1/******************************************************************************
2 *
3 * Module Name: utxface - External interfaces, miscellaneous utility functions
4 *
5 *****************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2012, Intel Corp.
12 * All rights reserved.
13 *
14 * 2. License
15 *
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
19 * property rights.
20 *
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
27 *
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
36 *
37 * The above copyright and patent license is granted only if the following
38 * conditions are met:
39 *
40 * 3. Conditions
41 *
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
53 *
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
64 * make.
65 *
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
70 * distribution.
71 *
72 * 3.4. Intel retains all right, title, and interest in and to the Original
73 * Intel Code.
74 *
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
79 *
80 * 4. Disclaimer and Export Compliance
81 *
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88 * PARTICULAR PURPOSE.
89 *
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97 * LIMITED REMEDY.
98 *
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
113 *
114 *****************************************************************************/
115
116
117#define __UTXFACE_C__
118
119#include "acpi.h"
120#include "accommon.h"
121#include "acdebug.h"
122
123#define _COMPONENT          ACPI_UTILITIES
124        ACPI_MODULE_NAME    ("utxface")
125
126
127/*******************************************************************************
128 *
129 * FUNCTION:    AcpiTerminate
130 *
131 * PARAMETERS:  None
132 *
133 * RETURN:      Status
134 *
135 * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources.
136 *
137 ******************************************************************************/
138
139ACPI_STATUS
140AcpiTerminate (
141    void)
142{
143    ACPI_STATUS         Status;
144
145
146    ACPI_FUNCTION_TRACE (AcpiTerminate);
147
148
149    /* Just exit if subsystem is already shutdown */
150
151    if (AcpiGbl_Shutdown)
152    {
153        ACPI_ERROR ((AE_INFO, "ACPI Subsystem is already terminated"));
154        return_ACPI_STATUS (AE_OK);
155    }
156
157    /* Subsystem appears active, go ahead and shut it down */
158
159    AcpiGbl_Shutdown = TRUE;
160    AcpiGbl_StartupFlags = 0;
161    ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Shutting down ACPI Subsystem\n"));
162
163    /* Terminate the AML Debugger if present */
164
165    ACPI_DEBUGGER_EXEC (AcpiGbl_DbTerminateThreads = TRUE);
166
167    /* Shutdown and free all resources */
168
169    AcpiUtSubsystemShutdown ();
170
171    /* Free the mutex objects */
172
173    AcpiUtMutexTerminate ();
174
175
176#ifdef ACPI_DEBUGGER
177
178    /* Shut down the debugger */
179
180    AcpiDbTerminate ();
181#endif
182
183    /* Now we can shutdown the OS-dependent layer */
184
185    Status = AcpiOsTerminate ();
186    return_ACPI_STATUS (Status);
187}
188
189ACPI_EXPORT_SYMBOL (AcpiTerminate)
190
191
192#ifndef ACPI_ASL_COMPILER
193/*******************************************************************************
194 *
195 * FUNCTION:    AcpiSubsystemStatus
196 *
197 * PARAMETERS:  None
198 *
199 * RETURN:      Status of the ACPI subsystem
200 *
201 * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
202 *              before making any other calls, to ensure the subsystem
203 *              initialized successfully.
204 *
205 ******************************************************************************/
206
207ACPI_STATUS
208AcpiSubsystemStatus (
209    void)
210{
211
212    if (AcpiGbl_StartupFlags & ACPI_INITIALIZED_OK)
213    {
214        return (AE_OK);
215    }
216    else
217    {
218        return (AE_ERROR);
219    }
220}
221
222ACPI_EXPORT_SYMBOL (AcpiSubsystemStatus)
223
224
225/*******************************************************************************
226 *
227 * FUNCTION:    AcpiGetSystemInfo
228 *
229 * PARAMETERS:  OutBuffer       - A buffer to receive the resources for the
230 *                                device
231 *
232 * RETURN:      Status          - the status of the call
233 *
234 * DESCRIPTION: This function is called to get information about the current
235 *              state of the ACPI subsystem. It will return system information
236 *              in the OutBuffer.
237 *
238 *              If the function fails an appropriate status will be returned
239 *              and the value of OutBuffer is undefined.
