xref: /openbmc/linux/drivers/acpi/acpica/rsmisc.c (revision b34e08d5)
1 /*******************************************************************************
2  *
3  * Module Name: rsmisc - Miscellaneous resource descriptors
4  *
5  ******************************************************************************/
6 
7 /*
8  * Copyright (C) 2000 - 2014, Intel Corp.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions, and the following disclaimer,
16  *    without modification.
17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18  *    substantially similar to the "NO WARRANTY" disclaimer below
19  *    ("Disclaimer") and any redistribution must be conditioned upon
20  *    including a substantially similar Disclaimer requirement for further
21  *    binary redistribution.
22  * 3. Neither the names of the above-listed copyright holders nor the names
23  *    of any contributors may be used to endorse or promote products derived
24  *    from this software without specific prior written permission.
25  *
26  * Alternatively, this software may be distributed under the terms of the
27  * GNU General Public License ("GPL") version 2 as published by the Free
28  * Software Foundation.
29  *
30  * NO WARRANTY
31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41  * POSSIBILITY OF SUCH DAMAGES.
42  */
43 
44 #include <acpi/acpi.h>
45 #include "accommon.h"
46 #include "acresrc.h"
47 
48 #define _COMPONENT          ACPI_RESOURCES
49 ACPI_MODULE_NAME("rsmisc")
50 #define INIT_RESOURCE_TYPE(i)       i->resource_offset
51 #define INIT_RESOURCE_LENGTH(i)     i->aml_offset
52 #define INIT_TABLE_LENGTH(i)        i->value
53 #define COMPARE_OPCODE(i)           i->resource_offset
54 #define COMPARE_TARGET(i)           i->aml_offset
55 #define COMPARE_VALUE(i)            i->value
56 /*******************************************************************************
57  *
58  * FUNCTION:    acpi_rs_convert_aml_to_resource
59  *
60  * PARAMETERS:  resource            - Pointer to the resource descriptor
61  *              aml                 - Where the AML descriptor is returned
62  *              info                - Pointer to appropriate conversion table
63  *
64  * RETURN:      Status
65  *
66  * DESCRIPTION: Convert an external AML resource descriptor to the corresponding
67  *              internal resource descriptor
68  *
69  ******************************************************************************/
70 acpi_status
71 acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
72 				union aml_resource *aml,
73 				struct acpi_rsconvert_info *info)
74 {
75 	acpi_rs_length aml_resource_length;
76 	void *source;
77 	void *destination;
78 	char *target;
79 	u8 count;
80 	u8 flags_mode = FALSE;
81 	u16 item_count = 0;
82 	u16 temp16 = 0;
83 
84 	ACPI_FUNCTION_TRACE(rs_convert_aml_to_resource);
85 
86 	if (!info) {
87 		return_ACPI_STATUS(AE_BAD_PARAMETER);
88 	}
89 
90 	if (((acpi_size) resource) & 0x3) {
91 
92 		/* Each internal resource struct is expected to be 32-bit aligned */
93 
94 		ACPI_WARNING((AE_INFO,
95 			      "Misaligned resource pointer (get): %p Type 0x%2.2X Length %u",
96 			      resource, resource->type, resource->length));
97 	}
98 
99 	/* Extract the resource Length field (does not include header length) */
100 
101 	aml_resource_length = acpi_ut_get_resource_length(aml);
102 
103 	/*
