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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 | 263 | if (walk_state->deferred_node) { |
52fc0b02 | 264 | |
1da177e4 LT |
265 | /* This name is already in the namespace, get the node */ |
266 | ||
267 | node = walk_state->deferred_node; | |
268 | status = AE_OK; | |
269 | break; | |
270 | } | |
271 | ||
28f55ebc BM |
272 | /* |
273 | * If we are executing a method, do not create any namespace objects | |
274 | * during the load phase, only during execution. | |
275 | */ | |
276 | if (walk_state->method_node) { | |
277 | node = NULL; | |
278 | status = AE_OK; | |
279 | break; | |
280 | } | |
281 | ||
1da177e4 LT |
282 | flags = ACPI_NS_NO_UPSEARCH; |
283 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
4be44fcd | 284 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { |
1da177e4 | 285 | flags |= ACPI_NS_ERROR_IF_FOUND; |
4be44fcd LB |
286 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
287 | "[%s] Cannot already exist\n", | |
288 | acpi_ut_get_type_name(object_type))); | |
289 | } else { | |
290 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
291 | "[%s] Both Find or Create allowed\n", | |
292 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
293 | } |
294 | ||
295 | /* | |
296 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
297 | * as we go downward in the parse tree. Any necessary subobjects that |
298 | * involve arguments to the opcode must be created as we go back up the | |
299 | * parse tree later. | |
1da177e4 | 300 | */ |
4be44fcd LB |
301 | status = |
302 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
303 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, | |
304 | &(node)); | |
305 | if (ACPI_FAILURE(status)) { | |
b8e4d893 | 306 | ACPI_ERROR_NAMESPACE(path, status); |
28f55ebc | 307 | return_ACPI_STATUS(status); |
1da177e4 LT |
308 | } |
309 | break; | |
310 | } | |
311 | ||
1da177e4 LT |
312 | /* Common exit */ |
313 | ||
314 | if (!op) { | |
52fc0b02 | 315 | |
1da177e4 LT |
316 | /* Create a new op */ |
317 | ||
4be44fcd | 318 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 319 | if (!op) { |
28f55ebc | 320 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
321 | } |
322 | } | |
323 | ||
28f55ebc | 324 | /* Initialize the op */ |
1da177e4 LT |
325 | |
326 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
c51a4de8 | 327 | op->named.path = ACPI_CAST_PTR(u8, path); |
1da177e4 LT |
328 | #endif |
329 | ||
28f55ebc BM |
330 | if (node) { |
331 | /* | |
332 | * Put the Node in the "op" object that the parser uses, so we | |
333 | * can get it again quickly when this scope is closed | |
334 | */ | |
335 | op->common.node = node; | |
336 | op->named.name = node->name.integer; | |
337 | } | |
338 | ||
4be44fcd LB |
339 | acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
340 | op); | |
1da177e4 | 341 | *out_op = op; |
28f55ebc | 342 | return_ACPI_STATUS(status); |
1da177e4 LT |
343 | } |
344 | ||
1da177e4 LT |
345 | /******************************************************************************* |
346 | * | |
347 | * FUNCTION: acpi_ds_load1_end_op | |
348 | * | |
349 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
350 | * |
351 | * RETURN: Status | |
352 | * | |
353 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
354 | * both control methods and everything else. | |
355 | * | |
356 | ******************************************************************************/ | |
357 | ||
28f55ebc | 358 | acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 359 | { |
4be44fcd LB |
360 | union acpi_parse_object *op; |
361 | acpi_object_type object_type; | |
362 | acpi_status status = AE_OK; | |
1da177e4 | 363 | |
28f55ebc | 364 | ACPI_FUNCTION_TRACE("ds_load1_end_op"); |
1da177e4 LT |
365 | |
366 | op = walk_state->op; | |
4be44fcd LB |
367 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
368 | walk_state)); | |
1da177e4 LT |
369 | |
370 | /* We are only interested in opcodes that have an associated name */ | |
371 | ||
372 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
28f55ebc | 373 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
374 | } |
375 | ||
376 | /* Get the object type to determine if we should pop the scope */ | |
377 | ||
378 | object_type = walk_state->op_info->object_type; | |
379 | ||
380 | #ifndef ACPI_NO_METHOD_EXECUTION | |
381 | if (walk_state->op_info->flags & AML_FIELD) { | |
28f55ebc BM |
382 | /* |
383 | * If we are executing a method, do not create any namespace objects | |
384 | * during the load phase, only during execution. | |
385 | */ | |
386 | if (!walk_state->method_node) { | |
387 | if (walk_state->opcode == AML_FIELD_OP || | |
388 | walk_state->opcode == AML_BANK_FIELD_OP || | |
389 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
390 | status = | |
391 | acpi_ds_init_field_objects(op, walk_state); | |
392 | } | |
1da177e4 | 393 | } |
28f55ebc | 394 | return_ACPI_STATUS(status); |
1da177e4 LT |
395 | } |
396 | ||
28f55ebc BM |
397 | /* |
398 | * If we are executing a method, do not create any namespace objects | |
399 | * during the load phase, only during execution. | |
400 | */ | |
401 | if (!walk_state->method_node) { | |
402 | if (op->common.aml_opcode == AML_REGION_OP) { | |
403 | status = | |
404 | acpi_ex_create_region(op->named.data, | |
405 | op->named.length, | |
406 | (acpi_adr_space_type) | |
407 | ((op->common.value.arg)-> | |
408 | common.value.integer), | |
409 | walk_state); | |
410 | if (ACPI_FAILURE(status)) { | |
411 | return_ACPI_STATUS(status); | |
412 | } | |
1da177e4 LT |
413 | } |
414 | } | |
415 | #endif | |
416 | ||
417 | if (op->common.aml_opcode == AML_NAME_OP) { | |
52fc0b02 | 418 | |
1da177e4 LT |
419 | /* For Name opcode, get the object type from the argument */ |
420 | ||
421 | if (op->common.value.arg) { | |
4be44fcd LB |
422 | object_type = (acpi_ps_get_opcode_info((op->common. |
423 | value.arg)-> | |
424 | common. | |
425 | aml_opcode))-> | |
426 | object_type; | |
28f55ebc BM |
427 | |
428 | /* Set node type if we have a namespace node */ | |
429 | ||
430 | if (op->common.node) { | |
431 | op->common.node->type = (u8) object_type; | |
432 | } | |
1da177e4 LT |
433 | } |
434 | } | |
435 | ||
defba1d8 BM |
436 | /* |
437 | * If we are executing a method, do not create any namespace objects | |
438 | * during the load phase, only during execution. | |
439 | */ | |
440 | if (!walk_state->method_node) { | |
441 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
442 | /* | |
443 | * method_op pkg_length name_string method_flags term_list | |
444 | * | |
445 | * Note: We must create the method node/object pair as soon as we | |
446 | * see the method declaration. This allows later pass1 parsing | |
447 | * of invocations of the method (need to know the number of | |
448 | * arguments.) | |
449 | */ | |
450 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
451 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
452 | walk_state, op, op->named.node)); | |
1da177e4 | 453 | |
defba1d8 BM |
454 | if (!acpi_ns_get_attached_object(op->named.node)) { |
455 | walk_state->operands[0] = | |
456 | ACPI_CAST_PTR(void, op->named.node); | |
457 | walk_state->num_operands = 1; | |
1da177e4 | 458 | |
defba1d8 BM |
459 | status = |
460 | acpi_ds_create_operands(walk_state, | |
461 | op->common.value. | |
462 | arg); | |
463 | if (ACPI_SUCCESS(status)) { | |
464 | status = | |
465 | acpi_ex_create_method(op->named. | |
466 | data, | |
467 | op->named. | |
468 | length, | |
469 | walk_state); | |
470 | } | |
471 | walk_state->operands[0] = NULL; | |
472 | walk_state->num_operands = 0; | |
1da177e4 | 473 | |
defba1d8 BM |
474 | if (ACPI_FAILURE(status)) { |
475 | return_ACPI_STATUS(status); | |
476 | } | |
1da177e4 LT |
477 | } |
478 | } | |
479 | } | |
480 | ||
defba1d8 | 481 | /* Pop the scope stack (only if loading a table) */ |
1da177e4 | 482 | |
defba1d8 | 483 | if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { |
4be44fcd LB |
484 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
485 | "(%s): Popping scope for Op %p\n", | |
486 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 487 | |
4be44fcd | 488 | status = acpi_ds_scope_stack_pop(walk_state); |
1da177e4 LT |
489 | } |
490 | ||
28f55ebc | 491 | return_ACPI_STATUS(status); |
1da177e4 LT |
492 | } |
493 | ||
1da177e4 LT |
494 | /******************************************************************************* |
495 | * | |
496 | * FUNCTION: acpi_ds_load2_begin_op | |
497 | * | |
498 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 499 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
500 | * |
501 | * RETURN: Status | |
502 | * | |
503 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
504 | * | |
505 | ******************************************************************************/ | |
506 | ||
507 | acpi_status | |
28f55ebc BM |
508 | acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, |
509 | union acpi_parse_object **out_op) | |
1da177e4 | 510 | { |
4be44fcd LB |
511 | union acpi_parse_object *op; |
512 | struct acpi_namespace_node *node; | |
513 | acpi_status status; | |
514 | acpi_object_type object_type; | |
515 | char *buffer_ptr; | |
1da177e4 | 516 | |
4be44fcd | 517 | ACPI_FUNCTION_TRACE("ds_load2_begin_op"); |
1da177e4 LT |
518 | |
519 | op = walk_state->op; | |
4be44fcd LB |
520 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
521 | walk_state)); | |
1da177e4 LT |
522 | |
523 | if (op) { | |
88ac00f5 | 524 | if ((walk_state->control_state) && |
4be44fcd LB |
525 | (walk_state->control_state->common.state == |
526 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
52fc0b02 | 527 | |
88ac00f5 RM |
528 | /* We are executing a while loop outside of a method */ |
529 | ||
4be44fcd LB |
530 | status = acpi_ds_exec_begin_op(walk_state, out_op); |
531 | return_ACPI_STATUS(status); | |
88ac00f5 RM |
532 | } |
533 | ||
1da177e4 LT |
534 | /* We only care about Namespace opcodes here */ |
535 | ||
44f6c012 | 536 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && |
4be44fcd LB |
537 | (walk_state->opcode != AML_INT_NAMEPATH_OP)) || |
538 | (!(walk_state->op_info->flags & AML_NAMED))) { | |
aff8c277 | 539 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
44f6c012 | 540 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || |
4be44fcd | 541 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
aff8c277 | 542 | |
4be44fcd LB |
543 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
544 | "Begin/EXEC: %s (fl %8.8X)\n", | |
545 | walk_state->op_info->name, | |
546 | walk_state->op_info->flags)); | |
88ac00f5 RM |
547 | |
548 | /* Executing a type1 or type2 opcode outside of a method */ | |
549 | ||
4be44fcd LB |
550 | status = |
551 | acpi_ds_exec_begin_op(walk_state, out_op); | |
552 | return_ACPI_STATUS(status); | |
44f6c012 | 553 | } |
aff8c277 | 554 | #endif |
4be44fcd | 555 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
556 | } |
557 | ||
44f6c012 RM |
558 | /* Get the name we are going to enter or lookup in the namespace */ |
559 | ||
1da177e4 | 560 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
52fc0b02 | 561 | |
1da177e4 LT |
562 | /* For Namepath op, get the path string */ |
563 | ||
564 | buffer_ptr = op->common.value.string; | |
565 | if (!buffer_ptr) { | |
52fc0b02 | 566 | |
1da177e4 LT |
567 | /* No name, just exit */ |
568 | ||
4be44fcd | 569 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 570 | } |
4be44fcd | 571 | } else { |
1da177e4 LT |
572 | /* Get name from the op */ |
573 | ||
4be44fcd | 574 | buffer_ptr = (char *)&op->named.name; |
1da177e4 | 575 | } |
4be44fcd | 576 | } else { |
1da177e4 LT |
577 | /* Get the namestring from the raw AML */ |
578 | ||
4be44fcd LB |
579 | buffer_ptr = |
580 | acpi_ps_get_next_namestring(&walk_state->parser_state); | |
1da177e4 LT |
581 | } |
582 | ||
583 | /* Map the opcode into an internal object type */ | |
584 | ||
585 | object_type = walk_state->op_info->object_type; | |
586 | ||
4be44fcd LB |
587 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
588 | "State=%p Op=%p Type=%X\n", walk_state, op, | |
589 | object_type)); | |
1da177e4 LT |
590 | |
591 | switch (walk_state->opcode) { | |
592 | case AML_FIELD_OP: | |
593 | case AML_BANK_FIELD_OP: | |
594 | case AML_INDEX_FIELD_OP: | |
595 | ||
596 | node = NULL; | |
597 | status = AE_OK; | |
598 | break; | |
599 | ||
600 | case AML_INT_NAMEPATH_OP: | |
601 | ||
602 | /* | |
44f6c012 RM |
603 | * The name_path is an object reference to an existing object. |
604 | * Don't enter the name into the namespace, but look it up | |
605 | * for use later. | |
1da177e4 | 606 | */ |
4be44fcd LB |
607 | status = |
608 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
609 | object_type, ACPI_IMODE_EXECUTE, | |
610 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
1da177e4 LT |
611 | break; |
612 | ||
613 | case AML_SCOPE_OP: | |
614 | ||
615 | /* | |
44f6c012 RM |
616 | * The Path is an object reference to an existing object. |
617 | * Don't enter the name into the namespace, but look it up | |
618 | * for use later. | |
1da177e4 | 619 | */ |
4be44fcd LB |
620 | status = |
621 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
622 | object_type, ACPI_IMODE_EXECUTE, | |
623 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
624 | if (ACPI_FAILURE(status)) { | |
73459f73 | 625 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
626 | if (status == AE_NOT_FOUND) { |
627 | status = AE_OK; | |
4be44fcd | 628 | } else { |
b8e4d893 | 629 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 LT |
630 | } |
631 | #else | |
b8e4d893 | 632 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 | 633 | #endif |
4be44fcd | 634 | return_ACPI_STATUS(status); |
1da177e4 LT |
635 | } |
636 | /* | |
637 | * We must check to make sure that the target is | |
638 | * one of the opcodes that actually opens a scope | |
639 | */ | |
640 | switch (node->type) { | |
4be44fcd | 641 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
642 | case ACPI_TYPE_DEVICE: |
643 | case ACPI_TYPE_POWER: | |
644 | case ACPI_TYPE_PROCESSOR: | |
645 | case ACPI_TYPE_THERMAL: | |
646 | ||
647 | /* These are acceptable types */ | |
648 | break; | |
649 | ||
650 | case ACPI_TYPE_INTEGER: | |
651 | case ACPI_TYPE_STRING: | |
652 | case ACPI_TYPE_BUFFER: | |
653 | ||
654 | /* | |
655 | * These types we will allow, but we will change the type. This | |
656 | * enables some existing code of the form: | |
657 | * | |
658 | * Name (DEB, 0) | |
659 | * Scope (DEB) { ... } | |
660 | */ | |
661 | ||
b8e4d893 BM |
662 | ACPI_WARNING((AE_INFO, |
663 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)", | |
664 | buffer_ptr, | |
665 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
666 | |
667 | node->type = ACPI_TYPE_ANY; | |
668 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
669 | break; | |
670 | ||
671 | default: | |
672 | ||
673 | /* All other types are an error */ | |
674 | ||
b8e4d893 BM |
675 | ACPI_ERROR((AE_INFO, |
676 | "Invalid type (%s) for target of Scope operator [%4.4s]", | |
677 | acpi_ut_get_type_name(node->type), | |
678 | buffer_ptr)); | |
1da177e4 LT |
679 | |
680 | return (AE_AML_OPERAND_TYPE); | |
681 | } | |
682 | break; | |
683 | ||
684 | default: | |
685 | ||
686 | /* All other opcodes */ | |
687 | ||
688 | if (op && op->common.node) { | |
52fc0b02 | 689 | |
1da177e4 LT |
690 | /* This op/node was previously entered into the namespace */ |
691 | ||
692 | node = op->common.node; | |
693 | ||
4be44fcd LB |
694 | if (acpi_ns_opens_scope(object_type)) { |
695 | status = | |
696 | acpi_ds_scope_stack_push(node, object_type, | |
697 | walk_state); | |
698 | if (ACPI_FAILURE(status)) { | |
699 | return_ACPI_STATUS(status); | |
1da177e4 LT |
700 | } |
701 | ||
702 | } | |
4be44fcd | 703 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
704 | } |
705 | ||
706 | /* | |
707 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
708 | * as we go downward in the parse tree. Any necessary subobjects that |
709 | * involve arguments to the opcode must be created as we go back up the | |
710 | * parse tree later. | |
1da177e4 LT |
711 | * |
712 | * Note: Name may already exist if we are executing a deferred opcode. | |
713 | */ | |
714 | if (walk_state->deferred_node) { | |
52fc0b02 | 715 | |
1da177e4 LT |
716 | /* This name is already in the namespace, get the node */ |
717 | ||
718 | node = walk_state->deferred_node; | |
719 | status = AE_OK; | |
720 | break; | |
721 | } | |
722 | ||
88ac00f5 RM |
723 | /* Add new entry into namespace */ |
724 | ||
4be44fcd LB |
725 | status = |
726 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
727 | object_type, ACPI_IMODE_LOAD_PASS2, | |
728 | ACPI_NS_NO_UPSEARCH, walk_state, &(node)); | |
1da177e4 LT |
729 | break; |
730 | } | |
731 | ||
4be44fcd | 732 | if (ACPI_FAILURE(status)) { |
b8e4d893 | 733 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
4be44fcd | 734 | return_ACPI_STATUS(status); |
1da177e4 LT |
735 | } |
736 | ||
1da177e4 | 737 | if (!op) { |
52fc0b02 | 738 | |
1da177e4 LT |
739 | /* Create a new op */ |
740 | ||
4be44fcd | 741 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 742 | if (!op) { |
4be44fcd | 743 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
744 | } |
745 | ||
746 | /* Initialize the new op */ | |
747 | ||
748 | if (node) { | |
749 | op->named.name = node->name.integer; | |
750 | } | |
88ac00f5 | 751 | *out_op = op; |
1da177e4 LT |
752 | } |
753 | ||
754 | /* | |
755 | * Put the Node in the "op" object that the parser uses, so we | |
756 | * can get it again quickly when this scope is closed | |
757 | */ | |
758 | op->common.node = node; | |
759 | ||
4be44fcd | 760 | return_ACPI_STATUS(status); |
1da177e4 LT |
761 | } |
762 | ||
1da177e4 LT |
763 | /******************************************************************************* |
764 | * | |
765 | * FUNCTION: acpi_ds_load2_end_op | |
766 | * | |
767 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
768 | * |
769 | * RETURN: Status | |
770 | * | |
771 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
772 | * both control methods and everything else. | |
773 | * | |
774 | ******************************************************************************/ | |
775 | ||
4be44fcd | 776 | acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 777 | { |
4be44fcd LB |
778 | union acpi_parse_object *op; |
779 | acpi_status status = AE_OK; | |
780 | acpi_object_type object_type; | |
781 | struct acpi_namespace_node *node; | |
782 | union acpi_parse_object *arg; | |
783 | struct acpi_namespace_node *new_node; | |
1da177e4 | 784 | #ifndef ACPI_NO_METHOD_EXECUTION |
4be44fcd | 785 | u32 i; |
1da177e4 LT |
786 | #endif |
787 | ||
4be44fcd | 788 | ACPI_FUNCTION_TRACE("ds_load2_end_op"); |
1da177e4 LT |
789 | |
790 | op = walk_state->op; | |
4be44fcd LB |
791 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", |
792 | walk_state->op_info->name, op, walk_state)); | |
1da177e4 | 793 | |
88ac00f5 | 794 | /* Check if opcode had an associated namespace object */ |
1da177e4 LT |
795 | |
