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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 | |
b229cf92 | 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 | */ | |
958dd242 | 181 | acpi_dm_add_to_external_list(path, ACPI_TYPE_DEVICE, 0); |
4be44fcd LB |
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, | |
958dd242 | 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, | |
958dd242 | 304 | &node); |
4be44fcd | 305 | if (ACPI_FAILURE(status)) { |
958dd242 BM |
306 | if (status == AE_ALREADY_EXISTS) { |
307 | ||
308 | /* The name already exists in this scope */ | |
309 | ||
310 | if (node->flags & ANOBJ_IS_EXTERNAL) { | |
311 | /* | |
312 | * Allow one create on an object or segment that was | |
313 | * previously declared External | |
314 | */ | |
315 | node->flags &= ~ANOBJ_IS_EXTERNAL; | |
316 | node->type = (u8) object_type; | |
317 | ||
318 | /* Just retyped a node, probably will need to open a scope */ | |
319 | ||
320 | if (acpi_ns_opens_scope(object_type)) { | |
321 | status = | |
322 | acpi_ds_scope_stack_push | |
323 | (node, object_type, | |
324 | walk_state); | |
325 | if (ACPI_FAILURE(status)) { | |
326 | return_ACPI_STATUS | |
327 | (status); | |
328 | } | |
329 | } | |
330 | status = AE_OK; | |
331 | } | |
332 | } | |
333 | ||
334 | if (ACPI_FAILURE(status)) { | |
335 | ||
336 | ACPI_ERROR_NAMESPACE(path, status); | |
337 | return_ACPI_STATUS(status); | |
338 | } | |
1da177e4 LT |
339 | } |
340 | break; | |
341 | } | |
342 | ||
1da177e4 LT |
343 | /* Common exit */ |
344 | ||
345 | if (!op) { | |
52fc0b02 | 346 | |
1da177e4 LT |
347 | /* Create a new op */ |
348 | ||
4be44fcd | 349 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 350 | if (!op) { |
28f55ebc | 351 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
352 | } |
353 | } | |
354 | ||
28f55ebc | 355 | /* Initialize the op */ |
1da177e4 LT |
356 | |
357 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
c51a4de8 | 358 | op->named.path = ACPI_CAST_PTR(u8, path); |
1da177e4 LT |
359 | #endif |
360 | ||
28f55ebc BM |
361 | if (node) { |
362 | /* | |
363 | * Put the Node in the "op" object that the parser uses, so we | |
364 | * can get it again quickly when this scope is closed | |
365 | */ | |
366 | op->common.node = node; | |
367 | op->named.name = node->name.integer; | |
368 | } | |
369 | ||
4be44fcd LB |
370 | acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
371 | op); | |
1da177e4 | 372 | *out_op = op; |
28f55ebc | 373 | return_ACPI_STATUS(status); |
1da177e4 LT |
374 | } |
375 | ||
1da177e4 LT |
376 | /******************************************************************************* |
377 | * | |
378 | * FUNCTION: acpi_ds_load1_end_op | |
379 | * | |
380 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
381 | * |
382 | * RETURN: Status | |
383 | * | |
384 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
385 | * both control methods and everything else. | |
386 | * | |
387 | ******************************************************************************/ | |
388 | ||
28f55ebc | 389 | acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 390 | { |
4be44fcd LB |
391 | union acpi_parse_object *op; |
392 | acpi_object_type object_type; | |
393 | acpi_status status = AE_OK; | |
1da177e4 | 394 | |
b229cf92 | 395 | ACPI_FUNCTION_TRACE(ds_load1_end_op); |
1da177e4 LT |
396 | |
397 | op = walk_state->op; | |
4be44fcd LB |
398 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
399 | walk_state)); | |
1da177e4 LT |
400 | |
401 | /* We are only interested in opcodes that have an associated name */ | |
402 | ||
403 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
28f55ebc | 404 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
405 | } |
406 | ||
407 | /* Get the object type to determine if we should pop the scope */ | |
408 | ||
409 | object_type = walk_state->op_info->object_type; | |
410 | ||
411 | #ifndef ACPI_NO_METHOD_EXECUTION | |
412 | if (walk_state->op_info->flags & AML_FIELD) { | |
28f55ebc BM |
413 | /* |
414 | * If we are executing a method, do not create any namespace objects | |
415 | * during the load phase, only during execution. | |
416 | */ | |
417 | if (!walk_state->method_node) { | |
418 | if (walk_state->opcode == AML_FIELD_OP || | |
419 | walk_state->opcode == AML_BANK_FIELD_OP || | |
420 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
421 | status = | |
422 | acpi_ds_init_field_objects(op, walk_state); | |
423 | } | |
1da177e4 | 424 | } |
28f55ebc | 425 | return_ACPI_STATUS(status); |
1da177e4 LT |
426 | } |
427 | ||
28f55ebc BM |
428 | /* |
429 | * If we are executing a method, do not create any namespace objects | |
430 | * during the load phase, only during execution. | |
431 | */ | |
432 | if (!walk_state->method_node) { | |
433 | if (op->common.aml_opcode == AML_REGION_OP) { | |
434 | status = | |
435 | acpi_ex_create_region(op->named.data, | |
436 | op->named.length, | |
437 | (acpi_adr_space_type) | |
438 | ((op->common.value.arg)-> | |
439 | common.value.integer), | |
440 | walk_state); | |
441 | if (ACPI_FAILURE(status)) { | |
442 | return_ACPI_STATUS(status); | |
443 | } | |
1da177e4 LT |
444 | } |
445 | } | |
446 | #endif | |
447 | ||
448 | if (op->common.aml_opcode == AML_NAME_OP) { | |
52fc0b02 | 449 | |
1da177e4 LT |
450 | /* For Name opcode, get the object type from the argument */ |
451 | ||
452 | if (op->common.value.arg) { | |
4be44fcd LB |
453 | object_type = (acpi_ps_get_opcode_info((op->common. |
454 | value.arg)-> | |
455 | common. | |
456 | aml_opcode))-> | |
457 | object_type; | |
28f55ebc BM |
458 | |
459 | /* Set node type if we have a namespace node */ | |
460 | ||
461 | if (op->common.node) { | |
462 | op->common.node->type = (u8) object_type; | |
463 | } | |
1da177e4 LT |
464 | } |
465 | } | |
466 | ||
defba1d8 BM |
467 | /* |
468 | * If we are executing a method, do not create any namespace objects | |
469 | * during the load phase, only during execution. | |
470 | */ | |
471 | if (!walk_state->method_node) { | |
472 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
473 | /* | |
474 | * method_op pkg_length name_string method_flags term_list | |
475 | * | |
476 | * Note: We must create the method node/object pair as soon as we | |
477 | * see the method declaration. This allows later pass1 parsing | |
478 | * of invocations of the method (need to know the number of | |
479 | * arguments.) | |
480 | */ | |
481 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
b229cf92 | 482 | "LOADING-Method: State=%p Op=%p NamedObj=%p\n", |
defba1d8 | 483 | walk_state, op, op->named.node)); |
1da177e4 | 484 | |
defba1d8 BM |
485 | if (!acpi_ns_get_attached_object(op->named.node)) { |
486 | walk_state->operands[0] = | |
487 | ACPI_CAST_PTR(void, op->named.node); | |
488 | walk_state->num_operands = 1; | |
1da177e4 | 489 | |
defba1d8 BM |
490 | status = |
491 | acpi_ds_create_operands(walk_state, | |
492 | op->common.value. | |
493 | arg); | |
494 | if (ACPI_SUCCESS(status)) { | |
495 | status = | |
496 | acpi_ex_create_method(op->named. | |
497 | data, | |
498 | op->named. | |
499 | length, | |
500 | walk_state); | |
501 | } | |
502 | walk_state->operands[0] = NULL; | |
503 | walk_state->num_operands = 0; | |
1da177e4 | 504 | |
defba1d8 BM |
505 | if (ACPI_FAILURE(status)) { |
506 | return_ACPI_STATUS(status); | |
507 | } | |
1da177e4 LT |
508 | } |
509 | } | |
510 | } | |
511 | ||
defba1d8 | 512 | /* Pop the scope stack (only if loading a table) */ |
1da177e4 | 513 | |
defba1d8 | 514 | if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { |
4be44fcd LB |
515 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
516 | "(%s): Popping scope for Op %p\n", | |
517 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 518 | |
4be44fcd | 519 | status = acpi_ds_scope_stack_pop(walk_state); |
1da177e4 LT |
520 | } |
521 | ||
28f55ebc | 522 | return_ACPI_STATUS(status); |
1da177e4 LT |
523 | } |
524 | ||
1da177e4 LT |
525 | /******************************************************************************* |
526 | * | |
527 | * FUNCTION: acpi_ds_load2_begin_op | |
528 | * | |
529 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 530 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
531 | * |
532 | * RETURN: Status | |
533 | * | |
534 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
535 | * | |
536 | ******************************************************************************/ | |
537 | ||
538 | acpi_status | |
28f55ebc BM |
539 | acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, |
540 | union acpi_parse_object **out_op) | |
1da177e4 | 541 | { |
4be44fcd LB |
542 | union acpi_parse_object *op; |
543 | struct acpi_namespace_node *node; | |
544 | acpi_status status; | |
545 | acpi_object_type object_type; | |
546 | char *buffer_ptr; | |
1da177e4 | 547 | |
b229cf92 | 548 | ACPI_FUNCTION_TRACE(ds_load2_begin_op); |
1da177e4 LT |
549 | |
550 | op = walk_state->op; | |
4be44fcd LB |
551 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
552 | walk_state)); | |
1da177e4 LT |
553 | |
554 | if (op) { | |
88ac00f5 | 555 | if ((walk_state->control_state) && |
4be44fcd LB |
556 | (walk_state->control_state->common.state == |
557 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
52fc0b02 | 558 | |
88ac00f5 RM |
559 | /* We are executing a while loop outside of a method */ |
560 | ||
4be44fcd LB |
561 | status = acpi_ds_exec_begin_op(walk_state, out_op); |
562 | return_ACPI_STATUS(status); | |
88ac00f5 RM |
563 | } |
564 | ||
1da177e4 LT |
565 | /* We only care about Namespace opcodes here */ |
566 | ||
44f6c012 | 567 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && |
4be44fcd LB |
568 | (walk_state->opcode != AML_INT_NAMEPATH_OP)) || |
569 | (!(walk_state->op_info->flags & AML_NAMED))) { | |
aff8c277 | 570 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
44f6c012 | 571 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || |
4be44fcd | 572 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
aff8c277 | 573 | |
4be44fcd LB |
574 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
575 | "Begin/EXEC: %s (fl %8.8X)\n", | |
576 | walk_state->op_info->name, | |
577 | walk_state->op_info->flags)); | |
88ac00f5 RM |
578 | |
579 | /* Executing a type1 or type2 opcode outside of a method */ | |
580 | ||
4be44fcd LB |
581 | status = |
582 | acpi_ds_exec_begin_op(walk_state, out_op); | |
583 | return_ACPI_STATUS(status); | |
44f6c012 | 584 | } |
aff8c277 | 585 | #endif |
4be44fcd | 586 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
587 | } |
588 | ||
44f6c012 RM |
589 | /* Get the name we are going to enter or lookup in the namespace */ |
590 | ||
1da177e4 | 591 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
52fc0b02 | 592 | |
1da177e4 LT |
593 | /* For Namepath op, get the path string */ |
594 | ||
595 | buffer_ptr = op->common.value.string; | |
596 | if (!buffer_ptr) { | |
52fc0b02 | 597 | |
1da177e4 LT |
598 | /* No name, just exit */ |
599 | ||
4be44fcd | 600 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 601 | } |
4be44fcd | 602 | } else { |
1da177e4 LT |
603 | /* Get name from the op */ |
604 | ||
4be44fcd | 605 | buffer_ptr = (char *)&op->named.name; |
1da177e4 | 606 | } |
4be44fcd | 607 | } else { |
1da177e4 LT |
608 | /* Get the namestring from the raw AML */ |
609 | ||
4be44fcd LB |
610 | buffer_ptr = |
611 | acpi_ps_get_next_namestring(&walk_state->parser_state); | |
1da177e4 LT |
612 | } |
613 | ||
614 | /* Map the opcode into an internal object type */ | |
615 | ||
616 | object_type = walk_state->op_info->object_type; | |
617 | ||
4be44fcd LB |
618 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
619 | "State=%p Op=%p Type=%X\n", walk_state, op, | |
620 | object_type)); | |
1da177e4 LT |
621 | |
622 | switch (walk_state->opcode) { | |
623 | case AML_FIELD_OP: | |
624 | case AML_BANK_FIELD_OP: | |
625 | case AML_INDEX_FIELD_OP: | |
626 | ||
627 | node = NULL; | |
628 | status = AE_OK; | |
629 | break; | |
630 | ||
631 | case AML_INT_NAMEPATH_OP: | |
632 | ||
633 | /* | |
44f6c012 RM |
634 | * The name_path is an object reference to an existing object. |
635 | * Don't enter the name into the namespace, but look it up | |
636 | * for use later. | |
1da177e4 | 637 | */ |
4be44fcd LB |
638 | status = |
639 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
640 | object_type, ACPI_IMODE_EXECUTE, | |
641 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
1da177e4 LT |
642 | break; |
643 | ||
644 | case AML_SCOPE_OP: | |
645 | ||
646 | /* | |
44f6c012 RM |
647 | * The Path is an object reference to an existing object. |
648 | * Don't enter the name into the namespace, but look it up | |
649 | * for use later. | |
1da177e4 | 650 | */ |
4be44fcd LB |
651 | status = |
652 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
653 | object_type, ACPI_IMODE_EXECUTE, | |
654 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
655 | if (ACPI_FAILURE(status)) { | |
73459f73 | 656 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
657 | if (status == AE_NOT_FOUND) { |
658 | status = AE_OK; | |
4be44fcd | 659 | } else { |
b8e4d893 | 660 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 LT |
661 | } |
662 | #else | |
b8e4d893 | 663 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 | 664 | #endif |
4be44fcd | 665 | return_ACPI_STATUS(status); |
1da177e4 LT |
666 | } |
667 | /* | |
668 | * We must check to make sure that the target is | |
669 | * one of the opcodes that actually opens a scope | |
670 | */ | |
671 | switch (node->type) { | |
4be44fcd | 672 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
673 | case ACPI_TYPE_DEVICE: |
674 | case ACPI_TYPE_POWER: | |
675 | case ACPI_TYPE_PROCESSOR: | |
676 | case ACPI_TYPE_THERMAL: | |
677 | ||
678 | /* These are acceptable types */ | |
679 | break; | |
680 | ||
681 | case ACPI_TYPE_INTEGER: | |
682 | case ACPI_TYPE_STRING: | |
683 | case ACPI_TYPE_BUFFER: | |
684 | ||
685 | /* | |
686 | * These types we will allow, but we will change the type. This | |
687 | * enables some existing code of the form: | |
688 | * | |
689 | * Name (DEB, 0) | |
690 | * Scope (DEB) { ... } | |
691 | */ | |
692 | ||
b8e4d893 BM |
693 | ACPI_WARNING((AE_INFO, |
694 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)", | |
695 | buffer_ptr, | |
696 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
697 | |
698 | node->type = ACPI_TYPE_ANY; | |
699 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
700 | break; | |
701 | ||
702 | default: | |
703 | ||
704 | /* All other types are an error */ | |
705 | ||
b8e4d893 BM |
706 | ACPI_ERROR((AE_INFO, |
707 | "Invalid type (%s) for target of Scope operator [%4.4s]", | |
708 | acpi_ut_get_type_name(node->type), | |
709 | buffer_ptr)); | |
1da177e4 LT |
710 | |
711 | return (AE_AML_OPERAND_TYPE); | |
712 | } | |
713 | break; | |
714 | ||
715 | default: | |
716 | ||
717 | /* All other opcodes */ | |
718 | ||
719 | if (op && op->common.node) { | |
52fc0b02 | 720 | |
1da177e4 LT |
721 | /* This op/node was previously entered into the namespace */ |
722 | ||
723 | node = op->common.node; | |
724 | ||
4be44fcd LB |
725 | if (acpi_ns_opens_scope(object_type)) { |
726 | status = | |
727 | acpi_ds_scope_stack_push(node, object_type, | |
728 | walk_state); | |
729 | if (ACPI_FAILURE(status)) { | |
730 | return_ACPI_STATUS(status); | |
1da177e4 LT |
731 | } |
732 | ||
733 | } | |
4be44fcd | 734 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
735 | } |
736 | ||
737 | /* | |
738 | * Enter the named type into the internal namespace. We enter the name | |
44f6c012 RM |
739 | * as we go downward in the parse tree. Any necessary subobjects that |
740 | * involve arguments to the opcode must be created as we go back up the | |
741 | * parse tree later. | |
1da177e4 LT |
742 | * |
743 | * Note: Name may already exist if we are executing a deferred opcode. | |
744 | */ | |
745 | if (walk_state->deferred_node) { | |
52fc0b02 | 746 | |
1da177e4 LT |
747 | /* This name is already in the namespace, get the node */ |
748 | ||
749 | node = walk_state->deferred_node; | |
750 | status = AE_OK; | |
751 | break; | |
752 | } | |
753 | ||
88ac00f5 RM |
754 | /* Add new entry into namespace */ |
755 | ||
4be44fcd LB |
756 | status = |
757 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
758 | object_type, ACPI_IMODE_LOAD_PASS2, | |
759 | ACPI_NS_NO_UPSEARCH, walk_state, &(node)); | |
1da177e4 LT |
760 | break; |
761 | } | |
762 | ||
4be44fcd | 763 | if (ACPI_FAILURE(status)) { |
b8e4d893 | 764 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
4be44fcd | 765 | return_ACPI_STATUS(status); |
1da177e4 LT |
766 | } |
767 | ||
1da177e4 | 768 | if (!op) { |
52fc0b02 | 769 | |
1da177e4 LT |
770 | /* Create a new op */ |
771 | ||
4be44fcd | 772 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 773 | if (!op) { |
4be44fcd | 774 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
775 | } |
776 | ||
777 | /* Initialize the new op */ | |
778 | ||
779 | if (node) { | |
780 | op->named.name = node->name.integer; | |
781 | } | |
88ac00f5 | 782 | *out_op = op; |
1da177e4 LT |
783 | } |
784 | ||
785 | /* | |
786 | * Put the Node in the "op" object that the parser uses, so we | |
787 | * can get it again quickly when this scope is closed | |
788 | */ | |
789 | op->common.node = node; | |
790 | ||
4be44fcd | 791 | return_ACPI_STATUS(status); |
1da177e4 LT |
792 | } |
793 | ||
1da177e4 LT |
794 | /******************************************************************************* |
795 | * | |
796 | * FUNCTION: acpi_ds_load2_end_op | |
797 | * | |
798 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
799 | * |
800 | * RETURN: Status | |
801 | * | |
802 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
803 | * both control methods and everything else. | |
804 | * | |
805 | ******************************************************************************/ | |
806 | ||
4be44fcd | 807 | acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 808 | { |
4be44fcd LB |
809 | union acpi_parse_object *op; |
810 | acpi_status status = AE_OK; | |
811 | acpi_object_type object_type; | |
812 | struct acpi_namespace_node *node; | |
813 | union acpi_parse_object *arg; | |
814 | struct acpi_namespace_node *new_node; | |
1da177e4 | 815 | #ifndef ACPI_NO_METHOD_EXECUTION |
4be44fcd | 816 | u32 i; |
1da177e4 LT |
817 | #endif |
818 | ||
b229cf92 | 819 | ACPI_FUNCTION_TRACE(ds_load2_end_op); |
1da177e4 LT |
820 | |
821 | op = walk_state->op; | |
4be44fcd LB |
822 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", |
823 | walk_state->op_info->name, op, walk_state)); | |
1da177e4 | 824 | |
88ac00f5 | 825 | /* Check if opcode had an associated namespace object */ |
1da177e4 LT |
826 | |
827 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
88ac00f5 | 828 | #ifndef ACPI_NO_METHOD_EXECUTION |
aff8c277 | 829 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
88ac00f5 RM |
830 | /* No namespace object. Executable opcode? */ |
831 | ||
832 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
4be44fcd LB |
833 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
834 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
835 | "End/EXEC: %s (fl %8.8X)\n", | |
836 | walk_state->op_info->name, | |
837 | walk_state->op_info->flags)); | |
88ac00f5 RM |
838 | |
839 | /* Executing a type1 or type2 opcode outside of a method */ | |
840 | ||
4be44fcd LB |
841 | status = acpi_ds_exec_end_op(walk_state); |
842 | return_ACPI_STATUS(status); | |
88ac00f5 | 843 | } |
aff8c277 | 844 | #endif |
88ac00f5 | 845 | #endif |
4be44fcd | 846 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
847 | } |
848 | ||
849 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
4be44fcd LB |
850 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
851 | "Ending scope Op=%p State=%p\n", op, | |
852 | walk_state)); | |
1da177e4 LT |
853 | } |
854 | ||
1da177e4 LT |
855 | object_type = walk_state->op_info->object_type; |
856 | ||
857 | /* | |
858 | * Get the Node/name from the earlier lookup | |
859 | * (It was saved in the *op structure) | |
860 | */ | |
861 | node = op->common.node; | |
862 | ||
863 | /* | |
864 | * Put the Node on the object stack (Contains the ACPI Name of | |
865 | * this object) | |
866 | */ | |
4be44fcd | 867 | walk_state->operands[0] = (void *)node; |
1da177e4 LT |
868 | walk_state->num_operands = 1; |
869 | ||
870 | /* Pop the scope stack */ | |
871 | ||
4be44fcd LB |
872 | if (acpi_ns_opens_scope(object_type) && |
873 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
874 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
875 | "(%s) Popping scope for Op %p\n", | |
876 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 877 | |
4be44fcd LB |
878 | status = acpi_ds_scope_stack_pop(walk_state); |
879 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
880 | goto cleanup; |
881 | } | |
882 | } | |
883 | ||
884 | /* | |
885 | * Named operations are as follows: | |
886 | * | |
887 | * AML_ALIAS | |
888 | * AML_BANKFIELD | |
889 | * AML_CREATEBITFIELD | |
890 | * AML_CREATEBYTEFIELD | |
891 | * AML_CREATEDWORDFIELD | |
892 | * AML_CREATEFIELD | |
893 | * AML_CREATEQWORDFIELD | |
894 | * AML_CREATEWORDFIELD | |
895 | * AML_DATA_REGION | |
896 | * AML_DEVICE | |
897 | * AML_EVENT | |
898 | * AML_FIELD | |
899 | * AML_INDEXFIELD | |
900 | * AML_METHOD | |
901 | * AML_METHODCALL | |
902 | * AML_MUTEX | |
903 | * AML_NAME | |
904 | * AML_NAMEDFIELD | |
905 | * AML_OPREGION | |
906 | * AML_POWERRES | |
907 | * AML_PROCESSOR | |
908 | * AML_SCOPE | |
909 | * AML_THERMALZONE | |
910 | */ | |
911 | ||
4be44fcd | 912 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
b229cf92 | 913 | "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", |
4be44fcd LB |
914 | acpi_ps_get_opcode_name(op->common.aml_opcode), |
915 | walk_state, op, node)); | |
1da177e4 LT |
916 | |
917 | /* Decode the opcode */ | |
918 | ||
919 | arg = op->common.value.arg; | |
920 | ||
921 | switch (walk_state->op_info->type) { | |
922 | #ifndef ACPI_NO_METHOD_EXECUTION | |
923 | ||
924 | case AML_TYPE_CREATE_FIELD: | |
925 | ||
926 | /* | |
927 | * Create the field object, but the field buffer and index must | |
928 | * be evaluated later during the execution phase | |
929 | */ | |
4be44fcd | 930 | status = acpi_ds_create_buffer_field(op, walk_state); |
1da177e4 LT |
931 | break; |
932 | ||
4be44fcd | 933 | case AML_TYPE_NAMED_FIELD: |
1da177e4 | 934 | |
28f55ebc BM |
935 | /* |
936 | * If we are executing a method, initialize the field | |
937 | */ | |
938 | if (walk_state->method_node) { | |
939 | status = acpi_ds_init_field_objects(op, walk_state); | |
940 | } | |
941 | ||
1da177e4 LT |
942 | switch (op->common.aml_opcode) { |
943 | case AML_INDEX_FIELD_OP: | |
944 | ||
4be44fcd LB |
945 | status = |
946 | acpi_ds_create_index_field(op, | |
947 | (acpi_handle) arg-> | |
948 | common.node, walk_state); | |
1da177e4 LT |
949 | break; |
950 | ||
951 | case AML_BANK_FIELD_OP: | |
952 | ||
4be44fcd LB |
953 | status = |
954 | acpi_ds_create_bank_field(op, arg->common.node, | |
955 | walk_state); | |
1da177e4 LT |
956 | break; |
957 | ||
958 | case AML_FIELD_OP: | |
959 | ||
4be44fcd LB |
960 | status = |
961 | acpi_ds_create_field(op, arg->common.node, | |
962 | walk_state); | |
1da177e4 LT |
963 | break; |
964 | ||
965 | default: | |
966 | /* All NAMED_FIELD opcodes must be handled above */ | |
967 | break; | |
968 | } | |
969 | break; | |
970 | ||
4be44fcd | 971 | case AML_TYPE_NAMED_SIMPLE: |
1da177e4 | 972 | |
4be44fcd LB |
973 | status = acpi_ds_create_operands(walk_state, arg); |
974 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
975 | goto cleanup; |
976 | } | |
977 | ||
978 | switch (op->common.aml_opcode) { | |
979 | case AML_PROCESSOR_OP: | |
980 | ||
4be44fcd | 981 | status = acpi_ex_create_processor(walk_state); |
1da177e4 LT |
982 | break; |
983 | ||
984 | case AML_POWER_RES_OP: | |
985 | ||
4be44fcd | 986 | status = acpi_ex_create_power_resource(walk_state); |
1da177e4 LT |
987 | break; |
988 | ||
989 | case AML_MUTEX_OP: | |
990 | ||
4be44fcd | 991 | status = acpi_ex_create_mutex(walk_state); |
1da177e4 LT |
992 | break; |
993 | ||
994 | case AML_EVENT_OP: | |
995 | ||
4be44fcd | 996 | status = acpi_ex_create_event(walk_state); |
1da177e4 LT |
997 | break; |
998 | ||
999 | case AML_DATA_REGION_OP: | |
1000 | ||
4be44fcd | 1001 | status = acpi_ex_create_table_region(walk_state); |
1da177e4 LT |
1002 | break; |
1003 | ||
1004 | case AML_ALIAS_OP: | |
1005 | ||
4be44fcd | 1006 | status = acpi_ex_create_alias(walk_state); |
1da177e4 LT |
1007 | break; |
1008 | ||
1009 | default: | |
1010 | /* Unknown opcode */ | |
1011 | ||
1012 | status = AE_OK; | |
1013 | goto cleanup; | |
1014 | } | |
1015 | ||
1016 | /* Delete operands */ | |
1017 | ||
1018 | for (i = 1; i < walk_state->num_operands; i++) { | |
4be44fcd | 1019 | acpi_ut_remove_reference(walk_state->operands[i]); |
1da177e4 LT |
1020 | walk_state->operands[i] = NULL; |
1021 | } | |
1022 | ||
1023 | break; | |
4be44fcd | 1024 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1025 | |
1026 | case AML_TYPE_NAMED_COMPLEX: | |
1027 | ||
1028 | switch (op->common.aml_opcode) { | |
1029 | #ifndef ACPI_NO_METHOD_EXECUTION | |
1030 | case AML_REGION_OP: | |
28f55ebc BM |
1031 | |
1032 | /* | |
1033 | * If we are executing a method, initialize the region | |
1034 | */ | |
1035 | if (walk_state->method_node) { | |
1036 | status = | |
1037 | acpi_ex_create_region(op->named.data, | |
1038 | op->named.length, | |
1039 | (acpi_adr_space_type) | |
1040 | ((op->common.value. | |
1041 | arg)->common.value. | |
1042 | integer), | |
1043 | walk_state); | |
1044 | if (ACPI_FAILURE(status)) { | |
1045 | return (status); | |
1046 | } | |
1047 | } | |
1048 | ||
1da177e4 | 1049 | /* |
44f6c012 RM |
1050 | * The op_region is not fully parsed at this time. Only valid |
1051 | * argument is the space_id. (We must save the address of the | |
1052 | * AML of the address and length operands) | |
1da177e4 LT |
1053 | */ |
1054 | /* | |
1055 | * If we have a valid region, initialize it | |
1056 | * Namespace is NOT locked at this point. | |
1057 | */ | |
4be44fcd LB |
1058 | status = |
1059 | acpi_ev_initialize_region | |
1060 | (acpi_ns_get_attached_object(node), FALSE); | |
1061 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1062 | /* |
1063 | * If AE_NOT_EXIST is returned, it is not fatal | |
1064 | * because many regions get created before a handler | |
1065 | * is installed for said region. | |
1066 | */ | |
1067 | if (AE_NOT_EXIST == status) { | |
1068 | status = AE_OK; | |
1069 | } | |
1070 | } | |
1071 | break; | |
1072 | ||
1da177e4 LT |
1073 | case AML_NAME_OP: |
1074 | ||
4be44fcd | 1075 | status = acpi_ds_create_node(walk_state, node, op); |
1da177e4 | 1076 | break; |
defba1d8 BM |
1077 | |
1078 | case AML_METHOD_OP: | |
1079 | /* | |
1080 | * method_op pkg_length name_string method_flags term_list | |
1081 | * | |
1082 | * Note: We must create the method node/object pair as soon as we | |
1083 | * see the method declaration. This allows later pass1 parsing | |
1084 | * of invocations of the method (need to know the number of | |
1085 | * arguments.) | |
1086 | */ | |
1087 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
b229cf92 | 1088 | "LOADING-Method: State=%p Op=%p NamedObj=%p\n", |
defba1d8 BM |
1089 | walk_state, op, op->named.node)); |
1090 | ||
1091 | if (!acpi_ns_get_attached_object(op->named.node)) { | |
1092 | walk_state->operands[0] = | |
1093 | ACPI_CAST_PTR(void, op->named.node); | |
1094 | walk_state->num_operands = 1; | |
1095 | ||
1096 | status = | |
1097 | acpi_ds_create_operands(walk_state, | |
1098 | op->common.value. | |
1099 | arg); | |
1100 | if (ACPI_SUCCESS(status)) { | |
1101 | status = | |
1102 | acpi_ex_create_method(op->named. | |
1103 | data, | |
1104 | op->named. | |
1105 | length, | |
1106 | walk_state); | |
1107 | } | |
1108 | walk_state->operands[0] = NULL; | |
1109 | walk_state->num_operands = 0; | |
1110 | ||
1111 | if (ACPI_FAILURE(status)) { | |
1112 | return_ACPI_STATUS(status); | |
1113 | } | |
1114 | } | |
1115 | break; | |
1116 | ||
4be44fcd | 1117 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1118 | |
1119 | default: | |
1120 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
1da177e4 LT |
1121 | break; |
1122 | } | |
1123 | break; | |
1124 | ||
1da177e4 LT |
1125 | case AML_CLASS_INTERNAL: |
1126 | ||
1127 | /* case AML_INT_NAMEPATH_OP: */ | |
1128 | break; | |
1129 | ||
1da177e4 LT |
1130 | case AML_CLASS_METHOD_CALL: |
1131 | ||
4be44fcd | 1132 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
b229cf92 | 1133 | "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", |
4be44fcd | 1134 | walk_state, op, node)); |
1da177e4 LT |
1135 | |
1136 | /* | |
1137 | * Lookup the method name and save the Node | |
1138 | */ | |
4be44fcd LB |
1139 | status = |
1140 | acpi_ns_lookup(walk_state->scope_info, | |
1141 | arg->common.value.string, ACPI_TYPE_ANY, | |
1142 | ACPI_IMODE_LOAD_PASS2, | |
1143 | ACPI_NS_SEARCH_PARENT | | |
1144 | ACPI_NS_DONT_OPEN_SCOPE, walk_state, | |
1145 | &(new_node)); | |
1146 | if (ACPI_SUCCESS(status)) { | |
1da177e4 LT |
1147 | /* |
1148 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
1149 | * We didn't search for a method on purpose, to see if the name |
1150 | * would resolve | |
1da177e4 LT |
1151 | */ |
1152 | if (new_node->type != ACPI_TYPE_METHOD) { | |
1153 | status = AE_AML_OPERAND_TYPE; | |
1154 | } | |
1155 | ||
44f6c012 RM |
1156 | /* We could put the returned object (Node) on the object stack for |
1157 | * later, but for now, we will put it in the "op" object that the | |
1158 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
1159 | */ |
1160 | op->common.node = new_node; | |
4be44fcd | 1161 | } else { |
b8e4d893 | 1162 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
1da177e4 LT |
1163 | } |
1164 | break; | |
1165 | ||
1da177e4 LT |
1166 | default: |
1167 | break; | |
1168 | } | |
1169 | ||
4be44fcd | 1170 | cleanup: |
1da177e4 LT |
1171 | |
1172 | /* Remove the Node pushed at the very beginning */ | |
1173 | ||
1174 | walk_state->operands[0] = NULL; | |
1175 | walk_state->num_operands = 0; | |
4be44fcd | 1176 | return_ACPI_STATUS(status); |
1da177e4 | 1177 | } |