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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswload - Dispatcher namespace load callbacks | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
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/acparser.h> | |
46 | #include <acpi/amlcode.h> | |
47 | #include <acpi/acdispat.h> | |
48 | #include <acpi/acinterp.h> | |
49 | #include <acpi/acnamesp.h> | |
50 | #include <acpi/acevents.h> | |
51 | ||
73459f73 | 52 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
53 | #include <acpi/acdisasm.h> |
54 | #endif | |
55 | ||
56 | #define _COMPONENT ACPI_DISPATCHER | |
4be44fcd | 57 | ACPI_MODULE_NAME("dswload") |
1da177e4 LT |
58 | |
59 | /******************************************************************************* | |
60 | * | |
61 | * FUNCTION: acpi_ds_init_callbacks | |
62 | * | |
63 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
64 | * pass_number - 1, 2, or 3 | |
65 | * | |
66 | * RETURN: Status | |
67 | * | |
68 | * DESCRIPTION: Init walk state callbacks | |
69 | * | |
70 | ******************************************************************************/ | |
1da177e4 | 71 | acpi_status |
4be44fcd | 72 | acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number) |
1da177e4 LT |
73 | { |
74 | ||
75 | switch (pass_number) { | |
76 | case 1: | |
4be44fcd LB |
77 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
78 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
79 | walk_state->descending_callback = acpi_ds_load1_begin_op; |
80 | walk_state->ascending_callback = acpi_ds_load1_end_op; | |
81 | break; | |
82 | ||
83 | case 2: | |
4be44fcd LB |
84 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
85 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
86 | walk_state->descending_callback = acpi_ds_load2_begin_op; |
87 | walk_state->ascending_callback = acpi_ds_load2_end_op; | |
88 | break; | |
89 | ||
90 | case 3: | |
91 | #ifndef ACPI_NO_METHOD_EXECUTION | |
4be44fcd LB |
92 | walk_state->parse_flags |= ACPI_PARSE_EXECUTE | |
93 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
94 | walk_state->descending_callback = acpi_ds_exec_begin_op; |
95 | walk_state->ascending_callback = acpi_ds_exec_end_op; | |
96 | #endif | |
97 | break; | |
98 | ||
99 | default: | |
100 | return (AE_BAD_PARAMETER); | |
101 | } | |
102 | ||
103 | return (AE_OK); | |
104 | } | |
105 | ||
1da177e4 LT |
106 | /******************************************************************************* |
107 | * | |
108 | * FUNCTION: acpi_ds_load1_begin_op | |
109 | * | |
110 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 111 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
112 | * |
113 | * RETURN: Status | |
114 | * | |
115 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
116 | * | |
117 | ******************************************************************************/ | |
118 | ||
119 | acpi_status | |
4be44fcd LB |
120 | acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state, |
121 | union acpi_parse_object ** out_op) | |
1da177e4 | 122 | { |
4be44fcd LB |
123 | union acpi_parse_object *op; |
124 | struct acpi_namespace_node *node; | |
125 | acpi_status status; | |
126 | acpi_object_type object_type; | |
127 | char *path; | |
128 | u32 flags; | |
1da177e4 | 129 | |
28f55ebc | 130 | ACPI_FUNCTION_TRACE("ds_load1_begin_op"); |
1da177e4 LT |
131 | |
132 | op = walk_state->op; | |
4be44fcd LB |
133 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
134 | walk_state)); | |
1da177e4 LT |
135 | |
136 | /* We are only interested in opcodes that have an associated name */ | |
137 | ||
138 | if (op) { | |
139 | if (!(walk_state->op_info->flags & AML_NAMED)) { | |
1da177e4 | 140 | *out_op = op; |
28f55ebc | 141 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
142 | } |
143 | ||
144 | /* Check if this object has already been installed in the namespace */ | |
145 | ||
146 | if (op->common.node) { | |
147 | *out_op = op; | |
28f55ebc | 148 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
149 | } |
150 | } | |
151 | ||
4be44fcd | 152 | path = acpi_ps_get_next_namestring(&walk_state->parser_state); |
1da177e4 LT |
153 | |
154 | /* Map the raw opcode into an internal object type */ | |
155 | ||
156 | object_type = walk_state->op_info->object_type; | |
157 | ||
4be44fcd LB |
158 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
159 | "State=%p Op=%p [%s]\n", walk_state, op, | |
160 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
161 | |
162 | switch (walk_state->opcode) { | |
163 | case AML_SCOPE_OP: | |
164 | ||
165 | /* | |
166 | * The target name of the Scope() operator must exist at this point so | |
167 | * that we can actually open the scope to enter new names underneath it. | |
168 | * Allow search-to-root for single namesegs. | |
169 | */ | |
4be44fcd LB |
170 | status = |
171 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
172 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, | |
173 | walk_state, &(node)); | |
73459f73 | 174 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
175 | if (status == AE_NOT_FOUND) { |
176 | /* | |
177 | * Table disassembly: | |
178 | * Target of Scope() not found. Generate an External for it, and | |
179 | * insert the name into the namespace. | |
180 | */ | |
4be44fcd LB |
181 | acpi_dm_add_to_external_list(path); |
182 | status = | |
183 | acpi_ns_lookup(walk_state->scope_info, path, | |
184 | object_type, ACPI_IMODE_LOAD_PASS1, | |
185 | ACPI_NS_SEARCH_PARENT, walk_state, | |
186 | &(node)); | |
1da177e4 LT |
187 | } |
188 | #endif | |
4be44fcd LB |
189 | if (ACPI_FAILURE(status)) { |
190 | ACPI_REPORT_NSERROR(path, status); | |
28f55ebc | 191 | return_ACPI_STATUS(status); |
1da177e4 LT |
192 | } |
193 | ||
194 | /* | |
195 | * Check to make sure that the target is | |
196 | * one of the opcodes that actually opens a scope | |
197 | */ | |
198 | switch (node->type) { | |
4be44fcd | 199 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
200 | case ACPI_TYPE_DEVICE: |
201 | case ACPI_TYPE_POWER: | |
202 | case ACPI_TYPE_PROCESSOR: | |
203 | case ACPI_TYPE_THERMAL: | |
204 | ||
205 | /* These are acceptable types */ | |
206 | break; | |
207 | ||
208 | case ACPI_TYPE_INTEGER: | |
209 | case ACPI_TYPE_STRING: | |
210 | case ACPI_TYPE_BUFFER: | |
211 | ||
212 | /* | |
213 | * These types we will allow, but we will change the type. This | |
214 | * enables some existing code of the form: | |
215 | * | |
216 | * Name (DEB, 0) | |
217 | * Scope (DEB) { ... } | |
218 | * | |
44f6c012 RM |
219 | * Note: silently change the type here. On the second pass, we will report |
220 | * a warning | |
1da177e4 LT |
221 | */ |
222 | ||
4be44fcd LB |
223 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
224 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
225 | path, | |
226 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
227 | |
228 | node->type = ACPI_TYPE_ANY; | |
229 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
230 | break; | |
231 | ||
232 | default: | |
233 | ||
234 | /* All other types are an error */ | |
235 | ||
4be44fcd | 236 | ACPI_REPORT_ERROR(("Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)\n", acpi_ut_get_type_name(node->type), path)); |
1da177e4 | 237 | |
28f55ebc | 238 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
1da177e4 LT |
239 | } |
240 | break; | |
241 | ||
1da177e4 LT |
242 | default: |
243 | ||
244 | /* | |
44f6c012 RM |
245 | * For all other named opcodes, we will enter the name into |
246 | * the namespace. | |
1da177e4 LT |
247 | * |
248 | * Setup the search flags. | |
249 | * Since we are entering a name into the namespace, we do not want to | |
250 | * enable the search-to-root upsearch. | |
251 | * | |
252 | * There are only two conditions where it is acceptable that the name | |
253 | * already exists: | |
254 | * 1) the Scope() operator can reopen a scoping object that was | |
255 | * previously defined (Scope, Method, Device, etc.) | |
256 | * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, | |
257 | * buffer_field, or Package), the name of the object is already | |
258 | * in the namespace. | |
259 | */ | |
28f55ebc | 260 | |
1da177e4 LT |
261 | if (walk_state->deferred_node) { |
262 | /* This name is already in the namespace, get the node */ | |
263 | ||
264 | node = walk_state->deferred_node; | |
265 | status = AE_OK; | |
266 | break; | |
267 | } | |
268 | ||
28f55ebc BM |
269 | /* |
270 | * If we are executing a method, do not create any namespace objects | |
271 | * during the load phase, only during execution. | |
272 | */ | |
273 | if (walk_state->method_node) { | |
274 | node = NULL; | |
275 | status = AE_OK; | |
276 | break; | |
277 | } | |
278 | ||
1da177e4 LT |
279 | flags = ACPI_NS_NO_UPSEARCH; |
280 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
4be44fcd | 281 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { |
1da177e4 | 282 | flags |= ACPI_NS_ERROR_IF_FOUND; |
4be44fcd LB |
283 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
284 | "[%s] Cannot already exist\n", | |
285 | acpi_ut_get_type_name(object_type))); | |
286 | } else { | |
287 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
288 | "[%s] Both Find or Create allowed\n", | |
289 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
290 | } |
291 | ||
292 | /* | |
293 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
294 | * as we go downward in the parse tree. Any necessary subobjects that |
295 | * involve arguments to the opcode must be created as we go back up the | |
296 | * parse tree later. | |
1da177e4 | 297 | */ |
4be44fcd LB |
298 | status = |
299 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
300 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, | |
301 | &(node)); | |
302 | if (ACPI_FAILURE(status)) { | |
303 | ACPI_REPORT_NSERROR(path, status); | |
28f55ebc | 304 | return_ACPI_STATUS(status); |
1da177e4 LT |
305 | } |
306 | break; | |
307 | } | |
308 | ||
1da177e4 LT |
309 | /* Common exit */ |
310 | ||
311 | if (!op) { | |
312 | /* Create a new op */ | |
313 | ||
4be44fcd | 314 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 315 | if (!op) { |
28f55ebc | 316 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
317 | } |
318 | } | |
319 | ||
28f55ebc | 320 | /* Initialize the op */ |
1da177e4 LT |
321 | |
322 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
c51a4de8 | 323 | op->named.path = ACPI_CAST_PTR(u8, path); |
1da177e4 LT |
324 | #endif |
325 | ||
28f55ebc BM |
326 | if (node) { |
327 | /* | |
328 | * Put the Node in the "op" object that the parser uses, so we | |
329 | * can get it again quickly when this scope is closed | |
330 | */ | |
331 | op->common.node = node; | |
332 | op->named.name = node->name.integer; | |
333 | } | |
334 | ||
4be44fcd LB |
335 | acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
336 | op); | |
1da177e4 | 337 | *out_op = op; |
28f55ebc | 338 | return_ACPI_STATUS(status); |
1da177e4 LT |
339 | } |
340 | ||
1da177e4 LT |
341 | /******************************************************************************* |
342 | * | |
343 | * FUNCTION: acpi_ds_load1_end_op | |
344 | * | |
345 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
346 | * |
347 | * RETURN: Status | |
348 | * | |
349 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
350 | * both control methods and everything else. | |
351 | * | |
352 | ******************************************************************************/ | |
353 | ||
28f55ebc | 354 | acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 355 | { |
4be44fcd LB |
356 | union acpi_parse_object *op; |
357 | acpi_object_type object_type; | |
358 | acpi_status status = AE_OK; | |
1da177e4 | 359 | |
28f55ebc | 360 | ACPI_FUNCTION_TRACE("ds_load1_end_op"); |
1da177e4 LT |
361 | |
362 | op = walk_state->op; | |
4be44fcd LB |
363 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
364 | walk_state)); | |
1da177e4 LT |
365 | |
366 | /* We are only interested in opcodes that have an associated name */ | |
367 | ||
368 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
28f55ebc | 369 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
370 | } |
371 | ||
372 | /* Get the object type to determine if we should pop the scope */ | |
373 | ||
374 | object_type = walk_state->op_info->object_type; | |
375 | ||
376 | #ifndef ACPI_NO_METHOD_EXECUTION | |
377 | if (walk_state->op_info->flags & AML_FIELD) { | |
28f55ebc BM |
378 | /* |
379 | * If we are executing a method, do not create any namespace objects | |
380 | * during the load phase, only during execution. | |
381 | */ | |
382 | if (!walk_state->method_node) { | |
383 | if (walk_state->opcode == AML_FIELD_OP || | |
384 | walk_state->opcode == AML_BANK_FIELD_OP || | |
385 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
386 | status = | |
387 | acpi_ds_init_field_objects(op, walk_state); | |
388 | } | |
1da177e4 | 389 | } |
28f55ebc | 390 | return_ACPI_STATUS(status); |
1da177e4 LT |
391 | } |
392 | ||
28f55ebc BM |
393 | /* |
394 | * If we are executing a method, do not create any namespace objects | |
395 | * during the load phase, only during execution. | |
396 | */ | |
397 | if (!walk_state->method_node) { | |
398 | if (op->common.aml_opcode == AML_REGION_OP) { | |
399 | status = | |
400 | acpi_ex_create_region(op->named.data, | |
401 | op->named.length, | |
402 | (acpi_adr_space_type) | |
403 | ((op->common.value.arg)-> | |
404 | common.value.integer), | |
405 | walk_state); | |
406 | if (ACPI_FAILURE(status)) { | |
407 | return_ACPI_STATUS(status); | |
408 | } | |
1da177e4 LT |
409 | } |
410 | } | |
411 | #endif | |
412 | ||
413 | if (op->common.aml_opcode == AML_NAME_OP) { | |
414 | /* For Name opcode, get the object type from the argument */ | |
415 | ||
416 | if (op->common.value.arg) { | |
4be44fcd LB |
417 | object_type = (acpi_ps_get_opcode_info((op->common. |
418 | value.arg)-> | |
419 | common. | |
420 | aml_opcode))-> | |
421 | object_type; | |
28f55ebc BM |
422 | |
423 | /* Set node type if we have a namespace node */ | |
424 | ||
425 | if (op->common.node) { | |
426 | op->common.node->type = (u8) object_type; | |
427 | } | |
1da177e4 LT |
428 | } |
429 | } | |
430 | ||
defba1d8 BM |
431 | /* |
432 | * If we are executing a method, do not create any namespace objects | |
433 | * during the load phase, only during execution. | |
434 | */ | |
435 | if (!walk_state->method_node) { | |
436 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
437 | /* | |
438 | * method_op pkg_length name_string method_flags term_list | |
439 | * | |
440 | * Note: We must create the method node/object pair as soon as we | |
441 | * see the method declaration. This allows later pass1 parsing | |
442 | * of invocations of the method (need to know the number of | |
443 | * arguments.) | |
444 | */ | |
445 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
446 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
447 | walk_state, op, op->named.node)); | |
1da177e4 | 448 | |
defba1d8 BM |
449 | if (!acpi_ns_get_attached_object(op->named.node)) { |
450 | walk_state->operands[0] = | |
451 | ACPI_CAST_PTR(void, op->named.node); | |
452 | walk_state->num_operands = 1; | |
1da177e4 | 453 | |
defba1d8 BM |
454 | status = |
455 | acpi_ds_create_operands(walk_state, | |
456 | op->common.value. | |
457 | arg); | |
458 | if (ACPI_SUCCESS(status)) { | |
459 | status = | |
460 | acpi_ex_create_method(op->named. | |
461 | data, | |
462 | op->named. | |
463 | length, | |
464 | walk_state); | |
465 | } | |
466 | walk_state->operands[0] = NULL; | |
467 | walk_state->num_operands = 0; | |
1da177e4 | 468 | |
defba1d8 BM |
469 | if (ACPI_FAILURE(status)) { |
470 | return_ACPI_STATUS(status); | |
471 | } | |
1da177e4 LT |
472 | } |
473 | } | |
474 | } | |
475 | ||
defba1d8 | 476 | /* Pop the scope stack (only if loading a table) */ |
1da177e4 | 477 | |
defba1d8 | 478 | if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { |
4be44fcd LB |
479 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
480 | "(%s): Popping scope for Op %p\n", | |
481 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 482 | |
4be44fcd | 483 | status = acpi_ds_scope_stack_pop(walk_state); |
1da177e4 LT |
484 | } |
485 | ||
28f55ebc | 486 | return_ACPI_STATUS(status); |
1da177e4 LT |
487 | } |
488 | ||
1da177e4 LT |
489 | /******************************************************************************* |
490 | * | |
491 | * FUNCTION: acpi_ds_load2_begin_op | |
492 | * | |
493 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 494 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
495 | * |
496 | * RETURN: Status | |
497 | * | |
498 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
499 | * | |
500 | ******************************************************************************/ | |
501 | ||
502 | acpi_status | |
28f55ebc BM |
503 | acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, |
504 | union acpi_parse_object **out_op) | |
1da177e4 | 505 | { |
4be44fcd LB |
506 | union acpi_parse_object *op; |
507 | struct acpi_namespace_node *node; | |
508 | acpi_status status; | |
509 | acpi_object_type object_type; | |
510 | char *buffer_ptr; | |
1da177e4 | 511 | |
4be44fcd | 512 | ACPI_FUNCTION_TRACE("ds_load2_begin_op"); |
1da177e4 LT |
513 | |
514 | op = walk_state->op; | |
4be44fcd LB |
515 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
516 | walk_state)); | |
1da177e4 LT |
517 | |
518 | if (op) { | |
88ac00f5 | 519 | if ((walk_state->control_state) && |
4be44fcd LB |
520 | (walk_state->control_state->common.state == |
521 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
88ac00f5 RM |
522 | /* We are executing a while loop outside of a method */ |
523 | ||
4be44fcd LB |
524 | status = acpi_ds_exec_begin_op(walk_state, out_op); |
525 | return_ACPI_STATUS(status); | |
88ac00f5 RM |
526 | } |
527 | ||
1da177e4 LT |
528 | /* We only care about Namespace opcodes here */ |
529 | ||
44f6c012 | 530 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && |
4be44fcd LB |
531 | (walk_state->opcode != AML_INT_NAMEPATH_OP)) || |
532 | (!(walk_state->op_info->flags & AML_NAMED))) { | |
aff8c277 | 533 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
44f6c012 | 534 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || |
4be44fcd | 535 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
aff8c277 | 536 | |
4be44fcd LB |
537 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
538 | "Begin/EXEC: %s (fl %8.8X)\n", | |
539 | walk_state->op_info->name, | |
540 | walk_state->op_info->flags)); | |
88ac00f5 RM |
541 | |
542 | /* Executing a type1 or type2 opcode outside of a method */ | |
543 | ||
4be44fcd LB |
544 | status = |
545 | acpi_ds_exec_begin_op(walk_state, out_op); | |
546 | return_ACPI_STATUS(status); | |
44f6c012 | 547 | } |
aff8c277 | 548 | #endif |
4be44fcd | 549 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
550 | } |
551 | ||
44f6c012 RM |
552 | /* Get the name we are going to enter or lookup in the namespace */ |
553 | ||
1da177e4 LT |
554 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
555 | /* For Namepath op, get the path string */ | |
556 | ||
557 | buffer_ptr = op->common.value.string; | |
558 | if (!buffer_ptr) { | |
559 | /* No name, just exit */ | |
560 | ||
4be44fcd | 561 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 562 | } |
4be44fcd | 563 | } else { |
1da177e4 LT |
564 | /* Get name from the op */ |
565 | ||
4be44fcd | 566 | buffer_ptr = (char *)&op->named.name; |
1da177e4 | 567 | } |
4be44fcd | 568 | } else { |
1da177e4 LT |
569 | /* Get the namestring from the raw AML */ |
570 | ||
4be44fcd LB |
571 | buffer_ptr = |
572 | acpi_ps_get_next_namestring(&walk_state->parser_state); | |
1da177e4 LT |
573 | } |
574 | ||
575 | /* Map the opcode into an internal object type */ | |
576 | ||
577 | object_type = walk_state->op_info->object_type; | |
578 | ||
4be44fcd LB |
579 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
580 | "State=%p Op=%p Type=%X\n", walk_state, op, | |
581 | object_type)); | |
1da177e4 LT |
582 | |
583 | switch (walk_state->opcode) { | |
584 | case AML_FIELD_OP: | |
585 | case AML_BANK_FIELD_OP: | |
586 | case AML_INDEX_FIELD_OP: | |
587 | ||
588 | node = NULL; | |
589 | status = AE_OK; | |
590 | break; | |
591 | ||
592 | case AML_INT_NAMEPATH_OP: | |
593 | ||
594 | /* | |
44f6c012 RM |
595 | * The name_path is an object reference to an existing object. |
596 | * Don't enter the name into the namespace, but look it up | |
597 | * for use later. | |
1da177e4 | 598 | */ |
4be44fcd LB |
599 | status = |
600 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
601 | object_type, ACPI_IMODE_EXECUTE, | |
602 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
1da177e4 LT |
603 | break; |
604 | ||
605 | case AML_SCOPE_OP: | |
606 | ||
607 | /* | |
44f6c012 RM |
608 | * The Path is an object reference to an existing object. |
609 | * Don't enter the name into the namespace, but look it up | |
610 | * for use later. | |
1da177e4 | 611 | */ |
4be44fcd LB |
612 | status = |
613 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
614 | object_type, ACPI_IMODE_EXECUTE, | |
615 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
616 | if (ACPI_FAILURE(status)) { | |
73459f73 | 617 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
618 | if (status == AE_NOT_FOUND) { |
619 | status = AE_OK; | |
4be44fcd LB |
620 | } else { |
621 | ACPI_REPORT_NSERROR(buffer_ptr, status); | |
1da177e4 LT |
622 | } |
623 | #else | |
4be44fcd | 624 | ACPI_REPORT_NSERROR(buffer_ptr, status); |
1da177e4 | 625 | #endif |
4be44fcd | 626 | return_ACPI_STATUS(status); |
1da177e4 LT |
627 | } |
628 | /* | |
629 | * We must check to make sure that the target is | |
630 | * one of the opcodes that actually opens a scope | |
631 | */ | |
632 | switch (node->type) { | |
4be44fcd | 633 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
634 | case ACPI_TYPE_DEVICE: |
635 | case ACPI_TYPE_POWER: | |
636 | case ACPI_TYPE_PROCESSOR: | |
637 | case ACPI_TYPE_THERMAL: | |
638 | ||
639 | /* These are acceptable types */ | |
640 | break; | |
641 | ||
642 | case ACPI_TYPE_INTEGER: | |
643 | case ACPI_TYPE_STRING: | |
644 | case ACPI_TYPE_BUFFER: | |
645 | ||
646 | /* | |
647 | * These types we will allow, but we will change the type. This | |
648 | * enables some existing code of the form: | |
649 | * | |
650 | * Name (DEB, 0) | |
651 | * Scope (DEB) { ... } | |
652 | */ | |
653 | ||
4be44fcd | 654 | ACPI_REPORT_WARNING(("Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", buffer_ptr, acpi_ut_get_type_name(node->type))); |
1da177e4 LT |
655 | |
656 | node->type = ACPI_TYPE_ANY; | |
657 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
658 | break; | |
659 | ||
660 | default: | |
661 | ||
662 | /* All other types are an error */ | |
663 | ||
4be44fcd | 664 | ACPI_REPORT_ERROR(("Invalid type (%s) for target of Scope operator [%4.4s]\n", acpi_ut_get_type_name(node->type), buffer_ptr)); |
1da177e4 LT |
665 | |
666 | return (AE_AML_OPERAND_TYPE); | |
667 | } | |
668 | break; | |
669 | ||
670 | default: | |
671 | ||
672 | /* All other opcodes */ | |
673 | ||
674 | if (op && op->common.node) { | |
675 | /* This op/node was previously entered into the namespace */ | |
676 | ||
677 | node = op->common.node; | |
678 | ||
4be44fcd LB |
679 | if (acpi_ns_opens_scope(object_type)) { |
680 | status = | |
681 | acpi_ds_scope_stack_push(node, object_type, | |
682 | walk_state); | |
683 | if (ACPI_FAILURE(status)) { | |
684 | return_ACPI_STATUS(status); | |
1da177e4 LT |
685 | } |
686 | ||
687 | } | |
4be44fcd | 688 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
689 | } |
690 | ||
691 | /* | |
692 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
693 | * as we go downward in the parse tree. Any necessary subobjects that |
694 | * involve arguments to the opcode must be created as we go back up the | |
695 | * parse tree later. | |
1da177e4 LT |
696 | * |
697 | * Note: Name may already exist if we are executing a deferred opcode. | |
698 | */ | |
699 | if (walk_state->deferred_node) { | |
700 | /* This name is already in the namespace, get the node */ | |
701 | ||
702 | node = walk_state->deferred_node; | |
703 | status = AE_OK; | |
704 | break; | |
705 | } | |
706 | ||
88ac00f5 RM |
707 | /* Add new entry into namespace */ |
708 | ||
4be44fcd LB |
709 | status = |
710 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
711 | object_type, ACPI_IMODE_LOAD_PASS2, | |
712 | ACPI_NS_NO_UPSEARCH, walk_state, &(node)); | |
1da177e4 LT |
713 | break; |
714 | } | |
715 | ||
4be44fcd LB |
716 | if (ACPI_FAILURE(status)) { |
717 | ACPI_REPORT_NSERROR(buffer_ptr, status); | |
718 | return_ACPI_STATUS(status); | |
1da177e4 LT |
719 | } |
720 | ||
1da177e4 LT |
721 | if (!op) { |
722 | /* Create a new op */ | |
723 | ||
4be44fcd | 724 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 725 | if (!op) { |
4be44fcd | 726 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
727 | } |
728 | ||
729 | /* Initialize the new op */ | |
730 | ||
731 | if (node) { | |
732 | op->named.name = node->name.integer; | |
733 | } | |
88ac00f5 | 734 | *out_op = op; |
1da177e4 LT |
735 | } |
736 | ||
737 | /* | |
738 | * Put the Node in the "op" object that the parser uses, so we | |
739 | * can get it again quickly when this scope is closed | |
740 | */ | |
741 | op->common.node = node; | |
742 | ||
4be44fcd | 743 | return_ACPI_STATUS(status); |
1da177e4 LT |
744 | } |
745 | ||
1da177e4 LT |
746 | /******************************************************************************* |
747 | * | |
748 | * FUNCTION: acpi_ds_load2_end_op | |
749 | * | |
750 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
751 | * |
752 | * RETURN: Status | |
753 | * | |
754 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
755 | * both control methods and everything else. | |
756 | * | |
757 | ******************************************************************************/ | |
758 | ||
4be44fcd | 759 | acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 760 | { |
4be44fcd LB |
761 | union acpi_parse_object *op; |
762 | acpi_status status = AE_OK; | |
763 | acpi_object_type object_type; | |
764 | struct acpi_namespace_node *node; | |
765 | union acpi_parse_object *arg; | |
766 | struct acpi_namespace_node *new_node; | |
1da177e4 | 767 | #ifndef ACPI_NO_METHOD_EXECUTION |
4be44fcd | 768 | u32 i; |
1da177e4 LT |
769 | #endif |
770 | ||
4be44fcd | 771 | ACPI_FUNCTION_TRACE("ds_load2_end_op"); |
1da177e4 LT |
772 | |
773 | op = walk_state->op; | |
4be44fcd LB |
774 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", |
775 | walk_state->op_info->name, op, walk_state)); | |
1da177e4 | 776 | |
88ac00f5 | 777 | /* Check if opcode had an associated namespace object */ |
1da177e4 LT |
778 | |
779 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
88ac00f5 | 780 | #ifndef ACPI_NO_METHOD_EXECUTION |
aff8c277 | 781 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
88ac00f5 RM |
782 | /* No namespace object. Executable opcode? */ |
783 | ||
784 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
4be44fcd LB |
785 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
786 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
787 | "End/EXEC: %s (fl %8.8X)\n", | |
788 | walk_state->op_info->name, | |
789 | walk_state->op_info->flags)); | |
88ac00f5 RM |
790 | |
791 | /* Executing a type1 or type2 opcode outside of a method */ | |
792 | ||
4be44fcd LB |
793 | status = acpi_ds_exec_end_op(walk_state); |
794 | return_ACPI_STATUS(status); | |
88ac00f5 | 795 | } |
aff8c277 | 796 | #endif |
88ac00f5 | 797 | #endif |
4be44fcd | 798 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
799 | } |
800 | ||
801 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
4be44fcd LB |
802 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
803 | "Ending scope Op=%p State=%p\n", op, | |
804 | walk_state)); | |
1da177e4 LT |
805 | } |
806 | ||
1da177e4 LT |
807 | object_type = walk_state->op_info->object_type; |
808 | ||
809 | /* | |
810 | * Get the Node/name from the earlier lookup | |
811 | * (It was saved in the *op structure) | |
812 | */ | |
813 | node = op->common.node; | |
814 | ||
815 | /* | |
816 | * Put the Node on the object stack (Contains the ACPI Name of | |
817 | * this object) | |
818 | */ | |
4be44fcd | 819 | walk_state->operands[0] = (void *)node; |
1da177e4 LT |
820 | walk_state->num_operands = 1; |
821 | ||
822 | /* Pop the scope stack */ | |
823 | ||
4be44fcd LB |
824 | if (acpi_ns_opens_scope(object_type) && |
825 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
826 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
827 | "(%s) Popping scope for Op %p\n", | |
828 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 829 | |
4be44fcd LB |
830 | status = acpi_ds_scope_stack_pop(walk_state); |
831 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
832 | goto cleanup; |
833 | } | |
834 | } | |
835 | ||
836 | /* | |
837 | * Named operations are as follows: | |
838 | * | |
839 | * AML_ALIAS | |
840 | * AML_BANKFIELD | |
841 | * AML_CREATEBITFIELD | |
842 | * AML_CREATEBYTEFIELD | |
843 | * AML_CREATEDWORDFIELD | |
844 | * AML_CREATEFIELD | |
845 | * AML_CREATEQWORDFIELD | |
846 | * AML_CREATEWORDFIELD | |
847 | * AML_DATA_REGION | |
848 | * AML_DEVICE | |
849 | * AML_EVENT | |
850 | * AML_FIELD | |
851 | * AML_INDEXFIELD | |
852 | * AML_METHOD | |
853 | * AML_METHODCALL | |
854 | * AML_MUTEX | |
855 | * AML_NAME | |
856 | * AML_NAMEDFIELD | |
857 | * AML_OPREGION | |
858 | * AML_POWERRES | |
859 | * AML_PROCESSOR | |
860 | * AML_SCOPE | |
861 | * AML_THERMALZONE | |
862 | */ | |
863 | ||
4be44fcd LB |
864 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
865 | "Create-Load [%s] State=%p Op=%p named_obj=%p\n", | |
866 | acpi_ps_get_opcode_name(op->common.aml_opcode), | |
867 | walk_state, op, node)); | |
1da177e4 LT |
868 | |
869 | /* Decode the opcode */ | |
870 | ||
871 | arg = op->common.value.arg; | |
872 | ||
873 | switch (walk_state->op_info->type) { | |
874 | #ifndef ACPI_NO_METHOD_EXECUTION | |
875 | ||
876 | case AML_TYPE_CREATE_FIELD: | |
877 | ||
878 | /* | |
879 | * Create the field object, but the field buffer and index must | |
880 | * be evaluated later during the execution phase | |
881 | */ | |
4be44fcd | 882 | status = acpi_ds_create_buffer_field(op, walk_state); |
1da177e4 LT |
883 | break; |
884 | ||
4be44fcd | 885 | case AML_TYPE_NAMED_FIELD: |
1da177e4 | 886 | |
28f55ebc BM |
887 | /* |
888 | * If we are executing a method, initialize the field | |
889 | */ | |
890 | if (walk_state->method_node) { | |
891 | status = acpi_ds_init_field_objects(op, walk_state); | |
892 | } | |
893 | ||
1da177e4 LT |
894 | switch (op->common.aml_opcode) { |
895 | case AML_INDEX_FIELD_OP: | |
896 | ||
4be44fcd LB |
897 | status = |
898 | acpi_ds_create_index_field(op, | |
899 | (acpi_handle) arg-> | |
900 | common.node, walk_state); | |
1da177e4 LT |
901 | break; |
902 | ||
903 | case AML_BANK_FIELD_OP: | |
904 | ||
4be44fcd LB |
905 | status = |
906 | acpi_ds_create_bank_field(op, arg->common.node, | |
907 | walk_state); | |
1da177e4 LT |
908 | break; |
909 | ||
910 | case AML_FIELD_OP: | |
911 | ||
4be44fcd LB |
912 | status = |
913 | acpi_ds_create_field(op, arg->common.node, | |
914 | walk_state); | |
1da177e4 LT |
915 | break; |
916 | ||
917 | default: | |
918 | /* All NAMED_FIELD opcodes must be handled above */ | |
919 | break; | |
920 | } | |
921 | break; | |
922 | ||
4be44fcd | 923 | case AML_TYPE_NAMED_SIMPLE: |
1da177e4 | 924 | |
4be44fcd LB |
925 | status = acpi_ds_create_operands(walk_state, arg); |
926 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
927 | goto cleanup; |
928 | } | |
929 | ||
930 | switch (op->common.aml_opcode) { | |
931 | case AML_PROCESSOR_OP: | |
932 | ||
4be44fcd | 933 | status = acpi_ex_create_processor(walk_state); |
1da177e4 LT |
934 | break; |
935 | ||
936 | case AML_POWER_RES_OP: | |
937 | ||
4be44fcd | 938 | status = acpi_ex_create_power_resource(walk_state); |
1da177e4 LT |
939 | break; |
940 | ||
941 | case AML_MUTEX_OP: | |
942 | ||
4be44fcd | 943 | status = acpi_ex_create_mutex(walk_state); |
1da177e4 LT |
944 | break; |
945 | ||
946 | case AML_EVENT_OP: | |
947 | ||
4be44fcd | 948 | status = acpi_ex_create_event(walk_state); |
1da177e4 LT |
949 | break; |
950 | ||
951 | case AML_DATA_REGION_OP: | |
952 | ||
4be44fcd | 953 | status = acpi_ex_create_table_region(walk_state); |
1da177e4 LT |
954 | break; |
955 | ||
956 | case AML_ALIAS_OP: | |
957 | ||
4be44fcd | 958 | status = acpi_ex_create_alias(walk_state); |
1da177e4 LT |
959 | break; |
960 | ||
961 | default: | |
962 | /* Unknown opcode */ | |
963 | ||
964 | status = AE_OK; | |
965 | goto cleanup; | |
966 | } | |
967 | ||
968 | /* Delete operands */ | |
969 | ||
970 | for (i = 1; i < walk_state->num_operands; i++) { | |
4be44fcd | 971 | acpi_ut_remove_reference(walk_state->operands[i]); |
1da177e4 LT |
972 | walk_state->operands[i] = NULL; |
973 | } | |
974 | ||
975 | break; | |
4be44fcd | 976 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
977 | |
978 | case AML_TYPE_NAMED_COMPLEX: | |
979 | ||
980 | switch (op->common.aml_opcode) { | |
981 | #ifndef ACPI_NO_METHOD_EXECUTION | |
982 | case AML_REGION_OP: | |
28f55ebc BM |
983 | |
984 | /* | |
985 | * If we are executing a method, initialize the region | |
986 | */ | |
987 | if (walk_state->method_node) { | |
988 | status = | |
989 | acpi_ex_create_region(op->named.data, | |
990 | op->named.length, | |
991 | (acpi_adr_space_type) | |
992 | ((op->common.value. | |
993 | arg)->common.value. | |
994 | integer), | |
995 | walk_state); | |
996 | if (ACPI_FAILURE(status)) { | |
997 | return (status); | |
998 | } | |
999 | } | |
1000 | ||
1da177e4 | 1001 | /* |
44f6c012 RM |
1002 | * The op_region is not fully parsed at this time. Only valid |
1003 | * argument is the space_id. (We must save the address of the | |
1004 | * AML of the address and length operands) | |
1da177e4 LT |
1005 | */ |
1006 | /* | |
1007 | * If we have a valid region, initialize it | |
1008 | * Namespace is NOT locked at this point. | |
1009 | */ | |
4be44fcd LB |
1010 | status = |
1011 | acpi_ev_initialize_region | |
1012 | (acpi_ns_get_attached_object(node), FALSE); | |
1013 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1014 | /* |
1015 | * If AE_NOT_EXIST is returned, it is not fatal | |
1016 | * because many regions get created before a handler | |
1017 | * is installed for said region. | |
1018 | */ | |
1019 | if (AE_NOT_EXIST == status) { | |
1020 | status = AE_OK; | |
1021 | } | |
1022 | } | |
1023 | break; | |
1024 | ||
1da177e4 LT |
1025 | case AML_NAME_OP: |
1026 | ||
4be44fcd | 1027 | status = acpi_ds_create_node(walk_state, node, op); |
1da177e4 | 1028 | break; |
defba1d8 BM |
1029 | |
1030 | case AML_METHOD_OP: | |
1031 | /* | |
1032 | * method_op pkg_length name_string method_flags term_list | |
1033 | * | |
1034 | * Note: We must create the method node/object pair as soon as we | |
1035 | * see the method declaration. This allows later pass1 parsing | |
1036 | * of invocations of the method (need to know the number of | |
1037 | * arguments.) | |
1038 | */ | |
1039 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
1040 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
1041 | walk_state, op, op->named.node)); | |
1042 | ||
1043 | if (!acpi_ns_get_attached_object(op->named.node)) { | |
1044 | walk_state->operands[0] = | |
1045 | ACPI_CAST_PTR(void, op->named.node); | |
1046 | walk_state->num_operands = 1; | |
1047 | ||
1048 | status = | |
1049 | acpi_ds_create_operands(walk_state, | |
1050 | op->common.value. | |
1051 | arg); | |
1052 | if (ACPI_SUCCESS(status)) { | |
1053 | status = | |
1054 | acpi_ex_create_method(op->named. | |
1055 | data, | |
1056 | op->named. | |
1057 | length, | |
1058 | walk_state); | |
1059 | } | |
1060 | walk_state->operands[0] = NULL; | |
1061 | walk_state->num_operands = 0; | |
1062 | ||
1063 | if (ACPI_FAILURE(status)) { | |
1064 | return_ACPI_STATUS(status); | |
1065 | } | |
1066 | } | |
1067 | break; | |
1068 | ||
4be44fcd | 1069 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1070 | |
1071 | default: | |
1072 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
1da177e4 LT |
1073 | break; |
1074 | } | |
1075 | break; | |
1076 | ||
1da177e4 LT |
1077 | case AML_CLASS_INTERNAL: |
1078 | ||
1079 | /* case AML_INT_NAMEPATH_OP: */ | |
1080 | break; | |
1081 | ||
1da177e4 LT |
1082 | case AML_CLASS_METHOD_CALL: |
1083 | ||
4be44fcd LB |
1084 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
1085 | "RESOLVING-method_call: State=%p Op=%p named_obj=%p\n", | |
1086 | walk_state, op, node)); | |
1da177e4 LT |
1087 | |
1088 | /* | |
1089 | * Lookup the method name and save the Node | |
1090 | */ | |
4be44fcd LB |
1091 | status = |
1092 | acpi_ns_lookup(walk_state->scope_info, | |
1093 | arg->common.value.string, ACPI_TYPE_ANY, | |
1094 | ACPI_IMODE_LOAD_PASS2, | |
1095 | ACPI_NS_SEARCH_PARENT | | |
1096 | ACPI_NS_DONT_OPEN_SCOPE, walk_state, | |
1097 | &(new_node)); | |
1098 | if (ACPI_SUCCESS(status)) { | |
bd6dbdf3 | 1099 | |
1da177e4 LT |
1100 | /* |
1101 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
1102 | * We didn't search for a method on purpose, to see if the name |
1103 | * would resolve | |
1da177e4 LT |
1104 | */ |
1105 | if (new_node->type != ACPI_TYPE_METHOD) { | |
1106 | status = AE_AML_OPERAND_TYPE; | |
1107 | } | |
1108 | ||
44f6c012 RM |
1109 | /* We could put the returned object (Node) on the object stack for |
1110 | * later, but for now, we will put it in the "op" object that the | |
1111 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
1112 | */ |
1113 | op->common.node = new_node; | |
4be44fcd LB |
1114 | } else { |
1115 | ACPI_REPORT_NSERROR(arg->common.value.string, status); | |
1da177e4 LT |
1116 | } |
1117 | break; | |
1118 | ||
1da177e4 LT |
1119 | default: |
1120 | break; | |
1121 | } | |
1122 | ||
4be44fcd | 1123 | cleanup: |
1da177e4 LT |
1124 | |
1125 | /* Remove the Node pushed at the very beginning */ | |
1126 | ||
1127 | walk_state->operands[0] = NULL; | |
1128 | walk_state->num_operands = 0; | |
4be44fcd | 1129 | return_ACPI_STATUS(status); |
1da177e4 | 1130 | } |