Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dswload - Dispatcher namespace load callbacks | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
75a44ce0 | 8 | * Copyright (C) 2000 - 2008, Intel Corp. |
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 | 44 | #include <acpi/acpi.h> |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acparser.h" | |
47 | #include "amlcode.h" | |
48 | #include "acdispat.h" | |
49 | #include "acinterp.h" | |
50 | #include "acnamesp.h" | |
51 | #include "acevents.h" | |
1da177e4 | 52 | |
73459f73 | 53 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
54 | #include <acpi/acdisasm.h> |
55 | #endif | |
56 | ||
57 | #define _COMPONENT ACPI_DISPATCHER | |
4be44fcd | 58 | ACPI_MODULE_NAME("dswload") |
1da177e4 LT |
59 | |
60 | /******************************************************************************* | |
61 | * | |
62 | * FUNCTION: acpi_ds_init_callbacks | |
63 | * | |
64 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
65 | * pass_number - 1, 2, or 3 | |
66 | * | |
67 | * RETURN: Status | |
68 | * | |
69 | * DESCRIPTION: Init walk state callbacks | |
70 | * | |
71 | ******************************************************************************/ | |
1da177e4 | 72 | acpi_status |
4be44fcd | 73 | acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number) |
1da177e4 LT |
74 | { |
75 | ||
76 | switch (pass_number) { | |
77 | case 1: | |
4be44fcd LB |
78 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
79 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
80 | walk_state->descending_callback = acpi_ds_load1_begin_op; |
81 | walk_state->ascending_callback = acpi_ds_load1_end_op; | |
82 | break; | |
83 | ||
84 | case 2: | |
4be44fcd LB |
85 | walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 | |
86 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
87 | walk_state->descending_callback = acpi_ds_load2_begin_op; |
88 | walk_state->ascending_callback = acpi_ds_load2_end_op; | |
89 | break; | |
90 | ||
91 | case 3: | |
92 | #ifndef ACPI_NO_METHOD_EXECUTION | |
4be44fcd LB |
93 | walk_state->parse_flags |= ACPI_PARSE_EXECUTE | |
94 | ACPI_PARSE_DELETE_TREE; | |
1da177e4 LT |
95 | walk_state->descending_callback = acpi_ds_exec_begin_op; |
96 | walk_state->ascending_callback = acpi_ds_exec_end_op; | |
97 | #endif | |
98 | break; | |
99 | ||
100 | default: | |
101 | return (AE_BAD_PARAMETER); | |
102 | } | |
103 | ||
104 | return (AE_OK); | |
105 | } | |
106 | ||
1da177e4 LT |
107 | /******************************************************************************* |
108 | * | |
109 | * FUNCTION: acpi_ds_load1_begin_op | |
110 | * | |
111 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 112 | * out_op - Where to return op if a new one is created |
1da177e4 LT |
113 | * |
114 | * RETURN: Status | |
115 | * | |
116 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
117 | * | |
118 | ******************************************************************************/ | |
119 | ||
120 | acpi_status | |
4be44fcd LB |
121 | acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state, |
122 | union acpi_parse_object ** out_op) | |
1da177e4 | 123 | { |
4be44fcd LB |
124 | union acpi_parse_object *op; |
125 | struct acpi_namespace_node *node; | |
126 | acpi_status status; | |
127 | acpi_object_type object_type; | |
128 | char *path; | |
129 | u32 flags; | |
1da177e4 | 130 | |
b229cf92 | 131 | ACPI_FUNCTION_TRACE(ds_load1_begin_op); |
1da177e4 LT |
132 | |
133 | op = walk_state->op; | |
4be44fcd LB |
134 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
135 | walk_state)); | |
1da177e4 LT |
136 | |
137 | /* We are only interested in opcodes that have an associated name */ | |
138 | ||
139 | if (op) { | |
140 | if (!(walk_state->op_info->flags & AML_NAMED)) { | |
1da177e4 | 141 | *out_op = op; |
28f55ebc | 142 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
143 | } |
144 | ||
145 | /* Check if this object has already been installed in the namespace */ | |
146 | ||
147 | if (op->common.node) { | |
148 | *out_op = op; | |
28f55ebc | 149 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
150 | } |
151 | } | |
152 | ||
4be44fcd | 153 | path = acpi_ps_get_next_namestring(&walk_state->parser_state); |
1da177e4 LT |
154 | |
155 | /* Map the raw opcode into an internal object type */ | |
156 | ||
157 | object_type = walk_state->op_info->object_type; | |
158 | ||
4be44fcd LB |
159 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
160 | "State=%p Op=%p [%s]\n", walk_state, op, | |
161 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
162 | |
163 | switch (walk_state->opcode) { | |
164 | case AML_SCOPE_OP: | |
165 | ||
166 | /* | |
167 | * The target name of the Scope() operator must exist at this point so | |
168 | * that we can actually open the scope to enter new names underneath it. | |
169 | * Allow search-to-root for single namesegs. | |
170 | */ | |
4be44fcd LB |
171 | status = |
172 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
173 | ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, | |
174 | walk_state, &(node)); | |
73459f73 | 175 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
176 | if (status == AE_NOT_FOUND) { |
177 | /* | |
178 | * Table disassembly: | |
967440e3 | 179 | * Target of Scope() not found. Generate an External for it, and |
1da177e4 LT |
180 | * insert the name into the namespace. |
181 | */ | |
958dd242 | 182 | acpi_dm_add_to_external_list(path, ACPI_TYPE_DEVICE, 0); |
4be44fcd LB |
183 | status = |
184 | acpi_ns_lookup(walk_state->scope_info, path, | |
185 | object_type, ACPI_IMODE_LOAD_PASS1, | |
186 | ACPI_NS_SEARCH_PARENT, walk_state, | |
958dd242 | 187 | &node); |
1da177e4 LT |
188 | } |
189 | #endif | |
4be44fcd | 190 | if (ACPI_FAILURE(status)) { |
b8e4d893 | 191 | ACPI_ERROR_NAMESPACE(path, status); |
28f55ebc | 192 | return_ACPI_STATUS(status); |
1da177e4 LT |
193 | } |
194 | ||
195 | /* | |
196 | * Check to make sure that the target is | |
197 | * one of the opcodes that actually opens a scope | |
198 | */ | |
199 | switch (node->type) { | |
15f0c0d1 | 200 | case ACPI_TYPE_ANY: |
4be44fcd | 201 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
202 | case ACPI_TYPE_DEVICE: |
203 | case ACPI_TYPE_POWER: | |
204 | case ACPI_TYPE_PROCESSOR: | |
205 | case ACPI_TYPE_THERMAL: | |
206 | ||
207 | /* These are acceptable types */ | |
208 | break; | |
209 | ||
210 | case ACPI_TYPE_INTEGER: | |
211 | case ACPI_TYPE_STRING: | |
212 | case ACPI_TYPE_BUFFER: | |
213 | ||
214 | /* | |
967440e3 | 215 | * These types we will allow, but we will change the type. This |
1da177e4 LT |
216 | * enables some existing code of the form: |
217 | * | |
218 | * Name (DEB, 0) | |
219 | * Scope (DEB) { ... } | |
220 | * | |
967440e3 | 221 | * Note: silently change the type here. On the second pass, we will report |
44f6c012 | 222 | * a warning |
1da177e4 | 223 | */ |
4be44fcd LB |
224 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
225 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)\n", | |
226 | path, | |
227 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
228 | |
229 | node->type = ACPI_TYPE_ANY; | |
230 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
231 | break; | |
232 | ||
233 | default: | |
234 | ||
235 | /* All other types are an error */ | |
236 | ||
b8e4d893 BM |
237 | ACPI_ERROR((AE_INFO, |
238 | "Invalid type (%s) for target of Scope operator [%4.4s] (Cannot override)", | |
239 | acpi_ut_get_type_name(node->type), path)); | |
1da177e4 | 240 | |
28f55ebc | 241 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
1da177e4 LT |
242 | } |
243 | break; | |
244 | ||
1da177e4 | 245 | default: |
1da177e4 | 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 | */ | |
262 | if (walk_state->deferred_node) { | |
52fc0b02 | 263 | |
1da177e4 LT |
264 | /* This name is already in the namespace, get the node */ |
265 | ||
266 | node = walk_state->deferred_node; | |
267 | status = AE_OK; | |
268 | break; | |
269 | } | |
270 | ||
28f55ebc BM |
271 | /* |
272 | * If we are executing a method, do not create any namespace objects | |
273 | * during the load phase, only during execution. | |
274 | */ | |
275 | if (walk_state->method_node) { | |
276 | node = NULL; | |
277 | status = AE_OK; | |
278 | break; | |
279 | } | |
280 | ||
1da177e4 LT |
281 | flags = ACPI_NS_NO_UPSEARCH; |
282 | if ((walk_state->opcode != AML_SCOPE_OP) && | |
4be44fcd | 283 | (!(walk_state->parse_flags & ACPI_PARSE_DEFERRED_OP))) { |
1da177e4 | 284 | flags |= ACPI_NS_ERROR_IF_FOUND; |
4be44fcd LB |
285 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
286 | "[%s] Cannot already exist\n", | |
287 | acpi_ut_get_type_name(object_type))); | |
288 | } else { | |
289 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
290 | "[%s] Both Find or Create allowed\n", | |
291 | acpi_ut_get_type_name(object_type))); | |
1da177e4 LT |
292 | } |
293 | ||
294 | /* | |
967440e3 BM |
295 | * Enter the named type into the internal namespace. We enter the name |
296 | * as we go downward in the parse tree. Any necessary subobjects that | |
44f6c012 RM |
297 | * involve arguments to the opcode must be created as we go back up the |
298 | * parse tree later. | |
1da177e4 | 299 | */ |
4be44fcd LB |
300 | status = |
301 | acpi_ns_lookup(walk_state->scope_info, path, object_type, | |
302 | ACPI_IMODE_LOAD_PASS1, flags, walk_state, | |
958dd242 | 303 | &node); |
4be44fcd | 304 | if (ACPI_FAILURE(status)) { |
958dd242 BM |
305 | if (status == AE_ALREADY_EXISTS) { |
306 | ||
307 | /* The name already exists in this scope */ | |
308 | ||
309 | if (node->flags & ANOBJ_IS_EXTERNAL) { | |
310 | /* | |
311 | * Allow one create on an object or segment that was | |
312 | * previously declared External | |
313 | */ | |
314 | node->flags &= ~ANOBJ_IS_EXTERNAL; | |
315 | node->type = (u8) object_type; | |
316 | ||
317 | /* Just retyped a node, probably will need to open a scope */ | |
318 | ||
319 | if (acpi_ns_opens_scope(object_type)) { | |
320 | status = | |
321 | acpi_ds_scope_stack_push | |
322 | (node, object_type, | |
323 | walk_state); | |
324 | if (ACPI_FAILURE(status)) { | |
325 | return_ACPI_STATUS | |
326 | (status); | |
327 | } | |
328 | } | |
967440e3 | 329 | |
958dd242 BM |
330 | status = AE_OK; |
331 | } | |
332 | } | |
333 | ||
334 | if (ACPI_FAILURE(status)) { | |
958dd242 BM |
335 | ACPI_ERROR_NAMESPACE(path, status); |
336 | return_ACPI_STATUS(status); | |
337 | } | |
1da177e4 LT |
338 | } |
339 | break; | |
340 | } | |
341 | ||
1da177e4 LT |
342 | /* Common exit */ |
343 | ||
344 | if (!op) { | |
52fc0b02 | 345 | |
1da177e4 LT |
346 | /* Create a new op */ |
347 | ||
4be44fcd | 348 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 349 | if (!op) { |
28f55ebc | 350 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
351 | } |
352 | } | |
353 | ||
28f55ebc | 354 | /* Initialize the op */ |
1da177e4 LT |
355 | |
356 | #if (defined (ACPI_NO_METHOD_EXECUTION) || defined (ACPI_CONSTANT_EVAL_ONLY)) | |
c51a4de8 | 357 | op->named.path = ACPI_CAST_PTR(u8, path); |
1da177e4 LT |
358 | #endif |
359 | ||
28f55ebc BM |
360 | if (node) { |
361 | /* | |
362 | * Put the Node in the "op" object that the parser uses, so we | |
363 | * can get it again quickly when this scope is closed | |
364 | */ | |
365 | op->common.node = node; | |
366 | op->named.name = node->name.integer; | |
367 | } | |
368 | ||
4be44fcd LB |
369 | acpi_ps_append_arg(acpi_ps_get_parent_scope(&walk_state->parser_state), |
370 | op); | |
1da177e4 | 371 | *out_op = op; |
28f55ebc | 372 | return_ACPI_STATUS(status); |
1da177e4 LT |
373 | } |
374 | ||
1da177e4 LT |
375 | /******************************************************************************* |
376 | * | |
377 | * FUNCTION: acpi_ds_load1_end_op | |
378 | * | |
379 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
380 | * |
381 | * RETURN: Status | |
382 | * | |
383 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
384 | * both control methods and everything else. | |
385 | * | |
386 | ******************************************************************************/ | |
387 | ||
28f55ebc | 388 | acpi_status acpi_ds_load1_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 389 | { |
4be44fcd LB |
390 | union acpi_parse_object *op; |
391 | acpi_object_type object_type; | |
392 | acpi_status status = AE_OK; | |
1da177e4 | 393 | |
b229cf92 | 394 | ACPI_FUNCTION_TRACE(ds_load1_end_op); |
1da177e4 LT |
395 | |
396 | op = walk_state->op; | |
4be44fcd LB |
397 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
398 | walk_state)); | |
1da177e4 LT |
399 | |
400 | /* We are only interested in opcodes that have an associated name */ | |
401 | ||
402 | if (!(walk_state->op_info->flags & (AML_NAMED | AML_FIELD))) { | |
28f55ebc | 403 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
404 | } |
405 | ||
406 | /* Get the object type to determine if we should pop the scope */ | |
407 | ||
408 | object_type = walk_state->op_info->object_type; | |
409 | ||
410 | #ifndef ACPI_NO_METHOD_EXECUTION | |
411 | if (walk_state->op_info->flags & AML_FIELD) { | |
28f55ebc BM |
412 | /* |
413 | * If we are executing a method, do not create any namespace objects | |
414 | * during the load phase, only during execution. | |
415 | */ | |
416 | if (!walk_state->method_node) { | |
417 | if (walk_state->opcode == AML_FIELD_OP || | |
418 | walk_state->opcode == AML_BANK_FIELD_OP || | |
419 | walk_state->opcode == AML_INDEX_FIELD_OP) { | |
420 | status = | |
421 | acpi_ds_init_field_objects(op, walk_state); | |
422 | } | |
1da177e4 | 423 | } |
28f55ebc | 424 | return_ACPI_STATUS(status); |
1da177e4 LT |
425 | } |
426 | ||
28f55ebc BM |
427 | /* |
428 | * If we are executing a method, do not create any namespace objects | |
429 | * during the load phase, only during execution. | |
430 | */ | |
431 | if (!walk_state->method_node) { | |
432 | if (op->common.aml_opcode == AML_REGION_OP) { | |
433 | status = | |
434 | acpi_ex_create_region(op->named.data, | |
435 | op->named.length, | |
967440e3 BM |
436 | (acpi_adr_space_type) ((op-> |
437 | common. | |
438 | value. | |
439 | arg)-> | |
440 | common. | |
441 | value. | |
442 | integer), | |
28f55ebc BM |
443 | walk_state); |
444 | if (ACPI_FAILURE(status)) { | |
445 | return_ACPI_STATUS(status); | |
446 | } | |
941f48bb LM |
447 | } else if (op->common.aml_opcode == AML_DATA_REGION_OP) { |
448 | status = | |
449 | acpi_ex_create_region(op->named.data, | |
450 | op->named.length, | |
451 | REGION_DATA_TABLE, | |
452 | walk_state); | |
453 | if (ACPI_FAILURE(status)) { | |
454 | return_ACPI_STATUS(status); | |
455 | } | |
1da177e4 LT |
456 | } |
457 | } | |
458 | #endif | |
459 | ||
460 | if (op->common.aml_opcode == AML_NAME_OP) { | |
52fc0b02 | 461 | |
1da177e4 LT |
462 | /* For Name opcode, get the object type from the argument */ |
463 | ||
464 | if (op->common.value.arg) { | |
4be44fcd LB |
465 | object_type = (acpi_ps_get_opcode_info((op->common. |
466 | value.arg)-> | |
467 | common. | |
468 | aml_opcode))-> | |
469 | object_type; | |
28f55ebc BM |
470 | |
471 | /* Set node type if we have a namespace node */ | |
472 | ||
473 | if (op->common.node) { | |
474 | op->common.node->type = (u8) object_type; | |
475 | } | |
1da177e4 LT |
476 | } |
477 | } | |
478 | ||
defba1d8 BM |
479 | /* |
480 | * If we are executing a method, do not create any namespace objects | |
481 | * during the load phase, only during execution. | |
482 | */ | |
483 | if (!walk_state->method_node) { | |
484 | if (op->common.aml_opcode == AML_METHOD_OP) { | |
485 | /* | |
486 | * method_op pkg_length name_string method_flags term_list | |
487 | * | |
488 | * Note: We must create the method node/object pair as soon as we | |
967440e3 | 489 | * see the method declaration. This allows later pass1 parsing |
defba1d8 BM |
490 | * of invocations of the method (need to know the number of |
491 | * arguments.) | |
492 | */ | |
493 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
b229cf92 | 494 | "LOADING-Method: State=%p Op=%p NamedObj=%p\n", |
defba1d8 | 495 | walk_state, op, op->named.node)); |
1da177e4 | 496 | |
defba1d8 BM |
497 | if (!acpi_ns_get_attached_object(op->named.node)) { |
498 | walk_state->operands[0] = | |
499 | ACPI_CAST_PTR(void, op->named.node); | |
500 | walk_state->num_operands = 1; | |
1da177e4 | 501 | |
defba1d8 BM |
502 | status = |
503 | acpi_ds_create_operands(walk_state, | |
504 | op->common.value. | |
505 | arg); | |
506 | if (ACPI_SUCCESS(status)) { | |
507 | status = | |
508 | acpi_ex_create_method(op->named. | |
509 | data, | |
510 | op->named. | |
511 | length, | |
512 | walk_state); | |
513 | } | |
967440e3 | 514 | |
defba1d8 BM |
515 | walk_state->operands[0] = NULL; |
516 | walk_state->num_operands = 0; | |
1da177e4 | 517 | |
defba1d8 BM |
518 | if (ACPI_FAILURE(status)) { |
519 | return_ACPI_STATUS(status); | |
520 | } | |
1da177e4 LT |
521 | } |
522 | } | |
523 | } | |
524 | ||
defba1d8 | 525 | /* Pop the scope stack (only if loading a table) */ |
1da177e4 | 526 | |
defba1d8 | 527 | if (!walk_state->method_node && acpi_ns_opens_scope(object_type)) { |
4be44fcd LB |
528 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
529 | "(%s): Popping scope for Op %p\n", | |
530 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 531 | |
4be44fcd | 532 | status = acpi_ds_scope_stack_pop(walk_state); |
1da177e4 LT |
533 | } |
534 | ||
28f55ebc | 535 | return_ACPI_STATUS(status); |
1da177e4 LT |
536 | } |
537 | ||
1da177e4 LT |
538 | /******************************************************************************* |
539 | * | |
540 | * FUNCTION: acpi_ds_load2_begin_op | |
541 | * | |
542 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
44f6c012 | 543 | * out_op - Wher to return op if a new one is created |
1da177e4 LT |
544 | * |
545 | * RETURN: Status | |
546 | * | |
547 | * DESCRIPTION: Descending callback used during the loading of ACPI tables. | |
548 | * | |
549 | ******************************************************************************/ | |
550 | ||
551 | acpi_status | |
28f55ebc BM |
552 | acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, |
553 | union acpi_parse_object **out_op) | |
1da177e4 | 554 | { |
4be44fcd LB |
555 | union acpi_parse_object *op; |
556 | struct acpi_namespace_node *node; | |
557 | acpi_status status; | |
558 | acpi_object_type object_type; | |
559 | char *buffer_ptr; | |
13b572a3 | 560 | u32 flags; |
1da177e4 | 561 | |
b229cf92 | 562 | ACPI_FUNCTION_TRACE(ds_load2_begin_op); |
1da177e4 LT |
563 | |
564 | op = walk_state->op; | |
4be44fcd LB |
565 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op, |
566 | walk_state)); | |
1da177e4 LT |
567 | |
568 | if (op) { | |
88ac00f5 | 569 | if ((walk_state->control_state) && |
4be44fcd LB |
570 | (walk_state->control_state->common.state == |
571 | ACPI_CONTROL_CONDITIONAL_EXECUTING)) { | |
52fc0b02 | 572 | |
88ac00f5 RM |
573 | /* We are executing a while loop outside of a method */ |
574 | ||
4be44fcd LB |
575 | status = acpi_ds_exec_begin_op(walk_state, out_op); |
576 | return_ACPI_STATUS(status); | |
88ac00f5 RM |
577 | } |
578 | ||
1da177e4 LT |
579 | /* We only care about Namespace opcodes here */ |
580 | ||
44f6c012 | 581 | if ((!(walk_state->op_info->flags & AML_NSOPCODE) && |
4be44fcd LB |
582 | (walk_state->opcode != AML_INT_NAMEPATH_OP)) || |
583 | (!(walk_state->op_info->flags & AML_NAMED))) { | |
aff8c277 | 584 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
44f6c012 | 585 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || |
4be44fcd LB |
586 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
587 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
588 | "Begin/EXEC: %s (fl %8.8X)\n", | |
589 | walk_state->op_info->name, | |
590 | walk_state->op_info->flags)); | |
88ac00f5 RM |
591 | |
592 | /* Executing a type1 or type2 opcode outside of a method */ | |
593 | ||
4be44fcd LB |
594 | status = |
595 | acpi_ds_exec_begin_op(walk_state, out_op); | |
596 | return_ACPI_STATUS(status); | |
44f6c012 | 597 | } |
aff8c277 | 598 | #endif |
4be44fcd | 599 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
600 | } |
601 | ||
44f6c012 RM |
602 | /* Get the name we are going to enter or lookup in the namespace */ |
603 | ||
1da177e4 | 604 | if (walk_state->opcode == AML_INT_NAMEPATH_OP) { |
52fc0b02 | 605 | |
1da177e4 LT |
606 | /* For Namepath op, get the path string */ |
607 | ||
608 | buffer_ptr = op->common.value.string; | |
609 | if (!buffer_ptr) { | |
52fc0b02 | 610 | |
1da177e4 LT |
611 | /* No name, just exit */ |
612 | ||
4be44fcd | 613 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 614 | } |
4be44fcd | 615 | } else { |
1da177e4 LT |
616 | /* Get name from the op */ |
617 | ||
967440e3 | 618 | buffer_ptr = ACPI_CAST_PTR(char, &op->named.name); |
1da177e4 | 619 | } |
4be44fcd | 620 | } else { |
1da177e4 LT |
621 | /* Get the namestring from the raw AML */ |
622 | ||
4be44fcd LB |
623 | buffer_ptr = |
624 | acpi_ps_get_next_namestring(&walk_state->parser_state); | |
1da177e4 LT |
625 | } |
626 | ||
627 | /* Map the opcode into an internal object type */ | |
628 | ||
629 | object_type = walk_state->op_info->object_type; | |
630 | ||
4be44fcd LB |
631 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
632 | "State=%p Op=%p Type=%X\n", walk_state, op, | |
633 | object_type)); | |
1da177e4 LT |
634 | |
635 | switch (walk_state->opcode) { | |
636 | case AML_FIELD_OP: | |
637 | case AML_BANK_FIELD_OP: | |
638 | case AML_INDEX_FIELD_OP: | |
639 | ||
640 | node = NULL; | |
641 | status = AE_OK; | |
642 | break; | |
643 | ||
644 | case AML_INT_NAMEPATH_OP: | |
1da177e4 | 645 | /* |
44f6c012 RM |
646 | * The name_path is an object reference to an existing object. |
647 | * Don't enter the name into the namespace, but look it up | |
648 | * for use later. | |
1da177e4 | 649 | */ |
4be44fcd LB |
650 | status = |
651 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
652 | object_type, ACPI_IMODE_EXECUTE, | |
653 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
1da177e4 LT |
654 | break; |
655 | ||
656 | case AML_SCOPE_OP: | |
1da177e4 | 657 | /* |
44f6c012 RM |
658 | * The Path is an object reference to an existing object. |
659 | * Don't enter the name into the namespace, but look it up | |
660 | * for use later. | |
1da177e4 | 661 | */ |
4be44fcd LB |
662 | status = |
663 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
664 | object_type, ACPI_IMODE_EXECUTE, | |
665 | ACPI_NS_SEARCH_PARENT, walk_state, &(node)); | |
666 | if (ACPI_FAILURE(status)) { | |
73459f73 | 667 | #ifdef ACPI_ASL_COMPILER |
1da177e4 LT |
668 | if (status == AE_NOT_FOUND) { |
669 | status = AE_OK; | |
4be44fcd | 670 | } else { |
b8e4d893 | 671 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 LT |
672 | } |
673 | #else | |
b8e4d893 | 674 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
1da177e4 | 675 | #endif |
4be44fcd | 676 | return_ACPI_STATUS(status); |
1da177e4 | 677 | } |
967440e3 | 678 | |
1da177e4 LT |
679 | /* |
680 | * We must check to make sure that the target is | |
681 | * one of the opcodes that actually opens a scope | |
682 | */ | |
683 | switch (node->type) { | |
15f0c0d1 | 684 | case ACPI_TYPE_ANY: |
4be44fcd | 685 | case ACPI_TYPE_LOCAL_SCOPE: /* Scope */ |
1da177e4 LT |
686 | case ACPI_TYPE_DEVICE: |
687 | case ACPI_TYPE_POWER: | |
688 | case ACPI_TYPE_PROCESSOR: | |
689 | case ACPI_TYPE_THERMAL: | |
690 | ||
691 | /* These are acceptable types */ | |
692 | break; | |
693 | ||
694 | case ACPI_TYPE_INTEGER: | |
695 | case ACPI_TYPE_STRING: | |
696 | case ACPI_TYPE_BUFFER: | |
697 | ||
698 | /* | |
967440e3 | 699 | * These types we will allow, but we will change the type. This |
1da177e4 LT |
700 | * enables some existing code of the form: |
701 | * | |
702 | * Name (DEB, 0) | |
703 | * Scope (DEB) { ... } | |
704 | */ | |
b8e4d893 BM |
705 | ACPI_WARNING((AE_INFO, |
706 | "Type override - [%4.4s] had invalid type (%s) for Scope operator, changed to (Scope)", | |
707 | buffer_ptr, | |
708 | acpi_ut_get_type_name(node->type))); | |
1da177e4 LT |
709 | |
710 | node->type = ACPI_TYPE_ANY; | |
711 | walk_state->scope_info->common.value = ACPI_TYPE_ANY; | |
712 | break; | |
713 | ||
714 | default: | |
715 | ||
716 | /* All other types are an error */ | |
717 | ||
b8e4d893 BM |
718 | ACPI_ERROR((AE_INFO, |
719 | "Invalid type (%s) for target of Scope operator [%4.4s]", | |
720 | acpi_ut_get_type_name(node->type), | |
721 | buffer_ptr)); | |
1da177e4 LT |
722 | |
723 | return (AE_AML_OPERAND_TYPE); | |
724 | } | |
725 | break; | |
726 | ||
727 | default: | |
728 | ||
729 | /* All other opcodes */ | |
730 | ||
731 | if (op && op->common.node) { | |
52fc0b02 | 732 | |
1da177e4 LT |
733 | /* This op/node was previously entered into the namespace */ |
734 | ||
735 | node = op->common.node; | |
736 | ||
4be44fcd LB |
737 | if (acpi_ns_opens_scope(object_type)) { |
738 | status = | |
739 | acpi_ds_scope_stack_push(node, object_type, | |
740 | walk_state); | |
741 | if (ACPI_FAILURE(status)) { | |
742 | return_ACPI_STATUS(status); | |
1da177e4 | 743 | } |
1da177e4 | 744 | } |
967440e3 | 745 | |
4be44fcd | 746 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
747 | } |
748 | ||
749 | /* | |
967440e3 BM |
750 | * Enter the named type into the internal namespace. We enter the name |
751 | * as we go downward in the parse tree. Any necessary subobjects that | |
44f6c012 RM |
752 | * involve arguments to the opcode must be created as we go back up the |
753 | * parse tree later. | |
1da177e4 LT |
754 | * |
755 | * Note: Name may already exist if we are executing a deferred opcode. | |
756 | */ | |
757 | if (walk_state->deferred_node) { | |
52fc0b02 | 758 | |
1da177e4 LT |
759 | /* This name is already in the namespace, get the node */ |
760 | ||
761 | node = walk_state->deferred_node; | |
762 | status = AE_OK; | |
763 | break; | |
764 | } | |
765 | ||
13b572a3 | 766 | flags = ACPI_NS_NO_UPSEARCH; |
ec3153fb | 767 | if (walk_state->pass_number == ACPI_IMODE_EXECUTE) { |
13b572a3 | 768 | |
d1fdda83 | 769 | /* Execution mode, node cannot already exist, node is temporary */ |
13b572a3 | 770 | |
d1fdda83 | 771 | flags |= (ACPI_NS_ERROR_IF_FOUND | ACPI_NS_TEMPORARY); |
13b572a3 BM |
772 | } |
773 | ||
774 | /* Add new entry or lookup existing entry */ | |
88ac00f5 | 775 | |
4be44fcd LB |
776 | status = |
777 | acpi_ns_lookup(walk_state->scope_info, buffer_ptr, | |
13b572a3 BM |
778 | object_type, ACPI_IMODE_LOAD_PASS2, flags, |
779 | walk_state, &node); | |
cca97b81 BM |
780 | |
781 | if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) { | |
782 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
783 | "***New Node [%4.4s] %p is temporary\n", | |
784 | acpi_ut_get_node_name(node), node)); | |
785 | } | |
1da177e4 LT |
786 | break; |
787 | } | |
788 | ||
4be44fcd | 789 | if (ACPI_FAILURE(status)) { |
b8e4d893 | 790 | ACPI_ERROR_NAMESPACE(buffer_ptr, status); |
4be44fcd | 791 | return_ACPI_STATUS(status); |
1da177e4 LT |
792 | } |
793 | ||
1da177e4 | 794 | if (!op) { |
52fc0b02 | 795 | |
1da177e4 LT |
796 | /* Create a new op */ |
797 | ||
4be44fcd | 798 | op = acpi_ps_alloc_op(walk_state->opcode); |
1da177e4 | 799 | if (!op) { |
4be44fcd | 800 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
801 | } |
802 | ||
803 | /* Initialize the new op */ | |
804 | ||
805 | if (node) { | |
806 | op->named.name = node->name.integer; | |
807 | } | |
88ac00f5 | 808 | *out_op = op; |
1da177e4 LT |
809 | } |
810 | ||
811 | /* | |
812 | * Put the Node in the "op" object that the parser uses, so we | |
813 | * can get it again quickly when this scope is closed | |
814 | */ | |
815 | op->common.node = node; | |
4be44fcd | 816 | return_ACPI_STATUS(status); |
1da177e4 LT |
817 | } |
818 | ||
1da177e4 LT |
819 | /******************************************************************************* |
820 | * | |
821 | * FUNCTION: acpi_ds_load2_end_op | |
822 | * | |
823 | * PARAMETERS: walk_state - Current state of the parse tree walk | |
1da177e4 LT |
824 | * |
825 | * RETURN: Status | |
826 | * | |
827 | * DESCRIPTION: Ascending callback used during the loading of the namespace, | |
828 | * both control methods and everything else. | |
829 | * | |
830 | ******************************************************************************/ | |
831 | ||
4be44fcd | 832 | acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) |
1da177e4 | 833 | { |
4be44fcd LB |
834 | union acpi_parse_object *op; |
835 | acpi_status status = AE_OK; | |
836 | acpi_object_type object_type; | |
837 | struct acpi_namespace_node *node; | |
838 | union acpi_parse_object *arg; | |
839 | struct acpi_namespace_node *new_node; | |
1da177e4 | 840 | #ifndef ACPI_NO_METHOD_EXECUTION |
4be44fcd | 841 | u32 i; |
941f48bb | 842 | u8 region_space; |
1da177e4 LT |
843 | #endif |
844 | ||
b229cf92 | 845 | ACPI_FUNCTION_TRACE(ds_load2_end_op); |
1da177e4 LT |
846 | |
847 | op = walk_state->op; | |
4be44fcd LB |
848 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n", |
849 | walk_state->op_info->name, op, walk_state)); | |
1da177e4 | 850 | |
88ac00f5 | 851 | /* Check if opcode had an associated namespace object */ |
1da177e4 LT |
852 | |
853 | if (!(walk_state->op_info->flags & AML_NSOBJECT)) { | |
88ac00f5 | 854 | #ifndef ACPI_NO_METHOD_EXECUTION |
aff8c277 | 855 | #ifdef ACPI_ENABLE_MODULE_LEVEL_CODE |
88ac00f5 RM |
856 | /* No namespace object. Executable opcode? */ |
857 | ||
858 | if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || | |
4be44fcd LB |
859 | (walk_state->op_info->class == AML_CLASS_CONTROL)) { |
860 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
861 | "End/EXEC: %s (fl %8.8X)\n", | |
862 | walk_state->op_info->name, | |
863 | walk_state->op_info->flags)); | |
88ac00f5 RM |
864 | |
865 | /* Executing a type1 or type2 opcode outside of a method */ | |
866 | ||
4be44fcd LB |
867 | status = acpi_ds_exec_end_op(walk_state); |
868 | return_ACPI_STATUS(status); | |
88ac00f5 | 869 | } |
aff8c277 | 870 | #endif |
88ac00f5 | 871 | #endif |
4be44fcd | 872 | return_ACPI_STATUS(AE_OK); |
1da177e4 LT |
873 | } |
874 | ||
875 | if (op->common.aml_opcode == AML_SCOPE_OP) { | |
4be44fcd LB |
876 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
877 | "Ending scope Op=%p State=%p\n", op, | |
878 | walk_state)); | |
1da177e4 LT |
879 | } |
880 | ||
1da177e4 LT |
881 | object_type = walk_state->op_info->object_type; |
882 | ||
883 | /* | |
884 | * Get the Node/name from the earlier lookup | |
885 | * (It was saved in the *op structure) | |
886 | */ | |
887 | node = op->common.node; | |
888 | ||
889 | /* | |
890 | * Put the Node on the object stack (Contains the ACPI Name of | |
891 | * this object) | |
892 | */ | |
4be44fcd | 893 | walk_state->operands[0] = (void *)node; |
1da177e4 LT |
894 | walk_state->num_operands = 1; |
895 | ||
896 | /* Pop the scope stack */ | |
897 | ||
4be44fcd LB |
898 | if (acpi_ns_opens_scope(object_type) && |
899 | (op->common.aml_opcode != AML_INT_METHODCALL_OP)) { | |
900 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
901 | "(%s) Popping scope for Op %p\n", | |
902 | acpi_ut_get_type_name(object_type), op)); | |
1da177e4 | 903 | |
4be44fcd LB |
904 | status = acpi_ds_scope_stack_pop(walk_state); |
905 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
906 | goto cleanup; |
907 | } | |
908 | } | |
909 | ||
910 | /* | |
911 | * Named operations are as follows: | |
912 | * | |
913 | * AML_ALIAS | |
914 | * AML_BANKFIELD | |
915 | * AML_CREATEBITFIELD | |
916 | * AML_CREATEBYTEFIELD | |
917 | * AML_CREATEDWORDFIELD | |
918 | * AML_CREATEFIELD | |
919 | * AML_CREATEQWORDFIELD | |
920 | * AML_CREATEWORDFIELD | |
921 | * AML_DATA_REGION | |
922 | * AML_DEVICE | |
923 | * AML_EVENT | |
924 | * AML_FIELD | |
925 | * AML_INDEXFIELD | |
926 | * AML_METHOD | |
927 | * AML_METHODCALL | |
928 | * AML_MUTEX | |
929 | * AML_NAME | |
930 | * AML_NAMEDFIELD | |
931 | * AML_OPREGION | |
932 | * AML_POWERRES | |
933 | * AML_PROCESSOR | |
934 | * AML_SCOPE | |
935 | * AML_THERMALZONE | |
936 | */ | |
937 | ||
4be44fcd | 938 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
b229cf92 | 939 | "Create-Load [%s] State=%p Op=%p NamedObj=%p\n", |
4be44fcd LB |
940 | acpi_ps_get_opcode_name(op->common.aml_opcode), |
941 | walk_state, op, node)); | |
1da177e4 LT |
942 | |
943 | /* Decode the opcode */ | |
944 | ||
945 | arg = op->common.value.arg; | |
946 | ||
947 | switch (walk_state->op_info->type) { | |
948 | #ifndef ACPI_NO_METHOD_EXECUTION | |
949 | ||
950 | case AML_TYPE_CREATE_FIELD: | |
1da177e4 LT |
951 | /* |
952 | * Create the field object, but the field buffer and index must | |
953 | * be evaluated later during the execution phase | |
954 | */ | |
4be44fcd | 955 | status = acpi_ds_create_buffer_field(op, walk_state); |
1da177e4 LT |
956 | break; |
957 | ||
4be44fcd | 958 | case AML_TYPE_NAMED_FIELD: |
28f55ebc BM |
959 | /* |
960 | * If we are executing a method, initialize the field | |
961 | */ | |
962 | if (walk_state->method_node) { | |
963 | status = acpi_ds_init_field_objects(op, walk_state); | |
964 | } | |
965 | ||
1da177e4 LT |
966 | switch (op->common.aml_opcode) { |
967 | case AML_INDEX_FIELD_OP: | |
968 | ||
4be44fcd LB |
969 | status = |
970 | acpi_ds_create_index_field(op, | |
971 | (acpi_handle) arg-> | |
972 | common.node, walk_state); | |
1da177e4 LT |
973 | break; |
974 | ||
975 | case AML_BANK_FIELD_OP: | |
976 | ||
4be44fcd LB |
977 | status = |
978 | acpi_ds_create_bank_field(op, arg->common.node, | |
979 | walk_state); | |
1da177e4 LT |
980 | break; |
981 | ||
982 | case AML_FIELD_OP: | |
983 | ||
4be44fcd LB |
984 | status = |
985 | acpi_ds_create_field(op, arg->common.node, | |
986 | walk_state); | |
1da177e4 LT |
987 | break; |
988 | ||
989 | default: | |
990 | /* All NAMED_FIELD opcodes must be handled above */ | |
991 | break; | |
992 | } | |
993 | break; | |
994 | ||
4be44fcd | 995 | case AML_TYPE_NAMED_SIMPLE: |
1da177e4 | 996 | |
4be44fcd LB |
997 | status = acpi_ds_create_operands(walk_state, arg); |
998 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
999 | goto cleanup; |
1000 | } | |
1001 | ||
1002 | switch (op->common.aml_opcode) { | |
1003 | case AML_PROCESSOR_OP: | |
1004 | ||
4be44fcd | 1005 | status = acpi_ex_create_processor(walk_state); |
1da177e4 LT |
1006 | break; |
1007 | ||
1008 | case AML_POWER_RES_OP: | |
1009 | ||
4be44fcd | 1010 | status = acpi_ex_create_power_resource(walk_state); |
1da177e4 LT |
1011 | break; |
1012 | ||
1013 | case AML_MUTEX_OP: | |
1014 | ||
4be44fcd | 1015 | status = acpi_ex_create_mutex(walk_state); |
1da177e4 LT |
1016 | break; |
1017 | ||
1018 | case AML_EVENT_OP: | |
1019 | ||
4be44fcd | 1020 | status = acpi_ex_create_event(walk_state); |
1da177e4 LT |
1021 | break; |
1022 | ||
1da177e4 LT |
1023 | case AML_ALIAS_OP: |
1024 | ||
4be44fcd | 1025 | status = acpi_ex_create_alias(walk_state); |
1da177e4 LT |
1026 | break; |
1027 | ||
1028 | default: | |
1029 | /* Unknown opcode */ | |
1030 | ||
1031 | status = AE_OK; | |
1032 | goto cleanup; | |
1033 | } | |
1034 | ||
1035 | /* Delete operands */ | |
1036 | ||
1037 | for (i = 1; i < walk_state->num_operands; i++) { | |
4be44fcd | 1038 | acpi_ut_remove_reference(walk_state->operands[i]); |
1da177e4 LT |
1039 | walk_state->operands[i] = NULL; |
1040 | } | |
1041 | ||
1042 | break; | |
4be44fcd | 1043 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1044 | |
1045 | case AML_TYPE_NAMED_COMPLEX: | |
1046 | ||
1047 | switch (op->common.aml_opcode) { | |
1048 | #ifndef ACPI_NO_METHOD_EXECUTION | |
1049 | case AML_REGION_OP: | |
941f48bb LM |
1050 | case AML_DATA_REGION_OP: |
1051 | ||
1052 | if (op->common.aml_opcode == AML_REGION_OP) { | |
1053 | region_space = (acpi_adr_space_type) | |
1054 | ((op->common.value.arg)->common.value. | |
1055 | integer); | |
1056 | } else { | |
1057 | region_space = REGION_DATA_TABLE; | |
1058 | } | |
28f55ebc BM |
1059 | |
1060 | /* | |
1061 | * If we are executing a method, initialize the region | |
1062 | */ | |
1063 | if (walk_state->method_node) { | |
1064 | status = | |
1065 | acpi_ex_create_region(op->named.data, | |
1066 | op->named.length, | |
941f48bb | 1067 | region_space, |
28f55ebc BM |
1068 | walk_state); |
1069 | if (ACPI_FAILURE(status)) { | |
1070 | return (status); | |
1071 | } | |
1072 | } | |
1073 | ||
1da177e4 | 1074 | /* |
44f6c012 RM |
1075 | * The op_region is not fully parsed at this time. Only valid |
1076 | * argument is the space_id. (We must save the address of the | |
1077 | * AML of the address and length operands) | |
1da177e4 | 1078 | */ |
967440e3 | 1079 | |
1da177e4 LT |
1080 | /* |
1081 | * If we have a valid region, initialize it | |
1082 | * Namespace is NOT locked at this point. | |
1083 | */ | |
4be44fcd LB |
1084 | status = |
1085 | acpi_ev_initialize_region | |
1086 | (acpi_ns_get_attached_object(node), FALSE); | |
1087 | if (ACPI_FAILURE(status)) { | |
1da177e4 LT |
1088 | /* |
1089 | * If AE_NOT_EXIST is returned, it is not fatal | |
1090 | * because many regions get created before a handler | |
1091 | * is installed for said region. | |
1092 | */ | |
1093 | if (AE_NOT_EXIST == status) { | |
1094 | status = AE_OK; | |
1095 | } | |
1096 | } | |
1097 | break; | |
1098 | ||
1da177e4 LT |
1099 | case AML_NAME_OP: |
1100 | ||
4be44fcd | 1101 | status = acpi_ds_create_node(walk_state, node, op); |
1da177e4 | 1102 | break; |
defba1d8 BM |
1103 | |
1104 | case AML_METHOD_OP: | |
1105 | /* | |
1106 | * method_op pkg_length name_string method_flags term_list | |
1107 | * | |
1108 | * Note: We must create the method node/object pair as soon as we | |
967440e3 | 1109 | * see the method declaration. This allows later pass1 parsing |
defba1d8 BM |
1110 | * of invocations of the method (need to know the number of |
1111 | * arguments.) | |
1112 | */ | |
1113 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, | |
b229cf92 | 1114 | "LOADING-Method: State=%p Op=%p NamedObj=%p\n", |
defba1d8 BM |
1115 | walk_state, op, op->named.node)); |
1116 | ||
1117 | if (!acpi_ns_get_attached_object(op->named.node)) { | |
1118 | walk_state->operands[0] = | |
1119 | ACPI_CAST_PTR(void, op->named.node); | |
1120 | walk_state->num_operands = 1; | |
1121 | ||
1122 | status = | |
1123 | acpi_ds_create_operands(walk_state, | |
1124 | op->common.value. | |
1125 | arg); | |
1126 | if (ACPI_SUCCESS(status)) { | |
1127 | status = | |
1128 | acpi_ex_create_method(op->named. | |
1129 | data, | |
1130 | op->named. | |
1131 | length, | |
1132 | walk_state); | |
1133 | } | |
1134 | walk_state->operands[0] = NULL; | |
1135 | walk_state->num_operands = 0; | |
1136 | ||
1137 | if (ACPI_FAILURE(status)) { | |
1138 | return_ACPI_STATUS(status); | |
1139 | } | |
1140 | } | |
1141 | break; | |
1142 | ||
4be44fcd | 1143 | #endif /* ACPI_NO_METHOD_EXECUTION */ |
1da177e4 LT |
1144 | |
1145 | default: | |
1146 | /* All NAMED_COMPLEX opcodes must be handled above */ | |
1da177e4 LT |
1147 | break; |
1148 | } | |
1149 | break; | |
1150 | ||
1da177e4 LT |
1151 | case AML_CLASS_INTERNAL: |
1152 | ||
1153 | /* case AML_INT_NAMEPATH_OP: */ | |
1154 | break; | |
1155 | ||
1da177e4 LT |
1156 | case AML_CLASS_METHOD_CALL: |
1157 | ||
4be44fcd | 1158 | ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, |
b229cf92 | 1159 | "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n", |
4be44fcd | 1160 | walk_state, op, node)); |
1da177e4 LT |
1161 | |
1162 | /* | |
1163 | * Lookup the method name and save the Node | |
1164 | */ | |
4be44fcd LB |
1165 | status = |
1166 | acpi_ns_lookup(walk_state->scope_info, | |
1167 | arg->common.value.string, ACPI_TYPE_ANY, | |
1168 | ACPI_IMODE_LOAD_PASS2, | |
1169 | ACPI_NS_SEARCH_PARENT | | |
1170 | ACPI_NS_DONT_OPEN_SCOPE, walk_state, | |
1171 | &(new_node)); | |
1172 | if (ACPI_SUCCESS(status)) { | |
1da177e4 LT |
1173 | /* |
1174 | * Make sure that what we found is indeed a method | |
44f6c012 RM |
1175 | * We didn't search for a method on purpose, to see if the name |
1176 | * would resolve | |
1da177e4 LT |
1177 | */ |
1178 | if (new_node->type != ACPI_TYPE_METHOD) { | |
1179 | status = AE_AML_OPERAND_TYPE; | |
1180 | } | |
1181 | ||
44f6c012 RM |
1182 | /* We could put the returned object (Node) on the object stack for |
1183 | * later, but for now, we will put it in the "op" object that the | |
1184 | * parser uses, so we can get it again at the end of this scope | |
1da177e4 LT |
1185 | */ |
1186 | op->common.node = new_node; | |
4be44fcd | 1187 | } else { |
b8e4d893 | 1188 | ACPI_ERROR_NAMESPACE(arg->common.value.string, status); |
1da177e4 LT |
1189 | } |
1190 | break; | |
1191 | ||
1da177e4 LT |
1192 | default: |
1193 | break; | |
1194 | } | |
1195 | ||
4be44fcd | 1196 | cleanup: |
1da177e4 LT |
1197 | |
1198 | /* Remove the Node pushed at the very beginning */ | |
1199 | ||
1200 | walk_state->operands[0] = NULL; | |
1201 | walk_state->num_operands = 0; | |
4be44fcd | 1202 | return_ACPI_STATUS(status); |
1da177e4 | 1203 | } |