Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: excreate - Named object creation | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
4a90c7e8 | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
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 LT |
44 | #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 | ||
1da177e4 | 51 | #define _COMPONENT ACPI_EXECUTER |
4be44fcd | 52 | ACPI_MODULE_NAME("excreate") |
1da177e4 LT |
53 | |
54 | #ifndef ACPI_NO_METHOD_EXECUTION | |
44f6c012 | 55 | /******************************************************************************* |
1da177e4 LT |
56 | * |
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 | * | |
44f6c012 | 65 | ******************************************************************************/ |
4be44fcd | 66 | acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state) |
1da177e4 | 67 | { |
4be44fcd LB |
68 | struct acpi_namespace_node *target_node; |
69 | struct acpi_namespace_node *alias_node; | |
70 | acpi_status status = AE_OK; | |
1da177e4 | 71 | |
b229cf92 | 72 | ACPI_FUNCTION_TRACE(ex_create_alias); |
1da177e4 LT |
73 | |
74 | /* Get the source/alias operands (both namespace nodes) */ | |
75 | ||
4be44fcd LB |
76 | alias_node = (struct acpi_namespace_node *)walk_state->operands[0]; |
77 | target_node = (struct acpi_namespace_node *)walk_state->operands[1]; | |
1da177e4 LT |
78 | |
79 | if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) || | |
4be44fcd | 80 | (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) { |
1da177e4 LT |
81 | /* |
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 | */ | |
4be44fcd LB |
87 | target_node = |
88 | ACPI_CAST_PTR(struct acpi_namespace_node, | |
89 | target_node->object); | |
1da177e4 LT |
90 | } |
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; | |
4be44fcd LB |
112 | alias_node->object = |
113 | ACPI_CAST_PTR(union acpi_operand_object, target_node); | |
1da177e4 LT |
114 | 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; | |
4be44fcd LB |
124 | alias_node->object = |
125 | ACPI_CAST_PTR(union acpi_operand_object, target_node); | |
1da177e4 LT |
126 | 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 | */ | |
4be44fcd LB |
138 | status = acpi_ns_attach_object(alias_node, |
139 | acpi_ns_get_attached_object | |
140 | (target_node), | |
141 | target_node->type); | |
1da177e4 LT |
142 | break; |
143 | } | |
144 | ||
145 | /* Since both operands are Nodes, we don't need to delete them */ | |
146 | ||
4be44fcd | 147 | return_ACPI_STATUS(status); |
1da177e4 LT |
148 | } |
149 | ||
44f6c012 | 150 | /******************************************************************************* |
1da177e4 LT |
151 | * |
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 | * | |
44f6c012 | 160 | ******************************************************************************/ |
1da177e4 | 161 | |
4be44fcd | 162 | acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state) |
1da177e4 | 163 | { |
4be44fcd LB |
164 | acpi_status status; |
165 | union acpi_operand_object *obj_desc; | |
1da177e4 | 166 | |
b229cf92 | 167 | ACPI_FUNCTION_TRACE(ex_create_event); |
1da177e4 | 168 | |
4be44fcd | 169 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT); |
1da177e4 LT |
170 | 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 | */ | |
4be44fcd LB |
179 | status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, |
180 | &obj_desc->event.semaphore); | |
181 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
182 | goto cleanup; |
183 | } | |
184 | ||
185 | /* Attach object to the Node */ | |
186 | ||
4be44fcd LB |
187 | status = |
188 | acpi_ns_attach_object((struct acpi_namespace_node *)walk_state-> | |
189 | operands[0], obj_desc, ACPI_TYPE_EVENT); | |
1da177e4 | 190 | |
4be44fcd | 191 | cleanup: |
1da177e4 LT |
192 | /* |
193 | * Remove local reference to the object (on error, will cause deletion | |
194 | * of both object and semaphore if present.) | |
195 | */ | |
4be44fcd LB |
196 | acpi_ut_remove_reference(obj_desc); |
197 | return_ACPI_STATUS(status); | |
1da177e4 LT |
198 | } |
199 | ||
44f6c012 | 200 | /******************************************************************************* |
1da177e4 LT |
201 | * |
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 | * | |
44f6c012 | 212 | ******************************************************************************/ |
1da177e4 | 213 | |
4be44fcd | 214 | acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state) |
1da177e4 | 215 | { |
4be44fcd LB |
216 | acpi_status status = AE_OK; |
217 | union acpi_operand_object *obj_desc; | |
1da177e4 | 218 | |
b229cf92 | 219 | ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS); |
1da177e4 LT |
220 | |
221 | /* Create the new mutex object */ | |
222 | ||
4be44fcd | 223 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX); |
1da177e4 LT |
224 | 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 | */ | |
4be44fcd LB |
234 | status = acpi_os_create_semaphore(1, 1, &obj_desc->mutex.semaphore); |
235 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
236 | goto cleanup; |
237 | } | |
238 | ||
239 | /* Init object and attach to NS node */ | |
240 | ||
4be44fcd LB |
241 | 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]; | |
1da177e4 | 245 | |
61686124 BM |
246 | status = |
247 | acpi_ns_attach_object(obj_desc->mutex.node, obj_desc, | |
248 | ACPI_TYPE_MUTEX); | |
1da177e4 | 249 | |
4be44fcd | 250 | cleanup: |
1da177e4 LT |
251 | /* |
252 | * Remove local reference to the object (on error, will cause deletion | |
253 | * of both object and semaphore if present.) | |
254 | */ | |
4be44fcd LB |
255 | acpi_ut_remove_reference(obj_desc); |
256 | return_ACPI_STATUS(status); | |
1da177e4 LT |
257 | } |
258 | ||
44f6c012 | 259 | /******************************************************************************* |
1da177e4 LT |
260 | * |
261 | * FUNCTION: acpi_ex_create_region | |
262 | * | |
263 | * PARAMETERS: aml_start - Pointer to the region declaration AML | |
264 | * aml_length - Max length of the declaration AML | |
44f6c012 | 265 | * region_space - space_iD for the region |
1da177e4 LT |
266 | * walk_state - Current state |
267 | * | |
268 | * RETURN: Status | |
269 | * | |
270 | * DESCRIPTION: Create a new operation region object | |
271 | * | |
44f6c012 | 272 | ******************************************************************************/ |
1da177e4 LT |
273 | |
274 | acpi_status | |
4be44fcd LB |
275 | acpi_ex_create_region(u8 * aml_start, |
276 | u32 aml_length, | |
277 | u8 region_space, struct acpi_walk_state *walk_state) | |
1da177e4 | 278 | { |
4be44fcd LB |
279 | acpi_status status; |
280 | union acpi_operand_object *obj_desc; | |
281 | struct acpi_namespace_node *node; | |
282 | union acpi_operand_object *region_obj2; | |
1da177e4 | 283 | |
b229cf92 | 284 | ACPI_FUNCTION_TRACE(ex_create_region); |
1da177e4 LT |
285 | |
286 | /* Get the Namespace Node */ | |
287 | ||
288 | node = walk_state->op->common.node; | |
289 | ||
290 | /* | |
291 | * If the region object is already attached to this node, | |
292 | * just return | |
293 | */ | |
4be44fcd LB |
294 | if (acpi_ns_get_attached_object(node)) { |
295 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
296 | } |
297 | ||
298 | /* | |
299 | * Space ID must be one of the predefined IDs, or in the user-defined | |
300 | * range | |
301 | */ | |
302 | if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) && | |
4be44fcd | 303 | (region_space < ACPI_USER_REGION_BEGIN)) { |
b229cf92 | 304 | ACPI_ERROR((AE_INFO, "Invalid AddressSpace type %X", |
b8e4d893 | 305 | region_space)); |
4be44fcd | 306 | return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID); |
1da177e4 LT |
307 | } |
308 | ||
4be44fcd LB |
309 | ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (%X)\n", |
310 | acpi_ut_get_region_name(region_space), region_space)); | |
1da177e4 LT |
311 | |
312 | /* Create the region descriptor */ | |
313 | ||
4be44fcd | 314 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION); |
1da177e4 LT |
315 | if (!obj_desc) { |
316 | status = AE_NO_MEMORY; | |
317 | goto cleanup; | |
318 | } | |
319 | ||
320 | /* | |
321 | * Remember location in AML stream of address & length | |
322 | * operands since they need to be evaluated at run time. | |
323 | */ | |
4be44fcd | 324 | region_obj2 = obj_desc->common.next_object; |
1da177e4 LT |
325 | region_obj2->extra.aml_start = aml_start; |
326 | region_obj2->extra.aml_length = aml_length; | |
327 | ||
328 | /* Init the region from the operands */ | |
329 | ||
330 | obj_desc->region.space_id = region_space; | |
331 | obj_desc->region.address = 0; | |
332 | obj_desc->region.length = 0; | |
4be44fcd | 333 | obj_desc->region.node = node; |
1da177e4 LT |
334 | |
335 | /* Install the new region object in the parent Node */ | |
336 | ||
4be44fcd | 337 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION); |
1da177e4 | 338 | |
4be44fcd | 339 | cleanup: |
1da177e4 LT |
340 | |
341 | /* Remove local reference to the object */ | |
342 | ||
4be44fcd LB |
343 | acpi_ut_remove_reference(obj_desc); |
344 | return_ACPI_STATUS(status); | |
1da177e4 LT |
345 | } |
346 | ||
44f6c012 | 347 | /******************************************************************************* |
1da177e4 LT |
348 | * |
349 | * FUNCTION: acpi_ex_create_table_region | |
350 | * | |
351 | * PARAMETERS: walk_state - Current state | |
352 | * | |
353 | * RETURN: Status | |
354 | * | |
355 | * DESCRIPTION: Create a new data_table_region object | |
356 | * | |
44f6c012 | 357 | ******************************************************************************/ |
1da177e4 | 358 | |
4be44fcd | 359 | acpi_status acpi_ex_create_table_region(struct acpi_walk_state *walk_state) |
1da177e4 | 360 | { |
4be44fcd LB |
361 | acpi_status status; |
362 | union acpi_operand_object **operand = &walk_state->operands[0]; | |
363 | union acpi_operand_object *obj_desc; | |
364 | struct acpi_namespace_node *node; | |
365 | struct acpi_table_header *table; | |
366 | union acpi_operand_object *region_obj2; | |
1da177e4 | 367 | |
b229cf92 | 368 | ACPI_FUNCTION_TRACE(ex_create_table_region); |
1da177e4 LT |
369 | |
370 | /* Get the Node from the object stack */ | |
371 | ||
372 | node = walk_state->op->common.node; | |
373 | ||
374 | /* | |
375 | * If the region object is already attached to this node, | |
376 | * just return | |
377 | */ | |
4be44fcd LB |
378 | if (acpi_ns_get_attached_object(node)) { |
379 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
380 | } |
381 | ||
382 | /* Find the ACPI table */ | |
383 | ||
4be44fcd LB |
384 | status = acpi_tb_find_table(operand[1]->string.pointer, |
385 | operand[2]->string.pointer, | |
386 | operand[3]->string.pointer, &table); | |
387 | if (ACPI_FAILURE(status)) { | |
388 | return_ACPI_STATUS(status); | |
1da177e4 LT |
389 | } |
390 | ||
391 | /* Create the region descriptor */ | |
392 | ||
4be44fcd | 393 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION); |
1da177e4 | 394 | if (!obj_desc) { |
4be44fcd | 395 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
396 | } |
397 | ||
4be44fcd | 398 | region_obj2 = obj_desc->common.next_object; |
1da177e4 LT |
399 | region_obj2->extra.region_context = NULL; |
400 | ||
401 | /* Init the region from the operands */ | |
402 | ||
403 | obj_desc->region.space_id = REGION_DATA_TABLE; | |
4be44fcd LB |
404 | obj_desc->region.address = |
405 | (acpi_physical_address) ACPI_TO_INTEGER(table); | |
1da177e4 | 406 | obj_desc->region.length = table->length; |
4be44fcd LB |
407 | obj_desc->region.node = node; |
408 | obj_desc->region.flags = AOPOBJ_DATA_VALID; | |
1da177e4 LT |
409 | |
410 | /* Install the new region object in the parent Node */ | |
411 | ||
4be44fcd LB |
412 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION); |
413 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
414 | goto cleanup; |
415 | } | |
416 | ||
4be44fcd LB |
417 | status = acpi_ev_initialize_region(obj_desc, FALSE); |
418 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
419 | if (status == AE_NOT_EXIST) { |
420 | status = AE_OK; | |
4be44fcd | 421 | } else { |
1da177e4 LT |
422 | goto cleanup; |
423 | } | |
424 | } | |
425 | ||
426 | obj_desc->region.flags |= AOPOBJ_SETUP_COMPLETE; | |
427 | ||
4be44fcd | 428 | cleanup: |
1da177e4 LT |
429 | |
430 | /* Remove local reference to the object */ | |
431 | ||
4be44fcd LB |
432 | acpi_ut_remove_reference(obj_desc); |
433 | return_ACPI_STATUS(status); | |
1da177e4 LT |
434 | } |
435 | ||
44f6c012 | 436 | /******************************************************************************* |
1da177e4 LT |
437 | * |
438 | * FUNCTION: acpi_ex_create_processor | |
439 | * | |
440 | * PARAMETERS: walk_state - Current state | |
441 | * | |
442 | * RETURN: Status | |
443 | * | |
444 | * DESCRIPTION: Create a new processor object and populate the fields | |
445 | * | |
446 | * Processor (Name[0], cpu_iD[1], pblock_addr[2], pblock_length[3]) | |
447 | * | |
44f6c012 | 448 | ******************************************************************************/ |
1da177e4 | 449 | |
4be44fcd | 450 | acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state) |
1da177e4 | 451 | { |
4be44fcd LB |
452 | union acpi_operand_object **operand = &walk_state->operands[0]; |
453 | union acpi_operand_object *obj_desc; | |
454 | acpi_status status; | |
1da177e4 | 455 | |
b229cf92 | 456 | ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state); |
1da177e4 LT |
457 | |
458 | /* Create the processor object */ | |
459 | ||
4be44fcd | 460 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR); |
1da177e4 | 461 | if (!obj_desc) { |
4be44fcd | 462 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
463 | } |
464 | ||
44f6c012 RM |
465 | /* Initialize the processor object from the operands */ |
466 | ||
4be44fcd | 467 | obj_desc->processor.proc_id = (u8) operand[1]->integer.value; |
61686124 | 468 | obj_desc->processor.length = (u8) operand[3]->integer.value; |
4be44fcd LB |
469 | obj_desc->processor.address = |
470 | (acpi_io_address) operand[2]->integer.value; | |
1da177e4 LT |
471 | |
472 | /* Install the processor object in the parent Node */ | |
473 | ||
4be44fcd LB |
474 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
475 | obj_desc, ACPI_TYPE_PROCESSOR); | |
1da177e4 LT |
476 | |
477 | /* Remove local reference to the object */ | |
478 | ||
4be44fcd LB |
479 | acpi_ut_remove_reference(obj_desc); |
480 | return_ACPI_STATUS(status); | |
1da177e4 LT |
481 | } |
482 | ||
44f6c012 | 483 | /******************************************************************************* |
1da177e4 LT |
484 | * |
485 | * FUNCTION: acpi_ex_create_power_resource | |
486 | * | |
487 | * PARAMETERS: walk_state - Current state | |
488 | * | |
489 | * RETURN: Status | |
490 | * | |
491 | * DESCRIPTION: Create a new power_resource object and populate the fields | |
492 | * | |
493 | * power_resource (Name[0], system_level[1], resource_order[2]) | |
494 | * | |
44f6c012 | 495 | ******************************************************************************/ |
1da177e4 | 496 | |
4be44fcd | 497 | acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state) |
1da177e4 | 498 | { |
4be44fcd LB |
499 | union acpi_operand_object **operand = &walk_state->operands[0]; |
500 | acpi_status status; | |
501 | union acpi_operand_object *obj_desc; | |
1da177e4 | 502 | |
b229cf92 | 503 | ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state); |
1da177e4 LT |
504 | |
505 | /* Create the power resource object */ | |
506 | ||
4be44fcd | 507 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER); |
1da177e4 | 508 | if (!obj_desc) { |
4be44fcd | 509 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
510 | } |
511 | ||
512 | /* Initialize the power object from the operands */ | |
513 | ||
514 | obj_desc->power_resource.system_level = (u8) operand[1]->integer.value; | |
4be44fcd LB |
515 | obj_desc->power_resource.resource_order = |
516 | (u16) operand[2]->integer.value; | |
1da177e4 LT |
517 | |
518 | /* Install the power resource object in the parent Node */ | |
519 | ||
4be44fcd LB |
520 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
521 | obj_desc, ACPI_TYPE_POWER); | |
1da177e4 LT |
522 | |
523 | /* Remove local reference to the object */ | |
524 | ||
4be44fcd LB |
525 | acpi_ut_remove_reference(obj_desc); |
526 | return_ACPI_STATUS(status); | |
1da177e4 | 527 | } |
1da177e4 LT |
528 | #endif |
529 | ||
44f6c012 | 530 | /******************************************************************************* |
1da177e4 LT |
531 | * |
532 | * FUNCTION: acpi_ex_create_method | |
533 | * | |
534 | * PARAMETERS: aml_start - First byte of the method's AML | |
535 | * aml_length - AML byte count for this method | |
536 | * walk_state - Current state | |
537 | * | |
538 | * RETURN: Status | |
539 | * | |
540 | * DESCRIPTION: Create a new method object | |
541 | * | |
44f6c012 | 542 | ******************************************************************************/ |
1da177e4 LT |
543 | |
544 | acpi_status | |
4be44fcd LB |
545 | acpi_ex_create_method(u8 * aml_start, |
546 | u32 aml_length, struct acpi_walk_state *walk_state) | |
1da177e4 | 547 | { |
4be44fcd LB |
548 | union acpi_operand_object **operand = &walk_state->operands[0]; |
549 | union acpi_operand_object *obj_desc; | |
550 | acpi_status status; | |
551 | u8 method_flags; | |
1da177e4 | 552 | |
b229cf92 | 553 | ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state); |
1da177e4 LT |
554 | |
555 | /* Create a new method object */ | |
556 | ||
4be44fcd | 557 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); |
1da177e4 | 558 | if (!obj_desc) { |
4be44fcd | 559 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
560 | } |
561 | ||
562 | /* Save the method's AML pointer and length */ | |
563 | ||
564 | obj_desc->method.aml_start = aml_start; | |
565 | obj_desc->method.aml_length = aml_length; | |
566 | ||
567 | /* | |
568 | * Disassemble the method flags. Split off the Arg Count | |
569 | * for efficiency | |
570 | */ | |
571 | method_flags = (u8) operand[1]->integer.value; | |
572 | ||
4be44fcd LB |
573 | obj_desc->method.method_flags = |
574 | (u8) (method_flags & ~AML_METHOD_ARG_COUNT); | |
575 | obj_desc->method.param_count = | |
576 | (u8) (method_flags & AML_METHOD_ARG_COUNT); | |
1da177e4 LT |
577 | |
578 | /* | |
579 | * Get the concurrency count. If required, a semaphore will be | |
580 | * created for this method when it is parsed. | |
581 | */ | |
582 | if (acpi_gbl_all_methods_serialized) { | |
583 | obj_desc->method.concurrency = 1; | |
584 | obj_desc->method.method_flags |= AML_METHOD_SERIALIZED; | |
4be44fcd | 585 | } else if (method_flags & AML_METHOD_SERIALIZED) { |
1da177e4 LT |
586 | /* |
587 | * ACPI 1.0: Concurrency = 1 | |
588 | * ACPI 2.0: Concurrency = (sync_level (in method declaration) + 1) | |
589 | */ | |
590 | obj_desc->method.concurrency = (u8) | |
4be44fcd LB |
591 | (((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4) + 1); |
592 | } else { | |
1da177e4 LT |
593 | obj_desc->method.concurrency = ACPI_INFINITE_CONCURRENCY; |
594 | } | |
595 | ||
596 | /* Attach the new object to the method Node */ | |
597 | ||
4be44fcd LB |
598 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
599 | obj_desc, ACPI_TYPE_METHOD); | |
1da177e4 LT |
600 | |
601 | /* Remove local reference to the object */ | |
602 | ||
4be44fcd | 603 | acpi_ut_remove_reference(obj_desc); |
1da177e4 LT |
604 | |
605 | /* Remove a reference to the operand */ | |
606 | ||
4be44fcd LB |
607 | acpi_ut_remove_reference(operand[1]); |
608 | return_ACPI_STATUS(status); | |
1da177e4 | 609 | } |