sizes are shown below. These 9000are the code and data sizes for the acpica.lib produced by the 9001Microsoft Visual C++ 6.0 compiler, and these values do not include 9002any ACPI driver or OSPM code. The debug version of the code 9003includes the full debug trace mechanism which contains over 700 9004invocations of the DEBUG_PRINT macro, 500 function entry macro 9005invocations, and over 900 function exit macro invocations -- 9006leading to a much larger code and data size. Note that these 9007values will vary depending on the efficiency of the compiler and 9008the compiler options used during generation. 9009 9010 Non-Debug Version: 64K Code, 5K Data, 69K Total 9011Debug Version: 137K Code, 58K Data, 195K Total 9012 9013 Linux: 9014 9015Implemented wbinvd() macro, pending a kernel-wide definition. 9016 9017Fixed /proc/acpi/event to handle poll() and short reads. 9018 9019 ASL Compiler, version X2026: 9020 9021Fixed a problem introduced in the previous label where the AML 9022 9023code emitted for package objects produced packages with zero 9024length. 9025 9026 ---------------------------------------- 9027Summary of changes for this label: 08_16_01 9028 9029ACPI CA Core Subsystem: 9030 9031The following ACPI 2.0 ASL operators have been implemented in the 9032AML interpreter (These are already supported by the Intel ASL 9033compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9034ToBuffer. Support for 64-bit AML constants is implemented in the 9035AML parser, debugger, and disassembler. 9036 9037The internal memory tracking mechanism (leak detection code) has 9038been upgraded to reduce the memory overhead (a separate tracking 9039block is no longer allocated for each memory allocation), and now 9040supports all of the internal object caches. 9041 9042The data structures and code for the internal object caches have 9043been coelesced and optimized so that there is a single cache and 9044memory list data structure and a single group of functions that 9045implement generic cache management. This has reduced the code 9046size in both the debug and release versions of the subsystem. 9047 9048The DEBUG_PRINT macro(s) have been optimized for size and replaced 9049by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9050different, because it generates a single call to an internal 9051function. This results in a savings of about 90 bytes per 9052invocation, resulting in an overall code and data savings of about 905316% in the debug version of the subsystem. 9054 9055 Linux: 9056 9057Fixed C3 disk corruption problems and re-enabled C3 on supporting 9058machines. 9059 9060Integrated low-level sleep code by Patrick Mochel. 9061 9062Further tweaked source code Linuxization. 9063 9064Other minor fixes. 9065 9066 ASL Compiler: 9067 9068Support for ACPI 2.0 variable length packages is fixed/completed. 9069 9070Fixed a problem where the optional length parameter for the ACPI 90712.0 ToString operator. 9072 9073Fixed multiple extraneous error messages when a syntax error is 9074detected within the declaration line of a control method. 9075 9076 ---------------------------------------- 9077Summary of changes for this label: 07_17_01 9078 9079ACPI CA Core Subsystem: 9080 9081Added a new interface named AcpiGetFirmwareTable to obtain any 9082ACPI table via the ACPI signature. The interface can be called at 9083any time during kernel initialization, even before the kernel 9084virtual memory manager is initialized and paging is enabled. This 9085allows kernel subsystems to obtain ACPI tables very early, even 9086before the ACPI CA subsystem is initialized. 9087 9088Fixed a problem where Fields defined with the AnyAcc attribute 9089could be resolved to the incorrect address under the following 9090conditions: 1) the field width is larger than 8 bits and 2) the 9091parent operation region is not defined on a DWORD boundary. 9092 9093Fixed a problem where the interpreter is not being locked during 9094namespace initialization (during execution of the _INI control 9095methods), causing an error when an attempt is made to release it 9096later. 9097 9098ACPI 2.0 support in the AML Interpreter has begun and will be 9099ongoing throughout the rest of this year. In this label, The Mod 9100operator is implemented. 9101 9102Added a new data type to contain full PCI addresses named 9103ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9104and Function values. 9105 9106 Linux: 9107 9108Enhanced the Linux version of the source code to change most 9109capitalized ACPI type names to lowercase. For example, all 9110instances of ACPI_STATUS are changed to acpi_status. This will 9111result in a large diff, but the change is strictly cosmetic and 9112aligns the CA code closer to the Linux coding standard. 9113 9114OSL Interfaces: 9115 9116The interfaces to the PCI configuration space have been changed to 9117add the PCI Segment number and to split the single 32-bit combined 9118DeviceFunction field into two 16-bit fields. This was 9119accomplished by moving the four values that define an address in 9120PCI configuration space (segment, bus, device, and function) to 9121the new ACPI_PCI_ID structure. 9122 9123The changes to the PCI configuration space interfaces led to a 9124reexamination of the complete set of address space access 9125interfaces for PCI, I/O, and Memory. The previously existing 18 9126interfaces have proven difficult to maintain (any small change 9127must be propagated across at least 6 interfaces) and do not easily 9128allow for future expansion to 64 bits if necessary. Also, on some 9129systems, it would not be appropriate to demultiplex the access 9130width (8, 16, 32,or 64) before calling the OSL if the 9131corresponding native OS interfaces contain a similar access width 9132parameter. For these reasons, the 18 address space interfaces 9133have been replaced by these 6 new ones: 9134 9135AcpiOsReadPciConfiguration 9136AcpiOsWritePciConfiguration 9137AcpiOsReadMemory 9138AcpiOsWriteMemory 9139AcpiOsReadPort 9140AcpiOsWritePort 9141 9142Added a new interface named AcpiOsGetRootPointer to allow the OSL 9143to perform the platform and/or OS-specific actions necessary to 9144obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9145interface will simply call down to the CA core to perform the low- 9146memory search for the table. On IA-64, the RSDP is obtained from 9147EFI. Migrating this interface to the OSL allows the CA core to 9148 9149remain OS and platform independent. 9150 9151Added a new interface named AcpiOsSignal to provide a generic 9152"function code and pointer" interface for various miscellaneous 9153signals and notifications that must be made to the host OS. The 9154first such signals are intended to support the ASL Fatal and 9155Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9156interface has been obsoleted. 9157 9158The definition of the AcpiFormatException interface has been 9159changed to simplify its use. The caller no longer must supply a 9160buffer to the call; A pointer to a const string is now returned 9161directly. This allows the call to be easily used in printf 9162statements, etc. since the caller does not have to manage a local 9163buffer. 9164 9165 9166 ASL Compiler, Version X2025: 9167 9168The ACPI 2.0 Switch/Case/Default operators have been implemented 9169and are fully functional. They will work with all ACPI 1.0 9170interpreters, since the operators are simply translated to If/Else 9171pairs. 9172 9173The ACPI 2.0 ElseIf operator is implemented and will also work 9174with 1.0 interpreters, for the same reason. 9175 9176Implemented support for ACPI 2.0 variable-length packages. These 9177packages have a separate opcode, and their size is determined by 9178the interpreter at run-time. 9179 9180Documentation The ACPI CA Programmer Reference has been updated to 9181reflect the new interfaces and changes to existing interfaces. 9182 9183 ------------------------------------------ 9184Summary of changes for this label: 06_15_01 9185 9186 ACPI CA Core Subsystem: 9187 9188Fixed a problem where a DWORD-accessed field within a Buffer 9189object would get its byte address inadvertently rounded down to 9190the nearest DWORD. Buffers are always Byte-accessible. 9191 9192 ASL Compiler, version X2024: 9193 9194Fixed a problem where the Switch() operator would either fault or 9195hang the compiler. Note however, that the AML code for this ACPI 91962.0 operator is not yet implemented. 9197 9198Compiler uses the new AcpiOsGetTimer interface to obtain compile 9199timings. 9200 9201Implementation of the CreateField operator automatically converts 9202a reference to a named field within a resource descriptor from a 9203byte offset to a bit offset if required. 9204 9205Added some missing named fields from the resource descriptor 9206support. These are the names that are automatically created by the 9207compiler to reference fields within a descriptor. They are only 9208valid at compile time and are not passed through to the AML 9209interpreter. 9210 9211Resource descriptor named fields are now typed as Integers and 9212subject to compile-time typechecking when used in expressions. 9213 9214 ------------------------------------------ 9215Summary of changes for this label: 05_18_01 9216 9217 ACPI CA Core Subsystem: 9218 9219Fixed a couple of problems in the Field support code where bits 9220from adjacent fields could be returned along with the proper field 9221bits. Restructured the field support code to improve performance, 9222readability and maintainability. 9223 9224New DEBUG_PRINTP macro automatically inserts the procedure name 9225into the output, saving hundreds of copies of procedure name 9226strings within the source, shrinking the memory footprint of the 9227debug version of the core subsystem. 9228 9229 Source Code Structure: 9230 9231The source code directory tree was restructured to reflect the 9232current organization of the component architecture. Some files 9233and directories have been moved and/or renamed. 9234 9235 Linux: 9236 9237Fixed leaking kacpidpc processes. 9238 9239Fixed queueing event data even when /proc/acpi/event is not 9240opened. 9241 9242 ASL Compiler, version X2020: 9243 9244Memory allocation performance enhancement - over 24X compile time 9245improvement on large ASL files. Parse nodes and namestring 9246buffers are now allocated from a large internal compiler buffer. 9247 9248The temporary .SRC file is deleted unless the "-s" option is 9249specified 9250 9251The "-d" debug output option now sends all output to the .DBG file 9252instead of the console. 9253 9254"External" second parameter is now optional 9255 9256"ElseIf" syntax now properly allows the predicate 9257 9258Last operand to "Load" now recognized as a Target operand 9259 9260Debug object can now be used anywhere as a normal object. 9261 9262ResourceTemplate now returns an object of type BUFFER 9263 9264EISAID now returns an object of type INTEGER 9265 9266"Index" now works with a STRING operand 9267 9268"LoadTable" now accepts optional parameters 9269 9270"ToString" length parameter is now optional 9271 9272"Interrupt (ResourceType," parse error fixed. 9273 9274"Register" with a user-defined region space parse error fixed 9275 9276Escaped backslash at the end of a string ("\\") scan/parse error 9277fixed 9278 9279"Revision" is now an object of type INTEGER. 9280 9281 9282 9283------------------------------------------ 9284Summary of changes for this label: 05_02_01 9285 9286Linux: 9287 9288/proc/acpi/event now blocks properly. 9289 9290Removed /proc/sys/acpi. You can still dump your DSDT from 9291/proc/acpi/dsdt. 9292 9293 ACPI CA Core Subsystem: 9294 9295Fixed a problem introduced in the previous label where some of the 9296"small" resource descriptor types were not recognized. 9297 9298Improved error messages for the case where an ASL Field is outside 9299the range of the parent operation region. 9300 9301 ASL Compiler, version X2018: 9302 9303 9304Added error detection for ASL Fields that extend beyond the length 9305of the parent operation region (only if the length of the region 9306is known at compile time.) This includes fields that have a 9307minimum access width that is smaller than the parent region, and 9308individual field units that are partially or entirely beyond the 9309extent of the parent. 9310 9311 9312 9313------------------------------------------ 9314Summary of changes for this label: 04_27_01 9315 9316 ACPI CA Core Subsystem: 9317 9318Fixed a problem where the namespace mutex could be released at the 9319wrong time during execution of AcpiRemoveAddressSpaceHandler. 9320 9321Added optional thread ID output for debug traces, to simplify 9322debugging of multiple threads. Added context switch notification 9323when the debug code realizes that a different thread is now 9324executing ACPI code. 9325 9326Some additional external data types have been prefixed with the 9327string "ACPI_" for consistency. This may effect existing code. 9328The data types affected are the external callback typedefs - e.g., 9329 9330WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9331 9332 Linux: 9333 9334Fixed an issue with the OSL semaphore implementation where a 9335thread was waking up with an error from receiving a SIGCHLD 9336signal. 9337 9338Linux version of ACPI CA now uses the system C library for string 9339manipulation routines instead of a local implementation. 9340 9341Cleaned up comments and removed TBDs. 9342 9343 ASL Compiler, version X2017: 9344 9345Enhanced error detection and reporting for all file I/O 9346operations. 9347 9348 Documentation: 9349 9350Programmer Reference updated to version 1.06. 9351 9352 9353 9354------------------------------------------ 9355Summary of changes for this label: 04_13_01 9356 9357 ACPI CA Core Subsystem: 9358 9359Restructured support for BufferFields and RegionFields. 9360BankFields support is now fully operational. All known 32-bit 9361limitations on field sizes have been removed. Both BufferFields 9362and (Operation) RegionFields are now supported by the same field 9363management code. 9364 9365Resource support now supports QWORD address and IO resources. The 936616/32/64 bit address structures and the Extended IRQ structure 9367have been changed to properly handle Source Resource strings. 9368 9369A ThreadId of -1 is now used to indicate a "mutex not acquired" 9370condition internally and must never be returned by AcpiOsThreadId. 9371This reserved value was changed from 0 since Unix systems allow a 9372thread ID of 0. 9373 9374Linux: 9375 9376Driver code reorganized to enhance portability 9377 9378Added a kernel configuration option to control ACPI_DEBUG 9379 9380Fixed the EC driver to honor _GLK. 9381 9382ASL Compiler, version X2016: 9383 9384Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9385address space was set to 0, not 0x7f as it should be. 9386 9387 ------------------------------------------ 9388Summary of changes for this label: 03_13_01 9389 9390 ACPI CA Core Subsystem: 9391 9392During ACPI initialization, the _SB_._INI method is now run if 9393present. 9394 9395Notify handler fix - notifies are deferred until the parent method 9396completes execution. This fixes the "mutex already acquired" 9397issue seen occasionally. 