1 /******************************************************************************
2 *
3 * Module Name: tbdata - Table manager data structure functions
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2015, 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 "acnamesp.h"
47 #include "actables.h"
48
49 #define _COMPONENT ACPI_TABLES
50 ACPI_MODULE_NAME("tbdata")
51
52 /*******************************************************************************
53 *
54 * FUNCTION: acpi_tb_init_table_descriptor
55 *
56 * PARAMETERS: table_desc - Table descriptor
57 * address - Physical address of the table
58 * flags - Allocation flags of the table
59 * table - Pointer to the table
60 *
61 * RETURN: None
62 *
63 * DESCRIPTION: Initialize a new table descriptor
64 *
65 ******************************************************************************/
66 void
acpi_tb_init_table_descriptor(struct acpi_table_desc * table_desc,acpi_physical_address address,u8 flags,struct acpi_table_header * table)67 acpi_tb_init_table_descriptor(struct acpi_table_desc *table_desc,
68 acpi_physical_address address,
69 u8 flags, struct acpi_table_header *table)
70 {
71
72 /*
73 * Initialize the table descriptor. Set the pointer to NULL, since the
74 * table is not fully mapped at this time.
75 */
76 memset(table_desc, 0, sizeof(struct acpi_table_desc));
77 table_desc->address = address;
78 table_desc->length = table->length;
79 table_desc->flags = flags;
80 ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature);
81 }
82
83 /*******************************************************************************
84 *
85 * FUNCTION: acpi_tb_acquire_table
86 *
87 * PARAMETERS: table_desc - Table descriptor
88 * table_ptr - Where table is returned
89 * table_length - Where table length is returned
90 * table_flags - Where table allocation flags are returned
91 *
92 * RETURN: Status
93 *
94 * DESCRIPTION: Acquire an ACPI table. It can be used for tables not
95 * maintained in the acpi_gbl_root_table_list.
96 *
97 ******************************************************************************/
98
99 acpi_status
acpi_tb_acquire_table(struct acpi_table_desc * table_desc,struct acpi_table_header ** table_ptr,u32 * table_length,u8 * table_flags)100 acpi_tb_acquire_table(struct acpi_table_desc *table_desc,
101 struct acpi_table_header **table_ptr,
102 u32 *table_length, u8 *table_flags)
103 {
104 struct acpi_table_header *table = NULL;
105
106 switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
107 case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
108
109 table =
110 acpi_os_map_memory(table_desc->address, table_desc->length);
111 break;
112
113 case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
114 case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
115
116 table = ACPI_CAST_PTR(struct acpi_table_header,
117 ACPI_PHYSADDR_TO_PTR(table_desc->
118 address));
119 break;
120
121 default:
122
123 break;
124 }
125
126 /* Table is not valid yet */
127
128 if (!table) {
129 return (AE_NO_MEMORY);
130 }
131
132 /* Fill the return values */
133
134 *table_ptr = table;
135 *table_length = table_desc->length;
136 *table_flags = table_desc->flags;
137 return (AE_OK);
138 }
139
140 /*******************************************************************************
141 *
142 * FUNCTION: acpi_tb_release_table
143 *
144 * PARAMETERS: table - Pointer for the table
145 * table_length - Length for the table
146 * table_flags - Allocation flags for the table
147 *
148 * RETURN: None
149 *
150 * DESCRIPTION: Release a table. The inverse of acpi_tb_acquire_table().
151 *
152 ******************************************************************************/
153
154 void
acpi_tb_release_table(struct acpi_table_header * table,u32 table_length,u8 table_flags)155 acpi_tb_release_table(struct acpi_table_header *table,
156 u32 table_length, u8 table_flags)
157 {
158
159 switch (table_flags & ACPI_TABLE_ORIGIN_MASK) {
160 case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
161
162 acpi_os_unmap_memory(table, table_length);
163 break;
164
165 case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
166 case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
167 default:
168
169 break;
170 }
171 }
172
173 /*******************************************************************************
174 *
175 * FUNCTION: acpi_tb_acquire_temp_table
176 *
177 * PARAMETERS: table_desc - Table descriptor to be acquired
178 * address - Address of the table
179 * flags - Allocation flags of the table
180 *
181 * RETURN: Status
182 *
183 * DESCRIPTION: This function validates the table header to obtain the length
184 * of a table and fills the table descriptor to make its state as
185 * "INSTALLED". Such a table descriptor is only used for verified
186 * installation.