104 	 * First table entry must be ACPI_RSC_INITxxx and must contain the
105 	 * table length (# of table entries)
106 	 */
107 	count = INIT_TABLE_LENGTH(info);
108 	while (count) {
109 		/*
110 		 * Source is the external AML byte stream buffer,
111 		 * destination is the internal resource descriptor
112 		 */
113 		source = ACPI_ADD_PTR(void, aml, info->aml_offset);
114 		destination =
115 		    ACPI_ADD_PTR(void, resource, info->resource_offset);
116 
117 		switch (info->opcode) {
118 		case ACPI_RSC_INITGET:
119 			/*
120 			 * Get the resource type and the initial (minimum) length
121 			 */
122 			ACPI_MEMSET(resource, 0, INIT_RESOURCE_LENGTH(info));
123 			resource->type = INIT_RESOURCE_TYPE(info);
124 			resource->length = INIT_RESOURCE_LENGTH(info);
125 			break;
126 
127 		case ACPI_RSC_INITSET:
128 			break;
129 
130 		case ACPI_RSC_FLAGINIT:
131 
132 			flags_mode = TRUE;
133 			break;
134 
135 		case ACPI_RSC_1BITFLAG:
136 			/*
137 			 * Mask and shift the flag bit
138 			 */
139 			ACPI_SET8(destination,
140 				  ((ACPI_GET8(source) >> info->value) & 0x01));
141 			break;
142 
143 		case ACPI_RSC_2BITFLAG:
144 			/*
145 			 * Mask and shift the flag bits
146 			 */
147 			ACPI_SET8(destination,
148 				  ((ACPI_GET8(source) >> info->value) & 0x03));
149 			break;
150 
151 		case ACPI_RSC_3BITFLAG:
152 			/*
153 			 * Mask and shift the flag bits
154 			 */
155 			ACPI_SET8(destination,
156 				  ((ACPI_GET8(source) >> info->value) & 0x07));
157 			break;
158 
159 		case ACPI_RSC_COUNT:
160 
161 			item_count = ACPI_GET8(source);
162 			ACPI_SET8(destination, item_count);
163 
164 			resource->length = resource->length +
165 			    (info->value * (item_count - 1));
166 			break;
167 
168 		case ACPI_RSC_COUNT16:
169 
170 			item_count = aml_resource_length;
171 			ACPI_SET16(destination, item_count);
172 
173 			resource->length = resource->length +
174 			    (info->value * (item_count - 1));
175 			break;
176 
177 		case ACPI_RSC_COUNT_GPIO_PIN:
178 
179 			target = ACPI_ADD_PTR(void, aml, info->value);
180 			item_count = ACPI_GET16(target) - ACPI_GET16(source);
181 
182 			resource->length = resource->length + item_count;
183 			item_count = item_count / 2;
184 			ACPI_SET16(destination, item_count);
185 			break;
186 
187 		case ACPI_RSC_COUNT_GPIO_VEN:
188 
189 			item_count = ACPI_GET8(source);
190 			ACPI_SET8(destination, item_count);
191 
192 			resource->length = resource->length +
193 			    (info->value * item_count);
194 			break;
195 
196 		case ACPI_RSC_COUNT_GPIO_RES:
197 			/*
198 			 * Vendor data is optional (length/offset may both be zero)
199 			 * Examine vendor data length field first
200 			 */
201 			target = ACPI_ADD_PTR(void, aml, (info->value + 2));
202 			if (ACPI_GET16(target)) {
203 
204 				/* Use vendor offset to get resource source length */
205 
206 				target = ACPI_ADD_PTR(void, aml, info->value);
207 				item_count =
208 				    ACPI_GET16(target) - ACPI_GET16(source);
209 			} else {
210 				/* No vendor data to worry about */
211 
212 				item_count = aml->large_header.resource_length +
213 				    sizeof(struct aml_resource_large_header) -
214 				    ACPI_GET16(source);
215 			}
216 
217 			resource->length = resource->length + item_count;
218 			ACPI_SET16(destination, item_count);
219 			break;
220 
221 		case ACPI_RSC_COUNT_SERIAL_VEN:
222 
223 			item_count = ACPI_GET16(source) - info->value;
224 
