1/*******************************************************************************
2 *
3 * Module Name: rsxface - Public interfaces to the resource manager
4 *
5 ******************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2009, 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 __RSXFACE_C__
118
119#include <contrib/dev/acpica/include/acpi.h>
120#include <contrib/dev/acpica/include/accommon.h>
121#include <contrib/dev/acpica/include/acresrc.h>
122#include <contrib/dev/acpica/include/acnamesp.h>
123
124#define _COMPONENT ACPI_RESOURCES
125 ACPI_MODULE_NAME ("rsxface")
126
127/* Local macros for 16,32-bit to 64-bit conversion */
128
129#define ACPI_COPY_FIELD(Out, In, Field) ((Out)->Field = (In)->Field)
130#define ACPI_COPY_ADDRESS(Out, In) \
131 ACPI_COPY_FIELD(Out, In, ResourceType); \
132 ACPI_COPY_FIELD(Out, In, ProducerConsumer); \
133 ACPI_COPY_FIELD(Out, In, Decode); \
134 ACPI_COPY_FIELD(Out, In, MinAddressFixed); \
135 ACPI_COPY_FIELD(Out, In, MaxAddressFixed); \
136 ACPI_COPY_FIELD(Out, In, Info); \
137 ACPI_COPY_FIELD(Out, In, Granularity); \
138 ACPI_COPY_FIELD(Out, In, Minimum); \
139 ACPI_COPY_FIELD(Out, In, Maximum); \
140 ACPI_COPY_FIELD(Out, In, TranslationOffset); \
141 ACPI_COPY_FIELD(Out, In, AddressLength); \
142 ACPI_COPY_FIELD(Out, In, ResourceSource);
143
144
145/* Local prototypes */
146
147static ACPI_STATUS
148AcpiRsMatchVendorResource (
149 ACPI_RESOURCE *Resource,
150 void *Context);
151
152static ACPI_STATUS
153AcpiRsValidateParameters (
154 ACPI_HANDLE DeviceHandle,
155 ACPI_BUFFER *Buffer,
156 ACPI_NAMESPACE_NODE **ReturnNode);
157
158
159/*******************************************************************************
160 *
161 * FUNCTION: AcpiRsValidateParameters
162 *
163 * PARAMETERS: DeviceHandle - Handle to a device
164 * Buffer - Pointer to a data buffer
165 * ReturnNode - Pointer to where the device node is returned
166 *
167 * RETURN: Status
168 *
169 * DESCRIPTION: Common parameter validation for resource interfaces
170 *
171 ******************************************************************************/
172
173static ACPI_STATUS
174AcpiRsValidateParameters (
175 ACPI_HANDLE DeviceHandle,
176 ACPI_BUFFER *Buffer,
177 ACPI_NAMESPACE_NODE **ReturnNode)
178{
179 ACPI_STATUS Status;
180 ACPI_NAMESPACE_NODE *Node;
181
182
183 ACPI_FUNCTION_TRACE (RsValidateParameters);
184
185
186 /*
187 * Must have a valid handle to an ACPI device
188 */
189 if (!DeviceHandle)
190 {
191 return_ACPI_STATUS (AE_BAD_PARAMETER);
192 }
193
194 Node = AcpiNsValidateHandle (DeviceHandle);
195 if (!Node)
196 {
197 return_ACPI_STATUS (AE_BAD_PARAMETER);
198 }
199
200 if (Node->Type != ACPI_TYPE_DEVICE)
201 {
202 return_ACPI_STATUS (AE_TYPE);
203 }
204
205 /*
206 * Validate the user buffer object
207 *
208 * if there is a non-zero buffer length we also need a valid pointer in
209 * the buffer. If it's a zero buffer length, we'll be returning the
210 * needed buffer size (later), so keep going.
211 */
212 Status = AcpiUtValidateBuffer (Buffer);
213 if (ACPI_FAILURE (Status))
214 {
215 return_ACPI_STATUS (Status);
216 }
217
218 *ReturnNode = Node;
219 return_ACPI_STATUS (AE_OK);
220}
221
222
223/*******************************************************************************
224 *
225 * FUNCTION: AcpiGetIrqRoutingTable
226 *
227 * PARAMETERS: DeviceHandle - Handle to the Bus device we are querying
228 * RetBuffer - Pointer to a buffer to receive the
229 * current resources for the device
230 *
231 * RETURN: Status
232 *
233 * DESCRIPTION: This function is called to get the IRQ routing table for a
234 * specific bus. The caller must first acquire a handle for the
235 * desired bus. The routine table is placed in the buffer pointed
236 * to by the RetBuffer variable parameter.
237 *
238 * If the function fails an appropriate status will be returned
239 * and the value of RetBuffer is undefined.
240 *
241 * This function attempts to execute the _PRT method contained in
242 * the object indicated by the passed DeviceHandle.
