blob: 95d23dabcfbbe00e4221818b468c8e92483f5942 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/******************************************************************************
2 *
3 * Module Name: excreate - Named object creation
4 *
5 *****************************************************************************/
6
7/*
Bob Moorefbb7a2d2014-02-08 09:42:25 +08008 * Copyright (C) 2000 - 2014, Intel Corp.
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 * 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 Torvalds1da177e2005-04-16 15:20:36 -070044#include <acpi/acpi.h>
Len Browne2f7a772009-01-09 00:30:03 -050045#include "accommon.h"
46#include "acinterp.h"
47#include "amlcode.h"
48#include "acnamesp.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#define _COMPONENT ACPI_EXECUTER
Len Brown4be44fc2005-08-05 00:44:28 -040051ACPI_MODULE_NAME("excreate")
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#ifndef ACPI_NO_METHOD_EXECUTION
Robert Moore44f6c012005-04-18 22:49:35 -040053/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -070054 *
55 * FUNCTION: acpi_ex_create_alias
56 *
57 * PARAMETERS: walk_state - Current state, contains operands
58 *
59 * RETURN: Status
60 *
61 * DESCRIPTION: Create a new named alias
62 *
Robert Moore44f6c012005-04-18 22:49:35 -040063 ******************************************************************************/
Len Brown4be44fc2005-08-05 00:44:28 -040064acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -070065{
Len Brown4be44fc2005-08-05 00:44:28 -040066 struct acpi_namespace_node *target_node;
67 struct acpi_namespace_node *alias_node;
68 acpi_status status = AE_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Bob Mooreb229cf92006-04-21 17:15:00 -040070 ACPI_FUNCTION_TRACE(ex_create_alias);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
72 /* Get the source/alias operands (both namespace nodes) */
73
Len Brown4be44fc2005-08-05 00:44:28 -040074 alias_node = (struct acpi_namespace_node *)walk_state->operands[0];
75 target_node = (struct acpi_namespace_node *)walk_state->operands[1];
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
77 if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) ||
Len Brown4be44fc2005-08-05 00:44:28 -040078 (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 /*
80 * Dereference an existing alias so that we don't create a chain
Bob Moore73a30902012-10-31 02:26:55 +000081 * of aliases. With this code, we guarantee that an alias is
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 * always exactly one level of indirection away from the
83 * actual aliased name.
84 */
Len Brown4be44fc2005-08-05 00:44:28 -040085 target_node =
86 ACPI_CAST_PTR(struct acpi_namespace_node,
87 target_node->object);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 }
89
90 /*
91 * For objects that can never change (i.e., the NS node will
92 * permanently point to the same object), we can simply attach
Bob Moore73a30902012-10-31 02:26:55 +000093 * the object to the new NS node. For other objects (such as
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 * Integers, buffers, etc.), we have to point the Alias node
95 * to the original Node.
96 */
97 switch (target_node->type) {
Bob Moore53cf1742008-04-10 19:06:39 +040098
99 /* For these types, the sub-object can change dynamically via a Store */
100
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 case ACPI_TYPE_INTEGER:
102 case ACPI_TYPE_STRING:
103 case ACPI_TYPE_BUFFER:
104 case ACPI_TYPE_PACKAGE:
105 case ACPI_TYPE_BUFFER_FIELD:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 /*
Bob Moore53cf1742008-04-10 19:06:39 +0400107 * These types open a new scope, so we need the NS node in order to access
108 * any children.
109 */
110 case ACPI_TYPE_DEVICE:
111 case ACPI_TYPE_POWER:
112 case ACPI_TYPE_PROCESSOR:
113 case ACPI_TYPE_THERMAL:
114 case ACPI_TYPE_LOCAL_SCOPE:
Bob Moore53cf1742008-04-10 19:06:39 +0400115 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 * The new alias has the type ALIAS and points to the original
Bob Moore53cf1742008-04-10 19:06:39 +0400117 * NS node, not the object itself.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 */
119 alias_node->type = ACPI_TYPE_LOCAL_ALIAS;
Len Brown4be44fc2005-08-05 00:44:28 -0400120 alias_node->object =
121 ACPI_CAST_PTR(union acpi_operand_object, target_node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 break;
123
124 case ACPI_TYPE_METHOD:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 /*
Bob Moore53cf1742008-04-10 19:06:39 +0400126 * Control method aliases need to be differentiated
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 */
128 alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
Len Brown4be44fc2005-08-05 00:44:28 -0400129 alias_node->object =
130 ACPI_CAST_PTR(union acpi_operand_object, target_node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 break;
132
133 default:
134
135 /* Attach the original source object to the new Alias Node */
136
137 /*
138 * The new alias assumes the type of the target, and it points
Bob Moore73a30902012-10-31 02:26:55 +0000139 * to the same object. The reference count of the object has an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 * additional reference to prevent deletion out from under either the
141 * target node or the alias Node
142 */
Len Brown4be44fc2005-08-05 00:44:28 -0400143 status = acpi_ns_attach_object(alias_node,
144 acpi_ns_get_attached_object
145 (target_node),
146 target_node->type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 break;
148 }
149
150 /* Since both operands are Nodes, we don't need to delete them */
151
Len Brown4be44fc2005-08-05 00:44:28 -0400152 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153}
154
Robert Moore44f6c012005-04-18 22:49:35 -0400155/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 *
157 * FUNCTION: acpi_ex_create_event
158 *
159 * PARAMETERS: walk_state - Current state
160 *
161 * RETURN: Status
162 *
163 * DESCRIPTION: Create a new event object
164 *
Robert Moore44f6c012005-04-18 22:49:35 -0400165 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Len Brown4be44fc2005-08-05 00:44:28 -0400167acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168{
Len Brown4be44fc2005-08-05 00:44:28 -0400169 acpi_status status;
170 union acpi_operand_object *obj_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Bob Mooreb229cf92006-04-21 17:15:00 -0400172 ACPI_FUNCTION_TRACE(ex_create_event);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
Len Brown4be44fc2005-08-05 00:44:28 -0400174 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 if (!obj_desc) {
176 status = AE_NO_MEMORY;
177 goto cleanup;
178 }
179
180 /*
181 * Create the actual OS semaphore, with zero initial units -- meaning
182 * that the event is created in an unsignalled state
183 */
Len Brown4be44fc2005-08-05 00:44:28 -0400184 status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
Bob Moore967440e32006-06-23 17:04:00 -0400185 &obj_desc->event.os_semaphore);
Len Brown4be44fc2005-08-05 00:44:28 -0400186 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 goto cleanup;
188 }
189
190 /* Attach object to the Node */
191
Len Brown4be44fc2005-08-05 00:44:28 -0400192 status =
193 acpi_ns_attach_object((struct acpi_namespace_node *)walk_state->
194 operands[0], obj_desc, ACPI_TYPE_EVENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
Lv Zheng10622bf2013-10-29 09:30:02 +0800196cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 /*
198 * Remove local reference to the object (on error, will cause deletion
199 * of both object and semaphore if present.)
200 */
Len Brown4be44fc2005-08-05 00:44:28 -0400201 acpi_ut_remove_reference(obj_desc);
202 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203}
204
Robert Moore44f6c012005-04-18 22:49:35 -0400205/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 *
207 * FUNCTION: acpi_ex_create_mutex
208 *
209 * PARAMETERS: walk_state - Current state
210 *
211 * RETURN: Status
212 *
213 * DESCRIPTION: Create a new mutex object
214 *
215 * Mutex (Name[0], sync_level[1])
216 *
Robert Moore44f6c012005-04-18 22:49:35 -0400217 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218
Len Brown4be44fc2005-08-05 00:44:28 -0400219acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220{
Len Brown4be44fc2005-08-05 00:44:28 -0400221 acpi_status status = AE_OK;
222 union acpi_operand_object *obj_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223
Bob Mooreb229cf92006-04-21 17:15:00 -0400224 ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
226 /* Create the new mutex object */
227
Len Brown4be44fc2005-08-05 00:44:28 -0400228 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 if (!obj_desc) {
230 status = AE_NO_MEMORY;
231 goto cleanup;
232 }
233
Bob Moore967440e32006-06-23 17:04:00 -0400234 /* Create the actual OS Mutex */
235
236 status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex);
Len Brown4be44fc2005-08-05 00:44:28 -0400237 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 goto cleanup;
239 }
240
241 /* Init object and attach to NS node */
242
Lv Zheng1f86e8c2012-10-31 02:25:45 +0000243 obj_desc->mutex.sync_level = (u8)walk_state->operands[1]->integer.value;
Len Brown4be44fc2005-08-05 00:44:28 -0400244 obj_desc->mutex.node =
245 (struct acpi_namespace_node *)walk_state->operands[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
Bob Moore616861242006-03-17 16:44:00 -0500247 status =
248 acpi_ns_attach_object(obj_desc->mutex.node, obj_desc,
249 ACPI_TYPE_MUTEX);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
Lv Zheng10622bf2013-10-29 09:30:02 +0800251cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 /*
253 * Remove local reference to the object (on error, will cause deletion
254 * of both object and semaphore if present.)
255 */
Len Brown4be44fc2005-08-05 00:44:28 -0400256 acpi_ut_remove_reference(obj_desc);
257 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258}
259
Robert Moore44f6c012005-04-18 22:49:35 -0400260/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 *
262 * FUNCTION: acpi_ex_create_region
263 *
264 * PARAMETERS: aml_start - Pointer to the region declaration AML
265 * aml_length - Max length of the declaration AML
Bob Mooreec463662011-11-30 09:35:05 +0800266 * space_id - Address space ID for the region
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 * walk_state - Current state
268 *
269 * RETURN: Status
270 *
271 * DESCRIPTION: Create a new operation region object
272 *
Robert Moore44f6c012005-04-18 22:49:35 -0400273 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
275acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400276acpi_ex_create_region(u8 * aml_start,
277 u32 aml_length,
Bob Mooreec463662011-11-30 09:35:05 +0800278 u8 space_id, struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279{
Len Brown4be44fc2005-08-05 00:44:28 -0400280 acpi_status status;
281 union acpi_operand_object *obj_desc;
282 struct acpi_namespace_node *node;
283 union acpi_operand_object *region_obj2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284
Bob Mooreb229cf92006-04-21 17:15:00 -0400285 ACPI_FUNCTION_TRACE(ex_create_region);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286
287 /* Get the Namespace Node */
288
289 node = walk_state->op->common.node;
290
291 /*
292 * If the region object is already attached to this node,
293 * just return
294 */
Len Brown4be44fc2005-08-05 00:44:28 -0400295 if (acpi_ns_get_attached_object(node)) {
296 return_ACPI_STATUS(AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 }
298
299 /*
300 * Space ID must be one of the predefined IDs, or in the user-defined
301 * range
302 */
Bob Mooreec463662011-11-30 09:35:05 +0800303 if (!acpi_is_valid_space_id(space_id)) {
304 /*
305 * Print an error message, but continue. We don't want to abort
306 * a table load for this exception. Instead, if the region is
307 * actually used at runtime, abort the executing method.
308 */
309 ACPI_ERROR((AE_INFO,
310 "Invalid/unknown Address Space ID: 0x%2.2X",
311 space_id));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 }
313
Bob Mooref6a22b02010-03-05 17:56:40 +0800314 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
Bob Mooreec463662011-11-30 09:35:05 +0800315 acpi_ut_get_region_name(space_id), space_id));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316
317 /* Create the region descriptor */
318
Len Brown4be44fc2005-08-05 00:44:28 -0400319 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 if (!obj_desc) {
321 status = AE_NO_MEMORY;
322 goto cleanup;
323 }
324
325 /*
326 * Remember location in AML stream of address & length
327 * operands since they need to be evaluated at run time.
328 */
Len Brown4be44fc2005-08-05 00:44:28 -0400329 region_obj2 = obj_desc->common.next_object;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 region_obj2->extra.aml_start = aml_start;
331 region_obj2->extra.aml_length = aml_length;
Lin Ming8931d9e2011-11-28 09:46:02 +0800332 if (walk_state->scope_info) {
333 region_obj2->extra.scope_node =
334 walk_state->scope_info->scope.node;
335 } else {
336 region_obj2->extra.scope_node = node;
337 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339 /* Init the region from the operands */
340
Bob Mooreec463662011-11-30 09:35:05 +0800341 obj_desc->region.space_id = space_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 obj_desc->region.address = 0;
343 obj_desc->region.length = 0;
Len Brown4be44fc2005-08-05 00:44:28 -0400344 obj_desc->region.node = node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
346 /* Install the new region object in the parent Node */
347
Len Brown4be44fc2005-08-05 00:44:28 -0400348 status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
Lv Zheng10622bf2013-10-29 09:30:02 +0800350cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351
352 /* Remove local reference to the object */
353
Len Brown4be44fc2005-08-05 00:44:28 -0400354 acpi_ut_remove_reference(obj_desc);
355 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356}
357
Robert Moore44f6c012005-04-18 22:49:35 -0400358/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 * FUNCTION: acpi_ex_create_processor
361 *
362 * PARAMETERS: walk_state - Current state
363 *
364 * RETURN: Status
365 *
366 * DESCRIPTION: Create a new processor object and populate the fields
367 *
Bob Mooreba494be2012-07-12 09:40:10 +0800368 * Processor (Name[0], cpu_ID[1], pblock_addr[2], pblock_length[3])
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 *
Robert Moore44f6c012005-04-18 22:49:35 -0400370 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
Len Brown4be44fc2005-08-05 00:44:28 -0400372acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373{
Len Brown4be44fc2005-08-05 00:44:28 -0400374 union acpi_operand_object **operand = &walk_state->operands[0];
375 union acpi_operand_object *obj_desc;
376 acpi_status status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377
Bob Mooreb229cf92006-04-21 17:15:00 -0400378 ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379
380 /* Create the processor object */
381
Len Brown4be44fc2005-08-05 00:44:28 -0400382 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400384 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 }
386
Robert Moore44f6c012005-04-18 22:49:35 -0400387 /* Initialize the processor object from the operands */
388
Len Brown4be44fc2005-08-05 00:44:28 -0400389 obj_desc->processor.proc_id = (u8) operand[1]->integer.value;
Bob Moore616861242006-03-17 16:44:00 -0500390 obj_desc->processor.length = (u8) operand[3]->integer.value;
Len Brown4be44fc2005-08-05 00:44:28 -0400391 obj_desc->processor.address =
392 (acpi_io_address) operand[2]->integer.value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393
394 /* Install the processor object in the parent Node */
395
Len Brown4be44fc2005-08-05 00:44:28 -0400396 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
397 obj_desc, ACPI_TYPE_PROCESSOR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398
399 /* Remove local reference to the object */
400
Len Brown4be44fc2005-08-05 00:44:28 -0400401 acpi_ut_remove_reference(obj_desc);
402 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403}
404
Robert Moore44f6c012005-04-18 22:49:35 -0400405/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 *
407 * FUNCTION: acpi_ex_create_power_resource
408 *
409 * PARAMETERS: walk_state - Current state
410 *
411 * RETURN: Status
412 *
413 * DESCRIPTION: Create a new power_resource object and populate the fields
414 *
415 * power_resource (Name[0], system_level[1], resource_order[2])
416 *
Robert Moore44f6c012005-04-18 22:49:35 -0400417 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
Len Brown4be44fc2005-08-05 00:44:28 -0400419acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420{
Len Brown4be44fc2005-08-05 00:44:28 -0400421 union acpi_operand_object **operand = &walk_state->operands[0];
422 acpi_status status;
423 union acpi_operand_object *obj_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424
Bob Mooreb229cf92006-04-21 17:15:00 -0400425 ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426
427 /* Create the power resource object */
428
Len Brown4be44fc2005-08-05 00:44:28 -0400429 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400431 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 }
433
434 /* Initialize the power object from the operands */
435
436 obj_desc->power_resource.system_level = (u8) operand[1]->integer.value;
Len Brown4be44fc2005-08-05 00:44:28 -0400437 obj_desc->power_resource.resource_order =
438 (u16) operand[2]->integer.value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439
440 /* Install the power resource object in the parent Node */
441
Len Brown4be44fc2005-08-05 00:44:28 -0400442 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
443 obj_desc, ACPI_TYPE_POWER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444
445 /* Remove local reference to the object */
446
Len Brown4be44fc2005-08-05 00:44:28 -0400447 acpi_ut_remove_reference(obj_desc);
448 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450#endif
451
Robert Moore44f6c012005-04-18 22:49:35 -0400452/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 *
454 * FUNCTION: acpi_ex_create_method
455 *
456 * PARAMETERS: aml_start - First byte of the method's AML
457 * aml_length - AML byte count for this method
458 * walk_state - Current state
459 *
460 * RETURN: Status
461 *
462 * DESCRIPTION: Create a new method object
463 *
Robert Moore44f6c012005-04-18 22:49:35 -0400464 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465
466acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400467acpi_ex_create_method(u8 * aml_start,
468 u32 aml_length, struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469{
Len Brown4be44fc2005-08-05 00:44:28 -0400470 union acpi_operand_object **operand = &walk_state->operands[0];
471 union acpi_operand_object *obj_desc;
472 acpi_status status;
473 u8 method_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474
Bob Mooreb229cf92006-04-21 17:15:00 -0400475 ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476
477 /* Create a new method object */
478
Len Brown4be44fc2005-08-05 00:44:28 -0400479 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 if (!obj_desc) {
Bob Mooref3d2e782007-02-02 19:48:18 +0300481 status = AE_NO_MEMORY;
482 goto exit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 }
484
485 /* Save the method's AML pointer and length */
486
487 obj_desc->method.aml_start = aml_start;
488 obj_desc->method.aml_length = aml_length;
489
490 /*
Lin Ming26294842011-01-12 09:19:43 +0800491 * Disassemble the method flags. Split off the arg_count, Serialized
492 * flag, and sync_level for efficiency.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 */
494 method_flags = (u8) operand[1]->integer.value;
495
Len Brown4be44fc2005-08-05 00:44:28 -0400496 obj_desc->method.param_count =
497 (u8) (method_flags & AML_METHOD_ARG_COUNT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498
499 /*
Bob Moore967440e32006-06-23 17:04:00 -0400500 * Get the sync_level. If method is serialized, a mutex will be
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 * created for this method when it is parsed.
502 */
Len Brown4d2acd92007-05-09 22:56:38 -0400503 if (method_flags & AML_METHOD_SERIALIZED) {
Lin Ming26294842011-01-12 09:19:43 +0800504 obj_desc->method.info_flags = ACPI_METHOD_SERIALIZED;
505
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 /*
Bob Moore967440e32006-06-23 17:04:00 -0400507 * ACPI 1.0: sync_level = 0
508 * ACPI 2.0: sync_level = sync_level in method declaration
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 */
Bob Moore967440e32006-06-23 17:04:00 -0400510 obj_desc->method.sync_level = (u8)
Lin Mingb2f7ddc2009-05-21 10:42:09 +0800511 ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 }
513
514 /* Attach the new object to the method Node */
515
Len Brown4be44fc2005-08-05 00:44:28 -0400516 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
517 obj_desc, ACPI_TYPE_METHOD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518
519 /* Remove local reference to the object */
520
Len Brown4be44fc2005-08-05 00:44:28 -0400521 acpi_ut_remove_reference(obj_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522
Lv Zheng10622bf2013-10-29 09:30:02 +0800523exit:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 /* Remove a reference to the operand */
525
Len Brown4be44fc2005-08-05 00:44:28 -0400526 acpi_ut_remove_reference(operand[1]);
527 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528}