9398 9399Part of the "implicit conversion" rules in ACPI 2.0 have been 9400found to cause compatibility problems with existing ASL/AML. The 9401convert "result-to-target-type" implementation has been removed 9402for stores to method Args and Locals. Source operand conversion 9403is still fully implemented. Possible changes to ACPI 2.0 9404specification pending. 9405 9406Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9407length. 9408 9409Fix for compiler warnings for 64-bit compiles. 9410 9411 Linux: 9412 9413/proc output aligned for easier parsing. 9414 9415Release-version compile problem fixed. 9416 9417New kernel configuration options documented in Configure.help. 9418 9419IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9420context" message. 9421 9422 OSPM: 9423 9424Power resource driver integrated with bus manager. 9425 9426Fixed kernel fault during active cooling for thermal zones. 9427 9428Source Code: 9429 9430The source code tree has been restructured. 9431 9432 9433 9434------------------------------------------ 9435Summary of changes for this label: 03_02_01 9436 9437 Linux OS Services Layer (OSL): 9438 9439Major revision of all Linux-specific code. 9440 9441Modularized all ACPI-specific drivers. 9442 9443Added new thermal zone and power resource drivers. 9444 9445Revamped /proc interface (new functionality is under /proc/acpi). 9446 9447New kernel configuration options. 9448 9449 Linux known issues: 9450 9451New kernel configuration options not documented in Configure.help 9452yet. 9453 9454 9455Module dependencies not currently implemented. If used, they 9456should be loaded in this order: busmgr, power, ec, system, 9457processor, battery, ac_adapter, button, thermal. 9458 9459Modules will not load if CONFIG_MODVERSION is set. 9460 9461IBM 600E - entering S5 may reboot instead of shutting down. 9462 9463IBM 600E - Sleep button may generate "Invalid <NULL> context" 9464message. 9465 9466Some systems may fail with "execution mutex already acquired" 9467message. 9468 9469 ACPI CA Core Subsystem: 9470 9471Added a new OSL Interface, AcpiOsGetThreadId. This was required 9472for the deadlock detection code. Defined to return a non-zero, 32- 9473bit thread ID for the currently executing thread. May be a non- 9474zero constant integer on single-thread systems. 9475 9476Implemented deadlock detection for internal subsystem mutexes. We 9477may add conditional compilation for this code (debug only) later. 9478 9479ASL/AML Mutex object semantics are now fully supported. This 9480includes multiple acquires/releases by owner and support for the 9481 9482Mutex SyncLevel parameter. 9483 9484A new "Force Release" mechanism automatically frees all ASL 9485Mutexes that have been acquired but not released when a thread 9486exits the interpreter. This forces conformance to the ACPI spec 9487("All mutexes must be released when an invocation exits") and 9488prevents deadlocked ASL threads. This mechanism can be expanded 9489(later) to monitor other resource acquisitions if OEM ASL code 9490continues to misbehave (which it will). 9491 9492Several new ACPI exception codes have been added for the Mutex 9493support. 9494 9495Recursive method calls are now allowed and supported (the ACPI 9496spec does in fact allow recursive method calls.) The number of 9497recursive calls is subject to the restrictions imposed by the 9498SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9499parameter. 9500 9501Implemented support for the SyncLevel parameter for control 9502methods (ACPI 2.0 feature) 9503 9504Fixed a deadlock problem when multiple threads attempted to use 9505the interpreter. 9506 9507Fixed a problem where the string length of a String package 9508element was not always set in a package returned from 9509AcpiEvaluateObject. 9510 9511Fixed a problem where the length of a String package element was 9512not always included in the length of the overall package returned 9513from AcpiEvaluateObject. 9514 9515Added external interfaces (Acpi*) to the ACPI debug memory 9516manager. This manager keeps a list of all outstanding 9517allocations, and can therefore detect memory leaks and attempts to 9518free memory blocks more than once. Useful for code such as the 9519power manager, etc. May not be appropriate for device drivers. 9520Performance with the debug code enabled is slow. 9521 9522The ACPI Global Lock is now an optional hardware element. 9523 9524 ASL Compiler Version X2015: 9525 9526Integrated changes to allow the compiler to be generated on 9527multiple platforms. 9528 9529Linux makefile added to generate the compiler on Linux 9530 9531 Source Code: 9532 9533All platform-specific headers have been moved to their own 9534subdirectory, Include/Platform. 9535 9536New source file added, Interpreter/ammutex.c 9537 9538New header file, Include/acstruct.h 9539 9540 Documentation: 9541 9542The programmer reference has been updated for the following new 9543interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9544 9545 ------------------------------------------ 9546Summary of changes for this label: 02_08_01 9547 9548Core ACPI CA Subsystem: Fixed a problem where an error was 9549incorrectly returned if the return resource buffer was larger than 9550the actual data (in the resource interfaces). 9551 9552References to named objects within packages are resolved to the 9553 9554full pathname string before packages are returned directly (via 9555the AcpiEvaluateObject interface) or indirectly via the resource 9556interfaces. 9557 9558Linux OS Services Layer (OSL): 9559 9560Improved /proc battery interface. 9561 9562 9563Added C-state debugging output and other miscellaneous fixes. 9564 9565ASL Compiler Version X2014: 9566 9567All defined method arguments can now be used as local variables, 9568including the ones that are not actually passed in as parameters. 9569The compiler tracks initialization of the arguments and issues an 9570exception if they are used without prior assignment (just like 9571locals). 9572 9573The -o option now specifies a filename prefix that is used for all 9574output files, including the AML output file. Otherwise, the 9575default behavior is as follows: 1) the AML goes to the file 9576specified in the DSDT. 2) all other output files use the input 9577source filename as the base. 9578 9579 ------------------------------------------ 9580Summary of changes for this label: 01_25_01 9581 9582Core ACPI CA Subsystem: Restructured the implementation of object 9583store support within the interpreter. This includes support for 9584the Store operator as well as any ASL operators that include a 9585target operand. 9586 9587Partially implemented support for Implicit Result-to-Target 9588conversion. This is when a result object is converted on the fly 9589to the type of an existing target object. Completion of this 9590support is pending further analysis of the ACPI specification 9591concerning this matter. 9592 9593CPU-specific code has been removed from the subsystem (hardware 9594directory). 9595 9596New Power Management Timer functions added 9597 9598Linux OS Services Layer (OSL): Moved system state transition code 9599to the core, fixed it, and modified Linux OSL accordingly. 9600 9601Fixed C2 and C3 latency calculations. 9602 9603 9604We no longer use the compilation date for the version message on 9605initialization, but retrieve the version from AcpiGetSystemInfo(). 9606 9607Incorporated for fix Sony VAIO machines. 9608 9609Documentation: The Programmer Reference has been updated and 9610reformatted. 9611 9612 9613ASL Compiler: Version X2013: Fixed a problem where the line 9614numbering and error reporting could get out of sync in the 9615presence of multiple include files. 9616 9617 ------------------------------------------ 9618Summary of changes for this label: 01_15_01 9619 9620Core ACPI CA Subsystem: 9621 9622Implemented support for type conversions in the execution of the 9623ASL Concatenate operator (The second operand is converted to 9624match the type of the first operand before concatenation.) 9625 9626Support for implicit source operand conversion is partially 9627implemented. The ASL source operand types Integer, Buffer, and 9628String are freely interchangeable for most ASL operators and are 9629converted by the interpreter on the fly as required. Implicit 9630Target operand conversion (where the result is converted to the 9631target type before storing) is not yet implemented. 9632 9633Support for 32-bit and 64-bit BCD integers is implemented. 9634 9635Problem fixed where a field read on an aligned field could cause a 9636read past the end of the field. 9637 9638New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9639does not return a value, but the caller expects one. (The ASL 9640compiler flags this as a warning.) 9641 9642ASL Compiler: 9643 9644Version X2011: 96451. Static typechecking of all operands is implemented. This 9646prevents the use of invalid objects (such as using a Package where 9647an Integer is required) at compile time instead of at interpreter 9648run-time. 96492. The ASL source line is printed with ALL errors and warnings. 96503. Bug fix for source EOF without final linefeed. 96514. Debug option is split into a parse trace and a namespace trace. 96525. Namespace output option (-n) includes initial values for 9653integers and strings. 96546. Parse-only option added for quick syntax checking. 96557. Compiler checks for duplicate ACPI name declarations 9656 9657Version X2012: 96581. Relaxed typechecking to allow interchangeability between 9659strings, integers, and buffers. These types are now converted by 9660the interpreter at runtime. 96612. Compiler reports time taken by each internal subsystem in the 9662debug output file. 9663 9664 9665 ------------------------------------------ 9666Summary of changes for this label: 12_14_00 9667 9668ASL Compiler: 9669 9670This is the first official release of the compiler. Since the 9671compiler requires elements of the Core Subsystem, this label 9672synchronizes everything. 9673 9674------------------------------------------ 9675Summary of changes for this label: 12_08_00 9676 9677 9678Fixed a problem where named references within the ASL definition 9679of both OperationRegions and CreateXXXFields did not work 9680properly. The symptom was an AE_AML_OPERAND_TYPE during 9681initialization of the region/field. This is similar (but not 9682related internally) to the problem that was fixed in the last 9683label. 9684 9685Implemented both 32-bit and 64-bit support for the BCD ASL 9686functions ToBCD and FromBCD. 9687 9688Updated all legal headers to include "2000" in the copyright 9689years. 9690 9691 ------------------------------------------ 9692Summary of changes for this label: 12_01_00 9693 9694Fixed a problem where method invocations within the ASL definition 9695of both OperationRegions and CreateXXXFields did not work 9696properly. The symptom was an AE_AML_OPERAND_TYPE during 9697initialization of the region/field: 9698 9699 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9700[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9701(0x3005) 9702 9703Fixed a problem where operators with more than one nested 9704subexpression would fail. The symptoms were varied, by mostly 9705AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9706problem that has gone unnoticed until now. 9707 9708 Subtract (Add (1,2), Multiply (3,4)) 9709 9710Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9711previous build (The prefix part of a relative path was handled 9712incorrectly). 9713 9714Fixed a problem where Operation Region initialization failed if 9715the operation region name was a "namepath" instead of a simple 9716"nameseg". Symptom was an AE_NO_OPERAND error. 9717 9718Fixed a problem where an assignment to a local variable via the 9719indirect RefOf mechanism only worked for the first such 9720assignment. Subsequent assignments were ignored. 9721 9722 ------------------------------------------ 9723Summary of changes for this label: 11_15_00 9724 9725ACPI 2.0 table support with backwards support for ACPI 1.0 and the 97260.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9727the AML interpreter does NOT have support for the new 2.0 ASL 9728grammar terms at this time. 9729 9730All ACPI hardware access is via the GAS structures in the ACPI 2.0 9731FADT. 9732 9733All physical memory addresses across all platforms are now 64 bits 9734wide. Logical address width remains dependent on the platform 9735(i.e., "void *"). 9736 9737AcpiOsMapMemory interface changed to a 64-bit physical address. 9738 9739The AML interpreter integer size is now 64 bits, as per the ACPI 97402.0 specification. 9741 9742For backwards compatibility with ACPI 1.0, ACPI tables with a 9743revision number less than 2 use 32-bit integers only. 9744 9745Fixed a problem where the evaluation of OpRegion operands did not 9746always resolve them to numbers properly. 9747 9748------------------------------------------ 9749Summary of changes for this label: 10_20_00 9750 9751Fix for CBN_._STA issue. This fix will allow correct access to 9752CBN_ OpRegions when the _STA returns 0x8. 9753 9754Support to convert ACPI constants (Ones, Zeros, One) to actual 9755values before a package object is returned 9756 9757Fix for method call as predicate to if/while construct causing 9758incorrect if/while behavior 9759 9760Fix for Else block package lengths sometimes calculated wrong (if 9761block > 63 bytes) 9762 9763Fix for Processor object length field, was always zero 9764 9765Table load abort if FACP sanity check fails 9766 9767Fix for problem with Scope(name) if name already exists 9768 9769Warning emitted if a named object referenced cannot be found 9770(resolved) during method execution. 9771 9772 9773 9774 9775 9776------------------------------------------ 9777Summary of changes for this label: 9_29_00 9778 9779New table initialization interfaces: AcpiInitializeSubsystem no 9780longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9781necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9782>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9783AcpiLoadTables 9784 9785Note: These interface changes require changes to all existing OSDs 9786 9787The PCI_Config default address space handler is always installed 9788at the root namespace object. 9789 9790------------------------------------------- 9791Summary of changes for this label: 09_15_00 9792 9793The new initialization architecture is implemented. New 9794interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9795AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9796 9797(Namespace is automatically loaded when a table is loaded) 9798 9799The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 980052 bytes to 32 bytes. There is usually one of these for every 9801namespace object, so the memory savings is significant. 9802 9803Implemented just-in-time evaluation of the CreateField operators. 9804 9805Bug fixes for IA-64 support have been integrated. 9806 9807Additional code review comments have been implemented 9808 9809The so-called "third pass parse" has been replaced by a final walk 9810through the namespace to initialize all operation regions (address 9811spaces) and fields that have not yet been initialized during the 9812execution of the various _INI and REG methods. 9813 9814New file - namespace/nsinit.c 9815 9816------------------------------------------- 9817Summary of changes for this label: 09_01_00 9818 9819Namespace manager data structures have been reworked to change the 9820primary object from a table to a single object. This has 9821resulted in dynamic memory savings of 3X within the namespace and 98222X overall in the ACPI CA subsystem. 9823 9824Fixed problem where the call to AcpiEvFindPciRootBuses was 9825inadvertently left commented out. 9826 9827Reduced the warning count when generating the source with the GCC 9828compiler. 9829 9830Revision numbers added to each module header showing the 9831SourceSafe version of the file. Please refer to this version 9832number when giving us feedback or comments on individual modules. 9833 9834The main object types within the subsystem have been renamed to 9835clarify their purpose: 9836 9837ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9838ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9839ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9840 9841NOTE: no changes to the initialization sequence are included in 9842this label. 9843 9844------------------------------------------- 9845Summary of changes for this label: 08_23_00 9846 9847Fixed problem where TerminateControlMethod was being called 9848multiple times per method 9849 9850Fixed debugger problem where single stepping caused a semaphore to 9851be oversignalled 9852 9853Improved performance through additional parse object caching - 9854added ACPI_EXTENDED_OP type 9855 9856------------------------------------------- 9857Summary of changes for this label: 08_10_00 9858 9859Parser/Interpreter integration: Eliminated the creation of 9860complete parse trees for ACPI tables and control methods. 9861Instead, parse subtrees are created and then deleted as soon as 9862they are processed (Either entered into the namespace or executed 9863by the interpreter). This reduces the use of dynamic kernel 9864memory significantly. (about 10X) 9865 9866Exception codes broken into classes and renumbered. Be sure to 9867recompile all code that includes acexcep.h. Hopefully we won't 9868have to renumber the codes again now that they are split into 9869classes (environment, programmer, AML code, ACPI table, and 9870internal). 9871 9872Fixed some additional alignment issues in the Resource Manager 9873subcomponent 9874 9875Implemented semaphore tracking in the AcpiExec utility, and fixed 9876several places where mutexes/semaphores were being unlocked 9877without a corresponding lock operation. There are no known 9878semaphore or mutex "leaks" at this time. 9879 9880Fixed the case where an ASL Return operator is used to return an 9881unnamed package. 9882 9883------------------------------------------- 9884Summary of changes for this label: 07_28_00 9885 9886Fixed a problem with the way addresses were calculated in 9887AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 9888manifested itself when a Field was created with WordAccess or 9889DwordAccess, but the field unit defined within the Field was less 9890 9891than a Word or Dword. 9892 9893Fixed a problem in AmlDumpOperands() module's loop to pull 9894operands off of the operand stack to display information. The 9895problem manifested itself as a TLB error on 64-bit systems when 9896accessing an operand stack with two or more operands. 9897 9898Fixed a problem with the PCI configuration space handlers where 9899context was getting confused between accesses. This required a 9900change to the generic address space handler and address space 9901setup definitions. Handlers now get both a global handler context 9902(this is the one passed in by the user when executing 9903AcpiInstallAddressSpaceHandler() and a specific region context 9904that is unique to each region (For example, the _ADR, _SEG and 9905_BBN values associated with a specific region). The generic 9906function definitions have changed to the following: 9907 9908typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 9909UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 9910*HandlerContext, // This used to be void *Context void 9911*RegionContext); // This is an additional parameter 9912 9913typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 9914RegionHandle, UINT32 Function, void *HandlerContext, void 9915**RegionContext); // This used to be **ReturnContext 9916 9917------------------------------------------- 9918Summary of changes for this label: 07_21_00 9919 9920Major file consolidation and rename. All files within the 9921interpreter have been renamed as well as most header files. This 9922was done to prevent collisions with existing files in the host 9923OSs -- filenames such as "config.h" and "global.h" seem to be 9924quite common. The VC project files have been updated. All 9925makefiles will require modification. 9926 9927The parser/interpreter integration continues in Phase 5 with the 9928implementation of a complete 2-pass parse (the AML is parsed 9929twice) for each table; This avoids the construction of a huge 9930parse tree and therefore reduces the amount of dynamic memory 9931required by the subsystem. Greater use of the parse object cache 9932means that performance is unaffected. 9933 9934Many comments from the two code reviews have been rolled in. 9935 9936The 64-bit alignment support is complete. 