Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: tbinstal - ACPI table installation and removal |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <acpi/acpi.h> |
| 45 | #include <acpi/actables.h> |
| 46 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #define _COMPONENT ACPI_TABLES |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 48 | ACPI_MODULE_NAME("tbinstal") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 50 | /* Local prototypes */ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 51 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 52 | acpi_tb_match_signature(char *signature, |
| 53 | struct acpi_table_desc *table_info, u8 search_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
| 55 | /******************************************************************************* |
| 56 | * |
| 57 | * FUNCTION: acpi_tb_match_signature |
| 58 | * |
| 59 | * PARAMETERS: Signature - Table signature to match |
| 60 | * table_info - Return data |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 61 | * search_type - Table type to match (primary/secondary) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | * |
| 63 | * RETURN: Status |
| 64 | * |
| 65 | * DESCRIPTION: Compare signature against the list of "ACPI-subsystem-owned" |
| 66 | * tables (DSDT/FADT/SSDT, etc.) Returns the table_type_iD on match. |
| 67 | * |
| 68 | ******************************************************************************/ |
| 69 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 70 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 71 | acpi_tb_match_signature(char *signature, |
| 72 | struct acpi_table_desc *table_info, u8 search_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 74 | acpi_native_uint i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 76 | ACPI_FUNCTION_TRACE("tb_match_signature"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 78 | /* Search for a signature match among the known table types */ |
| 79 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | for (i = 0; i < NUM_ACPI_TABLE_TYPES; i++) { |
| 81 | if (!(acpi_gbl_table_data[i].flags & search_type)) { |
| 82 | continue; |
| 83 | } |
| 84 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 85 | if (!ACPI_STRNCMP(signature, acpi_gbl_table_data[i].signature, |
| 86 | acpi_gbl_table_data[i].sig_length)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | /* Found a signature match, return index if requested */ |
| 88 | |
| 89 | if (table_info) { |
| 90 | table_info->type = (u8) i; |
| 91 | } |
| 92 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 93 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 94 | "Table [%4.4s] is an ACPI table consumed by the core subsystem\n", |
| 95 | (char *)acpi_gbl_table_data[i]. |
| 96 | signature)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 98 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | } |
| 101 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 102 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 103 | "Table [%4.4s] is not an ACPI table consumed by the core subsystem - ignored\n", |
| 104 | (char *)signature)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 106 | return_ACPI_STATUS(AE_TABLE_NOT_SUPPORTED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
| 108 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | /******************************************************************************* |
| 110 | * |
| 111 | * FUNCTION: acpi_tb_install_table |
| 112 | * |
| 113 | * PARAMETERS: table_info - Return value from acpi_tb_get_table_body |
| 114 | * |
| 115 | * RETURN: Status |
| 116 | * |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 117 | * DESCRIPTION: Install the table into the global data structures. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | * |
| 119 | ******************************************************************************/ |
| 120 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 121 | acpi_status acpi_tb_install_table(struct acpi_table_desc *table_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 123 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 125 | ACPI_FUNCTION_TRACE("tb_install_table"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | |
| 127 | /* Lock tables while installing */ |
| 128 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 129 | status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); |
| 130 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 131 | ACPI_EXCEPTION((AE_INFO, status, |
| 132 | "Could not acquire table mutex")); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 133 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | } |
| 135 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 136 | /* |
| 137 | * Ignore a table that is already installed. For example, some BIOS |
| 138 | * ASL code will repeatedly attempt to load the same SSDT. |
| 139 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 140 | status = acpi_tb_is_table_installed(table_info); |
| 141 | if (ACPI_FAILURE(status)) { |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 142 | goto unlock_and_exit; |
| 143 | } |
| 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | /* Install the table into the global data structure */ |
| 146 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 147 | status = acpi_tb_init_table_descriptor(table_info->type, table_info); |
| 148 | if (ACPI_FAILURE(status)) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 149 | ACPI_EXCEPTION((AE_INFO, status, |
| 150 | "Could not install table [%4.4s]", |
| 151 | table_info->pointer->signature)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | } |
| 153 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 154 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s located at %p\n", |
| 155 | acpi_gbl_table_data[table_info->type].name, |
| 156 | table_info->pointer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 158 | unlock_and_exit: |
| 159 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
| 160 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | } |
| 162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | /******************************************************************************* |
| 164 | * |
| 165 | * FUNCTION: acpi_tb_recognize_table |
| 166 | * |
| 167 | * PARAMETERS: table_info - Return value from acpi_tb_get_table_body |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 168 | * search_type - Table type to match (primary/secondary) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | * |
| 170 | * RETURN: Status |
| 171 | * |
| 172 | * DESCRIPTION: Check a table signature for a match against known table types |
| 173 | * |
| 174 | * NOTE: All table pointers are validated as follows: |
| 175 | * 1) Table pointer must point to valid physical memory |
| 176 | * 2) Signature must be 4 ASCII chars, even if we don't recognize the |
| 177 | * name |
| 178 | * 3) Table must be readable for length specified in the header |
| 179 | * 4) Table checksum must be valid (with the exception of the FACS |
| 180 | * which has no checksum for some odd reason) |
| 181 | * |
| 182 | ******************************************************************************/ |
| 183 | |
| 184 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 185 | acpi_tb_recognize_table(struct acpi_table_desc *table_info, u8 search_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 187 | struct acpi_table_header *table_header; |
| 188 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 190 | ACPI_FUNCTION_TRACE("tb_recognize_table"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
| 192 | /* Ensure that we have a valid table pointer */ |
| 193 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 194 | table_header = (struct acpi_table_header *)table_info->pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | if (!table_header) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 196 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | /* |
| 200 | * We only "recognize" a limited number of ACPI tables -- namely, the |
| 201 | * ones that are used by the subsystem (DSDT, FADT, etc.) |
| 202 | * |
| 203 | * An AE_TABLE_NOT_SUPPORTED means that the table was not recognized. |
| 204 | * This can be any one of many valid ACPI tables, it just isn't one of |
| 205 | * the tables that is consumed by the core subsystem |
| 206 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 207 | status = acpi_tb_match_signature(table_header->signature, |
| 208 | table_info, search_type); |
| 209 | if (ACPI_FAILURE(status)) { |
| 210 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | } |
| 212 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 213 | status = acpi_tb_validate_table_header(table_header); |
| 214 | if (ACPI_FAILURE(status)) { |
| 215 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | /* Return the table type and length via the info struct */ |
| 219 | |
| 220 | table_info->length = (acpi_size) table_header->length; |
| 221 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 222 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | } |
| 224 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | /******************************************************************************* |
| 226 | * |
| 227 | * FUNCTION: acpi_tb_init_table_descriptor |
| 228 | * |
| 229 | * PARAMETERS: table_type - The type of the table |
| 230 | * table_info - A table info struct |
| 231 | * |
| 232 | * RETURN: None. |
| 233 | * |
| 234 | * DESCRIPTION: Install a table into the global data structs. |
| 235 | * |
| 236 | ******************************************************************************/ |
| 237 | |
| 238 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 239 | acpi_tb_init_table_descriptor(acpi_table_type table_type, |
| 240 | struct acpi_table_desc *table_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 242 | struct acpi_table_list *list_head; |
| 243 | struct acpi_table_desc *table_desc; |
| 244 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 246 | ACPI_FUNCTION_TRACE_U32("tb_init_table_descriptor", table_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
| 248 | /* Allocate a descriptor for this table */ |
| 249 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 250 | table_desc = ACPI_MEM_CALLOCATE(sizeof(struct acpi_table_desc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | if (!table_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 252 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | } |
| 254 | |
Robert Moore | f9f4601 | 2005-07-08 00:00:00 -0400 | [diff] [blame] | 255 | /* Get a new owner ID for the table */ |
| 256 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 257 | status = acpi_ut_allocate_owner_id(&table_desc->owner_id); |
| 258 | if (ACPI_FAILURE(status)) { |
| 259 | return_ACPI_STATUS(status); |
Robert Moore | f9f4601 | 2005-07-08 00:00:00 -0400 | [diff] [blame] | 260 | } |
| 261 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 262 | /* Install the table into the global data structure */ |
| 263 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | list_head = &acpi_gbl_table_lists[table_type]; |
| 265 | |
| 266 | /* |
| 267 | * Two major types of tables: 1) Only one instance is allowed. This |
| 268 | * includes most ACPI tables such as the DSDT. 2) Multiple instances of |
| 269 | * the table are allowed. This includes SSDT and PSDTs. |
| 270 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 271 | if (ACPI_IS_SINGLE_TABLE(acpi_gbl_table_data[table_type].flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | /* |
| 273 | * Only one table allowed, and a table has alread been installed |
| 274 | * at this location, so return an error. |
| 275 | */ |
| 276 | if (list_head->next) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 277 | ACPI_MEM_FREE(table_desc); |
| 278 | return_ACPI_STATUS(AE_ALREADY_EXISTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | table_desc->next = list_head->next; |
| 282 | list_head->next = table_desc; |
| 283 | |
| 284 | if (table_desc->next) { |
| 285 | table_desc->next->prev = table_desc; |
| 286 | } |
| 287 | |
| 288 | list_head->count++; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 289 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | /* |
| 291 | * Link the new table in to the list of tables of this type. |
| 292 | * Insert at the end of the list, order IS IMPORTANT. |
| 293 | * |
| 294 | * table_desc->Prev & Next are already NULL from calloc() |
| 295 | */ |
| 296 | list_head->count++; |
| 297 | |
| 298 | if (!list_head->next) { |
| 299 | list_head->next = table_desc; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 300 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | table_desc->next = list_head->next; |
| 302 | |
| 303 | while (table_desc->next->next) { |
| 304 | table_desc->next = table_desc->next->next; |
| 305 | } |
| 306 | |
| 307 | table_desc->next->next = table_desc; |
| 308 | table_desc->prev = table_desc->next; |
| 309 | table_desc->next = NULL; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | /* Finish initialization of the table descriptor */ |
| 314 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 315 | table_desc->type = (u8) table_type; |
| 316 | table_desc->pointer = table_info->pointer; |
| 317 | table_desc->length = table_info->length; |
| 318 | table_desc->allocation = table_info->allocation; |
| 319 | table_desc->aml_start = (u8 *) (table_desc->pointer + 1), |
| 320 | table_desc->aml_length = (u32) (table_desc->length - |
| 321 | (u32) sizeof(struct |
| 322 | acpi_table_header)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | table_desc->loaded_into_namespace = FALSE; |
| 324 | |
| 325 | /* |
| 326 | * Set the appropriate global pointer (if there is one) to point to the |
| 327 | * newly installed table |
| 328 | */ |
| 329 | if (acpi_gbl_table_data[table_type].global_ptr) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 330 | *(acpi_gbl_table_data[table_type].global_ptr) = |
| 331 | table_info->pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | /* Return Data */ |
| 335 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 336 | table_info->owner_id = table_desc->owner_id; |
| 337 | table_info->installed_desc = table_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 339 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | } |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | /******************************************************************************* |
| 343 | * |
| 344 | * FUNCTION: acpi_tb_delete_all_tables |
| 345 | * |
| 346 | * PARAMETERS: None. |
| 347 | * |
| 348 | * RETURN: None. |
| 349 | * |
| 350 | * DESCRIPTION: Delete all internal ACPI tables |
| 351 | * |
| 352 | ******************************************************************************/ |
| 353 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 354 | void acpi_tb_delete_all_tables(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 356 | acpi_table_type type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
| 358 | /* |
| 359 | * Free memory allocated for ACPI tables |
| 360 | * Memory can either be mapped or allocated |
| 361 | */ |
| 362 | for (type = 0; type < NUM_ACPI_TABLE_TYPES; type++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 363 | acpi_tb_delete_tables_by_type(type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | } |
| 365 | } |
| 366 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | /******************************************************************************* |
| 368 | * |
| 369 | * FUNCTION: acpi_tb_delete_tables_by_type |
| 370 | * |
| 371 | * PARAMETERS: Type - The table type to be deleted |
| 372 | * |
| 373 | * RETURN: None. |
| 374 | * |
| 375 | * DESCRIPTION: Delete an internal ACPI table |
| 376 | * Locks the ACPI table mutex |
| 377 | * |
| 378 | ******************************************************************************/ |
| 379 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 380 | void acpi_tb_delete_tables_by_type(acpi_table_type type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 382 | struct acpi_table_desc *table_desc; |
| 383 | u32 count; |
| 384 | u32 i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 386 | ACPI_FUNCTION_TRACE_U32("tb_delete_tables_by_type", type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
| 388 | if (type > ACPI_TABLE_MAX) { |
| 389 | return_VOID; |
| 390 | } |
| 391 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 392 | if (ACPI_FAILURE(acpi_ut_acquire_mutex(ACPI_MTX_TABLES))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | return; |
| 394 | } |
| 395 | |
| 396 | /* Clear the appropriate "typed" global table pointer */ |
| 397 | |
| 398 | switch (type) { |
| 399 | case ACPI_TABLE_RSDP: |
| 400 | acpi_gbl_RSDP = NULL; |
| 401 | break; |
| 402 | |
| 403 | case ACPI_TABLE_DSDT: |
| 404 | acpi_gbl_DSDT = NULL; |
| 405 | break; |
| 406 | |
| 407 | case ACPI_TABLE_FADT: |
| 408 | acpi_gbl_FADT = NULL; |
| 409 | break; |
| 410 | |
| 411 | case ACPI_TABLE_FACS: |
| 412 | acpi_gbl_FACS = NULL; |
| 413 | break; |
| 414 | |
| 415 | case ACPI_TABLE_XSDT: |
| 416 | acpi_gbl_XSDT = NULL; |
| 417 | break; |
| 418 | |
| 419 | case ACPI_TABLE_SSDT: |
| 420 | case ACPI_TABLE_PSDT: |
| 421 | default: |
| 422 | break; |
| 423 | } |
| 424 | |
| 425 | /* |
| 426 | * Free the table |
| 427 | * 1) Get the head of the list |
| 428 | */ |
| 429 | table_desc = acpi_gbl_table_lists[type].next; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 430 | count = acpi_gbl_table_lists[type].count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | /* |
| 433 | * 2) Walk the entire list, deleting both the allocated tables |
| 434 | * and the table descriptors |
| 435 | */ |
| 436 | for (i = 0; i < count; i++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 437 | table_desc = acpi_tb_uninstall_table(table_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | } |
| 439 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 440 | (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | return_VOID; |
| 442 | } |
| 443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | /******************************************************************************* |
| 445 | * |
| 446 | * FUNCTION: acpi_tb_delete_single_table |
| 447 | * |
| 448 | * PARAMETERS: table_info - A table info struct |
| 449 | * |
| 450 | * RETURN: None. |
| 451 | * |
| 452 | * DESCRIPTION: Low-level free for a single ACPI table. Handles cases where |
| 453 | * the table was allocated a buffer or was mapped. |
| 454 | * |
| 455 | ******************************************************************************/ |
| 456 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 457 | void acpi_tb_delete_single_table(struct acpi_table_desc *table_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | { |
| 459 | |
| 460 | /* Must have a valid table descriptor and pointer */ |
| 461 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 462 | if ((!table_desc) || (!table_desc->pointer)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | return; |
| 464 | } |
| 465 | |
| 466 | /* Valid table, determine type of memory allocation */ |
| 467 | |
| 468 | switch (table_desc->allocation) { |
| 469 | case ACPI_MEM_NOT_ALLOCATED: |
| 470 | break; |
| 471 | |
| 472 | case ACPI_MEM_ALLOCATED: |
| 473 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 474 | ACPI_MEM_FREE(table_desc->pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | break; |
| 476 | |
| 477 | case ACPI_MEM_MAPPED: |
| 478 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 479 | acpi_os_unmap_memory(table_desc->pointer, table_desc->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | break; |
| 481 | |
| 482 | default: |
| 483 | break; |
| 484 | } |
| 485 | } |
| 486 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | /******************************************************************************* |
| 488 | * |
| 489 | * FUNCTION: acpi_tb_uninstall_table |
| 490 | * |
| 491 | * PARAMETERS: table_info - A table info struct |
| 492 | * |
| 493 | * RETURN: Pointer to the next table in the list (of same type) |
| 494 | * |
| 495 | * DESCRIPTION: Free the memory associated with an internal ACPI table that |
| 496 | * is either installed or has never been installed. |
| 497 | * Table mutex should be locked. |
| 498 | * |
| 499 | ******************************************************************************/ |
| 500 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 501 | struct acpi_table_desc *acpi_tb_uninstall_table(struct acpi_table_desc |
| 502 | *table_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 504 | struct acpi_table_desc *next_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 506 | ACPI_FUNCTION_TRACE_PTR("tb_uninstall_table", table_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | |
| 508 | if (!table_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 509 | return_PTR(NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | /* Unlink the descriptor from the doubly linked list */ |
| 513 | |
| 514 | if (table_desc->prev) { |
| 515 | table_desc->prev->next = table_desc->next; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 516 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | /* Is first on list, update list head */ |
| 518 | |
| 519 | acpi_gbl_table_lists[table_desc->type].next = table_desc->next; |
| 520 | } |
| 521 | |
| 522 | if (table_desc->next) { |
| 523 | table_desc->next->prev = table_desc->prev; |
| 524 | } |
| 525 | |
| 526 | /* Free the memory allocated for the table itself */ |
| 527 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 528 | acpi_tb_delete_single_table(table_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
| 530 | /* Free the table descriptor */ |
| 531 | |
| 532 | next_desc = table_desc->next; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 533 | ACPI_MEM_FREE(table_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | /* Return pointer to the next descriptor */ |
| 536 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 537 | return_PTR(next_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | } |