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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: tbinstal - ACPI table installation and removal | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
fbb7a2dc | 8 | * Copyright (C) 2000 - 2014, 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 | } | |
5582982d | 78 | |
f3d2e786 BM |
79 | if (!table_desc->pointer) { |
80 | return_ACPI_STATUS(AE_NO_MEMORY); | |
1da177e4 | 81 | } |
f3d2e786 | 82 | } |
1da177e4 | 83 | |
94d4be67 | 84 | /* Always calculate checksum, ignore bad checksum if requested */ |
52fc0b02 | 85 | |
94d4be67 LZ |
86 | status = |
87 | acpi_tb_verify_checksum(table_desc->pointer, table_desc->length); | |
1da177e4 | 88 | |
c5fc42ac | 89 | return_ACPI_STATUS(status); |
1da177e4 LT |
90 | } |
91 | ||
1da177e4 LT |
92 | /******************************************************************************* |
93 | * | |
f3d2e786 | 94 | * FUNCTION: acpi_tb_add_table |
1da177e4 | 95 | * |
428f2112 | 96 | * PARAMETERS: table_desc - Table descriptor |
f3d2e786 | 97 | * table_index - Where the table index is returned |
1da177e4 LT |
98 | * |
99 | * RETURN: Status | |
100 | * | |
d3ccaff8 BM |
101 | * DESCRIPTION: This function is called to add an ACPI table. It is used to |
102 | * dynamically load tables via the Load and load_table AML | |
103 | * operators. | |
1da177e4 LT |
104 | * |
105 | ******************************************************************************/ | |
106 | ||
f3d2e786 | 107 | acpi_status |
67a119f9 | 108 | acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index) |
1da177e4 | 109 | { |
67a119f9 | 110 | u32 i; |
f3d2e786 | 111 | acpi_status status = AE_OK; |
1da177e4 | 112 | |
f3d2e786 | 113 | ACPI_FUNCTION_TRACE(tb_add_table); |
1da177e4 | 114 | |
428f2112 AS |
115 | if (!table_desc->pointer) { |
116 | status = acpi_tb_verify_table(table_desc); | |
117 | if (ACPI_FAILURE(status) || !table_desc->pointer) { | |
118 | return_ACPI_STATUS(status); | |
119 | } | |
120 | } | |
121 | ||
bc45b1d3 | 122 | /* |
c8cefe30 BM |
123 | * Validate the incoming table signature. |
124 | * | |
125 | * 1) Originally, we checked the table signature for "SSDT" or "PSDT". | |
126 | * 2) We added support for OEMx tables, signature "OEM". | |
127 | * 3) Valid tables were encountered with a null signature, so we just | |
128 | * gave up on validating the signature, (05/2008). | |
129 | * 4) We encountered non-AML tables such as the MADT, which caused | |
130 | * interpreter errors and kernel faults. So now, we once again allow | |
131 | * only "SSDT", "OEMx", and now, also a null signature. (05/2011). | |
bc45b1d3 | 132 | */ |
c8cefe30 BM |
133 | if ((table_desc->pointer->signature[0] != 0x00) && |
134 | (!ACPI_COMPARE_NAME(table_desc->pointer->signature, ACPI_SIG_SSDT)) | |
135 | && (ACPI_STRNCMP(table_desc->pointer->signature, "OEM", 3))) { | |
3b3ea775 BM |
136 | ACPI_BIOS_ERROR((AE_INFO, |
137 | "Table has invalid signature [%4.4s] (0x%8.8X), " | |
138 | "must be SSDT or OEMx", | |
de8e7db7 | 139 | acpi_ut_valid_acpi_name(table_desc->pointer-> |
3b3ea775 BM |
140 | signature) ? |
141 | table_desc->pointer->signature : "????", | |
142 | *(u32 *)table_desc->pointer->signature)); | |
c8cefe30 BM |
143 | |
144 | return_ACPI_STATUS(AE_BAD_SIGNATURE); | |
145 | } | |
428f2112 | 146 | |
f3d2e786 | 147 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
1da177e4 | 148 | |
f3d2e786 BM |
149 | /* Check if table is already registered */ |
150 | ||
b9ee2043 | 151 | for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) { |
f3d2e786 BM |
152 | if (!acpi_gbl_root_table_list.tables[i].pointer) { |
153 | status = | |
154 | acpi_tb_verify_table(&acpi_gbl_root_table_list. | |
155 | tables[i]); | |
156 | if (ACPI_FAILURE(status) | |
157 | || !acpi_gbl_root_table_list.tables[i].pointer) { | |
158 | continue; | |
159 | } | |
160 | } | |
161 | ||
a6f30539 BM |
162 | /* |
163 | * Check for a table match on the entire table length, | |
164 | * not just the header. | |
165 | */ | |
166 | if (table_desc->length != | |
167 | acpi_gbl_root_table_list.tables[i].length) { | |
168 | continue; | |
169 | } | |
e56f5617 | 170 | |
428f2112 AS |
171 | if (ACPI_MEMCMP(table_desc->pointer, |
172 | acpi_gbl_root_table_list.tables[i].pointer, | |
a6f30539 | 173 | acpi_gbl_root_table_list.tables[i].length)) { |
f3d2e786 BM |
174 | continue; |
175 | } | |
176 | ||
e56f5617 BM |
177 | /* |
178 | * Note: the current mechanism does not unregister a table if it is | |
179 | * dynamically unloaded. The related namespace entries are deleted, | |
180 | * but the table remains in the root table list. | |
181 | * | |
182 | * The assumption here is that the number of different tables that | |
183 | * will be loaded is actually small, and there is minimal overhead | |
184 | * in just keeping the table in case it is needed again. | |
185 | * | |
186 | * If this assumption changes in the future (perhaps on large | |
187 | * machines with many table load/unload operations), tables will | |
188 | * need to be unregistered when they are unloaded, and slots in the | |
189 | * root table list should be reused when empty. | |
190 | */ | |
191 | ||
192 | /* | |
193 | * Table is already registered. | |
194 | * We can delete the table that was passed as a parameter. | |
195 | */ | |
428f2112 | 196 | acpi_tb_delete_table(table_desc); |
f3d2e786 | 197 | *table_index = i; |
e56f5617 BM |
198 | |
199 | if (acpi_gbl_root_table_list.tables[i]. | |
200 | flags & ACPI_TABLE_IS_LOADED) { | |
201 | ||
202 | /* Table is still loaded, this is an error */ | |
203 | ||
204 | status = AE_ALREADY_EXISTS; | |
205 | goto release; | |
206 | } else { | |
207 | /* Table was unloaded, allow it to be reloaded */ | |
208 | ||
209 | table_desc->pointer = | |
210 | acpi_gbl_root_table_list.tables[i].pointer; | |
211 | table_desc->address = | |
212 | acpi_gbl_root_table_list.tables[i].address; | |
213 | status = AE_OK; | |
214 | goto print_header; | |
215 | } | |
1da177e4 LT |
216 | } |
217 | ||
d3ccaff8 BM |
218 | /* |
219 | * ACPI Table Override: | |
220 | * Allow the host to override dynamically loaded tables. | |
f7b004a1 BM |
221 | * NOTE: the table is fully mapped at this point, and the mapping will |
222 | * be deleted by tb_table_override if the table is actually overridden. | |
d3ccaff8 | 223 | */ |
f7b004a1 | 224 | (void)acpi_tb_table_override(table_desc->pointer, table_desc); |
d3ccaff8 | 225 | |
e56f5617 BM |
226 | /* Add the table to the global root table list */ |
227 | ||
428f2112 AS |
228 | status = acpi_tb_store_table(table_desc->address, table_desc->pointer, |
229 | table_desc->length, table_desc->flags, | |
230 | table_index); | |
4be44fcd | 231 | if (ACPI_FAILURE(status)) { |
