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 | 6c9deb7 | 2007-02-02 19:48:24 +0300 | [diff] [blame^] | 8 | * Copyright (C) 2000 - 2007, 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 |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 57 | acpi_ex_add_table(acpi_native_uint table_index, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 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 |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 77 | acpi_ex_add_table(acpi_native_uint table_index, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 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; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 82 | union acpi_operand_object *obj_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 84 | ACPI_FUNCTION_TRACE(ex_add_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
| 86 | /* Create an object to be the table handle */ |
| 87 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 88 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | if (!obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 90 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | } |
| 92 | |
Robert Moore | 0c9938c | 2005-07-29 15:15:00 -0700 | [diff] [blame] | 93 | /* Init the table handle */ |
| 94 | |
| 95 | obj_desc->reference.opcode = AML_LOAD_OP; |
| 96 | *ddb_handle = obj_desc; |
| 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | /* Install the new table into the local data structures */ |
| 99 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 100 | obj_desc->reference.object = ACPI_CAST_PTR(void, table_index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
| 102 | /* Add the table to the namespace */ |
| 103 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 104 | status = acpi_ns_load_table(table_index, parent_node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 105 | if (ACPI_FAILURE(status)) { |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 106 | acpi_ut_remove_reference(obj_desc); |
| 107 | *ddb_handle = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | } |
| 109 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 110 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | } |
| 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | /******************************************************************************* |
| 114 | * |
| 115 | * FUNCTION: acpi_ex_load_table_op |
| 116 | * |
| 117 | * PARAMETERS: walk_state - Current state with operands |
| 118 | * return_desc - Where to store the return object |
| 119 | * |
| 120 | * RETURN: Status |
| 121 | * |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 122 | * DESCRIPTION: Load an ACPI table from the RSDT/XSDT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | * |
| 124 | ******************************************************************************/ |
| 125 | |
| 126 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 127 | acpi_ex_load_table_op(struct acpi_walk_state *walk_state, |
| 128 | union acpi_operand_object **return_desc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 130 | acpi_status status; |
| 131 | union acpi_operand_object **operand = &walk_state->operands[0]; |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 132 | acpi_native_uint table_index; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 133 | struct acpi_namespace_node *parent_node; |
| 134 | struct acpi_namespace_node *start_node; |
| 135 | struct acpi_namespace_node *parameter_node = NULL; |
| 136 | union acpi_operand_object *ddb_handle; |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 137 | struct acpi_table_header *table; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 139 | ACPI_FUNCTION_TRACE(ex_load_table_op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 141 | /* Find the ACPI table in the RSDT/XSDT */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 143 | status = acpi_tb_find_table(operand[0]->string.pointer, |
| 144 | operand[1]->string.pointer, |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 145 | operand[2]->string.pointer, &table_index); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 146 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | if (status != AE_NOT_FOUND) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 148 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | } |
| 150 | |
| 151 | /* Table not found, return an Integer=0 and AE_OK */ |
| 152 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 153 | ddb_handle = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | if (!ddb_handle) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 155 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | ddb_handle->integer.value = 0; |
| 159 | *return_desc = ddb_handle; |
| 160 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 161 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | /* Default nodes */ |
| 165 | |
| 166 | start_node = walk_state->scope_info->scope.node; |
| 167 | parent_node = acpi_gbl_root_node; |
| 168 | |
| 169 | /* root_path (optional parameter) */ |
| 170 | |
| 171 | if (operand[3]->string.length > 0) { |
| 172 | /* |
| 173 | * Find the node referenced by the root_path_string. This is the |
| 174 | * location within the namespace where the table will be loaded. |
| 175 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 176 | status = |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 177 | acpi_ns_get_node(start_node, operand[3]->string.pointer, |
| 178 | ACPI_NS_SEARCH_PARENT, &parent_node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 179 | if (ACPI_FAILURE(status)) { |
| 180 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | } |
| 182 | } |
| 183 | |
| 184 | /* parameter_path (optional parameter) */ |
