Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: excreate - Named object creation | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
6c9deb72 | 8 | * Copyright (C) 2000 - 2007, 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 | 53 | #ifndef ACPI_NO_METHOD_EXECUTION |
44f6c012 | 54 | /******************************************************************************* |
1da177e4 LT |
55 | * |
56 | * FUNCTION: acpi_ex_create_alias | |
57 | * | |
58 | * PARAMETERS: walk_state - Current state, contains operands | |
59 | * | |
60 | * RETURN: Status | |
61 | * | |
62 | * DESCRIPTION: Create a new named alias | |
63 | * | |
44f6c012 | 64 | ******************************************************************************/ |
4be44fcd | 65 | acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state) |
1da177e4 | 66 | { |
4be44fcd LB |
67 | struct acpi_namespace_node *target_node; |
68 | struct acpi_namespace_node *alias_node; | |
69 | acpi_status status = AE_OK; | |
1da177e4 | 70 | |
b229cf92 | 71 | ACPI_FUNCTION_TRACE(ex_create_alias); |
1da177e4 LT |
72 | |
73 | /* Get the source/alias operands (both namespace nodes) */ | |
74 | ||
4be44fcd LB |
75 | alias_node = (struct acpi_namespace_node *)walk_state->operands[0]; |
76 | target_node = (struct acpi_namespace_node *)walk_state->operands[1]; | |
1da177e4 LT |
77 | |
78 | if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) || | |
4be44fcd | 79 | (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) { |
1da177e4 LT |
80 | /* |
81 | * Dereference an existing alias so that we don't create a chain | |
82 | * of aliases. With this code, we guarantee that an alias is | |
83 | * always exactly one level of indirection away from the | |
84 | * actual aliased name. | |
85 | */ | |
4be44fcd LB |
86 | target_node = |
87 | ACPI_CAST_PTR(struct acpi_namespace_node, | |
88 | target_node->object); | |
1da177e4 LT |
89 | } |
90 | ||
91 | /* | |
92 | * For objects that can never change (i.e., the NS node will | |
93 | * permanently point to the same object), we can simply attach | |
94 | * the object to the new NS node. For other objects (such as | |
95 | * Integers, buffers, etc.), we have to point the Alias node | |
96 | * to the original Node. | |
97 | */ | |
98 | switch (target_node->type) { | |
99 | case ACPI_TYPE_INTEGER: | |
100 | case ACPI_TYPE_STRING: | |
101 | case ACPI_TYPE_BUFFER: | |
102 | case ACPI_TYPE_PACKAGE: | |
103 | case ACPI_TYPE_BUFFER_FIELD: | |
104 | ||
105 | /* | |
106 | * The new alias has the type ALIAS and points to the original | |
107 | * NS node, not the object itself. This is because for these | |
108 | * types, the object can change dynamically via a Store. | |
109 | */ | |
110 | alias_node->type = ACPI_TYPE_LOCAL_ALIAS; | |
4be44fcd LB |
111 | alias_node->object = |
112 | ACPI_CAST_PTR(union acpi_operand_object, target_node); | |
1da177e4 LT |
113 | break; |
114 | ||
115 | case ACPI_TYPE_METHOD: | |
116 | ||
117 | /* | |
118 | * The new alias has the type ALIAS and points to the original | |
119 | * NS node, not the object itself. This is because for these | |
120 | * types, the object can change dynamically via a Store. | |
121 | */ | |
122 | alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS; | |
4be44fcd LB |
123 | alias_node->object = |
124 | ACPI_CAST_PTR(union acpi_operand_object, target_node); | |
1da177e4 LT |
125 | break; |
126 | ||
127 | default: | |
128 | ||
129 | /* Attach the original source object to the new Alias Node */ | |
130 | ||
131 | /* | |
132 | * The new alias assumes the type of the target, and it points | |
133 | * to the same object. The reference count of the object has an | |
134 | * additional reference to prevent deletion out from under either the | |
135 | * target node or the alias Node | |
136 | */ | |
4be44fcd LB |
137 | status = acpi_ns_attach_object(alias_node, |
138 | acpi_ns_get_attached_object | |
139 | (target_node), | |
140 | target_node->type); | |
1da177e4 LT |
141 | break; |
142 | } | |
143 | ||
144 | /* Since both operands are Nodes, we don't need to delete them */ | |
145 | ||
4be44fcd | 146 | return_ACPI_STATUS(status); |
1da177e4 LT |
147 | } |
148 | ||
44f6c012 | 149 | /******************************************************************************* |
1da177e4 LT |
150 | * |
151 | * FUNCTION: acpi_ex_create_event | |
152 | * | |
153 | * PARAMETERS: walk_state - Current state | |
154 | * | |
155 | * RETURN: Status | |
156 | * | |
157 | * DESCRIPTION: Create a new event object | |
158 | * | |
44f6c012 | 159 | ******************************************************************************/ |
1da177e4 | 160 | |
4be44fcd | 161 | acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state) |
1da177e4 | 162 | { |
4be44fcd LB |
163 | acpi_status status; |
164 | union acpi_operand_object *obj_desc; | |
1da177e4 | 165 | |
b229cf92 | 166 | ACPI_FUNCTION_TRACE(ex_create_event); |
1da177e4 | 167 | |
4be44fcd | 168 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT); |
1da177e4 LT |
169 | if (!obj_desc) { |
170 | status = AE_NO_MEMORY; | |
171 | goto cleanup; | |
172 | } | |
173 | ||
174 | /* | |
175 | * Create the actual OS semaphore, with zero initial units -- meaning | |
176 | * that the event is created in an unsignalled state | |
177 | */ | |
4be44fcd | 178 | status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, |
967440e3 | 179 | &obj_desc->event.os_semaphore); |
4be44fcd | 180 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
181 | goto cleanup; |
182 | } | |
183 | ||
184 | /* Attach object to the Node */ | |
185 | ||
4be44fcd LB |
186 | status = |
187 | acpi_ns_attach_object((struct acpi_namespace_node *)walk_state-> | |
188 | operands[0], obj_desc, ACPI_TYPE_EVENT); | |
1da177e4 | 189 | |
4be44fcd | 190 | cleanup: |
1da177e4 LT |
191 | /* |
192 | * Remove local reference to the object (on error, will cause deletion | |
193 | * of both object and semaphore if present.) | |
194 | */ | |
4be44fcd LB |
195 | acpi_ut_remove_reference(obj_desc); |
196 | return_ACPI_STATUS(status); | |
1da177e4 LT |
197 | } |
198 | ||
44f6c012 | 199 | /******************************************************************************* |
1da177e4 LT |
200 | * |
201 | * FUNCTION: acpi_ex_create_mutex | |
202 | * | |
203 | * PARAMETERS: walk_state - Current state | |
204 | * | |
205 | * RETURN: Status | |
206 | * | |
207 | * DESCRIPTION: Create a new mutex object | |
208 | * | |
209 | * Mutex (Name[0], sync_level[1]) | |
210 | * | |
44f6c012 | 211 | ******************************************************************************/ |
1da177e4 | 212 | |
4be44fcd | 213 | acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state) |
1da177e4 | 214 | { |
4be44fcd LB |
215 | acpi_status status = AE_OK; |
216 | union acpi_operand_object *obj_desc; | |
1da177e4 | 217 | |
b229cf92 | 218 | ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS); |
1da177e4 LT |
219 | |
220 | /* Create the new mutex object */ | |
221 | ||
4be44fcd | 222 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX); |
1da177e4 LT |
223 | if (!obj_desc) { |
224 | status = AE_NO_MEMORY; | |
225 | goto cleanup; | |
226 | } | |
227 | ||
967440e3 BM |
228 | /* Create the actual OS Mutex */ |
229 | ||
230 | status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex); | |
4be44fcd | 231 | if (ACPI_FAILURE(status)) { |
1da177e4 LT |
232 | goto cleanup; |
233 | } | |
234 | ||
235 | /* Init object and attach to NS node */ | |
236 | ||
4be44fcd LB |
237 | obj_desc->mutex.sync_level = |
238 | (u8) walk_state->operands[1]->integer.value; | |
239 | obj_desc->mutex.node = | |
240 | (struct acpi_namespace_node *)walk_state->operands[0]; | |
1da177e4 | 241 | |
61686124 BM |
242 | status = |
243 | acpi_ns_attach_object(obj_desc->mutex.node, obj_desc, | |
244 | ACPI_TYPE_MUTEX); | |
1da177e4 | 245 | |
4be44fcd | 246 | cleanup: |
1da177e4 LT |
247 | /* |
248 | * Remove local reference to the object (on error, will cause deletion | |
249 | * of both object and semaphore if present.) | |
250 | */ | |
4be44fcd LB |
251 | acpi_ut_remove_reference(obj_desc); |
252 | return_ACPI_STATUS(status); | |
1da177e4 LT |
253 | } |
254 | ||
44f6c012 | 255 | /******************************************************************************* |
1da177e4 LT |
256 | * |
257 | * FUNCTION: acpi_ex_create_region | |
258 | * | |
259 | * PARAMETERS: aml_start - Pointer to the region declaration AML | |
260 | * aml_length - Max length of the declaration AML | |
44f6c012 | 261 | * region_space - space_iD for the region |
1da177e4 LT |
262 | * walk_state - Current state |
263 | * | |
264 | * RETURN: Status | |
265 | * | |
266 | * DESCRIPTION: Create a new operation region object | |
267 | * | |
44f6c012 | 268 | ******************************************************************************/ |
1da177e4 LT |
269 | |
270 | acpi_status | |
4be44fcd LB |
271 | acpi_ex_create_region(u8 * aml_start, |
272 | u32 aml_length, | |
273 | u8 region_space, struct acpi_walk_state *walk_state) | |
1da177e4 | 274 | { |
4be44fcd LB |
275 | acpi_status status; |
276 | union acpi_operand_object *obj_desc; | |
277 | struct acpi_namespace_node *node; | |
278 | union acpi_operand_object *region_obj2; | |
1da177e4 | 279 | |
b229cf92 | 280 | ACPI_FUNCTION_TRACE(ex_create_region); |
1da177e4 LT |
281 | |
282 | /* Get the Namespace Node */ | |
283 | ||
284 | node = walk_state->op->common.node; | |
285 | ||
286 | /* | |
287 | * If the region object is already attached to this node, | |
288 | * just return | |
289 | */ | |
4be44fcd LB |
290 | if (acpi_ns_get_attached_object(node)) { |
291 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
292 | } |
293 | ||
294 | /* | |
295 | * Space ID must be one of the predefined IDs, or in the user-defined | |
296 | * range | |
297 | */ | |
298 | if ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) && | |
4be44fcd | 299 | (region_space < ACPI_USER_REGION_BEGIN)) { |
b229cf92 | 300 | ACPI_ERROR((AE_INFO, "Invalid AddressSpace type %X", |
b8e4d893 | 301 | region_space)); |
4be44fcd | 302 | return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID); |
1da177e4 LT |
303 | } |
304 | ||
4be44fcd LB |
305 | ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (%X)\n", |
306 | acpi_ut_get_region_name(region_space), region_space)); | |
1da177e4 LT |
307 | |
308 | /* Create the region descriptor */ | |
309 | ||
4be44fcd | 310 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION); |
1da177e4 LT |
311 | if (!obj_desc) { |
312 | status = AE_NO_MEMORY; | |
313 | goto cleanup; | |
314 | } | |
315 | ||
316 | /* | |
317 | * Remember location in AML stream of address & length | |
318 | * operands since they need to be evaluated at run time. | |
319 | */ | |
4be44fcd | 320 | region_obj2 = obj_desc->common.next_object; |
1da177e4 LT |
321 | region_obj2->extra.aml_start = aml_start; |
322 | region_obj2->extra.aml_length = aml_length; | |
323 | ||
324 | /* Init the region from the operands */ | |
325 | ||
326 | obj_desc->region.space_id = region_space; | |
327 | obj_desc->region.address = 0; | |
328 | obj_desc->region.length = 0; | |
4be44fcd | 329 | obj_desc->region.node = node; |
1da177e4 LT |
330 | |
331 | /* Install the new region object in the parent Node */ | |
332 | ||
4be44fcd | 333 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION); |
1da177e4 | 334 | |
4be44fcd | 335 | cleanup: |
1da177e4 LT |
336 | |
337 | /* Remove local reference to the object */ | |
338 | ||
4be44fcd LB |
339 | acpi_ut_remove_reference(obj_desc); |
340 | return_ACPI_STATUS(status); | |
1da177e4 LT |
341 | } |
342 | ||
44f6c012 | 343 | /******************************************************************************* |
1da177e4 LT |
344 | * |
345 | * FUNCTION: acpi_ex_create_table_region | |
346 | * | |
347 | * PARAMETERS: walk_state - Current state | |
348 | * | |
349 | * RETURN: Status | |
350 | * | |
351 | * DESCRIPTION: Create a new data_table_region object | |
352 | * | |
44f6c012 | 353 | ******************************************************************************/ |
1da177e4 | 354 | |
4be44fcd | 355 | acpi_status acpi_ex_create_table_region(struct acpi_walk_state *walk_state) |
1da177e4 | 356 | { |
4be44fcd LB |
357 | acpi_status status; |
358 | union acpi_operand_object **operand = &walk_state->operands[0]; | |
359 | union acpi_operand_object *obj_desc; | |
360 | struct acpi_namespace_node *node; | |
4be44fcd | 361 | union acpi_operand_object *region_obj2; |
f3d2e786 BM |
362 | acpi_native_uint table_index; |
363 | struct acpi_table_header *table; | |
1da177e4 | 364 | |
b229cf92 | 365 | ACPI_FUNCTION_TRACE(ex_create_table_region); |
1da177e4 LT |
366 | |
367 | /* Get the Node from the object stack */ | |
368 | ||
369 | node = walk_state->op->common.node; | |
370 | ||
371 | /* | |
372 | * If the region object is already attached to this node, | |
373 | * just return | |
374 | */ | |
4be44fcd LB |
375 | if (acpi_ns_get_attached_object(node)) { |
376 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
377 | } |
378 | ||
379 | /* Find the ACPI table */ | |
380 | ||
4be44fcd LB |
381 | status = acpi_tb_find_table(operand[1]->string.pointer, |
382 | operand[2]->string.pointer, | |
f3d2e786 | 383 | operand[3]->string.pointer, &table_index); |
4be44fcd LB |
384 | if (ACPI_FAILURE(status)) { |
385 | return_ACPI_STATUS(status); | |
1da177e4 LT |
386 | } |
387 | ||
388 | /* Create the region descriptor */ | |
389 | ||
4be44fcd | 390 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION); |
1da177e4 | 391 | if (!obj_desc) { |
4be44fcd | 392 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
393 | } |
394 | ||
4be44fcd | 395 | region_obj2 = obj_desc->common.next_object; |
1da177e4 LT |
396 | region_obj2->extra.region_context = NULL; |
397 | ||
f3d2e786 BM |
398 | status = acpi_get_table_by_index(table_index, &table); |
399 | if (ACPI_FAILURE(status)) { | |
400 | return_ACPI_STATUS(status); | |
401 | } | |
402 | ||
1da177e4 LT |
403 | /* Init the region from the operands */ |
404 | ||
405 | obj_desc->region.space_id = REGION_DATA_TABLE; | |
4be44fcd LB |
406 | obj_desc->region.address = |
407 | (acpi_physical_address) ACPI_TO_INTEGER(table); | |
1da177e4 | 408 | obj_desc->region.length = table->length; |
4be44fcd LB |
409 | obj_desc->region.node = node; |
410 | obj_desc->region.flags = AOPOBJ_DATA_VALID; | |
1da177e4 LT |
411 | |
412 | /* Install the new region object in the parent Node */ | |
413 | ||
4be44fcd LB |
414 | status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION); |
415 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
416 | goto cleanup; |
417 | } | |
418 | ||
4be44fcd LB |
419 | status = acpi_ev_initialize_region(obj_desc, FALSE); |
420 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
421 | if (status == AE_NOT_EXIST) { |
422 | status = AE_OK; | |