225 			resource->length = resource->length + item_count;
226 			ACPI_SET16(destination, item_count);
227 			break;
228 
229 		case ACPI_RSC_COUNT_SERIAL_RES:
230 
231 			item_count = (aml_resource_length +
232 				      sizeof(struct aml_resource_large_header))
233 			    - ACPI_GET16(source) - info->value;
234 
235 			resource->length = resource->length + item_count;
236 			ACPI_SET16(destination, item_count);
237 			break;
238 
239 		case ACPI_RSC_LENGTH:
240 
241 			resource->length = resource->length + info->value;
242 			break;
243 
244 		case ACPI_RSC_MOVE8:
245 		case ACPI_RSC_MOVE16:
246 		case ACPI_RSC_MOVE32:
247 		case ACPI_RSC_MOVE64:
248 			/*
249 			 * Raw data move. Use the Info value field unless item_count has
250 			 * been previously initialized via a COUNT opcode
251 			 */
252 			if (info->value) {
253 				item_count = info->value;
254 			}
255 			acpi_rs_move_data(destination, source, item_count,
256 					  info->opcode);
257 			break;
258 
259 		case ACPI_RSC_MOVE_GPIO_PIN:
260 
261 			/* Generate and set the PIN data pointer */
262 
263 			target = (char *)ACPI_ADD_PTR(void, resource,
264 						      (resource->length -
265 						       item_count * 2));
266 			*(u16 **)destination = ACPI_CAST_PTR(u16, target);
267 
268 			/* Copy the PIN data */
269 
270 			source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source));
271 			acpi_rs_move_data(target, source, item_count,
272 					  info->opcode);
273 			break;
274 
275 		case ACPI_RSC_MOVE_GPIO_RES:
276 
277 			/* Generate and set the resource_source string pointer */
278 
279 			target = (char *)ACPI_ADD_PTR(void, resource,
280 						      (resource->length -
281 						       item_count));
282 			*(u8 **)destination = ACPI_CAST_PTR(u8, target);
283 
284 			/* Copy the resource_source string */
285 
286 			source = ACPI_ADD_PTR(void, aml, ACPI_GET16(source));
287 			acpi_rs_move_data(target, source, item_count,
288 					  info->opcode);
289 			break;
290 
291 		case ACPI_RSC_MOVE_SERIAL_VEN:
292 
293 			/* Generate and set the Vendor Data pointer */
294 
295 			target = (char *)ACPI_ADD_PTR(void, resource,
296 						      (resource->length -
297 						       item_count));
298 			*(u8 **)destination = ACPI_CAST_PTR(u8, target);
299 
300 			/* Copy the Vendor Data */
301 
302 			source = ACPI_ADD_PTR(void, aml, info->value);
303 			acpi_rs_move_data(target, source, item_count,
304 					  info->opcode);
305 			break;
306 
307 		case ACPI_RSC_MOVE_SERIAL_RES:
308 
309 			/* Generate and set the resource_source string pointer */
310 
311 			target = (char *)ACPI_ADD_PTR(void, resource,
312 						      (resource->length -
313 						       item_count));
314 			*(u8 **)destination = ACPI_CAST_PTR(u8, target);
315 
316 			/* Copy the resource_source string */
317 
318 			source =
319 			    ACPI_ADD_PTR(void, aml,
320 					 (ACPI_GET16(source) + info->value));
321 			acpi_rs_move_data(target, source, item_count,
322 					  info->opcode);
323 			break;
324 
325 		case ACPI_RSC_SET8:
326 
327 			ACPI_MEMSET(destination, info->aml_offset, info->value);
328 			break;
329 
330 		case ACPI_RSC_DATA8:
331 
332 			target = ACPI_ADD_PTR(char, resource, info->value);
333 			ACPI_MEMCPY(destination, source, ACPI_GET16(target));
334 			break;
335 
336 		case ACPI_RSC_ADDRESS:
337 			/*
338 			 * Common handler for address descriptor flags
339 			 */
340 			if (!acpi_rs_get_address_common(resource, aml)) {
341 				return_ACPI_STATUS
342 				    (AE_AML_INVALID_RESOURCE_TYPE);
343 			}
344 			break;
345 
346 		case ACPI_RSC_SOURCE:
347 			/*
348 			 * Optional resource_source (Index and String)
349 			 */
350 			resource->length +=
351 			    acpi_rs_get_resource_source(aml_resource_length,
352 							info->value,
353 							destination, aml, NULL);
354 			break;
355 
356 		case ACPI_RSC_SOURCEX:
357 			/*
358 			 * Optional resource_source (Index and String). This is the more
359 			 * complicated case used by the Interrupt() macro
360 			 */
361 			target = ACPI_ADD_PTR(char, resource,
362 					      info->aml_offset +
363 					      (item_count * 4));
364 
365 			resource->length +=
366 			    acpi_rs_get_resource_source(aml_resource_length,
367 							(acpi_rs_length)
368 							(((item_count -
369 							   1) * sizeof(u32)) +
370 							 info->value),
371 							destination, aml,
372 							target);
373 			break;
374 
375 		case ACPI_RSC_BITMASK:
376 			/*
377 			 * 8-bit encoded bitmask (DMA macro)
378 			 */
379 			item_count =
380 			    acpi_rs_decode_bitmask(ACPI_GET8(source),
381 						   destination);
382 			if (item_count) {
383 				resource->length += (item_count - 1);
384 			}
385 
386 			target = ACPI_ADD_PTR(char, resource, info->value);
387 			ACPI_SET8(target, item_count);
388 			break;
389 
390 		case ACPI_RSC_BITMASK16:
391 			/*
392 			 * 16-bit encoded bitmask (IRQ macro)
393 			 */
394 			ACPI_MOVE_16_TO_16(&temp16, source);
395 
396 			item_count =
397 			    acpi_rs_decode_bitmask(temp16, destination);
398 			if (item_count) {
399 				resource->length += (item_count - 1);
400 			}
401 
402 			target = ACPI_ADD_PTR(char, resource, info->value);
403 			ACPI_SET8(target, item_count);
404 			break;
405 
406 		case ACPI_RSC_EXIT_NE:
407 			/*
408 			 * control - Exit conversion if not equal
409 			 */
410 			switch (info->resource_offset) {
411 			case ACPI_RSC_COMPARE_AML_LENGTH:
412 
413 				if (aml_resource_length != info->value) {
414 					goto exit;
415 				}
416 				break;
417 
418 			case ACPI_RSC_COMPARE_VALUE:
419 
420 				if (ACPI_GET8(source) != info->value) {
421 					goto exit;
422 				}
423 				break;
424 
425 			default:
426 
427 				ACPI_ERROR((AE_INFO,
428 					    "Invalid conversion sub-opcode"));
429 				return_ACPI_STATUS(AE_BAD_PARAMETER);
430 			}
431 			break;
432 
433 		default:
434 
435 			ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
436 			return_ACPI_STATUS(AE_BAD_PARAMETER);
437 		}
438 
439 		count--;
440 		info++;
441 	}
442 
443 exit:
444 	if (!flags_mode) {
445 
446 		/* Round the resource struct length up to the next boundary (32 or 64) */
447 
448 		resource->length =
449 		    (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length);
450 	}
451 	return_ACPI_STATUS(AE_OK);
452 }
453 
454 /*******************************************************************************
455  *
456  * FUNCTION:    acpi_rs_convert_resource_to_aml
457  *
458  * PARAMETERS:  resource            - Pointer to the resource descriptor
459  *              aml                 - Where the AML descriptor is returned
460  *              info                - Pointer to appropriate conversion table
461  *
462  * RETURN:      Status
463  *
464  * DESCRIPTION: Convert an internal resource descriptor to the corresponding
465  *              external AML resource descriptor.
