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 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -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 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 103 | table_info.type = ACPI_TABLE_ID_SSDT; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 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) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 113 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 114 | /* Table already exists, just return the handle */ |
| 115 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 116 | return_ACPI_STATUS(AE_OK); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 117 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | goto cleanup; |
| 119 | } |
| 120 | |
| 121 | /* Add the table to the namespace */ |
| 122 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 123 | status = acpi_ns_load_table(table_info.installed_desc, parent_node); |
| 124 | if (ACPI_FAILURE(status)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | /* Uninstall table on error */ |
| 127 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 128 | (void)acpi_tb_uninstall_table(table_info.installed_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | goto cleanup; |
| 130 | } |
| 131 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 132 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 134 | cleanup: |
| 135 | acpi_ut_remove_reference(obj_desc); |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 136 | *ddb_handle = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 137 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | } |
| 139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | /******************************************************************************* |
| 141 | * |
| 142 | * FUNCTION: acpi_ex_load_table_op |
| 143 | * |
| 144 | * PARAMETERS: walk_state - Current state with operands |
| 145 | * return_desc - Where to store the return object |
| 146 | * |
| 147 | * RETURN: Status |
| 148 | * |
| 149 | * DESCRIPTION: Load an ACPI table |
| 150 | * |
| 151 | ******************************************************************************/ |
| 152 | |
| 153 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 154 | acpi_ex_load_table_op(struct acpi_walk_state *walk_state, |
| 155 | union acpi_operand_object **return_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 157 | acpi_status status; |
| 158 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 159 | struct acpi_table_header *table; |
| 160 | struct acpi_namespace_node *parent_node; |
| 161 | struct acpi_namespace_node *start_node; |
| 162 | struct acpi_namespace_node *parameter_node = NULL; |
| 163 | union acpi_operand_object *ddb_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 165 | ACPI_FUNCTION_TRACE(ex_load_table_op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
| 167 | #if 0 |
| 168 | /* |
| 169 | * Make sure that the signature does not match one of the tables that |
| 170 | * is already loaded. |
| 171 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 172 | status = acpi_tb_match_signature(operand[0]->string.pointer, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | if (status == AE_OK) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | /* Signature matched -- don't allow override */ |
| 176 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 177 | return_ACPI_STATUS(AE_ALREADY_EXISTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | } |
| 179 | #endif |
| 180 | |
| 181 | /* Find the ACPI table */ |
| 182 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 183 | status = acpi_tb_find_table(operand[0]->string.pointer, |
| 184 | operand[1]->string.pointer, |
| 185 | operand[2]->string.pointer, &table); |
| 186 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | if (status != AE_NOT_FOUND) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 188 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | /* Table not found, return an Integer=0 and AE_OK */ |
| 192 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 193 | ddb_handle = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | if (!ddb_handle) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 195 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | } |
| 197 | |
| 198 | ddb_handle->integer.value = 0; |
| 199 | *return_desc = ddb_handle; |
| 200 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 201 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | /* Default nodes */ |
| 205 | |
| 206 | start_node = walk_state->scope_info->scope.node; |
| 207 | parent_node = acpi_gbl_root_node; |
| 208 | |
| 209 | /* root_path (optional parameter) */ |
| 210 | |
| 211 | if (operand[3]->string.length > 0) { |
| 212 | /* |
| 213 | * Find the node referenced by the root_path_string. This is the |
| 214 | * location within the namespace where the table will be loaded. |
| 215 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 216 | status = |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 217 | acpi_ns_get_node(start_node, operand[3]->string.pointer, |
| 218 | ACPI_NS_SEARCH_PARENT, &parent_node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 219 | if (ACPI_FAILURE(status)) { |
| 220 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | } |
| 223 | |
| 224 | /* parameter_path (optional parameter) */ |
| 225 | |
| 226 | if (operand[4]->string.length > 0) { |
| 227 | if ((operand[4]->string.pointer[0] != '\\') && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 228 | (operand[4]->string.pointer[0] != '^')) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | /* |
| 230 | * Path is not absolute, so it will be relative to the node |
| 231 | * referenced by the root_path_string (or the NS root if omitted) |
| 232 | */ |
| 233 | start_node = parent_node; |
| 234 | } |
| 235 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 236 | /* Find the node referenced by the parameter_path_string */ |
| 237 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 238 | status = |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 239 | acpi_ns_get_node(start_node, operand[4]->string.pointer, |
