Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: tbinstal - ACPI table installation and removal | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
75a44ce0 | 8 | * Copyright (C) 2000 - 2008, Intel Corp. |
1da177e4 LT |
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 | ||
1da177e4 | 44 | #include <acpi/acpi.h> |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acnamesp.h" | |
47 | #include "actables.h" | |
1da177e4 | 48 | |
1da177e4 | 49 | #define _COMPONENT ACPI_TABLES |
4be44fcd | 50 | ACPI_MODULE_NAME("tbinstal") |
1da177e4 | 51 | |
f3d2e786 | 52 | /****************************************************************************** |
1da177e4 | 53 | * |
f3d2e786 | 54 | * FUNCTION: acpi_tb_verify_table |
1da177e4 | 55 | * |
f3d2e786 | 56 | * PARAMETERS: table_desc - table |
1da177e4 LT |
57 | * |
58 | * RETURN: Status | |
59 | * | |
f3d2e786 | 60 | * DESCRIPTION: this function is called to verify and map table |
1da177e4 | 61 | * |
f3d2e786 BM |
62 | *****************************************************************************/ |
63 | acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc) | |
1da177e4 | 64 | { |
428f2112 | 65 | acpi_status status = AE_OK; |
1da177e4 | 66 | |
f3d2e786 | 67 | ACPI_FUNCTION_TRACE(tb_verify_table); |
1da177e4 | 68 | |
f3d2e786 | 69 | /* Map the table if necessary */ |
44f6c012 | 70 | |
f3d2e786 | 71 | if (!table_desc->pointer) { |
428f2112 AS |
72 | if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) == |
73 | ACPI_TABLE_ORIGIN_MAPPED) { | |
74 | table_desc->pointer = | |
75 | acpi_os_map_memory(table_desc->address, | |
76 | table_desc->length); | |
77 | } | |
f3d2e786 BM |
78 | if (!table_desc->pointer) { |
79 | return_ACPI_STATUS(AE_NO_MEMORY); | |
1da177e4 | 80 | } |
f3d2e786 | 81 | } |
1da177e4 | 82 | |
f3d2e786 | 83 | /* FACS is the odd table, has no standard ACPI header and no checksum */ |
52fc0b02 | 84 | |
428f2112 | 85 | if (!ACPI_COMPARE_NAME(&table_desc->signature, ACPI_SIG_FACS)) { |
1da177e4 | 86 | |
428f2112 AS |
87 | /* Always calculate checksum, ignore bad checksum if requested */ |
88 | ||
89 | status = | |
90 | acpi_tb_verify_checksum(table_desc->pointer, | |
91 | table_desc->length); | |
92 | } | |
1da177e4 | 93 | |
c5fc42ac | 94 | return_ACPI_STATUS(status); |
1da177e4 LT |
95 | } |
96 | ||
1da177e4 LT |
97 | /******************************************************************************* |
98 | * | |
f3d2e786 | 99 | * FUNCTION: acpi_tb_add_table |
1da177e4 | 100 | * |
428f2112 | 101 | * PARAMETERS: table_desc - Table descriptor |
f3d2e786 | 102 | * table_index - Where the table index is returned |
1da177e4 LT |
103 | * |
104 | * RETURN: Status | |
105 | * | |
d3ccaff8 BM |
106 | * DESCRIPTION: This function is called to add an ACPI table. It is used to |
107 | * dynamically load tables via the Load and load_table AML | |
108 | * operators. | |
1da177e4 LT |
109 | * |
110 | ******************************************************************************/ | |
111 | ||
f3d2e786 | 112 | acpi_status |
67a119f9 | 113 | acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index) |
1da177e4 | 114 | { |
67a119f9 | 115 | u32 i; |
f3d2e786 | 116 | acpi_status status = AE_OK; |
d3ccaff8 | 117 | struct acpi_table_header *override_table = NULL; |
1da177e4 | 118 | |
f3d2e786 | 119 | ACPI_FUNCTION_TRACE(tb_add_table); |
1da177e4 | 120 | |
428f2112 AS |
121 | if (!table_desc->pointer) { |
122 | status = acpi_tb_verify_table(table_desc); | |
123 | if (ACPI_FAILURE(status) || !table_desc->pointer) { | |
124 | return_ACPI_STATUS(status); | |
125 | } | |
126 | } | |
127 | ||
bc45b1d3 BM |
128 | /* |
129 | * Originally, we checked the table signature for "SSDT" or "PSDT" here. | |
130 | * Next, we added support for OEMx tables, signature "OEM". | |
131 | * Valid tables were encountered with a null signature, so we've just | |
132 | * given up on validating the signature, since it seems to be a waste | |
133 | * of code. The original code was removed (05/2008). | |
134 | */ | |
428f2112 | 135 | |
f3d2e786 | 136 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
1da177e4 | 137 | |
f3d2e786 BM |
138 | /* Check if table is already registered */ |
139 | ||
140 | for (i = 0; i < acpi_gbl_root_table_list.count; ++i) { | |
141 | if (!acpi_gbl_root_table_list.tables[i].pointer) { | |
142 | status = | |
143 | acpi_tb_verify_table(&acpi_gbl_root_table_list. | |
144 | tables[i]); | |
145 | if (ACPI_FAILURE(status) | |
146 | || !acpi_gbl_root_table_list.tables[i].pointer) { | |
147 | continue; | |
148 | } | |
149 | } | |
150 | ||
a6f30539 BM |
151 | /* |
152 | * Check for a table match on the entire table length, | |
153 | * not just the header. | |
154 | */ | |
155 | if (table_desc->length != | |
156 | acpi_gbl_root_table_list.tables[i].length) { | |
157 | continue; | |
158 | } | |
e56f5617 | 159 | |
428f2112 AS |
160 | if (ACPI_MEMCMP(table_desc->pointer, |
161 | acpi_gbl_root_table_list.tables[i].pointer, | |
a6f30539 | 162 | acpi_gbl_root_table_list.tables[i].length)) { |
f3d2e786 BM |
163 | continue; |
164 | } | |
165 | ||
e56f5617 BM |
166 | /* |
167 | * Note: the current mechanism does not unregister a table if it is | |
168 | * dynamically unloaded. The related namespace entries are deleted, | |
169 | * but the table remains in the root table list. | |
170 | * | |
171 | * The assumption here is that the number of different tables that | |
172 | * will be loaded is actually small, and there is minimal overhead | |
173 | * in just keeping the table in case it is needed again. | |
174 | * | |
175 | * If this assumption changes in the future (perhaps on large | |
176 | * machines with many table load/unload operations), tables will | |
177 | * need to be unregistered when they are unloaded, and slots in the | |
178 | * root table list should be reused when empty. | |
179 | */ | |
180 | ||
181 | /* | |
182 | * Table is already registered. | |
183 | * We can delete the table that was passed as a parameter. | |
184 | */ | |
428f2112 | 185 | acpi_tb_delete_table(table_desc); |
f3d2e786 | 186 | *table_index = i; |
e56f5617 BM |
187 | |
188 | if (acpi_gbl_root_table_list.tables[i]. | |
189 | flags & ACPI_TABLE_IS_LOADED) { | |
190 | ||
191 | /* Table is still loaded, this is an error */ | |
192 | ||
193 | status = AE_ALREADY_EXISTS; | |
194 | goto release; | |
195 | } else { | |
196 | /* Table was unloaded, allow it to be reloaded */ | |
197 | ||
198 | table_desc->pointer = | |
199 | acpi_gbl_root_table_list.tables[i].pointer; | |
200 | table_desc->address = | |
201 | acpi_gbl_root_table_list.tables[i].address; | |
202 | status = AE_OK; | |
203 | goto print_header; | |
204 | } | |
1da177e4 LT |
205 | } |
206 | ||
d3ccaff8 BM |
207 | /* |
208 | * ACPI Table Override: | |
209 | * Allow the host to override dynamically loaded tables. | |
210 | */ | |
