blob: 7c38528a7e8336ef1ec3c57b2bc5c7741438281f [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/******************************************************************************
2 *
3 * Module Name: excreate - Named object creation
4 *
5 *****************************************************************************/
6
7/*
Bob Moore6c9deb72007-02-02 19:48:24 +03008 * Copyright (C) 2000 - 2007, R. Byron Moore
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>
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 Torvalds1da177e2005-04-16 15:20:36 -070051#define _COMPONENT ACPI_EXECUTER
Len Brown4be44fc2005-08-05 00:44:28 -040052ACPI_MODULE_NAME("excreate")
Linus Torvalds1da177e2005-04-16 15:20:36 -070053
54#ifndef ACPI_NO_METHOD_EXECUTION
Robert Moore44f6c012005-04-18 22:49:35 -040055/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 *
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 Moore44f6c012005-04-18 22:49:35 -040065 ******************************************************************************/
Len Brown4be44fc2005-08-05 00:44:28 -040066acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -070067{
Len Brown4be44fc2005-08-05 00:44:28 -040068 struct acpi_namespace_node *target_node;
69 struct acpi_namespace_node *alias_node;
70 acpi_status status = AE_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
Bob Mooreb229cf92006-04-21 17:15:00 -040072 ACPI_FUNCTION_TRACE(ex_create_alias);
Linus Torvalds1da177e2005-04-16 15:20:36 -070073
74 /* Get the source/alias operands (both namespace nodes) */
75
Len Brown4be44fc2005-08-05 00:44:28 -040076 alias_node = (struct acpi_namespace_node *)walk_state->operands[0];
77 target_node = (struct acpi_namespace_node *)walk_state->operands[1];
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
79 if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) ||
Len Brown4be44fc2005-08-05 00:44:28 -040080 (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 /*
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 Brown4be44fc2005-08-05 00:44:28 -040087 target_node =
88 ACPI_CAST_PTR(struct acpi_namespace_node,
89 target_node->object);
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 }
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 Brown4be44fc2005-08-05 00:44:28 -0400112 alias_node->object =
113 ACPI_CAST_PTR(union acpi_operand_object, target_node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 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 Brown4be44fc2005-08-05 00:44:28 -0400124 alias_node->object =
125 ACPI_CAST_PTR(union acpi_operand_object, target_node);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 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 Brown4be44fc2005-08-05 00:44:28 -0400138 status = acpi_ns_attach_object(alias_node,
139 acpi_ns_get_attached_object
140 (target_node),
141 target_node->type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 break;
143 }
144
145 /* Since both operands are Nodes, we don't need to delete them */
146
Len Brown4be44fc2005-08-05 00:44:28 -0400147 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148}
149
Robert Moore44f6c012005-04-18 22:49:35 -0400150/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 *
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 Moore44f6c012005-04-18 22:49:35 -0400160 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
Len Brown4be44fc2005-08-05 00:44:28 -0400162acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163{
Len Brown4be44fc2005-08-05 00:44:28 -0400164 acpi_status status;
165 union acpi_operand_object *obj_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Bob Mooreb229cf92006-04-21 17:15:00 -0400167 ACPI_FUNCTION_TRACE(ex_create_event);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168
Len Brown4be44fc2005-08-05 00:44:28 -0400169 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 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 Brown4be44fc2005-08-05 00:44:28 -0400179 status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
Bob Moore967440e2006-06-23 17:04:00 -0400180 &obj_desc->event.os_semaphore);
Len Brown4be44fc2005-08-05 00:44:28 -0400181 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 goto cleanup;
183 }
184
185 /* Attach object to the Node */
186
Len Brown4be44fc2005-08-05 00:44:28 -0400187 status =
188 acpi_ns_attach_object((struct acpi_namespace_node *)walk_state->
189 operands[0], obj_desc, ACPI_TYPE_EVENT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190
Len Brown4be44fc2005-08-05 00:44:28 -0400191 cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 /*
193 * Remove local reference to the object (on error, will cause deletion
194 * of both object and semaphore if present.)
