1/******************************************************************************
2 *
3 * Module Name: tbinstal - ACPI table installation and removal
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2011, 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 <contrib/dev/acpica/include/acpi.h>
48#include <contrib/dev/acpica/include/accommon.h>
49#include <contrib/dev/acpica/include/acnamesp.h>
50#include <contrib/dev/acpica/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
69ACPI_STATUS
70AcpiTbVerifyTable (
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 /* FACS is the odd table, has no standard ACPI header and no checksum */
97
98 if (!ACPI_COMPARE_NAME (&TableDesc->Signature, ACPI_SIG_FACS))
99 {
100 /* Always calculate checksum, ignore bad checksum if requested */
101
102 Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
103 }
104
105 return_ACPI_STATUS (Status);
106}
107
108
109/*******************************************************************************
110 *
111 * FUNCTION: AcpiTbAddTable
112 *
113 * PARAMETERS: TableDesc - Table descriptor
114 * TableIndex - Where the table index is returned
115 *
116 * RETURN: Status
117 *
118 * DESCRIPTION: This function is called to add an ACPI table. It is used to
119 * dynamically load tables via the Load and LoadTable AML
120 * operators.
121 *
122 ******************************************************************************/
123
124ACPI_STATUS
125AcpiTbAddTable (
126 ACPI_TABLE_DESC *TableDesc,
127 UINT32 *TableIndex)
128{
129 UINT32 i;
130 ACPI_STATUS Status = AE_OK;
131 ACPI_TABLE_HEADER *OverrideTable = NULL;
132
133
134 ACPI_FUNCTION_TRACE (TbAddTable);
135
136
137 if (!TableDesc->Pointer)
138 {
139 Status = AcpiTbVerifyTable (TableDesc);
140 if (ACPI_FAILURE (Status) || !TableDesc->Pointer)
141 {
142 return_ACPI_STATUS (Status);
143 }
144 }
145
146 /*
| 1/******************************************************************************
2 *
3 * Module Name: tbinstal - ACPI table installation and removal
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2011, 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 <contrib/dev/acpica/include/acpi.h>
48#include <contrib/dev/acpica/include/accommon.h>
49#include <contrib/dev/acpica/include/acnamesp.h>
50#include <contrib/dev/acpica/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
69ACPI_STATUS
70AcpiTbVerifyTable (
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 /* FACS is the odd table, has no standard ACPI header and no checksum */
97
98 if (!ACPI_COMPARE_NAME (&TableDesc->Signature, ACPI_SIG_FACS))
99 {
100 /* Always calculate checksum, ignore bad checksum if requested */
101
102 Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
103 }
104
105 return_ACPI_STATUS (Status);
106}
107
108
109/*******************************************************************************
110 *
111 * FUNCTION: AcpiTbAddTable
112 *
113 * PARAMETERS: TableDesc - Table descriptor
114 * TableIndex - Where the table index is returned
115 *
116 * RETURN: Status
117 *
118 * DESCRIPTION: This function is called to add an ACPI table. It is used to
119 * dynamically load tables via the Load and LoadTable AML
120 * operators.
121 *
122 ******************************************************************************/
123
124ACPI_STATUS
125AcpiTbAddTable (
126 ACPI_TABLE_DESC *TableDesc,
127 UINT32 *TableIndex)
128{
129 UINT32 i;
130 ACPI_STATUS Status = AE_OK;
131 ACPI_TABLE_HEADER *OverrideTable = NULL;
132
133
134 ACPI_FUNCTION_TRACE (TbAddTable);
135
136
137 if (!TableDesc->Pointer)
138 {
139 Status = AcpiTbVerifyTable (TableDesc);
140 if (ACPI_FAILURE (Status) || !TableDesc->Pointer)
141 {
142 return_ACPI_STATUS (Status);
143 }
144 }
145
146 /*
|
147 * Originally, we checked the table signature for "SSDT" or "PSDT" here.
148 * Next, we added support for OEMx tables, signature "OEM".
149 * Valid tables were encountered with a null signature, so we've just
150 * given up on validating the signature, since it seems to be a waste
151 * of code. The original code was removed (05/2008).
| 147 * Validate the incoming table signature.
148 *
149 * 1) Originally, we checked the table signature for "SSDT" or "PSDT".
150 * 2) We added support for OEMx tables, signature "OEM".
151 * 3) Valid tables were encountered with a null signature, so we just
152 * gave up on validating the signature, (05/2008).
