1 /******************************************************************************
2 *
3 * Module Name: tbinstal - ACPI table installation and removal
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
45 #define __TBINSTAL_C__
46
47 #include "acpi.h"
48 #include "accommon.h"
49 #include "acnamesp.h"
50 #include "actables.h"
51
52
53 #define _COMPONENT ACPI_TABLES
54 ACPI_MODULE_NAME ("tbinstal")
55
56
57 /******************************************************************************
58 *
59 * FUNCTION: AcpiTbVerifyTable
60 *
61 * PARAMETERS: TableDesc - table
62 *
63 * RETURN: Status
64 *
65 * DESCRIPTION: this function is called to verify and map table
66 *
67 *****************************************************************************/
68
69 ACPI_STATUS
70 AcpiTbVerifyTable (
71 ACPI_TABLE_DESC *TableDesc)
72 {
73 ACPI_STATUS Status = AE_OK;
74
75
76 ACPI_FUNCTION_TRACE (TbVerifyTable);
77
78
79 /* Map the table if necessary */
80
81 if (!TableDesc->Pointer)
82 {
83 if ((TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) ==
84 ACPI_TABLE_ORIGIN_MAPPED)
85 {
86 TableDesc->Pointer = AcpiOsMapMemory (
87 TableDesc->Address, TableDesc->Length);
88 }
89
90 if (!TableDesc->Pointer)
91 {
92 return_ACPI_STATUS (AE_NO_MEMORY);
93 }
94 }
95
96 /* Always calculate checksum, ignore bad checksum if requested */
97
98 Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
99
100 return_ACPI_STATUS (Status);
101 }
102
103
104 /*******************************************************************************
105 *
106 * FUNCTION: AcpiTbAddTable
107 *
108 * PARAMETERS: TableDesc - Table descriptor
109 * TableIndex - Where the table index is returned
110 *
111 * RETURN: Status
112 *
113 * DESCRIPTION: This function is called to add an ACPI table. It is used to
114 * dynamically load tables via the Load and LoadTable AML
115 * operators.
116 *
117 ******************************************************************************/
118
119 ACPI_STATUS
120 AcpiTbAddTable (
121 ACPI_TABLE_DESC *TableDesc,
122 UINT32 *TableIndex)
123 {
124 UINT32 i;
125 ACPI_STATUS Status = AE_OK;
126
127
128 ACPI_FUNCTION_TRACE (TbAddTable);
129
130
131 if (!TableDesc->Pointer)
132 {
133 Status = AcpiTbVerifyTable (TableDesc);
134 if (ACPI_FAILURE (Status) || !TableDesc->Pointer)
135 {
136 return_ACPI_STATUS (Status);
137 }
138 }
139
140 /*
141 * Validate the incoming table signature.
142 *
143 * 1) Originally, we checked the table signature for "SSDT" or "PSDT".
144 * 2) We added support for OEMx tables, signature "OEM".
145 * 3) Valid tables were encountered with a null signature, so we just
146 * gave up on validating the signature, (05/2008).
147 * 4) We encountered non-AML tables such as the MADT, which caused
148 * interpreter errors and kernel faults. So now, we once again allow
149 * only "SSDT", "OEMx", and now, also a null signature. (05/2011).
150 */
151 if ((TableDesc->Pointer->Signature[0] != 0x00) &&
152 (!ACPI_COMPARE_NAME (TableDesc->Pointer->Signature, ACPI_SIG_SSDT)) &&
153 (ACPI_STRNCMP (TableDesc->Pointer->Signature, "OEM", 3)))
154 {
155 ACPI_BIOS_ERROR ((AE_INFO,
156 "Table has invalid signature [%4.4s] (0x%8.8X), "
157 "must be SSDT or OEMx",
158 AcpiUtValidAcpiName (TableDesc->Pointer->Signature) ?
159 TableDesc->Pointer->Signature : "????",
160 *(UINT32 *) TableDesc->Pointer->Signature));
161
162 return_ACPI_STATUS (AE_BAD_SIGNATURE);
163 }
164
165 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
166
167 /* Check if table is already registered */
168
169 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
170 {
171 if (!AcpiGbl_RootTableList.Tables[i].Pointer)
172 {
173 Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
174 if (ACPI_FAILURE (Status) ||
175 !AcpiGbl_RootTableList.Tables[i].Pointer)
176 {
177 continue;
178 }
179 }
180
181 /*
182 * Check for a table match on the entire table length,
183 * not just the header.
184 */
185 if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length)
186 {
187 continue;
188 }
189
190 if (ACPI_MEMCMP (TableDesc->Pointer,
191 AcpiGbl_RootTableList.Tables[i].Pointer,
192 AcpiGbl_RootTableList.Tables[i].Length))
193 {
194 continue;
195 }
196
197 /*
198 * Note: the current mechanism does not unregister a table if it is
199 * dynamically unloaded. The related namespace entries are deleted,
200 * but the table remains in the root table list.
201 *
202 * The assumption here is that the number of different tables that
203 * will be loaded is actually small, and there is minimal overhead
204 * in just keeping the table in case it is needed again.
205 *
206 * If this assumption changes in the future (perhaps on large
207 * machines with many table load/unload operations), tables will
208 * need to be unregistered when they are unloaded, and slots in the
209 * root table list should be reused when empty.
210 */
211
212 /*
213 * Table is already registered.
214 * We can delete the table that was passed as a parameter.
215 */
216 AcpiTbDeleteTable (TableDesc);
217 *TableIndex = i;
218
219 if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED)
220 {
221 /* Table is still loaded, this is an error */
222
223 Status = AE_ALREADY_EXISTS;
224 goto Release;
225 }
226 else
227 {
228 /* Table was unloaded, allow it to be reloaded */
229
230 TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer;
231 TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address;
232 Status = AE_OK;
233 goto PrintHeader;
234 }
235 }
236
237 /*
238 * ACPI Table Override:
239 * Allow the host to override dynamically loaded tables.
240 * NOTE: the table is fully mapped at this point, and the mapping will
241 * be deleted by TbTableOverride if the table is actually overridden.
242 */
243 (void) AcpiTbTableOverride (TableDesc->Pointer, TableDesc);
244
245 /* Add the table to the global root table list */
246
247 Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer,
248 TableDesc->Length, TableDesc->Flags, TableIndex);
249 if (ACPI_FAILURE (Status))
250 {
251 goto Release;
252 }
253
254 PrintHeader:
255 AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer);
256
257 Release:
258 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
259 return_ACPI_STATUS (Status);
260 }
261
262
263 /*******************************************************************************
264 *
265 * FUNCTION: AcpiTbTableOverride
266 *
267 * PARAMETERS: TableHeader - Header for the original table
268 * TableDesc - Table descriptor initialized for the
269 * original table. May or may not be mapped.
270 *
271 * RETURN: Pointer to the entire new table. NULL if table not overridden.
272 * If overridden, installs the new table within the input table
273 * descriptor.
274 *
275 * DESCRIPTION: Attempt table override by calling the OSL override functions.
276 * Note: If the table is overridden, then the entire new table
277 * is mapped and returned by this function.
278 *
279 ******************************************************************************/
280
281 ACPI_TABLE_HEADER *
282 AcpiTbTableOverride (
283 ACPI_TABLE_HEADER *TableHeader,
284 ACPI_TABLE_DESC *TableDesc)
285 {
286 ACPI_STATUS Status;
287 ACPI_TABLE_HEADER *NewTable = NULL;
288 ACPI_PHYSICAL_ADDRESS NewAddress = 0;
289 UINT32 NewTableLength = 0;
290 UINT8 NewFlags;
291 char *OverrideType;
292
293
294 /* (1) Attempt logical override (returns a logical address) */
295
296 Status = AcpiOsTableOverride (TableHeader, &NewTable);
297 if (ACPI_SUCCESS (Status) && NewTable)
298 {
299 NewAddress = ACPI_PTR_TO_PHYSADDR (NewTable);
300 NewTableLength = NewTable->Length;
