blob: 008a251780f4c955194c7193dd943bf955028b34 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/******************************************************************************
2 *
3 * Module Name: tbinstal - ACPI table installation and removal
4 *
5 *****************************************************************************/
6
7/*
David E. Box82a80942015-02-05 15:20:45 +08008 * Copyright (C) 2000 - 2015, Intel Corp.
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#include <acpi/acpi.h>
Len Browne2f7a772009-01-09 00:30:03 -050045#include "accommon.h"
Len Browne2f7a772009-01-09 00:30:03 -050046#include "actables.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
Linus Torvalds1da177e2005-04-16 15:20:36 -070048#define _COMPONENT ACPI_TABLES
Len Brown4be44fc2005-08-05 00:44:28 -040049ACPI_MODULE_NAME("tbinstal")
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
Lv Zheng86dfc6f32014-04-04 12:38:57 +080051/* Local prototypes */
Bob Moorec418ce12014-04-04 12:39:34 +080052static u8
53acpi_tb_compare_tables(struct acpi_table_desc *table_desc, u32 table_index);
Lv Zheng86dfc6f32014-04-04 12:38:57 +080054
Bob Moorec418ce12014-04-04 12:39:34 +080055/*******************************************************************************
56 *
57 * FUNCTION: acpi_tb_compare_tables
58 *
59 * PARAMETERS: table_desc - Table 1 descriptor to be compared
60 * table_index - Index of table 2 to be compared
61 *
62 * RETURN: TRUE if both tables are identical.
63 *
64 * DESCRIPTION: This function compares a table with another table that has
65 * already been installed in the root table list.
66 *
67 ******************************************************************************/
Lv Zheng86dfc6f32014-04-04 12:38:57 +080068
69static u8
Bob Moorec418ce12014-04-04 12:39:34 +080070acpi_tb_compare_tables(struct acpi_table_desc *table_desc, u32 table_index)
Linus Torvalds1da177e2005-04-16 15:20:36 -070071{
Alexey Starikovskiy428f2112007-02-02 19:48:22 +030072 acpi_status status = AE_OK;
Bob Moorec418ce12014-04-04 12:39:34 +080073 u8 is_identical;
74 struct acpi_table_header *table;
75 u32 table_length;
76 u8 table_flags;
Lv Zheng86dfc6f32014-04-04 12:38:57 +080077
78 status =
Bob Moorec418ce12014-04-04 12:39:34 +080079 acpi_tb_acquire_table(&acpi_gbl_root_table_list.tables[table_index],
80 &table, &table_length, &table_flags);
Lv Zheng86dfc6f32014-04-04 12:38:57 +080081 if (ACPI_FAILURE(status)) {
Bob Moorec418ce12014-04-04 12:39:34 +080082 return (FALSE);
Lv Zheng86dfc6f32014-04-04 12:38:57 +080083 }
84
Bob Moorebc45b1d2008-06-10 14:12:50 +080085 /*
Bob Moorec418ce12014-04-04 12:39:34 +080086 * Check for a table match on the entire table length,
87 * not just the header.
Bob Moorebc45b1d2008-06-10 14:12:50 +080088 */
Bob Moorec418ce12014-04-04 12:39:34 +080089 is_identical = (u8)((table_desc->length != table_length ||
90 ACPI_MEMCMP(table_desc->pointer, table,
91 table_length)) ? FALSE : TRUE);
Bob Moorec8cefe32011-06-14 10:42:53 +080092
Bob Moorec418ce12014-04-04 12:39:34 +080093 /* Release the acquired table */
Lv Zheng86dfc6f32014-04-04 12:38:57 +080094
Bob Moorec418ce12014-04-04 12:39:34 +080095 acpi_tb_release_table(table, table_length, table_flags);
96 return (is_identical);
Lv Zheng86dfc6f32014-04-04 12:38:57 +080097}
Bob Mooree56f5612008-07-04 10:48:43 +080098
Lv Zheng86dfc6f32014-04-04 12:38:57 +080099/*******************************************************************************
100 *
Bob Mooreed6f1d42014-04-04 12:39:26 +0800101 * FUNCTION: acpi_tb_install_table_with_override
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800102 *
103 * PARAMETERS: table_index - Index into root table array
104 * new_table_desc - New table descriptor to install
Lv Zhengcaf4a152014-04-04 12:39:18 +0800105 * override - Whether override should be performed
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800106 *
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 ******************************************************************************/
Bob Mooref3d2e782007-02-02 19:48:18 +0300115
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800116void
Bob Mooreed6f1d42014-04-04 12:39:26 +0800117acpi_tb_install_table_with_override(u32 table_index,
118 struct acpi_table_desc *new_table_desc,
119 u8 override)
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800120{
Bob Mooreed6f1d42014-04-04 12:39:26 +0800121
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800122 if (table_index >= acpi_gbl_root_table_list.current_table_count) {
123 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 }
125
Bob Moored3ccaff2009-02-03 14:43:04 +0800126 /*
127 * ACPI Table Override:
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800128 *
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.
Bob Moored3ccaff2009-02-03 14:43:04 +0800132 */
Lv Zhengcaf4a152014-04-04 12:39:18 +0800133 if (override) {
134 acpi_tb_override_table(new_table_desc);
135 }
Lv Zheng7f9fc992014-04-04 12:38:42 +0800136
Bob Mooreed6f1d42014-04-04 12:39:26 +0800137 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);
Lv Zheng7f9fc992014-04-04 12:38:42 +0800142
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800143 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
169acpi_status
170acpi_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
Bob Mooreed6f1d42014-04-04 12:39:26 +0800187 status = acpi_tb_acquire_temp_table(&new_table_desc, address,
188 ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL);
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800189 if (ACPI_FAILURE(status)) {
Lv Zhengcc2080b2015-04-13 11:48:46 +0800190 ACPI_ERROR((AE_INFO,
191 "Could not acquire table length at %8.8X%8.8X",
192 ACPI_FORMAT_UINT64(address)));
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800193 return_ACPI_STATUS(status);
194 }
195
196 /* Validate and verify a table before installation */
197
Lv Zheng47d68c72014-05-31 08:14:44 +0800198 status = acpi_tb_verify_temp_table(&new_table_desc, signature);
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800199 if (ACPI_FAILURE(status)) {
200 goto release_and_exit;
201 }
202
Bob Mooreed6f1d42014-04-04 12:39:26 +0800203 acpi_tb_install_table_with_override(table_index, &new_table_desc, TRUE);
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800204
205release_and_exit:
206
Bob Mooreed6f1d42014-04-04 12:39:26 +0800207 /* Release the temporary table descriptor */
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800208
Bob Mooreed6f1d42014-04-04 12:39:26 +0800209 acpi_tb_release_temp_table(&new_table_desc);
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800210 return_ACPI_STATUS(status);
211}
212
213/*******************************************************************************
214 *
Bob Mooreed6f1d42014-04-04 12:39:26 +0800215 * FUNCTION: acpi_tb_install_standard_table
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800216 *
Lv Zheng8a216d72014-04-04 12:39:04 +0800217 * PARAMETERS: address - Address of the table (might be a virtual
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800218 * address depending on the table_flags)
219 * flags - Flags for the table
220 * reload - Whether reload should be performed
Lv Zhengcaf4a152014-04-04 12:39:18 +0800221 * override - Whether override should be performed
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800222 * table_index - Where the table index is returned
223 *
224 * RETURN: Status
225 *
226 * DESCRIPTION: This function is called to install an ACPI table that is
Bob Mooreed6f1d42014-04-04 12:39:26 +0800227 * neither DSDT nor FACS (a "standard" table.)
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800228 * When this function is called by "Load" or "LoadTable" opcodes,
229 * or by acpi_load_table() API, the "Reload" parameter is set.
230 * After sucessfully returning from this function, table is
231 * "INSTALLED" but not "VALIDATED".
232 *
233 ******************************************************************************/
234
235acpi_status
Bob Mooreed6f1d42014-04-04 12:39:26 +0800236acpi_tb_install_standard_table(acpi_physical_address address,
237 u8 flags,
238 u8 reload, u8 override, u32 *table_index)
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800239{
240 u32 i;
241 acpi_status status = AE_OK;
242 struct acpi_table_desc new_table_desc;
243
Bob Mooreed6f1d42014-04-04 12:39:26 +0800244 ACPI_FUNCTION_TRACE(tb_install_standard_table);
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800245
Bob Mooreed6f1d42014-04-04 12:39:26 +0800246 /* Acquire a temporary table descriptor for validation */
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800247
Bob Mooreed6f1d42014-04-04 12:39:26 +0800248 status = acpi_tb_acquire_temp_table(&new_table_desc, address, flags);
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800249 if (ACPI_FAILURE(status)) {
Lv Zhengcc2080b2015-04-13 11:48:46 +0800250 ACPI_ERROR((AE_INFO,
251 "Could not acquire table length at %8.8X%8.8X",
252 ACPI_FORMAT_UINT64(address)));
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800253 return_ACPI_STATUS(status);
254 }
255
Lv Zhenga94e88c2014-04-04 12:39:11 +0800256 /*
257 * Optionally do not load any SSDTs from the RSDT/XSDT. This can
258 * be useful for debugging ACPI problems on some machines.
259 */
Bob Mooreed6f1d42014-04-04 12:39:26 +0800260 if (!reload &&
261 acpi_gbl_disable_ssdt_table_install &&
Lv Zhenga94e88c2014-04-04 12:39:11 +0800262 ACPI_COMPARE_NAME(&new_table_desc.signature, ACPI_SIG_SSDT)) {
Lv Zhengcc2080b2015-04-13 11:48:46 +0800263 ACPI_INFO((AE_INFO,
264 "Ignoring installation of %4.4s at %8.8X%8.8X",
Lv Zheng6d3fd3c2015-04-13 11:48:37 +0800265 new_table_desc.signature.ascii,
Lv Zhengcc2080b2015-04-13 11:48:46 +0800266 ACPI_FORMAT_UINT64(address)));
Lv Zhenga94e88c2014-04-04 12:39:11 +0800267 goto release_and_exit;
268 }
269
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800270 /* Validate and verify a table before installation */
271
Lv Zheng47d68c72014-05-31 08:14:44 +0800272 status = acpi_tb_verify_temp_table(&new_table_desc, NULL);
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800273 if (ACPI_FAILURE(status)) {
274 goto release_and_exit;
275 }
276
277 if (reload) {
278 /*
279 * Validate the incoming table signature.
280 *
281 * 1) Originally, we checked the table signature for "SSDT" or "PSDT".
282 * 2) We added support for OEMx tables, signature "OEM".
283 * 3) Valid tables were encountered with a null signature, so we just
284 * gave up on validating the signature, (05/2008).
285 * 4) We encountered non-AML tables such as the MADT, which caused
286 * interpreter errors and kernel faults. So now, we once again allow
287 * only "SSDT", "OEMx", and now, also a null signature. (05/2011).
288 */
289 if ((new_table_desc.signature.ascii[0] != 0x00) &&
290 (!ACPI_COMPARE_NAME
291 (&new_table_desc.signature, ACPI_SIG_SSDT))
292 && (ACPI_STRNCMP(new_table_desc.signature.ascii, "OEM", 3)))
293 {
294 ACPI_BIOS_ERROR((AE_INFO,
295 "Table has invalid signature [%4.4s] (0x%8.8X), "
296 "must be SSDT or OEMx",
297 acpi_ut_valid_acpi_name(new_table_desc.
298 signature.
299 ascii) ?
300 new_table_desc.signature.
301 ascii : "????",
302 new_table_desc.signature.integer));
303
304 status = AE_BAD_SIGNATURE;
305 goto release_and_exit;
306 }
307
308 /* Check if table is already registered */
309
310 for (i = 0; i < acpi_gbl_root_table_list.current_table_count;
311 ++i) {
312 /*
313 * Check for a table match on the entire table length,
314 * not just the header.
315 */
Bob Moorec418ce12014-04-04 12:39:34 +0800316 if (!acpi_tb_compare_tables(&new_table_desc, i)) {
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800317 continue;
318 }
319
320 /*
321 * Note: the current mechanism does not unregister a table if it is
322 * dynamically unloaded. The related namespace entries are deleted,
323 * but the table remains in the root table list.
324 *
325 * The assumption here is that the number of different tables that
326 * will be loaded is actually small, and there is minimal overhead
327 * in just keeping the table in case it is needed again.
328 *
329 * If this assumption changes in the future (perhaps on large
330 * machines with many table load/unload operations), tables will
331 * need to be unregistered when they are unloaded, and slots in the
332 * root table list should be reused when empty.
333 */
334 if (acpi_gbl_root_table_list.tables[i].
335 flags & ACPI_TABLE_IS_LOADED) {
336
337 /* Table is still loaded, this is an error */
338
339 status = AE_ALREADY_EXISTS;
340 goto release_and_exit;
341 } else {
342 /*
343 * Table was unloaded, allow it to be reloaded.
344 * As we are going to return AE_OK to the caller, we should
345 * take the responsibility of freeing the input descriptor.
346 * Refill the input descriptor to ensure
Bob Mooreed6f1d42014-04-04 12:39:26 +0800347 * acpi_tb_install_table_with_override() can be called again to
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800348 * indicate the re-installation.
349 */
350 acpi_tb_uninstall_table(&new_table_desc);
351 *table_index = i;
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800352 return_ACPI_STATUS(AE_OK);
353 }
354 }
Lv Zheng7f9fc992014-04-04 12:38:42 +0800355 }
Bob Moored3ccaff2009-02-03 14:43:04 +0800356
Bob Mooree56f5612008-07-04 10:48:43 +0800357 /* Add the table to the global root table list */
358
Lv Zheng76cffa72015-04-13 11:49:30 +0800359 status = acpi_tb_get_next_table_descriptor(&i, NULL);
Len Brown4be44fc2005-08-05 00:44:28 -0400360 if (ACPI_FAILURE(status)) {
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800361 goto release_and_exit;
Robert Moore0c9938c2005-07-29 15:15:00 -0700362 }
Bob Mooreed6f1d42014-04-04 12:39:26 +0800363
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800364 *table_index = i;
Bob Mooreed6f1d42014-04-04 12:39:26 +0800365 acpi_tb_install_table_with_override(i, &new_table_desc, override);
Robert Moore0c9938c2005-07-29 15:15:00 -0700366
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800367release_and_exit:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
Bob Mooreed6f1d42014-04-04 12:39:26 +0800369 /* Release the temporary table descriptor */
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800370
Bob Mooreed6f1d42014-04-04 12:39:26 +0800371 acpi_tb_release_temp_table(&new_table_desc);
Len Brown4be44fc2005-08-05 00:44:28 -0400372 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373}
374
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375/*******************************************************************************
376 *
Lv Zheng7f9fc992014-04-04 12:38:42 +0800377 * FUNCTION: acpi_tb_override_table
Bob Mooref7b004a2012-02-14 18:31:56 +0800378 *
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800379 * PARAMETERS: old_table_desc - Validated table descriptor to be
380 * overridden
Bob Mooref7b004a2012-02-14 18:31:56 +0800381 *
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800382 * RETURN: None
Bob Mooref7b004a2012-02-14 18:31:56 +0800383 *
384 * DESCRIPTION: Attempt table override by calling the OSL override functions.
385 * Note: If the table is overridden, then the entire new table
Lv Zheng7f9fc992014-04-04 12:38:42 +0800386 * is acquired and returned by this function.
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800387 * Before/after invocation, the table descriptor is in a state
388 * that is "VALIDATED".
Bob Mooref7b004a2012-02-14 18:31:56 +0800389 *
390 ******************************************************************************/
391
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800392void acpi_tb_override_table(struct acpi_table_desc *old_table_desc)
Bob Mooref7b004a2012-02-14 18:31:56 +0800393{
394 acpi_status status;
Bob Mooref7b004a2012-02-14 18:31:56 +0800395 char *override_type;
Lv Zheng7f9fc992014-04-04 12:38:42 +0800396 struct acpi_table_desc new_table_desc;
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800397 struct acpi_table_header *table;
398 acpi_physical_address address;
399 u32 length;
Bob Mooref7b004a2012-02-14 18:31:56 +0800400
401 /* (1) Attempt logical override (returns a logical address) */
402
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800403 status = acpi_os_table_override(old_table_desc->pointer, &table);
404 if (ACPI_SUCCESS(status) && table) {
Bob Mooreed6f1d42014-04-04 12:39:26 +0800405 acpi_tb_acquire_temp_table(&new_table_desc,
406 ACPI_PTR_TO_PHYSADDR(table),
407 ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL);
Bob Mooref7b004a2012-02-14 18:31:56 +0800408 override_type = "Logical";
409 goto finish_override;
410 }
411
412 /* (2) Attempt physical override (returns a physical address) */
413
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800414 status = acpi_os_physical_table_override(old_table_desc->pointer,
415 &address, &length);
416 if (ACPI_SUCCESS(status) && address && length) {
Bob Mooreed6f1d42014-04-04 12:39:26 +0800417 acpi_tb_acquire_temp_table(&new_table_desc, address,
418 ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL);
Bob Mooref7b004a2012-02-14 18:31:56 +0800419 override_type = "Physical";
Bob Mooref7b004a2012-02-14 18:31:56 +0800420 goto finish_override;
421 }
422
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800423 return; /* There was no override */
Bob Mooref7b004a2012-02-14 18:31:56 +0800424
Lv Zheng10622bf2013-10-29 09:30:02 +0800425finish_override:
Bob Mooref7b004a2012-02-14 18:31:56 +0800426
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800427 /* Validate and verify a table before overriding */
428
Lv Zheng47d68c72014-05-31 08:14:44 +0800429 status = acpi_tb_verify_temp_table(&new_table_desc, NULL);
Lv Zheng7f9fc992014-04-04 12:38:42 +0800430 if (ACPI_FAILURE(status)) {
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800431 return;
Lv Zheng7f9fc992014-04-04 12:38:42 +0800432 }
433
Lv Zheng1d0a0b22015-04-13 11:48:52 +0800434 ACPI_INFO((AE_INFO, "%4.4s 0x%8.8X%8.8X"
435 " %s table override, new table: 0x%8.8X%8.8X",
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800436 old_table_desc->signature.ascii,
Lv Zheng1d0a0b22015-04-13 11:48:52 +0800437 ACPI_FORMAT_UINT64(old_table_desc->address),
438 override_type, ACPI_FORMAT_UINT64(new_table_desc.address)));
Bob Mooref7b004a2012-02-14 18:31:56 +0800439
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800440 /* We can now uninstall the original table */
Bob Mooref7b004a2012-02-14 18:31:56 +0800441
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800442 acpi_tb_uninstall_table(old_table_desc);
Bob Mooref7b004a2012-02-14 18:31:56 +0800443
Lv Zheng86dfc6f32014-04-04 12:38:57 +0800444 /*
445 * Replace the original table descriptor and keep its state as
446 * "VALIDATED".
447 */
Bob Mooreed6f1d42014-04-04 12:39:26 +0800448 acpi_tb_init_table_descriptor(old_table_desc, new_table_desc.address,
449 new_table_desc.flags,
450 new_table_desc.pointer);
Lv Zheng47d68c72014-05-31 08:14:44 +0800451 acpi_tb_validate_temp_table(old_table_desc);
Bob Mooref7b004a2012-02-14 18:31:56 +0800452
Bob Mooreed6f1d42014-04-04 12:39:26 +0800453 /* Release the temporary table descriptor */
Bob Mooref7b004a2012-02-14 18:31:56 +0800454
Bob Mooreed6f1d42014-04-04 12:39:26 +0800455 acpi_tb_release_temp_table(&new_table_desc);
Bob Mooref7b004a2012-02-14 18:31:56 +0800456}
457
458/*******************************************************************************
459 *
Lv Zheng7f9fc992014-04-04 12:38:42 +0800460 * FUNCTION: acpi_tb_uninstall_table
Bob Mooref3d2e782007-02-02 19:48:18 +0300461 *
Lv Zheng7f9fc992014-04-04 12:38:42 +0800462 * PARAMETERS: table_desc - Table descriptor
Bob Mooref3d2e782007-02-02 19:48:18 +0300463 *
464 * RETURN: None
465 *
466 * DESCRIPTION: Delete one internal ACPI table
467 *
468 ******************************************************************************/
469
Lv Zheng7f9fc992014-04-04 12:38:42 +0800470void acpi_tb_uninstall_table(struct acpi_table_desc *table_desc)
Bob Mooref3d2e782007-02-02 19:48:18 +0300471{
Lv Zheng55829822014-04-04 12:38:18 +0800472
Lv Zheng7f9fc992014-04-04 12:38:42 +0800473 ACPI_FUNCTION_TRACE(tb_uninstall_table);
Lv Zheng55829822014-04-04 12:38:18 +0800474
Lv Zheng7f9fc992014-04-04 12:38:42 +0800475 /* Table must be installed */
476
477 if (!table_desc->address) {
478 return_VOID;
Bob Mooref3d2e782007-02-02 19:48:18 +0300479 }
Lv Zheng55829822014-04-04 12:38:18 +0800480
Lv Zheng7f9fc992014-04-04 12:38:42 +0800481 acpi_tb_invalidate_table(table_desc);
Chao Guan1d1ea1b2013-06-08 00:58:14 +0000482
Lv Zheng7f9fc992014-04-04 12:38:42 +0800483 if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) ==
Bob Mooreed6f1d42014-04-04 12:39:26 +0800484 ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL) {
Lv Zheng6d3fd3c2015-04-13 11:48:37 +0800485 ACPI_FREE(ACPI_PHYSADDR_TO_PTR(table_desc->address));
Bob Mooref3d2e782007-02-02 19:48:18 +0300486 }
487
Lv Zheng7f9fc992014-04-04 12:38:42 +0800488 table_desc->address = ACPI_PTR_TO_PHYSADDR(NULL);
Lv Zheng7f9fc992014-04-04 12:38:42 +0800489 return_VOID;
Bob Mooref3d2e782007-02-02 19:48:18 +0300490}