| 240 | ACPI_NS_SEARCH_PARENT, ¶meter_node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 241 | if (ACPI_FAILURE(status)) { |
| 242 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | } |
| 244 | } |
| 245 | |
| 246 | /* Load the table into the namespace */ |
| 247 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 248 | status = acpi_ex_add_table(table, parent_node, &ddb_handle); |
| 249 | if (ACPI_FAILURE(status)) { |
| 250 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | /* Parameter Data (optional) */ |
| 254 | |
| 255 | if (parameter_node) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | /* Store the parameter data into the optional parameter object */ |
| 258 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 259 | status = acpi_ex_store(operand[5], |
| 260 | ACPI_CAST_PTR(union acpi_operand_object, |
| 261 | parameter_node), |
| 262 | walk_state); |
| 263 | if (ACPI_FAILURE(status)) { |
| 264 | (void)acpi_ex_unload_table(ddb_handle); |
| 265 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | } |
| 267 | } |
| 268 | |
| 269 | *return_desc = ddb_handle; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 270 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | } |
| 272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | /******************************************************************************* |
| 274 | * |
| 275 | * FUNCTION: acpi_ex_load_op |
| 276 | * |
| 277 | * PARAMETERS: obj_desc - Region or Field where the table will be |
| 278 | * obtained |
| 279 | * Target - Where a handle to the table will be stored |
| 280 | * walk_state - Current state |
| 281 | * |
| 282 | * RETURN: Status |
| 283 | * |
| 284 | * DESCRIPTION: Load an ACPI table from a field or operation region |
| 285 | * |
| 286 | ******************************************************************************/ |
| 287 | |
| 288 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 289 | acpi_ex_load_op(union acpi_operand_object *obj_desc, |
| 290 | union acpi_operand_object *target, |
| 291 | struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 293 | acpi_status status; |
| 294 | union acpi_operand_object *ddb_handle; |
| 295 | union acpi_operand_object *buffer_desc = NULL; |
| 296 | struct acpi_table_header *table_ptr = NULL; |
| 297 | acpi_physical_address address; |
| 298 | struct acpi_table_header table_header; |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 299 | acpi_integer temp; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 300 | u32 i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 302 | ACPI_FUNCTION_TRACE(ex_load_op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
| 304 | /* Object can be either an op_region or a Field */ |
| 305 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 306 | switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | case ACPI_TYPE_REGION: |
| 308 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 309 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Region %p %s\n", |
| 310 | obj_desc, |
| 311 | acpi_ut_get_object_type_name(obj_desc))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | /* |
| 314 | * If the Region Address and Length have not been previously evaluated, |
| 315 | * evaluate them now and save the results. |
| 316 | */ |
| 317 | if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 318 | status = acpi_ds_get_region_arguments(obj_desc); |
| 319 | if (ACPI_FAILURE(status)) { |
| 320 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | } |
| 322 | } |
| 323 | |
| 324 | /* Get the base physical address of the region */ |
| 325 | |
| 326 | address = obj_desc->region.address; |
| 327 | |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 328 | /* Get part of the table header to get the table length */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
| 330 | table_header.length = 0; |
| 331 | for (i = 0; i < 8; i++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 332 | status = |
| 333 | acpi_ev_address_space_dispatch(obj_desc, ACPI_READ, |
| 334 | (acpi_physical_address) |
| 335 | (i + address), 8, |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 336 | &temp); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 337 | if (ACPI_FAILURE(status)) { |
| 338 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | } |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 340 | |
| 341 | /* Get the one valid byte of the returned 64-bit value */ |
| 342 | |
| 343 | ACPI_CAST_PTR(u8, &table_header)[i] = (u8) temp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | /* Sanity check the table length */ |
| 347 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 348 | if (table_header.length < sizeof(struct acpi_table_header)) { |
| 349 | return_ACPI_STATUS(AE_BAD_HEADER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | } |
| 351 | |
| 352 | /* Allocate a buffer for the entire table */ |
| 353 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 354 | table_ptr = ACPI_ALLOCATE(table_header.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | if (!table_ptr) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 356 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | /* Get the entire table from the op region */ |
| 360 | |
| 361 | for (i = 0; i < table_header.length; i++) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 362 | status = |
| 363 | acpi_ev_address_space_dispatch(obj_desc, ACPI_READ, |
| 364 | (acpi_physical_address) |
| 365 | (i + address), 8, |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 366 | &temp); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 367 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | goto cleanup; |
| 369 | } |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 370 | |
| 371 | /* Get the one valid byte of the returned 64-bit value */ |
| 372 | |
| 373 | ACPI_CAST_PTR(u8, table_ptr)[i] = (u8) temp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | } |
| 375 | break; |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | case ACPI_TYPE_LOCAL_REGION_FIELD: |
| 378 | case ACPI_TYPE_LOCAL_BANK_FIELD: |
| 379 | case ACPI_TYPE_LOCAL_INDEX_FIELD: |
| 380 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 381 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Field %p %s\n", |
| 382 | obj_desc, |
| 383 | acpi_ut_get_object_type_name(obj_desc))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
| 385 | /* |
| 386 | * The length of the field must be at least as large as the table. |
| 387 | * Read the entire field and thus the entire table. Buffer is |
| 388 | * allocated during the read. |
| 389 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 390 | status = |
| 391 | acpi_ex_read_data_from_field(walk_state, obj_desc, |
| 392 | &buffer_desc); |
| 393 | if (ACPI_FAILURE(status)) { |
| 394 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | } |
| 396 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 397 | table_ptr = ACPI_CAST_PTR(struct acpi_table_header, |
| 398 | buffer_desc->buffer.pointer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 400 | /* All done with the buffer_desc, delete it */ |
| 401 | |
| 402 | buffer_desc->buffer.pointer = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 403 | acpi_ut_remove_reference(buffer_desc); |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 404 | |
| 405 | /* Sanity check the table length */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 407 | if (table_ptr->length < sizeof(struct acpi_table_header)) { |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 408 | status = AE_BAD_HEADER; |
| 409 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | } |
| 411 | break; |
| 412 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 414 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | } |
| 416 | |
| 417 | /* The table must be either an SSDT or a PSDT */ |
| 418 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 419 | if ((!ACPI_COMPARE_NAME(table_ptr->signature, PSDT_SIG)) && |
| 420 | (!ACPI_COMPARE_NAME(table_ptr->signature, SSDT_SIG))) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 421 | ACPI_ERROR((AE_INFO, |
| 422 | "Table has invalid signature [%4.4s], must be SSDT or PSDT", |
| 423 | table_ptr->signature)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | status = AE_BAD_SIGNATURE; |
| 425 | goto cleanup; |
| 426 | } |
| 427 | |
| 428 | /* Install the new table into the local data structures */ |
| 429 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 430 | status = acpi_ex_add_table(table_ptr, acpi_gbl_root_node, &ddb_handle); |
| 431 | if (ACPI_FAILURE(status)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 432 | |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 433 | /* On error, table_ptr was deallocated above */ |
| 434 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 435 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | /* Store the ddb_handle into the Target operand */ |
| 439 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 440 | status = acpi_ex_store(ddb_handle, target, walk_state); |
| 441 | if (ACPI_FAILURE(status)) { |
| 442 | (void)acpi_ex_unload_table(ddb_handle); |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 443 | |
| 444 | /* table_ptr was deallocated above */ |
| 445 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 446 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | } |
| 448 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 449 | cleanup: |
| 450 | if (ACPI_FAILURE(status)) { |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 451 | ACPI_FREE(table_ptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 453 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | } |
| 455 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | /******************************************************************************* |
| 457 | * |
| 458 | * FUNCTION: acpi_ex_unload_table |
| 459 | * |
| 460 | * PARAMETERS: ddb_handle - Handle to a previously loaded table |
| 461 | * |
| 462 | * RETURN: Status |
| 463 | * |
| 464 | * DESCRIPTION: Unload an ACPI table |
| 465 | * |
| 466 | ******************************************************************************/ |
| 467 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 468 | acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 470 | acpi_status status = AE_OK; |
| 471 | union acpi_operand_object *table_desc = ddb_handle; |
| 472 | struct acpi_table_desc *table_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 474 | ACPI_FUNCTION_TRACE(ex_unload_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
| 476 | /* |
| 477 | * Validate the handle |
| 478 | * Although the handle is partially validated in acpi_ex_reconfiguration(), |
| 479 | * when it calls acpi_ex_resolve_operands(), the handle is more completely |
| 480 | * validated here. |
| 481 | */ |
| 482 | if ((!ddb_handle) || |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 483 | (ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) || |
| 484 | (ACPI_GET_OBJECT_TYPE(ddb_handle) != ACPI_TYPE_LOCAL_REFERENCE)) { |
| 485 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | } |
| 487 | |
| 488 | /* Get the actual table descriptor from the ddb_handle */ |
| 489 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 490 | table_info = (struct acpi_table_desc *)table_desc->reference.object; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
| 492 | /* |
| 493 | * Delete the entire namespace under this table Node |
| 494 | * (Offset contains the table_id) |
| 495 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 496 | acpi_ns_delete_namespace_by_owner(table_info->owner_id); |
| 497 | acpi_ut_release_owner_id(&table_info->owner_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
| 499 | /* Delete the table itself */ |
| 500 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 501 | (void)acpi_tb_uninstall_table(table_info->installed_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | |
| 503 | /* Delete the table descriptor (ddb_handle) */ |
| 504 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 505 | acpi_ut_remove_reference(table_desc); |
| 506 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | } |