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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswload - Dispatcher namespace load callbacks | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
6c9deb72 | 8 | * Copyright (C) 2000 - 2007, R. Byron Moore |
1da177e4 LT |
9 | * All rights reserved. |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * substantially similar to the "NO WARRANTY" disclaimer below | |
19 | * ("Disclaimer") and any redistribution must be conditioned upon | |
20 | * including a substantially similar Disclaimer requirement for further | |
21 | * binary redistribution. | |
22 | * 3. Neither the names of the above-listed copyright holders nor the names | |
23 | * of any contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * Alternatively, this software may be distributed under the terms of the | |
27 | * GNU General Public License ("GPL") version 2 as published by the Free | |
28 | * Software Foundation. | |
29 | * | |
30 | * NO WARRANTY | |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
41 | * POSSIBILITY OF SUCH DAMAGES. | |
42 | */ | |
43 | ||
1da177e4 LT |
44 | #include <acpi/acpi.h> |
45 | #include <acpi/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: | |
967440e3 | 178 | * Target of Scope() not found. Generate an External for it, and |
1da177e4 LT |
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) { | |
15f0c0d1 | 199 | case ACPI_TYPE_ANY: |
4be44fcd | 200 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
201 | case ACPI_TYPE_DEVICE: |
202 | case ACPI_TYPE_POWER: | |
203 | case ACPI_TYPE_PROCESSOR: | |
204 | case ACPI_TYPE_THERMAL: | |
205 | ||
206 | /* These are acceptable types */ | |
207 | break; | |
208 | ||
209 | case ACPI_TYPE_INTEGER: | |
210 | case ACPI_TYPE_STRING: | |
211 | case ACPI_TYPE_BUFFER: | |
212 | ||
213 | /* | |
967440e3 | 214 | * These types we will allow, but we will change the type. This |
1da177e4 LT |
215 | * enables some existing code of the form: |
216 | * | |
217 | * Name (DEB, 0) | |
218 | * Scope (DEB) { ... } | |
219 | * | |
967440e3 | 220 | * Note: silently change the type here. On the second pass, we will report |
44f6c012 | 221 | * a warning |
1da177e4 | 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 | 244 | default: |
1da177e4 | 245 | /* |
44f6c012 RM |
246 | * For all other named opcodes, we will enter the name into |
247 | * the namespace. | |
1da177e4 LT |
248 | * |
249 | * Setup the search flags. | |
250 | * Since we are entering a name into the namespace, we do not want to | |
251 | * enable the search-to-root upsearch. | |
252 | * | |
253 | * There are only two conditions where it is acceptable that the name | |
254 | * already exists: | |
255 | * 1) the Scope() operator can reopen a scoping object that was | |
256 | * previously defined (Scope, Method, Device, etc.) | |
257 | * 2) Whenever we are parsing a deferred opcode (op_region, Buffer, | |
258 | * buffer_field, or Package), the name of the object is already | |
259 | * in the namespace. | |
260 | */ | |
261 | if (walk_state->deferred_node) { | |
52fc0b02 | 262 | |
1da177e4 LT |
263 | /* This name is already in the namespace, get the node */ |
264 | ||
265 | node = walk_state->deferred_node; | |
266 | status = AE_OK; | |
267 | break; | |
268 | } | |
269 | ||
28f55ebc BM |
270 | /* |
271 | * If we are executing a method, do not create any namespace objects | |
272 | * during the load phase, only during execution. | |
273 | */ | |
274 | if (walk_state->method_node) { | |
275 | node = NULL; | |
276 | status = AE_OK; | |
277 | break; | |
278 | } | |
279 | ||
1da177e4 LT |
280 | flags = ACPI_NS_NO_UPSEARCH; |
281 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
4be44fcd | 282 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { |
1da177e4 | 283 | flags |= ACPI_NS_ERROR_IF_FOUND; |
4be44fcd LB |
284 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
285 | "[%s] Cannot already exist\n", | |
286 | acpi_ut_get_type_name(object_type))); | |
287 | } else { | |
288 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
289 | "[%s] Both Find or Create allowed\n", | |
290 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
291 | } |
292 | ||
293 | /* | |
967440e3 BM |
294 | * Enter the named type into the internal namespace. We enter the name |
295 | * as we go downward in the parse tree. Any necessary subobjects that | |
44f6c012 RM |
296 | * involve arguments to the opcode must be created as we go back up the |
297 | * parse tree later. | |
1da177e4 | 298 | */ |
4be44fcd LB |
299 | status = |
300 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
301 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, | |
958dd242 | 302 | &node); |
4be44fcd | 303 | if (ACPI_FAILURE(status)) { |
958dd242 BM |
304 | if (status == AE_ALREADY_EXISTS) { |
305 | ||
306 | /* The name already exists in this scope */ | |
307 | ||
308 | if (node->flags & ANOBJ_IS_EXTERNAL) { | |
309 | /* | |
310 | * Allow one create on an object or segment that was | |
311 | * previously declared External | |
312 | */ | |
313 | node->flags &= ~ANOBJ_IS_EXTERNAL; | |
314 | node->type = (u8) object_type; | |
315 | ||
316 | /* Just retyped a node, probably will need to open a scope */ | |
317 | ||
318 | if (acpi_ns_opens_scope(object_type)) { | |
319 | status = | |
320 | acpi_ds_scope_stack_push | |
321 | (node, object_type, | |
322 | walk_state); | |
323 | if (ACPI_FAILURE(status)) { | |
324 | return_ACPI_STATUS | |
325 | (status); | |
326 | } | |
327 | } | |
967440e3 | 328 | |
958dd242 BM |
329 | status = AE_OK; |
330 | } | |
331 | } | |
332 | ||
333 | if (ACPI_FAILURE(status)) { | |
958dd242 BM |
334 | ACPI_ERROR_NAMESPACE(path, status); |
335 | return_ACPI_STATUS(status); | |
336 | } | |
1da177e4 LT |
337 | } |
338 | break; | |
339 | } | |
340 | ||
1da177e4 LT |
341 | /* Common exit */ |
342 | ||
343 | if (!op) { | |
52fc0b02 | 344 | |
1da177e4 LT |
345 | /* Create a new op */ |
346 | ||
4be44fcd | 347 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 348 | if (!op) { |
28f55ebc | 349 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
350 | } |
351 | } | |
352 | ||
28f55ebc | 353 | /* Initialize the op */ |
1da177e4 LT |
354 | |
355 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
c51a4de8 | 356 | op->named.path = ACPI_CAST_PTR(u8, path); |
1da177e4 LT |
357 | #endif |
358 | ||
28f55ebc BM |
359 | if (node) { |
360 | /* | |
361 | * Put the Node in the "op" object that the parser uses, so we | |
362 | * can get it again quickly when this scope is closed | |
363 | */ | |
364 | op->common.node = node; | |
365 | op->named.name = node->name.integer; | |
366 | } | |
367 | ||
4be44fcd LB |
368 | acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
369 | op); | |
1da177e4 | 370 | *out_op = op; |
28f55ebc | 371 | return_ACPI_STATUS(status); |
1da177e4 LT |
372 | } |
373 | ||
1da177e4 LT |
374 | /******************************************************************************* |
375 | * | |
376 | * FUNCTION: acpi_ds_load1_end_op | |
377 | * | |
378 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
379 | * |
380 | * RETURN: Status | |
381 | * | |
382 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
383 | * both control methods and everything else. | |
384 | * | |
385 | ******************************************************************************/ | |
386 | ||
28f55ebc | 387 | acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 388 | { |
4be44fcd LB |
389 | union acpi_parse_object *op; |
390 | acpi_object_type object_type; | |
391 | acpi_status status = AE_OK; | |
1da177e4 | 392 | |
b229cf92 | 393 | ACPI_FUNCTION_TRACE(ds_load1_end_op); |
1da177e4 LT |
394 | |
395 | op = walk_state->op; | |
4be44fcd LB |
396 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
397 | walk_state)); | |
1da177e4 LT |
398 | |
399 | /* We are only interested in opcodes that have an associated name */ | |
400 | ||
401 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
28f55ebc | 402 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
403 | } |
404 | ||
405 | /* Get the object type to determine if we should pop the scope */ | |
406 | ||
407 | object_type = walk_state->op_info->object_type; | |
408 | ||
409 | #ifndef ACPI_NO_METHOD_EXECUTION | |
410 | if (walk_state->op_info->flags & AML_FIELD) { | |
28f55ebc BM |
411 | /* |
412 | * If we are executing a method, do not create any namespace objects | |
413 | * during the load phase, only during execution. | |
414 | */ | |
415 | if (!walk_state->method_node) { | |
416 | if (walk_state->opcode == AML_FIELD_OP || | |
417 | walk_state->opcode == AML_BANK_FIELD_OP || | |
418 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
419 | status = | |
420 | acpi_ds_init_field_objects(op, walk_state); | |
421 | } | |
1da177e4 | 422 | } |
28f55ebc | 423 | return_ACPI_STATUS(status); |
1da177e4 LT |
424 | } |
425 | ||
28f55ebc BM |
426 | /* |
427 | * If we are executing a method, do not create any namespace objects | |
428 | * during the load phase, only during execution. | |
429 | */ | |
430 | if (!walk_state->method_node) { | |
431 | if (op->common.aml_opcode == AML_REGION_OP) { | |
432 | status = | |
433 | acpi_ex_create_region(op->named.data, | |
434 | op->named.length, | |
967440e3 BM |
435 | (acpi_adr_space_type) ((op-> |
436 | common. | |
437 | value. | |
438 | arg)-> | |
439 | common. | |
440 | value. | |
441 | integer), | |
28f55ebc BM |
442 | walk_state); |
443 | if (ACPI_FAILURE(status)) { | |
444 | return_ACPI_STATUS(status); | |
445 | } | |
1da177e4 LT |
446 | } |
447 | } | |
448 | #endif | |
449 | ||
450 | if (op->common.aml_opcode == AML_NAME_OP) { | |
52fc0b02 | 451 | |
1da177e4 LT |
452 | /* For Name opcode, get the object type from the argument */ |
453 | ||
454 | if (op->common.value.arg) { | |
4be44fcd LB |
455 | object_type = (acpi_ps_get_opcode_info((op->common. |
456 | value.arg)-> | |
457 | common. | |
458 | aml_opcode))-> | |
459 | object_type; | |
28f55ebc BM |
460 | |
461 | /* Set node type if we have a namespace node */ | |
462 | ||
463 | if (op->common.node) { | |
464 | op->common.node->type = (u8) object_type; | |
465 | } | |
1da177e4 LT |
466 | } |
467 | } | |
468 | ||
defba1d8 BM |
469 | /* |
470 | * If we are executing a method, do not create any namespace objects | |
471 | * during the load phase, only during execution. | |
472 | */ | |
473 | if (!walk_state->method_node) { | |
474 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
475 | /* | |
476 | * method_op pkg_length name_string method_flags term_list | |
477 | * | |
478 | * Note: We must create the method node/object pair as soon as we | |
967440e3 | 479 | * see the method declaration. This allows later pass1 parsing |
defba1d8 BM |
480 | * of invocations of the method (need to know the number of |
481 | * arguments.) | |
482 | */ | |
483 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
b229cf92 | 484 | "LOADING-Method: State=%p Op=%p NamedObj=%p\n", |
defba1d8 | 485 | walk_state, op, op->named.node)); |
1da177e4 | 486 | |
defba1d8 BM |
487 | if (!acpi_ns_get_attached_object(op->named.node)) { |
488 | walk_state->operands[0] = | |
489 | ACPI_CAST_PTR(void, op->named.node); | |
490 | walk_state->num_operands = 1; | |
1da177e4 | 491 | |
defba1d8 BM |
492 | status = |
493 | acpi_ds_create_operands(walk_state, | |
494 | op->common.value. | |
495 | arg); | |
496 | if (ACPI_SUCCESS(status)) { | |
497 | status = | |
498 | acpi_ex_create_method(op->named. | |
499 | data, | |
500 | op->named. | |
501 | length, | |
502 | walk_state); | |
503 | } | |
967440e3 | 504 | |
defba1d8 BM |
505 | walk_state->operands[0] = NULL; |
506 | walk_state->num_operands = 0; | |
1da177e4 | 507 | |
defba1d8 BM |
508 | if (ACPI_FAILURE(status)) { |
509 | return_ACPI_STATUS(status); | |
510 | } | |
1da177e4 LT |
511 | } |
512 | } | |
513 | } | |
514 | ||
defba1d8 | 515 | /* Pop the scope stack (only if loading a table) */ |
1da177e4 | 516 | |
defba1d8 | 517 | if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { |
4be44fcd LB |
518 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
519 | "(%s): Popping scope for Op %p\n", | |
520 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 521 | |
4be44fcd | 522 | status = acpi_ds_scope_stack_pop(walk_state); |
1da177e4 LT |
523 | } |
524 | ||
28f55ebc | 525 | return_ACPI_STATUS(status); |
1da177e4 LT |
526 | } |
527 | ||
1da177e4 LT |
528 | /******************************************************************************* |
529 | * | |
530 | * FUNCTION: acpi_ds_load2_begin_op | |
531 | * | |
532 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 533 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
534 | * |
535 | * RETURN: Status | |
536 | * | |
537 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
538 | * | |
539 | ******************************************************************************/ | |
540 | ||
541 | acpi_status | |
28f55ebc BM |
542 | acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, |
543 | union acpi_parse_object **out_op) | |
1da177e4 | 544 | { |
4be44fcd LB |
545 | union acpi_parse_object *op; |
546 | struct acpi_namespace_node *node; | |
547 | acpi_status status; | |
548 | acpi_object_type object_type; | |
549 | char *buffer_ptr; | |
13b572a3 | 550 | u32 flags; |
1da177e4 | 551 | |
b229cf92 | 552 | ACPI_FUNCTION_TRACE(ds_load2_begin_op); |
1da177e4 LT |
553 | |
554 | op = walk_state->op; | |
4be44fcd LB |
555 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
556 | walk_state)); | |
1da177e4 LT |
557 | |
558 | if (op) { | |
88ac00f5 | 559 | if ((walk_state->control_state) && |
4be44fcd LB |
560 | (walk_state->control_state->common.state == |
561 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
52fc0b02 | 562 | |
88ac00f5 RM |
563 | /* We are executing a while loop outside of a method */ |
564 | ||
4be44fcd LB |
565 | status = acpi_ds_exec_begin_op(walk_state, out_op); |
566 | return_ACPI_STATUS(status); | |
88ac00f5 RM |
567 | } |
568 | ||
1da177e4 LT |
569 | /* We only care about Namespace opcodes here */ |
570 | ||
44f6c012 | 571 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && |
4be44fcd LB |
572 | (walk_state->opcode != AML_INT_NAMEPATH_OP)) || |
573 | (!(walk_state->op_info->flags & AML_NAMED))) { | |
aff8c277 | 574 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
44f6c012 | 575 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || |
4be44fcd LB |
576 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
577 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
578 | "Begin/EXEC: %s (fl %8.8X)\n", | |
579 | walk_state->op_info->name, | |
580 | walk_state->op_info->flags)); | |
88ac00f5 RM |
581 | |
582 | /* Executing a type1 or type2 opcode outside of a method */ | |
583 | ||
4be44fcd LB |
584 | status = |
585 | acpi_ds_exec_begin_op(walk_state, out_op); | |
586 | return_ACPI_STATUS(status); | |
44f6c012 | 587 | } |
aff8c277 | 588 | #endif |
4be44fcd | 589 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
590 | } |
591 | ||
44f6c012 RM |
592 | /* Get the name we are going to enter or lookup in the namespace */ |
593 | ||
1da177e4 | 594 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
52fc0b02 | 595 | |
1da177e4 LT |
596 | /* For Namepath op, get the path string */ |
597 | ||
598 | buffer_ptr = op->common.value.string; | |
599 | if (!buffer_ptr) { | |
52fc0b02 | 600 | |
1da177e4 LT |
601 | /* No name, just exit */ |
602 | ||
4be44fcd | 603 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 604 | } |
4be44fcd | 605 | } else { |
1da177e4 LT |
606 | /* Get name from the op */ |
607 | ||
967440e3 | 608 | buffer_ptr = ACPI_CAST_PTR(char, &op->named.name); |
1da177e4 | 609 | } |
4be44fcd | 610 | } else { |
1da177e4 LT |
611 | /* Get the namestring from the raw AML */ |
612 | ||
4be44fcd LB |
613 | buffer_ptr = |
614 | acpi_ps_get_next_namestring(&walk_state->parser_state); | |
1da177e4 LT |
615 | } |
616 | ||
617 | /* Map the opcode into an internal object type */ | |
618 | ||
619 | object_type = walk_state->op_info->object_type; | |
620 | ||
4be44fcd LB |
621 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
622 | "State=%p Op=%p Type=%X\n", walk_state, op, | |
623 | object_type)); | |
1da177e4 LT |
624 | |
625 | switch (walk_state->opcode) { | |
626 | case AML_FIELD_OP: | |
627 | case AML_BANK_FIELD_OP: | |
628 | case AML_INDEX_FIELD_OP: | |
629 | ||
630 | node = NULL; | |
631 | status = AE_OK; | |
632 | break; | |
633 | ||
634 | case AML_INT_NAMEPATH_OP: | |
1da177e4 | 635 | /* |
44f6c012 RM |
636 | * The name_path is an object reference to an existing object. |
637 | * Don't enter the name into the namespace, but look it up | |
638 | * for use later. | |
1da177e4 | 639 | */ |
4be44fcd LB |
640 | status = |
641 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
642 | object_type, ACPI_IMODE_EXECUTE, | |
643 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
1da177e4 LT |
644 | break; |
645 | ||
646 | case AML_SCOPE_OP: | |
1da177e4 | 647 | /* |
44f6c012 RM |
648 | * The Path is an object reference to an existing object. |
649 | * Don't enter the name into the namespace, but look it up | |
650 | * for use later. | |
1da177e4 | 651 | */ |
4be44fcd LB |
652 | status = |
653 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
654 | object_type, ACPI_IMODE_EXECUTE, | |
655 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
656 | if (ACPI_FAILURE(status)) { | |
73459f73 | 657 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
658 | if (status == AE_NOT_FOUND) { |
659 | status = AE_OK; | |
4be44fcd | 660 | } else { |
b8e4d893 | 661 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 LT |
662 | } |
663 | #else | |
b8e4d893 | 664 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 | 665 | #endif |
4be44fcd | 666 | return_ACPI_STATUS(status); |
1da177e4 | 667 | } |
967440e3 | 668 | |
1da177e4 LT |
669 | /* |
670 | * We must check to make sure that the target is | |
671 | * one of the opcodes that actually opens a scope | |
672 | */ | |
673 | switch (node->type) { | |
15f0c0d1 | 674 | case ACPI_TYPE_ANY: |
4be44fcd | 675 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
676 | case ACPI_TYPE_DEVICE: |
677 | case ACPI_TYPE_POWER: | |
678 | case ACPI_TYPE_PROCESSOR: | |
679 | case ACPI_TYPE_THERMAL: | |
680 | ||
681 | /* These are acceptable types */ | |
682 | break; | |
683 | ||
684 | case ACPI_TYPE_INTEGER: | |
685 | case ACPI_TYPE_STRING: | |
686 | case ACPI_TYPE_BUFFER: | |
687 | ||
688 | /* | |
967440e3 | 689 | * These types we will allow, but we will change the type. This |
1da177e4 LT |
690 | * enables some existing code of the form: |
691 | * | |
692 | * Name (DEB, 0) | |
693 | * Scope (DEB) { ... } | |
694 | */ | |
b8e4d893 BM |
695 | ACPI_WARNING((AE_INFO, |
696 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)", | |
697 | buffer_ptr, | |
698 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
699 | |
700 | node->type = ACPI_TYPE_ANY; | |
701 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
702 | break; | |
703 | ||
704 | default: | |
705 | ||
706 | /* All other types are an error */ | |
707 | ||
b8e4d893 BM |
708 | ACPI_ERROR((AE_INFO, |
709 | "Invalid type (%s) for target of Scope operator [%4.4s]", | |
710 | acpi_ut_get_type_name(node->type), | |
711 | buffer_ptr)); | |
1da177e4 LT |
712 | |
713 | return (AE_AML_OPERAND_TYPE); | |
714 | } | |
715 | break; | |
716 | ||
717 | default: | |
718 | ||
719 | /* All other opcodes */ | |
720 | ||
721 | if (op && op->common.node) { | |
52fc0b02 | 722 | |
1da177e4 LT |
723 | /* This op/node was previously entered into the namespace */ |
724 | ||
725 | node = op->common.node; | |
726 | ||
4be44fcd LB |
727 | if (acpi_ns_opens_scope(object_type)) { |
728 | status = | |
729 | acpi_ds_scope_stack_push(node, object_type, | |
730 | walk_state); | |
731 | if (ACPI_FAILURE(status)) { | |
732 | return_ACPI_STATUS(status); | |
1da177e4 | 733 | } |
1da177e4 | 734 | } |
967440e3 | 735 | |
4be44fcd | 736 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
737 | } |
738 | ||
739 | /* | |
967440e3 BM |
740 | * Enter the named type into the internal namespace. We enter the name |
741 | * as we go downward in the parse tree. Any necessary subobjects that | |
44f6c012 RM |
742 | * involve arguments to the opcode must be created as we go back up the |
743 | * parse tree later. | |
1da177e4 LT |
744 | * |
745 | * Note: Name may already exist if we are executing a deferred opcode. | |
746 | */ | |
747 | if (walk_state->deferred_node) { | |
52fc0b02 | 748 | |
1da177e4 LT |
749 | /* This name is already in the namespace, get the node */ |
750 | ||
751 | node = walk_state->deferred_node; | |
752 | status = AE_OK; | |
753 | break; | |
754 | } | |
755 | ||
13b572a3 | 756 | flags = ACPI_NS_NO_UPSEARCH; |
ec3153fb | 757 | if (walk_state->pass_number == ACPI_IMODE_EXECUTE) { |
13b572a3 | 758 | |
d1fdda83 | 759 | /* Execution mode, node cannot already exist, node is temporary */ |
13b572a3 | 760 | |
d1fdda83 | 761 | flags |= (ACPI_NS_ERROR_IF_FOUND | ACPI_NS_TEMPORARY); |
13b572a3 BM |
762 | } |
763 | ||
764 | /* Add new entry or lookup existing entry */ | |
88ac00f5 | 765 | |
4be44fcd LB |
766 | status = |
767 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
13b572a3 BM |
768 | object_type, ACPI_IMODE_LOAD_PASS2, flags, |
769 | walk_state, &node); | |
1da177e4 LT |
770 | break; |
771 | } | |
772 | ||
4be44fcd | 773 | if (ACPI_FAILURE(status)) { |
b8e4d893 | 774 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
4be44fcd | 775 | return_ACPI_STATUS(status); |
1da177e4 LT |
776 | } |
777 | ||
1da177e4 | 778 | if (!op) { |
52fc0b02 | 779 | |
1da177e4 LT |
780 | /* Create a new op */ |
781 | ||
4be44fcd | 782 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 783 | if (!op) { |
4be44fcd | 784 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
785 | } |
786 | ||
787 | /* Initialize the new op */ | |
788 | ||
789 | if (node) { | |
790 | op->named.name = node->name.integer; | |
791 | } | |
88ac00f5 | 792 | *out_op = op; |
1da177e4 LT |
793 | } |
794 | ||
795 | /* | |
796 | * Put the Node in the "op" object that the parser uses, so we | |
797 | * can get it again quickly when this scope is closed | |
798 | */ | |
799 | op->common.node = node; | |
4be44fcd | 800 | return_ACPI_STATUS(status); |
1da177e4 LT |
801 | } |
802 | ||
1da177e4 LT |
803 | /******************************************************************************* |
804 | * | |
805 | * FUNCTION: acpi_ds_load2_end_op | |
806 | * | |
807 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
808 | * |
809 | * RETURN: Status | |
810 | * | |
811 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
812 | * both control methods and everything else. | |
813 | * | |
814 | ******************************************************************************/ | |
815 | ||
4be44fcd | 816 | acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 817 | { |
4be44fcd LB |
818 | union acpi_parse_object *op; |
819 | acpi_status status = AE_OK; | |
820 | acpi_object_type object_type; | |
821 | struct acpi_namespace_node *node; | |
822 | union acpi_parse_object *arg; | |
823 | struct acpi_namespace_node *new_node; | |
1da177e4 | 824 | #ifndef ACPI_NO_METHOD_EXECUTION |
4be44fcd | 825 | u32 i; |
1da177e4 LT |
826 | #endif |
827 | ||
b229cf92 | 828 | ACPI_FUNCTION_TRACE(ds_load2_end_op); |
1da177e4 LT |
829 | |
830 | op = walk_state->op; | |
4be44fcd LB |
831 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", |
832 | walk_state->op_info->name, op, walk_state)); | |
1da177e4 | 833 | |
88ac00f5 | 834 | /* Check if opcode had an associated namespace object */ |
1da177e4 LT |
835 | |
836 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
88ac00f5 | 837 | #ifndef ACPI_NO_METHOD_EXECUTION |
aff8c277 | 838 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
88ac00f5 RM |
839 | /* No namespace object. Executable opcode? */ |
840 | ||
841 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
4be44fcd LB |
842 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
843 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
844 | "End/EXEC: %s (fl %8.8X)\n", | |
845 | walk_state->op_info->name, | |
846 | walk_state->op_info->flags)); | |
88ac00f5 RM |
847 | |
848 | /* Executing a type1 or type2 opcode outside of a method */ | |
849 | ||
4be44fcd LB |
850 | status = acpi_ds_exec_end_op(walk_state); |
851 | return_ACPI_STATUS(status); | |
88ac00f5 | 852 | } |
aff8c277 | 853 | #endif |
88ac00f5 | 854 | #endif |
4be44fcd | 855 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
856 | } |
857 | ||
858 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
4be44fcd LB |
859 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
860 | "Ending scope Op=%p State=%p\n", op, | |
861 | walk_state)); | |
1da177e4 LT |
862 | } |
863 | ||
1da177e4 LT |
864 | object_type = walk_state->op_info->object_type; |
865 | ||
866 | /* | |
867 | * Get the Node/name from the earlier lookup | |
868 | * (It was saved in the *op structure) | |
869 | */ | |
870 | node = op->common.node; | |
871 | ||
872 | /* | |
873 | * Put the Node on the object stack (Contains the ACPI Name of | |
874 | * this object) | |
875 | */ | |
4be44fcd | 876 | walk_state->operands[0] = (void *)node; |
1da177e4 LT |
877 | walk_state->num_operands = 1; |
878 | ||
879 | /* Pop the scope stack */ | |
880 | ||
4be44fcd LB |
881 | if (acpi_ns_opens_scope(object_type) && |
882 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
883 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
884 | "(%s) Popping scope for Op %p\n", | |
885 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 886 | |
4be44fcd LB |
887 | status = acpi_ds_scope_stack_pop(walk_state); |
888 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
889 | goto cleanup; |
890 | } | |
891 | } | |
892 | ||
893 | /* | |
894 | * Named operations are as follows: | |
895 | * | |
896 | * AML_ALIAS | |
897 | * AML_BANKFIELD | |
898 | * AML_CREATEBITFIELD | |
899 | * AML_CREATEBYTEFIELD | |
900 | * AML_CREATEDWORDFIELD | |
901 | * AML_CREATEFIELD | |
902 | * AML_CREATEQWORDFIELD | |
903 | * AML_CREATEWORDFIELD | |
904 | * AML_DATA_REGION | |
905 | * AML_DEVICE | |
906 | * AML_EVENT | |
907 | * AML_FIELD | |
908 | * AML_INDEXFIELD | |
909 | * AML_METHOD | |
910 | * AML_METHODCALL | |
911 | * AML_MUTEX | |
912 | * AML_NAME | |
913 | * AML_NAMEDFIELD | |
914 | * AML_OPREGION | |
915 | * AML_POWERRES | |
916 | * AML_PROCESSOR | |
917 | * AML_SCOPE | |
918 | * AML_THERMALZONE | |
919 | */ | |
920 | ||
4be44fcd | 921 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
b229cf92 | 922 | "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", |
4be44fcd LB |
923 | acpi_ps_get_opcode_name(op->common.aml_opcode), |
924 | walk_state, op, node)); | |
1da177e4 LT |
925 | |
926 | /* Decode the opcode */ | |
927 | ||
928 | arg = op->common.value.arg; | |
929 | ||
930 | switch (walk_state->op_info->type) { | |
931 | #ifndef ACPI_NO_METHOD_EXECUTION | |
932 | ||
933 | case AML_TYPE_CREATE_FIELD: | |
1da177e4 LT |
934 | /* |
935 | * Create the field object, but the field buffer and index must | |
936 | * be evaluated later during the execution phase | |
937 | */ | |
4be44fcd | 938 | status = acpi_ds_create_buffer_field(op, walk_state); |
1da177e4 LT |
939 | break; |
940 | ||
4be44fcd | 941 | case AML_TYPE_NAMED_FIELD: |
28f55ebc BM |
942 | /* |
943 | * If we are executing a method, initialize the field | |
944 | */ | |
945 | if (walk_state->method_node) { | |
946 | status = acpi_ds_init_field_objects(op, walk_state); | |
947 | } | |
948 | ||
1da177e4 LT |
949 | switch (op->common.aml_opcode) { |
950 | case AML_INDEX_FIELD_OP: | |
951 | ||
4be44fcd LB |
952 | status = |
953 | acpi_ds_create_index_field(op, | |
954 | (acpi_handle) arg-> | |
955 | common.node, walk_state); | |
1da177e4 LT |
956 | break; |
957 | ||
958 | case AML_BANK_FIELD_OP: | |
959 | ||
4be44fcd LB |
960 | status = |
961 | acpi_ds_create_bank_field(op, arg->common.node, | |
962 | walk_state); | |
1da177e4 LT |
963 | break; |
964 | ||
965 | case AML_FIELD_OP: | |
966 | ||
4be44fcd LB |
967 | status = |
968 | acpi_ds_create_field(op, arg->common.node, | |
969 | walk_state); | |
1da177e4 LT |
970 | break; |
971 | ||
972 | default: | |
973 | /* All NAMED_FIELD opcodes must be handled above */ | |
974 | break; | |
975 | } | |
976 | break; | |
977 | ||
4be44fcd | 978 | case AML_TYPE_NAMED_SIMPLE: |
1da177e4 | 979 | |
4be44fcd LB |
980 | status = acpi_ds_create_operands(walk_state, arg); |
981 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
982 | goto cleanup; |
983 | } | |
984 | ||
985 | switch (op->common.aml_opcode) { | |
986 | case AML_PROCESSOR_OP: | |
987 | ||
4be44fcd | 988 | status = acpi_ex_create_processor(walk_state); |
1da177e4 LT |
989 | break; |
990 | ||
991 | case AML_POWER_RES_OP: | |
992 | ||
4be44fcd | 993 | status = acpi_ex_create_power_resource(walk_state); |
1da177e4 LT |
994 | break; |
995 | ||
996 | case AML_MUTEX_OP: | |
997 | ||
4be44fcd | 998 | status = acpi_ex_create_mutex(walk_state); |
1da177e4 LT |
999 | break; |
1000 | ||
1001 | case AML_EVENT_OP: | |
1002 | ||
4be44fcd | 1003 | status = acpi_ex_create_event(walk_state); |
1da177e4 LT |
1004 | break; |
1005 | ||
1006 | case AML_DATA_REGION_OP: | |
1007 | ||
4be44fcd | 1008 | status = acpi_ex_create_table_region(walk_state); |
1da177e4 LT |
1009 | break; |
1010 | ||
1011 | case AML_ALIAS_OP: | |
1012 | ||
4be44fcd | 1013 | status = acpi_ex_create_alias(walk_state); |
1da177e4 LT |
1014 | break; |
1015 | ||
1016 | default: | |
1017 | /* Unknown opcode */ | |
1018 | ||
1019 | status = AE_OK; | |
1020 | goto cleanup; | |
1021 | } | |
1022 | ||
1023 | /* Delete operands */ | |
1024 | ||
1025 | for (i = 1; i < walk_state->num_operands; i++) { | |
4be44fcd | 1026 | acpi_ut_remove_reference(walk_state->operands[i]); |
1da177e4 LT |
1027 | walk_state->operands[i] = NULL; |
1028 | } | |
1029 | ||
1030 | break; | |
4be44fcd | 1031 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1032 | |
1033 | case AML_TYPE_NAMED_COMPLEX: | |
1034 | ||
1035 | switch (op->common.aml_opcode) { | |
1036 | #ifndef ACPI_NO_METHOD_EXECUTION | |
1037 | case AML_REGION_OP: | |
28f55ebc BM |
1038 | |
1039 | /* | |
1040 | * If we are executing a method, initialize the region | |
1041 | */ | |
1042 | if (walk_state->method_node) { | |
1043 | status = | |
1044 | acpi_ex_create_region(op->named.data, | |
1045 | op->named.length, | |
1046 | (acpi_adr_space_type) | |
1047 | ((op->common.value. | |
1048 | arg)->common.value. | |
1049 | integer), | |
1050 | walk_state); | |
1051 | if (ACPI_FAILURE(status)) { | |
1052 | return (status); | |
1053 | } | |
1054 | } | |
1055 | ||
1da177e4 | 1056 | /* |
44f6c012 RM |
1057 | * The op_region is not fully parsed at this time. Only valid |
1058 | * argument is the space_id. (We must save the address of the | |
1059 | * AML of the address and length operands) | |
1da177e4 | 1060 | */ |
967440e3 | 1061 | |
1da177e4 LT |
1062 | /* |
1063 | * If we have a valid region, initialize it | |
1064 | * Namespace is NOT locked at this point. | |
1065 | */ | |
4be44fcd LB |
1066 | status = |
1067 | acpi_ev_initialize_region | |
1068 | (acpi_ns_get_attached_object(node), FALSE); | |
1069 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1070 | /* |
1071 | * If AE_NOT_EXIST is returned, it is not fatal | |
1072 | * because many regions get created before a handler | |
1073 | * is installed for said region. | |
1074 | */ | |
1075 | if (AE_NOT_EXIST == status) { | |
1076 | status = AE_OK; | |
1077 | } | |
1078 | } | |
1079 | break; | |
1080 | ||
1da177e4 LT |
1081 | case AML_NAME_OP: |
1082 | ||
4be44fcd | 1083 | status = acpi_ds_create_node(walk_state, node, op); |
1da177e4 | 1084 | break; |
defba1d8 BM |
1085 | |
1086 | case AML_METHOD_OP: | |
1087 | /* | |
1088 | * method_op pkg_length name_string method_flags term_list | |
1089 | * | |
1090 | * Note: We must create the method node/object pair as soon as we | |
967440e3 | 1091 | * see the method declaration. This allows later pass1 parsing |
defba1d8 BM |
1092 | * of invocations of the method (need to know the number of |
1093 | * arguments.) | |
1094 | */ | |
1095 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
b229cf92 | 1096 | "LOADING-Method: State=%p Op=%p NamedObj=%p\n", |
defba1d8 BM |
1097 | walk_state, op, op->named.node)); |
1098 | ||
1099 | if (!acpi_ns_get_attached_object(op->named.node)) { | |
1100 | walk_state->operands[0] = | |
1101 | ACPI_CAST_PTR(void, op->named.node); | |
1102 | walk_state->num_operands = 1; | |
1103 | ||
1104 | status = | |
1105 | acpi_ds_create_operands(walk_state, | |
1106 | op->common.value. | |
1107 | arg); | |
1108 | if (ACPI_SUCCESS(status)) { | |
1109 | status = | |
1110 | acpi_ex_create_method(op->named. | |
1111 | data, | |
1112 | op->named. | |
1113 | length, | |
1114 | walk_state); | |
1115 | } | |
1116 | walk_state->operands[0] = NULL; | |
1117 | walk_state->num_operands = 0; | |
1118 | ||
1119 | if (ACPI_FAILURE(status)) { | |
1120 | return_ACPI_STATUS(status); | |
1121 | } | |
1122 | } | |
1123 | break; | |
1124 | ||
4be44fcd | 1125 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1126 | |
1127 | default: | |
1128 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
1da177e4 LT |
1129 | break; |
1130 | } | |
1131 | break; | |
1132 | ||
1da177e4 LT |
1133 | case AML_CLASS_INTERNAL: |
1134 | ||
1135 | /* case AML_INT_NAMEPATH_OP: */ | |
1136 | break; | |
1137 | ||
1da177e4 LT |
1138 | case AML_CLASS_METHOD_CALL: |
1139 | ||
4be44fcd | 1140 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
b229cf92 | 1141 | "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", |
4be44fcd | 1142 | walk_state, op, node)); |
1da177e4 LT |
1143 | |
1144 | /* | |
1145 | * Lookup the method name and save the Node | |
1146 | */ | |
4be44fcd LB |
1147 | status = |
1148 | acpi_ns_lookup(walk_state->scope_info, | |
1149 | arg->common.value.string, ACPI_TYPE_ANY, | |
1150 | ACPI_IMODE_LOAD_PASS2, | |
1151 | ACPI_NS_SEARCH_PARENT | | |
1152 | ACPI_NS_DONT_OPEN_SCOPE, walk_state, | |
1153 | &(new_node)); | |
1154 | if (ACPI_SUCCESS(status)) { | |
1da177e4 LT |
1155 | /* |
1156 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
1157 | * We didn't search for a method on purpose, to see if the name |
1158 | * would resolve | |
1da177e4 LT |
1159 | */ |
1160 | if (new_node->type != ACPI_TYPE_METHOD) { | |
1161 | status = AE_AML_OPERAND_TYPE; | |
1162 | } | |
1163 | ||
44f6c012 RM |
1164 | /* We could put the returned object (Node) on the object stack for |
1165 | * later, but for now, we will put it in the "op" object that the | |
1166 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
1167 | */ |
1168 | op->common.node = new_node; | |
4be44fcd | 1169 | } else { |
b8e4d893 | 1170 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
1da177e4 LT |
1171 | } |
1172 | break; | |
1173 | ||
1da177e4 LT |
1174 | default: |
1175 | break; | |
1176 | } | |
1177 | ||
4be44fcd | 1178 | cleanup: |
1da177e4 LT |
1179 | |
1180 | /* Remove the Node pushed at the very beginning */ | |
1181 | ||
1182 | walk_state->operands[0] = NULL; | |
1183 | walk_state->num_operands = 0; | |
4be44fcd | 1184 | return_ACPI_STATUS(status); |
1da177e4 | 1185 | } |