466  *
467  ******************************************************************************/
468 
469 acpi_status
470 acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
471 				union aml_resource *aml,
472 				struct acpi_rsconvert_info *info)
473 {
474 	void *source = NULL;
475 	void *destination;
476 	char *target;
477 	acpi_rsdesc_size aml_length = 0;
478 	u8 count;
479 	u16 temp16 = 0;
480 	u16 item_count = 0;
481 
482 	ACPI_FUNCTION_TRACE(rs_convert_resource_to_aml);
483 
484 	if (!info) {
485 		return_ACPI_STATUS(AE_BAD_PARAMETER);
486 	}
487 
488 	/*
489 	 * First table entry must be ACPI_RSC_INITxxx and must contain the
490 	 * table length (# of table entries)
491 	 */
492 	count = INIT_TABLE_LENGTH(info);
493 
494 	while (count) {
495 		/*
496 		 * Source is the internal resource descriptor,
497 		 * destination is the external AML byte stream buffer
498 		 */
499 		source = ACPI_ADD_PTR(void, resource, info->resource_offset);
500 		destination = ACPI_ADD_PTR(void, aml, info->aml_offset);
501 
502 		switch (info->opcode) {
503 		case ACPI_RSC_INITSET:
504 
505 			ACPI_MEMSET(aml, 0, INIT_RESOURCE_LENGTH(info));
506 			aml_length = INIT_RESOURCE_LENGTH(info);
507 			acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
508 						    aml_length, aml);
509 			break;
510 
511 		case ACPI_RSC_INITGET:
512 			break;
513 
514 		case ACPI_RSC_FLAGINIT:
515 			/*
516 			 * Clear the flag byte
517 			 */
518 			ACPI_SET8(destination, 0);
519 			break;
520 
521 		case ACPI_RSC_1BITFLAG:
522 			/*
523 			 * Mask and shift the flag bit
524 			 */
525 			ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)
526 				     ((ACPI_GET8(source) & 0x01) << info->
527 				      value));
528 			break;
529 
530 		case ACPI_RSC_2BITFLAG:
531 			/*
532 			 * Mask and shift the flag bits
533 			 */
534 			ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)
535 				     ((ACPI_GET8(source) & 0x03) << info->
536 				      value));
537 			break;
538 
539 		case ACPI_RSC_3BITFLAG:
540 			/*
541 			 * Mask and shift the flag bits
542 			 */
543 			ACPI_SET_BIT(*ACPI_CAST8(destination), (u8)
544 				     ((ACPI_GET8(source) & 0x07) << info->
545 				      value));
546 			break;
547 
548 		case ACPI_RSC_COUNT:
549 
550 			item_count = ACPI_GET8(source);
551 			ACPI_SET8(destination, item_count);
552 
553 			aml_length =
554 			    (u16) (aml_length +
555 				   (info->value * (item_count - 1)));
556 			break;
557 
558 		case ACPI_RSC_COUNT16:
559 
560 			item_count = ACPI_GET16(source);
561 			aml_length = (u16) (aml_length + item_count);
562 			acpi_rs_set_resource_length(aml_length, aml);
563 			break;
564 
565 		case ACPI_RSC_COUNT_GPIO_PIN:
566 
567 			item_count = ACPI_GET16(source);
568 			ACPI_SET16(destination, aml_length);
569 
570 			aml_length = (u16)(aml_length + item_count * 2);
571 			target = ACPI_ADD_PTR(void, aml, info->value);
572 			ACPI_SET16(target, aml_length);
573 			acpi_rs_set_resource_length(aml_length, aml);
574 			break;
575 
576 		case ACPI_RSC_COUNT_GPIO_VEN:
577 
578 			item_count = ACPI_GET16(source);
579 			ACPI_SET16(destination, item_count);
580 
581 			aml_length =
582 			    (u16)(aml_length + (info->value * item_count));
583 			acpi_rs_set_resource_length(aml_length, aml);
584 			break;
585 
586 		case ACPI_RSC_COUNT_GPIO_RES:
587 
588 			/* Set resource source string length */
589 
590 			item_count = ACPI_GET16(source);
591 			ACPI_SET16(destination, aml_length);
592 
593 			/* Compute offset for the Vendor Data */
594 
595 			aml_length = (u16)(aml_length + item_count);
596 			target = ACPI_ADD_PTR(void, aml, info->value);
597 
598 			/* Set vendor offset only if there is vendor data */
599 
600 			if (resource->data.gpio.vendor_length) {
601 				ACPI_SET16(target, aml_length);
602 			}
603 
604 			acpi_rs_set_resource_length(aml_length, aml);
605 			break;
606 
607 		case ACPI_RSC_COUNT_SERIAL_VEN:
608 
609 			item_count = ACPI_GET16(source);
610 			ACPI_SET16(destination, item_count + info->value);
611 			aml_length = (u16)(aml_length + item_count);
612 			acpi_rs_set_resource_length(aml_length, aml);
613 			break;
614 
615 		case ACPI_RSC_COUNT_SERIAL_RES:
616 
617 			item_count = ACPI_GET16(source);
618 			aml_length = (u16)(aml_length + item_count);
619 			acpi_rs_set_resource_length(aml_length, aml);
620 			break;
621 
622 		case ACPI_RSC_LENGTH:
623 
624 			acpi_rs_set_resource_length(info->value, aml);
625 			break;
626 
627 		case ACPI_RSC_MOVE8:
628 		case ACPI_RSC_MOVE16:
629 		case ACPI_RSC_MOVE32:
630 		case ACPI_RSC_MOVE64:
631 
632 			if (info->value) {
633 				item_count = info->value;
634 			}
635 			acpi_rs_move_data(destination, source, item_count,
636 					  info->opcode);
637 			break;
638 
639 		case ACPI_RSC_MOVE_GPIO_PIN:
640 
641 			destination = (char *)ACPI_ADD_PTR(void, aml,
642 							   ACPI_GET16
643 							   (destination));
644 			source = *(u16 **)source;
645 			acpi_rs_move_data(destination, source, item_count,
646 					  info->opcode);
647 			break;
648 
649 		case ACPI_RSC_MOVE_GPIO_RES:
650 
651 			/* Used for both resource_source string and vendor_data */
652 
653 			destination = (char *)ACPI_ADD_PTR(void, aml,
654 							   ACPI_GET16
655 							   (destination));
656 			source = *(u8 **)source;
657 			acpi_rs_move_data(destination, source, item_count,
658 					  info->opcode);
659 			break;
660 
661 		case ACPI_RSC_MOVE_SERIAL_VEN:
662 
663 			destination = (char *)ACPI_ADD_PTR(void, aml,
664 							   (aml_length -
665 							    item_count));
666 			source = *(u8 **)source;
667 			acpi_rs_move_data(destination, source, item_count,
668 					  info->opcode);
669 			break;
670 
671 		case ACPI_RSC_MOVE_SERIAL_RES:
672 
673 			destination = (char *)ACPI_ADD_PTR(void, aml,
674 							   (aml_length -
675 							    item_count));
676 			source = *(u8 **)source;
677 			acpi_rs_move_data(destination, source, item_count,
678 					  info->opcode);
679 			break;
680 
681 		case ACPI_RSC_ADDRESS:
682 
683 			/* Set the Resource Type, General Flags, and Type-Specific Flags */
684 
685 			acpi_rs_set_address_common(aml, resource);
686 			break;
687 
688 		case ACPI_RSC_SOURCEX:
689 			/*
690 			 * Optional resource_source (Index and String)
691 			 */
692 			aml_length =
693 			    acpi_rs_set_resource_source(aml,
694 							(acpi_rs_length)
695 							aml_length, source);
696 			acpi_rs_set_resource_length(aml_length, aml);
