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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" | |
ac0f06eb | 48 | #include "acevents.h" |
c418ce19 BM |
49 | |
50 | #define _COMPONENT ACPI_TABLES | |
51 | ACPI_MODULE_NAME("tbdata") | |
52 | ||
53 | /******************************************************************************* | |
54 | * | |
55 | * FUNCTION: acpi_tb_init_table_descriptor | |
56 | * | |
57 | * PARAMETERS: table_desc - Table descriptor | |
58 | * address - Physical address of the table | |
59 | * flags - Allocation flags of the table | |
60 | * table - Pointer to the table | |
61 | * | |
62 | * RETURN: None | |
63 | * | |
64 | * DESCRIPTION: Initialize a new table descriptor | |
65 | * | |
66 | ******************************************************************************/ | |
67 | void | |
68 | acpi_tb_init_table_descriptor(struct acpi_table_desc *table_desc, | |
69 | acpi_physical_address address, | |
70 | u8 flags, struct acpi_table_header *table) | |
71 | { | |
72 | ||
73 | /* | |
74 | * Initialize the table descriptor. Set the pointer to NULL, since the | |
75 | * table is not fully mapped at this time. | |
76 | */ | |
4fa4616e | 77 | memset(table_desc, 0, sizeof(struct acpi_table_desc)); |
c418ce19 BM |
78 | table_desc->address = address; |
79 | table_desc->length = table->length; | |
80 | table_desc->flags = flags; | |
81 | ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature); | |
82 | } | |
83 | ||
84 | /******************************************************************************* | |
85 | * | |
86 | * FUNCTION: acpi_tb_acquire_table | |
87 | * | |
88 | * PARAMETERS: table_desc - Table descriptor | |
89 | * table_ptr - Where table is returned | |
90 | * table_length - Where table length is returned | |
91 | * table_flags - Where table allocation flags are returned | |
92 | * | |
93 | * RETURN: Status | |
94 | * | |
95 | * DESCRIPTION: Acquire an ACPI table. It can be used for tables not | |
96 | * maintained in the acpi_gbl_root_table_list. | |
97 | * | |
98 | ******************************************************************************/ | |
99 | ||
100 | acpi_status | |
101 | acpi_tb_acquire_table(struct acpi_table_desc *table_desc, | |
102 | struct acpi_table_header **table_ptr, | |
103 | u32 *table_length, u8 *table_flags) | |
104 | { | |
105 | struct acpi_table_header *table = NULL; | |
106 | ||
107 | switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) { | |
108 | case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: | |
109 | ||
110 | table = | |
111 | acpi_os_map_memory(table_desc->address, table_desc->length); | |
112 | break; | |
113 | ||
114 | case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: | |
115 | case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: | |
116 | ||
6d3fd3cc LZ |
117 | table = ACPI_CAST_PTR(struct acpi_table_header, |
118 | ACPI_PHYSADDR_TO_PTR(table_desc-> | |
119 | address)); | |
c418ce19 BM |
120 | break; |
121 | ||
122 | default: | |
123 | ||
124 | break; | |
125 | } | |
126 | ||
127 | /* Table is not valid yet */ | |
128 | ||
129 | if (!table) { | |
130 | return (AE_NO_MEMORY); | |
131 | } | |
132 | ||
133 | /* Fill the return values */ | |
134 | ||
135 | *table_ptr = table; | |
136 | *table_length = table_desc->length; | |
137 | *table_flags = table_desc->flags; | |
138 | return (AE_OK); | |
139 | } | |
140 | ||
141 | /******************************************************************************* | |
142 | * | |
143 | * FUNCTION: acpi_tb_release_table | |
144 | * | |
145 | * PARAMETERS: table - Pointer for the table | |
146 | * table_length - Length for the table | |
147 | * table_flags - Allocation flags for the table | |
148 | * | |
149 | * RETURN: None | |
150 | * | |
151 | * DESCRIPTION: Release a table. The inverse of acpi_tb_acquire_table(). | |
152 | * | |
153 | ******************************************************************************/ | |
154 | ||
155 | void | |
156 | acpi_tb_release_table(struct acpi_table_header *table, | |
157 | u32 table_length, u8 table_flags) | |
158 | { | |
159 | ||
160 | switch (table_flags & ACPI_TABLE_ORIGIN_MASK) { | |
161 | case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: | |
162 | ||
163 | acpi_os_unmap_memory(table, table_length); | |
164 | break; | |
165 | ||
166 | case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: | |
167 | case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: | |
168 | default: | |
169 | ||
170 | break; | |
171 | } | |
172 | } | |
173 | ||
174 | /******************************************************************************* | |
175 | * | |
176 | * FUNCTION: acpi_tb_acquire_temp_table | |
177 | * | |
178 | * PARAMETERS: table_desc - Table descriptor to be acquired | |
179 | * address - Address of the table | |
180 | * flags - Allocation flags of the table | |
181 | * | |
182 | * RETURN: Status | |
183 | * | |
184 | * DESCRIPTION: This function validates the table header to obtain the length | |
185 | * of a table and fills the table descriptor to make its state as | |
186 | * "INSTALLED". Such a table descriptor is only used for verified | |
187 | * installation. | |
188 | * | |
189 | ******************************************************************************/ | |
190 | ||
191 | acpi_status | |
192 | acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc, | |
193 | acpi_physical_address address, u8 flags) | |
194 | { | |
195 | struct acpi_table_header *table_header; | |
196 | ||
197 | switch (flags & ACPI_TABLE_ORIGIN_MASK) { | |
198 | case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL: | |
199 | ||
200 | /* Get the length of the full table from the header */ | |
201 | ||
202 | table_header = | |
203 | acpi_os_map_memory(address, | |
204 | sizeof(struct acpi_table_header)); | |
205 | if (!table_header) { | |
206 | return (AE_NO_MEMORY); | |
207 | } | |
208 | ||
209 | acpi_tb_init_table_descriptor(table_desc, address, flags, | |
210 | table_header); | |
211 | acpi_os_unmap_memory(table_header, | |
212 | sizeof(struct acpi_table_header)); | |
213 | return (AE_OK); | |
214 | ||
215 | case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL: | |
216 | case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL: | |
217 | ||
6d3fd3cc LZ |
218 | table_header = ACPI_CAST_PTR(struct acpi_table_header, |
219 | ACPI_PHYSADDR_TO_PTR(address)); | |
c418ce19 BM |
220 | if (!table_header) { |
221 | return (AE_NO_MEMORY); | |
222 | } | |
223 | ||
224 | acpi_tb_init_table_descriptor(table_desc, address, flags, | |
225 | table_header); | |
226 | return (AE_OK); | |
227 | ||
228 | default: | |
229 | ||
230 | break; | |
231 | } | |
232 | ||
233 | /* Table is not valid yet */ | |
234 | ||
235 | return (AE_NO_MEMORY); | |
236 | } | |
237 | ||
238 | /******************************************************************************* | |
239 | * | |
240 | * FUNCTION: acpi_tb_release_temp_table | |
241 | * | |
242 | * PARAMETERS: table_desc - Table descriptor to be released | |
243 | * | |
244 | * RETURN: Status | |
245 | * | |
246 | * DESCRIPTION: The inverse of acpi_tb_acquire_temp_table(). | |
247 | * | |
248 | *****************************************************************************/ | |
249 | ||
250 | void acpi_tb_release_temp_table(struct acpi_table_desc *table_desc) | |
251 | { | |
252 | ||
253 | /* | |
254 | * Note that the .Address is maintained by the callers of | |
255 | * acpi_tb_acquire_temp_table(), thus do not invoke acpi_tb_uninstall_table() | |
256 | * where .Address will be freed. | |
257 | */ | |
258 | acpi_tb_invalidate_table(table_desc); | |
259 | } | |
260 | ||
261 | /****************************************************************************** | |
262 | * | |
263 | * FUNCTION: acpi_tb_validate_table | |
264 | * | |
265 | * PARAMETERS: table_desc - Table descriptor | |
266 | * | |
267 | * RETURN: Status | |
268 | * | |
269 | * DESCRIPTION: This function is called to validate the table, the returned | |
270 | * table descriptor is in "VALIDATED" state. | |
271 | * | |
272 | *****************************************************************************/ | |
273 | ||
274 | acpi_status acpi_tb_validate_table(struct acpi_table_desc *table_desc) | |
275 | { | |
276 | acpi_status status = AE_OK; | |
277 | ||
278 | ACPI_FUNCTION_TRACE(tb_validate_table); | |
279 | ||
280 | /* Validate the table if necessary */ | |
281 | ||
282 | if (!table_desc->pointer) { | |
283 | status = acpi_tb_acquire_table(table_desc, &table_desc->pointer, | |
284 | &table_desc->length, | |
285 | &table_desc->flags); | |
286 | if (!table_desc->pointer) { | |
287 | status = AE_NO_MEMORY; | |
288 | } | |
289 | } | |
290 | ||
291 | return_ACPI_STATUS(status); | |
292 | } | |
293 | ||
294 | /******************************************************************************* | |
295 | * | |
296 | * FUNCTION: acpi_tb_invalidate_table | |
297 | * | |
298 | * PARAMETERS: table_desc - Table descriptor | |
299 | * | |
300 | * RETURN: None | |
301 | * | |
302 | * DESCRIPTION: Invalidate one internal ACPI table, this is the inverse of | |
303 | * acpi_tb_validate_table(). | |
304 | * | |
305 | ******************************************************************************/ | |
306 | ||
307 | void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc) | |
308 | { | |
309 | ||
310 | ACPI_FUNCTION_TRACE(tb_invalidate_table); | |
311 | ||
312 | /* Table must be validated */ | |
313 | ||
314 | if (!table_desc->pointer) { | |
315 | return_VOID; | |
316 | } | |
317 | ||
318 | acpi_tb_release_table(table_desc->pointer, table_desc->length, | |
319 | table_desc->flags); | |
320 | table_desc->pointer = NULL; | |
321 | ||
322 | return_VOID; | |
323 | } | |
324 | ||
325 | /****************************************************************************** | |
326 | * | |
47d68c7f LZ |
327 | * FUNCTION: acpi_tb_validate_temp_table |
328 | * | |
329 | * PARAMETERS: table_desc - Table descriptor | |
330 | * | |
331 | * RETURN: Status | |
332 | * | |
333 | * DESCRIPTION: This function is called to validate the table, the returned | |
334 | * table descriptor is in "VALIDATED" state. | |
335 | * | |
336 | *****************************************************************************/ | |
337 | ||
338 | acpi_status acpi_tb_validate_temp_table(struct acpi_table_desc *table_desc) | |
339 | { | |
340 | ||
341 | if (!table_desc->pointer && !acpi_gbl_verify_table_checksum) { | |
342 | /* | |
343 | * Only validates the header of the table. | |
344 | * Note that Length contains the size of the mapping after invoking | |
345 | * this work around, this value is required by | |
346 | * acpi_tb_release_temp_table(). | |
347 | * We can do this because in acpi_init_table_descriptor(), the Length | |
348 | * field of the installed descriptor is filled with the actual | |
349 | * table length obtaining from the table header. | |
350 | */ | |
351 | table_desc->length = sizeof(struct acpi_table_header); | |
352 | } | |
353 | ||
354 | return (acpi_tb_validate_table(table_desc)); | |