240 *
241 ******************************************************************************/
242
243ACPI_STATUS
244AcpiGetSystemInfo (
245    ACPI_BUFFER             *OutBuffer)
246{
247    ACPI_SYSTEM_INFO        *InfoPtr;
248    ACPI_STATUS             Status;
249
250
251    ACPI_FUNCTION_TRACE (AcpiGetSystemInfo);
252
253
254    /* Parameter validation */
255
256    Status = AcpiUtValidateBuffer (OutBuffer);
257    if (ACPI_FAILURE (Status))
258    {
259        return_ACPI_STATUS (Status);
260    }
261
262    /* Validate/Allocate/Clear caller buffer */
263
264    Status = AcpiUtInitializeBuffer (OutBuffer, sizeof (ACPI_SYSTEM_INFO));
265    if (ACPI_FAILURE (Status))
266    {
267        return_ACPI_STATUS (Status);
268    }
269
270    /*
271     * Populate the return buffer
272     */
273    InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer;
274
275    InfoPtr->AcpiCaVersion = ACPI_CA_VERSION;
276
277    /* System flags (ACPI capabilities) */
278
279    InfoPtr->Flags = ACPI_SYS_MODE_ACPI;
280
281    /* Timer resolution - 24 or 32 bits  */
282
283    if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
284    {
285        InfoPtr->TimerResolution = 24;
286    }
287    else
288    {
289        InfoPtr->TimerResolution = 32;
290    }
291
292    /* Clear the reserved fields */
293
294    InfoPtr->Reserved1 = 0;
295    InfoPtr->Reserved2 = 0;
296
297    /* Current debug levels */
298
299    InfoPtr->DebugLayer = AcpiDbgLayer;
300    InfoPtr->DebugLevel = AcpiDbgLevel;
301
302    return_ACPI_STATUS (AE_OK);
303}
304
305ACPI_EXPORT_SYMBOL (AcpiGetSystemInfo)
306
307
308/*******************************************************************************
309 *
310 * FUNCTION:    AcpiGetStatistics
311 *
312 * PARAMETERS:  Stats           - Where the statistics are returned
313 *
314 * RETURN:      Status          - the status of the call
315 *
316 * DESCRIPTION: Get the contents of the various system counters
317 *
318 ******************************************************************************/
319
320ACPI_STATUS
321AcpiGetStatistics (
322    ACPI_STATISTICS         *Stats)
323{
324    ACPI_FUNCTION_TRACE (AcpiGetStatistics);
325
326
327    /* Parameter validation */
328
329    if (!Stats)
330    {
331        return_ACPI_STATUS (AE_BAD_PARAMETER);
332    }
333
334    /* Various interrupt-based event counters */
335
336    Stats->SciCount = AcpiSciCount;
337    Stats->GpeCount = AcpiGpeCount;
338
339    ACPI_MEMCPY (Stats->FixedEventCount, AcpiFixedEventCount,
340        sizeof (AcpiFixedEventCount));
341
342
343    /* Other counters */
344
345    Stats->MethodCount = AcpiMethodCount;
346
347    return_ACPI_STATUS (AE_OK);
348}
349
350ACPI_EXPORT_SYMBOL (AcpiGetStatistics)
351
352
353/*****************************************************************************
354 *
355 * FUNCTION:    AcpiInstallInitializationHandler
356 *
357 * PARAMETERS:  Handler             - Callback procedure
358 *              Function            - Not (currently) used, see below
359 *
360 * RETURN:      Status
361 *
362 * DESCRIPTION: Install an initialization handler
363 *
364 * TBD: When a second function is added, must save the Function also.
365 *
366 ****************************************************************************/
367
368ACPI_STATUS
369AcpiInstallInitializationHandler (
370    ACPI_INIT_HANDLER       Handler,
371    UINT32                  Function)
372{
373
374    if (!Handler)
375    {
376        return (AE_BAD_PARAMETER);
377    }
378
379    if (AcpiGbl_InitHandler)
380    {
381        return (AE_ALREADY_EXISTS);
382    }
383
384    AcpiGbl_InitHandler = Handler;
385    return (AE_OK);
386}
387
388ACPI_EXPORT_SYMBOL (AcpiInstallInitializationHandler)
389
390
391/*****************************************************************************
392 *
393 * FUNCTION:    AcpiPurgeCachedObjects
394 *
395 * PARAMETERS:  None
396 *
397 * RETURN:      Status
398 *
399 * DESCRIPTION: Empty all caches (delete the cached objects)
400 *
401 ****************************************************************************/
402
403ACPI_STATUS
404AcpiPurgeCachedObjects (
405    void)
406{
407    ACPI_FUNCTION_TRACE (AcpiPurgeCachedObjects);
408
409
410    (void) AcpiOsPurgeCache (AcpiGbl_StateCache);
411    (void) AcpiOsPurgeCache (AcpiGbl_OperandCache);
412    (void) AcpiOsPurgeCache (AcpiGbl_PsNodeCache);
413    (void) AcpiOsPurgeCache (AcpiGbl_PsNodeExtCache);
414
415    return_ACPI_STATUS (AE_OK);
416}
417
418ACPI_EXPORT_SYMBOL (AcpiPurgeCachedObjects)
419
420
421/*****************************************************************************
422 *
423 * FUNCTION:    AcpiInstallInterface
424 *
425 * PARAMETERS:  InterfaceName       - The interface to install
426 *
427 * RETURN:      Status
428 *
429 * DESCRIPTION: Install an _OSI interface to the global list
430 *
431 ****************************************************************************/
432
433ACPI_STATUS
434AcpiInstallInterface (
435    ACPI_STRING             InterfaceName)
436{
437    ACPI_STATUS             Status;
438    ACPI_INTERFACE_INFO     *InterfaceInfo;
439
440
441    /* Parameter validation */
442
443    if (!InterfaceName || (ACPI_STRLEN (InterfaceName) == 0))
444    {
445        return (AE_BAD_PARAMETER);
446    }
447
448    (void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
449
450    /* Check if the interface name is already in the global list */
451
452    InterfaceInfo = AcpiUtGetInterface (InterfaceName);
453    if (InterfaceInfo)
454    {
455        /*
456         * The interface already exists in the list. This is OK if the
457         * interface has been marked invalid -- just clear the bit.
458         */
459        if (InterfaceInfo->Flags & ACPI_OSI_INVALID)
460        {
461            InterfaceInfo->Flags &= ~ACPI_OSI_INVALID;
462            Status = AE_OK;
463        }
464        else
465        {
466            Status = AE_ALREADY_EXISTS;
467        }
468    }
469    else
470    {
471        /* New interface name, install into the global list */
472
473        Status = AcpiUtInstallInterface (InterfaceName);
474    }
475
476    AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
477    return (Status);
478}
479
480ACPI_EXPORT_SYMBOL (AcpiInstallInterface)
481
482
483/*****************************************************************************
484 *
485 * FUNCTION:    AcpiRemoveInterface
486 *
487 * PARAMETERS:  InterfaceName       - The interface to remove
488 *
489 * RETURN:      Status
490 *
491 * DESCRIPTION: Remove an _OSI interface from the global list
492 *
493 ****************************************************************************/
494
495ACPI_STATUS
496AcpiRemoveInterface (
497    ACPI_STRING             InterfaceName)
498{
499    ACPI_STATUS             Status;
500
501
502    /* Parameter validation */
503
504    if (!InterfaceName || (ACPI_STRLEN (InterfaceName) == 0))
505    {
506        return (AE_BAD_PARAMETER);
507    }
508
509    (void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
510
511    Status = AcpiUtRemoveInterface (InterfaceName);
512
513    AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
514    return (Status);
515}
516
517ACPI_EXPORT_SYMBOL (AcpiRemoveInterface)
518
519
520/*****************************************************************************
521 *
522 * FUNCTION:    AcpiInstallInterfaceHandler
523 *
524 * PARAMETERS:  Handler             - The _OSI interface handler to install
525 *                                    NULL means "remove existing handler"
526 *
527 * RETURN:      Status
528 *
529 * DESCRIPTION: Install a handler for the predefined _OSI ACPI method.
530 *              invoked during execution of the internal implementation of
531 *              _OSI. A NULL handler simply removes any existing handler.
532 *
533 ****************************************************************************/
534
535ACPI_STATUS
536AcpiInstallInterfaceHandler (
537    ACPI_INTERFACE_HANDLER  Handler)
538{
539    ACPI_STATUS             Status = AE_OK;
540
541
542    (void) AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
543
544    if (Handler && AcpiGbl_InterfaceHandler)
545    {
546        Status = AE_ALREADY_EXISTS;
547    }
548    else
549    {
550        AcpiGbl_InterfaceHandler = Handler;
551    }
552
553    AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
554    return (Status);
555}
556
557ACPI_EXPORT_SYMBOL (AcpiInstallInterfaceHandler)
558
559
560/*****************************************************************************
561 *
562 * FUNCTION:    AcpiCheckAddressRange
563 *
564 * PARAMETERS:  SpaceId             - Address space ID
565 *              Address             - Start address
566 *              Length              - Length
567 *              Warn                - TRUE if warning on overlap desired
568 *
569 * RETURN:      Count of the number of conflicts detected.
570 *
571 * DESCRIPTION: Check if the input address range overlaps any of the
572 *              ASL operation region address ranges.
573 *
574 ****************************************************************************/
575
576UINT32
577AcpiCheckAddressRange (
578    ACPI_ADR_SPACE_TYPE     SpaceId,
579    ACPI_PHYSICAL_ADDRESS   Address,
580    ACPI_SIZE               Length,
581    BOOLEAN                 Warn)
582{
583    UINT32                  Overlaps;
584    ACPI_STATUS             Status;
585
586
587    Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
588    if (ACPI_FAILURE (Status))
589    {
590        return (0);
591    }
592
593    Overlaps = AcpiUtCheckAddressRange (SpaceId, Address,
594        (UINT32) Length, Warn);
595
596    (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
597    return (Overlaps);
598}
599
600ACPI_EXPORT_SYMBOL (AcpiCheckAddressRange)
601
602#endif /* !ACPI_ASL_COMPILER */
603
604
605/*******************************************************************************
606 *
607 * FUNCTION:    AcpiDecodePldBuffer
608 *
609 * PARAMETERS:  InBuffer            - Buffer returned by _PLD method
610 *              Length              - Length of the InBuffer
611 *              ReturnBuffer        - Where the decode buffer is returned
612 *
613 * RETURN:      Status and the decoded _PLD buffer. User must deallocate
614 *              the buffer via ACPI_FREE.
615 *
616 * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into
617 *              a local struct that is much more useful to an ACPI driver.
618 *
619 ******************************************************************************/
620
621ACPI_STATUS
622AcpiDecodePldBuffer (
623    UINT8                   *InBuffer,
624    ACPI_SIZE               Length,
625    ACPI_PLD_INFO           **ReturnBuffer)
626{
627    ACPI_PLD_INFO           *PldInfo;
628    UINT32                  *Buffer = ACPI_CAST_PTR (UINT32, InBuffer);
629    UINT32                  Dword;
630
631
632    /* Parameter validation */
633
634    if (!InBuffer || !ReturnBuffer || (Length < 16))
635    {
636        return (AE_BAD_PARAMETER);
637    }
638
639    PldInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PLD_INFO));
640    if (!PldInfo)
641    {
642        return (AE_NO_MEMORY);
643    }
644
645    /* First 32-bit DWord */
646
647    ACPI_MOVE_32_TO_32 (&Dword, &Buffer[0]);
648    PldInfo->Revision =             ACPI_PLD_GET_REVISION (&Dword);
649    PldInfo->IgnoreColor =          ACPI_PLD_GET_IGNORE_COLOR (&Dword);
650    PldInfo->Color =                ACPI_PLD_GET_COLOR (&Dword);
651
652    /* Second 32-bit DWord */
653
654    ACPI_MOVE_32_TO_32 (&Dword, &Buffer[1]);
655    PldInfo->Width =                ACPI_PLD_GET_WIDTH (&Dword);
656    PldInfo->Height =               ACPI_PLD_GET_HEIGHT(&Dword);
657
658    /* Third 32-bit DWord */
659
660    ACPI_MOVE_32_TO_32 (&Dword, &Buffer[2]);
661    PldInfo->UserVisible =          ACPI_PLD_GET_USER_VISIBLE (&Dword);
662    PldInfo->Dock =                 ACPI_PLD_GET_DOCK (&Dword);
663    PldInfo->Lid =                  ACPI_PLD_GET_LID (&Dword);
664    PldInfo->Panel =                ACPI_PLD_GET_PANEL (&Dword);
665    PldInfo->VerticalPosition =     ACPI_PLD_GET_VERTICAL (&Dword);
666    PldInfo->HorizontalPosition =   ACPI_PLD_GET_HORIZONTAL (&Dword);
667    PldInfo->Shape =                ACPI_PLD_GET_SHAPE (&Dword);
668    PldInfo->GroupOrientation =     ACPI_PLD_GET_ORIENTATION (&Dword);
669    PldInfo->GroupToken =           ACPI_PLD_GET_TOKEN (&Dword);
670    PldInfo->GroupPosition =        ACPI_PLD_GET_POSITION (&Dword);
671    PldInfo->Bay =                  ACPI_PLD_GET_BAY (&Dword);
672
673    /* Fourth 32-bit DWord */
674
675    ACPI_MOVE_32_TO_32 (&Dword, &Buffer[3]);
676    PldInfo->Ejectable =            ACPI_PLD_GET_EJECTABLE (&Dword);
677    PldInfo->OspmEjectRequired =    ACPI_PLD_GET_OSPM_EJECT (&Dword);
678    PldInfo->CabinetNumber =        ACPI_PLD_GET_CABINET (&Dword);
679    PldInfo->CardCageNumber =       ACPI_PLD_GET_CARD_CAGE (&Dword);
680    PldInfo->Reference =            ACPI_PLD_GET_REFERENCE (&Dword);
681    PldInfo->Rotation =             ACPI_PLD_GET_ROTATION (&Dword);
682    PldInfo->Order =                ACPI_PLD_GET_ORDER (&Dword);
683
684    if (Length >= ACPI_PLD_BUFFER_SIZE)
685    {
686        /* Fifth 32-bit DWord (Revision 2 of _PLD) */
687
688        ACPI_MOVE_32_TO_32 (&Dword, &Buffer[4]);
689        PldInfo->VerticalOffset =       ACPI_PLD_GET_VERT_OFFSET (&Dword);
690        PldInfo->HorizontalOffset =     ACPI_PLD_GET_HORIZ_OFFSET (&Dword);
691    }
692
693    *ReturnBuffer = PldInfo;
694    return (AE_OK);
695}
696
697ACPI_EXPORT_SYMBOL (AcpiDecodePldBuffer)
698