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  25. 09 Jul, 2006 1 commit
    • Bob Moore's avatar
      ACPI: ACPICA 20060707 · f6dd9221
      Bob Moore authored
      support C compilers that do not allow the initialization
      of address pointers within packed structures - even though
      the hardware itself may support misaligned transfers. Some
      of the debug data structures are packed by default to
      minimize size.
      Added an error message for the case where
      acpi_os_get_thread_id() returns zero. A non-zero value is
      required by the core ACPICA code to ensure the proper
      operation of AML mutexes and recursive control methods.
      The DSDT is now the only ACPI table that determines whether
      the AML interpreter is in 32-bit or 64-bit mode. Not really
      a functional change, but the hooks for per-table 32/64
      switching have been removed from the code. A clarification
      to the ACPI specification is forthcoming in ACPI 3.0B.
      Fixed a possible leak of an Owner ID in the error
      path of tbinstal.c acpi_tb_init_table_descriptor() and
      migrated all table OwnerID deletion to a single place in
      acpi_tb_uninstall_table() to correct possible leaks when using
      the acpi_tb_delete_tables_by_type() interface (with assistance
      from Lance Ortiz.)
      Fixed a problem with Serialized control methods where the
      semaphore associated with the method could be over-signaled
      after multiple method invocations.
      Fixed two issues with the locking of the internal
      namespace data structure. Both the Unload() operator and
      acpi_unload_table() interface now lock the namespace during
      the namespace deletion associated with the table unload
      (with assistance from Linn Crosetto.)
      Fixed problem reports (Valery Podrezov) integrated: -
      Eliminate unnecessary memory allocation for CreateXxxxField
      Fixed problem reports (Fiodor Suietov) integrated: -
      Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
      - On Address Space handler deletion, needless deactivation
      call (BZ 374) - AcpiRemoveAddressSpaceHandler: validate
      Device handle parameter (BZ 375) - Possible memory leak,
      Notify sub-objects of Processor, Power, ThermalZone (BZ
      376) - AcpiRemoveAddressSpaceHandler: validate Handler
      parameter (BZ 378) - Minimum Length of RSDT should be
      validated (BZ 379) - AcpiRemoveNotifyHandler: return
      AE_NOT_EXIST if Processor Obj has no Handler (BZ (380)
      - AcpiUnloadTable: return AE_NOT_EXIST if no table of
      specified type loaded (BZ 381)
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  26. 14 Jun, 2006 1 commit
    • Bob Moore's avatar
      ACPI: ACPICA 20060421 · b229cf92
      Bob Moore authored
      Removed a device initialization optimization introduced in
      20051216 where the _STA method was not run unless an _INI
      was also present for the same device. This optimization
      could cause problems because it could allow _INI methods
      to be run within a not-present device subtree (If a
      not-present device had no _INI, _STA would not be run,
      the not-present status would not be discovered, and the
      children of the device would be incorrectly traversed.)
      Implemented a new _STA optimization where namespace
      subtrees that do not contain _INI are identified and
      ignored during device initialization. Selectively running
      _STA can significantly improve boot time on large machines
      (with assistance from Len Brown.)
      Implemented support for the device initialization case
      where the returned _STA flags indicate a device not-present
      but functioning. In this case, _INI is not run, but the
      device children are examined for presence, as per the
      ACPI specification.
      Implemented an additional change to the IndexField support
      in order to conform to MS behavior. The value written to
      the Index Register is not simply a byte offset, it is a
      byte offset in units of the access width of the parent
      Index Field. (Fiodor Suietov)
      Defined and deployed a new OSL interface,
      acpi_os_validate_address().  This interface is called during
      the creation of all AML operation regions, and allows
      the host OS to exert control over what addresses it will
      allow the AML code to access. Operation Regions whose
      addresses are disallowed will cause a runtime exception
      when they are actually accessed (will not affect or abort
      table loading.)
      Defined and deployed a new OSL interface,
      acpi_os_validate_interface().  This interface allows the host OS
      to match the various "optional" interface/behavior strings
      for the _OSI predefined control method as appropriate
      (with assistance from Bjorn Helgaas.)
      Restructured and corrected various problems in the
      exception handling code paths within DsCallControlMethod
      and DsTerminateControlMethod in dsmethod (with assistance
      from Takayoshi Kochi.)
      Modified the Linux source converter to ignore quoted string
      literals while converting identifiers from mixed to lower
      case. This will correct problems with the disassembler
      and other areas where such strings must not be modified.
      The ACPI_FUNCTION_* macros no longer require quotes around
      the function name. This allows the Linux source converter
      to convert the names, now that the converter ignores
      quoted strings.
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  27. 31 Mar, 2006 1 commit
  28. 31 Jan, 2006 1 commit
    • Bob Moore's avatar
      [ACPI] ACPICA 20060127 · b8e4d893
      Bob Moore authored
      Implemented support in the Resource Manager to allow
      unresolved namestring references within resource package
      objects for the _PRT method. This support is in addition
      to the previously implemented unresolved reference
      support within the AML parser. If the interpreter slack
      mode is enabled (true on Linux unless acpi=strict),
      these unresolved references will be passed through
      to the caller as a NULL package entry.
      Implemented and deployed new macros and functions for
      error and warning messages across the subsystem. These
      macros are simpler and generate less code than their
      predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
      ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_*
      Implemented the acpi_cpu_flags type to simplify host OS
      integration of the Acquire/Release Lock OSL interfaces.
      Suggested by Steven Rostedt and Andrew Morton.
      Fixed a problem where Alias ASL operators are sometimes
      not correctly resolved. causing AE_AML_INTERNAL
      Fixed several problems with the implementation of the
      ConcatenateResTemplate ASL operator. As per the ACPI
      specification, zero length buffers are now treated as a
      single EndTag. One-length buffers always cause a fatal
      exception. Non-zero length buffers that do not end with
      a full 2-byte EndTag cause a fatal exception.
      Fixed a possible structure overwrite in the
      AcpiGetObjectInfo external interface. (With assistance
      from Thomas Renninger)
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  29. 20 Jan, 2006 1 commit
    • Bob Moore's avatar
      [ACPI] ACPICA 20060113 · 4a90c7e8
      Bob Moore authored
      Added 2006 copyright.
      At SuSE's suggestion, enabled all error messages
      without enabling function tracing, ie with CONFIG_ACPI_DEBUG=n
      Replaced all instances of the ACPI_DEBUG_PRINT macro invoked at
      the ACPI_DB_ERROR and ACPI_DB_WARN debug levels with
      respectively. This preserves all error and warning messages
      in the non-debug version of the ACPICA code (this has been
      referred to as the "debug lite" option.) Over 200 cases
      were converted to create a total of over 380 error/warning
      messages across the ACPICA code. This increases the code
      and data size of the default non-debug version by about 13K.
      Added ACPI_NO_ERROR_MESSAGES flag to enable deleting all messages.
      The size of the debug version remains about the same.
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  30. 10 Dec, 2005 1 commit
    • Bob Moore's avatar
      [ACPI] ACPICA 20051117 · c51a4de8
      Bob Moore authored
      Fixed a problem in the AML parser where the method thread
      count could be decremented below zero if any errors
      occurred during the method parse phase. This should
      eliminate AE_AML_METHOD_LIMIT exceptions seen on some
      machines. This also fixed a related regression with the
      mechanism that detects and corrects methods that cannot
      properly handle reentrancy (related to the deployment of
      the new OwnerId mechanism.)
      Eliminated the pre-parsing of control methods (to detect
      errors) during table load. Related to the problem above,
      this was causing unwind issues if any errors occurred
      during the parse, and it seemed to be overkill. A table
      load should not be aborted if there are problems with
      any single control method, thus rendering this feature
      rather pointless.
      Fixed a problem with the new table-driven resource manager
      where an internal buffer overflow could occur for small
      resource templates.
      Implemented a new external interface, acpi_get_vendor_resource()
      This interface will find and return a vendor-defined
      resource descriptor within a _CRS or _PRS
      method via an ACPI 3.0 UUID match. (from Bjorn Helgaas)
      Removed the length limit (200) on string objects as
      per the upcoming ACPI 3.0A specification. This affects
      the following areas of the interpreter: 1) any implicit
      conversion of a Buffer to a String, 2) a String object
      result of the ASL Concatentate operator, 3) the String
      object result of the ASL ToString operator.
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  31. 05 Aug, 2005 1 commit
  32. 14 Jul, 2005 1 commit
    • Robert Moore's avatar
      ACPICA 20050617-0624 from Bob Moore <robert.moore@intel.com> · 73459f73
      Robert Moore authored
      ACPICA 20050617:
      Moved the object cache operations into the OS interface
      layer (OSL) to allow the host OS to handle these operations
      if desired (for example, the Linux OSL will invoke the
      slab allocator).  This support is optional; the compile
      time define ACPI_USE_LOCAL_CACHE may be used to utilize
      the original cache code in the ACPI CA core.  The new OSL
      interfaces are shown below.  See utalloc.c for an example
      implementation, and acpiosxf.h for the exact interface
      definitions.  Thanks to Alexey Starikovskiy.
      Modified the interfaces to acpi_os_acquire_lock and
      acpi_os_release_lock to return and restore a flags
      parameter.  This fits better with many OS lock models.
      Note: the current execution state (interrupt handler
      or not) is no longer passed to these interfaces.  If
      necessary, the OSL must determine this state by itself, a
      simple and fast operation.  Thanks to Alexey Starikovskiy.
      Fixed a problem in the ACPI table handling where a valid
      XSDT was assumed present if the revision of the RSDP
      was 2 or greater.  According to the ACPI specification,
      the XSDT is optional in all cases, and the table manager
      therefore now checks for both an RSDP >=2 and a valid
      XSDT pointer.  Otherwise, the RSDT pointer is used.
      Some ACPI 2.0 compliant BIOSs contain only the RSDT.
      Fixed an interpreter problem with the Mid() operator in the
      case of an input string where the resulting output string
      is of zero length.  It now correctly returns a valid,
      null terminated string object instead of a string object
      with a null pointer.
      Fixed a problem with the control method argument handling
      to allow a store to an Arg object that already contains an
      object of type Device.  The Device object is now correctly
      overwritten.  Previously, an error was returned.
      ACPICA 20050624:
      Modified the new OSL cache interfaces to use ACPI_CACHE_T
      as the type for the host-defined cache object.  This allows
      the OSL implementation to define and type this object in
      any manner desired, simplifying the OSL implementation.
      For example, ACPI_CACHE_T is defined as kmem_cache_t for
      Linux, and should be defined in the OS-specific header
      file for other operating systems as required.
      Changed the interface to AcpiOsAcquireObject to directly
      return the requested object as the function return (instead
      of ACPI_STATUS.) This change was made for performance
      reasons, since this is the purpose of the interface in the
      first place.  acpi_os_acquire_object is now similar to the
      acpi_os_allocate interface.  Thanks to Alexey Starikovskiy.
      Modified the initialization sequence in
      acpi_initialize_subsystem to call the OSL interface
      acpi_osl_initialize first, before any local initialization.
      This change was required because the global initialization
      now calls OSL interfaces.
      Restructured the code base to split some files because
      of size and/or because the code logically belonged in a
      separate file.  New files are listed below.
        utilities/utcache.c	/* Local cache interfaces */
        utilities/utmutex.c	/* Local mutex support */
        utilities/utstate.c	/* State object support */
        parser/psloop.c	/* Main AML parse loop */
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  33. 12 Jul, 2005 1 commit
    • Robert Moore's avatar
      ACPICA 20050408 from Bob Moore · 44f6c012
      Robert Moore authored
      Fixed three cases in the interpreter where an "index"
      argument to an ASL function was still (internally) 32
      bits instead of the required 64 bits.  This was the Index
      argument to the Index, Mid, and Match operators.
      The "strupr" function is now permanently local
      (acpi_ut_strupr), since this is not a POSIX-defined
      function and not present in most kernel-level C
      libraries. References to the C library strupr function
      have been removed from the headers.
      Completed the deployment of static
      functions/prototypes. All prototypes with the static
      attribute have been moved from the headers to the owning
      C file.
      ACPICA 20050329 from Bob Moore
      An error is now generated if an attempt is made to create
      a Buffer Field of length zero (A CreateField with a length
      operand of zero.)
      The interpreter now issues a warning whenever executable
      code at the module level is detected during ACPI table
      load. This will give some idea of the prevalence of this
      type of code.
      Implemented support for references to named objects (other
      than control methods) within package objects.
      Enhanced package object output for the debug
      object. Package objects are now completely dumped, showing
      all elements.
      Enhanced miscellaneous object output for the debug
      object. Any object can now be written to the debug object
      (for example, a device object can be written, and the type
      of the object will be displayed.)
      The "static" qualifier has been added to all local
      functions across the core subsystem.
      The number of "long" lines (> 80 chars) within the source
      has been significantly reduced, by about 1/3.
      Cleaned up all header files to ensure that all CA/iASL
      functions are prototyped (even static functions) and the
      formatting is consistent.
      Two new header files have been added, acopcode.h and
      Removed several obsolete functions that were no longer
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  34. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      Let it rip!