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 /******************************************************************************
  *
  * Module Name: utxface - External interfaces, miscellaneous utility functions
  *
  *****************************************************************************/
 
 /******************************************************************************
  *
  * 1. Copyright Notice
  *
  * Some or all of this work - Copyright (c) 1999 - 2024, Intel Corp.
  * All rights reserved.
  *
  * 2. License
  *
  * 2.1. This is your license from Intel Corp. under its intellectual property
  * rights. You may have additional license terms from the party that provided
  * you this software, covering your right to use that party's intellectual
  * property rights.
  *
  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  * copy of the source code appearing in this file ("Covered Code") an
  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  * base code distributed originally by Intel ("Original Intel Code") to copy,
  * make derivatives, distribute, use and display any portion of the Covered
  * Code in any form, with the right to sublicense such rights; and
  *
  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  * license (with the right to sublicense), under only those claims of Intel
  * patents that are infringed by the Original Intel Code, to make, use, sell,
  * offer to sell, and import the Covered Code and derivative works thereof
  * solely to the minimum extent necessary to exercise the above copyright
  * license, and in no event shall the patent license extend to any additions
  * to or modifications of the Original Intel Code. No other license or right
  * is granted directly or by implication, estoppel or otherwise;
  *
  * The above copyright and patent license is granted only if the following
  * conditions are met:
  *
  * 3. Conditions
  *
  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  * Redistribution of source code of any substantial portion of the Covered
  * Code or modification with rights to further distribute source must include
  * the above Copyright Notice, the above License, this list of Conditions,
  * and the following Disclaimer and Export Compliance provision. In addition,
  * Licensee must cause all Covered Code to which Licensee contributes to
  * contain a file documenting the changes Licensee made to create that Covered
  * Code and the date of any change. Licensee must include in that file the
  * documentation of any changes made by any predecessor Licensee. Licensee
  * must include a prominent statement that the modification is derived,
  * directly or indirectly, from Original Intel Code.
  *
  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  * Redistribution of source code of any substantial portion of the Covered
  * Code or modification without rights to further distribute source must
  * include the following Disclaimer and Export Compliance provision in the
  * documentation and/or other materials provided with distribution. In
  * addition, Licensee may not authorize further sublicense of source of any
  * portion of the Covered Code, and must include terms to the effect that the
  * license from Licensee to its licensee is limited to the intellectual
  * property embodied in the software Licensee provides to its licensee, and
  * not to intellectual property embodied in modifications its licensee may
  * make.
  *
  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  * substantial portion of the Covered Code or modification must reproduce the
  * above Copyright Notice, and the following Disclaimer and Export Compliance
  * provision in the documentation and/or other materials provided with the
  * distribution.
  *
  * 3.4. Intel retains all right, title, and interest in and to the Original
  * Intel Code.
  *
  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  * Intel shall be used in advertising or otherwise to promote the sale, use or
  * other dealings in products derived from or relating to the Covered Code
  * without prior written authorization from Intel.
  *
  * 4. Disclaimer and Export Compliance
  *
  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  * PARTICULAR PURPOSE.
  *
  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  * LIMITED REMEDY.
  *
  * 4.3. Licensee shall not export, either directly or indirectly, any of this
  * software or system incorporating such software without first obtaining any
  * required license or other approval from the U. S. Department of Commerce or
  * any other agency or department of the United States Government. In the
  * event Licensee exports any such software from the United States or
  * re-exports any such software from a foreign destination, Licensee shall
  * ensure that the distribution and export/re-export of the software is in
  * compliance with all laws, regulations, orders, or other restrictions of the
  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
  * any of its subsidiaries will export/re-export any technical data, process,
  * software, or service, directly or indirectly, to any country for which the
  * United States government or any agency thereof requires an export license,
  * other governmental approval, or letter of assurance, without first obtaining
  * such license, approval or letter.
  *
  *****************************************************************************
  *
  * Alternatively, you may choose to be licensed under the terms of the
  * following license:
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions, and the following disclaimer,
  *    without modification.
  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  *    substantially similar to the "NO WARRANTY" disclaimer below
  *    ("Disclaimer") and any redistribution must be conditioned upon
  *    including a substantially similar Disclaimer requirement for further
  *    binary redistribution.
  * 3. Neither the names of the above-listed copyright holders nor the names
  *    of any contributors may be used to endorse or promote products derived
  *    from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Alternatively, you may choose to be licensed under the terms of the
  * GNU General Public License ("GPL") version 2 as published by the Free
  * Software Foundation.
  *
  *****************************************************************************/
 
 #define EXPORT_ACPI_INTERFACES
 
 #include "acpi.h"
 #include "accommon.h"
 #include "acdebug.h"
 
 #define _COMPONENT          ACPI_UTILITIES
         ACPI_MODULE_NAME    ("utxface")
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiTerminate
  *
  * PARAMETERS:  None
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources.
  *
  ******************************************************************************/
 
 ACPI_STATUS ACPI_INIT_FUNCTION
 AcpiTerminate (
     void)
 {
     ACPI_STATUS         Status;
 
 
     ACPI_FUNCTION_TRACE (AcpiTerminate);
 
 
     /* Shutdown and free all resources */
 
     AcpiUtSubsystemShutdown ();
 
     /* Free the mutex objects */
 
     AcpiUtMutexTerminate ();
 
     /* Now we can shutdown the OS-dependent layer */
 
     Status = AcpiOsTerminate ();
     return_ACPI_STATUS (Status);
 }
 
 ACPI_EXPORT_SYMBOL_INIT (AcpiTerminate)
 
 
 #ifndef ACPI_ASL_COMPILER
 /*******************************************************************************
  *
  * FUNCTION:    AcpiSubsystemStatus
  *
  * PARAMETERS:  None
  *
  * RETURN:      Status of the ACPI subsystem
  *
  * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
  *              before making any other calls, to ensure the subsystem
  *              initialized successfully.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiSubsystemStatus (
     void)
 {
 
     if (AcpiGbl_StartupFlags & ACPI_INITIALIZED_OK)
     {
         return (AE_OK);
     }
     else
     {
         return (AE_ERROR);
     }
 }
 
 ACPI_EXPORT_SYMBOL (AcpiSubsystemStatus)
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiGetSystemInfo
  *
  * PARAMETERS:  OutBuffer       - A buffer to receive the resources for the
  *                                device
  *
  * RETURN:      Status          - the status of the call
  *
  * DESCRIPTION: This function is called to get information about the current
  *              state of the ACPI subsystem. It will return system information
  *              in the OutBuffer.
  *
  *              If the function fails an appropriate status will be returned
  *              and the value of OutBuffer is undefined.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiGetSystemInfo (
     ACPI_BUFFER             *OutBuffer)
 {
     ACPI_SYSTEM_INFO        *InfoPtr;
     ACPI_STATUS             Status;
 
 
     ACPI_FUNCTION_TRACE (AcpiGetSystemInfo);
 
 
     /* Parameter validation */
 
     Status = AcpiUtValidateBuffer (OutBuffer);
     if (ACPI_FAILURE (Status))
     {
         return_ACPI_STATUS (Status);
     }
 
     /* Validate/Allocate/Clear caller buffer */
 
     Status = AcpiUtInitializeBuffer (OutBuffer, sizeof (ACPI_SYSTEM_INFO));
     if (ACPI_FAILURE (Status))
     {
         return_ACPI_STATUS (Status);
     }
 
     /*
      * Populate the return buffer
      */
     InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer;
     InfoPtr->AcpiCaVersion = ACPI_CA_VERSION;
 
     /* System flags (ACPI capabilities) */
 
     InfoPtr->Flags = ACPI_SYS_MODE_ACPI;
 
     /* Timer resolution - 24 or 32 bits  */
 
     if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
     {
         InfoPtr->TimerResolution = 24;
     }
     else
     {
         InfoPtr->TimerResolution = 32;
     }
 
     /* Clear the reserved fields */
 
     InfoPtr->Reserved1 = 0;
     InfoPtr->Reserved2 = 0;
 
     /* Current debug levels */
 
     InfoPtr->DebugLayer = AcpiDbgLayer;
     InfoPtr->DebugLevel = AcpiDbgLevel;
 
     return_ACPI_STATUS (AE_OK);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiGetSystemInfo)
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiGetStatistics
  *
  * PARAMETERS:  Stats           - Where the statistics are returned
  *
  * RETURN:      Status          - the status of the call
  *
  * DESCRIPTION: Get the contents of the various system counters
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiGetStatistics (
     ACPI_STATISTICS         *Stats)
 {
     ACPI_FUNCTION_TRACE (AcpiGetStatistics);
 
 
     /* Parameter validation */
 
     if (!Stats)
     {
         return_ACPI_STATUS (AE_BAD_PARAMETER);
     }
 
     /* Various interrupt-based event counters */
 
     Stats->SciCount = AcpiSciCount;
     Stats->GpeCount = AcpiGpeCount;
 
     memcpy (Stats->FixedEventCount, AcpiFixedEventCount,
         sizeof (AcpiFixedEventCount));
 
     /* Other counters */
 
     Stats->MethodCount = AcpiMethodCount;
     return_ACPI_STATUS (AE_OK);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiGetStatistics)
 
 
 /*****************************************************************************
  *
  * FUNCTION:    AcpiInstallInitializationHandler
  *
  * PARAMETERS:  Handler             - Callback procedure
  *              Function            - Not (currently) used, see below
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Install an initialization handler
  *
  * TBD: When a second function is added, must save the Function also.
  *
  ****************************************************************************/
 
 ACPI_STATUS
 AcpiInstallInitializationHandler (
     ACPI_INIT_HANDLER       Handler,
     UINT32                  Function)
 {
 
     if (!Handler)
     {
         return (AE_BAD_PARAMETER);
     }
 
     if (AcpiGbl_InitHandler)
     {
         return (AE_ALREADY_EXISTS);
     }
 
     AcpiGbl_InitHandler = Handler;
     return (AE_OK);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiInstallInitializationHandler)
 
 
 /*****************************************************************************
  *
  * FUNCTION:    AcpiPurgeCachedObjects
  *
  * PARAMETERS:  None
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Empty all caches (delete the cached objects)
  *
  ****************************************************************************/
 
 ACPI_STATUS
 AcpiPurgeCachedObjects (
     void)
 {
     ACPI_FUNCTION_TRACE (AcpiPurgeCachedObjects);
 
 
     (void) AcpiOsPurgeCache (AcpiGbl_StateCache);
     (void) AcpiOsPurgeCache (AcpiGbl_OperandCache);
     (void) AcpiOsPurgeCache (AcpiGbl_PsNodeCache);
     (void) AcpiOsPurgeCache (AcpiGbl_PsNodeExtCache);
 
     return_ACPI_STATUS (AE_OK);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiPurgeCachedObjects)
 
 
 /*****************************************************************************
  *
  * FUNCTION:    AcpiInstallInterface
  *
  * PARAMETERS:  InterfaceName       - The interface to install
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Install an _OSI interface to the global list
  *
  ****************************************************************************/
 
 ACPI_STATUS
 AcpiInstallInterface (
     ACPI_STRING             InterfaceName)
 {
     ACPI_STATUS             Status;
     ACPI_INTERFACE_INFO     *InterfaceInfo;
 
 
     /* Parameter validation */
 
     if (!InterfaceName || (strlen (InterfaceName) == 0))
     {
         return (AE_BAD_PARAMETER);
     }
 
     Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
     if (ACPI_FAILURE (Status))
     {
         return (Status);
     }
 
     /* Check if the interface name is already in the global list */
 
     InterfaceInfo = AcpiUtGetInterface (InterfaceName);
     if (InterfaceInfo)
     {
         /*
          * The interface already exists in the list. This is OK if the
          * interface has been marked invalid -- just clear the bit.
          */
         if (InterfaceInfo->Flags & ACPI_OSI_INVALID)
         {
             InterfaceInfo->Flags &= ~ACPI_OSI_INVALID;
             Status = AE_OK;
         }
         else
         {
             Status = AE_ALREADY_EXISTS;
         }
     }
     else
     {
         /* New interface name, install into the global list */
 
         Status = AcpiUtInstallInterface (InterfaceName);
     }
 
     AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
     return (Status);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiInstallInterface)
 
