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c418ce19 BM |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: tbdata - Table manager data structure functions | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
c418ce19 BM |
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 | |
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 | */ | |
4fa4616e | 76 | memset(table_desc, 0, sizeof(struct acpi_table_desc)); |
c418ce19 BM |
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 | |
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 | ||
6d3fd3cc LZ |
116 | table = ACPI_CAST_PTR(struct acpi_table_header, |
117 | ACPI_PHYSADDR_TO_PTR(table_desc-> | |
118 | address)); | |
c418ce19 BM |
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 | |
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 | |
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 | ||
6d3fd3cc LZ |
217 | table_header = ACPI_CAST_PTR(struct acpi_table_header, |
218 | ACPI_PHYSADDR_TO_PTR(address)); | |
c418ce19 BM |
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 | ||
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 | ||
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 | ||
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 | * | |
47d68c7f LZ |
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 | ||
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 | |
c418ce19 BM |
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 | |
47d68c7f | 371 | acpi_tb_verify_temp_table(struct acpi_table_desc * table_desc, char *signature) |
c418ce19 BM |
372 | { |
373 | acpi_status status = AE_OK; | |
374 | ||
47d68c7f | 375 | ACPI_FUNCTION_TRACE(tb_verify_temp_table); |
c418ce19 BM |
376 | |
377 | /* Validate the table */ | |
378 | ||
47d68c7f | 379 | status = acpi_tb_validate_temp_table(table_desc); |
c418ce19 BM |
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 | ||
47d68c7f LZ |
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, | |
1d0a0b2f | 402 | "%4.4s 0x%8.8X%8.8X" |
47d68c7f LZ |
403 | " Attempted table install failed", |
404 | acpi_ut_valid_acpi_name(table_desc-> | |
405 | signature. | |
406 | ascii) ? | |
407 | table_desc->signature.ascii : "????", | |
1d0a0b2f LZ |
408 | ACPI_FORMAT_UINT64(table_desc-> |
409 | address))); | |
1fad8738 | 410 | |
47d68c7f LZ |
411 | goto invalidate_and_exit; |
412 | } | |
c418ce19 BM |
413 | } |
414 | ||
415 | return_ACPI_STATUS(AE_OK); | |
416 | ||
417 | invalidate_and_exit: | |
418 | acpi_tb_invalidate_table(table_desc); | |
419 | return_ACPI_STATUS(status); | |
420 | } | |
421 | ||
422 | /******************************************************************************* | |
423 | * | |
424 | * FUNCTION: acpi_tb_resize_root_table_list | |
425 | * | |
426 | * PARAMETERS: None | |
427 | * | |
428 | * RETURN: Status | |
429 | * | |
430 | * DESCRIPTION: Expand the size of global table array | |
431 | * | |
432 | ******************************************************************************/ | |
433 | ||
434 | acpi_status acpi_tb_resize_root_table_list(void) | |
435 | { | |
436 | struct acpi_table_desc *tables; | |
437 | u32 table_count; | |
438 | ||
439 | ACPI_FUNCTION_TRACE(tb_resize_root_table_list); | |
440 | ||
441 | /* allow_resize flag is a parameter to acpi_initialize_tables */ | |
442 | ||
443 | if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) { | |
444 | ACPI_ERROR((AE_INFO, | |
445 | "Resize of Root Table Array is not allowed")); | |
446 | return_ACPI_STATUS(AE_SUPPORT); | |
447 | } | |
448 | ||
449 | /* Increase the Table Array size */ | |
450 | ||
451 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { | |
452 | table_count = acpi_gbl_root_table_list.max_table_count; | |
453 | } else { | |
454 | table_count = acpi_gbl_root_table_list.current_table_count; | |
455 | } | |
456 | ||
457 | tables = ACPI_ALLOCATE_ZEROED(((acpi_size) table_count + | |
458 | ACPI_ROOT_TABLE_SIZE_INCREMENT) * | |
459 | sizeof(struct acpi_table_desc)); | |
460 | if (!tables) { | |
461 | ACPI_ERROR((AE_INFO, | |
462 | "Could not allocate new root table array")); | |
463 | return_ACPI_STATUS(AE_NO_MEMORY); | |
464 | } | |
465 | ||
466 | /* Copy and free the previous table array */ | |
467 | ||
468 | if (acpi_gbl_root_table_list.tables) { | |
4fa4616e BM |
469 | memcpy(tables, acpi_gbl_root_table_list.tables, |
470 | (acpi_size) table_count * | |
471 | sizeof(struct acpi_table_desc)); | |
c418ce19 BM |
472 | |
473 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { | |
474 | ACPI_FREE(acpi_gbl_root_table_list.tables); | |
475 | } | |
476 | } | |
477 | ||
478 | acpi_gbl_root_table_list.tables = tables; | |
479 | acpi_gbl_root_table_list.max_table_count = | |
480 | table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT; | |
481 | acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED; | |
482 | ||
483 | return_ACPI_STATUS(AE_OK); | |
484 | } | |
485 | ||
486 | /******************************************************************************* | |
487 | * | |
76cffa79 | 488 | * FUNCTION: acpi_tb_get_next_table_descriptor |
c418ce19 BM |
489 | * |
490 | * PARAMETERS: table_index - Where table index is returned | |
76cffa79 | 491 | * table_desc - Where table descriptor is returned |
c418ce19 | 492 | * |
76cffa79 | 493 | * RETURN: Status and table index/descriptor. |
c418ce19 BM |
494 | * |
495 | * DESCRIPTION: Allocate a new ACPI table entry to the global table list | |
496 | * | |
497 | ******************************************************************************/ | |
498 | ||
76cffa79 LZ |
499 | acpi_status |
500 | acpi_tb_get_next_table_descriptor(u32 *table_index, | |
501 | struct acpi_table_desc **table_desc) | |
c418ce19 BM |
502 | { |
503 | acpi_status status; | |
76cffa79 | 504 | u32 i; |
c418ce19 BM |
505 | |
506 | /* Ensure that there is room for the table in the Root Table List */ | |
507 | ||
508 | if (acpi_gbl_root_table_list.current_table_count >= | |
509 | acpi_gbl_root_table_list.max_table_count) { | |
510 | status = acpi_tb_resize_root_table_list(); | |
511 | if (ACPI_FAILURE(status)) { | |
512 | return (status); | |
513 | } | |
514 | } | |
515 | ||
76cffa79 | 516 | i = acpi_gbl_root_table_list.current_table_count; |
c418ce19 | 517 | acpi_gbl_root_table_list.current_table_count++; |
76cffa79 LZ |
518 | |
519 | if (table_index) { | |
520 | *table_index = i; | |
521 | } | |
522 | if (table_desc) { | |
523 | *table_desc = &acpi_gbl_root_table_list.tables[i]; | |
524 | } | |
525 | ||
c418ce19 BM |
526 | return (AE_OK); |
527 | } | |
528 | ||
529 | /******************************************************************************* | |
530 | * | |
531 | * FUNCTION: acpi_tb_terminate | |
532 | * | |
533 | * PARAMETERS: None | |
534 | * | |
535 | * RETURN: None | |
536 | * | |
537 | * DESCRIPTION: Delete all internal ACPI tables | |
538 | * | |
539 | ******************************************************************************/ | |
540 | ||
541 | void acpi_tb_terminate(void) | |
542 | { | |
543 | u32 i; | |
544 | ||
545 | ACPI_FUNCTION_TRACE(tb_terminate); | |
546 | ||
547 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
548 | ||
549 | /* Delete the individual tables */ | |
550 | ||
551 | for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) { | |
552 | acpi_tb_uninstall_table(&acpi_gbl_root_table_list.tables[i]); | |
553 | } | |
554 | ||
555 | /* | |
556 | * Delete the root table array if allocated locally. Array cannot be | |
557 | * mapped, so we don't need to check for that flag. | |
558 | */ | |
559 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { | |
560 | ACPI_FREE(acpi_gbl_root_table_list.tables); | |
561 | } | |
562 | ||
563 | acpi_gbl_root_table_list.tables = NULL; | |
564 | acpi_gbl_root_table_list.flags = 0; | |
565 | acpi_gbl_root_table_list.current_table_count = 0; | |
566 | ||
567 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n")); | |
568 | ||
569 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
570 | return_VOID; | |
571 | } | |
572 | ||
573 | /******************************************************************************* | |
574 | * | |
575 | * FUNCTION: acpi_tb_delete_namespace_by_owner | |
576 | * | |
577 | * PARAMETERS: table_index - Table index | |
578 | * | |
579 | * RETURN: Status | |
580 | * | |
581 | * DESCRIPTION: Delete all namespace objects created when this table was loaded. | |
582 | * | |
583 | ******************************************************************************/ | |
584 | ||
585 | acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index) | |
586 | { | |
587 | acpi_owner_id owner_id; | |
588 | acpi_status status; | |
589 | ||
590 | ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner); | |
591 | ||
592 | status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
593 | if (ACPI_FAILURE(status)) { | |
594 | return_ACPI_STATUS(status); | |
595 | } | |
596 | ||
597 | if (table_index >= acpi_gbl_root_table_list.current_table_count) { | |
598 | ||
599 | /* The table index does not exist */ | |
600 | ||
601 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
602 | return_ACPI_STATUS(AE_NOT_EXIST); | |
603 | } | |
604 | ||
605 | /* Get the owner ID for this table, used to delete namespace nodes */ | |
606 | ||
607 | owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id; | |
608 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
609 | ||
610 | /* | |
611 | * Need to acquire the namespace writer lock to prevent interference | |
612 | * with any concurrent namespace walks. The interpreter must be | |
613 | * released during the deletion since the acquisition of the deletion | |
614 | * lock may block, and also since the execution of a namespace walk | |
615 | * must be allowed to use the interpreter. | |
616 | */ | |
617 | (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); | |
618 | status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock); | |
619 | ||
620 | acpi_ns_delete_namespace_by_owner(owner_id); | |
621 | if (ACPI_FAILURE(status)) { | |
622 | return_ACPI_STATUS(status); | |
623 | } | |
624 | ||
625 | acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock); | |
626 | ||
627 | status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER); | |
628 | return_ACPI_STATUS(status); | |
629 | } | |
630 | ||
631 | /******************************************************************************* | |
632 | * | |
633 | * FUNCTION: acpi_tb_allocate_owner_id | |
634 | * | |
635 | * PARAMETERS: table_index - Table index | |
636 | * | |
637 | * RETURN: Status | |
638 | * | |
639 | * DESCRIPTION: Allocates owner_id in table_desc | |
640 | * | |
641 | ******************************************************************************/ | |
642 | ||
643 | acpi_status acpi_tb_allocate_owner_id(u32 table_index) | |
644 | { | |
645 | acpi_status status = AE_BAD_PARAMETER; | |
646 | ||
647 | ACPI_FUNCTION_TRACE(tb_allocate_owner_id); | |
648 | ||
649 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
650 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
651 | status = | |
652 | acpi_ut_allocate_owner_id(& | |
653 | (acpi_gbl_root_table_list. | |
654 | tables[table_index].owner_id)); | |
655 | } | |
656 | ||
657 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
658 | return_ACPI_STATUS(status); | |
659 | } | |
660 | ||
661 | /******************************************************************************* | |
662 | * | |
663 | * FUNCTION: acpi_tb_release_owner_id | |
664 | * | |
665 | * PARAMETERS: table_index - Table index | |
666 | * | |
667 | * RETURN: Status | |
668 | * | |
669 | * DESCRIPTION: Releases owner_id in table_desc | |
670 | * | |
671 | ******************************************************************************/ | |
672 | ||
673 | acpi_status acpi_tb_release_owner_id(u32 table_index) | |
674 | { | |
675 | acpi_status status = AE_BAD_PARAMETER; | |
676 | ||
677 | ACPI_FUNCTION_TRACE(tb_release_owner_id); | |
678 | ||
679 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
680 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
681 | acpi_ut_release_owner_id(& | |
682 | (acpi_gbl_root_table_list. | |
683 | tables[table_index].owner_id)); | |
684 | status = AE_OK; | |
685 | } | |
686 | ||
687 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
688 | return_ACPI_STATUS(status); | |
689 | } | |
690 | ||
691 | /******************************************************************************* | |
692 | * | |
693 | * FUNCTION: acpi_tb_get_owner_id | |
694 | * | |
695 | * PARAMETERS: table_index - Table index | |
696 | * owner_id - Where the table owner_id is returned | |
697 | * | |
698 | * RETURN: Status | |
699 | * | |
700 | * DESCRIPTION: returns owner_id for the ACPI table | |
701 | * | |
702 | ******************************************************************************/ | |
703 | ||
704 | acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id * owner_id) | |
705 | { | |
706 | acpi_status status = AE_BAD_PARAMETER; | |
707 | ||
708 | ACPI_FUNCTION_TRACE(tb_get_owner_id); | |
709 | ||
710 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
711 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
712 | *owner_id = | |
713 | acpi_gbl_root_table_list.tables[table_index].owner_id; | |
714 | status = AE_OK; | |
715 | } | |
716 | ||
717 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
718 | return_ACPI_STATUS(status); | |
719 | } | |
720 | ||
721 | /******************************************************************************* | |
722 | * | |
723 | * FUNCTION: acpi_tb_is_table_loaded | |
724 | * | |
725 | * PARAMETERS: table_index - Index into the root table | |
726 | * | |
727 | * RETURN: Table Loaded Flag | |
728 | * | |
729 | ******************************************************************************/ | |
730 | ||
731 | u8 acpi_tb_is_table_loaded(u32 table_index) | |
732 | { | |
733 | u8 is_loaded = FALSE; | |
734 | ||
735 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
736 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
737 | is_loaded = (u8) | |
738 | (acpi_gbl_root_table_list.tables[table_index].flags & | |
739 | ACPI_TABLE_IS_LOADED); | |
740 | } | |
741 | ||
742 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
743 | return (is_loaded); | |
744 | } | |
745 | ||
746 | /******************************************************************************* | |
747 | * | |
748 | * FUNCTION: acpi_tb_set_table_loaded_flag | |
749 | * | |
750 | * PARAMETERS: table_index - Table index | |
751 | * is_loaded - TRUE if table is loaded, FALSE otherwise | |
752 | * | |
753 | * RETURN: None | |
754 | * | |
755 | * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. | |
756 | * | |
757 | ******************************************************************************/ | |
758 | ||
759 | void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded) | |
760 | { | |
761 | ||
762 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
763 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
764 | if (is_loaded) { | |
765 | acpi_gbl_root_table_list.tables[table_index].flags |= | |
766 | ACPI_TABLE_IS_LOADED; | |
767 | } else { | |
768 | acpi_gbl_root_table_list.tables[table_index].flags &= | |
769 | ~ACPI_TABLE_IS_LOADED; | |
770 | } | |
771 | } | |
772 | ||
773 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
774 | } |