187 *
188 ******************************************************************************/
189
190 acpi_status
acpi_tb_acquire_temp_table(struct acpi_table_desc * table_desc,acpi_physical_address address,u8 flags)191 acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc,
192 acpi_physical_address address, u8 flags)
193 {
194 struct acpi_table_header *table_header;
195
196 switch (flags & ACPI_TABLE_ORIGIN_MASK) {
197 case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
198
199 /* Get the length of the full table from the header */
200
201 table_header =
202 acpi_os_map_memory(address,
203 sizeof(struct acpi_table_header));
204 if (!table_header) {
205 return (AE_NO_MEMORY);
206 }
207
208 acpi_tb_init_table_descriptor(table_desc, address, flags,
209 table_header);
210 acpi_os_unmap_memory(table_header,
211 sizeof(struct acpi_table_header));
212 return (AE_OK);
213
214 case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
215 case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
216
217 table_header = ACPI_CAST_PTR(struct acpi_table_header,
218 ACPI_PHYSADDR_TO_PTR(address));
219 if (!table_header) {
220 return (AE_NO_MEMORY);
221 }
222
223 acpi_tb_init_table_descriptor(table_desc, address, flags,
224 table_header);
225 return (AE_OK);
226
227 default:
228
229 break;
230 }
231
232 /* Table is not valid yet */
233
234 return (AE_NO_MEMORY);
235 }
236
237 /*******************************************************************************
238 *
239 * FUNCTION: acpi_tb_release_temp_table
240 *
241 * PARAMETERS: table_desc - Table descriptor to be released
242 *
243 * RETURN: Status
244 *
245 * DESCRIPTION: The inverse of acpi_tb_acquire_temp_table().
246 *
247 *****************************************************************************/
248
acpi_tb_release_temp_table(struct acpi_table_desc * table_desc)249 void acpi_tb_release_temp_table(struct acpi_table_desc *table_desc)
250 {
251
252 /*
253 * Note that the .Address is maintained by the callers of
254 * acpi_tb_acquire_temp_table(), thus do not invoke acpi_tb_uninstall_table()
255 * where .Address will be freed.
256 */
257 acpi_tb_invalidate_table(table_desc);
258 }
259
260 /******************************************************************************
261 *
262 * FUNCTION: acpi_tb_validate_table
263 *
264 * PARAMETERS: table_desc - Table descriptor
265 *
266 * RETURN: Status
267 *
268 * DESCRIPTION: This function is called to validate the table, the returned
269 * table descriptor is in "VALIDATED" state.
270 *
271 *****************************************************************************/
272
acpi_tb_validate_table(struct acpi_table_desc * table_desc)273 acpi_status acpi_tb_validate_table(struct acpi_table_desc *table_desc)
274 {
275 acpi_status status = AE_OK;
276
277 ACPI_FUNCTION_TRACE(tb_validate_table);
278
279 /* Validate the table if necessary */
280
281 if (!table_desc->pointer) {
282 status = acpi_tb_acquire_table(table_desc, &table_desc->pointer,
283 &table_desc->length,
284 &table_desc->flags);
285 if (!table_desc->pointer) {
286 status = AE_NO_MEMORY;
287 }
288 }
289
290 return_ACPI_STATUS(status);
291 }
292
293 /*******************************************************************************
294 *
295 * FUNCTION: acpi_tb_invalidate_table
296 *
297 * PARAMETERS: table_desc - Table descriptor
298 *
299 * RETURN: None
300 *
301 * DESCRIPTION: Invalidate one internal ACPI table, this is the inverse of
302 * acpi_tb_validate_table().
303 *
304 ******************************************************************************/
305
acpi_tb_invalidate_table(struct acpi_table_desc * table_desc)306 void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc)
307 {
308
309 ACPI_FUNCTION_TRACE(tb_invalidate_table);
310
311 /* Table must be validated */
312
313 if (!table_desc->pointer) {
314 return_VOID;
315 }
316
317 acpi_tb_release_table(table_desc->pointer, table_desc->length,
318 table_desc->flags);
319 table_desc->pointer = NULL;
320
321 return_VOID;
322 }
323
324 /******************************************************************************
325 *
326 * FUNCTION: acpi_tb_validate_temp_table
327 *
328 * PARAMETERS: table_desc - Table descriptor
329 *
330 * RETURN: Status
331 *
332 * DESCRIPTION: This function is called to validate the table, the returned
333 * table descriptor is in "VALIDATED" state.
334 *
335 *****************************************************************************/
336
acpi_tb_validate_temp_table(struct acpi_table_desc * table_desc)337 acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc)
338 {
339
340 if (!table_desc->pointer && !acpi_gbl_verify_table_checksum) {
341 /*
342 * Only validates the header of the table.
343 * Note that Length contains the size of the mapping after invoking
344 * this work around, this value is required by
345 * acpi_tb_release_temp_table().
346 * We can do this because in acpi_init_table_descriptor(), the Length
347 * field of the installed descriptor is filled with the actual
348 * table length obtaining from the table header.
349 */
350 table_desc->length = sizeof(struct acpi_table_header);
351 }
352
353 return (acpi_tb_validate_table(table_desc));
354 }
355
356 /******************************************************************************
357 *
358 * FUNCTION: acpi_tb_verify_temp_table
359 *
360 * PARAMETERS: table_desc - Table descriptor
361 * signature - Table signature to verify
362 *
363 * RETURN: Status
364 *
365 * DESCRIPTION: This function is called to validate and verify the table, the
366 * returned table descriptor is in "VALIDATED" state.
367 *
368 *****************************************************************************/
369
370 acpi_status
acpi_tb_verify_temp_table(struct acpi_table_desc * table_desc,char * signature)371 acpi_tb_verify_temp_table(struct acpi_table_desc * table_desc, char *signature)
372 {
373 acpi_status status = AE_OK;
374
375 ACPI_FUNCTION_TRACE(tb_verify_temp_table);
376
377 /* Validate the table */
378
379 status = acpi_tb_validate_temp_table(table_desc);
380 if (ACPI_FAILURE(status)) {
381 return_ACPI_STATUS(AE_NO_MEMORY);
382 }
383
384 /* If a particular signature is expected (DSDT/FACS), it must match */
385
386 if (signature && !ACPI_COMPARE_NAME(&table_desc->signature, signature)) {
387 ACPI_BIOS_ERROR((AE_INFO,
388 "Invalid signature 0x%X for ACPI table, expected [%s]",
389 table_desc->signature.integer, signature));
390 status = AE_BAD_SIGNATURE;
391 goto invalidate_and_exit;
392 }
393
394 /* Verify the checksum */
395
396 if (acpi_gbl_verify_table_checksum) {
397 status =
398 acpi_tb_verify_checksum(table_desc->pointer,
399 table_desc->length);
400 if (ACPI_FAILURE(status)) {
401 ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
402 "%4.4s 0x%8.8X%8.8X"
403 " Attempted table install failed",
404 acpi_ut_valid_acpi_name(table_desc->
405 signature.
406 ascii) ?
407 table_desc->signature.ascii : "????",
408 ACPI_FORMAT_UINT64(table_desc->
409 address)));
410 goto invalidate_and_exit;
411 }
412 }
413
414 return_ACPI_STATUS(AE_OK);
415
416 invalidate_and_exit:
417 acpi_tb_invalidate_table(table_desc);
418 return_ACPI_STATUS(status);
419 }
420
421 /*******************************************************************************
422 *
423 * FUNCTION: acpi_tb_resize_root_table_list
424 *
425 * PARAMETERS: None
426 *
427 * RETURN: Status
428 *
429 * DESCRIPTION: Expand the size of global table array
430 *
431 ******************************************************************************/
432
acpi_tb_resize_root_table_list(void)433 acpi_status acpi_tb_resize_root_table_list(void)
434 {
435 struct acpi_table_desc *tables;
436 u32 table_count;
437
438 ACPI_FUNCTION_TRACE(tb_resize_root_table_list);
439
440 /* allow_resize flag is a parameter to acpi_initialize_tables */
441
442 if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) {
443 ACPI_ERROR((AE_INFO,
444 "Resize of Root Table Array is not allowed"));
445 return_ACPI_STATUS(AE_SUPPORT);
446 }
447
448 /* Increase the Table Array size */
449
450 if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
451 table_count = acpi_gbl_root_table_list.max_table_count;
452 } else {
453 table_count = acpi_gbl_root_table_list.current_table_count;
454 }
455
456 tables = ACPI_ALLOCATE_ZEROED(((acpi_size) table_count +
457 ACPI_ROOT_TABLE_SIZE_INCREMENT) *
458 sizeof(struct acpi_table_desc));
459 if (!tables) {
460 ACPI_ERROR((AE_INFO,
461 "Could not allocate new root table array"));
462 return_ACPI_STATUS(AE_NO_MEMORY);
463 }
464
465 /* Copy and free the previous table array */
466
467 if (acpi_gbl_root_table_list.tables) {
468 memcpy(tables, acpi_gbl_root_table_list.tables,
469 (acpi_size) table_count *
470 sizeof(struct acpi_table_desc));
471
472 if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
473 ACPI_FREE(acpi_gbl_root_table_list.tables);
474 }
475 }
476
477 acpi_gbl_root_table_list.tables = tables;
478 acpi_gbl_root_table_list.max_table_count =
479 table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT;
480 acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED;
481
482 return_ACPI_STATUS(AE_OK);
483 }
484
485 /*******************************************************************************
486 *
487 * FUNCTION: acpi_tb_get_next_table_descriptor
488 *
489 * PARAMETERS: table_index - Where table index is returned
490 * table_desc - Where table descriptor is returned
491 *
492 * RETURN: Status and table index/descriptor.