153 * 4) We encountered non-AML tables such as the MADT, which caused
154 * interpreter errors and kernel faults. So now, we once again allow
155 * only "SSDT", "OEMx", and now, also a null signature. (05/2011).
|
152 */
| 156 */
|
| 157 if ((TableDesc->Pointer->Signature[0] != 0x00) &&
158 (!ACPI_COMPARE_NAME (TableDesc->Pointer->Signature, ACPI_SIG_SSDT)) &&
159 (ACPI_STRNCMP (TableDesc->Pointer->Signature, "OEM", 3)))
160 {
161 ACPI_ERROR ((AE_INFO,
162 "Table has invalid signature [%4.4s] (0x%8.8X), must be SSDT or OEMx",
163 AcpiUtValidAcpiName (*(UINT32 *) TableDesc->Pointer->Signature) ?
164 TableDesc->Pointer->Signature : "????",
165 *(UINT32 *) TableDesc->Pointer->Signature));
|
153
| 166
|
| 167 return_ACPI_STATUS (AE_BAD_SIGNATURE);
168 }
169
|
154 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
155
156 /* Check if table is already registered */
157
158 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
159 {
160 if (!AcpiGbl_RootTableList.Tables[i].Pointer)
161 {
162 Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
163 if (ACPI_FAILURE (Status) ||
164 !AcpiGbl_RootTableList.Tables[i].Pointer)
165 {
166 continue;
167 }
168 }
169
170 /*
171 * Check for a table match on the entire table length,
172 * not just the header.
173 */
174 if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length)
175 {
176 continue;
177 }
178
179 if (ACPI_MEMCMP (TableDesc->Pointer,
180 AcpiGbl_RootTableList.Tables[i].Pointer,
181 AcpiGbl_RootTableList.Tables[i].Length))
182 {
183 continue;
184 }
185
186 /*
187 * Note: the current mechanism does not unregister a table if it is
188 * dynamically unloaded. The related namespace entries are deleted,
189 * but the table remains in the root table list.
190 *
191 * The assumption here is that the number of different tables that
192 * will be loaded is actually small, and there is minimal overhead
193 * in just keeping the table in case it is needed again.
194 *
195 * If this assumption changes in the future (perhaps on large
196 * machines with many table load/unload operations), tables will
197 * need to be unregistered when they are unloaded, and slots in the
198 * root table list should be reused when empty.
199 */
200
201 /*
202 * Table is already registered.
203 * We can delete the table that was passed as a parameter.
204 */
205 AcpiTbDeleteTable (TableDesc);
206 *TableIndex = i;
207
208 if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED)
209 {
210 /* Table is still loaded, this is an error */
211
212 Status = AE_ALREADY_EXISTS;
213 goto Release;
214 }
215 else
216 {
217 /* Table was unloaded, allow it to be reloaded */
218
219 TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer;
220 TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address;
221 Status = AE_OK;
222 goto PrintHeader;
223 }
224 }
225
226 /*
227 * ACPI Table Override:
228 * Allow the host to override dynamically loaded tables.
229 */
230 Status = AcpiOsTableOverride (TableDesc->Pointer, &OverrideTable);
231 if (ACPI_SUCCESS (Status) && OverrideTable)
232 {
233 ACPI_INFO ((AE_INFO,
234 "%4.4s @ 0x%p Table override, replaced with:",
235 TableDesc->Pointer->Signature,
236 ACPI_CAST_PTR (void, TableDesc->Address)));
237
238 /* We can delete the table that was passed as a parameter */
239
240 AcpiTbDeleteTable (TableDesc);
241
242 /* Setup descriptor for the new table */
243
244 TableDesc->Address = ACPI_PTR_TO_PHYSADDR (OverrideTable);
245 TableDesc->Pointer = OverrideTable;
246 TableDesc->Length = OverrideTable->Length;
247 TableDesc->Flags = ACPI_TABLE_ORIGIN_OVERRIDE;
248 }
249
250 /* Add the table to the global root table list */
251
252 Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer,
253 TableDesc->Length, TableDesc->Flags, TableIndex);
254 if (ACPI_FAILURE (Status))
255 {
256 goto Release;
257 }
258
259PrintHeader:
260 AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer);
261
262Release:
263 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
264 return_ACPI_STATUS (Status);
265}
266
267
268/*******************************************************************************
269 *
270 * FUNCTION: AcpiTbResizeRootTableList
271 *
272 * PARAMETERS: None
273 *
274 * RETURN: Status
275 *
276 * DESCRIPTION: Expand the size of global table array
277 *
278 ******************************************************************************/
279
280ACPI_STATUS
281AcpiTbResizeRootTableList (
282 void)
283{
284 ACPI_TABLE_DESC *Tables;
285
286
287 ACPI_FUNCTION_TRACE (TbResizeRootTableList);
288
289
290 /* AllowResize flag is a parameter to AcpiInitializeTables */
291
292 if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE))
293 {
294 ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed"));
295 return_ACPI_STATUS (AE_SUPPORT);
296 }
297
298 /* Increase the Table Array size */
299
300 Tables = ACPI_ALLOCATE_ZEROED (
301 ((ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount +
302 ACPI_ROOT_TABLE_SIZE_INCREMENT) *
303 sizeof (ACPI_TABLE_DESC));
304 if (!Tables)
305 {
306 ACPI_ERROR ((AE_INFO, "Could not allocate new root table array"));
307 return_ACPI_STATUS (AE_NO_MEMORY);
308 }
309
310 /* Copy and free the previous table array */
311
312 if (AcpiGbl_RootTableList.Tables)
313 {
314 ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables,
315 (ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount * sizeof (ACPI_TABLE_DESC));
316
317 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
318 {
319 ACPI_FREE (AcpiGbl_RootTableList.Tables);
320 }
321 }
322
323 AcpiGbl_RootTableList.Tables = Tables;
324 AcpiGbl_RootTableList.MaxTableCount += ACPI_ROOT_TABLE_SIZE_INCREMENT;
325 AcpiGbl_RootTableList.Flags |= (UINT8) ACPI_ROOT_ORIGIN_ALLOCATED;
326
327 return_ACPI_STATUS (AE_OK);
328}
329
330
331/*******************************************************************************
332 *
333 * FUNCTION: AcpiTbStoreTable
334 *
335 * PARAMETERS: Address - Table address
336 * Table - Table header
337 * Length - Table length
338 * Flags - flags
339 *
340 * RETURN: Status and table index.
341 *
342 * DESCRIPTION: Add an ACPI table to the global table list
343 *
344 ******************************************************************************/
345
346ACPI_STATUS
347AcpiTbStoreTable (
348 ACPI_PHYSICAL_ADDRESS Address,
349 ACPI_TABLE_HEADER *Table,
350 UINT32 Length,
351 UINT8 Flags,
352 UINT32 *TableIndex)
353{
354 ACPI_STATUS Status;
355 ACPI_TABLE_DESC *NewTable;
356
357
358 /* Ensure that there is room for the table in the Root Table List */
359
360 if (AcpiGbl_RootTableList.CurrentTableCount >=
361 AcpiGbl_RootTableList.MaxTableCount)
362 {
363 Status = AcpiTbResizeRootTableList();
364 if (ACPI_FAILURE (Status))
365 {
366 return (Status);
367 }
368 }
369
370 NewTable = &AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.CurrentTableCount];
371
372 /* Initialize added table */
373
374 NewTable->Address = Address;
375 NewTable->Pointer = Table;
376 NewTable->Length = Length;
377 NewTable->OwnerId = 0;
378 NewTable->Flags = Flags;
379
380 ACPI_MOVE_32_TO_32 (&NewTable->Signature, Table->Signature);
381
382 *TableIndex = AcpiGbl_RootTableList.CurrentTableCount;
383 AcpiGbl_RootTableList.CurrentTableCount++;
384 return (AE_OK);
385}
386
387
388/*******************************************************************************
389 *
390 * FUNCTION: AcpiTbDeleteTable
391 *
392 * PARAMETERS: TableIndex - Table index
393 *
394 * RETURN: None
395 *
396 * DESCRIPTION: Delete one internal ACPI table
397 *
398 ******************************************************************************/
399
400void
401AcpiTbDeleteTable (
402 ACPI_TABLE_DESC *TableDesc)
403{
404
405 /* Table must be mapped or allocated */
406
407 if (!TableDesc->Pointer)
408 {
409 return;
410 }
411
412 switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK)
413 {
414 case ACPI_TABLE_ORIGIN_MAPPED:
415 AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length);
416 break;
417
418 case ACPI_TABLE_ORIGIN_ALLOCATED:
419 ACPI_FREE (TableDesc->Pointer);
420 break;
421
422 default:
423 break;
424 }
425
426 TableDesc->Pointer = NULL;
427}
428
429
430/*******************************************************************************
431 *
432 * FUNCTION: AcpiTbTerminate
433 *
434 * PARAMETERS: None
435 *
436 * RETURN: None
437 *
438 * DESCRIPTION: Delete all internal ACPI tables
439 *
440 ******************************************************************************/
441
442void
443AcpiTbTerminate (
444 void)
445{
446 UINT32 i;
447
448
449 ACPI_FUNCTION_TRACE (TbTerminate);
450
451
452 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
453
454 /* Delete the individual tables */
455
456 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++)
457 {
458 AcpiTbDeleteTable (&AcpiGbl_RootTableList.Tables[i]);
459 }
460
461 /*
462 * Delete the root table array if allocated locally. Array cannot be
463 * mapped, so we don't need to check for that flag.
464 */
465 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
466 {
467 ACPI_FREE (AcpiGbl_RootTableList.Tables);
468 }
469
470 AcpiGbl_RootTableList.Tables = NULL;
471 AcpiGbl_RootTableList.Flags = 0;
472 AcpiGbl_RootTableList.CurrentTableCount = 0;
473
474 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n"));
475 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
476}
477
478
479/*******************************************************************************
480 *
481 * FUNCTION: AcpiTbDeleteNamespaceByOwner
482 *
483 * PARAMETERS: TableIndex - Table index
484 *
485 * RETURN: Status
486 *
487 * DESCRIPTION: Delete all namespace objects created when this table was loaded.
488 *
489 ******************************************************************************/
490
491ACPI_STATUS
492AcpiTbDeleteNamespaceByOwner (
493 UINT32 TableIndex)
494{
495 ACPI_OWNER_ID OwnerId;
496 ACPI_STATUS Status;
497
498
499 ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner);
500
501
502 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
503 if (ACPI_FAILURE (Status))
504 {
505 return_ACPI_STATUS (Status);
506 }
507
508 if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount)
509 {
510 /* The table index does not exist */
511
512 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
513 return_ACPI_STATUS (AE_NOT_EXIST);
514 }
515
516 /* Get the owner ID for this table, used to delete namespace nodes */
517
518 OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
519 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
520
521 /*
522 * Need to acquire the namespace writer lock to prevent interference
523 * with any concurrent namespace walks. The interpreter must be
524 * released during the deletion since the acquisition of the deletion
525 * lock may block, and also since the execution of a namespace walk
526 * must be allowed to use the interpreter.
527 */
528 (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER);
529 Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock);
530
531 AcpiNsDeleteNamespaceByOwner (OwnerId);
532 if (ACPI_FAILURE (Status))
533 {
534 return_ACPI_STATUS (Status);
535 }
536
537 AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock);
538
539 Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER);
540 return_ACPI_STATUS (Status);
541}
542
543
544/*******************************************************************************
545 *
546 * FUNCTION: AcpiTbAllocateOwnerId
547 *
548 * PARAMETERS: TableIndex - Table index
549 *
550 * RETURN: Status
551 *
552 * DESCRIPTION: Allocates OwnerId in TableDesc
553 *
554 ******************************************************************************/
555
556ACPI_STATUS
557AcpiTbAllocateOwnerId (
558 UINT32 TableIndex)
559{
560 ACPI_STATUS Status = AE_BAD_PARAMETER;
561
562
563 ACPI_FUNCTION_TRACE (TbAllocateOwnerId);
564
565
566 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
567 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
568 {
569 Status = AcpiUtAllocateOwnerId
570 (&(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
571 }
572
573 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
574 return_ACPI_STATUS (Status);
575}
576
577
578/*******************************************************************************
579 *
580 * FUNCTION: AcpiTbReleaseOwnerId
581 *
582 * PARAMETERS: TableIndex - Table index
583 *
584 * RETURN: Status
585 *
586 * DESCRIPTION: Releases OwnerId in TableDesc
587 *
588 ******************************************************************************/
589
590ACPI_STATUS
591AcpiTbReleaseOwnerId (
592 UINT32 TableIndex)
593{
594 ACPI_STATUS Status = AE_BAD_PARAMETER;
595
596
597 ACPI_FUNCTION_TRACE (TbReleaseOwnerId);
598
599
600 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
601 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
602 {
603 AcpiUtReleaseOwnerId (
604 &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
605 Status = AE_OK;
606 }
607
608 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
609 return_ACPI_STATUS (Status);
610}
611
612
613/*******************************************************************************
614 *
615 * FUNCTION: AcpiTbGetOwnerId
616 *
617 * PARAMETERS: TableIndex - Table index
618 * OwnerId - Where the table OwnerId is returned
619 *
620 * RETURN: Status
621 *
622 * DESCRIPTION: returns OwnerId for the ACPI table
623 *
624 ******************************************************************************/
625
626ACPI_STATUS
627AcpiTbGetOwnerId (
628 UINT32 TableIndex,
629 ACPI_OWNER_ID *OwnerId)
630{
631 ACPI_STATUS Status = AE_BAD_PARAMETER;
632
633
634 ACPI_FUNCTION_TRACE (TbGetOwnerId);
635
636
637 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
638 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
639 {
640 *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
641 Status = AE_OK;
642 }
643
644 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
645 return_ACPI_STATUS (Status);
646}
647
648
649/*******************************************************************************
650 *
651 * FUNCTION: AcpiTbIsTableLoaded
652 *
653 * PARAMETERS: TableIndex - Table index
654 *
655 * RETURN: Table Loaded Flag
656 *
657 ******************************************************************************/
658
659BOOLEAN
660AcpiTbIsTableLoaded (
661 UINT32 TableIndex)
662{
663 BOOLEAN IsLoaded = FALSE;
664
665
666 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
667 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
668 {
669 IsLoaded = (BOOLEAN)
670 (AcpiGbl_RootTableList.Tables[TableIndex].Flags &
671 ACPI_TABLE_IS_LOADED);
672 }
673
674 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
675 return (IsLoaded);
676}
677
678
679/*******************************************************************************
680 *
681 * FUNCTION: AcpiTbSetTableLoadedFlag
682 *
683 * PARAMETERS: TableIndex - Table index
684 * IsLoaded - TRUE if table is loaded, FALSE otherwise
685 *
686 * RETURN: None
687 *
688 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
689 *
690 ******************************************************************************/
691
692void
693AcpiTbSetTableLoadedFlag (
694 UINT32 TableIndex,
695 BOOLEAN IsLoaded)
696{
697
698 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
699 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
700 {
701 if (IsLoaded)
702 {
703 AcpiGbl_RootTableList.Tables[TableIndex].Flags |=
704 ACPI_TABLE_IS_LOADED;
705 }
706 else
707 {
708 AcpiGbl_RootTableList.Tables[TableIndex].Flags &=
709 ~ACPI_TABLE_IS_LOADED;
710 }
711 }
712
713 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
714}
715
| 170 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
171
172 /* Check if table is already registered */
173
174 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
175 {
176 if (!AcpiGbl_RootTableList.Tables[i].Pointer)
177 {
178 Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
179 if (ACPI_FAILURE (Status) ||
180 !AcpiGbl_RootTableList.Tables[i].Pointer)
181 {
182 continue;
183 }
184 }
185
186 /*
187 * Check for a table match on the entire table length,
188 * not just the header.
189 */
190 if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length)
191 {
192 continue;
193 }
194
195 if (ACPI_MEMCMP (TableDesc->Pointer,
196 AcpiGbl_RootTableList.Tables[i].Pointer,
197 AcpiGbl_RootTableList.Tables[i].Length))
198 {
199 continue;
200 }
201
202 /*
203 * Note: the current mechanism does not unregister a table if it is
204 * dynamically unloaded. The related namespace entries are deleted,
205 * but the table remains in the root table list.
206 *
207 * The assumption here is that the number of different tables that
208 * will be loaded is actually small, and there is minimal overhead
209 * in just keeping the table in case it is needed again.
210 *
211 * If this assumption changes in the future (perhaps on large
212 * machines with many table load/unload operations), tables will
213 * need to be unregistered when they are unloaded, and slots in the
214 * root table list should be reused when empty.
215 */
216
217 /*
218 * Table is already registered.
219 * We can delete the table that was passed as a parameter.
220 */
221 AcpiTbDeleteTable (TableDesc);
222 *TableIndex = i;
223
224 if (AcpiGbl_RootTableList.Tables[i].Flags & ACPI_TABLE_IS_LOADED)
225 {
226 /* Table is still loaded, this is an error */
227
228 Status = AE_ALREADY_EXISTS;
229 goto Release;
230 }
231 else
232 {
233 /* Table was unloaded, allow it to be reloaded */
234
235 TableDesc->Pointer = AcpiGbl_RootTableList.Tables[i].Pointer;
236 TableDesc->Address = AcpiGbl_RootTableList.Tables[i].Address;
237 Status = AE_OK;
238 goto PrintHeader;
239 }
240 }
241
242 /*
243 * ACPI Table Override:
244 * Allow the host to override dynamically loaded tables.
245 */
246 Status = AcpiOsTableOverride (TableDesc->Pointer, &OverrideTable);
247 if (ACPI_SUCCESS (Status) && OverrideTable)
248 {
249 ACPI_INFO ((AE_INFO,
250 "%4.4s @ 0x%p Table override, replaced with:",
251 TableDesc->Pointer->Signature,
252 ACPI_CAST_PTR (void, TableDesc->Address)));
253
254 /* We can delete the table that was passed as a parameter */
255
256 AcpiTbDeleteTable (TableDesc);
257
258 /* Setup descriptor for the new table */
259
260 TableDesc->Address = ACPI_PTR_TO_PHYSADDR (OverrideTable);
261 TableDesc->Pointer = OverrideTable;
262 TableDesc->Length = OverrideTable->Length;
263 TableDesc->Flags = ACPI_TABLE_ORIGIN_OVERRIDE;
264 }
265
266 /* Add the table to the global root table list */
267
268 Status = AcpiTbStoreTable (TableDesc->Address, TableDesc->Pointer,
269 TableDesc->Length, TableDesc->Flags, TableIndex);
270 if (ACPI_FAILURE (Status))
271 {
272 goto Release;
273 }
274
275PrintHeader:
276 AcpiTbPrintTableHeader (TableDesc->Address, TableDesc->Pointer);
277
278Release:
279 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
280 return_ACPI_STATUS (Status);
281}
282
283
284/*******************************************************************************
285 *
286 * FUNCTION: AcpiTbResizeRootTableList
287 *
288 * PARAMETERS: None
289 *
290 * RETURN: Status
291 *
292 * DESCRIPTION: Expand the size of global table array
293 *
294 ******************************************************************************/
295
296ACPI_STATUS
297AcpiTbResizeRootTableList (
298 void)
299{
300 ACPI_TABLE_DESC *Tables;
301
302
303 ACPI_FUNCTION_TRACE (TbResizeRootTableList);
304
305
306 /* AllowResize flag is a parameter to AcpiInitializeTables */
307
308 if (!(AcpiGbl_RootTableList.Flags & ACPI_ROOT_ALLOW_RESIZE))
309 {
310 ACPI_ERROR ((AE_INFO, "Resize of Root Table Array is not allowed"));
311 return_ACPI_STATUS (AE_SUPPORT);
312 }
313
314 /* Increase the Table Array size */
315
316 Tables = ACPI_ALLOCATE_ZEROED (
317 ((ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount +
318 ACPI_ROOT_TABLE_SIZE_INCREMENT) *
319 sizeof (ACPI_TABLE_DESC));
320 if (!Tables)
321 {
322 ACPI_ERROR ((AE_INFO, "Could not allocate new root table array"));
323 return_ACPI_STATUS (AE_NO_MEMORY);
324 }
325
326 /* Copy and free the previous table array */
327
328 if (AcpiGbl_RootTableList.Tables)
329 {
330 ACPI_MEMCPY (Tables, AcpiGbl_RootTableList.Tables,
331 (ACPI_SIZE) AcpiGbl_RootTableList.MaxTableCount * sizeof (ACPI_TABLE_DESC));
332
333 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
334 {
335 ACPI_FREE (AcpiGbl_RootTableList.Tables);
336 }
337 }
338
339 AcpiGbl_RootTableList.Tables = Tables;
340 AcpiGbl_RootTableList.MaxTableCount += ACPI_ROOT_TABLE_SIZE_INCREMENT;
341 AcpiGbl_RootTableList.Flags |= (UINT8) ACPI_ROOT_ORIGIN_ALLOCATED;
342
343 return_ACPI_STATUS (AE_OK);
344}
345
346
347/*******************************************************************************
348 *
349 * FUNCTION: AcpiTbStoreTable
350 *
351 * PARAMETERS: Address - Table address
352 * Table - Table header
353 * Length - Table length
354 * Flags - flags
355 *
356 * RETURN: Status and table index.
357 *
358 * DESCRIPTION: Add an ACPI table to the global table list
359 *
360 ******************************************************************************/
361
362ACPI_STATUS
363AcpiTbStoreTable (
364 ACPI_PHYSICAL_ADDRESS Address,
365 ACPI_TABLE_HEADER *Table,
366 UINT32 Length,
367 UINT8 Flags,
368 UINT32 *TableIndex)
369{
370 ACPI_STATUS Status;
371 ACPI_TABLE_DESC *NewTable;
372
373
374 /* Ensure that there is room for the table in the Root Table List */
375
376 if (AcpiGbl_RootTableList.CurrentTableCount >=
377 AcpiGbl_RootTableList.MaxTableCount)
378 {
379 Status = AcpiTbResizeRootTableList();
380 if (ACPI_FAILURE (Status))
381 {
382 return (Status);
383 }
384 }
385
386 NewTable = &AcpiGbl_RootTableList.Tables[AcpiGbl_RootTableList.CurrentTableCount];
387
388 /* Initialize added table */
389
390 NewTable->Address = Address;
391 NewTable->Pointer = Table;
392 NewTable->Length = Length;
393 NewTable->OwnerId = 0;
394 NewTable->Flags = Flags;
395
396 ACPI_MOVE_32_TO_32 (&NewTable->Signature, Table->Signature);
397
398 *TableIndex = AcpiGbl_RootTableList.CurrentTableCount;
399 AcpiGbl_RootTableList.CurrentTableCount++;
400 return (AE_OK);
401}
402
403
404/*******************************************************************************
405 *
406 * FUNCTION: AcpiTbDeleteTable
407 *
408 * PARAMETERS: TableIndex - Table index
409 *
410 * RETURN: None
411 *
412 * DESCRIPTION: Delete one internal ACPI table
413 *
414 ******************************************************************************/
415
416void
417AcpiTbDeleteTable (
418 ACPI_TABLE_DESC *TableDesc)
419{
420
421 /* Table must be mapped or allocated */
422
423 if (!TableDesc->Pointer)
424 {
425 return;
426 }
427
428 switch (TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK)
429 {
430 case ACPI_TABLE_ORIGIN_MAPPED:
431 AcpiOsUnmapMemory (TableDesc->Pointer, TableDesc->Length);
432 break;
433
434 case ACPI_TABLE_ORIGIN_ALLOCATED:
435 ACPI_FREE (TableDesc->Pointer);
436 break;
437
438 default:
439 break;
440 }
441
442 TableDesc->Pointer = NULL;
443}
444
445
446/*******************************************************************************
447 *
448 * FUNCTION: AcpiTbTerminate
449 *
450 * PARAMETERS: None
451 *
452 * RETURN: None
453 *
454 * DESCRIPTION: Delete all internal ACPI tables
455 *
456 ******************************************************************************/
457
458void
459AcpiTbTerminate (
460 void)
461{
462 UINT32 i;
463
464
465 ACPI_FUNCTION_TRACE (TbTerminate);
466
467
468 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
469
470 /* Delete the individual tables */
471
472 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; i++)
473 {
474 AcpiTbDeleteTable (&AcpiGbl_RootTableList.Tables[i]);
475 }
476
477 /*
478 * Delete the root table array if allocated locally. Array cannot be
479 * mapped, so we don't need to check for that flag.
480 */
481 if (AcpiGbl_RootTableList.Flags & ACPI_ROOT_ORIGIN_ALLOCATED)
482 {
483 ACPI_FREE (AcpiGbl_RootTableList.Tables);
484 }
485
486 AcpiGbl_RootTableList.Tables = NULL;
487 AcpiGbl_RootTableList.Flags = 0;
488 AcpiGbl_RootTableList.CurrentTableCount = 0;
489
490 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "ACPI Tables freed\n"));
491 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
492}
493
494
495/*******************************************************************************
496 *
497 * FUNCTION: AcpiTbDeleteNamespaceByOwner
498 *
499 * PARAMETERS: TableIndex - Table index
500 *
501 * RETURN: Status
502 *
503 * DESCRIPTION: Delete all namespace objects created when this table was loaded.
504 *
505 ******************************************************************************/
506
507ACPI_STATUS
508AcpiTbDeleteNamespaceByOwner (
509 UINT32 TableIndex)
510{
511 ACPI_OWNER_ID OwnerId;
512 ACPI_STATUS Status;
513
514
515 ACPI_FUNCTION_TRACE (TbDeleteNamespaceByOwner);
516
517
518 Status = AcpiUtAcquireMutex (ACPI_MTX_TABLES);
519 if (ACPI_FAILURE (Status))
520 {
521 return_ACPI_STATUS (Status);
522 }
523
524 if (TableIndex >= AcpiGbl_RootTableList.CurrentTableCount)
525 {
526 /* The table index does not exist */
527
528 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
529 return_ACPI_STATUS (AE_NOT_EXIST);
530 }
531
532 /* Get the owner ID for this table, used to delete namespace nodes */
533
534 OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
535 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
536
537 /*
538 * Need to acquire the namespace writer lock to prevent interference
539 * with any concurrent namespace walks. The interpreter must be
540 * released during the deletion since the acquisition of the deletion
541 * lock may block, and also since the execution of a namespace walk
542 * must be allowed to use the interpreter.