211 | status = acpi_os_table_override(table_desc->pointer, &override_table); | |
212 | if (ACPI_SUCCESS(status) && override_table) { | |
213 | ACPI_INFO((AE_INFO, | |
214 | "%4.4s @ 0x%p Table override, replaced with:", | |
215 | table_desc->pointer->signature, | |
216 | ACPI_CAST_PTR(void, table_desc->address))); | |
217 | ||
218 | /* We can delete the table that was passed as a parameter */ | |
219 | ||
220 | acpi_tb_delete_table(table_desc); | |
221 | ||
222 | /* Setup descriptor for the new table */ | |
223 | ||
224 | table_desc->address = ACPI_PTR_TO_PHYSADDR(override_table); | |
225 | table_desc->pointer = override_table; | |
226 | table_desc->length = override_table->length; | |
227 | table_desc->flags = ACPI_TABLE_ORIGIN_OVERRIDE; | |
228 | } | |
229 | ||
e56f5617 BM |
230 | /* Add the table to the global root table list */ |
231 | ||
428f2112 AS |
232 | status = acpi_tb_store_table(table_desc->address, table_desc->pointer, |
233 | table_desc->length, table_desc->flags, | |
234 | table_index); | |
4be44fcd | 235 | if (ACPI_FAILURE(status)) { |
f3d2e786 | 236 | goto release; |
0c9938cc RM |
237 | } |
238 | ||
e56f5617 | 239 | print_header: |
428f2112 | 240 | acpi_tb_print_table_header(table_desc->address, table_desc->pointer); |
1da177e4 | 241 | |
f3d2e786 | 242 | release: |
4be44fcd LB |
243 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
244 | return_ACPI_STATUS(status); | |
1da177e4 LT |
245 | } |
246 | ||
1da177e4 LT |
247 | /******************************************************************************* |
248 | * | |
f3d2e786 | 249 | * FUNCTION: acpi_tb_resize_root_table_list |
1da177e4 | 250 | * |
f3d2e786 | 251 | * PARAMETERS: None |
1da177e4 LT |
252 | * |
253 | * RETURN: Status | |
254 | * | |
f3d2e786 | 255 | * DESCRIPTION: Expand the size of global table array |
1da177e4 LT |
256 | * |
257 | ******************************************************************************/ | |
258 | ||
f3d2e786 | 259 | acpi_status acpi_tb_resize_root_table_list(void) |
1da177e4 | 260 | { |
f3d2e786 | 261 | struct acpi_table_desc *tables; |
1da177e4 | 262 | |
f3d2e786 | 263 | ACPI_FUNCTION_TRACE(tb_resize_root_table_list); |
1da177e4 | 264 | |
f3d2e786 | 265 | /* allow_resize flag is a parameter to acpi_initialize_tables */ |
1da177e4 | 266 | |
c5fc42ac | 267 | if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) { |
f3d2e786 BM |
268 | ACPI_ERROR((AE_INFO, |
269 | "Resize of Root Table Array is not allowed")); | |
270 | return_ACPI_STATUS(AE_SUPPORT); | |
1da177e4 LT |
271 | } |
272 | ||
f3d2e786 BM |
273 | /* Increase the Table Array size */ |
274 | ||
67a119f9 | 275 | tables = ACPI_ALLOCATE_ZEROED(((acpi_size) acpi_gbl_root_table_list. |
ec41f193 BM |
276 | size + |
277 | ACPI_ROOT_TABLE_SIZE_INCREMENT) * | |
278 | sizeof(struct acpi_table_desc)); | |
f3d2e786 BM |
279 | if (!tables) { |
280 | ACPI_ERROR((AE_INFO, | |
281 | "Could not allocate new root table array")); | |
282 | return_ACPI_STATUS(AE_NO_MEMORY); | |
1da177e4 LT |
283 | } |
284 | ||
f3d2e786 BM |
285 | /* Copy and free the previous table array */ |
286 | ||
287 | if (acpi_gbl_root_table_list.tables) { | |
288 | ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, | |
67a119f9 | 289 | (acpi_size) acpi_gbl_root_table_list.size * |
f3d2e786 BM |
290 | sizeof(struct acpi_table_desc)); |
291 | ||
c5fc42ac | 292 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { |
f3d2e786 BM |