493 *
494 * DESCRIPTION: Allocate a new ACPI table entry to the global table list
495 *
496 ******************************************************************************/
497
498 acpi_status
acpi_tb_get_next_table_descriptor(u32 * table_index,struct acpi_table_desc ** table_desc)499 acpi_tb_get_next_table_descriptor(u32 *table_index,
500 struct acpi_table_desc **table_desc)
501 {
502 acpi_status status;
503 u32 i;
504
505 /* Ensure that there is room for the table in the Root Table List */
506
507 if (acpi_gbl_root_table_list.current_table_count >=
508 acpi_gbl_root_table_list.max_table_count) {
509 status = acpi_tb_resize_root_table_list();
510 if (ACPI_FAILURE(status)) {
511 return (status);
512 }
513 }
514
515 i = acpi_gbl_root_table_list.current_table_count;
516 acpi_gbl_root_table_list.current_table_count++;
517
518 if (table_index) {
519 *table_index = i;
520 }
521 if (table_desc) {
522 *table_desc = &acpi_gbl_root_table_list.tables[i];
523 }
524
525 return (AE_OK);
526 }
527
528 /*******************************************************************************
529 *
530 * FUNCTION: acpi_tb_terminate
531 *
532 * PARAMETERS: None
533 *
534 * RETURN: None
535 *
536 * DESCRIPTION: Delete all internal ACPI tables
537 *
538 ******************************************************************************/
539
acpi_tb_terminate(void)540 void acpi_tb_terminate(void)
541 {
542 u32 i;
543
544 ACPI_FUNCTION_TRACE(tb_terminate);
545
546 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
547
548 /* Delete the individual tables */
549
550 for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
551 acpi_tb_uninstall_table(&acpi_gbl_root_table_list.tables[i]);
552 }
553
554 /*
555 * Delete the root table array if allocated locally. Array cannot be
556 * mapped, so we don't need to check for that flag.
557 */
558 if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
559 ACPI_FREE(acpi_gbl_root_table_list.tables);
560 }
561
562 acpi_gbl_root_table_list.tables = NULL;
563 acpi_gbl_root_table_list.flags = 0;
564 acpi_gbl_root_table_list.current_table_count = 0;
565
566 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n"));
567
568 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
569 return_VOID;
570 }
571
572 /*******************************************************************************
573 *
574 * FUNCTION: acpi_tb_delete_namespace_by_owner
575 *
576 * PARAMETERS: table_index - Table index
577 *
578 * RETURN: Status
579 *
580 * DESCRIPTION: Delete all namespace objects created when this table was loaded.
581 *
582 ******************************************************************************/
583
acpi_tb_delete_namespace_by_owner(u32 table_index)584 acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index)
585 {
586 acpi_owner_id owner_id;
587 acpi_status status;
588
589 ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner);
590
591 status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
592 if (ACPI_FAILURE(status)) {
593 return_ACPI_STATUS(status);
594 }
595
596 if (table_index >= acpi_gbl_root_table_list.current_table_count) {
597
598 /* The table index does not exist */
599
600 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
601 return_ACPI_STATUS(AE_NOT_EXIST);
602 }
603
604 /* Get the owner ID for this table, used to delete namespace nodes */
605
606 owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id;
607 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
608
609 /*
610 * Need to acquire the namespace writer lock to prevent interference
611 * with any concurrent namespace walks. The interpreter must be
612 * released during the deletion since the acquisition of the deletion
613 * lock may block, and also since the execution of a namespace walk
614 * must be allowed to use the interpreter.
615 */
616 (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
617 status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock);
618
619 acpi_ns_delete_namespace_by_owner(owner_id);
620 if (ACPI_FAILURE(status)) {
621 return_ACPI_STATUS(status);
622 }
623
624 acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock);
625
626 status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
627 return_ACPI_STATUS(status);
628 }
629
630 /*******************************************************************************
631 *
632 * FUNCTION: acpi_tb_allocate_owner_id
633 *
634 * PARAMETERS: table_index - Table index
635 *
636 * RETURN: Status
637 *
638 * DESCRIPTION: Allocates owner_id in table_desc
639 *
640 ******************************************************************************/
641
acpi_tb_allocate_owner_id(u32 table_index)642 acpi_status acpi_tb_allocate_owner_id(u32 table_index)
643 {
644 acpi_status status = AE_BAD_PARAMETER;
645
646 ACPI_FUNCTION_TRACE(tb_allocate_owner_id);
647
648 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
649 if (table_index < acpi_gbl_root_table_list.current_table_count) {
650 status =
651 acpi_ut_allocate_owner_id(&
652 (acpi_gbl_root_table_list.
653 tables[table_index].owner_id));
654 }
655
656 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
657 return_ACPI_STATUS(status);
658 }
659
660 /*******************************************************************************
661 *
662 * FUNCTION: acpi_tb_release_owner_id
663 *
664 * PARAMETERS: table_index - Table index
665 *
666 * RETURN: Status
667 *
668 * DESCRIPTION: Releases owner_id in table_desc
669 *
670 ******************************************************************************/
671
acpi_tb_release_owner_id(u32 table_index)672 acpi_status acpi_tb_release_owner_id(u32 table_index)
673 {
674 acpi_status status = AE_BAD_PARAMETER;
675
676 ACPI_FUNCTION_TRACE(tb_release_owner_id);
677
678 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
679 if (table_index < acpi_gbl_root_table_list.current_table_count) {
680 acpi_ut_release_owner_id(&
681 (acpi_gbl_root_table_list.
682 tables[table_index].owner_id));
683 status = AE_OK;
684 }
685
686 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
687 return_ACPI_STATUS(status);
688 }
689
690 /*******************************************************************************
691 *
692 * FUNCTION: acpi_tb_get_owner_id
693 *
694 * PARAMETERS: table_index - Table index
695 * owner_id - Where the table owner_id is returned
696 *
697 * RETURN: Status
698 *
699 * DESCRIPTION: returns owner_id for the ACPI table
700 *
701 ******************************************************************************/
702
acpi_tb_get_owner_id(u32 table_index,acpi_owner_id * owner_id)703 acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id * owner_id)
704 {
705 acpi_status status = AE_BAD_PARAMETER;
706
707 ACPI_FUNCTION_TRACE(tb_get_owner_id);
708
709 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
710 if (table_index < acpi_gbl_root_table_list.current_table_count) {
711 *owner_id =
712 acpi_gbl_root_table_list.tables[table_index].owner_id;
713 status = AE_OK;
714 }
715
716 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
717 return_ACPI_STATUS(status);
718 }
719
720 /*******************************************************************************
721 *
722 * FUNCTION: acpi_tb_is_table_loaded
723 *
724 * PARAMETERS: table_index - Index into the root table
725 *
726 * RETURN: Table Loaded Flag
727 *
728 ******************************************************************************/
729
acpi_tb_is_table_loaded(u32 table_index)730 u8 acpi_tb_is_table_loaded(u32 table_index)
731 {
732 u8 is_loaded = FALSE;
733
734 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
735 if (table_index < acpi_gbl_root_table_list.current_table_count) {
736 is_loaded = (u8)
737 (acpi_gbl_root_table_list.tables[table_index].flags &
738 ACPI_TABLE_IS_LOADED);
739 }
740
741 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
742 return (is_loaded);
743 }
744
745 /*******************************************************************************
746 *
747 * FUNCTION: acpi_tb_set_table_loaded_flag
748 *
749 * PARAMETERS: table_index - Table index
750 * is_loaded - TRUE if table is loaded, FALSE otherwise
751 *
752 * RETURN: None
753 *
754 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
755 *
756 ******************************************************************************/
757
acpi_tb_set_table_loaded_flag(u32 table_index,u8 is_loaded)758 void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded)
759 {
760
761 (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
762 if (table_index < acpi_gbl_root_table_list.current_table_count) {
763 if (is_loaded) {
764 acpi_gbl_root_table_list.tables[table_index].flags |=
765 ACPI_TABLE_IS_LOADED;
766 } else {
767 acpi_gbl_root_table_list.tables[table_index].flags &=
768 ~ACPI_TABLE_IS_LOADED;
769 }
770 }
771
772 (void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
773 }
774