543 */
544 (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER);
545 Status = AcpiUtAcquireWriteLock (&AcpiGbl_NamespaceRwLock);
546
547 AcpiNsDeleteNamespaceByOwner (OwnerId);
548 if (ACPI_FAILURE (Status))
549 {
550 return_ACPI_STATUS (Status);
551 }
552
553 AcpiUtReleaseWriteLock (&AcpiGbl_NamespaceRwLock);
554
555 Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER);
556 return_ACPI_STATUS (Status);
557}
558
559
560/*******************************************************************************
561 *
562 * FUNCTION: AcpiTbAllocateOwnerId
563 *
564 * PARAMETERS: TableIndex - Table index
565 *
566 * RETURN: Status
567 *
568 * DESCRIPTION: Allocates OwnerId in TableDesc
569 *
570 ******************************************************************************/
571
572ACPI_STATUS
573AcpiTbAllocateOwnerId (
574 UINT32 TableIndex)
575{
576 ACPI_STATUS Status = AE_BAD_PARAMETER;
577
578
579 ACPI_FUNCTION_TRACE (TbAllocateOwnerId);
580
581
582 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
583 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
584 {
585 Status = AcpiUtAllocateOwnerId
586 (&(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
587 }
588
589 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
590 return_ACPI_STATUS (Status);
591}
592
593
594/*******************************************************************************
595 *
596 * FUNCTION: AcpiTbReleaseOwnerId
597 *
598 * PARAMETERS: TableIndex - Table index
599 *
600 * RETURN: Status
601 *
602 * DESCRIPTION: Releases OwnerId in TableDesc
603 *
604 ******************************************************************************/
605
606ACPI_STATUS
607AcpiTbReleaseOwnerId (
608 UINT32 TableIndex)
609{
610 ACPI_STATUS Status = AE_BAD_PARAMETER;
611
612
613 ACPI_FUNCTION_TRACE (TbReleaseOwnerId);
614
615
616 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
617 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
618 {
619 AcpiUtReleaseOwnerId (
620 &(AcpiGbl_RootTableList.Tables[TableIndex].OwnerId));
621 Status = AE_OK;
622 }
623
624 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
625 return_ACPI_STATUS (Status);
626}
627
628
629/*******************************************************************************
630 *
631 * FUNCTION: AcpiTbGetOwnerId
632 *
633 * PARAMETERS: TableIndex - Table index
634 * OwnerId - Where the table OwnerId is returned
635 *
636 * RETURN: Status
637 *
638 * DESCRIPTION: returns OwnerId for the ACPI table
639 *
640 ******************************************************************************/
641
642ACPI_STATUS
643AcpiTbGetOwnerId (
644 UINT32 TableIndex,
645 ACPI_OWNER_ID *OwnerId)
646{
647 ACPI_STATUS Status = AE_BAD_PARAMETER;
648
649
650 ACPI_FUNCTION_TRACE (TbGetOwnerId);
651
652
653 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
654 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
655 {
656 *OwnerId = AcpiGbl_RootTableList.Tables[TableIndex].OwnerId;
657 Status = AE_OK;
658 }
659
660 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
661 return_ACPI_STATUS (Status);
662}
663
664
665/*******************************************************************************
666 *
667 * FUNCTION: AcpiTbIsTableLoaded
668 *
669 * PARAMETERS: TableIndex - Table index
670 *
671 * RETURN: Table Loaded Flag
672 *
673 ******************************************************************************/
674
675BOOLEAN
676AcpiTbIsTableLoaded (
677 UINT32 TableIndex)
678{
679 BOOLEAN IsLoaded = FALSE;
680
681
682 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
683 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
684 {
685 IsLoaded = (BOOLEAN)
686 (AcpiGbl_RootTableList.Tables[TableIndex].Flags &
687 ACPI_TABLE_IS_LOADED);
688 }
689
690 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
691 return (IsLoaded);
692}
693
694
695/*******************************************************************************
696 *
697 * FUNCTION: AcpiTbSetTableLoadedFlag
698 *
699 * PARAMETERS: TableIndex - Table index
700 * IsLoaded - TRUE if table is loaded, FALSE otherwise
701 *
702 * RETURN: None
703 *
704 * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE.
705 *
706 ******************************************************************************/
707
708void
709AcpiTbSetTableLoadedFlag (
710 UINT32 TableIndex,
711 BOOLEAN IsLoaded)
712{
713
714 (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
715 if (TableIndex < AcpiGbl_RootTableList.CurrentTableCount)
716 {
717 if (IsLoaded)
718 {
719 AcpiGbl_RootTableList.Tables[TableIndex].Flags |=
720 ACPI_TABLE_IS_LOADED;
721 }
722 else
723 {
724 AcpiGbl_RootTableList.Tables[TableIndex].Flags &=
725 ~ACPI_TABLE_IS_LOADED;
726 }
727 }
728
729 (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
730}
731
|