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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswload - Dispatcher namespace load callbacks | |
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/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 | 189 | if (ACPI_FAILURE(status)) { |
b8e4d893 | 190 | ACPI_ERROR_NAMESPACE(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 | ||
b8e4d893 BM |
236 | ACPI_ERROR((AE_INFO, |
237 | "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)", | |
238 | acpi_ut_get_type_name(node->type), path)); | |
1da177e4 | 239 | |
28f55ebc | 240 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
1da177e4 LT |
241 | } |
242 | break; | |
243 | ||
1da177e4 LT |
244 | default: |
245 | ||
246 | /* | |
44f6c012 RM |
247 | * For all other named opcodes, we will enter the name into |
248 | * the namespace. | |
1da177e4 LT |
249 | * |
250 | * Setup the search flags. | |
251 | * Since we are entering a name into the namespace, we do not want to | |
252 | * enable the search-to-root upsearch. | |
253 | * | |
254 | * There are only two conditions where it is acceptable that the name | |
255 | * already exists: | |
256 | * 1) the Scope() operator can reopen a scoping object that was | |
257 | * previously defined (Scope, Method, Device, etc.) | |
258 | * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, | |
259 | * buffer_field, or Package), the name of the object is already | |
260 | * in the namespace. | |
261 | */ | |
28f55ebc | 262 | |
1da177e4 LT |
263 | if (walk_state->deferred_node) { |
264 | /* This name is already in the namespace, get the node */ | |
265 | ||
266 | node = walk_state->deferred_node; | |
267 | status = AE_OK; | |
268 | break; | |
269 | } | |
270 | ||
28f55ebc BM |
271 | /* |
272 | * If we are executing a method, do not create any namespace objects | |
273 | * during the load phase, only during execution. | |
274 | */ | |
275 | if (walk_state->method_node) { | |
276 | node = NULL; | |
277 | status = AE_OK; | |
278 | break; | |
279 | } | |
280 | ||
1da177e4 LT |
281 | flags = ACPI_NS_NO_UPSEARCH; |
282 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
4be44fcd | 283 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { |
1da177e4 | 284 | flags |= ACPI_NS_ERROR_IF_FOUND; |
4be44fcd LB |
285 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
286 | "[%s] Cannot already exist\n", | |
287 | acpi_ut_get_type_name(object_type))); | |
288 | } else { | |
289 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
290 | "[%s] Both Find or Create allowed\n", | |
291 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
292 | } |
293 | ||
294 | /* | |
295 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
296 | * as we go downward in the parse tree. Any necessary subobjects that |
297 | * involve arguments to the opcode must be created as we go back up the | |
298 | * parse tree later. | |
1da177e4 | 299 | */ |
4be44fcd LB |
300 | status = |
301 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
302 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, | |
303 | &(node)); | |
304 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 305 | ACPI_ERROR_NAMESPACE(path, status); |
28f55ebc | 306 | return_ACPI_STATUS(status); |
1da177e4 LT |
307 | } |
308 | break; | |
309 | } | |
310 | ||
1da177e4 LT |
311 | /* Common exit */ |
312 | ||
313 | if (!op) { | |
314 | /* Create a new op */ | |
315 | ||
4be44fcd | 316 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 317 | if (!op) { |
28f55ebc | 318 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
319 | } |
320 | } | |
321 | ||
28f55ebc | 322 | /* Initialize the op */ |
1da177e4 LT |
323 | |
324 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
c51a4de8 | 325 | op->named.path = ACPI_CAST_PTR(u8, path); |
1da177e4 LT |
326 | #endif |
327 | ||
28f55ebc BM |
328 | if (node) { |
329 | /* | |
330 | * Put the Node in the "op" object that the parser uses, so we | |
331 | * can get it again quickly when this scope is closed | |
332 | */ | |
333 | op->common.node = node; | |
334 | op->named.name = node->name.integer; | |
335 | } | |
336 | ||
4be44fcd LB |
337 | acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
338 | op); | |
1da177e4 | 339 | *out_op = op; |
28f55ebc | 340 | return_ACPI_STATUS(status); |
1da177e4 LT |
341 | } |
342 | ||
1da177e4 LT |
343 | /******************************************************************************* |
344 | * | |
345 | * FUNCTION: acpi_ds_load1_end_op | |
346 | * | |
347 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
348 | * |
349 | * RETURN: Status | |
350 | * | |
351 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
352 | * both control methods and everything else. | |
353 | * | |
354 | ******************************************************************************/ | |
355 | ||
28f55ebc | 356 | acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 357 | { |
4be44fcd LB |
358 | union acpi_parse_object *op; |
359 | acpi_object_type object_type; | |
360 | acpi_status status = AE_OK; | |
1da177e4 | 361 | |
28f55ebc | 362 | ACPI_FUNCTION_TRACE("ds_load1_end_op"); |
1da177e4 LT |
363 | |
364 | op = walk_state->op; | |
4be44fcd LB |
365 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
366 | walk_state)); | |
1da177e4 LT |
367 | |
368 | /* We are only interested in opcodes that have an associated name */ | |
369 | ||
370 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
28f55ebc | 371 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
372 | } |
373 | ||
374 | /* Get the object type to determine if we should pop the scope */ | |
375 | ||
376 | object_type = walk_state->op_info->object_type; | |
377 | ||
378 | #ifndef ACPI_NO_METHOD_EXECUTION | |
379 | if (walk_state->op_info->flags & AML_FIELD) { | |
28f55ebc BM |
380 | /* |
381 | * If we are executing a method, do not create any namespace objects | |
382 | * during the load phase, only during execution. | |
383 | */ | |
384 | if (!walk_state->method_node) { | |
385 | if (walk_state->opcode == AML_FIELD_OP || | |
386 | walk_state->opcode == AML_BANK_FIELD_OP || | |
387 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
388 | status = | |
389 | acpi_ds_init_field_objects(op, walk_state); | |
390 | } | |
1da177e4 | 391 | } |
28f55ebc | 392 | return_ACPI_STATUS(status); |
1da177e4 LT |
393 | } |
394 | ||
28f55ebc BM |
395 | /* |
396 | * If we are executing a method, do not create any namespace objects | |
397 | * during the load phase, only during execution. | |
398 | */ | |
399 | if (!walk_state->method_node) { | |
400 | if (op->common.aml_opcode == AML_REGION_OP) { | |
401 | status = | |
402 | acpi_ex_create_region(op->named.data, | |
403 | op->named.length, | |
404 | (acpi_adr_space_type) | |
405 | ((op->common.value.arg)-> | |
406 | common.value.integer), | |
407 | walk_state); | |
408 | if (ACPI_FAILURE(status)) { | |
409 | return_ACPI_STATUS(status); | |
410 | } | |
1da177e4 LT |
411 | } |
412 | } | |
413 | #endif | |
414 | ||
415 | if (op->common.aml_opcode == AML_NAME_OP) { | |
416 | /* For Name opcode, get the object type from the argument */ | |
417 | ||
418 | if (op->common.value.arg) { | |
4be44fcd LB |
419 | object_type = (acpi_ps_get_opcode_info((op->common. |
420 | value.arg)-> | |
421 | common. | |
422 | aml_opcode))-> | |
423 | object_type; | |
28f55ebc BM |
424 | |
425 | /* Set node type if we have a namespace node */ | |
426 | ||
427 | if (op->common.node) { | |
428 | op->common.node->type = (u8) object_type; | |
429 | } | |
1da177e4 LT |
430 | } |
431 | } | |
432 | ||
defba1d8 BM |
433 | /* |
434 | * If we are executing a method, do not create any namespace objects | |
435 | * during the load phase, only during execution. | |
436 | */ | |
437 | if (!walk_state->method_node) { | |
438 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
439 | /* | |
440 | * method_op pkg_length name_string method_flags term_list | |
441 | * | |
