Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: excreate - Named object creation | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
77848130 | 8 | * Copyright (C) 2000 - 2012, 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: | |
106 | ||
53cf1744 BM |
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 | ||
1da177e4 LT |
117 | /* |
118 | * The new alias has the type ALIAS and points to the original | |
53cf1744 | 119 | * NS node, not the object itself. |
1da177e4 LT |
120 | */ |
121 | alias_node->type = ACPI_TYPE_LOCAL_ALIAS; | |
4be44fcd LB |
122 | alias_node->object = |
123 | ACPI_CAST_PTR(union acpi_operand_object, target_node); | |
1da177e4 LT |
124 | break; |
125 | ||
126 | case ACPI_TYPE_METHOD: | |
127 | ||
128 | /* | |
53cf1744 | 129 | * Control method aliases need to be differentiated |
1da177e4 LT |
130 | */ |
131 | alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS; | |
4be44fcd LB |
132 | alias_node->object = |
133 | ACPI_CAST_PTR(union acpi_operand_object, target_node); | |
1da177e4 LT |
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 | |
73a3090a | 142 | * to the same object. The reference count of the object has an |
1da177e4 LT |
143 | * additional reference to prevent deletion out from under either the |
144 | * target node or the alias Node | |
145 | */ | |
4be44fcd LB |
146 | status = acpi_ns_attach_object(alias_node, |
147 | acpi_ns_get_attached_object | |
148 | (target_node), | |
149 | target_node->type); | |
1da177e4 LT |
150 | break; |
151 | } | |
152 | ||
153 | /* Since both operands are Nodes, we don't need to delete them */ | |
154 | ||
4be44fcd | 155 | return_ACPI_STATUS(status); |
1da177e4 LT |
156 | } |
157 | ||
44f6c012 | 158 | /******************************************************************************* |
1da177e4 LT |
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 | * | |
44f6c012 | 168 | ******************************************************************************/ |
1da177e4 | 169 | |
4be44fcd | 170 | acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state) |
1da177e4 | 171 | { |
4be44fcd LB |
172 | acpi_status status; |
173 | union acpi_operand_object *obj_desc; | |
1da177e4 | 174 | |
b229cf92 | 175 | ACPI_FUNCTION_TRACE(ex_create_event); |
1da177e4 | 176 | |
4be44fcd | 177 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT); |
1da177e4 LT |
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 | */ | |
4be44fcd | 187 | status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, |
967440e3 | 188 | &obj_desc->event.os_semaphore); |
4be44fcd | 189 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
190 | goto cleanup; |
191 | } | |
192 | ||
193 | /* Attach object to the Node */ | |
194 | ||
4be44fcd LB |
195 | status = |
196 | acpi_ns_attach_object((struct acpi_namespace_node *)walk_state-> | |
197 | operands[0], obj_desc, ACPI_TYPE_EVENT); | |
1da177e4 | 198 | |
4be44fcd | 199 | cleanup: |
1da177e4 LT |
200 | /* |
201 | * Remove local reference to the object (on error, will cause deletion | |
202 | * of both object and semaphore if present.) | |
203 | */ | |
4be44fcd LB |
204 | acpi_ut_remove_reference(obj_desc); |
205 | return_ACPI_STATUS(status); | |
1da177e4 LT |
206 | } |
207 | ||
44f6c012 | 208 | /******************************************************************************* |
1da177e4 LT |
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 | * | |
44f6c012 | 220 | ******************************************************************************/ |
1da177e4 | 221 | |
4be44fcd | 222 | acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state) |
1da177e4 | 223 | { |
4be44fcd LB |
224 | acpi_status status = AE_OK; |
225 | union acpi_operand_object *obj_desc; | |
1da177e4 | 226 | |
b229cf92 | 227 | ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS); |
1da177e4 LT |
228 | |
229 | /* Create the new mutex object */ | |
230 | ||
4be44fcd | 231 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX); |
1da177e4 LT |
232 | if (!obj_desc) { |
233 | status = AE_NO_MEMORY; | |
234 | goto cleanup; | |
235 | } | |
236 | ||
967440e3 BM |
237 | /* Create the actual OS Mutex */ |
238 | ||
239 | status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex); | |
4be44fcd | 240 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
241 | goto cleanup; |
242 | } | |
243 | ||
244 | /* Init object and attach to NS node */ | |
245 | ||
1f86e8c1 | 246 | obj_desc->mutex.sync_level = (u8)walk_state->operands[1]->integer.value; |
4be44fcd LB |
247 | obj_desc->mutex.node = |
248 | (struct acpi_namespace_node *)walk_state->operands[0]; | |
1da177e4 | 249 | |
61686124 BM |
250 | status = |
251 | acpi_ns_attach_object(obj_desc->mutex.node, obj_desc, | |
252 | ACPI_TYPE_MUTEX); | |
1da177e4 | 253 | |
4be44fcd | 254 | cleanup: |
1da177e4 LT |
255 | /* |
256 | * Remove local reference to the object (on error, will cause deletion | |
257 | * of both object and semaphore if present.) | |
258 | */ | |
4be44fcd LB |
259 | acpi_ut_remove_reference(obj_desc); |
260 | return_ACPI_STATUS(status); | |
1da177e4 LT |
261 | } |
262 | ||
44f6c012 | 263 | /******************************************************************************* |
1da177e4 LT |
264 | * |
265 | * FUNCTION: acpi_ex_create_region | |
266 | * | |
267 | * PARAMETERS: aml_start - Pointer to the region declaration AML | |
268 | * aml_length - Max length of the declaration AML | |
ec463666 | 269 | * space_id - Address space ID for the region |
1da177e4 LT |
270 | * walk_state - Current state |
271 | * | |
272 | * RETURN: Status | |
273 | * | |
274 | * DESCRIPTION: Create a new operation region object | |
275 | * | |
44f6c012 | 276 | ******************************************************************************/ |
1da177e4 LT |
277 | |
278 | acpi_status | |
4be44fcd LB |
279 | acpi_ex_create_region(u8 * aml_start, |
280 | u32 aml_length, | |
ec463666 | 281 | u8 space_id, struct acpi_walk_state *walk_state) |
1da177e4 | 282 | { |
4be44fcd LB |
283 | acpi_status status; |
284 | union acpi_operand_object *obj_desc; | |
285 | struct acpi_namespace_node *node; | |
286 | union acpi_operand_object *region_obj2; | |
1da177e4 | 287 | |
b229cf92 | 288 | ACPI_FUNCTION_TRACE(ex_create_region); |
1da177e4 LT |
289 | |
290 | /* Get the Namespace Node */ | |
291 | ||
292 | node = walk_state->op->common.node; | |
293 | ||
294 | /* | |
295 | * If the region object is already attached to this node, | |
296 | * just return | |
297 | */ | |
4be44fcd LB |
298 | if (acpi_ns_get_attached_object(node)) { |
299 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
300 | } |
301 | ||
302 | /* | |
303 | * Space ID must be one of the predefined IDs, or in the user-defined | |
304 | * range | |
305 | */ | |
ec463666 BM |
306 | if (!acpi_is_valid_space_id(space_id)) { |
307 | /* | |
308 | * Print an error message, but continue. We don't want to abort | |
309 | * a table load for this exception. Instead, if the region is | |
310 | * actually used at runtime, abort the executing method. | |
311 | */ | |
312 | ACPI_ERROR((AE_INFO, | |
313 | "Invalid/unknown Address Space ID: 0x%2.2X", | |
314 | space_id)); | |
1da177e4 LT |
315 | } |
316 | ||
f6a22b0b | 317 | ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n", |
ec463666 | 318 | acpi_ut_get_region_name(space_id), space_id)); |
1da177e4 LT |
319 | |
320 | /* Create the region descriptor */ | |
321 | ||
4be44fcd | 322 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION); |
1da177e4 LT |
323 | if (!obj_desc) { |
324 | status = AE_NO_MEMORY; | |
325 | goto cleanup; | |
326 | } | |
327 | ||
328 | /* | |
329 | * Remember location in AML stream of address & length | |
330 | * operands since they need to be evaluated at run time. | |
331 | */ | |
4be44fcd | 332 | region_obj2 = obj_desc->common.next_object; |
1da177e4 LT |
333 | region_obj2->extra.aml_start = aml_start; |
334 | region_obj2->extra.aml_length = aml_length; | |
8931d9ea LM |
335 | if (walk_state->scope_info) { |
336 | region_obj2->extra.scope_node = | |
337 | walk_state->scope_info->scope.node; | |
338 | } else { | |
339 | region_obj2->extra.scope_node = node; | |
340 | } | |
1da177e4 LT |
341 | |
342 | /* Init the region from the operands */ | |
343 | ||
ec463666 | 344 | obj_desc->region.space_id = space_id; |
1da177e4 LT |
345 | obj_desc->region.address = 0; |
346 | obj_desc->region.length = 0; | |
4be44fcd | 347 | obj_desc->region.node = node; |
1da177e4 LT |
348 | |
349 | /* Install the new region object in the parent Node */ | |
350 | ||
4be44fcd | 351 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION); |
1da177e4 | 352 | |
4be44fcd | 353 | cleanup: |
1da177e4 LT |
354 | |
355 | /* Remove local reference to the object */ | |
356 | ||
4be44fcd LB |
357 | acpi_ut_remove_reference(obj_desc); |
358 | return_ACPI_STATUS(status); | |
1da177e4 LT |
359 | } |
360 | ||
44f6c012 | 361 | /******************************************************************************* |
1da177e4 LT |
362 | * |
363 | * FUNCTION: acpi_ex_create_processor | |
364 | * | |
365 | * PARAMETERS: walk_state - Current state | |
366 | * | |
367 | * RETURN: Status | |
368 | * | |
369 | * DESCRIPTION: Create a new processor object and populate the fields | |
370 | * | |
ba494bee | 371 | * Processor (Name[0], cpu_ID[1], pblock_addr[2], pblock_length[3]) |
1da177e4 | 372 | * |
44f6c012 | 373 | ******************************************************************************/ |
1da177e4 | 374 | |
4be44fcd | 375 | acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state) |
1da177e4 | 376 | { |
4be44fcd LB |
377 | union acpi_operand_object **operand = &walk_state->operands[0]; |
378 | union acpi_operand_object *obj_desc; | |
379 | acpi_status status; | |
1da177e4 | 380 | |
b229cf92 | 381 | ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state); |
1da177e4 LT |
382 | |
383 | /* Create the processor object */ | |
384 | ||
4be44fcd | 385 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR); |
1da177e4 | 386 | if (!obj_desc) { |
4be44fcd | 387 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
388 | } |
389 | ||
44f6c012 RM |
390 | /* Initialize the processor object from the operands */ |
391 | ||
4be44fcd | 392 | obj_desc->processor.proc_id = (u8) operand[1]->integer.value; |
61686124 | 393 | obj_desc->processor.length = (u8) operand[3]->integer.value; |
4be44fcd LB |
394 | obj_desc->processor.address = |
395 | (acpi_io_address) operand[2]->integer.value; | |
1da177e4 LT |
396 | |
397 | /* Install the processor object in the parent Node */ | |
398 | ||
4be44fcd LB |
399 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
400 | obj_desc, ACPI_TYPE_PROCESSOR); | |
1da177e4 LT |
401 | |
402 | /* Remove local reference to the object */ | |
403 | ||
4be44fcd LB |
404 | acpi_ut_remove_reference(obj_desc); |
405 | return_ACPI_STATUS(status); | |
1da177e4 LT |
406 | } |
407 | ||
44f6c012 | 408 | /******************************************************************************* |
1da177e4 LT |
409 | * |
410 | * FUNCTION: acpi_ex_create_power_resource | |
411 | * | |
412 | * PARAMETERS: walk_state - Current state | |
413 | * | |
414 | * RETURN: Status | |
415 | * | |
416 | * DESCRIPTION: Create a new power_resource object and populate the fields | |
417 | * | |
418 | * power_resource (Name[0], system_level[1], resource_order[2]) | |
419 | * | |
44f6c012 | 420 | ******************************************************************************/ |
1da177e4 | 421 | |
4be44fcd | 422 | acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state) |
1da177e4 | 423 | { |
4be44fcd LB |
424 | union acpi_operand_object **operand = &walk_state->operands[0]; |
425 | acpi_status status; | |
426 | union acpi_operand_object *obj_desc; | |
1da177e4 | 427 | |
b229cf92 | 428 | ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state); |
1da177e4 LT |
429 | |
430 | /* Create the power resource object */ | |
431 | ||
4be44fcd | 432 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER); |
1da177e4 | 433 | if (!obj_desc) { |
4be44fcd | 434 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
435 | } |
436 | ||
437 | /* Initialize the power object from the operands */ | |
438 | ||
439 | obj_desc->power_resource.system_level = (u8) operand[1]->integer.value; | |
4be44fcd LB |
440 | obj_desc->power_resource.resource_order = |
441 | (u16) operand[2]->integer.value; | |
1da177e4 LT |
442 | |
443 | /* Install the power resource object in the parent Node */ | |
444 | ||
4be44fcd LB |
445 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
446 | obj_desc, ACPI_TYPE_POWER); | |
1da177e4 LT |
447 | |
448 | /* Remove local reference to the object */ | |
449 | ||
4be44fcd LB |
450 | acpi_ut_remove_reference(obj_desc); |
451 | return_ACPI_STATUS(status); | |
1da177e4 | 452 | } |
1da177e4 LT |
453 | #endif |
454 | ||
44f6c012 | 455 | /******************************************************************************* |
1da177e4 LT |
456 | * |
457 | * FUNCTION: acpi_ex_create_method | |
458 | * | |
459 | * PARAMETERS: aml_start - First byte of the method's AML | |
460 | * aml_length - AML byte count for this method | |
461 | * walk_state - Current state | |
462 | * | |
463 | * RETURN: Status | |
464 | * | |
465 | * DESCRIPTION: Create a new method object | |
466 | * | |
44f6c012 | 467 | ******************************************************************************/ |
1da177e4 LT |
468 | |
469 | acpi_status | |
4be44fcd LB |
470 | acpi_ex_create_method(u8 * aml_start, |
471 | u32 aml_length, struct acpi_walk_state *walk_state) | |
1da177e4 | 472 | { |
4be44fcd LB |
473 | union acpi_operand_object **operand = &walk_state->operands[0]; |
474 | union acpi_operand_object *obj_desc; | |
475 | acpi_status status; | |
476 | u8 method_flags; | |
1da177e4 | 477 | |
b229cf92 | 478 | ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state); |
1da177e4 LT |
479 | |
480 | /* Create a new method object */ | |
481 | ||
4be44fcd | 482 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); |
1da177e4 | 483 | if (!obj_desc) { |
f3d2e786 BM |
484 | status = AE_NO_MEMORY; |
485 | goto exit; | |
1da177e4 LT |
486 | } |
487 | ||
488 | /* Save the method's AML pointer and length */ | |
489 | ||
490 | obj_desc->method.aml_start = aml_start; | |
491 | obj_desc->method.aml_length = aml_length; | |
492 | ||
493 | /* | |
26294842 LM |
494 | * Disassemble the method flags. Split off the arg_count, Serialized |
495 | * flag, and sync_level for efficiency. | |
1da177e4 LT |
496 | */ |
497 | method_flags = (u8) operand[1]->integer.value; | |
498 | ||
4be44fcd LB |
499 | obj_desc->method.param_count = |
500 | (u8) (method_flags & AML_METHOD_ARG_COUNT); | |
1da177e4 LT |
501 | |
502 | /* | |
967440e3 | 503 | * Get the sync_level. If method is serialized, a mutex will be |
1da177e4 LT |
504 | * created for this method when it is parsed. |
505 | */ | |
4d2acd9e | 506 | if (method_flags & AML_METHOD_SERIALIZED) { |
26294842 LM |
507 | obj_desc->method.info_flags = ACPI_METHOD_SERIALIZED; |
508 | ||
1da177e4 | 509 | /* |
967440e3 BM |
510 | * ACPI 1.0: sync_level = 0 |
511 | * ACPI 2.0: sync_level = sync_level in method declaration | |
1da177e4 | 512 | */ |
967440e3 | 513 | obj_desc->method.sync_level = (u8) |
b2f7ddcf | 514 | ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4); |
1da177e4 LT |
515 | } |
516 | ||
517 | /* Attach the new object to the method Node */ | |
518 | ||
4be44fcd LB |
519 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
520 | obj_desc, ACPI_TYPE_METHOD); | |
1da177e4 LT |
521 | |
522 | /* Remove local reference to the object */ | |
523 | ||
4be44fcd | 524 | acpi_ut_remove_reference(obj_desc); |
1da177e4 | 525 | |
f3d2e786 | 526 | exit: |
1da177e4 LT |
527 | /* Remove a reference to the operand */ |
528 | ||
4be44fcd LB |
529 | acpi_ut_remove_reference(operand[1]); |
530 | return_ACPI_STATUS(status); | |
1da177e4 | 531 | } |