355 | } | |
356 | ||
357 | /****************************************************************************** | |
358 | * | |
359 | * FUNCTION: acpi_tb_verify_temp_table | |
c418ce19 BM |
360 | * |
361 | * PARAMETERS: table_desc - Table descriptor | |
362 | * signature - Table signature to verify | |
363 | * | |
364 | * RETURN: Status | |
365 | * | |
366 | * DESCRIPTION: This function is called to validate and verify the table, the | |
367 | * returned table descriptor is in "VALIDATED" state. | |
368 | * | |
369 | *****************************************************************************/ | |
370 | ||
371 | acpi_status | |
f5c1e1c5 | 372 | acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc, char *signature) |
c418ce19 BM |
373 | { |
374 | acpi_status status = AE_OK; | |
375 | ||
47d68c7f | 376 | ACPI_FUNCTION_TRACE(tb_verify_temp_table); |
c418ce19 BM |
377 | |
378 | /* Validate the table */ | |
379 | ||
47d68c7f | 380 | status = acpi_tb_validate_temp_table(table_desc); |
c418ce19 BM |
381 | if (ACPI_FAILURE(status)) { |
382 | return_ACPI_STATUS(AE_NO_MEMORY); | |
383 | } | |
384 | ||
385 | /* If a particular signature is expected (DSDT/FACS), it must match */ | |
386 | ||
387 | if (signature && !ACPI_COMPARE_NAME(&table_desc->signature, signature)) { | |
388 | ACPI_BIOS_ERROR((AE_INFO, | |
389 | "Invalid signature 0x%X for ACPI table, expected [%s]", | |
390 | table_desc->signature.integer, signature)); | |
391 | status = AE_BAD_SIGNATURE; | |
392 | goto invalidate_and_exit; | |
393 | } | |
394 | ||
395 | /* Verify the checksum */ | |
396 | ||
47d68c7f LZ |
397 | if (acpi_gbl_verify_table_checksum) { |
398 | status = | |
399 | acpi_tb_verify_checksum(table_desc->pointer, | |
400 | table_desc->length); | |
401 | if (ACPI_FAILURE(status)) { | |
402 | ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, | |
1d0a0b2f | 403 | "%4.4s 0x%8.8X%8.8X" |
47d68c7f | 404 | " Attempted table install failed", |
6a0df32c BM |
405 | acpi_ut_valid_nameseg(table_desc-> |
406 | signature. | |
407 | ascii) ? | |
47d68c7f | 408 | table_desc->signature.ascii : "????", |
1d0a0b2f LZ |
409 | ACPI_FORMAT_UINT64(table_desc-> |
410 | address))); | |
1fad8738 | 411 | |
47d68c7f LZ |
412 | goto invalidate_and_exit; |
413 | } | |
c418ce19 BM |
414 | } |
415 | ||
416 | return_ACPI_STATUS(AE_OK); | |
417 | ||
418 | invalidate_and_exit: | |
419 | acpi_tb_invalidate_table(table_desc); | |
420 | return_ACPI_STATUS(status); | |
421 | } | |
422 | ||
423 | /******************************************************************************* | |
424 | * | |
425 | * FUNCTION: acpi_tb_resize_root_table_list | |
426 | * | |
427 | * PARAMETERS: None | |
428 | * | |
429 | * RETURN: Status | |
430 | * | |
431 | * DESCRIPTION: Expand the size of global table array | |
432 | * | |
433 | ******************************************************************************/ | |
434 | ||
435 | acpi_status acpi_tb_resize_root_table_list(void) | |
436 | { | |
437 | struct acpi_table_desc *tables; | |
438 | u32 table_count; | |
439 | ||
440 | ACPI_FUNCTION_TRACE(tb_resize_root_table_list); | |
441 | ||
442 | /* allow_resize flag is a parameter to acpi_initialize_tables */ | |
443 | ||
444 | if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) { | |
445 | ACPI_ERROR((AE_INFO, | |
446 | "Resize of Root Table Array is not allowed")); | |
447 | return_ACPI_STATUS(AE_SUPPORT); | |
448 | } | |
449 | ||
450 | /* Increase the Table Array size */ | |
451 | ||
452 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { | |
453 | table_count = acpi_gbl_root_table_list.max_table_count; | |
454 | } else { | |
455 | table_count = acpi_gbl_root_table_list.current_table_count; | |