243 *
244 ******************************************************************************/
245
246ACPI_STATUS
247AcpiGetIrqRoutingTable (
248 ACPI_HANDLE DeviceHandle,
249 ACPI_BUFFER *RetBuffer)
250{
251 ACPI_STATUS Status;
252 ACPI_NAMESPACE_NODE *Node;
253
254
255 ACPI_FUNCTION_TRACE (AcpiGetIrqRoutingTable);
256
257
258 /* Validate parameters then dispatch to internal routine */
259
260 Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
261 if (ACPI_FAILURE (Status))
262 {
263 return_ACPI_STATUS (Status);
264 }
265
266 Status = AcpiRsGetPrtMethodData (Node, RetBuffer);
267 return_ACPI_STATUS (Status);
268}
269
270ACPI_EXPORT_SYMBOL (AcpiGetIrqRoutingTable)
271
272
273/*******************************************************************************
274 *
275 * FUNCTION: AcpiGetCurrentResources
276 *
277 * PARAMETERS: DeviceHandle - Handle to the device object for the
278 * device we are querying
279 * RetBuffer - Pointer to a buffer to receive the
280 * current resources for the device
281 *
282 * RETURN: Status
283 *
284 * DESCRIPTION: This function is called to get the current resources for a
285 * specific device. The caller must first acquire a handle for
286 * the desired device. The resource data is placed in the buffer
287 * pointed to by the RetBuffer variable parameter.
288 *
289 * If the function fails an appropriate status will be returned
290 * and the value of RetBuffer is undefined.
291 *
292 * This function attempts to execute the _CRS method contained in
293 * the object indicated by the passed DeviceHandle.
294 *
295 ******************************************************************************/
296
297ACPI_STATUS
298AcpiGetCurrentResources (
299 ACPI_HANDLE DeviceHandle,
300 ACPI_BUFFER *RetBuffer)
301{
302 ACPI_STATUS Status;
303 ACPI_NAMESPACE_NODE *Node;
304
305
306 ACPI_FUNCTION_TRACE (AcpiGetCurrentResources);
307
308
309 /* Validate parameters then dispatch to internal routine */
310
311 Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
312 if (ACPI_FAILURE (Status))
313 {
314 return_ACPI_STATUS (Status);
315 }
316
317 Status = AcpiRsGetCrsMethodData (Node, RetBuffer);
318 return_ACPI_STATUS (Status);
319}
320
321ACPI_EXPORT_SYMBOL (AcpiGetCurrentResources)
322
323
324/*******************************************************************************
325 *
326 * FUNCTION: AcpiGetPossibleResources
327 *
328 * PARAMETERS: DeviceHandle - Handle to the device object for the
329 * device we are querying
330 * RetBuffer - Pointer to a buffer to receive the
331 * resources for the device
332 *
333 * RETURN: Status
334 *
335 * DESCRIPTION: This function is called to get a list of the possible resources
336 * for a specific device. The caller must first acquire a handle
337 * for the desired device. The resource data is placed in the
338 * buffer pointed to by the RetBuffer variable.
339 *
340 * If the function fails an appropriate status will be returned
341 * and the value of RetBuffer is undefined.
342 *
343 ******************************************************************************/
344
345ACPI_STATUS
346AcpiGetPossibleResources (
347 ACPI_HANDLE DeviceHandle,
348 ACPI_BUFFER *RetBuffer)
349{
350 ACPI_STATUS Status;
351 ACPI_NAMESPACE_NODE *Node;
352
353
354 ACPI_FUNCTION_TRACE (AcpiGetPossibleResources);
355
356
357 /* Validate parameters then dispatch to internal routine */
358
359 Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
360 if (ACPI_FAILURE (Status))
361 {
362 return_ACPI_STATUS (Status);
363 }
364
365 Status = AcpiRsGetPrsMethodData (Node, RetBuffer);
366 return_ACPI_STATUS (Status);
367}
368
369ACPI_EXPORT_SYMBOL (AcpiGetPossibleResources)
370
371
372/*******************************************************************************
373 *
374 * FUNCTION: AcpiSetCurrentResources
375 *
376 * PARAMETERS: DeviceHandle - Handle to the device object for the
377 * device we are setting resources
378 * InBuffer - Pointer to a buffer containing the
379 * resources to be set for the device
380 *
381 * RETURN: Status
382 *
383 * DESCRIPTION: This function is called to set the current resources for a
384 * specific device. The caller must first acquire a handle for
385 * the desired device. The resource data is passed to the routine
386 * the buffer pointed to by the InBuffer variable.
387 *
388 ******************************************************************************/
389
390ACPI_STATUS
391AcpiSetCurrentResources (
392 ACPI_HANDLE DeviceHandle,
393 ACPI_BUFFER *InBuffer)
394{
395 ACPI_STATUS Status;
396 ACPI_NAMESPACE_NODE *Node;
397
398
399 ACPI_FUNCTION_TRACE (AcpiSetCurrentResources);
400
401
402 /* Validate the buffer, don't allow zero length */
403
404 if ((!InBuffer) ||
405 (!InBuffer->Pointer) ||
406 (!InBuffer->Length))
407 {
408 return_ACPI_STATUS (AE_BAD_PARAMETER);
409 }
410
411 /* Validate parameters then dispatch to internal routine */
412
413 Status = AcpiRsValidateParameters (DeviceHandle, InBuffer, &Node);
414 if (ACPI_FAILURE (Status))
415 {
416 return_ACPI_STATUS (Status);
417 }
418
419 Status = AcpiRsSetSrsMethodData (Node, InBuffer);
420 return_ACPI_STATUS (Status);
421}
422
423ACPI_EXPORT_SYMBOL (AcpiSetCurrentResources)
424
425
426/******************************************************************************
427 *
428 * FUNCTION: AcpiResourceToAddress64
429 *
430 * PARAMETERS: Resource - Pointer to a resource
431 * Out - Pointer to the users's return buffer
432 * (a struct acpi_resource_address64)
433 *
434 * RETURN: Status
435 *
436 * DESCRIPTION: If the resource is an address16, address32, or address64,
437 * copy it to the address64 return buffer. This saves the
438 * caller from having to duplicate code for different-sized
439 * addresses.
440 *
441 ******************************************************************************/
442
443ACPI_STATUS
444AcpiResourceToAddress64 (
445 ACPI_RESOURCE *Resource,
446 ACPI_RESOURCE_ADDRESS64 *Out)
447{
448 ACPI_RESOURCE_ADDRESS16 *Address16;
449 ACPI_RESOURCE_ADDRESS32 *Address32;
450
451
452 if (!Resource || !Out)
453 {
454 return (AE_BAD_PARAMETER);
455 }
456
457 /* Convert 16 or 32 address descriptor to 64 */
458
459 switch (Resource->Type)
460 {
461 case ACPI_RESOURCE_TYPE_ADDRESS16:
462
463 Address16 = ACPI_CAST_PTR (ACPI_RESOURCE_ADDRESS16, &Resource->Data);
464 ACPI_COPY_ADDRESS (Out, Address16);
465 break;
466
467 case ACPI_RESOURCE_TYPE_ADDRESS32:
468
469 Address32 = ACPI_CAST_PTR (ACPI_RESOURCE_ADDRESS32, &Resource->Data);
470 ACPI_COPY_ADDRESS (Out, Address32);
471 break;
472
473 case ACPI_RESOURCE_TYPE_ADDRESS64:
474
475 /* Simple copy for 64 bit source */
476
477 ACPI_MEMCPY (Out, &Resource->Data, sizeof (ACPI_RESOURCE_ADDRESS64));
478 break;
479
480 default:
481 return (AE_BAD_PARAMETER);
482 }
483
484 return (AE_OK);
485}
486
487ACPI_EXPORT_SYMBOL (AcpiResourceToAddress64)
488
489
490/*******************************************************************************
491 *
492 * FUNCTION: AcpiGetVendorResource
493 *
494 * PARAMETERS: DeviceHandle - Handle for the parent device object
495 * Name - Method name for the parent resource
496 * (METHOD_NAME__CRS or METHOD_NAME__PRS)
497 * Uuid - Pointer to the UUID to be matched.
498 * includes both subtype and 16-byte UUID
499 * RetBuffer - Where the vendor resource is returned
500 *
501 * RETURN: Status
502 *
503 * DESCRIPTION: Walk a resource template for the specified evice to find a
504 * vendor-defined resource that matches the supplied UUID and
505 * UUID subtype. Returns a ACPI_RESOURCE of type Vendor.
506 *
507 ******************************************************************************/
508
509ACPI_STATUS
510AcpiGetVendorResource (
511 ACPI_HANDLE DeviceHandle,
512 char *Name,
513 ACPI_VENDOR_UUID *Uuid,
514 ACPI_BUFFER *RetBuffer)
515{
516 ACPI_VENDOR_WALK_INFO Info;
517 ACPI_STATUS Status;
518
519
520 /* Other parameters are validated by AcpiWalkResources */
521
522 if (!Uuid || !RetBuffer)
523 {
524 return (AE_BAD_PARAMETER);
525 }
526
527 Info.Uuid = Uuid;
528 Info.Buffer = RetBuffer;
529 Info.Status = AE_NOT_EXIST;
530
531 /* Walk the _CRS or _PRS resource list for this device */
532
533 Status = AcpiWalkResources (DeviceHandle, Name, AcpiRsMatchVendorResource,
534 &Info);
535 if (ACPI_FAILURE (Status))
536 {
537 return (Status);
538 }
539
540 return (Info.Status);
541}
542
543ACPI_EXPORT_SYMBOL (AcpiGetVendorResource)
544
545
546/*******************************************************************************
547 *
548 * FUNCTION: AcpiRsMatchVendorResource
549 *
550 * PARAMETERS: ACPI_WALK_RESOURCE_CALLBACK
551 *
552 * RETURN: Status
553 *
554 * DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID
555 *
556 ******************************************************************************/
557
558static ACPI_STATUS
559AcpiRsMatchVendorResource (
560 ACPI_RESOURCE *Resource,
561 void *Context)
562{
563 ACPI_VENDOR_WALK_INFO *Info = Context;
564 ACPI_RESOURCE_VENDOR_TYPED *Vendor;
565 ACPI_BUFFER *Buffer;
566 ACPI_STATUS Status;
567
568
569 /* Ignore all descriptors except Vendor */
570
571 if (Resource->Type != ACPI_RESOURCE_TYPE_VENDOR)
572 {
573 return (AE_OK);
574 }
575
576 Vendor = &Resource->Data.VendorTyped;
577
578 /*
579 * For a valid match, these conditions must hold:
580 *
581 * 1) Length of descriptor data must be at least as long as a UUID struct
582 * 2) The UUID subtypes must match
583 * 3) The UUID data must match
584 */
585 if ((Vendor->ByteLength < (ACPI_UUID_LENGTH + 1)) ||
586 (Vendor->UuidSubtype != Info->Uuid->Subtype) ||
587 (ACPI_MEMCMP (Vendor->Uuid, Info->Uuid->Data, ACPI_UUID_LENGTH)))
588 {
589 return (AE_OK);
590 }
591
592 /* Validate/Allocate/Clear caller buffer */
593
594 Buffer = Info->Buffer;
595 Status = AcpiUtInitializeBuffer (Buffer, Resource->Length);
596 if (ACPI_FAILURE (Status))
597 {
598 return (Status);
599 }
600
601 /* Found the correct resource, copy and return it */
602
603 ACPI_MEMCPY (Buffer->Pointer, Resource, Resource->Length);
604 Buffer->Length = Resource->Length;
605
606 /* Found the desired descriptor, terminate resource walk */
607
608 Info->Status = AE_OK;
609 return (AE_CTRL_TERMINATE);
610}
611
612
613/*******************************************************************************
614 *
615 * FUNCTION: AcpiWalkResources
616 *
617 * PARAMETERS: DeviceHandle - Handle to the device object for the
618 * device we are querying
619 * Name - Method name of the resources we want
620 * (METHOD_NAME__CRS or METHOD_NAME__PRS)
621 * UserFunction - Called for each resource
622 * Context - Passed to UserFunction
623 *
624 * RETURN: Status
625 *
626 * DESCRIPTION: Retrieves the current or possible resource list for the
627 * specified device. The UserFunction is called once for
628 * each resource in the list.
629 *
630 ******************************************************************************/
631
632ACPI_STATUS
633AcpiWalkResources (
634 ACPI_HANDLE DeviceHandle,
635 char *Name,
636 ACPI_WALK_RESOURCE_CALLBACK UserFunction,
637 void *Context)
638{
639 ACPI_STATUS Status;
640 ACPI_BUFFER Buffer;
641 ACPI_RESOURCE *Resource;
642 ACPI_RESOURCE *ResourceEnd;
643
644
645 ACPI_FUNCTION_TRACE (AcpiWalkResources);
646
647
648 /* Parameter validation */
649
650 if (!DeviceHandle || !UserFunction || !Name ||
651 (!ACPI_COMPARE_NAME (Name, METHOD_NAME__CRS) &&
652 !ACPI_COMPARE_NAME (Name, METHOD_NAME__PRS)))
653 {
654 return_ACPI_STATUS (AE_BAD_PARAMETER);
655 }
656
657 /* Get the _CRS or _PRS resource list */
658
659 Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
660 Status = AcpiRsGetMethodData (DeviceHandle, Name, &Buffer);
661 if (ACPI_FAILURE (Status))
662 {
663 return_ACPI_STATUS (Status);
664 }
665
666 /* Buffer now contains the resource list */
667
668 Resource = ACPI_CAST_PTR (ACPI_RESOURCE, Buffer.Pointer);
669 ResourceEnd = ACPI_ADD_PTR (ACPI_RESOURCE, Buffer.Pointer, Buffer.Length);
670
671 /* Walk the resource list until the EndTag is found (or buffer end) */
672
673 while (Resource < ResourceEnd)
674 {
675 /* Sanity check the resource */
676
677 if (Resource->Type > ACPI_RESOURCE_TYPE_MAX)
678 {
679 Status = AE_AML_INVALID_RESOURCE_TYPE;
680 break;
681 }
682
683 /* Invoke the user function, abort on any error returned */
684
685 Status = UserFunction (Resource, Context);
686 if (ACPI_FAILURE (Status))
687 {
688 if (Status == AE_CTRL_TERMINATE)
689 {
690 /* This is an OK termination by the user function */
691
692 Status = AE_OK;
693 }
694 break;
695 }
696
697 /* EndTag indicates end-of-list */
698
699 if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG)
700 {
701 break;
702 }
703
704 /* Get the next resource descriptor */
705
706 Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length);
707 }
708
709 ACPI_FREE (Buffer.Pointer);
710 return_ACPI_STATUS (Status);
711}
712
713ACPI_EXPORT_SYMBOL (AcpiWalkResources)
2 *
3 * Module Name: rsxface - Public interfaces to the resource manager
4 *
5 ******************************************************************************/
6
7/******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2009, 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 __RSXFACE_C__
118
119#include <contrib/dev/acpica/include/acpi.h>
120#include <contrib/dev/acpica/include/accommon.h>
121#include <contrib/dev/acpica/include/acresrc.h>
122#include <contrib/dev/acpica/include/acnamesp.h>
123
124#define _COMPONENT ACPI_RESOURCES
125 ACPI_MODULE_NAME ("rsxface")
126
127/* Local macros for 16,32-bit to 64-bit conversion */
128
129#define ACPI_COPY_FIELD(Out, In, Field) ((Out)->Field = (In)->Field)
130#define ACPI_COPY_ADDRESS(Out, In) \
131 ACPI_COPY_FIELD(Out, In, ResourceType); \
132 ACPI_COPY_FIELD(Out, In, ProducerConsumer); \
133 ACPI_COPY_FIELD(Out, In, Decode); \
134 ACPI_COPY_FIELD(Out, In, MinAddressFixed); \
135 ACPI_COPY_FIELD(Out, In, MaxAddressFixed); \
136 ACPI_COPY_FIELD(Out, In, Info); \
137 ACPI_COPY_FIELD(Out, In, Granularity); \
138 ACPI_COPY_FIELD(Out, In, Minimum); \
139 ACPI_COPY_FIELD(Out, In, Maximum); \
140 ACPI_COPY_FIELD(Out, In, TranslationOffset); \
141 ACPI_COPY_FIELD(Out, In, AddressLength); \
142 ACPI_COPY_FIELD(Out, In, ResourceSource);
143
144
145/* Local prototypes */
146
147static ACPI_STATUS
148AcpiRsMatchVendorResource (
149 ACPI_RESOURCE *Resource,
150 void *Context);
151
152static ACPI_STATUS
153AcpiRsValidateParameters (
154 ACPI_HANDLE DeviceHandle,
155 ACPI_BUFFER *Buffer,
156 ACPI_NAMESPACE_NODE **ReturnNode);
157
158
159/*******************************************************************************
160 *
161 * FUNCTION: AcpiRsValidateParameters
162 *
163 * PARAMETERS: DeviceHandle - Handle to a device
164 * Buffer - Pointer to a data buffer
165 * ReturnNode - Pointer to where the device node is returned
166 *
167 * RETURN: Status
168 *
169 * DESCRIPTION: Common parameter validation for resource interfaces
170 *
171 ******************************************************************************/
172
173static ACPI_STATUS
174AcpiRsValidateParameters (
175 ACPI_HANDLE DeviceHandle,
176 ACPI_BUFFER *Buffer,
177 ACPI_NAMESPACE_NODE **ReturnNode)
178{
179 ACPI_STATUS Status;
180 ACPI_NAMESPACE_NODE *Node;
181
182
183 ACPI_FUNCTION_TRACE (RsValidateParameters);
184
185
186 /*
187 * Must have a valid handle to an ACPI device
188 */
189 if (!DeviceHandle)
190 {
191 return_ACPI_STATUS (AE_BAD_PARAMETER);
192 }
193
194 Node = AcpiNsValidateHandle (DeviceHandle);
195 if (!Node)
196 {
197 return_ACPI_STATUS (AE_BAD_PARAMETER);
198 }
199
200 if (Node->Type != ACPI_TYPE_DEVICE)
201 {
202 return_ACPI_STATUS (AE_TYPE);
203 }
204
205 /*
206 * Validate the user buffer object
207 *
208 * if there is a non-zero buffer length we also need a valid pointer in
209 * the buffer. If it's a zero buffer length, we'll be returning the
210 * needed buffer size (later), so keep going.
211 */
212 Status = AcpiUtValidateBuffer (Buffer);
213 if (ACPI_FAILURE (Status))
214 {
215 return_ACPI_STATUS (Status);
216 }
217
218 *ReturnNode = Node;
219 return_ACPI_STATUS (AE_OK);
220}
221
222
223/*******************************************************************************
224 *
225 * FUNCTION: AcpiGetIrqRoutingTable
226 *
227 * PARAMETERS: DeviceHandle - Handle to the Bus device we are querying
228 * RetBuffer - Pointer to a buffer to receive the
229 * current resources for the device
230 *
231 * RETURN: Status
232 *
233 * DESCRIPTION: This function is called to get the IRQ routing table for a
234 * specific bus. The caller must first acquire a handle for the
235 * desired bus. The routine table is placed in the buffer pointed
236 * to by the RetBuffer variable parameter.
237 *
238 * If the function fails an appropriate status will be returned
239 * and the value of RetBuffer is undefined.
240 *
241 * This function attempts to execute the _PRT method contained in
242 * the object indicated by the passed DeviceHandle.
243 *
244 ******************************************************************************/
245
246ACPI_STATUS
247AcpiGetIrqRoutingTable (
248 ACPI_HANDLE DeviceHandle,
249 ACPI_BUFFER *RetBuffer)
250{
251 ACPI_STATUS Status;
252 ACPI_NAMESPACE_NODE *Node;
253
254
255 ACPI_FUNCTION_TRACE (AcpiGetIrqRoutingTable);
256
257
258 /* Validate parameters then dispatch to internal routine */
259
260 Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
261 if (ACPI_FAILURE (Status))
262 {
263 return_ACPI_STATUS (Status);
264 }
265
266 Status = AcpiRsGetPrtMethodData (Node, RetBuffer);
267 return_ACPI_STATUS (Status);
268}
269
270ACPI_EXPORT_SYMBOL (AcpiGetIrqRoutingTable)
271
272
273/*******************************************************************************
274 *
275 * FUNCTION: AcpiGetCurrentResources
276 *
277 * PARAMETERS: DeviceHandle - Handle to the device object for the
278 * device we are querying
279 * RetBuffer - Pointer to a buffer to receive the
280 * current resources for the device
281 *
282 * RETURN: Status
283 *
284 * DESCRIPTION: This function is called to get the current resources for a
285 * specific device. The caller must first acquire a handle for
286 * the desired device. The resource data is placed in the buffer
287 * pointed to by the RetBuffer variable parameter.
288 *
289 * If the function fails an appropriate status will be returned
290 * and the value of RetBuffer is undefined.
291 *
292 * This function attempts to execute the _CRS method contained in
293 * the object indicated by the passed DeviceHandle.
294 *
295 ******************************************************************************/
296
297ACPI_STATUS
298AcpiGetCurrentResources (
299 ACPI_HANDLE DeviceHandle,
300 ACPI_BUFFER *RetBuffer)
301{
302 ACPI_STATUS Status;
303 ACPI_NAMESPACE_NODE *Node;
304
305
306 ACPI_FUNCTION_TRACE (AcpiGetCurrentResources);
307
308
309 /* Validate parameters then dispatch to internal routine */
310
311 Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
312 if (ACPI_FAILURE (Status))
313 {
314 return_ACPI_STATUS (Status);
315 }
316
317 Status = AcpiRsGetCrsMethodData (Node, RetBuffer);
318 return_ACPI_STATUS (Status);
319}
320
321ACPI_EXPORT_SYMBOL (AcpiGetCurrentResources)
322
323
324/*******************************************************************************
325 *
326 * FUNCTION: AcpiGetPossibleResources
327 *
328 * PARAMETERS: DeviceHandle - Handle to the device object for the
329 * device we are querying
330 * RetBuffer - Pointer to a buffer to receive the
331 * resources for the device
332 *
333 * RETURN: Status
334 *
335 * DESCRIPTION: This function is called to get a list of the possible resources
336 * for a specific device. The caller must first acquire a handle
337 * for the desired device. The resource data is placed in the
338 * buffer pointed to by the RetBuffer variable.
339 *
340 * If the function fails an appropriate status will be returned
341 * and the value of RetBuffer is undefined.
342 *
343 ******************************************************************************/
344
345ACPI_STATUS
346AcpiGetPossibleResources (
347 ACPI_HANDLE DeviceHandle,
348 ACPI_BUFFER *RetBuffer)
349{
350 ACPI_STATUS Status;
351 ACPI_NAMESPACE_NODE *Node;
352
353
354 ACPI_FUNCTION_TRACE (AcpiGetPossibleResources);
355
356
357 /* Validate parameters then dispatch to internal routine */
358
359 Status = AcpiRsValidateParameters (DeviceHandle, RetBuffer, &Node);
360 if (ACPI_FAILURE (Status))
361 {
362 return_ACPI_STATUS (Status);
363 }
364
365 Status = AcpiRsGetPrsMethodData (Node, RetBuffer);
366 return_ACPI_STATUS (Status);
367}
368
369ACPI_EXPORT_SYMBOL (AcpiGetPossibleResources)
370
371
372/*******************************************************************************
373 *
374 * FUNCTION: AcpiSetCurrentResources
375 *
376 * PARAMETERS: DeviceHandle - Handle to the device object for the
377 * device we are setting resources
378 * InBuffer - Pointer to a buffer containing the
379 * resources to be set for the device
380 *
381 * RETURN: Status
382 *
383 * DESCRIPTION: This function is called to set the current resources for a
384 * specific device. The caller must first acquire a handle for
385 * the desired device. The resource data is passed to the routine
386 * the buffer pointed to by the InBuffer variable.
387 *
388 ******************************************************************************/
389
390ACPI_STATUS
391AcpiSetCurrentResources (
392 ACPI_HANDLE DeviceHandle,
393 ACPI_BUFFER *InBuffer)
394{
395 ACPI_STATUS Status;
396 ACPI_NAMESPACE_NODE *Node;
397
398
399 ACPI_FUNCTION_TRACE (AcpiSetCurrentResources);
400
401
402 /* Validate the buffer, don't allow zero length */
403
404 if ((!InBuffer) ||
405 (!InBuffer->Pointer) ||
406 (!InBuffer->Length))
407 {
408 return_ACPI_STATUS (AE_BAD_PARAMETER);
409 }
410
411 /* Validate parameters then dispatch to internal routine */
412
413 Status = AcpiRsValidateParameters (DeviceHandle, InBuffer, &Node);
414 if (ACPI_FAILURE (Status))
415 {
416 return_ACPI_STATUS (Status);
417 }
418
419 Status = AcpiRsSetSrsMethodData (Node, InBuffer);
420 return_ACPI_STATUS (Status);
421}
422
423ACPI_EXPORT_SYMBOL (AcpiSetCurrentResources)
424
425
426/******************************************************************************
427 *
428 * FUNCTION: AcpiResourceToAddress64
429 *
430 * PARAMETERS: Resource - Pointer to a resource
431 * Out - Pointer to the users's return buffer
432 * (a struct acpi_resource_address64)
433 *
434 * RETURN: Status
435 *
436 * DESCRIPTION: If the resource is an address16, address32, or address64,
437 * copy it to the address64 return buffer. This saves the
438 * caller from having to duplicate code for different-sized
439 * addresses.
440 *
441 ******************************************************************************/
442
443ACPI_STATUS
444AcpiResourceToAddress64 (
445 ACPI_RESOURCE *Resource,
446 ACPI_RESOURCE_ADDRESS64 *Out)
447{
448 ACPI_RESOURCE_ADDRESS16 *Address16;
449 ACPI_RESOURCE_ADDRESS32 *Address32;
450
451
452 if (!Resource || !Out)
453 {
454 return (AE_BAD_PARAMETER);
455 }
456
457 /* Convert 16 or 32 address descriptor to 64 */
458
459 switch (Resource->Type)
460 {
461 case ACPI_RESOURCE_TYPE_ADDRESS16:
462
463 Address16 = ACPI_CAST_PTR (ACPI_RESOURCE_ADDRESS16, &Resource->Data);
464 ACPI_COPY_ADDRESS (Out, Address16);
465 break;
466
467 case ACPI_RESOURCE_TYPE_ADDRESS32:
468
469 Address32 = ACPI_CAST_PTR (ACPI_RESOURCE_ADDRESS32, &Resource->Data);
470 ACPI_COPY_ADDRESS (Out, Address32);
471 break;
472
473 case ACPI_RESOURCE_TYPE_ADDRESS64:
474
475 /* Simple copy for 64 bit source */
476
477 ACPI_MEMCPY (Out, &Resource->Data, sizeof (ACPI_RESOURCE_ADDRESS64));
478 break;
479
480 default:
481 return (AE_BAD_PARAMETER);
482 }
483
484 return (AE_OK);
485}
486
487ACPI_EXPORT_SYMBOL (AcpiResourceToAddress64)
488
489
490/*******************************************************************************
491 *
492 * FUNCTION: AcpiGetVendorResource
493 *
494 * PARAMETERS: DeviceHandle - Handle for the parent device object
495 * Name - Method name for the parent resource
496 * (METHOD_NAME__CRS or METHOD_NAME__PRS)
497 * Uuid - Pointer to the UUID to be matched.
498 * includes both subtype and 16-byte UUID
499 * RetBuffer - Where the vendor resource is returned
500 *
501 * RETURN: Status
502 *
503 * DESCRIPTION: Walk a resource template for the specified evice to find a
504 * vendor-defined resource that matches the supplied UUID and
505 * UUID subtype. Returns a ACPI_RESOURCE of type Vendor.
506 *
507 ******************************************************************************/
508
509ACPI_STATUS
510AcpiGetVendorResource (
511 ACPI_HANDLE DeviceHandle,
512 char *Name,
513 ACPI_VENDOR_UUID *Uuid,
514 ACPI_BUFFER *RetBuffer)
515{
516 ACPI_VENDOR_WALK_INFO Info;
517 ACPI_STATUS Status;
518
519
520 /* Other parameters are validated by AcpiWalkResources */
521
522 if (!Uuid || !RetBuffer)
523 {
524 return (AE_BAD_PARAMETER);
525 }
526
527 Info.Uuid = Uuid;
528 Info.Buffer = RetBuffer;
529 Info.Status = AE_NOT_EXIST;
530
531 /* Walk the _CRS or _PRS resource list for this device */
532
533 Status = AcpiWalkResources (DeviceHandle, Name, AcpiRsMatchVendorResource,
534 &Info);
535 if (ACPI_FAILURE (Status))
536 {
537 return (Status);
538 }
539
540 return (Info.Status);
541}
542
543ACPI_EXPORT_SYMBOL (AcpiGetVendorResource)
544
545
546/*******************************************************************************
547 *
548 * FUNCTION: AcpiRsMatchVendorResource
549 *
550 * PARAMETERS: ACPI_WALK_RESOURCE_CALLBACK
551 *
552 * RETURN: Status
553 *
554 * DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID
555 *
556 ******************************************************************************/
557
558static ACPI_STATUS
559AcpiRsMatchVendorResource (
560 ACPI_RESOURCE *Resource,
561 void *Context)
562{
563 ACPI_VENDOR_WALK_INFO *Info = Context;
564 ACPI_RESOURCE_VENDOR_TYPED *Vendor;
565 ACPI_BUFFER *Buffer;
566 ACPI_STATUS Status;
567
568
569 /* Ignore all descriptors except Vendor */
570
571 if (Resource->Type != ACPI_RESOURCE_TYPE_VENDOR)
572 {
573 return (AE_OK);
574 }
575
576 Vendor = &Resource->Data.VendorTyped;
577
578 /*
579 * For a valid match, these conditions must hold:
580 *
581 * 1) Length of descriptor data must be at least as long as a UUID struct
582 * 2) The UUID subtypes must match
583 * 3) The UUID data must match
584 */
585 if ((Vendor->ByteLength < (ACPI_UUID_LENGTH + 1)) ||
586 (Vendor->UuidSubtype != Info->Uuid->Subtype) ||
587 (ACPI_MEMCMP (Vendor->Uuid, Info->Uuid->Data, ACPI_UUID_LENGTH)))
588 {
589 return (AE_OK);
590 }
591
592 /* Validate/Allocate/Clear caller buffer */
593
594 Buffer = Info->Buffer;
595 Status = AcpiUtInitializeBuffer (Buffer, Resource->Length);
596 if (ACPI_FAILURE (Status))
597 {
598 return (Status);
599 }
600
601 /* Found the correct resource, copy and return it */
602
603 ACPI_MEMCPY (Buffer->Pointer, Resource, Resource->Length);
604 Buffer->Length = Resource->Length;
605
606 /* Found the desired descriptor, terminate resource walk */
607
608 Info->Status = AE_OK;
609 return (AE_CTRL_TERMINATE);
610}
611
612
613/*******************************************************************************
614 *
615 * FUNCTION: AcpiWalkResources
616 *
617 * PARAMETERS: DeviceHandle - Handle to the device object for the
618 * device we are querying
619 * Name - Method name of the resources we want
620 * (METHOD_NAME__CRS or METHOD_NAME__PRS)
621 * UserFunction - Called for each resource
622 * Context - Passed to UserFunction
623 *
624 * RETURN: Status
625 *
626 * DESCRIPTION: Retrieves the current or possible resource list for the
627 * specified device. The UserFunction is called once for
628 * each resource in the list.
629 *
630 ******************************************************************************/
631
632ACPI_STATUS
633AcpiWalkResources (
634 ACPI_HANDLE DeviceHandle,
635 char *Name,
636 ACPI_WALK_RESOURCE_CALLBACK UserFunction,
637 void *Context)
638{
639 ACPI_STATUS Status;
640 ACPI_BUFFER Buffer;
641 ACPI_RESOURCE *Resource;
642 ACPI_RESOURCE *ResourceEnd;
643
644
645 ACPI_FUNCTION_TRACE (AcpiWalkResources);
646
647
648 /* Parameter validation */
649
650 if (!DeviceHandle || !UserFunction || !Name ||
651 (!ACPI_COMPARE_NAME (Name, METHOD_NAME__CRS) &&
652 !ACPI_COMPARE_NAME (Name, METHOD_NAME__PRS)))
653 {
654 return_ACPI_STATUS (AE_BAD_PARAMETER);
655 }
656
657 /* Get the _CRS or _PRS resource list */
658
659 Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
660 Status = AcpiRsGetMethodData (DeviceHandle, Name, &Buffer);
661 if (ACPI_FAILURE (Status))
662 {
663 return_ACPI_STATUS (Status);
664 }
665
666 /* Buffer now contains the resource list */
667
668 Resource = ACPI_CAST_PTR (ACPI_RESOURCE, Buffer.Pointer);
669 ResourceEnd = ACPI_ADD_PTR (ACPI_RESOURCE, Buffer.Pointer, Buffer.Length);
670
671 /* Walk the resource list until the EndTag is found (or buffer end) */
672
673 while (Resource < ResourceEnd)
674 {
675 /* Sanity check the resource */
676
677 if (Resource->Type > ACPI_RESOURCE_TYPE_MAX)
678 {
679 Status = AE_AML_INVALID_RESOURCE_TYPE;
680 break;
681 }
682
683 /* Invoke the user function, abort on any error returned */
684
685 Status = UserFunction (Resource, Context);
686 if (ACPI_FAILURE (Status))
687 {
688 if (Status == AE_CTRL_TERMINATE)
689 {
690 /* This is an OK termination by the user function */
691
692 Status = AE_OK;
693 }
694 break;
695 }
696
697 /* EndTag indicates end-of-list */
698
699 if (Resource->Type == ACPI_RESOURCE_TYPE_END_TAG)
700 {
701 break;
702 }
703
704 /* Get the next resource descriptor */
705
706 Resource = ACPI_ADD_PTR (ACPI_RESOURCE, Resource, Resource->Length);
707 }
708
709 ACPI_FREE (Buffer.Pointer);
710 return_ACPI_STATUS (Status);
711}
712
713ACPI_EXPORT_SYMBOL (AcpiWalkResources)