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1/******************************************************************************
2 *
3 * Module Name: excreate - Named object creation
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2011, Intel Corp.
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
44#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acinterp.h"
47#include "amlcode.h"
48#include "acnamesp.h"
49
50#define _COMPONENT ACPI_EXECUTER
51ACPI_MODULE_NAME("excreate")
52#ifndef ACPI_NO_METHOD_EXECUTION
53/*******************************************************************************
54 *
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 *
63 ******************************************************************************/
64acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
65{
66 struct acpi_namespace_node *target_node;
67 struct acpi_namespace_node *alias_node;
68 acpi_status status = AE_OK;
69
70 ACPI_FUNCTION_TRACE(ex_create_alias);
71
72 /* Get the source/alias operands (both namespace nodes) */
73
74 alias_node = (struct acpi_namespace_node *)walk_state->operands[0];
75 target_node = (struct acpi_namespace_node *)walk_state->operands[1];
76
77 if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) ||
78 (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
79 /*
80 * Dereference an existing alias so that we don't create a chain
81 * of aliases. With this code, we guarantee that an alias is
82 * always exactly one level of indirection away from the
83 * actual aliased name.
84 */
85 target_node =
86 ACPI_CAST_PTR(struct acpi_namespace_node,
87 target_node->object);
88 }
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
93 * the object to the new NS node. For other objects (such as
94 * Integers, buffers, etc.), we have to point the Alias node
95 * to the original Node.
96 */
97 switch (target_node->type) {
98
99 /* For these types, the sub-object can change dynamically via a Store */
100
101 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:
106
107 /*
108 * These types open a new scope, so we need the NS node in order to access
109 * any children.
110 */
111 case ACPI_TYPE_DEVICE:
112 case ACPI_TYPE_POWER:
113 case ACPI_TYPE_PROCESSOR:
114 case ACPI_TYPE_THERMAL:
115 case ACPI_TYPE_LOCAL_SCOPE:
116
117 /*
118 * The new alias has the type ALIAS and points to the original
119 * NS node, not the object itself.
120 */
121 alias_node->type = ACPI_TYPE_LOCAL_ALIAS;
122 alias_node->object =
123 ACPI_CAST_PTR(union acpi_operand_object, target_node);
124 break;
125
126 case ACPI_TYPE_METHOD:
127
128 /*
129 * Control method aliases need to be differentiated
130 */
131 alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
132 alias_node->object =
133 ACPI_CAST_PTR(union acpi_operand_object, target_node);
134 break;
135
136 default:
137
138 /* Attach the original source object to the new Alias Node */
139
140 /*
141 * The new alias assumes the type of the target, and it points
142 * to the same object. The reference count of the object has an
143 * additional reference to prevent deletion out from under either the
144 * target node or the alias Node
145 */
146 status = acpi_ns_attach_object(alias_node,
147 acpi_ns_get_attached_object
148 (target_node),
149 target_node->type);
150 break;
151 }
152
153 /* Since both operands are Nodes, we don't need to delete them */
154
155 return_ACPI_STATUS(status);
156}
157
158/*******************************************************************************
159 *
160 * FUNCTION: acpi_ex_create_event
161 *
162 * PARAMETERS: walk_state - Current state
163 *
164 * RETURN: Status
165 *
166 * DESCRIPTION: Create a new event object
167 *
168 ******************************************************************************/
169
170acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state)
171{
172 acpi_status status;
173 union acpi_operand_object *obj_desc;
174
175 ACPI_FUNCTION_TRACE(ex_create_event);
176
177 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT);
178 if (!obj_desc) {
179 status = AE_NO_MEMORY;
180 goto cleanup;
181 }
182
183 /*
184 * Create the actual OS semaphore, with zero initial units -- meaning
185 * that the event is created in an unsignalled state
186 */
187 status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
188 &obj_desc->event.os_semaphore);
189 if (ACPI_FAILURE(status)) {
190 goto cleanup;
191 }
192
193 /* Attach object to the Node */
194
195 status =
196 acpi_ns_attach_object((struct acpi_namespace_node *)walk_state->
197 operands[0], obj_desc, ACPI_TYPE_EVENT);
198
199 cleanup:
200 /*
201 * Remove local reference to the object (on error, will cause deletion
202 * of both object and semaphore if present.)
203 */
204 acpi_ut_remove_reference(obj_desc);
205 return_ACPI_STATUS(status);
206}
207
208/*******************************************************************************
209 *
210 * FUNCTION: acpi_ex_create_mutex
211 *
212 * PARAMETERS: walk_state - Current state
213 *
214 * RETURN: Status
215 *
216 * DESCRIPTION: Create a new mutex object
217 *
218 * Mutex (Name[0], sync_level[1])
219 *
220 ******************************************************************************/
221
222acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state)
223{
224 acpi_status status = AE_OK;
225 union acpi_operand_object *obj_desc;
226
227 ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS);
228
229 /* Create the new mutex object */
230
231 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
232 if (!obj_desc) {
233 status = AE_NO_MEMORY;
234 goto cleanup;
235 }
236
237 /* Create the actual OS Mutex */
238
239 status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex);
240 if (ACPI_FAILURE(status)) {
241 goto cleanup;
242 }
243
244 /* Init object and attach to NS node */
245
246 obj_desc->mutex.sync_level =
247 (u8) walk_state->operands[1]->integer.value;
248 obj_desc->mutex.node =
249 (struct acpi_namespace_node *)walk_state->operands[0];
250
251 status =
252 acpi_ns_attach_object(obj_desc->mutex.node, obj_desc,
253 ACPI_TYPE_MUTEX);
254
255 cleanup:
256 /*
257 * Remove local reference to the object (on error, will cause deletion
258 * of both object and semaphore if present.)
259 */
260 acpi_ut_remove_reference(obj_desc);
261 return_ACPI_STATUS(status);
262}
263
264/*******************************************************************************
265 *
266 * FUNCTION: acpi_ex_create_region
267 *
268 * PARAMETERS: aml_start - Pointer to the region declaration AML
269 * aml_length - Max length of the declaration AML
270 * region_space - space_iD for the region
271 * walk_state - Current state
272 *
273 * RETURN: Status
274 *
275 * DESCRIPTION: Create a new operation region object
276 *
277 ******************************************************************************/
278
279acpi_status
280acpi_ex_create_region(u8 * aml_start,
281 u32 aml_length,
282 u8 region_space, struct acpi_walk_state *walk_state)
283{
284 acpi_status status;
285 union acpi_operand_object *obj_desc;
286 struct acpi_namespace_node *node;
287 union acpi_operand_object *region_obj2;
288
289 ACPI_FUNCTION_TRACE(ex_create_region);
290
291 /* Get the Namespace Node */
292
293 node = walk_state->op->common.node;
294
295 /*
296 * If the region object is already attached to this node,
297 * just return
298 */
299 if (acpi_ns_get_attached_object(node)) {
300 return_ACPI_STATUS(AE_OK);
301 }
302
303 /*
304 * Space ID must be one of the predefined IDs, or in the user-defined
305 * range
306 */
307 if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) &&
308 (region_space < ACPI_USER_REGION_BEGIN) &&
309 (region_space != ACPI_ADR_SPACE_DATA_TABLE)) {
310 ACPI_ERROR((AE_INFO, "Invalid AddressSpace type 0x%X",
311 region_space));
312 return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
313 }
314
315 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
316 acpi_ut_get_region_name(region_space), region_space));
317
318 /* Create the region descriptor */
319
320 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
321 if (!obj_desc) {
322 status = AE_NO_MEMORY;
323 goto cleanup;
324 }
325
326 /*
327 * Remember location in AML stream of address & length
328 * operands since they need to be evaluated at run time.
329 */
330 region_obj2 = obj_desc->common.next_object;
331 region_obj2->extra.aml_start = aml_start;
332 region_obj2->extra.aml_length = aml_length;
333
334 /* Init the region from the operands */
335
336 obj_desc->region.space_id = region_space;
337 obj_desc->region.address = 0;
338 obj_desc->region.length = 0;
339 obj_desc->region.node = node;
340
341 /* Install the new region object in the parent Node */
342
343 status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
344
345 cleanup:
346
347 /* Remove local reference to the object */
348
349 acpi_ut_remove_reference(obj_desc);
350 return_ACPI_STATUS(status);
351}
352
353/*******************************************************************************
354 *
355 * FUNCTION: acpi_ex_create_processor
356 *
357 * PARAMETERS: walk_state - Current state
358 *
359 * RETURN: Status
360 *
361 * DESCRIPTION: Create a new processor object and populate the fields
362 *
363 * Processor (Name[0], cpu_iD[1], pblock_addr[2], pblock_length[3])
364 *
365 ******************************************************************************/
366
367acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state)
368{
369 union acpi_operand_object **operand = &walk_state->operands[0];
370 union acpi_operand_object *obj_desc;
371 acpi_status status;
372
373 ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state);
374
375 /* Create the processor object */
376
377 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR);
378 if (!obj_desc) {
379 return_ACPI_STATUS(AE_NO_MEMORY);
380 }
381
382 /* Initialize the processor object from the operands */
383
384 obj_desc->processor.proc_id = (u8) operand[1]->integer.value;
385 obj_desc->processor.length = (u8) operand[3]->integer.value;
386 obj_desc->processor.address =
387 (acpi_io_address) operand[2]->integer.value;
388
389 /* Install the processor object in the parent Node */
390
391 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
392 obj_desc, ACPI_TYPE_PROCESSOR);
393
394 /* Remove local reference to the object */
395
396 acpi_ut_remove_reference(obj_desc);
397 return_ACPI_STATUS(status);
398}
399
400/*******************************************************************************
401 *
402 * FUNCTION: acpi_ex_create_power_resource
403 *
404 * PARAMETERS: walk_state - Current state
405 *
406 * RETURN: Status
407 *
408 * DESCRIPTION: Create a new power_resource object and populate the fields
409 *
410 * power_resource (Name[0], system_level[1], resource_order[2])
411 *
412 ******************************************************************************/
413
414acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state)
415{
416 union acpi_operand_object **operand = &walk_state->operands[0];
417 acpi_status status;
418 union acpi_operand_object *obj_desc;
419
420 ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state);
421
422 /* Create the power resource object */
423
424 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER);
425 if (!obj_desc) {
426 return_ACPI_STATUS(AE_NO_MEMORY);
427 }
428
429 /* Initialize the power object from the operands */
430
431 obj_desc->power_resource.system_level = (u8) operand[1]->integer.value;
432 obj_desc->power_resource.resource_order =
433 (u16) operand[2]->integer.value;
434
435 /* Install the power resource object in the parent Node */
436
437 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
438 obj_desc, ACPI_TYPE_POWER);
439
440 /* Remove local reference to the object */
441
442 acpi_ut_remove_reference(obj_desc);
443 return_ACPI_STATUS(status);
444}
445#endif
446
447/*******************************************************************************
448 *
449 * FUNCTION: acpi_ex_create_method
450 *
451 * PARAMETERS: aml_start - First byte of the method's AML
452 * aml_length - AML byte count for this method
453 * walk_state - Current state
454 *
455 * RETURN: Status
456 *
457 * DESCRIPTION: Create a new method object
458 *
459 ******************************************************************************/
460
461acpi_status
462acpi_ex_create_method(u8 * aml_start,
463 u32 aml_length, struct acpi_walk_state *walk_state)
464{
465 union acpi_operand_object **operand = &walk_state->operands[0];
466 union acpi_operand_object *obj_desc;
467 acpi_status status;
468 u8 method_flags;
469
470 ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state);
471
472 /* Create a new method object */
473
474 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
475 if (!obj_desc) {
476 status = AE_NO_MEMORY;
477 goto exit;
478 }
479
480 /* Save the method's AML pointer and length */
481
482 obj_desc->method.aml_start = aml_start;
483 obj_desc->method.aml_length = aml_length;
484
485 /*
486 * Disassemble the method flags. Split off the arg_count, Serialized
487 * flag, and sync_level for efficiency.
488 */
489 method_flags = (u8) operand[1]->integer.value;
490
491 obj_desc->method.param_count =
492 (u8) (method_flags & AML_METHOD_ARG_COUNT);
493
494 /*
495 * Get the sync_level. If method is serialized, a mutex will be
496 * created for this method when it is parsed.
497 */
498 if (method_flags & AML_METHOD_SERIALIZED) {
499 obj_desc->method.info_flags = ACPI_METHOD_SERIALIZED;
500
501 /*
502 * ACPI 1.0: sync_level = 0
503 * ACPI 2.0: sync_level = sync_level in method declaration
504 */
505 obj_desc->method.sync_level = (u8)
506 ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4);
507 }
508
509 /* Attach the new object to the method Node */
510
511 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
512 obj_desc, ACPI_TYPE_METHOD);
513
514 /* Remove local reference to the object */
515
516 acpi_ut_remove_reference(obj_desc);
517
518 exit:
519 /* Remove a reference to the operand */
520
521 acpi_ut_remove_reference(operand[1]);
522 return_ACPI_STATUS(status);
523}
1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2/******************************************************************************
3 *
4 * Module Name: excreate - Named object creation
5 *
6 * Copyright (C) 2000 - 2019, Intel Corp.
7 *
8 *****************************************************************************/
9
10#include <acpi/acpi.h>
11#include "accommon.h"
12#include "acinterp.h"
13#include "amlcode.h"
14#include "acnamesp.h"
15
16#define _COMPONENT ACPI_EXECUTER
17ACPI_MODULE_NAME("excreate")
18/*******************************************************************************
19 *
20 * FUNCTION: acpi_ex_create_alias
21 *
22 * PARAMETERS: walk_state - Current state, contains operands
23 *
24 * RETURN: Status
25 *
26 * DESCRIPTION: Create a new named alias
27 *
28 ******************************************************************************/
29acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
30{
31 struct acpi_namespace_node *target_node;
32 struct acpi_namespace_node *alias_node;
33 acpi_status status = AE_OK;
34
35 ACPI_FUNCTION_TRACE(ex_create_alias);
36
37 /* Get the source/alias operands (both namespace nodes) */
38
39 alias_node = (struct acpi_namespace_node *)walk_state->operands[0];
40 target_node = (struct acpi_namespace_node *)walk_state->operands[1];
41
42 if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) ||
43 (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
44 /*
45 * Dereference an existing alias so that we don't create a chain
46 * of aliases. With this code, we guarantee that an alias is
47 * always exactly one level of indirection away from the
48 * actual aliased name.
49 */
50 target_node =
51 ACPI_CAST_PTR(struct acpi_namespace_node,
52 target_node->object);
53 }
54
55 /* Ensure that the target node is valid */
56
57 if (!target_node) {
58 return_ACPI_STATUS(AE_NULL_OBJECT);
59 }
60
61 /* Construct the alias object (a namespace node) */
62
63 switch (target_node->type) {
64 case ACPI_TYPE_METHOD:
65 /*
66 * Control method aliases need to be differentiated with
67 * a special type
68 */
69 alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
70 break;
71
72 default:
73 /*
74 * All other object types.
75 *
76 * The new alias has the type ALIAS and points to the original
77 * NS node, not the object itself.
78 */
79 alias_node->type = ACPI_TYPE_LOCAL_ALIAS;
80 alias_node->object =
81 ACPI_CAST_PTR(union acpi_operand_object, target_node);
82 break;
83 }
84
85 /* Since both operands are Nodes, we don't need to delete them */
86
87 alias_node->object =
88 ACPI_CAST_PTR(union acpi_operand_object, target_node);
89 return_ACPI_STATUS(status);
90}
91
92/*******************************************************************************
93 *
94 * FUNCTION: acpi_ex_create_event
95 *
96 * PARAMETERS: walk_state - Current state
97 *
98 * RETURN: Status
99 *
100 * DESCRIPTION: Create a new event object
101 *
102 ******************************************************************************/
103
104acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state)
105{
106 acpi_status status;
107 union acpi_operand_object *obj_desc;
108
109 ACPI_FUNCTION_TRACE(ex_create_event);
110
111 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT);
112 if (!obj_desc) {
113 status = AE_NO_MEMORY;
114 goto cleanup;
115 }
116
117 /*
118 * Create the actual OS semaphore, with zero initial units -- meaning
119 * that the event is created in an unsignalled state
120 */
121 status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
122 &obj_desc->event.os_semaphore);
123 if (ACPI_FAILURE(status)) {
124 goto cleanup;
125 }
126
127 /* Attach object to the Node */
128
129 status = acpi_ns_attach_object((struct acpi_namespace_node *)
130 walk_state->operands[0], obj_desc,
131 ACPI_TYPE_EVENT);
132
133cleanup:
134 /*
135 * Remove local reference to the object (on error, will cause deletion
136 * of both object and semaphore if present.)
137 */
138 acpi_ut_remove_reference(obj_desc);
139 return_ACPI_STATUS(status);
140}
141
142/*******************************************************************************
143 *
144 * FUNCTION: acpi_ex_create_mutex
145 *
146 * PARAMETERS: walk_state - Current state
147 *
148 * RETURN: Status
149 *
150 * DESCRIPTION: Create a new mutex object
151 *
152 * Mutex (Name[0], sync_level[1])
153 *
154 ******************************************************************************/
155
156acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state)
157{
158 acpi_status status = AE_OK;
159 union acpi_operand_object *obj_desc;
160
161 ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS);
162
163 /* Create the new mutex object */
164
165 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
166 if (!obj_desc) {
167 status = AE_NO_MEMORY;
168 goto cleanup;
169 }
170
171 /* Create the actual OS Mutex */
172
173 status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex);
174 if (ACPI_FAILURE(status)) {
175 goto cleanup;
176 }
177
178 /* Init object and attach to NS node */
179
180 obj_desc->mutex.sync_level = (u8)walk_state->operands[1]->integer.value;
181 obj_desc->mutex.node =
182 (struct acpi_namespace_node *)walk_state->operands[0];
183
184 status =
185 acpi_ns_attach_object(obj_desc->mutex.node, obj_desc,
186 ACPI_TYPE_MUTEX);
187
188cleanup:
189 /*
190 * Remove local reference to the object (on error, will cause deletion
191 * of both object and semaphore if present.)
192 */
193 acpi_ut_remove_reference(obj_desc);
194 return_ACPI_STATUS(status);
195}
196
197/*******************************************************************************
198 *
199 * FUNCTION: acpi_ex_create_region
200 *
201 * PARAMETERS: aml_start - Pointer to the region declaration AML
202 * aml_length - Max length of the declaration AML
203 * space_id - Address space ID for the region
204 * walk_state - Current state
205 *
206 * RETURN: Status
207 *
208 * DESCRIPTION: Create a new operation region object
209 *
210 ******************************************************************************/
211
212acpi_status
213acpi_ex_create_region(u8 * aml_start,
214 u32 aml_length,
215 u8 space_id, struct acpi_walk_state *walk_state)
216{
217 acpi_status status;
218 union acpi_operand_object *obj_desc;
219 struct acpi_namespace_node *node;
220 union acpi_operand_object *region_obj2;
221
222 ACPI_FUNCTION_TRACE(ex_create_region);
223
224 /* Get the Namespace Node */
225
226 node = walk_state->op->common.node;
227
228 /*
229 * If the region object is already attached to this node,
230 * just return
231 */
232 if (acpi_ns_get_attached_object(node)) {
233 return_ACPI_STATUS(AE_OK);
234 }
235
236 /*
237 * Space ID must be one of the predefined IDs, or in the user-defined
238 * range
239 */
240 if (!acpi_is_valid_space_id(space_id)) {
241 /*
242 * Print an error message, but continue. We don't want to abort
243 * a table load for this exception. Instead, if the region is
244 * actually used at runtime, abort the executing method.
245 */
246 ACPI_ERROR((AE_INFO,
247 "Invalid/unknown Address Space ID: 0x%2.2X",
248 space_id));
249 }
250
251 ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
252 acpi_ut_get_region_name(space_id), space_id));
253
254 /* Create the region descriptor */
255
256 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
257 if (!obj_desc) {
258 status = AE_NO_MEMORY;
259 goto cleanup;
260 }
261
262 /*
263 * Remember location in AML stream of address & length
264 * operands since they need to be evaluated at run time.
265 */
266 region_obj2 = acpi_ns_get_secondary_object(obj_desc);
267 region_obj2->extra.aml_start = aml_start;
268 region_obj2->extra.aml_length = aml_length;
269 region_obj2->extra.method_REG = NULL;
270 if (walk_state->scope_info) {
271 region_obj2->extra.scope_node =
272 walk_state->scope_info->scope.node;
273 } else {
274 region_obj2->extra.scope_node = node;
275 }
276
277 /* Init the region from the operands */
278
279 obj_desc->region.space_id = space_id;
280 obj_desc->region.address = 0;
281 obj_desc->region.length = 0;
282 obj_desc->region.node = node;
283 obj_desc->region.handler = NULL;
284 obj_desc->common.flags &=
285 ~(AOPOBJ_SETUP_COMPLETE | AOPOBJ_REG_CONNECTED |
286 AOPOBJ_OBJECT_INITIALIZED);
287
288 /* Install the new region object in the parent Node */
289
290 status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
291
292cleanup:
293
294 /* Remove local reference to the object */
295
296 acpi_ut_remove_reference(obj_desc);
297 return_ACPI_STATUS(status);
298}
299
300/*******************************************************************************
301 *
302 * FUNCTION: acpi_ex_create_processor
303 *
304 * PARAMETERS: walk_state - Current state
305 *
306 * RETURN: Status
307 *
308 * DESCRIPTION: Create a new processor object and populate the fields
309 *
310 * Processor (Name[0], cpu_ID[1], pblock_addr[2], pblock_length[3])
311 *
312 ******************************************************************************/
313
314acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state)
315{
316 union acpi_operand_object **operand = &walk_state->operands[0];
317 union acpi_operand_object *obj_desc;
318 acpi_status status;
319
320 ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state);
321
322 /* Create the processor object */
323
324 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR);
325 if (!obj_desc) {
326 return_ACPI_STATUS(AE_NO_MEMORY);
327 }
328
329 /* Initialize the processor object from the operands */
330
331 obj_desc->processor.proc_id = (u8) operand[1]->integer.value;
332 obj_desc->processor.length = (u8) operand[3]->integer.value;
333 obj_desc->processor.address =
334 (acpi_io_address)operand[2]->integer.value;
335
336 /* Install the processor object in the parent Node */
337
338 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
339 obj_desc, ACPI_TYPE_PROCESSOR);
340
341 /* Remove local reference to the object */
342
343 acpi_ut_remove_reference(obj_desc);
344 return_ACPI_STATUS(status);
345}
346
347/*******************************************************************************
348 *
349 * FUNCTION: acpi_ex_create_power_resource
350 *
351 * PARAMETERS: walk_state - Current state
352 *
353 * RETURN: Status
354 *
355 * DESCRIPTION: Create a new power_resource object and populate the fields
356 *
357 * power_resource (Name[0], system_level[1], resource_order[2])
358 *
359 ******************************************************************************/
360
361acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state)
362{
363 union acpi_operand_object **operand = &walk_state->operands[0];
364 acpi_status status;
365 union acpi_operand_object *obj_desc;
366
367 ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state);
368
369 /* Create the power resource object */
370
371 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER);
372 if (!obj_desc) {
373 return_ACPI_STATUS(AE_NO_MEMORY);
374 }
375
376 /* Initialize the power object from the operands */
377
378 obj_desc->power_resource.system_level = (u8) operand[1]->integer.value;
379 obj_desc->power_resource.resource_order =
380 (u16) operand[2]->integer.value;
381
382 /* Install the power resource object in the parent Node */
383
384 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
385 obj_desc, ACPI_TYPE_POWER);
386
387 /* Remove local reference to the object */
388
389 acpi_ut_remove_reference(obj_desc);
390 return_ACPI_STATUS(status);
391}
392
393/*******************************************************************************
394 *
395 * FUNCTION: acpi_ex_create_method
396 *
397 * PARAMETERS: aml_start - First byte of the method's AML
398 * aml_length - AML byte count for this method
399 * walk_state - Current state
400 *
401 * RETURN: Status
402 *
403 * DESCRIPTION: Create a new method object
404 *
405 ******************************************************************************/
406
407acpi_status
408acpi_ex_create_method(u8 * aml_start,
409 u32 aml_length, struct acpi_walk_state *walk_state)
410{
411 union acpi_operand_object **operand = &walk_state->operands[0];
412 union acpi_operand_object *obj_desc;
413 acpi_status status;
414 u8 method_flags;
415
416 ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state);
417
418 /* Create a new method object */
419
420 obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
421 if (!obj_desc) {
422 status = AE_NO_MEMORY;
423 goto exit;
424 }
425
426 /* Save the method's AML pointer and length */
427
428 obj_desc->method.aml_start = aml_start;
429 obj_desc->method.aml_length = aml_length;
430 obj_desc->method.node = operand[0];
431
432 /*
433 * Disassemble the method flags. Split off the arg_count, Serialized
434 * flag, and sync_level for efficiency.
435 */
436 method_flags = (u8)operand[1]->integer.value;
437 obj_desc->method.param_count = (u8)
438 (method_flags & AML_METHOD_ARG_COUNT);
439
440 /*
441 * Get the sync_level. If method is serialized, a mutex will be
442 * created for this method when it is parsed.
443 */
444 if (method_flags & AML_METHOD_SERIALIZED) {
445 obj_desc->method.info_flags = ACPI_METHOD_SERIALIZED;
446
447 /*
448 * ACPI 1.0: sync_level = 0
449 * ACPI 2.0: sync_level = sync_level in method declaration
450 */
451 obj_desc->method.sync_level = (u8)
452 ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4);
453 }
454
455 /* Attach the new object to the method Node */
456
457 status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
458 obj_desc, ACPI_TYPE_METHOD);
459
460 /* Remove local reference to the object */
461
462 acpi_ut_remove_reference(obj_desc);
463
464exit:
465 /* Remove a reference to the operand */
466
467 acpi_ut_remove_reference(operand[1]);
468 return_ACPI_STATUS(status);
469}