195 */
Len Brown4be44fc2005-08-05 00:44:28 -0400196 acpi_ut_remove_reference(obj_desc);
197 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198}
199
Robert Moore44f6c012005-04-18 22:49:35 -0400200/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201 *
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 Moore44f6c012005-04-18 22:49:35 -0400212 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213
Len Brown4be44fc2005-08-05 00:44:28 -0400214acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215{
Len Brown4be44fc2005-08-05 00:44:28 -0400216 acpi_status status = AE_OK;
217 union acpi_operand_object *obj_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218
Bob Mooreb229cf92006-04-21 17:15:00 -0400219 ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220
221 /* Create the new mutex object */
222
Len Brown4be44fc2005-08-05 00:44:28 -0400223 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 if (!obj_desc) {
225 status = AE_NO_MEMORY;
226 goto cleanup;
227 }
228
Bob Moore967440e2006-06-23 17:04:00 -0400229 /* Create the actual OS Mutex */
230
231 status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex);
Len Brown4be44fc2005-08-05 00:44:28 -0400232 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 goto cleanup;
234 }
235
236 /* Init object and attach to NS node */
237
Len Brown4be44fc2005-08-05 00:44:28 -0400238 obj_desc->mutex.sync_level =
239 (u8) walk_state->operands[1]->integer.value;
240 obj_desc->mutex.node =
241 (struct acpi_namespace_node *)walk_state->operands[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
Bob Moore616861242006-03-17 16:44:00 -0500243 status =
244 acpi_ns_attach_object(obj_desc->mutex.node, obj_desc,
245 ACPI_TYPE_MUTEX);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
Len Brown4be44fc2005-08-05 00:44:28 -0400247 cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 /*
249 * Remove local reference to the object (on error, will cause deletion
250 * of both object and semaphore if present.)
251 */
Len Brown4be44fc2005-08-05 00:44:28 -0400252 acpi_ut_remove_reference(obj_desc);
253 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254}
255
Robert Moore44f6c012005-04-18 22:49:35 -0400256/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 *
258 * FUNCTION: acpi_ex_create_region
259 *
260 * PARAMETERS: aml_start - Pointer to the region declaration AML
261 * aml_length - Max length of the declaration AML
Robert Moore44f6c012005-04-18 22:49:35 -0400262 * region_space - space_iD for the region
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 * walk_state - Current state
264 *
265 * RETURN: Status
266 *
267 * DESCRIPTION: Create a new operation region object
268 *
Robert Moore44f6c012005-04-18 22:49:35 -0400269 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270
271acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400272acpi_ex_create_region(u8 * aml_start,
273 u32 aml_length,
274 u8 region_space, struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275{
Len Brown4be44fc2005-08-05 00:44:28 -0400276 acpi_status status;
277 union acpi_operand_object *obj_desc;
278 struct acpi_namespace_node *node;
279 union acpi_operand_object *region_obj2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
Bob Mooreb229cf92006-04-21 17:15:00 -0400281 ACPI_FUNCTION_TRACE(ex_create_region);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282
283 /* Get the Namespace Node */
284
285 node = walk_state->op->common.node;
286
287 /*
288 * If the region object is already attached to this node,
289 * just return
290 */
Len Brown4be44fc2005-08-05 00:44:28 -0400291 if (acpi_ns_get_attached_object(node)) {
292 return_ACPI_STATUS(AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 }
294
295 /*
296 * Space ID must be one of the predefined IDs, or in the user-defined
297 * range
298 */
299 if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) &&
Len Brown4be44fc2005-08-05 00:44:28 -0400300 (region_space < ACPI_USER_REGION_BEGIN)) {
Bob Mooreb229cf92006-04-21 17:15:00 -0400301 ACPI_ERROR((AE_INFO, "Invalid AddressSpace type %X",
Bob Mooreb8e4d892006-01-27 16:43:00 -0500302 region_space));
Len Brown4be44fc2005-08-05 00:44:28 -0400303 return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 }
305
Len Brown4be44fc2005-08-05 00:44:28 -0400306 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (%X)\n",
307 acpi_ut_get_region_name(region_space), region_space));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
309 /* Create the region descriptor */
310
Len Brown4be44fc2005-08-05 00:44:28 -0400311 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 if (!obj_desc) {
313 status = AE_NO_MEMORY;
314 goto cleanup;
315 }
316
317 /*
318 * Remember location in AML stream of address & length
319 * operands since they need to be evaluated at run time.
320 */
Len Brown4be44fc2005-08-05 00:44:28 -0400321 region_obj2 = obj_desc->common.next_object;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 region_obj2->extra.aml_start = aml_start;
323 region_obj2->extra.aml_length = aml_length;
324
325 /* Init the region from the operands */
326
327 obj_desc->region.space_id = region_space;
328 obj_desc->region.address = 0;
329 obj_desc->region.length = 0;
Len Brown4be44fc2005-08-05 00:44:28 -0400330 obj_desc->region.node = node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331
332 /* Install the new region object in the parent Node */
333
Len Brown4be44fc2005-08-05 00:44:28 -0400334 status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
Len Brown4be44fc2005-08-05 00:44:28 -0400336 cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
338 /* Remove local reference to the object */
339
Len Brown4be44fc2005-08-05 00:44:28 -0400340 acpi_ut_remove_reference(obj_desc);
341 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342}
343
Robert Moore44f6c012005-04-18 22:49:35 -0400344/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 *
346 * FUNCTION: acpi_ex_create_table_region
347 *
348 * PARAMETERS: walk_state - Current state
349 *
350 * RETURN: Status
351 *
352 * DESCRIPTION: Create a new data_table_region object
353 *
Robert Moore44f6c012005-04-18 22:49:35 -0400354 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
Len Brown4be44fc2005-08-05 00:44:28 -0400356acpi_status acpi_ex_create_table_region(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357{
Len Brown4be44fc2005-08-05 00:44:28 -0400358 acpi_status status;
359 union acpi_operand_object **operand = &walk_state->operands[0];
360 union acpi_operand_object *obj_desc;
361 struct acpi_namespace_node *node;
Len Brown4be44fc2005-08-05 00:44:28 -0400362 union acpi_operand_object *region_obj2;
Bob Mooref3d2e782007-02-02 19:48:18 +0300363 acpi_native_uint table_index;
364 struct acpi_table_header *table;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365
Bob Mooreb229cf92006-04-21 17:15:00 -0400366 ACPI_FUNCTION_TRACE(ex_create_table_region);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367
368 /* Get the Node from the object stack */
369
370 node = walk_state->op->common.node;
371
372 /*
373 * If the region object is already attached to this node,
374 * just return
375 */
Len Brown4be44fc2005-08-05 00:44:28 -0400376 if (acpi_ns_get_attached_object(node)) {
377 return_ACPI_STATUS(AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 }
379
380 /* Find the ACPI table */
381
Len Brown4be44fc2005-08-05 00:44:28 -0400382 status = acpi_tb_find_table(operand[1]->string.pointer,
383 operand[2]->string.pointer,
Bob Mooref3d2e782007-02-02 19:48:18 +0300384 operand[3]->string.pointer, &table_index);
Len Brown4be44fc2005-08-05 00:44:28 -0400385 if (ACPI_FAILURE(status)) {
386 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 }
388
389 /* Create the region descriptor */
390
Len Brown4be44fc2005-08-05 00:44:28 -0400391 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400393 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 }
395
Len Brown4be44fc2005-08-05 00:44:28 -0400396 region_obj2 = obj_desc->common.next_object;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 region_obj2->extra.region_context = NULL;
398
Bob Mooref3d2e782007-02-02 19:48:18 +0300399 status = acpi_get_table_by_index(table_index, &table);
400 if (ACPI_FAILURE(status)) {
401 return_ACPI_STATUS(status);
402 }
403
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 /* Init the region from the operands */
405
406 obj_desc->region.space_id = REGION_DATA_TABLE;
Len Brown4be44fc2005-08-05 00:44:28 -0400407 obj_desc->region.address =
408 (acpi_physical_address) ACPI_TO_INTEGER(table);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 obj_desc->region.length = table->length;
Len Brown4be44fc2005-08-05 00:44:28 -0400410 obj_desc->region.node = node;
411 obj_desc->region.flags = AOPOBJ_DATA_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412
413 /* Install the new region object in the parent Node */
414
Len Brown4be44fc2005-08-05 00:44:28 -0400415 status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
416 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 goto cleanup;
418 }
419
Len Brown4be44fc2005-08-05 00:44:28 -0400420 status = acpi_ev_initialize_region(obj_desc, FALSE);
421 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 if (status == AE_NOT_EXIST) {
423 status = AE_OK;
Len Brown4be44fc2005-08-05 00:44:28 -0400424 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 goto cleanup;
426 }
427 }
428
429 obj_desc->region.flags |= AOPOBJ_SETUP_COMPLETE;
430
Len Brown4be44fc2005-08-05 00:44:28 -0400431 cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432
433 /* Remove local reference to the object */
434
Len Brown4be44fc2005-08-05 00:44:28 -0400435 acpi_ut_remove_reference(obj_desc);
436 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437}
438
Robert Moore44f6c012005-04-18 22:49:35 -0400439/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 *
441 * FUNCTION: acpi_ex_create_processor
442 *
443 * PARAMETERS: walk_state - Current state
444 *
445 * RETURN: Status
446 *
447 * DESCRIPTION: Create a new processor object and populate the fields
448 *
449 * Processor (Name[0], cpu_iD[1], pblock_addr[2], pblock_length[3])
450 *
Robert Moore44f6c012005-04-18 22:49:35 -0400451 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
Len Brown4be44fc2005-08-05 00:44:28 -0400453acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454{
Len Brown4be44fc2005-08-05 00:44:28 -0400455 union acpi_operand_object **operand = &walk_state->operands[0];
456 union acpi_operand_object *obj_desc;
457 acpi_status status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Bob Mooreb229cf92006-04-21 17:15:00 -0400459 ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460
461 /* Create the processor object */
462
Len Brown4be44fc2005-08-05 00:44:28 -0400463 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400465 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 }
467
Robert Moore44f6c012005-04-18 22:49:35 -0400468 /* Initialize the processor object from the operands */
469
Len Brown4be44fc2005-08-05 00:44:28 -0400470 obj_desc->processor.proc_id = (u8) operand[1]->integer.value;
Bob Moore616861242006-03-17 16:44:00 -0500471 obj_desc->processor.length = (u8) operand[3]->integer.value;
Len Brown4be44fc2005-08-05 00:44:28 -0400472 obj_desc->processor.address =
473 (acpi_io_address) operand[2]->integer.value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474
475 /* Install the processor object in the parent Node */
476
Len Brown4be44fc2005-08-05 00:44:28 -0400477 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
478 obj_desc, ACPI_TYPE_PROCESSOR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479
480 /* Remove local reference to the object */
481
Len Brown4be44fc2005-08-05 00:44:28 -0400482 acpi_ut_remove_reference(obj_desc);
483 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484}
485
Robert Moore44f6c012005-04-18 22:49:35 -0400486/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 *
488 * FUNCTION: acpi_ex_create_power_resource
489 *
490 * PARAMETERS: walk_state - Current state
491 *
492 * RETURN: Status
493 *
494 * DESCRIPTION: Create a new power_resource object and populate the fields
495 *
496 * power_resource (Name[0], system_level[1], resource_order[2])
497 *
Robert Moore44f6c012005-04-18 22:49:35 -0400498 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499
Len Brown4be44fc2005-08-05 00:44:28 -0400500acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501{
Len Brown4be44fc2005-08-05 00:44:28 -0400502 union acpi_operand_object **operand = &walk_state->operands[0];
503 acpi_status status;
504 union acpi_operand_object *obj_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505
Bob Mooreb229cf92006-04-21 17:15:00 -0400506 ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507
508 /* Create the power resource object */
509
Len Brown4be44fc2005-08-05 00:44:28 -0400510 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400512 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 }
514
515 /* Initialize the power object from the operands */
