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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: tbinstal - ACPI table installation and removal | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
82a80941 | 8 | * Copyright (C) 2000 - 2015, 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 | 45 | #include "accommon.h" |
e2f7a777 | 46 | #include "actables.h" |
1da177e4 | 47 | |
1da177e4 | 48 | #define _COMPONENT ACPI_TABLES |
4be44fcd | 49 | ACPI_MODULE_NAME("tbinstal") |
1da177e4 | 50 | |
86dfc6f3 | 51 | /* Local prototypes */ |
86dfc6f3 | 52 | static u8 |
c418ce19 | 53 | acpi_tb_compare_tables(struct acpi_table_desc *table_desc, u32 table_index); |
1da177e4 | 54 | |
7f9fc99c LZ |
55 | /******************************************************************************* |
56 | * | |
c418ce19 | 57 | * FUNCTION: acpi_tb_compare_tables |
7f9fc99c | 58 | * |
c418ce19 BM |
59 | * PARAMETERS: table_desc - Table 1 descriptor to be compared |
60 | * table_index - Index of table 2 to be compared | |
7f9fc99c | 61 | * |
c418ce19 | 62 | * RETURN: TRUE if both tables are identical. |
7f9fc99c | 63 | * |
c418ce19 BM |
64 | * DESCRIPTION: This function compares a table with another table that has |
65 | * already been installed in the root table list. | |
7f9fc99c LZ |
66 | * |
67 | ******************************************************************************/ | |
68 | ||
c418ce19 BM |
69 | static u8 |
70 | acpi_tb_compare_tables(struct acpi_table_desc *table_desc, u32 table_index) | |
1da177e4 | 71 | { |
f3d2e786 | 72 | acpi_status status = AE_OK; |
c418ce19 BM |
73 | u8 is_identical; |
74 | struct acpi_table_header *table; | |
75 | u32 table_length; | |
76 | u8 table_flags; | |
1da177e4 | 77 | |
86dfc6f3 | 78 | status = |
c418ce19 BM |
79 | acpi_tb_acquire_table(&acpi_gbl_root_table_list.tables[table_index], |
80 | &table, &table_length, &table_flags); | |
86dfc6f3 | 81 | if (ACPI_FAILURE(status)) { |
c418ce19 | 82 | return (FALSE); |
86dfc6f3 | 83 | } |
f3d2e786 | 84 | |
86dfc6f3 | 85 | /* |
c418ce19 BM |
86 | * Check for a table match on the entire table length, |
87 | * not just the header. | |
86dfc6f3 | 88 | */ |
c418ce19 BM |
89 | is_identical = (u8)((table_desc->length != table_length || |
90 | ACPI_MEMCMP(table_desc->pointer, table, | |
91 | table_length)) ? FALSE : TRUE); | |
e56f5617 | 92 | |
c418ce19 | 93 | /* Release the acquired table */ |
ed6f1d44 | 94 | |
c418ce19 BM |
95 | acpi_tb_release_table(table, table_length, table_flags); |
96 | return (is_identical); | |
86dfc6f3 | 97 | } |
e56f5617 | 98 | |
86dfc6f3 LZ |
99 | /******************************************************************************* |
100 | * | |
ed6f1d44 | 101 | * FUNCTION: acpi_tb_install_table_with_override |
86dfc6f3 LZ |
102 | * |
103 | * PARAMETERS: table_index - Index into root table array | |
104 | * new_table_desc - New table descriptor to install | |
caf4a15c | 105 | * override - Whether override should be performed |
86dfc6f3 LZ |
106 | * |
107 | * RETURN: None | |
108 | * | |
109 | * DESCRIPTION: Install an ACPI table into the global data structure. The | |
110 | * table override mechanism is called to allow the host | |
111 | * OS to replace any table before it is installed in the root | |
112 | * table array. | |
113 | * | |
114 | ******************************************************************************/ | |
115 | ||
116 | void | |
ed6f1d44 BM |
117 | acpi_tb_install_table_with_override(u32 table_index, |
118 | struct acpi_table_desc *new_table_desc, | |
119 | u8 override) | |
86dfc6f3 | 120 | { |
ed6f1d44 | 121 | |
86dfc6f3 LZ |
122 | if (table_index >= acpi_gbl_root_table_list.current_table_count) { |
123 | return; | |
1da177e4 LT |
124 | } |
125 | ||
d3ccaff8 BM |
126 | /* |
127 | * ACPI Table Override: | |
86dfc6f3 LZ |
128 | * |
129 | * Before we install the table, let the host OS override it with a new | |
130 | * one if desired. Any table within the RSDT/XSDT can be replaced, | |
131 | * including the DSDT which is pointed to by the FADT. | |
d3ccaff8 | 132 | */ |
caf4a15c LZ |
133 | if (override) { |
134 | acpi_tb_override_table(new_table_desc); | |
135 | } | |
7f9fc99c | 136 | |
ed6f1d44 BM |
137 | acpi_tb_init_table_descriptor(&acpi_gbl_root_table_list. |
138 | tables[table_index], | |
139 | new_table_desc->address, | |
140 | new_table_desc->flags, | |
141 | new_table_desc->pointer); | |
7f9fc99c | 142 | |
86dfc6f3 LZ |
143 | acpi_tb_print_table_header(new_table_desc->address, |
144 | new_table_desc->pointer); | |
145 | ||
146 | /* Set the global integer width (based upon revision of the DSDT) */ | |
147 | ||
148 | if (table_index == ACPI_TABLE_INDEX_DSDT) { | |
149 | acpi_ut_set_integer_width(new_table_desc->pointer->revision); | |
150 | } | |
151 | } | |
152 | ||
153 | /******************************************************************************* | |
154 | * | |
155 | * FUNCTION: acpi_tb_install_fixed_table | |
156 | * | |
157 | * PARAMETERS: address - Physical address of DSDT or FACS | |
158 | * signature - Table signature, NULL if no need to | |
159 | * match | |
160 | * table_index - Index into root table array | |
161 | * | |
162 | * RETURN: Status | |
163 | * | |
164 | * DESCRIPTION: Install a fixed ACPI table (DSDT/FACS) into the global data | |
165 | * structure. | |
166 | * | |
167 | ******************************************************************************/ | |
168 | ||
169 | acpi_status | |
170 | acpi_tb_install_fixed_table(acpi_physical_address address, | |
171 | char *signature, u32 table_index) | |
172 | { | |
173 | struct acpi_table_desc new_table_desc; | |
174 | acpi_status status; | |
175 | ||
176 | ACPI_FUNCTION_TRACE(tb_install_fixed_table); | |
177 | ||
178 | if (!address) { | |
179 | ACPI_ERROR((AE_INFO, | |
180 | "Null physical address for ACPI table [%s]", | |
181 | signature)); | |
182 | return (AE_NO_MEMORY); | |
183 | } | |
184 | ||
185 | /* Fill a table descriptor for validation */ | |
186 | ||
ed6f1d44 BM |
187 | status = acpi_tb_acquire_temp_table(&new_table_desc, address, |
188 | ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL); | |
86dfc6f3 LZ |
189 | if (ACPI_FAILURE(status)) { |
190 | ACPI_ERROR((AE_INFO, "Could not acquire table length at %p", | |
191 | ACPI_CAST_PTR(void, address))); | |
192 | return_ACPI_STATUS(status); | |
193 | } | |
194 | ||
195 | /* Validate and verify a table before installation */ | |
196 | ||
47d68c7f | 197 | status = acpi_tb_verify_temp_table(&new_table_desc, signature); |
86dfc6f3 LZ |
198 | if (ACPI_FAILURE(status)) { |
199 | goto release_and_exit; | |
200 | } | |
201 | ||
ed6f1d44 | 202 | acpi_tb_install_table_with_override(table_index, &new_table_desc, TRUE); |
86dfc6f3 LZ |
203 | |
204 | release_and_exit: | |
205 | ||
ed6f1d44 | 206 | /* Release the temporary table descriptor */ |
86dfc6f3 | 207 | |
ed6f1d44 | 208 | acpi_tb_release_temp_table(&new_table_desc); |
86dfc6f3 LZ |
209 | return_ACPI_STATUS(status); |
210 | } | |
211 | ||
86dfc6f3 LZ |
212 | /******************************************************************************* |
213 | * | |
ed6f1d44 | 214 | * FUNCTION: acpi_tb_install_standard_table |
86dfc6f3 | 215 | * |
8a216d7f | 216 | * PARAMETERS: address - Address of the table (might be a virtual |
86dfc6f3 LZ |
217 | * address depending on the table_flags) |
218 | * flags - Flags for the table | |
219 | * reload - Whether reload should be performed | |
caf4a15c | 220 | * override - Whether override should be performed |
86dfc6f3 LZ |
221 | * table_index - Where the table index is returned |
222 | * | |
223 | * RETURN: Status | |
224 | * | |
225 | * DESCRIPTION: This function is called to install an ACPI table that is | |
ed6f1d44 | 226 | * neither DSDT nor FACS (a "standard" table.) |
86dfc6f3 LZ |
227 | * When this function is called by "Load" or "LoadTable" opcodes, |
228 | * or by acpi_load_table() API, the "Reload" parameter is set. | |
229 | * After sucessfully returning from this function, table is | |
230 | * "INSTALLED" but not "VALIDATED". | |
231 | * | |
232 | ******************************************************************************/ | |
233 | ||
234 | acpi_status | |
ed6f1d44 BM |
235 | acpi_tb_install_standard_table(acpi_physical_address address, |
236 | u8 flags, | |
237 | u8 reload, u8 override, u32 *table_index) | |
86dfc6f3 LZ |
238 | { |
239 | u32 i; | |
240 | acpi_status status = AE_OK; | |
241 | struct acpi_table_desc new_table_desc; | |
242 | ||
ed6f1d44 | 243 | ACPI_FUNCTION_TRACE(tb_install_standard_table); |
86dfc6f3 | 244 | |
ed6f1d44 | 245 | /* Acquire a temporary table descriptor for validation */ |
86dfc6f3 | 246 | |
ed6f1d44 | 247 | status = acpi_tb_acquire_temp_table(&new_table_desc, address, flags); |
86dfc6f3 LZ |
248 | if (ACPI_FAILURE(status)) { |
249 | ACPI_ERROR((AE_INFO, "Could not acquire table length at %p", | |
250 | ACPI_CAST_PTR(void, address))); | |
251 | return_ACPI_STATUS(status); | |
252 | } | |
253 | ||
a94e88cd LZ |
254 | /* |
255 | * Optionally do not load any SSDTs from the RSDT/XSDT. This can | |
256 | * be useful for debugging ACPI problems on some machines. | |
257 | */ | |
ed6f1d44 BM |
258 | if (!reload && |
259 | acpi_gbl_disable_ssdt_table_install && | |
a94e88cd LZ |
260 | ACPI_COMPARE_NAME(&new_table_desc.signature, ACPI_SIG_SSDT)) { |
261 | ACPI_INFO((AE_INFO, "Ignoring installation of %4.4s at %p", | |
262 | new_table_desc.signature.ascii, ACPI_CAST_PTR(void, | |
263 | address))); | |
264 | goto release_and_exit; | |
265 | } | |
266 | ||
86dfc6f3 LZ |
267 | /* Validate and verify a table before installation */ |
268 | ||
47d68c7f | 269 | status = acpi_tb_verify_temp_table(&new_table_desc, NULL); |
86dfc6f3 LZ |
270 | if (ACPI_FAILURE(status)) { |
271 | goto release_and_exit; | |
272 | } | |
273 | ||
274 | if (reload) { | |
275 | /* | |
276 | * Validate the incoming table signature. | |
277 | * | |
278 | * 1) Originally, we checked the table signature for "SSDT" or "PSDT". | |
279 | * 2) We added support for OEMx tables, signature "OEM". | |
280 | * 3) Valid tables were encountered with a null signature, so we just | |
281 | * gave up on validating the signature, (05/2008). | |
282 | * 4) We encountered non-AML tables such as the MADT, which caused | |
283 | * interpreter errors and kernel faults. So now, we once again allow | |
284 | * only "SSDT", "OEMx", and now, also a null signature. (05/2011). | |
285 | */ | |
286 | if ((new_table_desc.signature.ascii[0] != 0x00) && | |
287 | (!ACPI_COMPARE_NAME | |
288 | (&new_table_desc.signature, ACPI_SIG_SSDT)) | |
289 | && (ACPI_STRNCMP(new_table_desc.signature.ascii, "OEM", 3))) | |
290 | { | |
291 | ACPI_BIOS_ERROR((AE_INFO, | |
292 | "Table has invalid signature [%4.4s] (0x%8.8X), " | |
293 | "must be SSDT or OEMx", | |
294 | acpi_ut_valid_acpi_name(new_table_desc. | |
295 | signature. | |
296 | ascii) ? | |
297 | new_table_desc.signature. | |
298 | ascii : "????", | |
299 | new_table_desc.signature.integer)); | |
300 | ||
301 | status = AE_BAD_SIGNATURE; | |
302 | goto release_and_exit; | |
303 | } | |
304 | ||
305 | /* Check if table is already registered */ | |
306 | ||
307 | for (i = 0; i < acpi_gbl_root_table_list.current_table_count; | |
308 | ++i) { | |
309 | /* | |
310 | * Check for a table match on the entire table length, | |
311 | * not just the header. | |
312 | */ | |
c418ce19 | 313 | if (!acpi_tb_compare_tables(&new_table_desc, i)) { |
86dfc6f3 LZ |
314 | continue; |
315 | } | |
316 | ||
317 | /* | |
318 | * Note: the current mechanism does not unregister a table if it is | |
319 | * dynamically unloaded. The related namespace entries are deleted, | |
320 | * but the table remains in the root table list. | |
321 | * | |
322 | * The assumption here is that the number of different tables that | |
323 | * will be loaded is actually small, and there is minimal overhead | |
324 | * in just keeping the table in case it is needed again. | |
325 | * | |
326 | * If this assumption changes in the future (perhaps on large | |
327 | * machines with many table load/unload operations), tables will | |
328 | * need to be unregistered when they are unloaded, and slots in the | |
329 | * root table list should be reused when empty. | |
330 | */ | |
331 | if (acpi_gbl_root_table_list.tables[i]. | |
332 | flags & ACPI_TABLE_IS_LOADED) { | |
333 | ||
334 | /* Table is still loaded, this is an error */ | |
335 | ||
336 | status = AE_ALREADY_EXISTS; | |
337 | goto release_and_exit; | |
338 | } else { | |
339 | /* | |
340 | * Table was unloaded, allow it to be reloaded. | |
341 | * As we are going to return AE_OK to the caller, we should | |
342 | * take the responsibility of freeing the input descriptor. | |
343 | * Refill the input descriptor to ensure | |
ed6f1d44 | 344 | * acpi_tb_install_table_with_override() can be called again to |
86dfc6f3 LZ |
345 | * indicate the re-installation. |
346 | */ | |
347 | acpi_tb_uninstall_table(&new_table_desc); | |
348 | *table_index = i; | |
349 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); | |
350 | return_ACPI_STATUS(AE_OK); | |
351 | } | |
352 | } | |
7f9fc99c | 353 | } |
d3ccaff8 | 354 | |
e56f5617 BM |
355 | /* Add the table to the global root table list */ |
356 | ||
c418ce19 | 357 | status = acpi_tb_get_next_root_index(&i); |
4be44fcd | 358 | if (ACPI_FAILURE(status)) { |
86dfc6f3 | 359 | goto release_and_exit; |
0c9938cc | 360 | } |
ed6f1d44 | 361 | |
86dfc6f3 | 362 | *table_index = i; |
ed6f1d44 | 363 | acpi_tb_install_table_with_override(i, &new_table_desc, override); |
86dfc6f3 LZ |
364 | |
365 | release_and_exit: | |
0c9938cc | 366 | |
ed6f1d44 | 367 | /* Release the temporary table descriptor */ |
1da177e4 | 368 | |
ed6f1d44 | 369 | acpi_tb_release_temp_table(&new_table_desc); |
4be44fcd | 370 | return_ACPI_STATUS(status); |
1da177e4 LT |
371 | } |
372 | ||
f7b004a1 BM |
373 | /******************************************************************************* |
374 | * | |
7f9fc99c | 375 | * FUNCTION: acpi_tb_override_table |
f7b004a1 | 376 | * |
86dfc6f3 LZ |
377 | * PARAMETERS: old_table_desc - Validated table descriptor to be |
378 | * overridden | |
f7b004a1 | 379 | * |
86dfc6f3 | 380 | * RETURN: None |
f7b004a1 BM |
381 | * |
382 | * DESCRIPTION: Attempt table override by calling the OSL override functions. | |
383 | * Note: If the table is overridden, then the entire new table | |
7f9fc99c | 384 | * is acquired and returned by this function. |
86dfc6f3 LZ |
385 | * Before/after invocation, the table descriptor is in a state |
386 | * that is "VALIDATED". | |
f7b004a1 BM |
387 | * |
388 | ******************************************************************************/ | |
389 | ||
86dfc6f3 | 390 | void acpi_tb_override_table(struct acpi_table_desc *old_table_desc) |
f7b004a1 BM |
391 | { |
392 | acpi_status status; | |
f7b004a1 | 393 | char *override_type; |
7f9fc99c | 394 | struct acpi_table_desc new_table_desc; |
86dfc6f3 LZ |
395 | struct acpi_table_header *table; |
396 | acpi_physical_address address; | |
397 | u32 length; | |
f7b004a1 BM |
398 | |
399 | /* (1) Attempt logical override (returns a logical address) */ | |
400 | ||
86dfc6f3 LZ |
401 | status = acpi_os_table_override(old_table_desc->pointer, &table); |
402 | if (ACPI_SUCCESS(status) && table) { | |
ed6f1d44 BM |
403 | acpi_tb_acquire_temp_table(&new_table_desc, |
404 | ACPI_PTR_TO_PHYSADDR(table), | |
405 | ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL); | |
f7b004a1 BM |
406 | override_type = "Logical"; |
407 | goto finish_override; | |
408 | } | |
409 | ||
410 | /* (2) Attempt physical override (returns a physical address) */ | |
411 | ||
86dfc6f3 LZ |
412 | status = acpi_os_physical_table_override(old_table_desc->pointer, |
413 | &address, &length); | |
414 | if (ACPI_SUCCESS(status) && address && length) { | |
ed6f1d44 BM |
415 | acpi_tb_acquire_temp_table(&new_table_desc, address, |
416 | ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL); | |
f7b004a1 | 417 | override_type = "Physical"; |
f7b004a1 BM |
418 | goto finish_override; |
419 | } | |
420 | ||
86dfc6f3 | 421 | return; /* There was no override */ |
f7b004a1 | 422 | |
10622bf8 | 423 | finish_override: |
f7b004a1 | 424 | |
86dfc6f3 LZ |
425 | /* Validate and verify a table before overriding */ |
426 | ||
47d68c7f | 427 | status = acpi_tb_verify_temp_table(&new_table_desc, NULL); |
7f9fc99c | 428 | if (ACPI_FAILURE(status)) { |
86dfc6f3 | 429 | return; |
7f9fc99c LZ |
430 | } |
431 | ||
2e19f8d0 BM |
432 | ACPI_INFO((AE_INFO, "%4.4s " ACPI_PRINTF_UINT |
433 | " %s table override, new table: " ACPI_PRINTF_UINT, | |
86dfc6f3 LZ |
434 | old_table_desc->signature.ascii, |
435 | ACPI_FORMAT_TO_UINT(old_table_desc->address), | |
7f9fc99c | 436 | override_type, ACPI_FORMAT_TO_UINT(new_table_desc.address))); |
f7b004a1 | 437 | |
86dfc6f3 | 438 | /* We can now uninstall the original table */ |
f7b004a1 | 439 | |
86dfc6f3 | 440 | acpi_tb_uninstall_table(old_table_desc); |
f7b004a1 | 441 | |
86dfc6f3 LZ |
442 | /* |
443 | * Replace the original table descriptor and keep its state as | |
444 | * "VALIDATED". | |
445 | */ | |
ed6f1d44 BM |
446 | acpi_tb_init_table_descriptor(old_table_desc, new_table_desc.address, |
447 | new_table_desc.flags, | |
448 | new_table_desc.pointer); | |
47d68c7f | 449 | acpi_tb_validate_temp_table(old_table_desc); |
f7b004a1 | 450 | |
ed6f1d44 | 451 | /* Release the temporary table descriptor */ |
f7b004a1 | 452 | |
ed6f1d44 | 453 | acpi_tb_release_temp_table(&new_table_desc); |
f7b004a1 BM |
454 | } |
455 | ||
86dfc6f3 LZ |
456 | /******************************************************************************* |
457 | * | |
458 | * FUNCTION: acpi_tb_store_table | |
459 | * | |
460 | * PARAMETERS: address - Table address | |
461 | * table - Table header | |
462 | * length - Table length | |
ed6f1d44 BM |
463 | * flags - Install flags |
464 | * table_index - Where the table index is returned | |
86dfc6f3 LZ |
465 | * |
466 | * RETURN: Status and table index. | |
467 | * | |
468 | * DESCRIPTION: Add an ACPI table to the global table list | |
469 | * | |
470 | ******************************************************************************/ | |
471 | ||
472 | acpi_status | |
473 | acpi_tb_store_table(acpi_physical_address address, | |
474 | struct acpi_table_header * table, | |
475 | u32 length, u8 flags, u32 *table_index) | |
476 | { | |
477 | acpi_status status; | |
478 | struct acpi_table_desc *table_desc; | |
479 | ||
c418ce19 | 480 | status = acpi_tb_get_next_root_index(table_index); |
86dfc6f3 LZ |
481 | if (ACPI_FAILURE(status)) { |
482 | return (status); | |
483 | } | |
f3d2e786 | 484 | |
86dfc6f3 | 485 | /* Initialize added table */ |
b9ee2043 | 486 | |
86dfc6f3 | 487 | table_desc = &acpi_gbl_root_table_list.tables[*table_index]; |
ed6f1d44 | 488 | acpi_tb_init_table_descriptor(table_desc, address, flags, table); |
86dfc6f3 | 489 | table_desc->pointer = table; |
b9ee2043 | 490 | return (AE_OK); |
f3d2e786 | 491 | } |
1da177e4 | 492 | |
f3d2e786 BM |
493 | /******************************************************************************* |
494 | * | |
7f9fc99c | 495 | * FUNCTION: acpi_tb_uninstall_table |
f3d2e786 | 496 | * |
7f9fc99c | 497 | * PARAMETERS: table_desc - Table descriptor |
f3d2e786 BM |
498 | * |
499 | * RETURN: None | |
500 | * | |
501 | * DESCRIPTION: Delete one internal ACPI table | |
502 | * | |
503 | ******************************************************************************/ | |
1da177e4 | 504 | |
7f9fc99c | 505 | void acpi_tb_uninstall_table(struct acpi_table_desc *table_desc) |
f3d2e786 | 506 | { |
5582982d | 507 | |
7f9fc99c | 508 | ACPI_FUNCTION_TRACE(tb_uninstall_table); |
5582982d | 509 | |
7f9fc99c | 510 | /* Table must be installed */ |
5582982d | 511 | |
7f9fc99c LZ |
512 | if (!table_desc->address) { |
513 | return_VOID; | |
514 | } | |
f7b004a1 | 515 | |
7f9fc99c | 516 | acpi_tb_invalidate_table(table_desc); |
1d1ea1b7 | 517 | |
7f9fc99c | 518 | if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) == |
ed6f1d44 | 519 | ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL) { |
7f9fc99c | 520 | ACPI_FREE(ACPI_CAST_PTR(void, table_desc->address)); |
1da177e4 LT |
521 | } |
522 | ||
7f9fc99c | 523 | table_desc->address = ACPI_PTR_TO_PHYSADDR(NULL); |
7f9fc99c | 524 | return_VOID; |
1da177e4 | 525 | } |