1. 10 Oct, 2006 1 commit
  2. 09 Jul, 2006 2 commits
    • Len Brown's avatar
      ACPI: acpi_os_get_thread_id() returns current · ab8aa06a
      Len Brown authored
      Linux mutexes and the debug code that that reference
      acpi_os_get_thread_id() are happy with 0.
      But the AML mutexes in exmutex.c expect a unique non-zero
      number for each thread - as they track this thread_id
      to permit the mutex re-entrancy defined by the ACPI spec.
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    • 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>
  3. 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>
  4. 14 Jun, 2006 4 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 20060512 · 958dd242
      Bob Moore authored
      Replaced the acpi_os_queue_for_execution() with a new
      interface named acpi_os_execute(). The major difference is
      that the new interface does not have a Priority parameter,
      this appeared to be useless and has been replaced by
      a Type parameter. The Type tells the OS what type of
      execution is being requested, such as global lock handler,
      notify handler, GPE handler, etc. This allows the host
      to queue and execute the request as appropriate for the
      request type, possibly using different work queues and
      different priorities for the various request types. This
      enables fixes for multithreading deadlock problems such as
      (Alexey Starikovskiy and Bob Moore)
      Fixed a possible memory leak associated with the
      support for the so-called "implicit return" ACPI
      extension. Reported by FreeBSD  (Fiodor Suietov)
      Fixed a problem with the Load() operator where a table
      load from an operation region could overwrite an internal
      table buffer by up to 7 bytes and cause alignment faults
      on IPF systems. (With assistance from Luming Yu)
      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>
    • Bob Moore's avatar
      ACPI: ACPICA 20060331 · 793c2388
      Bob Moore authored
      Implemented header file support for the following
      additional ACPI tables: ASF!, BOOT, CPEP, DBGP, MCFG, SPCR,
      SPMI, TCPA, and WDRT. With this support, all current and
      known ACPI tables are now defined in the ACPICA headers and
      are available for use by device drivers and other software.
      Implemented support to allow tables that contain ACPI
      names with invalid characters to be loaded. Previously,
      this would cause the table load to fail, but since
      there are several known cases of such tables on
      existing machines, this change was made to enable
      ACPI support for them. Also, this matches the
      behavior of the Microsoft ACPI implementation.
      Fixed a couple regressions introduced during the memory
      optimization in the 20060317 release. The namespace
      node definition required additional reorganization and
      an internal datatype that had been changed to 8-bit was
      restored to 32-bit. (Valery Podrezov)
      Fixed a problem where a null pointer passed to
      acpi_ut_delete_generic_state() could be passed through
      to acpi_os_release_object which is unexpected. Such
      null pointers are now trapped and ignored, matching
      the behavior of the previous implementation before the
      deployment of acpi_os_release_object().  (Valery Podrezov,
      Fiodor Suietov)
      Fixed a memory mapping leak during the deletion of
      a SystemMemory operation region where a cached memory
      mapping was not deleted. This became a noticeable problem
      for operation regions that are defined within frequently
      used control methods. (Dana Meyers)
      Reorganized the ACPI table header files into two main
      files: one for the ACPI tables consumed by the ACPICA core,
      and another for the miscellaneous ACPI tables that are
      consumed by the drivers and other software. The various
      FADT definitions were merged into one common section and
      three different tables (ACPI 1.0, 1.0+, and 2.0)
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  5. 13 Jun, 2006 1 commit
    • Bob Moore's avatar
      [ACPI] ACPICA 20060317 · 61686124
      Bob Moore authored
      Implemented the use of a cache object for all internal
      namespace nodes. Since there are about 1000 static nodes
      in a typical system, this will decrease memory use for
      cache implementations that minimize per-allocation overhead
      (such as a slab allocator.)
      Removed the reference count mechanism for internal
      namespace nodes, since it was deemed unnecessary. This
      reduces the size of each namespace node by about 5%-10%
      on all platforms. Nodes are now 20 bytes for the 32-bit
      case, and 32 bytes for the 64-bit case.
      Optimized several internal data structures to reduce
      object size on 64-bit platforms by packing data within
      the 64-bit alignment. This includes the frequently used
      ACPI_OPERAND_OBJECT, of which there can be ~1000 static
      instances corresponding to the namespace objects.