293 | ACPI_FREE(acpi_gbl_root_table_list.tables); |
294 | } | |
1da177e4 LT |
295 | } |
296 | ||
f3d2e786 BM |
297 | acpi_gbl_root_table_list.tables = tables; |
298 | acpi_gbl_root_table_list.size += ACPI_ROOT_TABLE_SIZE_INCREMENT; | |
c5fc42ac | 299 | acpi_gbl_root_table_list.flags |= (u8) ACPI_ROOT_ORIGIN_ALLOCATED; |
1da177e4 | 300 | |
f3d2e786 | 301 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
302 | } |
303 | ||
1da177e4 LT |
304 | /******************************************************************************* |
305 | * | |
f3d2e786 | 306 | * FUNCTION: acpi_tb_store_table |
1da177e4 | 307 | * |
f3d2e786 BM |
308 | * PARAMETERS: Address - Table address |
309 | * Table - Table header | |
310 | * Length - Table length | |
311 | * Flags - flags | |
1da177e4 | 312 | * |
f3d2e786 | 313 | * RETURN: Status and table index. |
1da177e4 | 314 | * |
f3d2e786 | 315 | * DESCRIPTION: Add an ACPI table to the global table list |
1da177e4 LT |
316 | * |
317 | ******************************************************************************/ | |
318 | ||
319 | acpi_status | |
f3d2e786 BM |
320 | acpi_tb_store_table(acpi_physical_address address, |
321 | struct acpi_table_header *table, | |
67a119f9 | 322 | u32 length, u8 flags, u32 *table_index) |
1da177e4 | 323 | { |
f3d2e786 | 324 | acpi_status status = AE_OK; |
1da177e4 | 325 | |
f3d2e786 | 326 | /* Ensure that there is room for the table in the Root Table List */ |
f9f4601f | 327 | |
f3d2e786 BM |
328 | if (acpi_gbl_root_table_list.count >= acpi_gbl_root_table_list.size) { |
329 | status = acpi_tb_resize_root_table_list(); | |
330 | if (ACPI_FAILURE(status)) { | |
331 | return (status); | |
332 | } | |
f9f4601f RM |
333 | } |
334 | ||
f3d2e786 BM |
335 | /* Initialize added table */ |
336 | ||
337 | acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count]. | |
338 | address = address; | |
339 | acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count]. | |
340 | pointer = table; | |
341 | acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].length = | |
342 | length; | |
343 | acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count]. | |
344 | owner_id = 0; | |
345 | acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list.count].flags = | |
346 | flags; | |
347 | ||
348 | ACPI_MOVE_32_TO_32(& | |
349 | (acpi_gbl_root_table_list. | |
350 | tables[acpi_gbl_root_table_list.count].signature), | |
351 | table->signature); | |
352 | ||
353 | *table_index = acpi_gbl_root_table_list.count; | |
354 | acpi_gbl_root_table_list.count++; | |
355 | return (status); | |
356 | } | |
1da177e4 | 357 | |
f3d2e786 BM |
358 | /******************************************************************************* |
359 | * | |
360 | * FUNCTION: acpi_tb_delete_table | |
361 | * | |
362 | * PARAMETERS: table_index - Table index | |
363 | * | |
364 | * RETURN: None | |
365 | * | |
366 | * DESCRIPTION: Delete one internal ACPI table | |
367 | * | |
368 | ******************************************************************************/ | |
1da177e4 | 369 | |
428f2112 | 370 | void acpi_tb_delete_table(struct acpi_table_desc *table_desc) |
f3d2e786 | 371 | { |
f3d2e786 | 372 | /* Table must be mapped or allocated */ |
f3d2e786 BM |
373 | if (!table_desc->pointer) { |
374 | return; | |
1da177e4 | 375 | } |
428f2112 AS |
376 | switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) { |
377 | case ACPI_TABLE_ORIGIN_MAPPED: | |
378 | acpi_os_unmap_memory(table_desc->pointer, table_desc->length); | |
379 | break; | |
380 | case ACPI_TABLE_ORIGIN_ALLOCATED: | |
f3d2e786 | 381 | ACPI_FREE(table_desc->pointer); |
428f2112 AS |
382 | break; |
383 | default:; | |
1da177e4 LT |
384 | } |
385 | ||
f3d2e786 | 386 | table_desc->pointer = NULL; |
1da177e4 LT |
387 | } |
388 | ||
1da177e4 LT |
389 | /******************************************************************************* |
390 | * | |
f3d2e786 | 391 | * FUNCTION: acpi_tb_terminate |
1da177e4 | 392 | * |
f3d2e786 | 393 | * PARAMETERS: None |
1da177e4 | 394 | * |
f3d2e786 | 395 | * RETURN: None |
1da177e4 LT |
396 | * |
397 | * DESCRIPTION: Delete all internal ACPI tables | |
398 | * | |
399 | ******************************************************************************/ | |
400 | ||
f3d2e786 | 401 | void acpi_tb_terminate(void) |
1da177e4 | 402 | { |
67a119f9 | 403 | u32 i; |
f3d2e786 BM |
404 | |
405 | ACPI_FUNCTION_TRACE(tb_terminate); | |
406 | ||
407 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
408 | ||
409 | /* Delete the individual tables */ | |
410 | ||
411 | for (i = 0; i < acpi_gbl_root_table_list.count; ++i) { | |
428f2112 | 412 | acpi_tb_delete_table(&acpi_gbl_root_table_list.tables[i]); |
f3d2e786 | 413 | } |
1da177e4 LT |
414 | |
415 | /* | |
f3d2e786 BM |
416 | * Delete the root table array if allocated locally. Array cannot be |
417 | * mapped, so we don't need to check for that flag. | |
1da177e4 | 418 | */ |
c5fc42ac | 419 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { |
f3d2e786 | 420 | ACPI_FREE(acpi_gbl_root_table_list.tables); |
1da177e4 | 421 | } |
f3d2e786 BM |
422 | |
423 | acpi_gbl_root_table_list.tables = NULL; | |
424 | acpi_gbl_root_table_list.flags = 0; | |
425 | acpi_gbl_root_table_list.count = 0; | |
426 | ||
427 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n")); | |
428 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
1da177e4 LT |
429 | } |
430 | ||
1da177e4 LT |
431 | /******************************************************************************* |
432 | * | |
f3d2e786 | 433 | * FUNCTION: acpi_tb_delete_namespace_by_owner |
1da177e4 | 434 | * |
f3d2e786 | 435 | * PARAMETERS: table_index - Table index |
1da177e4 | 436 | * |
8a335a23 | 437 | * RETURN: Status |
1da177e4 | 438 | * |
f3d2e786 | 439 | * DESCRIPTION: Delete all namespace objects created when this table was loaded. |
1da177e4 LT |
440 | * |
441 | ******************************************************************************/ | |
442 | ||
8a335a23 | 443 | acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index) |
1da177e4 | 444 | { |
f3d2e786 | 445 | acpi_owner_id owner_id; |
8a335a23 BM |
446 | acpi_status status; |
447 | ||
448 | ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner); | |
449 | ||
450 | status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
451 | if (ACPI_FAILURE(status)) { | |
452 | return_ACPI_STATUS(status); | |
453 | } | |
454 | ||
455 | if (table_index >= acpi_gbl_root_table_list.count) { | |
456 | ||
457 | /* The table index does not exist */ | |
1da177e4 | 458 | |
f3d2e786 | 459 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
8a335a23 | 460 | return_ACPI_STATUS(AE_NOT_EXIST); |
1da177e4 LT |
461 | } |
462 | ||
8a335a23 BM |
463 | /* Get the owner ID for this table, used to delete namespace nodes */ |
464 | ||
465 | owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id; | |
f3d2e786 | 466 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
8a335a23 BM |
467 | |
468 | /* | |
469 | * Need to acquire the namespace writer lock to prevent interference | |
470 | * with any concurrent namespace walks. The interpreter must be | |
471 | * released during the deletion since the acquisition of the deletion | |
472 | * lock may block, and also since the execution of a namespace walk | |
473 | * must be allowed to use the interpreter. | |
474 | */ | |
475 | acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); | |
476 | status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock); | |
477 | ||
f3d2e786 | 478 | acpi_ns_delete_namespace_by_owner(owner_id); |
8a335a23 BM |
479 | if (ACPI_FAILURE(status)) { |
480 | return_ACPI_STATUS(status); | |
481 | } | |
482 | ||
483 | acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock); | |
484 | ||
485 | status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER); | |
486 | return_ACPI_STATUS(status); | |
f3d2e786 | 487 | } |
1da177e4 | 488 | |
f3d2e786 BM |
489 | /******************************************************************************* |
490 | * | |
491 | * FUNCTION: acpi_tb_allocate_owner_id | |
492 | * | |
493 | * PARAMETERS: table_index - Table index | |
494 | * | |
495 | * RETURN: Status | |
496 | * | |
497 | * DESCRIPTION: Allocates owner_id in table_desc | |
498 | * | |
499 | ******************************************************************************/ | |
1da177e4 | 500 | |
67a119f9 | 501 | acpi_status acpi_tb_allocate_owner_id(u32 table_index) |
f3d2e786 BM |
502 | { |
503 | acpi_status status = AE_BAD_PARAMETER; | |
1da177e4 | 504 | |
f3d2e786 | 505 | ACPI_FUNCTION_TRACE(tb_allocate_owner_id); |
1da177e4 | 506 | |
f3d2e786 BM |
507 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
508 | if (table_index < acpi_gbl_root_table_list.count) { | |
509 | status = acpi_ut_allocate_owner_id | |
510 | (&(acpi_gbl_root_table_list.tables[table_index].owner_id)); | |
1da177e4 LT |
511 | } |
512 | ||
4be44fcd | 513 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
f3d2e786 | 514 | return_ACPI_STATUS(status); |
1da177e4 LT |
515 | } |
516 | ||
1da177e4 LT |
517 | /******************************************************************************* |
518 | * | |
f3d2e786 | 519 | * FUNCTION: acpi_tb_release_owner_id |
1da177e4 | 520 | * |
f3d2e786 | 521 | * PARAMETERS: table_index - Table index |
1da177e4 | 522 | * |
f3d2e786 | 523 | * RETURN: Status |
1da177e4 | 524 | * |
f3d2e786 | 525 | * DESCRIPTION: Releases owner_id in table_desc |
1da177e4 LT |
526 | * |
527 | ******************************************************************************/ | |
528 | ||
67a119f9 | 529 | acpi_status acpi_tb_release_owner_id(u32 table_index) |
1da177e4 | 530 | { |
f3d2e786 | 531 | acpi_status status = AE_BAD_PARAMETER; |
1da177e4 | 532 | |
f3d2e786 | 533 | ACPI_FUNCTION_TRACE(tb_release_owner_id); |
1da177e4 | 534 | |
f3d2e786 BM |
535 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
536 | if (table_index < acpi_gbl_root_table_list.count) { | |
537 | acpi_ut_release_owner_id(& | |
538 | (acpi_gbl_root_table_list. | |
539 | tables[table_index].owner_id)); | |
540 | status = AE_OK; | |
1da177e4 LT |
541 | } |
542 | ||
f3d2e786 BM |
543 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
544 | return_ACPI_STATUS(status); | |
1da177e4 LT |
545 | } |
546 | ||
1da177e4 LT |
547 | /******************************************************************************* |
548 | * | |
f3d2e786 | 549 | * FUNCTION: acpi_tb_get_owner_id |
1da177e4 | 550 | * |
f3d2e786 BM |
551 | * PARAMETERS: table_index - Table index |
552 | * owner_id - Where the table owner_id is returned | |
1da177e4 | 553 | * |
f3d2e786 | 554 | * RETURN: Status |
1da177e4 | 555 | * |
f3d2e786 | 556 | * DESCRIPTION: returns owner_id for the ACPI table |
1da177e4 LT |
557 | * |
558 | ******************************************************************************/ | |
559 | ||
67a119f9 | 560 | acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id *owner_id) |
1da177e4 | 561 | { |
f3d2e786 | 562 | acpi_status status = AE_BAD_PARAMETER; |
1da177e4 | 563 | |
f3d2e786 | 564 | ACPI_FUNCTION_TRACE(tb_get_owner_id); |
1da177e4 | 565 | |
f3d2e786 BM |
566 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
567 | if (table_index < acpi_gbl_root_table_list.count) { | |
568 | *owner_id = | |
569 | acpi_gbl_root_table_list.tables[table_index].owner_id; | |
570 | status = AE_OK; | |
1da177e4 LT |
571 | } |
572 | ||
f3d2e786 BM |
573 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
574 | return_ACPI_STATUS(status); | |
575 | } | |
1da177e4 | 576 | |
f3d2e786 BM |
577 | /******************************************************************************* |
578 | * | |
579 | * FUNCTION: acpi_tb_is_table_loaded | |
580 | * | |
581 | * PARAMETERS: table_index - Table index | |
582 | * | |
583 | * RETURN: Table Loaded Flag | |
584 | * | |
585 | ******************************************************************************/ | |
1da177e4 | 586 | |
67a119f9 | 587 | u8 acpi_tb_is_table_loaded(u32 table_index) |
f3d2e786 BM |
588 | { |
589 | u8 is_loaded = FALSE; | |
1da177e4 | 590 | |
f3d2e786 BM |
591 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
592 | if (table_index < acpi_gbl_root_table_list.count) { | |
593 | is_loaded = (u8) | |
ec41f193 BM |
594 | (acpi_gbl_root_table_list.tables[table_index].flags & |
595 | ACPI_TABLE_IS_LOADED); | |
1da177e4 LT |
596 | } |
597 | ||
f3d2e786 BM |
598 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
599 | return (is_loaded); | |
600 | } | |
f6dd9221 | 601 | |
f3d2e786 BM |
602 | /******************************************************************************* |
603 | * | |
604 | * FUNCTION: acpi_tb_set_table_loaded_flag | |
605 | * | |
606 | * PARAMETERS: table_index - Table index | |
607 | * is_loaded - TRUE if table is loaded, FALSE otherwise | |
608 | * | |
609 | * RETURN: None | |
610 | * | |
611 | * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. | |
612 | * | |
613 | ******************************************************************************/ | |
1da177e4 | 614 | |
67a119f9 | 615 | void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded) |
f3d2e786 | 616 | { |
1da177e4 | 617 | |
f3d2e786 BM |
618 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
619 | if (table_index < acpi_gbl_root_table_list.count) { | |
620 | if (is_loaded) { | |
621 | acpi_gbl_root_table_list.tables[table_index].flags |= | |
c5fc42ac | 622 | ACPI_TABLE_IS_LOADED; |
f3d2e786 BM |
623 | } else { |
624 | acpi_gbl_root_table_list.tables[table_index].flags &= | |
c5fc42ac | 625 | ~ACPI_TABLE_IS_LOADED; |
f3d2e786 BM |
626 | } |
627 | } | |
1da177e4 | 628 | |
f3d2e786 | 629 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
1da177e4 | 630 | } |