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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: tbinstal - ACPI table installation and removal | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
77848130 | 8 | * Copyright (C) 2000 - 2012, 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; |
1da177e4 | 117 | |
f3d2e786 | 118 | ACPI_FUNCTION_TRACE(tb_add_table); |
1da177e4 | 119 | |
428f2112 AS |
120 | if (!table_desc->pointer) { |
121 | status = acpi_tb_verify_table(table_desc); | |
122 | if (ACPI_FAILURE(status) || !table_desc->pointer) { | |
123 | return_ACPI_STATUS(status); | |
124 | } | |
125 | } | |
126 | ||
bc45b1d3 | 127 | /* |
c8cefe30 BM |
128 | * Validate the incoming table signature. |
129 | * | |
130 | * 1) Originally, we checked the table signature for "SSDT" or "PSDT". | |
131 | * 2) We added support for OEMx tables, signature "OEM". | |
132 | * 3) Valid tables were encountered with a null signature, so we just | |
133 | * gave up on validating the signature, (05/2008). | |
134 | * 4) We encountered non-AML tables such as the MADT, which caused | |
135 | * interpreter errors and kernel faults. So now, we once again allow | |
136 | * only "SSDT", "OEMx", and now, also a null signature. (05/2011). | |
bc45b1d3 | 137 | */ |
c8cefe30 BM |
138 | if ((table_desc->pointer->signature[0] != 0x00) && |
139 | (!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT)) | |
140 | && (ACPI_STRNCMP(table_desc->pointer->signature, "OEM", 3))) { | |
141 | ACPI_ERROR((AE_INFO, | |
142 | "Table has invalid signature [%4.4s] (0x%8.8X), must be SSDT or OEMx", | |
143 | acpi_ut_valid_acpi_name(*(u32 *)table_desc-> | |
144 | pointer-> | |
145 | signature) ? table_desc-> | |
146 | pointer->signature : "????", | |
147 | *(u32 *)table_desc->pointer->signature)); | |
148 | ||
149 | return_ACPI_STATUS(AE_BAD_SIGNATURE); | |
150 | } | |
428f2112 | 151 | |
f3d2e786 | 152 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
1da177e4 | 153 | |
f3d2e786 BM |
154 | /* Check if table is already registered */ |
155 | ||
b9ee2043 | 156 | for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) { |
f3d2e786 BM |
157 | if (!acpi_gbl_root_table_list.tables[i].pointer) { |
158 | status = | |
159 | acpi_tb_verify_table(&acpi_gbl_root_table_list. | |
160 | tables[i]); | |
161 | if (ACPI_FAILURE(status) | |
162 | || !acpi_gbl_root_table_list.tables[i].pointer) { | |
163 | continue; | |
164 | } | |
165 | } | |
166 | ||
a6f30539 BM |
167 | /* |
168 | * Check for a table match on the entire table length, | |
169 | * not just the header. | |
170 | */ | |
171 | if (table_desc->length != | |
172 | acpi_gbl_root_table_list.tables[i].length) { | |
173 | continue; | |
174 | } | |
e56f5617 | 175 | |
428f2112 AS |
176 | if (ACPI_MEMCMP(table_desc->pointer, |
177 | acpi_gbl_root_table_list.tables[i].pointer, | |
a6f30539 | 178 | acpi_gbl_root_table_list.tables[i].length)) { |
f3d2e786 BM |
179 | continue; |
180 | } | |
181 | ||
e56f5617 BM |
182 | /* |
183 | * Note: the current mechanism does not unregister a table if it is | |
184 | * dynamically unloaded. The related namespace entries are deleted, | |
185 | * but the table remains in the root table list. | |
186 | * | |
187 | * The assumption here is that the number of different tables that | |
188 | * will be loaded is actually small, and there is minimal overhead | |
189 | * in just keeping the table in case it is needed again. | |
190 | * | |
191 | * If this assumption changes in the future (perhaps on large | |
192 | * machines with many table load/unload operations), tables will | |
193 | * need to be unregistered when they are unloaded, and slots in the | |
194 | * root table list should be reused when empty. | |
195 | */ | |
196 | ||
197 | /* | |
198 | * Table is already registered. | |
199 | * We can delete the table that was passed as a parameter. | |
200 | */ | |
428f2112 | 201 | acpi_tb_delete_table(table_desc); |
f3d2e786 | 202 | *table_index = i; |
e56f5617 BM |
203 | |
204 | if (acpi_gbl_root_table_list.tables[i]. | |
205 | flags & ACPI_TABLE_IS_LOADED) { | |
206 | ||
207 | /* Table is still loaded, this is an error */ | |
208 | ||
209 | status = AE_ALREADY_EXISTS; | |
210 | goto release; | |
211 | } else { | |
212 | /* Table was unloaded, allow it to be reloaded */ | |
213 | ||
214 | table_desc->pointer = | |
215 | acpi_gbl_root_table_list.tables[i].pointer; | |
216 | table_desc->address = | |
217 | acpi_gbl_root_table_list.tables[i].address; | |
218 | status = AE_OK; | |
219 | goto print_header; | |
220 | } | |
1da177e4 LT |
221 | } |
222 | ||
d3ccaff8 BM |
223 | /* |
224 | * ACPI Table Override: | |
225 | * Allow the host to override dynamically loaded tables. | |
f7b004a1 BM |
226 | * NOTE: the table is fully mapped at this point, and the mapping will |
227 | * be deleted by tb_table_override if the table is actually overridden. | |
d3ccaff8 | 228 | */ |
f7b004a1 | 229 | (void)acpi_tb_table_override(table_desc->pointer, table_desc); |
d3ccaff8 | 230 | |
e56f5617 BM |
231 | /* Add the table to the global root table list */ |
232 | ||
428f2112 AS |
233 | status = acpi_tb_store_table(table_desc->address, table_desc->pointer, |
234 | table_desc->length, table_desc->flags, | |
235 | table_index); | |
4be44fcd | 236 | if (ACPI_FAILURE(status)) { |
f3d2e786 | 237 | goto release; |
0c9938cc RM |
238 | } |
239 | ||
e56f5617 | 240 | print_header: |
428f2112 | 241 | acpi_tb_print_table_header(table_desc->address, table_desc->pointer); |
1da177e4 | 242 | |
f3d2e786 | 243 | release: |
4be44fcd LB |
244 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
245 | return_ACPI_STATUS(status); | |
1da177e4 LT |
246 | } |
247 | ||
f7b004a1 BM |
248 | /******************************************************************************* |
249 | * | |
250 | * FUNCTION: acpi_tb_table_override | |
251 | * | |
252 | * PARAMETERS: table_header - Header for the original table | |
253 | * table_desc - Table descriptor initialized for the | |
254 | * original table. May or may not be mapped. | |
255 | * | |
256 | * RETURN: Pointer to the entire new table. NULL if table not overridden. | |
257 | * If overridden, installs the new table within the input table | |
258 | * descriptor. | |
259 | * | |
260 | * DESCRIPTION: Attempt table override by calling the OSL override functions. | |
261 | * Note: If the table is overridden, then the entire new table | |
262 | * is mapped and returned by this function. | |
263 | * | |
264 | ******************************************************************************/ | |
265 | ||
266 | struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header | |
267 | *table_header, | |
268 | struct acpi_table_desc | |
269 | *table_desc) | |
270 | { | |
271 | acpi_status status; | |
272 | struct acpi_table_header *new_table = NULL; | |
273 | acpi_physical_address new_address = 0; | |
274 | u32 new_table_length = 0; | |
275 | u8 new_flags; | |
276 | char *override_type; | |
277 | ||
278 | /* (1) Attempt logical override (returns a logical address) */ | |
279 | ||
280 | status = acpi_os_table_override(table_header, &new_table); | |
281 | if (ACPI_SUCCESS(status) && new_table) { | |
282 | new_address = ACPI_PTR_TO_PHYSADDR(new_table); | |
283 | new_table_length = new_table->length; | |
284 | new_flags = ACPI_TABLE_ORIGIN_OVERRIDE; | |
285 | override_type = "Logical"; | |
286 | goto finish_override; | |
287 | } | |
288 | ||
289 | /* (2) Attempt physical override (returns a physical address) */ | |
290 | ||
291 | status = acpi_os_physical_table_override(table_header, | |
292 | &new_address, | |
293 | &new_table_length); | |
294 | if (ACPI_SUCCESS(status) && new_address && new_table_length) { | |
295 | ||
296 | /* Map the entire new table */ | |
297 | ||
298 | new_table = acpi_os_map_memory(new_address, new_table_length); | |
299 | if (!new_table) { | |
300 | ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, | |
301 | "%4.4s %p Attempted physical table override failed", | |
302 | table_header->signature, | |
303 | ACPI_CAST_PTR(void, | |
304 | table_desc->address))); | |
305 | return (NULL); | |
306 | } | |
307 | ||
308 | override_type = "Physical"; | |
309 | new_flags = ACPI_TABLE_ORIGIN_MAPPED; | |
310 | goto finish_override; | |
311 | } | |
312 | ||
313 | return (NULL); /* There was no override */ | |
314 | ||
315 | finish_override: | |
316 | ||
317 | ACPI_INFO((AE_INFO, | |
318 | "%4.4s %p %s table override, new table: %p", | |
319 | table_header->signature, | |
320 | ACPI_CAST_PTR(void, table_desc->address), | |
321 | override_type, new_table)); | |
322 | ||
323 | /* We can now unmap/delete the original table (if fully mapped) */ | |
324 | ||
325 | acpi_tb_delete_table(table_desc); | |
326 | ||
327 | /* Setup descriptor for the new table */ | |
328 | ||
329 | table_desc->address = new_address; | |
330 | table_desc->pointer = new_table; | |
331 | table_desc->length = new_table_length; | |
332 | table_desc->flags = new_flags; | |
333 | ||
334 | return (new_table); | |
335 | } | |
336 | ||
1da177e4 LT |
337 | /******************************************************************************* |
338 | * | |
f3d2e786 | 339 | * FUNCTION: acpi_tb_resize_root_table_list |
1da177e4 | 340 | * |
f3d2e786 | 341 | * PARAMETERS: None |
1da177e4 LT |
342 | * |
343 | * RETURN: Status | |
344 | * | |
f3d2e786 | 345 | * DESCRIPTION: Expand the size of global table array |
1da177e4 LT |
346 | * |
347 | ******************************************************************************/ | |
348 | ||
f3d2e786 | 349 | acpi_status acpi_tb_resize_root_table_list(void) |
1da177e4 | 350 | { |
f3d2e786 | 351 | struct acpi_table_desc *tables; |
1da177e4 | 352 | |
f3d2e786 | 353 | ACPI_FUNCTION_TRACE(tb_resize_root_table_list); |
1da177e4 | 354 | |
f3d2e786 | 355 | /* allow_resize flag is a parameter to acpi_initialize_tables */ |
1da177e4 | 356 | |
c5fc42ac | 357 | if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) { |
f3d2e786 BM |
358 | ACPI_ERROR((AE_INFO, |
359 | "Resize of Root Table Array is not allowed")); | |
360 | return_ACPI_STATUS(AE_SUPPORT); | |
1da177e4 LT |
361 | } |
362 | ||
f3d2e786 BM |
363 | /* Increase the Table Array size */ |
364 | ||
67a119f9 | 365 | tables = ACPI_ALLOCATE_ZEROED(((acpi_size) acpi_gbl_root_table_list. |
b9ee2043 | 366 | max_table_count + |
ec41f193 BM |
367 | ACPI_ROOT_TABLE_SIZE_INCREMENT) * |
368 | sizeof(struct acpi_table_desc)); | |
f3d2e786 BM |
369 | if (!tables) { |
370 | ACPI_ERROR((AE_INFO, | |
371 | "Could not allocate new root table array")); | |
372 | return_ACPI_STATUS(AE_NO_MEMORY); | |
1da177e4 LT |
373 | } |
374 | ||
f3d2e786 BM |
375 | /* Copy and free the previous table array */ |
376 | ||
377 | if (acpi_gbl_root_table_list.tables) { | |
378 | ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, | |
b9ee2043 BM |
379 | (acpi_size) acpi_gbl_root_table_list. |
380 | max_table_count * sizeof(struct acpi_table_desc)); | |
f3d2e786 | 381 | |
c5fc42ac | 382 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { |
f3d2e786 BM |
383 | ACPI_FREE(acpi_gbl_root_table_list.tables); |
384 | } | |
1da177e4 LT |
385 | } |
386 | ||
f3d2e786 | 387 | acpi_gbl_root_table_list.tables = tables; |
b9ee2043 BM |
388 | acpi_gbl_root_table_list.max_table_count += |
389 | ACPI_ROOT_TABLE_SIZE_INCREMENT; | |
390 | acpi_gbl_root_table_list.flags |= (u8)ACPI_ROOT_ORIGIN_ALLOCATED; | |
1da177e4 | 391 | |
f3d2e786 | 392 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
393 | } |
394 | ||
1da177e4 LT |
395 | /******************************************************************************* |
396 | * | |
f3d2e786 | 397 | * FUNCTION: acpi_tb_store_table |
1da177e4 | 398 | * |
f3d2e786 BM |
399 | * PARAMETERS: Address - Table address |
400 | * Table - Table header | |
401 | * Length - Table length | |
402 | * Flags - flags | |
1da177e4 | 403 | * |
f3d2e786 | 404 | * RETURN: Status and table index. |
1da177e4 | 405 | * |
f3d2e786 | 406 | * DESCRIPTION: Add an ACPI table to the global table list |
1da177e4 LT |
407 | * |
408 | ******************************************************************************/ | |
409 | ||
410 | acpi_status | |
f3d2e786 BM |
411 | acpi_tb_store_table(acpi_physical_address address, |
412 | struct acpi_table_header *table, | |
67a119f9 | 413 | u32 length, u8 flags, u32 *table_index) |
1da177e4 | 414 | { |
b9ee2043 BM |
415 | acpi_status status; |
416 | struct acpi_table_desc *new_table; | |
1da177e4 | 417 | |
f3d2e786 | 418 | /* Ensure that there is room for the table in the Root Table List */ |
f9f4601f | 419 | |
b9ee2043 BM |
420 | if (acpi_gbl_root_table_list.current_table_count >= |
421 | acpi_gbl_root_table_list.max_table_count) { | |
f3d2e786 BM |
422 | status = acpi_tb_resize_root_table_list(); |
423 | if (ACPI_FAILURE(status)) { | |
424 | return (status); | |
425 | } | |
f9f4601f RM |
426 | } |
427 | ||
b9ee2043 BM |
428 | new_table = |
429 | &acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list. | |
430 | current_table_count]; | |
431 | ||
f3d2e786 BM |
432 | /* Initialize added table */ |
433 | ||
b9ee2043 BM |
434 | new_table->address = address; |
435 | new_table->pointer = table; | |
436 | new_table->length = length; | |
437 | new_table->owner_id = 0; | |
438 | new_table->flags = flags; | |
439 | ||
440 | ACPI_MOVE_32_TO_32(&new_table->signature, table->signature); | |
441 | ||
442 | *table_index = acpi_gbl_root_table_list.current_table_count; | |
443 | acpi_gbl_root_table_list.current_table_count++; | |
444 | return (AE_OK); | |
f3d2e786 | 445 | } |
1da177e4 | 446 | |
f3d2e786 BM |
447 | /******************************************************************************* |
448 | * | |
449 | * FUNCTION: acpi_tb_delete_table | |
450 | * | |
451 | * PARAMETERS: table_index - Table index | |
452 | * | |
453 | * RETURN: None | |
454 | * | |
455 | * DESCRIPTION: Delete one internal ACPI table | |
456 | * | |
457 | ******************************************************************************/ | |
1da177e4 | 458 | |
428f2112 | 459 | void acpi_tb_delete_table(struct acpi_table_desc *table_desc) |
f3d2e786 | 460 | { |
f3d2e786 | 461 | /* Table must be mapped or allocated */ |
f3d2e786 BM |
462 | if (!table_desc->pointer) { |
463 | return; | |
1da177e4 | 464 | } |
428f2112 AS |
465 | switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) { |
466 | case ACPI_TABLE_ORIGIN_MAPPED: | |
467 | acpi_os_unmap_memory(table_desc->pointer, table_desc->length); | |
468 | break; | |
469 | case ACPI_TABLE_ORIGIN_ALLOCATED: | |
f3d2e786 | 470 | ACPI_FREE(table_desc->pointer); |
428f2112 | 471 | break; |
f7b004a1 BM |
472 | |
473 | /* Not mapped or allocated, there is nothing we can do */ | |
474 | ||
475 | default: | |
476 | return; | |
1da177e4 LT |
477 | } |
478 | ||
f3d2e786 | 479 | table_desc->pointer = NULL; |
1da177e4 LT |
480 | } |
481 | ||
1da177e4 LT |
482 | /******************************************************************************* |
483 | * | |
f3d2e786 | 484 | * FUNCTION: acpi_tb_terminate |
1da177e4 | 485 | * |
f3d2e786 | 486 | * PARAMETERS: None |
1da177e4 | 487 | * |
f3d2e786 | 488 | * RETURN: None |
1da177e4 LT |
489 | * |
490 | * DESCRIPTION: Delete all internal ACPI tables | |
491 | * | |
492 | ******************************************************************************/ | |
493 | ||
f3d2e786 | 494 | void acpi_tb_terminate(void) |
1da177e4 | 495 | { |
67a119f9 | 496 | u32 i; |
f3d2e786 BM |
497 | |
498 | ACPI_FUNCTION_TRACE(tb_terminate); | |
499 | ||
500 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
501 | ||
502 | /* Delete the individual tables */ | |
503 | ||
b9ee2043 | 504 | for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) { |
428f2112 | 505 | acpi_tb_delete_table(&acpi_gbl_root_table_list.tables[i]); |
f3d2e786 | 506 | } |
1da177e4 LT |
507 | |
508 | /* | |
f3d2e786 BM |
509 | * Delete the root table array if allocated locally. Array cannot be |
510 | * mapped, so we don't need to check for that flag. | |
1da177e4 | 511 | */ |
c5fc42ac | 512 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { |
f3d2e786 | 513 | ACPI_FREE(acpi_gbl_root_table_list.tables); |
1da177e4 | 514 | } |
f3d2e786 BM |
515 | |
516 | acpi_gbl_root_table_list.tables = NULL; | |
517 | acpi_gbl_root_table_list.flags = 0; | |
b9ee2043 | 518 | acpi_gbl_root_table_list.current_table_count = 0; |
f3d2e786 BM |
519 | |
520 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n")); | |
521 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
1da177e4 LT |
522 | } |
523 | ||
1da177e4 LT |
524 | /******************************************************************************* |
525 | * | |
f3d2e786 | 526 | * FUNCTION: acpi_tb_delete_namespace_by_owner |
1da177e4 | 527 | * |
f3d2e786 | 528 | * PARAMETERS: table_index - Table index |
1da177e4 | 529 | * |
8a335a23 | 530 | * RETURN: Status |
1da177e4 | 531 | * |
f3d2e786 | 532 | * DESCRIPTION: Delete all namespace objects created when this table was loaded. |
1da177e4 LT |
533 | * |
534 | ******************************************************************************/ | |
535 | ||
8a335a23 | 536 | acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index) |
1da177e4 | 537 | { |
f3d2e786 | 538 | acpi_owner_id owner_id; |
8a335a23 BM |
539 | acpi_status status; |
540 | ||
541 | ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner); | |
542 | ||
543 | status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
544 | if (ACPI_FAILURE(status)) { | |
545 | return_ACPI_STATUS(status); | |
546 | } | |
547 | ||
b9ee2043 | 548 | if (table_index >= acpi_gbl_root_table_list.current_table_count) { |
8a335a23 BM |
549 | |
550 | /* The table index does not exist */ | |
1da177e4 | 551 | |
f3d2e786 | 552 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
8a335a23 | 553 | return_ACPI_STATUS(AE_NOT_EXIST); |
1da177e4 LT |
554 | } |
555 | ||
8a335a23 BM |
556 | /* Get the owner ID for this table, used to delete namespace nodes */ |
557 | ||
558 | owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id; | |
f3d2e786 | 559 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
8a335a23 BM |
560 | |
561 | /* | |
562 | * Need to acquire the namespace writer lock to prevent interference | |
563 | * with any concurrent namespace walks. The interpreter must be | |
564 | * released during the deletion since the acquisition of the deletion | |
565 | * lock may block, and also since the execution of a namespace walk | |
566 | * must be allowed to use the interpreter. | |
567 | */ | |
e4c1ebfc | 568 | (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); |
8a335a23 BM |
569 | status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock); |
570 | ||
f3d2e786 | 571 | acpi_ns_delete_namespace_by_owner(owner_id); |
8a335a23 BM |
572 | if (ACPI_FAILURE(status)) { |
573 | return_ACPI_STATUS(status); | |
574 | } | |
575 | ||
576 | acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock); | |
577 | ||
578 | status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER); | |
579 | return_ACPI_STATUS(status); | |
f3d2e786 | 580 | } |
1da177e4 | 581 | |
f3d2e786 BM |
582 | /******************************************************************************* |
583 | * | |
584 | * FUNCTION: acpi_tb_allocate_owner_id | |
585 | * | |
586 | * PARAMETERS: table_index - Table index | |
587 | * | |
588 | * RETURN: Status | |
589 | * | |
590 | * DESCRIPTION: Allocates owner_id in table_desc | |
591 | * | |
592 | ******************************************************************************/ | |
1da177e4 | 593 | |
67a119f9 | 594 | acpi_status acpi_tb_allocate_owner_id(u32 table_index) |
f3d2e786 BM |
595 | { |
596 | acpi_status status = AE_BAD_PARAMETER; | |
1da177e4 | 597 | |
f3d2e786 | 598 | ACPI_FUNCTION_TRACE(tb_allocate_owner_id); |
1da177e4 | 599 | |
f3d2e786 | 600 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 601 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 BM |
602 | status = acpi_ut_allocate_owner_id |
603 | (&(acpi_gbl_root_table_list.tables[table_index].owner_id)); | |
1da177e4 LT |
604 | } |
605 | ||
4be44fcd | 606 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
f3d2e786 | 607 | return_ACPI_STATUS(status); |
1da177e4 LT |
608 | } |
609 | ||
1da177e4 LT |
610 | /******************************************************************************* |
611 | * | |
f3d2e786 | 612 | * FUNCTION: acpi_tb_release_owner_id |
1da177e4 | 613 | * |
f3d2e786 | 614 | * PARAMETERS: table_index - Table index |
1da177e4 | 615 | * |
f3d2e786 | 616 | * RETURN: Status |
1da177e4 | 617 | * |
f3d2e786 | 618 | * DESCRIPTION: Releases owner_id in table_desc |
1da177e4 LT |
619 | * |
620 | ******************************************************************************/ | |
621 | ||
67a119f9 | 622 | acpi_status acpi_tb_release_owner_id(u32 table_index) |
1da177e4 | 623 | { |
f3d2e786 | 624 | acpi_status status = AE_BAD_PARAMETER; |
1da177e4 | 625 | |
f3d2e786 | 626 | ACPI_FUNCTION_TRACE(tb_release_owner_id); |
1da177e4 | 627 | |
f3d2e786 | 628 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 629 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 BM |
630 | acpi_ut_release_owner_id(& |
631 | (acpi_gbl_root_table_list. | |
632 | tables[table_index].owner_id)); | |
633 | status = AE_OK; | |
1da177e4 LT |
634 | } |
635 | ||
f3d2e786 BM |
636 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
637 | return_ACPI_STATUS(status); | |
1da177e4 LT |
638 | } |
639 | ||
1da177e4 LT |
640 | /******************************************************************************* |
641 | * | |
f3d2e786 | 642 | * FUNCTION: acpi_tb_get_owner_id |
1da177e4 | 643 | * |
f3d2e786 BM |
644 | * PARAMETERS: table_index - Table index |
645 | * owner_id - Where the table owner_id is returned | |
1da177e4 | 646 | * |
f3d2e786 | 647 | * RETURN: Status |
1da177e4 | 648 | * |
f3d2e786 | 649 | * DESCRIPTION: returns owner_id for the ACPI table |
1da177e4 LT |
650 | * |
651 | ******************************************************************************/ | |
652 | ||
67a119f9 | 653 | acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id *owner_id) |
1da177e4 | 654 | { |
f3d2e786 | 655 | acpi_status status = AE_BAD_PARAMETER; |
1da177e4 | 656 | |
f3d2e786 | 657 | ACPI_FUNCTION_TRACE(tb_get_owner_id); |
1da177e4 | 658 | |
f3d2e786 | 659 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 660 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 BM |
661 | *owner_id = |
662 | acpi_gbl_root_table_list.tables[table_index].owner_id; | |
663 | status = AE_OK; | |
1da177e4 LT |
664 | } |
665 | ||
f3d2e786 BM |
666 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
667 | return_ACPI_STATUS(status); | |
668 | } | |
1da177e4 | 669 | |
f3d2e786 BM |
670 | /******************************************************************************* |
671 | * | |
672 | * FUNCTION: acpi_tb_is_table_loaded | |
673 | * | |
674 | * PARAMETERS: table_index - Table index | |
675 | * | |
676 | * RETURN: Table Loaded Flag | |
677 | * | |
678 | ******************************************************************************/ | |
1da177e4 | 679 | |
67a119f9 | 680 | u8 acpi_tb_is_table_loaded(u32 table_index) |
f3d2e786 BM |
681 | { |
682 | u8 is_loaded = FALSE; | |
1da177e4 | 683 | |
f3d2e786 | 684 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 685 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 | 686 | is_loaded = (u8) |
ec41f193 BM |
687 | (acpi_gbl_root_table_list.tables[table_index].flags & |
688 | ACPI_TABLE_IS_LOADED); | |
1da177e4 LT |
689 | } |
690 | ||
f3d2e786 BM |
691 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
692 | return (is_loaded); | |
693 | } | |
f6dd9221 | 694 | |
f3d2e786 BM |
695 | /******************************************************************************* |
696 | * | |
697 | * FUNCTION: acpi_tb_set_table_loaded_flag | |
698 | * | |
699 | * PARAMETERS: table_index - Table index | |
700 | * is_loaded - 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 | ******************************************************************************/ | |
1da177e4 | 707 | |
67a119f9 | 708 | void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded) |
f3d2e786 | 709 | { |
1da177e4 | 710 | |
f3d2e786 | 711 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 712 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 BM |
713 | if (is_loaded) { |
714 | acpi_gbl_root_table_list.tables[table_index].flags |= | |
c5fc42ac | 715 | ACPI_TABLE_IS_LOADED; |
f3d2e786 BM |
716 | } else { |
717 | acpi_gbl_root_table_list.tables[table_index].flags &= | |
c5fc42ac | 718 | ~ACPI_TABLE_IS_LOADED; |
f3d2e786 BM |
719 | } |
720 | } | |
1da177e4 | 721 | |
f3d2e786 | 722 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
1da177e4 | 723 | } |