1. 10 Oct, 2006 1 commit
  2. 28 Jun, 2006 1 commit
    • Bob Moore's avatar
      ACPI: ACPICA 20060623 · 967440e3
      Bob Moore authored
      Implemented a new acpi_spinlock type for the OSL lock
      interfaces.  This allows the type to be customized to
      the host OS for improved efficiency (since a spinlock is
      usually a very small object.)
      Implemented support for "ignored" bits in the ACPI
      registers.  According to the ACPI specification, these
      bits should be preserved when writing the registers via
      a read/modify/write cycle. There are 3 bits preserved
      in this manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9],
      and PM1_STATUS[11].
      Implemented the initial deployment of new OSL mutex
      interfaces.  Since some host operating systems have
      separate mutex and semaphore objects, this feature was
      requested. The base code now uses mutexes (and the new
      mutex interfaces) wherever a binary semaphore was used
      previously. However, for the current release, the mutex
      interfaces are defined as macros to map them to the
      existing semaphore interfaces.
      Fixed several problems with the support for the control
      method SyncLevel parameter. The SyncLevel now works
      according to the ACPI specification and in concert with the
      Mutex SyncLevel parameter, since the current SyncLevel is
      a property of the executing thread. Mutual exclusion for
      control methods is now implemented with a mutex instead
      of a semaphore.
      Fixed three instances of the use of the C shift operator
      in the bitfield support code (exfldio.c) to avoid the use
      of a shift value larger than the target data width. The
      behavior of C compilers is undefined in this case and can
      cause unpredictable results, and therefore the case must
      be detected and avoided.  (Fiodor Suietov)
      Added an info message whenever an SSDT or OEM table
      is loaded dynamically via the Load() or LoadTable()
      ASL operators. This should improve debugging capability
      since it will show exactly what tables have been loaded
      (beyond the tables present in the RSDT/XSDT.)
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  3. 14 Jun, 2006 3 commits
    • Bob Moore's avatar
      ACPI: ACPICA 20060608 · 4c90ece2
      Bob Moore authored
      Converted the locking mutex used for the ACPI hardware
      to a spinlock. This change should eliminate all problems
      caused by attempting to acquire a semaphore at interrupt
      level, and it means that all ACPICA external interfaces
      that directly access the ACPI hardware can be safely
      called from interrupt level.
      Fixed a regression introduced in 20060526 where the ACPI
      device initialization could be prematurely aborted with
      an AE_NOT_FOUND if a device did not have an optional
      _INI method.
      Fixed an IndexField issue where a write to the Data
      Register should be limited in size to the AccessSize
      (width) of the IndexField itself. (BZ 433, Fiodor Suietov)
      Fixed problem reports (Valery Podrezov) integrated: - Allow
      store of ThermalZone objects to Debug object.
      Fixed problem reports (Fiodor Suietov) integrated: -
      acpi_get_table_header() doesn't handle multiple instances
      correctly (BZ 364)
      Removed four global mutexes that were obsolete and were
      no longer being used.
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    • Bob Moore's avatar
      ACPI: ACPICA 20060526 · 4119532c
      Bob Moore authored
      Restructured, flattened, and simplified the internal
      interfaces for namespace object evaluation - resulting
      in smaller code, less CPU stack use, and fewer
      interfaces. (With assistance from Mikhail Kouzmich)
      Fixed a problem with the CopyObject operator where the
      first parameter was not typed correctly for the parser,
      interpreter, compiler, and disassembler. Caused various
      errors and unexpected behavior.
      Fixed a problem where a ShiftLeft or ShiftRight of
      more than 64 bits produced incorrect results with some
      C compilers. Since the behavior of C compilers when
      the shift value is larger than the datatype width is
      apparently not well defined, the interpreter now detects
      this condition and simply returns zero as expected in all
      such cases. (BZ 395)
      Fixed problem reports (Valery Podrezov) integrated: -
      Update String-to-Integer conversion to match ACPI 3.0A spec
      Allow interpreter to handle nested method declarations
      Fixed problem reports (Fiodor Suietov) integrated: -
      acpi_terminate() doesn't free debug memory allocation
      list objects (BZ 355) - After Core Subsystem
      shutdown, acpi_subsystem_status() returns AE_OK (BZ 356) -
      acpi_os_unmap_memory() for RSDP can be invoked inconsistently
      (BZ 357) - Resource Manager should return AE_TYPE for
      non-device objects (BZ 358) - Incomplete cleanup branch
      in AcpiNsEvaluateRelative (BZ 359) - Use acpi_os_free()
      instead of ACPI_FREE in acpi_rs_set_srs_method_data (BZ 360)
      - Incomplete cleanup branch in acpi_ps_parse_aml (BZ 361) -
      Incomplete cleanup branch in acpi_ds_delete_walk_state (BZ 362)
      - acpi_get_table_header returns AE_NO_ACPI_TABLES until DSDT
      is loaded (BZ 365) - Status of the Global Initialization
      Handler call not used (BZ 366) - Incorrect object parameter
      to Global Initialization Handler (BZ 367)
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    • 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>
  4. 31 Mar, 2006 2 commits
  5. 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>
  6. 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>
  7. 28 Dec, 2005 1 commit
    • Bob Moore's avatar
      [ACPI] ACPICA 20051216 · defba1d8
      Bob Moore authored
      Implemented optional support to allow unresolved names
      within ASL Package objects. A null object is inserted in
      the package when a named reference cannot be located in
      the current namespace. Enabled via the interpreter slack
      flag which Linux has enabled by default (acpi=strict
      to disable slack).  This should eliminate AE_NOT_FOUND
      exceptions seen on machines that contain such code.
      Implemented an optimization to the initialization
      sequence that can improve boot time. During ACPI device
      initialization, the _STA method is now run if and only
      if the _INI method exists. The _STA method is used to
      determine if the device is present; An _INI can only be
      run if _STA returns present, but it is a waste of time to
      run the _STA method if the _INI does not exist. (Prototype
      and assistance from Dong Wei)
      Implemented use of the C99 uintptr_t for the pointer
      casting macros if it is available in the current
      compiler. Otherwise, the default (void *) cast is used
      as before.
      Fixed some possible memory leaks found within the
      execution path of the Break, Continue, If, and CreateField
      operators. (Valery Podrezov)
      Fixed a problem introduced in the 20051202 release where
      an exception is generated during method execution if a
      control method attempts to declare another method.
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  8. 04 Aug, 2005 1 commit
  9. 13 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>
  10. 11 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>
  11. 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!