697 			break;
698 
699 		case ACPI_RSC_SOURCE:
700 			/*
701 			 * Optional resource_source (Index and String). This is the more
702 			 * complicated case used by the Interrupt() macro
703 			 */
704 			aml_length =
705 			    acpi_rs_set_resource_source(aml, info->value,
706 							source);
707 			acpi_rs_set_resource_length(aml_length, aml);
708 			break;
709 
710 		case ACPI_RSC_BITMASK:
711 			/*
712 			 * 8-bit encoded bitmask (DMA macro)
713 			 */
714 			ACPI_SET8(destination,
715 				  acpi_rs_encode_bitmask(source,
716 							 *ACPI_ADD_PTR(u8,
717 								       resource,
718 								       info->
719 								       value)));
720 			break;
721 
722 		case ACPI_RSC_BITMASK16:
723 			/*
724 			 * 16-bit encoded bitmask (IRQ macro)
725 			 */
726 			temp16 = acpi_rs_encode_bitmask(source,
727 							*ACPI_ADD_PTR(u8,
728 								      resource,
729 								      info->
730 								      value));
731 			ACPI_MOVE_16_TO_16(destination, &temp16);
732 			break;
733 
734 		case ACPI_RSC_EXIT_LE:
735 			/*
736 			 * control - Exit conversion if less than or equal
737 			 */
738 			if (item_count <= info->value) {
739 				goto exit;
740 			}
741 			break;
742 
743 		case ACPI_RSC_EXIT_NE:
744 			/*
745 			 * control - Exit conversion if not equal
746 			 */
747 			switch (COMPARE_OPCODE(info)) {
748 			case ACPI_RSC_COMPARE_VALUE:
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,
760 					    "Invalid conversion sub-opcode"));
761 				return_ACPI_STATUS(AE_BAD_PARAMETER);
762 			}
763 			break;
764 
765 		case ACPI_RSC_EXIT_EQ:
766 			/*
767 			 * control - Exit conversion if equal
768 			 */
769 			if (*ACPI_ADD_PTR(u8, resource,
770 					  COMPARE_TARGET(info)) ==
771 			    COMPARE_VALUE(info)) {
772 				goto exit;
773 			}
774 			break;
775 
776 		default:
777 
778 			ACPI_ERROR((AE_INFO, "Invalid conversion opcode"));
779 			return_ACPI_STATUS(AE_BAD_PARAMETER);
780 		}
781 
782 		count--;
783 		info++;
784 	}
785 
786 exit:
787 	return_ACPI_STATUS(AE_OK);
788 }
789 
790 #if 0
791 /* Previous resource validations */
792 
793 if (aml->ext_address64.revision_ID != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
794 	return_ACPI_STATUS(AE_SUPPORT);
795 }
796 
797 if (resource->data.start_dpf.performance_robustness >= 3) {
798 	return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
799 }
800 
801 if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {
802 	/*
803 	 * Only [active_high, edge_sensitive] or [active_low, level_sensitive]
804 	 * polarity/trigger interrupts are allowed (ACPI spec, section
805 	 * "IRQ Format"), so 0x00 and 0x09 are illegal.
806 	 */
807 	ACPI_ERROR((AE_INFO,
808 		    "Invalid interrupt polarity/trigger in resource list, 0x%X",
809 		    aml->irq.flags));
810 	return_ACPI_STATUS(AE_BAD_DATA);
811 }
812 
813 resource->data.extended_irq.interrupt_count = temp8;
814 if (temp8 < 1) {
815 
816 	/* Must have at least one IRQ */
817 
818 	return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
819 }
820 
821 if (resource->data.dma.transfer == 0x03) {
822 	ACPI_ERROR((AE_INFO, "Invalid DMA.Transfer preference (3)"));
823 	return_ACPI_STATUS(AE_BAD_DATA);
824 }
825 #endif
826