4be44fcd | 423 | } else { |
1da177e4 LT |
424 | goto cleanup; |
425 | } | |
426 | } | |
427 | ||
428 | obj_desc->region.flags |= AOPOBJ_SETUP_COMPLETE; | |
429 | ||
4be44fcd | 430 | cleanup: |
1da177e4 LT |
431 | |
432 | /* Remove local reference to the object */ | |
433 | ||
4be44fcd LB |
434 | acpi_ut_remove_reference(obj_desc); |
435 | return_ACPI_STATUS(status); | |
1da177e4 LT |
436 | } |
437 | ||
44f6c012 | 438 | /******************************************************************************* |
1da177e4 LT |
439 | * |
440 | * FUNCTION: acpi_ex_create_processor | |
441 | * | |
442 | * PARAMETERS: walk_state - Current state | |
443 | * | |
444 | * RETURN: Status | |
445 | * | |
446 | * DESCRIPTION: Create a new processor object and populate the fields | |
447 | * | |
448 | * Processor (Name[0], cpu_iD[1], pblock_addr[2], pblock_length[3]) | |
449 | * | |
44f6c012 | 450 | ******************************************************************************/ |
1da177e4 | 451 | |
4be44fcd | 452 | acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state) |
1da177e4 | 453 | { |
4be44fcd LB |
454 | union acpi_operand_object **operand = &walk_state->operands[0]; |
455 | union acpi_operand_object *obj_desc; | |
456 | acpi_status status; | |
1da177e4 | 457 | |
b229cf92 | 458 | ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state); |
1da177e4 LT |
459 | |
460 | /* Create the processor object */ | |
461 | ||
4be44fcd | 462 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR); |
1da177e4 | 463 | if (!obj_desc) { |
4be44fcd | 464 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
465 | } |
466 | ||
44f6c012 RM |
467 | /* Initialize the processor object from the operands */ |
468 | ||
4be44fcd | 469 | obj_desc->processor.proc_id = (u8) operand[1]->integer.value; |
61686124 | 470 | obj_desc->processor.length = (u8) operand[3]->integer.value; |
4be44fcd LB |
471 | obj_desc->processor.address = |
472 | (acpi_io_address) operand[2]->integer.value; | |
1da177e4 LT |
473 | |
474 | /* Install the processor object in the parent Node */ | |
475 | ||
4be44fcd LB |
476 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
477 | obj_desc, ACPI_TYPE_PROCESSOR); | |
1da177e4 LT |
478 | |
479 | /* Remove local reference to the object */ | |
480 | ||
4be44fcd LB |
481 | acpi_ut_remove_reference(obj_desc); |
482 | return_ACPI_STATUS(status); | |
1da177e4 LT |
483 | } |
484 | ||
44f6c012 | 485 | /******************************************************************************* |
1da177e4 LT |
486 | * |
487 | * FUNCTION: acpi_ex_create_power_resource | |
488 | * | |
489 | * PARAMETERS: walk_state - Current state | |
490 | * | |
491 | * RETURN: Status | |
492 | * | |
493 | * DESCRIPTION: Create a new power_resource object and populate the fields | |
494 | * | |
495 | * power_resource (Name[0], system_level[1], resource_order[2]) | |
496 | * | |
44f6c012 | 497 | ******************************************************************************/ |
1da177e4 | 498 | |
4be44fcd | 499 | acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state) |
1da177e4 | 500 | { |
4be44fcd LB |
501 | union acpi_operand_object **operand = &walk_state->operands[0]; |
502 | acpi_status status; | |
503 | union acpi_operand_object *obj_desc; | |
1da177e4 | 504 | |
b229cf92 | 505 | ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state); |
1da177e4 LT |
506 | |
507 | /* Create the power resource object */ | |
508 | ||
4be44fcd | 509 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER); |
1da177e4 | 510 | if (!obj_desc) { |
4be44fcd | 511 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
512 | } |
513 | ||
514 | /* Initialize the power object from the operands */ | |
515 | ||
516 | obj_desc->power_resource.system_level = (u8) operand[1]->integer.value; | |
4be44fcd LB |
517 | obj_desc->power_resource.resource_order = |
518 | (u16) operand[2]->integer.value; | |
1da177e4 LT |
519 | |
520 | /* Install the power resource object in the parent Node */ | |
521 | ||
4be44fcd LB |
522 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
523 | obj_desc, ACPI_TYPE_POWER); | |
1da177e4 LT |
524 | |
525 | /* Remove local reference to the object */ | |
526 | ||
4be44fcd LB |
527 | acpi_ut_remove_reference(obj_desc); |
528 | return_ACPI_STATUS(status); | |
1da177e4 | 529 | } |
1da177e4 LT |
530 | #endif |
531 | ||
44f6c012 | 532 | /******************************************************************************* |
1da177e4 LT |
533 | * |
534 | * FUNCTION: acpi_ex_create_method | |
535 | * | |
536 | * PARAMETERS: aml_start - First byte of the method's AML | |
537 | * aml_length - AML byte count for this method | |
538 | * walk_state - Current state | |
539 | * | |
540 | * RETURN: Status | |
541 | * | |
542 | * DESCRIPTION: Create a new method object | |
543 | * | |
44f6c012 | 544 | ******************************************************************************/ |
1da177e4 LT |
545 | |
546 | acpi_status | |
4be44fcd LB |
547 | acpi_ex_create_method(u8 * aml_start, |
548 | u32 aml_length, struct acpi_walk_state *walk_state) | |
1da177e4 | 549 | { |
4be44fcd LB |
550 | union acpi_operand_object **operand = &walk_state->operands[0]; |
551 | union acpi_operand_object *obj_desc; | |
552 | acpi_status status; | |
553 | u8 method_flags; | |
1da177e4 | 554 | |
b229cf92 | 555 | ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state); |
1da177e4 LT |
556 | |
557 | /* Create a new method object */ | |
558 | ||
4be44fcd | 559 | obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); |
1da177e4 | 560 | if (!obj_desc) { |
f3d2e786 BM |
561 | status = AE_NO_MEMORY; |
562 | goto exit; | |
1da177e4 LT |
563 | } |
564 | ||
565 | /* Save the method's AML pointer and length */ | |
566 | ||
567 | obj_desc->method.aml_start = aml_start; | |
568 | obj_desc->method.aml_length = aml_length; | |
569 | ||
570 | /* | |
967440e3 | 571 | * Disassemble the method flags. Split off the Arg Count |
1da177e4 LT |
572 | * for efficiency |
573 | */ | |
574 | method_flags = (u8) operand[1]->integer.value; | |
575 | ||
4be44fcd LB |
576 | obj_desc->method.method_flags = |
577 | (u8) (method_flags & ~AML_METHOD_ARG_COUNT); | |
578 | obj_desc->method.param_count = | |
579 | (u8) (method_flags & AML_METHOD_ARG_COUNT); | |
1da177e4 LT |
580 | |
581 | /* | |
967440e3 | 582 | * Get the sync_level. If method is serialized, a mutex will be |
1da177e4 LT |
583 | * created for this method when it is parsed. |
584 | */ | |
4d2acd9e | 585 | if (method_flags & AML_METHOD_SERIALIZED) { |
1da177e4 | 586 | /* |
967440e3 BM |
587 | * ACPI 1.0: sync_level = 0 |
588 | * ACPI 2.0: sync_level = sync_level in method declaration | |
1da177e4 | 589 | */ |
967440e3 BM |
590 | obj_desc->method.sync_level = (u8) |
591 | ((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4); | |
1da177e4 LT |
592 | } |
593 | ||
594 | /* Attach the new object to the method Node */ | |
595 | ||
4be44fcd LB |
596 | status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0], |
597 | obj_desc, ACPI_TYPE_METHOD); | |
1da177e4 LT |
598 | |
599 | /* Remove local reference to the object */ | |
600 | ||
4be44fcd | 601 | acpi_ut_remove_reference(obj_desc); |
1da177e4 | 602 | |
f3d2e786 | 603 | exit: |
1da177e4 LT |
604 | /* Remove a reference to the operand */ |
605 | ||
4be44fcd LB |
606 | acpi_ut_remove_reference(operand[1]); |
607 | return_ACPI_STATUS(status); | |
1da177e4 | 608 | } |