1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2/*******************************************************************************
3 *
4 * Module Name: rsmisc - Miscellaneous resource descriptors
5 *
6 ******************************************************************************/
7
8#include <acpi/acpi.h>
9#include "accommon.h"
10#include "acresrc.h"
11
12#define _COMPONENT ACPI_RESOURCES
13ACPI_MODULE_NAME("rsmisc")
14#define INIT_RESOURCE_TYPE(i) i->resource_offset
15#define INIT_RESOURCE_LENGTH(i) i->aml_offset
16#define INIT_TABLE_LENGTH(i) i->value
17#define COMPARE_OPCODE(i) i->resource_offset
18#define COMPARE_TARGET(i) i->aml_offset
19#define COMPARE_VALUE(i) i->value
20/*******************************************************************************
21 *
22 * FUNCTION: acpi_rs_convert_aml_to_resource
23 *
24 * PARAMETERS: resource - Pointer to the resource descriptor
25 * aml - Where the AML descriptor is returned
26 * info - Pointer to appropriate conversion table
27 *
28 * RETURN: Status
29 *
30 * DESCRIPTION: Convert an external AML resource descriptor to the corresponding
31 * internal resource descriptor
32 *
33 ******************************************************************************/
34acpi_status
35acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
36 union aml_resource *aml,
37 struct acpi_rsconvert_info *info)
38{
39 acpi_rs_length aml_resource_length;
40 void *source;
41 void *destination;
42 char *target;
43 u8 count;
44 u8 flags_mode = FALSE;
45 u16 item_count = 0;
46 u16 temp16 = 0;
47
48 ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource);
49
50 if (!info) {
51 return_ACPI_STATUS(AE_BAD_PARAMETER);
52 }
53
54 if (((acpi_size)resource) & 0x3) {
55
56 /* Each internal resource struct is expected to be 32-bit aligned */
57
58 ACPI_WARNING((AE_INFO,
59 "Misaligned resource pointer (get): %p Type 0x%2.2X Length %u",
60 resource, resource->type, resource->length));
61 }
62
63 /* Extract the resource Length field (does not include header length) */
64
65 aml_resource_length = acpi_ut_get_resource_length(aml);
66
67 /*
68 * First table entry must be ACPI_RSC_INITxxx and must contain the
69 * table length (# of table entries)
70 */
71 count = INIT_TABLE_LENGTH(info);
72 while (count) {
73 target = NULL;
74
75 /*
76 * Source is the external AML byte stream buffer,
77 * destination is the internal resource descriptor
78 */
79 source = ACPI_ADD_PTR(void, aml, info->aml_offset);
80 destination =
81 ACPI_ADD_PTR(void, resource, info->resource_offset);
82
83 switch (info->opcode) {
84 case ACPI_RSC_INITGET:
85 /*
86 * Get the resource type and the initial (minimum) length
87 */
88 memset(s: resource, c: 0, INIT_RESOURCE_LENGTH(info));
89 resource->type = INIT_RESOURCE_TYPE(info);
90 resource->length = INIT_RESOURCE_LENGTH(info);
91 break;
92
93 case ACPI_RSC_INITSET:
94 break;
95
96 case ACPI_RSC_FLAGINIT:
97
98 flags_mode = TRUE;
99 break;
100
101 case ACPI_RSC_1BITFLAG:
102 /*
103 * Mask and shift the flag bit
104 */
105 ACPI_SET8(destination,
106 ((ACPI_GET8(source) >> info->value) & 0x01));
107 break;
108
109 case ACPI_RSC_2BITFLAG:
110 /*
111 * Mask and shift the flag bits
112 */
113 ACPI_SET8(destination,
114 ((ACPI_GET8(source) >> info->value) & 0x03));
115 break;
116
117 case ACPI_RSC_3BITFLAG:
118 /*
119 * Mask and shift the flag bits
120 */
121 ACPI_SET8(destination,
122 ((ACPI_GET8(source) >> info->value) & 0x07));
123 break;
124
125 case ACPI_RSC_6BITFLAG:
126 /*
127 * Mask and shift the flag bits
128 */
129 ACPI_SET8(destination,
130 ((ACPI_GET8(source) >> info->value) & 0x3F));
131 break;
132
133 case ACPI_RSC_COUNT:
134
135 item_count = ACPI_GET8(source);
136 ACPI_SET8(destination, item_count);
137
138 resource->length = resource->length +
139 (info->value * (item_count - 1));
140 break;
141
142 case ACPI_RSC_COUNT16:
143
144 item_count = aml_resource_length;
145 ACPI_SET16(destination, item_count);
146
147 resource->length = resource->length +
148 (info->value * (item_count - 1));
149 break;
150
151 case ACPI_RSC_COUNT_GPIO_PIN:
152
153 target = ACPI_ADD_PTR(void, aml, info->value);
154 item_count = ACPI_GET16(target) - ACPI_GET16(source);
155
156 resource->length = resource->length + item_count;
157 item_count = item_count / 2;
158 ACPI_SET16(destination, item_count);
159 break;
160
161 case ACPI_RSC_COUNT_GPIO_VEN:
162
163 item_count = ACPI_GET8(source);
164 ACPI_SET8(destination, item_count);
165
166 resource->length =
167 resource->length + (info->value * item_count);
168 break;
169
170 case ACPI_RSC_COUNT_GPIO_RES:
171 /*
172 * Vendor data is optional (length/offset may both be zero)
173 * Examine vendor data length field first
174 */
175 target = ACPI_ADD_PTR(void, aml, (info->value + 2));
176 if (ACPI_GET16(target)) {
177
178 /* Use vendor offset to get resource source length */
179
180 target = ACPI_ADD_PTR(void, aml, info->value);
181 item_count =
182 ACPI_GET16(target) - ACPI_GET16(source);
183 } else {
184 /* No vendor data to worry about */
185
186 item_count = aml->large_header.resource_length +
187 sizeof(struct aml_resource_large_header) -
188 ACPI_GET16(source);
189 }
190
191 resource->length = resource->length + item_count;
192 ACPI_SET16(destination, item_count);
193 break;
194
195 case ACPI_RSC_COUNT_SERIAL_VEN:
196
197 ACPI_MOVE_16_TO_16(&temp16, source);
198 item_count = temp16 - info->value;
199
200 resource->length = resource->length + item_count;
201 ACPI_SET16(destination, item_count);
202 break;
203
204 case ACPI_RSC_COUNT_SERIAL_RES:
205
206 ACPI_MOVE_16_TO_16(&temp16, source);
207 item_count = (aml_resource_length +
208 sizeof(struct aml_resource_large_header))
209 - temp16 - info->value;
210
211 resource->length = resource->length + item_count;
212 ACPI_SET16(destination, item_count);
213 break;
214
215 case ACPI_RSC_LENGTH:
216
217 resource->length = resource->length + info->value;
218 break;
219
220 case ACPI_RSC_MOVE8:
221 case ACPI_RSC_MOVE16:
222 case ACPI_RSC_MOVE32:
223 case ACPI_RSC_MOVE64:
224 /*
225 * Raw data move. Use the Info value field unless item_count has
226 * been previously initialized via a COUNT opcode
227 */
228 if (info->value) {
229 item_count = info->value;
230 }
231 acpi_rs_move_data(destination, source, item_count,
232 move_type: info->opcode);
233 break;
234
235 case ACPI_RSC_MOVE_GPIO_PIN:
236
237 /* Generate and set the PIN data pointer */
238
239 target = (char *)ACPI_ADD_PTR(void, resource,
240 (resource->length -
241 item_count * 2));
242 *(u16 **)destination = ACPI_CAST_PTR(u16, target);
243
244 /* Copy the PIN data */
245
246 source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source));
247 acpi_rs_move_data(destination: target, source, item_count,
248 move_type: info->opcode);
249 break;
250
251 case ACPI_RSC_MOVE_GPIO_RES:
252
253 /* Generate and set the resource_source string pointer */
254
255 target = (char *)ACPI_ADD_PTR(void, resource,
256 (resource->length -
257 item_count));
258 *(u8 **)destination = ACPI_CAST_PTR(u8, target);
259
260 /* Copy the resource_source string */
261
262 source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source));
263 acpi_rs_move_data(destination: target, source, item_count,
264 move_type: info->opcode);
265 break;
266
267 case ACPI_RSC_MOVE_SERIAL_VEN:
268
269 /* Generate and set the Vendor Data pointer */
270
271 target = (char *)ACPI_ADD_PTR(void, resource,
272 (resource->length -
273 item_count));
274 *(u8 **)destination = ACPI_CAST_PTR(u8, target);
275
276 /* Copy the Vendor Data */
277
278 source = ACPI_ADD_PTR(void, aml, info->value);
279 acpi_rs_move_data(destination: target, source, item_count,
280 move_type: info->opcode);
281 break;
282
283 case ACPI_RSC_MOVE_SERIAL_RES:
284
285 /* Generate and set the resource_source string pointer */
286
287 target = (char *)ACPI_ADD_PTR(void, resource,
288 (resource->length -
289 item_count));
290 *(u8 **)destination = ACPI_CAST_PTR(u8, target);
291
292 /* Copy the resource_source string */
293
294 ACPI_MOVE_16_TO_16(&temp16, source);
295 source =
296 ACPI_ADD_PTR(void, aml, (temp16 + info->value));
297 acpi_rs_move_data(destination: target, source, item_count,
298 move_type: info->opcode);
299 break;
300
301 case ACPI_RSC_SET8:
302
303 memset(s: destination, c: info->aml_offset, n: info->value);
304 break;
305
306 case ACPI_RSC_DATA8:
307
308 target = ACPI_ADD_PTR(char, resource, info->value);
309 memcpy(to: destination, from: source, ACPI_GET16(target));
310 break;
311
312 case ACPI_RSC_ADDRESS:
313 /*
314 * Common handler for address descriptor flags
315 */
316 if (!acpi_rs_get_address_common(resource, aml)) {
317 return_ACPI_STATUS
318 (AE_AML_INVALID_RESOURCE_TYPE);
319 }
320 break;
321
322 case ACPI_RSC_SOURCE:
323 /*
324 * Optional resource_source (Index and String)
325 */
326 resource->length +=
327 acpi_rs_get_resource_source(resource_length: aml_resource_length,
328 minimum_length: info->value,
329 resource_source: destination, aml, NULL);
330 break;
331
332 case ACPI_RSC_SOURCEX:
333 /*
334 * Optional resource_source (Index and String). This is the more
335 * complicated case used by the Interrupt() macro
336 */
337 target = ACPI_ADD_PTR(char, resource,
338 info->aml_offset +
339 (item_count * 4));
340
341 resource->length +=
342 acpi_rs_get_resource_source(resource_length: aml_resource_length,
343 minimum_length: (acpi_rs_length)
344 (((item_count -
345 1) * sizeof(u32)) +
346 info->value),
347 resource_source: destination, aml,
348 string_ptr: target);
349 break;
350
351 case ACPI_RSC_BITMASK:
352 /*
353 * 8-bit encoded bitmask (DMA macro)
354 */
355 item_count =
356 acpi_rs_decode_bitmask(ACPI_GET8(source),
357 list: destination);
358 if (item_count) {
359 resource->length += (item_count - 1);
360 }
361
362 target = ACPI_ADD_PTR(char, resource, info->value);
363 ACPI_SET8(target, item_count);
364 break;
365
366 case ACPI_RSC_BITMASK16:
367 /*
368 * 16-bit encoded bitmask (IRQ macro)
369 */
370 ACPI_MOVE_16_TO_16(&temp16, source);
371
372 item_count =
373 acpi_rs_decode_bitmask(mask: temp16, list: destination);
374 if (item_count) {
375 resource->length += (item_count - 1);
376 }
377
378 target = ACPI_ADD_PTR(char, resource, info->value);
379 ACPI_SET8(target, item_count);
380 break;
381
382 case ACPI_RSC_EXIT_NE:
383 /*
384 * control - Exit conversion if not equal
385 */
386 switch (info->resource_offset) {
387 case ACPI_RSC_COMPARE_AML_LENGTH:
388
389 if (aml_resource_length != info->value) {
390 goto exit;
391 }
392 break;
393
394 case ACPI_RSC_COMPARE_VALUE:
395
396 if (ACPI_GET8(source) != info->value) {
397 goto exit;
398 }
399 break;
400
401 default:
402
403 ACPI_ERROR((AE_INFO,
404 "Invalid conversion sub-opcode"));
405 return_ACPI_STATUS(AE_BAD_PARAMETER);
406 }
407 break;
408
409 default:
410
411 ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
412 return_ACPI_STATUS(AE_BAD_PARAMETER);
413 }
414
415 count--;
416 info++;
417 }
418
419exit:
420 if (!flags_mode) {
421
422 /* Round the resource struct length up to the next boundary (32 or 64) */
423
424 resource->length = (u32)
425 ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length);
426 }
427 return_ACPI_STATUS(AE_OK);
428}
429
430/*******************************************************************************
431 *
432 * FUNCTION: acpi_rs_convert_resource_to_aml
433 *
434 * PARAMETERS: resource - Pointer to the resource descriptor
435 * aml - Where the AML descriptor is returned
436 * info - Pointer to appropriate conversion table
437 *
438 * RETURN: Status
439 *
440 * DESCRIPTION: Convert an internal resource descriptor to the corresponding
441 * external AML resource descriptor.
442 *
443 ******************************************************************************/
444
445acpi_status
446acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
447 union aml_resource *aml,
448 struct acpi_rsconvert_info *info)
449{
450 void *source = NULL;
451 void *destination;
452 char *target;
453 acpi_rsdesc_size aml_length = 0;
454 u8 count;
455 u16 temp16 = 0;
456 u16 item_count = 0;
457
458 ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml);
459
460 if (!info) {
461 return_ACPI_STATUS(AE_BAD_PARAMETER);
462 }
463
464 /*
465 * First table entry must be ACPI_RSC_INITxxx and must contain the
466 * table length (# of table entries)
467 */
468 count = INIT_TABLE_LENGTH(info);
469
470 while (count) {
471 /*
472 * Source is the internal resource descriptor,
473 * destination is the external AML byte stream buffer
474 */
475 source = ACPI_ADD_PTR(void, resource, info->resource_offset);
476 destination = ACPI_ADD_PTR(void, aml, info->aml_offset);
477
478 switch (info->opcode) {
479 case ACPI_RSC_INITSET:
480
481 memset(s: aml, c: 0, INIT_RESOURCE_LENGTH(info));
482 aml_length = INIT_RESOURCE_LENGTH(info);
483 acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
484 total_length: aml_length, aml);
485 break;
486
487 case ACPI_RSC_INITGET:
488 break;
489
490 case ACPI_RSC_FLAGINIT:
491 /*
492 * Clear the flag byte
493 */
494 ACPI_SET8(destination, 0);
495 break;
496
497 case ACPI_RSC_1BITFLAG:
498 /*
499 * Mask and shift the flag bit
500 */
501 ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)
502 ((ACPI_GET8(source) & 0x01) << info->
503 value));
504 break;
505
506 case ACPI_RSC_2BITFLAG:
507 /*
508 * Mask and shift the flag bits
509 */
510 ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)
511 ((ACPI_GET8(source) & 0x03) << info->
512 value));
513 break;
514
515 case ACPI_RSC_3BITFLAG:
516 /*
517 * Mask and shift the flag bits
518 */
519 ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)
520 ((ACPI_GET8(source) & 0x07) << info->
521 value));
522 break;
523
524 case ACPI_RSC_6BITFLAG:
525 /*
526 * Mask and shift the flag bits
527 */
528 ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)
529 ((ACPI_GET8(source) & 0x3F) << info->
530 value));
531 break;
532
533 case ACPI_RSC_COUNT:
534
535 item_count = ACPI_GET8(source);
536 ACPI_SET8(destination, item_count);
537
538 aml_length = (u16)
539 (aml_length + (info->value * (item_count - 1)));
540 break;
541
542 case ACPI_RSC_COUNT16:
543
544 item_count = ACPI_GET16(source);
545 aml_length = (u16) (aml_length + item_count);
546 acpi_rs_set_resource_length(total_length: aml_length, aml);
547 break;
548
549 case ACPI_RSC_COUNT_GPIO_PIN:
550
551 item_count = ACPI_GET16(source);
552 ACPI_SET16(destination, aml_length);
553
554 aml_length = (u16)(aml_length + item_count * 2);
555 target = ACPI_ADD_PTR(void, aml, info->value);
556 ACPI_SET16(target, aml_length);
557 acpi_rs_set_resource_length(total_length: aml_length, aml);
558 break;
559
560 case ACPI_RSC_COUNT_GPIO_VEN:
561
562 item_count = ACPI_GET16(source);
563 ACPI_SET16(destination, item_count);
564
565 aml_length =
566 (u16)(aml_length + (info->value * item_count));
567 acpi_rs_set_resource_length(total_length: aml_length, aml);
568 break;
569
570 case ACPI_RSC_COUNT_GPIO_RES:
571
572 /* Set resource source string length */
573
574 item_count = ACPI_GET16(source);
575 ACPI_SET16(destination, aml_length);
576
577 /* Compute offset for the Vendor Data */
578
579 aml_length = (u16)(aml_length + item_count);
580 target = ACPI_ADD_PTR(void, aml, info->value);
581
582 /* Set vendor offset only if there is vendor data */
583
584 ACPI_SET16(target, aml_length);
585
586 acpi_rs_set_resource_length(total_length: aml_length, aml);
587 break;
588
589 case ACPI_RSC_COUNT_SERIAL_VEN:
590
591 item_count = ACPI_GET16(source);
592 ACPI_SET16(destination, item_count + info->value);
593 aml_length = (u16)(aml_length + item_count);
594 acpi_rs_set_resource_length(total_length: aml_length, aml);
595 break;
596
597 case ACPI_RSC_COUNT_SERIAL_RES:
598
599 item_count = ACPI_GET16(source);
600 aml_length = (u16)(aml_length + item_count);
601 acpi_rs_set_resource_length(total_length: aml_length, aml);
602 break;
603
604 case ACPI_RSC_LENGTH:
605
606 acpi_rs_set_resource_length(total_length: info->value, aml);
607 break;
608
609 case ACPI_RSC_MOVE8:
610 case ACPI_RSC_MOVE16:
611 case ACPI_RSC_MOVE32:
612 case ACPI_RSC_MOVE64:
613
614 if (info->value) {
615 item_count = info->value;
616 }
617 acpi_rs_move_data(destination, source, item_count,
618 move_type: info->opcode);
619 break;
620
621 case ACPI_RSC_MOVE_GPIO_PIN:
622
623 destination = (char *)ACPI_ADD_PTR(void, aml,
624 ACPI_GET16
625 (destination));
626 source = *(u16 **)source;
627 acpi_rs_move_data(destination, source, item_count,
628 move_type: info->opcode);
629 break;
630
631 case ACPI_RSC_MOVE_GPIO_RES:
632
633 /* Used for both resource_source string and vendor_data */
634
635 destination = (char *)ACPI_ADD_PTR(void, aml,
636 ACPI_GET16
637 (destination));
638 source = *(u8 **)source;
639 acpi_rs_move_data(destination, source, item_count,
640 move_type: info->opcode);
641 break;
642
643 case ACPI_RSC_MOVE_SERIAL_VEN:
644
645 destination = (char *)ACPI_ADD_PTR(void, aml,
646 (aml_length -
647 item_count));
648 source = *(u8 **)source;
649 acpi_rs_move_data(destination, source, item_count,
650 move_type: info->opcode);
651 break;
652
653 case ACPI_RSC_MOVE_SERIAL_RES:
654
655 destination = (char *)ACPI_ADD_PTR(void, aml,
656 (aml_length -
657 item_count));
658 source = *(u8 **)source;
659 acpi_rs_move_data(destination, source, item_count,
660 move_type: info->opcode);
661 break;
662
663 case ACPI_RSC_ADDRESS:
664
665 /* Set the Resource Type, General Flags, and Type-Specific Flags */
666
667 acpi_rs_set_address_common(aml, resource);
668 break;
669
670 case ACPI_RSC_SOURCEX:
671 /*
672 * Optional resource_source (Index and String)
673 */
674 aml_length =
675 acpi_rs_set_resource_source(aml,
676 minimum_length: (acpi_rs_length)
677 aml_length, resource_source: source);
678 acpi_rs_set_resource_length(total_length: aml_length, aml);
679 break;
680
681 case ACPI_RSC_SOURCE:
682 /*
683 * Optional resource_source (Index and String). This is the more
684 * complicated case used by the Interrupt() macro
685 */
686 aml_length =
687 acpi_rs_set_resource_source(aml, minimum_length: info->value,
688 resource_source: source);
689 acpi_rs_set_resource_length(total_length: aml_length, aml);
690 break;
691
692 case ACPI_RSC_BITMASK:
693 /*
694 * 8-bit encoded bitmask (DMA macro)
695 */
696 ACPI_SET8(destination,
697 acpi_rs_encode_bitmask(source,
698 *ACPI_ADD_PTR(u8,
699 resource,
700 info->
701 value)));
702 break;
703
704 case ACPI_RSC_BITMASK16:
705 /*
706 * 16-bit encoded bitmask (IRQ macro)
707 */
708 temp16 =
709 acpi_rs_encode_bitmask(list: source,
710 count: *ACPI_ADD_PTR(u8, resource,
711 info->value));
712 ACPI_MOVE_16_TO_16(destination, &temp16);
713 break;
714
715 case ACPI_RSC_EXIT_LE:
716 /*
717 * control - Exit conversion if less than or equal
718 */
719 if (item_count <= info->value) {
720 goto exit;
721 }
722 break;
723
724 case ACPI_RSC_EXIT_NE:
725 /*
726 * control - Exit conversion if not equal
727 */
728 switch (COMPARE_OPCODE(info)) {
729 case ACPI_RSC_COMPARE_VALUE:
730
731 if (*ACPI_ADD_PTR(u8, resource,
732 COMPARE_TARGET(info)) !=
733 COMPARE_VALUE(info)) {
734 goto exit;
735 }
736 break;
737
738 default:
739
740 ACPI_ERROR((AE_INFO,
741 "Invalid conversion sub-opcode"));
742 return_ACPI_STATUS(AE_BAD_PARAMETER);
743 }
744 break;
745
746 case ACPI_RSC_EXIT_EQ:
747 /*
748 * control - Exit conversion if equal
749 */
750 if (*ACPI_ADD_PTR(u8, resource,
751 COMPARE_TARGET(info)) ==
752 COMPARE_VALUE(info)) {
753 goto exit;
754 }
755 break;
756
757 default:
758
759 ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
760 return_ACPI_STATUS(AE_BAD_PARAMETER);
761 }
762
763 count--;
764 info++;
765 }
766
767exit:
768 return_ACPI_STATUS(AE_OK);
769}
770
771#if 0
772/* Previous resource validations */
773
774if (aml->ext_address64.revision_ID != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
775 return_ACPI_STATUS(AE_SUPPORT);
776}
777
778if (resource->data.start_dpf.performance_robustness >= 3) {
779 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
780}
781
782if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {
783 /*
784 * Only [active_high, edge_sensitive] or [active_low, level_sensitive]
785 * polarity/trigger interrupts are allowed (ACPI spec, section
786 * "IRQ Format"), so 0x00 and 0x09 are illegal.
787 */
788 ACPI_ERROR((AE_INFO,
789 "Invalid interrupt polarity/trigger in resource list, 0x%X",
790 aml->irq.flags));
791 return_ACPI_STATUS(AE_BAD_DATA);
792}
793
794resource->data.extended_irq.interrupt_count = temp8;
795if (temp8 < 1) {
796
797 /* Must have at least one IRQ */
798
799 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
800}
801
802if (resource->data.dma.transfer == 0x03) {
803 ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)"));
804 return_ACPI_STATUS(AE_BAD_DATA);
805}
806#endif
807