f3d2e786 | 232 | goto release; |
0c9938cc RM |
233 | } |
234 | ||
10622bf8 | 235 | print_header: |
428f2112 | 236 | acpi_tb_print_table_header(table_desc->address, table_desc->pointer); |
1da177e4 | 237 | |
10622bf8 | 238 | release: |
4be44fcd LB |
239 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
240 | return_ACPI_STATUS(status); | |
1da177e4 LT |
241 | } |
242 | ||
f7b004a1 BM |
243 | /******************************************************************************* |
244 | * | |
245 | * FUNCTION: acpi_tb_table_override | |
246 | * | |
247 | * PARAMETERS: table_header - Header for the original table | |
248 | * table_desc - Table descriptor initialized for the | |
249 | * original table. May or may not be mapped. | |
250 | * | |
251 | * RETURN: Pointer to the entire new table. NULL if table not overridden. | |
252 | * If overridden, installs the new table within the input table | |
253 | * descriptor. | |
254 | * | |
255 | * DESCRIPTION: Attempt table override by calling the OSL override functions. | |
256 | * Note: If the table is overridden, then the entire new table | |
257 | * is mapped and returned by this function. | |
258 | * | |
259 | ******************************************************************************/ | |
260 | ||
261 | struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header | |
262 | *table_header, | |
263 | struct acpi_table_desc | |
264 | *table_desc) | |
265 | { | |
266 | acpi_status status; | |
267 | struct acpi_table_header *new_table = NULL; | |
268 | acpi_physical_address new_address = 0; | |
269 | u32 new_table_length = 0; | |
270 | u8 new_flags; | |
271 | char *override_type; | |
272 | ||
273 | /* (1) Attempt logical override (returns a logical address) */ | |
274 | ||
275 | status = acpi_os_table_override(table_header, &new_table); | |
276 | if (ACPI_SUCCESS(status) && new_table) { | |
277 | new_address = ACPI_PTR_TO_PHYSADDR(new_table); | |
278 | new_table_length = new_table->length; | |
279 | new_flags = ACPI_TABLE_ORIGIN_OVERRIDE; | |
280 | override_type = "Logical"; | |
281 | goto finish_override; | |
282 | } | |
283 | ||
284 | /* (2) Attempt physical override (returns a physical address) */ | |
285 | ||
286 | status = acpi_os_physical_table_override(table_header, | |
287 | &new_address, | |
288 | &new_table_length); | |
289 | if (ACPI_SUCCESS(status) && new_address && new_table_length) { | |
290 | ||
291 | /* Map the entire new table */ | |
292 | ||
293 | new_table = acpi_os_map_memory(new_address, new_table_length); | |
294 | if (!new_table) { | |
295 | ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, | |
2e19f8d0 BM |
296 | "%4.4s " ACPI_PRINTF_UINT |
297 | " Attempted physical table override failed", | |
f7b004a1 | 298 | table_header->signature, |
2e19f8d0 BM |
299 | ACPI_FORMAT_TO_UINT(table_desc-> |
300 | address))); | |
f7b004a1 BM |
301 | return (NULL); |
302 | } | |
303 | ||
304 | override_type = "Physical"; | |
305 | new_flags = ACPI_TABLE_ORIGIN_MAPPED; | |
306 | goto finish_override; | |
307 | } | |
308 | ||
309 | return (NULL); /* There was no override */ | |
310 | ||
10622bf8 | 311 | finish_override: |
f7b004a1 | 312 | |
2e19f8d0 BM |
313 | ACPI_INFO((AE_INFO, "%4.4s " ACPI_PRINTF_UINT |
314 | " %s table override, new table: " ACPI_PRINTF_UINT, | |
f7b004a1 | 315 | table_header->signature, |
2e19f8d0 BM |
316 | ACPI_FORMAT_TO_UINT(table_desc->address), |
317 | override_type, ACPI_FORMAT_TO_UINT(new_table))); | |
f7b004a1 BM |
318 | |
319 | /* We can now unmap/delete the original table (if fully mapped) */ | |
320 | ||
321 | acpi_tb_delete_table(table_desc); | |
322 | ||
323 | /* Setup descriptor for the new table */ | |
324 | ||
325 | table_desc->address = new_address; | |
326 | table_desc->pointer = new_table; | |
327 | table_desc->length = new_table_length; | |
328 | table_desc->flags = new_flags; | |
329 | ||
330 | return (new_table); | |
331 | } | |
332 | ||
1da177e4 LT |
333 | /******************************************************************************* |
334 | * | |
f3d2e786 | 335 | * FUNCTION: acpi_tb_resize_root_table_list |
1da177e4 | 336 | * |
f3d2e786 | 337 | * PARAMETERS: None |
1da177e4 LT |
338 | * |
339 | * RETURN: Status | |
340 | * | |
f3d2e786 | 341 | * DESCRIPTION: Expand the size of global table array |
1da177e4 LT |
342 | * |
343 | ******************************************************************************/ | |
344 | ||
f3d2e786 | 345 | acpi_status acpi_tb_resize_root_table_list(void) |
1da177e4 | 346 | { |
f3d2e786 | 347 | struct acpi_table_desc *tables; |
2bc198c1 | 348 | u32 table_count; |
1da177e4 | 349 | |
f3d2e786 | 350 | ACPI_FUNCTION_TRACE(tb_resize_root_table_list); |
1da177e4 | 351 | |
f3d2e786 | 352 | /* allow_resize flag is a parameter to acpi_initialize_tables */ |
1da177e4 | 353 | |
c5fc42ac | 354 | if (!(acpi_gbl_root_table_list.flags & ACPI_ROOT_ALLOW_RESIZE)) { |
f3d2e786 BM |
355 | ACPI_ERROR((AE_INFO, |
356 | "Resize of Root Table Array is not allowed")); | |
357 | return_ACPI_STATUS(AE_SUPPORT); | |
1da177e4 LT |
358 | } |
359 | ||
f3d2e786 BM |
360 | /* Increase the Table Array size */ |
361 | ||
2bc198c1 LZ |
362 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { |
363 | table_count = acpi_gbl_root_table_list.max_table_count; | |
364 | } else { | |
365 | table_count = acpi_gbl_root_table_list.current_table_count; | |
366 | } | |
367 | ||
368 | tables = ACPI_ALLOCATE_ZEROED(((acpi_size) table_count + | |
ec41f193 BM |
369 | ACPI_ROOT_TABLE_SIZE_INCREMENT) * |
370 | sizeof(struct acpi_table_desc)); | |
f3d2e786 BM |
371 | if (!tables) { |
372 | ACPI_ERROR((AE_INFO, | |
373 | "Could not allocate new root table array")); | |
374 | return_ACPI_STATUS(AE_NO_MEMORY); | |
1da177e4 LT |
375 | } |
376 | ||
f3d2e786 BM |
377 | /* Copy and free the previous table array */ |
378 | ||
379 | if (acpi_gbl_root_table_list.tables) { | |
380 | ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, | |
2bc198c1 LZ |
381 | (acpi_size) table_count * |
382 | sizeof(struct acpi_table_desc)); | |
f3d2e786 | 383 | |
c5fc42ac | 384 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { |
f3d2e786 BM |
385 | ACPI_FREE(acpi_gbl_root_table_list.tables); |
386 | } | |
1da177e4 LT |
387 | } |
388 | ||
f3d2e786 | 389 | acpi_gbl_root_table_list.tables = tables; |
2bc198c1 LZ |
390 | acpi_gbl_root_table_list.max_table_count = |
391 | table_count + ACPI_ROOT_TABLE_SIZE_INCREMENT; | |
392 | acpi_gbl_root_table_list.flags |= ACPI_ROOT_ORIGIN_ALLOCATED; | |
1da177e4 | 393 | |
f3d2e786 | 394 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
395 | } |
396 | ||
1da177e4 LT |
397 | /******************************************************************************* |
398 | * | |
f3d2e786 | 399 | * FUNCTION: acpi_tb_store_table |