442 | * Note: We must create the method node/object pair as soon as we | |
443 | * see the method declaration. This allows later pass1 parsing | |
444 | * of invocations of the method (need to know the number of | |
445 | * arguments.) | |
446 | */ | |
447 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
448 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
449 | walk_state, op, op->named.node)); | |
1da177e4 | 450 | |
defba1d8 BM |
451 | if (!acpi_ns_get_attached_object(op->named.node)) { |
452 | walk_state->operands[0] = | |
453 | ACPI_CAST_PTR(void, op->named.node); | |
454 | walk_state->num_operands = 1; | |
1da177e4 | 455 | |
defba1d8 BM |
456 | status = |
457 | acpi_ds_create_operands(walk_state, | |
458 | op->common.value. | |
459 | arg); | |
460 | if (ACPI_SUCCESS(status)) { | |
461 | status = | |
462 | acpi_ex_create_method(op->named. | |
463 | data, | |
464 | op->named. | |
465 | length, | |
466 | walk_state); | |
467 | } | |
468 | walk_state->operands[0] = NULL; | |
469 | walk_state->num_operands = 0; | |
1da177e4 | 470 | |
defba1d8 BM |
471 | if (ACPI_FAILURE(status)) { |
472 | return_ACPI_STATUS(status); | |
473 | } | |
1da177e4 LT |
474 | } |
475 | } | |
476 | } | |
477 | ||
defba1d8 | 478 | /* Pop the scope stack (only if loading a table) */ |
1da177e4 | 479 | |
defba1d8 | 480 | if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { |
4be44fcd LB |
481 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
482 | "(%s): Popping scope for Op %p\n", | |
483 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 484 | |
4be44fcd | 485 | status = acpi_ds_scope_stack_pop(walk_state); |
1da177e4 LT |
486 | } |
487 | ||
28f55ebc | 488 | return_ACPI_STATUS(status); |
1da177e4 LT |
489 | } |
490 | ||
1da177e4 LT |
491 | /******************************************************************************* |
492 | * | |
493 | * FUNCTION: acpi_ds_load2_begin_op | |
494 | * | |
495 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 496 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
497 | * |
498 | * RETURN: Status | |
499 | * | |
500 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
501 | * | |
502 | ******************************************************************************/ | |
503 | ||
504 | acpi_status | |
28f55ebc BM |
505 | acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, |
506 | union acpi_parse_object **out_op) | |
1da177e4 | 507 | { |
4be44fcd LB |
508 | union acpi_parse_object *op; |
509 | struct acpi_namespace_node *node; | |
510 | acpi_status status; | |
511 | acpi_object_type object_type; | |
512 | char *buffer_ptr; | |
1da177e4 | 513 | |
4be44fcd | 514 | ACPI_FUNCTION_TRACE("ds_load2_begin_op"); |
1da177e4 LT |
515 | |
516 | op = walk_state->op; | |
4be44fcd LB |
517 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
518 | walk_state)); | |
1da177e4 LT |
519 | |
520 | if (op) { | |
88ac00f5 | 521 | if ((walk_state->control_state) && |
4be44fcd LB |
522 | (walk_state->control_state->common.state == |
523 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
88ac00f5 RM |
524 | /* We are executing a while loop outside of a method */ |
525 | ||
4be44fcd LB |
526 | status = acpi_ds_exec_begin_op(walk_state, out_op); |
527 | return_ACPI_STATUS(status); | |
88ac00f5 RM |
528 | } |
529 | ||
1da177e4 LT |
530 | /* We only care about Namespace opcodes here */ |
531 | ||
44f6c012 | 532 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && |
4be44fcd LB |
533 | (walk_state->opcode != AML_INT_NAMEPATH_OP)) || |
534 | (!(walk_state->op_info->flags & AML_NAMED))) { | |
aff8c277 | 535 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
44f6c012 | 536 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || |
4be44fcd | 537 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
aff8c277 | 538 | |
4be44fcd LB |
539 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
540 | "Begin/EXEC: %s (fl %8.8X)\n", | |
541 | walk_state->op_info->name, | |
542 | walk_state->op_info->flags)); | |
88ac00f5 RM |
543 | |
544 | /* Executing a type1 or type2 opcode outside of a method */ | |
545 | ||
4be44fcd LB |
546 | status = |
547 | acpi_ds_exec_begin_op(walk_state, out_op); | |
548 | return_ACPI_STATUS(status); | |
44f6c012 | 549 | } |
aff8c277 | 550 | #endif |
4be44fcd | 551 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
552 | } |
553 | ||
44f6c012 RM |
554 | /* Get the name we are going to enter or lookup in the namespace */ |
555 | ||
1da177e4 LT |
556 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
557 | /* For Namepath op, get the path string */ | |
558 | ||
559 | buffer_ptr = op->common.value.string; | |
560 | if (!buffer_ptr) { | |
561 | /* No name, just exit */ | |
562 | ||
4be44fcd | 563 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 564 | } |
4be44fcd | 565 | } else { |
1da177e4 LT |
566 | /* Get name from the op */ |
567 | ||
4be44fcd | 568 | buffer_ptr = (char *)&op->named.name; |
1da177e4 | 569 | } |
4be44fcd | 570 | } else { |
1da177e4 LT |
571 | /* Get the namestring from the raw AML */ |
572 | ||
4be44fcd LB |
573 | buffer_ptr = |
574 | acpi_ps_get_next_namestring(&walk_state->parser_state); | |
1da177e4 LT |
575 | } |
576 | ||
577 | /* Map the opcode into an internal object type */ | |
578 | ||
579 | object_type = walk_state->op_info->object_type; | |
580 | ||
4be44fcd LB |
581 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
582 | "State=%p Op=%p Type=%X\n", walk_state, op, | |
583 | object_type)); | |
1da177e4 LT |
584 | |
585 | switch (walk_state->opcode) { | |
586 | case AML_FIELD_OP: | |
587 | case AML_BANK_FIELD_OP: | |
588 | case AML_INDEX_FIELD_OP: | |
589 | ||
590 | node = NULL; | |
591 | status = AE_OK; | |
592 | break; | |
593 | ||
594 | case AML_INT_NAMEPATH_OP: | |
595 | ||
596 | /* | |
44f6c012 RM |
597 | * The name_path is an object reference to an existing object. |
598 | * Don't enter the name into the namespace, but look it up | |
599 | * for use later. | |
1da177e4 | 600 | */ |
4be44fcd LB |
601 | status = |
602 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
603 | object_type, ACPI_IMODE_EXECUTE, | |
604 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
1da177e4 LT |
605 | break; |
606 | ||
607 | case AML_SCOPE_OP: | |
608 | ||
609 | /* | |
44f6c012 RM |
610 | * The Path is an object reference to an existing object. |
611 | * Don't enter the name into the namespace, but look it up | |
612 | * for use later. | |
1da177e4 | 613 | */ |
4be44fcd LB |
614 | status = |
615 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
616 | object_type, ACPI_IMODE_EXECUTE, | |
617 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
618 | if (ACPI_FAILURE(status)) { | |
73459f73 | 619 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
620 | if (status == AE_NOT_FOUND) { |
621 | status = AE_OK; | |
4be44fcd | 622 | } else { |
b8e4d893 | 623 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 LT |
624 | } |
625 | #else | |
b8e4d893 | 626 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 | 627 | #endif |
4be44fcd | 628 | return_ACPI_STATUS(status); |
1da177e4 LT |
629 | } |
630 | /* | |
631 | * We must check to make sure that the target is | |
632 | * one of the opcodes that actually opens a scope | |
633 | */ | |
634 | switch (node->type) { | |
4be44fcd | 635 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
636 | case ACPI_TYPE_DEVICE: |
637 | case ACPI_TYPE_POWER: | |
638 | case ACPI_TYPE_PROCESSOR: | |
639 | case ACPI_TYPE_THERMAL: | |
640 | ||
641 | /* These are acceptable types */ | |
642 | break; | |
643 | ||
644 | case ACPI_TYPE_INTEGER: | |
645 | case ACPI_TYPE_STRING: | |
646 | case ACPI_TYPE_BUFFER: | |
647 | ||
648 | /* | |
649 | * These types we will allow, but we will change the type. This | |
650 | * enables some existing code of the form: | |
651 | * | |
652 | * Name (DEB, 0) | |
653 | * Scope (DEB) { ... } | |
654 | */ | |
655 | ||
b8e4d893 BM |
656 | ACPI_WARNING((AE_INFO, |
657 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)", | |
658 | buffer_ptr, | |
659 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
660 | |
661 | node->type = ACPI_TYPE_ANY; | |
662 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
663 | break; | |
664 | ||
665 | default: | |
666 | ||
667 | /* All other types are an error */ | |
668 | ||
b8e4d893 BM |
669 | ACPI_ERROR((AE_INFO, |
670 | "Invalid type (%s) for target of Scope operator [%4.4s]", | |
671 | acpi_ut_get_type_name(node->type), | |
672 | buffer_ptr)); | |
1da177e4 LT |
673 | |
674 | return (AE_AML_OPERAND_TYPE); | |
675 | } | |
676 | break; | |
677 | ||
678 | default: | |
679 | ||
680 | /* All other opcodes */ | |
681 | ||
682 | if (op && op->common.node) { | |
683 | /* This op/node was previously entered into the namespace */ | |
684 | ||
685 | node = op->common.node; | |
686 | ||
4be44fcd LB |
687 | if (acpi_ns_opens_scope(object_type)) { |
688 | status = | |
689 | acpi_ds_scope_stack_push(node, object_type, | |
690 | walk_state); | |
691 | if (ACPI_FAILURE(status)) { | |
692 | return_ACPI_STATUS(status); | |
1da177e4 LT |
693 | } |
694 | ||
695 | } | |
4be44fcd | 696 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
697 | } |
698 | ||
699 | /* | |
700 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
701 | * as we go downward in the parse tree. Any necessary subobjects that |
702 | * involve arguments to the opcode must be created as we go back up the | |
703 | * parse tree later. | |
1da177e4 LT |
704 | * |
705 | * Note: Name may already exist if we are executing a deferred opcode. | |
706 | */ | |
707 | if (walk_state->deferred_node) { | |
708 | /* This name is already in the namespace, get the node */ | |
709 | ||
710 | node = walk_state->deferred_node; | |
711 | status = AE_OK; | |
712 | break; | |
713 | } | |
714 | ||
88ac00f5 RM |
715 | /* Add new entry into namespace */ |
716 | ||
4be44fcd LB |
717 | status = |
718 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
719 | object_type, ACPI_IMODE_LOAD_PASS2, | |
720 | ACPI_NS_NO_UPSEARCH, walk_state, &(node)); | |
1da177e4 LT |
721 | break; |
722 | } | |
723 | ||
4be44fcd | 724 | if (ACPI_FAILURE(status)) { |
b8e4d893 | 725 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
4be44fcd | 726 | return_ACPI_STATUS(status); |
1da177e4 LT |
727 | } |
728 | ||
1da177e4 LT |
729 | if (!op) { |
730 | /* Create a new op */ | |
731 | ||
4be44fcd | 732 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 733 | if (!op) { |
4be44fcd | 734 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
735 | } |
736 | ||
737 | /* Initialize the new op */ | |
738 | ||
739 | if (node) { | |
740 | op->named.name = node->name.integer; | |
741 | } | |
88ac00f5 | 742 | *out_op = op; |
1da177e4 LT |
743 | } |
744 | ||
745 | /* | |
746 | * Put the Node in the "op" object that the parser uses, so we | |
747 | * can get it again quickly when this scope is closed | |
748 | */ | |
749 | op->common.node = node; | |
750 | ||
4be44fcd | 751 | return_ACPI_STATUS(status); |
1da177e4 LT |
752 | } |
753 | ||
1da177e4 LT |
754 | /******************************************************************************* |
755 | * | |
756 | * FUNCTION: acpi_ds_load2_end_op | |
757 | * | |
758 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
759 | * |
760 | * RETURN: Status | |
761 | * | |
762 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
763 | * both control methods and everything else. | |
764 | * | |
765 | ******************************************************************************/ | |
766 | ||
4be44fcd | 767 | acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 768 | { |
4be44fcd LB |
769 | union acpi_parse_object *op; |
770 | acpi_status status = AE_OK; | |
771 | acpi_object_type object_type; | |
772 | struct acpi_namespace_node *node; | |
773 | union acpi_parse_object *arg; | |
774 | struct acpi_namespace_node *new_node; | |
1da177e4 | 775 | #ifndef ACPI_NO_METHOD_EXECUTION |
4be44fcd | 776 | u32 i; |
1da177e4 LT |
777 | #endif |
778 | ||
4be44fcd | 779 | ACPI_FUNCTION_TRACE("ds_load2_end_op"); |
1da177e4 LT |
780 | |
781 | op = walk_state->op; | |
4be44fcd LB |
782 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", |
783 | walk_state->op_info->name, op, walk_state)); | |
1da177e4 | 784 | |
88ac00f5 | 785 | /* Check if opcode had an associated namespace object */ |
1da177e4 LT |
786 | |
787 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
88ac00f5 | 788 | #ifndef ACPI_NO_METHOD_EXECUTION |
aff8c277 | 789 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
88ac00f5 RM |
790 | /* No namespace object. Executable opcode? */ |
791 | ||
792 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
4be44fcd LB |
793 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
794 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
795 | "End/EXEC: %s (fl %8.8X)\n", | |
796 | walk_state->op_info->name, | |
797 | walk_state->op_info->flags)); | |
88ac00f5 RM |
798 | |
799 | /* Executing a type1 or type2 opcode outside of a method */ | |
800 | ||
4be44fcd LB |
801 | status = acpi_ds_exec_end_op(walk_state); |
802 | return_ACPI_STATUS(status); | |
88ac00f5 | 803 | } |
aff8c277 | 804 | #endif |
88ac00f5 | 805 | #endif |
4be44fcd | 806 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
807 | } |
808 | ||
809 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
4be44fcd LB |
810 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
811 | "Ending scope Op=%p State=%p\n", op, | |
812 | walk_state)); | |
1da177e4 LT |
813 | } |
814 | ||
1da177e4 LT |
815 | object_type = walk_state->op_info->object_type; |
816 | ||
817 | /* | |
818 | * Get the Node/name from the earlier lookup | |
819 | * (It was saved in the *op structure) | |
820 | */ | |
821 | node = op->common.node; | |
822 | ||
823 | /* | |
824 | * Put the Node on the object stack (Contains the ACPI Name of | |
825 | * this object) | |
826 | */ | |
4be44fcd | 827 | walk_state->operands[0] = (void *)node; |
1da177e4 LT |
828 | walk_state->num_operands = 1; |
829 | ||
830 | /* Pop the scope stack */ | |
831 | ||
4be44fcd LB |
832 | if (acpi_ns_opens_scope(object_type) && |
833 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
834 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
835 | "(%s) Popping scope for Op %p\n", | |
836 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 837 | |
4be44fcd LB |
838 | status = acpi_ds_scope_stack_pop(walk_state); |
839 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
840 | goto cleanup; |
841 | } | |
842 | } | |
843 | ||
844 | /* | |
845 | * Named operations are as follows: | |
846 | * | |
847 | * AML_ALIAS | |
848 | * AML_BANKFIELD | |
849 | * AML_CREATEBITFIELD | |
850 | * AML_CREATEBYTEFIELD | |
851 | * AML_CREATEDWORDFIELD | |
852 | * AML_CREATEFIELD | |
853 | * AML_CREATEQWORDFIELD | |
854 | * AML_CREATEWORDFIELD | |
855 | * AML_DATA_REGION | |
856 | * AML_DEVICE | |
857 | * AML_EVENT | |
858 | * AML_FIELD | |
859 | * AML_INDEXFIELD | |
860 | * AML_METHOD | |
861 | * AML_METHODCALL | |
862 | * AML_MUTEX | |
863 | * AML_NAME | |
864 | * AML_NAMEDFIELD | |
865 | * AML_OPREGION | |
866 | * AML_POWERRES | |
867 | * AML_PROCESSOR | |
868 | * AML_SCOPE | |
869 | * AML_THERMALZONE | |
870 | */ | |
871 | ||
4be44fcd LB |
872 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
873 | "Create-Load [%s] State=%p Op=%p named_obj=%p\n", | |
874 | acpi_ps_get_opcode_name(op->common.aml_opcode), | |
875 | walk_state, op, node)); | |
1da177e4 LT |
876 | |
877 | /* Decode the opcode */ | |
878 | ||
879 | arg = op->common.value.arg; | |
880 | ||
881 | switch (walk_state->op_info->type) { | |
882 | #ifndef ACPI_NO_METHOD_EXECUTION | |
883 | ||
884 | case AML_TYPE_CREATE_FIELD: | |
885 | ||
886 | /* | |
887 | * Create the field object, but the field buffer and index must | |
888 | * be evaluated later during the execution phase | |
889 | */ | |
4be44fcd | 890 | status = acpi_ds_create_buffer_field(op, walk_state); |
1da177e4 LT |
891 | break; |
892 | ||
4be44fcd | 893 | case AML_TYPE_NAMED_FIELD: |
1da177e4 | 894 | |
28f55ebc BM |
895 | /* |
896 | * If we are executing a method, initialize the field | |
897 | */ | |
898 | if (walk_state->method_node) { | |
899 | status = acpi_ds_init_field_objects(op, walk_state); | |
900 | } | |
901 | ||
1da177e4 LT |
902 | switch (op->common.aml_opcode) { |
903 | case AML_INDEX_FIELD_OP: | |
904 | ||
4be44fcd LB |
905 | status = |
906 | acpi_ds_create_index_field(op, | |
907 | (acpi_handle) arg-> | |
908 | common.node, walk_state); | |
1da177e4 LT |
909 | break; |
910 | ||
911 | case AML_BANK_FIELD_OP: | |
912 | ||
4be44fcd LB |
913 | status = |
914 | acpi_ds_create_bank_field(op, arg->common.node, | |
915 | walk_state); | |
1da177e4 LT |
916 | break; |
917 | ||
918 | case AML_FIELD_OP: | |
919 | ||
4be44fcd LB |
920 | status = |
921 | acpi_ds_create_field(op, arg->common.node, | |
922 | walk_state); | |
1da177e4 LT |
923 | break; |
924 | ||
925 | default: | |
926 | /* All NAMED_FIELD opcodes must be handled above */ | |
927 | break; | |
928 | } | |
929 | break; | |
930 | ||
4be44fcd | 931 | case AML_TYPE_NAMED_SIMPLE: |
1da177e4 | 932 | |
4be44fcd LB |
933 | status = acpi_ds_create_operands(walk_state, arg); |
934 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
935 | goto cleanup; |
936 | } | |
937 | ||
938 | switch (op->common.aml_opcode) { | |
939 | case AML_PROCESSOR_OP: | |
940 | ||
4be44fcd | 941 | status = acpi_ex_create_processor(walk_state); |
1da177e4 LT |
942 | break; |
943 | ||
944 | case AML_POWER_RES_OP: | |
945 | ||
4be44fcd | 946 | status = acpi_ex_create_power_resource(walk_state); |
1da177e4 LT |
947 | break; |
948 | ||
949 | case AML_MUTEX_OP: | |
950 | ||
4be44fcd | 951 | status = acpi_ex_create_mutex(walk_state); |
1da177e4 LT |
952 | break; |
953 | ||
954 | case AML_EVENT_OP: | |
955 | ||
4be44fcd | 956 | status = acpi_ex_create_event(walk_state); |
1da177e4 LT |
957 | break; |
958 | ||
959 | case AML_DATA_REGION_OP: | |
960 | ||
4be44fcd | 961 | status = acpi_ex_create_table_region(walk_state); |
1da177e4 LT |
962 | break; |
963 | ||
964 | case AML_ALIAS_OP: | |
965 | ||
4be44fcd | 966 | status = acpi_ex_create_alias(walk_state); |
1da177e4 LT |
967 | break; |
968 | ||
969 | default: | |
970 | /* Unknown opcode */ | |
971 | ||
972 | status = AE_OK; | |
973 | goto cleanup; | |
974 | } | |
975 | ||
976 | /* Delete operands */ | |
977 | ||
978 | for (i = 1; i < walk_state->num_operands; i++) { | |
4be44fcd | 979 | acpi_ut_remove_reference(walk_state->operands[i]); |
1da177e4 LT |
980 | walk_state->operands[i] = NULL; |
981 | } | |
982 | ||
983 | break; | |
4be44fcd | 984 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
985 | |
986 | case AML_TYPE_NAMED_COMPLEX: | |
987 | ||
988 | switch (op->common.aml_opcode) { | |
989 | #ifndef ACPI_NO_METHOD_EXECUTION | |
990 | case AML_REGION_OP: | |
28f55ebc BM |
991 | |
992 | /* | |
993 | * If we are executing a method, initialize the region | |
994 | */ | |
995 | if (walk_state->method_node) { | |
996 | status = | |
997 | acpi_ex_create_region(op->named.data, | |
998 | op->named.length, | |
999 | (acpi_adr_space_type) | |
1000 | ((op->common.value. | |
1001 | arg)->common.value. | |
1002 | integer), | |
1003 | walk_state); | |
1004 | if (ACPI_FAILURE(status)) { | |
1005 | return (status); | |
1006 | } | |
1007 | } | |
1008 | ||
1da177e4 | 1009 | /* |
44f6c012 RM |
1010 | * The op_region is not fully parsed at this time. Only valid |
1011 | * argument is the space_id. (We must save the address of the | |
1012 | * AML of the address and length operands) | |
1da177e4 LT |
1013 | */ |
1014 | /* | |
1015 | * If we have a valid region, initialize it | |
1016 | * Namespace is NOT locked at this point. | |
1017 | */ | |
4be44fcd LB |
1018 | status = |
1019 | acpi_ev_initialize_region | |
1020 | (acpi_ns_get_attached_object(node), FALSE); | |
1021 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1022 | /* |
1023 | * If AE_NOT_EXIST is returned, it is not fatal | |
1024 | * because many regions get created before a handler | |
1025 | * is installed for said region. | |
1026 | */ | |
1027 | if (AE_NOT_EXIST == status) { | |
1028 | status = AE_OK; | |
1029 | } | |
1030 | } | |
1031 | break; | |
1032 | ||
1da177e4 LT |
1033 | case AML_NAME_OP: |
1034 | ||
4be44fcd | 1035 | status = acpi_ds_create_node(walk_state, node, op); |
1da177e4 | 1036 | break; |
defba1d8 BM |
1037 | |
1038 | case AML_METHOD_OP: | |
1039 | /* | |
1040 | * method_op pkg_length name_string method_flags term_list | |
1041 | * | |
1042 | * Note: We must create the method node/object pair as soon as we | |
1043 | * see the method declaration. This allows later pass1 parsing | |
1044 | * of invocations of the method (need to know the number of | |
1045 | * arguments.) | |
1046 | */ | |
1047 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
1048 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
1049 | walk_state, op, op->named.node)); | |
1050 | ||
1051 | if (!acpi_ns_get_attached_object(op->named.node)) { | |
1052 | walk_state->operands[0] = | |
1053 | ACPI_CAST_PTR(void, op->named.node); | |
1054 | walk_state->num_operands = 1; | |
1055 | ||
1056 | status = | |
1057 | acpi_ds_create_operands(walk_state, | |
1058 | op->common.value. | |
1059 | arg); | |
1060 | if (ACPI_SUCCESS(status)) { | |
1061 | status = | |
1062 | acpi_ex_create_method(op->named. | |
1063 | data, | |
1064 | op->named. | |
1065 | length, | |
1066 | walk_state); | |
1067 | } | |
1068 | walk_state->operands[0] = NULL; | |
1069 | walk_state->num_operands = 0; | |
1070 | ||
1071 | if (ACPI_FAILURE(status)) { | |
1072 | return_ACPI_STATUS(status); | |
1073 | } | |
1074 | } | |
1075 | break; | |
1076 | ||
4be44fcd | 1077 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1078 | |
1079 | default: | |
1080 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
1da177e4 LT |
1081 | break; |
1082 | } | |
1083 | break; | |
1084 | ||
1da177e4 LT |
1085 | case AML_CLASS_INTERNAL: |
1086 | ||
1087 | /* case AML_INT_NAMEPATH_OP: */ | |
1088 | break; | |
1089 | ||
1da177e4 LT |
1090 | case AML_CLASS_METHOD_CALL: |
1091 | ||
4be44fcd LB |
1092 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
1093 | "RESOLVING-method_call: State=%p Op=%p named_obj=%p\n", | |
1094 | walk_state, op, node)); | |
1da177e4 LT |
1095 | |
1096 | /* | |
1097 | * Lookup the method name and save the Node | |
1098 | */ | |
4be44fcd LB |
1099 | status = |
1100 | acpi_ns_lookup(walk_state->scope_info, | |
1101 | arg->common.value.string, ACPI_TYPE_ANY, | |
1102 | ACPI_IMODE_LOAD_PASS2, | |
1103 | ACPI_NS_SEARCH_PARENT | | |
1104 | ACPI_NS_DONT_OPEN_SCOPE, walk_state, | |
1105 | &(new_node)); | |
1106 | if (ACPI_SUCCESS(status)) { | |
bd6dbdf3 | 1107 | |
1da177e4 LT |
1108 | /* |
1109 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
1110 | * We didn't search for a method on purpose, to see if the name |
1111 | * would resolve | |
1da177e4 LT |
1112 | */ |
1113 | if (new_node->type != ACPI_TYPE_METHOD) { | |
1114 | status = AE_AML_OPERAND_TYPE; | |
1115 | } | |
1116 | ||
44f6c012 RM |
1117 | /* We could put the returned object (Node) on the object stack for |
1118 | * later, but for now, we will put it in the "op" object that the | |
1119 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
1120 | */ |
1121 | op->common.node = new_node; | |
4be44fcd | 1122 | } else { |
b8e4d893 | 1123 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
1da177e4 LT |
1124 | } |
1125 | break; | |
1126 | ||
1da177e4 LT |
1127 | default: |
1128 | break; | |
1129 | } | |
1130 | ||
4be44fcd | 1131 | cleanup: |
1da177e4 LT |
1132 | |
1133 | /* Remove the Node pushed at the very beginning */ | |
1134 | ||
1135 | walk_state->operands[0] = NULL; | |
1136 | walk_state->num_operands = 0; | |
4be44fcd | 1137 | return_ACPI_STATUS(status); |
1da177e4 | 1138 | } |