      Added two new strings for the predefined _OSI method:
      "Windows 2001.1 SP1" and "Windows 2006".
      Split the allocation tracking mechanism out to a separate
      file, from utalloc.c to uttrack.c. This mechanism appears
      to be only useful for application-level code. Kernels may
      wish to not include uttrack.c in distributions.
      Removed all remnants of the obsolete ACPI_REPORT_* macros
      and the associated code. (These macros have been replaced
      by the ACPI_ERROR and ACPI_WARNING macros.)
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  6. 31 Mar, 2006 1 commit
    • Bob Moore's avatar
      ACPI: ACPICA 20060310 · 8313524a
      Bob Moore authored
      Tagged all external interfaces to the subsystem with the
      new ACPI_EXPORT_SYMBOL macro. This macro can be defined
      as necessary to assist kernel integration. For Linux,
      the macro resolves to the EXPORT_SYMBOL macro. The default
      definition is NULL.
      Added the ACPI_THREAD_ID type for the return value from
      acpi_os_get_thread_id(). This allows the host to define this
      as necessary to simplify kernel integration. The default
      definition is ACPI_NATIVE_UINT.
      Valery Podrezov fixed two interpreter problems related
      to error processing, the deletion of objects, and placing
      invalid pointers onto the internal operator result stack.
      Increased the reference count threshold where a warning is
      emitted for large reference counts in order to eliminate
      unnecessary warnings on systems with large namespaces
      (especially 64-bit.) Increased the value from 0x400
      to 0x800.
      Due to universal disagreement as to the meaning of the
      'c' in the calloc() function, the ACPI_MEM_CALLOCATE
      macro has been renamed to ACPI_ALLOCATE_ZEROED so that the
      purpose of the interface is 'clear'. ACPI_MEM_ALLOCATE and
      ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and ACPI_FREE.
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  7. 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>
  8. 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>
  9. 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>
  10. 09 Dec, 2005 2 commits
    • 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>
    • Bob Moore's avatar
      [ACPI] ACPICA 20050930 · 50eca3eb
      Bob Moore authored
      Completed a major overhaul of the Resource Manager code -
      specifically, optimizations in the area of the AML/internal
      resource conversion code. The code has been optimized to
      simplify and eliminate duplicated code, CPU stack use has
      been decreased by optimizing function parameters and local
      variables, and naming conventions across the manager have
      been standardized for clarity and ease of maintenance (this
      includes function, parameter, variable, and struct/typedef
      All Resource Manager dispatch and information tables have
      been moved to a single location for clarity and ease of
      maintenance. One new file was created, named "rsinfo.c".
      The ACPI return macros (return_ACPI_STATUS, etc.) have
      been modified to guarantee that the argument is
      not evaluated twice, making them less prone to macro
      side-effects. However, since there exists the possibility
      of additional stack use if a particular compiler cannot
      optimize them (such as in the debug generation case),
      the original macros are optionally available.  Note that
      some invocations of the return_VALUE macro may now cause
      size mismatch warnings; the return_UINT8 and return_UINT32
      macros are provided to eliminate these. (From Randy Dunlap)
      Implemented a new mechanism to enable debug tracing for
      individual control methods. A new external interface,
      acpi_debug_trace(), is provided to enable this mechanism. The
      intent is to allow the host OS to easily enable and disable
      tracing for problematic control methods. This interface
      can be easily exposed to a user or debugger interface if
      desired. See the file psxface.c for details.
      acpi_ut_callocate() will now return a valid pointer if a
      length of zero is specified - a length of one is used
      and a warning is issued. This matches the behavior of
      Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  11. 21 Sep, 2005 1 commit
    • Robert Moore's avatar
      [ACPI] ACPICA 20050916 · bda663d3
      Robert Moore authored
      Fixed a problem within the Resource Manager where
      support for the Generic Register descriptor was not fully
      implemented.  This descriptor is now fully recognized,
      parsed, disassembled, and displayed.
      Restructured the Resource Manager code to utilize
      table-driven dispatch and lookup, eliminating many of the
      large switch() statements.  This reduces overall subsystem
      code size and code complexity.  Affects the resource parsing
      and construction, disassembly, and debug dump output.
      Cleaned up and restructured the debug dump output for all
      resource descriptors.  Improved readability of the output
      and reduced code size.
      Fixed a problem where changes to internal data structures
      caused the optional ACPI_MUTEX_DEBUG code to fail
      compilation if specified.
      Signed-off-by: default avatarRobert Moore <Robert.Moore@intel.com>
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  12. 04 Aug, 2005 1 commit
  13. 13 Jul, 2005 3 commits
    • Robert Moore's avatar
      ACPICA 20050708 from Bob Moore <robert.moore@intel.com> · f9f4601f
      Robert Moore authored
      The use of the CPU stack in the debug version of the
      subsystem has been considerably reduced.  Previously, a
      debug structure was declared in every function that used
      the debug macros.  This structure has been removed in
      favor of declaring the individual elements as parameters
      to the debug functions.  This reduces the cumulative stack
      use during nested execution of ACPI function calls at the
      cost of a small increase in the code size of the debug
      version of the subsystem.  With assistance from Alexey
      Starikovskiy and Len Brown.
      Added the ACPI_GET_FUNCTION_NAME macro to enable the
      compiler-dependent headers to define a macro that will
      return the current function name at runtime (such as
      __FUNCTION__ or _func_, etc.) The function name is used
      by the debug trace output.  If ACPI_GET_FUNCTION_NAME
      is not defined in the compiler-dependent header, the
      function name is saved on the CPU stack (one pointer per
      function.) This mechanism is used because apparently there
      exists no standard ANSI-C defined macro that that returns
      the function name.
      Alexey Starikovskiy redesigned and reimplemented the
      "Owner ID" mechanism used to track namespace objects
      created/deleted by ACPI tables and control method
      execution.  A bitmap is now used to allocate and free the
      IDs, thus solving the wraparound problem present in the
      previous implementation.  The size of the namespace node
      descriptor was reduced by 2 bytes as a result.
      Removed the UINT32_BIT and UINT16_BIT types that were used
      for the bitfield flag definitions within the headers for
      the predefined ACPI tables.  These have been replaced by
      UINT8_BIT in order to increase the code portability of
      the subsystem.  If the use of UINT8 remains a problem,
      we may be forced to eliminate bitfields entirely because
      of a lack of portability.
      Alexey Starikovksiy enhanced the performance of
      acpi_ut_update_object_reference.  This is a frequently used
      function and this improvement increases the performance
      of the entire subsystem.
      Alexey Starikovskiy fixed several possible memory leaks
      and the inverse - premature object deletion.
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
    • 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>
    • Robert Moore's avatar
      ACPICA from Bob Moore <robert.moore@intel.com> · 6f42ccf2
      Robert Moore authored
      Implemented support for PCI Express root bridges
      -- added support for device PNP0A08 in the root
      bridge search within AcpiEvPciConfigRegionSetup.
      The interpreter now automatically truncates incoming
      64-bit constants to 32 bits if currently executing out
      of a 32-bit ACPI table (Revision < 2). This also affects
      the iASL compiler constant folding. (Note: as per below,
      the iASL compiler no longer allows 64-bit constants within
      32-bit tables.)
      Fixed a problem where string and buffer objects with
      "static" pointers (pointers to initialization data within
      an ACPI table) were not handled consistently. The internal
      object copy operation now always copies the data to a newly
      allocated buffer, regardless of whether the source object
      is static or not.
      Fixed a problem with the FromBCD operator where an
      implicit result conversion was improperly performed while
      storing the result to the target operand. Since this is an
      "explicit conversion" operator, the implicit conversion
      should never be performed on the output.
      Fixed a problem with the CopyObject operator where a copy
      to an existing named object did not always completely
      overwrite the existing object stored at name. Specifically,
      a buffer-to-buffer copy did not delete the existing buffer.
      Replaced "interrupt_level" with "interrupt_number" in all
      GPE interfaces and structs for consistency.
      Signed-off-by: default avatarLen Brown <len.brown@intel.com>
  14. 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>
  15. 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!