blob: 680575402835aa735b7bb76ecc1f536e0d94fedb [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/******************************************************************************
2 *
3 * Module Name: excreate - Named object creation
4 *
5 *****************************************************************************/
6
7/*
Bob Moore4a90c7e2006-01-13 16:22:00 -05008 * Copyright (C) 2000 - 2006, 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
Len Brown4be44fc2005-08-05 00:44:28 -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
Len Brown4be44fc2005-08-05 00:44:28 -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,
180 &obj_desc->event.semaphore);
181 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
Len Brown4be44fc2005-08-05 00:44:28 -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
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 Brown4be44fc2005-08-05 00:44:28 -0400234 status = acpi_os_create_semaphore(1, 1, &obj_desc->mutex.semaphore);
235 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 goto cleanup;
237 }
238
239 /* Init object and attach to NS node */
240
Len Brown4be44fc2005-08-05 00:44:28 -0400241 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 Torvalds1da177e2005-04-16 15:20:36 -0700245
Len Brown4be44fc2005-08-05 00:44:28 -0400246 status = acpi_ns_attach_object(obj_desc->mutex.node,
247 obj_desc, ACPI_TYPE_MUTEX);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
Len Brown4be44fc2005-08-05 00:44:28 -0400249 cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 /*
251 * Remove local reference to the object (on error, will cause deletion
252 * of both object and semaphore if present.)
253 */
Len Brown4be44fc2005-08-05 00:44:28 -0400254 acpi_ut_remove_reference(obj_desc);
255 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256}
257
Robert Moore44f6c012005-04-18 22:49:35 -0400258/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 *
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 Moore44f6c012005-04-18 22:49:35 -0400264 * region_space - space_iD for the region
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 * walk_state - Current state
266 *
267 * RETURN: Status
268 *
269 * DESCRIPTION: Create a new operation region object
270 *
Robert Moore44f6c012005-04-18 22:49:35 -0400271 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272
273acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400274acpi_ex_create_region(u8 * aml_start,
275 u32 aml_length,
276 u8 region_space, struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277{
Len Brown4be44fc2005-08-05 00:44:28 -0400278 acpi_status status;
279 union acpi_operand_object *obj_desc;
280 struct acpi_namespace_node *node;
281 union acpi_operand_object *region_obj2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282
Len Brown4be44fc2005-08-05 00:44:28 -0400283 ACPI_FUNCTION_TRACE("ex_create_region");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284
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 Brown4be44fc2005-08-05 00:44:28 -0400293 if (acpi_ns_get_attached_object(node)) {
294 return_ACPI_STATUS(AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 }
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 Brown4be44fc2005-08-05 00:44:28 -0400302 (region_space < ACPI_USER_REGION_BEGIN)) {
Bob Mooreb8e4d892006-01-27 16:43:00 -0500303 ACPI_ERROR((AE_INFO, "Invalid address_space type %X",
304 region_space));
Len Brown4be44fc2005-08-05 00:44:28 -0400305 return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 }
307
Len Brown4be44fc2005-08-05 00:44:28 -0400308 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (%X)\n",
309 acpi_ut_get_region_name(region_space), region_space));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
311 /* Create the region descriptor */
312
Len Brown4be44fc2005-08-05 00:44:28 -0400313 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 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 Brown4be44fc2005-08-05 00:44:28 -0400323 region_obj2 = obj_desc->common.next_object;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 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 Brown4be44fc2005-08-05 00:44:28 -0400332 obj_desc->region.node = node;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333
334 /* Install the new region object in the parent Node */
335
Len Brown4be44fc2005-08-05 00:44:28 -0400336 status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
Len Brown4be44fc2005-08-05 00:44:28 -0400338 cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
340 /* Remove local reference to the object */
341
Len Brown4be44fc2005-08-05 00:44:28 -0400342 acpi_ut_remove_reference(obj_desc);
343 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344}
345
Robert Moore44f6c012005-04-18 22:49:35 -0400346/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 *
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 Moore44f6c012005-04-18 22:49:35 -0400356 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357
Len Brown4be44fc2005-08-05 00:44:28 -0400358acpi_status acpi_ex_create_table_region(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359{
Len Brown4be44fc2005-08-05 00:44:28 -0400360 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 Torvalds1da177e2005-04-16 15:20:36 -0700366
Len Brown4be44fc2005-08-05 00:44:28 -0400367 ACPI_FUNCTION_TRACE("ex_create_table_region");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
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 Brown4be44fc2005-08-05 00:44:28 -0400377 if (acpi_ns_get_attached_object(node)) {
378 return_ACPI_STATUS(AE_OK);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 }
380
381 /* Find the ACPI table */
382
Len Brown4be44fc2005-08-05 00:44:28 -0400383 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 Torvalds1da177e2005-04-16 15:20:36 -0700388 }
389
390 /* Create the region descriptor */
391
Len Brown4be44fc2005-08-05 00:44:28 -0400392 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400394 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 }
396
Len Brown4be44fc2005-08-05 00:44:28 -0400397 region_obj2 = obj_desc->common.next_object;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 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 Brown4be44fc2005-08-05 00:44:28 -0400403 obj_desc->region.address =
404 (acpi_physical_address) ACPI_TO_INTEGER(table);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 obj_desc->region.length = table->length;
Len Brown4be44fc2005-08-05 00:44:28 -0400406 obj_desc->region.node = node;
407 obj_desc->region.flags = AOPOBJ_DATA_VALID;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
409 /* Install the new region object in the parent Node */
410
Len Brown4be44fc2005-08-05 00:44:28 -0400411 status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
412 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 goto cleanup;
414 }
415
Len Brown4be44fc2005-08-05 00:44:28 -0400416 status = acpi_ev_initialize_region(obj_desc, FALSE);
417 if (ACPI_FAILURE(status)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 if (status == AE_NOT_EXIST) {
419 status = AE_OK;
Len Brown4be44fc2005-08-05 00:44:28 -0400420 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 goto cleanup;
422 }
423 }
424
425 obj_desc->region.flags |= AOPOBJ_SETUP_COMPLETE;
426
Len Brown4be44fc2005-08-05 00:44:28 -0400427 cleanup:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
429 /* Remove local reference to the object */
430
Len Brown4be44fc2005-08-05 00:44:28 -0400431 acpi_ut_remove_reference(obj_desc);
432 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433}
434
Robert Moore44f6c012005-04-18 22:49:35 -0400435/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 *
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 Moore44f6c012005-04-18 22:49:35 -0400447 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448
Len Brown4be44fc2005-08-05 00:44:28 -0400449acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450{
Len Brown4be44fc2005-08-05 00:44:28 -0400451 union acpi_operand_object **operand = &walk_state->operands[0];
452 union acpi_operand_object *obj_desc;
453 acpi_status status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454
Len Brown4be44fc2005-08-05 00:44:28 -0400455 ACPI_FUNCTION_TRACE_PTR("ex_create_processor", walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456
457 /* Create the processor object */
458
Len Brown4be44fc2005-08-05 00:44:28 -0400459 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400461 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 }
463
Robert Moore44f6c012005-04-18 22:49:35 -0400464 /* Initialize the processor object from the operands */
465
Len Brown4be44fc2005-08-05 00:44:28 -0400466 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 Torvalds1da177e2005-04-16 15:20:36 -0700470
471 /* Install the processor object in the parent Node */
472
Len Brown4be44fc2005-08-05 00:44:28 -0400473 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
474 obj_desc, ACPI_TYPE_PROCESSOR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
476 /* Remove local reference to the object */
477
Len Brown4be44fc2005-08-05 00:44:28 -0400478 acpi_ut_remove_reference(obj_desc);
479 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480}
481
Robert Moore44f6c012005-04-18 22:49:35 -0400482/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 *
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 Moore44f6c012005-04-18 22:49:35 -0400494 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
Len Brown4be44fc2005-08-05 00:44:28 -0400496acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497{
Len Brown4be44fc2005-08-05 00:44:28 -0400498 union acpi_operand_object **operand = &walk_state->operands[0];
499 acpi_status status;
500 union acpi_operand_object *obj_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Len Brown4be44fc2005-08-05 00:44:28 -0400502 ACPI_FUNCTION_TRACE_PTR("ex_create_power_resource", walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
504 /* Create the power resource object */
505
Len Brown4be44fc2005-08-05 00:44:28 -0400506 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400508 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 }
510
511 /* Initialize the power object from the operands */
512
513 obj_desc->power_resource.system_level = (u8) operand[1]->integer.value;
Len Brown4be44fc2005-08-05 00:44:28 -0400514 obj_desc->power_resource.resource_order =
515 (u16) operand[2]->integer.value;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516
517 /* Install the power resource object in the parent Node */
518
Len Brown4be44fc2005-08-05 00:44:28 -0400519 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
520 obj_desc, ACPI_TYPE_POWER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521
522 /* Remove local reference to the object */
523
Len Brown4be44fc2005-08-05 00:44:28 -0400524 acpi_ut_remove_reference(obj_desc);
525 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527#endif
528
Robert Moore44f6c012005-04-18 22:49:35 -0400529/*******************************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 *
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 Moore44f6c012005-04-18 22:49:35 -0400541 ******************************************************************************/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542
543acpi_status
Len Brown4be44fc2005-08-05 00:44:28 -0400544acpi_ex_create_method(u8 * aml_start,
545 u32 aml_length, struct acpi_walk_state *walk_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546{
Len Brown4be44fc2005-08-05 00:44:28 -0400547 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 Torvalds1da177e2005-04-16 15:20:36 -0700551
Len Brown4be44fc2005-08-05 00:44:28 -0400552 ACPI_FUNCTION_TRACE_PTR("ex_create_method", walk_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553
554 /* Create a new method object */
555
Len Brown4be44fc2005-08-05 00:44:28 -0400556 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 if (!obj_desc) {
Len Brown4be44fc2005-08-05 00:44:28 -0400558 return_ACPI_STATUS(AE_NO_MEMORY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 }
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 Brown4be44fc2005-08-05 00:44:28 -0400572 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 Torvalds1da177e2005-04-16 15:20:36 -0700576
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 Brown4be44fc2005-08-05 00:44:28 -0400584 } else if (method_flags & AML_METHOD_SERIALIZED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 /*
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 Brown4be44fc2005-08-05 00:44:28 -0400590 (((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4) + 1);
591 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 obj_desc->method.concurrency = ACPI_INFINITE_CONCURRENCY;
593 }
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
604 /* Remove a reference to the operand */
605
Len Brown4be44fc2005-08-05 00:44:28 -0400606 acpi_ut_remove_reference(operand[1]);
607 return_ACPI_STATUS(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608}