1da177e4 | 400 | * |
ba494bee BM |
401 | * PARAMETERS: address - Table address |
402 | * table - Table header | |
403 | * length - Table length | |
404 | * flags - flags | |
1da177e4 | 405 | * |
f3d2e786 | 406 | * RETURN: Status and table index. |
1da177e4 | 407 | * |
f3d2e786 | 408 | * DESCRIPTION: Add an ACPI table to the global table list |
1da177e4 LT |
409 | * |
410 | ******************************************************************************/ | |
411 | ||
412 | acpi_status | |
f3d2e786 BM |
413 | acpi_tb_store_table(acpi_physical_address address, |
414 | struct acpi_table_header *table, | |
67a119f9 | 415 | u32 length, u8 flags, u32 *table_index) |
1da177e4 | 416 | { |
b9ee2043 BM |
417 | acpi_status status; |
418 | struct acpi_table_desc *new_table; | |
1da177e4 | 419 | |
f3d2e786 | 420 | /* Ensure that there is room for the table in the Root Table List */ |
f9f4601f | 421 | |
b9ee2043 BM |
422 | if (acpi_gbl_root_table_list.current_table_count >= |
423 | acpi_gbl_root_table_list.max_table_count) { | |
f3d2e786 BM |
424 | status = acpi_tb_resize_root_table_list(); |
425 | if (ACPI_FAILURE(status)) { | |
426 | return (status); | |
427 | } | |
f9f4601f RM |
428 | } |
429 | ||
b9ee2043 BM |
430 | new_table = |
431 | &acpi_gbl_root_table_list.tables[acpi_gbl_root_table_list. | |
432 | current_table_count]; | |
433 | ||
f3d2e786 BM |
434 | /* Initialize added table */ |
435 | ||
b9ee2043 BM |
436 | new_table->address = address; |
437 | new_table->pointer = table; | |
438 | new_table->length = length; | |
439 | new_table->owner_id = 0; | |
440 | new_table->flags = flags; | |
441 | ||
442 | ACPI_MOVE_32_TO_32(&new_table->signature, table->signature); | |
443 | ||
444 | *table_index = acpi_gbl_root_table_list.current_table_count; | |
445 | acpi_gbl_root_table_list.current_table_count++; | |
446 | return (AE_OK); | |
f3d2e786 | 447 | } |
1da177e4 | 448 | |
f3d2e786 BM |
449 | /******************************************************************************* |
450 | * | |
451 | * FUNCTION: acpi_tb_delete_table | |
452 | * | |
453 | * PARAMETERS: table_index - Table index | |
454 | * | |
455 | * RETURN: None | |
456 | * | |
457 | * DESCRIPTION: Delete one internal ACPI table | |
458 | * | |
459 | ******************************************************************************/ | |
1da177e4 | 460 | |
428f2112 | 461 | void acpi_tb_delete_table(struct acpi_table_desc *table_desc) |
f3d2e786 | 462 | { |
5582982d | 463 | |
f3d2e786 | 464 | /* Table must be mapped or allocated */ |
5582982d | 465 | |
f3d2e786 BM |
466 | if (!table_desc->pointer) { |
467 | return; | |
1da177e4 | 468 | } |
5582982d | 469 | |
428f2112 AS |
470 | switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) { |
471 | case ACPI_TABLE_ORIGIN_MAPPED: | |
1d1ea1b7 | 472 | |
428f2112 AS |
473 | acpi_os_unmap_memory(table_desc->pointer, table_desc->length); |
474 | break; | |
1d1ea1b7 | 475 | |
428f2112 | 476 | case ACPI_TABLE_ORIGIN_ALLOCATED: |
1d1ea1b7 | 477 | |
f3d2e786 | 478 | ACPI_FREE(table_desc->pointer); |
428f2112 | 479 | break; |
f7b004a1 BM |
480 | |
481 | /* Not mapped or allocated, there is nothing we can do */ | |
482 | ||
483 | default: | |
1d1ea1b7 | 484 | |
f7b004a1 | 485 | return; |
1da177e4 LT |
486 | } |
487 | ||
f3d2e786 | 488 | table_desc->pointer = NULL; |
1da177e4 LT |
489 | } |
490 | ||
1da177e4 LT |