456 | } | |
457 | ||
f5c1e1c5 | 458 | tables = ACPI_ALLOCATE_ZEROED(((acpi_size)table_count + |
c418ce19 BM |
459 | ACPI_ROOT_TABLE_SIZE_INCREMENT) * |
460 | sizeof(struct acpi_table_desc)); | |
461 | if (!tables) { | |
462 | ACPI_ERROR((AE_INFO, | |
463 | "Could not allocate new root table array")); | |
464 | return_ACPI_STATUS(AE_NO_MEMORY); | |
465 | } | |
466 | ||
467 | /* Copy and free the previous table array */ | |
468 | ||
469 | if (acpi_gbl_root_table_list.tables) { | |
4fa4616e | 470 | memcpy(tables, acpi_gbl_root_table_list.tables, |
f5c1e1c5 | 471 | (acpi_size)table_count * 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 | */ | |
c418ce19 | 617 | status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock); |
c418ce19 BM |
618 | if (ACPI_FAILURE(status)) { |
619 | return_ACPI_STATUS(status); | |
620 | } | |
9febcdc0 | 621 | acpi_ns_delete_namespace_by_owner(owner_id); |
c418ce19 | 622 | acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock); |
c418ce19 BM |
623 | return_ACPI_STATUS(status); |
624 | } | |
625 | ||
626 | /******************************************************************************* | |
627 | * | |
628 | * FUNCTION: acpi_tb_allocate_owner_id | |
629 | * | |
630 | * PARAMETERS: table_index - Table index | |
631 | * | |
632 | * RETURN: Status | |
633 | * | |
634 | * DESCRIPTION: Allocates owner_id in table_desc | |
635 | * | |
636 | ******************************************************************************/ | |
637 | ||
638 | acpi_status acpi_tb_allocate_owner_id(u32 table_index) | |
639 | { | |
640 | acpi_status status = AE_BAD_PARAMETER; | |
641 | ||
642 | ACPI_FUNCTION_TRACE(tb_allocate_owner_id); | |
643 | ||
644 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
645 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
646 | status = | |
647 | acpi_ut_allocate_owner_id(& | |
648 | (acpi_gbl_root_table_list. | |
649 | tables[table_index].owner_id)); | |
650 | } | |
651 | ||
652 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
653 | return_ACPI_STATUS(status); | |
654 | } | |
655 | ||
656 | /******************************************************************************* | |
657 | * | |
658 | * FUNCTION: acpi_tb_release_owner_id | |
659 | * | |
660 | * PARAMETERS: table_index - Table index | |
661 | * | |
662 | * RETURN: Status | |
663 | * | |
664 | * DESCRIPTION: Releases owner_id in table_desc | |
665 | * | |
666 | ******************************************************************************/ | |
667 | ||
668 | acpi_status acpi_tb_release_owner_id(u32 table_index) | |
669 | { | |
670 | acpi_status status = AE_BAD_PARAMETER; | |
671 | ||
672 | ACPI_FUNCTION_TRACE(tb_release_owner_id); | |
673 | ||
674 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
675 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
676 | acpi_ut_release_owner_id(& | |
677 | (acpi_gbl_root_table_list. | |
678 | tables[table_index].owner_id)); | |
679 | status = AE_OK; | |
680 | } | |
681 | ||
682 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
683 | return_ACPI_STATUS(status); | |
684 | } | |
685 | ||
686 | /******************************************************************************* | |
687 | * | |
688 | * FUNCTION: acpi_tb_get_owner_id | |
689 | * | |
690 | * PARAMETERS: table_index - Table index | |
691 | * owner_id - Where the table owner_id is returned | |
692 | * | |
693 | * RETURN: Status | |
694 | * | |
695 | * DESCRIPTION: returns owner_id for the ACPI table | |
696 | * | |
697 | ******************************************************************************/ | |
698 | ||
f5c1e1c5 | 699 | acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id *owner_id) |
c418ce19 BM |
700 | { |
701 | acpi_status status = AE_BAD_PARAMETER; | |
702 | ||
703 | ACPI_FUNCTION_TRACE(tb_get_owner_id); | |
704 | ||
705 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
706 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
707 | *owner_id = | |
708 | acpi_gbl_root_table_list.tables[table_index].owner_id; | |
709 | status = AE_OK; | |
710 | } | |
711 | ||
712 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
713 | return_ACPI_STATUS(status); | |
714 | } | |
715 | ||
716 | /******************************************************************************* | |
717 | * | |
718 | * FUNCTION: acpi_tb_is_table_loaded | |
719 | * | |
720 | * PARAMETERS: table_index - Index into the root table | |
721 | * | |
722 | * RETURN: Table Loaded Flag | |
723 | * | |
724 | ******************************************************************************/ | |
725 | ||
726 | u8 acpi_tb_is_table_loaded(u32 table_index) | |
727 | { | |
728 | u8 is_loaded = FALSE; | |
729 | ||
730 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
731 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
732 | is_loaded = (u8) | |
733 | (acpi_gbl_root_table_list.tables[table_index].flags & | |
734 | ACPI_TABLE_IS_LOADED); | |
735 | } | |
736 | ||
737 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
738 | return (is_loaded); | |
739 | } | |
740 | ||
741 | /******************************************************************************* | |
742 | * | |
743 | * FUNCTION: acpi_tb_set_table_loaded_flag | |
744 | * | |
745 | * PARAMETERS: table_index - Table index | |
746 | * is_loaded - TRUE if table is loaded, FALSE otherwise | |
747 | * | |
748 | * RETURN: None | |
749 | * | |
750 | * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. | |
751 | * | |
752 | ******************************************************************************/ | |
753 | ||
754 | void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded) | |
755 | { | |
756 | ||
757 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
758 | if (table_index < acpi_gbl_root_table_list.current_table_count) { | |
759 | if (is_loaded) { | |
760 | acpi_gbl_root_table_list.tables[table_index].flags |= | |
761 | ACPI_TABLE_IS_LOADED; | |
762 | } else { | |
763 | acpi_gbl_root_table_list.tables[table_index].flags &= | |
764 | ~ACPI_TABLE_IS_LOADED; | |
765 | } | |
766 | } | |
767 | ||
768 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
769 | } | |
ac0f06eb LZ |
770 | |
771 | /******************************************************************************* | |
772 | * | |
773 | * FUNCTION: acpi_tb_load_table | |
774 | * | |
775 | * PARAMETERS: table_index - Table index | |
776 | * parent_node - Where table index is returned | |
777 | * | |
778 | * RETURN: Status | |
779 | * | |
780 | * DESCRIPTION: Load an ACPI table | |
781 | * | |
782 | ******************************************************************************/ | |
783 | ||
784 | acpi_status | |
785 | acpi_tb_load_table(u32 table_index, struct acpi_namespace_node *parent_node) | |
786 | { | |
787 | struct acpi_table_header *table; | |
788 | acpi_status status; | |
789 | acpi_owner_id owner_id; | |
790 | ||
791 | ACPI_FUNCTION_TRACE(tb_load_table); | |
792 | ||
793 | /* | |
794 | * Note: Now table is "INSTALLED", it must be validated before | |
795 | * using. | |
796 | */ | |
797 | status = acpi_get_table_by_index(table_index, &table); | |
798 | if (ACPI_FAILURE(status)) { | |
799 | return_ACPI_STATUS(status); | |
800 | } | |
801 | ||
802 | status = acpi_ns_load_table(table_index, parent_node); | |
803 | ||
804 | /* Execute any module-level code that was found in the table */ | |
805 | ||
806 | if (!acpi_gbl_parse_table_as_term_list | |
807 | && acpi_gbl_group_module_level_code) { | |
808 | acpi_ns_exec_module_code_list(); | |
809 | } | |
810 | ||
811 | /* | |
812 | * Update GPEs for any new _Lxx/_Exx methods. Ignore errors. The host is | |
813 | * responsible for discovering any new wake GPEs by running _PRW methods | |
814 | * that may have been loaded by this table. | |
815 | */ | |
816 | status = acpi_tb_get_owner_id(table_index, &owner_id); | |
817 | if (ACPI_SUCCESS(status)) { | |
818 | acpi_ev_update_gpes(owner_id); | |
819 | } | |
820 | ||
821 | /* Invoke table handler if present */ | |
822 | ||
823 | if (acpi_gbl_table_handler) { | |
824 | (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table, | |
825 | acpi_gbl_table_handler_context); | |
826 | } | |
827 | ||
828 | return_ACPI_STATUS(status); | |
829 | } | |
830 | ||
831 | /******************************************************************************* | |
832 | * | |
833 | * FUNCTION: acpi_tb_install_and_load_table | |
834 | * | |
835 | * PARAMETERS: table - Pointer to the table | |
836 | * address - Physical address of the table | |
837 | * flags - Allocation flags of the table | |
838 | * table_index - Where table index is returned | |
839 | * | |
840 | * RETURN: Status | |
841 | * | |
842 | * DESCRIPTION: Install and load an ACPI table | |
843 | * | |
844 | ******************************************************************************/ | |
845 | ||
846 | acpi_status | |
847 | acpi_tb_install_and_load_table(struct acpi_table_header *table, | |
848 | acpi_physical_address address, | |
849 | u8 flags, u8 override, u32 *table_index) | |
850 | { | |
851 | acpi_status status; | |
852 | u32 i; | |
853 | acpi_owner_id owner_id; | |
854 | ||
855 | ACPI_FUNCTION_TRACE(acpi_load_table); | |
856 | ||
857 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
858 | ||
859 | /* Install the table and load it into the namespace */ | |
860 | ||
861 | status = acpi_tb_install_standard_table(address, flags, TRUE, | |
862 | override, &i); | |
863 | if (ACPI_FAILURE(status)) { | |
864 | goto unlock_and_exit; | |
865 | } | |
866 | ||
867 | /* | |
868 | * Note: Now table is "INSTALLED", it must be validated before | |
869 | * using. | |
870 | */ | |
871 | status = acpi_tb_validate_table(&acpi_gbl_root_table_list.tables[i]); | |
872 | if (ACPI_FAILURE(status)) { | |
873 | goto unlock_and_exit; | |
874 | } | |
875 | ||
876 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
877 | status = acpi_ns_load_table(i, acpi_gbl_root_node); | |
878 | ||
879 | /* Execute any module-level code that was found in the table */ | |
880 | ||
881 | if (!acpi_gbl_parse_table_as_term_list | |
882 | && acpi_gbl_group_module_level_code) { | |
883 | acpi_ns_exec_module_code_list(); | |
884 | } | |
885 | ||
886 | /* | |
887 | * Update GPEs for any new _Lxx/_Exx methods. Ignore errors. The host is | |
888 | * responsible for discovering any new wake GPEs by running _PRW methods | |
889 | * that may have been loaded by this table. | |
890 | */ | |
891 | status = acpi_tb_get_owner_id(i, &owner_id); | |
892 | if (ACPI_SUCCESS(status)) { | |
893 | acpi_ev_update_gpes(owner_id); | |
894 | } | |
895 | ||
896 | /* Invoke table handler if present */ | |
897 | ||
898 | if (acpi_gbl_table_handler) { | |
899 | (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table, | |
900 | acpi_gbl_table_handler_context); | |
901 | } | |
902 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
903 | ||
904 | unlock_and_exit: | |
905 | *table_index = i; | |
906 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
907 | return_ACPI_STATUS(status); | |
908 | } |