9937 9938------------------------------------------- 9939Summary of changes for this label: 06_30_00 9940 9941With a nod and a tip of the hat to the technology of yesteryear, 9942we've added support in the source code for 80 column output 9943devices. The code is now mostly constrained to 80 columns or 9944less to support environments and editors that 1) cannot display 9945or print more than 80 characters on a single line, and 2) cannot 9946disable line wrapping. 9947 9948A major restructuring of the namespace data structure has been 9949completed. The result is 1) cleaner and more 9950understandable/maintainable code, and 2) a significant reduction 9951in the dynamic memory requirement for each named ACPI object 9952(almost half). 9953 9954------------------------------------------- 9955Summary of changes for this label: 06_23_00 9956 9957Linux support has been added. In order to obtain approval to get 9958the ACPI CA subsystem into the Linux kernel, we've had to make 9959quite a few changes to the base subsystem that will affect all 9960users (all the changes are generic and OS- independent). The 9961effects of these global changes have been somewhat far reaching. 9962Files have been merged and/or renamed and interfaces have been 9963renamed. The major changes are described below. 9964 9965Osd* interfaces renamed to AcpiOs* to eliminate namespace 9966pollution/confusion within our target kernels. All OSD 9967interfaces must be modified to match the new naming convention. 9968 9969Files merged across the subsystem. A number of the smaller source 9970and header files have been merged to reduce the file count and 9971increase the density of the existing files. There are too many 9972to list here. In general, makefiles that call out individual 9973files will require rebuilding. 9974 9975Interpreter files renamed. All interpreter files now have the 9976prefix am* instead of ie* and is*. 9977 9978Header files renamed: The acapi.h file is now acpixf.h. The 9979acpiosd.h file is now acpiosxf.h. We are removing references to 9980the acronym "API" since it is somewhat windowsy. The new name is 9981"external interface" or xface or xf in the filenames.j 9982 9983 9984All manifest constants have been forced to upper case (some were 9985mixed case.) Also, the string "ACPI_" has been prepended to many 9986(not all) of the constants, typedefs, and structs. 9987 9988The globals "DebugLevel" and "DebugLayer" have been renamed 9989"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 9990 9991All other globals within the subsystem are now prefixed with 9992"AcpiGbl_" Internal procedures within the subsystem are now 9993prefixed with "Acpi" (with only a few exceptions). The original 9994two-letter abbreviation for the subcomponent remains after "Acpi" 9995- for example, CmCallocate became AcpiCmCallocate. 9996 9997Added a source code translation/conversion utility. Used to 9998generate the Linux source code, it can be modified to generate 9999other types of source as well. Can also be used to cleanup 10000existing source by removing extraneous spaces and blank lines. 10001Found in tools/acpisrc/* 10002 10003OsdUnMapMemory was renamed to OsdUnmapMemory and then 10004AcpiOsUnmapMemory. (UnMap became Unmap). 10005 10006A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10007When set to one, this indicates that the caller wants to use the 10008 10009semaphore as a mutex, not a counting semaphore. ACPI CA uses 10010both types. However, implementers of this call may want to use 10011different OS primitives depending on the type of semaphore 10012requested. For example, some operating systems provide separate 10013 10014"mutex" and "semaphore" interfaces - where the mutex interface is 10015much faster because it doesn't have all the overhead of a full 10016semaphore implementation. 10017 10018Fixed a deadlock problem where a method that accesses the PCI 10019address space can block forever if it is the first access to the 10020space. 10021 10022------------------------------------------- 10023Summary of changes for this label: 06_02_00 10024 10025Support for environments that cannot handle unaligned data 10026accesses (e.g. firmware and OS environments devoid of alignment 10027handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10028been added (via configurable macros) in these three areas: - 10029Transfer of data from the raw AML byte stream is done via byte 10030moves instead of word/dword/qword moves. - External objects are 10031aligned within the user buffer, including package elements (sub- 10032objects). - Conversion of name strings to UINT32 Acpi Names is now 10033done byte-wise. 10034 10035The Store operator was modified to mimic Microsoft's 10036implementation when storing to a Buffer Field. 10037 10038Added a check of the BM_STS bit before entering C3. 10039 10040The methods subdirectory has been obsoleted and removed. A new 10041file, cmeval.c subsumes the functionality. 10042 10043A 16-bit (DOS) version of AcpiExec has been developed. The 10044makefile is under the acpiexec directory. 10045