491 | /******************************************************************************* |
492 | * | |
f3d2e786 | 493 | * FUNCTION: acpi_tb_terminate |
1da177e4 | 494 | * |
f3d2e786 | 495 | * PARAMETERS: None |
1da177e4 | 496 | * |
f3d2e786 | 497 | * RETURN: None |
1da177e4 LT |
498 | * |
499 | * DESCRIPTION: Delete all internal ACPI tables | |
500 | * | |
501 | ******************************************************************************/ | |
502 | ||
f3d2e786 | 503 | void acpi_tb_terminate(void) |
1da177e4 | 504 | { |
67a119f9 | 505 | u32 i; |
f3d2e786 BM |
506 | |
507 | ACPI_FUNCTION_TRACE(tb_terminate); | |
508 | ||
509 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
510 | ||
511 | /* Delete the individual tables */ | |
512 | ||
b9ee2043 | 513 | for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) { |
428f2112 | 514 | acpi_tb_delete_table(&acpi_gbl_root_table_list.tables[i]); |
f3d2e786 | 515 | } |
1da177e4 LT |
516 | |
517 | /* | |
f3d2e786 BM |
518 | * Delete the root table array if allocated locally. Array cannot be |
519 | * mapped, so we don't need to check for that flag. | |
1da177e4 | 520 | */ |
c5fc42ac | 521 | if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) { |
f3d2e786 | 522 | ACPI_FREE(acpi_gbl_root_table_list.tables); |
1da177e4 | 523 | } |
f3d2e786 BM |
524 | |
525 | acpi_gbl_root_table_list.tables = NULL; | |
526 | acpi_gbl_root_table_list.flags = 0; | |
b9ee2043 | 527 | acpi_gbl_root_table_list.current_table_count = 0; |
f3d2e786 BM |
528 | |
529 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ACPI Tables freed\n")); | |
530 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
68aafc35 BM |
531 | |
532 | return_VOID; | |
1da177e4 LT |
533 | } |
534 | ||
1da177e4 LT |
535 | /******************************************************************************* |
536 | * | |
f3d2e786 | 537 | * FUNCTION: acpi_tb_delete_namespace_by_owner |
1da177e4 | 538 | * |
f3d2e786 | 539 | * PARAMETERS: table_index - Table index |
1da177e4 | 540 | * |
8a335a23 | 541 | * RETURN: Status |
1da177e4 | 542 | * |
f3d2e786 | 543 | * DESCRIPTION: Delete all namespace objects created when this table was loaded. |
1da177e4 LT |
544 | * |
545 | ******************************************************************************/ | |
546 | ||
8a335a23 | 547 | acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index) |
1da177e4 | 548 | { |
f3d2e786 | 549 | acpi_owner_id owner_id; |
8a335a23 BM |
550 | acpi_status status; |
551 | ||
552 | ACPI_FUNCTION_TRACE(tb_delete_namespace_by_owner); | |
553 | ||
554 | status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); | |
555 | if (ACPI_FAILURE(status)) { | |
556 | return_ACPI_STATUS(status); | |
557 | } | |
558 | ||
b9ee2043 | 559 | if (table_index >= acpi_gbl_root_table_list.current_table_count) { |
8a335a23 BM |
560 | |
561 | /* The table index does not exist */ | |
1da177e4 | 562 | |
f3d2e786 | 563 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
8a335a23 | 564 | return_ACPI_STATUS(AE_NOT_EXIST); |
1da177e4 LT |
565 | } |
566 | ||
8a335a23 BM |
567 | /* Get the owner ID for this table, used to delete namespace nodes */ |
568 | ||
569 | owner_id = acpi_gbl_root_table_list.tables[table_index].owner_id; | |
f3d2e786 | 570 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
8a335a23 BM |
571 | |
572 | /* | |
573 | * Need to acquire the namespace writer lock to prevent interference | |
574 | * with any concurrent namespace walks. The interpreter must be | |
575 | * released during the deletion since the acquisition of the deletion | |
576 | * lock may block, and also since the execution of a namespace walk | |
577 | * must be allowed to use the interpreter. | |
578 | */ | |
e4c1ebfc | 579 | (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); |
8a335a23 BM |
580 | status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock); |
581 | ||
f3d2e786 | 582 | acpi_ns_delete_namespace_by_owner(owner_id); |
8a335a23 BM |
583 | if (ACPI_FAILURE(status)) { |
584 | return_ACPI_STATUS(status); | |
585 | } | |
586 | ||
587 | acpi_ut_release_write_lock(&acpi_gbl_namespace_rw_lock); | |
588 | ||
589 | status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER); | |
590 | return_ACPI_STATUS(status); | |
f3d2e786 | 591 | } |
1da177e4 | 592 | |
f3d2e786 BM |
593 | /******************************************************************************* |
594 | * | |
595 | * FUNCTION: acpi_tb_allocate_owner_id | |
596 | * | |
597 | * PARAMETERS: table_index - Table index | |
598 | * | |
599 | * RETURN: Status | |
600 | * | |
601 | * DESCRIPTION: Allocates owner_id in table_desc | |
602 | * | |
603 | ******************************************************************************/ | |
1da177e4 | 604 | |
67a119f9 | 605 | acpi_status acpi_tb_allocate_owner_id(u32 table_index) |
f3d2e786 BM |
606 | { |
607 | acpi_status status = AE_BAD_PARAMETER; | |
1da177e4 | 608 | |
f3d2e786 | 609 | ACPI_FUNCTION_TRACE(tb_allocate_owner_id); |
1da177e4 | 610 | |
f3d2e786 | 611 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 612 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 BM |
613 | status = acpi_ut_allocate_owner_id |
614 | (&(acpi_gbl_root_table_list.tables[table_index].owner_id)); | |
1da177e4 LT |
615 | } |
616 | ||
4be44fcd | 617 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
f3d2e786 | 618 | return_ACPI_STATUS(status); |
1da177e4 LT |
619 | } |
620 | ||
1da177e4 LT |
621 | /******************************************************************************* |
622 | * | |
f3d2e786 | 623 | * FUNCTION: acpi_tb_release_owner_id |
1da177e4 | 624 | * |
f3d2e786 | 625 | * PARAMETERS: table_index - Table index |
1da177e4 | 626 | * |
f3d2e786 | 627 | * RETURN: Status |
1da177e4 | 628 | * |
f3d2e786 | 629 | * DESCRIPTION: Releases owner_id in table_desc |
1da177e4 LT |
630 | * |
631 | ******************************************************************************/ | |
632 | ||
67a119f9 | 633 | acpi_status acpi_tb_release_owner_id(u32 table_index) |
1da177e4 | 634 | { |
f3d2e786 | 635 | acpi_status status = AE_BAD_PARAMETER; |
1da177e4 | 636 | |
f3d2e786 | 637 | ACPI_FUNCTION_TRACE(tb_release_owner_id); |
1da177e4 | 638 | |
f3d2e786 | 639 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 640 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 BM |
641 | acpi_ut_release_owner_id(& |
642 | (acpi_gbl_root_table_list. | |
643 | tables[table_index].owner_id)); | |
644 | status = AE_OK; | |
1da177e4 LT |
645 | } |
646 | ||
f3d2e786 BM |
647 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
648 | return_ACPI_STATUS(status); | |
1da177e4 LT |
649 | } |
650 | ||
1da177e4 LT |
651 | /******************************************************************************* |
652 | * | |