 
 /*****************************************************************************
  *
  * FUNCTION:    AcpiRemoveInterface
  *
  * PARAMETERS:  InterfaceName       - The interface to remove
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Remove an _OSI interface from the global list
  *
  ****************************************************************************/
 
 ACPI_STATUS
 AcpiRemoveInterface (
     ACPI_STRING             InterfaceName)
 {
     ACPI_STATUS             Status;
 
 
     /* Parameter validation */
 
     if (!InterfaceName || (strlen (InterfaceName) == 0))
     {
         return (AE_BAD_PARAMETER);
     }
 
     Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
     if (ACPI_FAILURE (Status))
     {
         return (Status);
     }
 
     Status = AcpiUtRemoveInterface (InterfaceName);
 
     AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
     return (Status);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiRemoveInterface)
 
 
 /*****************************************************************************
  *
  * FUNCTION:    AcpiInstallInterfaceHandler
  *
  * PARAMETERS:  Handler             - The _OSI interface handler to install
  *                                    NULL means "remove existing handler"
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Install a handler for the predefined _OSI ACPI method.
  *              invoked during execution of the internal implementation of
  *              _OSI. A NULL handler simply removes any existing handler.
  *
  ****************************************************************************/
 
 ACPI_STATUS
 AcpiInstallInterfaceHandler (
     ACPI_INTERFACE_HANDLER  Handler)
 {
     ACPI_STATUS             Status;
 
 
     Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
     if (ACPI_FAILURE (Status))
     {
         return (Status);
     }
 
     if (Handler && AcpiGbl_InterfaceHandler)
     {
         Status = AE_ALREADY_EXISTS;
     }
     else
     {
         AcpiGbl_InterfaceHandler = Handler;
     }
 
     AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
     return (Status);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiInstallInterfaceHandler)
 
 
 /*****************************************************************************
  *
  * FUNCTION:    AcpiUpdateInterfaces
  *
  * PARAMETERS:  Action              - Actions to be performed during the
  *                                    update
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
  *              string or/and feature group strings.
  *
  ****************************************************************************/
 
 ACPI_STATUS
 AcpiUpdateInterfaces (
     UINT8                   Action)
 {
     ACPI_STATUS             Status;
 
 
     Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
     if (ACPI_FAILURE (Status))
     {
         return (Status);
     }
 
     Status = AcpiUtUpdateInterfaces (Action);
 
     AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
     return (Status);
 }
 
 
 /*****************************************************************************
  *
  * FUNCTION:    AcpiCheckAddressRange
  *
  * PARAMETERS:  SpaceId             - Address space ID
  *              Address             - Start address
  *              Length              - Length
  *              Warn                - TRUE if warning on overlap desired
  *
  * RETURN:      Count of the number of conflicts detected.
  *
  * DESCRIPTION: Check if the input address range overlaps any of the
  *              ASL operation region address ranges.
  *
  ****************************************************************************/
 
 UINT32
 AcpiCheckAddressRange (
     ACPI_ADR_SPACE_TYPE     SpaceId,
     ACPI_PHYSICAL_ADDRESS   Address,
     ACPI_SIZE               Length,
     BOOLEAN                 Warn)
 {
     UINT32                  Overlaps;
     ACPI_STATUS             Status;
 
 
     Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
     if (ACPI_FAILURE (Status))
     {
         return (0);
     }
 
     Overlaps = AcpiUtCheckAddressRange (SpaceId, Address,
         (UINT32) Length, Warn);
 
     (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
     return (Overlaps);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiCheckAddressRange)
 
 #endif /* !ACPI_ASL_COMPILER */
 
 
 /*******************************************************************************
  *
  * FUNCTION:    AcpiDecodePldBuffer
  *
  * PARAMETERS:  InBuffer            - Buffer returned by _PLD method
  *              Length              - Length of the InBuffer
  *              ReturnBuffer        - Where the decode buffer is returned
  *
  * RETURN:      Status and the decoded _PLD buffer. User must deallocate
  *              the buffer via ACPI_FREE.
  *
  * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into
  *              a local struct that is much more useful to an ACPI driver.
  *
  ******************************************************************************/
 
