Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: excreate - Named object creation | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
82a80941 | 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
1da177e4 LT |
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 | ||
1da177e4 | 44 | #include <acpi/acpi.h> |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acinterp.h" | |
47 | #include "amlcode.h" | |
48 | #include "acnamesp.h" | |
1da177e4 | 49 | |
1da177e4 | 50 | #define _COMPONENT ACPI_EXECUTER |
4be44fcd | 51 | ACPI_MODULE_NAME("excreate") |
1da177e4 | 52 | #ifndef ACPI_NO_METHOD_EXECUTION |
44f6c012 | 53 | /******************************************************************************* |
1da177e4 LT |
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 | * | |
44f6c012 | 63 | ******************************************************************************/ |
4be44fcd | 64 | acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state) |
1da177e4 | 65 | { |
4be44fcd LB |
66 | struct acpi_namespace_node *target_node; |
67 | struct acpi_namespace_node *alias_node; | |
68 | acpi_status status = AE_OK; | |
1da177e4 | 69 | |
b229cf92 | 70 | ACPI_FUNCTION_TRACE(ex_create_alias); |
1da177e4 LT |
71 | |
72 | /* Get the source/alias operands (both namespace nodes) */ | |
73 | ||
4be44fcd LB |
74 | alias_node = (struct acpi_namespace_node *)walk_state->operands[0]; |
75 | target_node = (struct acpi_namespace_node *)walk_state->operands[1]; | |
1da177e4 LT |
76 | |
77 | if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) || | |
4be44fcd | 78 | (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) { |
1da177e4 LT |
79 | /* |
80 | * Dereference an existing alias so that we don't create a chain | |
73a3090a | 81 | * of aliases. With this code, we guarantee that an alias is |
1da177e4 LT |
82 | * always exactly one level of indirection away from the |
83 | * actual aliased name. | |
84 | */ | |
4be44fcd LB |
85 | target_node = |
86 | ACPI_CAST_PTR(struct acpi_namespace_node, | |
87 | target_node->object); | |
1da177e4 LT |
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 | |
73a3090a | 93 | * the object to the new NS node. For other objects (such as |
1da177e4 LT |
94 | * Integers, buffers, etc.), we have to point the Alias node |
95 | * to the original Node. | |
96 | */ | |
97 | switch (target_node->type) { | |
53cf1744 BM |
98 | |
99 | /* For these types, the sub-object can change dynamically via a Store */ | |
100 | ||
1da177e4 LT |
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: | |
53cf1744 BM |
106 | /* |
107 | * 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: | |
1da177e4 LT |
115 | /* |
116 | * The new alias has the type ALIAS and points to the original | |
53cf1744 | 117 | * NS node, not the object itself. |
1da177e4 LT |
118 | */ |
119 | alias_node->type = ACPI_TYPE_LOCAL_ALIAS; | |
4be44fcd LB |
120 | alias_node->object = |
121 | ACPI_CAST_PTR(union acpi_operand_object, target_node); | |
1da177e4 LT |
122 | break; |
123 | ||
124 | case ACPI_TYPE_METHOD: | |
1da177e4 | 125 | /* |
53cf1744 | 126 | * Control method aliases need to be differentiated |
1da177e4 LT |
127 | */ |
128 | alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS; | |
4be44fcd LB |
129 | alias_node->object = |
130 | ACPI_CAST_PTR(union acpi_operand_object, target_node); | |
1da177e4 LT |
131 | 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 | |
73a3090a | 139 | * to the same object. The reference count of the object has an |
1da177e4 LT |
140 | * additional reference to prevent deletion out from under either the |
141 | * target node or the alias Node | |
142 | */ | |
4be44fcd LB |
143 | status = acpi_ns_attach_object(alias_node, |
144 | acpi_ns_get_attached_object | |
145 | (target_node), | |
146 | target_node->type); | |
1da177e4 LT |
147 | break; |
148 | } | |
149 | ||
150 | /* Since both operands are Nodes, we don't need to delete them */ | |
151 | ||
4be44fcd | 152 | return_ACPI_STATUS(status); |
1da177e4 LT |
153 | } |
154 | ||
44f6c012 | 155 | /******************************************************************************* |
1da177e4 LT |
156 | * |
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 | * | |
44f6c012 | 165 | ******************************************************************************/ |
1da177e4 | 166 | |
4be44fcd | 167 | acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state) |
1da177e4 | 168 | { |
4be44fcd LB |
169 | acpi_status status; |
170 | union acpi_operand_object *obj_desc; | |
1da177e4 | 171 | |
b229cf92 | 172 | ACPI_FUNCTION_TRACE(ex_create_event); |
1da177e4 | 173 | |
4be44fcd | 174 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT); |
1da177e4 LT |
175 | 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 | */ | |
4be44fcd | 184 | status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, |
967440e3 | 185 | &obj_desc->event.os_semaphore); |
4be44fcd | 186 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
187 | goto cleanup; |
188 | } | |
189 | ||
190 | /* Attach object to the Node */ | |
191 | ||
4be44fcd LB |
192 | status = |
193 | acpi_ns_attach_object((struct acpi_namespace_node *)walk_state-> | |
194 | operands[0], obj_desc, ACPI_TYPE_EVENT); | |
1da177e4 | 195 | |
10622bf8 | 196 | cleanup: |
1da177e4 LT |
197 | /* |
198 | * Remove local reference to the object (on error, will cause deletion | |
199 | * of both object and semaphore if present.) | |
200 | */ | |
4be44fcd LB |
201 | acpi_ut_remove_reference(obj_desc); |
202 | return_ACPI_STATUS(status); | |
1da177e4 LT |
203 | } |
204 | ||
44f6c012 | 205 | /******************************************************************************* |
1da177e4 LT |
206 | * |
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 | * | |
44f6c012 | 217 | ******************************************************************************/ |
1da177e4 | 218 | |
4be44fcd | 219 | acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state) |
1da177e4 | 220 | { |
4be44fcd LB |
221 | acpi_status status = AE_OK; |
222 | union acpi_operand_object *obj_desc; | |
1da177e4 | 223 | |
b229cf92 | 224 | ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS); |
1da177e4 LT |
225 | |
226 | /* Create the new mutex object */ | |
227 | ||
4be44fcd | 228 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX); |
1da177e4 LT |
229 | if (!obj_desc) { |
230 | status = AE_NO_MEMORY; | |
231 | goto cleanup; | |
232 | } | |
233 | ||
967440e3 BM |
234 | /* Create the actual OS Mutex */ |
235 | ||
236 | status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex); | |
4be44fcd | 237 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
238 | goto cleanup; |
239 | } | |
240 | ||
241 | /* Init object and attach to NS node */ | |
242 | ||
1f86e8c1 | 243 | obj_desc->mutex.sync_level = (u8)walk_state->operands[1]->integer.value; |
4be44fcd LB |
244 | obj_desc->mutex.node = |
245 | (struct acpi_namespace_node *)walk_state->operands[0]; | |
1da177e4 | 246 | |
61686124 BM |
247 | status = |
248 | acpi_ns_attach_object(obj_desc->mutex.node, obj_desc, | |
249 | ACPI_TYPE_MUTEX); | |
1da177e4 | 250 | |
10622bf8 | 251 | cleanup: |
1da177e4 LT |
252 | /* |
253 | * Remove local reference to the object (on error, will cause deletion | |
254 | * of both object and semaphore if present.) | |
255 | */ | |
4be44fcd LB |
256 | acpi_ut_remove_reference(obj_desc); |
257 | return_ACPI_STATUS(status); | |
1da177e4 LT |
258 | } |
259 | ||
44f6c012 | 260 | /******************************************************************************* |
1da177e4 LT |
261 | * |
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 | |
ec463666 | 266 | * space_id - Address space ID for the region |
1da177e4 LT |
267 | * walk_state - Current state |
268 | * | |
269 | * RETURN: Status | |
270 | * | |
271 | * DESCRIPTION: Create a new operation region object | |
272 | * | |
44f6c012 | 273 | ******************************************************************************/ |
1da177e4 LT |
274 | |
275 | acpi_status | |
4be44fcd LB |
276 | acpi_ex_create_region(u8 * aml_start, |
277 | u32 aml_length, | |
ec463666 | 278 | u8 space_id, struct acpi_walk_state *walk_state) |
1da177e4 | 279 | { |
4be44fcd LB |
280 | acpi_status status; |
281 | union acpi_operand_object *obj_desc; | |
282 | struct acpi_namespace_node *node; | |
283 | union acpi_operand_object *region_obj2; | |
1da177e4 | 284 | |
b229cf92 | 285 | ACPI_FUNCTION_TRACE(ex_create_region); |
1da177e4 LT |
286 | |
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 | */ | |
4be44fcd LB |
295 | if (acpi_ns_get_attached_object(node)) { |
296 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
297 | } |
298 | ||
299 | /* | |
300 | * Space ID must be one of the predefined IDs, or in the user-defined | |
301 | * range | |
302 | */ | |
ec463666 BM |
303 | 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)); | |
1da177e4 LT |
312 | } |
313 | ||
f6a22b0b | 314 | ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n", |
ec463666 | 315 | acpi_ut_get_region_name(space_id), space_id)); |
1da177e4 LT |
316 | |
317 | /* Create the region descriptor */ | |
318 | ||
4be44fcd | 319 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION); |
1da177e4 LT |
320 | 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 | */ | |
4be44fcd | 329 | region_obj2 = obj_desc->common.next_object; |
1da177e4 LT |
330 | region_obj2->extra.aml_start = aml_start; |
331 | region_obj2->extra.aml_length = aml_length; | |
8931d9ea LM |
332 | 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 | } | |
1da177e4 LT |
338 | |
339 | /* Init the region from the operands */ | |
340 | ||
ec463666 | 341 | obj_desc->region.space_id = space_id; |
1da177e4 LT |
342 | obj_desc->region.address = 0; |
343 | obj_desc->region.length = 0; | |
4be44fcd | 344 | obj_desc->region.node = node; |
1da177e4 LT |
345 | |
346 | /* Install the new region object in the parent Node */ | |
347 | ||
4be44fcd | 348 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION); |
1da177e4 | 349 | |
10622bf8 | 350 | cleanup: |
1da177e4 LT |
351 | |
352 | /* Remove local reference to the object */ | |
353 | ||
4be44fcd LB |
354 | acpi_ut_remove_reference(obj_desc); |
355 | return_ACPI_STATUS(status); | |
1da177e4 LT |
356 | } |
357 | ||
44f6c012 | 358 | /******************************************************************************* |
1da177e4 LT |
359 | * |
360 | * 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 | * | |
ba494bee | 368 | * Processor (Name[0], cpu_ID[1], pblock_addr[2], pblock_length[3]) |
1da177e4 | 369 | * |
44f6c012 | 370 | ******************************************************************************/ |
1da177e4 | 371 | |
4be44fcd | 372 | acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state) |
1da177e4 | 373 | { |
4be44fcd LB |
374 | union acpi_operand_object **operand = &walk_state->operands[0]; |
375 | union acpi_operand_object *obj_desc; | |
376 | acpi_status status; | |
1da177e4 | 377 | |
b229cf92 | 378 | ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state); |
1da177e4 LT |
379 | |
380 | /* Create the processor object */ | |
381 | ||
4be44fcd | 382 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR); |
1da177e4 | 383 | if (!obj_desc) { |
4be44fcd | 384 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
385 | } |
386 | ||
44f6c012 RM |
387 | /* Initialize the processor object from the operands */ |
388 | ||
4be44fcd | 389 | obj_desc->processor.proc_id = (u8) operand[1]->integer.value; |
61686124 | 390 | obj_desc->processor.length = (u8) operand[3]->integer.value; |
4be44fcd LB |
391 | obj_desc->processor.address = |
392 | (acpi_io_address) operand[2]->integer.value; | |
1da177e4 LT |
393 | |
394 | /* Install the processor object in the parent Node */ | |
395 | ||
4be44fcd LB |
396 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
397 | obj_desc, ACPI_TYPE_PROCESSOR); | |
1da177e4 LT |
398 | |
399 | /* Remove local reference to the object */ | |
400 | ||
4be44fcd LB |
401 | acpi_ut_remove_reference(obj_desc); |
402 | return_ACPI_STATUS(status); | |
1da177e4 LT |
403 | } |
404 | ||
44f6c012 | 405 | /******************************************************************************* |
1da177e4 LT |
406 | * |
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 | * | |
44f6c012 | 417 | ******************************************************************************/ |
1da177e4 | 418 | |
4be44fcd | 419 | acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state) |
1da177e4 | 420 | { |
4be44fcd LB |
421 | union acpi_operand_object **operand = &walk_state->operands[0]; |
422 | acpi_status status; | |
423 | union acpi_operand_object *obj_desc; | |
1da177e4 | 424 | |
b229cf92 | 425 | ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state); |
1da177e4 LT |
426 | |
427 | /* Create the power resource object */ | |
428 | ||
4be44fcd | 429 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER); |
1da177e4 | 430 | if (!obj_desc) { |
4be44fcd | 431 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
432 | } |
433 | ||
434 | /* Initialize the power object from the operands */ | |
435 | ||
436 | obj_desc->power_resource.system_level = (u8) operand[1]->integer.value; | |
4be44fcd LB |
437 | obj_desc->power_resource.resource_order = |
438 | (u16) operand[2]->integer.value; | |
1da177e4 LT |
439 | |
440 | /* Install the power resource object in the parent Node */ | |
441 | ||
4be44fcd LB |
442 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
443 | obj_desc, ACPI_TYPE_POWER); | |
1da177e4 LT |
444 | |
445 | /* Remove local reference to the object */ | |
446 | ||
4be44fcd LB |
447 | acpi_ut_remove_reference(obj_desc); |
448 | return_ACPI_STATUS(status); | |
1da177e4 | 449 | } |
1da177e4 LT |
450 | #endif |
451 | ||
44f6c012 | 452 | /******************************************************************************* |
1da177e4 LT |
453 | * |
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 | * | |
44f6c012 | 464 | ******************************************************************************/ |
1da177e4 LT |
465 | |
466 | acpi_status | |
4be44fcd LB |
467 | acpi_ex_create_method(u8 * aml_start, |
468 | u32 aml_length, struct acpi_walk_state *walk_state) | |
1da177e4 | 469 | { |
4be44fcd LB |
470 | union acpi_operand_object **operand = &walk_state->operands[0]; |
471 | union acpi_operand_object *obj_desc; | |
472 | acpi_status status; | |
473 | u8 method_flags; | |
1da177e4 | 474 | |
b229cf92 | 475 | ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state); |
1da177e4 LT |
476 | |
477 | /* Create a new method object */ | |
478 | ||
4be44fcd | 479 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); |
1da177e4 | 480 | if (!obj_desc) { |
f3d2e786 BM |
481 | status = AE_NO_MEMORY; |
482 | goto exit; | |
1da177e4 LT |
483 | } |
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 | /* | |
26294842 LM |
491 | * Disassemble the method flags. Split off the arg_count, Serialized |
492 | * flag, and sync_level for efficiency. | |
1da177e4 LT |
493 | */ |
494 | method_flags = (u8) operand[1]->integer.value; | |
495 | ||
4be44fcd LB |
496 | obj_desc->method.param_count = |
497 | (u8) (method_flags & AML_METHOD_ARG_COUNT); | |
1da177e4 LT |
498 | |
499 | /* | |
967440e3 | 500 | * Get the sync_level. If method is serialized, a mutex will be |
1da177e4 LT |
501 | * created for this method when it is parsed. |
502 | */ | |
4d2acd9e | 503 | if (method_flags & AML_METHOD_SERIALIZED) { |
26294842 LM |
504 | obj_desc->method.info_flags = ACPI_METHOD_SERIALIZED; |
505 | ||
1da177e4 | 506 | /* |
967440e3 BM |
507 | * ACPI 1.0: sync_level = 0 |
508 | * ACPI 2.0: sync_level = sync_level in method declaration | |
1da177e4 | 509 | */ |
967440e3 | 510 | obj_desc->method.sync_level = (u8) |
b2f7ddcf | 511 | ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4); |
1da177e4 LT |
512 | } |
513 | ||
514 | /* Attach the new object to the method Node */ | |
515 | ||
4be44fcd LB |
516 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
517 | obj_desc, ACPI_TYPE_METHOD); | |
1da177e4 LT |
518 | |
519 | /* Remove local reference to the object */ | |
520 | ||
4be44fcd | 521 | acpi_ut_remove_reference(obj_desc); |
1da177e4 | 522 | |
10622bf8 | 523 | exit: |
1da177e4 LT |
524 | /* Remove a reference to the operand */ |
525 | ||
4be44fcd LB |
526 | acpi_ut_remove_reference(operand[1]); |
527 | return_ACPI_STATUS(status); | |
1da177e4 | 528 | } |