f3d2e786 | 653 | * FUNCTION: acpi_tb_get_owner_id |
1da177e4 | 654 | * |
f3d2e786 BM |
655 | * PARAMETERS: table_index - Table index |
656 | * owner_id - Where the table owner_id is returned | |
1da177e4 | 657 | * |
f3d2e786 | 658 | * RETURN: Status |
1da177e4 | 659 | * |
f3d2e786 | 660 | * DESCRIPTION: returns owner_id for the ACPI table |
1da177e4 LT |
661 | * |
662 | ******************************************************************************/ | |
663 | ||
5582982d | 664 | acpi_status acpi_tb_get_owner_id(u32 table_index, acpi_owner_id * owner_id) |
1da177e4 | 665 | { |
f3d2e786 | 666 | acpi_status status = AE_BAD_PARAMETER; |
1da177e4 | 667 | |
f3d2e786 | 668 | ACPI_FUNCTION_TRACE(tb_get_owner_id); |
1da177e4 | 669 | |
f3d2e786 | 670 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 671 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 BM |
672 | *owner_id = |
673 | acpi_gbl_root_table_list.tables[table_index].owner_id; | |
674 | status = AE_OK; | |
1da177e4 LT |
675 | } |
676 | ||
f3d2e786 BM |
677 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
678 | return_ACPI_STATUS(status); | |
679 | } | |
1da177e4 | 680 | |
f3d2e786 BM |
681 | /******************************************************************************* |
682 | * | |
683 | * FUNCTION: acpi_tb_is_table_loaded | |
684 | * | |
685 | * PARAMETERS: table_index - Table index | |
686 | * | |
687 | * RETURN: Table Loaded Flag | |
688 | * | |
689 | ******************************************************************************/ | |
1da177e4 | 690 | |
67a119f9 | 691 | u8 acpi_tb_is_table_loaded(u32 table_index) |
f3d2e786 BM |
692 | { |
693 | u8 is_loaded = FALSE; | |
1da177e4 | 694 | |
f3d2e786 | 695 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 696 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 | 697 | is_loaded = (u8) |
ec41f193 BM |
698 | (acpi_gbl_root_table_list.tables[table_index].flags & |
699 | ACPI_TABLE_IS_LOADED); | |
1da177e4 LT |
700 | } |
701 | ||
f3d2e786 BM |
702 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
703 | return (is_loaded); | |
704 | } | |
f6dd9221 | 705 | |
f3d2e786 BM |
706 | /******************************************************************************* |
707 | * | |
708 | * FUNCTION: acpi_tb_set_table_loaded_flag | |
709 | * | |
710 | * PARAMETERS: table_index - Table index | |
711 | * is_loaded - TRUE if table is loaded, FALSE otherwise | |
712 | * | |
713 | * RETURN: None | |
714 | * | |
715 | * DESCRIPTION: Sets the table loaded flag to either TRUE or FALSE. | |
716 | * | |
717 | ******************************************************************************/ | |
1da177e4 | 718 | |
67a119f9 | 719 | void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded) |
f3d2e786 | 720 | { |
1da177e4 | 721 | |
f3d2e786 | 722 | (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
b9ee2043 | 723 | if (table_index < acpi_gbl_root_table_list.current_table_count) { |
f3d2e786 BM |
724 | if (is_loaded) { |
725 | acpi_gbl_root_table_list.tables[table_index].flags |= | |
c5fc42ac | 726 | ACPI_TABLE_IS_LOADED; |
f3d2e786 BM |
727 | } else { |
728 | acpi_gbl_root_table_list.tables[table_index].flags &= | |
c5fc42ac | 729 | ~ACPI_TABLE_IS_LOADED; |
f3d2e786 BM |
730 | } |
731 | } | |
1da177e4 | 732 | |
f3d2e786 | 733 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
1da177e4 | 734 | } |