| 185 | |
| 186 | if (operand[4]->string.length > 0) { |
| 187 | if ((operand[4]->string.pointer[0] != '\\') && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 188 | (operand[4]->string.pointer[0] != '^')) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | /* |
| 190 | * Path is not absolute, so it will be relative to the node |
| 191 | * referenced by the root_path_string (or the NS root if omitted) |
| 192 | */ |
| 193 | start_node = parent_node; |
| 194 | } |
| 195 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 196 | /* Find the node referenced by the parameter_path_string */ |
| 197 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 198 | status = |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 199 | acpi_ns_get_node(start_node, operand[4]->string.pointer, |
| 200 | ACPI_NS_SEARCH_PARENT, ¶meter_node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 201 | if (ACPI_FAILURE(status)) { |
| 202 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | } |
| 204 | } |
| 205 | |
| 206 | /* Load the table into the namespace */ |
| 207 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 208 | status = acpi_ex_add_table(table_index, parent_node, &ddb_handle); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 209 | if (ACPI_FAILURE(status)) { |
| 210 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | /* Parameter Data (optional) */ |
| 214 | |
| 215 | if (parameter_node) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | /* Store the parameter data into the optional parameter object */ |
| 218 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 219 | status = acpi_ex_store(operand[5], |
| 220 | ACPI_CAST_PTR(union acpi_operand_object, |
| 221 | parameter_node), |
| 222 | walk_state); |
| 223 | if (ACPI_FAILURE(status)) { |
| 224 | (void)acpi_ex_unload_table(ddb_handle); |
| 225 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | } |
| 227 | } |
| 228 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 229 | status = acpi_get_table_by_index(table_index, &table); |
| 230 | if (ACPI_SUCCESS(status)) { |
| 231 | ACPI_INFO((AE_INFO, |
| 232 | "Dynamic OEM Table Load - [%4.4s] OemId [%6.6s] OemTableId [%8.8s]", |
| 233 | table->signature, table->oem_id, |
| 234 | table->oem_table_id)); |
| 235 | } |
Bob Moore | 967440e3 | 2006-06-23 17:04:00 -0400 | [diff] [blame] | 236 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | *return_desc = ddb_handle; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 238 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | /******************************************************************************* |
| 242 | * |
| 243 | * FUNCTION: acpi_ex_load_op |
| 244 | * |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 245 | * PARAMETERS: obj_desc - Region or Buffer/Field where the table will be |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | * obtained |
| 247 | * Target - Where a handle to the table will be stored |
| 248 | * walk_state - Current state |
| 249 | * |
| 250 | * RETURN: Status |
| 251 | * |
| 252 | * DESCRIPTION: Load an ACPI table from a field or operation region |
| 253 | * |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 254 | * NOTE: Region Fields (Field, bank_field, index_fields) are resolved to buffer |
| 255 | * objects before this code is reached. |
| 256 | * |
| 257 | * If source is an operation region, it must refer to system_memory, as |
| 258 | * per the ACPI specification. |
| 259 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | ******************************************************************************/ |
| 261 | |
| 262 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 263 | acpi_ex_load_op(union acpi_operand_object *obj_desc, |
| 264 | union acpi_operand_object *target, |
| 265 | struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 267 | union acpi_operand_object *ddb_handle; |
Alexey Starikovskiy | 428f211 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 268 | struct acpi_table_desc table_desc; |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 269 | acpi_native_uint table_index; |
| 270 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 272 | ACPI_FUNCTION_TRACE(ex_load_op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
Alexey Starikovskiy | 428f211 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 274 | ACPI_MEMSET(&table_desc, 0, sizeof(struct acpi_table_desc)); |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 275 | |
| 276 | /* Source Object can be either an op_region or a Buffer/Field */ |
| 277 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 278 | switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | case ACPI_TYPE_REGION: |
| 280 | |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 281 | /* Region must be system_memory (from ACPI spec) */ |
| 282 | |
| 283 | if (obj_desc->region.space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) { |
| 284 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
| 285 | } |
| 286 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 287 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Region %p %s\n", |
| 288 | obj_desc, |
| 289 | acpi_ut_get_object_type_name(obj_desc))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | |
| 291 | /* |
| 292 | * If the Region Address and Length have not been previously evaluated, |
| 293 | * evaluate them now and save the results. |
| 294 | */ |
| 295 | if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 296 | status = acpi_ds_get_region_arguments(obj_desc); |
| 297 | if (ACPI_FAILURE(status)) { |
| 298 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | } |
| 300 | } |
| 301 | |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 302 | table_desc.address = obj_desc->region.address; |
| 303 | table_desc.length = obj_desc->region.length; |
| 304 | table_desc.flags = ACPI_TABLE_ORIGIN_MAPPED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | break; |
| 306 | |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 307 | case ACPI_TYPE_BUFFER: /* Buffer or resolved region_field */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 309 | /* Simply extract the buffer from the buffer object */ |
| 310 | |
| 311 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, |
| 312 | "Load from Buffer or Field %p %s\n", obj_desc, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 313 | acpi_ut_get_object_type_name(obj_desc))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 315 | table_desc.pointer = ACPI_CAST_PTR(struct acpi_table_header, |
| 316 | obj_desc->buffer.pointer); |
| 317 | table_desc.length = table_desc.pointer->length; |
| 318 | table_desc.flags = ACPI_TABLE_ORIGIN_ALLOCATED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 320 | obj_desc->buffer.pointer = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | break; |
| 322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | default: |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 324 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | } |
| 326 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 327 | /* |
| 328 | * Install the new table into the local data structures |
| 329 | */ |
Alexey Starikovskiy | 428f211 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 330 | status = acpi_tb_add_table(&table_desc, &table_index); |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 331 | if (ACPI_FAILURE(status)) { |
Bob Moore | 0fab899 | 2007-02-02 19:48:20 +0300 | [diff] [blame] | 332 | goto cleanup; |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 333 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 335 | status = |
| 336 | acpi_ex_add_table(table_index, acpi_gbl_root_node, &ddb_handle); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 337 | if (ACPI_FAILURE(status)) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 338 | |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 339 | /* On error, table_ptr was deallocated above */ |
| 340 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 341 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | } |
| 343 | |
| 344 | /* Store the ddb_handle into the Target operand */ |
| 345 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 346 | status = acpi_ex_store(ddb_handle, target, walk_state); |
| 347 | if (ACPI_FAILURE(status)) { |
| 348 | (void)acpi_ex_unload_table(ddb_handle); |
Robert Moore | 88ac00f | 2005-05-26 00:00:00 -0400 | [diff] [blame] | 349 | |
| 350 | /* table_ptr was deallocated above */ |
| 351 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 352 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | } |
| 354 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 355 | cleanup: |
| 356 | if (ACPI_FAILURE(status)) { |
Alexey Starikovskiy | a6823e1 | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 357 | acpi_tb_delete_table(&table_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 359 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | } |
| 361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | /******************************************************************************* |
| 363 | * |
| 364 | * FUNCTION: acpi_ex_unload_table |
| 365 | * |
| 366 | * PARAMETERS: ddb_handle - Handle to a previously loaded table |
| 367 | * |
| 368 | * RETURN: Status |
| 369 | * |
| 370 | * DESCRIPTION: Unload an ACPI table |
| 371 | * |
| 372 | ******************************************************************************/ |
| 373 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 374 | acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 376 | acpi_status status = AE_OK; |
| 377 | union acpi_operand_object *table_desc = ddb_handle; |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 378 | acpi_native_uint table_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 380 | ACPI_FUNCTION_TRACE(ex_unload_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | |
| 382 | /* |
| 383 | * Validate the handle |
| 384 | * Although the handle is partially validated in acpi_ex_reconfiguration(), |
| 385 | * when it calls acpi_ex_resolve_operands(), the handle is more completely |
| 386 | * validated here. |
| 387 | */ |
| 388 | if ((!ddb_handle) || |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 389 | (ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) || |
| 390 | (ACPI_GET_OBJECT_TYPE(ddb_handle) != ACPI_TYPE_LOCAL_REFERENCE)) { |
| 391 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | } |
| 393 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 394 | /* Get the table index from the ddb_handle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 396 | table_index = (acpi_native_uint) table_desc->reference.object; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
| 398 | /* |
| 399 | * Delete the entire namespace under this table Node |
| 400 | * (Offset contains the table_id) |
| 401 | */ |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 402 | acpi_tb_delete_namespace_by_owner(table_index); |
| 403 | acpi_tb_release_owner_id(table_index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
Bob Moore | f3d2e78 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 405 | acpi_tb_set_table_loaded_flag(table_index, FALSE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | /* Delete the table descriptor (ddb_handle) */ |
| 408 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 409 | acpi_ut_remove_reference(table_desc); |
| 410 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | } |