changes.txt revision 114237
1114237Snjl28 February 2003. Summary of changes for version 20030228. 2114237Snjl 3114237Snjl 4114237Snjl1) ACPI CA Core Subsystem: 5114237Snjl 6114237SnjlThe GPE handling and dispatch code has been completely overhauled 7114237Snjlin preparation for support of GPE Block Devices (ID ACPI0006). 8114237SnjlThis affects internal data structures and code only; there should 9114237Snjlbe no differences visible externally. One new file has been 10114237Snjladded, evgpeblk.c 11114237Snjl 12114237SnjlThe FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 13114237Snjlfields that are used to determine the GPE block lengths. The 14114237SnjlREGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 15114237Snjlstructures are ignored. This is per the ACPI specification but 16114237Snjlit isn't very clear. The full 256 Block 0/1 GPEs are now 17114237Snjlsupported (the use of REGISTER_BIT_WIDTH limited the number of 18114237SnjlGPEs to 128). 19114237Snjl 20114237SnjlIn the SCI interrupt handler, removed the read of the PM1_CONTROL 21114237Snjlregister to look at the SCI_EN bit. On some machines, this read 22114237Snjlcauses an SMI event and greatly slows down SCI events. (This may 23114237Snjlin fact be the cause of slow battery status response on some 24114237Snjlsystems.) 25114237Snjl 26114237SnjlFixed a problem where a store of a NULL string to a package 27114237Snjlobject could cause the premature deletion of the object. This 28114237Snjlwas seen during execution of the battery _BIF method on some 29114237Snjlsystems, resulting in no battery data being returned. 30114237Snjl 31114237SnjlAdded AcpiWalkResources interface to simplify parsing of resource 32114237Snjllists. 33114237Snjl 34114237SnjlCode and Data Size: Current core subsystem library sizes are 35114237Snjlshown below. These are the code and data sizes for the 36114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 37114237Snjlthese values do not include any ACPI driver or OSPM code. The 38114237Snjldebug version of the code includes the debug output trace 39114237Snjlmechanism and has a much larger code and data size. Note that 40114237Snjlthese values will vary depending on the efficiency of the 41114237Snjlcompiler and the compiler options used during generation. 42114237Snjl 43114237Snjl Previous Release 44114237Snjl Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 45114237Snjl Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 46114237Snjl Current Release: 47114237Snjl Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 48114237Snjl Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 49114237Snjl 50114237Snjl 51114237Snjl2) Linux 52114237Snjl 53114237SnjlS3 fixes (Ole Rohne) 54114237Snjl 55114237SnjlUpdate ACPI PHP driver with to use new acpi_walk_resource API 56114237Snjl(Bjorn Helgaas) 57114237Snjl 58114237SnjlAdd S4BIOS support (Pavel Machek) 59114237Snjl 60114237SnjlMap in entire table before performing checksum (John Stultz) 61114237Snjl 62114237SnjlExpand the mem= cmdline to allow the specification of reserved 63114237Snjland ACPI DATA blocks (Pavel Machek) 64114237Snjl 65114237SnjlNever use ACPI on VISWS 66114237Snjl 67114237SnjlFix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 68114237Snjl 69114237SnjlRevert a change that allowed P_BLK lengths to be 4 or 5. This is 70114237Snjlcausing us to think that some systems support C2 when they really 71114237Snjldon't. 72114237Snjl 73114237SnjlDo not count processor objects for non-present CPUs (Thanks to 74114237SnjlDominik Brodowski) 75114237Snjl 76114237Snjl 77114237Snjl3) iASL Compiler: 78114237Snjl 79114237SnjlFixed a problem where ASL include files could not be found and 80114237Snjlopened. 81114237Snjl 82114237SnjlAdded support for the _PDC reserved name. 83114237Snjl 84114237Snjl 85114237Snjl22 January 2003. Summary of changes for version 20030122. 86114237Snjl 87114237Snjl 88114237Snjl1) ACPI CA Core Subsystem: 89114237Snjl 90114237SnjlAdded a check for constructs of the form: Store (Local0, Local0) 91114237Snjlwhere Local0 is not initialized. Apparently, some BIOS 92114237Snjlprogrammers believe that this is a NOOP. Since this store 93114237Snjldoesn't do anything anyway, the new prototype behavior will 94114237Snjlignore this error. This is a case where we can relax the strict 95114237Snjlchecking in the interpreter in the name of compatibility. 96114237Snjl 97114237Snjl 98114237Snjl2) Linux 99114237Snjl 100114237SnjlThe AcpiSrc Source Conversion Utility has been released with the 101114237SnjlLinux package for the first time. This is the utility that is 102114237Snjlused to convert the ACPI CA base source code to the Linux 103114237Snjlversion. 104114237Snjl 105114237Snjl(Both) Handle P_BLK lengths shorter than 6 more gracefully 106114237Snjl 107114237Snjl(Both) Move more headers to include/acpi, and delete an unused 108114237Snjlheader. 109114237Snjl 110114237Snjl(Both) Move drivers/acpi/include directory to include/acpi 111114237Snjl 112114237Snjl(Both) Boot functions don't use cmdline, so don't pass it around 113114237Snjl 114114237Snjl(Both) Remove include of unused header (Adrian Bunk) 115114237Snjl 116114237Snjl(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 117114237Snjlthe 118114237Snjlformer now also includes the latter, acpiphp.h only needs the 119114237Snjlone, now. 120114237Snjl 121114237Snjl(2.5) Make it possible to select method of bios restoring after 122114237SnjlS3 123114237Snjlresume. [=> no more ugly ifdefs] (Pavel Machek) 124114237Snjl 125114237Snjl(2.5) Make proc write interfaces work (Pavel Machek) 126114237Snjl 127114237Snjl(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 128114237Snjl 129114237Snjl(2.5) Break out ACPI Perf code into its own module, under cpufreq 130114237Snjl(Dominik Brodowski) 131114237Snjl 132114237Snjl(2.4) S4BIOS support (Ducrot Bruno) 133114237Snjl 134114237Snjl(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 135114237SnjlVisinoni) 136114237Snjl 137114237Snjl 138114237Snjl3) iASL Compiler: 139114237Snjl 140114237SnjlAdded support to disassemble SSDT and PSDTs. 141114237Snjl 142114237SnjlImplemented support to obtain SSDTs from the Windows registry if 143114237Snjlavailable. 144114237Snjl 145114237Snjl 146102550Siwasaki---------------------------------------- 147114237Snjl09 January 2003. Summary of changes for version 20030109. 148114237Snjl 149114237Snjl1) ACPI CA Core Subsystem: 150114237Snjl 151114237SnjlChanged the behavior of the internal Buffer-to-String conversion 152114237Snjlfunction. The current ACPI specification states that the 153114237Snjlcontents of the buffer are "converted to a string of two- 154114237Snjlcharacter hexadecimal numbers, each separated by a space". 155114237SnjlUnfortunately, this definition is not backwards compatible with 156114237Snjlexisting ACPI 1.0 implementations (although the behavior was not 157114237Snjldefined in the ACPI 1.0 specification). The new behavior simply 158114237Snjlcopies data from the buffer to the string until a null character 159114237Snjlis found or the end of the buffer is reached. The new String 160114237Snjlobject is always null terminated. This problem was seen during 161114237Snjlthe generation of _BIF battery data where incorrect strings were 162114237Snjlreturned for battery type, etc. This will also require an errata 163114237Snjlto the ACPI specification. 164114237Snjl 165114237SnjlRenamed all instances of NATIVE_UINT and NATIVE_INT to 166114237SnjlACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 167114237Snjl 168114237SnjlCopyright in all module headers (both Linux and non-Linux) has be 169114237Snjlupdated to 2003. 170114237Snjl 171114237SnjlCode and Data Size: Current core subsystem library sizes are 172114237Snjlshown below. These are the code and data sizes for the 173114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 174114237Snjlthese values do not include any ACPI driver or OSPM code. The 175114237Snjldebug version of the code includes the debug output trace 176114237Snjlmechanism and has a much larger code and data size. Note that 177114237Snjlthese values will vary depending on the efficiency of the 178114237Snjlcompiler and the compiler options used during generation. 179114237Snjl 180114237Snjl Previous Release 181114237Snjl Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 182114237Snjl Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 183114237Snjl Current Release: 184114237Snjl Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 185114237Snjl Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 186114237Snjl 187114237Snjl 188114237Snjl2) Linux 189114237Snjl 190114237SnjlFixed an oops on module insertion/removal (Matthew Tippett) 191114237Snjl 192114237Snjl(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 193114237Snjl 194114237Snjl(2.5) Replace pr_debug (Randy Dunlap) 195114237Snjl 196114237Snjl(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 197114237Snjl 198114237Snjl(Both) Eliminate spawning of thread from timer callback, in favor 199114237Snjlof schedule_work() 200114237Snjl 201114237Snjl(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 202114237Snjl 203114237Snjl(Both) Added define for Fixed Function HW region (Matthew Wilcox) 204114237Snjl 205114237Snjl(Both) Add missing statics to button.c (Pavel Machek) 206114237Snjl 207114237SnjlSeveral changes have been made to the source code translation 208114237Snjlutility that generates the Linux Code in order to make the code 209114237Snjlmore "Linux-like": 210114237Snjl 211114237SnjlAll typedefs on structs and unions have been removed in keeping 212114237Snjlwith the Linux coding style. 213114237Snjl 214114237SnjlRemoved the non-Linux SourceSafe module revision number from each 215114237Snjlmodule header. 216114237Snjl 217114237SnjlCompleted major overhaul of symbols to be lowercased for linux. 218114237SnjlDoubled the number of symbols that are lowercased. 219114237Snjl 220114237SnjlFixed a problem where identifiers within procedure headers and 221114237Snjlwithin quotes were not fully lower cased (they were left with a 222114237Snjlstarting capital.) 223114237Snjl 224114237SnjlSome C macros whose only purpose is to allow the generation of 16- 225114237Snjlbit code are now completely removed in the Linux code, increasing 226114237Snjlreadability and maintainability. 227114237Snjl 228114237Snjl---------------------------------------- 229114237Snjl 230114237Snjl12 December 2002. Summary of changes for version 20021212. 231114237Snjl 232114237Snjl 233114237Snjl1) ACPI CA Core Subsystem: 234114237Snjl 235114237SnjlFixed a problem where the creation of a zero-length AML Buffer 236114237Snjlwould cause a fault. 237114237Snjl 238114237SnjlFixed a problem where a Buffer object that pointed to a static 239114237SnjlAML buffer (in an ACPI table) could inadvertently be deleted, 240114237Snjlcausing memory corruption. 241114237Snjl 242114237SnjlFixed a problem where a user buffer (passed in to the external 243114237SnjlACPI CA interfaces) could be overwritten if the buffer was too 244114237Snjlsmall to complete the operation, causing memory corruption. 245114237Snjl 246114237SnjlFixed a problem in the Buffer-to-String conversion code where a 247114237Snjlstring of length one was always returned, regardless of the size 248114237Snjlof the input Buffer object. 249114237Snjl 250114237SnjlRemoved the NATIVE_CHAR data type across the entire source due to 251114237Snjllack of need and lack of consistent use. 252114237Snjl 253114237SnjlCode and Data Size: Current core subsystem library sizes are 254114237Snjlshown below. These are the code and data sizes for the 255114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 256114237Snjlthese values do not include any ACPI driver or OSPM code. The 257114237Snjldebug version of the code includes the debug output trace 258114237Snjlmechanism and has a much larger code and data size. Note that 259114237Snjlthese values will vary depending on the efficiency of the 260114237Snjlcompiler and the compiler options used during generation. 261114237Snjl 262114237Snjl Previous Release 263114237Snjl Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 264114237Snjl Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 265114237Snjl Current Release: 266114237Snjl Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 267114237Snjl Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 268114237Snjl 269114237Snjl 270114237Snjl---------------------------------------- 271114237Snjl05 December 2002. Summary of changes for version 20021205. 272114237Snjl 273114237Snjl1) ACPI CA Core Subsystem: 274114237Snjl 275114237SnjlFixed a problem where a store to a String or Buffer object could 276114237Snjlcause corruption of the DSDT if the object type being stored was 277114237Snjlthe same as the target object type and the length of the object 278114237Snjlbeing stored was equal to or smaller than the original (existing) 279114237Snjltarget object. This was seen to cause corruption of battery _BIF 280114237Snjlbuffers if the _BIF method modified the buffer on the fly. 281114237Snjl 282114237SnjlFixed a problem where an internal error was generated if a 283114237Snjlcontrol method invocation was used in an OperationRegion, Buffer, 284114237Snjlor Package declaration. This was caused by the deferred parsing 285114237Snjlof the control method and thus the deferred creation of the 286114237Snjlinternal method object. The solution to this problem was to 287114237Snjlcreate the internal method object at the moment the method is 288114237Snjlencountered in the first pass - so that subsequent references to 289114237Snjlthe method will able to obtain the required parameter count and 290114237Snjlthus properly parse the method invocation. This problem 291114237Snjlpresented itself as an AE_AML_INTERNAL during the pass 1 parse 292114237Snjlphase during table load. 293114237Snjl 294114237SnjlFixed a problem where the internal String object copy routine did 295114237Snjlnot always allocate sufficient memory for the target String 296114237Snjlobject and caused memory corruption. This problem was seen to 297114237Snjlcause "Allocation already present in list!" errors as memory 298114237Snjlallocation became corrupted. 299114237Snjl 300114237SnjlImplemented a new function for the evaluation of namespace 301114237Snjlobjects that allows the specification of the allowable return 302114237Snjlobject types. This simplifies a lot of code that checks for a 303114237Snjlreturn object of one or more specific objects returned from the 304114237Snjlevaluation (such as _STA, etc.) This may become and external 305114237Snjlfunction if it would be useful to ACPI-related drivers. 306114237Snjl 307114237SnjlCompleted another round of prefixing #defines with "ACPI_" for 308114237Snjlclarity. 309114237Snjl 310114237SnjlCompleted additional code restructuring to allow more modular 311114237Snjllinking for iASL compiler and AcpiExec. Several files were split 312114237Snjlcreating new files. New files: nsparse.c dsinit.c evgpe.c 313114237Snjl 314114237SnjlImplemented an abort mechanism to terminate an executing control 315114237Snjlmethod via the AML debugger. This feature is useful for 316114237Snjldebugging control methods that depend (wait) for specific 317114237Snjlhardware responses. 318114237Snjl 319114237SnjlCode and Data Size: Current core subsystem library sizes are 320114237Snjlshown below. These are the code and data sizes for the 321114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 322114237Snjlthese values do not include any ACPI driver or OSPM code. The 323114237Snjldebug version of the code includes the debug output trace 324114237Snjlmechanism and has a much larger code and data size. Note that 325114237Snjlthese values will vary depending on the efficiency of the 326114237Snjlcompiler and the compiler options used during generation. 327114237Snjl 328114237Snjl Previous Release 329114237Snjl Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 330114237Snjl Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 331114237Snjl Current Release: 332114237Snjl Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 333114237Snjl Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 334114237Snjl 335114237Snjl 336114237Snjl2) iASL Compiler/Disassembler 337114237Snjl 338114237SnjlFixed a compiler code generation problem for "Interrupt" Resource 339114237SnjlDescriptors. If specified in the ASL, the optional "Resource 340114237SnjlSource Index" and "Resource Source" fields were not inserted into 341114237Snjlthe correct location within the AML resource descriptor, creating 342114237Snjlan invalid descriptor. 343114237Snjl 344114237SnjlFixed a disassembler problem for "Interrupt" resource 345114237Snjldescriptors. The optional "Resource Source Index" and "Resource 346114237SnjlSource" fields were ignored. 347114237Snjl 348114237Snjl 349114237Snjl---------------------------------------- 350114237Snjl22 November 2002. Summary of changes for version 20021122. 351114237Snjl 352114237Snjl 353114237Snjl1) ACPI CA Core Subsystem: 354114237Snjl 355114237SnjlFixed a reported problem where an object stored to a Method Local 356114237Snjlor Arg was not copied to a new object during the store - the 357114237Snjlobject pointer was simply copied to the Local/Arg. This caused 358114237Snjlall subsequent operations on the Local/Arg to also affect the 359114237Snjloriginal source of the store operation. 360114237Snjl 361114237SnjlFixed a problem where a store operation to a Method Local or Arg 362114237Snjlwas not completed properly if the Local/Arg contained a reference 363114237Snjl(from RefOf) to a named field. The general-purpose store-to- 364114237Snjlnamespace-node code is now used so that this case is handled 365114237Snjlautomatically. 366114237Snjl 367114237SnjlFixed a problem where the internal object copy routine would 368114237Snjlcause a protection fault if the object being copied was a Package 369114237Snjland contained either 1) a NULL package element or 2) a nested sub- 370114237Snjlpackage. 371114237Snjl 372114237SnjlFixed a problem with the GPE initialization that resulted from an 373114237Snjlambiguity in the ACPI specification. One section of the 374114237Snjlspecification states that both the address and length of the GPE 375114237Snjlblock must be zero if the block is not supported. Another 376114237Snjlsection implies that only the address need be zero if the block 377114237Snjlis not supported. The code has been changed so that both the 378114237Snjladdress and the length must be non-zero to indicate a valid GPE 379114237Snjlblock (i.e., if either the address or the length is zero, the GPE 380114237Snjlblock is invalid.) 381114237Snjl 382114237SnjlCode and Data Size: Current core subsystem library sizes are 383114237Snjlshown below. These are the code and data sizes for the 384114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 385114237Snjlthese values do not include any ACPI driver or OSPM code. The 386114237Snjldebug version of the code includes the debug output trace 387114237Snjlmechanism and has a much larger code and data size. Note that 388114237Snjlthese values will vary depending on the efficiency of the 389114237Snjlcompiler and the compiler options used during generation. 390114237Snjl 391114237Snjl Previous Release 392114237Snjl Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 393114237Snjl Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 394114237Snjl Current Release: 395114237Snjl Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 396114237Snjl Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 397114237Snjl 398114237Snjl 399114237Snjl2) Linux 400114237Snjl 401114237SnjlCleaned up EC driver. Exported an external EC read/write 402114237Snjlinterface. By going through this, other drivers (most notably 403114237Snjlsonypi) will be able to serialize access to the EC. 404114237Snjl 405114237Snjl 406114237Snjl3) iASL Compiler/Disassembler 407114237Snjl 408114237SnjlImplemented support to optionally generate include files for both 409114237SnjlASM and C (the -i switch). This simplifies BIOS development by 410114237Snjlautomatically creating include files that contain external 411114237Snjldeclarations for the symbols that are created within the 412114237Snjl(optionally generated) ASM and C AML source files. 413114237Snjl 414114237Snjl 415114237Snjl---------------------------------------- 416107325Siwasaki15 November 2002. Summary of changes for version 20021115. 417104470Siwasaki 418107325Siwasaki1) ACPI CA Core Subsystem: 419107325Siwasaki 420114237SnjlFixed a memory leak problem where an error during resolution of 421114237Snjlmethod arguments during a method invocation from another method 422114237Snjlfailed to cleanup properly by deleting all successfully resolved 423114237Snjlargument objects. 424107325Siwasaki 425114237SnjlFixed a problem where the target of the Index() operator was not 426114237Snjlcorrectly constructed if the source object was a package. This 427114237Snjlproblem has not been detected because the use of a target operand 428114237Snjlwith Index() is very rare. 429107325Siwasaki 430107325SiwasakiFixed a problem with the Index() operator where an attempt was 431107325Siwasakimade to delete the operand objects twice. 432107325Siwasaki 433107325SiwasakiFixed a problem where an attempt was made to delete an operand 434114237Snjltwice during execution of the CondRefOf() operator if the target 435114237Snjldid not exist. 436107325Siwasaki 437114237SnjlImplemented the first of perhaps several internal create object 438114237Snjlfunctions that create and initialize a specific object type. 439114237SnjlThis consolidates duplicated code wherever the object is created, 440114237Snjlthus shrinking the size of the subsystem. 441107325Siwasaki 442114237SnjlImplemented improved debug/error messages for errors that occur 443114237Snjlduring nested method invocations. All executing method pathnames 444114237Snjlare displayed (with the error) as the call stack is unwound - 445114237Snjlthus simplifying debug. 446107325Siwasaki 447107325SiwasakiFixed a problem introduced in the 10/02 release that caused 448114237Snjlpremature deletion of a buffer object if a buffer was used as an 449114237SnjlASL operand where an integer operand is required (Thus causing an 450114237Snjlimplicit object conversion from Buffer to Integer.) The change 451114237Snjlin the 10/02 release was attempting to fix a memory leak (albeit 452114237Snjlincorrectly.) 453107325Siwasaki 454107325SiwasakiCode and Data Size: Current core subsystem library sizes are 455107325Siwasakishown below. These are the code and data sizes for the 456114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 457114237Snjlthese values do not include any ACPI driver or OSPM code. The 458114237Snjldebug version of the code includes the debug output trace 459107325Siwasakimechanism and has a much larger code and data size. Note that 460107325Siwasakithese values will vary depending on the efficiency of the 461107325Siwasakicompiler and the compiler options used during generation. 462107325Siwasaki 463107325Siwasaki Previous Release 464107325Siwasaki Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 465107325Siwasaki Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 466107325Siwasaki Current Release: 467107325Siwasaki Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 468107325Siwasaki Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 469107325Siwasaki 470107325Siwasaki 471107325Siwasaki2) Linux 472107325Siwasaki 473114237SnjlChanged the implementation of the ACPI semaphores to use down() 474114237Snjlinstead of down_interruptable(). It is important that the 475114237Snjlexecution of ACPI control methods not be interrupted by signals. 476114237SnjlMethods must run to completion, or the system may be left in an 477114237Snjlunknown/unstable state. 478107325Siwasaki 479107325SiwasakiFixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not 480107325Siwasakiset. (Shawn Starr) 481107325Siwasaki 482107325Siwasaki 483107325Siwasaki3) iASL Compiler/Disassembler 484107325Siwasaki 485107325Siwasaki 486114237SnjlChanged the default location of output files. All output files 487114237Snjlare now placed in the current directory by default instead of in 488114237Snjlthe directory of the source file. This change may affect some 489114237Snjlexisting makefiles, but it brings the behavior of the compiler in 490114237Snjlline with other similar tools. The location of the output files 491114237Snjlcan be overridden with the -p command line switch. 492107325Siwasaki 493114237Snjl 494107325Siwasaki---------------------------------------- 495107325Siwasaki11 November 2002. Summary of changes for version 20021111. 496107325Siwasaki 497107325Siwasaki 498114237Snjl0) ACPI Specification 2.0B is released and is now available at: 499114237Snjlhttp://www.acpi.info/index.html 500107325Siwasaki 501107325Siwasaki 502107325Siwasaki1) ACPI CA Core Subsystem: 503107325Siwasaki 504107325SiwasakiImplemented support for the ACPI 2.0 SMBus Operation Regions. 505114237SnjlThis includes the early detection and handoff of the request to 506114237Snjlthe SMBus region handler (avoiding all of the complex field 507107325Siwasakisupport code), and support for the bidirectional return packet 508107325Siwasakifrom an SMBus write operation. This paves the way for the 509107325Siwasakidevelopment of SMBus drivers in each host operating system. 510107325Siwasaki 511107325SiwasakiFixed a problem where the semaphore WAIT_FOREVER constant was 512107325Siwasakidefined as 32 bits, but must be 16 bits according to the ACPI 513107325Siwasakispecification. This had the side effect of causing ASL 514107325SiwasakiMutex/Event timeouts even though the ASL code requested a wait 515107325Siwasakiforever. Changed all internal references to the ACPI timeout 516107325Siwasakiparameter to 16 bits to prevent future problems. Changed the 517107325Siwasakiname of WAIT_FOREVER to ACPI_WAIT_FOREVER. 518107325Siwasaki 519107325SiwasakiCode and Data Size: Current core subsystem library sizes are 520107325Siwasakishown below. These are the code and data sizes for the 521114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 522114237Snjlthese values do not include any ACPI driver or OSPM code. The 523114237Snjldebug version of the code includes the debug output trace 524107325Siwasakimechanism and has a much larger code and data size. Note that 525107325Siwasakithese values will vary depending on the efficiency of the 526107325Siwasakicompiler and the compiler options used during generation. 527107325Siwasaki 528107325Siwasaki Previous Release 529107325Siwasaki Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 530107325Siwasaki Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 531107325Siwasaki Current Release: 532107325Siwasaki Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 533107325Siwasaki Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 534107325Siwasaki 535107325Siwasaki 536107325Siwasaki2) Linux 537107325Siwasaki 538107325SiwasakiModule loading/unloading fixes (John Cagle) 539107325Siwasaki 540107325Siwasaki 541107325Siwasaki3) iASL Compiler/Disassembler 542107325Siwasaki 543107325SiwasakiAdded support for the SMBBlockProcessCall keyword (ACPI 2.0) 544107325Siwasaki 545107325SiwasakiImplemented support for the disassembly of all SMBus protocol 546107325Siwasakikeywords (SMBQuick, SMBWord, etc.) 547107325Siwasaki 548107325Siwasaki---------------------------------------- 549107325Siwasaki01 November 2002. Summary of changes for version 20021101. 550107325Siwasaki 551107325Siwasaki 552107325Siwasaki1) ACPI CA Core Subsystem: 553107325Siwasaki 554107325SiwasakiFixed a problem where platforms that have a GPE1 block but no 555114237SnjlGPE0 block were not handled correctly. This resulted in a "GPE 556114237Snjloverlap" error message. GPE0 is no longer required. 557107325Siwasaki 558107325SiwasakiRemoved code added in the previous release that inserted nodes 559114237Snjlinto the namespace in alphabetical order. This caused some side- 560114237Snjleffects on various machines. The root cause of the problem is 561114237Snjlstill under investigation since in theory, the internal ordering 562114237Snjlof the namespace nodes should not matter. 563107325Siwasaki 564107325Siwasaki 565114237SnjlEnhanced error reporting for the case where a named object is not 566114237Snjlfound during control method execution. The full ACPI namepath 567114237Snjl(name reference) of the object that was not found is displayed in 568114237Snjlthis case. 569107325Siwasaki 570114237SnjlNote: as a result of the overhaul of the namespace object types 571114237Snjlin the previous release, the namespace nodes for the predefined 572114237Snjlscopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 573114237Snjlinstead of ACPI_TYPE_ANY. This simplifies the namespace 574114237Snjlmanagement code but may affect code that walks the namespace tree 575114237Snjllooking for specific object types. 576114237Snjl 577107325SiwasakiCode and Data Size: Current core subsystem library sizes are 578107325Siwasakishown below. These are the code and data sizes for the 579114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 580114237Snjlthese values do not include any ACPI driver or OSPM code. The 581114237Snjldebug version of the code includes the debug output trace 582107325Siwasakimechanism and has a much larger code and data size. Note that 583107325Siwasakithese values will vary depending on the efficiency of the 584107325Siwasakicompiler and the compiler options used during generation. 585107325Siwasaki 586107325Siwasaki Previous Release 587107325Siwasaki Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 588107325Siwasaki Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 589107325Siwasaki Current Release: 590107325Siwasaki Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 591107325Siwasaki Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 592107325Siwasaki 593107325Siwasaki 594107325Siwasaki2) Linux 595107325Siwasaki 596107325SiwasakiFixed a problem introduced in the previous release where the 597114237SnjlProcessor and Thermal objects were not recognized and installed 598114237Snjlin /proc. This was related to the scope type change described 599114237Snjlabove. 600107325Siwasaki 601107325Siwasaki 602107325Siwasaki3) iASL Compiler/Disassembler 603107325Siwasaki 604114237SnjlImplemented the -g option to get all of the required ACPI tables 605114237Snjlfrom the registry and save them to files (Windows version of the 606114237Snjlcompiler only.) The required tables are the FADT, FACS, and 607114237SnjlDSDT. 608107325Siwasaki 609114237SnjlAdded ACPI table checksum validation during table disassembly in 610114237Snjlorder to catch corrupted tables. 611107325Siwasaki 612107325Siwasaki 613107325Siwasaki---------------------------------------- 614107325Siwasaki22 October 2002. Summary of changes for version 20021022. 615107325Siwasaki 616107325Siwasaki1) ACPI CA Core Subsystem: 617107325Siwasaki 618114237SnjlImplemented a restriction on the Scope operator that the target 619114237Snjlmust already exist in the namespace at the time the operator is 620114237Snjlencountered (during table load or method execution). In other 621114237Snjlwords, forward references are not allowed and Scope() cannot 622114237Snjlcreate a new object. This changes the previous behavior where the 623114237Snjlinterpreter would create the name if not found. This new 624114237Snjlbehavior correctly enables the search-to-root algorithm during 625114237Snjlnamespace lookup of the target name. Because of this upsearch, 626114237Snjlthis fixes the known Compaq _SB_.OKEC problem and makes both the 627114237SnjlAML interpreter and iASL compiler compatible with other ACPI 628114237Snjlimplementations. 629107325Siwasaki 630114237SnjlCompleted a major overhaul of the internal ACPI object types for 631114237Snjlthe ACPI Namespace and the associated operand objects. Many of 632114237Snjlthese types had become obsolete with the introduction of the two- 633114237Snjlpass namespace load. This cleanup simplifies the code and makes 634114237Snjlthe entire namespace load mechanism much clearer and easier to 635114237Snjlunderstand. 636107325Siwasaki 637114237SnjlImproved debug output for tracking scope opening/closing to help 638114237Snjldiagnose scoping issues. The old scope name as well as the new 639114237Snjlscope name are displayed. Also improved error messages for 640114237Snjlproblems with ASL Mutex objects and error messages for GPE 641114237Snjlproblems. 642107325Siwasaki 643107325SiwasakiCleaned up the namespace dump code, removed obsolete code. 644107325Siwasaki 645114237SnjlAll string output (for all namespace/object dumps) now uses the 646114237Snjlcommon ACPI string output procedure which handles escapes 647107325Siwasakiproperly and does not emit non-printable characters. 648107325Siwasaki 649107325SiwasakiFixed some issues with constants in the 64-bit version of the 650107325Siwasakilocal C library (utclib.c) 651107325Siwasaki 652107325Siwasaki 653107325Siwasaki2) Linux 654107325Siwasaki 655107325SiwasakiEC Driver: No longer attempts to acquire the Global Lock at 656107325Siwasakiinterrupt level. 657107325Siwasaki 658107325Siwasaki 659107325Siwasaki3) iASL Compiler/Disassembler 660107325Siwasaki 661107325SiwasakiImplemented ACPI 2.0B grammar change that disallows all Type 1 662114237Snjland 2 opcodes outside of a control method. This means that the 663114237Snjl"executable" operators (versus the "namespace" operators) cannot 664114237Snjlbe used at the table level; they can only be used within a 665114237Snjlcontrol method. 666107325Siwasaki 667107325SiwasakiImplemented the restriction on the Scope() operator where the 668107325Siwasakitarget must already exist in the namespace at the time the 669114237Snjloperator is encountered (during ASL compilation). In other words, 670114237Snjlforward references are not allowed and Scope() cannot create a 671114237Snjlnew object. This makes the iASL compiler compatible with other 672114237SnjlACPI implementations and makes the Scope() implementation adhere 673114237Snjlto the ACPI specification. 674107325Siwasaki 675107325SiwasakiFixed a problem where namepath optimization for the Alias 676107325Siwasakioperator was optimizing the wrong path (of the two namepaths.) 677107325SiwasakiThis caused a "Missing alias link" error message. 678107325Siwasaki 679114237SnjlFixed a problem where an "unknown reserved name" warning could be 680114237Snjlincorrectly generated for names like "_SB" when the trailing 681114237Snjlunderscore is not used in the original ASL. 682107325Siwasaki 683107325SiwasakiFixed a problem where the reserved name check did not handle 684114237SnjlNamePaths with multiple NameSegs correctly. The first nameseg of 685114237Snjlthe NamePath was examined instead of the last NameSeg. 686107325Siwasaki 687107325Siwasaki 688107325Siwasaki---------------------------------------- 689107325Siwasaki 690104470Siwasaki02 October 2002. Summary of changes for this release. 691104470Siwasaki 692104470Siwasaki 693104470Siwasaki1) ACPI CA Core Subsystem version 20021002: 694104470Siwasaki 695104470SiwasakiFixed a problem where a store/copy of a string to an existing 696104470Siwasakistring did not always set the string length properly in the 697104470SiwasakiString object. 698104470Siwasaki 699104470SiwasakiFixed a reported problem with the ToString operator where the 700104470Siwasakibehavior was identical to the ToHexString operator instead of 701104470Siwasakijust simply converting a raw buffer to a string data type. 702104470Siwasaki 703104470SiwasakiFixed a problem where CopyObject and the other "explicit" 704104470Siwasakiconversion operators were not updating the internal namespace 705104470Siwasakinode type as part of the store operation. 706104470Siwasaki 707104470SiwasakiFixed a memory leak during implicit source operand conversion 708114237Snjlwhere the original object was not deleted if it was converted to 709114237Snjla new object of a different type. 710104470Siwasaki 711104470SiwasakiEnhanced error messages for all problems associated with 712104470Siwasakinamespace lookups. Common procedure generates and prints the 713104470Siwasakilookup name as well as the formatted status. 714104470Siwasaki 715104470SiwasakiCompleted implementation of a new design for the Alias support 716104470Siwasakiwithin the namespace. The existing design did not handle the 717114237Snjlcase where a new object was assigned to one of the two names due 718114237Snjlto the use of an explicit conversion operator, resulting in the 719114237Snjltwo names pointing to two different objects. The new design 720114237Snjlsimply points the Alias name to the original name node - not to 721114237Snjlthe object. This results in a level of indirection that must be 722114237Snjlhandled in the name resolution mechanism. 723104470Siwasaki 724104470SiwasakiCode and Data Size: Current core subsystem library sizes are 725104470Siwasakishown below. These are the code and data sizes for the 726114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 727114237Snjlthese values do not include any ACPI driver or OSPM code. The 728114237Snjldebug version of the code includes the debug output trace 729114237Snjlmechanism and has a larger code and data size. Note that these 730114237Snjlvalues will vary depending on the efficiency of the compiler and 731114237Snjlthe compiler options used during generation. 732104470Siwasaki 733104470Siwasaki Previous Release 734104470Siwasaki Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 735104470Siwasaki Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 736104470Siwasaki Current Release: 737104470Siwasaki Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 738104470Siwasaki Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 739104470Siwasaki 740104470Siwasaki 741104470Siwasaki2) Linux 742104470Siwasaki 743104470SiwasakiInitialize thermal driver's timer before it is used. (Knut 744104470SiwasakiNeumann) 745104470Siwasaki 746104470SiwasakiAllow handling negative celsius values. (Kochi Takayoshi) 747104470Siwasaki 748114237SnjlFix thermal management and make trip points. R/W (Pavel Machek) 749104470Siwasaki 750104470SiwasakiFix /proc/acpi/sleep. (P. Christeas) 751104470Siwasaki 752104470SiwasakiIA64 fixes. (David Mosberger) 753104470Siwasaki 754104470SiwasakiFix reversed logic in blacklist code. (Sergio Monteiro Basto) 755104470Siwasaki 756104470SiwasakiReplace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 757104470SiwasakiBrodowski) 758104470Siwasaki 759104470Siwasaki 760104470Siwasaki3) iASL Compiler/Disassembler 761104470Siwasaki 762104470SiwasakiClarified some warning/error messages. 763104470Siwasaki 764104470Siwasaki 765104470Siwasaki---------------------------------------- 766104470Siwasaki18 September 2002. Summary of changes for this release. 767104470Siwasaki 768104470Siwasaki 769104470Siwasaki1) ACPI CA Core Subsystem version 20020918: 770104470Siwasaki 771114237SnjlFixed a reported problem with reference chaining (via the Index() 772114237Snjland RefOf() operators) in the ObjectType() and SizeOf() 773114237Snjloperators. The definition of these operators includes the 774114237Snjldereferencing of all chained references to return information on 775114237Snjlthe base object. 776104470Siwasaki 777104470SiwasakiFixed a problem with stores to indexed package elements - the 778104470Siwasakiexisting code would not complete the store if an "implicit 779114237Snjlconversion" was not performed. In other words, if the existing 780114237Snjlobject (package element) was to be replaced completely, the code 781114237Snjldidn't handle this case. 782104470Siwasaki 783104470SiwasakiRelaxed typechecking on the ASL "Scope" operator to allow the 784104470Siwasakitarget name to refer to an object of type Integer, String, or 785104470SiwasakiBuffer, in addition to the scoping object types (Device, 786104470Siwasakipredefined Scopes, Processor, PowerResource, and ThermalZone.) 787114237SnjlThis allows existing AML code that has workarounds for a bug in 788114237SnjlWindows to function properly. A warning is issued, however. 789114237SnjlThis affects both the AML interpreter and the iASL compiler. 790114237SnjlBelow is an example of this type of ASL code: 791104470Siwasaki 792104470Siwasaki Name(DEB,0x00) 793104470Siwasaki Scope(DEB) 794104470Siwasaki { 795104470Siwasaki 796114237SnjlFixed some reported problems with 64-bit integer support in the 797114237Snjllocal implementation of C library functions (clib.c) 798104470Siwasaki 799104470Siwasaki 800104470Siwasaki2) Linux 801104470Siwasaki 802104470SiwasakiUse ACPI fix map region instead of IOAPIC region, since it is 803104470Siwasakiundefined in non-SMP. 804104470Siwasaki 805114237SnjlEnsure that the SCI has the proper polarity and trigger, even on 806114237Snjlsystems that do not have an interrupt override entry in the MADT. 807104470Siwasaki 808104470Siwasaki2.5 big driver reorganization (Pat Mochel) 809104470Siwasaki 810104470SiwasakiUse early table mapping code from acpitable.c (Andi Kleen) 811104470Siwasaki 812104470SiwasakiNew blacklist entries (Andi Kleen) 813104470Siwasaki 814114237SnjlBlacklist improvements. Split blacklist code out into a separate 815114237Snjlfile. Move checking the blacklist to very early. Previously, we 816114237Snjlwould use ACPI tables, and then halfway through init, check the 817114237Snjlblacklist -- too late. Now, it's early enough to completely fall- 818114237Snjlback to non-ACPI. 819104470Siwasaki 820104470Siwasaki 821104470Siwasaki3) iASL Compiler/Disassembler version 20020918: 822104470Siwasaki 823114237SnjlFixed a problem where the typechecking code didn't know that an 824114237Snjlalias could point to a method. In other words, aliases were not 825114237Snjlbeing dereferenced during typechecking. 826104470Siwasaki 827104470Siwasaki 828104470Siwasaki---------------------------------------- 829104470Siwasaki29 August 2002. Summary of changes for this release. 830104470Siwasaki 831104470Siwasaki1) ACPI CA Core Subsystem Version 20020829: 832104470Siwasaki 833114237SnjlIf the target of a Scope() operator already exists, it must be an 834114237Snjlobject type that actually opens a scope -- such as a Device, 835114237SnjlMethod, Scope, etc. This is a fatal runtime error. Similar 836114237Snjlerror check has been added to the iASL compiler also. 837104470Siwasaki 838114237SnjlTightened up the namespace load to disallow multiple names in the 839114237Snjlsame scope. This previously was allowed if both objects were of 840114237Snjlthe same type. (i.e., a lookup was the same as entering a new 841114237Snjlname). 842104470Siwasaki 843104470Siwasaki 844104470Siwasaki2) Linux 845104470Siwasaki 846104470SiwasakiEnsure that the ACPI interrupt has the proper trigger and 847104470Siwasakipolarity. 848104470Siwasaki 849104470Siwasakilocal_irq_disable is extraneous. (Matthew Wilcox) 850104470Siwasaki 851104470SiwasakiMake "acpi=off" actually do what it says, and not use the ACPI 852104470Siwasakiinterpreter *or* the tables. 853104470Siwasaki 854104470SiwasakiAdded arch-neutral support for parsing SLIT and SRAT tables 855104470Siwasaki(Kochi Takayoshi) 856104470Siwasaki 857104470Siwasaki 858104470Siwasaki3) iASL Compiler/Disassembler Version 20020829: 859104470Siwasaki 860104470SiwasakiImplemented namepath optimization for name declarations. For 861104470Siwasakiexample, a declaration like "Method (\_SB_.ABCD)" would get 862104470Siwasakioptimized to "Method (ABCD)" if the declaration is within the 863104470Siwasaki\_SB_ scope. This optimization is in addition to the named 864104470Siwasakireference path optimization first released in the previous 865114237Snjlversion. This would seem to complete all possible optimizations 866114237Snjlfor namepaths within the ASL/AML. 867104470Siwasaki 868114237SnjlIf the target of a Scope() operator already exists, it must be an 869114237Snjlobject type that actually opens a scope -- such as a Device, 870114237SnjlMethod, Scope, etc. 871104470Siwasaki 872114237SnjlImplemented a check and warning for unreachable code in the same 873114237Snjlblock below a Return() statement. 874104470Siwasaki 875114237SnjlFixed a problem where the listing file was not generated if the 876114237Snjlcompiler aborted if the maximum error count was exceeded (200). 877104470Siwasaki 878104470SiwasakiFixed a problem where the typechecking of method return values 879114237Snjlwas broken. This includes the check for a return value when the 880114237Snjlmethod is invoked as a TermArg (a return value is expected.) 881104470Siwasaki 882104470SiwasakiFixed a reported problem where EOF conditions during a quoted 883104470Siwasakistring or comment caused a fault. 884104470Siwasaki 885104470Siwasaki 886104470Siwasaki---------------------------------------- 887102550Siwasaki15 August 2002. Summary of changes for this release. 888102550Siwasaki 889102550Siwasaki1) ACPI CA Core Subsystem Version 20020815: 890102550Siwasaki 891114237SnjlFixed a reported problem where a Store to a method argument that 892114237Snjlcontains a reference did not perform the indirect store 893114237Snjlcorrectly. This problem was created during the conversion to the 894114237Snjlnew reference object model - the indirect store to a method 895114237Snjlargument code was not updated to reflect the new model. 896102550Siwasaki 897114237SnjlReworked the ACPI mode change code to better conform to ACPI 2.0, 898114237Snjlhandle corner cases, and improve code legibility (Kochi 899102550SiwasakiTakayoshi) 900102550Siwasaki 901102550SiwasakiFixed a problem with the pathname parsing for the carat (^) 902114237Snjlprefix. The heavy use of the carat operator by the new namepath 903114237Snjloptimization in the iASL compiler uncovered a problem with the 904114237SnjlAML interpreter handling of this prefix. In the case where one 905114237Snjlor more carats precede a single nameseg, the nameseg was treated 906114237Snjlas standalone and the search rule (to root) was inadvertently 907114237Snjlapplied. This could cause both the iASL compiler and the 908114237Snjlinterpreter to find the wrong object or to miss the error that 909114237Snjlshould occur if the object does not exist at that exact pathname. 910102550Siwasaki 911114237SnjlFound and fixed the problem where the HP Pavilion DSDT would not 912114237Snjlload. This was a relatively minor tweak to the table loading 913114237Snjlcode (a problem caused by the unexpected encounter with a method 914114237Snjlinvocation not within a control method), but it does not solve 915114237Snjlthe overall issue of the execution of AML code at the table 916114237Snjllevel. This investigation is still ongoing. 917102550Siwasaki 918102550SiwasakiCode and Data Size: Current core subsystem library sizes are 919102550Siwasakishown below. These are the code and data sizes for the 920114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 921114237Snjlthese values do not include any ACPI driver or OSPM code. The 922114237Snjldebug version of the code includes the debug output trace 923114237Snjlmechanism and has a larger code and data size. Note that these 924114237Snjlvalues will vary depending on the efficiency of the compiler and 925114237Snjlthe compiler options used during generation. 926102550Siwasaki 927102550Siwasaki Previous Release 928104470Siwasaki Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 929104470Siwasaki Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 930102550Siwasaki Current Release: 931104470Siwasaki Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 932104470Siwasaki Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 933102550Siwasaki 934102550Siwasaki 935102550Siwasaki2) Linux 936102550Siwasaki 937102550SiwasakiRemove redundant slab.h include (Brad Hards) 938102550Siwasaki 939102550SiwasakiFix several bugs in thermal.c (Herbert Nachtnebel) 940102550Siwasaki 941102550SiwasakiMake CONFIG_ACPI_BOOT work properly (Pavel Machek) 942102550Siwasaki 943104470SiwasakiChange acpi_system_suspend to use updated irq functions (Pavel 944104470SiwasakiMachek) 945102550Siwasaki 946102550SiwasakiExport acpi_get_firmware_table (Matthew Wilcox) 947102550Siwasaki 948102550SiwasakiUse proper root proc entry for ACPI (Kochi Takayoshi) 949102550Siwasaki 950102550SiwasakiFix early-boot table parsing (Bjorn Helgaas) 951102550Siwasaki 952102550Siwasaki 953102550Siwasaki3) iASL Compiler/Disassembler 954102550Siwasaki 955114237SnjlReworked the compiler options to make them more consistent and to 956114237Snjluse two-letter options where appropriate. We were running out of 957114237Snjlsensible letters. This may break some makefiles, so check the 958114237Snjlcurrent options list by invoking the compiler with no parameters. 959102550Siwasaki 960102550SiwasakiCompleted the design and implementation of the ASL namepath 961114237Snjloptimization option for the compiler. This option optimizes all 962114237Snjlreferences to named objects to the shortest possible path. The 963114237Snjlfirst attempt tries to utilize a single nameseg (4 characters) 964114237Snjland the "search-to-root" algorithm used by the interpreter. If 965114237Snjlthat cannot be used (because either the name is not in the search 966114237Snjlpath or there is a conflict with another object with the same 967114237Snjlname), the pathname is optimized using the carat prefix (usually 968114237Snjla shorter string than specifying the entire path from the root.) 969102550Siwasaki 970114237SnjlImplemented support to obtain the DSDT from the Windows registry 971114237Snjl(when the disassembly option is specified with no input file). 972114237SnjlAdded this code as the implementation for AcpiOsTableOverride in 973114237Snjlthe Windows OSL. Migrated the 16-bit code (used in the AcpiDump 974114237Snjlutility) to scan memory for the DSDT to the AcpiOsTableOverride 975114237Snjlfunction in the DOS OSL to make the disassembler truly OS 976114237Snjlindependent. 977102550Siwasaki 978114237SnjlImplemented a new option to disassemble and compile in one step. 979114237SnjlWhen used without an input filename, this option will grab the 980114237SnjlDSDT from the local machine, disassemble it, and compile it in 981114237Snjlone step. 982102550Siwasaki 983114237SnjlAdded a warning message for invalid escapes (a backslash followed 984114237Snjlby any character other than the allowable escapes). This catches 985114237Snjlthe quoted string error "\_SB_" (which should be "\\_SB_" ). 986114237SnjlAlso, there are numerous instances in the ACPI specification 987114237Snjlwhere this error occurs. 988102550Siwasaki 989104470SiwasakiAdded a compiler option to disable all optimizations. This is 990114237Snjlbasically the "compatibility mode" because by using this option, 991114237Snjlthe AML code will come out exactly the same as other ASL 992114237Snjlcompilers. 993102550Siwasaki 994114237SnjlAdded error messages for incorrectly ordered dependent resource 995114237Snjlfunctions. This includes: missing EndDependentFn macro at end of 996114237Snjldependent resource list, nested dependent function macros (both 997114237Snjlstart and end), and missing StartDependentFn macro. These are 998114237Snjlcommon errors that should be caught at compile time. 999102550Siwasaki 1000114237SnjlImplemented _OSI support for the disassembler and compiler. _OSI 1001114237Snjlmust be included in the namespace for proper disassembly (because 1002114237Snjlthe disassembler must know the number of arguments.) 1003102550Siwasaki 1004104470SiwasakiAdded an "optimization" message type that is optional (off by 1005114237Snjldefault). This message is used for all optimizations - including 1006114237Snjlconstant folding, integer optimization, and namepath 1007104470Siwasakioptimization. 1008102550Siwasaki 1009102550Siwasaki---------------------------------------- 1010102550Siwasaki25 July 2002. Summary of changes for this release. 1011102550Siwasaki 1012102550Siwasaki 1013102550Siwasaki1) ACPI CA Core Subsystem Version 20020725: 1014102550Siwasaki 1015114237SnjlThe AML Disassembler has been enhanced to produce compilable ASL 1016114237Snjlcode and has been integrated into the iASL compiler (see below) 1017114237Snjlas well as the single-step disassembly for the AML debugger and 1018114237Snjlthe disassembler for the AcpiDump utility. All ACPI 2.0A 1019114237Snjlopcodes, resource templates and macros are fully supported. The 1020114237Snjldisassembler has been tested on over 30 different AML files, 1021114237Snjlproducing identical AML when the resulting disassembled ASL file 1022114237Snjlis recompiled with the same ASL compiler. 1023102550Siwasaki 1024114237SnjlModified the Resource Manager to allow zero interrupts and zero 1025114237Snjldma channels during the GetCurrentResources call. This was 1026114237Snjlcausing problems on some platforms. 1027102550Siwasaki 1028114237SnjlAdded the AcpiOsRedirectOutput interface to the OSL to simplify 1029114237Snjloutput redirection for the AcpiOsPrintf and AcpiOsVprintf 1030114237Snjlinterfaces. 1031102550Siwasaki 1032102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1033102550Siwasakishown below. These are the code and data sizes for the 1034114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 1035114237Snjlthese values do not include any ACPI driver or OSPM code. The 1036114237Snjldebug version of the code includes the debug output trace 1037114237Snjlmechanism and has a larger code and data size. Note that these 1038114237Snjlvalues will vary depending on the efficiency of the compiler and 1039114237Snjlthe compiler options used during generation. 1040102550Siwasaki 1041102550Siwasaki Previous Release 1042104470Siwasaki Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 1043104470Siwasaki Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 1044102550Siwasaki Current Release: 1045104470Siwasaki Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 1046104470Siwasaki Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 1047102550Siwasaki 1048102550Siwasaki 1049102550Siwasaki2) Linux 1050102550Siwasaki 1051102550SiwasakiFixed a panic in the EC driver (Dominik Brodowski) 1052102550Siwasaki 1053114237SnjlImplemented checksum of the R/XSDT itself during Linux table scan 1054114237Snjl(Richard Schaal) 1055102550Siwasaki 1056102550Siwasaki 1057102550Siwasaki3) iASL compiler 1058102550Siwasaki 1059114237SnjlThe AML disassembler is integrated into the compiler. The "-d" 1060114237Snjloption invokes the disassembler to completely disassemble an 1061114237Snjlinput AML file, producing as output a text ASL file with the 1062114237Snjlextension ".dsl" (to avoid name collisions with existing .asl 1063114237Snjlsource files.) A future enhancement will allow the disassembler 1064114237Snjlto obtain the BIOS DSDT from the registry under Windows. 1065102550Siwasaki 1066102550SiwasakiFixed a problem with the VendorShort and VendorLong resource 1067102550Siwasakidescriptors where an invalid AML sequence was created. 1068102550Siwasaki 1069114237SnjlImplemented a fix for BufferData term in the ASL parser. It was 1070114237Snjlinadvertently defined twice, allowing invalid syntax to pass and 1071114237Snjlcausing reduction conflicts. 1072102550Siwasaki 1073104470SiwasakiFixed a problem where the Ones opcode could get converted to a 1074104470Siwasakivalue of zero if "Ones" was used where a byte, word or dword 1075104470Siwasakivalue was expected. The 64-bit value is now truncated to the 1076104470Siwasakicorrect size with the correct value. 1077102550Siwasaki 1078102550Siwasaki 1079102550Siwasaki---------------------------------------- 1080102550Siwasaki02 July 2002. Summary of changes for this release. 1081102550Siwasaki 1082102550Siwasaki 1083102550Siwasaki1) ACPI CA Core Subsystem Version 20020702: 1084102550Siwasaki 1085114237SnjlThe Table Manager code has been restructured to add several new 1086114237Snjlfeatures. Tables that are not required by the core subsystem 1087114237Snjl(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 1088114237Snjlvalidated in any way and are returned from AcpiGetFirmwareTable 1089114237Snjlif requested. The AcpiOsTableOverride interface is now called 1090114237Snjlfor each table that is loaded by the subsystem in order to allow 1091114237Snjlthe host to override any table it chooses. Previously, only the 1092114237SnjlDSDT could be overridden. Added one new files, tbrsdt.c and 1093114237Snjltbgetall.c. 1094102550Siwasaki 1095114237SnjlFixed a problem with the conversion of internal package objects 1096114237Snjlto external objects (when a package is returned from a control 1097114237Snjlmethod.) The return buffer length was set to zero instead of the 1098114237Snjlproper length of the package object. 1099102550Siwasaki 1100104470SiwasakiFixed a reported problem with the use of the RefOf and DeRefOf 1101114237Snjloperators when passing reference arguments to control methods. A 1102114237Snjlnew type of Reference object is used internally for references 1103114237Snjlproduced by the RefOf operator. 1104102550Siwasaki 1105102550SiwasakiAdded additional error messages in the Resource Manager to 1106102550Siwasakiexplain AE_BAD_DATA errors when they occur during resource 1107102550Siwasakiparsing. 1108102550Siwasaki 1109104470SiwasakiSplit the AcpiEnableSubsystem into two primitives to enable a 1110104470Siwasakifiner granularity initialization sequence. These two calls 1111104470Siwasakishould be called in this order: AcpiEnableSubsystem (flags), 1112114237SnjlAcpiInitializeObjects (flags). The flags parameter remains the 1113114237Snjlsame. 1114102550Siwasaki 1115102550Siwasaki 1116102550Siwasaki2) Linux 1117102550Siwasaki 1118114237SnjlUpdated the ACPI utilities module to understand the new style of 1119114237Snjlfully resolved package objects that are now returned from the 1120114237Snjlcore subsystem. This eliminates errors of the form: 1121102550Siwasaki 1122102550Siwasaki ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 1123102550Siwasaki acpi_utils-0430 [145] acpi_evaluate_reference: 1124102550Siwasaki Invalid element in package (not a device reference) 1125102550Siwasaki 1126102550SiwasakiThe method evaluation utility uses the new buffer allocation 1127102550Siwasakischeme instead of calling AcpiEvaluate Object twice. 1128102550Siwasaki 1129102550SiwasakiAdded support for ECDT. This allows the use of the Embedded 1130114237SnjlController before the namespace has been fully initialized, which 1131114237Snjlis necessary for ACPI 2.0 support, and for some laptops to 1132114237Snjlinitialize properly. (Laptops using ECDT are still rare, so only 1133114237Snjllimited testing was performed of the added functionality.) 1134102550Siwasaki 1135102550SiwasakiFixed memory leaks in the EC driver. 1136102550Siwasaki 1137102550SiwasakiEliminated a brittle code structure in acpi_bus_init(). 1138102550Siwasaki 1139114237SnjlEliminated the acpi_evaluate() helper function in utils.c. It is 1140114237Snjlno longer needed since acpi_evaluate_object can optionally 1141104470Siwasakiallocate memory for the return object. 1142102550Siwasaki 1143114237SnjlImplemented fix for keyboard hang when getting battery readings 1144114237Snjlon some systems (Stephen White) 1145102550Siwasaki 1146102550SiwasakiPCI IRQ routing update (Dominik Brodowski) 1147102550Siwasaki 1148114237SnjlFix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 1149114237Snjlsupport 1150102550Siwasaki 1151102550Siwasaki---------------------------------------- 1152102550Siwasaki11 June 2002. Summary of changes for this release. 1153102550Siwasaki 1154102550Siwasaki 1155102550Siwasaki1) ACPI CA Core Subsystem Version 20020611: 1156102550Siwasaki 1157104470SiwasakiFixed a reported problem where constants such as Zero and One 1158114237Snjlappearing within _PRT packages were not handled correctly within 1159114237Snjlthe resource manager code. Originally reported against the ASL 1160114237Snjlcompiler because the code generator now optimizes integers to 1161114237Snjltheir minimal AML representation (i.e. AML constants if 1162114237Snjlpossible.) The _PRT code now handles all AML constant opcodes 1163114237Snjlcorrectly (Zero, One, Ones, Revision). 1164102550Siwasaki 1165102550SiwasakiFixed a problem with the Concatenate operator in the AML 1166114237Snjlinterpreter where a buffer result object was incorrectly marked 1167114237Snjlas not fully evaluated, causing a run-time error of 1168102550SiwasakiAE_AML_INTERNAL. 1169102550Siwasaki 1170104470SiwasakiAll package sub-objects are now fully resolved before they are 1171114237Snjlreturned from the external ACPI interfaces. This means that name 1172114237Snjlstrings are resolved to object handles, and constant operators 1173114237Snjl(Zero, One, Ones, Revision) are resolved to Integers. 1174102550Siwasaki 1175102550SiwasakiImplemented immediate resolution of the AML Constant opcodes 1176104470Siwasaki(Zero, One, Ones, Revision) to Integer objects upon detection 1177104470Siwasakiwithin the AML stream. This has simplified and reduced the 1178104470Siwasakigenerated code size of the subsystem by eliminating about 10 1179104470Siwasakiswitch statements for these constants (which previously were 1180104470Siwasakicontained in Reference objects.) The complicating issues are 1181114237Snjlthat the Zero opcode is used as a "placeholder" for unspecified 1182114237Snjloptional target operands and stores to constants are defined to 1183114237Snjlbe no-ops. 1184102550Siwasaki 1185102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1186114237Snjlshown below. These are the code and data sizes for the acpica.lib 1187114237Snjlproduced by the Microsoft Visual C++ 6.0 compiler, and these 1188114237Snjlvalues do not include any ACPI driver or OSPM code. The debug 1189114237Snjlversion of the code includes the debug output trace mechanism and 1190114237Snjlhas a larger code and data size. Note that these values will 1191114237Snjlvary depending on the efficiency of the compiler and the compiler 1192114237Snjloptions used during generation. 1193102550Siwasaki 1194102550Siwasaki Previous Release 1195104470Siwasaki Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 1196104470Siwasaki Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 1197102550Siwasaki Current Release: 1198104470Siwasaki Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 1199104470Siwasaki Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 1200102550Siwasaki 1201102550Siwasaki 1202102550Siwasaki2) Linux 1203102550Siwasaki 1204104470SiwasakiAdded preliminary support for obtaining _TRA data for PCI root 1205104470Siwasakibridges (Bjorn Helgaas). 1206102550Siwasaki 1207102550Siwasaki 1208102550Siwasaki3) iASL Compiler Version X2046: 1209102550Siwasaki 1210114237SnjlFixed a problem where the "_DDN" reserved name was defined to be 1211114237Snjla control method with one argument. There are no arguments, and 1212114237Snjl_DDN does not have to be a control method. 1213102550Siwasaki 1214114237SnjlFixed a problem with the Linux version of the compiler where the 1215114237Snjlsource lines printed with error messages were the wrong lines. 1216114237SnjlThis turned out to be the "LF versus CR/LF" difference between 1217114237SnjlWindows and Unix. This appears to be the longstanding issue 1218114237Snjlconcerning listing output and error messages. 1219102550Siwasaki 1220114237SnjlFixed a problem with the Linux version of compiler where opcode 1221114237Snjlnames within error messages were wrong. This was caused by a 1222114237Snjlslight difference in the output of the Flex tool on Linux versus 1223114237SnjlWindows. 1224102550Siwasaki 1225102550SiwasakiFixed a problem with the Linux compiler where the hex output 1226104470Siwasakifiles contained some garbage data caused by an internal buffer 1227104470Siwasakioverrun. 1228102550Siwasaki 1229102550Siwasaki 1230102550Siwasaki---------------------------------------- 1231102550Siwasaki17 May 2002. Summary of changes for this release. 1232102550Siwasaki 1233102550Siwasaki 1234102550Siwasaki1) ACPI CA Core Subsystem Version 20020517: 1235102550Siwasaki 1236102550SiwasakiImplemented a workaround to an BIOS bug discovered on the HP 1237104470SiwasakiOmniBook where the FADT revision number and the table size are 1238104470Siwasakiinconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The 1239114237Snjlnew behavior is to fallback to using only the ACPI 1.0 fields of 1240114237Snjlthe FADT if the table is too small to be a ACPI 2.0 table as 1241114237Snjlclaimed by the revision number. Although this is a BIOS bug, 1242114237Snjlthis is a case where the workaround is simple enough and with no 1243114237Snjlside effects, so it seemed prudent to add it. A warning message 1244114237Snjlis issued, however. 1245102550Siwasaki 1246114237SnjlImplemented minimum size checks for the fixed-length ACPI tables 1247114237Snjl-- the FADT and FACS, as well as consistency checks between the 1248114237Snjlrevision number and the table size. 1249102550Siwasaki 1250114237SnjlFixed a reported problem in the table override support where the 1251114237Snjlnew table pointer was incorrectly treated as a physical address 1252114237Snjlinstead of a logical address. 1253102550Siwasaki 1254114237SnjlEliminated the use of the AE_AML_ERROR exception and replaced it 1255114237Snjlwith more descriptive codes. 1256102550Siwasaki 1257104470SiwasakiFixed a problem where an exception would occur if an ASL Field 1258114237Snjlwas defined with no named Field Units underneath it (used by some 1259114237Snjlindex fields). 1260102550Siwasaki 1261102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1262102550Siwasakishown below. These are the code and data sizes for the 1263114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 1264114237Snjlthese values do not include any ACPI driver or OSPM code. The 1265114237Snjldebug version of the code includes the debug output trace 1266114237Snjlmechanism and has a larger code and data size. Note that these 1267114237Snjlvalues will vary depending on the efficiency of the compiler and 1268114237Snjlthe compiler options used during generation. 1269102550Siwasaki 1270102550Siwasaki Previous Release 1271104470Siwasaki Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 1272104470Siwasaki Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 1273102550Siwasaki Current Release: 1274104470Siwasaki Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 1275104470Siwasaki Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 1276102550Siwasaki 1277102550Siwasaki 1278102550Siwasaki 1279102550Siwasaki2) Linux 1280102550Siwasaki 1281114237SnjlMuch work done on ACPI init (MADT and PCI IRQ routing support). 1282114237Snjl(Paul D. and Dominik Brodowski) 1283102550Siwasaki 1284102550SiwasakiFix PCI IRQ-related panic on boot (Sam Revitch) 1285102550Siwasaki 1286102550SiwasakiSet BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 1287102550Siwasaki 1288102550SiwasakiFix "MHz" typo (Dominik Brodowski) 1289102550Siwasaki 1290102550SiwasakiFix RTC year 2000 issue (Dominik Brodowski) 1291102550Siwasaki 1292102550SiwasakiPreclude multiple button proc entries (Eric Brunet) 1293102550Siwasaki 1294102550SiwasakiMoved arch-specific code out of include/platform/aclinux.h 1295102550Siwasaki 1296102550Siwasaki3) iASL Compiler Version X2044: 1297102550Siwasaki 1298102550SiwasakiImplemented error checking for the string used in the EISAID 1299114237Snjlmacro (Usually used in the definition of the _HID object.) The 1300114237Snjlcode now strictly enforces the PnP format - exactly 7 characters, 1301114237Snjl3 uppercase letters and 4 hex digits. 1302102550Siwasaki 1303102550SiwasakiIf a raw string is used in the definition of the _HID object 1304102550Siwasaki(instead of the EISAID macro), the string must contain all 1305114237Snjlalphanumeric characters (e.g., "*PNP0011" is not allowed because 1306114237Snjlof the asterisk.) 1307102550Siwasaki 1308114237SnjlImplemented checking for invalid use of ACPI reserved names for 1309114237Snjlmost of the name creation operators (Name, Device, Event, Mutex, 1310114237SnjlOperationRegion, PowerResource, Processor, and ThermalZone.) 1311114237SnjlPreviously, this check was only performed for control methods. 1312102550Siwasaki 1313114237SnjlImplemented an additional check on the Name operator to emit an 1314114237Snjlerror if a reserved name that must be implemented in ASL as a 1315114237Snjlcontrol method is used. We know that a reserved name must be a 1316114237Snjlmethod if it is defined with input arguments. 1317102550Siwasaki 1318102550SiwasakiThe warning emitted when a namespace object reference is not 1319114237Snjlfound during the cross reference phase has been changed into an 1320114237Snjlerror. The "External" directive should be used for names defined 1321114237Snjlin other modules. 1322102550Siwasaki 1323102550Siwasaki 1324102550Siwasaki4) Tools and Utilities 1325102550Siwasaki 1326114237SnjlThe 16-bit tools (adump16 and aexec16) have been regenerated and 1327114237Snjltested. 1328102550Siwasaki 1329102550SiwasakiFixed a problem with the output of both acpidump and adump16 1330114237Snjlwhere the indentation of closing parentheses and brackets was not 1331114237Snjlaligned properly with the parent block. 1332102550Siwasaki 1333102550Siwasaki 1334102550Siwasaki---------------------------------------- 1335102550Siwasaki03 May 2002. Summary of changes for this release. 1336102550Siwasaki 1337102550Siwasaki 1338102550Siwasaki1) ACPI CA Core Subsystem Version 20020503: 1339102550Siwasaki 1340114237SnjlAdded support a new OSL interface that allows the host operating 1341114237Snjlsystem software to override the DSDT found in the firmware - 1342114237SnjlAcpiOsTableOverride. With this interface, the OSL can examine 1343114237Snjlthe version of the firmware DSDT and replace it with a different 1344114237Snjlone if desired. 1345102550Siwasaki 1346114237SnjlAdded new external interfaces for accessing ACPI registers from 1347114237Snjldevice drivers and other system software - AcpiGetRegister and 1348114237SnjlAcpiSetRegister. This was simply an externalization of the 1349114237Snjlexisting AcpiHwBitRegister interfaces. 1350102550Siwasaki 1351104470SiwasakiFixed a regression introduced in the previous build where the 1352104470SiwasakiASL/AML CreateField operator always returned an error, 1353102550Siwasaki"destination must be a NS Node". 1354102550Siwasaki 1355114237SnjlExtended the maximum time (before failure) to successfully enable 1356114237SnjlACPI mode to 3 seconds. 1357102550Siwasaki 1358102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1359102550Siwasakishown below. These are the code and data sizes for the 1360114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 1361114237Snjlthese values do not include any ACPI driver or OSPM code. The 1362114237Snjldebug version of the code includes the debug output trace 1363114237Snjlmechanism and has a larger code and data size. Note that these 1364114237Snjlvalues will vary depending on the efficiency of the compiler and 1365114237Snjlthe compiler options used during generation. 1366102550Siwasaki 1367102550Siwasaki Previous Release 1368104470Siwasaki Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 1369104470Siwasaki Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 1370102550Siwasaki Current Release: 1371104470Siwasaki Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 1372104470Siwasaki Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 1373102550Siwasaki 1374102550Siwasaki 1375102550Siwasaki2) Linux 1376102550Siwasaki 1377104470SiwasakiEnhanced ACPI init code for SMP. We are now fully MPS and $PIR- 1378104470Siwasakifree. While 3 out of 4 of our in-house systems work fine, the 1379104470Siwasakilast one still hangs when testing the LAPIC timer. 1380102550Siwasaki 1381114237SnjlRenamed many files in 2.5 kernel release to omit "acpi_" from the 1382114237Snjlname. 1383102550Siwasaki 1384102550SiwasakiAdded warning on boot for Presario 711FR. 1385102550Siwasaki 1386102550SiwasakiSleep improvements (Pavel Machek) 1387102550Siwasaki 1388102550SiwasakiACPI can now be built without CONFIG_PCI enabled. 1389102550Siwasaki 1390102550SiwasakiIA64: Fixed memory map functions (JI Lee) 1391102550Siwasaki 1392102550Siwasaki 1393102550Siwasaki3) iASL Compiler Version X2043: 1394102550Siwasaki 1395114237SnjlAdded support to allow the compiler to be integrated into the MS 1396114237SnjlVC++ development environment for one-button compilation of single 1397114237Snjlfiles or entire projects -- with error-to-source-line mapping. 1398102550Siwasaki 1399104470SiwasakiImplemented support for compile-time constant folding for the 1400104470SiwasakiType3, Type4, and Type5 opcodes first defined in the ACPI 2.0 1401104470Siwasakispecification. This allows the ASL writer to use expressions 1402104470Siwasakiinstead of Integer/Buffer/String constants in terms that must 1403114237Snjlevaluate to constants at compile time and will also simplify the 1404114237Snjlemitted AML in any such sub-expressions that can be folded 1405104470Siwasaki(evaluated at compile-time.) This increases the size of the 1406104470Siwasakicompiler significantly because a portion of the ACPI CA AML 1407104470Siwasakiinterpreter is included within the compiler in order to pre- 1408104470Siwasakievaluate constant expressions. 1409102550Siwasaki 1410114237Snjl 1411102550SiwasakiFixed a problem with the "Unicode" ASL macro that caused the 1412114237Snjlcompiler to fault. (This macro is used in conjunction with the 1413114237Snjl_STR reserved name.) 1414102550Siwasaki 1415114237SnjlImplemented an AML opcode optimization to use the Zero, One, and 1416114237SnjlOnes opcodes where possible to further reduce the size of integer 1417114237Snjlconstants and thus reduce the overall size of the generated AML 1418114237Snjlcode. 1419102550Siwasaki 1420102550SiwasakiImplemented error checking for new reserved terms for ACPI 1421102550Siwasakiversion 2.0A. 1422102550Siwasaki 1423104470SiwasakiImplemented the -qr option to display the current list of ACPI 1424104470Siwasakireserved names known to the compiler. 1425102550Siwasaki 1426104470SiwasakiImplemented the -qc option to display the current list of ASL 1427104470Siwasakioperators that are allowed within constant expressions and can 1428104470Siwasakitherefore be folded at compile time if the operands are 1429104470Siwasakiconstants. 1430102550Siwasaki 1431102550Siwasaki 1432102550Siwasaki4) Documentation 1433102550Siwasaki 1434102550SiwasakiUpdated the Programmer's Reference for new interfaces, data 1435102550Siwasakitypes, and memory allocation model options. 1436102550Siwasaki 1437114237SnjlUpdated the iASL Compiler User Reference to apply new format and 1438114237Snjladd information about new features and options. 1439102550Siwasaki 1440102550Siwasaki---------------------------------------- 1441102550Siwasaki19 April 2002. Summary of changes for this release. 1442102550Siwasaki 1443102550Siwasaki1) ACPI CA Core Subsystem Version 20020419: 1444102550Siwasaki 1445114237SnjlThe source code base for the Core Subsystem has been completely 1446114237Snjlcleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 1447114237Snjlversions. The Lint option files used are included in the 1448114237Snjl/acpi/generate/lint directory. 1449102550Siwasaki 1450102550SiwasakiImplemented enhanced status/error checking across the entire 1451114237SnjlHardware manager subsystem. Any hardware errors (reported from 1452114237Snjlthe OSL) are now bubbled up and will abort a running control 1453114237Snjlmethod. 1454102550Siwasaki 1455114237SnjlFixed a problem where the per-ACPI-table integer width (32 or 64) 1456114237Snjlwas stored only with control method nodes, causing a fault when 1457114237Snjlnon-control method code was executed during table loading. The 1458114237Snjlsolution implemented uses a global variable to indicate table 1459114237Snjlwidth across the entire ACPI subsystem. Therefore, ACPI CA does 1460114237Snjlnot support mixed integer widths across different ACPI tables 1461114237Snjl(DSDT, SSDT). 1462102550Siwasaki 1463114237SnjlFixed a problem where NULL extended fields (X fields) in an ACPI 1464114237Snjl2.0 ACPI FADT caused the table load to fail. Although the 1465114237Snjlexisting ACPI specification is a bit fuzzy on this topic, the new 1466114237Snjlbehavior is to fall back on a ACPI 1.0 field if the corresponding 1467114237SnjlACPI 2.0 X field is zero (even though the table revision 1468114237Snjlindicates a full ACPI 2.0 table.) The ACPI specification will be 1469114237Snjlupdated to clarify this issue. 1470102550Siwasaki 1471104470SiwasakiFixed a problem with the SystemMemory operation region handler 1472104470Siwasakiwhere memory was always accessed byte-wise even if the AML- 1473104470Siwasakispecified access width was larger than a byte. This caused 1474104470Siwasakiproblems on systems with memory-mapped I/O. Memory is now 1475104470Siwasakiaccessed with the width specified. On systems that do not 1476104470Siwasakisupport non-aligned transfers, a check is made to guarantee 1477114237Snjlproper address alignment before proceeding in order to avoid an 1478114237SnjlAML-caused alignment fault within the kernel. 1479102550Siwasaki 1480102550Siwasaki 1481114237SnjlFixed a problem with the ExtendedIrq resource where only one byte 1482114237Snjlof the 4-byte Irq field was extracted. 1483102550Siwasaki 1484114237SnjlFixed the AcpiExDigitsNeeded() procedure to support _UID. This 1485114237Snjlfunction was out of date and required a rewrite. 1486114237Snjl 1487102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1488102550Siwasakishown below. These are the code and data sizes for the 1489114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 1490114237Snjlthese values do not include any ACPI driver or OSPM code. The 1491114237Snjldebug version of the code includes the debug output trace 1492114237Snjlmechanism and has a larger code and data size. Note that these 1493114237Snjlvalues will vary depending on the efficiency of the compiler and 1494114237Snjlthe compiler options used during generation. 1495102550Siwasaki 1496102550Siwasaki Previous Release 1497104470Siwasaki Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 1498104470Siwasaki Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 1499102550Siwasaki Current Release: 1500104470Siwasaki Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 1501104470Siwasaki Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 1502102550Siwasaki 1503102550Siwasaki 1504102550Siwasaki2) Linux 1505102550Siwasaki 1506102550SiwasakiPCI IRQ routing fixes (Dominik Brodowski) 1507102550Siwasaki 1508102550Siwasaki 1509102550Siwasaki3) iASL Compiler Version X2042: 1510102550Siwasaki 1511104470SiwasakiImplemented an additional compile-time error check for a field 1512104470Siwasakiunit whose size + minimum access width would cause a run-time 1513114237Snjlaccess beyond the end-of-region. Previously, only the field size 1514114237Snjlitself was checked. 1515102550Siwasaki 1516104470SiwasakiThe Core subsystem and iASL compiler now share a common parse 1517104470Siwasakiobject in preparation for compile-time evaluation of the type 1518104470Siwasaki3/4/5 ASL operators. 1519102550Siwasaki 1520102550Siwasaki 1521102550Siwasaki---------------------------------------- 1522102550SiwasakiSummary of changes for this release: 03_29_02 1523102550Siwasaki 1524102550Siwasaki1) ACPI CA Core Subsystem Version 20020329: 1525102550Siwasaki 1526104470SiwasakiImplemented support for late evaluation of TermArg operands to 1527114237SnjlBuffer and Package objects. This allows complex expressions to 1528114237Snjlbe used in the declarations of these object types. 1529102550Siwasaki 1530104470SiwasakiFixed an ACPI 1.0 compatibility issue when reading Fields. In 1531114237SnjlACPI 1.0, if the field was larger than 32 bits, it was returned 1532114237Snjlas a buffer - otherwise it was returned as an integer. In ACPI 1533114237Snjl2.0, the field is returned as a buffer only if the field is 1534114237Snjllarger than 64 bits. The TableRevision is now considered when 1535114237Snjlmaking this conversion to avoid incompatibility with existing ASL 1536114237Snjlcode. 1537102550Siwasaki 1538104470SiwasakiImplemented logical addressing for AcpiOsGetRootPointer. This 1539114237Snjlallows an RSDP with either a logical or physical address. With 1540114237Snjlthis support, the host OS can now override all ACPI tables with 1541114237Snjlone logical RSDP. Includes implementation of "typed" pointer 1542114237Snjlsupport to allow a common data type for both physical and logical 1543114237Snjlpointers internally. This required a change to the 1544114237SnjlAcpiOsGetRootPointer interface. 1545102550Siwasaki 1546104470SiwasakiImplemented the use of ACPI 2.0 Generic Address Structures for 1547114237Snjlall GPE, Fixed Event, and PM Timer I/O. This allows the use of 1548114237Snjlmemory mapped I/O for these ACPI features. 1549102550Siwasaki 1550102550SiwasakiInitialization now ignores not only non-required tables (All 1551114237Snjltables other than the FADT, FACS, DSDT, and SSDTs), but also does 1552114237Snjlnot validate the table headers of unrecognized tables. 1553102550Siwasaki 1554102550SiwasakiFixed a problem where a notify handler could only be 1555102550Siwasakiinstalled/removed on an object of type Device. All "notify" 1556102550Siwasakiobjects are now supported -- Devices, Processor, Power, and 1557102550SiwasakiThermal. 1558102550Siwasaki 1559114237SnjlRemoved most verbosity from the ACPI_DB_INFO debug level. Only 1560114237Snjlcritical information is returned when this debug level is 1561104470Siwasakienabled. 1562102550Siwasaki 1563102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1564102550Siwasakishown below. These are the code and data sizes for the 1565114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 1566114237Snjlthese values do not include any ACPI driver or OSPM code. The 1567114237Snjldebug version of the code includes the debug output trace 1568114237Snjlmechanism and has a larger code and data size. Note that these 1569114237Snjlvalues will vary depending on the efficiency of the compiler and 1570114237Snjlthe compiler options used during generation. 1571102550Siwasaki 1572102550Siwasaki Previous Release 1573104470Siwasaki Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 1574104470Siwasaki Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 1575102550Siwasaki Current Release: 1576104470Siwasaki Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 1577104470Siwasaki Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 1578102550Siwasaki 1579102550Siwasaki 1580102550Siwasaki2) Linux: 1581102550Siwasaki 1582114237SnjlThe processor driver (acpi_processor.c) now fully supports ACPI 1583114237Snjl2.0-based processor performance control (e.g. Intel(R) 1584114237SnjlSpeedStep(TM) technology) Note that older laptops that only have 1585114237Snjlthe Intel "applet" interface are not supported through this. The 1586114237Snjl'limit' and 'performance' interface (/proc) are fully functional. 1587114237Snjl[Note that basic policy for controlling performance state 1588114237Snjltransitions will be included in the next version of ospmd.] The 1589114237Snjlidle handler was modified to more aggressively use C2, and PIIX4 1590114237Snjlerrata handling underwent a complete overhaul (big thanks to 1591114237SnjlDominik Brodowski). 1592102550Siwasaki 1593114237SnjlAdded support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 1594114237Snjlbased devices in the ACPI namespace are now dynamically bound 1595114237Snjl(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 1596114237SnjlThis allows, among other things, ACPI to resolve bus numbers for 1597114237Snjlsubordinate PCI bridges. 1598102550Siwasaki 1599104470SiwasakiEnhanced PCI IRQ routing to get the proper bus number for _PRT 1600104470Siwasakientries defined underneath PCI bridges. 1601102550Siwasaki 1602104470SiwasakiAdded IBM 600E to bad bios list due to invalid _ADR value for 1603104470SiwasakiPIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 1604102550Siwasaki 1605114237SnjlIn the process of adding full MADT support (e.g. IOAPIC) for IA32 1606114237Snjl(acpi.c, mpparse.c) -- stay tuned. 1607102550Siwasaki 1608102550SiwasakiAdded back visual differentiation between fixed-feature and 1609114237Snjlcontrol-method buttons in dmesg. Buttons are also subtyped (e.g. 1610114237Snjlbutton/power/PWRF) to simplify button identification. 1611102550Siwasaki 1612114237SnjlWe no longer use -Wno-unused when compiling debug. Please ignore 1613114237Snjlany "_THIS_MODULE defined but not used" messages. 1614102550Siwasaki 1615102550SiwasakiCan now shut down the system using "magic sysrq" key. 1616102550Siwasaki 1617102550Siwasaki 1618102550Siwasaki3) iASL Compiler version 2041: 1619102550Siwasaki 1620104470SiwasakiFixed a problem where conversion errors for hex/octal/decimal 1621104470Siwasakiconstants were not reported. 1622102550Siwasaki 1623102550SiwasakiImplemented a fix for the General Register template Address 1624102550Siwasakifield. This field was 8 bits when it should be 64. 1625102550Siwasaki 1626102550SiwasakiFixed a problem where errors/warnings were no longer being 1627102550Siwasakiemitted within the listing output file. 1628102550Siwasaki 1629114237SnjlImplemented the ACPI 2.0A restriction on ACPI Table Signatures to 1630114237Snjlexactly 4 characters, alphanumeric only. 1631102550Siwasaki 1632102550Siwasaki 1633102550Siwasaki 1634102550Siwasaki 1635102550Siwasaki---------------------------------------- 1636102550SiwasakiSummary of changes for this release: 03_08_02 1637102550Siwasaki 1638102550Siwasaki 1639102550Siwasaki1) ACPI CA Core Subsystem Version 20020308: 1640102550Siwasaki 1641114237SnjlFixed a problem with AML Fields where the use of the "AccessAny" 1642114237Snjlkeyword could cause an interpreter error due to attempting to 1643114237Snjlread or write beyond the end of the parent Operation Region. 1644102550Siwasaki 1645102550SiwasakiFixed a problem in the SystemMemory Operation Region handler 1646104470Siwasakiwhere an attempt was made to map memory beyond the end of the 1647104470Siwasakiregion. This was the root cause of the "AE_ERROR" and 1648102550Siwasaki"AE_NO_MEMORY" errors on some Linux systems. 1649102550Siwasaki 1650114237SnjlFixed a problem where the interpreter/namespace "search to root" 1651114237Snjlalgorithm was not functioning for some object types. Relaxed the 1652114237Snjlinternal restriction on the search to allow upsearches for all 1653114237Snjlexternal object types as well as most internal types. 1654102550Siwasaki 1655102550Siwasaki 1656102550Siwasaki2) Linux: 1657102550Siwasaki 1658104470SiwasakiWe now use safe_halt() macro versus individual calls to sti | 1659104470Siwasakihlt. 1660102550Siwasaki 1661114237SnjlWriting to the processor limit interface should now work. "echo 1662114237Snjl1" will increase the limit, 2 will decrease, and 0 will reset to 1663114237Snjlthe default. 1664102550Siwasaki 1665102550Siwasaki 1666102550Siwasaki3) ASL compiler: 1667102550Siwasaki 1668102550SiwasakiFixed segfault on Linux version. 1669102550Siwasaki 1670102550Siwasaki 1671102550Siwasaki---------------------------------------- 1672102550SiwasakiSummary of changes for this release: 02_25_02 1673102550Siwasaki 1674102550Siwasaki1) ACPI CA Core Subsystem: 1675102550Siwasaki 1676102550Siwasaki 1677102550SiwasakiFixed a problem where the GPE bit masks were not initialized 1678102550Siwasakiproperly, causing erratic GPE behavior. 1679102550Siwasaki 1680104470SiwasakiImplemented limited support for multiple calling conventions. 1681114237SnjlThe code can be generated with either the VPL (variable parameter 1682114237Snjllist, or "C") convention, or the FPL (fixed parameter list, or 1683114237Snjl"Pascal") convention. The core subsystem is about 3.4% smaller 1684114237Snjlwhen generated with FPL. 1685102550Siwasaki 1686102550Siwasaki 1687102550Siwasaki2) Linux 1688102550Siwasaki 1689114237SnjlRe-add some /proc/acpi/event functionality that was lost during 1690114237Snjlthe rewrite 1691102550Siwasaki 1692102550SiwasakiResolved issue with /proc events for fixed-feature buttons 1693102550Siwasakishowing up as the system device. 1694102550Siwasaki 1695102550SiwasakiFixed checks on C2/C3 latencies to be inclusive of maximum 1696102550Siwasakivalues. 1697102550Siwasaki 1698114237SnjlReplaced AE_ERRORs in acpi_osl.c with more specific error codes. 1699102550Siwasaki 1700114237SnjlChanged ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 1701102550Siwasaki 1702104470SiwasakiFixed limit interface & usage to fix bugs with passive cooling 1703104470Siwasakihysterisis. 1704102550Siwasaki 1705102550SiwasakiRestructured PRT support. 1706102550Siwasaki 1707102550Siwasaki 1708102550Siwasaki---------------------------------------- 1709102550SiwasakiSummary of changes for this label: 02_14_02 1710102550Siwasaki 1711102550Siwasaki 1712102550Siwasaki1) ACPI CA Core Subsystem: 1713102550Siwasaki 1714114237SnjlImplemented support in AcpiLoadTable to allow loading of FACS and 1715114237SnjlFADT tables. 1716102550Siwasaki 1717114237SnjlSuport for the now-obsolete interim 0.71 64-bit ACPI tables has 1718114237Snjlbeen removed. All 64-bit platforms should be migrated to the 1719114237SnjlACPI 2.0 tables. The actbl71.h header has been removed from the 1720114237Snjlsource tree. 1721102550Siwasaki 1722114237SnjlAll C macros defined within the subsystem have been prefixed with 1723114237Snjl"ACPI_" to avoid collision with other system include files. 1724102550Siwasaki 1725102550SiwasakiRemoved the return value for the two AcpiOsPrint interfaces, 1726114237Snjlsince it is never used and causes lint warnings for ignoring the 1727114237Snjlreturn value. 1728102550Siwasaki 1729104470SiwasakiAdded error checking to all internal mutex acquire and release 1730104470Siwasakicalls. Although a failure from one of these interfaces is 1731104470Siwasakiprobably a fatal system error, these checks will cause the 1732114237Snjlimmediate abort of the currently executing method or interface. 1733102550Siwasaki 1734114237SnjlFixed a problem where the AcpiSetCurrentResources interface could 1735114237Snjlfault. This was a side effect of the deployment of the new 1736114237Snjlmemory allocation model. 1737102550Siwasaki 1738102550SiwasakiFixed a couple of problems with the Global Lock support 1739102550Siwasakiintroduced in the last major build. The "common" (1.0/2.0) 1740114237Snjlinternal FACS was being overwritten with the FACS signature and 1741114237Snjlclobbering the Global Lock pointer. Also, the actual firmware 1742114237SnjlFACS was being unmapped after construction of the "common" FACS, 1743114237Snjlpreventing access to the actual Global Lock field within it. The 1744114237Snjl"common" internal FACS is no longer installed as an actual ACPI 1745114237Snjltable; it is used simply as a global. 1746102550Siwasaki 1747102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1748102550Siwasakishown below. These are the code and data sizes for the 1749114237Snjlacpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 1750114237Snjlthese values do not include any ACPI driver or OSPM code. The 1751114237Snjldebug version of the code includes the debug output trace 1752114237Snjlmechanism and has a larger code and data size. Note that these 1753114237Snjlvalues will vary depending on the efficiency of the compiler and 1754114237Snjlthe compiler options used during generation. 1755102550Siwasaki 1756102550Siwasaki Previous Release (02_07_01) 1757104470Siwasaki Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 1758104470Siwasaki Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 1759102550Siwasaki Current Release: 1760104470Siwasaki Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 1761104470Siwasaki Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 1762102550Siwasaki 1763102550Siwasaki 1764102550Siwasaki2) Linux 1765102550Siwasaki 1766102550SiwasakiUpdated Linux-specific code for core macro and OSL interface 1767102550Siwasakichanges described above. 1768102550Siwasaki 1769114237SnjlImproved /proc/acpi/event. It now can be opened only once and has 1770114237Snjlproper poll functionality. 1771102550Siwasaki 1772102550SiwasakiFixed and restructured power management (acpi_bus). 1773102550Siwasaki 1774102550SiwasakiOnly create /proc "view by type" when devices of that class 1775102550Siwasakiexist. 1776102550Siwasaki 1777104470SiwasakiFixed "charging/discharging" bug (and others) in acpi_battery. 1778102550Siwasaki 1779102550SiwasakiImproved thermal zone code. 1780102550Siwasaki 1781102550Siwasaki 1782102550Siwasaki3) ASL Compiler, version X2039: 1783102550Siwasaki 1784114237Snjl 1785114237SnjlImplemented the new compiler restriction on ASL String hex/octal 1786114237Snjlescapes to non-null, ASCII values. An error results if an 1787114237Snjlinvalid value is used. (This will require an ACPI 2.0 1788104470Siwasakispecification change.) 1789102550Siwasaki 1790102550SiwasakiAML object labels that are output to the optional C and ASM 1791104470Siwasakisource are now prefixed with both the ACPI table signature and 1792104470Siwasakitable ID to help guarantee uniqueness within a large BIOS 1793104470Siwasakiproject. 1794102550Siwasaki 1795102550Siwasaki 1796102550Siwasaki---------------------------------------- 1797102550SiwasakiSummary of changes for this label: 02_01_02 1798102550Siwasaki 1799102550Siwasaki1) ACPI CA Core Subsystem: 1800102550Siwasaki 1801114237SnjlACPI 2.0 support is complete in the entire Core Subsystem and the 1802114237SnjlASL compiler. All new ACPI 2.0 operators are implemented and all 1803114237Snjlother changes for ACPI 2.0 support are complete. With 1804104470Siwasakisimultaneous code and data optimizations throughout the 1805114237Snjlsubsystem, ACPI 2.0 support has been implemented with almost no 1806114237Snjladditional cost in terms of code and data size. 1807102550Siwasaki 1808114237SnjlImplemented a new mechanism for allocation of return buffers. If 1809114237Snjlthe buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 1810114237Snjlbe allocated on behalf of the caller. Consolidated all return 1811114237Snjlbuffer validation and allocation to a common procedure. Return 1812114237Snjlbuffers will be allocated via the primary OSL allocation 1813114237Snjlinterface since it appears that a separate pool is not needed by 1814114237Snjlmost users. If a separate pool is required for these buffers, 1815114237Snjlthe caller can still use the original mechanism and pre-allocate 1816114237Snjlthe buffer(s). 1817102550Siwasaki 1818102550SiwasakiImplemented support for string operands within the DerefOf 1819102550Siwasakioperator. 1820102550Siwasaki 1821114237SnjlRestructured the Hardware and Event managers to be table driven, 1822114237Snjlsimplifying the source code and reducing the amount of generated 1823114237Snjlcode. 1824102550Siwasaki 1825102550SiwasakiSplit the common read/write low-level ACPI register bitfield 1826104470Siwasakiprocedure into a separate read and write, simplifying the code 1827104470Siwasakiconsiderably. 1828102550Siwasaki 1829114237SnjlObsoleted the AcpiOsCallocate OSL interface. This interface was 1830114237Snjlused only a handful of times and didn't have enough critical mass 1831114237Snjlfor a separate interface. Replaced with a common calloc 1832114237Snjlprocedure in the core. 1833102550Siwasaki 1834104470SiwasakiFixed a reported problem with the GPE number mapping mechanism 1835104470Siwasakithat allows GPE1 numbers to be non-contiguous with GPE0. 1836114237SnjlReorganized the GPE information and shrunk a large array that was 1837114237Snjloriginally large enough to hold info for all possible GPEs (256) 1838114237Snjlto simply large enough to hold all GPEs up to the largest GPE 1839114237Snjlnumber on the machine. 1840102550Siwasaki 1841114237SnjlFixed a reported problem with resource structure alignment on 64- 1842114237Snjlbit platforms. 1843102550Siwasaki 1844102550SiwasakiChanged the AcpiEnableEvent and AcpiDisableEvent external 1845102550Siwasakiinterfaces to not require any flags for the common case of 1846102550Siwasakienabling/disabling a GPE. 1847102550Siwasaki 1848104470SiwasakiImplemented support to allow a "Notify" on a Processor object. 1849102550Siwasaki 1850114237SnjlMost TBDs in comments within the source code have been resolved 1851114237Snjland eliminated. 1852102550Siwasaki 1853102550SiwasakiFixed a problem in the interpreter where a standalone parent 1854102550Siwasakiprefix (^) was not handled correctly in the interpreter and 1855102550Siwasakidebugger. 1856102550Siwasaki 1857102550SiwasakiRemoved obsolete and unnecessary GPE save/restore code. 1858102550Siwasaki 1859114237SnjlImplemented Field support in the ASL Load operator. This allows 1860114237Snjla table to be loaded from a named field, in addition to loading a 1861114237Snjltable directly from an Operation Region. 1862102550Siwasaki 1863104470SiwasakiImplemented timeout and handle support in the external Global 1864104470SiwasakiLock interfaces. 1865102550Siwasaki 1866114237SnjlFixed a problem in the AcpiDump utility where pathnames were no 1867114237Snjllonger being generated correctly during the dump of named 1868102550Siwasakiobjects. 1869102550Siwasaki 1870102550SiwasakiModified the AML debugger to give a full display of if/while 1871102550Siwasakipredicates instead of just one AML opcode at a time. (The 1872102550Siwasakipredicate can have several nested ASL statements.) The old 1873102550Siwasakimethod was confusing during single stepping. 1874102550Siwasaki 1875102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1876114237Snjlshown below. These are the code and data sizes for the acpica.lib 1877114237Snjlproduced by the Microsoft Visual C++ 6.0 compiler, and these 1878114237Snjlvalues do not include any ACPI driver or OSPM code. The debug 1879114237Snjlversion of the code includes the debug output trace mechanism and 1880114237Snjlhas a larger code and data size. Note that these values will 1881114237Snjlvary depending on the efficiency of the compiler and the compiler 1882114237Snjloptions used during generation. 1883102550Siwasaki 1884102550Siwasaki Previous Release (12_18_01) 1885114237Snjl Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 1886114237Snjl Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 1887102550Siwasaki Current Release: 1888114237Snjl Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 1889114237Snjl Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 1890102550Siwasaki 1891102550Siwasaki2) Linux 1892102550Siwasaki 1893104470Siwasaki Implemented fix for PIIX reverse throttling errata (Processor 1894104470Siwasakidriver) 1895102550Siwasaki 1896102550SiwasakiAdded new Limit interface (Processor and Thermal drivers) 1897102550Siwasaki 1898102550SiwasakiNew thermal policy (Thermal driver) 1899102550Siwasaki 1900102550SiwasakiMany updates to /proc 1901102550Siwasaki 1902102550SiwasakiBattery "low" event support (Battery driver) 1903102550Siwasaki 1904104470SiwasakiSupports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 1905102550Siwasaki 1906104470SiwasakiIA32 - IA64 initialization unification, no longer experimental 1907102550Siwasaki 1908102550SiwasakiMenuconfig options redesigned 1909102550Siwasaki 1910102550Siwasaki3) ASL Compiler, version X2037: 1911102550Siwasaki 1912114237SnjlImplemented several new output features to simplify integration 1913114237Snjlof AML code into firmware: 1) Output the AML in C source code 1914114237Snjlwith labels for each named ASL object. The original ASL 1915114237Snjlsource code is interleaved as C comments. 2) Output the AML in 1916114237SnjlASM source code with labels and interleaved ASL source. 3) 1917114237SnjlOutput the AML in raw hex table form, in either C or ASM. 1918102550Siwasaki 1919102550SiwasakiImplemented support for optional string parameters to the 1920102550SiwasakiLoadTable operator. 1921102550Siwasaki 1922104470SiwasakiCompleted support for embedded escape sequences within string 1923114237Snjlliterals. The compiler now supports all single character escapes 1924114237Snjlas well as the Octal and Hex escapes. Note: the insertion of a 1925114237Snjlnull byte into a string literal (via the hex/octal escape) causes 1926114237Snjlthe string to be immediately terminated. A warning is issued. 1927102550Siwasaki 1928104470SiwasakiFixed a problem where incorrect AML was generated for the case 1929104470Siwasakiwhere an ASL namepath consists of a single parent prefix ( 1930102550Siwasaki 1931102550Siwasaki) with no trailing name segments. 1932102550Siwasaki 1933102550SiwasakiThe compiler has been successfully generated with a 64-bit C 1934102550Siwasakicompiler. 1935102550Siwasaki 1936102550Siwasaki 1937102550Siwasaki 1938102550Siwasaki 1939102550Siwasaki---------------------------------------- 1940102550SiwasakiSummary of changes for this label: 12_18_01 1941102550Siwasaki 1942102550Siwasaki1) Linux 1943102550Siwasaki 1944114237SnjlEnhanced blacklist with reason and severity fields. Any table's 1945114237Snjlsignature may now be used to identify a blacklisted system. 1946102550Siwasaki 1947114237SnjlCall _PIC control method to inform the firmware which interrupt 1948114237Snjlmodel the OS is using. Turn on any disabled link devices. 1949102550Siwasaki 1950102550SiwasakiCleaned up busmgr /proc error handling (Andreas Dilger) 1951102550Siwasaki 1952102550Siwasaki 2) ACPI CA Core Subsystem: 1953102550Siwasaki 1954104470SiwasakiImplemented ACPI 2.0 semantics for the "Break" operator (Exit 1955104470Siwasakifrom while loop) 1956102550Siwasaki 1957102550SiwasakiCompleted implementation of the ACPI 2.0 "Continue", 1958102550Siwasaki"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 1959104470Siwasakioperators. All new ACPI 2.0 operators are now implemented in 1960104470Siwasakiboth the ASL compiler and the AML interpreter. The only 1961104470Siwasakiremaining ACPI 2.0 task is support for the String data type in 1962104470Siwasakithe DerefOf operator. Fixed a problem with AcquireMutex where 1963114237Snjlthe status code was lost if the caller had to actually wait for 1964114237Snjlthe mutex. 1965102550Siwasaki 1966104470SiwasakiIncreased the maximum ASL Field size from 64K bits to 4G bits. 1967102550Siwasaki 1968114237SnjlCompleted implementation of the external Global Lock interfaces - 1969114237Snjl- AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout 1970114237Snjland Handler parameters were added. 1971102550Siwasaki 1972102550SiwasakiCompleted another pass at removing warnings and issues when 1973114237Snjlcompiling with 64-bit compilers. The code now compiles cleanly 1974114237Snjlwith the Intel 64-bit C/C++ compiler. Most notably, the pointer 1975114237Snjladd and subtract (diff) macros have changed considerably. 1976102550Siwasaki 1977114237SnjlCreated and deployed a new ACPI_SIZE type that is 64-bits wide on 1978114237Snjl64-bit platforms, 32-bits on all others. This type is used 1979104470Siwasakiwherever memory allocation and/or the C sizeof() operator is 1980104470Siwasakiused, and affects the OSL memory allocation interfaces 1981104470SiwasakiAcpiOsAllocate and AcpiOsCallocate. 1982102550Siwasaki 1983102550SiwasakiImplemented sticky user breakpoints in the AML debugger. 1984102550Siwasaki 1985102550SiwasakiCode and Data Size: Current core subsystem library sizes are 1986114237Snjlshown below. These are the code and data sizes for the acpica.lib 1987114237Snjlproduced by the Microsoft Visual C++ 6.0 compiler, and these 1988114237Snjlvalues do not include any ACPI driver or OSPM code. The debug 1989114237Snjlversion of the code includes the debug output trace mechanism and 1990114237Snjlhas a larger code and data size. Note that these values will vary 1991114237Snjldepending on the efficiency of the compiler and the compiler 1992114237Snjloptions used during generation. 1993102550Siwasaki 1994102550Siwasaki Previous Release (12_05_01) 1995114237Snjl Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 1996114237Snjl Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 1997102550Siwasaki Current Release: 1998114237Snjl Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 1999114237Snjl Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 2000102550Siwasaki 2001102550Siwasaki 3) ASL Compiler, version X2034: 2002102550Siwasaki 2003114237SnjlNow checks for (and generates an error if detected) the use of a 2004114237SnjlBreak or Continue statement without an enclosing While statement. 2005102550Siwasaki 2006102550SiwasakiSuccessfully generated the compiler with the Intel 64-bit C 2007102550Siwasakicompiler. 2008102550Siwasaki 2009102550Siwasaki ---------------------------------------- 2010102550SiwasakiSummary of changes for this label: 12_05_01 2011102550Siwasaki 2012102550Siwasaki 1) ACPI CA Core Subsystem: 2013102550Siwasaki 2014102550SiwasakiThe ACPI 2.0 CopyObject operator is fully implemented. This 2015104470Siwasakioperator creates a new copy of an object (and is also used to 2016104470Siwasakibypass the "implicit conversion" mechanism of the Store 2017102550Siwasakioperator.) 2018102550Siwasaki 2019102550SiwasakiThe ACPI 2.0 semantics for the SizeOf operator are fully 2020102550Siwasakiimplemented. The change is that performing a SizeOf on a 2021114237Snjlreference object causes an automatic dereference of the object to 2022114237Snjltha actual value before the size is evaluated. This behavior was 2023114237Snjlundefined in ACPI 1.0. 2024102550Siwasaki 2025114237SnjlThe ACPI 2.0 semantics for the Extended IRQ resource descriptor 2026114237Snjlhave been implemented. The interrupt polarity and mode are now 2027114237Snjlindependently set. 2028102550Siwasaki 2029114237SnjlFixed a problem where ASL Constants (Zero, One, Ones, Revision) 2030114237Snjlappearing in Package objects were not properly converted to 2031114237Snjlintegers when the internal Package was converted to an external 2032114237Snjlobject (via the AcpiEvaluateObject interface.) 2033102550Siwasaki 2034114237SnjlFixed a problem with the namespace object deletion mechanism for 2035114237Snjlobjects created by control methods. There were two parts to this 2036114237Snjlproblem: 1) Objects created during the initialization phase 2037114237Snjlmethod parse were not being deleted, and 2) The object owner ID 2038114237Snjlmechanism to track objects was broken. 2039102550Siwasaki 2040114237SnjlFixed a problem where the use of the ASL Scope operator within a 2041114237Snjlcontrol method would result in an invalid opcode exception. 2042102550Siwasaki 2043114237SnjlFixed a problem introduced in the previous label where the buffer 2044114237Snjllength required for the _PRT structure was not being returned 2045114237Snjlcorrectly. 2046102550Siwasaki 2047102550SiwasakiCode and Data Size: Current core subsystem library sizes are 2048114237Snjlshown below. These are the code and data sizes for the acpica.lib 2049114237Snjlproduced by the Microsoft Visual C++ 6.0 compiler, and these 2050114237Snjlvalues do not include any ACPI driver or OSPM code. The debug 2051114237Snjlversion of the code includes the debug output trace mechanism and 2052114237Snjlhas a larger code and data size. Note that these values will 2053114237Snjlvary depending on the efficiency of the compiler and the compiler 2054114237Snjloptions used during generation. 2055102550Siwasaki 2056102550Siwasaki Previous Release (11_20_01) 2057114237Snjl Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 2058114237Snjl Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 2059102550Siwasaki 2060102550Siwasaki Current Release: 2061114237Snjl Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 2062114237Snjl Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 2063102550Siwasaki 2064102550Siwasaki 2) Linux: 2065102550Siwasaki 2066102550SiwasakiUpdated all files to apply cleanly against 2.4.16. 2067102550Siwasaki 2068104470SiwasakiAdded basic PCI Interrupt Routing Table (PRT) support for IA32 2069114237Snjl(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 2070114237Snjlversion supports both static and dyanmic PRT entries, but dynamic 2071114237Snjlentries are treated as if they were static (not yet 2072114237Snjlreconfigurable). Architecture- specific code to use this data is 2073114237Snjlabsent on IA32 but should be available shortly. 2074102550Siwasaki 2075114237SnjlChanged the initialization sequence to start the ACPI interpreter 2076114237Snjl(acpi_init) prior to initialization of the PCI driver (pci_init) 2077114237Snjlin init/main.c. This ordering is required to support PRT and 2078114237Snjlfacilitate other (future) enhancement. A side effect is that the 2079114237SnjlACPI bus driver and certain device drivers can no longer be 2080114237Snjlloaded as modules. 2081102550Siwasaki 2082104470SiwasakiModified the 'make menuconfig' options to allow PCI Interrupt 2083104470SiwasakiRouting support to be included without the ACPI Bus and other 2084104470Siwasakidevice drivers. 2085102550Siwasaki 2086102550Siwasaki 3) ASL Compiler, version X2033: 2087102550Siwasaki 2088102550SiwasakiFixed some issues with the use of the new CopyObject and 2089102550SiwasakiDataTableRegion operators. Both are fully functional. 2090102550Siwasaki 2091102550Siwasaki ---------------------------------------- 2092102550SiwasakiSummary of changes for this label: 11_20_01 2093102550Siwasaki 2094102550Siwasaki 20 November 2001. Summary of changes for this release. 2095102550Siwasaki 2096102550Siwasaki 1) ACPI CA Core Subsystem: 2097102550Siwasaki 2098104470SiwasakiUpdated Index support to match ACPI 2.0 semantics. Storing a 2099104470SiwasakiInteger, String, or Buffer to an Index of a Buffer will store 2100104470Siwasakionly the least-significant byte of the source to the Indexed 2101104470Siwasakibuffer byte. Multiple writes are not performed. 2102102550Siwasaki 2103104470SiwasakiFixed a problem where the access type used in an AccessAs ASL 2104104470Siwasakioperator was not recorded correctly into the field object. 2105102550Siwasaki 2106102550SiwasakiFixed a problem where ASL Event objects were created in a 2107114237Snjlsignalled state. Events are now created in an unsignalled state. 2108102550Siwasaki 2109114237SnjlThe internal object cache is now purged after table loading and 2110114237Snjlinitialization to reduce the use of dynamic kernel memory -- on 2111114237Snjlthe assumption that object use is greatest during the parse phase 2112114237Snjlof the entire table (versus the run-time use of individual 2113114237Snjlcontrol methods.) 2114102550Siwasaki 2115102550SiwasakiACPI 2.0 variable-length packages are now fully operational. 2116102550Siwasaki 2117104470SiwasakiCode and Data Size: Code and Data optimizations have permitted 2118114237Snjlnew feature development with an actual reduction in the library 2119114237Snjlsize. Current core subsystem library sizes are shown below. 2120114237SnjlThese are the code and data sizes for the acpica.lib produced by 2121114237Snjlthe Microsoft Visual C++ 6.0 compiler, and these values do not 2122114237Snjlinclude any ACPI driver or OSPM code. The debug version of the 2123114237Snjlcode includes the debug output trace mechanism and has a larger 2124114237Snjlcode and data size. Note that these values will vary depending 2125114237Snjlon the efficiency of the compiler and the compiler options used 2126114237Snjlduring generation. 2127102550Siwasaki 2128102550Siwasaki Previous Release (11_09_01): 2129114237Snjl Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 2130114237Snjl Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 2131102550Siwasaki 2132102550Siwasaki Current Release: 2133114237Snjl Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 2134114237Snjl Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 2135102550Siwasaki 2136102550Siwasaki 2) Linux: 2137102550Siwasaki 2138114237SnjlEnhanced the ACPI boot-time initialization code to allow the use 2139114237Snjlof Local APIC tables for processor enumeration on IA-32, and to 2140114237Snjlpave the way for a fully MPS-free boot (on SMP systems) in the 2141114237Snjlnear future. This functionality replaces 2142114237Snjlarch/i386/kernel/acpitables.c, which was introduced in an earlier 2143114237Snjl2.4.15-preX release. To enable this feature you must add 2144114237Snjl"acpi_boot=on" to the kernel command line -- see the help entry 2145114237Snjlfor CONFIG_ACPI_BOOT for more information. An IA-64 release is 2146114237Snjlin the works... 2147102550Siwasaki 2148114237SnjlRestructured the configuration options to allow boot-time table 2149114237Snjlparsing support without inclusion of the ACPI Interpreter (and 2150114237Snjlother) code. 2151102550Siwasaki 2152102550SiwasakiNOTE: This release does not include fixes for the reported 2153104470Siwasakievents, power-down, and thermal passive cooling issues (coming 2154104470Siwasakisoon). 2155102550Siwasaki 2156102550Siwasaki 3) ASL Compiler: 2157102550Siwasaki 2158114237SnjlAdded additional typechecking for Fields within restricted access 2159114237SnjlOperation Regions. All fields within EC and CMOS regions must be 2160114237Snjldeclared with ByteAcc. All fields withing SMBus regions must be 2161114237Snjldeclared with the BufferAcc access type. 2162102550Siwasaki 2163114237SnjlFixed a problem where the listing file output of control methods 2164114237Snjlno longer interleaved the actual AML code with the ASL source 2165114237Snjlcode. 2166102550Siwasaki 2167102550Siwasaki 2168102550Siwasaki 2169102550Siwasaki---------------------------------------- 2170102550SiwasakiSummary of changes for this label: 11_09_01 2171102550Siwasaki 2172102550Siwasaki1) ACPI CA Core Subsystem: 2173102550Siwasaki 2174114237SnjlImplemented ACPI 2.0-defined support for writes to fields with a 2175114237SnjlBuffer, String, or Integer source operand that is smaller than 2176114237Snjlthe target field. In these cases, the source operand is zero- 2177114237Snjlextended to fill the target field. 2178102550Siwasaki 2179104470SiwasakiFixed a problem where a Field starting bit offset (within the 2180104470Siwasakiparent operation region) was calculated incorrectly if the 2181104470Siwasakialignment of the field differed from the access width. This 2182114237Snjlaffected CreateWordField, CreateDwordField, CreateQwordField, and 2183114237Snjlpossibly other fields that use the "AccessAny" keyword. 2184102550Siwasaki 2185114237SnjlFixed a problem introduced in the 11_02_01 release where indirect 2186114237Snjlstores through method arguments did not operate correctly. 2187102550Siwasaki 2188102550Siwasaki2) Linux: 2189102550Siwasaki 2190102550SiwasakiImplemented boot-time ACPI table parsing support 2191114237Snjl(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 2192114237Snjlfacilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 2193114237Snjllegacy BIOS interfaces (e.g. MPS) for the configuration of system 2194114237Snjlprocessors, memory, and interrupts during setup_arch(). Note 2195114237Snjlthat this patch does not include the required architecture- 2196114237Snjlspecific changes required to apply this information -- subsequent 2197114237Snjlpatches will be posted for both IA32 and IA64 to achieve this. 2198102550Siwasaki 2199114237SnjlAdded low-level sleep support for IA32 platforms, courtesy of Pat 2200114237SnjlMochel. This allows IA32 systems to transition to/from various 2201114237Snjlsleeping states (e.g. S1, S3), although the lack of a centralized 2202114237Snjldriver model and power-manageable drivers will prevent its 2203114237Snjl(successful) use on most systems. 2204102550Siwasaki 2205114237SnjlRevamped the ACPI 'menuconfig' layout: created new "ACPI Support" 2206114237Snjlsubmenu, unified IA32 and IA64 options, added new "Boot using 2207114237SnjlACPI tables" option, etc. 2208102550Siwasaki 2209114237SnjlIncreased the default timeout for the EC driver from 1ms to 10ms 2210114237Snjl(1000 cycles of 10us) to try to address AE_TIME errors during EC 2211114237Snjltransactions. 2212102550Siwasaki 2213102550Siwasaki ---------------------------------------- 2214102550SiwasakiSummary of changes for this label: 11_02_01 2215102550Siwasaki 2216102550Siwasaki1) ACPI CA Core Subsystem: 2217102550Siwasaki 2218102550SiwasakiACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 2219102550Siwasaki(QWordAcc keyword). All ACPI 2.0 64-bit support is now 2220102550Siwasakiimplemented. 2221102550Siwasaki 2222114237SnjlOSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 2223114237Snjlchanges to support ACPI 2.0 Qword field access. Read/Write 2224114237SnjlPciConfiguration(), Read/Write Memory(), and Read/Write Port() 2225114237Snjlnow accept an ACPI_INTEGER (64 bits) as the value parameter. 2226114237SnjlAlso, the value parameter for the address space handler interface 2227114237Snjlis now an ACPI_INTEGER. OSL implementations of these interfaces 2228114237Snjlmust now handle the case where the Width parameter is 64. 2229102550Siwasaki 2230104470SiwasakiIndex Fields: Fixed a problem where unaligned bit assembly and 2231104470Siwasakidisassembly for IndexFields was not supported correctly. 2232102550Siwasaki 2233102550SiwasakiIndex and Bank Fields: Nested Index and Bank Fields are now 2234104470Siwasakisupported. During field access, a check is performed to ensure 2235114237Snjlthat the value written to an Index or Bank register is not out of 2236114237Snjlthe range of the register. The Index (or Bank) register is 2237114237Snjlwritten before each access to the field data. Future support will 2238114237Snjlinclude allowing individual IndexFields to be wider than the 2239114237SnjlDataRegister width. 2240102550Siwasaki 2241114237SnjlFields: Fixed a problem where the AML interpreter was incorrectly 2242114237Snjlattempting to write beyond the end of a Field/OpRegion. This was 2243114237Snjla boundary case that occurred when a DWORD field was written to a 2244114237SnjlBYTE access OpRegion, forcing multiple writes and causing the 2245114237Snjlinterpreter to write one datum too many. 2246102550Siwasaki 2247102550SiwasakiFields: Fixed a problem with Field/OpRegion access where the 2248114237Snjlstarting bit address of a field was incorrectly calculated if the 2249114237Snjlcurrent access type was wider than a byte (WordAcc, DwordAcc, or 2250114237SnjlQwordAcc). 2251102550Siwasaki 2252104470SiwasakiFields: Fixed a problem where forward references to individual 2253104470SiwasakiFieldUnits (individual Field names within a Field definition) 2254102550Siwasakiwere not resolved during the AML table load. 2255102550Siwasaki 2256104470SiwasakiFields: Fixed a problem where forward references from a Field 2257104470Siwasakidefinition to the parent Operation Region definition were not 2258104470Siwasakiresolved during the AML table load. 2259104470Siwasaki 2260114237SnjlFields: Duplicate FieldUnit names within a scope are now detected 2261114237Snjlduring AML table load. 2262102550Siwasaki 2263102550SiwasakiAcpi Interfaces: Fixed a problem where the AcpiGetName() 2264102550Siwasakiinterface returned an incorrect name for the root node. 2265102550Siwasaki 2266104470SiwasakiCode and Data Size: Code and Data optimizations have permitted 2267114237Snjlnew feature development with an actual reduction in the library 2268114237Snjlsize. Current core subsystem library sizes are shown below. 2269114237SnjlThese are the code and data sizes for the acpica.lib produced by 2270114237Snjlthe Microsoft Visual C++ 6.0 compiler, and these values do not 2271114237Snjlinclude any ACPI driver or OSPM code. The debug version of the 2272114237Snjlcode includes the debug output trace mechanism and has a larger 2273114237Snjlcode and data size. Note that these values will vary depending 2274114237Snjlon the efficiency of the compiler and the compiler options used 2275114237Snjlduring generation. 2276102550Siwasaki 2277102550Siwasaki Previous Release (10_18_01): 2278114237Snjl Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 2279114237Snjl Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 2280102550Siwasaki 2281102550Siwasaki Current Release: 2282114237Snjl Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 2283114237Snjl Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 2284102550Siwasaki 2285102550Siwasaki 2) Linux: 2286102550Siwasaki 2287102550SiwasakiImproved /proc processor output (Pavel Machek) Re-added 2288102550SiwasakiMODULE_LICENSE("GPL") to all modules. 2289102550Siwasaki 2290102550Siwasaki 3) ASL Compiler version X2030: 2291102550Siwasaki 2292104470SiwasakiDuplicate FieldUnit names within a scope are now detected and 2293104470Siwasakiflagged as errors. 2294102550Siwasaki 2295102550Siwasaki 4) Documentation: 2296102550Siwasaki 2297104470SiwasakiProgrammer Reference updated to reflect OSL and address space 2298104470Siwasakihandler interface changes described above. 2299102550Siwasaki 2300102550Siwasaki---------------------------------------- 2301102550SiwasakiSummary of changes for this label: 10_18_01 2302102550Siwasaki 2303102550SiwasakiACPI CA Core Subsystem: 2304102550Siwasaki 2305102550SiwasakiFixed a problem with the internal object reference count 2306104470Siwasakimechanism that occasionally caused premature object deletion. 2307104470SiwasakiThis resolves all of the outstanding problem reports where an 2308104470Siwasakiobject is deleted in the middle of an interpreter evaluation. 2309114237SnjlAlthough this problem only showed up in rather obscure cases, the 2310114237Snjlsolution to the problem involved an adjustment of all reference 2311114237Snjlcounts involving objects attached to namespace nodes. 2312102550Siwasaki 2313102550SiwasakiFixed a problem with Field support in the interpreter where 2314114237Snjlwriting to an aligned field whose length is an exact multiple (2 2315114237Snjlor greater) of the field access granularity would cause an 2316104470Siwasakiattempt to write beyond the end of the field. 2317102550Siwasaki 2318102550SiwasakiThe top level AML opcode execution functions within the 2319102550Siwasakiinterpreter have been renamed with a more meaningful and 2320102550Siwasakiconsistent naming convention. The modules exmonad.c and 2321102550Siwasakiexdyadic.c were eliminated. New modules are exoparg1.c, 2322102550Siwasakiexoparg2.c, exoparg3.c, and exoparg6.c. 2323102550Siwasaki 2324114237SnjlSupport for the ACPI 2.0 "Mid" ASL operator has been implemented. 2325102550Siwasaki 2326114237SnjlFixed a problem where the AML debugger was causing some internal 2327114237Snjlobjects to not be deleted during subsystem termination. 2328102550Siwasaki 2329104470SiwasakiFixed a problem with the external AcpiEvaluateObject interface 2330104470Siwasakiwhere the subsystem would fault if the named object to be 2331104470Siwasakievaluated refered to a constant such as Zero, Ones, etc. 2332102550Siwasaki 2333102550SiwasakiFixed a problem with IndexFields and BankFields where the 2334114237Snjlsubsystem would fault if the index, data, or bank registers were 2335114237Snjlnot defined in the same scope as the field itself. 2336102550Siwasaki 2337104470SiwasakiAdded printf format string checking for compilers that support 2338104470Siwasakithis feature. Corrected more than 50 instances of issues with 2339104470Siwasakiformat specifiers within invocations of ACPI_DEBUG_PRINT 2340104470Siwasakithroughout the core subsystem code. 2341102550Siwasaki 2342104470SiwasakiThe ASL "Revision" operator now returns the ACPI support level 2343104470Siwasakiimplemented in the core - the value "2" since the ACPI 2.0 2344104470Siwasakisupport is more than 50% implemented. 2345102550Siwasaki 2346114237SnjlEnhanced the output of the AML debugger "dump namespace" command 2347114237Snjlto output in a more human-readable form. 2348102550Siwasaki 2349114237SnjlCurrent core subsystem library code sizes are shown below. These 2350114237Snjlare the code and data sizes for the acpica.lib produced by the 2351114237SnjlMicrosoft Visual C++ 6.0 compiler, and these values do not 2352114237Snjlinclude any ACPI driver or OSPM code. The debug version of the 2353114237Snjlcode includes the full debug trace mechanism -- leading to a much 2354114237Snjllarger code and data size. Note that these values will vary 2355114237Snjldepending on the efficiency of the compiler and the compiler 2356114237Snjloptions used during generation. 2357102550Siwasaki 2358102550Siwasaki Previous Label (09_20_01): 2359114237Snjl Non-Debug Version: 65K Code, 5K Data, 70K Total 2360114237Snjl Debug Version: 138K Code, 58K Data, 196K Total 2361102550Siwasaki 2362102550Siwasaki This Label: 2363102550Siwasaki 2364114237Snjl Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 2365114237Snjl Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 2366114237Snjl 2367102550SiwasakiLinux: 2368102550Siwasaki 2369104470SiwasakiImplemented a "Bad BIOS Blacklist" to track machines that have 2370104470Siwasakiknown ASL/AML problems. 2371102550Siwasaki 2372102550SiwasakiEnhanced the /proc interface for the thermal zone driver and 2373104470Siwasakiadded support for _HOT (the critical suspend trip point). The 2374114237Snjl'info' file now includes threshold/policy information, and allows 2375114237Snjlsetting of _SCP (cooling preference) and _TZP (polling frequency) 2376114237Snjlvalues to the 'info' file. Examples: "echo tzp=5 > info" sets the 2377114237Snjlpolling frequency to 5 seconds, and "echo scp=1 > info" sets the 2378114237Snjlcooling preference to the passive/quiet mode (if supported by the 2379114237SnjlASL). 2380102550Siwasaki 2381104470SiwasakiImplemented a workaround for a gcc bug that resuted in an OOPs 2382104470Siwasakiwhen loading the control method battery driver. 2383102550Siwasaki 2384102550Siwasaki ---------------------------------------- 2385102550SiwasakiSummary of changes for this label: 09_20_01 2386102550Siwasaki 2387102550Siwasaki ACPI CA Core Subsystem: 2388102550Siwasaki 2389104470SiwasakiThe AcpiEnableEvent and AcpiDisableEvent interfaces have been 2390104470Siwasakimodified to allow individual GPE levels to be flagged as wake- 2391114237Snjlenabled (i.e., these GPEs are to remain enabled when the platform 2392114237Snjlsleeps.) 2393102550Siwasaki 2394104470SiwasakiThe AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 2395104470Siwasakisupport wake-enabled GPEs. This means that upon entering the 2396104470Siwasakisleep state, all GPEs that are not wake-enabled are disabled. 2397104470SiwasakiWhen leaving the sleep state, these GPEs are reenabled. 2398102550Siwasaki 2399114237SnjlA local double-precision divide/modulo module has been added to 2400114237Snjlenhance portability to OS kernels where a 64-bit math library is 2401114237Snjlnot available. The new module is "utmath.c". 2402102550Siwasaki 2403104470SiwasakiSeveral optimizations have been made to reduce the use of CPU 2404114237Snjlstack. Originally over 2K, the maximum stack usage is now below 2405114237Snjl2K at 1860 bytes (1.82k) 2406102550Siwasaki 2407114237SnjlFixed a problem with the AcpiGetFirmwareTable interface where the 2408114237Snjlroot table pointer was not mapped into a logical address 2409104470Siwasakiproperly. 2410102550Siwasaki 2411104470SiwasakiFixed a problem where a NULL pointer was being dereferenced in 2412104470Siwasakithe interpreter code for the ASL Notify operator. 2413102550Siwasaki 2414102550SiwasakiFixed a problem where the use of the ASL Revision operator 2415114237Snjlreturned an error. This operator now returns the current version 2416114237Snjlof the ACPI CA core subsystem. 2417102550Siwasaki 2418114237SnjlFixed a problem where objects passed as control method parameters 2419114237Snjlto AcpiEvaluateObject were always deleted at method termination. 2420114237SnjlHowever, these objects may end up being stored into the namespace 2421114237Snjlby the called method. The object reference count mechanism was 2422114237Snjlapplied to these objects instead of a force delete. 2423102550Siwasaki 2424114237SnjlFixed a problem where static strings or buffers (contained in the 2425114237SnjlAML code) that are declared as package elements within the ASL 2426114237Snjlcode could cause a fault because the interpreter would attempt to 2427114237Snjldelete them. These objects are now marked with the "static 2428114237Snjlobject" flag to prevent any attempt to delete them. 2429102550Siwasaki 2430114237SnjlImplemented an interpreter optimization to use operands directly 2431114237Snjlfrom the state object instead of extracting the operands to local 2432114237Snjlvariables. This reduces stack use and code size, and improves 2433114237Snjlperformance. 2434102550Siwasaki 2435102550SiwasakiThe module exxface.c was eliminated as it was an unnecessary 2436102550Siwasakiextra layer of code. 2437102550Siwasaki 2438114237SnjlCurrent core subsystem library code sizes are shown below. These 2439114237Snjlare the code and data sizes for the acpica.lib produced by the 2440114237SnjlMicrosoft Visual C++ 6.0 compiler, and these values do not 2441114237Snjlinclude any ACPI driver or OSPM code. The debug version of the 2442114237Snjlcode includes the full debug trace mechanism -- leading to a much 2443114237Snjllarger code and data size. Note that these values will vary 2444114237Snjldepending on the efficiency of the compiler and the compiler 2445114237Snjloptions used during generation. 2446102550Siwasaki 2447102550Siwasaki Non-Debug Version: 65K Code, 5K Data, 70K Total 2448114237Snjl(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 2449114237SnjlTotal (Previously 195K) 2450102550Siwasaki 2451102550SiwasakiLinux: 2452102550Siwasaki 2453114237SnjlSupport for ACPI 2.0 64-bit integers has been added. All ACPI 2454114237SnjlInteger objects are now 64 bits wide 2455102550Siwasaki 2456114237SnjlAll Acpi data types and structures are now in lower case. Only 2457114237SnjlAcpi macros are upper case for differentiation. 2458102550Siwasaki 2459102550Siwasaki Documentation: 2460102550Siwasaki 2461102550SiwasakiChanges to the external interfaces as described above. 2462102550Siwasaki 2463102550Siwasaki ---------------------------------------- 2464102550SiwasakiSummary of changes for this label: 08_31_01 2465102550Siwasaki 2466102550Siwasaki ACPI CA Core Subsystem: 2467102550Siwasaki 2468114237SnjlA bug with interpreter implementation of the ASL Divide operator 2469114237Snjlwas found and fixed. The implicit function return value (not the 2470114237Snjlexplicit store operands) was returning the remainder instead of 2471114237Snjlthe quotient. This was a longstanding bug and it fixes several 2472114237Snjlknown outstanding issues on various platforms. 2473102550Siwasaki 2474104470SiwasakiThe ACPI_DEBUG_PRINT and function trace entry/exit macros have 2475104470Siwasakibeen further optimized for size. There are 700 invocations of 2476104470Siwasakithe DEBUG_PRINT macro alone, so each optimization reduces the 2477104470Siwasakisize of the debug version of the subsystem significantly. 2478102550Siwasaki 2479114237SnjlA stack trace mechanism has been implemented. The maximum stack 2480114237Snjlusage is about 2K on 32-bit platforms. The debugger command 2481114237Snjl"stat stack" will display the current maximum stack usage. 2482102550Siwasaki 2483114237SnjlAll public symbols and global variables within the subsystem are 2484114237Snjlnow prefixed with the string "Acpi". This keeps all of the 2485114237Snjlsymbols grouped together in a kernel map, and avoids conflicts 2486114237Snjlwith other kernel subsystems. 2487102550Siwasaki 2488114237SnjlMost of the internal fixed lookup tables have been moved into the 2489114237Snjlcode segment via the const operator. 2490102550Siwasaki 2491104470SiwasakiSeveral enhancements have been made to the interpreter to both 2492104470Siwasakireduce the code size and improve performance. 2493102550Siwasaki 2494114237SnjlCurrent core subsystem library code sizes are shown below. These 2495114237Snjlare the code and data sizes for the acpica.lib produced by the 2496114237SnjlMicrosoft Visual C++ 6.0 compiler, and these values do not 2497114237Snjlinclude any ACPI driver or OSPM code. The debug version of the 2498114237Snjlcode includes the full debug trace mechanism which contains over 2499114237Snjl700 invocations of the DEBUG_PRINT macro, 500 function entry 2500114237Snjlmacro invocations, and over 900 function exit macro invocations - 2501114237Snjl- leading to a much larger code and data size. Note that these 2502114237Snjlvalues will vary depending on the efficiency of the compiler and 2503114237Snjlthe compiler options used during generation. 2504102550Siwasaki 2505102550Siwasaki Non-Debug Version: 64K Code, 5K Data, 69K Total 2506102550SiwasakiDebug Version: 137K Code, 58K Data, 195K Total 2507102550Siwasaki 2508102550Siwasaki Linux: 2509102550Siwasaki 2510104470SiwasakiImplemented wbinvd() macro, pending a kernel-wide definition. 2511102550Siwasaki 2512102550SiwasakiFixed /proc/acpi/event to handle poll() and short reads. 2513102550Siwasaki 2514102550Siwasaki ASL Compiler, version X2026: 2515102550Siwasaki 2516104470SiwasakiFixed a problem introduced in the previous label where the AML 2517104470Siwasakicode emitted for package objects produced packages with zero 2518104470Siwasakilength. 2519102550Siwasaki 2520102550Siwasaki ---------------------------------------- 2521102550SiwasakiSummary of changes for this label: 08_16_01 2522102550Siwasaki 2523102550SiwasakiACPI CA Core Subsystem: 2524102550Siwasaki 2525114237SnjlThe following ACPI 2.0 ASL operators have been implemented in the 2526114237SnjlAML interpreter (These are already supported by the Intel ASL 2527114237Snjlcompiler): ToDecimalString, ToHexString, ToString, ToInteger, 2528114237Snjland ToBuffer. Support for 64-bit AML constants is implemented in 2529114237Snjlthe AML parser, debugger, and disassembler. 2530102550Siwasaki 2531114237SnjlThe internal memory tracking mechanism (leak detection code) has 2532114237Snjlbeen upgraded to reduce the memory overhead (a separate tracking 2533114237Snjlblock is no longer allocated for each memory allocation), and now 2534114237Snjlsupports all of the internal object caches. 2535102550Siwasaki 2536114237SnjlThe data structures and code for the internal object caches have 2537114237Snjlbeen coelesced and optimized so that there is a single cache and 2538114237Snjlmemory list data structure and a single group of functions that 2539114237Snjlimplement generic cache management. This has reduced the code 2540114237Snjlsize in both the debug and release versions of the subsystem. 2541102550Siwasaki 2542102550SiwasakiThe DEBUG_PRINT macro(s) have been optimized for size and 2543102550Siwasakireplaced by ACPI_DEBUG_PRINT. The syntax for this macro is 2544102550Siwasakislightly different, because it generates a single call to an 2545114237Snjlinternal function. This results in a savings of about 90 bytes 2546114237Snjlper invocation, resulting in an overall code and data savings of 2547114237Snjlabout 16% in the debug version of the subsystem. 2548102550Siwasaki 2549102550Siwasaki Linux: 2550102550Siwasaki 2551114237SnjlFixed C3 disk corruption problems and re-enabled C3 on supporting 2552114237Snjlmachines. 2553102550Siwasaki 2554102550SiwasakiIntegrated low-level sleep code by Patrick Mochel. 2555102550Siwasaki 2556102550SiwasakiFurther tweaked source code Linuxization. 2557102550Siwasaki 2558102550SiwasakiOther minor fixes. 2559102550Siwasaki 2560102550Siwasaki ASL Compiler: 2561102550Siwasaki 2562114237SnjlSupport for ACPI 2.0 variable length packages is fixed/completed. 2563102550Siwasaki 2564114237SnjlFixed a problem where the optional length parameter for the ACPI 2565114237Snjl2.0 ToString operator. 2566102550Siwasaki 2567114237SnjlFixed multiple extraneous error messages when a syntax error is 2568114237Snjldetected within the declaration line of a control method. 2569102550Siwasaki 2570102550Siwasaki ---------------------------------------- 2571102550SiwasakiSummary of changes for this label: 07_17_01 2572102550Siwasaki 2573102550SiwasakiACPI CA Core Subsystem: 2574102550Siwasaki 2575104470SiwasakiAdded a new interface named AcpiGetFirmwareTable to obtain any 2576114237SnjlACPI table via the ACPI signature. The interface can be called 2577114237Snjlat any time during kernel initialization, even before the kernel 2578114237Snjlvirtual memory manager is initialized and paging is enabled. 2579114237SnjlThis allows kernel subsystems to obtain ACPI tables very early, 2580114237Snjleven before the ACPI CA subsystem is initialized. 2581102550Siwasaki 2582104470SiwasakiFixed a problem where Fields defined with the AnyAcc attribute 2583104470Siwasakicould be resolved to the incorrect address under the following 2584114237Snjlconditions: 1) the field width is larger than 8 bits and 2) the 2585114237Snjlparent operation region is not defined on a DWORD boundary. 2586102550Siwasaki 2587114237SnjlFixed a problem where the interpreter is not being locked during 2588114237Snjlnamespace initialization (during execution of the _INI control 2589114237Snjlmethods), causing an error when an attempt is made to release it 2590114237Snjllater. 2591102550Siwasaki 2592104470SiwasakiACPI 2.0 support in the AML Interpreter has begun and will be 2593114237Snjlongoing throughout the rest of this year. In this label, The Mod 2594114237Snjloperator is implemented. 2595102550Siwasaki 2596102550SiwasakiAdded a new data type to contain full PCI addresses named 2597102550SiwasakiACPI_PCI_ID. This structure contains the PCI Segment, Bus, 2598102550SiwasakiDevice, and Function values. 2599102550Siwasaki 2600102550Siwasaki Linux: 2601102550Siwasaki 2602102550SiwasakiEnhanced the Linux version of the source code to change most 2603102550Siwasakicapitalized ACPI type names to lowercase. For example, all 2604114237Snjlinstances of ACPI_STATUS are changed to acpi_status. This will 2605114237Snjlresult in a large diff, but the change is strictly cosmetic and 2606114237Snjlaligns the CA code closer to the Linux coding standard. 2607102550Siwasaki 2608102550SiwasakiOSL Interfaces: 2609102550Siwasaki 2610114237SnjlThe interfaces to the PCI configuration space have been changed 2611114237Snjlto add the PCI Segment number and to split the single 32-bit 2612114237Snjlcombined DeviceFunction field into two 16-bit fields. This was 2613114237Snjlaccomplished by moving the four values that define an address in 2614114237SnjlPCI configuration space (segment, bus, device, and function) to 2615114237Snjlthe new ACPI_PCI_ID structure. 2616102550Siwasaki 2617104470SiwasakiThe changes to the PCI configuration space interfaces led to a 2618104470Siwasakireexamination of the complete set of address space access 2619114237Snjlinterfaces for PCI, I/O, and Memory. The previously existing 18 2620114237Snjlinterfaces have proven difficult to maintain (any small change 2621114237Snjlmust be propagated across at least 6 interfaces) and do not 2622114237Snjleasily allow for future expansion to 64 bits if necessary. Also, 2623114237Snjlon some systems, it would not be appropriate to demultiplex the 2624114237Snjlaccess width (8, 16, 32,or 64) before calling the OSL if the 2625114237Snjlcorresponding native OS interfaces contain a similar access width 2626114237Snjlparameter. For these reasons, the 18 address space interfaces 2627114237Snjlhave been replaced by these 6 new ones: 2628102550Siwasaki 2629102550SiwasakiAcpiOsReadPciConfiguration 2630102550SiwasakiAcpiOsWritePciConfiguration 2631102550SiwasakiAcpiOsReadMemory 2632102550SiwasakiAcpiOsWriteMemory 2633102550SiwasakiAcpiOsReadPort 2634102550SiwasakiAcpiOsWritePort 2635102550Siwasaki 2636114237SnjlAdded a new interface named AcpiOsGetRootPointer to allow the OSL 2637114237Snjlto perform the platform and/or OS-specific actions necessary to 2638114237Snjlobtain the ACPI RSDP table pointer. On IA-32 platforms, this 2639114237Snjlinterface will simply call down to the CA core to perform the low- 2640114237Snjlmemory search for the table. On IA-64, the RSDP is obtained from 2641114237SnjlEFI. Migrating this interface to the OSL allows the CA core to 2642114237Snjlremain OS and platform independent. 2643102550Siwasaki 2644104470SiwasakiAdded a new interface named AcpiOsSignal to provide a generic 2645114237Snjl"function code and pointer" interface for various miscellaneous 2646114237Snjlsignals and notifications that must be made to the host OS. The 2647114237Snjlfirst such signals are intended to support the ASL Fatal and 2648114237SnjlBreakpoint operators. In the latter case, the AcpiOsBreakpoint 2649114237Snjlinterface has been obsoleted. 2650102550Siwasaki 2651102550SiwasakiThe definition of the AcpiFormatException interface has been 2652114237Snjlchanged to simplify its use. The caller no longer must supply a 2653114237Snjlbuffer to the call; A pointer to a const string is now returned 2654114237Snjldirectly. This allows the call to be easily used in printf 2655114237Snjlstatements, etc. since the caller does not have to manage a local 2656114237Snjlbuffer. 2657102550Siwasaki 2658114237Snjl 2659102550Siwasaki ASL Compiler, Version X2025: 2660102550Siwasaki 2661114237SnjlThe ACPI 2.0 Switch/Case/Default operators have been implemented 2662114237Snjland are fully functional. They will work with all ACPI 1.0 2663114237Snjlinterpreters, since the operators are simply translated to 2664114237SnjlIf/Else pairs. 2665102550Siwasaki 2666104470SiwasakiThe ACPI 2.0 ElseIf operator is implemented and will also work 2667104470Siwasakiwith 1.0 interpreters, for the same reason. 2668102550Siwasaki 2669114237SnjlImplemented support for ACPI 2.0 variable-length packages. These 2670114237Snjlpackages have a separate opcode, and their size is determined by 2671114237Snjlthe interpreter at run-time. 2672102550Siwasaki 2673114237SnjlDocumentation The ACPI CA Programmer Reference has been updated 2674114237Snjlto reflect the new interfaces and changes to existing interfaces. 2675102550Siwasaki 2676102550Siwasaki ------------------------------------------ 2677102550SiwasakiSummary of changes for this label: 06_15_01 2678102550Siwasaki 2679102550Siwasaki ACPI CA Core Subsystem: 2680102550Siwasaki 2681102550SiwasakiFixed a problem where a DWORD-accessed field within a Buffer 2682114237Snjlobject would get its byte address inadvertently rounded down to 2683114237Snjlthe nearest DWORD. Buffers are always Byte-accessible. 2684102550Siwasaki 2685102550Siwasaki ASL Compiler, version X2024: 2686102550Siwasaki 2687114237SnjlFixed a problem where the Switch() operator would either fault or 2688114237Snjlhang the compiler. Note however, that the AML code for this ACPI 2689114237Snjl2.0 operator is not yet implemented. 2690102550Siwasaki 2691114237SnjlCompiler uses the new AcpiOsGetTimer interface to obtain compile 2692114237Snjltimings. 2693102550Siwasaki 2694114237SnjlImplementation of the CreateField operator automatically converts 2695114237Snjla reference to a named field within a resource descriptor from a 2696114237Snjlbyte offset to a bit offset if required. 2697102550Siwasaki 2698102550SiwasakiAdded some missing named fields from the resource descriptor 2699104470Siwasakisupport. These are the names that are automatically created by 2700114237Snjlthe compiler to reference fields within a descriptor. They are 2701114237Snjlonly valid at compile time and are not passed through to the AML 2702114237Snjlinterpreter. 2703102550Siwasaki 2704104470SiwasakiResource descriptor named fields are now typed as Integers and 2705104470Siwasakisubject to compile-time typechecking when used in expressions. 2706102550Siwasaki 2707102550Siwasaki ------------------------------------------ 2708102550SiwasakiSummary of changes for this label: 05_18_01 2709102550Siwasaki 2710102550Siwasaki ACPI CA Core Subsystem: 2711102550Siwasaki 2712114237SnjlFixed a couple of problems in the Field support code where bits 2713114237Snjlfrom adjacent fields could be returned along with the proper 2714114237Snjlfield bits. Restructured the field support code to improve 2715114237Snjlperformance, readability and maintainability. 2716102550Siwasaki 2717114237SnjlNew DEBUG_PRINTP macro automatically inserts the procedure name 2718114237Snjlinto the output, saving hundreds of copies of procedure name 2719114237Snjlstrings within the source, shrinking the memory footprint of the 2720114237Snjldebug version of the core subsystem. 2721102550Siwasaki 2722102550Siwasaki Source Code Structure: 2723102550Siwasaki 2724104470SiwasakiThe source code directory tree was restructured to reflect the 2725114237Snjlcurrent organization of the component architecture. Some files 2726114237Snjland directories have been moved and/or renamed. 2727102550Siwasaki 2728102550Siwasaki Linux: 2729102550Siwasaki 2730102550SiwasakiFixed leaking kacpidpc processes. 2731102550Siwasaki 2732102550SiwasakiFixed queueing event data even when /proc/acpi/event is not 2733102550Siwasakiopened. 2734102550Siwasaki 2735102550Siwasaki ASL Compiler, version X2020: 2736102550Siwasaki 2737114237SnjlMemory allocation performance enhancement - over 24X compile time 2738114237Snjlimprovement on large ASL files. Parse nodes and namestring 2739114237Snjlbuffers are now allocated from a large internal compiler buffer. 2740102550Siwasaki 2741102550SiwasakiThe temporary .SRC file is deleted unless the "-s" option is 2742102550Siwasakispecified 2743102550Siwasaki 2744104470SiwasakiThe "-d" debug output option now sends all output to the .DBG 2745104470Siwasakifile instead of the console. 2746102550Siwasaki 2747102550Siwasaki"External" second parameter is now optional 2748102550Siwasaki 2749102550Siwasaki"ElseIf" syntax now properly allows the predicate 2750102550Siwasaki 2751102550SiwasakiLast operand to "Load" now recognized as a Target operand 2752102550Siwasaki 2753102550SiwasakiDebug object can now be used anywhere as a normal object. 2754102550Siwasaki 2755102550SiwasakiResourceTemplate now returns an object of type BUFFER 2756102550Siwasaki 2757102550SiwasakiEISAID now returns an object of type INTEGER 2758102550Siwasaki 2759102550Siwasaki"Index" now works with a STRING operand 2760102550Siwasaki 2761102550Siwasaki"LoadTable" now accepts optional parameters 2762102550Siwasaki 2763102550Siwasaki"ToString" length parameter is now optional 2764102550Siwasaki 2765102550Siwasaki"Interrupt (ResourceType," parse error fixed. 2766102550Siwasaki 2767104470Siwasaki"Register" with a user-defined region space parse error fixed 2768102550Siwasaki 2769114237SnjlEscaped backslash at the end of a string ("\\") scan/parse error 2770114237Snjlfixed 2771102550Siwasaki 2772102550Siwasaki"Revision" is now an object of type INTEGER. 2773102550Siwasaki 2774102550Siwasaki 2775102550Siwasaki 2776102550Siwasaki------------------------------------------ 2777102550SiwasakiSummary of changes for this label: 05_02_01 2778102550Siwasaki 2779102550SiwasakiLinux: 2780102550Siwasaki 2781102550Siwasaki/proc/acpi/event now blocks properly. 2782102550Siwasaki 2783102550SiwasakiRemoved /proc/sys/acpi. You can still dump your DSDT from 2784102550Siwasaki/proc/acpi/dsdt. 2785102550Siwasaki 2786102550Siwasaki ACPI CA Core Subsystem: 2787102550Siwasaki 2788104470SiwasakiFixed a problem introduced in the previous label where some of 2789104470Siwasakithe "small" resource descriptor types were not recognized. 2790102550Siwasaki 2791102550SiwasakiImproved error messages for the case where an ASL Field is 2792102550Siwasakioutside the range of the parent operation region. 2793102550Siwasaki 2794102550Siwasaki ASL Compiler, version X2018: 2795102550Siwasaki 2796102550SiwasakiAdded error detection for ASL Fields that extend beyond the 2797114237Snjllength of the parent operation region (only if the length of the 2798114237Snjlregion is known at compile time.) This includes fields that have 2799114237Snjla minimum access width that is smaller than the parent region, 2800114237Snjland individual field units that are partially or entirely beyond 2801114237Snjlthe extent of the parent. 2802102550Siwasaki 2803102550Siwasaki 2804102550Siwasaki 2805102550Siwasaki------------------------------------------ 2806102550SiwasakiSummary of changes for this label: 04_27_01 2807102550Siwasaki 2808102550Siwasaki ACPI CA Core Subsystem: 2809102550Siwasaki 2810104470SiwasakiFixed a problem where the namespace mutex could be released at 2811114237Snjlthe wrong time during execution of AcpiRemoveAddressSpaceHandler. 2812102550Siwasaki 2813104470SiwasakiAdded optional thread ID output for debug traces, to simplify 2814114237Snjldebugging of multiple threads. Added context switch notification 2815114237Snjlwhen the debug code realizes that a different thread is now 2816114237Snjlexecuting ACPI code. 2817102550Siwasaki 2818114237SnjlSome additional external data types have been prefixed with the 2819114237Snjlstring "ACPI_" for consistency. This may effect existing code. 2820114237SnjlThe data types affected are the external callback typedefs - 2821114237Snjle.g., WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 2822102550Siwasaki 2823102550Siwasaki Linux: 2824102550Siwasaki 2825102550SiwasakiFixed an issue with the OSL semaphore implementation where a 2826102550Siwasakithread was waking up with an error from receiving a SIGCHLD 2827102550Siwasakisignal. 2828102550Siwasaki 2829114237SnjlLinux version of ACPI CA now uses the system C library for string 2830114237Snjlmanipulation routines instead of a local implementation. 2831102550Siwasaki 2832102550SiwasakiCleaned up comments and removed TBDs. 2833102550Siwasaki 2834102550Siwasaki ASL Compiler, version X2017: 2835102550Siwasaki 2836102550SiwasakiEnhanced error detection and reporting for all file I/O 2837102550Siwasakioperations. 2838102550Siwasaki 2839102550Siwasaki Documentation: 2840102550Siwasaki 2841102550SiwasakiProgrammer Reference updated to version 1.06. 2842102550Siwasaki 2843102550Siwasaki 2844102550Siwasaki 2845102550Siwasaki------------------------------------------ 2846102550SiwasakiSummary of changes for this label: 04_13_01 2847102550Siwasaki 2848102550Siwasaki ACPI CA Core Subsystem: 2849102550Siwasaki 2850102550SiwasakiRestructured support for BufferFields and RegionFields. 2851104470SiwasakiBankFields support is now fully operational. All known 32-bit 2852114237Snjllimitations on field sizes have been removed. Both BufferFields 2853114237Snjland (Operation) RegionFields are now supported by the same field 2854114237Snjlmanagement code. 2855102550Siwasaki 2856114237SnjlResource support now supports QWORD address and IO resources. The 2857114237Snjl16/32/64 bit address structures and the Extended IRQ structure 2858114237Snjlhave been changed to properly handle Source Resource strings. 2859102550Siwasaki 2860114237SnjlA ThreadId of -1 is now used to indicate a "mutex not acquired" 2861114237Snjlcondition internally and must never be returned by 2862114237SnjlAcpiOsThreadId. This reserved value was changed from 0 since Unix 2863114237Snjlsystems allow a thread ID of 0. 2864102550Siwasaki 2865102550SiwasakiLinux: 2866102550Siwasaki 2867102550SiwasakiDriver code reorganized to enhance portability 2868102550Siwasaki 2869102550SiwasakiAdded a kernel configuration option to control ACPI_DEBUG 2870102550Siwasaki 2871102550SiwasakiFixed the EC driver to honor _GLK. 2872102550Siwasaki 2873102550SiwasakiASL Compiler, version X2016: 2874102550Siwasaki 2875114237SnjlFixed support for the "FixedHw" keyword. Previously, the FixedHw 2876114237Snjladdress space was set to 0, not 0x7f as it should be. 2877102550Siwasaki 2878102550Siwasaki ------------------------------------------ 2879102550SiwasakiSummary of changes for this label: 03_13_01 2880102550Siwasaki 2881102550Siwasaki ACPI CA Core Subsystem: 2882102550Siwasaki 2883104470SiwasakiDuring ACPI initialization, the _SB_._INI method is now run if 2884104470Siwasakipresent. 2885102550Siwasaki 2886102550SiwasakiNotify handler fix - notifies are deferred until the parent 2887102550Siwasakimethod completes execution. This fixes the "mutex already 2888102550Siwasakiacquired" issue seen occasionally. 2889102550Siwasaki 2890104470SiwasakiPart of the "implicit conversion" rules in ACPI 2.0 have been 2891114237Snjlfound to cause compatibility problems with existing ASL/AML. The 2892114237Snjlconvert "result-to-target-type" implementation has been removed 2893114237Snjlfor stores to method Args and Locals. Source operand conversion 2894114237Snjlis still fully implemented. Possible changes to ACPI 2.0 2895114237Snjlspecification pending. 2896102550Siwasaki 2897104470SiwasakiFix to AcpiRsCalculatePciRoutingTableLength to return correct 2898104470Siwasakilength. 2899102550Siwasaki 2900102550SiwasakiFix for compiler warnings for 64-bit compiles. 2901102550Siwasaki 2902102550Siwasaki Linux: 2903102550Siwasaki 2904102550Siwasaki/proc output aligned for easier parsing. 2905102550Siwasaki 2906102550SiwasakiRelease-version compile problem fixed. 2907102550Siwasaki 2908104470SiwasakiNew kernel configuration options documented in Configure.help. 2909102550Siwasaki 2910102550SiwasakiIBM 600E - Fixed Sleep button may generate "Invalid <NULL> 2911102550Siwasakicontext" message. 2912102550Siwasaki 2913102550Siwasaki OSPM: 2914102550Siwasaki 2915102550SiwasakiPower resource driver integrated with bus manager. 2916102550Siwasaki 2917102550SiwasakiFixed kernel fault during active cooling for thermal zones. 2918102550Siwasaki 2919102550SiwasakiSource Code: 2920102550Siwasaki 2921102550SiwasakiThe source code tree has been restructured. 2922102550Siwasaki 2923102550Siwasaki 2924102550Siwasaki 2925102550Siwasaki------------------------------------------ 2926102550SiwasakiSummary of changes for this label: 03_02_01 2927102550Siwasaki 2928102550Siwasaki Linux OS Services Layer (OSL): 2929102550Siwasaki 2930102550SiwasakiMajor revision of all Linux-specific code. 2931102550Siwasaki 2932102550SiwasakiModularized all ACPI-specific drivers. 2933102550Siwasaki 2934102550SiwasakiAdded new thermal zone and power resource drivers. 2935102550Siwasaki 2936114237SnjlRevamped /proc interface (new functionality is under /proc/acpi). 2937102550Siwasaki 2938102550SiwasakiNew kernel configuration options. 2939102550Siwasaki 2940102550Siwasaki Linux known issues: 2941102550Siwasaki 2942114237SnjlNew kernel configuration options not documented in Configure.help 2943114237Snjlyet. 2944102550Siwasaki 2945114237Snjl 2946102550SiwasakiModule dependencies not currently implemented. If used, they 2947102550Siwasakishould be loaded in this order: busmgr, power, ec, system, 2948102550Siwasakiprocessor, battery, ac_adapter, button, thermal. 2949102550Siwasaki 2950102550SiwasakiModules will not load if CONFIG_MODVERSION is set. 2951102550Siwasaki 2952102550SiwasakiIBM 600E - entering S5 may reboot instead of shutting down. 2953102550Siwasaki 2954104470SiwasakiIBM 600E - Sleep button may generate "Invalid <NULL> context" 2955104470Siwasakimessage. 2956102550Siwasaki 2957104470SiwasakiSome systems may fail with "execution mutex already acquired" 2958104470Siwasakimessage. 2959102550Siwasaki 2960102550Siwasaki ACPI CA Core Subsystem: 2961102550Siwasaki 2962114237SnjlAdded a new OSL Interface, AcpiOsGetThreadId. This was required 2963114237Snjlfor the deadlock detection code. Defined to return a non-zero, 2964114237Snjl32-bit thread ID for the currently executing thread. May be a 2965114237Snjlnon-zero constant integer on single-thread systems. 2966102550Siwasaki 2967104470SiwasakiImplemented deadlock detection for internal subsystem mutexes. 2968104470SiwasakiWe may add conditional compilation for this code (debug only) 2969104470Siwasakilater. 2970102550Siwasaki 2971104470SiwasakiASL/AML Mutex object semantics are now fully supported. This 2972114237Snjlincludes multiple acquires/releases by owner and support for the 2973114237SnjlMutex SyncLevel parameter. 2974102550Siwasaki 2975102550SiwasakiA new "Force Release" mechanism automatically frees all ASL 2976104470SiwasakiMutexes that have been acquired but not released when a thread 2977114237Snjlexits the interpreter. This forces conformance to the ACPI spec 2978114237Snjl("All mutexes must be released when an invocation exits") and 2979114237Snjlprevents deadlocked ASL threads. This mechanism can be expanded 2980114237Snjl(later) to monitor other resource acquisitions if OEM ASL code 2981114237Snjlcontinues to misbehave (which it will). 2982102550Siwasaki 2983104470SiwasakiSeveral new ACPI exception codes have been added for the Mutex 2984104470Siwasakisupport. 2985102550Siwasaki 2986104470SiwasakiRecursive method calls are now allowed and supported (the ACPI 2987114237Snjlspec does in fact allow recursive method calls.) The number of 2988114237Snjlrecursive calls is subject to the restrictions imposed by the 2989114237SnjlSERIALIZED method keyword and SyncLevel (ACPI 2.0) method 2990104470Siwasakiparameter. 2991102550Siwasaki 2992102550SiwasakiImplemented support for the SyncLevel parameter for control 2993102550Siwasakimethods (ACPI 2.0 feature) 2994102550Siwasaki 2995114237SnjlFixed a deadlock problem when multiple threads attempted to use 2996114237Snjlthe interpreter. 2997102550Siwasaki 2998102550SiwasakiFixed a problem where the string length of a String package 2999102550Siwasakielement was not always set in a package returned from 3000102550SiwasakiAcpiEvaluateObject. 3001102550Siwasaki 3002114237SnjlFixed a problem where the length of a String package element was 3003114237Snjlnot always included in the length of the overall package returned 3004114237Snjlfrom AcpiEvaluateObject. 3005102550Siwasaki 3006102550SiwasakiAdded external interfaces (Acpi*) to the ACPI debug memory 3007102550Siwasakimanager. This manager keeps a list of all outstanding 3008114237Snjlallocations, and can therefore detect memory leaks and attempts 3009114237Snjlto free memory blocks more than once. Useful for code such as the 3010114237Snjlpower manager, etc. May not be appropriate for device drivers. 3011114237SnjlPerformance with the debug code enabled is slow. 3012102550Siwasaki 3013102550SiwasakiThe ACPI Global Lock is now an optional hardware element. 3014102550Siwasaki 3015102550Siwasaki ASL Compiler Version X2015: 3016102550Siwasaki 3017102550SiwasakiIntegrated changes to allow the compiler to be generated on 3018102550Siwasakimultiple platforms. 3019102550Siwasaki 3020102550SiwasakiLinux makefile added to generate the compiler on Linux 3021102550Siwasaki 3022102550Siwasaki Source Code: 3023102550Siwasaki 3024102550SiwasakiAll platform-specific headers have been moved to their own 3025102550Siwasakisubdirectory, Include/Platform. 3026102550Siwasaki 3027102550SiwasakiNew source file added, Interpreter/ammutex.c 3028102550Siwasaki 3029102550SiwasakiNew header file, Include/acstruct.h 3030102550Siwasaki 3031102550Siwasaki Documentation: 3032102550Siwasaki 3033114237SnjlThe programmer reference has been updated for the following new 3034114237Snjlinterfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 3035102550Siwasaki 3036102550Siwasaki ------------------------------------------ 3037102550SiwasakiSummary of changes for this label: 02_08_01 3038102550Siwasaki 3039102550SiwasakiCore ACPI CA Subsystem: Fixed a problem where an error was 3040104470Siwasakiincorrectly returned if the return resource buffer was larger 3041104470Siwasakithan the actual data (in the resource interfaces). 3042102550Siwasaki 3043114237SnjlReferences to named objects within packages are resolved to the 3044114237Snjlfull pathname string before packages are returned directly (via 3045114237Snjlthe AcpiEvaluateObject interface) or indirectly via the resource 3046114237Snjlinterfaces. 3047102550Siwasaki 3048102550SiwasakiLinux OS Services Layer (OSL): 3049102550Siwasaki 3050102550SiwasakiImproved /proc battery interface. 3051102550Siwasaki 3052102550Siwasaki 3053104470SiwasakiAdded C-state debugging output and other miscellaneous fixes. 3054102550Siwasaki 3055102550SiwasakiASL Compiler Version X2014: 3056102550Siwasaki 3057114237SnjlAll defined method arguments can now be used as local variables, 3058114237Snjlincluding the ones that are not actually passed in as parameters. 3059114237SnjlThe compiler tracks initialization of the arguments and issues an 3060114237Snjlexception if they are used without prior assignment (just like 3061114237Snjllocals). 3062102550Siwasaki 3063104470SiwasakiThe -o option now specifies a filename prefix that is used for 3064114237Snjlall output files, including the AML output file. Otherwise, the 3065114237Snjldefault behavior is as follows: 1) the AML goes to the file 3066114237Snjlspecified in the DSDT. 2) all other output files use the input 3067114237Snjlsource filename as the base. 3068102550Siwasaki 3069102550Siwasaki ------------------------------------------ 3070102550SiwasakiSummary of changes for this label: 01_25_01 3071102550Siwasaki 3072114237SnjlCore ACPI CA Subsystem: Restructured the implementation of object 3073114237Snjlstore support within the interpreter. This includes support for 3074114237Snjlthe Store operator as well as any ASL operators that include a 3075114237Snjltarget operand. 3076102550Siwasaki 3077102550SiwasakiPartially implemented support for Implicit Result-to-Target 3078114237Snjlconversion. This is when a result object is converted on the fly 3079114237Snjlto the type of an existing target object. Completion of this 3080114237Snjlsupport is pending further analysis of the ACPI specification 3081114237Snjlconcerning this matter. 3082102550Siwasaki 3083114237SnjlCPU-specific code has been removed from the subsystem (hardware 3084114237Snjldirectory). 3085102550Siwasaki 3086102550SiwasakiNew Power Management Timer functions added 3087102550Siwasaki 3088114237SnjlLinux OS Services Layer (OSL): Moved system state transition code 3089114237Snjlto the core, fixed it, and modified Linux OSL accordingly. 3090102550Siwasaki 3091102550SiwasakiFixed C2 and C3 latency calculations. 3092102550Siwasaki 3093102550Siwasaki 3094114237SnjlWe no longer use the compilation date for the version message on 3095114237Snjlinitialization, but retrieve the version from 3096102550SiwasakiAcpiGetSystemInfo(). 3097102550Siwasaki 3098102550SiwasakiIncorporated for fix Sony VAIO machines. 3099102550Siwasaki 3100104470SiwasakiDocumentation: The Programmer Reference has been updated and 3101104470Siwasakireformatted. 3102102550Siwasaki 3103102550Siwasaki 3104102550SiwasakiASL Compiler: Version X2013: Fixed a problem where the line 3105102550Siwasakinumbering and error reporting could get out of sync in the 3106102550Siwasakipresence of multiple include files. 3107102550Siwasaki 3108102550Siwasaki ------------------------------------------ 3109102550SiwasakiSummary of changes for this label: 01_15_01 3110102550Siwasaki 3111102550SiwasakiCore ACPI CA Subsystem: 3112102550Siwasaki 3113114237SnjlImplemented support for type conversions in the execution of the 3114114237SnjlASL Concatenate operator (The second operand is converted to 3115114237Snjlmatch the type of the first operand before concatenation.) 3116102550Siwasaki 3117102550SiwasakiSupport for implicit source operand conversion is partially 3118114237Snjlimplemented. The ASL source operand types Integer, Buffer, and 3119114237SnjlString are freely interchangeable for most ASL operators and are 3120114237Snjlconverted by the interpreter on the fly as required. Implicit 3121114237SnjlTarget operand conversion (where the result is converted to the 3122114237Snjltarget type before storing) is not yet implemented. 3123102550Siwasaki 3124102550SiwasakiSupport for 32-bit and 64-bit BCD integers is implemented. 3125102550Siwasaki 3126114237SnjlProblem fixed where a field read on an aligned field could cause 3127114237Snjla read past the end of the field. 3128102550Siwasaki 3129114237SnjlNew exception, AE_AML_NO_RETURN_VALUE, is returned when a method 3130114237Snjldoes not return a value, but the caller expects one. (The ASL 3131114237Snjlcompiler flags this as a warning.) 3132102550Siwasaki 3133102550SiwasakiASL Compiler: 3134102550Siwasaki 3135102550SiwasakiVersion X2011: 3136102550Siwasaki1. Static typechecking of all operands is implemented. This 3137102550Siwasakiprevents the use of invalid objects (such as using a Package 3138102550Siwasakiwhere an Integer is required) at compile time instead of at 3139102550Siwasakiinterpreter run-time. 3140114237Snjl2. The ASL source line is printed with ALL errors and warnings. 3141102550Siwasaki3. Bug fix for source EOF without final linefeed. 3142102550Siwasaki4. Debug option is split into a parse trace and a namespace 3143102550Siwasakitrace. 3144102550Siwasaki5. Namespace output option (-n) includes initial values for 3145102550Siwasakiintegers and strings. 3146102550Siwasaki6. Parse-only option added for quick syntax checking. 3147102550Siwasaki7. Compiler checks for duplicate ACPI name declarations 3148102550Siwasaki 3149102550SiwasakiVersion X2012: 3150102550Siwasaki1. Relaxed typechecking to allow interchangeability between 3151114237Snjlstrings, integers, and buffers. These types are now converted by 3152114237Snjlthe interpreter at runtime. 3153114237Snjl2. Compiler reports time taken by each internal subsystem in the 3154114237Snjldebug output file. 3155102550Siwasaki 3156102550Siwasaki 3157102550Siwasaki ------------------------------------------ 3158102550SiwasakiSummary of changes for this label: 12_14_00 3159102550Siwasaki 3160102550SiwasakiASL Compiler: 3161102550Siwasaki 3162104470SiwasakiThis is the first official release of the compiler. Since the 3163104470Siwasakicompiler requires elements of the Core Subsystem, this label 3164104470Siwasakisynchronizes everything. 3165102550Siwasaki 3166102550Siwasaki------------------------------------------ 3167102550SiwasakiSummary of changes for this label: 12_08_00 3168102550Siwasaki 3169102550Siwasaki 3170114237SnjlFixed a problem where named references within the ASL definition 3171114237Snjlof both OperationRegions and CreateXXXFields did not work 3172114237Snjlproperly. The symptom was an AE_AML_OPERAND_TYPE during 3173114237Snjlinitialization of the region/field. This is similar (but not 3174114237Snjlrelated internally) to the problem that was fixed in the last 3175114237Snjllabel. 3176114237Snjl 3177102550SiwasakiImplemented both 32-bit and 64-bit support for the BCD ASL 3178102550Siwasakifunctions ToBCD and FromBCD. 3179102550Siwasaki 3180102550SiwasakiUpdated all legal headers to include "2000" in the copyright 3181102550Siwasakiyears. 3182102550Siwasaki 3183102550Siwasaki ------------------------------------------ 3184102550SiwasakiSummary of changes for this label: 12_01_00 3185102550Siwasaki 3186102550SiwasakiFixed a problem where method invocations within the ASL 3187114237Snjldefinition of both OperationRegions and CreateXXXFields did not 3188114237Snjlwork properly. The symptom was an AE_AML_OPERAND_TYPE during 3189114237Snjlinitialization of the region/field: 3190102550Siwasaki 3191114237Snjl nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 3192114237Snjl[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 3193114237Snjl(0x3005) 3194102550Siwasaki 3195102550SiwasakiFixed a problem where operators with more than one nested 3196104470Siwasakisubexpression would fail. The symptoms were varied, by mostly 3197114237SnjlAE_AML_OPERAND_TYPE errors. This was actually a rather serious 3198114237Snjlproblem that has gone unnoticed until now. 3199102550Siwasaki 3200102550Siwasaki Subtract (Add (1,2), Multiply (3,4)) 3201102550Siwasaki 3202114237SnjlFixed a problem where AcpiGetHandle didn't quite get fixed in the 3203114237Snjlprevious build (The prefix part of a relative path was handled 3204114237Snjlincorrectly). 3205102550Siwasaki 3206114237SnjlFixed a problem where Operation Region initialization failed if 3207114237Snjlthe operation region name was a "namepath" instead of a simple 3208114237Snjl"nameseg". Symptom was an AE_NO_OPERAND error. 3209102550Siwasaki 3210114237SnjlFixed a problem where an assignment to a local variable via the 3211114237Snjlindirect RefOf mechanism only worked for the first such 3212102550Siwasakiassignment. Subsequent assignments were ignored. 3213102550Siwasaki 3214102550Siwasaki ------------------------------------------ 3215102550SiwasakiSummary of changes for this label: 11_15_00 3216102550Siwasaki 3217104470SiwasakiACPI 2.0 table support with backwards support for ACPI 1.0 and 3218104470Siwasakithe 0.71 extensions. Note: although we can read ACPI 2.0 BIOS 3219104470Siwasakitables, the AML interpreter does NOT have support for the new 3220104470Siwasaki2.0 ASL grammar terms at this time. 3221102550Siwasaki 3222104470SiwasakiAll ACPI hardware access is via the GAS structures in the ACPI 3223104470Siwasaki2.0 FADT. 3224102550Siwasaki 3225104470SiwasakiAll physical memory addresses across all platforms are now 64 3226104470Siwasakibits wide. Logical address width remains dependent on the 3227102550Siwasakiplatform (i.e., "void *"). 3228102550Siwasaki 3229114237SnjlAcpiOsMapMemory interface changed to a 64-bit physical address. 3230102550Siwasaki 3231114237SnjlThe AML interpreter integer size is now 64 bits, as per the ACPI 3232114237Snjl2.0 specification. 3233102550Siwasaki 3234104470SiwasakiFor backwards compatibility with ACPI 1.0, ACPI tables with a 3235104470Siwasakirevision number less than 2 use 32-bit integers only. 3236102550Siwasaki 3237114237SnjlFixed a problem where the evaluation of OpRegion operands did not 3238114237Snjlalways resolve them to numbers properly. 3239102550Siwasaki 3240102550Siwasaki------------------------------------------ 3241102550SiwasakiSummary of changes for this label: 10_20_00 3242102550Siwasaki 3243114237SnjlFix for CBN_._STA issue. This fix will allow correct access to 3244114237SnjlCBN_ OpRegions when the _STA returns 0x8. 3245102550Siwasaki 3246104470SiwasakiSupport to convert ACPI constants (Ones, Zeros, One) to actual 3247104470Siwasakivalues before a package object is returned 3248102550Siwasaki 3249104470SiwasakiFix for method call as predicate to if/while construct causing 3250104470Siwasakiincorrect if/while behavior 3251102550Siwasaki 3252114237SnjlFix for Else block package lengths sometimes calculated wrong (if 3253114237Snjlblock > 63 bytes) 3254102550Siwasaki 3255102550SiwasakiFix for Processor object length field, was always zero 3256102550Siwasaki 3257102550SiwasakiTable load abort if FACP sanity check fails 3258102550Siwasaki 3259102550SiwasakiFix for problem with Scope(name) if name already exists 3260102550Siwasaki 3261102550SiwasakiWarning emitted if a named object referenced cannot be found 3262102550Siwasaki(resolved) during method execution. 3263102550Siwasaki 3264102550Siwasaki 3265102550Siwasaki 3266102550Siwasaki 3267102550Siwasaki 3268102550Siwasaki------------------------------------------ 3269102550SiwasakiSummary of changes for this label: 9_29_00 3270102550Siwasaki 3271114237SnjlNew table initialization interfaces: AcpiInitializeSubsystem no 3272114237Snjllonger has any parameters AcpiFindRootPointer - Find the RSDP (if 3273114237Snjlnecessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 3274114237Snjl>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 3275114237SnjlAcpiLoadTables 3276102550Siwasaki 3277104470SiwasakiNote: These interface changes require changes to all existing 3278104470SiwasakiOSDs 3279102550Siwasaki 3280114237SnjlThe PCI_Config default address space handler is always installed 3281114237Snjlat the root namespace object. 3282102550Siwasaki 3283102550Siwasaki------------------------------------------- 3284102550SiwasakiSummary of changes for this label: 09_15_00 3285102550Siwasaki 3286102550SiwasakiThe new initialization architecture is implemented. New 3287114237Snjlinterfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 3288114237SnjlAcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 3289114237Snjl(Namespace is automatically loaded when a table is loaded) 3290102550Siwasaki 3291104470SiwasakiThe ACPI_OPERAND_OBJECT has been optimized to shrink its size 3292104470Siwasakifrom 52 bytes to 32 bytes. There is usually one of these for 3293104470Siwasakievery namespace object, so the memory savings is significant. 3294102550Siwasaki 3295114237SnjlImplemented just-in-time evaluation of the CreateField operators. 3296102550Siwasaki 3297102550SiwasakiBug fixes for IA-64 support have been integrated. 3298102550Siwasaki 3299102550SiwasakiAdditional code review comments have been implemented 3300102550Siwasaki 3301104470SiwasakiThe so-called "third pass parse" has been replaced by a final 3302104470Siwasakiwalk through the namespace to initialize all operation regions 3303104470Siwasaki(address spaces) and fields that have not yet been initialized 3304104470Siwasakiduring the execution of the various _INI and REG methods. 3305102550Siwasaki 3306102550SiwasakiNew file - namespace/nsinit.c 3307102550Siwasaki 3308102550Siwasaki------------------------------------------- 3309102550SiwasakiSummary of changes for this label: 09_01_00 3310102550Siwasaki 3311104470SiwasakiNamespace manager data structures have been reworked to change 3312104470Siwasakithe primary object from a table to a single object. This has 3313104470Siwasakiresulted in dynamic memory savings of 3X within the namespace 3314104470Siwasakiand 2X overall in the ACPI CA subsystem. 3315102550Siwasaki 3316102550SiwasakiFixed problem where the call to AcpiEvFindPciRootBuses was 3317102550Siwasakiinadvertently left commented out. 3318102550Siwasaki 3319114237SnjlReduced the warning count when generating the source with the GCC 3320114237Snjlcompiler. 3321102550Siwasaki 3322102550SiwasakiRevision numbers added to each module header showing the 3323104470SiwasakiSourceSafe version of the file. Please refer to this version 3324114237Snjlnumber when giving us feedback or comments on individual modules. 3325102550Siwasaki 3326114237SnjlThe main object types within the subsystem have been renamed to 3327114237Snjlclarify their purpose: 3328102550Siwasaki 3329102550SiwasakiACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 3330102550SiwasakiACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 3331102550SiwasakiACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 3332102550Siwasaki 3333114237SnjlNOTE: no changes to the initialization sequence are included in 3334114237Snjlthis label. 3335102550Siwasaki 3336102550Siwasaki------------------------------------------- 3337102550SiwasakiSummary of changes for this label: 08_23_00 3338102550Siwasaki 3339102550SiwasakiFixed problem where TerminateControlMethod was being called 3340102550Siwasakimultiple times per method 3341102550Siwasaki 3342114237SnjlFixed debugger problem where single stepping caused a semaphore 3343114237Snjlto be oversignalled 3344102550Siwasaki 3345104470SiwasakiImproved performance through additional parse object caching - 3346104470Siwasakiadded ACPI_EXTENDED_OP type 3347102550Siwasaki 3348102550Siwasaki------------------------------------------- 3349102550SiwasakiSummary of changes for this label: 08_10_00 3350102550Siwasaki 3351102550SiwasakiParser/Interpreter integration: Eliminated the creation of 3352102550Siwasakicomplete parse trees for ACPI tables and control methods. 3353114237SnjlInstead, parse subtrees are created and then deleted as soon as 3354114237Snjlthey are processed (Either entered into the namespace or 3355104470Siwasakiexecuted by the interpreter). This reduces the use of dynamic 3356104470Siwasakikernel memory significantly. (about 10X) 3357102550Siwasaki 3358114237SnjlException codes broken into classes and renumbered. Be sure to 3359114237Snjlrecompile all code that includes acexcep.h. Hopefully we won't 3360114237Snjlhave to renumber the codes again now that they are split into 3361114237Snjlclasses (environment, programmer, AML code, ACPI table, and 3362114237Snjlinternal). 3363102550Siwasaki 3364104470SiwasakiFixed some additional alignment issues in the Resource Manager 3365104470Siwasakisubcomponent 3366102550Siwasaki 3367114237SnjlImplemented semaphore tracking in the AcpiExec utility, and fixed 3368114237Snjlseveral places where mutexes/semaphores were being unlocked 3369114237Snjlwithout a corresponding lock operation. There are no known 3370114237Snjlsemaphore or mutex "leaks" at this time. 3371102550Siwasaki 3372114237SnjlFixed the case where an ASL Return operator is used to return an 3373114237Snjlunnamed package. 3374102550Siwasaki 3375102550Siwasaki------------------------------------------- 3376102550SiwasakiSummary of changes for this label: 07_28_00 3377102550Siwasaki 3378102550SiwasakiFixed a problem with the way addresses were calculated in 3379114237SnjlAcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 3380114237Snjlmanifested itself when a Field was created with WordAccess or 3381114237SnjlDwordAccess, but the field unit defined within the Field was 3382114237Snjlless than a Word or Dword. 3383102550Siwasaki 3384102550SiwasakiFixed a problem in AmlDumpOperands() module's loop to pull 3385104470Siwasakioperands off of the operand stack to display information. The 3386114237Snjlproblem manifested itself as a TLB error on 64-bit systems when 3387114237Snjlaccessing an operand stack with two or more operands. 3388102550Siwasaki 3389114237SnjlFixed a problem with the PCI configuration space handlers where 3390114237Snjlcontext was getting confused between accesses. This required a 3391114237Snjlchange to the generic address space handler and address space 3392114237Snjlsetup definitions. Handlers now get both a global handler 3393114237Snjlcontext (this is the one passed in by the user when executing 3394114237SnjlAcpiInstallAddressSpaceHandler() and a specific region context 3395114237Snjlthat is unique to each region (For example, the _ADR, _SEG and 3396114237Snjl_BBN values associated with a specific region). The generic 3397114237Snjlfunction definitions have changed to the following: 3398102550Siwasaki 3399114237Snjltypedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 3400114237SnjlUINT32 Address, UINT32 BitWidth, UINT32 *Value, void 3401104470Siwasaki*HandlerContext, // This used to be void *Context void 3402102550Siwasaki*RegionContext); // This is an additional parameter 3403102550Siwasaki 3404102550Siwasakitypedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 3405102550SiwasakiRegionHandle, UINT32 Function, void *HandlerContext, void 3406102550Siwasaki**RegionContext); // This used to be **ReturnContext 3407102550Siwasaki 3408102550Siwasaki------------------------------------------- 3409102550SiwasakiSummary of changes for this label: 07_21_00 3410102550Siwasaki 3411102550SiwasakiMajor file consolidation and rename. All files within the 3412102550Siwasakiinterpreter have been renamed as well as most header files. 3413114237SnjlThis was done to prevent collisions with existing files in the 3414114237Snjlhost OSs -- filenames such as "config.h" and "global.h" seem to 3415114237Snjlbe quite common. The VC project files have been updated. All 3416114237Snjlmakefiles will require modification. 3417102550Siwasaki 3418114237SnjlThe parser/interpreter integration continues in Phase 5 with the 3419114237Snjlimplementation of a complete 2-pass parse (the AML is parsed 3420114237Snjltwice) for each table; This avoids the construction of a huge 3421114237Snjlparse tree and therefore reduces the amount of dynamic memory 3422114237Snjlrequired by the subsystem. Greater use of the parse object cache 3423114237Snjlmeans that performance is unaffected. 3424102550Siwasaki 3425102550SiwasakiMany comments from the two code reviews have been rolled in. 3426102550Siwasaki 3427102550SiwasakiThe 64-bit alignment support is complete. 3428102550Siwasaki 3429102550Siwasaki------------------------------------------- 3430102550SiwasakiSummary of changes for this label: 06_30_00 3431102550Siwasaki 3432114237SnjlWith a nod and a tip of the hat to the technology of yesteryear, 3433114237Snjlwe've added support in the source code for 80 column output 3434114237Snjldevices. The code is now mostly constrained to 80 columns or 3435114237Snjlless to support environments and editors that 1) cannot display 3436114237Snjlor print more than 80 characters on a single line, and 2) cannot 3437114237Snjldisable line wrapping. 3438102550Siwasaki 3439104470SiwasakiA major restructuring of the namespace data structure has been 3440104470Siwasakicompleted. The result is 1) cleaner and more 3441114237Snjlunderstandable/maintainable code, and 2) a significant reduction 3442114237Snjlin the dynamic memory requirement for each named ACPI object 3443114237Snjl(almost half). 3444102550Siwasaki 3445102550Siwasaki------------------------------------------- 3446102550SiwasakiSummary of changes for this label: 06_23_00 3447102550Siwasaki 3448114237SnjlLinux support has been added. In order to obtain approval to get 3449114237Snjlthe ACPI CA subsystem into the Linux kernel, we've had to make 3450114237Snjlquite a few changes to the base subsystem that will affect all 3451114237Snjlusers (all the changes are generic and OS- independent). The 3452114237Snjleffects of these global changes have been somewhat far reaching. 3453114237SnjlFiles have been merged and/or renamed and interfaces have been 3454114237Snjlrenamed. The major changes are described below. 3455102550Siwasaki 3456102550SiwasakiOsd* interfaces renamed to AcpiOs* to eliminate namespace 3457102550Siwasakipollution/confusion within our target kernels. All OSD 3458114237Snjlinterfaces must be modified to match the new naming convention. 3459102550Siwasaki 3460102550SiwasakiFiles merged across the subsystem. A number of the smaller 3461102550Siwasakisource and header files have been merged to reduce the file 3462114237Snjlcount and increase the density of the existing files. There are 3463114237Snjltoo many to list here. In general, makefiles that call out 3464114237Snjlindividual files will require rebuilding. 3465102550Siwasaki 3466104470SiwasakiInterpreter files renamed. All interpreter files now have the 3467104470Siwasakiprefix am* instead of ie* and is*. 3468102550Siwasaki 3469104470SiwasakiHeader files renamed: The acapi.h file is now acpixf.h. The 3470114237Snjlacpiosd.h file is now acpiosxf.h. We are removing references to 3471114237Snjlthe acronym "API" since it is somewhat windowsy. The new name is 3472114237Snjl"external interface" or xface or xf in the filenames.j 3473102550Siwasaki 3474102550Siwasaki 3475114237SnjlAll manifest constants have been forced to upper case (some were 3476114237Snjlmixed case.) Also, the string "ACPI_" has been prepended to 3477114237Snjlmany (not all) of the constants, typedefs, and structs. 3478102550Siwasaki 3479102550SiwasakiThe globals "DebugLevel" and "DebugLayer" have been renamed 3480102550Siwasaki"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 3481102550Siwasaki 3482102550SiwasakiAll other globals within the subsystem are now prefixed with 3483102550Siwasaki"AcpiGbl_" Internal procedures within the subsystem are now 3484114237Snjlprefixed with "Acpi" (with only a few exceptions). The original 3485114237Snjltwo-letter abbreviation for the subcomponent remains after 3486114237Snjl"Acpi" - for example, CmCallocate became AcpiCmCallocate. 3487102550Siwasaki 3488102550SiwasakiAdded a source code translation/conversion utility. Used to 3489114237Snjlgenerate the Linux source code, it can be modified to generate 3490114237Snjlother types of source as well. Can also be used to cleanup 3491114237Snjlexisting source by removing extraneous spaces and blank lines. 3492114237SnjlFound in tools/acpisrc/* 3493102550Siwasaki 3494102550SiwasakiOsdUnMapMemory was renamed to OsdUnmapMemory and then 3495102550SiwasakiAcpiOsUnmapMemory. (UnMap became Unmap). 3496102550Siwasaki 3497114237SnjlA "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 3498114237SnjlWhen set to one, this indicates that the caller wants to use the 3499114237Snjlsemaphore as a mutex, not a counting semaphore. ACPI CA uses 3500114237Snjlboth types. However, implementers of this call may want to use 3501114237Snjldifferent OS primitives depending on the type of semaphore 3502114237Snjlrequested. For example, some operating systems provide separate 3503114237Snjl"mutex" and "semaphore" interfaces - where the mutex interface 3504114237Snjlis much faster because it doesn't have all the overhead of a 3505114237Snjlfull semaphore implementation. 3506102550Siwasaki 3507104470SiwasakiFixed a deadlock problem where a method that accesses the PCI 3508114237Snjladdress space can block forever if it is the first access to the 3509114237Snjlspace. 3510102550Siwasaki 3511102550Siwasaki------------------------------------------- 3512102550SiwasakiSummary of changes for this label: 06_02_00 3513102550Siwasaki 3514102550SiwasakiSupport for environments that cannot handle unaligned data 3515114237Snjlaccesses (e.g. firmware and OS environments devoid of alignment 3516114237Snjlhandler technology namely SAL/EFI and the IA-64 Linux kernel) 3517114237Snjlhas been added (via configurable macros) in these three areas: - 3518114237SnjlTransfer of data from the raw AML byte stream is done via byte 3519114237Snjlmoves instead of word/dword/qword moves. - External objects 3520114237Snjlare aligned within the user buffer, including package elements 3521114237Snjl(sub-objects). - Conversion of name strings to UINT32 Acpi Names 3522114237Snjlis now done byte-wise. 3523102550Siwasaki 3524102550SiwasakiThe Store operator was modified to mimic Microsoft's 3525102550Siwasakiimplementation when storing to a Buffer Field. 3526102550Siwasaki 3527102550SiwasakiAdded a check of the BM_STS bit before entering C3. 3528102550Siwasaki 3529114237SnjlThe methods subdirectory has been obsoleted and removed. A new 3530114237Snjlfile, cmeval.c subsumes the functionality. 3531102550Siwasaki 3532102550SiwasakiA 16-bit (DOS) version of AcpiExec has been developed. The 3533102550Siwasakimakefile is under the acpiexec directory. 3534