Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: excreate - Named object creation |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2005, R. Byron Moore |
| 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #define _COMPONENT ACPI_EXECUTER |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 52 | ACPI_MODULE_NAME("excreate") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | #ifndef ACPI_NO_METHOD_EXECUTION |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 55 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | * |
| 57 | * FUNCTION: acpi_ex_create_alias |
| 58 | * |
| 59 | * PARAMETERS: walk_state - Current state, contains operands |
| 60 | * |
| 61 | * RETURN: Status |
| 62 | * |
| 63 | * DESCRIPTION: Create a new named alias |
| 64 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 65 | ******************************************************************************/ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 66 | acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 68 | struct acpi_namespace_node *target_node; |
| 69 | struct acpi_namespace_node *alias_node; |
| 70 | acpi_status status = AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 72 | ACPI_FUNCTION_TRACE("ex_create_alias"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
| 74 | /* Get the source/alias operands (both namespace nodes) */ |
| 75 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 76 | alias_node = (struct acpi_namespace_node *)walk_state->operands[0]; |
| 77 | target_node = (struct acpi_namespace_node *)walk_state->operands[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) || |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 80 | (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | /* |
| 82 | * Dereference an existing alias so that we don't create a chain |
| 83 | * of aliases. With this code, we guarantee that an alias is |
| 84 | * always exactly one level of indirection away from the |
| 85 | * actual aliased name. |
| 86 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 87 | target_node = |
| 88 | ACPI_CAST_PTR(struct acpi_namespace_node, |
| 89 | target_node->object); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | /* |
| 93 | * For objects that can never change (i.e., the NS node will |
| 94 | * permanently point to the same object), we can simply attach |
| 95 | * the object to the new NS node. For other objects (such as |
| 96 | * Integers, buffers, etc.), we have to point the Alias node |
| 97 | * to the original Node. |
| 98 | */ |
| 99 | switch (target_node->type) { |
| 100 | case ACPI_TYPE_INTEGER: |
| 101 | case ACPI_TYPE_STRING: |
| 102 | case ACPI_TYPE_BUFFER: |
| 103 | case ACPI_TYPE_PACKAGE: |
| 104 | case ACPI_TYPE_BUFFER_FIELD: |
| 105 | |
| 106 | /* |
| 107 | * The new alias has the type ALIAS and points to the original |
| 108 | * NS node, not the object itself. This is because for these |
| 109 | * types, the object can change dynamically via a Store. |
| 110 | */ |
| 111 | alias_node->type = ACPI_TYPE_LOCAL_ALIAS; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 112 | alias_node->object = |
| 113 | ACPI_CAST_PTR(union acpi_operand_object, target_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | break; |
| 115 | |
| 116 | case ACPI_TYPE_METHOD: |
| 117 | |
| 118 | /* |
| 119 | * The new alias has the type ALIAS and points to the original |
| 120 | * NS node, not the object itself. This is because for these |
| 121 | * types, the object can change dynamically via a Store. |
| 122 | */ |
| 123 | alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 124 | alias_node->object = |
| 125 | ACPI_CAST_PTR(union acpi_operand_object, target_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | break; |
| 127 | |
| 128 | default: |
| 129 | |
| 130 | /* Attach the original source object to the new Alias Node */ |
| 131 | |
| 132 | /* |
| 133 | * The new alias assumes the type of the target, and it points |
| 134 | * to the same object. The reference count of the object has an |
| 135 | * additional reference to prevent deletion out from under either the |
| 136 | * target node or the alias Node |
| 137 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 138 | status = acpi_ns_attach_object(alias_node, |
| 139 | acpi_ns_get_attached_object |
| 140 | (target_node), |
| 141 | target_node->type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | break; |
| 143 | } |
| 144 | |
| 145 | /* Since both operands are Nodes, we don't need to delete them */ |
| 146 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 147 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | } |
| 149 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 150 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | * |
| 152 | * FUNCTION: acpi_ex_create_event |
| 153 | * |
| 154 | * PARAMETERS: walk_state - Current state |
| 155 | * |
| 156 | * RETURN: Status |
| 157 | * |
| 158 | * DESCRIPTION: Create a new event object |
| 159 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 160 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 162 | acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 164 | acpi_status status; |
| 165 | union acpi_operand_object *obj_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 167 | ACPI_FUNCTION_TRACE("ex_create_event"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 169 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | if (!obj_desc) { |
| 171 | status = AE_NO_MEMORY; |
| 172 | goto cleanup; |
| 173 | } |
| 174 | |
| 175 | /* |
| 176 | * Create the actual OS semaphore, with zero initial units -- meaning |
| 177 | * that the event is created in an unsignalled state |
| 178 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 179 | status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, |
| 180 | &obj_desc->event.semaphore); |
| 181 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | goto cleanup; |
| 183 | } |
| 184 | |
| 185 | /* Attach object to the Node */ |
| 186 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 187 | status = |
| 188 | acpi_ns_attach_object((struct acpi_namespace_node *)walk_state-> |
| 189 | operands[0], obj_desc, ACPI_TYPE_EVENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 191 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | /* |
| 193 | * Remove local reference to the object (on error, will cause deletion |
| 194 | * of both object and semaphore if present.) |
| 195 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 196 | acpi_ut_remove_reference(obj_desc); |
| 197 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | } |
| 199 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 200 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | * |
| 202 | * FUNCTION: acpi_ex_create_mutex |
| 203 | * |
| 204 | * PARAMETERS: walk_state - Current state |
| 205 | * |
| 206 | * RETURN: Status |
| 207 | * |
| 208 | * DESCRIPTION: Create a new mutex object |
| 209 | * |
| 210 | * Mutex (Name[0], sync_level[1]) |
| 211 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 212 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 214 | acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 216 | acpi_status status = AE_OK; |
| 217 | union acpi_operand_object *obj_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 219 | ACPI_FUNCTION_TRACE_PTR("ex_create_mutex", ACPI_WALK_OPERANDS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | /* Create the new mutex object */ |
| 222 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 223 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | if (!obj_desc) { |
| 225 | status = AE_NO_MEMORY; |
| 226 | goto cleanup; |
| 227 | } |
| 228 | |
| 229 | /* |
| 230 | * Create the actual OS semaphore. |
| 231 | * One unit max to make it a mutex, with one initial unit to allow |
| 232 | * the mutex to be acquired. |
| 233 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 234 | status = acpi_os_create_semaphore(1, 1, &obj_desc->mutex.semaphore); |
| 235 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | goto cleanup; |
| 237 | } |
| 238 | |
| 239 | /* Init object and attach to NS node */ |
| 240 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 241 | obj_desc->mutex.sync_level = |
| 242 | (u8) walk_state->operands[1]->integer.value; |
| 243 | obj_desc->mutex.node = |
| 244 | (struct acpi_namespace_node *)walk_state->operands[0]; |
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 | status = acpi_ns_attach_object(obj_desc->mutex.node, |
| 247 | obj_desc, ACPI_TYPE_MUTEX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 249 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | /* |
| 251 | * Remove local reference to the object (on error, will cause deletion |
| 252 | * of both object and semaphore if present.) |
| 253 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 254 | acpi_ut_remove_reference(obj_desc); |
| 255 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 258 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | * |
| 260 | * FUNCTION: acpi_ex_create_region |
| 261 | * |
| 262 | * PARAMETERS: aml_start - Pointer to the region declaration AML |
| 263 | * aml_length - Max length of the declaration AML |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 264 | * region_space - space_iD for the region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | * walk_state - Current state |
| 266 | * |
| 267 | * RETURN: Status |
| 268 | * |
| 269 | * DESCRIPTION: Create a new operation region object |
| 270 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 271 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
| 273 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 274 | acpi_ex_create_region(u8 * aml_start, |
| 275 | u32 aml_length, |
| 276 | u8 region_space, struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 278 | acpi_status status; |
| 279 | union acpi_operand_object *obj_desc; |
| 280 | struct acpi_namespace_node *node; |
| 281 | union acpi_operand_object *region_obj2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 283 | ACPI_FUNCTION_TRACE("ex_create_region"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
| 285 | /* Get the Namespace Node */ |
| 286 | |
| 287 | node = walk_state->op->common.node; |
| 288 | |
| 289 | /* |
| 290 | * If the region object is already attached to this node, |
| 291 | * just return |
| 292 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 293 | if (acpi_ns_get_attached_object(node)) { |
| 294 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | } |
| 296 | |
| 297 | /* |
| 298 | * Space ID must be one of the predefined IDs, or in the user-defined |
| 299 | * range |
| 300 | */ |
| 301 | if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 302 | (region_space < ACPI_USER_REGION_BEGIN)) { |
| 303 | ACPI_REPORT_ERROR(("Invalid address_space type %X\n", |
| 304 | region_space)); |
| 305 | return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | } |
| 307 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 308 | ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (%X)\n", |
| 309 | acpi_ut_get_region_name(region_space), region_space)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | |
| 311 | /* Create the region descriptor */ |
| 312 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 313 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | if (!obj_desc) { |
| 315 | status = AE_NO_MEMORY; |
| 316 | goto cleanup; |
| 317 | } |
| 318 | |
| 319 | /* |
| 320 | * Remember location in AML stream of address & length |
| 321 | * operands since they need to be evaluated at run time. |
| 322 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 323 | region_obj2 = obj_desc->common.next_object; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | region_obj2->extra.aml_start = aml_start; |
| 325 | region_obj2->extra.aml_length = aml_length; |
| 326 | |
| 327 | /* Init the region from the operands */ |
| 328 | |
| 329 | obj_desc->region.space_id = region_space; |
| 330 | obj_desc->region.address = 0; |
| 331 | obj_desc->region.length = 0; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 332 | obj_desc->region.node = node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
| 334 | /* Install the new region object in the parent Node */ |
| 335 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 336 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 338 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
| 340 | /* Remove local reference to the object */ |
| 341 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 342 | acpi_ut_remove_reference(obj_desc); |
| 343 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | } |
| 345 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 346 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | * |
| 348 | * FUNCTION: acpi_ex_create_table_region |
| 349 | * |
| 350 | * PARAMETERS: walk_state - Current state |
| 351 | * |
| 352 | * RETURN: Status |
| 353 | * |
| 354 | * DESCRIPTION: Create a new data_table_region object |
| 355 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 356 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 358 | acpi_status acpi_ex_create_table_region(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 360 | acpi_status status; |
| 361 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 362 | union acpi_operand_object *obj_desc; |
| 363 | struct acpi_namespace_node *node; |
| 364 | struct acpi_table_header *table; |
| 365 | union acpi_operand_object *region_obj2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 367 | ACPI_FUNCTION_TRACE("ex_create_table_region"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
| 369 | /* Get the Node from the object stack */ |
| 370 | |
| 371 | node = walk_state->op->common.node; |
| 372 | |
| 373 | /* |
| 374 | * If the region object is already attached to this node, |
| 375 | * just return |
| 376 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 377 | if (acpi_ns_get_attached_object(node)) { |
| 378 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | /* Find the ACPI table */ |
| 382 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 383 | status = acpi_tb_find_table(operand[1]->string.pointer, |
| 384 | operand[2]->string.pointer, |
| 385 | operand[3]->string.pointer, &table); |
| 386 | if (ACPI_FAILURE(status)) { |
| 387 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | /* Create the region descriptor */ |
| 391 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 392 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | if (!obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 394 | return_ACPI_STATUS(AE_NO_MEMORY); |
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 | region_obj2 = obj_desc->common.next_object; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | region_obj2->extra.region_context = NULL; |
| 399 | |
| 400 | /* Init the region from the operands */ |
| 401 | |
| 402 | obj_desc->region.space_id = REGION_DATA_TABLE; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 403 | obj_desc->region.address = |
| 404 | (acpi_physical_address) ACPI_TO_INTEGER(table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | obj_desc->region.length = table->length; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 406 | obj_desc->region.node = node; |
| 407 | obj_desc->region.flags = AOPOBJ_DATA_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
| 409 | /* Install the new region object in the parent Node */ |
| 410 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 411 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION); |
| 412 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | goto cleanup; |
| 414 | } |
| 415 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 416 | status = acpi_ev_initialize_region(obj_desc, FALSE); |
| 417 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | if (status == AE_NOT_EXIST) { |
| 419 | status = AE_OK; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 420 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | goto cleanup; |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | obj_desc->region.flags |= AOPOBJ_SETUP_COMPLETE; |
| 426 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 427 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
| 429 | /* Remove local reference to the object */ |
| 430 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 431 | acpi_ut_remove_reference(obj_desc); |
| 432 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | } |
| 434 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 435 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | * |
| 437 | * FUNCTION: acpi_ex_create_processor |
| 438 | * |
| 439 | * PARAMETERS: walk_state - Current state |
| 440 | * |
| 441 | * RETURN: Status |
| 442 | * |
| 443 | * DESCRIPTION: Create a new processor object and populate the fields |
| 444 | * |
| 445 | * Processor (Name[0], cpu_iD[1], pblock_addr[2], pblock_length[3]) |
| 446 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 447 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 449 | acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 451 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 452 | union acpi_operand_object *obj_desc; |
| 453 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 455 | ACPI_FUNCTION_TRACE_PTR("ex_create_processor", walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | |
| 457 | /* Create the processor object */ |
| 458 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 459 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | if (!obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 461 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | } |
| 463 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 464 | /* Initialize the processor object from the operands */ |
| 465 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 466 | obj_desc->processor.proc_id = (u8) operand[1]->integer.value; |
| 467 | obj_desc->processor.address = |
| 468 | (acpi_io_address) operand[2]->integer.value; |
| 469 | obj_desc->processor.length = (u8) operand[3]->integer.value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | |
| 471 | /* Install the processor object in the parent Node */ |
| 472 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 473 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
| 474 | obj_desc, ACPI_TYPE_PROCESSOR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
| 476 | /* Remove local reference to the object */ |
| 477 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 478 | acpi_ut_remove_reference(obj_desc); |
| 479 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | } |
| 481 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 482 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | * |
| 484 | * FUNCTION: acpi_ex_create_power_resource |
| 485 | * |
| 486 | * PARAMETERS: walk_state - Current state |
| 487 | * |
| 488 | * RETURN: Status |
| 489 | * |
| 490 | * DESCRIPTION: Create a new power_resource object and populate the fields |
| 491 | * |
| 492 | * power_resource (Name[0], system_level[1], resource_order[2]) |
| 493 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 494 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 496 | acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 498 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 499 | acpi_status status; |
| 500 | union acpi_operand_object *obj_desc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 502 | ACPI_FUNCTION_TRACE_PTR("ex_create_power_resource", walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
| 504 | /* Create the power resource object */ |
| 505 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 506 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | if (!obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 508 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | } |
| 510 | |
| 511 | /* Initialize the power object from the operands */ |
| 512 | |
| 513 | obj_desc->power_resource.system_level = (u8) operand[1]->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 514 | obj_desc->power_resource.resource_order = |
| 515 | (u16) operand[2]->integer.value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | |
| 517 | /* Install the power resource object in the parent Node */ |
| 518 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 519 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
| 520 | obj_desc, ACPI_TYPE_POWER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
| 522 | /* Remove local reference to the object */ |
| 523 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 524 | acpi_ut_remove_reference(obj_desc); |
| 525 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | #endif |
| 528 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 529 | /******************************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | * |
| 531 | * FUNCTION: acpi_ex_create_method |
| 532 | * |
| 533 | * PARAMETERS: aml_start - First byte of the method's AML |
| 534 | * aml_length - AML byte count for this method |
| 535 | * walk_state - Current state |
| 536 | * |
| 537 | * RETURN: Status |
| 538 | * |
| 539 | * DESCRIPTION: Create a new method object |
| 540 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 541 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
| 543 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 544 | acpi_ex_create_method(u8 * aml_start, |
| 545 | u32 aml_length, struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 547 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 548 | union acpi_operand_object *obj_desc; |
| 549 | acpi_status status; |
| 550 | u8 method_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 552 | ACPI_FUNCTION_TRACE_PTR("ex_create_method", walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | /* Create a new method object */ |
| 555 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 556 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | if (!obj_desc) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 558 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | } |
| 560 | |
| 561 | /* Save the method's AML pointer and length */ |
| 562 | |
| 563 | obj_desc->method.aml_start = aml_start; |
| 564 | obj_desc->method.aml_length = aml_length; |
| 565 | |
| 566 | /* |
| 567 | * Disassemble the method flags. Split off the Arg Count |
| 568 | * for efficiency |
| 569 | */ |
| 570 | method_flags = (u8) operand[1]->integer.value; |
| 571 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 572 | obj_desc->method.method_flags = |
| 573 | (u8) (method_flags & ~AML_METHOD_ARG_COUNT); |
| 574 | obj_desc->method.param_count = |
| 575 | (u8) (method_flags & AML_METHOD_ARG_COUNT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
| 577 | /* |
| 578 | * Get the concurrency count. If required, a semaphore will be |
| 579 | * created for this method when it is parsed. |
| 580 | */ |
| 581 | if (acpi_gbl_all_methods_serialized) { |
| 582 | obj_desc->method.concurrency = 1; |
| 583 | obj_desc->method.method_flags |= AML_METHOD_SERIALIZED; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 584 | } else if (method_flags & AML_METHOD_SERIALIZED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | /* |
| 586 | * ACPI 1.0: Concurrency = 1 |
| 587 | * ACPI 2.0: Concurrency = (sync_level (in method declaration) + 1) |
| 588 | */ |
| 589 | obj_desc->method.concurrency = (u8) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 590 | (((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4) + 1); |
| 591 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | obj_desc->method.concurrency = ACPI_INFINITE_CONCURRENCY; |
| 593 | } |
| 594 | |
| 595 | /* Attach the new object to the method Node */ |
| 596 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 597 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
| 598 | obj_desc, ACPI_TYPE_METHOD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
| 600 | /* Remove local reference to the object */ |
| 601 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 602 | acpi_ut_remove_reference(obj_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
| 604 | /* Remove a reference to the operand */ |
| 605 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame^] | 606 | acpi_ut_remove_reference(operand[1]); |
| 607 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | } |