Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes) |
| 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/acinterp.h> |
| 46 | #include <acpi/amlcode.h> |
| 47 | #include <acpi/acnamesp.h> |
| 48 | #include <acpi/acevents.h> |
| 49 | #include <acpi/actables.h> |
| 50 | #include <acpi/acdispat.h> |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define _COMPONENT ACPI_EXECUTER |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 53 | ACPI_MODULE_NAME("exconfig") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 55 | /* Local prototypes */ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 56 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 57 | acpi_ex_add_table(struct acpi_table_header *table, |
| 58 | struct acpi_namespace_node *parent_node, |
| 59 | union acpi_operand_object **ddb_handle); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | /******************************************************************************* |
| 62 | * |
| 63 | * FUNCTION: acpi_ex_add_table |
| 64 | * |
| 65 | * PARAMETERS: Table - Pointer to raw table |
| 66 | * parent_node - Where to load the table (scope) |
| 67 | * ddb_handle - Where to return the table handle. |
| 68 | * |
| 69 | * RETURN: Status |
| 70 | * |
| 71 | * DESCRIPTION: Common function to Install and Load an ACPI table with a |
| 72 | * returned table handle. |
| 73 | * |
| 74 | ******************************************************************************/ |
| 75 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 76 | static acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 77 | acpi_ex_add_table(struct acpi_table_header *table, |
| 78 | struct acpi_namespace_node *parent_node, |
| 79 | union acpi_operand_object **ddb_handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 81 | acpi_status status; |
| 82 | struct acpi_table_desc table_info; |
| 83 | union acpi_operand_object *obj_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 85 | ACPI_FUNCTION_TRACE("ex_add_table"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | /* Create an object to be the table handle */ |
| 88 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 89 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | if (!obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 91 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } |
| 93 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 94 | /* Init the table handle */ |
| 95 | |
| 96 | obj_desc->reference.opcode = AML_LOAD_OP; |
| 97 | *ddb_handle = obj_desc; |
| 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | /* Install the new table into the local data structures */ |
| 100 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 101 | ACPI_MEMSET(&table_info, 0, sizeof(struct acpi_table_desc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 103 | table_info.type = ACPI_TABLE_SSDT; |
| 104 | table_info.pointer = table; |
| 105 | table_info.length = (acpi_size) table->length; |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 106 | table_info.allocation = ACPI_MEM_ALLOCATED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 108 | status = acpi_tb_install_table(&table_info); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 109 | obj_desc->reference.object = table_info.installed_desc; |
| 110 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 111 | if (ACPI_FAILURE(status)) { |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 112 | if (status == AE_ALREADY_EXISTS) { |
| 113 | /* Table already exists, just return the handle */ |
| 114 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 115 | return_ACPI_STATUS(AE_OK); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 116 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | goto cleanup; |
| 118 | } |
| 119 | |
| 120 | /* Add the table to the namespace */ |
| 121 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 122 | status = acpi_ns_load_table(table_info.installed_desc, parent_node); |
| 123 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | /* Uninstall table on error */ |
| 125 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 126 | (void)acpi_tb_uninstall_table(table_info.installed_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | goto cleanup; |
| 128 | } |
| 129 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 130 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 132 | cleanup: |
| 133 | acpi_ut_remove_reference(obj_desc); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 134 | *ddb_handle = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 135 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | } |
| 137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | /******************************************************************************* |
| 139 | * |
| 140 | * FUNCTION: acpi_ex_load_table_op |
| 141 | * |
| 142 | * PARAMETERS: walk_state - Current state with operands |
| 143 | * return_desc - Where to store the return object |
| 144 | * |
| 145 | * RETURN: Status |
| 146 | * |
| 147 | * DESCRIPTION: Load an ACPI table |
| 148 | * |
| 149 | ******************************************************************************/ |
| 150 | |
| 151 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 152 | acpi_ex_load_table_op(struct acpi_walk_state *walk_state, |
| 153 | union acpi_operand_object **return_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 155 | acpi_status status; |
| 156 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 157 | struct acpi_table_header *table; |
| 158 | struct acpi_namespace_node *parent_node; |
| 159 | struct acpi_namespace_node *start_node; |
| 160 | struct acpi_namespace_node *parameter_node = NULL; |
| 161 | union acpi_operand_object *ddb_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 163 | ACPI_FUNCTION_TRACE("ex_load_table_op"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
| 165 | #if 0 |
| 166 | /* |
| 167 | * Make sure that the signature does not match one of the tables that |
| 168 | * is already loaded. |
| 169 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 170 | status = acpi_tb_match_signature(operand[0]->string.pointer, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | if (status == AE_OK) { |
| 172 | /* Signature matched -- don't allow override */ |
| 173 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 174 | return_ACPI_STATUS(AE_ALREADY_EXISTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | } |
| 176 | #endif |
| 177 | |
| 178 | /* Find the ACPI table */ |
| 179 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 180 | status = acpi_tb_find_table(operand[0]->string.pointer, |
| 181 | operand[1]->string.pointer, |
| 182 | operand[2]->string.pointer, &table); |
| 183 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | if (status != AE_NOT_FOUND) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 185 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | /* Table not found, return an Integer=0 and AE_OK */ |
| 189 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 190 | ddb_handle = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | if (!ddb_handle) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 192 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | ddb_handle->integer.value = 0; |
| 196 | *return_desc = ddb_handle; |
| 197 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 198 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | |
| 201 | /* Default nodes */ |
| 202 | |
| 203 | start_node = walk_state->scope_info->scope.node; |
| 204 | parent_node = acpi_gbl_root_node; |
| 205 | |
| 206 | /* root_path (optional parameter) */ |
| 207 | |
| 208 | if (operand[3]->string.length > 0) { |
| 209 | /* |
| 210 | * Find the node referenced by the root_path_string. This is the |
| 211 | * location within the namespace where the table will be loaded. |
| 212 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 213 | status = |
| 214 | acpi_ns_get_node_by_path(operand[3]->string.pointer, |
| 215 | start_node, ACPI_NS_SEARCH_PARENT, |
| 216 | &parent_node); |
| 217 | if (ACPI_FAILURE(status)) { |
| 218 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | } |
| 220 | } |
| 221 | |
| 222 | /* parameter_path (optional parameter) */ |
| 223 | |
| 224 | if (operand[4]->string.length > 0) { |
| 225 | if ((operand[4]->string.pointer[0] != '\\') && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 226 | (operand[4]->string.pointer[0] != '^')) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | /* |
| 228 | * Path is not absolute, so it will be relative to the node |
| 229 | * referenced by the root_path_string (or the NS root if omitted) |
| 230 | */ |
| 231 | start_node = parent_node; |
| 232 | } |
| 233 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 234 | /* Find the node referenced by the parameter_path_string */ |
| 235 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 236 | status = |
| 237 | acpi_ns_get_node_by_path(operand[4]->string.pointer, |
| 238 | start_node, ACPI_NS_SEARCH_PARENT, |
| 239 | ¶meter_node); |
| 240 | if (ACPI_FAILURE(status)) { |
| 241 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | } |
| 243 | } |
| 244 | |
| 245 | /* Load the table into the namespace */ |
| 246 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 247 | status = acpi_ex_add_table(table, parent_node, &ddb_handle); |
| 248 | if (ACPI_FAILURE(status)) { |
| 249 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | /* Parameter Data (optional) */ |
| 253 | |
| 254 | if (parameter_node) { |
| 255 | /* Store the parameter data into the optional parameter object */ |
| 256 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 257 | status = acpi_ex_store(operand[5], |
| 258 | ACPI_CAST_PTR(union acpi_operand_object, |
| 259 | parameter_node), |
| 260 | walk_state); |
| 261 | if (ACPI_FAILURE(status)) { |
| 262 | (void)acpi_ex_unload_table(ddb_handle); |
| 263 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | } |
| 265 | } |
| 266 | |
| 267 | *return_desc = ddb_handle; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 268 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | } |
| 270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | /******************************************************************************* |
| 272 | * |
| 273 | * FUNCTION: acpi_ex_load_op |
| 274 | * |
| 275 | * PARAMETERS: obj_desc - Region or Field where the table will be |
| 276 | * obtained |
| 277 | * Target - Where a handle to the table will be stored |
| 278 | * walk_state - Current state |
| 279 | * |
| 280 | * RETURN: Status |
| 281 | * |
| 282 | * DESCRIPTION: Load an ACPI table from a field or operation region |
| 283 | * |
| 284 | ******************************************************************************/ |
| 285 | |
| 286 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 287 | acpi_ex_load_op(union acpi_operand_object *obj_desc, |
| 288 | union acpi_operand_object *target, |
| 289 | struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 291 | acpi_status status; |
| 292 | union acpi_operand_object *ddb_handle; |
| 293 | union acpi_operand_object *buffer_desc = NULL; |
| 294 | struct acpi_table_header *table_ptr = NULL; |
| 295 | acpi_physical_address address; |
| 296 | struct acpi_table_header table_header; |
| 297 | u32 i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 299 | ACPI_FUNCTION_TRACE("ex_load_op"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
| 301 | /* Object can be either an op_region or a Field */ |
| 302 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 303 | switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | case ACPI_TYPE_REGION: |
| 305 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 306 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Region %p %s\n", |
| 307 | obj_desc, |
| 308 | acpi_ut_get_object_type_name(obj_desc))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
| 310 | /* |
| 311 | * If the Region Address and Length have not been previously evaluated, |
| 312 | * evaluate them now and save the results. |
| 313 | */ |
| 314 | if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 315 | status = acpi_ds_get_region_arguments(obj_desc); |
| 316 | if (ACPI_FAILURE(status)) { |
| 317 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | } |
| 319 | } |
| 320 | |
| 321 | /* Get the base physical address of the region */ |
| 322 | |
| 323 | address = obj_desc->region.address; |
| 324 | |
| 325 | /* Get the table length from the table header */ |
| 326 | |
| 327 | table_header.length = 0; |
| 328 | for (i = 0; i < 8; i++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 329 | status = |
| 330 | acpi_ev_address_space_dispatch(obj_desc, ACPI_READ, |
| 331 | (acpi_physical_address) |
| 332 | (i + address), 8, |
| 333 | ((u8 *) & |
| 334 | table_header) + i); |
| 335 | if (ACPI_FAILURE(status)) { |
| 336 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | } |
| 338 | } |
| 339 | |
| 340 | /* Sanity check the table length */ |
| 341 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 342 | if (table_header.length < sizeof(struct acpi_table_header)) { |
| 343 | return_ACPI_STATUS(AE_BAD_HEADER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | /* Allocate a buffer for the entire table */ |
| 347 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 348 | table_ptr = ACPI_MEM_ALLOCATE(table_header.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | if (!table_ptr) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 350 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | /* Get the entire table from the op region */ |
| 354 | |
| 355 | for (i = 0; i < table_header.length; i++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 356 | status = |
| 357 | acpi_ev_address_space_dispatch(obj_desc, ACPI_READ, |
| 358 | (acpi_physical_address) |
| 359 | (i + address), 8, |
| 360 | ((u8 *) table_ptr + |
| 361 | i)); |
| 362 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | goto cleanup; |
| 364 | } |
| 365 | } |
| 366 | break; |
| 367 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | case ACPI_TYPE_LOCAL_REGION_FIELD: |
| 369 | case ACPI_TYPE_LOCAL_BANK_FIELD: |
| 370 | case ACPI_TYPE_LOCAL_INDEX_FIELD: |
| 371 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 372 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Field %p %s\n", |
| 373 | obj_desc, |
| 374 | acpi_ut_get_object_type_name(obj_desc))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
| 376 | /* |
| 377 | * The length of the field must be at least as large as the table. |
| 378 | * Read the entire field and thus the entire table. Buffer is |
| 379 | * allocated during the read. |
| 380 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 381 | status = |
| 382 | acpi_ex_read_data_from_field(walk_state, obj_desc, |
| 383 | &buffer_desc); |
| 384 | if (ACPI_FAILURE(status)) { |
| 385 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | } |
| 387 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 388 | table_ptr = ACPI_CAST_PTR(struct acpi_table_header, |
| 389 | buffer_desc->buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 391 | /* All done with the buffer_desc, delete it */ |
| 392 | |
| 393 | buffer_desc->buffer.pointer = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 394 | acpi_ut_remove_reference(buffer_desc); |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 395 | |
| 396 | /* Sanity check the table length */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 398 | if (table_ptr->length < sizeof(struct acpi_table_header)) { |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 399 | status = AE_BAD_HEADER; |
| 400 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | } |
| 402 | break; |
| 403 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 405 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } |
| 407 | |
| 408 | /* The table must be either an SSDT or a PSDT */ |
| 409 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 410 | if ((!ACPI_STRNCMP(table_ptr->signature, |
| 411 | acpi_gbl_table_data[ACPI_TABLE_PSDT].signature, |
| 412 | acpi_gbl_table_data[ACPI_TABLE_PSDT].sig_length)) && |
| 413 | (!ACPI_STRNCMP(table_ptr->signature, |
| 414 | acpi_gbl_table_data[ACPI_TABLE_SSDT].signature, |
| 415 | acpi_gbl_table_data[ACPI_TABLE_SSDT].sig_length))) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 416 | ACPI_ERROR((AE_INFO, |
| 417 | "Table has invalid signature [%4.4s], must be SSDT or PSDT", |
| 418 | table_ptr->signature)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | status = AE_BAD_SIGNATURE; |
| 420 | goto cleanup; |
| 421 | } |
| 422 | |
| 423 | /* Install the new table into the local data structures */ |
| 424 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 425 | status = acpi_ex_add_table(table_ptr, acpi_gbl_root_node, &ddb_handle); |
| 426 | if (ACPI_FAILURE(status)) { |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 427 | /* On error, table_ptr was deallocated above */ |
| 428 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 429 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
| 431 | |
| 432 | /* Store the ddb_handle into the Target operand */ |
| 433 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 434 | status = acpi_ex_store(ddb_handle, target, walk_state); |
| 435 | if (ACPI_FAILURE(status)) { |
| 436 | (void)acpi_ex_unload_table(ddb_handle); |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 437 | |
| 438 | /* table_ptr was deallocated above */ |
| 439 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 440 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | } |
| 442 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 443 | cleanup: |
| 444 | if (ACPI_FAILURE(status)) { |
| 445 | ACPI_MEM_FREE(table_ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 447 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | } |
| 449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | /******************************************************************************* |
| 451 | * |
| 452 | * FUNCTION: acpi_ex_unload_table |
| 453 | * |
| 454 | * PARAMETERS: ddb_handle - Handle to a previously loaded table |
| 455 | * |
| 456 | * RETURN: Status |
| 457 | * |
| 458 | * DESCRIPTION: Unload an ACPI table |
| 459 | * |
| 460 | ******************************************************************************/ |
| 461 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 462 | acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 464 | acpi_status status = AE_OK; |
| 465 | union acpi_operand_object *table_desc = ddb_handle; |
| 466 | struct acpi_table_desc *table_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 468 | ACPI_FUNCTION_TRACE("ex_unload_table"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | |
| 470 | /* |
| 471 | * Validate the handle |
| 472 | * Although the handle is partially validated in acpi_ex_reconfiguration(), |
| 473 | * when it calls acpi_ex_resolve_operands(), the handle is more completely |
| 474 | * validated here. |
| 475 | */ |
| 476 | if ((!ddb_handle) || |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 477 | (ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) || |
| 478 | (ACPI_GET_OBJECT_TYPE(ddb_handle) != ACPI_TYPE_LOCAL_REFERENCE)) { |
| 479 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | } |
| 481 | |
| 482 | /* Get the actual table descriptor from the ddb_handle */ |
| 483 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 484 | table_info = (struct acpi_table_desc *)table_desc->reference.object; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
| 486 | /* |
| 487 | * Delete the entire namespace under this table Node |
| 488 | * (Offset contains the table_id) |
| 489 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 490 | acpi_ns_delete_namespace_by_owner(table_info->owner_id); |
| 491 | acpi_ut_release_owner_id(&table_info->owner_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | |
| 493 | /* Delete the table itself */ |
| 494 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 495 | (void)acpi_tb_uninstall_table(table_info->installed_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | |
| 497 | /* Delete the table descriptor (ddb_handle) */ |
| 498 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 499 | acpi_ut_remove_reference(table_desc); |
| 500 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | } |