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 - 2018, 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 * Alternatively, you may choose to be licensed under the terms of the
117 * following license:
118 *
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
121 * are met:
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
133 *
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145 *
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
149 *
150 *****************************************************************************/
151
152 #define EXPORT_ACPI_INTERFACES
153
154 #include "acpi.h"
155 #include "accommon.h"
156 #include "acdebug.h"
157
158 #define _COMPONENT ACPI_UTILITIES
159 ACPI_MODULE_NAME ("utxface")
160
161
162 /*******************************************************************************
163 *
164 * FUNCTION: AcpiTerminate
165 *
166 * PARAMETERS: None
167 *
168 * RETURN: Status
169 *
170 * DESCRIPTION: Shutdown the ACPICA subsystem and release all resources.
171 *
172 ******************************************************************************/
173
174 ACPI_STATUS ACPI_INIT_FUNCTION
AcpiTerminate(void)175 AcpiTerminate (
176 void)
177 {
178 ACPI_STATUS Status;
179
180
181 ACPI_FUNCTION_TRACE (AcpiTerminate);
182
183
184 /* Shutdown and free all resources */
185
186 AcpiUtSubsystemShutdown ();
187
188 /* Free the mutex objects */
189
190 AcpiUtMutexTerminate ();
191
192 /* Now we can shutdown the OS-dependent layer */
193
194 Status = AcpiOsTerminate ();
195 return_ACPI_STATUS (Status);
196 }
197
ACPI_EXPORT_SYMBOL_INIT(AcpiTerminate)198 ACPI_EXPORT_SYMBOL_INIT (AcpiTerminate)
199
200
201 #ifndef ACPI_ASL_COMPILER
202 /*******************************************************************************
203 *
204 * FUNCTION: AcpiSubsystemStatus
205 *
206 * PARAMETERS: None
207 *
208 * RETURN: Status of the ACPI subsystem
209 *
210 * DESCRIPTION: Other drivers that use the ACPI subsystem should call this
211 * before making any other calls, to ensure the subsystem
212 * initialized successfully.
213 *
214 ******************************************************************************/
215
216 ACPI_STATUS
217 AcpiSubsystemStatus (
218 void)
219 {
220
221 if (AcpiGbl_StartupFlags & ACPI_INITIALIZED_OK)
222 {
223 return (AE_OK);
224 }
225 else
226 {
227 return (AE_ERROR);
228 }
229 }
230
ACPI_EXPORT_SYMBOL(AcpiSubsystemStatus)231 ACPI_EXPORT_SYMBOL (AcpiSubsystemStatus)
232
233
234 /*******************************************************************************
235 *
236 * FUNCTION: AcpiGetSystemInfo
237 *
238 * PARAMETERS: OutBuffer - A buffer to receive the resources for the
239 * device
240 *
241 * RETURN: Status - the status of the call
242 *
243 * DESCRIPTION: This function is called to get information about the current
244 * state of the ACPI subsystem. It will return system information
245 * in the OutBuffer.
246 *
247 * If the function fails an appropriate status will be returned
248 * and the value of OutBuffer is undefined.
249 *
250 ******************************************************************************/
251
252 ACPI_STATUS
253 AcpiGetSystemInfo (
254 ACPI_BUFFER *OutBuffer)
255 {
256 ACPI_SYSTEM_INFO *InfoPtr;
257 ACPI_STATUS Status;
258
259
260 ACPI_FUNCTION_TRACE (AcpiGetSystemInfo);
261
262
263 /* Parameter validation */
264
265 Status = AcpiUtValidateBuffer (OutBuffer);
266 if (ACPI_FAILURE (Status))
267 {
268 return_ACPI_STATUS (Status);
269 }
270
271 /* Validate/Allocate/Clear caller buffer */
272
273 Status = AcpiUtInitializeBuffer (OutBuffer, sizeof (ACPI_SYSTEM_INFO));
274 if (ACPI_FAILURE (Status))
275 {
276 return_ACPI_STATUS (Status);
277 }
278
279 /*
280 * Populate the return buffer
281 */
282 InfoPtr = (ACPI_SYSTEM_INFO *) OutBuffer->Pointer;
283 InfoPtr->AcpiCaVersion = ACPI_CA_VERSION;
284
285 /* System flags (ACPI capabilities) */
286
287 InfoPtr->Flags = ACPI_SYS_MODE_ACPI;
288
289 /* Timer resolution - 24 or 32 bits */
290
291 if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
292 {
293 InfoPtr->TimerResolution = 24;
294 }
295 else
296 {
297 InfoPtr->TimerResolution = 32;
298 }
299
300 /* Clear the reserved fields */
301
302 InfoPtr->Reserved1 = 0;
303 InfoPtr->Reserved2 = 0;
304
305 /* Current debug levels */
306
307 InfoPtr->DebugLayer = AcpiDbgLayer;
308 InfoPtr->DebugLevel = AcpiDbgLevel;
309
310 return_ACPI_STATUS (AE_OK);
311 }
312
ACPI_EXPORT_SYMBOL(AcpiGetSystemInfo)313 ACPI_EXPORT_SYMBOL (AcpiGetSystemInfo)
314
315
316 /*******************************************************************************
317 *
318 * FUNCTION: AcpiGetStatistics
319 *
320 * PARAMETERS: Stats - Where the statistics are returned
321 *
322 * RETURN: Status - the status of the call
323 *
324 * DESCRIPTION: Get the contents of the various system counters
325 *
326 ******************************************************************************/
327
328 ACPI_STATUS
329 AcpiGetStatistics (
330 ACPI_STATISTICS *Stats)
331 {
332 ACPI_FUNCTION_TRACE (AcpiGetStatistics);
333
334
335 /* Parameter validation */
336
337 if (!Stats)
338 {
339 return_ACPI_STATUS (AE_BAD_PARAMETER);
340 }
341
342 /* Various interrupt-based event counters */
343
344 Stats->SciCount = AcpiSciCount;
345 Stats->GpeCount = AcpiGpeCount;
346
347 memcpy (Stats->FixedEventCount, AcpiFixedEventCount,
348 sizeof (AcpiFixedEventCount));
349
350 /* Other counters */
351
352 Stats->MethodCount = AcpiMethodCount;
353 return_ACPI_STATUS (AE_OK);
354 }
355
ACPI_EXPORT_SYMBOL(AcpiGetStatistics)356 ACPI_EXPORT_SYMBOL (AcpiGetStatistics)
357
358
359 /*****************************************************************************
360 *
361 * FUNCTION: AcpiInstallInitializationHandler
362 *
363 * PARAMETERS: Handler - Callback procedure
364 * Function - Not (currently) used, see below
365 *
366 * RETURN: Status
367 *
368 * DESCRIPTION: Install an initialization handler
369 *
370 * TBD: When a second function is added, must save the Function also.
371 *
372 ****************************************************************************/
373
374 ACPI_STATUS
375 AcpiInstallInitializationHandler (
376 ACPI_INIT_HANDLER Handler,
377 UINT32 Function)
378 {
379
380 if (!Handler)
381 {
382 return (AE_BAD_PARAMETER);
383 }
384
385 if (AcpiGbl_InitHandler)
386 {
387 return (AE_ALREADY_EXISTS);
388 }
389
390 AcpiGbl_InitHandler = Handler;
391 return (AE_OK);
392 }
393
ACPI_EXPORT_SYMBOL(AcpiInstallInitializationHandler)394 ACPI_EXPORT_SYMBOL (AcpiInstallInitializationHandler)
395
396
397 /*****************************************************************************
398 *
399 * FUNCTION: AcpiPurgeCachedObjects
400 *
401 * PARAMETERS: None
402 *
403 * RETURN: Status
404 *
405 * DESCRIPTION: Empty all caches (delete the cached objects)
406 *
407 ****************************************************************************/
408
409 ACPI_STATUS
410 AcpiPurgeCachedObjects (
411 void)
412 {
413 ACPI_FUNCTION_TRACE (AcpiPurgeCachedObjects);
414
415
416 (void) AcpiOsPurgeCache (AcpiGbl_StateCache);
417 (void) AcpiOsPurgeCache (AcpiGbl_OperandCache);
418 (void) AcpiOsPurgeCache (AcpiGbl_PsNodeCache);
419 (void) AcpiOsPurgeCache (AcpiGbl_PsNodeExtCache);
420
421 return_ACPI_STATUS (AE_OK);
422 }
423
ACPI_EXPORT_SYMBOL(AcpiPurgeCachedObjects)424 ACPI_EXPORT_SYMBOL (AcpiPurgeCachedObjects)
425
426
427 /*****************************************************************************
428 *
429 * FUNCTION: AcpiInstallInterface
430 *
431 * PARAMETERS: InterfaceName - The interface to install
432 *
433 * RETURN: Status
434 *
435 * DESCRIPTION: Install an _OSI interface to the global list
436 *
437 ****************************************************************************/
438
439 ACPI_STATUS
440 AcpiInstallInterface (
441 ACPI_STRING InterfaceName)
442 {
443 ACPI_STATUS Status;
444 ACPI_INTERFACE_INFO *InterfaceInfo;
445
446
447 /* Parameter validation */
448
449 if (!InterfaceName || (strlen (InterfaceName) == 0))
450 {
451 return (AE_BAD_PARAMETER);
452 }
453
454 Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
455 if (ACPI_FAILURE (Status))
456 {
457 return (Status);
458 }
459
460 /* Check if the interface name is already in the global list */
461
462 InterfaceInfo = AcpiUtGetInterface (InterfaceName);
463 if (InterfaceInfo)
464 {
465 /*
466 * The interface already exists in the list. This is OK if the
467 * interface has been marked invalid -- just clear the bit.
468 */
469 if (InterfaceInfo->Flags & ACPI_OSI_INVALID)
470 {
471 InterfaceInfo->Flags &= ~ACPI_OSI_INVALID;
472 Status = AE_OK;
473 }
474 else
475 {
476 Status = AE_ALREADY_EXISTS;
477 }
478 }
479 else
480 {
481 /* New interface name, install into the global list */
482
483 Status = AcpiUtInstallInterface (InterfaceName);
484 }
485
486 AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
487 return (Status);
488 }
489
ACPI_EXPORT_SYMBOL(AcpiInstallInterface)490 ACPI_EXPORT_SYMBOL (AcpiInstallInterface)
491
492
493 /*****************************************************************************
494 *
495 * FUNCTION: AcpiRemoveInterface
496 *
497 * PARAMETERS: InterfaceName - The interface to remove
498 *
499 * RETURN: Status
500 *
501 * DESCRIPTION: Remove an _OSI interface from the global list
502 *
503 ****************************************************************************/
504
505 ACPI_STATUS
506 AcpiRemoveInterface (
507 ACPI_STRING InterfaceName)
508 {
509 ACPI_STATUS Status;
510
511
512 /* Parameter validation */
513
514 if (!InterfaceName || (strlen (InterfaceName) == 0))
515 {
516 return (AE_BAD_PARAMETER);
517 }
518
519 Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
520 if (ACPI_FAILURE (Status))
521 {
522 return (Status);
523 }
524
525 Status = AcpiUtRemoveInterface (InterfaceName);
526
527 AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
528 return (Status);
529 }
530
ACPI_EXPORT_SYMBOL(AcpiRemoveInterface)531 ACPI_EXPORT_SYMBOL (AcpiRemoveInterface)
532
533
534 /*****************************************************************************
535 *
536 * FUNCTION: AcpiInstallInterfaceHandler
537 *
538 * PARAMETERS: Handler - The _OSI interface handler to install
539 * NULL means "remove existing handler"
540 *
541 * RETURN: Status
542 *
543 * DESCRIPTION: Install a handler for the predefined _OSI ACPI method.
544 * invoked during execution of the internal implementation of
545 * _OSI. A NULL handler simply removes any existing handler.
546 *
547 ****************************************************************************/
548
549 ACPI_STATUS
550 AcpiInstallInterfaceHandler (
551 ACPI_INTERFACE_HANDLER Handler)
552 {
553 ACPI_STATUS Status;
554
555
556 Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
557 if (ACPI_FAILURE (Status))
558 {
559 return (Status);
560 }
561
562 if (Handler && AcpiGbl_InterfaceHandler)
563 {
564 Status = AE_ALREADY_EXISTS;
565 }
566 else
567 {
568 AcpiGbl_InterfaceHandler = Handler;
569 }
570
571 AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
572 return (Status);
573 }
574
ACPI_EXPORT_SYMBOL(AcpiInstallInterfaceHandler)575 ACPI_EXPORT_SYMBOL (AcpiInstallInterfaceHandler)
576
577
578 /*****************************************************************************
579 *
580 * FUNCTION: AcpiUpdateInterfaces
581 *
582 * PARAMETERS: Action - Actions to be performed during the
583 * update
584 *
585 * RETURN: Status
586 *
587 * DESCRIPTION: Update _OSI interface strings, disabling or enabling OS vendor
588 * string or/and feature group strings.
589 *
590 ****************************************************************************/
591
592 ACPI_STATUS
593 AcpiUpdateInterfaces (
594 UINT8 Action)
595 {
596 ACPI_STATUS Status;
597
598
599 Status = AcpiOsAcquireMutex (AcpiGbl_OsiMutex, ACPI_WAIT_FOREVER);
600 if (ACPI_FAILURE (Status))
601 {
602 return (Status);
603 }
604
605 Status = AcpiUtUpdateInterfaces (Action);
606
607 AcpiOsReleaseMutex (AcpiGbl_OsiMutex);
608 return (Status);
609 }
610
611
612 /*****************************************************************************
613 *
614 * FUNCTION: AcpiCheckAddressRange
615 *
616 * PARAMETERS: SpaceId - Address space ID
617 * Address - Start address
618 * Length - Length
619 * Warn - TRUE if warning on overlap desired
620 *
621 * RETURN: Count of the number of conflicts detected.
622 *
623 * DESCRIPTION: Check if the input address range overlaps any of the
624 * ASL operation region address ranges.
625 *
626 ****************************************************************************/
627
628 UINT32
AcpiCheckAddressRange(ACPI_ADR_SPACE_TYPE SpaceId,ACPI_PHYSICAL_ADDRESS Address,ACPI_SIZE Length,BOOLEAN Warn)629 AcpiCheckAddressRange (
630 ACPI_ADR_SPACE_TYPE SpaceId,
631 ACPI_PHYSICAL_ADDRESS Address,
632 ACPI_SIZE Length,
633 BOOLEAN Warn)
634 {
635 UINT32 Overlaps;
636 ACPI_STATUS Status;
637
638
639 Status = AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE);
640 if (ACPI_FAILURE (Status))
641 {
642 return (0);
643 }
644
645 Overlaps = AcpiUtCheckAddressRange (SpaceId, Address,
646 (UINT32) Length, Warn);
647
648 (void) AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE);
649 return (Overlaps);
650 }
651
ACPI_EXPORT_SYMBOL(AcpiCheckAddressRange)652 ACPI_EXPORT_SYMBOL (AcpiCheckAddressRange)
653
654 #endif /* !ACPI_ASL_COMPILER */
655
656
657 /*******************************************************************************
658 *
659 * FUNCTION: AcpiDecodePldBuffer
660 *
661 * PARAMETERS: InBuffer - Buffer returned by _PLD method
662 * Length - Length of the InBuffer
663 * ReturnBuffer - Where the decode buffer is returned
664 *
665 * RETURN: Status and the decoded _PLD buffer. User must deallocate
666 * the buffer via ACPI_FREE.
667 *
668 * DESCRIPTION: Decode the bit-packed buffer returned by the _PLD method into
669 * a local struct that is much more useful to an ACPI driver.
670 *
671 ******************************************************************************/
672
673 ACPI_STATUS
674 AcpiDecodePldBuffer (
675 UINT8 *InBuffer,
676 ACPI_SIZE Length,
677 ACPI_PLD_INFO **ReturnBuffer)
678 {
679 ACPI_PLD_INFO *PldInfo;
680 UINT32 *Buffer = ACPI_CAST_PTR (UINT32, InBuffer);
681 UINT32 Dword;
682
683
684 /* Parameter validation */
685
686 if (!InBuffer || !ReturnBuffer || (Length < ACPI_PLD_REV1_BUFFER_SIZE))
687 {
688 return (AE_BAD_PARAMETER);
689 }
690
691 PldInfo = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PLD_INFO));
692 if (!PldInfo)
693 {
694 return (AE_NO_MEMORY);
695 }
696
697 /* First 32-bit DWord */
698
699 ACPI_MOVE_32_TO_32 (&Dword, &Buffer[0]);
700 PldInfo->Revision = ACPI_PLD_GET_REVISION (&Dword);
701 PldInfo->IgnoreColor = ACPI_PLD_GET_IGNORE_COLOR (&Dword);
702 PldInfo->Red = ACPI_PLD_GET_RED (&Dword);
703 PldInfo->Green = ACPI_PLD_GET_GREEN (&Dword);
704 PldInfo->Blue = ACPI_PLD_GET_BLUE (&Dword);
705
706 /* Second 32-bit DWord */
707
708 ACPI_MOVE_32_TO_32 (&Dword, &Buffer[1]);
709 PldInfo->Width = ACPI_PLD_GET_WIDTH (&Dword);
710 PldInfo->Height = ACPI_PLD_GET_HEIGHT(&Dword);
711
712 /* Third 32-bit DWord */
713
714 ACPI_MOVE_32_TO_32 (&Dword, &Buffer[2]);
715 PldInfo->UserVisible = ACPI_PLD_GET_USER_VISIBLE (&Dword);
716 PldInfo->Dock = ACPI_PLD_GET_DOCK (&Dword);
717 PldInfo->Lid = ACPI_PLD_GET_LID (&Dword);
718 PldInfo->Panel = ACPI_PLD_GET_PANEL (&Dword);
719 PldInfo->VerticalPosition = ACPI_PLD_GET_VERTICAL (&Dword);
720 PldInfo->HorizontalPosition = ACPI_PLD_GET_HORIZONTAL (&Dword);
721 PldInfo->Shape = ACPI_PLD_GET_SHAPE (&Dword);
722 PldInfo->GroupOrientation = ACPI_PLD_GET_ORIENTATION (&Dword);
723 PldInfo->GroupToken = ACPI_PLD_GET_TOKEN (&Dword);
724 PldInfo->GroupPosition = ACPI_PLD_GET_POSITION (&Dword);
725 PldInfo->Bay = ACPI_PLD_GET_BAY (&Dword);
726
727 /* Fourth 32-bit DWord */
728
729 ACPI_MOVE_32_TO_32 (&Dword, &Buffer[3]);
730 PldInfo->Ejectable = ACPI_PLD_GET_EJECTABLE (&Dword);
731 PldInfo->OspmEjectRequired = ACPI_PLD_GET_OSPM_EJECT (&Dword);
732 PldInfo->CabinetNumber = ACPI_PLD_GET_CABINET (&Dword);
733 PldInfo->CardCageNumber = ACPI_PLD_GET_CARD_CAGE (&Dword);
734 PldInfo->Reference = ACPI_PLD_GET_REFERENCE (&Dword);
735 PldInfo->Rotation = ACPI_PLD_GET_ROTATION (&Dword);
736 PldInfo->Order = ACPI_PLD_GET_ORDER (&Dword);
737
738 if (Length >= ACPI_PLD_REV2_BUFFER_SIZE)
739 {
740 /* Fifth 32-bit DWord (Revision 2 of _PLD) */
741
742 ACPI_MOVE_32_TO_32 (&Dword, &Buffer[4]);
743 PldInfo->VerticalOffset = ACPI_PLD_GET_VERT_OFFSET (&Dword);
744 PldInfo->HorizontalOffset = ACPI_PLD_GET_HORIZ_OFFSET (&Dword);
745 }
746
747 *ReturnBuffer = PldInfo;
748 return (AE_OK);
749 }
750
751 ACPI_EXPORT_SYMBOL (AcpiDecodePldBuffer)
752