 ACPI_STATUS
 AcpiDecodePldBuffer (
     UINT8                   *InBuffer,
     ACPI_SIZE               Length,
     ACPI_PLD_INFO           **ReturnBuffer)
 {
     ACPI_PLD_INFO           *PldInfo;
     UINT32                  *Buffer = ACPI_CAST_PTR (UINT32, InBuffer);
     UINT32                  Dword;
 
 
     /* Parameter validation */
 
     if (!InBuffer || !ReturnBuffer || (Length < ACPI_PLD_REV1_BUFFER_SIZE))
     {
         return (AE_BAD_PARAMETER);
     }
 
     PldInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PLD_INFO));
     if (!PldInfo)
     {
         return (AE_NO_MEMORY);
     }
 
     /* First 32-bit DWord */
 
     ACPI_MOVE_32_TO_32 (&Dword, &Buffer[0]);
     PldInfo->Revision =             ACPI_PLD_GET_REVISION (&Dword);
     PldInfo->IgnoreColor =          ACPI_PLD_GET_IGNORE_COLOR (&Dword);
     PldInfo->Red =                  ACPI_PLD_GET_RED (&Dword);
     PldInfo->Green =                ACPI_PLD_GET_GREEN (&Dword);
     PldInfo->Blue =                 ACPI_PLD_GET_BLUE (&Dword);
 
     /* Second 32-bit DWord */
 
     ACPI_MOVE_32_TO_32 (&Dword, &Buffer[1]);
     PldInfo->Width =                ACPI_PLD_GET_WIDTH (&Dword);
     PldInfo->Height =               ACPI_PLD_GET_HEIGHT(&Dword);
 
     /* Third 32-bit DWord */
 
     ACPI_MOVE_32_TO_32 (&Dword, &Buffer[2]);
     PldInfo->UserVisible =          ACPI_PLD_GET_USER_VISIBLE (&Dword);
     PldInfo->Dock =                 ACPI_PLD_GET_DOCK (&Dword);
     PldInfo->Lid =                  ACPI_PLD_GET_LID (&Dword);
     PldInfo->Panel =                ACPI_PLD_GET_PANEL (&Dword);
     PldInfo->VerticalPosition =     ACPI_PLD_GET_VERTICAL (&Dword);
     PldInfo->HorizontalPosition =   ACPI_PLD_GET_HORIZONTAL (&Dword);
     PldInfo->Shape =                ACPI_PLD_GET_SHAPE (&Dword);
     PldInfo->GroupOrientation =     ACPI_PLD_GET_ORIENTATION (&Dword);
     PldInfo->GroupToken =           ACPI_PLD_GET_TOKEN (&Dword);
     PldInfo->GroupPosition =        ACPI_PLD_GET_POSITION (&Dword);
     PldInfo->Bay =                  ACPI_PLD_GET_BAY (&Dword);
 
     /* Fourth 32-bit DWord */
 
     ACPI_MOVE_32_TO_32 (&Dword, &Buffer[3]);
     PldInfo->Ejectable =            ACPI_PLD_GET_EJECTABLE (&Dword);
     PldInfo->OspmEjectRequired =    ACPI_PLD_GET_OSPM_EJECT (&Dword);
     PldInfo->CabinetNumber =        ACPI_PLD_GET_CABINET (&Dword);
     PldInfo->CardCageNumber =       ACPI_PLD_GET_CARD_CAGE (&Dword);
     PldInfo->Reference =            ACPI_PLD_GET_REFERENCE (&Dword);
     PldInfo->Rotation =             ACPI_PLD_GET_ROTATION (&Dword);
     PldInfo->Order =                ACPI_PLD_GET_ORDER (&Dword);
 
     if (Length >= ACPI_PLD_REV2_BUFFER_SIZE)
     {
         /* Fifth 32-bit DWord (Revision 2 of _PLD) */
 
         ACPI_MOVE_32_TO_32 (&Dword, &Buffer[4]);
         PldInfo->VerticalOffset =       ACPI_PLD_GET_VERT_OFFSET (&Dword);
         PldInfo->HorizontalOffset =     ACPI_PLD_GET_HORIZ_OFFSET (&Dword);
     }
 
     *ReturnBuffer = PldInfo;
     return (AE_OK);
 }
 
 ACPI_EXPORT_SYMBOL (AcpiDecodePldBuffer)

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