301 NewFlags = ACPI_TABLE_ORIGIN_OVERRIDE;
302 OverrideType = "Logical";
303 goto FinishOverride;
304 }
305
306 /* (2) Attempt physical override (returns a physical address) */
307
308 Status = AcpiOsPhysicalTableOverride (TableHeader,
309 &NewAddress, &NewTableLength);
310 if (ACPI_SUCCESS (Status) && NewAddress && NewTableLength)
311 {
312 /* Map the entire new table */
313
314 NewTable = AcpiOsMapMemory (NewAddress, NewTableLength);
315 if (!NewTable)
316 {
317 ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY,
318 "%4.4s " ACPI_PRINTF_UINT
319 " Attempted physical table override failed",
320 TableHeader->Signature,
321 ACPI_FORMAT_TO_UINT (TableDesc->Address)));
322 return (NULL);
323 }
324
325 OverrideType = "Physical";
326 NewFlags = ACPI_TABLE_ORIGIN_MAPPED;
327 goto FinishOverride;
328 }
329
330 return (NULL); /* There was no override */
331
332
333 FinishOverride:
334
335 ACPI_INFO ((AE_INFO, "%4.4s " ACPI_PRINTF_UINT
336 " %s table override, new table: " ACPI_PRINTF_UINT,
337 TableHeader->Signature,
338 ACPI_FORMAT_TO_UINT (TableDesc->Address),
339 OverrideType, ACPI_FORMAT_TO_UINT (NewTable)));
340
341 /* We can now unmap/delete the original table (if fully mapped) */
342
343 AcpiTbDeleteTable (TableDesc);
344
345 /* Setup descriptor for the new table */
346
347 TableDesc->Address = NewAddress;
348 TableDesc->Pointer = NewTable;
349 TableDesc->Length = NewTableLength;
350 TableDesc->Flags = NewFlags;
351
352 return (NewTable);
353 }
354
355
356 /*******************************************************************************
357 *
358 * FUNCTION: AcpiTbResizeRootTableList
359 *
360 * PARAMETERS: None
361 *
362 * RETURN: Status
363 *
364 * DESCRIPTION: Expand the size of global table array
365 *
366 ******************************************************************************/
367
368 ACPI_STATUS
369 AcpiTbResizeRootTableList (
370 void)
371 {
372 ACPI_TABLE_DESC *Tables;
373 UINT32 TableCount;
374
375
376 ACPI_FUNCTION_TRACE (TbResizeRootTableList);
377
378
379 /* AllowResize flag is a parameter to AcpiInitializeTables */
380
381 if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE))
382 {
383 ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed"));
384 return_ACPI_STATUS (AE_SUPPORT);
385 }
386
387 /* Increase the Table Array size */
388
389 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
390 {
391 TableCount = AcpiGbl_RootTableList.MaxTableCount;
392 }
393 else
394 {
395 TableCount = AcpiGbl_RootTableList.CurrentTableCount;
396 }
397
398 Tables = ACPI_ALLOCATE_ZEROED (
399 ((ACPI_SIZE) TableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT) *
400 sizeof (ACPI_TABLE_DESC));
401 if (!Tables)
402 {
403 ACPI_ERROR ((AE_INFO, "Could not allocate new root table array"));
404 return_ACPI_STATUS (AE_NO_MEMORY);
405 }
406
407 /* Copy and free the previous table array */
408
409 if (AcpiGbl_RootTableList.Tables)
410 {
411 ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables,
412 (ACPI_SIZE) TableCount * sizeof (ACPI_TABLE_DESC));
413
414 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
415 {
416 ACPI_FREE (AcpiGbl_RootTableList.Tables);
417 }
418 }
419
420 AcpiGbl_RootTableList.Tables = Tables;
421 AcpiGbl_RootTableList.MaxTableCount =
422 TableCount + ACPI_ROOT_TABLE_SIZE_INCREMENT;
423 AcpiGbl_RootTableList.Flags |= ACPI_ROOT_ORIGIN_ALLOCATED;
424
425 return_ACPI_STATUS (AE_OK);
426 }
427
428
429 /*******************************************************************************
430 *
431 * FUNCTION: AcpiTbStoreTable
432 *
433 * PARAMETERS: Address - Table address
434 * Table - Table header
435 * Length - Table length
436 * Flags - flags
437 *
438 * RETURN: Status and table index.
439 *
440 * DESCRIPTION: Add an ACPI table to the global table list
441 *
442 ******************************************************************************/
443
444 ACPI_STATUS
445 AcpiTbStoreTable (
446 ACPI_PHYSICAL_ADDRESS Address,
447 ACPI_TABLE_HEADER *Table,
448 UINT32 Length,
449 UINT8 Flags,
450 UINT32 *TableIndex)
451 {
452 ACPI_STATUS Status;
453 ACPI_TABLE_DESC *NewTable;
454
455
456 /* Ensure that there is room for the table in the Root Table List */
457
458 if (AcpiGbl_RootTableList.CurrentTableCount >=
459 AcpiGbl_RootTableList.MaxTableCount)
460 {
461 Status = AcpiTbResizeRootTableList();
462 if (ACPI_FAILURE (Status))
463 {
464 return (Status);
465 }
466 }
467
468 NewTable = &AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.CurrentTableCount];
469
470 /* Initialize added table */
471
472 NewTable->Address = Address;
473 NewTable->Pointer = Table;
474 NewTable->Length = Length;
475 NewTable->OwnerId = 0;
476 NewTable->Flags = Flags;
477
478 ACPI_MOVE_32_TO_32 (&NewTable->Signature, Table->Signature);
479
480 *TableIndex = AcpiGbl_RootTableList.CurrentTableCount;
481 AcpiGbl_RootTableList.CurrentTableCount++;
482 return (AE_OK);
483 }
484
485
486 /*******************************************************************************
487 *
488 * FUNCTION: AcpiTbDeleteTable
489 *
490 * PARAMETERS: TableIndex - Table index
491 *
492 * RETURN: None
493 *
494 * DESCRIPTION: Delete one internal ACPI table
495 *
496 ******************************************************************************/
497
498 void
499 AcpiTbDeleteTable (
500 ACPI_TABLE_DESC *TableDesc)
501 {
502
503 /* Table must be mapped or allocated */
504
505 if (!TableDesc->Pointer)
506 {
507 return;
508 }
509
510 switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK)
511 {
512 case ACPI_TABLE_ORIGIN_MAPPED:
513
514 AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length);
515 break;
516
517 case ACPI_TABLE_ORIGIN_ALLOCATED:
518
519 ACPI_FREE (TableDesc->Pointer);
520 break;
521
522 /* Not mapped or allocated, there is nothing we can do */
523
524 default:
525
526 return;
527 }
528
529 TableDesc->Pointer = NULL;
530 }
531
532
533 /*******************************************************************************
534 *
535 * FUNCTION: AcpiTbTerminate
536 *
537 * PARAMETERS: None
538 *
539 * RETURN: None
540 *
541 * DESCRIPTION: Delete all internal ACPI tables
542 *
543 ******************************************************************************/
544
545 void
546 AcpiTbTerminate (
547 void)
548 {
549 UINT32 i;
550
551
552 ACPI_FUNCTION_TRACE (TbTerminate);
553
554
555 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
556
557 /* Delete the individual tables */
558
559 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++)
560 {
561 AcpiTbDeleteTable (&AcpiGbl_RootTableList.Tables[i]);
562 }
563
564 /*
565 * Delete the root table array if allocated locally. Array cannot be
566 * mapped, so we don't need to check for that flag.
567 */
568 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
569 {
570 ACPI_FREE (AcpiGbl_RootTableList.Tables);
571 }
572
573 AcpiGbl_RootTableList.Tables = NULL;
574 AcpiGbl_RootTableList.Flags = 0;
575 AcpiGbl_RootTableList.CurrentTableCount = 0;
576
577 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n"));
578 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
579
580 return_VOID;
581 }
582
583
584 /*******************************************************************************
585 *
586 * FUNCTION: AcpiTbDeleteNamespaceByOwner
587 *
588 * PARAMETERS: TableIndex - Table index
589 *
590 * RETURN: Status
591 *
592 * DESCRIPTION: Delete all namespace objects created when this table was loaded.
593 *
594 ******************************************************************************/
595
596 ACPI_STATUS
597 AcpiTbDeleteNamespaceByOwner (
598 UINT32 TableIndex)
599 {
600 ACPI_OWNER_ID OwnerId;
601 ACPI_STATUS Status;
602
603
604 ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner);
605
606
607 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
608 if (ACPI_FAILURE (Status))
609 {
610 return_ACPI_STATUS (Status);
611 }
612
613 if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount)
614 {
615 /* The table index does not exist */
616
617 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
618 return_ACPI_STATUS (AE_NOT_EXIST);
619 }
620
621 /* Get the owner ID for this table, used to delete namespace nodes */
622
623 OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
624 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
625
626 /*
627 * Need to acquire the namespace writer lock to prevent interference
628 * with any concurrent namespace walks. The interpreter must be
629 * released during the deletion since the acquisition of the deletion
630 * lock may block, and also since the execution of a namespace walk
631 * must be allowed to use the interpreter.
632 */
633 (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER);
634 Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock);
635
636 AcpiNsDeleteNamespaceByOwner (OwnerId);
637 if (ACPI_FAILURE (Status))
638 {
639 return_ACPI_STATUS (Status);
640 }
641
642 AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock);
643
644 Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER);
645 return_ACPI_STATUS (Status);
646 }
647
648
649 /*******************************************************************************
650 *
651 * FUNCTION: AcpiTbAllocateOwnerId
652 *
653 * PARAMETERS: TableIndex - Table index
654 *
655 * RETURN: Status
656 *
657 * DESCRIPTION: Allocates OwnerId in TableDesc
658 *
659 ******************************************************************************/
660
661 ACPI_STATUS
662 AcpiTbAllocateOwnerId (
663 UINT32 TableIndex)
664 {
665 ACPI_STATUS Status = AE_BAD_PARAMETER;
666
667
668 ACPI_FUNCTION_TRACE (TbAllocateOwnerId);
669
670
671 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
672 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
673 {
674 Status = AcpiUtAllocateOwnerId
675 (&(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
676 }
677
678 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
679 return_ACPI_STATUS (Status);
680 }
681
682
683 /*******************************************************************************
684 *
685 * FUNCTION: AcpiTbReleaseOwnerId
686 *
687 * PARAMETERS: TableIndex - Table index
688 *
689 * RETURN: Status
690 *
691 * DESCRIPTION: Releases OwnerId in TableDesc
692 *
693 ******************************************************************************/
694
695 ACPI_STATUS
696 AcpiTbReleaseOwnerId (
697 UINT32 TableIndex)
698 {
699 ACPI_STATUS Status = AE_BAD_PARAMETER;
700
701
702 ACPI_FUNCTION_TRACE (TbReleaseOwnerId);
703
704
705 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
706 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
707 {
708 AcpiUtReleaseOwnerId (
709 &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
710 Status = AE_OK;
711 }
712
713 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
714 return_ACPI_STATUS (Status);
715 }
716
717
718 /*******************************************************************************
719 *
720 * FUNCTION: AcpiTbGetOwnerId
721 *
722 * PARAMETERS: TableIndex - Table index
723 * OwnerId - Where the table OwnerId is returned
724 *
725 * RETURN: Status
726 *
727 * DESCRIPTION: returns OwnerId for the ACPI table
728 *
729 ******************************************************************************/
730
731 ACPI_STATUS
732 AcpiTbGetOwnerId (
733 UINT32 TableIndex,
734 ACPI_OWNER_ID *OwnerId)
735 {
736 ACPI_STATUS Status = AE_BAD_PARAMETER;
737
738
739 ACPI_FUNCTION_TRACE (TbGetOwnerId);
740
741
742 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
743 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
744 {
745 *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
746 Status = AE_OK;
747 }
748
749 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
750 return_ACPI_STATUS (Status);
751 }
752
753
754 /*******************************************************************************
755 *
756 * FUNCTION: AcpiTbIsTableLoaded
757 *
758 * PARAMETERS: TableIndex - Table index
759 *
760 * RETURN: Table Loaded Flag
761 *
762 ******************************************************************************/
763
764 BOOLEAN
765 AcpiTbIsTableLoaded (
766 UINT32 TableIndex)
767 {
768 BOOLEAN IsLoaded = FALSE;
769
770
771 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
772 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
773 {
774 IsLoaded = (BOOLEAN)
775 (AcpiGbl_RootTableList.Tables[TableIndex].Flags &
776 ACPI_TABLE_IS_LOADED);
777 }
778
779 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
780 return (IsLoaded);
781 }
782
783
784 /*******************************************************************************
785 *
786 * FUNCTION: AcpiTbSetTableLoadedFlag
787 *
788 * PARAMETERS: TableIndex - Table index
789 * IsLoaded - TRUE if table is loaded, FALSE otherwise
790 *
791 * RETURN: None
792 *
793 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
794 *
795 ******************************************************************************/
796
797 void
798 AcpiTbSetTableLoadedFlag (
799 UINT32 TableIndex,
800 BOOLEAN IsLoaded)
801 {
802
803 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
804 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
805 {
806 if (IsLoaded)
807 {
808 AcpiGbl_RootTableList.Tables[TableIndex].Flags |=
809 ACPI_TABLE_IS_LOADED;
810 }
811 else
812 {
813 AcpiGbl_RootTableList.Tables[TableIndex].Flags &=
814 ~ACPI_TABLE_IS_LOADED;
815 }
816 }
817
818 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
819 }