516
517 obj_desc->power_resource.system_level = (u8) operand[1]->integer.value;
Len Brown4be44fc2005-08-05 00:44:28 -0400518 obj_desc->power_resource.resource_order =
519 (u16) operand[2]->integer.value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520
521 /* Install the power resource object in the parent Node */
522
Len Brown4be44fc2005-08-05 00:44:28 -0400523 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
524 obj_desc, ACPI_TYPE_POWER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525
526 /* Remove local reference to the object */
527
Len Brown4be44fc2005-08-05 00:44:28 -0400528 acpi_ut_remove_reference(obj_desc);
529 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531#endif
532
Robert Moore44f6c012005-04-18 22:49:35 -0400533/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 *
535 * FUNCTION: acpi_ex_create_method
536 *
537 * PARAMETERS: aml_start - First byte of the method's AML
538 * aml_length - AML byte count for this method
539 * walk_state - Current state
540 *
541 * RETURN: Status
542 *
543 * DESCRIPTION: Create a new method object
544 *
Robert Moore44f6c012005-04-18 22:49:35 -0400545 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546
547acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400548acpi_ex_create_method(u8 * aml_start,
549 u32 aml_length, struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550{
Len Brown4be44fc2005-08-05 00:44:28 -0400551 union acpi_operand_object **operand = &walk_state->operands[0];
552 union acpi_operand_object *obj_desc;
553 acpi_status status;
554 u8 method_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555
Bob Mooreb229cf92006-04-21 17:15:00 -0400556 ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557
558 /* Create a new method object */
559
Len Brown4be44fc2005-08-05 00:44:28 -0400560 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 if (!obj_desc) {
Bob Mooref3d2e782007-02-02 19:48:18 +0300562 status = AE_NO_MEMORY;
563 goto exit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 }
565
566 /* Save the method's AML pointer and length */
567
568 obj_desc->method.aml_start = aml_start;
569 obj_desc->method.aml_length = aml_length;
570
571 /*
Bob Moore967440e2006-06-23 17:04:00 -0400572 * Disassemble the method flags. Split off the Arg Count
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 * for efficiency
574 */
575 method_flags = (u8) operand[1]->integer.value;
576
Len Brown4be44fc2005-08-05 00:44:28 -0400577 obj_desc->method.method_flags =
578 (u8) (method_flags & ~AML_METHOD_ARG_COUNT);
579 obj_desc->method.param_count =
580 (u8) (method_flags & AML_METHOD_ARG_COUNT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581
582 /*
Bob Moore967440e2006-06-23 17:04:00 -0400583 * Get the sync_level. If method is serialized, a mutex will be
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 * created for this method when it is parsed.
585 */
Len Brown4d2acd92007-05-09 22:56:38 -0400586 if (method_flags & AML_METHOD_SERIALIZED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 /*
Bob Moore967440e2006-06-23 17:04:00 -0400588 * ACPI 1.0: sync_level = 0
589 * ACPI 2.0: sync_level = sync_level in method declaration
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590 */
Bob Moore967440e2006-06-23 17:04:00 -0400591 obj_desc->method.sync_level = (u8)
592 ((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 }
594
595 /* Attach the new object to the method Node */
596
Len Brown4be44fc2005-08-05 00:44:28 -0400597 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
598 obj_desc, ACPI_TYPE_METHOD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599
600 /* Remove local reference to the object */
601
Len Brown4be44fc2005-08-05 00:44:28 -0400602 acpi_ut_remove_reference(obj_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603
Bob Mooref3d2e782007-02-02 19:48:18 +0300604 exit:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 /* Remove a reference to the operand */
606
Len Brown4be44fc2005-08-05 00:44:28 -0400607 acpi_ut_remove_reference(operand[1]);
608 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609}