796 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
88ac00f5 | 797 | #ifndef ACPI_NO_METHOD_EXECUTION |
aff8c277 | 798 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
88ac00f5 RM |
799 | /* No namespace object. Executable opcode? */ |
800 | ||
801 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
4be44fcd LB |
802 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
803 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
804 | "End/EXEC: %s (fl %8.8X)\n", | |
805 | walk_state->op_info->name, | |
806 | walk_state->op_info->flags)); | |
88ac00f5 RM |
807 | |
808 | /* Executing a type1 or type2 opcode outside of a method */ | |
809 | ||
4be44fcd LB |
810 | status = acpi_ds_exec_end_op(walk_state); |
811 | return_ACPI_STATUS(status); | |
88ac00f5 | 812 | } |
aff8c277 | 813 | #endif |
88ac00f5 | 814 | #endif |
4be44fcd | 815 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
816 | } |
817 | ||
818 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
4be44fcd LB |
819 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
820 | "Ending scope Op=%p State=%p\n", op, | |
821 | walk_state)); | |
1da177e4 LT |
822 | } |
823 | ||
1da177e4 LT |
824 | object_type = walk_state->op_info->object_type; |
825 | ||
826 | /* | |
827 | * Get the Node/name from the earlier lookup | |
828 | * (It was saved in the *op structure) | |
829 | */ | |
830 | node = op->common.node; | |
831 | ||
832 | /* | |
833 | * Put the Node on the object stack (Contains the ACPI Name of | |
834 | * this object) | |
835 | */ | |
4be44fcd | 836 | walk_state->operands[0] = (void *)node; |
1da177e4 LT |
837 | walk_state->num_operands = 1; |
838 | ||
839 | /* Pop the scope stack */ | |
840 | ||
4be44fcd LB |
841 | if (acpi_ns_opens_scope(object_type) && |
842 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
843 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
844 | "(%s) Popping scope for Op %p\n", | |
845 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 846 | |
4be44fcd LB |
847 | status = acpi_ds_scope_stack_pop(walk_state); |
848 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
849 | goto cleanup; |
850 | } | |
851 | } | |
852 | ||
853 | /* | |
854 | * Named operations are as follows: | |
855 | * | |
856 | * AML_ALIAS | |
857 | * AML_BANKFIELD | |
858 | * AML_CREATEBITFIELD | |
859 | * AML_CREATEBYTEFIELD | |
860 | * AML_CREATEDWORDFIELD | |
861 | * AML_CREATEFIELD | |
862 | * AML_CREATEQWORDFIELD | |
863 | * AML_CREATEWORDFIELD | |
864 | * AML_DATA_REGION | |
865 | * AML_DEVICE | |
866 | * AML_EVENT | |
867 | * AML_FIELD | |
868 | * AML_INDEXFIELD | |
869 | * AML_METHOD | |
870 | * AML_METHODCALL | |
871 | * AML_MUTEX | |
872 | * AML_NAME | |
873 | * AML_NAMEDFIELD | |
874 | * AML_OPREGION | |
875 | * AML_POWERRES | |
876 | * AML_PROCESSOR | |
877 | * AML_SCOPE | |
878 | * AML_THERMALZONE | |
879 | */ | |
880 | ||
4be44fcd LB |
881 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
882 | "Create-Load [%s] State=%p Op=%p named_obj=%p\n", | |
883 | acpi_ps_get_opcode_name(op->common.aml_opcode), | |
884 | walk_state, op, node)); | |
1da177e4 LT |
885 | |
886 | /* Decode the opcode */ | |
887 | ||
888 | arg = op->common.value.arg; | |
889 | ||
890 | switch (walk_state->op_info->type) { | |
891 | #ifndef ACPI_NO_METHOD_EXECUTION | |
892 | ||
893 | case AML_TYPE_CREATE_FIELD: | |
894 | ||
895 | /* | |
896 | * Create the field object, but the field buffer and index must | |
897 | * be evaluated later during the execution phase | |
898 | */ | |
4be44fcd | 899 | status = acpi_ds_create_buffer_field(op, walk_state); |
1da177e4 LT |
900 | break; |
901 | ||
4be44fcd | 902 | case AML_TYPE_NAMED_FIELD: |
1da177e4 | 903 | |
28f55ebc BM |
904 | /* |
905 | * If we are executing a method, initialize the field | |
906 | */ | |
907 | if (walk_state->method_node) { | |
908 | status = acpi_ds_init_field_objects(op, walk_state); | |
909 | } | |
910 | ||
1da177e4 LT |
911 | switch (op->common.aml_opcode) { |
912 | case AML_INDEX_FIELD_OP: | |
913 | ||
4be44fcd LB |
914 | status = |
915 | acpi_ds_create_index_field(op, | |
916 | (acpi_handle) arg-> | |
917 | common.node, walk_state); | |
1da177e4 LT |
918 | break; |
919 | ||
920 | case AML_BANK_FIELD_OP: | |
921 | ||
4be44fcd LB |
922 | status = |
923 | acpi_ds_create_bank_field(op, arg->common.node, | |
924 | walk_state); | |
1da177e4 LT |
925 | break; |
926 | ||
927 | case AML_FIELD_OP: | |
928 | ||
4be44fcd LB |
929 | status = |
930 | acpi_ds_create_field(op, arg->common.node, | |
931 | walk_state); | |
1da177e4 LT |
932 | break; |
933 | ||
934 | default: | |
935 | /* All NAMED_FIELD opcodes must be handled above */ | |
936 | break; | |
937 | } | |
938 | break; | |
939 | ||
4be44fcd | 940 | case AML_TYPE_NAMED_SIMPLE: |
1da177e4 | 941 | |
4be44fcd LB |
942 | status = acpi_ds_create_operands(walk_state, arg); |
943 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
944 | goto cleanup; |
945 | } | |
946 | ||
947 | switch (op->common.aml_opcode) { | |
948 | case AML_PROCESSOR_OP: | |
949 | ||
4be44fcd | 950 | status = acpi_ex_create_processor(walk_state); |
1da177e4 LT |
951 | break; |
952 | ||
953 | case AML_POWER_RES_OP: | |
954 | ||
4be44fcd | 955 | status = acpi_ex_create_power_resource(walk_state); |
1da177e4 LT |
956 | break; |
957 | ||
958 | case AML_MUTEX_OP: | |
959 | ||
4be44fcd | 960 | status = acpi_ex_create_mutex(walk_state); |
1da177e4 LT |
961 | break; |
962 | ||
963 | case AML_EVENT_OP: | |
964 | ||
4be44fcd | 965 | status = acpi_ex_create_event(walk_state); |
1da177e4 LT |
966 | break; |
967 | ||
968 | case AML_DATA_REGION_OP: | |
969 | ||
4be44fcd | 970 | status = acpi_ex_create_table_region(walk_state); |
1da177e4 LT |
971 | break; |
972 | ||
973 | case AML_ALIAS_OP: | |
974 | ||
4be44fcd | 975 | status = acpi_ex_create_alias(walk_state); |
1da177e4 LT |
976 | break; |
977 | ||
978 | default: | |
979 | /* Unknown opcode */ | |
980 | ||
981 | status = AE_OK; | |
982 | goto cleanup; | |
983 | } | |
984 | ||
985 | /* Delete operands */ | |
986 | ||
987 | for (i = 1; i < walk_state->num_operands; i++) { | |
4be44fcd | 988 | acpi_ut_remove_reference(walk_state->operands[i]); |
1da177e4 LT |
989 | walk_state->operands[i] = NULL; |
990 | } | |
991 | ||
992 | break; | |
4be44fcd | 993 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
994 | |
995 | case AML_TYPE_NAMED_COMPLEX: | |
996 | ||
997 | switch (op->common.aml_opcode) { | |
998 | #ifndef ACPI_NO_METHOD_EXECUTION | |
999 | case AML_REGION_OP: | |
28f55ebc BM |
1000 | |
1001 | /* | |
1002 | * If we are executing a method, initialize the region | |
1003 | */ | |
1004 | if (walk_state->method_node) { | |
1005 | status = | |
1006 | acpi_ex_create_region(op->named.data, | |
1007 | op->named.length, | |
1008 | (acpi_adr_space_type) | |
1009 | ((op->common.value. | |
1010 | arg)->common.value. | |
1011 | integer), | |
1012 | walk_state); | |
1013 | if (ACPI_FAILURE(status)) { | |
1014 | return (status); | |
1015 | } | |
1016 | } | |
1017 | ||
1da177e4 | 1018 | /* |
44f6c012 RM |
1019 | * The op_region is not fully parsed at this time. Only valid |
1020 | * argument is the space_id. (We must save the address of the | |
1021 | * AML of the address and length operands) | |
1da177e4 LT |
1022 | */ |
1023 | /* | |
1024 | * If we have a valid region, initialize it | |
1025 | * Namespace is NOT locked at this point. | |
1026 | */ | |
4be44fcd LB |
1027 | status = |
1028 | acpi_ev_initialize_region | |
1029 | (acpi_ns_get_attached_object(node), FALSE); | |
1030 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1031 | /* |
1032 | * If AE_NOT_EXIST is returned, it is not fatal | |
1033 | * because many regions get created before a handler | |
1034 | * is installed for said region. | |
1035 | */ | |
1036 | if (AE_NOT_EXIST == status) { | |
1037 | status = AE_OK; | |
1038 | } | |
1039 | } | |
1040 | break; | |
1041 | ||
1da177e4 LT |
1042 | case AML_NAME_OP: |
1043 | ||
4be44fcd | 1044 | status = acpi_ds_create_node(walk_state, node, op); |
1da177e4 | 1045 | break; |
defba1d8 BM |
1046 | |
1047 | case AML_METHOD_OP: | |
1048 | /* | |
1049 | * method_op pkg_length name_string method_flags term_list | |
1050 | * | |
1051 | * Note: We must create the method node/object pair as soon as we | |
1052 | * see the method declaration. This allows later pass1 parsing | |
1053 | * of invocations of the method (need to know the number of | |
1054 | * arguments.) | |
1055 | */ | |
1056 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
1057 | "LOADING-Method: State=%p Op=%p named_obj=%p\n", | |
1058 | walk_state, op, op->named.node)); | |
1059 | ||
1060 | if (!acpi_ns_get_attached_object(op->named.node)) { | |
1061 | walk_state->operands[0] = | |
1062 | ACPI_CAST_PTR(void, op->named.node); | |
1063 | walk_state->num_operands = 1; | |
1064 | ||
1065 | status = | |
1066 | acpi_ds_create_operands(walk_state, | |
1067 | op->common.value. | |
1068 | arg); | |
1069 | if (ACPI_SUCCESS(status)) { | |
1070 | status = | |
1071 | acpi_ex_create_method(op->named. | |
1072 | data, | |
1073 | op->named. | |
1074 | length, | |
1075 | walk_state); | |
1076 | } | |
1077 | walk_state->operands[0] = NULL; | |
1078 | walk_state->num_operands = 0; | |
1079 | ||
1080 | if (ACPI_FAILURE(status)) { | |
1081 | return_ACPI_STATUS(status); | |
1082 | } | |
1083 | } | |
1084 | break; | |
1085 | ||
4be44fcd | 1086 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1087 | |
1088 | default: | |
1089 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
1da177e4 LT |
1090 | break; |
1091 | } | |
1092 | break; | |
1093 | ||
1da177e4 LT |
1094 | case AML_CLASS_INTERNAL: |
1095 | ||
1096 | /* case AML_INT_NAMEPATH_OP: */ | |
1097 | break; | |
1098 | ||
1da177e4 LT |
1099 | case AML_CLASS_METHOD_CALL: |
1100 | ||
4be44fcd LB |
1101 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
1102 | "RESOLVING-method_call: State=%p Op=%p named_obj=%p\n", | |
1103 | walk_state, op, node)); | |
1da177e4 LT |
1104 | |
1105 | /* | |
1106 | * Lookup the method name and save the Node | |
1107 | */ | |
4be44fcd LB |
1108 | status = |
1109 | acpi_ns_lookup(walk_state->scope_info, | |
1110 | arg->common.value.string, ACPI_TYPE_ANY, | |
1111 | ACPI_IMODE_LOAD_PASS2, | |
1112 | ACPI_NS_SEARCH_PARENT | | |
1113 | ACPI_NS_DONT_OPEN_SCOPE, walk_state, | |
1114 | &(new_node)); | |
1115 | if (ACPI_SUCCESS(status)) { | |
1da177e4 LT |
1116 | /* |
1117 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
1118 | * We didn't search for a method on purpose, to see if the name |
1119 | * would resolve | |
1da177e4 LT |
1120 | */ |
1121 | if (new_node->type != ACPI_TYPE_METHOD) { | |
1122 | status = AE_AML_OPERAND_TYPE; | |
1123 | } | |
1124 | ||
44f6c012 RM |
1125 | /* We could put the returned object (Node) on the object stack for |
1126 | * later, but for now, we will put it in the "op" object that the | |
1127 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
1128 | */ |
1129 | op->common.node = new_node; | |
4be44fcd | 1130 | } else { |
b8e4d893 | 1131 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
1da177e4 LT |
1132 | } |
1133 | break; | |
1134 | ||
1da177e4 LT |
1135 | default: |
1136 | break; | |
1137 | } | |
1138 | ||
4be44fcd | 1139 | cleanup: |
1da177e4 LT |
1140 | |
1141 | /* Remove the Node pushed at the very beginning */ | |
1142 | ||
1143 | walk_state->operands[0] = NULL; | |
1144 | walk_state->num_operands = 0; | |
4be44fcd | 1145 | return_ACPI_STATUS(status); |
1da177e4 | 1146 | } |